US 12,264,847 B2
Multi-split type air-conditioning device and connection determination method
Shogo Tamaki, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 18/251,168
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Mar. 10, 2021, PCT No. PCT/JP2021/009414
§ 371(c)(1), (2) Date Apr. 28, 2023,
PCT Pub. No. WO2022/190229, PCT Pub. Date Sep. 15, 2022.
Prior Publication US 2024/0328671 A1, Oct. 3, 2024
Int. Cl. F24H 15/10 (2022.01); F24F 11/50 (2018.01); F24F 11/65 (2018.01); F24H 15/238 (2022.01)
CPC F24H 15/10 (2022.01) [F24F 11/50 (2018.01); F24F 11/65 (2018.01); F24H 15/238 (2022.01)] 12 Claims
OG exemplary drawing
 
1. A multi-split type air-conditioning device comprising:
an indoor hot water unit including a water circuit in which a water medium circulates as a heat exchange medium;
an indoor air unit including an air heat exchanger; and
an outdoor unit to which the indoor hot water unit and the indoor air unit are connected,
wherein the outdoor unit includes:
branch ports beside which pressure reduction mechanisms are disposed after a branch of a refrigerant circuit and to which the indoor air unit and the indoor hot water unit are connected through pipes; and
an outdoor unit-control unit configured to control the refrigerant circuit and transmit control commands for the indoor hot water unit and the indoor air unit via transmission signal lines, and
wherein the outdoor unit-control unit executes an indoor hot water unit-determination process of causing the refrigerant circuit to perform a heating operation, and determining the branch port to which the indoor hot water unit is connected and an indoor air unit-determination process of causing the refrigerant circuit to perform a cooling operation, and determining a connection relationship between the branch port to which the indoor air unit is connected and the indoor air unit.