Analysis of the Aerodynamic Noise of an Automotive HVAC System

Wang Linan; Zhang Zhenyu; Sun Qiang; Chen Jiangping

doi:10.3969/j.issn.0253-4339.2019.02.074

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Analysis of the Aerodynamic Noise of an Automotive HVAC System

更新时间：2024-07-18

- Analysis of the Aerodynamic Noise of an Automotive HVAC System
- Journal of Refrigeration Vol. 40, Issue 2, (2019)
- 作者机构：
  
  1. 上海交通大学制冷与低温工程研究所
  2. 江淮汽车股份有限公司电气部
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2019.02.074
  CLC：
- Published：2019
- 稿件说明：
移动端阅览
Wang Linan, Zhang Zhenyu, Sun Qiang, et al. Analysis of the Aerodynamic Noise of an Automotive HVAC System[J]. Journal of refrigeration, 2019, 40(2).
DOI：

Wang Linan, Zhang Zhenyu, Sun Qiang, et al. Analysis of the Aerodynamic Noise of an Automotive HVAC System[J]. Journal of refrigeration, 2019, 40(2). DOI： 10.3969/j.issn.0253-4339.2019.02.074.

摘要

汽车空调HVAC总成的气动噪声是汽车空调系统主要的噪声来源之一。本文分析了HVAC总成的气动噪声的产生机理，并对某车型HVAC总成的气动噪声表现进行了性能改进。建立了HVAC内部流场仿真模型，并通过修改空调分配箱壳体与鼓风机蜗壳的结构型线，调节模式风门的位置来优化内部流场结果。结果表明：优化后HVAC总成的气动噪声表现明显优于原状态；实车上使用频次较高的吹面、除霜模式下的噪声声压级，相比原状态分别降低2.3 dB(A)、3.3 dB(A)，降噪效果显著。

Abstract

Automotive heating

ventilating

and air-conditioning (HVAC) noise is the primary noise source in an automotive air-conditioning system and mainly manifests as aerodynamic noise. In this study

the mechanism of aerodynamic noise generation in HVAC was assessed and the aerodynamic noise performance of a vehicle HVAC assembly was improved. The flow field of an HVAC system was simulated and optimized by modifying the molded lines of the air handling unit and the blower volute

and by adjusting the position of the damper. Results showed that the optimized HVAC assembly presents better noise performance than the baseline. Specifically

the noise sound pressure level was severely reduced by 2.3 and 3.3 dB(A) respectively in the vent and defrost modes

which are the typically used ones in the vehicle.

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Related Institution

Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology

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Institute of Refrigeration and Cryogenics, University of Shanghai for Science and Technology

上海理工大学环境与建筑学院

School of Energy and Power Engineering, Huazhong University of Science and Technology

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