Protection for motors in refrigerated environment

Details Protection for motors in refrigerated environment Protection for motors in refrigerated environment

F - Mech Eng,Light,Heat,Weapons

25

D

F25D 17/06 (2006.01) F25D 3/10 (2006.01) F25D 3/11 (2006.01) F25D 21/04 (2006.01) H02K 9/19 (2006.01)

Patent

CA 2153369

A protection system for electric motors in refrigerated environments, especially those environments cooled to very low temperatures, includes routing a cryogen coolant through the electric motor. A minimum flow of cryogen coolant is maintained through the motor to prevent ingress of moisture in the motor interior. The arrangement is especially useful with cryogenically cooled refrigeration systems, because the same cryogen coolant used to refrigerate the system can also be used to provide a purging flow of cryogen coolant gas through the electric motor.

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