Variable displacement compressor with variable angle wobble plat

Details Variable displacement compressor with variable angle wobble plat Variable displacement compressor with variable angle wobble plat

1986-03-14

1987-08-25

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417270, F04B 126

Patent

active

046889973

ABSTRACT:
A variable displacement 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 compression cylinders, pistons reciprocating in the cylinders, a crankcase receiving therein a wobble plate mechanism connected to pistons to cause reciprocating motion of the pistons and capable of changing the wobble angle thereof, a first passage for communicating the crankcase interior with the discharge chamber, a shutoff valve unit for closing and opening the first passage, a second passage for communicating the crankcase interior with the suction chamber to extract the refrigerant from the crankcase interior into the suction chamber, and a valve control unit for controlling the operation of the shutoff valve unit in response to a change in a fluid pressure in the crankcase interior with respect to a predetermined pressure level thereby controlling the wobble angle of the wobble plate mechanism.

REFERENCES:
patent: 3861829 (1975-01-01), Roberts et al.
patent: 4037993 (1977-07-01), Roberts
patent: 4145163 (1979-03-01), Fogelberg et al.
patent: 4428718 (1984-01-01), Skinner
patent: 4526516 (1985-07-01), Swain et al.
patent: 4533299 (1985-08-01), Swain et al.
patent: 4586874 (1986-05-01), Hiraga et al.

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