分析了新型旋叶式压缩机的结构特点，对滑片进行了受力分析，根据达朗伯原理，建立了力与主轴转角关系的数学模型。通过研究滑槽背压变化对滑片运动状态、运动规律等特性的影响及对三种背压状态的比较，认为恒定滑槽背压更有利于改善滑片的运动特性、提高旋叶式压缩机的工作性能，为旋叶式压缩机优化设计建立了基础。 The structural characteristics of the new rotary vane compressor are analyzed. The force analysis of the vane is done. According to the principle of Darumber, a mathematical model of the relationship between the force and the rotational angle of the main shaft is established. By studying the influence of chute back pressure on the characteristics of sliding vane, such as motion state and movement, and comparing the three kinds of backpressure state, it is considered that the constant chute back pressure is more beneficial to improve the sliding vane movement characteristics, Machine performance, for the rotary vane compressor optimization design established the foundation.