Refrigerant circulating system
US5531080A · kind A · utility
21Cited by
14References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Jul 12, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A refrigerant circulating system that uses a highly polar refrigerant, as typified by a hydrofluorocarbon-based one, and a refrigerating oil that has slight solubility with a liquid refrigerant on the condensation side. Also, a refrigerant circulating cycle that uses a highly polar refrigerant, as typified by a hydrofluorocarbon-based one, and a refrigerating oil that has a slight solubility with a liquid refrigerant and which has a greater specific gravity than the liquid refrigerant. Thereby, it provides a high electrical insulation and moisture resistance, good oil return to the compressor, and high reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.