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发明公开
CN104976159A 鼓风机及涡流噪音降低方法 有权 复审申请

鼓风机及涡流噪音降低方法
摘要：
本发明公开了一种鼓风机及涡流噪音降低方法，该鼓风机包括扇框、扇轮、至少一感应元件及线圈。扇框具有入风口及出风口。扇轮设置于扇框内并具有轮毂及连接至轮毂的周缘的多个扇叶。感应元件固定至对应的设置于扇叶。线圈设置于扇框，并用以驱动至少一感应元件，使对应该感应元件的该扇叶往复摆动来产生振动声响，使得振动声响与扇轮于转动时所产生的涡流噪音相互抵消。此外，一种涡流噪音降低方法适用于鼓风机。可依照涡流噪音的频率、振幅及相位，往复摆动鼓风机的扇轮的至少一扇叶来产生振动声响，其中振动声响与涡流噪音具有相同的频率及振幅，且振动声响与涡流噪音具有相反的相位，使得振动声响与扇轮于运转时所产生的涡流噪音相互抵消。
摘要（英）：

The invention discloses an air blower and an eddy noise reduction method. The air blower comprises a fan frame, a fan wheel, at least one sensing element and a coil. The fan frame is provided with an air inlet and an air outlet. The fan wheel is arranged in the fan frame and provided with a hub and multiple fan blades connected to the periphery of the hub. The sensing elements are fixed to the corresponding fan blades. The coil is arranged on the fan frame and used for driving at least one sensing element so that the fan blade corresponding to the sensing element can swing in a reciprocating mode to generate a vibrating sound, and the vibrating sound and eddy noise generated when the fan wheel rotates can be offset. In addition, the eddy noise reduction method is suitable for the air blower. At least one fan blade of the fan wheel of the air blower can be made to swing in the reciprocating mode to generate the vibrating sound according to the frequency, amplitude and phase of the eddy noise, and the vibrating sound and the eddy noise have the same frequency and amplitude and reverse phases, so that the vibrating sound and the eddy noise generated when the fan wheel rotates are offset.

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