Electric drive motor for a work apparatus

摘要

An electric drive motor for a work apparatus includes a stator having two stator poles which are at a distance from one another in the circumferential direction and have respective field windings. The motor has a rotor which rotates between the stator poles and the rotor shaft of the rotor drives a fan wheel. The cooling-air flow generated by the fan wheel enters the stator, flows therethrough and is discharged therefrom. For effective cooling, a pole intermediate space is provided between the stator poles; and, for the cooling-air flow, this space is filled by a non-magnetic guide body to provide a cooling duct delimited by the guide body and the field windings. The guide body is fastened to a support at one stator end and is inserted axially into the stator at the other end thereof.

主权项

1. An electric drive motor for a work apparatus, the electric drive motor comprising:
a stator having at least first and second stator poles; first and second electric field windings carried on corresponding ones of said stator poles; said first and second stator poles being arranged in a spaced relationship to each other in a circumferential direction and conjointly defining an intermediate pole space therebetween; a rotor having a rotor shaft and being configured to rotate between said first and said second stator poles; a fan wheel configured to be driven by said rotor shaft; said fan wheel configured to generate a cooling air flow which enters said stator, flows through said stator and is blown out of said stator; a non-magnetic guide body filling said intermediate pole space so as to cause said first and second field windings and said guide body to conjointly delimit a cooling channel for said cooling air flow; a support; and, said guide body having a first end fixed on said support and a second end axially inserted into said stator.