Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/228353
Kind Code:
A1
Abstract:
This air conditioning device comprises: a refrigerant circuit in which a refrigerant circulates, and a control device that controls the refrigerant circuit. The refrigerant circuit includes: a main circuit in which a compressor, a first open/close valve, a reheater, a first expansion valve, and an evaporator are sequentially linked by main piping; a cooling circuit in which a second open/close valve, a condenser, and a second expansion valve are sequentially linked by cooling piping connecting an area spanning from between the compressor and the first open/close circuit to between the first expansion valve and the evaporator; and a bypass circuit including bypass piping bypass piping connecting an area spanning from a discharge side of the compressor to between the reheater and the first expansion valve, and a third open/close valve that opens and closes the bypass piping. The reheater and the evaporator are disposed in an air conditioning space, and the condenser is disposed outside of the air conditioning space. The control device, before switching operation to a cooling operation for cooling the air in the air conditioning space or to a dehumidifying operation for dehumidifying the air in the air conditioning space, performs operation switching control in which the first open/close valve and the second open/close valve are set to an open state, the third open/close valve is set to a closed state, and the first expansion valve is used to control overheating of an intake side of the compressor and the second expansion valve is used to control overcooling of the condenser.
Inventors:
KOJIMA TOMONORI (JP)
SAIKA TATSUYA (JP)
SAIKA TATSUYA (JP)
Application Number:
PCT/JP2022/021540
Publication Date:
November 30, 2023
Filing Date:
May 26, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B29/00
Domestic Patent References:
| WO2020144738A1 | 2020-07-16 |
Foreign References:
| JPS572363U | 1982-01-07 | |||
| CN112857018A | 2021-05-28 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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