间隙对内啮合摆线转子压缩机运动特性的影响

Kinetic Property Influenced by Clearances in Internal-Meshing Cycloid Rotary Compressor

在忽略其他间隙的情况下,仅考虑外转子和缸体镜面间隙,分析了该间隙对运动的影响,详细分析了齿间间隙对内外转子的运动及啮合关系变化的作用.采用数值迭代的方法,结合实例计算了一定间隙下,外转子偏转角度、参与啮合的外转子齿号以及实际内转子啮合点发生角.研究结果表明,外转子和缸体镜面间的间隙会造成启动过程中的冲击,而齿间的间隙会导致理想情况下的多点同时啮合运行关系转化为单点啮合.如果认为主轴转速均匀,则齿间间隙会造成外转子转速产生波动.该问题的研究可为非理想情况下的内摆线转子压缩机的受力分析研究打下基础.

The kinetic property affected by the clearance between the outer rotor and the cylinder was analyzed with ignoring the influence of other clearances. The influence of the gap between gears was studied in detail. Numerical iterative method was employed in calculation for an example. The deflection angle of the outer rotor, the sequence number of teeth on the outer rotor taking part in the meshing process and the actual generating angle of the inner rotor were obtained. The result shows that the clearance between the outer rotor and cylinder will cause impact effect during the start-up process and the gap between gears will transform the ideal multi-point mesh into the actual one-point mesh. If the rotate speed of the shaft was constant, the gap would cause the speed fluctuation of the outer rotor.