圆渐开线变截面涡旋压缩机几何性能综合分析

doi:10.3901/JME.2020.23.118

摘要/Abstract

摘要： 提出一种由不同基圆半径的圆渐开线组成的新型变截面涡旋压缩机型线，组成形式为圆渐开线Ⅰ+圆渐开线Ⅱ+圆渐开线Ⅰ。论述型线的生成方法，给出型线的一般方程，建立一系列圆渐开线变截面涡旋压缩机的几何模型。针对建立的几何模型，分析控制系数θ、φ^*、R_or对变截面涡旋压缩机几何性能的影响。以圆渐开线Ⅰ为基础，构建圆渐开线Ⅰ+高次曲线+圆渐开线Ⅰ的变截面涡旋压缩机的几何模型，综合分析两类变截面涡旋压缩机的几何性能。结果表明：θ取中值θ_M，φ^*，控制系数R_or取较大值，对应的几何性能较优。高次曲线变截面涡旋压缩机与中值θ_M对应的圆渐开线变截面涡旋压缩机相似，可相互替代。

关键词: 圆渐开线, 涡旋压缩机, 变截面, 几何模型, 控制系数

Abstract: A new type of variable thickness scroll compressor line composed of circular involutes with different base circle radii is proposed, which is composed of a circular involute I+ circular involute II+ circular involute I. The method of generating the profile is discussed, the general equations of the profile are given, and a series of geometric models of the circular involute variable thickness scroll compressor are established. Aiming at the established geometric model, the influence of the control coefficients θ, φ^* and R_or on the geometric performance of the variable thickness scroll compressor is analyzed. Based on the circular involute Ⅰ, a geometric model of variable thickness scroll compressors with circular involute Ⅰ + higher-order curve + circular involute Ⅰ is constructed, and the geometric performance of two types of variable thickness scroll compressors is comprehensively analyzed. The results show that:θ taking the median value θ_M,φ^* taking the value of φ_end-2(n₁+1)∏, and R_or taking the larger, the corresponding geometric performance is better. Higher-order curve variable thickness scroll compressors are similar to the circular involute variable thickness scroll compressors corresponding to the median value θ_M, and can be substituted for each other.A new type of variable thickness scroll compressor line composed of circular involutes with different base circle radii is proposed, which is composed of a circular involute I+ circular involute II+ circular involute I. The method of generating the profile is discussed, the general equations of the profile are given, and a series of geometric models of the circular involute variable thickness scroll compressor are established. Aiming at the established geometric model, the influence of the control coefficients θ, φ^* and R_or on the geometric performance of the variable thickness scroll compressor is analyzed. Based on the circular involute Ⅰ, a geometric model of variable thickness scroll compressors with circular involute Ⅰ + higher-order curve + circular involute Ⅰ is constructed, and the geometric performance of two types of variable thickness scroll compressors is comprehensively analyzed. The results show that:θ taking the median value θ_M,φ^* taking the value of φ_end-2(n₁+1)π, and R_or taking the larger, the corresponding geometric performance is better. Higher-order curve variable thickness scroll compressors are similar to the circular involute variable thickness scroll compressors corresponding to the median value θ_M, and can be substituted for each other.

Key words: circular involute, scroll compressor, variable thickness, geometric model, control coefficient

中图分类号:

TH45

张朋成, 彭斌, 张宇波. 圆渐开线变截面涡旋压缩机几何性能综合分析[J]. 机械工程学报, 2020, 56(23): 118-128.

ZHANG Pengcheng, PENG Bin, ZHANG Yubo. Comprehensive Analysis of Geometric Performance of Circular Involute Variable Thickness Scroll Compressor[J]. Journal of Mechanical Engineering, 2020, 56(23): 118-128.

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