Shroud for dynamoelectric machine

Details Shroud for dynamoelectric machine Shroud for dynamoelectric machine

1991-05-06

1991-11-12

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 52, 310 58, 310 59, H02K 904, H02K 900

Patent

active

050650580

ABSTRACT:
A ventilation cooling system for a dynamoelectric machine is disclosed, which provides improved cooling efficiency and reduction in windage loss. A first stream of cooling gas is directed into the spider of the machine and transversely through ventilation ducts in the rotor, across the gap, then through corresponding ducts in the stator. A further stream of cooling gas is drawn in between the spider and a shroud which extends inwardly transversely from the stator. This further stream is directed downwardly between the poles of the rotor and then transversely through the gap and stator in conjunction with the first stream.

REFERENCES:
patent: 3558557 (1971-06-01), Kilgore et al.
patent: 4182966 (1980-01-01), Mishra et al.
patent: 4233533 (1980-11-01), Lown

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