椭圆旋轮线型罗茨泵转子型线设计  

Rotor Profile Design of Elliptical Rotary Wheel Line Type Roots Pump

作　　者：贲晨阳 何雪明 刘振超 BEN Chenyang;HE Xueming;LIU Zhenchao(School of Mechanical Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology,Wuxi,Jiangsu 214122,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]江南大学江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《轻工机械》2022年第4期34-39,共6页Light Industry Machinery

基　　金：国家自然科学基金资助项目(51275210);国家自然科学基金资助项目(51975251);江苏省食品先进制造装备技术重点实验室自主研究课题资助项目(FMZ2018Y2)。

摘　　要：为提高罗茨泵的性能,课题组提出了椭圆旋轮线构成的转子型线,得到了罗茨泵椭圆旋轮线型转子型线的数学模型。分析了椭圆率对转子型线形状的影响,并推导了转子型线的根切条件;然后以容积效率为性能参数对转子型线进行分析研究。结果表明:转子型线的椭圆率越小,容积效率越大;当椭圆率为0.4时,容积效率为0.6656,比传统摆线型转子型线提高了23.09%,比圆弧型转子型线提高了8.07%。椭圆旋轮线型转子型线性能更好。In order to improve the performance of Roots pump,a rotor profile composed of elliptic rotor profile was proposed,and a mathematical model of the rotor profile of Roots pump was obtained.The influence of ellipticity on the shape of rotor profile was analyzed,and the root cutting condition of rotor profile was deduced.Then the rotor profile was analyzed with volume efficiency as performance parameter.The results show that the smaller the ellipticity of the rotor profile is,the greater the volume efficiency is.When the ellipticity is 0.4,the volume efficiency is 0.6656,which is 23.09%higher than that of the traditional pendulum rotor profile and 8.07%higher than that of the arc rotor profile.The performance of the oval wheel rotor profile is better.

关 键 词：罗茨泵 转子型线 椭圆旋轮线型 容积效率 

分 类 号：TH326[机械工程—机械制造及自动化] TB752.26[一般工业技术—真空技术]