风机排风口L型消声器的设计及仿真  

Design and simulation of L-type muffler for fan exhaust outlet

作　　者：李达 阮学云[1] 吴启富 LI Da;RUAN Xueyun;WU Qifu

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001 [2]南京开拓环保科技技术有限公司,江苏南京210000

出　　处：《现代机械》2021年第4期50-53,共4页Modern Machinery

摘　　要：分析收尘器排风口的噪声特性,并根据现场风机主要噪声频率段设计出口消声器,并与风机出口常见两种类型消声器进行对比,最后通过LMS Virtual lab仿真及实验验证得出:采用L型组合式消声器可以有效地降低风机出口噪声,风机出口测点的降噪量达到23.9 dB(A)。This paper analyzes the noise characteristics of the dust collector exhaust outlet,and designs the outlet muffler according to the main noise frequency band of the fan.The designed muffler is compared with two common types of fan outlet mufflers.Through LMS Virtual lab simulation and experiment,it is verified that the use of the L-type muffler can effectively reduce the noise at the fan outlet,and the noise reduction level reaches 23.9 dB(A).

关 键 词：风机噪声 阻性消声器 降噪设计 仿真 有限元法 

分 类 号：X593[环境科学与工程—环境工程]