Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1979-03-29
1981-05-05
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 62, 310 64, 310154, H02K 900
Patent
active
042661528
ABSTRACT:
An electric motor, such as a rare-earth permanent magnet single airgap direct current motor is provided with generally longitudinally extensive heat transfer or cooling means comprising heat receptor elements adjacent but minimally spaced apart from and parallel the armature. These heat transfer elements are then cooled, as by being thermally connected with external heat discharging or dissipating structure to transfer the heat away from the motor. In one embodiment or modification the heat transfer elements project inwardly from a heat conductive end cap provided on its outer surface with heat radiating fins. In another embodiment or modification the heat transfer elements are hollow and a coolant, such as air, is circulated therethrough. The heat receptor elements may be provided with fins to increase their surface area, with the fins preferably facing the armature structure. The receptor elements are also preferably substantially coextensive with the active portion or windings of the armature. A stirring fan may also be provided mounted to the armature to provide circulation of air within the motor housing, around the armature and heat transfer elements.
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Herr John A.
Jaffe Wolfgang
Bell Edward L.
Lackenbach Elliot A.
Skudy R.
Smith Robert E.
The Singer Company
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