Ventilation system for an AC machine having overhanging salient

Details Ventilation system for an AC machine having overhanging salient Ventilation system for an AC machine having overhanging salient

1997-03-28

1998-05-26

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 52, 310 59, 310 60S, 310 61, 310 62, 310157, H02K 900

Patent

active

057570949

ABSTRACT:
A method of improving the airflow through a low to medium speed salient pole dynamoelectric machine DEM is disclosed. The rotor rim on which the salient poles are mounted is shortened in comparison to prior art structures so that the ends of the salient poles (and the rotor windings) protrude a substantial distance beyond the edge of the rim. A stationary or rotating shield is placed in juxtaposed relationship with the rotating ends of the salient poles to provide an enclosure so that the protruding ends of the salient poles can function as a crude radial fan.

REFERENCES:
patent: 4031422 (1977-06-01), Armor et al.
patent: 4182966 (1980-01-01), Mishra et al.
patent: 4233533 (1980-11-01), Lown
patent: 4270064 (1981-05-01), Glandorf et al.
patent: 4499660 (1985-02-01), Lenz
patent: 5134329 (1992-07-01), Lang
patent: 5306972 (1994-04-01), Hokanson et al.
patent: 5605058 (1997-02-01), Ferguson et al.

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