Refrigerant compressor with shaft bearing having improved wear resistance
US4776778A · kind A · utility
1Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1988 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Feb 17, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/021
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a refrigerant compressor, a driving shaft is rotatably supported within a compressor housing by a bearing on a suction side. A trigger valve is provided in a passageway communicating a discharge pressure chamber with the bearing on the suction side. When pressure within the discharge pressure chamber is lower than a predetermined value, the trigger valve opens the passageway to permit gaseous refrigerant of high temperature within the discharge pressure chamber to be supplied to the bearing on the suction side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.