Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-09-21
2011-11-22
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S052000
Reexamination Certificate
active
08063521
ABSTRACT:
An electrical machine having a centrifugal compressor for producing a fluid flow to cool one or more portions thereof. In one embodiment, the fluid is separated into separate flows, each of the flows flowing through only a portion of an annular gap formed between a rotor and stator of the electrical machine. According to some embodiments, the centrifugal compressor pushes a fluid through the electrical machine, whereas, in other embodiments, the centrifugal compressor pulls the fluid through the electrical machine. The centrifugal compressor includes an impeller that is attached to a shaft of the rotor. According to other embodiments, the electrical machine may include longitudinal channels formed between a housing of the electrical machine and the stator. A first flow of the fluid travels through the annular gap, and a second flow travels through the longitudinal channels. The electrical machine may also include a damper disposed in the longitudinal channels.
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Calnetix, Inc.
Fish & Richardson P.C.
Lam Thanh
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