无油双涡圈空气涡旋压缩机的数值模拟及试验研究

doi:10.16183/j.cnki.jsjtu.2021.115

摘要/Abstract

摘要：

为了分析无油双涡旋齿压缩机工作腔内部流场的流动特性,基于计算流体动力学方法对压缩机工作腔内部流场进行了三维非稳态数值模拟;为了验证数值模拟与实际工作过程的偏差,搭建了以空气为工质的涡旋压缩机试验测试平台,得到了无油双涡圈压缩机的实际输出性能参数.研究结果表明:在相邻工作腔之间的质量交换,对工作腔内以及沿着齿高方向的温度和速度的分布影响较大,对压力的影响较小;进出口质量流量和流速呈周期性变化,压缩机转速越高,理论容积流量越大.

关键词: 无油涡旋压缩机, 双涡旋齿, 热力学模型, 数值模拟, 计算流体动力学, 试验研究

Abstract:

In order to analyze the flow characteristics of the internal flow field in the working chamber of the oil-free double-warp scroll compressor, a three-dimensional unsteady numerical simulation of the internal flow field in the working chamber of the compressor is conducted based on the computational fluid dynamics (CFD) method. In order to verify the deviation between the numerical simulation and the actual working process, a test platform for scroll compressors using air as the working medium is built, and the actual output performance parameters of the oil-free double-warp scroll compressor are obtained. The results show that the mass exchange between adjacent working chambers has a greater impact on the working chamber and the distribution of temperature and velocity along the tooth height direction, but has a little impact on pressure. The inlet and outlet mass flow and velocity rate change periodically, and as the compressor speed increases, the theoretical volume flow increases.

Key words: oil-free scroll compressor, double-warp, thermodynamic model, numerical simulation, computational fluid dynamics (CFD), experimental study

中图分类号:

TH455

孙健, 彭斌, 朱兵国. 无油双涡圈空气涡旋压缩机的数值模拟及试验研究[J]. 上海交通大学学报, 2022, 56(5): 611-621.

SUN Jian, PENG Bin, ZHU Bingguo. Numerical Simulation and Experimental Study of Oil-Free Double-Warp Air Scroll Compressor[J]. Journal of Shanghai Jiao Tong University, 2022, 56(5): 611-621.

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参数	取值	参数	取值
r_b/ m	9.231×10^-3	α/(°)	13.98
t/m	4.450×10^-3	φ_b/(°)	45
h/m	65.00×10^-3	φ_e/(°)	765

参数	单涡旋齿	双涡旋齿
r_b/m	9.231×10^-3	9.231×10^-3
α/(°)	13.980	13.980
t/m	4.45×10^-3	4.45×10^-3
r_or/m	24.500×10^-3	10.000×10^-3

名称	体网格单元数	网格节点数
进气管	23,337	10,189
工作腔	5,613,089	2,608,404
排气管	80,100	13,762
总计	5,716,526	2,632,355