Asymmetrical suction porting for swash plate compressor

Details Asymmetrical suction porting for swash plate compressor Asymmetrical suction porting for swash plate compressor

1992-02-07

1992-11-17

Smith, Leonard E.

Pumps

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

417525, 417550, F04B 112, F04B 2104

Patent

active

051638193

ABSTRACT:
A swash plate compressor is disclosed having double acting pistons that reciprocate in aligned sets of horizontally extending bores of a cylinder block to compress gaseous refrigerant. An improved asymmetrical arrangement of suction or intake ports is provided in at least the bottommost piston. The ports extend longitudinally through the operating heads of the piston and are connected by an open channel so as to provide fluid communication through the piston. A matching valve disc with a flexible ring is included so as to provide unidirectional flow through the suction ports during the intake stroke. The suction ports are on a constant radius arc spaced 30.degree. apart and are excluded from the lower 120.degree. portion of the piston to form the asymmetrical arrangement. Liquid lubricant in the reservoir pool adjacent the bottom of the crankcase is sufficiently spaced from the ports so that it is prevented from being drawn through the suction ports and into the cylinder bore, thus eliminating slugging.

REFERENCES:
patent: 2457339 (1948-12-01), Bertea
patent: 4360321 (1982-11-01), Copp

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