Heat pump system for air conditioning adaptable to cold regions
US6481234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | May 24, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat pump system for air conditioning adaptable to cold regions, comprising a compressor, a condenser, a thermal expansion valve and an evaporator and forms a closed circuit. The structure features that said compressor is a scroll compressor, and a supplementary inlet is provided on the working chamber of the compressor. A subcooler is provided between the condenser and the expansion valve, thus forming a closed circuit with an electromagnetic valve and an electronic expansion valve for supplementary refrigerant vapor to the supplementary inlet of the compressor. Compared to the prior art, the present invention is simple in structure, easy to manufacture and assemble, highly effective in energy utilization and low cost, and the system can operate in low temperature environment with stability and reliability. Therefore, it is particularly suitable for popularization and application in cold regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.