Title:
AIR CONDITIONING DEVICE
Document Type and Number:
Japanese Patent JP2014167381
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To control suction moist with high controllability in using R32 as a refrigerant, in an air conditioning device having a refrigerant circuit that is provided with expansion valves at an upstream side and a downstream side of a receiver and injects a gas refrigerant from the receiver to a compressor.SOLUTION: In an air conditioning device 1, degassing control is executed to guide a gas refrigerant from a receiver 25 to a suction side of a compressor 21 through a receiver degassing pipe 30 by opening a receiver degassing valve 30a; upstream-side expansion valve supercooling degree control is executed to change openings of upstream-side expansion valves 24, 26 so that a supercooling degree of the refrigerant at outlets of radiators 23, 41 is kept at a target supercooling degree; and further downstream-side expansion valve suction moist control is executed to change openings of downstream-side expansion valves 26, 24 so that a dryness degree of the refrigerant is kept at a target dryness degree in a state that the refrigerant at the outlets of evaporators 41, 23 is moist.
Inventors:
YUMOTO KOMEI
KANAZAWA YUKAKO
HOSHIKA KEITARO
SHIMODA JUNICHI
KANAZAWA YUKAKO
HOSHIKA KEITARO
SHIMODA JUNICHI
Application Number:
JP2013226155A
Publication Date:
September 11, 2014
Filing Date:
October 31, 2013
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B43/00; F25B1/00
Domestic Patent References:
JPH09210491A | 1997-08-12 | |||
JP2001065953A | 2001-03-16 | |||
JP2001194015A | 2001-07-17 | |||
JP2012193897A | 2012-10-11 | |||
JP2001227822A | 2001-08-24 | |||
JP2001295762A | 2001-10-26 | |||
JP2002089988A | 2002-03-27 | |||
JP2001221526A | 2001-08-17 | |||
JPS5449661A | 1979-04-19 |
Attorney, Agent or Firm:
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