Variable capacity wobble plate compressor

Details Variable capacity wobble plate compressor Variable capacity wobble plate compressor

1987-03-13

1988-04-12

Freeh, William L.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417223, F04B 126

Patent

active

047370793

ABSTRACT:
A variable capacity wobble plate compressor of the type that a wobble plate mounted on a drive shaft is swung axially of the drive shaft as the drive shaft rotates, and pistons connected to the wobble plate make reciprocating motions in response to swinging of the wobble plate, wherein a change in the angularity of the wobble plate causes a change in stroke of the reciprocating motions of the pistons whereby the capacity of the compressor is varied. A sensing element arranged on the wobble plate is moved along a predetermined orbital path together with swinging of the wobble plate. A sensor arranged on a compressor housing generates an electric signal when the sensing element passes by the sensor as the wobble plate swings. A control unit determines the rotational speed of the compressor and the angularity of the wobble plate on the basis of the electric signal from the sensor. The sensor is so located as to align with a predetermined location between an axial center of the predetermined orbital path of swinging of the sensing element and an extreme possible point toward the pistons, when the wobble plate assumes the minimum angularity.

REFERENCES:
patent: 4393966 (1983-07-01), Kono et al.
patent: 4526516 (1985-07-01), Swain
patent: 4533299 (1985-08-01), Swain
patent: 4543043 (1985-09-01), Roberts
patent: 4586874 (1986-05-01), Hinga et al.
patent: 4606705 (1986-08-01), Parekh
patent: 4632640 (1986-12-01), Terauchi
patent: 4655689 (1987-04-01), Westueer et al.

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