Refrigerant compressor with a capacity adjusting mechanism

Details Refrigerant compressor with a capacity adjusting mechanism Refrigerant compressor with a capacity adjusting mechanism

1984-12-21

1986-05-06

Freeh, William L.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417270, F04B 126

Patent

active

045868743

ABSTRACT:
A reciprocating piston type refrigerant compressor includes a compressor housing having a cylinder block provided with a plurality of cylinders and a crank chamber adjacent the cylinder block. A piston slides within each cylinder and is reciprocated by a wobble plate driven by a cam rotor mounted on a drive shaft. The cam rotor includes an adjustable slant plate with a sloping surface at an adjustable slant angle in close proximity to the wobble plate. Accordingly, the stroke of the pistons within the cylinders can be changed by adjusting the slant angle of the sloping surface. The slant angle of the sloping surface is adjusted in response to the change of pressure in the crank chamber. The crank chamber communicates with the suction chamber through a passageway and a valve control mechanism controls the opening and closing of the passageway. Thus, the capacity of the compressor of the present invention can be adjusted by changing the slant angle of the sloping surface of the slant plate in response to operation of the valve control mechanism.

REFERENCES:
patent: 3010403 (1961-11-01), Zubaty
patent: 4037993 (1977-07-01), Roberts
patent: 4073603 (1978-02-01), Abendschein
patent: 4145163 (1979-03-01), Fogelberg
patent: 4149830 (1979-04-01), Woodruff
patent: 4174191 (1979-12-01), Roberts
patent: 4475871 (1984-10-01), Roberts

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