Variable displacement compressor
US6217293A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B27/1804
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable displacement compressor includes a swash plate, which is rotatably supported on a drive shaft in a crank chamber. The crank chamber is connected to a discharge chamber through a pressurizing passage. An electromagnetic control valve is located in the pressurizing passage. When the control valve opens the pressurizing passage, pressure in the crank chamber increases and inclination of the swash plate decreases. When the control valve closes the pressurizing passage, the pressure in the crank chamber decreases and inclination of the swash plate increases. A fixed restrictor is located in the pressurizing passage. When the control valve suddenly opens the pressurizing passage, the fixed restrictor limits the flow rate of gas in the pressurizing passage so that the pressure in the crank chamber gradually increases. Accordingly, the inclination of the swash plate gradually decreases, thus reducing vibration and noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.