Combined rotary pump and compressor unit
US4512728A · kind A · utility
17Cited by
2References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 1, 1984 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Feb 1, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B1/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane-type rotary pump and a vane-type rotary compressor are integrated into a single unit and are driven by a common shaft. The compressor assembly is positioned at the rear of the pump assembly to minimize the number of mechanical seals required to seal the pump assembly along the shaft. The combined pump and compressor unit is provided with a regulating mechanism for reducing the compressor output during moderate or off modes of the refrigerant circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.