摘要
道路清扫车主要通过风机产生的负压和高速气流实现路面垃圾的收集处理。风机的能耗、稳定工作范围、工作噪声等性能参数直接决定扫路车的性能。因此,节能和环境友好型的车载风机是目前发展的方向,作为风机关键静止部件-蜗壳对风机整机性能有较大影响,本文采用CFD软件对蜗壳进行流场分析,采用某噪声软件进行噪声模拟,通过对蜗壳几何参数对比分析及对流场的噪声分析,研究在不降低甚至提高风机气动性能的前提下,降低风机气动噪声的方法。获得了蜗壳结构参数如蜗壳宽度和蜗舌位置及大小对性能和噪声的影响规律。
Road sweepers pick up garbage mainly through the lower pressure and high-speed airflow generated by a centrifugal fan. Energy consumption, stable working range, noise level and other performance parameters of the fan determine the quality of a road sweeper. An energy-saving and environmentally-friendly vehicle fan has a good market potential. The key static component of the fan is the volute, which has a big influence on the performance of the fan. In this paper, the volute of the fan was analyzed by CFD and the fan noise was obtained by a computational aeroacoustics software to explore the potential of noise reduction combined with an improvement of the aerodynamic performance of the fan. The effect of volute structure parameters, such as the volute width and the location of the volute tongue on the aerodynamic performance and the emitted noise are obtained in this study.
作者
王杨
Yang Wang(Shenyang Blower Works Group Corporatio)
出处
《风机技术》
2018年第2期34-39,共6页
Chinese Journal of Turbomachinery
关键词
离心风机
蜗壳宽度
蜗壳蜗舌
数值模拟
优化设计
噪声预测
centrifugal fan
volute width
volute tongue
numerical simulation
optimized design
noise prediction
