学术论文

      变截面涡旋压缩机数学模型及试验研究

      Investigation of Mathematical Modeling and Experiment for Variable Thickness Scroll Compressor

      摘要:
      为详细研究变截面涡旋压缩机的性能特点,提出一种圆渐开线、高次曲线和圆弧组合的变截面型线,根据几何模型得到工作腔容积的变化情况。基于能量和质量守恒,充分考虑工作过程中的吸气加热、轴向和径向泄漏、工质与涡旋齿和涡旋盘的传热,构建变截面涡旋压缩机的整体数学模型,通过对数学模型的求解,详细分析实际气体在工作过程中温度、压力和质量随曲轴转角的变化规律。采用研制开发的变截面空气涡旋压缩机建立测试平台,并将模拟计算得到的排气温度、质量流量和轴功率与试验数据进行对比,结果表明,构建的数学模型能够准确描述变截面涡旋压缩机的吸气、压缩及排气全过程,该研究为定量化分析、优化及提升变截面涡旋压缩机的性能提供了有利工具。
      Abstract:
      In order to investigate performance characteristics of variable thickness scroll compressor, a new profile based on involute of circle, high curve and arc is presented. The change of the working chamber volume with respect to the orbiting angle is derived. A detail mathematical modeling based on energy and mass balance is established. Suction gas heating, radial and flank leakage, heat transfer between the fluid and scroll wraps are considered in the mathematical modeling. Temperature, pressure, and mass of working chamber are investigated by solving the mathematical modeling. The experiment rig for variable thickness scroll compressor is set up. From the comparison of the simulated and measured data, it can be seen that the compressor model predicts the mass flow, discharge temperature and shaft power very well. So the proposed mathematical modeling can accurately describe all the suction, compression and discharge processes for variable thickness scroll compressor. The results provide a strong and useful tool for quantitative analysis, optimization, promotion the performance of variable thickness scroll compressor.
      作者: 彭斌 孙迎
      Author: PENG Bin SUN Ying
      作者单位: 兰州理工大学机电工程学院兰州 730050; 兰州理工大学温州泵阀工程研究院温州 325105
      刊 名: 机械工程学报 ISTICEIPKU
      年,卷(期): 2015, (14)
      分类号: TH45
      机标分类号: TH1 O32
      在线出版日期: 2015年9月1日
      基金项目: 国家自然科学基金,浙江省自然科学基金(LY12E05010)资助项目。