Patent ID: 6065297
Filing Date: 2000-05-23
Classification: F04D,F25B

Abstract:
A liquid chiller comprising:a compressor;a motor for driving said compressor;a housing, said motor being disposed in said housing;an evaporator, said evaporator being connected for refrigerant flow to said compressor;an oil supply tank, said oil supply tank being physically disposed below said compressor;pump apparatus, said pump apparatus delivering oil from said oil supply tank to said compressor for lubrication purposes and liquid refrigerant to said motor for motor cooling purposes; anda condenser, said condenser receiving refrigerant from said compressor, supplying refrigerant to said evaporator, being the source for liquid refrigerant that is delivered by said pump apparatus to said motor for cooling purposes and being the location to which at least a major portion of the refrigerant used in the cooling of said motor is returned subsequent to cooling said motor.