【摘要】 为提升二级射流真空发生器的真空度和引射系数，建立以空气为介质的二级射流真空发生器仿真模型，通过仿真模型获取相关性能数据。在此基础上，运用响应面法构建二级射流真空发生器结构参数对其真空性能影响的拟合数学模型，以真空度和引射系数为优化目标，通过求解拟合数学模型，确定了二级射流真空发生器的最优结构参数组合。结果表明：优化后二级射流真空发生器的真空度增加了13.9%,引射系数增加了26.3%。更多还原

【Abstract】 To enhance the vacuum degree and ejection coefficient of a two-stage jet vacuum generator, a simulation model of the two-stage jet vacuum generator with air as the medium was established to obtain relevant performance datas. Based on this, a fitting mathematical model of the influence of parameters of the two-stage jet vacuum generator on its vacuum performance was constructed using the response surface methodology. Subsequently, with vacuum degree and ejection coefficient as optimization objectives, the optimal structural parameter combination of the two-stage jet vacuum generator was determined by solving the fitting mathematical model. The results indicate that the vacuum degree of the optimized two-stage jet vacuum generator increased by 13.9%, and the ejection coefficient increased by 26.3%.更多还原