The invention relates to a method (10) for determining an unknown load state of a filter in a ventilation system, wherein the method comprises the following steps: a) continuously or repeatedly acquiring at least one measured variable of the ventilation system over a period of time during an unknown load state of the filter; b) providing a trained neural network (11) for determining a measure of reconstruction; c) reducing the data acquired in step a) of the at least one measure variable to a latent space by means of the trained neural network (11); d) reconstructing the acquired data from the latent space by means of the trained neural network (11); e) determining the measure of reconstruction by comparing the acquired data with the reconstructed data; and f) determining a similarity value from the measure of reconstruction, wherein the similarity value quantifies a similarity to a defined load state of the filter.
An intelligent elevator electronic unit having a central processor which both implements a motor control including time-critical motor control signals and performs basic functions of elevator operation, such as responding to external calls, specifying a travel curve or evaluating a safety circuit of the elevator system in which the elevator electronic unit is used to control an elevator motor. The elevator electronic unit also includes the power output stage required for operating the elevator motor and can also include one or more additional processors, with which the functionality of the elevator electronic unit is expandable in a modular manner. With this architecture, it is possible in particular to safely perform software updates of the central processor and/or an additional processor, to perform a downstream security check of such a software update or, for example, to autonomously optimize the operation of the elevator system with the aid of the central processor.
B66B 1/30 - Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear
B66B 1/34 - Control systems of elevators in general Details
B66B 5/00 - Applications of checking, fault-correcting or safety devices in elevators
3.
METHOD FOR ACTIVELY MONITORING SOUND EMISSIONS OF TURBOMACHINERY, SYSTEM COMPRISING TURBOMACHINERY, AND DEVICE FOR CARRYING OUT THE METHOD
A method for actively monitoring sound emissions of turbomachinery, in particular turbomachinery which has an electric motor, preferably a ventilator or a turbomachine. A sound signal, which is produced by superimposing the sound emission of the turbomachinery with at least one counter sound signal, is captured by at least one receiver at at least one receiver position and is transmitted to a control unit, wherein the control unit has an artificial intelligence, and a control signal is generated by the artificial intelligence for at least one actuator while taking into consideration the sound signal such that the actuator generates a counter sound signal that interacts with the sound emission of the turbomachinery such that a sound load at least in the region of the receiver position or the receiver positions is reduced.
G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
A fan, in particular an axial or diagonal fan, comprising a housing and an impeller arranged therein and driven by an electric motor and having vanes extending between a hub ring and a cover ring, wherein a step diffuser is formed in the form of an abrupt expansion of the flow cross-section in the direction of flow downstream of the impeller and after exiting the region of the cover ring.
A fan comprises two impellers that are arranged one behind the other in the direction of through-flow and have a common drive or each have a drive. One of the impellers has a smaller outside diameter than the other impeller. A method serves to regulate the fan.
A method for operating at least one fan. The fan having an electric motor, wherein, during operation of the fan, at least one measured value is recorded by means of at least one sensor that measures a sound pressure and/or a structure-borne sound vibration, the at least one measured value being used as a parameter by a computing unit. The computing unit determines acoustic and/or psychoacoustic characteristic values for at least one defined time interval and/or for at least one defined operating point. The fan is operated at permissible operating points in which the acoustic and/or psychoacoustic characteristic values lie in a defined range. The disclosure also relates to a system for carrying out the method.
An axial, diagonal or radial fan having an impeller driven by an electric external rotor motor, wherein the impeller comprises a hub ring carrying blades and which is connected in a rotationally fixed manner to the rotor, and wherein a hub contour is provided on the inflow side on the hub ring, which hub contour has a flow-guiding outer surface and a central opening adjoining the outer surface radially inwards with an inner surface directed towards the rotor.
F04D 29/32 - Rotors specially adapted for elastic fluids for axial-flow pumps
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
8.
METHOD FOR QUANTITATIVELY DETERMINING CURRENT OPERATING-STATE-DEPENDENT VARIABLES, MORE PARTICULARLY THE CURRENT CONVEYED VOLUMETRIC FLOW RATE, OR A FAN, AND FAN FOR APPLICATION OF THE METHOD
The present disclosure relates to a method for quantitatively determining the current conveyed volumetric flow rate or another operating-point-dependent variable of a fan which comprises a motor-driven impeller, which method uses a motor-internal variable and a motor-external variable, from which the conveyed volumetric flow rate or another operating-point-dependent variable is directly or indirectly calculated or determined by means of an algorithm.
The inlet nozzle for fans has a securing part (1) and an annular wall (3) connected to it, on which at least one protruding pressure connection (18) is provided. In order to be able to provide the pressure connection (18) in a more simple and reliable manner and at low cost, it is formed as a single piece with the inlet nozzle. In this way, additional assembly steps for attaching the pressure connection (18) can be avoided. The pressure connection (18) is provided directly during the manufacturing of the inlet nozzle. This avoids manufacturing and assembly costs as well as possible rejects due to the assembly process. No assembly devices are required, which would lead to increased costs of manufacturing the inlet nozzle. Given that the pressure connection (18) is part of the inlet nozzle, no additional storage locations need to be provided for the pressure connections (18).
The invention relates to a method for monitoring the operation of a fan for a stall, the method including the following steps: 1a) continuously or repeatedly detecting at least one measurement variable of the fan over a first time period during a first operating state (1) in which there is a stall, and/or 1b) continuously or repeatedly detecting at least one measurement variable of the fan over a second time period during a second operating state (2) in which there is no stall, 2) applying a machine pattern recognition to the data of the at least one measurement variable over the first and second time period detected in steps 1a) and/or 1b) in order to assign at least one pattern to at least one of the first operating state (1) and the second operating state (2) by means of which pattern this operating state can be uniquely distinguished from the respective other operating state, 3a) continuously or repeatedly detecting at least one measurement variable of the fan during operation, 3b) classifying a current operating state of the fan to the first or the second operating state based on the data of the at least one measurement variable of the fan during operation captured in step 3a).
The invention relates to an electronics housing (1) for an electric motor (15), wherein: the electronics housing (1) comprises a mounting surface (6) for axially fastening to a stator bush (20) of the electric motor (15); the mounting surface (6) defines a mounting plane (7) that extends radially to an axis of the electric motor (15); at least one cooling channel (10a, 10b) is formed on an outer wall (9) of the electronics housing (1), which cooling channel extends at least in part in the axial direction (11) and is designed to convey a cooling-air flow towards the stator bush (20) of the electric motor (15). The electronics housing (1) comprises a cooling-channel extension (12) for the cooling-air flow which extends in the axial direction (11) beyond the radial mounting plane (7) and forms an axial extension of the cooling channel (10b). The invention also relates to a corresponding electric motor (15).
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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 11/33 - Drive circuits, e.g. power electronics
12.
ROTOR FOR AN ELECTRIC MACHINE, PREFERABLY AN ELECTRIC MOTOR, AND METHOD FOR PRODUCING A ROTOR
The invention relates to a rotor intended for an electric machine, the rotor having a rotor shell (2) and an end wall (6) at one end of the rotor shell (2). The rotor shell (2) and the end wall (6) consist of magnetizable material and are at least partially magnetized. The rotor is produced from a magnetizable material. The rotor shell (2) and the end wall (6) are magnetized by way of a combined radial and axial Halbach array.
H02K 1/2792 - Surface mounted magnetsInset magnets with magnets arranged in Halbach arrays
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
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
13.
DEVICE FOR COOLING THE ELECTRIC MOTOR OF A FAN, FAN, AND METHOD FOR COOLING THE ELECTRIC MOTOR OF A FAN
The invention relates to a device for cooling the electric motor of a fan with air, wherein during operation the fan generates a pressure difference between the inflow side and electric motor and the outflow side and wherein the pressure difference is used to guide cooler ambient air from the outflow side to the electric motor.
A method of monitoring the operation of a fan, wherein the method comprises the following steps of: performing at least one measurement (1) by detecting at least one input signal (2.1, 8.1) over at least one time period, calculating characteristic values (2, 8) of an actual state based on the measured input signals (2.1, 8.1), comparing (3, 9) the calculated characteristic values (2, 8) of at least one actual state with limit values (3.1, 9.1), classifying (4) the actual state on the basis of the comparison (3) either as an anomaly-free normal state (5) or as a general anomaly state (6), and monitoring whether at least one specific anomaly state (12) is present.
A fan (1), more particularly a radial or diagonal fan, comprising a motor (4), an impeller (3) driven in rotation by the motor (4), an inlet nozzle (5) and a nozzle plate (2) extending around the inlet nozzle (5), wherein the impeller (3) essentially consists of a base disk (10), a cover disk (8) and several wings (9) extending between them, the nozzle plate (2) has an edge folded towards the pressure side and the cover disk (8) is rounded on its outer edge towards the suction side, and wherein the fold (6) of the nozzle plate (2) and the rounding of the cover disk (8) are shaped and dimensioned in such a way that the outflow from the impeller (3) close to the cover disk interacts with the bend of the nozzle plate (2).
A method is disclosed for assessing a vibration behavior of an electric motor, in particular an electric motor of a fan, and/or its operating environment. This method includesgenerating (S1) recorded vibration values by recording vibrations of at least one part of the electric motor (1), ascertaining (S2) a first assessment measure for the recorded vibration values, determining (S3) a spectral component of the recorded vibration values for an assessment frequency, ascertaining (S4) a second assessment measure for the spectral component of the recorded vibration values, and assessing (S5) the vibration behavior by comparing the first assessment measure with the second assessment measure. A corresponding electric motor, fan, and system is disclosed.
The invention relates to a flow machine, in particular a turbomachine, preferably a fan, having at least one component guiding a flow medium, for example blades of an impeller, guide vanes, hub ring, cover ring, base disc, nozzle or housing parts/components, wherein the component guiding the flow medium is produced by casting, preferably by injection moulding from plastic, and riblets are formed at least partially at and/or on and/or in the surface of the component in a region around which flow takes place. The invention also relates to a method for producing a component guiding a flow medium.
A method is disclosed for determining a vibration behavior of an electric motor, in particular an electric motor of a fan, and/or its installation environment, wherein a rotary motion of a rotor of the electric motor can be braked in a braking process. The disclosed method comprises:
generating a jolt by triggering a braking process or an acceleration process or by changing a braking process or an acceleration process,
generating detected vibration values by detecting vibrations of at least a part of the electric motor by means of at least one vibration sensor,
determining spectral components by means of a frequency analysis of the detected vibration values, and
determining a vibration behavior of the electric motor and/or its installation environment by evaluating the spectral components.
A method is disclosed for determining a vibration behavior of an electric motor, in particular an electric motor of a fan, and/or its installation environment, wherein a rotary motion of a rotor of the electric motor can be braked in a braking process. The disclosed method comprises:
generating a jolt by triggering a braking process or an acceleration process or by changing a braking process or an acceleration process,
generating detected vibration values by detecting vibrations of at least a part of the electric motor by means of at least one vibration sensor,
determining spectral components by means of a frequency analysis of the detected vibration values, and
determining a vibration behavior of the electric motor and/or its installation environment by evaluating the spectral components.
Further disclosed is a corresponding electric motor, fan, and system, each of which may be configured to carry out the method.
H02P 3/22 - 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 by short-circuit or resistive braking
19.
OUTLET GUIDE VANE DEVICE FOR A VENTILATOR, AND VENTILATOR COMPRISING AN OUTLET GUIDE VANE DEVICE
The invention relates to an outlet guide vane device for a ventilator which has at least one impeller that comprises impeller blades, comprising an outer housing and at least one guide vane with inner guide blades, wherein the guide vane has an intermediate ring which is held preferably concentrically in/on the housing by means of at least three strut blades distributed over the circumference. The invention additionally relates to a ventilator comprising a corresponding outlet guide vane device.
The invention relates to a fan with an impeller, and an electric motor, wherein the electric motor comprises a stator, a rotor and possibly an electronics pot, wherein a cooling structure is formed or provided on the outer wall radially outside the stator and/or the electronics pot, which cooling structure forms a flow path for a fluid, preferably for air, by way of which a flow is induced as a consequence of a pressure difference generated by the operation of the fan, which flow dissipates heat from the electric motor and/or from the stator and/or from the electronics pot. Moreover, the invention relates to a corresponding cooling structure for a fan.
A fan having an impeller comprising blades, an electric motor driving the impeller, and a scroll housing, wherein a flow channel is formed by the inner contour of the scroll housing, wherein an inlet nozzle, designed as a rotating body in an embodiment, is provided on the inflow side, and wherein the flow channel guides the air aspirated by the inlet nozzle via the impeller to an outlet, is characterized in that the inlet nozzle is surrounded by an inflow area having an inflow surface, which expands the inlet nozzle essentially in the radial direction, i.e., transversely to the impeller axis. A scroll housing is designed accordingly.
The stator has a ring area from which teeth (1, 2) protrude. The teeth each have an arm (4) that extends from the ring area, has a web (5) running transversely to it at the free end and carries at least one winding. It has at least one coil (SP1) wound by a winding wire (43) and is accommodated in a winding space (54, 55) extending from the ring area. The winding space (54, 55) is divided by at least one divider (14, 15) into successive winding sections, which are provided on the arm (4). With the divider (14, 15), the respective winding space section (54, 55) can be adapted to the wire diameter and the number of windings in such a way that the start and end of the wire can be provided in the radially inner ring area of the stator.
The invention relates to a method for actively monitoring sound emissions of turbomachinery, in particular turbomachinery which has an electric motor, preferably a ventilator or a turbomachine. A sound signal, which is produced by superimposing the sound emission of the turbomachinery with at least one counter sound signal, is captured by at least one receiver at at least one receiver position and is transmitted to a control unit, wherein the control unit has an artificial intelligence, and a control signal is generated by the artificial intelligence for at least one actuator while taking into consideration the sound signal such that the actuator generates a counter sound signal that interacts with the sound emission of the turbomachinery such that a sound load at least in the region of the receiver position or the receiver positions is reduced. The invention additionally relates to a system and a device, preferably for carrying out the method according to one of the claims 1 to 8.
G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
The invention relates to an electric motor 1 that has a stator 2, which is designed to produce a rotating magnetic field, and a rotor 3, which is rotatably mounted about a rotation axis 6 and which has a number of permanent magnets 5. The aim of the invention is to increase the electric efficiency but also reduce vibrations during operation. This is achieved in that a stator winding 4 is inserted into grooves 14 of the stator 2 and is energized using a multiphase current, the stator 2 forms a magnetic field which is characterized by a number NU of base areas 13, and maximally five of the grooves 14 of the stator 2 are used per base area 13. In the process, preferably at least seven, more preferably at least eight or even at least ten base areas 13 are formed or can be formed along the circumference of the stator 2 in a corresponding energizing process of the stator winding 4 (fig. 1).
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
The invention relates to a fan, in particular an axial or diagonal fan, comprising a housing and an impeller arranged therein and driven by an electric motor and having vanes extending between a hub ring and a cover ring, wherein a step diffuser is formed in the form of an abrupt expansion of the flow cross-section in the direction of flow downstream of the impeller and after exiting the region of the cover ring.
Disclosed embodiments relate to a housing for a fan that is constructed by cutting, bending, and/or folding a single sheet of metal. A disclosed housing is configured to house a fan having a motor that is configured to rotate around an axial direction. The housing includes a first plate that is oriented in a plane that is perpendicular to the axial direction and substantially flat wall regions extending away from the first plate so as to be non-coplanar with the first plate. The housing further includes a second plate having an air intake nozzle, the second plate oriented perpendicularly to the axial direction and thereby oriented parallel to the first plate and located a first distance along the axial direction from the first plate, with the first distance being determined by a length of the wall regions. The wall regions are configured to include air flow openings.
An axial, diagonal or radial fan comprises a rotor driven by an external rotor motor, the rotor having an annular hub carrying blades and the annular hub being connected to a rotor for conjoint rotation. On the inflow side, the annular hub has a hub contour that has a flow-conducting outer face and a center hole that is radially inwardly contiguous to the outer face and has an inner face oriented towards the rotor.
A support module for a fan, which includes a motor and a fan impeller driven in rotation by the motor, in an embodiment for a radial or diagonal fan, for fastening the fan impeller between a nozzle plate on the inflow side and a base plate lying opposite the nozzle plate at a distance, wherein the motor is non-rotatably mounted with the fan impeller on or in the base plate and is held on the nozzle plate by means of struts extending between the base plate and the nozzle plate characterized in that the struts are adjusted to the flow exiting the fan impeller with a compact design. A fan is provided with a corresponding support module.
The invention relates to a method for operating at least one fan (1, 1'), the fan (1, 1') preferably having an electric motor, wherein, during operation of the fan (1, 1'), at least one measured value is recorded by means of at least one sensor (2, 2'), in particular a sound pressure and/or a structure-borne sound vibration, the at least one measured value being used as a parameter by a computing unit (3) in order to determine acoustic and/or psychoacoustic characteristic values for at least one defined time interval and/or for at least one defined operating point, and the fan (1, 1') being operated, preferably exclusively, at permissible operating points in which the acoustic and/or psychoacoustic characteristic values lie in a defined range. The invention also relates to a system for carrying out the method.
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 11/74 - 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
32.
METHOD FOR QUANTITATIVELY DETERMINING CURRENT OPERATING-STATE-DEPENDENT VARIABLES, MORE PARTICULARLY THE CURRENT CONVEYED VOLUMETRIC FLOW RATE, OF A FAN, AND FAN FOR APPLICATION OF THE METHOD
The invention relates to a method for quantitatively determining the current conveyed volumetric flow rate or another operating-point-dependent variable of a fan which comprises a motor-driven impeller, which method uses a motor-internal variable and a motor-external variable, from which the conveyed volumetric flow rate or another operating-point-dependent variable is directly or indirectly calculated or determined by means of an algorithm.
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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
A housing for a fan, in an embodiment for an axial or diagonal fan, with the fan including an impeller and at least one flow-through region, wherein immediately downstream of the impeller or the blades of the impeller in an outer region of the housing and thus in the flow-through region, multiple individual, free-standing guide elements are provided. A fan includes a corresponding housing.
The invention relates to a method for ascertaining the winding temperature of an electric motor comprising a microcontroller (MCU), in particular the winding temperature of a permanent-magnet synchronous motor (PMSM), preferably as a drive for a mechanical fan. Said method is characterized in that the winding temperature is ascertained using known or ascertainable parameters for the electric motor on the basis of a reference point composed of a reference temperature and a winding resistance at the reference temperature.
H02P 29/64 - Controlling or determining the temperature of the winding
H02H 7/00 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
A fan, in particular axial fan and preferably backward-curved radial fan, having an impeller equipped with blades, an electric motor for rotating the impeller and a device for determining the airflow when the impeller is rotating. The device for determining the airflow includes a volume flow measuring wheel arranged in the air flow, which is arranged upstream of the impeller on the inflow side. The air volume flow is calculated or derived from the rotational speed of the volume flow measuring wheel.
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
F04D 17/16 - Centrifugal pumps for displacing without appreciable compression
G01F 1/80 - Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
G01F 1/10 - 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 using rotating vanes with axial admission
G01F 1/84 - Coriolis or gyroscopic mass flowmeters
G01F 1/11 - 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 using rotating vanes with axial admission with mechanical coupling to the indicating device
G01F 1/90 - Indirect mass flowmeters, e.g. measuring volume flow and density, temperature, or pressure with positive-displacement meter or turbine meter to determine the volume flow
G01F 1/12 - Adjusting, correcting, or compensating means therefor
G01F 1/82 - Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted using a driven wheel as impeller and one or more other wheels or moving elements which are angularly restrained by a resilient member, e.g. spring member, as the measuring device
F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F04D 19/00 - Axial-flow pumps specially adapted for elastic fluids
F04D 29/52 - CasingsConnections for working fluid for axial pumps
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
The invention relates to a fan (1), more particularly a radial or diagonal fan, comprising a motor (4), an impeller (3) rotationally driven by the motor (4), an inlet nozzle (5) and a nozzle plate (2), which extends around the inlet nozzle (5), wherein: the impeller (3) consists essentially of a bottom disk (10), a top disk (8) and a plurality of blades (9) extending therebetween; the nozzle plate (2) has an edge folded toward the pressure side; the top disk (8) is rounded, at its outer edge, toward the suction side; and the folded portion (6) of the nozzle plate (2) and the rounded portion of the top disk (8) are shaped and dimensioned such that the outflow from the impeller (3) near the top disk interacts with the bent portion of the nozzle plate (2).
The invention relates to a method for determining vibration behavior of an electric motor (1), more particularly an electric motor of a fan, and/or of its installation environment, wherein rotational motion of a rotor of the electric motor can be braked in a braking operation. The method comprises the steps of: • producing a jerk by triggering a braking operation or an accelerating operation or by changing a braking operation or an accelerating operation, • producing (S3) sensed vibration values by sensing vibrations of at least one part of the electric motor by means of at least one vibration sensor (9), • determining (S4) spectral components by means of a frequency analysis of the sensed vibration values, and • determining (S5) vibration behavior of the electric motor and/or of its installation environment by evaluating the spectral components. The invention also relates to a corresponding electric motor (1), to a fan, and to a system, which can each be designed to carry out the method.
A method for determining a state of an electric motor having a stator (2) and a rotor (3) rotatably mounted relative to the stator (2) is disclosed. Due to a rotary motion of the rotor (3), a pressure difference (p) relative to an environment (15) of the electric motor (1, 1′, 1″, 1′″) is caused in an air space (16) inside the electric motor (1, 1′, 1″, 1′″). Here, in a normal state of the electric motor (1, 1′, 1″, 1′″), the pressure difference depends on an actual rotational speed (n) of the rotor (3). A corresponding electric motor suitable for carrying out this method is disclosed, wherein the electric motor may be part of a fan.
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 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 11/35 - Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis
H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
41.
METHOD FOR ASSESSING THE VIBRATION BEHAVIOUR OF AN ELECTRIC MOTOR, AND CORRESPONDING ELECTRIC MOTOR AND FAN
A disclosure is given of a method for assessing the vibration behaviour of an electric motor, in particular an electric motor of a fan, and/or of its operating environment. This method comprises the steps of: generating (S1) acquired vibration values by acquiring vibrations of at least one part of the electric motor (1) using a vibration sensor (9), ascertaining (S2) a first assessment metric for the acquired vibration values, wherein the first assessment metric is representative of the magnitude of the vibrations of the at least one part of the electric motor (1), determining (S3) a spectral component of the acquired vibration values for an assessment frequency, ascertaining (S4) a second assessment metric for the spectral component of the acquired vibration values, wherein the second assessment metric is representative of the magnitude of the vibrations of the at least one part of the electric motor (1) at the assessment frequency, and assessing (S5) the vibration behaviour by comparing the first assessment metric with the second assessment metric, it being decided that a resonant point is present when the ratio between the second assessment metric and the first assessment metric exceeds a predefined limit value. A corresponding electric motor, fan and system are also disclosed.
The invention relates to a method for monitoring the operation of a fan, the method including the following steps: performing at least one measurement (1) by detecting at least one input signal (2.1, 8.1) over at least one time period, calculating parameters (2, 8) of an actual state on the basis of the measured input signals (2.1, 8.1), comparing (3, 9) the calculated parameters (2, 8) of at least one actual state with limit values (3.1, 9.1), classifying (4) the actual state on the basis of the comparison (3), either as a normal state (5) without anomalies or as a general anomalous state (6), and monitoring whether at least one specific anomalous state (12) is present.
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
43.
METHOD FOR THE QUANTITATIVE DETERMINATION OF A CURRENT OPERATING STATE-DEPENDENT VARIABLE OF A FAN, IN PARTICULAR A PRESSURE CHANGE OR PRESSURE INCREASE, AND FAN
Method for the quantitative determination of a current operating state-dependent variable, for example the pressure increase, of a fan, wherein, given a known volume or mass flow of the fan, a current operating state-dependent variable is determined via its rotational speed.
A fan with an impeller having, in an embodiment, backward-curved blades and having a scroll housing, the flow channel of which is formed by an inner spiral contour of the housing, the flow channel guiding the air conveyed by the impeller towards an outlet wherein the spiral contour with its local pitch angles is adapted to the outlet angle from the impeller.
2) present on the outflow side. The speed ascertainment system is designed to ascertain an actual speed (n) of the impeller (3). The evaluation unit is finally designed to quantitatively determine a mass flow and/or a volume flow of the medium based on the actual pressure difference (Δp*), the actual speed (n), and a pressure characteristic curve of the fan (1).
Furthermore, an electric motor for this fan and a corresponding method are disclosed.
A fan (1) having an impeller comprising vanes (8), an electric motor (10) driving the impeller, and a volute casing (2), wherein the internal contour of the volute casing (2) forms a flow duct, wherein on the inflow side there is provided an inflow nozzle (14) that is preferably designed as a rotary body, and wherein the flow duct guides the air, drawn in through the inflow nozzle (14), via the impeller (3) to an outlet (5), is characterized in that the inflow nozzle (14) is surrounded by an inflow region comprising an inflow area (24), which widens the inflow nozzle (14) essentially in the radial direction, that is to say transversely to the impeller axis (25). A volute casing (2) is designed accordingly.
The invention relates to a fan, more particularly an axial fan, comprising: - an electric motor (1), which has a rotor (2); and - blades (3), which are connected to the rotor (2); wherein the blades (3) extend, on the rotor side, at least over a cylindrical region (5) of the rotor (2) or its hub in the axial direction, and wherein the end of the leading edge of the blade (3) near the rotor and/or the end of the trailing edge (10) of the blade (3) near the rotor has, in a region directly at the rotor (2) or near the rotor (2), a bend (6) in the sense of a winglet. The invention also relates to an impeller for a fan and to a blade for an impeller of this type.
AEAAA); - triggering the coasting process (3) by deactivating a feed driving the electric motor (23); - repeatedly producing a sensed vibration value during the coasting process (3) by sensing vibrations of at least one part of the electric motor by means of at least one vibration sensor (28); - repeatedly producing an actual rotational speed value of the electric motor (23) during the coasting process (3); and - determining the vibration behavior of the electric motor (23) by evaluating sensed vibration values while taking into consideration actual rotational speed values. The invention further relates to a corresponding electric motor (23) and a corresponding fan.
G01H 1/00 - Measuring vibrations in solids by using direct conduction to the detector
G01H 17/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the other groups of this subclass
G01H 11/06 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
G01M 7/00 - Vibration-testing of structuresShock-testing of structures
51.
Method for detecting condensate formation which is imminent or has already taken place on/in electric motors, and method for avoiding corresponding condensate formation and/or for eliminating/reducing condensate on/in electric motors
A method for evaluating a vibration behavior of an electric motor includes: determining a vibration value of the electric motor by measuring an acceleration and/or speed of vibrations of the electric motor using a vibration sensor of the electric motor, wherein vibrations are measured in at least one direction, said vibration value representing each of the at least direction measured, determining a current rotational speed (n) of the electric motor, comparing said vibration value with a reference value for the current rotational speed, and determining an evaluation measure for evaluating the vibration behavior of the electric motor based on the comparison of the vibration value with the reference value. Furthermore, a corresponding electric motor and a system consisting of the electric motor and a test system is disclosed with which the vibration behavior of the electric motor can be calibrated and reference values can be generated.
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
Disclosed is an electric motor with a stator, a rotor rotatably mounted relative to the stator and motor electronics. The motor electrics is arranged in an electronics housing and mounted on a circuit board. On the circuit board there is arranged at least one vibration sensor configured for measuring an acceleration and/or speed of vibrations of the electric motor in at least one direction. In addition, said circuit board is vibrationally coupled with other components of the electric motor using at least one coupling element, so that at least parts of the vibrations of the electric motor are transmitted to the vibration sensor. Furthermore, a fan is disclosed, including an electric motor and an impeller. A method for evaluating a vibration state of an electric motor is disclosed, wherein said electric motor can be formed by an electric motor as also disclosed herein.
A method is disclosed for evaluating an operational readiness of an electric motor, such as an electric motor of a fan. The method includes: initiating a run-up process of the electric motor, the speed being changed in several speed levels during the run-up process, generating at least one measured value by measuring a physical variable with a sensor of the electric motor in at least one of the speed levels, loading at least one parameter datum from a parameter memory of the electric motor, wherein the at least one parameter datum corresponds to the at least one measured value generated, and evaluating the at least one measured value for at least one of the speed levels using the at least one loaded parameter datum. Further disclosed are an electric motor with a parameter memory and a parameterization interface as well as a fan with this electric motor and an impeller.
G08B 5/36 - Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmissionVisible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electromagnetic transmission using visible light sources
56.
Electric motor, fan, and system including an electric motor and an evaluation unit
An electric motor includes at least one bearing and a rotatably-mounted axle. During operation, generated sound can be detected by a sound sensor. A sound chamber is formed in the electric motor, and is delimited by several boundary surfaces. At least one of the boundary surfaces may include an acoustic surface that is formed by a surface of the bearing or by a surface of a body conducting sound. The sound sensor is arranged in the sound chamber to detect sound transmitted from the acoustic surface to the sound sensor. The motor may be part of a fan and/or a system having an evaluation unit. In the former case, an impeller is provided, which is connected to a rotor of the electric motor. In the second case, the evaluation unit has a communication interface via which readings of a sound sensor and/or processed readings from sensor electronics may be received.
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 11/33 - Drive circuits, e.g. power electronics
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 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
57.
Electric motor with service life estimating unit and ventilator with corresponding electric motor
An electric motor includes a stator and a rotor which is rotatably mounted relative to the stator about a motor axis. The electric motor further includes an inclination measuring unit at least one sensor and one sensor electronics, said at least one sensor being arranged in a fixed position and orientation relative to the stator, said sensor electronics controlling said at least one sensor, and said at least one sensor being configured for generating measured values, which allow conclusions to be drawn about the spatial orientation of the sensor and thus conclusions about the spatial orientation of the electric motor. The electric motor can be part of a fan. Furthermore, there is disclosed a corresponding motor electronics configured for controlling such an electric motor.
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 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 11/33 - Drive circuits, e.g. power electronics
A fan, such as an axial, radial, or diagonal fan, includes a fan impeller and an outlet guide device located in a housing/flow channel downstream of the fan impeller. The outlet guide device may include outlet guide blades that, when viewed in the spanwise direction or radial direction, extend over only a portion of the flow area.
Disclosed embodiments include a system and method of acquiring operating parameter data of a motor system that includes an electric motor. The motor system may be provided as a component of a fan. An embodiment includes recording states of operating parameters during operation of the motor system, wherein the operating parameters include a basic parameter and at least one additional parameter; determining a state-change event of the basic parameter based on a recorded state of the basic parameter; recording a state of the additional parameter upon detection of the state-change event of the basic parameter; linking the recorded state of the additional parameter to the detected state-change event; and storing the recorded state of the additional parameter linked to the detected state-change event.
The invention relates to a support module for a fan, which fan comprises a motor and a fan impeller rotationally driven by the motor, in particular for a radial or diagonal fan, for fastening the fan impeller between an inflow-side nozzle plate and a bottom plate, which lies opposite from the nozzle plate at a distance, the motor together with the fan impeller being mounted, with rotational fixation, on or in the bottom plate and being held on the nozzle plate by means of struts extending between the bottom plate and the nozzle plate. Said support module is characterized in that, in a compact design, the struts are adapted to the flow exiting from the fan impeller. A fan is equipped with a corresponding support module.
A housing for a fan, preferably for an axial or diagonal fan, wherein the fan comprises an impeller wheel and at least one throughflow region, is characterized in that a plurality of individual, freestanding guide elements are provided immediately downstream of the impeller wheel or of the blades of the impeller wheel in an outer region of the housing and therefore in the throughflow region. A fan comprises a corresponding housing.
Disclosed fans include an impeller and a guide device. The impeller is configured to generate an air flow path having an upstream direction and a downstream direction, and the guide device is positioned in the flow path located on an upstream side of the impeller. The guide device is configured as an intake grid having flat webs having branches and node points, and the webs form a plurality of flow channels configured as grid cells. The webs extend either between two branches or between one branch and a border area and each branch may include three webs that meet. In one configuration, flow channels include channels having a honeycomb cross section. In other example, flow channels may have a rectangular, pentagonal, and/or hexagonal shape. The fan further includes an inlet nozzle having an inlet area, and the guide device is located upstream from the inlet area of the inlet nozzle.
A disclosed method of determining operating states of a fan uses a digital image of the fan and at least one operating parameter-specific algorithm. In a first stage, the method includes generating the digital image of the fan as a representation of the fan's properties, the representation based on one or more mathematical calculation models and optionally known data. The method further includes generating the at least one operating parameter-specific algorithm based on at least one of known relationships and characteristic curves, and calculating component states of the fan via the digital image, wherein the calculation of component states is based on virtual sensors. The method further includes generating a system behavior algorithm that calculates operating parameters of the fan based on the component states and optionally generates predictions relating to the operation of the fan.
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
64.
METHOD FOR THE QUANTITATIVE DETERMINATION OF AN ACTUAL OPERATING STATE-DEPENDENT VARIABLE OF A FAN, IN PARTICULAR OF A PRESSURE CHANGE OR PRESSURE INCREASE, AND FAN
The invention relates to a method for quantitatively determining an actual operating-state-dependent variable, for example the pressure increase of a fan, wherein, an actual operating-state-dependent variable is determined via its rotational speed using known volume or mass flows of the fan.
A method for optimizing the efficiency and/or the running performance of a fan, wherein, starting from component-specific or function-specific numerical detailed models, on the basis of at least one algorithm, a model reduction and thus data reduction (data refinement) to component-specific or function-specific behavior models takes place, wherein the reduced data of the behavior models are coupled or combined in a system simulation to form a system behavior model having input and output variables, and wherein the input variables and associated output variables of the fan from the system behavior model are provided to an optimizer for selection in order to achieve optimized control of the system depending on framework conditions.
A fan having an impeller wheel with more particularly backwardly curved blades and having a spiral housing the flow channel of which is formed through an inner spiral contour of the housing, the flow channel guiding the air supplied from the impeller wheel through to an outlet, is characterised in that the local pitch angles of the spiral contour are adapted to the outflow angle out of the impeller wheel.
The invention relates to a method for determining the state of an electric motor which has a stator (2) and a rotor (3) rotatably mounted relative to the stator (2). On the basis of a rotational movement of the rotor (3), a pressure difference (p) relative to the surroundings (15) of the electric motor (1, 1', 1", 1'") is produced in an air chamber (16) within the electric motor (1, 1', 1", 1'"). In a normal state of the electric motor (1, 1', 1", 1'"), the pressure difference is based on the actual rotational speed (n) of the rotor (3). The method has the steps of: ascertaining the actual pressure difference (p) between the air chamber (16) and the surroundings (15) of the electric motor (1, 1', 1", 1'"), ascertaining the actual rotational speed (n) of the rotor (3), calculating a characteristic (k) on the basis of the actual pressure difference (p) and the actual rotational speed (n), whereby a characteristic (k) is produced which represents the state of the electric motor, comparing the characteristic (k) with a threshold, and determining the state of the electric motor (1, 1', 1", 1'") on the basis of the result of the comparison of the characteristic (k) with the threshold. The invention additionally relates to a corresponding electric motor which is suitable for carrying out said method, wherein the electric motor can be part of a ventilator.
H02P 29/60 - Controlling or determining the temperature of the motor or of the drive
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 9/24 - Protection against failure of cooling arrangements, e.g. due to loss of cooling medium or due to interruption of the circulation of cooling medium
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
H02H 5/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
68.
VENTILATOR AND METHOD FOR DETERMINING A FLOW OF MEDIA MOVED BY THE VENTILATOR
A1B22) present on the outflow side. The rotational speed ascertaining system is designed to ascertain the actual rotational speed (n) of the impeller (3). Finally, the analysis unit is designed to quantitatively determine a mass flow and/or a volumetric flow of the medium on the basis of the actual pressure difference (Δp*), the actual rotational speed (n), and a pressure characteristic of the ventilator (1). The invention additionally relates to an electric motor for the ventilator and to a corresponding method.
A method for determining the remaining service life of a capacitor is disclosed, wherein the capacitor may be formed by an electrolytic capacitor. The method includes the stages of: measuring a voltage change across the capacitor during a discharging time, determining a discharging current during the discharging time, determining an actual capacitance of the capacitor on the basis of the voltage change, the discharging current and the discharging time, determining a corrected capacitance of the capacitor from the actual capacitance based on an error correction, wherein influences of the temperature on the capacitance of the capacitor are corrected during the error correction, and determining the remaining service life on the basis of a difference between the corrected capacitance and an initial capacitance of the capacitor. A system including an assessment device, configured to perform this method, and a circuit having at least one capacitor to be assessed are also disclosed.
G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere
G01R 31/01 - Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass productionTesting objects at points as they pass through a testing station
70.
Filter circuit for reducing feedback of a consumer on an energy supply
A filter circuit for reducing feedback of a consumer on an energy supply is disclosed. This filter circuit includes a multipolar input, a line choke, and a multipolar output, wherein the input is configured to receive an AC voltage from the energy supply, wherein the output is configured to be connected to the consumer, wherein the line choke includes one coil for each pole of the input, and wherein the coils of the line choke are each connected between one pole of the input and one pole of the output and energy is transferred from the input to the output and/or vice versa. A resonant current suppression (RCS) group is connected in parallel to a coil of the line choke to transmit resonant currents arising at the line choke such that voltage increases generated by the resonant currents are reduced or suppressed by the at least one RCS circuit.
H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
H03H 7/42 - Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
H02J 3/01 - Arrangements for reducing harmonics or ripples
H02M 1/12 - Arrangements for reducing harmonics from AC input or output
The invention relates to a fan, particularly an axial-flow fan and preferably a backward-curved centrifugal fan, comprising an impeller wheel provided with wings, an electric motor for rotating the impeller wheel, and a device for determining the air flow when the impeller wheel is rotating. The device for determining the air flow comprises a volumetric flow measuring wheel which is positioned in the air flow in front of the impeller wheel on the inflow side. The volumetric air flow is calculated or derived from the rotational speed of the volumetric flow measuring wheel.
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
G01F 1/115 - 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 using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device
72.
Vanes for the impeller of a ventilator, impeller, and axial ventilator, diagonal ventilator, or radial ventilator
A disclosed system includes an impeller for a ventilator. The impeller includes a hub or hub ring configured to rotate about an axis and a plurality of vanes attached to the hub or hub ring. Each vane of the impeller has a leading edge facing a pressure side of the ventilator along the axis, and a trailing edge facing a suction side of the ventilator along the axis. The leading edge of each vane has a corrugated shape characterized by a first wavelength and the trailing edge has a corrugated shape characterized by a second wavelength, with the first wavelength being longer than the second wavelength. The impeller may further include injection molded plastic, die-cast aluminum, stamped sheet metal, or laser cut sheet metal that is embossed. The impeller may further be assembled from separately manufactured pieces that are secured to one another using joining, welding, or by interlocking tabs.
The invention relates to a method for forecasting a failure of a ventilator group having N ventilators, of which n ventilators are redundant, where 1 < n ≤ N. When n ventilators fail, the ventilator group fails. The failure probabilities of the ventilators can be described as a function of an operating duration of the ventilator group by a probability distribution, wherein the probability distribution can be parameterised at least by one parameter. The method comprises the following steps: generating a first failure probability, which indicates a probability of a first failure of a ventilator of the ventilator group; generating an nth failure probability, which indicates a probability of an nth failure of a ventilator of the ventilator group; determining a first time of failure, the first time of failure indicating the operating duration of the ventilator group until the first failure of a ventilator; generating a parameterised probability distribution by approximating the probability distribution to a first value pair consisting of the first failure probability and the first time of failure; and calculating the nth time of failure as the time of the nth failure of a ventilator by means of the parameterised probability distribution and the nth failure distribution. The invention further relates to a corresponding system and to a ventilator group having a system of this kind.
A fan (radial or axial fan), with an impeller and with a preguide device in the flow path in front of the impeller, preferably in front of the inlet region of an inlet nozzle, has the preguide device as a preguide grid with webs and/or guide vanes which are arranged and shaped such that flow influencing in the circumferential direction occurs for a substantially swirl-free inflow.
METHOD FOR DETECTING CONDENSATE FORMATION WHICH IS IMMINENT OR HAS ALREADY TAKEN PLACE ON/IN ELECTRIC MOTORS, AND METHOD FOR AVOIDING CORRESPONDING CONDENSATE FORMATION AND/OR FOR ELIMINATING/REDUCING CONDENSATE ON/IN ELECTRIC MOTORS
A method is used to detect condensation which is imminent or has already taken place on/in electric motors, in particular on/in electric motors as part of fans or fan groups. The method comprises the following method steps: determining component temperatures, preferably surface temperatures on the electronics, on/in the motor, on/in the fan or on/in fan groups, determining the dew point temperature or individual dew point temperatures on the electronics, in/on the motor, fan or on/in fan groups, comparing the particular component temperature with the particular dew point temperature, and concluding condensate formation which is imminent or has already taken place if the component temperature approaches the dew point temperature or if the dew point temperature is undershot. A further method is used to avoid condensate formation and/or to eliminate/reduce condensate on/in electric motors, in particular on/in electric motors as part of fans or fan groups. The method comprises the following method steps: detecting condensate formation which is imminent and/or has already taken place on or in the motor, and initiating measures for avoiding the condensate formation and/or for eliminating/reducing the condensate by means of passive or active measures.
H02P 29/032 - Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
H02K 9/00 - Arrangements for cooling or ventilating
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 11/25 - Devices for sensing temperature, or actuated thereby
H02P 29/60 - Controlling or determining the temperature of the motor or of the drive
H02P 29/62 - Controlling or determining the temperature of the motor or of the drive for raising the temperature of the motor
76.
ELECTRIC MOTOR AND METHOD FOR EVALUATING THE VIBRATION STATE OF AN ELECTRIC MOTOR
The invention relates to an electric motor with a stator (2), a rotor which is mounted in a rotatable manner relative to the stator, and an electronic motor unit. The electronic motor unit is arranged in an electronic housing (7) and is constructed on a printed circuit board (10). The printed circuit board (10) is equipped with at least one vibration sensor (13) which is designed to measure the acceleration and/or speed of vibrations of the electric motor (1) in at least one direction. Additionally, the printed circuit board (10) is vibrationally coupled to other components of the electric motor (1) by means of at least one coupling element so that at least components of the vibrations of the electric motor are transmitted to the vibration sensor (13). The invention also relates to a ventilator which comprises an electric motor according to the invention and an impeller. The invention additionally relates to a method for evaluating the vibrational state of an electric motor, wherein the electric motor can be an electric motor according to the invention.
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
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
77.
ELECTRIC MOTOR, VENTILATOR, AND SYSTEM CONSISTING OF AN ELECTRIC MOTOR AND ANALYSIS UNIT
The invention relates to an electric motor (1) with at least one bearing (4), by means of which a shaft (8) or an axle of the electric motor (1) is rotatably mounted. During the operation of the electric motor (1), sound is produced which can be detected by means of a sound sensor (12), wherein a sound source can be formed in particular by the at least one bearing (4). The electric motor (1) is equipped with a sound chamber (13) which is delimited by multiple delimiting surfaces. At least one of the delimiting surfaces comprises a sound surface. The sound surface is made of a surface of the bearing (4) or a surface of a body which guides sound to the surface. The sound sensor (12) is arranged in the sound chamber (13) and is designed so as to detect sound (15) transmitted from the sound surface to the sound sensor via air. The electric motor (1) can be part of a ventilator and/or a system with an analysis unit. In the first case, an impeller is provided which is connected to the rotor of the electric motor (1). In the second case, the analysis unit has a communication interface, via which measurement values of a sound sensor (12) and/or prepared measurement values from an electronic sensor unit (16) can be received by the analysis unit. The analysis unit is designed to then analyze the measurement values and/or the prepared measurement values.
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 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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 11/33 - Drive circuits, e.g. power electronics
The invention relates to a ventilator, in particular an axial, radial or diagonal ventilator, having a ventilator impeller and a downstream guiding device connected downstream in the housing/flow channel, wherein the downstream guiding device comprises guiding vanes. The invention is characterized in that the guiding vanes extend only over one part of the flow region, when viewed spanwise and in the radial direction.
The invention relates to an electric motor with a stator (2) and a rotor which is mounted in a rotatable manner about a motor axis (3) relative to the stator (2). The electric motor (1) comprises an inclination measuring unit with at least one sensor and an electronic sensor unit, wherein the at least one sensor is arranged in a fixed position and orientation relative to the stator (2), and the electronic sensor unit actuates the at least one sensor. The at least one sensor is designed to generate measurement values which allow conclusions to be drawn regarding the spatial orientation of the sensor and thus conclusions regarding the spatial orientation of the electric motor. The electric motor can be part of a ventilator according to the invention. Additionally, a corresponding electronic motor unit is provided which is designed to actuate such an electric motor.
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
80.
METHOD AND SYSTEM FOR EVALUATING THE VIBRATION BEHAVIOR OF AN ELECTRIC MOTOR
The invention relates to a method for evaluating the vibration behavior of an electric motor. The method has the steps of: determining a vibration value of the electric motor (1) by measuring the acceleration and/or speed of vibrations of the electric motor (1) using a vibration sensor (5) of the electric motor (1), wherein vibrations are measured in at least one direction, and the vibration value represents each of the measured at least one direction, determining a current rotational speed (n) of the electric motor, comparing the vibration value with a reference value for the current rotational speed, and determining an evaluation measurement in order to evaluate the vibration behavior of the electric motor on the basis of the comparison of the vibration value with the reference value. The invention additionally relates to a corresponding electric motor (1) and to a system consisting of the electric motor (1) and a testing system (2), by means of which the vibration behavior of the electric motor (1) can be calibrated and reference values can be generated.
A method for capturing operating parameter data for a motor system having an electric motor, wherein states of operating parameters are captured during operation of the motor system, wherein the operating parameters comprise a basic parameter and at least one additional parameter, wherein, based on a capture of the state of the basic parameter, state change events for the basic parameter are ascertained, wherein detection of a state change event for the basic parameter results in a state of the additional parameter being captured, and wherein the captured state of the additional parameter is stored in combination with the detected state change event. In addition, a corresponding motor system and a fan are specified.
The invention relates to a method for evaluating the operational readiness of an electric motor, in particular an electric motor of a ventilator. The method is preferably used during an initial operation. The method has the steps of: initiating a start-up process of the electric motor, wherein the rotational speed during the start-up process is changed in multiple rotational speed stages, generating at least one measurement value by means of a respective measurement of a physical variable using a sensor of the electric motor in at least one of the rotational speed stages, loading at least one piece of parameter data from a parameter storage unit of the electric motor, wherein the at least one piece of parameter data corresponds to the generated at least one measurement value, and evaluating the at least one measurement value for at least one of the rotational speed stages using the loaded at least one piece of parameter data. The invention additionally relates to an electric motor with a parameter storage unit and a parameterizing interface and to a ventilator with an electric motor and an impeller.
The invention relates to a method for determining a fluid delivery parameter of a fluid delivery device, in particular for determining a volume flow, comprising the steps of: – determining items of excitation information for a mechanical excitation of at least one fluid delivery element of the fluid delivery device in at least one spatial direction by means of at least one first sensor device, – providing items of operating information comprising at least a value of an operating variable of the fluid delivery device by means of a provision device, – analyzing the provided and determined items of information, – determining the fluid delivery parameter, in particular the volume flow, of the fluid delivery device on the basis of the analyzed items of information.
The invention relates to a housing for a ventilator, in particular for a radial or diagonal ventilator, having wall regions forming the housing, characterized in that the wall regions are substantially planar or flat.
The cooling device is intended for an electric motor and has a rotor cooling flange and a stator cooling flange (2), of which one is rotatable with respect to the other. At least one of the two cooling flanges (2) is provided with cooling ribs (8) arranged distributed over its circumference. During operation of the electric motor, at least one of the two cooling flanges gives off heat to the surrounding air. At least some of the cooling ribs (8) of a heat-emitting cooling flange (2) have an undulating profile over their length. In this context, the surface area of a cooling rib (8) having an undulating profile is larger than the surface area of the associated straight reference rib.
A disclosed fan system includes a housing having side walls, an inflow side, and an outflow side; a fan secured in the housing by a mounting; and a backflow blocker mounted to the side walls within the housing on the outflow side of the housing partially blocking a cross-sectional area of the outflow side. The backflow blocker is positioned approximately centrally in a flow path of the housing and is configured to block part of an airflow cross section such that, between side walls of the housing and side walls of the backflow blocker, an annular duct is formed as an air passage. Further, the backflow blocker has a thickness that is greater than 5% of a width of the housing, and is less than 20% of an axial design height of the fan system.
The invention relates to a fan (axial, radial or diagonal fan) comprising an impeller and an intake guide device in the flow path before the impeller, preferably before the inlet region of an inlet nozzle, the intake guide device as inflow grille (1) being designed with flat webs (5), which webs (5) form a plurality of lattice-like flow channels (6), the webs (5) extending quite predominantly between preferably two junctions (15) or between a respective junction (15) and an edge region (14, 31), and preferably predominantly three webs (5) per junction (15) meet. Alternatively the flow channels (6) of the inflow grille (1) have a honeycomb-like cross-section and/or the inflow grille (1) forms a basket-like contour in relation to the outer and/or inner enveloping surface. The invention also relates to a corresponding inflow grille.
Disclosed is a ventilator with an electrical drive and at least one rotating or non-rotating functional unit associated with the drive or with a structural component of the drive for generating and/or influencing an air current, wherein the functional unit is arranged coaxially around the drive or in front of it or after it, and wherein the association takes place directly or indirectly in a positive and non-positive manner by the intermeshing and mutual bracing of connection means.
The invention relates to an electric motor comprising a stator (A) with an insulation, a rotor, and an electronics and/or terminal housing (1) comprising a bottom (4), in which electrical/electronic components provided for the operation of the electric motor are housed. The electronics and/or terminal housing (1) is permanently connected to the stator (A) by means of an overmould (17b) so as to form a stator unit, the bottom (4) of the electronics and/or terminal housing (1) being at least partially covered by the overmould (17b) on its upper side. The overmould is not only provided for the stator, but is used at the same time as a connection means for connecting the electronics and/or terminal housing to the wound stator. Additional connection parts are not required as a result. The stator packet is first wound and then inserted into an injection mould with the electronics housing (1). Then, a heat-conductive, electrically insulating plastic is used to form the overmould (17b). Said overmould permanently connects the stator and the electronics and/or terminal housing (1) together to form the stator unit. As the bottom (4) of the electronics and/or terminal housing (1) is at least partially covered on the upper side by the overmould (17b), a secure interlocking connection is ensured between the electronics and/or terminal housing (1) and the stator (A).
Method for optimizing the efficiency and/or the running performance of a fan, wherein, starting from component-specific or function-specific numerical detailed models, a model and therefore data reduction (data refinement) to form component-specific or function-specific behavioural models is carried out taking at least one algorithm as a basis, wherein the reduced data in the behavioural models are coupled or combined with input and output variables in a system simulation to form a system behavioural model, and wherein the input variables and associated output variables of the fan from the system behavioural model are made available to an optimizer for selection in order to achieve optimized control of the system on the basis of boundary conditions.
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
91.
METHOD FOR OPTIMIZED OPERATION OF A FAN OR A FAN ASSEMBLY
The invention relates to a method for the optimized operation of a fan or a fan arrangement, using a digital image of the fan or fan arrangement and at least one operating parameter-specific algorithm, the data and knowledge obtained during operation being supplied to a preferably constant innovation and algorithms analysis, with the aim of generating product innovations and improved "intelligent" algorithms.
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
A method for determining operating states of a fan using a digital representation (digital twin) of the fan based on physical conditions and using at least one operating-parameter-specific algorithm comprises the following method steps: creating the digital representation of the real fan by representing the properties thereof by means of mathematical calculation models and possibly known data, creating the at least one operating-parameter-specific algorithm taking into account known relationships, characteristic curves, etc., calculating component states of the fan using the digital representation by means of virtual sensors, transmitting the component states to the algorithm which calculates operating parameters of the fan from the component states and possibly provides predictions relating to the operation of the fan.
measuredxmeasuredrrxx00) of the capacitor. An assessment unit which can carry out this method and a system which comprises this assessment unit and a circuit having at least one capacitor to be assessed are also disclosed.
G01R 31/02 - Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
94.
Fan wheel, fan, and system having at least one fan
A fan wheel for a fan is equipped with at least two fan blades with a wavy design. A fan has at least one such fan wheel. A system has at least one fan with such a fan wheel.
The invention relates to vanes for the impeller of a ventilator, in particular an axial ventilator, diagonal ventilator, or radial ventilator, comprising a waved leading edge and a waved trailing edge, wherein the waves on the leading edge have a larger wavelength than the waves on the trailing edge. The invention also relates to an impeller with corresponding vanes and to axial ventilators/diagonal ventilators and radial ventilators comprising an impeller with corresponding vanes.
Disclosed is a fan (radial or axial fan) comprising an impeller wheel and an inlet guide device in the flow path upstream of the impeller wheel, preferably upstream of the inlet region of an inlet nozzle, said inlet guide device taking the form of an inlet guide grid with ribs and/or guide vanes which are arranged and designed so that a substantially swirl-free inflow is produced and that the flow can be modified circumferentially.
A motor for a fan, a ventilator, a pump or a compressor includes integrated motor electronics and at least one sensor unit for pressure or volume flow control. The at least one sensor unit may be a module that can be plugged onto or into the integrated motor electronics or may be at least partly integrated into the motor electronics. The motor may be an electronically commutated motor. The integrated motor electronics may be configured to supply the at least one sensor unit with energy.
F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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 11/25 - Devices for sensing temperature, or actuated thereby
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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
H02K 11/33 - Drive circuits, e.g. power electronics
The invention relates to a fan module comprising at least one fan (1), possibly a nozzle plate (5) and a suspension (10). Said fan module has a device on the pressure side to reduce or suppress a backflow and to even out the air flowing out, wherein the device is designed as a mechanical backflow blocker (6), which is arranged approximately centrally in the flow path and blocks part of the flow cross section. The invention further relates to an arrangement having one or more fan modules (24) in a flow duct.
The cooling device is intended for an electric motor and has a rotor cooling flange and a stator cooling flange (2), of which one is rotatable with respect to the other. At least one of the two cooling flanges (2) is provided with cooling ribs (8) arranged distributed over its circumference. During operation of the electric motor, at least one of the two cooling flanges gives off heat to the surrounding air. At least some of the cooling ribs (8) of a heat-emitting cooling flange (2) have an undulating profile over their length. In this context, the surface area of a cooling rib (8) having an undulating profile is larger than the surface area of the associated straight reference rib.
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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 diagonal or radial fan comprises a rotating motor fan wheel and an upright guide device that in terms of flow is connected downstream of the motor fan wheel, wherein the motor fan wheel comprises a motor and an impeller with blades that is rotary driven by the motor, said blades being arranged between an impeller cover plate and an impeller base disk, wherein the guide device comprises at least one guide device cover plate and one guide device base disk, and wherein the guide device cover plate and the guide device base disk are in continuous elongation to the impeller cover plate and the impeller base disk.
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