Patent ID: 6491500
Filing Date: 2002-12-10
Classification: F04C

Abstract:
A scroll compressor comprising:a first scroll member having a base and a generally spiral wrap extending from its said base; a second scroll member having a base and a generally spiral wrap extending from its said base, said spiral wrap of said first and second scroll members interfitting to define compression chambers, said second scroll member being driven through a shaft by an electric motor to orbit relative to said first scroll member; a discharge port extending through said base of said first scroll member to a discharge pressure chamber; a motor protector mounted remotely from said motor, and sealed from said discharge pressure chamber operable to stop operation of said motor if heat conditions adjacent said motor protector indicate an anomaly, or if electrical connections passing through said motor protector indicate an anomaly; and a pressure relief valve positioned to open when the pressure differential between said discharge chamber and a suction chamber exceeds a predetermined amount, said pressure relief valve being operable to pass refrigerant from said discharge chamber over said motor protector in the event that said pressure differential exceeds said predetermined amount.