| 摘要 |
Disclosed is a variable displacement compressor provided with a displacement control valve capable of easily adjusting an optimum level the sensitivity to a rise in the pressure in a crank chamber. The variable displacement compressor is configured in such a manner that the stroke of a piston is adjusted by changing the pressure in the crank chamber, the pressure in the crank chamber being changed by adjusting the degree of opening of the displacement control valve for opening and closing a path for communicating between a discharge chamber and the crank chamber, wherein the displacement control valve is provided with a valve chamber communicating with the discharge chamber, a valve hole, a valve element for opening and closing the valve hole, a pressure sensing chamber communicating with a suction chamber, a pressure sensing member disposed in the pressure sensing chamber, and a pressure sensing rod having one end connected to the pressure sensing member and the other end connected to the valve element and driving the valve element in response to displacement of the pressure sensing member. The pressure in the crank chamber acts on the valve element from the valve hole side in the direction of opening of the valve element, and acts on the pressure sensing rod from the valve hole side in the direction of closing of the valve element. That area (Sr) of the pressure sensing rod which receives the pressure in the crank chamber is set to be greater than that area (Sv) of the valve element which receives the pressure in the crank chamber.
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