Abstract

A motor, a fan assembly, and a heating, ventilation and air conditioning device. The motor comprises a rotor assembly (11), a stator assembly (12), at least one bearing (13), and at least one elastic body (14). The bearing (13) is connected to the rotor assembly (11) and a relative position therebetween is fixed. The elastic body is disposed between the bearing (13) and the stator assembly (12), serving to maintain the bearing (13) at the stator assembly (12) with a certain axial preloading force while reserving a certain compressible height.

IPC Classes  ?

• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
• H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
• H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• H02K 1/12 - Stationary parts of the magnetic circuit
• H02K 1/22 - Rotating parts of the magnetic circuit

Abstract

The present application discloses a rotor assembly, a motor, and a household appliance, wherein the rotor assembly comprises a rotating shaft (100), a plastic package body (200), and iron core (300). The plastic package body (200) is connected to the rotating shaft (100), and the iron core (300) is connected to the plastic package body (200); the plastic package body (200) is packaged between the rotating shaft (100) and the iron core (300), the iron core (300) is arranged around the rotating shaft (100), thickness reduction holes (201) are formed on at least one of the two end faces of the plastic package body (200) in the axial direction of the rotating shaft (100), and the thickness reduction holes (201) are located between the rotating shaft (100) and the iron core (300).

IPC Classes  ?

• H02K 1/274 - Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets

Abstract

Disclosed in the present application are a motor wire outlet assembly, a motor and a household appliance. The motor wire outlet assembly comprises a wire outlet rubber nozzle and an elastic plug, the wire outlet rubber nozzle comprising a wire outlet body and a wire outlet nozzle arranged on the wire outlet body; the wire outlet body is arranged at a wire outlet of the motor, and a power line of the motor penetrates out of the wire outlet nozzle through the wire outlet body; the wire outlet body is arranged at the wire outlet, and the wire outlet body is deformed under the compression of a plastic-encapsulated housing to seal the wire outlet; the power line penetrates through the elastic plug, and the elastic plug is in sealed connection with the wire outlet nozzle.

IPC Classes  ?

• H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
• H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes

Abstract

A bearing (100), comprising: an inner ring (110) comprising a shaft hole (1104), the shaft hole (1104) being used for mounting a rotating shaft (210); an outer ring (120) located on the peripheral side of the inner ring (110), the outer ring (120) being in rolling connection with the inner ring (110); and a sealing component (130) arranged on the inner ring (110) or the outer ring (120), wherein the sealing component (130) is configured to be sleeved on the rotating shaft (210), and the sealing component (130) is used for sealing the peripheral side surface of the rotating shaft (210). Also provided is a motor (200).

IPC Classes  ?

• F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
• H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings

Abstract

The present application provides an end cover, an electric assembly and an electric appliance, and relates to the technical field of electric appliances. The end cover is used for the electric assembly, and comprises a body and a bearing chamber, wherein the bearing chamber is annularly arranged, a first side of the bearing chamber is connected to the body, and a second side of the bearing chamber extends in a direction away from the body in a first direction; and the body and the bearing chamber are of an integrated structure made of a thermosetting material. The body and the bearing chamber are of the integrated structure made of the thermosetting material such that the process difficulty of the end cover during production can be reduced while the overall weight of the end cover is reduced, and the production cost of the end cover is reduced, thereby reducing the production cost of the electric assembly.

IPC Classes  ?

• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields

Abstract

The present application relates to the technical field of electric appliances, and provides a stator assembly, an electric assembly, and an electric appliance. The stator assembly comprises a stator assembly, a positioning plate, and a packaging part. The positioning plate is located at a first end of the stator assembly in the axial direction and is in contact with the first end of the stator assembly; the packaging part covers the state assembly and is located at a second end of the stator assembly in the axial direction and on a side of the stator assembly in the radial direction, and a slot is formed in the side of the packaging part close to the second end of the stator assembly. The slot is formed in the side of the packaging part close to the second end of the stator assembly, thereby achieving the effect of avoiding coincidence of the resonance frequency of a motor with the drive carrier frequency, and then reducing noise caused when the motor works.

IPC Classes  ?

• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Abstract

12122≤0.6.

IPC Classes  ?

• H02K 1/2706 - Inner rotors
• H02K 1/274 - Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/22 - Rotating parts of the magnetic circuit
• H02K 1/12 - Stationary parts of the magnetic circuit
• H02K 1/16 - Stator cores with slots for windings

Abstract

11 from the first wall surface (233) to the second wall surface (234) and the maximum distance Wm between the two sides of the first wall surface (233) in the circumferential direction satisfy a certain dimensional requirement.

IPC Classes  ?

• H02K 1/2706 - Inner rotors

Abstract

An electric motor, comprising: a rotor assembly (20), a stator assembly (10), and a bearing; the rotor assembly (20) and at least part of the stator assembly (10) are arranged along the radial direction of the motor in relation to each other, and the stator assembly (10) is configured to drive the rotor assembly (20) to rotate; in the radial direction, the bearing is located between the rotor assembly (20) and the stator assembly (10); and the bearing does not extend out of the two ends of the stator assembly (10) in the axial direction of the motor.

IPC Classes  ?

• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields

Abstract

Disclosed in the present application are a rotor assembly, a motor and an electrical device. The rotor assembly comprises a rotor iron core, a rotation shaft, permanent magnets and a damping body; the rotor iron core is provided with a rotation shaft hole and magnet slots; the rotation shaft passes through the rotation shaft hole with a clearance therebetween, the permanent magnets are arranged in the magnet slots, and the damping body is filled between the rotation shaft and the rotor iron core, as well as between the rotor iron core and the permanent magnets; and the damping body covers part of the end surface of the rotor iron core and part of the end surfaces of the permanent magnets.

IPC Classes  ?

• H02K 1/278 - Surface mounted magnetsInset magnets
• H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

Abstract

The present application provides a stator blade, a stator iron core, a stator, and a motor. The stator blade is applied to a motor and comprises: a blade body, wherein an accommodating hole is formed on the blade body to accommodate a rotor assembly of the motor; and a plurality of stator slot units, arranged on the blade body along the periphery of the accommodating hole, wherein each stator slot unit comprises a plurality of stator slots, the point of each stator slot farthest from the center of the accommodating hole is a farthest point, the distance between the farthest point and the center of the accommodating hole is the radial size of the stator slot, and the radial sizes of the plurality of stator slots are sequentially increased in the clockwise or anticlockwise direction of the accommodating hole.

IPC Classes  ?

• H02K 1/16 - Stator cores with slots for windings

Abstract

A casing assembly, an electric fan, and a floor scrubber are provided. The casing assembly includes a housing and a cover plate. The housing has an open end. The cover plate has an assembly end connected to the open end. One of the open end and the assembly end is provided with an elastic sealing part, and the other is provided with a fitting part. A first annular projection and a second annular projection are arranged between the elastic sealing part and the fitting part. The first annular projection is located on an inner side of the second annular projection, or vice versa, in the radial direction of the open end. Two ends of the first annular projection abut against the elastic sealing part and the fitting part, respectively. Two ends of the second annular projection abut against the elastic sealing part and the fitting part, respectively.

IPC Classes  ?

• F04D 29/40 - CasingsConnections for working fluid
• A47L 11/40 - Parts or details of machines not provided for in groups , or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers or levers
• F04D 29/08 - Sealings

Abstract

An impeller, a fan, and an air handler. The impeller comprises a first end plate, a second end plate and a plurality of blades, wherein the second end plate and the first end plate are sequentially distributed spaced apart in the air intake direction of the impeller, and an air inlet is provided on the second end plate; the plurality of blades are distributed spaced apart in the circumferential direction of the impeller and are connected to the first end plate and the second end plate; the first end plate comprises a first plate portion and a second plate portion arranged around the periphery of the first plate portion, and the second plate portion extends obliquely in the air intake direction in the direction away from the axis of the impeller.

IPC Classes  ?

• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps

Abstract

The present application provides a rotor, a stator, a motor and a household appliance. A rotor (100) is used for a motor. The motor comprises a stator (200). The stator (200) has an inner peripheral wall (210) arranged around the rotor (100). The rotor (100) is disposed in the stator (200), and the rotor (100) can rotate around a rotation axis. The rotor (100) comprises first iron core units (110) and second iron core units (120). Each first iron core unit (110) can define a first air gap (130) together with the inner peripheral wall (210), and the first air gap (130) has a first magnetic flux density curve; and each second iron core unit (120) can define a second air gap (140) together with the inner peripheral wall (210), and the second air gap (140) has a second magnetic flux density curve, wherein the first magnetic flux density curve does not coincide with the second magnetic flux density curve.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Abstract

Provided are a diagonal impeller, a fan and a ventilation device. The diagonal impeller comprises a bottom plate (10), a top plate (20) and a plurality of blades (30). The bottom plate (10) is configured to be connected to a driving motor (40); the top plate (20) is provided with an air inlet (21); the plurality of blades (30) are connected between the bottom plate (10) and the top plate (20) and are arranged around the axis of the air inlet (21), and air outlets (34) are formed between the bottom plate (10) and the top plate (20); the diameters of circles defined by the blades (30) are unequal in the axial direction of the air inlet (21), and the outer diameter of the bottom plate (10) is less than the outer diameter of the top plate (20).

IPC Classes  ?

• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
• F04D 29/30 - Vanes
• F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the likeBalancing

Abstract

Disclosed in the present application are a stator assembly and an external-rotor electric motor. The stator assembly (100) comprises a base (110), a sleeve (120), a stator core (130) and an insulating support (140). One end of the sleeve (120) is connected to the base (110); the stator core (130) is sleeved on the outside of the sleeve (120); and the insulating support (140) is connected to the end of the stator core (130) facing the base (110), wherein the insulating support (140), the sleeve (120) and the stator core (130) together define an accommodating cavity (150).

IPC Classes  ?

• H02K 1/12 - Stationary parts of the magnetic circuit
• H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
• H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations

Abstract

Provided in the present application are a rotor core, a rotor assembly and an electric motor. The rotor core (10) comprises a plurality of core units (100) arranged around the axis of rotation of the rotor core (10), wherein one of the core units (100) is a first core unit (100a) that is disconnected from all other core units in a circumferential direction along the axis of rotation; the first core unit (100a) comprises a plurality of laminations (110) stacked in a direction parallel to the axis of rotation; one of the laminations (110) is a first lamination (110a) that comprises a first side edge (111a) and a second side edge (112a) arranged opposite each other in the circumferential direction along the axis of rotation; a first protrusion (1111a) is provided at one end of the first side edge (111a) close to the axis of rotation; and the first protrusion (1111a) comprises an abutting portion (11111a) and a spacing portion (11112a), the spacing portion (11112a) being connected between the abutting portion (11111a) and the first side edge (111a), and the spacing portion (11112a) being configured to define a first gap (130) together with a permanent magnet (210).

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

Abstract

11111.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/27 - Rotor cores with permanent magnets

Abstract

The present application provides a rotor core, a rotor assembly, and a motor. The rotor core (50) comprises multiple core units arranged around the rotation axis of the rotor core (10); an accommodating space (120) is defined between every two adjacent core units, and the accommodating space is used for accommodating a permanent magnet; one of the core units is a first core unit (100), and in the circumferential direction of the rotation axis, the first core unit (100) is disconnected from the remaining core units; the first core unit (100) comprises multiple laminations stacked in a direction parallel to the rotation axis, and one of the laminations is a first lamination (110); and a first recess (111) recessed in a direction away from the rotation axis is provided on the side of the first lamination (110) facing the rotation axis.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

Abstract

Disclosed in the present application are an electric motor and an electric appliance. The electric motor comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a stator iron core provided with an inner stator hole therein; the rotor assembly is arranged in the inner stator hole, and comprises a rotor iron core and a plurality of rotor magnetic poles which are arranged on the rotor iron core in a circumferential direction of the rotor iron core and divide the rotor iron core into a plurality of iron core units; an outer contour of at least one iron core unit comprises one or more arc segments, and the stator iron core has a circular virtual inner contour; and a first gap is formed between the outer contour of the iron core unit and the virtual inner contour of the stator iron core, and the first gap located on a first side of the iron core unit is larger than the first gap located on a second side of the iron core unit, the first side being the side of the rotor assembly in a rotating direction, and the second side being the side of the rotor assembly in a reverse rotating direction.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

Abstract

Provided are a method for detecting a junction temperature of a switch tube, an electric motor controller, an electric motor control system, and a medium. The electric motor control system includes a three-phase inverter bridge for driving an electric motor to operate. The method includes determining a tube voltage drop and a turn-on current when a lower tube of at least one phase bridge arm in the three-phase inverter bridge is turned on; determining, according to the tube voltage drop and the turn-on current, a turn-on resistance when the lower tube of the at least one phase bridge arm is turned on; and determining, according to the turn-on resistance, a junction temperature of a lower tube of the at least one phase bridge arm.

IPC Classes  ?

• G01K 7/01 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using semiconducting elements having PN junctions
• G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements

Abstract

Disclosed in the present application are an anti-vibration ring and a motor assembly. The anti-vibration ring comprises: an anti-vibration body and a mounting ring, the anti-vibration body being connected to one ring surface of the mounting ring, and an identification structure being arranged on the anti-vibration body and/or the mounting ring; and an anti-rotation limiting part, the anti-rotation limiting part comprising limiting protruded parts arranged on the edges of two opposite sides of the anti-vibration body and/or the mounting ring respectively, and at least part of the identification structure being arranged between the two limiting protruded parts.

IPC Classes  ?

• H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations

Abstract

A motor, a power assembly and a power-assisted bicycle are provided. The motor includes a housing, a stator assembly and a busbar assembly. The housing is internally formed with a cavity, and is provided with a wire passing hole. The stator assembly is disposed in the cavity and interference-connected to an inner wall of the housing. The busbar assembly is mounted at one end of the stator assembly in an axial direction, and is provided with a three-phase connection terminal penetrating through the wire passing hole. A resin material is filled between the stator assembly and the housing. The busbar assembly is further provided with a boss base mounted in the wire passing hole in a sealing manner. The three-phase connection terminal is mounted on the boss base.

IPC Classes  ?

• H02K 3/52 - Fastening salient pole windings or connections thereto
• B62M 6/40 - Rider propelled cycles with auxiliary electric motor

Abstract

A drive part, a power assembly, and an electric bicycle are provided. The drive part includes a central shaft, a shaft sleeve, a first clutch, a second clutch, and a power input member. The shaft sleeve is sleeved on the central shaft. The shaft sleeve and the central shaft are coaxially provided. The shaft sleeve and the central shaft unidirectionally transmit power by means of the first clutch. The power input member and the shaft sleeve unidirectionally transmit power through the second clutch.

IPC Classes  ?

• H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
• B62M 6/40 - Rider propelled cycles with auxiliary electric motor
• H02K 7/08 - Structural association with bearings
• H02K 7/10 - Structural association with clutches, brakes, gears, pulleys or mechanical starters

Abstract

A single-resistor measurement method, a motor control method, a controller, and a control system are provided. A direct-current bus current flowing through a single sampling resistor is obtained. When a lower tube of a phase bridge arm is switched on, a switch-on current is determined based on the direct-current bus current, and an on-tube voltage drop is obtained. A switch-on resistance is determined based on the switch-on current and the on-tube voltage drop. A three-phase current outside a current measurement dead zone is determined based on the direct-current bus current. A three-phase current inside the current measurement dead zone is determined based on the on-tube voltage drop and the switch-on resistance. A three-phase feedback current of the motor is determined based on the three-phase current outside the current measurement dead zone and the three-phase current inside the current measurement dead zone.

IPC Classes  ?

• H02P 6/08 - Arrangements for controlling the speed or torque of a single motor
• H02P 6/28 - Arrangements for controlling current
• H02P 21/13 - Observer control, e.g. using Luenberger observers or Kalman filters

Abstract

A stator assembly, a motor and a power-assisted bicycle are provided. The stator assembly includes a stator component and a busbar component. The stator component is provided with multiple segmented stator cores and segmented stator windings wound around the segmented stator cores. Each segmented stator winding has two terminals. The busbar component is installed on one end of the stator component along the axial direction. The busbar component is provided with multiple layers of bus bars, which have a plurality of connecting portions. The stator component is also provided with bridge connecting members, which are connected to each of the terminal of at least two segmented stator windings. The connecting portions are connected to the remaining terminals of the stator component in one-to-one correspondence.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto

Abstract

A fan and a cleaning device are provided. The fan has a housing assembly, a fan cover, a wind wheel, and a first diffuser. The fan cover is mounted on the housing assembly and fits with the housing assembly to form an accommodating cavity. The wind wheel is provided in the accommodating cavity and fits with a side wall of the accommodating cavity to form an air inlet channel. The first diffuser is provided in the accommodating cavity, and has first fan blades and a mounting hub. The mounting hub, the first fan blades and the side wall of the accommodating cavity together provide a first diffusion channel. The air inlet channel is in communication with the first diffusion channel in series.

IPC Classes  ?

• A47L 5/22 - Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps

Abstract

A stator assembly (100) and a motor having same. The stator assembly (100) comprises: a stator component (10), the stator component (10) comprising a plurality of stator blocks (11) which are sequentially connected to each other, and the plurality of stator blocks (11) being formed into strip-shaped structures; and a positioning holder (20), the plurality of stator blocks (11) being bent inwardly along the joints thereof so that the plurality of stator blocks (11) surround the positioning holder (20) to form an annular structure, the plurality of stator blocks (11) being arranged along the circumferential direction of the positioning holder (20), and two ends of the stator component (10) in the length direction being connected to each other.

IPC Classes  ?

• H02K 1/16 - Stator cores with slots for windings
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
• H02K 21/22 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos

Abstract

An electric blower and a cleaning apparatus are provided. The electric blower includes a shell assembly and a stator assembly. An outer wall of the shell assembly is provided with a cylindrical portion. A stator mounting portion is provided inside the shell assembly. A diffusion channel is formed between the cylindrical portion and the stator mounting portion, and is internally provided with diffusion vanes. The stator assembly is connected to the stator mounting portion and includes a stator core and a winding. The winding is connected to the stator core and protrudes to two axial ends of the stator core. A fluid channel is formed between the stator core and the stator mounting portion, and is in communication with the diffusion channel.

IPC Classes  ?

• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• A47L 5/24 - Hand-supported suction cleaners
• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• F04D 29/58 - CoolingHeatingDiminishing heat transfer

Abstract

An electric fan and a cleaning apparatus are provided. The electric fan includes a fan cover, a movable impeller, a casing assembly, a fixed impeller and an electric motor. The movable impeller is arranged in the fan cover and forms an air intake channel with the fan cover. The movable impeller includes a movable impeller body and air intake blades. The movable impeller body has a maximum outer edge diameter of D1. The casing assembly includes an outer cylinder and a supporting structure. The outer cylinder has an outer diameter of D2. The fixed impeller is connected to the supporting structure. A first diffuser channel is formed between the fixed impeller and the outer cylinder. The fixed impeller incudes a supporting base and a first diffuser blade. The supporting base has an outer diameter of D3. D2 is (1.2-1.6) time of D1. D2 is (1.15-1.6) of D3.

IPC Classes  ?

• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• A47L 5/22 - Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
• F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven

Abstract

An electric blower and a cleaning apparatus are provided. The electric blower includes a shell assembly, a wind cover, a rotary impeller and a diffuser. A stator assembly and a rotor assembly are provided inside the shell assembly. The wind cover is connected to the shell assembly. The rotary impeller is located inside the wind cover, and is connected to a rotating shaft of the rotor assembly. The diffuser is arranged at the end of the shell assembly, which faces the wind cover, and is located between the rotary impeller and the shell assembly. An outer wall of the shell assembly is provided with a cylindrical portion. Multiple circumferentially distributed mounting support legs are provided at the end of the cylindrical portion, which faces away from the wind cover. The mounting legs are used to fit with an assembly structure of a cleaning apparatus.

IPC Classes  ?

• F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
• A47L 5/24 - Hand-supported suction cleaners
• A47L 9/22 - Mountings for motor fan assemblies
• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
• F04D 29/44 - Fluid-guiding means, e.g. diffusers

Abstract

A diffuser assembly, an electric fan and a cleaning device are provided. The diffuser assembly includes an inner housing, an outer housing and diffusion blades. The outer housing and the inner housing are arranged at an interval. A diffusion channel is formed between the outer housing and the inner housing. The diffusion blades are provided in the diffusion channel and arranged in the circumferential direction of the inner housing. In the axial direction of the inner housing, the tail ends of the diffusion blades protrude out of the tail end of the inner housing.

IPC Classes  ?

• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• F04D 29/58 - CoolingHeatingDiminishing heat transfer

Abstract

A rotor structure, an electric motor structure and a clothing treating device are provided. The rotor structure includes a rotor iron core, a permanent magnet and a magnetic barrier. The rotor iron core includes rotor punching sheets arranged in a stacked manner. Permanent magnet slots are provided in the rotor iron core and the permanent magnet is disposed in the permanent magnet slots. The rotor structure rotates in one direction or two directions in a circumferential direction. In the rotation direction of the rotor structure, the magnetic barrier is provided on at least one side of the permanent magnet slot, and two ends of the magnetic barrier face an outer edge of the permanent magnet and an outer edge of the rotor iron core, respectively. The magnetic barrier is provided on a first punching sheet or a second punching sheet of the rotor punching sheets.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/16 - Stator cores with slots for windings

Abstract

A stator core assembly, a stator, and a motor. The stator core assembly comprises a core component (100) and an insulating frame chain (200). The core component (100) comprises a plurality of cores (110), and the insulating frame chain (100) comprises a plurality of insulating frames (210) connected in sequence. Each core (110) comprises a yoke part (120), a tooth part (130) and a pole piece part (140) which are connected. The pole piece part (140) is arranged at the end of the tooth part (130) facing away from the yoke part (120). The insulating frame (210) is provided with a penetrating cavity (211), and the tooth part (130) is arranged in the penetrating cavity (211).

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
• H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Abstract

A torque and speed sensing device and an electric bicycle. The torque and speed sensing device comprises a middle shaft (100), a connecting member (200), a deformation member (300), a mounting frame (400), a signal processing circuit board (500), a speed sensor (600), a permanent magnet (700), and a torque sensor (800). The outer wall of the middle shaft (100) is provided with a sensing tooth part (110). The deformation member (300) has one end fixedly connected to the middle shaft (100), and the other end fixed to the connecting member (200). The mounting frame (400) is fixedly arranged in a five-way pipe (900) and is sleeved on the periphery of the deformation member (300); the signal processing circuit board (500) is mounted on the mounting frame (400); and the speed sensor (600) is mounted on the signal processing circuit board (500) and is arranged opposite to the sensing tooth part (110). The permanent magnet (700) is mounted on the side of the signal processing circuit board (500) facing away from the speed sensor (600), and the torque sensor (800) is mounted on the mounting frame (400).

IPC Classes  ?

• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
• B62M 6/45 - Control or actuating devices therefor
• B62J 45/20 - Cycle computers as cycle accessories
• B62J 45/40 - Sensor arrangementsMounting thereof
• B62J 45/41 - Sensor arrangementsMounting thereof characterised by the type of sensor

Abstract

Disclosed in the present application are a wheel hub motor and a power-assisted electric bicycle. The wheel hub motor comprises a main shaft (100), a motor casing (200), a motor (300), a multi-stage planetary speed reduction mechanism (400) and a clutch (500). The motor casing (200) is rotatably mounted on the main shaft (100). The motor (300) is arranged in the motor casing (200). The multi-stage planetary speed reduction mechanism (400) is provided with an input end and an output end, and the input end is fixedly connected to a rotor (310). The clutch (500) comprises a driving portion (510) and a driven portion (520), the driving portion (510) is fixedly connected to the output end, and the driven portion (520) is fixedly connected to the motor casing (200), wherein the output end rotates in the first direction relative to the motor casing (200), so that the driving portion (510) is engaged with the driven portion (520), and the output end rotates in the second direction relative to the motor casing (200), so that the driving portion (510) is separated from the driven portion (520).

IPC Classes  ?

• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• B62M 7/12 - Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel

Abstract

The present application discloses a power device, a control method, a control device, and an electric bicycle. The power device comprises a crankshaft (100), a motor (200), a first one-way clutch (300), a second one-way clutch (400), a power output part (500), a first sensor (700), a second sensor (210) and a controller (800). The power output part (500) is connected to the crankshaft (100) by means of the first one-way clutch (300); an input end of a transmission assembly (600) is connected to a drive shaft of the motor (200), and an output end of the transmission assembly (600) is connected to the power output part (500) by means of the second one-way clutch (400). The controller (800) controls the output torque of the motor (200) according to the torque acquired by the first sensor (700) and the rotational speed acquired by the second sensor (210).

IPC Classes  ?

• B62M 6/45 - Control or actuating devices therefor
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts

Abstract

An electronic expansion valve, comprising a valve seat (110), a nut (210) and a connecting piece (220). The valve seat is provided with a valve cavity (101); an end of the nut (210) is mounted in the valve cavity (101); an annular positioning portion (211) protrudes from an outer wall of the nut (210); the positioning portion abuts against a cavity wall of the valve seat so as to position the cavity wall; and an end of the connecting piece (220) is fixedly connected to the nut, and the other end thereof extends away from the nut and is fixedly connected to an axial end face of the valve seat. Further disclosed is a refrigeration apparatus comprising the electronic expansion valve.

IPC Classes  ?

• F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
• F16K 1/32 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces Details
• F16K 31/50 - Mechanical actuating means with screw-spindle

Abstract

An electronic expansion valve (10), comprising a valve seat (100), a connection seat (200), a guide sleeve (300), a valve port seat (400), a valve needle assembly (500), a nut assembly (600) and a valve casing (700). By separately arranging the connection seat and the guide sleeve, the electronic expansion valve reduces the processing requirements on the connection seat and the guide sleeve, resulting in small machining allowances, low degree of cutter wear, and reduced material consumption. Meanwhile, the interior of the electronic expansion valve is further provided with a balance channel (800), so that the pressure balance in the electronic expansion valve is ensured, thus reducing the material requirements on coils and rotors. Also disclosed is a refrigeration apparatus comprising the electronic expansion valve.

IPC Classes  ?

• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
• F16K 31/50 - Mechanical actuating means with screw-spindle

Abstract

An electronic expansion valve, comprising a valve seat (100), a connecting seat (200), a guide sleeve (300) and a support structure (400). A port (110) is formed at an end of the valve seat; a valve cavity (120) in communication with the port is formed in the valve seat; the connecting seat is arranged at the port; the guide sleeve is arranged in the valve cavity, and the guide sleeve is connected to the connecting seat; and the support structure (400) is arranged on the valve seat, and abuts against a lower end face of the guide sleeve so as to support the guide sleeve. Further disclosed is a refrigeration apparatus comprising the electronic expansion valve.

IPC Classes  ?

• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor

Abstract

An electronic expansion valve and a refrigeration apparatus. The electronic expansion valve comprises a valve seat (100) and at least one connector (300). A port (110) is formed at one end of the valve seat (100); a valve chamber (120) communicated with the port (110) is formed in the valve seat (100); and the valve seat (100) is provided with at least one mounting port (130), the mounting port (130) being communicated with the valve chamber (120). The connector (300) is arranged at the mounting port (130), the connector (300) being provided with an adapter channel (310a), and one end of the adapter channel (310a) being communicated with the mounting port (130). The expansion valve saves valve seat materials, and achieves light weight.

IPC Classes  ?

• F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor

Abstract

An electronic expansion valve assembly, an electronic expansion valve and a refrigeration apparatus. The electronic expansion valve assembly comprises a connecting seat (200) and a guide sleeve (300), wherein the guide sleeve (300) is riveted with the connecting seat (200). By means of the arrangement of the electronic expansion valve assembly, the production efficiency of the electronic expansion valve assembly can be improved.

IPC Classes  ?

• F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• F25B 41/31 - Expansion valves

Abstract

An electronic expansion valve assembly, an electronic expansion valve (10), and a refrigeration appliance. The electronic expansion valve assembly comprises a guide sleeve (300) and a valve port seat (400); the valve port seat (400) is arranged on the guide sleeve (300), the valve port seat (400) is riveted to the guide sleeve (300), and the valve port seat (400) is provided with a valve port (410); the inner wall of the valve port (410) forms a flow regulation surface (411), and the flow regulation surface (411) obliquely extends downwards.

IPC Classes  ?

• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
• F16K 3/314 - Forms or constructions of slidesAttachment of the slide to the spindle
• F16K 3/316 - Guiding of the slide
• F16K 3/34 - Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• F16K 31/50 - Mechanical actuating means with screw-spindle
• F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors

Abstract

An electronic expansion valve (10), comprising a valve seat (100), a connecting seat (200), a guiding sleeve (300), a valve port seat (400), and a valve spindle assembly (700). The valve seat has a valve cavity (120), the connecting seat and the guiding sleeve is disposed in the valve cavity, and the guiding sleeve is connected to the connecting seat. The valve port seat is provided with a valve port (410), and the valve port seat is sealingly connected to the guiding sleeve. The valve spindle assembly (700) comprises a valve rod (710) and a valve head (720), and the valve head is configured to open or close the valve port. The hardness of the valve port seat (400) is less than the hardness of the valve head (720). Also disclosed is a refrigeration device comprising the electronic expansion valve.

IPC Classes  ?

• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves

Abstract

A mid-drive motor (100), comprising a housing (101), a crank shaft (102), a power output member (201), an electric motor (202), a gear reduction mechanism (203), a first one-way clutch (204) and a second one-way clutch (205), wherein the housing (101) is configured to fixedly connect to a frame (103); the crank shaft (102) penetrates the housing (101) and is rotationally connected to the housing (101); the crank shaft (102) is configured to connect to a pedal crank (105); the pedal crank (105) is connected to a pedal (106); and the first one-way clutch (204) is arranged between the power output member (201) and the crank shaft (102). Further provided is an electric bicycle. The mid-drive motor and the electric bicycle can achieve the technical effects of a simple structure and a small size.

IPC Classes  ?

• B62M 11/06 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
• B62M 6/70 - Rider propelled cycles with auxiliary electric motor power-driven at single endless flexible member, e.g. chain, between cycle crankshaft and wheel axle, the motor engaging the endless flexible member
• B62M 23/00 - Transmissions characterised by use of other elementsOther transmissions

Abstract

An electronic expansion valve assembly, comprising a connecting seat (200), a first sealing member (300) and a second sealing member (400), wherein the first sealing member (300) is arranged at the lower end of the connecting seat and is used for being fitted to an inner wall of a valve seat (100); the second sealing member (400) is arranged at the upper end of the connecting seat and is used for being fitted to the inner wall of the valve seat (100); and the connecting seat (200) is provided with a channel. The electronic expansion valve assembly is used for being mounted on a valve seat (100) of an electronic expansion valve (10). Further disclosed are an electronic expansion valve and a refrigeration apparatus, which comprise the electronic expansion valve assembly.

IPC Classes  ?

• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor

Abstract

Disclosed in the present application are a mid-drive electric motor and an electric vehicle. The mid-drive electric motor comprises a housing assembly, a crank transmission mechanism, an electric motor and a gear transmission mechanism, wherein the housing assembly is internally provided with a first mounting cavity, a second mounting cavity and a third mounting cavity; the crank transmission mechanism is mounted in the first mounting cavity at one end of the housing assembly, and the electric motor and the gear transmission mechanism are respectively mounted in the second mounting cavity and the third mounting cavity on two sides of the housing assembly, so that the mounting of the whole mid-drive electric motor can be completed; and the crank transmission mechanism, the electric motor and the gear transmission mechanism are rationally and separately arranged in the housing assembly.

IPC Classes  ?

• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• H02K 7/10 - Structural association with clutches, brakes, gears, pulleys or mechanical starters
• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
• H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
• H02K 11/01 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields

Abstract

An electronic expansion valve comprises a valve seat (10), a guide sleeve (20), a connecting pipe (30) and a welding ring (40). The valve seat (10) is provided with a valve cavity (11) and a side hole (12), the side hole (12) being communicated with the valve cavity (11). The guide sleeve (20) is arranged in the valve cavity (11) and comprises a matching section (22) in an axial direction, a first gap (51) being formed between the matching section (22) and the inner wall of the valve cavity (11). The connecting pipe (30) comprises an insertion section (32) and an inward extension section (31). The insertion section (31) passes through the side hole (11) and forms a second gap (52) with the inner wall of the side hole, the second gap (52) being communicated with the first gap (51). The inward extension section (31) extends into the valve cavity and is connected to the guide sleeve (20). The welding ring (40) is sleeved with the connecting pipe (30) and abuts against the outer wall of the valve seat (10) such that the melted welding ring (40) flows from the first gap (51) to the second gap (52) and fills the first gap (51) and the second gap (52).

IPC Classes  ?

• F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
• F16K 1/32 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces Details
• F16K 1/42 - Valve seats
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• F16K 31/50 - Mechanical actuating means with screw-spindle

Abstract

Disclosed is a connector. The connector includes a body, a wiring terminal, and a wire fixing component. The body has a terminal hole. The terminal hole has a first end and a second end. A wiring terminal is fitted in the terminal hole. The wire fixing component is detachably connected to the body and is located at the first end of the terminal hole. The wire fixing component has at least one wire passing groove. The at least one wire passing groove is aligned with the terminal hole along an axial direction of the terminal hole, and the wiring terminal abuts against the wire fixing component to prevent the wiring terminal from entering the at least one wire passing groove.

IPC Classes  ?

• H01R 13/35 - Contact members for non-simultaneous co-operation with different types of contact member, e.g. socket co-operating with either round or flat pin
• H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
• H02K 11/33 - Drive circuits, e.g. power electronics

Abstract

A fan and a floor scrubber provided with said fan. The fan (1000) comprises a casing assembly, a stator assembly (300), and a rotor assembly (400). The casing assembly comprises a housing (100) and a machine casing (200). The housing (100) is sleeved on the machine casing (200), and an air outlet channel (110) is formed between the housing (100) and the machine casing (200). The stator assembly (300) is mounted in the machine casing (200), the rotor assembly (400) is rotatably connected to the stator assembly (300), an impeller (411) is fixedly connected to a rotating shaft (410) of the rotor assembly (400), an outer wall of the machine casing (200) is provided with fins (240), and at least part of the fins (240) are located in the air outlet channel (110). Thus, heat dissipation is enhanced while good fluidity of airflow is ensured, so that both air absorption performance and heat dissipation performance are considered.

IPC Classes  ?

• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation

Abstract

A casing assembly, an electric fan, and a floor scrubber. The casing assembly comprises a housing (100) and a cover plate (200). The housing (100) is provided with an open end (110), and the cover plate (200) is provided with an assembly end (210) connected to the open end (110). One among the open end (110) and the assembly end (210) is provided with an elastic sealing part (211), and the other is provided with a fitting part (111). A first annular protrusion (112) and a second annular protrusion (212) are arranged between the elastic sealing part (211) and the fitting part (111). One among the first annular protrusion (112) and the second annular protrusion (212) is located on an inner side of the other in the radial direction of the open end (110). Two ends of the first annular protrusion (112) abut against the elastic sealing part (211) and the fitting part (111), respectively, and two ends of the second annular protrusion (212) abut against the elastic sealing part (211) and the fitting part (111), respectively. The casing assembly is provided with a two-layer sealing structure, so that the sealing performance of the casing assembly can be improved.

IPC Classes  ?

• F04D 29/40 - CasingsConnections for working fluid

Abstract

A valve needle assembly, an electronic expansion valve and a refrigeration device are provided. The valve needle assembly has a valve needle sleeve, a valve rod, a valve needle, a buffer slider and a buffer spring. The valve needle sleeve has a first open end and a second open end opposite to each other. The valve rod has a driving end movably matched with the valve needle sleeve through the first open end to drive the valve needle provided on the second open end. The buffer slider is provided in the valve needle sleeve and abuts against the valve needle. The buffer spring is provided in the valve needle sleeve, through which the driving end is connected to the buffer slider.

IPC Classes  ?

• F16K 1/48 - Attaching valve members to valve-spindles
• F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
• F16K 1/38 - Valve members of conical shape

Abstract

An electronic expansion valve and a refrigeration device are provided. The electronic expansion valve has a valve seat, a nut and a connection piece. The valve seat is provided with a valve cavity. One end of the nut is installed in the valve cavity. An outer wall of the nut is provided with an annular position part that extends from the outer wall. The position part is positioned to be in contact with a wall of the valve cavity. One end of the connection piece is fixedly connected to the nut. Another end of the connection piece is extended away from the nut and fixedly connected to an axial end surface of the valve seat.

IPC Classes  ?

• F16K 1/42 - Valve seats
• F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
• F25B 41/31 - Expansion valves

Abstract

A motor control method and a motor control apparatus, a motor controller, and a storage medium. The method comprises: during a process of controlling a motor to run at a constant power, acquiring a feedback rotation speed of the motor (S1); when it is determined that the feedback rotation speed is higher than a first rotation speed threshold, acquiring a rotation speed loop control amount according to a second rotation speed threshold and the feedback rotation speed, wherein the second rotation speed threshold is greater than the first rotation speed threshold (S2); and when it is determined that the feedback rotation speed is higher than the second rotation speed threshold, by using the second rotation speed threshold as a given amount of the rotation speed loop and using the rotation speed loop control amount as an initial control amount of the rotation speed loop, controlling the motor to run at a constant rotation speed (S3).

IPC Classes  ?

• H02P 23/00 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control
• H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
• H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters

Abstract

A water removal control method and apparatus for a washing machine, a washing machine, and a storage medium. The water removal control method for a washing machine comprises: determining a load weight value and an eccentricity measurement value of a washing machine; when the load weight value is less than or equal to a preset load weight threshold, determining a load weight interval in which the load weight value is located, and according to the load weight interval in which the load weight value is located, determining an eccentric protection value; and when the eccentricity measurement value is less than or equal to the eccentric protection value, controlling the washing machine to execute a water removal action. The washing machine can be prevented from generating violent vibrations and loud noises during the water removal process due to uneven distribution of clothes, thereby achieving the effects of prolonging the service life of the entire washing machine and improving the product use experience of a user.

IPC Classes  ?

• D06F 33/48 - Preventing or reducing imbalance or noise

Abstract

A valve needle assembly, an electronic expansion valve, and refrigeration equipment. The valve needle assembly comprises a valve needle (500), a bearing (600), and a valve rod (300). The valve needle (300) has a first end (501) and a second end (502) opposite to each other. The first end (501) is detachably mounted on a valve port (104) of the electronic expansion valve. The bearing (600) is fixedly mounted at the second end (502) by means of an outer ring. The valve rod (300) is inserted into an inner ring of the bearing (600). The technical solution aims to solve the technical problem in the prior art that a valve needle is prone to abrasion due to the fact that the valve needle rotates relative to a valve port.

IPC Classes  ?

• F16K 1/38 - Valve members of conical shape
• F16K 1/32 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces Details
• F16K 1/48 - Attaching valve members to valve-spindles
• F16K 1/50 - Preventing rotation of valve members
• F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
• F25B 41/345 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids

Abstract

A valve needle assembly, an electronic expansion valve and a refrigeration device. The valve needle assembly comprises a valve needle (500), a limiting sleeve ring (700), a bearing (600), a valve rod (300) and an elastic member (310). The valve needle (500) is provided with a first end (501) and a second end (502) opposite to each other. The first end (501) is detachably mounted on a valve port (104) of the electronic expansion valve, the limiting sleeve ring (700) is fixedly connected to the second end (502), and at least one of the second end (502) and the limiting sleeve ring (700) is provided with a mounting groove. The bearing (600) is provided in the mounting groove, and two end faces of an outer ring of the bearing (600) are limited and abutted by the valve needle (500) and the limiting sleeve ring (700), respectively. The valve rod (300) is movably inserted into an inner ring of the bearing (600) after passing through the limiting sleeve ring (700). One end of the elastic member (310) is connected to the valve rod (300), and the other end is connected to the bearing (600).

IPC Classes  ?

• F16K 1/36 - Valve members

Abstract

An electronic expansion valve and a refrigeration device. The electronic expansion valve comprises a valve housing (100) and a first conduit (200). The valve housing (100) is provided with a valve cavity (101) and a valve port (102) communicated with the valve cavity (101); the valve housing (100) comprises a valve seat (110); the valve seat (110) comprises a seat body (111) and a connecting protrusion (112) protruding out of the seat body (111); the valve port (102) is arranged in a penetrating manner from the seat body (111) to the connecting protrusion (112); the seat body (111) and the connecting protrusion (112) are integrally formed; the first conduit (200) is connected to the valve seat (110) and is communicated with the valve cavity (101) by means of the valve port (102); the inner diameter of the first conduit (200) is greater than or equal to 5 mm, and/or the wall thickness of the first conduit (200) is greater than or equal to 0.5 mm. The structure of the electronic expansion valve reduces noise of the electronic expansion valve, so that the use experience of a user is improved.

IPC Classes  ?

• F16K 47/02 - Means in valves for absorbing fluid energy for preventing water-hammer or noise
• F25B 41/31 - Expansion valves

Abstract

An electronic expansion valve and refrigeration equipment, wherein the electronic expansion valve comprises a valve housing (100), a nut (200), a valve stem (300), a guide sleeve ring (400), and a valve needle (500). The valve housing (100) is provided with a valve cavity (103) and a valve port (104) in communication with the valve cavity (103). The nut (200) is mounted in the valve cavity (103). The valve stem (300) is mounted in an inner cavity of the nut (200) and threadedly connected to the nut (200). The guide sleeve ring (400) is mounted in the valve cavity (103) located on the side of the nut (200) close to the valve port (104). The valve needle (500) passes through the guide sleeve ring (400) and is then inserted into the valve port (104), and under the driving of the valve stem (300), the valve needle (500) moves axially with respect to the valve port (104) under the guidance of the guide sleeve ring (400), so as to open or close the valve port (104). Therefore, the coaxiality of the valve needle (500) and the valve port (104) is ensured.

IPC Classes  ?

• F16K 1/32 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces Details
• F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
• F25B 41/345 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids

Abstract

A switch tube junction temperature measurement method, an electric motor controller, an electric motor control system, and a medium. The electric motor control system comprises a three-phase inverter bridge (10) for driving an electric motor to operate. The method comprises: determining a tube voltage drop and an on-current when a lower tube of at least one phase of a bridge arm in a three-phase inverter bridge is switched on (S10); determining, according to the tube voltage drop and the on-current, an on-resistance when the lower tube of the at least one phase of the bridge arm is switched on (S20); and determining a lower tube junction temperature of the at least one phase of the bridge arm according to the on-resistance (S30).

IPC Classes  ?

• H02P 29/68 - Controlling or determining the temperature of the motor or of the drive based on the temperature of a drive component or a semiconductor component
• H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation

Abstract

A single-resistor detection method, an electric motor control method, an electric motor controller, and an electric motor control system. The method comprises: acquiring a direct-current bus current that flows through a single sampling resistor, and determining, according to the direct-current bus current, an on-current when a lower tube of at least one phase of a bridge arm is switched on (S10); acquiring an on tube voltage drop when the lower tube of the at least one phase of the bridge arm is switched on (S20); according to the on-current and the on tube voltage drop when the lower tube of the at least one phase of the bridge arm is switched on, determining an on resistance when the lower tube of the at least one phase of the bridge arm is switched on (S30); and determining a three-phase current outside of a current measurement blind area according to the direct-current bus current, determining a three-phase current in the current measurement blind area according to the on tube voltage drop and the on-resistance, and determining a three-phase feedback current of an electric motor according to the three-phase current outside of the blind area and the three-phase current in the blind area (S40).

IPC Classes  ?

• H02P 21/14 - Estimation or adaptation of machine parameters, e.g. flux, current or voltage
• H02P 21/18 - Estimation of position or speed
• H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation

Abstract

A drum washing machine, and a control method and a control apparatus for same are provided. The control method for the drum washing machine comprises the following steps: acquiring an average starting power of a drum in a starting process of the drum; acquiring a load range to which a current load of the drum belongs according to the average starting power; and setting a weighing protection velocity fluctuation threshold according to the load range to which the current load of the drum belongs. A value of the current load is obtained by using a correspondence between load with different weights and average starting powers. A weighing protection velocity fluctuation threshold is set according to the value of the current load to avoid the collision with the drum and non-dehydration in case of only one piece of clothing.

IPC Classes  ?

• D06F 33/48 - Preventing or reducing imbalance or noise
• D06F 34/18 - Condition of the laundry, e.g. nature or weight
• D06F 103/04 - Quantity, e.g. weight or variation of weight
• D06F 103/46 - Current or voltage of the motor driving the drum
• D06F 105/48 - Drum speed
• D06F 33/40 - Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
• D06F 37/42 - Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Abstract

A transmission assembly, an electric motor, and an electric bicycle. The transmission assembly (1000) comprises a crankshaft (100), wherein a one-way clutch (200) and a cadence sensor (300) are arranged on the crankshaft (100), a magnetic ring (310) is arranged on a first outer ring (210) of the one-way clutch (200), and the first outer ring (210) is connected to the crankshaft (100), so that the magnetic ring (310) can rotate synchronously with the crankshaft (100); and a magnetic induction device (320) is fixedly mounted and is arranged spaced apart from the magnetic ring (310).

IPC Classes  ?

• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof

Abstract

A motor, a power assembly, and a power-assisted bicycle. The motor comprises a housing (300), a stator assembly (200), and a busbar assembly (100). A cavity is formed inside the housing (300). The housing (300) is provided with a wire passing hole (320). The stator assembly (200) is provided in the cavity and is connected to the inner wall of the housing (300) in an interference fitting manner. The busbar assembly (100) is mounted at one end of the stator assembly (200) in an axial direction and is provided with a three-phase connecting terminal (150) penetrating through the wire passing hole (320). A position between the stator assembly (200) and the housing (300) is filled with a resin material (310). Moreover, the busbar assembly (100) is further provided with a boss base (170) sealedly provided in the wire passing hole (320), and the three-phase connecting terminal (150) is mounted on the boss base (170).

IPC Classes  ?

• H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
• H02K 1/12 - Stationary parts of the magnetic circuit
• H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations
• H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges

Abstract

A hub motor and an electric vehicle; the hub motor comprises a central shaft (100) and, connected to the central shaft, a housing assembly (200), a stator assembly (300), a rotor assembly (400), and a gear assembly (500); the housing assembly (200) and the rotor assembly (400) are both supported on the central shaft (100) by means of bearings (110); the stator assembly (300) comprises a stator core (320) and a winding (310); the stator core (320) has a closed yoke (322), the outer periphery of the yoke (322) is provided with a plurality of teeth (321), the winding (310) is wound on the teeth (321), and aluminum wire is used for the winding (310); the rotor assembly (400) is provided with a permanent magnet (440), and the material of the permanent magnet (440) is ferrite; and the rotor assembly (400) is in transmission connection with the housing assembly (200) by means of the gear assembly (500).

IPC Classes  ?

• H02K 1/2786 - Outer rotors
• H02K 3/00 - Details of windings
• B62M 11/16 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
• B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
• H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
• H02K 3/52 - Fastening salient pole windings or connections thereto

Abstract

A busbar assembly, a stator assembly, an electric motor, and a power-assisted bicycle. The busbar assembly (100) comprises an annular support frame (140), a first bus bar (110), a second bus bar (120) and a third bus bar (130), wherein the first bus bar (110) is provided with a first main body part (111) embedded in the annular support frame (140), and the first main body part (111) is provided with a first opening (113); the second bus bar (120) is provided with a second main body part (121) embedded in the annular support frame (140), and the second main body part (121) is provided with a second opening (123); the third bus bar (130) is provided with a third main body part (131) and a fourth main body part (132), which are embedded in the annular support frame (140), there is a gap between the fourth main body part (132) and the third main body part (131)in an axial direction of the annular support frame (140); and the first main body part (111) is arranged spaced apart from the second main body part (121) in the axial direction of the annular support frame (140), the first opening (113) and the second opening (123) are staggered in a circumferential direction of the annular support frame (140), the third main body part (131) is located in the first opening (113), and the fourth main body part (132) is located in the second opening (123).

IPC Classes  ?

• H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
• H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto

Abstract

An in-wheel motor and an electric bicycle. The in-wheel motor (104) comprises a central shaft (203), a housing (202), a motor (201) and a speed reduction mechanism, wherein the motor (201) comprises a rotor (207) and a stator (206); the stator (206) is fixedly connected to the central shaft (203); the rotor (207) is rotationally connected to the central shaft (203) by means of a third bearing; the speed reduction mechanism comprises a primary planetary speed reduction system and a secondary planetary speed reduction system; the primary planetary speed reduction system comprises a first sun gear (301), a first gear ring (302), first planetary gears (303) and a first planetary carrier (304); the first sun gear (302) is connected to the rotor (207); the first gear ring (302) is fixed to the housing (202); the second planetary speed reduction system comprises a second sun gear (305), a second gear ring (306), second planetary gears (307) and a second planetary carrier (308); the second sun gear (305) is fixedly connected to the first planetary carrier (304); the second gear ring (306) is fixed to the housing (202); and the second planetary carrier (308) is fixedly connected to the central shaft (203).

IPC Classes  ?

• H02K 3/04 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
• H02K 3/28 - Layout of windings or of connections between windings
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• H02K 7/10 - Structural association with clutches, brakes, gears, pulleys or mechanical starters
• B62M 7/12 - Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel

Abstract

A fan, comprising: a housing assembly; a fan cover (200), which is mounted on the housing assembly and fits with the housing assembly to form an accommodating cavity; a wind wheel (300) provided in the accommodating cavity and fitting with a side wall of the accommodating cavity to form an air inlet channel (101); a first diffuser (400) provided in the accommodating cavity and comprising first fan blades (410) and a mounting hub, the mounting hub, the first fan blades (410) and the side wall of the accommodating cavity together defining a first diffusion channel (102); the air inlet channel (101) being in communication with the first diffusion channel (102) in series; multiple first fan blades (410) are provided on an outer edge of the mounting hub, the end of a front edge (411) of a first fan blade (410) connected to the mounting hub being a first end, the end of the front edge (411) of the first fan blade (410) distant from the mounting hub being a second end, and the second end being closer to the air inlet channel (101) than the first end. This can reduce fan noise, and reduce the effect on noise caused by a rotation speed increasing. Further comprised is a cleaning device.

IPC Classes  ?

• F04D 29/32 - Rotors specially adapted for elastic fluids for axial-flow pumps

Abstract

A stator assembly, a motor, and a power-assisted bicycle. The stator assembly comprises a stator assembly (200) and a bus bar assembly (100); the stator assembly (200) is provided with a plurality of block stator cores (210), and block stator windings (220) wound on the block stator cores (210); each block stator winding (220) has two terminals (221); the bus bar assembly (100) is installed on one end of the stator assembly (200) along the axial direction; the bus bar assembly (100) is provided with multiple layers of bus bars; each bus bar has a plurality of connecting portions; the stator assembly (200) is also provided with bridge connecting members (230); each bridge connecting member (230) is connected to one of the terminals (221) of each of at least two block stator windings (220); the connecting portions are connected to the remaining terminals (221) of the stator assembly (200) in one-to-one correspondence.

IPC Classes  ?

• H02K 3/28 - Layout of windings or of connections between windings
• H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
• H02K 3/46 - Fastening of windings on the stator or rotor structure
• B62M 6/40 - Rider propelled cycles with auxiliary electric motor

Abstract

A drive part, a power assembly, and an electric bicycle. The drive part comprises a central shaft (100), a shaft sleeve (200), a first clutch (310), a second clutch (320), and a power input member (400). The shaft sleeve (200) is sleeved on the central shaft (100); the shaft sleeve (200) and the central shaft (100) are coaxially provided; the shaft sleeve (200) and the central shaft (100) unidirectionally transmit power by means of the first clutch (310); and the power input member (400) and the shaft sleeve (200) unidirectionally transmit power by means of the second clutch (320).

IPC Classes  ?

• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 6/40 - Rider propelled cycles with auxiliary electric motor

Abstract

A stator assembly, a hub motor and an electric vehicle; the stator assembly (300) comprises a stator core (320), a stator frame (330), a support bracket (340) and a Hall plate (350); the stator core (320) has a closed yoke, the outer periphery of the yoke is provided with a plurality of teeth, a winding (310) is connected to the teeth, the stator frame (330) is fixedly connected to the stator core (320), and the stator frame (330) is disposed in the yoke; the support bracket (340) is connected to the stator frame (330), the support bracket (340) is provided with at least one Hall plate mount (341), the Hall plate (350) is connected to the Hall plate mount (341), the Hall plate (350) is connected to at least one Hall sensor (351), and the Hall sensor (351) is located on the outer side of the winding (310) along the radial direction of the stator core (320).

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Abstract

The present application provides a connecting assembly and a motor. The connecting assembly comprises a first shell; a contact pin provided on the first shell; a second shell detachably connected to the first shell, the contact pin being inserted into the second shell; and a connecting line provided on the second shell and connected to the contact pin. According to the present application, the contact pin and the first shell which can be connected to an internal electrical structure of the motor are arranged, the second shell detachably connected to the first shell is provided in a matched mode, and the connecting line synchronously connecting the contact pin is provided in the second shell. The process steps of welding the connecting line and a winding are omitted. Compared with the welding process, the plug-in connection structure can omit a large amount of labor cost, and can remarkably shorten the production time, such that the technical problems of high welding labor cost and low efficiency are solved.

IPC Classes  ?

• H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
• H02K 11/00 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
• H01R 13/40 - Securing contact members in or to a base or caseInsulating of contact members

Abstract

An electric fan and a cleaning apparatus. The electric fan comprises a fan cover (100), a movable impeller (200), a casing assembly (400), a fixed impeller (300), and an electric motor. The movable impeller (200) is arranged in the fan cover (100) and forms an air intake channel (110) with the fan cover (100), and the movable impeller (200) comprises a movable impeller body (210) and an air intake blade (220), the movable impeller body (210) having a maximum outer edge diameter of D1; the casing assembly (400) comprises an outer cylinder (410) and a supporting structure, the outer cylinder (410) having an outer diameter of D2; and the fixed impeller (300) is connected to the supporting structure, a first diffuser channel (310) is formed between the fixed impeller (300) and the outer cylinder (410), and the fixed impeller (300) comprises a supporting base (320) and a first diffuser blade (330), the supporting base (320) having an outer diameter of D3, wherein D2 = (1.2-1.6) D1, and D2 = (1.15-1.6) D3.

IPC Classes  ?

• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• F04D 29/58 - CoolingHeatingDiminishing heat transfer
• F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps

Abstract

An electric blower, comprising a shell assembly (100), a wind cover (600), a rotary impeller (500) and a diffuser, wherein a stator assembly (200) and a rotor assembly (300) are provided inside the shell assembly (100); the wind cover (600) is connected to the shell assembly (100); the rotary impeller (500) is located inside the wind cover (600), and is connected to a rotating shaft (310) of the rotor assembly (300); the diffuser is arranged at the end of the shell assembly (100) that faces the wind cover (600), and is located between the rotary impeller (500) and the shell assembly (100); an outer wall of the shell assembly (100) is provided with a cylindrical portion (110); a plurality of circumferentially distributed mounting support legs (150) are provided at the end of the cylindrical portion (110) that faces away from the wind cover (600); and the mounting support legs (150) are used to fit with an assembly structure of a cleaning apparatus. In addition, the present disclosure also relates to a cleaning apparatus having the electric blower. The structures of the electric blower and the cleaning apparatus are conducive to the assembly and post-maintenance of the cleaning apparatus.

IPC Classes  ?

• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation

Abstract

An electric blower and a cleaning apparatus. The electric blower comprises a shell assembly (100) and a stator assembly (200), wherein an outer wall of the shell assembly (100) is provided with a cylindrical portion (110); a stator mounting portion (120) is provided inside the shell assembly (100); a diffusion channel (101) is formed between the cylindrical portion (110) and the stator mounting portion (120), and is internally provided with diffusion vanes (410); the stator assembly (200) is connected to the stator mounting portion (120), and comprises a stator core (210) and a winding (220); the winding (220) is connected to the stator core (210) and protrudes to two axial ends of the stator core (210); and a fluid channel (201) is formed between the stator core (210) and the stator mounting portion (120), and is in communication with the diffusion channel (101).

IPC Classes  ?

• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation

Abstract

A diffuser assembly, wherein the diffuser assembly comprises an inner housing (310), an outer housing (320), and diffusion blades. The outer housing (320) and the inner housing (310) are arranged at an interval. A diffusion channel is formed between the outer housing (320) and the inner housing (310). The diffusion blades are provided in the diffusion channel and arranged in the circumferential direction of the inner housing (310). In the axial direction of the inner housing (310), the tail ends of the diffusion blades protrude out of the tail end of the inner housing (310). Also provided are an electric fan and a cleaning device.

IPC Classes  ?

• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
• F04D 29/58 - CoolingHeatingDiminishing heat transfer

Abstract

A heating assembly of a heating pump (1000), and a heating pump (2000), and an electric washing appliance. The heating assembly of the heating pump (1000) comprises a pump cover (100), a heating tube (200), a thermally conductive member (500), and a temperature protector (300). The pump cover (100) is used to cover a heating chamber of the heating pump (1000). The side of the pump cover (100) that faces the heating chamber is an inner side surface, and the side of the pump cover that is away from the heating chamber is an outer side surface. The pump cover (100) is provided with a through hole (130) in communication with the heating chamber. The heating tube (200) is connected to the pump cover (100) and is at least partially located in the heating chamber. The thermally conductive member (500) covers the through hole (130). The temperature protector (300) is arranged on the outer side surface and is electrically connected to the heating tube (200). A temperature sensing surface of the temperature protector (300) is attached to the thermally conductive member (500).

IPC Classes  ?

• A47L 15/42 - Washing or rinsing machines for crockery or table-ware Details
• A47L 15/00 - Washing or rinsing machines for crockery or table-ware
• F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
• F04D 29/58 - CoolingHeatingDiminishing heat transfer
• F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps

Abstract

A closed-loop switching method and apparatus for an electric motor, and an electronic device and a storage medium, wherein the method comprises: testing a zero-crossing signal of a back-electromotive force signal of an electric motor (S101); determining whether an interference signal exists in the zero-crossing signal (S102); if it is identified that the interference signal exists, performing closed-loop switching according to a target switching policy (S103); and if it is identified that the interference signal does not exist, directly using a first preset rotation speed as an initial speed of the electric motor after same is switched to a closed-loop operation stage (S104). By means of the method, anti-interference processing can be performed after an interference signal is detected, thereby avoiding the influence of the interference signal on a testing result of a zero-crossing signal, and thus also weakening the influence of the interference signal on a closed-loop switching operation, so that an electric motor can switch to a closed-loop stage more reliably, and in particular, the starting reliability of the electric motor in a strong magnetic field environment is enhanced.

IPC Classes  ?

• H02P 6/182 - Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings

Abstract

Provided in the embodiments of the present application are a rotor structure, an electric motor structure, and a clothing treating device. The rotor structure comprises: a rotor iron core, a plurality of permanent magnet slots being provided in the rotor iron core, and the rotor iron core comprising a plurality of rotor punching sheets arranged in a stacked manner; a permanent magnet, disposed in the permanent magnet slot; and a magnetic barrier, the rotor structure being capable of rotating in one direction or rotating in two directions in a circumferential direction, and in the rotation direction of the rotor structure, the magnetic barrier being provided on at least one side of the permanent magnet slot, and two ends of the magnetic barrier facing an outer edge of the permanent magnet and an outer edge of the rotor iron core respectively, wherein the plurality of rotor punching sheets comprises at least one first punching sheet and at least one second punching sheet, and the magnetic barrier is provided on the first punching sheet or the second punching sheet. In the technical solution of the present application, the magnetic barrier is selectively provided on the first punching sheet or the second punching sheet, and under the action of the punching sheet without the magnetic barrier, some non-magnetically conductive materials that may hinder the normal processing of the rotor iron core are isolated, thereby reducing the possibility of the non-magnetically conductive materials entering the magnetic barrier.

IPC Classes  ?

• H02K 1/27 - Rotor cores with permanent magnets

Abstract

An electric motor and an electrical appliance are provided. The electric motor includes a rotating shaft, a stator, a rotor disposed on the rotating shaft, spaced apart from the stator, and embedded in the stator, a first end cover, and a first bearing. The first bearing includes a first outer ring fixed on the first end cover and insulated from at least part of the first end cover, a first inner ring embedded in the first outer ring, and a first ball disposed between the first outer ring and the first inner ring. The rotating shaft is fixed on the first inner ring and rotationally supported on the first end cover. The part of the first end cover that is insulated from the first outer ring is short-circuited with a stator core of the stator and is grounded.

IPC Classes  ?

• H02K 11/40 - Structural association with grounding devices
• F16C 19/00 - Bearings with rolling contact, for exclusively rotary movement
• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
• H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
• H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
• H02K 7/08 - Structural association with bearings

Abstract

A rotor, a motor, and a household appliance. The rotor comprises a rotating shaft (100), an iron core (200), an end ring (300), a magnet (400), and a shielding member (500). The iron core (200) is arranged around an outer peripheral wall of the rotating shaft (100), the end ring (300) is located at one end of the iron core (200) along an axial direction of the rotating shaft (100), and an end portion of the end ring (300) distant from the iron core (200) is provided with a groove (310). The magnet (400) is mounted at the groove (310). The shielding member (500) is made of a magnetically conductive material, and the shielding member (500) is mounted at the groove (310) and is located at a side of the magnet (400) facing the iron core (200).

IPC Classes  ?

• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
• H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
• H02K 17/16 - Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors

Abstract

A rotor, a motor, and a household appliance. The rotor comprises a rotating shaft (100), an iron core (201), an end ring (300), a magnet (400), and a shielding component (500); the iron core (201) is wound on the outer peripheral wall of the rotating shaft (100), the end ring (300) is located at one end of the iron core (201) in the axial direction of the rotating shaft (100), and a groove (310) is formed in the end portion of the end ring (300) away from the iron core (201); the magnet (400) is mounted in the groove (310); the shielding component (500) is made of a magnetically conductive material, and the shielding component (500) is mounted in the groove (310) and located on the side of the magnet (400) facing the iron core (201).

IPC Classes  ?

• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
• H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
• H02K 17/16 - Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors

Abstract

An electric motor and an electrical appliance. The electric motor (1000) comprises a housing, a rotor assembly (200), a stator assembly (100) disposed in the housing, and an end cover (300). The end cover (300) is connected to the housing to form a cavity used for accommodating the rotor assembly (200). The rotor assembly (200) is rotatably arranged in the cavity. A plurality of mounting bases (310) protruding outwards are arranged along the outer periphery of the end cover (300). The mounting bases (310) are connected to the end cover (300) and have mounting holes. The space between each mounting base (310) and the end cover (300) is hollowed out to form through holes (321). A plurality of heat dissipation ribs (121) are arranged at intervals at the outer side of the housing along the circumferential direction of the housing.

IPC Classes  ?

• H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
• H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
• H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
• H02K 1/27 - Rotor cores with permanent magnets

Abstract

A rotor assembly, a motor, and a household appliance. The rotor assembly (1000) comprises a rotor iron core (100), permanent magnets (200), and an injection molded body (300). The rotor iron core (100) comprises an inner iron core (110) and an outer iron core (120), the inner iron core (110) is provided with a shaft hole (111) used for mounting a rotating shaft (2000), the outer iron core (120) is provided with accommodating grooves (170), the outer iron core (120) and the inner iron core (110) are spaced apart from each other, the permanent magnets (200) are mounted in the accommodating grooves (170), and the injection molded body (300) is at least filled between the inner iron core (110) and the outer iron core (120). The outer iron core (120) comprises a plurality of outer iron core units arranged around the inner iron core (110) in a spaced manner, and the accommodating grooves (170) are formed between adjacent outer iron core units; the inner iron core (110) comprises a first annular ring piece (131) and a second annular ring piece (141) which are laminated along the axial direction of the rotor iron core (100), the outer periphery of the first annular ring piece (131) protrudes outwards with respect to the outer periphery of the second annular ring piece (141) to form a plurality of first protrusions (1311), and the first protrusions (1311) are distributed in a spaced manner along the peripheral direction of the first annular ring piece (131).

IPC Classes  ?

• H02K 1/27 - Rotor cores with permanent magnets

Abstract

A motor, a compressor, and a fan. The motor (8) comprises a rotor core (4), rotor slots, and a stator core (1). The rotor slots are arranged through the rotor core (4), and the rotor slots are inclined with respect to the axial direction. The stator core (1) is disposed on one side of the rotor core (4). The stator core (1) comprises stator teeth (10) facing the rotor core (4), air gaps (13) are provided between the stator teeth (10) and the rotor core (4), and at least some of the air gap (13) are not equal. Inclined rotor slots are provided on the rotor core, and air gaps that are not completely equal or completely unequal are formed between the stator teeth and the rotor core, so as to satisfy the requirements of reducing the low-speed harmonic torque fluctuation and improving the output performance of the motor, so that the starting additional torque and rated performance of the motor can be matched with each other.

IPC Classes  ?

• H02K 1/26 - Rotor cores with slots for windings
• H02K 1/14 - Stator cores with salient poles

Abstract

A control apparatus and a laundry treating apparatus. The control apparatus is used for controlling a motor (900). The control apparatus comprises at least two buses (100), a first control component (202), and at least two capacitors (300). The at least two buses (100) are used for being connected to the motor (900). One end of the first control component (202) is connected to one bus (100) of the at least two buses (100). One end of one capacitor (300) of the at least two capacitors (300) is connected to the other end of the first control component (202); the other end of the capacitor (300) is connected to the other bus (100) of the at least two buses (100); and both ends of the other capacitor (300) of the at least two capacitors (300) are connected to the at least two buses (100), respectively. When the motor (900) is driven by the control apparatus, the first control component (202) can control whether the capacitor (300), connected in series to the first control component (202), of the at least two capacitors (300) is connected to the control apparatus, thereby reducing system low-frequency noise caused by torque ripple of the control apparatus.

IPC Classes  ?

• H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• D06F 34/08 - Control circuits or arrangements thereof
• H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters

Abstract

Provided are a permanent magnet, a rotor assembly and an electric motor. The permanent magnet is used in the electric motor, and comprises: a first end face; a second end face arranged opposite and spaced apart from the first end face; a first side face; a second side face, wherein both the first side face and the second side face are positioned between the first end face and the second end face, are arranged opposite each other, and are both suitable for extending in a direction from a central portion to an edge of a rotor core of the electric motor; and a transition surface positioned between the first side face and the second end face and/or between the second side face and the second end face, wherein the distance from the transition surface to the first end face is smaller than the distance from the first end face to the second end face. The present application is favorable for reducing a back electromagnetic force harmonic wave, a cogging torque and a torque ripple.

IPC Classes  ?

• H02K 1/27 - Rotor cores with permanent magnets
• H01F 7/02 - Permanent magnets

Abstract

A diffuser, an air supply device and a vacuum cleaning equipment are provided. The diffuser has a base ring member and multiple rows of stationary blades. Each row of stationary blades is disposed on an outer ring wall of the base ring member along an axial direction of the base ring member, and is arranged along a circumferential direction of the base ring member. Opposite sides of the base ring member are respectively an air-inlet side and an air-outlet side. A chord length of each stationary blade in one row is greater than or equal to the chord length of each stationary blade in a next adjacent row. The installation angle of each stationary blade in one row is smaller than or equal to the installation angle of each stationary blade in the next adjacent row.

IPC Classes  ?

• F04D 29/44 - Fluid-guiding means, e.g. diffusers
• A47L 5/22 - Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans

Abstract

Disclosed is a connector. The connector comprises a body, a wiring terminal and a wire fixing component, wherein the body is provided with a terminal hole; the terminal hole is provided with a first end and a second end; the wiring terminal is fitted in the terminal hole; the wire fixing component is detachably connected to the body and located at the first end of the terminal hole; the wire fixing component is provided with a wire passing groove; the wire passing groove is aligned with the terminal hole in the axial direction of the terminal hole; and the wiring terminal abuts against the wire fixing component to prevent the wiring terminal from entering the wire passing groove. The connector of the present disclosure has the characteristics of a simple structure, a strong reliability and an effective anti-dropping performance.

IPC Classes  ?

• H01R 13/426 - Securing in a demountable manner by separate resilient retaining piece supported by base or case, e.g. collar
• H01R 13/432 - Securing in a demountable manner by resilient locking means on the contact membersSecuring in a demountable manner by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case
• H01R 13/436 - Securing a plurality of contact members by one locking piece

Abstract

A rotating motor and a fan are provided. In the rotating motor, by arranging a first bearing seat, a second bearing seat, and a plurality of support rods to form the supporting frame, the coaxiality between the first bearing seat and the second bearing seat can be ensured to reduce the accumulated tolerance of assembly. In addition, the motor has a stator having stator teeth. The inner diameter of the inner circular hole of the stator teeth is disposed to be larger than the outer diameter of the second bearing seat.

IPC Classes  ?

• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
• H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
• H02K 7/08 - Structural association with bearings
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• H02K 15/14 - CasingsEnclosuresSupports

Abstract

A rotating motor and a fan are provided. A first bearing seat, a second bearing seat and a plurality of support rods of the motor are arranged to form a supporting frame of the motor. Accordingly, the coaxiality between the first bearing seat and the second bearing seat can be ensured. The motor has a rotor. The outer diameter of the permanent magnet of the rotor is disposed to be greater than or equal to the outer diameter of a second bearing of the rotor. The outer diameter of a first bearing of the rotor is disposed to be greater than or equal to the outer diameter of the permanent magnet of the rotor. Accordingly, the entire rotor of the rotating motor can be directly mounted on the supporting frame.

IPC Classes  ?

• H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
• H02K 1/14 - Stator cores with salient poles
• H02K 1/16 - Stator cores with slots for windings
• H02K 5/15 - Mounting arrangements for bearing-shields or end plates
• H02K 7/08 - Structural association with bearings
• H02K 11/33 - Drive circuits, e.g. power electronics

Abstract

The present application relates to the field of motors, and provides a motor and a harmonic noise optimization method and device therefor. The method comprises: acquiring noise spectrum information of a motor under operating conditions; determining harmonic noise included in the noise spectrum information; adjusting voltage parameters of injected compensation voltages according to a predetermined adjustment range, and determining the voltage parameter of a compensation voltage leading to a minimum noise value of the harmonic noise; and performing voltage compensation on the motor according to the determined voltage parameter of the compensation voltage. According to the present application, on the basis of harmonic noise, a corresponding compensation voltage is found for voltage compensation, so that voltage compensation can be more accurately performed on the harmonic noise of the motor, and the quality of the motor is further improved.

IPC Classes  ?

• H02P 29/50 - Reduction of harmonics

Abstract

An electronic expansion valve and a refrigeration device. The electronic expansion valve comprises a valve seat (110), a nut (210), and a connecting piece (220). The valve seat (110) is provided with a valve cavity (101). One end of the nut (210) is mounted in the valve cavity (101). The outer wall of the nut (210) is convexly provided with an annular positioning portion (211). The positioning portion (211) abuts against the cavity wall of the valve seat (110) for positioning. One end of the connecting piece (220) is fixedly connected to the nut (210), and the other end extends away from the nut (210) and is fixedly connected to the axial end surface of the valve seat (110).

IPC Classes  ?

• F16K 1/48 - Attaching valve members to valve-spindles
• F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
• F16K 31/50 - Mechanical actuating means with screw-spindle

Abstract

A valve needle assembly, an electronic expansion valve and a refrigeration apparatus. The valve needle assembly comprises a valve needle sleeve (120), a valve rod (110), a valve needle (150), a buffer sliding block (140) and a buffer spring (130), wherein the valve needle sleeve (120) is provided with a first open end (121) and a second open end (123), which are opposite each other; the valve rod (110) is provided with a driving end, and the driving end of the valve rod (110) is movably fitted with the valve needle sleeve (120) via the first open end (121) so as to drive the valve needle (150) to act; the valve needle (150) is mounted at the second open end (123) of the valve needle sleeve (120); the buffer sliding block (140) is disposed inside the valve needle sleeve (120), and the buffer sliding block (140) abuts against the valve needle (150); and the buffer spring (130) is disposed inside the valve needle sleeve (120), and the driving end of the valve rod (110) is connected to the buffer sliding block (140) by means of the buffer spring (130).

IPC Classes  ?

• F16K 1/48 - Attaching valve members to valve-spindles
• F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
• F16K 31/50 - Mechanical actuating means with screw-spindle

Abstract

The present application provides a brushless motor and an electrical equipment. The brushless motor includes: a casing, a stator, and a rotor. The stator includes a stator core and a winding. The rotor includes a rotor core and a shaft. Two bearings are sleeved on the shaft at positions corresponding to two ends of the rotor core, respectively. The two bearing brackets are installed at two ends of the casing. The brushless motor further includes a conductive sheet, configured for adjusting a capacitive reactance between the stator core and each of the two bearing brackets. The conductive sheet is attached to an outer circumferential surface of the casing. The conductive sheet and the stator core each at least partially has an area aligned to each other in a radial direction of the casing.

IPC Classes  ?

• H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
• F16C 41/00 - Other accessories for bearings
• H02K 7/08 - Structural association with bearings

Abstract

A stator assembly and a motor are provided. The stator assembly has a stator core and a winding. The stator core has a stator yoke portion, at least one stator tooth, and at least one winding. The stator tooth is disposed along the axial direction of the stator yoke portion. The stator tooth is detachably connected to the stator yoke portion. The winding is wound on the stator tooth. The stator yoke portion is provided with a stator yoke groove and/or a stator projection adapted to the shape of the stator tooth. The stator tooth passes through the stator yoke groove and/or the stator projection to form the stator core

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 16/02 - Machines with one stator and two rotors

Abstract

A fan is provided. The fan has a motor and a first rotating shaft. The motor has a stator assembly, a rotor and a winding. The stator assembly has a stator yoke portion and a stator tooth detachably connected to each other. The winding is wound on the stator tooth. The stator yoke portion has a stator yoke slot and/or a stator projection, adapted to the shape of the stator tooth. The stator tooth axially pass through the stator yoke slot and/or the stator projection to form a stator core. A first fan blade is arranged at an end of the first rotating shaft to rotate the first fan blade when the first rotating shaft rotates.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 1/16 - Stator cores with slots for windings
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Abstract

A rotor assembly (100) and a motor. The rotor assembly (100) comprises a rotor iron core (10), a permanent magnet (20), a rotating shaft (30), a first end vibration damping member (61), and a first transmission piece (51). The rotor iron core (10) is provided with a magnet recess (102) and a rotating shaft hole (101); the permanent magnet (20) is provided in the magnet recess (102); the rotating shaft (30) is provided in the rotating shaft hole (101); a gap is formed between the rotating shaft (30) and the rotor iron core (10); a first end and a second end of the rotating shaft (30) extend out of the rotating shaft hole (101); the first end vibration damping member (61) is provided on a first end face of the rotor iron core (10) and connected to the rotor iron core (10); a transmission piece is provided in the first end vibration damping member (61); the first transmission piece (51) mates with the rotating shaft (30); the rotor iron core (10) at least drives the rotating shaft (30) by means of the first end vibration damping member (61) and the first transmission piece (51). According to the rotor assembly (100), the material amount of the vibration damping member is large, the noise reduction and vibration damping effects are good, and reliability is high.

IPC Classes  ?

• H02K 1/27 - Rotor cores with permanent magnets
• H02K 1/28 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

Abstract

The present application provides a motor rotor position detection method, a device, and a motor controller. The method comprises: after a first interference signal having a frequency f is injected into a motor drive loop, acquiring, from a drive current, a positive-sequence current component having a frequency of f and a negative-sequence current component having a frequency of f1, wherein f1 is less than f; acquiring a current drive current feedback value; determining a current reference coefficient value according to the current drive current feedback value; determining a current offset angle according to the current reference coefficient value, an amplitude of the positive-sequence current component having a frequency of f, and an amplitude of the negative-sequence current component having a frequency of f1; and determining a current position of a motor rotor according to the current offset angle. The method determines an offset angle of a rotor of a motor rotor according to an injected interference signal and a drive current feedback value of the motor, and in turn determines a position of the rotor of the motor by means of the offset angle, thereby improving accuracy of rotor position detection.

IPC Classes  ?

• H02P 6/18 - Circuit arrangements for detecting position without separate position detecting elements
• H02P 25/026 - Synchronous motors controlled by supply frequency thereby detecting the rotor position

Abstract

Disclosed are a rotary electric motor (10) and a fan (100) having same. The rotary electric motor (10) is provided with a first bearing seat (41), a second bearing seat (42) and a plurality of supporting rods (43) to form a supporting frame (40), such that the coaxiality between the first bearing seat (41) and the second bearing seat (42) is guaranteed, accordingly, the coaxiality between a first bearing (23) and a second bearing (24) is guaranteed and an accumulated assembly tolerance is reduced; and the outer diameter of a permanent magnet (22) is set to be greater than or equal to the outer diameter of the second bearing (24), and the outer diameter of the first bearing (23) is set to be greater than or equal to the outer diameter of the permanent magnet (22), thus, a rotor (20) can be integrally installed on the supporting frame (40) to facilitate assembly, and the dynamic balance of the rotor (20) can be better adjusted and calibrated, such that the working performance and reliability of the rotary electric motor (10) can be guaranteed.

IPC Classes  ?

• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
• H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields