Reciprocating piston compressor

Details Reciprocating piston compressor Reciprocating piston compressor

1995-06-05

1996-07-09

Freay, Charles

Pumps

Three or more cylinders arranged in parallel, radial, or...

1375992, F04B 2708

Patent

active

055338720

ABSTRACT:
A rotary valve is supported on a rotary shaft for an integral rotation. The rotary valve has a suction passage and a discharge passage. The suction passage connects a cylinder bore with a suction chamber according to the rotation of the rotary valve when a piston is in the suction stroke. The discharge passage connects the cylinder bore with a discharge chamber according to the rotation of the rotary valve when the piston is in the discharge stroke. The discharge passage includes a first passage and a second passage. The second passage communicates with the cylinder bore after the first passage has communicated with the cylinder bore after the first passage has communicated with the cylinder bore according to the rotation of the rotary valve. A discharge valve is mounted on the rotary valve. The discharge valve selectively opens and closes the first passage according to the difference between the pressures in the cylinder bore and in the discharge chamber.

REFERENCES:
patent: 5385451 (1995-01-01), Fujii et al.
patent: 5393205 (1995-02-01), Fujii et al.

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