Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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).

Abstract: A fan is described, with the aid of which a volume flow and/or a mass flow of a medium moved by the fan (1) can be determined. This fan comprises an electric motor (2) and an impeller (3) driven by the electric motor (2), wherein the impeller (3) moves a gaseous medium in a media flow from an inflow side (5) to an outflow side (7). The fan additionally comprises a pressure sensor system, a speed ascertainment system, and an evaluation unit. The pressure sensor system is designed to ascertain an actual pressure difference (?p*) between a first region (10) and a second region (13), wherein the first region (10) and/or the second region (13) is/are formed in the electric motor (2), wherein a pressure (pA) prevails in the first region (10), which corresponds to a pressure (p1) present on the inflow side, wherein a pressure (pB) prevails in the second region (13), which corresponds to a pressure (p2) present on the outflow side.

Abstract: 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.

Abstract: 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.

Abstract: A method is used to identify impending or previously occurring condensation on/in electric motors, in particular on/in electric motors as a component of fans or fan groups. It includes 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 respective component temperature with the respective dew point temperature and concluding a formation of condensation has already taken place or is imminent when the component temperature approaches the dew point temperature or when the dew point temperature is undershot. A further method serves to prevent the formation of condensate and/or to eliminate/remove condensate on/in electric motors, in particular on/in electric motors as a component of fans or fan groups.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.