Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2019/021380
Kind Code:
A1
Abstract:
This air conditioner has: a heat source device having a heat-source-side heat exchanger and a compressor; a first relay device connected to the heat source device by refrigerant piping; a second relay device connected to the first relay device by a high-pressure gas pipe, a low-pressure gas pipe, and a liquid pipe; a plurality of connection ports provided to the second relay device, the plurality of connection ports having a high-pressure valve connected to the high-pressure gas pipe and a low-pressure valve connected to the low-pressure gas pipe; and a control unit that controls the compressor and the plurality of connection ports. When all load-side units connected to the second relay device have stopped, the control unit performs a refrigerant recovery process for opening the high-pressure valve and the low-pressure valve of at least one connection port from among the plurality of connection ports and connecting the high-pressure gas pipe and the low-pressure gas pipe.
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Inventors:
AZUMA KOJI (JP)
BABA YOHEI (JP)
ASANUMA HIROAKI (JP)
MORIMOTO OSAMU (JP)
BABA YOHEI (JP)
ASANUMA HIROAKI (JP)
MORIMOTO OSAMU (JP)
Application Number:
PCT/JP2017/026958
Publication Date:
January 31, 2019
Filing Date:
July 26, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B13/00
Domestic Patent References:
| WO2017042967A1 | 2017-03-16 |
Foreign References:
| JP2003097864A | 2003-04-03 | |||
| JP2008116073A | 2008-05-22 | |||
| JP2013015280A | 2013-01-24 | |||
| JPH0571825A | 1993-03-23 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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