A SCROLL COMPRESSOR IMPROVED IN FUNCTION OF OIL CIRCULATION AND BACK PRESSURE CONTROL

摘要

A scroll compressor is provided to implement lubrication and back pressure regulation at the same time by separating coolant into oil and gas through the oil separator and then delivering the oil to the back pressure chamber and circulating the oil while controlling the back pressure with the back pressure control valve. The coolant compressed with a scroll compressing unit is sent to a discharge chamber(610). The coolant of the discharge chamber is separated into oil and gas in an oil separator(680). The gas is discharged through a coolant outlet and the oil is supplied to a back pressure chamber(BAC) through a return passage formed in a fixed scroll(500). And then, the oil returns to a housing(H) inside via a return path formed in a drive shaft(200) and a back pressure control valve(270) arranged behind the drive shaft.