Patent ID: 6662581
Filing Date: 2003-12-16
Classification: F04B,F25B

Abstract:
A variable displacement compressor including a wobble member arranged in a pressure-regulating chamber formed airtightly, such that an inclination angle of the wobble member can be changed with respect to a rotational shaft, and driven by rotation of the rotational shaft for wobbling motion, and pistons each connected to the wobble member for performing reciprocating motion in a direction parallel to the rotational shaft in accordance with the wobbling motion of the wobble member, to thereby draw refrigerant from a suction chamber into a cylinder, compress the refrigerant, and deliver the compressed refrigerant from the cylinder to a discharge chamber,characterized in that a flow rate of the refrigerant flowing in a first refrigerant passage extending from the discharge chamber to the pressure-regulating chamber and a flow rate of the refrigerant flowing in a second refrigerant passage extending from the pressure-regulating chamber to the suction chamber are controlled in an interlocked fashion such that the first refrigerant passage and the second refrigerant passage are opened and closed, based on a change in a differential pressure between pressure in the suction chamber and pressure in the discharge chamber.