| 摘要 |
A commutator motor constructed and arranged to provide cooling and removal of carbon dust produced during operation. The motor comprises a housing, a stator consisting of a plurality of laminations embedded in the housing and defining at least a pair of circumferentially spaced yoke portions and pole portions intermediate the yoke portions. The rotor is rotatably supported in the stator cavity. The yoke portions are of a predetermined configuration defining first axial channels having inlet and outlet openings to facilitate flow of cooling medium through the channels in one direction. A commutator chamber is provided at one axial end of the rotor and separated from the rotor cavity by a circumferentially extending wall. A series of second axial channels are provided outboard of the pole portions communicating with the commutator chamber at one axial end and a fan is provided at the other end of the motor to circulate a cooling medium through the second channels and commutator chamber in an axial direction opposite the direction of flow of the cooling medium through the first channels.
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