用于气动工具的新型干涉式消声器设计与.pdfVIP

第 39 卷 2011 年第 4 期 　 辑 编 目 栏 本 用于气动工具的新型干涉式 民 文 李 消声器设计与研究 1 1 1 2 袁卉平 ，高中庸 ，胡志成 ，梁明辉 1广西工学院机械工程系 广西柳州 545006 2河海大学机械工程学院 摘要：鉴于传统干涉式消声器消声频率范围窄，仅在抵消频率处及附近具有极高的消声量，当噪声的 采 幅值频率远远偏离抵消频率时，其消声量急剧下降等缺点，设计了一种新型干涉式消声器。该消声器 适用于高速气流冲击而引起的噪声，由于是运用气体对撞原理，故不用过多地考虑噪声的频率，适用 掘 于各个频率段，适用范围广泛。试验表明，在不影响气动工具工作性能的前提下，该消声器可降噪 10～12 dB，具有很好的应用价值。 关键词：气动工具；消声器；气体对撞；干涉 中图分类号：TB535 文献标识码：A 文章编号：1001-3954(2011)04-0030-05 Design and study of new-type interfered muffl er used for pneumatic tools YUAN Huiping1，GAO Zhongyong1，HU Zhicheng1，LIANG Minghui2 1Mechanical Engineering Dept., Guangxi University of Technology, Liuzhou 545006, Guangxi, China 2School of Mechatronic Engineering, Hohai University Abstract ：The traditional interfered muffler has narrow noise elimination frequency range, and has large noise elimination volume only at the frequency contracting point and its neighborhood. When noise frequency is far lower than contracting frequency, the noise elimination volume falls rapidly. In view of the defect, a new-type interfered muffler is designed, which is suitable for noise caused by high speed gas flow. As it is constituted based on the principle of gas collision, noise frequency is not need to take into account too much