Pressure control valve

Details Pressure control valve Pressure control valve

2007-04-03

2009-11-24

Jones, Melvin (Department: 3744)

Refrigeration

Refrigeration producer

Evaporator, e.g., heat exchanger

C062S511000

Reexamination Certificate

active

07621151

ABSTRACT:
A pressure control valve has a temperature sensing portion. The temperature sensing portion includes a diaphragm and a cap member. A peripheral portion of the diaphragm is fixed to a peripheral portion of the cap member. One surface of the diaphragm and the cap member define a sealed space in which gas is airtightly filled. The other surface of the diaphragm is fixed to one end of the valve body, and subjected to fluid in a fluid chamber. A change of the temperature of the fluid changes a volume of the gas in the sealed space to displace the diaphragm and the valve body to open and close a valve port. A reinforcement member reinforces a fixture of the cap member to the diaphragm.

REFERENCES:
patent: 3581759 (1971-06-01), Veale
patent: 4501290 (1985-02-01), Sturman et al.
patent: 6189326 (2001-02-01), Tomatsu et al.
patent: 2006/0150650 (2006-07-01), Murase et al.
patent: 2002-013844 (2002-01-01), None

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