Thermally operated refrigerator

Details Thermally operated refrigerator Thermally operated refrigerator

1993-10-29

1995-04-18

Capossela, Ronald C.

Refrigeration

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

60520, F25B 900

Patent

active

054068010

ABSTRACT:
A thermally operated refrigerator includes a hot space absorbing a heat from an outer heat source at a high temperature, an ambient space having a first portion and a second portion, a heat accumulator disposed between the hot space and the first portion of the ambient space for establishing a first fluid circuit in which an amount of operating fluid is filled, a hot displacer whose reciprocal movement establishes a periodical movement of the operating fluid in the first fluid circuit for rejecting the heat absorbed at the hot space to the first portion of the ambient space, a cold space absorbing a heat from a load at a low temperature, a cooler disposed between the cold space and the second portion of the ambient space for establishing a second fluid circuit in which an amount of operating fluid is filled, a cold displacer whose reciprocal movement establishes a periodical movement of the operating fluid in the second fluid circuit for rejecting the heat absorbed at the cold space to the second portion of the ambient space, a mechanism for driving the hot displacer and the cold displacer concurrently, an additional ambient space having a variable volume and disposed between the first portion and the second portion of the ambient space.

REFERENCES:
patent: 3523427 (1970-08-01), Simpson
patent: 4642988 (1987-02-01), Benson
patent: 4822390 (1989-04-01), Kazumoto et al.
patent: 4872313 (1989-10-01), Kazumoto et al.
patent: 5088288 (1992-02-01), Katagishi et al.
patent: 5177971 (1993-01-01), Kiyota
Graham Walker, "Cryocoolers Part 1: Fundamentals", Chapter 4, pp. 206-221, Plenum Press 1983.

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