Cryogenic refrigerator

Details Cryogenic refrigerator Cryogenic refrigerator

2007-12-18

2007-12-18

Ali, Mohammad M. (Department: 3744)

Refrigeration

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

C062S467000

Reexamination Certificate

active

10864396

ABSTRACT:
A cryogenic refrigerator includes a first refrigerant tube and a second refrigerant tube each comprising two tubes that are arranged on a cooling stage substantially parallel to each other and communicate with each other through a gas passage formed in the cooling stage. Phase differences are provided to oscillating gas pressures in the first and second refrigerant tubes, to cancel vibration of the cooling stage. Thus, the cryogenic refrigerator can be provided which can effectively reduce the vibration of the cooling stage caused by the oscillating gas pressure and can reduce the size thereof.

REFERENCES:
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patent: 5647219 (1997-07-01), Rattray et al.
patent: 6629418 (2003-10-01), Gao et al.
patent: 6694730 (2004-02-01), O'Baid et al.
patent: 56-66657 (1981-06-01), None
patent: 06-034213 (1994-02-01), None
patent: 06-159835 (1994-06-01), None
patent: 2002-106993 (2002-04-01), None
patent: 2003-148826 (2003-05-01), None

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