Patent ID: 9011109
Filing Date: 2015-04-21
Classification: F04B

Abstract:
1. A variable capacity compressor including a piston which compresses refrigerant gas containing lubrication oil drawn from a suction chamber to discharge the compressed refrigerant gas to a discharge chamber, a crank chamber disposed in the rear of the piston, a first communication passage which allows the discharge chamber and the crank chamber to communicate with each other, a second communication passage which allows the crank chamber and the suction chamber to communicate with each other, a control valve mounted on the first communication passage, and an orifice mounted on the second communication passage, in which a stroke of the piston is changed by controlling the pressure of the crank chamber with the control valve, the variable capacity compressor comprising: an oil storage chamber extended at a downstream of the control valve on the first communication passage to separate oil and store the separated oil; and an oil return passage formed separately from the first communication passage running from the oil storage chamber to the crank chamber to return the oil stored in the oil storage chamber to the crank chamber.