Air conditioner operable in a room cooling mode and a room warming mode using either outdoor air or a separate heat source as a source of heat
US4482008A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Mar 29, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/52
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The disclosed airconditioner has a refrigerant compressor connected to a refrigerant circuit through a four-way valve in each of the room cooling mode and a first room warming mode of operation. The refrigerant circuit has an indoor heat exchanger, an externally heated heat exchanger, a piping, a first electromagnetic valve and an outdoor heat exchanger connected in series. A second electromagnetic valve is connected in parallel to the outdoor heat exchanger between the piping and the four-way valve to form the refrigerant circuit along with the indoor heat exchanger, the externally heated heat exchanger and the piping for the second room warming mode of operation. During the room cooling mode and first room warming mode of operation, the first electromagnetic valve is opened and the piping and the externally heated heat exchanger hold an amount of liquid refrigerant equal to the volume of the outdoor heat exchanger, while in the second room warming mode of operation in which the second electromagnetic valve and an electromagnetic valve connected across the compressor are open the outdoor heat exchange is filled with liquid refrigerant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.