基于三圆弧的旋叶式压缩机新型线叶片设计  

New Curve Vane’s Design Based on Three Circular Arc for Rotary Vane Compressor

作　　者：宋立权[1] 赵孝峰[1] 刁锦瑞 李成武[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]上海埃尔特压缩空气系统有限公司,上海201109

出　　处：《机械工程学报》2009年第6期298-303,共6页Journal of Mechanical Engineering

摘　　要：与定子内壁相接触的叶片头部形状,是旋叶式压缩机的设计关键。创造性提出的基于三圆弧(Three circular arc,TCA)叶片型线的原理和导出的叶片型线的设计计算理论,为实现高效压缩的旋叶式压缩机设计提供了理论计算依据,拓宽了旋叶式压缩机的设计理论。计算机仿真与试验表明,三圆弧叶片比传统方法设计的叶片具有更好的啮合特性,完全消除了"尖点滑移"和局部磨损现象,具有均匀相对滑动;型线的形状保证了叶片头部与定子内壁密封的可靠性;叶片头部具有最简单的型线形状,易于机械加工制造;与主型线光滑连接的前、后过渡修正圆弧,使叶片与定子内壁啮合时,不成刀刃状,且利于形成油膜,改进了润滑状况,同时降低了定子、转子及转子叶片和叶片槽的加工和装配精度要求。The vane tip profile contacted with the inner wall of the stator is the key to design the rotary vane compressor. A new principle and design theory based on the three circular arc（TCA） to design vane profile is creatively presented, it provides a theoretical calculation basis designing the rotary vane compressor with high efficient compression ,and broadens the design theory of the rotary vane compressor. Computer simulation and test demonstrate that the vane based on three circular arc has a better meshing characteristics than the traditional one, it eliminates the scraping between the vane tip and the cylinder and partial abrasion conditions completely, and leads to slide uniformly. The shape of the vane tip profile ensures the reliability of the seal between the vane tip and the inner wall of the stator; the vane tip profile is simple, and easy to machine. When the vane is meshed with inner wall of the stator, the front and back transitional arc smoothly connected with the main vane profile can not only avoid to result the cutting edge shape, but also benefit to form oil membrane, it further improves lubrication conditions and reduces precision requirements of the stator, rotor, vane and rotor slot when machined and assembled.

关 键 词：旋叶式压缩机 叶片型线 啮合特性 叶片设计 

分 类 号：TK413[动力工程及工程热物理—动力机械及工程] TK401