Variable displacement wobble plate type compressor with wobble a

Details Variable displacement wobble plate type compressor with wobble a Variable displacement wobble plate type compressor with wobble a

1986-04-28

1987-08-11

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417270, F04B 126

Patent

active

046858660

ABSTRACT:
A variable displacement wobble plate type compressor with a variable angle non-rotary wobble plate, having a suction chamber for refrigerant before compression, a discharge chamber for refrigerant after compression, suction and discharge cylinder bores, pistons reciprocating in the cylinder bores, a crankcase receiving therein a drive and a wobble plate mechanism mounted about a drive shaft connectable to a rotary drive source, i.e., a vehicle engine, connected to the pistons to cause reciprocating motion of the pistons and capable of changing the wobble angle thereof, a first passageway for communicating the crankcase interior chamber with the discharge chamber, a control valve unit for closing and opening the first passageway, a second passageway for constantly communicating the crankcase interior chamber with the suction chamber to enable a constant extraction of the refrigerant from the crankcase interior chamber into the suction chamber, and a third passageway providing an additional fluid communication between the crankcase interior chamber and the suction chamber in accordance with a decrease in the wobbling angle of the drive and wobble plates, thereby permitting an additional extraction of the refrigerant gas from the crankcase interior chamber into the suction chamber when the compressor is in a small displacement operation.

REFERENCES:
patent: 4037993 (1977-07-01), Roberts
patent: 4174191 (1979-11-01), Roberts
patent: 4428718 (1984-01-01), Skinner
patent: 4480964 (1984-11-01), Skinner
patent: 4526516 (1985-07-01), Swain et al.
patent: 4586874 (1986-05-01), Hiraga et al.

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