| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation device which can improve accuracy of motor control.SOLUTION: A ventilation device is provided which includes: an inside air passage having a suction port in which room air is sucked; a fan provided at the inside air passage, for sucking the room air from the suction port and for generating a flow in the air of the inside air passage; a motor, which is the motor for driving the fan, having a stator which has a coil and a rotor which has a magnet and a rotary shaft for transmitting torque to the outside; an exhaust air passage provided on the downstream of the fan and for exhausting the room air to the outside of the room; and a control device, which is the control device for controlling the operation of the motor, for correcting rotational frequency of the motor according to a current flowing in the motor when a voltage is supplied to the motor in a predetermined state.SELECTED DRAWING: Figure 2 |
