Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/020621
Kind Code:
A1
Abstract:
Provided is an air conditioning device comprising a heat source, a plurality of indoor units, a relay device, and a control unit. The relay device has a liquid state detection unit, a gas/liquid separation device, a second flow rate control device, a third flow rate control device, a cooler solenoid valve, and a heater solenoid valve. The control unit has the following: a valve control means that, when the heat source switches from heating operation to defrosting operation, causes a flow path switching valve to switch, stops the heater solenoid valve, and opens the second flow rate control device; a determination means that determines whether the coolant flowing in the second flow rate control device or the third flow rate control device is generating flow noise on the basis of the state of the coolant detected by the liquid state detection unit when the coolant flows in the second flow rate control device; and a timing control means that controls the valve control means such that the heater solenoid valve and the cooler solenoid valve successively open when the determination means determines that the coolant flowing in the second flow rate control device or the third flow rate control device is generating flow noise.
Inventors:
AZUMA KOJI (JP)
KAWAGOE TOMOKAZU (JP)
BABA YOHEI (JP)
MORIMOTO OSAMU (JP)
TAKAHASHI HIROKI (JP)
KAWAGOE TOMOKAZU (JP)
BABA YOHEI (JP)
MORIMOTO OSAMU (JP)
TAKAHASHI HIROKI (JP)
Application Number:
PCT/JP2016/072083
Publication Date:
February 01, 2018
Filing Date:
July 27, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B29/00; F25B13/00; F25B41/00; F25B47/02
Domestic Patent References:
| WO2014106900A1 | 2014-07-10 |
Foreign References:
| JPH08291951A | 1996-11-05 | |||
| JPH0942804A | 1997-02-14 | |||
| JP2007064510A | 2007-03-15 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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