离心风机蜗壳声腔共振声学特性研究  

On the Acoustic Characteristics during Acoustic-Cavity Resonance in the Volute Casing of a Centrifugal Fan

作　　者：黄其柏[1] 卢文祥[1] 王雪川[1] 师汉民[1] 

机构地区：[1]华中理工大学机械科学与工程学院

出　　处：《华中理工大学学报》1995年第11期37-40,共4页Journal of Huazhong University of Science and Technology

基　　金：国家教委博士点基金

摘　　要：根据蜗壳声腔基频共振的声学特点，将其简化为一集中阻抗系统，得到了蜗壳结构的等效声学模型。在此基础上，推导了蜗壳基频共振频率及共振噪声辐射数学模型，并进行了试验分析与理论计算。The volute casing of a centrifugal fan is simplified to a lumpedimpedance system according to its acoustic features during acoustic-cavity resonance at thefundamental frequency.An equivalent acoustic model is developed and mathematical modelsfor the volute casing at the fundamental resonant frequency and in the case of resonance noiseradiation brought about are then studied.Results of experimental and theoretical calculationconcerning the volute casing of an air-conditioner worm are found to be in fairly good agree-ment with each other.

关 键 词：蜗壳 共振频率 声辐射 离心式风机 鼓风机 

分 类 号：TH442[机械工程—机械制造及自动化]