Free piston-type compressor

Details Free piston-type compressor Free piston-type compressor

1992-04-16

1994-01-04

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

417340, F04B 1704

Patent

active

052755428

ABSTRACT:
A free piston type compressor includes a piston slidably fitted within a cylinder. A compression chamber is defined in the cylinder on one side of the piston, and a balance chamber is defined in the cylinder on the other side of the piston. A piston rod is connected to the piston and axially extends out of the cylinder through the balance chamber. A valve mechanism includes a suction valve, a discharge valve, and a valve plate, and is disposed on the end portion of the cylinder that faces the compression chamber. Since the piston rod extends out of the cylinder without passing through the compression chamber, the seal between the cylinder and the piston rod is not subjected to the high pressure working fluid, and the volumetric efficiency of the compressor is increased by reducing the dead clearance in the compression chamber.

REFERENCES:
patent: 3145660 (1964-08-01), Bush
patent: 4002935 (1977-01-01), Bauer
patent: 4090816 (1978-05-01), Takahashi
patent: 4781546 (1988-11-01), Curwen
patent: 4836757 (1989-06-01), Curwen et al.

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