Ebm-papst Mulfingen Gmbh & Co Kg

Tobias Schmidt

Matthias Maschke

Christian Haag

Sven Beck

Sebastian Hoss

Friedrich Schaffert

Wolfgang Buerckert

Wolfgang BÜRCKERT

A fan has an external rotor motor with a motor section and an electronics section. The motor section and the electronics section are arranged axially adjacent to each other along the axis of rotation. The fan, when operated as intended, generates, via the fan wheel, a pressure difference between its suction side, which is preferably associated with the rotor, and its pressure side, which is preferably associated with the motor electronics. A continuous cooling duct runs within the external rotor motor from a pressure-side inflow opening, at least along sections of the rotor, to a suction-side outflow opening. An exclusively passive cooling air flow through the cooling duct can be generated in operation by the pressure difference generated by the fan wheel.

Fan having an external rotor motor and cooling duct for cooling the motor electronics and motor drive components

A magnetic element holder () of an electric motor has a carrier formed as a frame structure. The carrier has at least one receiving section () to receive at least one magnetic element (). The carrier is configured with a holding device () for positionally fixed holding the at least one magnetic element () inside the at least one receiving section (). The magnetic element holder () is configured to be fastened to a rotor () of an electric motor.

Magnetic element holding device

The present disclosure concerns a fastening strut for a fan guard with at least one first leg extending in a longitudinal direction, configured so as to reach across several cage bars of the fan guard, wherein the at least one first leg comprises a free lengthwise end, and in the region of the free lengthwise end of the at least one first leg a cube-shaped or cuboidal fastening element is secured laterally to the at least one first leg by integral bonding in a transverse direction running perpendicular to the longitudinal direction.

Fastening strut for a fan guard

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Ahorn-Schillingsstadt, Germany

Tobias Schmidt