Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/014520
Kind Code:
A1
Abstract:
An air-conditioning device according to the present invention is provided with: a main circuit in which a compressor, a refrigerant channel switching device, a load-side heat exchanger, a load-side throttle device, a first heat-source-side heat exchanger, a second heat-source-side heat exchanger, and a third heat-source-side heat exchanger are connected by piping and in which a refrigerant circulates; a heat exchanger channel switching device for switching a refrigerant channel of the first, second, and third heat-source-side heat exchangers; and a control device for controlling the heat exchanger channel switching device. The control device controls the heat exchanger channel switching device to switch the refrigerant channel of the first, second, and third heat-source-side heat exchangers to a parallel refrigerant channel when the first, second, and third heat-source-side heat exchangers are used as a defrost operation mode. The parallel refrigerant channel is a refrigerant channel in which the first, second, and third heat-source-side heat exchangers are connected in parallel to each other.
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Inventors:
HAMAGUCHI JUMPEI (JP)
MORIMOTO HIROYUKI (JP)
KIMURA TAKANAO (JP)
MORIMOTO HIROYUKI (JP)
KIMURA TAKANAO (JP)
Application Number:
PCT/JP2019/028595
Publication Date:
January 28, 2021
Filing Date:
July 22, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B47/02; F24F11/41; F24F11/42
Domestic Patent References:
| WO2018047331A1 | 2018-03-15 | |||
| WO2018047416A1 | 2018-03-15 |
Foreign References:
| JPH0420764A | 1992-01-24 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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