Multistage type pulse tube refrigerator

Details Multistage type pulse tube refrigerator Multistage type pulse tube refrigerator

1996-05-13

1998-01-27

Kilner, Christopher

Refrigeration

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

62467, F25B 900

Patent

active

057111561

ABSTRACT:
A multistage type tube refrigerator comprising a regenerator-side pressure oscillation generator, first regenerator connected to the regenerator-side pressure oscillation generator, first cold head connected to the low temperature side of the first regenerator, a first pulse tube having one end connected to the first cold head and the other end connected by way of a first flow regulating mechanism to a first pulse tube-side phase shifter, second regenerator having one end connected to the first cold head and the other end connected to the second cold head, a second pulse having one end connected to the second cold head and the other end connected to second pulse tube-side phase shifter by way of second flow regulating mechanism, in which the first pulse tube-side phase shifter and the second pulse tube-side phase shifter are controlled independently of each other. Further, the pulse tube refrigerator operated while setting the phase angle of the pulse tube-side phase shifter to -50.degree. to -120.degree. relative to the regenerator-side pressure oscillation generator, while setting the phase angle of the second pulse tube-side phase shifter 15.degree. to -90.degree..

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W.E. Gifford et al., "Pulse Tube Refrigeration Progress", ASME Paper No. 63-WA-290, 1963, pp. 69-79.
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