To prevent operation failure caused by adhesion of a lubricating oil of a control valve for controlling a discharge displacement. A partition member 150 is provided to partition a suction chamber 141 into: a first space 141a, to which a suction passage is connected, and in which a lubricating oil is separated from a refrigerant gas and is stored; and a second space 141b, to which a suction hole 103a is connected, and to which the refrigerant gas from which the lubricating oil that has been separated is introduced via a communication hole 150a, and it is configured so that a pressure in the second space 141b can be introduced to a control valve 300 via a pressure introducing passage 147.