Heat pump apparatus
US5711163A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1996 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Jul 12, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2313/02732
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat pump apparatus includes a compressor, an expander, at least three heat exchangers and a cooling-medium route switchover device for switching over cooling-medium (refrigerant) route to the heat exchangers so as to selectively provide a two-evaporator operation mode in which two of the heat exchangers are used as evaporators and the other heat exchanger is used as a condenser and a two-condenser operation mode in which two of the heat exchangers are used as condensers and the other heat exchanger is used as an evaporator. The heat exchangers used as evaporators in the two-evaporator operation mode or as condensers in the two-condenser operation mode are serially connected with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.