Patent ID: 9581150
Date: 2017-02-28
CPC Classifications: F04B

Claim:
1. A variable displacement swash plate type compressor comprising: a housing having a crank chamber; a swash plate accommodated in the crank chamber, wherein the swash plate receives a drive force from a rotary shaft to rotate and is capable of changing its inclination angle relative to the rotary shaft; a piston engaged with the swash plate; a movable body, which is coupled to the swash plate and changes the inclination angle of the swash plate; a control pressure chamber defined in the housing by the movable body, wherein pressure in the control pressure chamber is changed by introducing control gas therein so that the movable body is moved in the axial direction of the rotary shaft; and a displacement control valve that controls the pressure in the control pressure chamber, wherein the piston is reciprocated by a stroke that corresponds to the inclination angle of the swash plate, the displacement control valve includes: the first valve body is in an open state when a current supply to the electromagnetic solenoid is stopped and the pressure in the suction pressure zone is less than a threshold value, and the second valve body closes when a current is supplied to the electromagnetic solenoid and opens when the current supply to the electromagnetic solenoid is stopped and the pressure in the suction pressure zone is greater than or equal to the threshold value.