Compressor

摘要

A compressor having a crank chamber (15) in which a large amount of lubricating oil is constantly maintained. The compressor includes a pressurizing passage (48) through which refrigerant gas flows from a discharge chamber (39) to the crank chamber (15). A displacement control valve (49) varies the displacement of the compressor by adjusting the flow in the pressurizing passage (48) thereby changing the pressure in the crank chamber (15) and altering the inclination of a swash plate (21). The compressor further includes a bleeding passage (47). An oil separator (61) is arranged in the bleeding passage (47) to separate lubricating oil from the refrigerant gas flowing through the bleeding passage (47). The oil separator (61) and the crank chamber (15) are connected to each other by a recovery passage (67), through which the separated lubricating oil is returned to the crank chamber (15), and a pressurizing passage (48). A venturi tube (63) is employed to help transfer oil from the oil separator to the crank chamber (15). <IMAGE>