US 12,281,812 B2
Duct control apparatus
Takuma Aoshima, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/800,934
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Mar. 4, 2020, PCT No. PCT/JP2020/009221
§ 371(c)(1), (2) Date Aug. 19, 2022,
PCT Pub. No. WO2021/176607, PCT Pub. Date Sep. 10, 2021.
Prior Publication US 2023/0084996 A1, Mar. 16, 2023
Int. Cl. F24F 11/74 (2018.01); F24F 13/14 (2006.01)
CPC F24F 11/74 (2018.01) [F24F 13/14 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A duct control apparatus for controlling a motor to control opening and closing of a duct opening and closing damper provided in a duct for sending air from an air conditioner to a room, the apparatus comprising:
a power supply board to receive commercial power;
a motor board to control the motor based on the commercial power received by the power supply board; and
a control board to control the motor board based on the commercial power received by the power supply board, wherein
the motor board performs, for the motor, control of the opening and closing of the duct opening and closing damper and control for adjusting a degree of opening of the duct opening and closing damper,
the power supply board, the motor board, and the control board are provided in a single unit,
the motor board has a function of controlling a plurality of motors,
when a power capacity of the motor board is lower than a predetermined capacity for causing to cause respective motors that control a plurality of duct opening and closing devices dampers to simultaneously drive, the plurality of duct opening and closing devices dampers to open or close a plurality of ducts, the motor board
for each duct opening and closing damper among the plurality of duct opening and closing dampers, determines whether the duct opening and closing damper is closed, and performs control for causing only the duct opening and closing damper determined to be closed to operate among the plurality of duct opening and closing dampers, the control being performed for a motor corresponding to the duct opening and closing damper determined to be closed among the plurality of motors.