Capacity control valve
AssigneeEagle Industry Co., Ltd.
InventorsMasahiro Hayama, Kohei Fukudome, Toshinori Kanzaki, Wataru Takahashi, Keigo Shirafuji
Life of this patent
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Abstract
A capacity control valve includes a valve housing provided with a Ps port through which a suction fluid at a suction pressure passes and a Pc port through which a control fluid at a control pressure passes; a valve body configured to close and open a communication between the Pc port and the Ps port by a driving force of a solenoid; and a pressure sensitive body that applies a biasing force to the valve body according to a surrounding fluid pressure. An accommodation chamber in which a rear side portion of the valve body is accommodated is provided with a supply passage to which suction fluid is supplied.
Claims4
A capacity control valve comprising:
- a valve housing provided with a Ps port through which a suction fluid at a suction pressure passes and a Pc port through which a control fluid at a control pressure passes;
- a valve body that forms a main valve in cooperation with a valve seat, the valve body coming into contact with and separating from the valve seat to close and open a communication between the Pc port and the Ps port;
- a pressure sensitive body disposed in a pressure sensitive chamber formed inside the valve housing;
- a movable core provided in the valve housing and configured to move in an axial direction;
- a fixed core fixed to the valve housing;
- and
- a coil provided on an outer periphery of the fixed core,
- wherein the suction fluid is supplied from the Ps port to the pressure sensitive chamber, and
- an accommodation chamber in which a rear side portion of the valve body is accommodated is provided with a supply passage to which the suction fluid is supplied;
- the valve body is a rod fixed to the movable core,
- the movable core, together with the valve body, is driven by a solenoid due to energization of the coil to open and close the communication between the Pc port and the Ps port,
- the supply passage is a communication hole that is formed in the valve housing and that is configured to communicate with the pressure sensitive chamber and the accommodation chamber,
- a sliding portion between the valve body and the valve housing is positioned between the Pc port and the accommodation chamber,
- the sliding portion is provided with at least an annular groove, and
- all of the grooves are located within the sliding portion regardless of a position of the valve body with respect to the housing.
Dependencies are inferred from the claim text.