| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an operation controller of a range hood configured to prevent damage due to an abnormal torsional torque to be generated in a fan or a motor shaft without abruptly increasing the rotation speed of an electric motor or the motor shaft when an operation button for a higher speed is operated immediately after one operation button of a switch is operated. <P>SOLUTION: The range hood is configured to collect the air in a hood 1 to be discharged to the outside by rotating a fan 12 attached to a motor shaft 11a of an electric motor 11. A motor control device 30 for controlling drive of the electric motor 11 controls the electric motor 11 in an operation state for a middle operation signal after reaching an operation state for a weak operation signal when a weak button 21 of a switch 20 for selecting an operation state of the range hood is operated, to input the weak operation signal, immediately after that, a middle button 22 for a higher speed is operated to input the middle operation signal, thereby preventing the rotation of the electric motor 11 from being abruptly changed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
