Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/144738
Kind Code:
A1
Abstract:
This air conditioner has a refrigerant circuit through which a refrigerant circulates and a control device for controlling the refrigerant circuit. The refrigerant circuit includes: a main circuit in which a compressor, a reheater, a first expansion valve, and an evaporator are connected in order with main piping; and a cooling circuit in which a cooling on-off valve, a condenser, and a second expansion valve are connected by cooling piping that leads from between the compressor and the reheater to between the first expansion valve and the evaporator. The reheater and the evaporator are disposed in an air-conditioned space, and the condenser is disposed outside of the air-conditioned space. During dehumidification operation, the control device controls the cooling on-off valve or the second expansion valve according to the result of the determination that used an external solution temperature, if the amount of overcooling by the reheater is outside the appropriate range for the amount of refrigerant. Moreover, during cooling operation, the control device controls a main circuit reheating on-off valve or the first expansion valve according to the result of the determination that used an internal solution temperature, if the amount of overcooling by the condenser is outside the appropriate range for the amount of refrigerant.
Inventors:
KOJIMA TOMONORI (JP)
ISHIKAWA TOMOTAKA (JP)
SAIKA TATSUYA (JP)
OKAJIMA KEIGO (JP)
NOMOTO SO (JP)
ISHIKAWA TOMOTAKA (JP)
SAIKA TATSUYA (JP)
OKAJIMA KEIGO (JP)
NOMOTO SO (JP)
Application Number:
PCT/JP2019/000198
Publication Date:
July 16, 2020
Filing Date:
January 08, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F11/36; F25B29/00; F24F11/86; F25B1/00; F25B49/02; F24F140/20
Foreign References:
| JPH09257333A | 1997-10-03 | |||
| JPS572363U | 1982-01-07 | |||
| JPH05312428A | 1993-11-22 | |||
| JPH04369370A | 1992-12-22 | |||
| JP2012127519A | 2012-07-05 | |||
| JP2001082761A | 2001-03-30 | |||
| JPH09318205A | 1997-12-12 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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