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Two phase gap cooling of an electrical machine

United States Patent

9,461,523
October 4, 2016
View the Complete Patent at the US Patent & Trademark Office
An electro-dynamic machine has a rotor and stator with a gap therebetween. The machine has a frame defining a hollow interior with end cavities on axially opposite ends of the frame. A gas circulating system has an inlet that supplies high pressure gas to the frame interior and an outlet to collect gas passing therethrough. A liquid coolant circulating system has an inlet that supplies coolant to the frame interior and an outlet that collects coolant passing therethrough. The coolant inlet and gas inlet are generally located on the frame in a manner to allow coolant from the coolant inlet to flow with gas from the gas inlet to the gap. The coolant outlet and gas outlet are generally located on the frame in a manner to allow the coolant to be separated from the gas with the separated coolant and gas collected for circulation through their respective circulating systems.
Shoykhet; Boris A. (Beachwood, OH)
Baldor Electric Company (Fort Smith, AR)
14/ 104,724
20150171707
December 12, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under agreement No. DE-AR0000191 awarded by the Department of Energy. The government has certain rights in this invention.