Refrigeration system employing multiple economizer circuits
US6694750B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Aug 21, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/13
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The refrigeration system of the present invention includes multiple economizer circuits. After flowing through the condenser, a first path of refrigerant is split from the main path. The refrigerant in the first path is expanded to a lower pressure and cools the refrigerant in the main path in the high pressure economizer heat exchanger. The refrigerant in the first path then returns to the compressor in a high pressure economizer port. A second path of refrigerant is then split from the main path. The refrigerant in the second flow path is expanded to a lower pressure and cools the refrigerant in the main path in the low pressure economizer heat exchanger. The refrigerant in the second path then return to the compressor in a low pressure economizer port. The refrigerant in the main path is then evaporated. The dual stage economizer refrigeration system can be employed with a screw compressor or a scroll compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.