Gas guiding mechanism in a piston type compressor

Details Gas guiding mechanism in a piston type compressor Gas guiding mechanism in a piston type compressor

1994-02-22

1995-01-10

Bertsch, Richard A.

Pumps

Position responsive bypass between plural pump chambers

417269, 251310, F04B 4900

Patent

active

053801636

ABSTRACT:
A piston type compressor is disclosed, which comprises a cylinder block having axial cylinder bores, pistons defining compression chambers in the bores, a drive shaft, and a gas suction and discharge chambers in a housing. A valve receiving chamber is formed around the drive shaft in the cylinder block, for accommodating a rotary valve which rotates in synchronism with rotation of the drive shaft. The rotary valve has a suction passage formed therein for providing gases from the gas suction chamber to a compression chamber during the chamber's gas suction stroke. A plurality of gas communication passages are formed in the cylinder block in association with the compression chambers, each having a first port open to the associated cylinder bore and a second port open to the valve receiving chamber. The first port is located at a position (P2) apart by a predetermined distance (L) from a top dead center position (P1) of the associated piston. The rotary valve has a bypass passage formed therein, for permitting one communication passage, isolated from both the compression chambers and the gas suction chamber, to communicate with another communication passage corresponding to a compression chamber in a compression stroke.

REFERENCES:
patent: 1367914 (1921-02-01), Larsson
patent: 2160978 (1939-06-01), Mock
patent: 3288432 (1966-11-01), Ferrin et al.
patent: 4007663 (1977-02-01), Nagatomo et al.
patent: 5232349 (1993-08-01), Kimura et al.
patent: 5286173 (1994-02-01), Takenaka et al.

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