Variable displacement compressor with a discharge pressure compensated suction shutoff valve
US8277200B2 · kind B2 · utility
2Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2009 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Feb 23, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2027/1881
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable displacement compressor with a discharge pressure compensated suction shutoff valve (SSV). The SSV prevents noise generated at low refrigerant flow rates by a suction valve from propagating out of the compressor and to an air conditioner evaporator by variably restricting a fluid communication with the suction valve. The SSV is configured so the variable restriction is increased correspondingly with the discharge pressure if the discharge pressure is less than a threshold that is an indicator of low refrigerant flow rates, and the restriction is decreased if the discharge pressure is greater than the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.