REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2021/014640

A1

The present invention provides a refrigeration cycle device including: a compressor; an indoor heat exchanger; an outdoor heat exchanger including a first outdoor heat exchanger and a second outdoor heat exchanger; a bypass flow passage with which the discharge side of the compressor communicates with the first or second outdoor heat exchanger; a flow rate control valve provided in the bypass flow passage; and a control device, the control device performing heating operation in which the first and second outdoor heat exchangers are caused to function as evaporators and the indoor heat exchanger is caused to function as a condenser, and heating and defrosting concurrent operation in which a part of refrigerant discharged from the compressor is supplied to one of the first and second outdoor heat exchangers via the bypass flow passage, the other of the first and second outdoor heat exchangers is caused to function as a evaporator, and the indoor heat exchanger is caused to function as a condenser. In the heating and defrosting concurrent operation, the control device changes the upper limit frequency of the compressor to a value higher than the upper limit frequency of the compressor in the heating operation.

WO/1993/022606	PASSIVE DEFROST SYSTEM USING WASTE HEAT
JP2022148724	AIR CONDITIONER FOR VEHICLE

TASHIRO YUSUKE (JP)
HAYAMARU YASUHIDE (JP)
KONDO MASAKAZU (JP)
SATO MASAKAZU (JP)
KAWASHIMA ATSUSHI (JP)

PCT/JP2019/029212

January 28, 2021

July 25, 2019

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MITSUBISHI ELECTRIC CORP (JP)

F25B47/02; F24F11/41; F24F11/42; F25B1/00

WO2016113851A1

2016-07-21

JPS63290369A	1988-11-28
JP2008064381A	2008-03-21
JPH04110576A	1992-04-13
JP4272224B2	2009-06-03

See also references of EP 4006452A4

KISA PATENT & TRADEMARK FIRM (JP)

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