涡旋齿端等β角圆弧类型线修正理论的研究

Theoretical Study on Modification of Top Profile Based on Arc Shaped Curves with Equal Beta Angle for Scroll Fluid Machinery

对等 β角圆弧类涡旋修正齿型进行了深入研究 ,得到了这类修正齿型的齿端生成方法、齿型特点及齿端修正参数的通用表达形式 .采用控制容积法导出了工作腔容积随动盘转角变化的解析计算式 ,提出了动态的切向和径向气体力作用面积的精确及简化计算方法 ,通过算例对两种方法作了对比和分析 ,明确了其使用条件 ,而这些修正理论适用于等 β角圆弧类修正的所有齿型 .

Through the in-depth analysis of the modification of top profile based on arc shaped curves with equal β angle, the method of generating the top profile, characteristic of the top profile and the general calculation equations are presented. A precise and simple expression of the volume that varies with the rotation angle of the moving scroll is derived from the control volume method. The accurate and concise methods to calculate the impact area of the tangential and radial gas forces are derived, the comparison and analysis of these two kinds of calculation methods are conducted through examples and conditions are presented. The results show that this method is suitable to all wraps modified by arc shaped curves.