Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/270410
Kind Code:
A1
Abstract:
Proposed is an air conditioning device which can perform dehumidification with high accuracy during a re-heat dehumidification operation. This air conditioning device 1 executes an air conditioning operation and comprises a refrigerant circuit (100) and a control unit (6). The refrigerant circuit (100) is formed by annularly connecting a compressor (21), a heat source heat exchanger (24), a first usage heat exchange unit (311), a usage expansion valve (32), and a second usage heat exchange unit (312). The control unit (6) controls the refrigerant circuit (100) to execute a re-heat dehumidification operation for causing the first usage heat exchange unit (311) to function as a condenser and causing the second usage heat exchange unit (312) to function as an evaporator. The control unit (6) controls the usage expansion valve (32) during the re-heat dehumidification operation in an opening range in which the refrigerant flow rate is less than or equal to 50% of the maximum flow rate. The average amount of change in the flow rate in a unit operation amount on the usage expansion valve (32) in said opening range is less than 1.84 L/min.
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| JP2002195668 | REFRIGERATOR |
| WO/2002/059532 | AIR CONDITIONER AND HEAT PUMP WITH DEHUMIDIFICATION |
| JPS6091159 | AIR-COOLING REFRIGERATOR |
Inventors:
MORIYA SATONO
ITOU HIROSHI
UGAI KOUJI
FUJIOKA YUUKI
ITOU HIROSHI
UGAI KOUJI
FUJIOKA YUUKI
Application Number:
PCT/JP2022/024148
Publication Date:
December 29, 2022
Filing Date:
June 16, 2022
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B5/04; F25B6/04; F25B29/00
Domestic Patent References:
| WO2018037545A1 | 2018-03-01 |
Foreign References:
| JP2006064257A | 2006-03-09 | |||
| JP2020070986A | 2020-05-07 | |||
| JP2003185219A | 2003-07-03 | |||
| JP2003314854A | 2003-11-06 | |||
| CN112747358A | 2021-05-04 |
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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