Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/171463
Kind Code:
A1
Abstract:
This air conditioning device is provided with: a refrigerant circuit through which a refrigerant flows and in which a compressor, a switching valve, a first heat exchanger, an expansion valve, and a second heat exchanger are connected through first piping; and a heating medium circuit through which a heating medium flows and in which a pump, the first heat exchanger, and a third heat exchanger are connected through second piping. The air conditioning device is provided with a control device configured to control the compressor and the pump. Before a defrosting operation is started, the control device is configured to increase the frequency of the compressor in comparison to the frequency of the compressor during a heating operation, and decrease the rotation speed of the pump to fall below the rotation speed of the pump during the heating operation.
Inventors:
TSUKIYAMA RYO (JP)
ITO MASAHIRO (JP)
ITO MASAHIRO (JP)
Application Number:
PCT/JP2018/008539
Publication Date:
September 12, 2019
Filing Date:
March 06, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F11/41; F24F5/00; F25B1/00; F25B47/02
Domestic Patent References:
| WO2016194190A1 | 2016-12-08 |
Foreign References:
| JP2014228261A | 2014-12-08 | |||
| JP2017187249A | 2017-10-12 | |||
| JPH0828932A | 1996-02-02 |
Other References:
See also references of EP 3764009A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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