Scroll compressor with back pressure chamber

摘要

An upper back pressure type scroll compressor (100) is provided having a back pressure chamber. The scroll compressor (100) may include a casing (110), a discharge cover (102), a main frame (120), a first scroll (130) supported by the main frame (120), and a second scroll (140) forming a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the first scroll (130). The scroll compressor (100) may also include a back pressure plate (150) coupled to the second scroll (140). The back pressure plate (150) may include a cavity with which the intermediate pressure chamber of the second scroll (140) communicates. The scroll compressor (100) may further include a floating plate (160) movably coupled to the back pressure plate (150) so as to seal an upper portion of the cavity.