Reciprocating refrigerant compressor
US5950451A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Oct 24, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A closed reciprocating compressor for use in refrigeration cycle containing a refrigerant and a refrigerating machine oil, the refrigerant comprising a chlorine-free fluorocarbon and/or hydrofluorocarbon and having a critical temperature of 40.degree. C. or higher and said refrigerating machine oil being circulated in the refrigeration cycle, the refrigerating machine oil comprising as a base oil an ester oil of one or more fatty acids, containing at least two ester linkages in the molecule and having a viscosity at 40.degree. C. of 2 to 35 cSt and a viscosity at 100.degree. C. of 1 to 6 cSt, the motor having a winding wire and an insulating film comprising of a conductor, an insulating material and a winding oil, and the winding oil being an ester wax. The compressor is free from the problems associated with poor compatibility of winding oil with the refrigerant and/or refrigerating machine oil, and renders a good workability during the motor manufacturing process and can improve the reliability of the refrigerating apparatus using it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.