Expansion valve

Details Expansion valve Expansion valve

2007-11-27

2007-11-27

Tyler, Cheryl J. (Department: 3744)

Automatic temperature and humidity regulation

Thermostatic

With pressure control

C236S09200D, C062S222000

Reexamination Certificate

active

10797106

ABSTRACT:
The body of a valve has an orifice that internally connects a high-pressure passage through which a refrigerant flows in and a low-pressure passage through which the refrigerant flows out. The valve includes a valve plug for adjusting the flow rate of the refrigerant flowing in the orifice, an operating rod for moving the valve plug in a valve opening direction, and a temperature sensing drive unit for driving the operating rod. A support ring for constraining the spherical valve plug is located on the upper-stream side of the high-pressure passage with respect to the orifice. The support ring is formed of a circular annular portion capable of elastic deformation and vibration-proof springs. The springs support the valve plug.

REFERENCES:
patent: 4542852 (1985-09-01), Orth et al.
patent: 6029694 (2000-02-01), Schwegler et al.
patent: 6702188 (2004-03-01), Yano et al.
patent: 2002/0100812 (2002-08-01), Sudo et al.
patent: 2002/0185621 (2002-12-01), Kobayashi et al.
patent: 1397778 (2003-02-01), None
patent: 1 275 916 (2003-01-01), None
patent: 08-145505 (1996-06-01), None
patent: 09-222268 (1997-08-01), None
patent: 2001-50422 (2001-02-01), None
patent: 2001-50617 (2001-02-01), None
European Search Report, Application No./Patent No. 04005534.5-2301, dated Feb. 3, 2006.

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