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Title:
AIR-CONDITIONING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/005657
Kind Code:
A1
Abstract:
This air-conditioning apparatus provided with an outdoor unit that has a compressor and an outdoor heat exchanger and that takes in outdoor air from an outdoor space and discharges the outdoor air to the outdoor space and an indoor unit that has a first expansion valve, a first indoor heat exchanger, and a second indoor heat exchanger and that takes in indoor air from an indoor space and supplies the indoor air to the indoor space, is provided with: a second expansion valve provided to the outdoor unit or the indoor unit; a refrigerant circuit in which the compressor, the second indoor heat exchanger, the first expansion valve, the first indoor heat exchanger, the second expansion valve, and the outdoor heat exchanger are sequentially connected to each other by a pipe; an absorption/desorption device having a absorption member that absorbs moisture in the air; and a controller that controls the degrees of opening of the first expansion valve and the second expansion valve. The indoor unit has formed therein an air passage through which the indoor air taken into the inside passes. The first indoor heat exchanger, the absorption/desorption device, and the second indoor heat exchanger are arranged on the air passage. The second indoor heat exchanger is disposed on the downstream side of the first indoor heat exchanger. The absorption/desorption device is disposed on the downstream side of the first indoor heat exchanger and on the upstream side of the second indoor heat exchanger. The controller controls the degrees of opening of the first expansion valve and the second expansion valve, is provided with a heating absorption mode for absorbing moisture in the indoor air by the absorption/desorption device and a heating desorption mode for desorbing the absorbed moisture, and performs humidification control by switching between these modes.

Inventors:
ITO SHINICHI (JP)
TOYOSHIMA MASAKI (JP)
Application Number:
PCT/JP2019/026863
Publication Date:
January 14, 2021
Filing Date:
July 05, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F11/70; F24F11/65; F24F11/86; F25B29/00; F24F110/10; F24F110/20; F24F120/10; F24F140/20
Domestic Patent References:
WO2008117817A12008-10-02
WO2014118871A12014-08-07
WO2017029741A12017-02-23
Foreign References:
JP2007240128A2007-09-20
JP2009068802A2009-04-02
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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