Automatic refrigerant charging apparatus
US7472557B2 · kind B2 · utility
13Cited by
42References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2004 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Sep 13, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/21163
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioning system includes a plurality of sensors for sensing temperature and/or pressure conditions of the system which collectively indicate the actual refrigerant charge level in the system. This level is then compared with optimum level values that are stored in memory, and the difference between the two is used to indicate whether the system is properly charged. If not, the difference is applied to open a charge valve or a purge valve to automatically install additional refrigerant or to remove refrigerant so as to establish an optimum volume of refrigerant in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.