Axial multi-piston type compressor having rotary valve for intro

Details Axial multi-piston type compressor having rotary valve for intro Axial multi-piston type compressor having rotary valve for intro

1994-04-05

1994-12-13

Bertsch, Richard A.

Pumps

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

417439, 91480, 91499, 13762511, F04B 112

Patent

active

053724836

ABSTRACT:
An axial multi-piston type compressor includes: a drive shaft; a cylinder block having cylinder bores surrounding the shaft, a central circular space, and respective radial passages for communicating the bores with the space; pistons slidably received in the respective bores, and a housing associated with the block to define a crank chamber. The pistons are successively reciprocated in the bores by a rotation of the shaft so that a suction stroke and a discharge stroke are alternately executed in each bore. A suction rotary valve is rotationally and slidably received in the space to be cooperated with the passages for successively introducing a fluid into the bores subjected to the suction stroke, through the corresponding passages thereof, and for successively closing the passages of the bores subjected to the compression stroke. A leakage of a compressed fluid occurs at openings of the passages of the bores subjected to the compression stroke, and prevails in a clearance between an outer surface of the valve and an inner surface of the space. The valve includes a circular groove passage formed in the outer surface thereof for recovering the leakage to prevent introduction of the leakage into the crank chamber.

REFERENCES:
patent: 1367914 (1921-02-01), Larsson
patent: 5232349 (1993-08-01), Kimura et al.

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