计及气体力的新能源涡旋压缩机型线齿头修正优化  

Optimization of involute tooth head modification of new energy scroll compressors considering gas force

作　　者：冉志祥 何泽银[1,2] 向银 胡欣 陶平安 胡立志 RAN Zhixiang;HE Zeyin;XIANG Yin;HU Xin;TAO Pingan;HU Lizhi(School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Automotive Thermal Management System Engineering Technology Research Center,Chongqing Construction Automotive System Co.,Ltd.,Chongqing 400052,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074 [2]重庆建设汽车系统股份有限公司,重庆市汽车热管理系统工程技术研究中心,重庆400052

出　　处：《流体机械》2023年第8期93-99,共7页Fluid Machinery

基　　金：重庆市自然科学基金项目(CSTC2019cyj-msxmX0799);重庆市九龙坡区科技计划项目(2020-02-001-Z)。

摘　　要：针对涡旋型线齿头修正最优参数难以确定的问题,综合考虑齿头修正对基元腔气体力与齿头强度的影响,推导双圆弧加直线修正方法几何模型,建立双圆弧加直线修正方法参数化模型,解析涡旋齿头修正后压缩机气体力、齿头修正面积计算公式,研究了各修正参数对气体力与涡旋齿头修正面积的影响规律。以气体力峰峰值、涡旋齿修正面积为优化目标,齿头修正参数为设计变量,基于多目标遗传优化算法对修正参数进行优化设计。涡旋齿头面积基本不变的情况下,径向、切向气体力峰峰值下降最大达到22.61%,研究结果可为修正涡旋齿气体力解析计算、齿头修正最优参数选取提供理论依据。Aiming at the problem that it is difficult to determine the optimal parameters of modified profile,comprehensively considering the influence of top modified profile on the gas force and modified scroll wrap strength of primitive cavity,the geometric model of double circular arc plus line-shaped method was deduced;the calculation formulas of compressor gas force and the end cross-section area of the scroll wrap after the scroll wrap was modified were analyzed,and the influences law of modified profile parameters on gas force and the end cross-section area was studied.Then,taking the peak value of gas force and the end crosssection area as the optimization objectives and the modified parameters of modified scroll wrap as the design variables,the modified parameters were optimized based on multi-objective genetic optimization algorithm.When the end cross-section area of the modified scroll wrap is basically unchanged,the peak value of the radial and tangential gas force decreases by up to 22.61%.The research results can provide a theoretical basis for the analytical calculation of gas force of modified scroll wrap and the selection of optimal parameters of modified profile.

关 键 词：齿头修正 涡旋压缩机 气体力 多目标优化 新能源汽车 

分 类 号：TH45[机械工程—机械制造及自动化]