基于RBF的风冷无油涡旋压缩机冷却通道结构优化

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (3): 32-40.

基于RBF的风冷无油涡旋压缩机冷却通道结构优化

彭斌^*, 豆王红, 牛柯

兰州理工大学机电工程学院, 甘肃兰州 730050

收稿日期:2023-02-03 出版日期:2025-06-28 发布日期:2025-06-30
通讯作者: 彭斌(1976-),男,新疆伊宁人,博士,教授,博导.Email:pengb2000@163.com
基金资助:
国家自然科学基金(51675254,51966009),国家重点研发计划“科技助力经济2020”重点专项(SQ2020YFF0420989),甘肃省自然科学基金(22JR5RA283),甘肃省科技计划项目(20YF8GA057),兰州市人才创新创业项目(2020-RC-23)

Optimization of cooling channel structure of air-cooled oil-cooled oil-free scroll compressor based on RBF

PENG Bin, DOU Wang-hong, NIU Ke

School of Mechanical and Electronical Engineering, Lanzhou University of Technology,Lanzhou 730050, China

Received:2023-02-03 Online:2025-06-28 Published:2025-06-30

摘要/Abstract

摘要： 为了改善风冷无油涡旋压缩机冷却通道送风的均匀性,减小能量损失,提高动、静涡盘的散热效果,通过数值模拟和多目标优化对冷却通道进行了结构优化.以冷却通道截面、过渡形式以及导流板的形状和数量等为研究对象进行数值模拟,利用径向基神经网络构建近似模型,并利用NSGA-Ⅱ算法进行多目标优化,选取结构参数,确定冷却通道的最终模型,进而研究入口速度与流场的关系.结果表明:优化后出口速度相对标准偏差降低了30.73%,中心截面速度相对标准偏差降低了50.17%,进出口压降减小了87.16%,在显著改善送风均匀性的同时减小了能量损失;虽然流场均匀性随入口速度变化不明显,但进出口压降发生急剧变化.

关键词: 涡旋压缩机, 冷却通道, 流场分析, 多目标优化

Abstract: In order to improve the uniformity of air supply in the cooling channel of the air-cooled oil-free scroll compressor, reduce the energy loss, and improve the heat dissipation effect of the dynamic and static scroll disk, the structure of the cooling channel is optimized through numerical simulation and multi-objective optimization. The cooling channel section, transition form, and the shape and number of deflectors are used as the research objects for numerical simulation. The radial basis neural network is used to construct an approximate model, and the NSGA-Ⅱ algorithm is used to carry out multi-objective optimization to select structural parameters, and then the final model of the cooling channel is determined. The relationship between inlet velocity and flow field was studied. The results show that, after optimization, the relative standard deviation of outlet velocity was reduced by 30.73%, the relative standard deviation of center section velocity was reduced by 50.17%, and the inlet and outlet pressure drop was reduced by 87.16%, which significantly improved the uniformity of air supply and reduced energy loss. While the flow field uniformity was relatively insensitive to variations in inlet velocity, the pressure drop exhibited sharp changes.

Key words: scroll compressor, cooling channel, flow field analysis, multi-objective optimization

中图分类号:

TH45

彭斌, 豆王红, 牛柯. 基于RBF的风冷无油涡旋压缩机冷却通道结构优化[J]. 兰州理工大学学报, 2025, 51(3): 32-40.

PENG Bin, DOU Wang-hong, NIU Ke. Optimization of cooling channel structure of air-cooled oil-cooled oil-free scroll compressor based on RBF[J]. Journal of Lanzhou University of Technology, 2025, 51(3): 32-40.

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