Gas compression/expansion apparatus

Details Gas compression/expansion apparatus Gas compression/expansion apparatus

1994-11-21

1996-04-09

Capossela, Ronald C.

Refrigeration

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

60520, F25B 900

Patent

active

055050476

ABSTRACT:
An apparatus is provided for compressing/expanding a refrigerant gas. The pistons 13 and 16 for use in the apparatus each have cavities formed in the pistons 13 and 16, and check valves 40 and 41 mounted on one end of the respective pistons for closing/opening the cavities so that the cavities are filled with the pressurized gas. The pistons also have a multiplicity of bores 42 and 43 communicating with the respective cavities for ejecting the high pressure gas into respective gaps between the pistons and cylinders accommodating the pistons. The ejected gas forms gas bearings for the pistons, keeping the pistons off the cylinders, thereby eliminating any mechanical friction between them and hence wear of the pistons and the cylinders. This helps significantly prolong life time of the apparatus.

REFERENCES:
patent: 4412423 (1983-11-01), Durenec
patent: 4479358 (1984-10-01), Lam
patent: 4543793 (1985-10-01), Chellis et al.
patent: 4846256 (1989-07-01), nee Erosi
patent: 5259197 (1993-11-01), Byung-Mu

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