Refrigerant recovery and recharging system with automatic air purging
US6134899A · kind A · utility
30Cited by
16References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Mar 19, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2345/002
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Conduits are coupled to a supply tank of refrigerant to allow the sensing of the amount of air present in the refrigerant tank and, upon the detection of air, the purging of air from the tank with a minimal loss of refrigerant. Preferably, the conduits include flow restrictors such as orifices and solenoid valves controlled by a microprocessor to sequentially sample and purge air from the refrigerant tank as required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.