Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/212599
Kind Code:
A1
Abstract:
This air-conditioning device comprises: a heat source unit which has a compressor, a first flow path switching device, and a heat-source-side heat exchanger; indoor units which each have a throttle device and a use-side heat exchanger; a liquid pipe and a gas pipe which connect the heat source unit and the indoor units; a refrigerant circuit which is configured from the compressor, the first flow path switching device, the heat-source side heat exchanger, the throttle device, and the use-side heat exchanger connected by pipes through which a refrigerant is circulated; a first bypass pipe which connects the liquid pipe and the gas pipe; a second bypass pipe which branches off from the first bypass pipe and discharges the refrigerant to the exterior; a second flow rate switching device which opens and closes the heat-source-unit-side of the liquid pipe, the indoor-unit-side of the liquid pipe, and the first bypass pipe side; a first opening-closing device which is provided in the gas pipe; a second opening-closing device which is provided in the second bypass pipe; a refrigerant leakage detector which detects the leakage of the refrigerant from the refrigerant circuit; and a control device which, upon detecting leakage of the refrigerant during a cooling operation, closes the second opening-closing device and starts a pump down operation. After the completion of the pump down operation, the control device closes the first opening-closing device, and, upon detecting leakage of the refrigerant, opens the second opening-closing device.
More Like This:
| WO/2010/079570 | ELECTROMAGNETIC INDUCTION HEATING UNIT AND AIR CONDITIONING DEVICE |
| JPS59129352 | REFRIGERATION CYCLE DEVICE |
Inventors:
KIMURA TAKANAO (JP)
Application Number:
PCT/JP2016/067141
Publication Date:
December 14, 2017
Filing Date:
June 08, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B45/00; F25B49/02
Foreign References:
| JP2002228281A | 2002-08-14 | |||
| JP2010002137A | 2010-01-07 | |||
| JP2013122364A | 2013-06-20 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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