Refrigeration expansion valve with thermal mass power element

Details Refrigeration expansion valve with thermal mass power element Refrigeration expansion valve with thermal mass power element

2005-02-01

2005-02-01

Tapolcai, William E. (Department: 3744)

Automatic temperature and humidity regulation

Thermostatic

With pressure control

C062S225000

Reexamination Certificate

active

06848624

ABSTRACT:
Thermostatic expansion valve for a vehicle air-conditioning system including a housing and a power element supported by the housing. The power element includes a diaphragm, and a pressure pad disposed against the diaphragm. The pressure pad may be formed in one piece from copper, a copper alloy, or another material, which material may also be a blend, composite, mixture, or other combination, having a thermal conductivity of at least about 800 BTU-in/hr-ft2-° F. (115 W/m-K), and preferably 1200 BTU-in/hr-ft2-° F. (170 W/m-K), and more preferably at least about 2000 BTU-in/hr-ft2-° F. (280 W/m-K), and a density of at least about 0.3 lb/in3(8 g/cm3), and is connected via a stem to a valve element in the housing to control the refrigerant flow between the condensor and evaporator. The use of such material in the pressure pad reduces the susceptibility of the valve to external temperature changes and reduces the hunting of the valve.

REFERENCES:
patent: 1512243 (1924-10-01), Shrode
patent: 1987948 (1935-01-01), Smith
patent: 2221062 (1940-11-01), Starr
patent: 2306768 (1942-12-01), Wile
patent: 2598187 (1952-05-01), Meyer
patent: 2631612 (1953-03-01), Buescher
patent: 2786336 (1957-03-01), Lange
patent: 3450345 (1969-06-01), Orth et al.
patent: 3537645 (1970-11-01), Treder
patent: 3667247 (1972-06-01), Proctor
patent: 3691783 (1972-09-01), Proctor
patent: 3699778 (1972-10-01), Orth
patent: 3738573 (1973-06-01), Eschbaugh et al.
patent: 3742722 (1973-07-01), Leimbach
patent: 3810366 (1974-05-01), Orth
patent: 3979923 (1976-09-01), Jennings
patent: 4416416 (1983-11-01), Malthy
patent: 4468054 (1984-08-01), Orth
patent: 4542879 (1985-09-01), Stein
patent: 4815698 (1989-03-01), Palmer
patent: 4819443 (1989-04-01), Watanabe et al.
patent: 4834337 (1989-05-01), Chorkey et al.
patent: 4852364 (1989-08-01), Seener et al.
patent: 4979372 (1990-12-01), Tanmaka
patent: 4984735 (1991-01-01), Glennon et al.
patent: 4995742 (1991-02-01), Cattaneo
patent: 5044170 (1991-09-01), Tanaka
patent: 5060485 (1991-10-01), Watanabe et al.
patent: 5127237 (1992-07-01), Sendo et al.
patent: 5165251 (1992-11-01), Tsukamoto et al.
patent: 5169178 (1992-12-01), Hunzinger
patent: 5228619 (1993-07-01), Yano et al.
patent: 5297728 (1994-03-01), Yano et al.
patent: 5303864 (1994-04-01), Hirota
patent: 5361597 (1994-11-01), Hazime et al.
patent: 5467611 (1995-11-01), Cummings et al.
patent: 5555739 (1996-09-01), Kujirai et al.
patent: 5775118 (1998-07-01), Endo
patent: 5957376 (1999-09-01), Fujimoto et al.
patent: 5961038 (1999-10-01), Okada
patent: 5996899 (1999-12-01), Watanabe et al.
patent: 6223994 (2001-05-01), Fukuda et al.
patent: 6293472 (2001-09-01), Yano
patent: 6560982 (2003-05-01), Kobayashi et al.
patent: 6626365 (2003-09-01), Kobayashi et al.
patent: 0 659 600 (1995-06-01), None
patent: 0 691 517 (1996-01-01), None
patent: 0 537 776A1 (1997-03-01), None
patent: 0 836 061 (1998-04-01), None
patent: 0 846 927 (1998-10-01), None
patent: 1050101 (1994-01-01), None
patent: 831073 (1998-05-01), None
patent: 696 (1898-02-01), None
patent: 5-322381 (1993-07-01), None
patent: 08-193769 (1996-07-01), None
patent: 08-210734 (1996-08-01), None
patent: 9-159324 (1997-06-01), None
patent: 09-273835 (1997-10-01), None
Copy of Notification of Transmittal of the International Search Report or the Declaration in corresponding International Application PCT/US03/33101.
Journal of Nippondenso Technical Disclosure, published 1986.

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