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发明授权
CN104976159B 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）：

A blower and a method for decreasing eddy noise are provided. The blower includes a fan frame, a fan wheel, at least one induction element and a coil. The fan frame has in inlet and an outlet. The fan wheel is disposed in the fan frame and has a wheel hub and a plurality of fan blades connected to periphery of the wheel hub. The induction elements are fixed to the corresponding fan blades, the coil is disposed on the fan frame for driving the at least one induction element, such that the fan blade corresponding to the induction element swing back and forth to generate a vibration sound, and the vibration sound is counteracted with eddy noise generated when the fan wheel rotates. Moreover, the method for decreasing eddy noise is also provided.

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