流体机械2024，Vol.52Issue(6)：41-48,8.DOI:10.3969/j.issn.1005-0329.2024.06.006
多翼离心风机集流器偏心安装对空调新风系统风量的影响
Study on the effect of eccentric installation of multi-blade centrifugal fan collector on air volume in air conditioning fresh air system
摘要
Abstract
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 angle θ=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.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Key words
multi-blade centrifugal fan/numerical simulation/flow collector/CFD/eccentric installation分类
机械制造引用本文复制引用
李树云,单联瑜,吴俊鸿,彭光前,张晓轩,叶建军,谢军龙..多翼离心风机集流器偏心安装对空调新风系统风量的影响[J].流体机械,2024,52(6):41-48,8.基金项目
国家自然科学基金项目(51976067) （51976067）
