Ebm-papst Mulfingen Gmbh & Co Kg

Reinhard Stillger

Dieter Best

Helmut Lipp

Jens Krotsch

Christian Hammel

Martin Baer

Christian Pfaff

Friedrich Schaffert

Tobias Ehmann

Martin Buerkert

Martin Baun

Erich Fiedler

Mark Heinze

Bernhard Bamberger

Reinhold Gerner

Birgit Brausch

A rotating electric machine () having a stator () in a housing () and a rotor () supported by a shaft (). The housing () circumferential wall () and first and second axially opposing end walls () support bearing flanges with bearings () for the shaft (). Two cooling fan impellers () are connected to the shaft (). An inner cooling fan impeller () positioned inside the housing () generates an inner cooling air circuit (A) inside the housing (). An outer cooling fan impeller () provided outside the housing (), generates an outer cooling air flow (B). The first end wall () is formed with a thermal conductivity of at least a specified value and has an outer cooling rib geometry () on its outer side facing the outer cooling fan impeller (), and an inner cooling rib geometry () on its opposing inner side.

Rotating electrical machine

The present invention provides a high-pressure blower comprising a fan arrangement which includes a fan, and a fan housing for conveying working air. An electromotor drives the fan via a motor shaft to provide motor self-ventilation by generating a cooling air stream flowing through the motor due to a cooling wheel driven by the rotor. A wall section separates the interior space of the fan housing accommodating the fan airtight from the interior space of the blower accommodating the electromotor so that the cooling air stream flowing through the electromotor is separated and independent of the air flow of the working air conveyed to the fan.

Cooling arrangement for an electromotor

Growing community of inventors

Öhringen, Germany

Reinhard Stillger