Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent
1995-02-21
1996-05-14
Capossela, Ronald C.
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
60520, F25B 900
Patent
active
055156851
ABSTRACT:
Two three-way valves (12) (13) of the rotary type are arranged in parallel in a high-pressure refrigerant gas passage (15) of a compressor (7). A high-temperature end portion of a cold accumulator (2) is communicated with one three-way valve (12) of the rotary type through a main gas passage (19) as well as a high-temperature end of a pulse tube (1) is communicated with the other three-way valve (13) of the rotary type through a sub gas passage (20). A low-pressure port of each three-way valve (12)(13) is communicated with a low-pressure refrigerant gas return passage (17) of the compressor (7) respectively. A flow regulating member (21) is interposed in the sub gas passage (20). Both the three-way valves (12) (13) are synchronously rotated. A valve opening-closing timing of the one three-way valve (12) or (13) is adjustably changed relative to that of the other three-way valve (13) or (12).
REFERENCES:
patent: 5269147 (1993-12-01), Ishizaki et al.
patent: 5275002 (1994-01-01), Inoue et al.
patent: 5295355 (1994-03-01), Zhou et al.
patent: 5335505 (1994-08-01), Ohtani et al.
patent: 5412952 (1995-05-01), Ohtani et al.
patent: 5440883 (1995-08-01), Harada
Peiyi, Shaowei, Zhongqi. "Analysis of Double Inlet Pulse Tube Refrigerator with a Valveless Stepped Piston Compressor", Cryogenics V. 30, Sep. Supplement, p. 253 (1990).
Kawaguchi Etsuji
Nishitani Tomio
Yanai Masayoshi
Capossela Ronald C.
Iwatani Plantech Corporation
Iwatani Sangyo Kabushiki Kaisha
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