Variable displacement wobble plate type compressor with improved

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

1987-04-08

1988-02-09

Freeh, William L.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417270, F04B 126, F04B 4900

Patent

active

047238917

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 a compressed refrigerant, suction and compression cylinder bores, pistons reciprocated by the wobble plate within the cylinder bores for compressing the refrigerant, a crankcase with a chamber to receive 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 communication passageway providing a fluid communication between the crankcase chamber and the discharge chamber, a first control valve for closing and opening the first passageway in response to a change in a suction pressure of the refrigerant, a second communication passageway for permitting evacuation of a blowby gas from the crankcase chamber to the suction chamber, and a second control valve changing an extent of opening of the second communication passageway in response to a change in a fluid pressure within the discharge chamber with respect to a predetermined pressure level.

REFERENCES:
patent: 4674957 (1987-06-01), Ohta et al.
patent: 4685866 (1987-08-01), Takenaka et al.
patent: 4687419 (1987-08-01), Suzuki et al.

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