Control valve for variable displacement compressor

Details Control valve for variable displacement compressor Control valve for variable displacement compressor

1998-08-06

2000-05-09

Walberg, Teresa

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

251 64, 251337, F04B 126, F16K 3100

Patent

active

060595388

ABSTRACT:
An improved displacement control valve incorporated in a variable displacement compressor. The control valve is installed in an accommodating hole formed in a rear housing of the compressor. A cap is attached to a housing body of the control valve. A pressure sensing chamber is defined between the cap and the housing body. A pressure sensing member, or bellows, is located in the pressure sensing chamber. The bellows moves a valve body in accordance with pressure introduced into the pressure sensing chamber. A tubular protector, which is made of an elastic material, is attached to the cap. The control valve is installed in the rear housing by inserting the valve, cap first, into the accommodating hole. During this installation, the protector prevents the cap from directly contacting the housing or inner wall of the accommodating hole. The cap is therefore not deformed. The performance of the control valve is therefore improved.

REFERENCES:
patent: 4723891 (1988-02-01), Takenaka et al.
patent: 4875832 (1989-10-01), Suzuki et al.
patent: 5518374 (1996-05-01), Ota et al.
patent: 5620310 (1997-04-01), Takenaka et al.
patent: 5762476 (1998-06-01), Ota et al.
patent: 5924443 (1999-06-01), Wohlfahrt
patent: 5967487 (1999-10-01), Cook et al.
patent: 5975859 (1999-11-01), Kawaguchi et al.

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