摘要
弹簧是实现线性压缩机活塞共振控制和影响压缩机寿命的关键零件,针对现有压缩机用板弹簧刚度小、使用数量多等问题,设计了一种多臂阿基米德螺线盘簧,采用有限元法分析了阿基米德螺线的基圆半径r、略角θ、螺距常数b等参数对弹簧臂刚度的影响规律,针对盘簧臂刚度的多因素影响特性,采用有限元响应面优化法,对圆柱盘簧臂的刚度性能进行了优化,优化后的圆柱盘簧臂的轴向刚度提高了42.5%,径向刚度提高了26.8%,且疲劳强度满足使用要求;对两臂和三臂盘簧进行了刚度测试实验,并对两者的性能进行分析和对比,得出了在同等轴向刚度条件下,三臂盘簧径向刚度和质量特性要优于两臂盘簧,将三臂盘簧应用于线性压缩机中,可以替代6个板弹簧,轴向刚度可达到25.6 N/mm,且具有较好的径向支撑效果,能够满足线性压缩机所需要的轴向刚度以及径向刚度需求,研究结果对线性压缩机弹簧的设计和应用具有理论和实际意义。
The spring is the key part to realize the resonance control of the piston of the linear compressor and to affect the compressor's life.In order to solve the problems of small stiffness and large number of plate springs used in compressors,a kind of multi-arm Archimedes spiral coil spring is designed.Finite element method is used to analyze the influence of parameters of Archimedes spiral on the stiffness of the spring arm,such as the base circle radius r,the sweep angle slightlyθand the constant of the pitch b.In view of the influence of multiple factors on the stiffness of the coil spring arm,the finite element response surface optimization method is adopted to optimize the stiffness performance of the cylindrical coil spring arm.The axial stiffness and radial stiffness of the optimized cylindrical coil spring arm are increased by 42.5%and 26.8%respectively.The stiffness test experiment was carried out on the two-arm coil spring and the three-arm coil spring,and their performance was analyzed and compared.It was concluded that the radial stiffness and mass characteristics of the three-arm coil spring were better than that of the two-arm coil spring under the same axial stiffness condition.Finally,the three-arm coil spring is applied to the linear compressor,which can replace 6 plate springs,and the axial stiffness can reach 25.6 N/mm.Moreover,it has good radial support effect,which can meet the axial stiffness and radial stiffness requirements of the linear compressor.The research results have theoretical and practical significance for the design and application of linear compressor spring.
作者
陈洪月
张站立
王鑫
周立秋
沙永东
CHEN Hongyue;ZHANG Zhanli;WANG Xin;ZHOU Liqiu;SHA Yongdong(College of Mechanical Engineering,Liaoning Technical University,Fuxin 123000;Dynamic Research Center for High-end Complete Integrated Coal Mining Equipment and Big Data Analysis,China Coal Industry Association,Fuxin 123000;National and Local Joint Engineering Research Center of Mine Hydraulic Technology and Equipment,Liaoning Technical University,Fuxin 123000)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2022年第3期167-176,共10页
Journal of Mechanical Engineering
基金
国家自然基金(51874157)
辽宁省教育厅基础研究项目(LJ2020JCL026)
辽宁省自然科学基金(2019-MS-161)
2019年度辽宁省高等学校创新人才(理)(LR2019030)
辽宁省教育厅基础研究(LJ2020JCL026)资助项目。
关键词
线性压缩机
盘簧
有限元分析
刚度
优化设计
linear compressor
coil spring
finite element analysis
stiffness
optimization design
