Patent ID: 6210120
Filing Date: 2001-04-03
Classification: F04C

Abstract:
A compressor comprising:a motor for driving a compressor element;a protection device for said motor, said rotation device being actuated if a predetermined temperature is exceeded at said motor;a housing for enclosing said motor, said housing defining a housing chamber housing said motor;a compression chamber for compressing a refrigerant, and said refrigerant passing through said housing chamber to said compression chamber, such that said refrigerant cools said motor; anda vent for selectively communicating a fluid directly from an intermediate pressure portion of said compression chamber to said housing chamber, if conditions in a chamber intermediate a suction chamber and a discharge port occur because of a loss of charge in a system associated with said compressor, said vent allowing gas at an elevated temperature to move into said housing chamber and contact said motor, and actuate said protection device.