ZIEHL-ABEGG SE

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.

The present disclosure relates to an outlet guide vane device for a ventilator which has at least one impeller having impeller blades and the device includes 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 present disclosure additionally relates to a ventilator comprising a corresponding outlet guide vane device.

A fan with an impeller and an electric motor, wherein the electric motor includes 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, in an embodiment 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 disclosure relates to a corresponding cooling structure for a fan.

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.

A stator of an electric machine has a ring region from which teeth protrude. Each tooth has an arm that extends from the ring region, has a web running transversely to the arm at the free end and supports at least one winding. The winding has at least one coil wound by a winding wire and is accommodated in a winding space which extends from the ring region. The winding space is divided by at least one separating web into successive winding sections which are provided on the arm. Using the separating web, the respective winding space section can be adapted to the wire diameter and to the number of turns in such a way that the start of the wire and the end of the wire can be provided in the radially inner ring region of the stator.

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.

For an electric motor which has a stator which is set up to generate a rotating magnetic field, and which also has a rotor which is mounted rotatably about a rotation axis and which carries a number of permanent magnets, it is provided, in order to increase the electrical efficiency but also to reduce vibrations during operation, that a stator winding is inserted into slots of the stator and energized with a multiphase current in such a way that the stator forms a magnetic field which is characterized by a number N U of primary areas and that at most five of the slots of the stator are used per primary area. Preferably at least seven, particularly preferably at least eight or even at least ten primary areas can be formable or formed along the circumference of the stator when the stator winding is energized accordingly.

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.