A cooling wheel (1) for actively cooling a stator (2) of an electric motor (3). The cooling wheel (1) can be fixed in a rotationally fixed manner adjacent to the stator (2) on a rotor (4) of the electric motor (3), which is rotatable about an axis of rotation (A). The cooling wheel has a bottom disc (10) that extends orthogonally to the axis of rotation (A) with an annular radially inner portion (12) and a radially outer portion annularly extending around it. The cooling wheel (1) has, in the axial direction adjacent to the radially outer portion of the bottom disc (10), a cover disc (30) that annularly extends around the axis of rotation (A). A plurality of blades (20) extend from the bottom disc (10) to the cover disc (30) and radially outwards. A flow channel is formed between two immediately adjacent blades (20) which is delimited by the two blades (20), a portion (11) of the bottom disc (10), located between the two blades and a portion (31) of the cover disc (30), located between the two blades (20). The respective portion (31) of the cover disc (30) is designed to be arcuate in the circumferential direction (U). The cover disc (30) has an undulating profile on its outer circumference (32).
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 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
The present disclosure relates to a motor control circuit and to a method for monitoring at least one DC link capacitor in an electrical DC link of a motor control circuit of an electrically commutated (EC) motor with motor windings, which is operated on a voltage source, in which rectifier diodes of the rectifier close as intended in order to prevent energy consumption from the voltage source for a defined period of time, wherein a DC link capacitance (CZK) of the DC link capacitor is determined, and a remaining service life or an end of service life and/or useful life of the DC link capacitor is determined from the determined DC link capacitance (CZK) by means of an evaluation circuit.
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electrical engines, Gear motors, Electronic control and regulating apparatus for electric motor drives, pumps and other turbomachines with an electromotive drive; Axial flow blowers; centrifugal blowers. Apparatus for ventilating; Ventilating fans. Engineering services, in particular for developing ventilating apparatus and electric motors.
5.
Aerodynamic bearing for axial and radial mounting of a shaft and turbo compressor with such a bearing
An aerodynamic bearing for mounting a shaft for a turbo compressor having two annular axial bearing disks and a hollow cylindrical radial bearing bush. The two axial bearing disks are spaced apart and form a cavity between them for receiving a shaft sleeve connected to the shaft, and the two axial bearing disks each have an axial bearing surface facing the cavity for forming an axial gas cushion in an axial bearing gap between the axial bearing surface and the shaft sleeve. The radial bearing bush has a radial bearing surface radially inward for forming a radial gas cushion in a radial bearing gap between the radial bearing surface and the shaft for the radial mounting of the shaft, and the radial bearing bush is formed integrally and/or materially with one of the axial bearing disks as a combination bearing bush.
An aerodynamic bearing for axial and/or radial mounting of a shaft for a turbocompressor extending along an axis of rotation, wherein the aerodynamic bearing has a first bearing part denotable as a rotor, and a second bearing part denotable as a stator with respect to which the first bearing part is rotatable about the axis of rotation. The first bearing part and/or the second bearing part have a bearing surface facing the respective other bearing part and on which an air cushion for aerodynamic mounting is generatable between the bearing parts. The bearing surface has a plurality of depressions, each following a predetermined longitudinal profile on the bearing surface and arranged to form a predetermined pattern. The depressions each have, over their respective longitudinal profiles on the bearing surface, a varying depth which is determined by a depth profile restricted to a predetermined number of depth levels.
F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
7.
COOLED AERODYNAMIC THRUST BEARING AS WELL AS TURBOCOMPRESSOR WITH SUCH A THRUST BEARING
A cooled aerodynamic thrust bearing for axially mounting a shaft for a turbocompressor extending along an axis of rotation A, having two annular thrust bearing washers arranged concentrically with respect to the axis of rotation, wherein the two thrust bearing washers are spaced apart in the axial direction by a spacer washer and form a cavity between them in the axial direction for receiving a shaft sleeve connected to the shaft. The spacer washer extends beyond the thrust bearing washers in the radial direction and is formed to maintain the thrust bearing washers at a predetermined axial distance by means of an annular, radially inner section, and to dissipate heat from the cavity and/or from the thrust washers radially outwards by means of an annular, radially outer cooling section formed as a heat sink.
An aerodynamic bearing for axial and/or radial mounting of a shaft for a turbocompressor, wherein the aerodynamic bearing has a first bearing part denotable as a rotor, and a second bearing part denotable as a stator. The first bearing part and/or the second bearing part have a bearing surface facing the respective other bearing part and on which a gas cushion for aerodynamic mounting is generatable between the bearing parts. The bearing surface has a plurality of depressions, each following a predetermined longitudinal profile on the bearing surface and arranged to form a predetermined pattern. The longitudinal profile has two sections which merge into one another at an apex located on an apex line which is displaced in parallel with respect to a center line of the bearing surface, so that the longitudinal profile is asymmetrical with respect to the center line.
F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
A turbocompressor with an impeller rotatable about an axis of rotation for conveying a fluid, a diffuser downstream of the impeller in terms of flow, and a clamping ring for fixing a thrust bearing axially mounting the impeller in a bearing receptacle. The diffuser and the clamping ring are formed integrally and in a single piece with each other as a unit.
The present disclosure relates to a flow-generation system and to a method for its operation. The flow-generation system has a plurality of flow-generation units, which are each configured to generate an individual fluid flow, in particular an air flow. For this purpose, the flow-generation unit can comprise an electromotively operated fan, for example. A local controller has a processor, a working memory, and a process scheduler, and is connected to a communication network for communication via a communication interface. A control task can be processed in parallel by a network group by means of a plurality of local controllers of the flow-generation units belonging to the network group when one single local controller does not have enough computing power and/or memory capacity for processing the control task. In this case, complex control tasks can also be processed without an internet-based service (cloud service) connected to the flow-generation system or a server or increased computing and memory capacity of the local controllers necessarily being required for this purpose.
The present disclosure refers to a method for operating a flow producing system as well as a flow producing system configured to carry out the method. The flow producing system has at least one flow producer group having multiple flow producing units respectively. The flow producing units can be fans, for example. The flow producing units of a common flow producer group are fluidically connected to a common flow space and are controlled by means of a control device to which a set point parameter is predefined for open-loop or closed-loop control purposes. At least one flow producing unit from the flow producer group is selected and an individual set point operating condition is determined respectively. The respectively determined set point operating condition is checked for allowability based on an individual operation limitation in each case. If necessary two or more set point operating conditions are modified until all of the set point operating conditions of the selected flow producing units are allowable.
The present disclosure refers to a method for operating a flow producing unit as well as a control system comprising at least one flow producing unit. The flow producing unit is particularly a rigidly installed system in a building. The flow producing unit has a fan control, which controls a fan for producing an airflow. A control model is provided to fan control, which defines a correlation between a room air parameter, an environmental air parameter, as well as a fan operating parameter for fan. By means of measurement of a room air measurement value for the room air parameter and a measurement of an environmental air measurement value for the environmental air parameter, a suitable fan operating parameter for control of fan can be selected and adjusted based on control model. Thereby the fan operating parameter is selected so that the required electrical energy for operating the fan is minimum.
A regulation system has a multi-motor converter (PWR) for the controlled parallel operation of a number of n EC motors (M1, . . . , Mn), the respective rotor position of which is detected without the use of sensors and is controlled by the common converter.
H02P 5/50 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing electrical values representing the speeds
The present disclosure refers to a stator arrangement as well as a method for the manufacturing thereof. The stator arrangement has a stator body having a stator core that is entirely or partly coated by an electrically insulating coating layer. A temperature-sensitive measurement conductor path is arranged in or on the coating layer and is integrally realized together with the coating layer. For this purpose, an MID manufacturing method can be used, for example. The at least one temperature-sensitive measurement conductor path has a temperature-dependent resistance. It is preferably arranged at a measurement position between a tooth of stator body and a stator winding wound onto the tooth.
Apparatus for ventilating and air-conditioning for use in commercial and industrial settings; electric motor-driven fans; ventilators for commercial and industrial use; hot air blowers, blowers for moving air and gas; replacement parts of the aforesaid goods, namely, guard grills, ventilator wheels, ventilator blades, fan wheels, fan blades, blower wheels, blower housings, inlet nozzles, outlet nozzles, diffuser housings; Accessories for refrigeration and HVAC heat-exchange units, namely, screens, filter frames, inlet nozzles, outlet nozzles, diffuser housings, and wall rings
16.
MULTI-MOTOR INVERTER FOR A PLURALITY OF MOTORS AND DETECTION METHODS FOR DETECTING SHIFTS IN THE SPEEDS OF THE MOTORS
The invention relates to a control system (1) comprising a multi-motor inverter (PWR) for the controlled parallel operation of a number of n EC motors (M1, . . . , Mn) whose respective rotor position is detected sensorlessly and controlled by the common inverter.
The invention relates to a fan wheel (1) with a plurality of fan wheel blades (10) and a fan wheel hub (20) that can be fixed to a motor (30) in order to drive the fan wheel (1) in rotation about a rotation axis (X) extending centrally through the fan wheel hub (20), wherein each of the fan wheel blades (10) can be screwed to the fan wheel hub (20) by means of at least one screw (41, 42) with a longitudinal screw axis (L) extending parallel to the rotation axis (X), the fan wheel hub (20) having a corresponding screw receptacle (21, 22) for each of the screws (41, 42) for screwing to the fan wheel blades (10).
Impeller 1 of a radial fan for conveying a gaseous fluid includes a bottom plate 2, and a cover plate 3. The cover plate 3 is spaced apart from the bottom plate 2 in the axial direction 15 of the impeller 1. The cover plate 3 and/or the bottom plate 2 have/has at least one impressed bead 5, and a plurality of blades 7. The at least one blade 7 is arranged between the cover plate 3 and the bottom plate 2 and is fastened in the region of and over the profile of at least one bead 5A surface profile of the bead 5 follows a surface profile of the blade 7 fastened to the bead 5, at least in an envelope, such that a conveying effect of the bead 5 corresponds at least to a conveying effect of a blade surface 8 which is reduced because of the bead 5.
The invention disclosure relates to a measuring assembly for measuring a parameter on an electrical device, in particular an electric motor. The electrical device is controlled by means of an inverter circuit. The measuring assembly has a measuring circuit which is electrically connected, by means of a measuring line, to a sensor unit having at least one sensor output of the inverter circuit. At least two different inverter output potentials can be applied to the control line depending on the switching state of the inverter output or of the inverter circuit. The measuring circuit is designed to transmit an output signal to the sensor unit and to detect and electrical measurement variable on the measuring line and/or the control line. On the basis of the received output signal, the sensor unit influences the electrical measurement variable depending on the parameter to be detected, for example the temperature. For example, for this purpose the sensors may have a parameter-dependent resistor.
A monitoring device and to a method for monitoring the quality of a gas atmosphere. The monitoring device has a ventilator which is designed to produce a gas stream having a variable volumetric flow. A gas sensor is arranged at a sensor position on a stationary part of the ventilator and provides a measurement value for a control device. The control device is designed to determine a corrected monitoring value of the volumetric flow based on the measurement value and provided correction data.
G01N 1/22 - Devices for withdrawing samples in the gaseous state
G01F 1/34 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electric pumps; power operated blowers; fans as parts of machines, namely, fans for machine engines; fans for motors and engines; compressors for machines, in particular screw, rotary, turbo, and gas compressors; compressors for machines, in particular radial compressors, centrifugal compressors, diagonal compressors, and axial compressors; electric compressors, in particular compressors for climate control devices, compressors for cooling systems, compressors for air conditioning units, compressors for dehumidification systems, compressors for climate control cabinets, compressors for ventilators, compressors for drinking water treatment, compressors for anode-cathode supply of fuel cells, and oil-free electric compressors; refrigerant compressors for recovering and recycling refrigerant gases, in particular refrigerant compressors for heating systems, refrigerant compressors for cooling systems, refrigerant compressors for ventilation systems, refrigerant compressors for air conditioning systems, and oil-free refrigerant compressors; machine parts, namely, electric motors and industrial engines for machines in connection with heating, cooling, and ventilation systems; suctioning devices, namely, suction pumps not for medical purposes Apparatus and instruments for power electronics in connection with heating, cooling, and ventilation systems, namely, climate control systems consisting of digital thermostats, air conditioning, heating, and ventilation control devices; apparatus and instruments for regulating the usage of electricity; electronic control system for the operation of machines Medical suctioning devices, namely, wound suction apparatus Installation, maintenance, and repair of electronic control equipment and electronic control systems in the field of ventilation technology, air conditioning technology, refrigeration technology, flow technology, engine technology, control technology, drive technology, medical technology, building technology, laboratory technology, household appliance technology, and gas technology; installation, maintenance, and repair of heating, ventilation, and air conditioning systems, compressors, air blowers, electric compressors, refrigerant compressors, and fuel cells Engineering services, particularly in the field of ventilation technology, air conditioning technology, refrigeration technology, flow technology, engine technology, control technology, drive technology, medical technology, building technology, laboratory technology, household appliance technology and gas technology; product development of fans, motors and engines; engineering research; engineering consulting; engineering work services, namely, engineering drawing and design services; engineering services, namely, technical project planning for engineering of ventilation technology; drive and ventilation technology consulting, namely, consulting in the field of the use of technology in the field of electric motors, fans, ventilators, electric compressors, refrigerant compressors, and blowers; technical development of products for third parties for drive, ventilation, and air conditioning technology
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Pumps [machines]; Blowing machines; Fans being parts of machines; Fans for motors and engines; Densifiers, in particular Screw compressors, Rotary compressors, Turbo compressors and Compressors for gases; Compressors, in particular Radial compressors, Centrifugal compressors, Diagonal compressors, Axial flow compressors; Electric compressors, in particular Compressors for air conditioning apparatus, Compressors for refrigerators, Compressors for air conditioning equipment, compressors for dehumidifiers, Compressors for air handlers, Compressors for drinking water treatment, compressors for anode-cathode supply of fuel cells, oil-free electric compressors; Refrigerant compressors, in particular Refrigerant compressors for heating installations, Refrigerant compressors for cooling installations, Coolant compressors for ventilating installations, coolant compressors for air-conditioning installations, oil-free coolant compressors; Parts of machines for operating motors and engines in connection with heating, refrigerating and ventilating installations, In particular valves, Pumps [machines], Condensors, Pressure regulators; Extracting machines, other than for medical purposes. Apparatus and instruments in connection with heating, refrigerating and ventilating installations, namely Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity in relation to the following goods: Heating, refrigerating and ventilating installations, more specifically Smart cards [integrated circuit cards], Commutators, Relays, Transformers [electricity], Rectifiers, Inverters [electricity], Batteries, Condensers [capacitors], Sensors; Electric or electronic controllers and regulators for operating machines and motors and engines in relation to the following goods: Heating, refrigerating and ventilating installations; Apparatus and instruments for regulating the use of electricity. Electric compressors, namely compressors for respiratory apparatus; Medical suction machines. Installation, maintenance and repair of equipment and installations in the field of air technology, air conditioning technology, cooling technology, flow technology, engine technology, control technology, drive technology, medical technology, building technology, laboratory technology, household technology and gas technology; installation, Maintenance and Repair in relation to the following goods: Of HVAC (heating, ventilating and air conditioning) units, Compressors, Air blowers, Electric compressors, refrigerant compressors and Fuel cells. Engineering services, in particular in the field of air technology, air conditioning technology, cooling technology, flow technology, engine technology, control technology, drive technology, medical technology, building technology, laboratory technology, household technology and gas technology; Development and construction of fans, motors and engines, Engineering research; Engineering consultancy services; Engineering services; Technical project planning in the field of engineering; Consultancy relating to drive and ventilation technology, in particular relating to the use and installation of electric motors, fans, ventilators, electric compressors, coolant compressors and blowing machines; Technical product development, for others, for drive, ventilation and air conditioning technology.
Device for detecting fault states in an electric machine comprising a rotor and a stator arranged so as to be electrically isolated from the rotor, comprising a connection electronics system for connecting the electric machine, wherein either the stator is connected by means of an electrical connection to a first electrical potential of the connection electronics system, said first electrical potential being stable with respect to the ground potential, or the stator is directly connected to a second electrical potential, which is stable with respect to the ground potential, and the second electrical potential is connected to the connection electronics system by means of the electrical connection, wherein a first sensor for measuring a first phase current and a second sensor for measuring a second phase current and a third sensor for measuring an electrical signal of the stator is formed via and/or at the electrical connection.
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 11/00 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
H02K 11/27 - Devices for sensing current, or actuated thereby
A building control system for at least one building. The building control system has a system controller and at least one building operation device with a respective operation controller. Electrical supply power is fed from a supply grid to the at least one building operation device. The system controller is set up to temporarily adapt a setpoint value for each building operation parameter in order to adapt the electrical supply power to the state of the supply grid and to stabilize the supply grid. The direct specification of a temporarily modified setpoint value for a building operation parameter is a simple and efficient option of integrating the subordinate open-loop or closed-loop controllers of the building operation devices into the building control system. This measure also makes simple retrofitting possible.
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 3/28 - Arrangements for balancing the load in a network by storage of energy
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
A fan with a housing which defines an axial flow channel having a cross-section, wherein the flow channel has a first axial portion on the suction side and a second axial portion adjoining in the flow direction. The flow channel has a first cross-section in the first axial portion a transitioning cross-section through the second axial portion. The cross-section is arranged concentrically in an imaginary rectangular base area, the side edges of which coincide at least in sections with a contour of the first cross-section, and wherein the flow channel has in its second axial portion an intermediate cross-section which widens in the flow direction within the base area and which, starting from the first cross-section, increases to a second cross-section at the pressure-side end of the second axial portion.
The invention relates to a diagonal impeller (1) having a conical hub (10) which expands from an inflow side (A) to an outflow side (B) in the radial direction (R), wherein a plurality of vanes (20) extend radially outwardly from the hub (10), wherein each vane pair (23) consisting of two directly adjacent vanes (21, 22) of the plurality of vanes (20) defines, between said pair, a vane channel (2) which is able to be flowed through from the inflow side (A) to the outflow side (B), wherein the vane channel (2) is delimited radially inwardly by a surface of the hub (10) extending between the two vanes (21, 22), wherein the surface of the hub (10) delimiting the vane channel (2) has, in the flow direction, a first portion (11) and a subsequent second portion (12), wherein the surface in the first portion (11) is curved and the surface in the second portion (12) is flat.
A rotor (10) with a rotor pot (1), a hub (2) and a shaft (3) are provided,
wherein the rotor pot (1), the hub (2) and the shaft (3) are rotatable about an axis of rotation (A) of the rotor (10).
A rotor (10) with a rotor pot (1), a hub (2) and a shaft (3) are provided,
wherein the rotor pot (1), the hub (2) and the shaft (3) are rotatable about an axis of rotation (A) of the rotor (10).
The shaft (3) is accommodated in a hub bushing (21) of the hub (2) to form a shaft-hub connection.
A rotor (10) with a rotor pot (1), a hub (2) and a shaft (3) are provided,
wherein the rotor pot (1), the hub (2) and the shaft (3) are rotatable about an axis of rotation (A) of the rotor (10).
The shaft (3) is accommodated in a hub bushing (21) of the hub (2) to form a shaft-hub connection.
The rotor pot (1) has a receptacle (11) for the hub (2) and the hub (2) is secured to the rotor pot (1) at least in the region of the receptacle (11).
A rotor (10) with a rotor pot (1), a hub (2) and a shaft (3) are provided,
wherein the rotor pot (1), the hub (2) and the shaft (3) are rotatable about an axis of rotation (A) of the rotor (10).
The shaft (3) is accommodated in a hub bushing (21) of the hub (2) to form a shaft-hub connection.
The rotor pot (1) has a receptacle (11) for the hub (2) and the hub (2) is secured to the rotor pot (1) at least in the region of the receptacle (11).
An edge portion (111) of the receptacle (11) of the rotor pot (1) extends at least partially parallel to the axis of rotation (A).
A rotor (10) with a rotor pot (1), a hub (2) and a shaft (3) are provided,
wherein the rotor pot (1), the hub (2) and the shaft (3) are rotatable about an axis of rotation (A) of the rotor (10).
The shaft (3) is accommodated in a hub bushing (21) of the hub (2) to form a shaft-hub connection.
The rotor pot (1) has a receptacle (11) for the hub (2) and the hub (2) is secured to the rotor pot (1) at least in the region of the receptacle (11).
An edge portion (111) of the receptacle (11) of the rotor pot (1) extends at least partially parallel to the axis of rotation (A).
A method is also provided for producing the rotor (10).
The invention relates to a cooling device (1) which comprises at least one central electronics unit (2), which comprises at least two active units (3-8) arranged at a distance from the central electronics unit (2) and which comprises at least one DC voltage link (9), wherein each DC voltage link (9) is fed by at least one of the at least one central electronics unit (2), wherein the central electronics unit (2) for feeding each DC voltage link (9) comprises at least one converter (16a, 16b) and wherein at least one of the active units (3-8) is designed as a fan unit (10-12) which comprises an electric motor (10a-12a) and a fan impeller (10b-12b), wherein each electric motor (10a-12a) is connected to one of the DC voltage links (9), wherein each electric motor (10a-12a) comprises a commutation electronics system (10c-12c) and an EMC filter (10d-12d), wherein the commutation electronics system (10c-12c) is either integrated into the electric motor (10a-12a) or arranged directly on the electric motor (10a-12a) and wherein the EMC filter (10d-12d) is arranged between the commutation electronics system (10c-12c) and the DC voltage link (9), wherein the central electronics unit (2) comprises a control device (19).
A centrifugal fan (1) has a fan unit (10) with an impeller (11), a motor (12) for driving the impeller (11), and a support structure (13) for securing the fan unit (10) in the intended detachable manner to a flange plate with an intake opening (21, 22). The support structure (13) is designed to hold the fan unit (10) on the flange plate (21, 22) by itself. A plurality of air guide segments (23), that together form a downstream guide device (20), are secured to the support structure (13) and/or to the flange plate (21, 22).
The invention relates to a method for evaluating a ventilator oscillation (OV) and a plant oscillation (OA) on a flow system (10) having a ventilator (11) and a control plant (12) connected to the ventilator (11). The plant oscillation (OA) is recorded independently of the ventilator oscillation (OV), more particularly by means of a mobile terminal (17). The ventilator oscillation (OV) is preferably sensed by means of an oscillation sensor (16) of the ventilator (11). The ventilator oscillation (OV) is evaluated together with the plant oscillation (OA) in order to determine whether there is a relationship between the ventilator oscillation (OV) and the plant oscillation (OA) and oscillations with a high amplitude of the plant oscillation (OA) can be attributed to high amplitudes of the ventilator oscillation (OV) or possibly have another cause. As a result of the evaluation of the plant oscillation (OA) based on the ventilator oscillation (OV), additional information is therefore available that simplifies the initiation of a suitable measure.
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G01H 1/00 - Measuring vibrations in solids by using direct conduction to the detector
F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
F24F 13/24 - Means for preventing or suppressing noise
F24F 11/49 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
H02P 23/04 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the likeBalancing
A fan blade (1) has a front inflow edge (2) and a rear outflow edge (3). The fan blade (1) also has an at least partially wavy inflow edge (4), that forms a wave (W) having a specific three-dimensional waveform.
An apparatus for fixing a printed circuit board within a housing of an electric motor, comprising a first housing part, a second housing part, and an insulation part. The insulation part is arranged between the first housing part and the second housing part, such that the housing parts are spaced apart from one another at least in certain portions by the insulation part, including a hard component part and a soft component part. The insulation part comprises at least one spring element for exerting a pressing force on the first housing part. The hard component part comprises at least one hold-down means, having at least one pressure-exerting element. The soft component part is configured to provide a seal between the housing parts. The spring element is arranged on that side of the insulation part which lies opposite to a stop region in the direction of the holding force.
A stator for an electric motor having stator teeth arranged about an axis of rotation, which are each wound with a winding, and at least one heat-conductive contact element, wherein the at least one contact element extends in the axial direction from a region adjoining the windings in the axial direction in each case between two windings and is formed to be deformable and/or deflectable in the circumferential direction for direct contact with at least one of the windings. The windings are overmolded or remolded with an electrically non-conductive material forming an encapsulation, which material forms with the at least one contact element in each case a pocket for receiving a temperature monitoring element which can be inserted in the axial direction, the winding-side wall of which is formed at least in a section by the contact element directly abutting the winding.
A switching disk for contacting windings of a stator of an electric motor, which windings are arranged around an axis of rotation, with a printed circuit board of the electric motor, wherein the switching disk has an annular support structure circumferentially extending around the axis of rotation and multiple contact arrangements for contacting the windings with the printed circuit board, which are held by the support structure. The contact arrangements are each formed by a winding contact for contacting one of the windings, a printed circuit board contact offset therefrom in the radial direction for contacting the printed circuit board, and a coupling element extending in the radial direction and electrically connecting the winding contact to the printed circuit board contact.
The invention relates to a cooling wheel (1) for actively cooling a stator (2) of an electric motor (3). The cooling wheel (1) can be fixed, for conjoint rotation, on a rotor (4) of the electric motor (3) such that the cooling wheel is adjacent to the stator (2), said rotor being rotatable about an axis of rotation (A). The cooling wheel has a bottom disc (10), which extends orthogonally to the axis of rotation (A) and comprises an annular radially inner portion (12) and a radially outer portion which annularly extends around said radially inner portion. The cooling wheel (1) has, adjacent to the radially outer portion of the bottom disc (10) in the axial direction, a cover disc (30), which annularly extends around the axis of rotation (A), and a plurality of blades (20), which extend from the bottom disc (10) to the cover disc (30) and radially outward. Between each pair of immediately adjacent blades (20), a flow channel is formed which is delimited by the two blades (20), by a portion (11) of the bottom disc (10) lying between the two blades, and by a portion (31) of the cover disc (30) lying between the two blades (20). Each portion (31) of the cover disc (30) is arcuate in the circumferential direction (U), and the cover disc (30) has an undulating profile on its outer circumference (32).
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
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
F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the likeBalancing
F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
37.
DOWNSTREAM GUIDE DEVICE AND FAN WITH DOWNSTREAM GUIDE DEVICE
The disclosure relates to a fan and a downstream guide device for a fan, the downstream guide device having a plurality of spoilers arranged in a star shape at a central position, each with a leading edge and a trailing edge, the spoiler having a jagged or wavy leading edge with a periodically repeating waveform at least in a portion.
A method for producing a winding of a coil around a component, of an electric motor, wherein in order to produce the winding, at least one wire is guided over at least one arm encircling the component in a rotational movement in such a way that the wire is wound around the component in successive turns, wherein at least one image acquisition device and/or at least one computer unit provides information about the course of turns that have already been wound, wherein the arm is dynamically controlled in a type of movement different from the encircling rotational movement, in such a way that the turn currently being applied by the movement follows a determined turn course that is optimized with respect to previously applied adjacent turns.
H02K 15/08 - Forming windings by laying conductors into or around core parts
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
The invention relates to a radial or diagonal impeller (1) with impeller blades (2) curved about an axis of rotation in the circumferential direction and formed from a sheet of metal, wherein the impeller blades (2) each have a first surface (11), which defines a suction side of the respective impeller blade (2) at least in sections, and a second surface (12), which defines a pressure side of the respective impeller blade (2) at least in sections, as well as two blade edges (21, 22), of which a first blade edge (21) is a blade leading edge and a second blade edge (22) is a blade trailing edge, wherein at least one of the blade edges (21, 22) of at least one of the impeller blades (2) has a geometric edge modification, limited via a predetermined length in the longitudinal direction (L) of the blade edge (21, 22), in the form of a rounding (3) which is formed by bending deformation of the metal sheet and/or by an inflow body (4) arranged on the blade edge (21, 22) and at least partially covering the same.
The invention relates to a sensor holder (1) for pressing a temperature sensor (7) onto a winding (2) of an electric motor, wherein the sensor holder (1) has a connecting section (10) for attaching the sensor holder (1) in a floating or fixed manner to a component of the electric motor, and also a holding section (20), said sections being connected to one another exclusively by a first spring (31), wherein the holding section (20) has a reception space (23) for receiving the temperature sensor (7), which reception space adjoins the winding (2) on a first side (21), wherein a second spring (32) is provided on the holding section (20) on a second side (22) that is opposite the first side (21) and remote from the winding (2), which second spring is designed to press the holding section (20) and/or the temperature sensor (7) received in the reception space (23) against the winding (2).
Device for interchanging information in the style of an interface of a system (1), comprising either an adaptive component (6) or an adaptive component (6) and a static component (7), wherein, if the device comprises only the adaptive component (6), the adaptive component (6) identifies the type of customer interface on the basis of signal types and data provided on the receiving line (3) via the customer interface and/or on the basis of characteristic properties that can be read on the energy transmission channel (5) and applies signals of the expected type and the corresponding data to the transmitting line (4) and, if the device comprises the adaptive component (6) and the static component (7), the adaptive component (6) identifies the type of static component (7) on the basis of signal types and data provided on the receiving line (3) via the static component (7) and/or on the basis of characteristic properties that can be read on the energy transmission channel (5) and applies signals of the expected type and the corresponding data to the transmitting line (4).
G06F 3/00 - Input arrangements for transferring data to be processed into a form capable of being handled by the computerOutput arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
G06F 13/00 - Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
The invention relates to an electric machine (10), to the operation thereof and to a method for producing a microstructured surface (28) on a stator (12) and/or a rotor (11) of the electric machine (10). A microstructure is introduced into a boundary surface (22) adjoining an air gap (13) of the electric machine (10), in particular by way of a material-removing process and/or a forming process. As an alternative, the microstructure may also be created through a primary forming process. The microstructure present in the boundary surface (22) forms a microstructured surface (28) so as to generate air turbulence in the air gap (13).
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 1/12 - Stationary parts of the magnetic circuit
H02K 1/22 - Rotating parts of the magnetic circuit
H02K 9/04 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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
A duct fan (1) has a centrifugal fan with a motor (10) and a centrifugal impeller (11). A housing has an intake shell (2) on an intake side, that defines an intake portion (52), and accommodates the centrifugal impeller (11). The housing also has an exhaust shell (3) on an exhaust side that defines an exhaust portion (53). A bowl-shaped motor mount (5) is arranged in the exhaust shell (3). A continuous flow channel (20) to the exhaust portion (53) is formed between the motor mount (5) and the exhaust shell (3). A flow (S) generated by the centrifugal impeller (11), during operation, is guided by the flow channel (20).
A method and a ventilator system designed to carry out the method. The method is used to ascertain a current operating point of a ventilator unit having a ventilator and at least one filter. By determining the current operating point, a conclusion can also be drawn regarding the degree of clogging of the filter. It can also be identified whether the filter is present or not. At multiple points in time, a power value for the electrical power of the ventilator can be ascertained. In accordance with the current speed of the ventilator, a power characteristic curve can be selected from a characteristic map or calculated on the basis of a reference characteristic curve which describes the relationship between the electrical power of the ventilator and the pressure differential of the ventilation unit. The power characteristic curve therefore does not only relate to the ventilator but rather to the entire ventilator unit. This allows clear and sufficiently precise determination of the current operating point A of the ventilator unit.
A circuit board arrangement (100) for a motor controller in a motor housing (50) has at least one first populated circuit board (LP1) and one second populated circuit board (LP2). Contact elements (20) are plugged together in the plug-in direction(S) in order to produce a detachable electrical connection with the first circuit board (LP1). An alignment and guidance device (LP3) protrudes from the first circuit board (LP1) in the plug-in direction(S) toward the second circuit board (LP2). In the assembled state, the contact elements (20) are completely in the plugged-in state with mating contacts (10) of the first circuit board (LP1). An end-side portion (30), of the device (LP3), protrudes through a gap (21) in the second circuit board. The contact elements (20) protrude from or out of the second circuit board (20) in different lengths.
The disclosure relates to a condensate draining device for discharging condensate from at least one cooled component, which is in particular a cooled electronic system and has a surface on which condensate formation can occur, wherein the condensate draining device has a heat conducting element which has a condensation surface and which is designed to at least partially cover the surface of the at least one component and to transfer a cold causing condensation on the surface of the at least one component to the condensation surface, further having a housing with at least one condensate drain and/or a condensate chamber for collecting a condensate forming on the condensation surface, wherein the at least one condensate drain determines in each case at least one predetermined flow path which is fluidically separated from the at least one component for draining off the condensate from the housing.
The invention relates to a communications system (10) and to a method for communication between a plurality of subscribers (12) of the communications system (10). The communications system (10) may also be called DAGNA (Digital Arrangement for Global Network Access) for short. Each subscriber (12) has an AI unit (20) and is designed to receive input data sets (E) and transmit output data sets (A). The input data sets (E) and/or the output data sets (A) transmitted or to be transmitted are used to identify matching data set parts (D) in the input data sets (E) and/or output data sets (A). If such matching data set parts (D) have been identified, they are not transmitted when output data sets (A) are transmitted. The transmitted output data set (A) contains only the remaining part of necessary and variable data without the matching data set parts (D). For example, the matching data set parts (D) can, before transmission, be removed from an output data set (A) intended for transmission.
The invention relates to a measuring assembly (21) having a measuring circuit (22), which is arranged on or in an electrical machine (10), and an evaluation unit (24), which is arranged outside the electrical machine (10) and is connected to one of the phases (11) of the electrical machine (10). The electrical connections of the phase (11) that are present anyway are used for this. The measuring circuit (22) has a sensor (25), which can change its sensor value continuously or in stages as a function of a parameter (P) to be measured. The sensor (25) is coupled to a coupling branch (23) of the measuring circuit (22), which coupling branch is in turn coupled to one of the windings (16) of the phase (11). The measuring circuit (22) is configured to influence a coupling branch impedance (ZK) of the coupling branch (23) as a function of the sensor value and therefore of the parameter (P), as a result of which the total impedance (ZG) of the phase (11) changes. The influence of the total impedance (ZG) can be detected by the evaluation unit (24). In this way, a signal describing the parameter (P) can be transmitted to the evaluation unit (24) via the electrical connections of the phase (11).
An electric motor has a rotor and a stator (1) with a first winding space (11) to receive a multiplicity of coil windings (12) wound from a winding wire. A second winding space (20), connected to the respective first winding space (11), is provided as a winding space extension of the first winding space (11) in order to receive at least one wire portion (21) of the winding wire. Two receiving pockets (24, 25), situated opposite one another in the circumferential direction (U), are formed in the at least one second winding space (20) in order to respectively receive the at least one wire portion (21) of the winding wire.
A fan blade (1) has a front leading edge (2) and a rear trailing edge (3). The fan blade (1) has a leading edge (4), at least some portions, that are undulated. The edge forms a wave (W) with a specific three-dimensional waveform.
A fan blade (1) has a front inflow edge (2) and a rear outflow edge (3). The fan blade (1) has an at least partially wavy inflow edge (4) that forms a wave (W) having a specific three-dimensional waveform.
The invention relates to a measuring assembly for measuring a parameter on an electrical device (11), in particular an electric motor (12). The electrical device (11) is controlled by means of an inverter circuit (10). The measuring assembly (20) has a measuring circuit (22) which is electrically connected, by means of a measuring line (25), to a sensor unit (21) having at least one sensor (23, 24). The measuring circuit (22) is also connected to a control line (13) which connects the electrical device (11) to an inverter output (14) of the inverter circuit (10). At least two different inverter output potentials can be applied to the control line (13) depending on the switching state of the inverter output (14) or of the inverter circuit (10). The measuring circuit (22) is designed to transmit an output signal (A) to the sensor unit (21) and to detect an electrical measurement variable (M) on the measuring line (25) and/or the control line (13). On the basis of the received output signal (A), the sensor unit (21) influences the electrical measurement variable (M) depending on the parameter to be detected, for example the temperature. For example, for this purpose the sensors (23, 24, 41) may have a parameter-dependent resistor.
An electric motor (1), in particular, an external rotor motor, has a stator (10) with a stator core (11), a non-rotatably attached shaft (20), that extends in the axial direction (A) of the motor, and a rotor bell (30), rotatably arranged relative to the non-rotatable shaft (20). The rotor bell (30) has cooling ribs in an open, spoke-like design rotatably mounted on the shaft (20) by at least one first stator-side bearing shield (31). A cooling device (40) is arranged between and connects the shaft (20) and the stator core (11). The cooling device (40) has a plurality of axial flow openings (41) arranged in the circumferential direction that causes cooling when the motor rotates during operation.
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
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
55.
External Rotor Motor With A Cooling Wheel For Cooling The Stator
An external rotor motor (1) has a stator (10), a rotor (20) and a cooling wheel (30) that rotates with the rotor (20) and the stator (10) to cool the stator (10). The stator (10) has an inner portion (11), enabling fluid flow, and a surrounding outer portion (12) enabling fluid flow. The flow is fluidically separate from the inner portion (11) in the radial direction (X ). The cooling wheel (30) has a plurality of blades (33) to generate an overpressure and a negative pressure. The cooling wheel (30) generates a directed air flow (L) flowing from the outer diameter (32) of the cooling wheel (30) through the outer portion (12) and the inner portion (11) to the inner diameter (31) of the cooling wheel (30).
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 5/15 - Mounting arrangements for bearing-shields or end plates
A stator for an electric motor, wherein the stator has a laminated stator core which is formed from a multitude of individual teeth that can be arranged in a ring around an axis of rotation of the electric motor and interconnected in the circumferential direction, wherein each individual tooth of the plurality of individual teeth is flanked on both sides along the circumferential direction by a further individual tooth from among the plurality of individual teeth and has a connection portion for mechanically fixing the individual tooth to the individual teeth by which it is flanked, and wherein at least some of the individual teeth each have a pressing portion for elastic and/or plastic deformation and establishment of a press-fit connection between the laminated stator core and a radially inner axle, so that, upon joining of the stator to the axle, the stator can be fixed to the axle through the deformation of the pressing portions and a force acting on the axle as a result of the deformation between laminated stator core and axle.
A centrifugal or diagonal impeller has impeller blades (4) that are curved in the circumferential direction about an axis of rotation and are formed from a single-layer sheet metal. Each blade (4) has a suction side (11) and a pressure side (12) as well as a blade leading edge (5) and a blade trailing edge (6). At least the blade leading edge (5) of the impeller blades (4) adjacent to their suction side (11) have a geometric edge modification in the form of a rounding (7) over a predetermined partial length of a blade thickness (SD) of the impeller blades (4).
A modular control unit (100) is adaptable, in terms of interface functions, for an electric motor selected from a predetermined number i of electric motors, in particular electric motors of the same power class. The control unit (100) has at least two printed circuit boards (L1, L2), selected from a set of N different printed circuit boards (L1, L2, . . . , LN). Interface functions, electrical components, electronic components or control units for the operation of the electric motor are located on the printed circuit boards.
An electric motor with a stator and an axle (20). The stator has a laminated stator core (10) formed from a multitude of individual teeth (11). At least some of the individual teeth (11) each have a radially inner pressing portion (13) for elastic and/or plastic deformation and establishment of a press-fit connection between the laminated stator core (10) and the axle (20). The stator is fixed to the axle (20) through the deformation of the pressing portions (13) and a force acting on the axle (20). At least one securing element (30) is on at least some of the pressing portions (13) to transmit a torque between the axle (20) and the laminated stator core (10) and fix the position of the laminated stator core (10) relative to the axle (20) in the circumferential direction (U).
An electronics unit and a plug-in junction box for plug-in connection of a plug-in connector integrated therein in the plug-in direction (S) into a plug-compatible socket of an electronics housing of an electronics unit of an electric motor. The junction box has a housing with a pot-like accommodation region delimited by housing walls for accommodating a contact carrier of the plug-in connector. A plurality of hollow-cylindrical screw bushings extending in the plug-in direction (S) are provided in the accommodation region. At a plurality of positions corresponding to those positions of the screw bushings, the contact carrier has externally located guide elements at which the contact carrier can be guided into its final assembly position, and in the final assembly position, the respective guide elements at least partially engage around the cylindrical screw bushings.
The invention relates to a fastening apparatus (1) for fastening a ventilator (2) to a carrier structure, having—at least two support elements (3a, 3b), each being connectable at the first end (4) thereof to the carrier structure, wherein at least two of the support elements (3a, 3b) have a fastening means (5) for fastening a ventilator (2), wherein—the support elements (3a, 3b) are connected at the second end (7) thereof to the adjacent support element (3a, 3b), such that the support elements (3a, 3b) mutually support each other, wherein—the fastening means (5) is spaced apart from a connection point (17), at which the second end (7) is connected to the adjacent support element (3a, 3b).
A cooling device with a heat exchanger through which air flows and at least one fan arranged on the heat exchanger, forming a radial gap for generating airflow through the heat exchanger. The heat exchanger having a front face through which air flows which points toward the fan and is covered in portions by the fan, so that the front face is divided into a first subface that is at least partially covered by the fan and a second subface that is free of the fan. The cooling device has a guide sleeve arranged between the heat exchanger and the fan so as to close the radial gap at least in portions, forms a flow channel leading from an air outlet of the fan to the first subface of the front face, fluidically connects the air outlet to the first subface, and fluidically separates the same from the second subface.
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid
F28F 13/06 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
F28F 9/00 - CasingsHeader boxesAuxiliary supports for elementsAuxiliary members within casings
A fan blade (1) has a front inflow edge (2) and a rear outflow edge (3). The fan blade (1) has an at least partially wavy inflow edge (4). The wavy inflow edge (4) forms a wave (W) with a specific three-dimensional waveform.
The invention relates to a monitoring device (10) and to a method for monitoring the quality of a gas atmosphere (A). The monitoring device (10) has a ventilator (13) which is designed to produce a gas stream (G) having a variable volumetric flow (V). A gas sensor (11) is arranged at a sensor position (P) on a stationary part of the ventilator (13) and provides a measurement value (Q) for a control device (12). The control device (12) is designed to determine a corrected monitoring value (M) of the volumetric flow based on the measurement value (Q) and provided correction data (C).
A system for cooling a chamber (11) and a method for operating this system (10). The system (10) comprises a cooling unit (12) and an axial fan (13) in the chamber (11) to be cooled. The axial fan (13) is configured to produce a gas flow (G), more particularly an airflow, through the cooling unit (12), as a result of which heat from the gas flow is transferred to a coolant (M) flowing through the cooling unit (12). A defrosting condition is checked in a control apparatus on the basis of a relationship between at least one operating parameter (P) and blocking (E) in a gas flow path (14). If a defrosting condition is satisfied, a defrosting signal (A) is produced.
A system for cooling a chamber (11) and a method for operating this system (10). The system (10) comprises a refrigeration unit (12) and an axial fan (13) in the chamber (11) to be cooled. The axial fan (13) is configured to generate a gas flow (G), in particular an air flow, through the refrigeration unit (12), whereby heat is transferred from the gas flow to a cooling medium (M) flowing through the refrigeration unit (12). An artificial neural network (22) is trained to characterize a relationship between at least one operating parameter (P) and a blockage (E) in a gas flow path (14). On the basis of the present value of the at least one operating parameter (P), the artificial neural network (22) recognizes whether a defrosting state has been reached. If this is the case, a defrosting signal (A) is generated.
F25D 21/02 - Detecting the presence of frost or condensate
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
F24F 11/62 - Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
The invention relates to a device and a method for monitoring a DC link capacitor (CZK) in an electrical DC link of a circuit (1) operated on a mains voltage Vac, the circuit comprising a power factor correction filter (PFC) and an inverter (20), the DC link capacitor (CZK) to be monitored being between the power factor correction filter (PFC) and the inverter (20). During the operation of the circuit (1), the DC link capacitance C of the DC link capacitor (CZK) is determined at least at certain time intervals over the operating time by measuring a power ripple W of a DC link voltage VZK, which DC link voltage arises at the DC link capacitor (CZK), said power ripple pulsing at twice the frequency of the mains voltage, and the remaining service life or the service life end and/or usability end of the DC link capacitor (CZK) is determined, by means of an evaluation circuit (30), from the DC link capacitance C determined in this way.
Stator, in particular a stator manufactured from punch bundled dynamo sheets, for an external rotor and/or an internal rotor motor of an electric machine, comprising a stator yoke, a plurality of stator teeth, as well as in each case one stator groove lying between two stator teeth, wherein at least one heat conducting pipe for cooling the stator is in each case incorporated in the stator groove.
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
H02K 9/20 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
74.
Efficient DC link processing within a PFC circuit arrangement
A circuit arrangement configured to execute DC link processing with simultaneous reduction of the harmonic components in the input current, i.e., for usability or applicability in different power supply networks, particularly both in single-phase and three-phase networks with the same circuit topology or in the event of the failure of a phase.
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/10 - Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC
H02M 1/32 - Means for protecting converters other than by automatic disconnection
75.
Modular segmented stator package with coupling web with free-fitting pin
a) of an adjacent individual tooth (12) can be connected to its connecting portion (17), such that a nonpositive connection is produced which ensures a magnetic flux.
H02K 11/25 - Devices for sensing temperature, or actuated thereby
H02K 11/21 - Devices for sensing speed or position, or actuated thereby
H02K 11/27 - Devices for sensing current, or actuated thereby
H02P 29/60 - Controlling or determining the temperature of the motor or of the drive
77.
ELECTRIC MOTOR, ELECTRONICS MODULE FOR AN ELECTRIC MOTOR, METHOD FOR SETTING A REFERENCE VOLTAGE, AND METHOD FOR PRODUCING A PLURALITY OF ELECTRIC MOTORS
The invention relates to an electric motor (1), which comprises a stator (2), a rotor (3) and an electronics module (4, 4a), wherein: the electronics module (4, 4a) comprises a current-limiting circuit (5), a shunt (6) and an output stage (7) with drivers (8, 9, 10); the current-limiting circuit (5) comprises an adjustable resistor (11, 11a) and a comparator (12); the adjustable resistor (11, 11a) is set to a resistance value (R11) adapted to the electric motor (1); a reference voltage (RFV) set to a defined reference value (RFW) by means of the adjustable resistor (11, 11a) is applied to a first input (12a) of the comparator (12), and a shunt voltage (SHV) falling across the shunt (6) as a result of the winding currents of the electric motor (1) is applied to a second input (12b) of the comparator (12); the drivers (8, 9, 10) of the output stage (7) are kept active via an output (12c) of the comparator (12) until the shunt voltage (SHV) exceeds the reference voltage (RFV).
An electrical machine including a stator, a rotor and a bearing arrangement having a first bearing and a second bearing on opposite sides of the stator as well as a shielding arrangement comprising a first shielding unit and a second shielding unit. The rotor is rotatably supported around a rotation axis by means of bearings. The shielding units are electrically conductive and comprise a ring part in each case that extends originating from a radial inner end to a radial outer end away from the rotation axis. Preferably each shielding unit has a circumferential part on its radial outer end that extends in a continuous ring-shaped manner around rotation axis and is arranged in overlapping manner with the adjacent axial end of stator winding in axial direction. The circumferential parts are preferably completely closed, whereas the ring parts can comprise through holes.
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 11/01 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields
H02K 11/40 - Structural association with grounding devices
79.
Stator for a permanent-excited electric motor/induction machine
A permanent-excited electric motor/induction machine has a laminated core (1) made of stator laminations (11) and a yoke winding (2). The yoke winding (2) has an inner winding part (21) and an outer winding port 22. The inner winding part 21 is arranged radially inside the stator lamination (11) in at least one winding receptacle (3). The outer winding part (22) is arranged radially outside the stator lamination (11) on an outer surface (4) of the laminated core (1). A soft-magnetic shield (5) is formed on the entire circumference around the outer winding part (22). At least one nonmagnetic connecting element (6), that contacts the stator lamination (11) and the soft-magnetic shield ring (5), is arranged between the stator lamination (11) and the soft-magnetic shield (5).
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
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
A system (1) has a control device (10) with central electronics (11) designed for connection and operation of differently coded electric motors (En), with different motor characteristics (Mn) and/or power classes (Ln), to a device connection (12) of the control device (10). The at least one electric motor (En) is selectable from a number (n) of electric motor (En), that can be connected as intended, has a coding element (Kn). The central electronics (11) have a coding capture device (2) to recognize, via coding element (n), the motor characteristics (Mn) and/or the power class (Ln) of the respective currently connected electric motor (En).
out, within defined voltage limits, has a non-inverting adder (10) with a positive input (11). A voltage divider (20), with at least a first stage (21) and a second stage (22), is connected to the positive input (11) of the adder (10). At least one stage has a parallel circuit of n resistors (R1, R2, . . . , Rn) that are each connected in series in a conduction path (L1, L2, . . . , Ln) to an overcurrent protection device (F1, F2, . . . , Fn). At least one device (30) actively changes one or more of the overcurrent protection devices (F1, F2, . . . , Fn) into a state that interrupts the respective affected conduction path (L1, L2, . . . , Ln).
A method for ascertaining volume flow or pressure for controlling a ventilator, operated by an EC motor, of a specific ventilation device to a specific operating point in order to achieve and maintain a specified nominal volume flow strength or nominal pressure of the ventilation device without use of a pressure or volume flow sensor. The volume flow is ascertained by an artificial neuronal network on the basis of a sequential learning method with a number of learning steps. A linking of n artificial neurons in one or more layers is provided. At least one entry layer Pi is provided in order to process a number of I input parameters, that have a direct or indirect influence on the volume flow in the ventilation device.
F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
A single-strand EC motor with a winding strand with two winding connections, has a current regulating device in the winding strands between the winding connections. The current regulating device regulates the winding current of the single-strand EC motor during a first commutation phase with a positive current flow and a second commutation phase with a negative current flow. In each case, at a constant value. The value of the average output voltage uw(t) of the current regulator is used to ascertain the commutation time.
H02P 1/46 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor
H02P 3/18 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor positionElectronic commutators therefor
Method for producing a winding of a coil around a component, for example a stator tooth or rotor tooth (4) of an electric motor, wherein, for the purpose of producing the winding, at least one wire is guided over at least one arm encircling the component with a rotational movement in such a way that the wire is wound around the component in successive turns, wherein at least one image capturing device and/or at least one computer unit provides information about the course of turns (3) that have already been wound, wherein the arm is dynamically controlled with a manner of movement different from the encircling rotational movement in such a way that the turn (1) currently being applied by the movement follows a determined course which is optimized with respect to previously applied adjacent turns.
The invention relates to a warning detector for warning of excessively high pollution of the air with particles and, in particular, viruses of a certain size, wherein the warning detector comprises a sensor unit designed to determine a concentration of vibration-fragmentable particles of a certain target diameter in the air by determination of a difference between a first light scatter at a first sample of the air and a second light scatter at a second sample of the air, wherein the particles in the first sample are uninfluenced and the particles in the second sample have been fragmented by a vibration, and wherein the warning detector comprises a reporting unit designed to report the concentration in the air with the particles when the concentration of a predetermined threshold has been reached.
A fan (1) has a rotor (10) and a fan impeller (20). The rotor (10) has a connecting portion (11) and the fan impeller (20) has a fastening portion (21). The impeller is centered relative to the rotor (10) with the fastening portion (21) on the connecting portion (11) by at least one centering element (40). The impeller is fixed to the rotor (10) by at least one fastening element (30). The fastening element (30) is a screw with a screw head (31), a threaded portion (33), and a shaft arranged between the threaded portion (33) and the screw head (31). A spacer sleeve (34) is arranged around the shaft. A thread (12) corresponding to the fastening element (30) is, respectively, formed in the connecting portion (11).
A method for manufacturing an impeller with a number of impeller blades and a cover disc covering the impeller blades. Plastic is injected into an injection mold using a cascade injection molding process to form the impeller. The injection mold has a number of shut-off nozzles to feed the plastic at various joint positions and different opening times. The number of shut-off nozzles is determined as a function of the number of impeller blades.
A diagonal fan has an electric motor, housing, and diagonal impeller, which is accommodated within the housing, can be driven via the electric motor, and generates a diagonal flow during operation that is deflected in an axial flow direction by an inner wall of the housing. Outlet guide vane device with a plurality of guide vanes distributed in the circumferential direction is arranged adjacently to the diagonal impeller when viewed in the axial flow direction, and homogenizes airflow generated by the diagonal impeller. Guide vanes have a radial extension from a hub region of the outlet guide vane device to the housing. An imaginary extension in the outflow angle of the diagonal impeller strikes the inner wall of the housing at an axial distance K from the diagonal impeller. Outlet guide vane device is arranged at axial distance H to diagonal impeller where 0.75≤K/H≤1.25.
A fan impeller system has a rotor element (10), a multiplicity of fan impeller blades (30) and a multiplicity of adapter elements (20). The rotor element (10) has a multiplicity of receptacles (11) that are evenly distributed in a circumferential direction (U) with an adapter element (20). The adapter element (20) is arranged between the respective fan impeller blade (30) and the respective receptacle (11). The adapter elements (20) may differ at least in their shape and/or dimensions. The fan impeller blades (30) may differ at least in their shape and/or dimensions.
A diagonal fan having an electric motor and a diagonal impeller which can be driven about an axis of rotation (RA) by means of the electric motor. The diagonal impeller determines an air inlet and an air outlet and has a hub and impeller vanes which are distributed in the circumferential direction, extend radially outwards from the hub and are surrounded radially externally by a slinger ring. A flow angle αD formed by the slinger ring relative to the axis of rotation (RA) increases from the air inlet to the air outlet, and a flow angle αN formed by the hub relative to the axis of rotation (RA) decreases from the air inlet to the air outlet.
The invention relates to a turbocompressor (1) comprising a compressor housing (2) and a compressor wheel (4) with blades (5). The compressor wheel (4) is rotatably mounted relative to the compressor housing (2) and is arranged such that the exposed upper edges of the blades (5) are spaced from a compressor housing (2) wall (3) facing the blade upper edges across a head gap (7), wherein both the upper edges of the blades (5) as well as the housing wall (3) have at least one recess (11, 13) and at least one elevation (10, 14) over the respective Meridian contour, said recess and elevation interacting locally such that the head gap (7) defines a Z-shaped course in the region of the recesses (11, 13) and the elevations (10, 14) when viewed on a Meridian plane.
The disclosure relates to a unit for a bus system, a master/slave bus system with such units, and a method for assigning individual unit addresses for units of a bus system, wherein through the use of an enable signal, which is relayed from unit to unit, only one unit is respectively in an allocation mode in which the unit that is respectively in the allocation mode is allocated an individual unit address so that the units of the bus system can each be allocated with the unique individual address one after the other in the sequence of their cabling.
(1) Electrical engines, other than for land vehicles; Electric motor-driven fans, ventilating fans and blowing machines, all for machines, engines or motors, included in class 7
The invention relates to a tubular fan (1), in particular in the form of a centrifugal fan, with a motor (10) and a radial impeller (11), comprising a housing having an intake-side intake dish (2) which defines an intake section (52) and receives the radial impeller (11), and a delivery-side delivery dish (3) which defines a delivery section (53), a dish-shaped motor mount (5) being arranged in the delivery dish (3), and a continuous flow channel (20) to the delivery section (53) being formed between the motor mount (5) and the delivery dish (3), through which flow channel a flow (S) generated by the radial impeller (11) during operation is guided.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electrical engines, other than for land vehicles; electric motor-driven fans, ventilating fans and blowing machines for machines, engines and motors, other than for land vehicles; parts for the aforesaid electric motor-driven ventilators, fans, and blowers in this class, namely, adapted air and dust filters, screens, protective grilles, filter frames, inlet nozzles, wall rings, the aforesaid goods of metal and/or plastic; electric motor operated pumps Engine condensers in the nature of capacitors; temperature sensors Refrigerating apparatus; apparatus for ventilating, namely, ventilating fans for commercial and industrial use, electric fans, fans for HVAC units, fans for air conditioning apparatus; heating apparatus, namely, heating units for industrial purposes, heating boilers, heating installations; air-conditioning apparatus; refrigeration units for industrial purposes; heating units for industrial purposes; dust filters being parts of industrial ventilation installations; electric fans for motors and engines for industrial purposes; fittings for the aforesaid electric motor-driven ventilators, fans and blowers in this class, namely, adapted air and dust filters, screens, protective grilles, filter frames, inlet nozzles, wall rings, the aforesaid goods of metal and/or plastic; electric motor operated pumps, namely, coolant pumps as parts of cooling apparatus and heat pumps; dust separators being air purification apparatus Consultancy for drive and ventilation technology, in particular with regard to the use and incorporation of electric motors, fans, ventilators and blowing machines; Technical product development, for others, for drive, ventilation and air conditioning technology
A ventilation unit (1) is formed by at least one fan (2), a heat exchanger, axially spaced from the fan (2), and a housing (3). The housing (3) has a first housing section (4), with a constant flow cross-section, where the heat exchanger is arranged. A second housing section (5) adjoins the first section (4) in the axial flow direction. The fan (2) is arranged on the second housing section (5) in the axial flow direction. During operation, the fan conveys air through the heat exchanger, arranged in the first housing section (4), and through the second housing section (5). The flow cross-section of the second housing section (5) is reduced in the flow direction from the first housing section (4) to the fan (2) by an adaptation to the form of housing wall sections (6, 6′) of the second housing section (5).
A diagonal fan includes an electric motor, a housing, and a diagonal impeller received inside the housing and drivable via the motor. The diagonal flow during operation is deflected in an axial flow direction. The diagonal impeller includes impeller blades distributed in the circumferential direction and a slinger ring encloses said blades. The diagonal fan includes an inlet nozzle on the suction side accommodating a main flow for the diagonal fan. The inlet nozzle extends overlapping at least in sections relative to the radial section of the slinger ring forming a nozzle gap therewith. A bypass channel on the housing forms a flow connection from a pressure-side surrounding region (U) of the diagonal fan to an inflow side of the nozzle gap. During operation of the diagonal fan, a swirl-free secondary flow (NS) is guided at the inflow side of the nozzle gap via the bypass channel.
A method and an air treatment system with a fan arrangement having kmax fans. The respective speed ni of the fans is regulatable. A control and regulation system regulates the speeds ni, where iϵ[1, 2, 3, 4, 5, . . . , k] of the k of kmax fans. A certain operating point of the air treatment system is set with a specific overall power Ptotal of the air treatment system as a function of the respective set speeds ni. The control and regulation system has a mechanism to determine the speed combination(s) of the speeds ni of the k fans where the total power Ptotal of the air treatment system is reduced or is minimal compared to other speed combinations of the speeds ni.
F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
F24F 11/62 - Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
F24F 11/46 - Improving electric energy efficiency or saving
