Internal thermal management for motor driven machinery

摘要

A motor driven assembly includes a motor having a motor inlet and a motor outlet, a shaft, and a rotor spaced radially outwards from the shaft. A cooling flow passage is located between the shaft and the rotor. The cooling flow passage fluidly connects the motor inlet and the motor outlet. A compressor is in fluid communication with the motor outlet. The compressor includes a compressor outlet that is in fluid communication with the motor inlet.

主权项

1. A method of cooling a motor driven assembly, comprising the steps of:
(1) circulating a first fluid through a first cooling flow passage between a motor shaft and a motor rotor of a motor, wherein a sleeve is disposed at least partially within said first cooling flow passage, said sleeve having a base portion and plurality of spaced apart fin portions extending from said base portion, the plurality of spaced apart fin portions are each spaced from said shaft, said first cooling flow passage comprising a first sub-passage between said plurality of spaced apart fin portion and a second sub-passage between said plurality of spaced apart fin portions and said shaft; (2) circulating a second fluid through a second cooling flow passage in the motor; (3) circulating at least one of the first fluid or the second fluid from the motor into a compressor; and (4) circulating the at least one of the first fluid or the second fluid from the compressor into a heat exchanger.