Liquid chiller with enhanced motor cooling and lubrication

F - Mech Eng,Light,Heat,Weapons – 25 – B

Patent

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F25B 31/00 (2006.01) F04D 29/06 (2006.01) F04D 29/58 (2006.01)

Patent

CA 2342908

An enhanced motor cooling and lubrication system for a liquid chiller (10) includes a liquid refrigerant cooled compressor drive motor (46), wherein the refrigerant used to cool the drive motor is returned to the chiller's condenser (14), and apparatus to better facilitate the return of oil carried to the compressor entrained in the suction gas flow stream back to the chiller's oil supply tank (62).

Cette invention concerne un système amélioré de refroidissement et de lubrification du moteur pour un dispositif de réfrigération de liquide (10), lequel système comprend un moteur d'entraînement (46) de compresseur refroidi par un réfrigérant liquide, le réfrigérant servant à refroidir le moteur d'entraînement étant renvoyé vers le condenseur (14) du dispositif de réfrigération. Ce système comprend également un appareil permettant de faciliter le retour de l'huile, qui est envoyée vers le compresseur et entraînée dans le flux des gaz d'aspiration, vers le réservoir d'alimentation en huile (62) du dispositif de réfrigération.

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