微型压缩机的振膜加筋特性分析  

Analysis on Characteristics of Diaphragm with Ribs in Micro Compressor

作　　者：余欣 王文[1] YU Xin;WANG Wen(Institute of Refrigeration and Cryogenic Engineering,Shanghai Jiao Tong University,Shanghai 200020,China)

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200020

出　　处：《制冷技术》2022年第1期17-23,33,共8页Chinese Journal of Refrigeration Technology

基　　金：国家自然科学基金(No.51576123)。

摘　　要：本文对压缩机振膜进行了有限元分析,讨论了具有加强筋结构振膜的筋类型、数量和型线参数的影响。结果表明:直筋振膜中增加筋的数量和半径均有提升效果,筋的条数为8条、半径为1.1 mm时,抗压刚度提升了1.5%,径向刚度提升了35.1%,抗扭刚度提升了4.8%;对于螺旋筋振膜,增加筋的半径和数量能够提升抗压刚度和径向刚度,但会降低抗扭刚度,筋的数量为8条、半径为1.1 mm时,抗压刚度提升了3.5%,径向刚度提升了50.5%,抗扭刚度降低了26.2%;改变螺旋筋的参数方程,振膜性能也发生变化,基圆半径减小时,抗压刚度和抗扭刚度增大,而扭转刚度逐渐减小。对比之下,直筋振膜的径向刚度和抗扭刚度都是呈现强化的趋势,符合对刚度的强化需求。The finite element analysis of the compressor diaphragm is carried out in this paper.The diaphragm with the ribs structure is discussed about the perspective of the type,number and profile parameters of the ribs.The results are as follows.Increasing the number and radius of ribs has a lifting effect on the straight rib diaphragm.When the number of ribs is 8 and the radius is 1.1 mm,the compression stiffness is increased by 1.5%,the radial stiffness is increased by 35.1%,and the torsional stiffness is increased by 4.8%.For spiral rib diaphragms,increasing the radius and number of ribs can increase the compression stiffness and radial stiffness,but will reduce the torsional stiffness.When the number of ribs is 8 and the radius is 1.1 mm,the compression stiffness is increased by 3.5%,the radial stiffness is increased by 50.5%,and the torsional stiffness is reduced by 26.2%.By changing the parameter equation of the spiral rib,the performance of the diaphragm also changes.When the base circle radius decreases,the compressive stiffness and torsional stiffness increase,while the torsional stiffness gradually decreases.The radial stiffness and torsional stiffness of the straight-ribbed diaphragm are showing a strengthening trend,which better meets the need for strengthening the stiffness.

关 键 词：微型压缩机 加筋振膜 抗拉(压)刚度 抗扭刚度 

分 类 号：TB652[一般工业技术—制冷工程] TB611