环状叶轮轴流风扇的气动性能和噪声研究

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关键词：轴流风扇；环状叶轮；气动性能；气动噪声

中图分类号：TH432.1;TK05文献标志码：A

DOI：10.7652/xjtuxb202509017 文章编号：0253-987X（2025）09-0177-10

Study on the Aerodynamic Performance and Noise of Annular Impeller Axial Fans

WU Xianpeng1，WEI Lai²，LUO Dan²，KANG Ruixiang²，LIU Xiaomin1 （1.School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 710049，China；2.Guangdong Midea Environmental Electrical Appliance Manufacturing Co.，Ltd.，Guangdong，Zhongshan 528425，China）

Abstract： To enhance the aerodynamic performance of axial fans and reduce their operational noise，inspired by the structure of annular propellers， this study proposes a novel annular impeller design for axial impellers used in fans，along with its parameter design process and methodology. By extracting the basic parameters of the prototype impeller profile and adjusting the basic shape of the impeller，the blade section is geometrically reconstructed. The design of the annular impeller is completed by smoothly connecting the vortex ring structure at the blade tip.The influence mechanism of the annular impeller on the fan’s aerodynamic performance and noise is studied using numerical simulation methods. The effectiveness of the design of the annular impeller axial fan is validated through experimental testing methods. Simulation results show that the use of the annular impeller improves the pressure distribution on the blade surface and the uniformity of the overall flow field velocity distribution，thereby enhancing the effective air delivery distance of the fan. Moreover， the vortex ring structure effectively suppresses the strength and diffusion range of the blade tip shedding vortex，reducing the turbulence intensity in the main flow area. Experimental results indicate that，compared to the prototype axial fan， under three operating conditions at the same rotational speed，the maximum airflow speed of the annular impeller fan increases while noise and power consumption decrease. Under the same noise condition， the maximum airflow speed of the annular impeller fan increases by 20.0m⋅min-1 with power consumption remaining relatively unchanged. When maintaining the same maximum airflow speed，the noise level of the annular impeller fan is reduced by up to 1.5dB ，with a maximum reduction in power consumption of approximately 13.9% ：

Keywords： axial fan; annular impeller; aerodynamic performance; aerodynamic noise

轴流风机在空调、风扇等通风换气装置中具有广泛应用。（剩余15146字）