Fluid machine for gas compression refrigerating system

Details Fluid machine for gas compression refrigerating system Fluid machine for gas compression refrigerating system

2006-10-17

2006-10-17

Nguyen, Hoang (Department: 3748)

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Parallel cylinders

C092S057000, C092S071000, C060S653000, C060S671000

Reexamination Certificate

active

07121190

ABSTRACT:
A fluid machine for a gas compression refrigerating system comprises a first and a second working for performing a pump mode operation, in which working fluid of low pressure is sucked into and compressed by the working chambers. The fluid machine further comprises valve mechanism for selectively forming a motor mode passage in combination with a fluid passage change-over device, so that super heated working fluid of high pressure is introduced into at least one of the working chambers to perform a motor mode operation, in which the high pressure working fluid is expanded in the working chamber to obtain mechanical energy. The fluid machine according to the invention, therefore, performs the pump mode operation at one of the working chambers and at the same time the motor mode operation at the other working chamber.

REFERENCES:
patent: 4297086 (1981-10-01), McGowan
patent: 4819429 (1989-04-01), Kordak
patent: 6659738 (2003-12-01), Iwanami et al.
patent: 6796774 (2004-09-01), Stolzer
patent: 2003/0010195 (2003-01-01), Stolzer
patent: 2004/0184923 (2004-09-01), Iwanami et al.
patent: B-2540738 (1996-07-01), None
U.S. Appl. No. 10/764,534, filed Jan. 27, 2004, Iwanami et al., (corresp. to the JP-2003-165112 discussed on p. 3 of the specification).

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