摘要
为了研究集流器对多翼离心风机的影响,基于真实空调新风系统模型,构建了空调新风系统多翼离心风机CFD三维模型。对集流器偏心前后的风机内部流场展开分析,最后得出集流器的合理偏心安装方案,并通过试验对其进行了验证。研究结果表明,当偏心角θ=120°,偏心距L=4.2 mm时,风机流道内流动情况得到明显优化,叶道堵塞情况得到改善,叶轮有效通流面积增大,叶轮出口气流速度提升,叶轮与集流器间的泄漏流减少,风机效率有所提升,蜗壳出口处风量提高3 m3/h,增幅约5.6%。研究结果可为多翼离心风机的优化设计提供参考。
In order to study the influence of the collector on the multi-blade centrifugal fan,a three-dimensional CFD model of the multi-blade centrifugal fan in the air conditioning fresh air system was constructed based on the real air conditioning fresh air system model.The internal flow field of the fan before and after the eccentric collector was analyzed.Finally,the reasonable eccentric installation scheme of the collector was obtained,and was verified by experiments.The results show that when the eccentric angleθ=120°and the eccentricity is l=4.2 mm,the flow in the fan channel is obviously optimized,the blockage of the blade channel is improved,the effective flow area of the impeller is increased,the air velocity at the impeller outlet is increased,the leakage flow between the impeller and the collector is reduced,the fan efficiency is improved,and the air volume at the volute outlet is increased by 3 m3/h with an increase of about 5.6%.The research results can provide reference for the optimization design of multi-blade centrifugal fans.
作者
李树云
单联瑜
吴俊鸿
彭光前
张晓轩
叶建军
谢军龙
LI Shuyun;SHAN Lianyu;WU Junhong;PENG Guangqian;ZHANG Xiaoxuan;YE Jianjun;XIE Junlong(Xiaomi Technology(Wuhan)Co.,Ltd.,Wuhan 430000,China;Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《流体机械》
CSCD
北大核心
2024年第6期41-48,共8页
Fluid Machinery
基金
国家自然科学基金项目(51976067)
关键词
多翼离心风机
数值仿真
集流器
计算流体动力学
偏心安装
multi-blade centrifugal fan
numerical simulation
flow collector
CFD
eccentric installation
作者简介
李树云(1988),男,中级职称,主要从事空调风机风道优化设计的研究,E-mail:524087433@qq.com;通信作者:叶建军(1981),男,教授,主要从事流体机械和设备相关的流动机理及应用研究,通信地址:430074湖北省武汉市洪山区珞喻路1037号华中科技大学能源学院,E-mail:hustyjj@hust.edu.cn。
