BEARING DEVICE FOR ENCLOSED TYPE SCROLL COMPRESSOR

摘要

The compressor comprises a sealed. Chamber and a compressor section including a fixed scroll member and an orbiting scroll member located in an upper portion of the sealed chamber. An electric motor section is located in a lower portion of the sealed chamber. A crankshaft including a crank section is connected to the orbiting scroll member and a shaft section supported by a frame. An intermediate pressure chamber is defined between the orbiting scroll member and the frame and has a pressure intermediate between a discharge pressure and a suction pressure. A bearing device comprises a roller bearing located on the frame in a position close to the crank section of the crankshaft for supporting the shaft section. A plain bearing is located on the frame in a position remote from the crank section for supporting the shaft section.