Orifice pulse tube refrigerator with pulse tube flow separator

Details Orifice pulse tube refrigerator with pulse tube flow separator Orifice pulse tube refrigerator with pulse tube flow separator

1996-08-15

1998-08-11

Bennett, Henry A.

Refrigeration

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

F25B 900

Patent

active

057911495

ABSTRACT:
An orifice pulse tube refrigerator is provided with a flow separation member in the pulse tube so as to prevent mixing of hot and cold gases from opposite end of the pulse tube, thus reducing losses due to mixing and improving efficiency. The flow separation member may take the form of a cylindrical slug of low-friction material mounted in the pulse tube for sliding movement in response to instantaneous variation in working gas pressure.

REFERENCES:
patent: 5269147 (1993-12-01), Ishizaki et al.
patent: 5275002 (1994-01-01), Inoue et al.
patent: 5335505 (1994-08-01), Ohtani et al.
patent: 5412952 (1995-05-01), Ohtani et al.
patent: 5435136 (1995-07-01), Ishizaki et al.
patent: 5440883 (1995-08-01), Harada

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