Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Patent
1988-02-19
1989-09-12
Freeh, William L.
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
417270, 417269, F04B 126
Patent
active
048655236
ABSTRACT:
A wobble plate compressor with a variable displacement mechanism is disclosed. The compressor includes a compressor housing having a crank chamber and a cylinder block. A plurality of cylinders is formed in the cylinder block. A drive shaft is rotatably supported in the housing. A rotor is fixed on the drive shaft and is hingedly connected to an inclined plate through a hinge mechanism. The hinge mechanism includes a first arm portion which is formed on either the rotor or inclined plate, a second arm portion having an elongated hole on the other of the rotor or the inclined plate, and a guide pin fixedly disposed in the hole of the first arm portion. A wobble portion is disposed adjacent the inclined plate and converts rotational motion of the inclined plate into nutational motion. A plurality of pistons are coupled to the wobble plate through a plurality of piston rods. Each piston is reciprocatingly fitted within a respective one of the cylinders. The stroke volume of the pistons changes according to the variation of the angle of the angle of the inclined plate. The elongated hole is formed so that the top clearance of the piston is a minimum when the angle of the inclined plate is largest, and the top clearance of the piston is a maximum when the angle of the inclined plate is smallest. The elongated hole is oriented in a manner that while the range of the inclined angles of the inclined plate is small, the capacity range variance for the compressor is large.
REFERENCES:
patent: 2964234 (1960-12-01), Loomis, III
patent: 4664604 (1987-05-01), Terauchi
patent: 4674957 (1987-06-01), Ohta
patent: 4729718 (1988-03-01), Ohta
Higuchi Teruo
Kikuchi Sei
Takai Kazuhiko
Terauchi Kiyoshi
Freeh William L.
Sanden Corporation
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