Title:
AIR-CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2021/117231
Kind Code:
A1
Abstract:
The air-conditioning device according to the present invention comprises: a compressor; an indoor heat exchanger; a first outdoor heat exchanger and a second outdoor heat exchanger connected in parallel between the compressor and the indoor heat exchanger; a valve provided between the second outdoor heat exchanger and the indoor heat exchanger, the valve switching between an open state in which a flow path between the second outdoor heat exchanger and the indoor heat exchanger is open and a closed state in which the flow path between the second outdoor heat exchanger and the indoor heat exchanger is closed; a temperature sensor for detecting the temperature of the refrigerant that has flowed into the second outdoor heat exchanger and liquefied; and a condensation temperature detection device for detecting the condensation temperature of the refrigerant. The first outdoor heat exchanger functions as a condenser, and the indoor heat exchanger functions as an evaporator. When, during a first cooling operation in which the valve is in a closed state, a comparison temperature, which is a value obtained by subtracting the temperature detected by the temperature sensor from the condensation temperature, becomes equal to or greater than a stipulated temperature, a switch is made to a second cooling operation in which the valve is in an open state.
Inventors:
IWASAKI KAZUHISA (JP)
OKANO HIROYUKI (JP)
OKANO HIROYUKI (JP)
Application Number:
PCT/JP2019/048979
Publication Date:
June 17, 2021
Filing Date:
December 13, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Foreign References:
| JP2014214951A | 2014-11-17 | |||
| JP2007107860A | 2007-04-26 | |||
| JP2016095045A | 2016-05-26 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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