| 摘要 |
PURPOSE: An air blower apparatus is provided to reduce noise by lowering the characteristic vibration frequency of axial fan and rotor system to the level lower than the operation band. CONSTITUTION: An air blower apparatus comprises an axial fan(6) including a hub(2), and a plurality of blades(4) arranged along the circumference of the hub; a fan motor including a rotor(8) which rotates so as to provided rotating force to the axial fan, and a stator(10); a rotating shaft(14) connected between the hub and the rotor, and which transfers the rotating force of the fan motor to the axial fan; a first vibration reduction unit interposed between the rotating shaft and the hub, and which reduces the characteristic vibration frequency of the axial fan during rotation; and a second vibration reduction unit interposed between the rotor and the rotating shaft, and which reduces the characteristic vibration frequency of the rotor. |
