Linear compressor with a coaxial piston arrangement

Details Linear compressor with a coaxial piston arrangement Linear compressor with a coaxial piston arrangement

1998-05-29

2000-06-27

Freay, Charles G.

Pumps

Expansible chamber type

Plural pumping members in single pump chamber

417313, 62 6, F25B 900

Patent

active

060799609

ABSTRACT:
A linear compressor having improved heat-radiating performance incorporates first and second cylinders disposed coaxially, a first piston reciprocatably disposed inside the first cylinder, a second piston reciprocatably disposed inside the second cylinder, a compression chamber formed by the front face of the first piston and the front face of the second piston and a connecting wall connecting the first and second cylinders, and multiple working gas passages having openings formed in the connecting wall and connecting the compression chamber to the outside via these openings. The working gas passages are formed on a plane perpendicular to the axial direction of the first and second cylinder. Heat-radiating means are provided around the working gas passages. The first cylinder and the second cylinder are made of aluminum (or an aluminum alloy). As a result, the size of the compression chamber can he decreased and the compression ratio thereby increased, and heat from the working gas can be radiated efficiently from the working gas passages and from the cylinders.

REFERENCES:
patent: 3220201 (1965-11-01), Heuchling
patent: 3788088 (1974-01-01), Dehne
patent: 4010621 (1977-03-01), Raetz
patent: 4872313 (1989-10-01), Kazumoto et al.
patent: 5113662 (1992-05-01), Fujii et al.
patent: 5174130 (1992-12-01), Lucas
patent: 5465579 (1995-11-01), Terada et al.
patent: 5609034 (1997-03-01), Mita et al.
patent: 5693991 (1997-12-01), Hiterer et al.

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