无蜗壳风机集流器间隙不对称对风机性能的影响  

Effect of Collector Asymmetric Clearance of Centrifugal Fans without Housing on Fan Performance

作　　者：邵根强 祝福剑 孔万敏 黄福兴 李哲弘 Gen-qiang Shao;Fu-jian Zhu;Wan-min Kong;Fu-xing Huang;Zhe-hong Li(Zhejiang Mingzhen Electric&Electronic Co.,Ltd.;Taizhou University)

机构地区：[1]浙江铭振电子股份有限公司 [2]台州学院智能制造学院

出　　处：《风机技术》2024年第6期38-42,共5页Chinese Journal of Turbomachinery

基　　金：浙江省省级产学合作协同育人项目——基于地方产业的《流体机械原理与设计》课程改革(浙教办函【2023】241号)。

摘　　要：离心通风机集流器与进风口之间的空隙会影响气流的进入方式和速度分布,进而影响风机性能。目前关于集流器安装不对称导致的间隙不对称对风机性能影响的研究较少。本文对无蜗壳离心通风机进行数值模拟与试验研究,分析集流器间隙不对称对风机流场的影响,得出集流器在非对称安装的情况下会导致叶道内出现旋转失速现象,径向面叶道内的旋转失速现象在靠近轮盖处更明显,涡流团在单独叶道内出现,然后随着旋转方向传播。The clearance between collector and inlet of centrifugal fan affect the airflow intake and velocity distribution,and further affect the performance of the fan.At present,there are few researches on the effect of asymmetry clearance caused by asymmetric collector installation on fan performance.In this paper,a centrifugal fan without housing is studied by numerical simulation and experiment for analyzing the difference and influence of the asymmetry clearance on the fan flow field.When the collector is installed asymmetrical,the rotating stall phenomenon occurs in the impeller passage,and more obvious in the area close to the wheel cover.Vortex flow appears in a single impeller passage and spreads along with the rotation direction.

关 键 词：无蜗壳风机 集流器 安装位置 间隙不对称 数值模拟 风机性能 

分 类 号：TH432[机械工程—机械制造及自动化]