AIR-CONDITIONING DEVICE

WIPO Patent Application WO/2019/073621

A1

An air-conditioning device comprising: a main circuit in which a compressor, a load-side heat exchanger, a first decompression device, and a plurality of parallel heat exchangers are connected by means of piping; bypass piping for diverting a portion of the refrigerant discharged from the compressor; a flow path switching unit for connecting a parallel heat exchanger being defrosted to the bypass piping; a plurality of flow rate adjustment devices for adjusting the flow rate of the refrigerant flowing through the plurality of parallel heat exchangers; and a control device. The air-conditioning device has a heating operation mode and a heating/defrosting operation mode. During the heating/defrosting operation mode or the heating operation mode after execution of the heating/defrosting operation mode, the control device controls the flow rate adjustment devices so as to adjust the flow rate of the refrigerant flowing in the parallel heat exchangers in accordance with the frost accumulation state of a parallel heat exchanger that, among the plurality of parallel heat exchangers, functions as an evaporator.

WATANABE KAZUYA (JP)
IKEDA SOSHI (JP)
ISHIMURA SHOHEI (JP)
NAKAO HIDETO (JP)

PCT/JP2018/008814

April 18, 2019

March 07, 2018

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MITSUBISHI ELECTRIC CORP (JP)

F25B5/02; F25B47/02; F25B13/00

WO2013128897A1	2013-09-06
WO2014083867A1	2014-06-05
WO2014128831A1	2014-08-28
WO2017006596A1	2017-01-12
WO2014083867A1	2014-06-05

JP2008157558A	2008-07-10
JP2012063033A	2012-03-29
JPS5528459A	1980-02-29
JP2008249236A	2008-10-16
JP2016211839A	2016-12-15
US20170219264A1	2017-08-03
JPS54124356A	1979-09-27
JP2009281698A	2009-12-03

See also references of EP 3696480A4

KISA PATENT & TRADEMARK FIRM (JP)

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