AIR CONDITIONING DEVICE

WIPO Patent Application WO/2023/074621

A1

Provided is an air conditioning device that enables suitable control of the degree of opening of an electronic expansion valve in an indoor unit during a reheating dehumidification operation. An air conditioning device (1) comprises a refrigerant circuit (100) and a control unit (6). In the refrigerant circuit (100), there are a compressor (21), an outdoor heat exchanger (24), a first indoor heat exchanger (311), an indoor expansion valve (32), and a second indoor heat exchanger (312), which are connected in a ring. Controlling the refrigerant circuit (100), the control unit (6) executes a first operation for causing the outdoor heat exchanger (24) and the first indoor heat exchanger (311) to function as a condenser and causing the second indoor heat exchanger (312) to function as an evaporator. The indoor expansion valve (32) has a main valve body (322) and a sub valve body (323) for adjusting the degree of opening of the indoor expansion valve (32). The main valve body (322) has a greater flow rate control range than the flow rate control range of the sub valve body (323). When executing the first operation, the control unit (6) controls the indoor expansion valve (32) to adjust the degree of opening with the sub valve body (323) so that the refrigerant at the outlet of the second indoor heat exchanger (312) attains a wet state.

MORIYA SATONO
FUJIOKA YUUKI
ITOU HIROSHI

PCT/JP2022/039522

May 04, 2023

October 24, 2022

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DAIKIN IND LTD (JP)

F25B29/00; F25B1/00; F25B41/35; F25B49/02

JP2020034140A	2020-03-05
JPH06272973A	1994-09-27
JP2012057894A	2012-03-22
JPS6375449A	1988-04-05
JP2002098430A	2002-04-05

SHINJYU GLOBAL IP (JP)

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