Swash plate type compressor with a central discharge passage

Details Swash plate type compressor with a central discharge passage Swash plate type compressor with a central discharge passage

1992-05-18

1993-05-04

Smith, Leonard E.

Pumps

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

91502, 92 71, F04B 2708

Patent

active

052075630

ABSTRACT:
A swash plate type compressor is provided with a plurality of cylinders and a front and rear cylinder blocks having a crank case connected to a suction port. The cylinder blocks are connected to a front and rear housing sections in order to cover the cylinders. Each housing section contains a discharge chamber. A drive shaft is rotatable supported by the cylinder blocks. One end of the drive shaft is sealed within the front housing. A swash plate is mounted on the drive shaft and is rotatably disposed within the crank case. A plurality of two-head pistons engage the swash plate via a pair of shoes. The pistons move within their respective cylinders in cooperation with the swash plate. The refrigerant is sucked into each cylinder via a suction passage, and is then compressed therein. The refrigerant is discharged into the external refrigerating circuit through the front and rear discharge chambers, .and the front and rear discharge ports. A discharge passage is provided within the drive shaft, and interconnects the front and rear discharge chambers. A valve is provided at one end of the discharge passage to control the opening of the discharge port in relation to the pressure difference between the front and rear discharge chambers.

REFERENCES:
patent: 3079869 (1963-03-01), Purcell
patent: 3734647 (1973-05-01), Sparks
patent: 3888604 (1975-06-01), Oshima et al.
patent: 5052898 (1991-10-01), Cook

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