涡旋压缩机非对称变壁厚涡旋齿的设计与受力特性分析  

Design and analysis of mechanical performance of asymmetric variable thickness scroll wraps for scroll compressor

作　　者：李雪琴 韩奕 奚周瑾 李祥艳 王君 董丽宁 LI Xueqin;HAN Yi;XI Zhoujin;LI Xiangyan;WANG Jun;DONG Lining(China University of Petroleum(East China),Center of Petroleum Industry Training,Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)石油工业训练中心,山东青岛266580

出　　处：《流体机械》2021年第12期35-41,共7页Fluid Machinery

基　　金：国家自然科学基金项目(52176029);山东省自然科学基金项目(ZR2019MEE079);压缩机技术国家重点实验室(压缩机技术安徽省实验室)开放基金项目(SKL-YSJ202006)。

摘　　要：针对现有对称变壁厚涡旋齿涡旋压缩机,其动涡旋齿和静涡旋齿均为变壁厚,动涡旋齿在公转平动过程中会因质量大而导致动力特性差的问题,基于法向等距原理提出了一种新型非对称变壁厚涡旋齿结构,其静涡旋齿为变壁厚,而动涡旋齿为等壁厚,构建了全啮合涡旋型线,讨论了修正参数对于涡旋压缩机性能的影响,并对比了新型非对称变壁厚涡旋齿和现有对称变壁厚涡旋齿的应力和变形。研究结果表明:新型非对称变壁厚涡旋齿能明显降低涡旋齿在工作中的应力和变形;动涡旋齿的最大应力降低了6.25%,最大变形量降低了5%。The orbiting scroll and fixed scroll of the existing variable thickness scroll compressors all have variable thickness.Orbiting scroll will cause poor dynamic characteristics during the orbiting process due to its large mass.In response to this problem,a novel asymmetric variable thickness scroll wrap was proposed based on the principle of normal equidistance.The thickness of fixed scroll is variable while that of orbiting scroll is constant.Furthermore,complete meshing profiles were constructed and influences of the geometric parameters on the performance of the scroll compressor were discussed,and the stress and deformation of the new asymmetric variable thickness scroll compressors and the existing symmetric variable thickness scroll compressors were compared.Study results show that the new asymmetric variable wall thickness scroll wrap can significantly reduce its stress and deformation during operation;the maximum stress of the orbiting scroll wrap was reduced by 6.25%,and the maximum deformation was reduced by 5%.

关 键 词：涡旋压缩机 非对称变壁厚 修正参数 内容积比 受力特性 

分 类 号：TH45[机械工程—机械制造及自动化]