Patent ID: 6485268
Filing Date: 2002-11-26
Classification: F04C

Abstract:
A scroll compressor comprising:a compressor pump unit having a first scroll member having a base and generally spiral wrap extending from said base, a second scroll member having a base and a generally spiral wrap extending from said base, said spiral wraps of said first and second scroll members interfitting to define compression chambers, and a crankcase for supporting said second scroll member; a shaft for driving said second scroll member to orbit relative to said first scroll member, and compression chambers between said wraps of said first and second scroll member decreasing in size as said second scroll member orbits to compress an entrapped refrigerant; a motor for driving a shaft to cause said second scroll member to orbit, said motor having a rotor and a stator, and a motor protector associated with said motor stator, said motor protector being operable to stop further operation of said motor in the event it senses an undesired condition; and an oil return passage for passing lubricant over a heating portion of said compressor pump unit, said oil return passage being positioned to return oil from said heating portion of said compressor pump unit onto said motor protector, said passage including a portion in said first scroll member base.