The silencing device comprises a shell and a control body arranged in the shell, a cavity is formed in the shell, an opening is formed in the shell, the control body comprises a rotating body and a rotating shaft, specifically, the rotating shaft is coaxially connected to the end of the rotating body, the rotating body is arranged in the cavity, a baffle is arranged on the outer side wall of the rotating body, and the rotating body is arranged in the cavity. A resonant cavity is formed among the baffle, the outer side wall of the rotating body and the inner side wall of the cavity, the resonant cavity is communicated with the opening, the size of the opening is the same as that of the resonant cavity, and therefore the resonant cavity forms a quarter-wave tube. Therefore, the change of the axial length of the quarter-wavelength tube is converted into the change of the arc length in the space, the length of the quarter-wavelength tube can be greatly changed under the condition that the occupied space volume is not changed, and the silencing frequency of the silencing device is favorably changed.
本发明公开了一种消声装置及车轮,包括壳体和设于壳体内的控制体,其中,壳体内设有腔室,壳体上设有开口,控制体包括旋转体和旋转轴,具体地,旋转轴同轴连接于旋转体的端部,旋转体设于腔室内,旋转体的外侧壁上设有挡板,挡板、旋转体的外侧壁与腔室的内侧壁之间会形成共振腔,共振腔与开口连通,开口的尺寸与共振腔的尺寸相同,由此,该共振腔便形成了一个四分之一波长管。由此,本申请通过将四分之一波长管轴向长度上的改变转换为空间中圆弧长度的改变,在占用的空间体积不变的情况下,却可以极大的改变四分之一波长管的长度,有利于改变消声装置的消声频率。
Silencing device and wheel
一种消声装置及车轮
01.12.2023
Patent
Elektronische Ressource
Chinesisch