Method for removal of acid from compressor oil
US5770048A · kind A · utility
5Cited by
13References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1995 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Aug 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/20
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An alcohol, specifically ethanol, methanol and isopropanol, is used to remove acid from a refrigeration system, a heat pump or an air conditioner. The alcohol vaporizes acid, primarily inorganic acid, in the system and, in the filter/dryer, reacts with surfaces or is adsorbed. The alcohol, the quantity of which is determined from the capacity of the filter/dryer, is introduced into the compressor oil sump for thorough mixing with the oil during compressor lubrication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.