Free piston Vuillermier machine

Details Free piston Vuillermier machine Free piston Vuillermier machine

1996-11-25

1998-04-14

Kilner, Christopher

Refrigeration

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

60520, F25B 900

Patent

active

057379254

ABSTRACT:
A free piston Vuillermier machine which is an external combustion heat machine using a regenerative cycle, wherein a low-temperature displacer is made hollow to form a low-temperature displacer gas spring chamber, a low-temperature displacer rod is made hollow to form a hollow chamber for accommodating a high-temperature displacer rod therein as well as a high-temperature displacer gas spring chamber. Further, in the above configuration, a gas spring chamber passage may be formed to make the high-temperature displacer gas spring chamber communicate with the low-temperature displacer gas spring chamber. A high-temperature displacer mechanical spring may be provided in the high-temperature displacer gas spring chamber, and a low-temperature displacer mechanical spring mounted on the low-temperature displacer rod may be provided in the low-temperature displacer gas spring chamber.

REFERENCES:
patent: 3877239 (1975-04-01), Leo
patent: 3913339 (1975-10-01), Berry
patent: 4024727 (1977-05-01), Berry et al.
patent: 4862695 (1989-09-01), Kushnir
patent: 5615556 (1997-04-01), Honda et al.
ISEC -91060, pp. 15-20, May 1991, S. Schulz, et al., "Development Of A Free Piston Vuilleumier Machine For Cooling Purposes".

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