新能源汽车空调鼓风机气动噪声特性分析及优化  

Analysis and Optimization of Aerodynamic Noise Characteristics of Air Conditioning Blowers for New Energy-source Vehicles

作　　者：王俊杰 黄燕 张凡 王洪强 覃旗开 董大伟[1] WANG Junjie;HUANG Yan;ZHANG Fan;WANG Hongqiang;QIN Qikai;DONG Dawei(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China;South International Air-conditioning Co.,Ltd.,Chongqing 401120,China)

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]上海市动力工程多相流动与传热重点实验室,上海200093 [3]南方英特空调有限公司,重庆401120

出　　处：《噪声与振动控制》2022年第2期134-142,共9页Noise and Vibration Control

基　　金：上海市动力工程多相流动与传热重点实验室开放基金资助项目(KF2019-04)。

摘　　要：由于缺少发动机噪声的覆盖,新能源汽车空调鼓风机产生的气动噪声成为影响乘车舒适性的重要噪声源,主要针对某新能源汽车空调鼓风机系统进行气动噪声特性分析和优化,以适应更加严苛的噪声控制要求。采用ANSYS数值模拟软件和半消声实验室,通过对原始叶轮模型流场和声场的研究分析复杂的轮毂、叶片、气流和结构部件周期性相互作用产生的气动噪声特性,并开展轮毂型线和叶顶弧度对气动噪声的影响研究,其中轮毂型线模型最大可以分别降低43阶次叶频噪声和总声压级5.0 d B和4.2 dB,叶顶弧度模型最大可以分别降低43阶次叶频噪声和总声压级4.0 dB和2.7 dB。研究结果对优化新能源汽车空调鼓风机在受限空间内气动噪声控制具有一定的参考意义。Due to the lack of coverage of engine noise in new energy-source vehicles, the aerodynamic noise generated by air-conditioning blowers has become a vital noise source which deteriorates the ride comfort. In order to meet the more stringent requirements of noise control, the aerodynamic noise generated by the air conditioning blower system in a new energy-source vehicle is analyzed and optimized. By adopting ANSYS numerical simulation software and the semi-anechoic laboratory, the aerodynamic noise induced by complex periodic interaction among the hub, the blades, the air flow and structural components is analyzed by examining the flow field and the sound field. The impact of the hub profile and the radian of blade tips on the aerodynamic noise is investigated. The results demonstrate that the 43-rd order noise and total sound pressure level can be attenuated by 5.0 dB and 4.2 dB respectively through changing the hub profile, while altering the radian of blade tip can reduce the 43-rd order noise and total sound pressure level by 4.0 dB and 2.7 dB respectively. The findings may provide further insight into the optimization of aerodynamic noise for air conditioning blowers confined in new energysource vehicles.

关 键 词：声学 汽车空调鼓风机 叶片 气动噪声 降噪优化 

分 类 号：U467.493[机械工程—车辆工程]