Abstract: A variable displacement compressor for an air conditioning system includes a suction throttle valve. The suction throttle valve includes a housing with a cavity formed therein. A first piston reciprocatingly disposed in the cavity is configured to cause a variable restriction of a flow of refrigerant through a suction inlet formed in the housing. The suction inlet provides fluid communication between a suction port and the cavity formed in the housing. The refrigerant flows through the suction port in a direction that is not parallel to a direction the piston reciprocates within the cavity. The suction throttle valve is configured to increase the restriction in the suction inlet when a crankcase pressure associated with the variable displacement compression is increased relative to an external suction pressure of the refrigerant entering the suction throttle valve.

Abstract: A variable displacement compressor for an air conditioning system includes a suction throttle valve. The suction throttle valve includes a housing with a cavity formed therein. A first piston reciprocatingly disposed in the cavity is configured to cause a variable restriction of a flow of refrigerant through a suction inlet formed in the housing. The suction inlet provides fluid communication between a suction port and the cavity formed in the housing. The refrigerant flows through the suction port in a direction that is not parallel to a direction the piston reciprocates within the cavity. The suction throttle valve is configured to increase the restriction in the suction inlet when a crankcase pressure associated with the variable displacement compression is increased relative to an external suction pressure of the refrigerant entering the suction throttle valve.

Abstract: An oil separator for a fluid compressor is disclosed. The oil separator includes a housing having a generally cylindrical cavity formed therein. A wall is disposed in the cavity to form an inlet side of the cavity and an outlet side of the cavity. A conduit extends through the wall and provides a fluid communication path between the inlet side and the outlet side of the cavity. The inlet side of the cavity facilitates the separation of an oil from a fluid, wherein the separated oil is returned to an oil reservoir formed in the housing, and the fluid is provided substantially free of oil to an associated refrigeration circuit.