流体机械2025，Vol.53Issue(8)：68-76,9.DOI:10.3969/j.issn.1005-0329.2025.08.009
壁挂式空调新风模块多翼离心风机叶轮气动性能研究
Study on the aerodynamic performance of impellers in multi-wing centrifugal fans of wall-mounted air conditioning fresh air modules
摘要
Abstract
In view of the problems of high noise and poor acoustic performance in the fresh air system of air conditioners,this study takes the fresh air system of a centrifugal fan for air conditioners as the research object and conducts research and analysis on the layered structure of centrifugal fan blades.Adopting the method combining numerical simulation and orthogonal experiments,the effects of the blade height ratio of upper and lower layers,the offset angle of upper and lower blades,and the number of lower-layer blades on the aerodynamic performance of the centrifugal fan were analyzed.The research results show that the main parameters affecting the flow rate of the fan system,in order of significance,are the blade height ratio,offset angle,and number of blades.By optimizing these impeller structural parameters,the flow field in the flow passages between blades near the rear plate and at the volute bottom can be effectively improved,thereby enhancing the aerodynamic performance.Specifically,when the blade height ratio,offset angle,and number of lower-layer blades are adjusted to 4.5,3.5°,and 57 respectively,the air volume increases by 6%at the same rotational speed,while the total noise level remains comparable.Furthermore,the low-frequency broadband noise(0～600 Hz)is reduced by 2.1 dB(A),and the cavity noise is significantly attenuated.The research results can provide a reference for the aerodynamic optimization and noise reduction design of similar fresh air products.关键词
新风模块/正交试验/双层风叶/噪声品质Key words
fresh air module/orthogonal experiment/double blade/noise quality分类
通用工业技术引用本文复制引用
高旭,李必平,熊军,王子涛,张明慧..壁挂式空调新风模块多翼离心风机叶轮气动性能研究[J].流体机械,2025,53(8):68-76,9.基金项目
2024年度中山市揭榜制重大科技创新合作项目(2024A1024) （2024A1024）
