SCROLL COMPRESSOR

摘要

PURPOSE: A scroll compressor is provided to maintain a pressure of a back pressure chamber to an optimal pressure in a whole pressure zone of a compression chamber by including a back pressure chamber pressure control tool which controls a pressure of a back pressure chamber by interconnecting with a pressure of an ejection chamber. CONSTITUTION: A scroll compressor comprises a housing (10), a fixed scroll (31), a rolling scroll (32), an ejection chamber (70), and a back pressure chamber (80). The housing accommodates a driving unit (20) in which a rotatory power is generated. In the housing, a suction chamber (50) inhaling a refrigerant is formed in an inside. The fixed scroll is fixed within the housing. While the rolling scroll rotatively moves by the driving unit, and a compression camber (60) is formed by engaging with the fixed scroll. The ejection room discharges the refrigerant compressed in the compression chamber. The back pressure chamber adds a pressure in order to stick the rolling scroll to the fixed scroll. A back pressure chamber pressure control tool (100) is installed inside the housing. The back pressure chamber pressure control tool forms a pressure of the back pressure chamber by revolving the refrigerant of the ejection chamber to the back pressure chamber. The back pressure chamber pressure control tool controls the pressure of the back pressure chamber by interconnecting with the pressure of the ejection chamber.