Pulse-tube refrigerator

Details Pulse-tube refrigerator Pulse-tube refrigerator

1994-08-24

1995-08-15

Capossela, Ronald C.

Refrigeration

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

60520, F25B 900

Patent

active

054408830

ABSTRACT:
A double piston type pulse-tube refrigerator includes a compression cylinder, a compression piston reciprocably disposed within the compression cylinder, an expansion cylinder, an expansion piston reciprocating at preceding phase angle of about a quarter cycle and disposed within the expansion cylinder, a high temperature heat exchanger for cooling effectively working gas under compression stage interposed between the compression cylinder and the expansion cylinder, a regenerator connected to the high temperature heat exchanger, a low temperature heat exchanger connected to the regenerator and a pulse tube connected to the low temperature heat exchanger and the high temperature heat exchanger, a rotor with 4 magnetic poles constructed in a crank shaft and a ring with 4 magnetic poles corresponding to the rotor position disposed within a crank case for compensating torque unbalance.

REFERENCES:
patent: 5107683 (1992-04-01), Chan et al.
patent: 5269147 (1993-12-01), Ishizaki et al.
patent: 5275002 (1994-01-01), Inoue et al.

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