师铜墙,袁民建,顾媛媛,祁大同
SHI Tong-qiang,YUAN Min-jian,GU Yuan-yuan,QI Da-tong(Xi'an Jiaotong University

• 1:西安交通大学

摘要(Abstract)：

针对T9-19No.4A前向离心风机,使用等距串列叶片叶轮和不等距串列叶片叶轮取代原叶轮进行降噪试验研究,并对使用不同叶轮时风机的气动性能和噪声特性进行了比较分析。试验结果表明:使用等距串列叶片叶轮能够使风机在保持气动性能基本不变的条件下,在风机高效点附近的工况范围内降低前向离心风机的气动噪声,而使用不等距串列叶片叶轮则使风机气动性能和噪声特性均变差,主要原因之一是由于叶轮叶片沿圆周不均匀分布导致叶轮流场沿周向分布不均匀。建议在进一步的改进研究中仍可考虑使用等距串列叶片叶轮而暂不考虑使用不等距串列叶片叶轮。
Experimental study on noise reduction using tandem blade impeller has been carried out to a forward-curved-blade centrifugal fan.Aerodynamic performance and noise characteristics of the fan with different impeller,i.e.the original impeller,the tandem iso-spacing blade impeller and the tandem non iso-spacing blade impeller,are compared.Results show that the tandem iso-spacing blade impeller can reduce fan noise while keeping the fan aerodynamic performance at the operation range around the highest efficiency point.However,the tandem non iso-spacing blade impeller makes both aerodynamic performance and noise characteristics of the fan becoming worse.The main reason is that the non iso-spacing blade impeller leads to uneven flow distribution along the circumferential direction at the impeller outlet.Therefore,the iso-spacing blade impeller is preferred to the non iso-spacing blade impeller in the further study of fan noise reduction by means of the tandem blade impeller.

关键词(KeyWords)： 前向离心风机;降噪;串列叶片叶轮;气动性能
centrifugal fan with forward-curved blades;noise reduction;tandem blade impeller;aerodynamic performance.

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 师铜墙,袁民建,顾媛媛,祁大同
SHI Tong-qiang,YUAN Min-jian,GU Yuan-yuan,QI Da-tong(Xi'an Jiaotong University

参考文献(References)：

• [1]Liu Qiuhong,Qi Datong,Mao Yijun.Numerical cal-culation of centrifugal fan noise[A].Proceedings ofthe Institution of Mechanical Engineers,Part C-Jour-nal of Mechanical Engineering Science[C].2006,220(8):1167-1178.
• [2]刘秋洪.离心通风机气动噪声数值分析方法的研究及工程应用[D].西安:西安交通大学,2007.
• [3]毛义军,祁大同,刘秋洪.基于非定常流场的离心风机气动噪声分析[J].西安交通大学学报,2005,39(9):123-127.
• [4]黄东涛,边晓东,唐旭东等.长短叶片开缝技术在离心风机设计中的应用[J].清华大学学报,1999,39(4):6-9.
• [5]王宝潼,张楚华,席光等.串列叶片式离心叶轮内流场的数值研究[J].西安交通大学学报,2007,41(11):1275-1278.
• [6]刘晓良,祁大同,毛义军等,串列叶片式前向离心风机气动与噪声特性的优化研究[J].应用力学学报,2009,26(1):40-44
• [7]马建峰.T9-19系列小型号离心风机的降噪研究[D].西安:西安交通大学,2008.
• [8]GB/T1236-85通风机空气动力性能试验方法[S].
• [9]GB/T2888-91风机和罗茨鼓风机噪声测量方法[S].