Hybrid spool valve for multi-port pulse tube

Details Hybrid spool valve for multi-port pulse tube Hybrid spool valve for multi-port pulse tube

2011-08-16

2011-08-16

Jules, Frantz F (Department: 3784)

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

C060S517000

Reexamination Certificate

active

07997088

ABSTRACT:
The problems of reducing the torque required to turn the valve, eliminating wear dust, and extending the life of the valves in Gifford McMahon (G-M) type multi-port pulse tube refrigerators are solved by using a rotary spool valve having radial clearance to control flow to and from the regenerator, and using face seal ports on the end of the spool to control flow to and from the pulse tubes.

REFERENCES:
patent: 3119237 (1964-01-01), Gifford
patent: 4333755 (1982-06-01), Sarcia
patent: 4339927 (1982-07-01), Sarcia
patent: 4584839 (1986-04-01), Jensen et al.
patent: 4987743 (1991-01-01), Lobb
patent: 5129236 (1992-07-01), Solomon
patent: 5378207 (1995-01-01), Stevenson
patent: 5711156 (1998-01-01), Matsui et al.
patent: 5775199 (1998-07-01), Sell
patent: 5878580 (1999-03-01), Schilling et al.
patent: 5901737 (1999-05-01), Yaron
patent: 6256998 (2001-07-01), Gao
patent: 6308520 (2001-10-01), Inoue et al.
patent: 6378312 (2002-04-01), Wang
patent: 6434947 (2002-08-01), Zhu et al.
patent: 6460349 (2002-10-01), Kawano et al.
patent: 6629418 (2003-10-01), Gao et al.
patent: 6694749 (2004-02-01), Heron
patent: 7549295 (2009-06-01), Gao
patent: 2003/0089116 (2003-05-01), Heron
patent: 2003/0202896 (2003-10-01), Dong et al.
patent: WO2005/088210 (2005-09-01), None
International Search Report and Written Opinion dated Apr. 29, 2005 from the corresponding PCT/US2005/001101 in English.
International Preliminary Report on Patentability dated Jul. 17, 2007 from the corresponding PCT/US2005/001101.

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