Internal thermal management for motor driven machinery
First Claim
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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.
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Abstract
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.
60 Citations
17 Claims
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1. A method of cooling a motor driven assembly, comprising the steps of:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17)
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9. A method of cooling a motor drive assembly, comprising the steps of:
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(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 a fin portion extending from said base portion and said fin portion includes a first fin and a second fin circumferentially offset from said first fin forming a channel and a third fin circumferentially and axially offset from said first fin and said second fin and circumferentially aligned with said channel (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.
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14. A method of cooling a motor driven assembly, comprising the steps of:
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(1) circulating a first fluid through a first cooling flow passage between a motor shaft and a motor rotor of a motor, a plurality of fins disposed at least partially within said first cooling flow passage, the plurality of fins including a first fin and a second fin that is circumferentially offset from a first fin, wherein the plurality of fins extend inward from a base to a free end, wherein said first fin is circumferentially offset from said second fin forming a channel and a third fin is circumferentially and axially offset from said first fin and said second fin and axially aligned with said channel; (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 monitor 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.
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Specification