Compressors for heat pumps
US4208883A · kind A · utility
20Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1978 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | May 30, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/01
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A compressor for a heat pump using a condensible gas as a working fluid has a lubricant temperature controller comprising a heater for the lubricant in the sump, the heater being controlled by differential pressure responsive means comprising the vapor pressure above the lubricant in the sump with a pressure obtained from a sensor bulb in the sump oil, the bulb containing a solution, in a lubricant of a refrigerant, the refrigerant preferably being the same as the working fluid of the heat pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.