Electromagnetic valve

Details Electromagnetic valve Electromagnetic valve

1998-05-13

2000-11-14

Freay, Charles G.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

251 615, 25112918, F04B 126

Patent

active

061461067

ABSTRACT:
A control valve used in a variable displacement compressor. The valve includes a valve chamber having a valve hole. A valve body is accommodated in the valve chamber for selectively closing and opening the valve hole. An opening spring urges the valve body in a direction opening the valve hole. An actuator generates force in a direction closing the valve hole. A solenoid rod transmits the force of the actuator to the valve body. A pressure sensing chamber is defined independently from the valve chamber to receive refrigerant from a suction passage. A pressure sensing member is located in the sensing chamber for sensing the pressure in the sensing chamber. A pressure sensing rod transmits the pressure sensed by the sensing member to the valve body. A compression spring, a cap and stoppers maintain proper alignment of the pressure sensing member. The valve body is moved based on the refrigerant pressure sensed by the sensing member, the force of the spring and on the force of the actuator.

REFERENCES:
patent: 5145326 (1992-09-01), Kimura et al.
patent: 5531572 (1996-07-01), Kimura et al.
patent: 5842835 (1998-12-01), Kawaguchi et al.
patent: 5890876 (1999-04-01), Suito et al.
patent: 5964578 (1999-10-01), Suito et al.

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