Slant plate type compressor with variable displacement mechanism
US4874295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Mar 24, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2027/1845
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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 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 can be adjusted by changing the slant angle of the sloping surface of the slant plate in response to the operation of the valve control mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.