Abstract: A valve housing of the control valve has a communication passage communicating a suction port of the compressor with a crank chamber of the compressor. A main valve is provided in the valve housing for opening and closing the communication passage. A spring member resiliently biases the main valve toward its closed position. A pressure actuated unit moves the main valve toward the open position by receiving a suction pressure of the compressor. A flow adjustment valve is disposed in the valve housing for adjusting an open degree of a leak passage and receives the discharge pressure exerting a force on the flow adjustment valve toward its closed position. The flow adjustment valve increases a leak flow rate of a fluid flowing from a discharge port of the compressor to a crank chamber through a leak passage when the compressor provides a lower discharge pressure. A correction spring is disposed between the main valve and the flow adjustment valve.

Abstract: A valve housing has a communication passage communicating a suction port of the compressor with a crank chamber of the compressor. A valve element opens and closes the communication passage, and a spring member resiliently biases the valve element toward the closed position. A pressure actuated unit moves the valve element toward the open position by a suction pressure of the compressor. The spring member includes a spring made of a temperature responsive material. The spring decreases in its resilient force in an opening direction of the valve element with increase of an outer-air temperature. The spring member has a primary spring made of an ordinary resilient material for resiliently biasing the valve element toward the closed position and a correction spring made of a material having a temperature positive characteristic. The correction spring provides a correction spring force smaller than a primary force of the primary spring in the opposite direction to the primary force.

Abstract: A bellows-type pressure responsive valve comprising bellows 66 of a closed structure as a pressure sensing element adapted to vary an opening amount of the valve by transmitting expansions and contractions of the bellows 66 to a valve body 61 by means of a valve rod 65 which is supported on a valve housing 51 so as to move in a valve lifting direction, characterized in that the bellows 66 and the valve rod 65 are spherically connected by means of a spherical coupling structure which is incorporated at a connecting portion of the bellows 66 and the valve rod 65 and composed of a ball 77 which is rotatably disposed coaxially with the valve rod 65, and a spherical recess 78 which is formed at a closed end face 67a of a bellows body 67 of the bellows 66 at a central position thereof. With this structure, centripetal motions of the bellows and the valve rod are automatically effected by means of the spherical coupling between the bellows and the valve rod.

Abstract: An electromagnetic control valve is provided. The control stability of the electromagnetic control valve is improved because: (1) one end of the guide pin is forced into and then secured in a hole formed in the center of the coil guide so that the plunger moves in the center of the suction portion; (2) one end of the connecting rod is forced into and then secured in a hole formed in the center of the plunger, and a guide portion for guiding the connecting rod is provided in the center of the upper main body; or (3) the connecting rod is forced into and then secured in a hole formed in the center of the plunger, and a first guide portion for guiding the connecting rod is provided at the lower end of the coil guide and/or a second guide portion for guiding the connecting rod is provided at the lower end of the upper main body.