转子压缩机三大摩擦损失的影响因素研究

Study on the Influence Factors of Three Major Friction Losses of Rotor Compressor

以转子压缩机为例,给出总摩擦功耗占比最高的三大摩擦损失计算公式,并迭代求解滚动活塞角速度,联立滚动活塞与滑片顶端之间的接触力。利用MATLAB软件实现计算过程,研究润滑油黏度、主轴转速、活塞质量、气缸高径比、滚动活塞与气缸端盖间隙等因素对压缩机三大摩擦损失的影响。结果表明:主轴转速对滚动活塞与偏心轮之间的摩擦损失影响较大,且随着转速的增大,摩擦损失也增大;活塞质量对滑片端部与滚动活塞外表面之间的摩擦损失影响最小;滑片与滑片槽之间的摩擦损失随着主轴转速、气缸高径比的增大而增大。该研究为降低各摩擦副处的摩擦损失及总摩擦功耗提供了参考和借鉴。

Taking the rotor compressor as an example,three formulas for calculating the friction loss with the highest total friction power consumption were given,and the angular velocity of the rolling piston and the contact force between the joint rolling piston and the top of the slide were solved iteratively.Using MATLAB software to realize the calculation process,the influence of viscosity of lubricating oil,rotation speed of main shaft,piston quality,ratio of height to diameter of cylinder,clearance between rolling piston and cylinder end cover on the three friction losses of compressor were studied.The results show that the rotation speed of the main shaft has a great influence on the friction loss between the rolling piston and the eccentric wheel,and the friction loss increases with the increase of the rotation speed;the piston mass has the least influence on the friction loss between the end of the slide and the outer surface of the rolling piston;the friction loss between the slide and the slide groove increases with the increase of the rotation speed of the main shaft and the height diameter ratio of the cylinder.This study provides a reference for reducing the friction loss and total friction power consumption of each friction pair.