CONTROL DEVICE AND AIR CONDITIONING DEVICE

WIPO Patent Application WO/2020/110289

A1

A control device for an air conditioning device that has a plurality of outdoor units and an indoor unit connected to the plurality of outdoor units by piping, said control device having a control means that controls so as to: find the degree of overcooling at outlets of overcooling circuits of the outdoor units on the basis of the temperature detected by a temperature sensor for detecting the temperature of refrigerant passing through the overcooling circuit of each of the outdoor units before the filling of the refrigerant circuit, which includes the plurality of outdoor units and the indoor unit, with refrigerant is completed; find a target value for the degree of overcooling on the basis of the plurality of degrees of overcooling that were found; and increase the speed of compressors of the outdoor unit having a degree of overcooling greater than the target value and decrease the speed of the compressors of the outdoor unit having a degree of overcooling less than the target value so that differences in the degrees of overcooling at the outlets of the overcooling circuits of the outdoor units are minimized.

JP5606732	Refrigerant recovery subsystem
JP2022162706	COOLING DEVICE AND REFRIGERANT RECOVERY SYSTEM
WO/2006/115625	REFRIGERANT CHARGING SYSTEM AND METHOD USING CARTRIDGES AND SCALE

KANEKO HIROAKI (JP)
YAMAMOTO SHOUTARO (JP)

PCT/JP2018/044169

June 04, 2020

November 30, 2018

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HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)

F25B45/00

WO2017195248A1

2017-11-16

JP2009008381A	2009-01-15
JP2012047364A	2012-03-08
JP2011247443A	2011-12-08
JPH0599540A	1993-04-20
JP4803237B2	2011-10-26

See also references of EP 3889521A4

KNOWLEDGE PARTNERS PPC (JP)

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