Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/189383
Kind Code:
A1
Abstract:
This air conditioner using a non‐azeotropic refrigerant mixture suppresses dew generated due to a temperature difference caused inside an evaporator and a refrigerant sound generated by a refrigerant flowing through the evaporator. The air conditioner comprises: a refrigerant circuit (2) in which a compressor (12), an outdoor heat exchanger (13), an indoor-machine side expansion valve (8), and an indoor heat exchanger (7) are sequentially connected and a non‐azeotropic refrigerant mixture is circulated as a refrigerant; a blower (9) that blows air to the indoor heat exchanger (7); and a control unit (3) that controls the opening of the indoor-machine side expansion valve (8) and the air amount of the blower (9). When a dew generation determination means (20), for determining whether dew is generated due to air passed through the indoor heat exchanger (7), determines that the dew is generated in a cooling operation state or a dehumidification operation state, the control unit (3) controls the opening of the indoor-machine side expansion valve (8) or the air amount of the blower (9) to thereby control the degree of dryness of the refrigerant at the outlet side of the indoor heat exchanger (7) so that enthalpy on the outlet side of the indoor heat exchanger (7) decreases.
Inventors:
HIROSAKI YU (JP)
Application Number:
PCT/JP2023/009144
Publication Date:
October 05, 2023
Filing Date:
March 09, 2023
Export Citation:
Assignee:
FUJITSU GENERAL LTD (JP)
International Classes:
F24F11/86; F24F11/74; F25B1/00; F24F140/12; F24F140/20
Domestic Patent References:
| WO2020144738A1 | 2020-07-16 |
Foreign References:
| JP2005147623A | 2005-06-09 |
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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