Expansion valve having solenoid relief valve

Details Expansion valve having solenoid relief valve Expansion valve having solenoid relief valve

2007-11-27

2007-11-27

Ali, Mohammad M. (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S527000, C236S09200D

Reexamination Certificate

active

10973247

ABSTRACT:
An expansion valve has a solenoid relief valve equipped in an air conditioner for decompressing and expands a refrigerant and supplies the same to an evaporator. A high-pressure refrigerant from a compressor enters a valve chamber. The refrigerant traveling towards the evaporator flows through a first passage. The refrigerant returning from the evaporator toward the compressor flows through a second passage. A valve seat is disposed between the valve chamber and the first passage. A valve body has a refrigerant chamber disposed in parallel to the valve seat and communicates the valve chamber and the first passage. A valve device is capable of coming into contact with and separating from the valve seat. A power element drives the valve device. A solenoid relief valve is disposed between the refrigerant chamber and the first passage.

REFERENCES:
patent: 4073464 (1978-02-01), Hansen et al.
patent: 5588590 (1996-12-01), Sakakibara et al.
patent: 6085531 (2000-07-01), Numoto et al.
patent: 6892953 (2005-05-01), Matsuda et al.
patent: 1125255 (2003-10-01), None
patent: 11-173705 (1999-07-01), None
Mahumoud Ghodbane, Ph. D. et al., “R-152a Mobile A/C with directed Relief Safety System,” SAE Automotive Alternate Refrigeration Systems, 23 pages (Jul. 15-17, 2003).
Chinese IPO Office Action with relevant translation for App. No. 2004100884935, Fujikoki Corporation, Mar. 2, 2007 (12 pages).

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