Patent ID: 9091266
Filing Date: 2015-07-28
Classification: F04C

Abstract:
1. A scroll compressor comprising: a crankshaft to mutually engage a stationary scroll having a whirlpool shape and an orbiting scroll, the crankshaft driving the orbiting scroll; a suction chamber and a compression chamber formed between the orbiting scroll and the stationary scroll by orbital motion of the orbiting scroll accompanying a rotation of the crankshaft; a back pressure chamber included on a back surface of the orbiting scroll to apply a pressing force that presses the stationary scroll against the orbiting scroll by a pressure that is higher than a suction chamber pressure; a communication path formed in the stationary scroll that connects the suction chamber or the compression chamber and the back pressure chamber; and a back pressure control means for opening and closing the communication path by way of a pressure differential along the communication path, wherein a base plate of the orbiting scroll always blocks part of a back pressure chamber side opening of the inlet communication path on the back pressure chamber side.