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US 8,801,390 B2Granted
Fan control system and air conditioner that includes the same
AssigneeDaikin Industries, Ltd.
InventorsToshiaki Sato, Hiroshi Doumae, Sumio Kagimura
Life of this patent
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Abstract
A fan control system includes a first fan, a second fan that is adjacent to the first fan, a first motor that is configured to rotate the first fan, a second motor that is configured to rotate the second fan, and a control unit. The control unit is configured to control the rotational speeds of the first motor and the second motor, and to decrease the rotational speeds of both the first motor and the second motor when the rotational speed of the first motor must be decreased.
Claims9
A fan control system comprising:
- a first fan;
- a second fan adjacent to the first fan;
- a first motor configured to rotate the first fan;
- a second motor configured to rotate the second fan;
- and
- a control unit configured to control rotational speeds of the first motor and the second motor,
- the control unit being configured to detect an abnormality in the first motor,
- the control unit stopping both operation of the first motor and operation of the second motor in response to the abnormality being detected by the control unit,
- the control unit including
- inverter circuits configured to control rotational speeds of the first motor and the second motor to stop the operation of the first motor and the operation of the second motor in response to the abnormality being detected by the control unit, and
- drive circuits configured to input drive signals to the inverter circuits,
- the control unit being configured to input the drive signals to the inverter circuits such that the first motor and the second motor reach respective prescribed rotational speeds via the drive circuits.
9 more elements
Dependencies are inferred from the claim text.