离心风机内部导流挡板结构优化设计  

Optimization design for deflector baffle of centrifugal fan

作　　者：叶剑 梁之博 胡杨 周伟峰 林辉 谭海辉 YE Jian;LIANG Zhibo;HU Yang;ZHOU Weifeng;LIN Hui;TAN Haihui(Vatti Corporation Limited,ZhongShan,528415;University of Electronic Science and Technology of China,Zhongshan Institute,Zhongshan,528400)

机构地区：[1]华帝股份有限公司,广东中山528415 [2]电子科技大学中山学院,广东中山528400

出　　处：《家电科技》2023年第4期22-26,共5页Journal of Appliance Science & Technology

基　　金：华帝股份有限公司技术研究项目(THX2023080301)。

摘　　要：针对离心风机内部的导流挡板的3个结构参数,水平夹角θ、长度L、通孔直径D,采用响应面方法设计了不同参数组合的方案,并得到了2组优化方案;采用RNG k-ε湍流模型来模拟离心风机的内部流动;采用试验测试方法来验证离心风机的出风均匀性及噪声性能。结果表明:夹角θ对出风均匀性的影响最显著;优化方案1的出风均匀性及气动噪声性能最佳,此时θ=33.06°、L=43.33 mm、D=4.67 mm,出风口各测点的风速值标准差σ由初始方案的1.42降低至0.65,降幅54%;实测噪声值由初始方案的43.6 dB(A)降低至40.2 dB(A),降幅为7.8%。因此,优化导流挡板的结构参数可有效改善离心风机的内部流动状态,提升离心风机的出风均匀性及气动噪声性能。According to the three structural parameters of the baffle inside the centrifugal fan,including the horizontal Angleθ,the length L and the through-hole diameter D,the response surface method was used to design different parameter combination schemes,and two groups of optimization schemes were obtained.RNG k-εturbulence model is used to simulate the internal flow of centrifugal fan.The test method is used to verify the uniformity and noise performance of centrifugal fan.The results show that the influence of Angleθon the uniformity of air discharge is the most significant.In optimization scheme 1,the air outlet uniformity and aerodynamic noise performance are the best.At this time,θ=33.06e,L=43.33 mm,D=4.67 mm,and the standard deviationσof wind speed value at each measuring point of outlet decreases from 1.42 to 0.65,with a decrease of 54%.The measured noise value is reduced from 43.6 dB(A)to 40.2 dB(A),with a decrease of 7.8%.Therefore,optimizing the structural parameters of the baffle can effectively improve the internal flow state of the centrifugal fan,improve the uniformity of the outlet air and aerodynamic noise performance of the centrifugal fan.

关 键 词：离心风机 导流挡板 出风均匀性 噪声性能 响应面 优化设计 

分 类 号：TM925[电气工程—电力电子与电力传动]