变截面涡旋膨胀机几何模型分析  

Comprehensive Analysis of Geometric Model of a Variable Thickness Scroll Expander

作　　者：张朋成[1] 彭斌[1] 马捷 ZHANG Pengcheng;PENG Bin;MA Jie(School of Mechanical and Electrical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学机电工程学院,兰州730050

出　　处：《上海交通大学学报》2023年第3期309-315,共7页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金(51675254,51966009),“兰州理工大学优秀博士学位论文培育计划”资助项目。

摘　　要：提出一种由不同基圆半径的圆渐开线组成的新型变截面涡旋膨胀机,论述型线的生成方法,给出型线的一般方程,建立一系列圆渐开线变截面涡旋膨胀机的几何模型,并分析控制系数对变截面涡旋膨胀机容积变化的影响.构建传统等截面、变截面涡旋膨胀机的几何模型,对比分析几何模型的优劣.结果表明:提出的新型变截面涡旋膨胀机模型不但具有传统变截面模型的优点,而且可以大幅度减少计算量,并在一定程度上丰富了变截面涡旋膨胀机的种类,为开发高性能的涡旋膨胀机提供借鉴.A novel variable thickness scroll expander composed of involutes of circle with different base circle radii is proposed.The generating method of profile is discussed,the general equation of profile is given,and a series of geometric models of the variable thickness scroll expander are established.According to the established geometric model,the influence of control coefficient on the volume change of the variable thickness scroll expander is analyzed.In addition,the geometric models of the traditional equal constant thickness and variable thickness scroll expander are constructed,and the advantages and disadvantages of the geometric models are compared.The results show that the novel variable thickness scroll expander model not only has the advantages of the traditional variable thickness model,but also greatly reduces the amount of calculation.To a certain extent,it enriches the types of variable thickness scroll expanders and provides reference for the development of high-performance scroll expanders.

关 键 词：圆渐开线 涡旋膨胀机 变截面 几何模型 控制系数 

分 类 号：TH45[机械工程—机械制造及自动化]