燃料电池汽车低噪音冷却风扇的研究与设计

Jiale Zhu, Guoqiang Xu, Yanghong You, Youwei He
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引用次数: 0

摘要

燃料电池汽车的主要噪声源来自冷却车,冷却车具有电压高、风量大的特点。然而,大风量会使风扇的噪音显著增加,达到 70 分贝左右。即使汽车采用了多种物理降噪方法,车内噪声仍然很高,严重影响了乘客的乘坐体验。近年来,相关研究结合仿生技术对风扇叶片进行改进,通过设计新的形状结构,使其具有类似于某些生物体的特性,从而达到降噪的目的。本文采用 ANSYS-CFX 软件模拟不同叶片数下的风扇效率和噪声水平,预测其性能并优化其结构。
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Research and design of low-noise cooling fan for fuel cell vehicle
The main noise source of fuel cell vehicles comes from the cooling vehicle, which has the characteristics of high voltage and large air volume. However, the large air volume makes the fan noise level significantly increase, reaching about 70dB. Even if the car adopts a variety of physical noise reduction methods, the noise level inside the car is still high, seriously affecting the passenger ride experience. In recent years, related research combined with bionic technology to improve the fan blade by designing a new shape structure, so that it has similar characteristics to some organisms to achieve the purpose of noise reduction. In this paper, ANSYS-CFX software is used to simulate the fan efficiency and noise level under different blade numbers, predict its performance, and optimize its structure.
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