自行研制了热声驱动脉管制冷机实验台 ,着重研究了加热温度、平均工作压力、小孔开度、工质种类等因素对脉管制冷机性能的影响 .初步实验表明 ,以氮、氦及氦和氩混合物 (氦占 94 % )作工质 ,分别获得了 2 34.5K、179K及 16 5K的无负荷制冷温度 .此外 ,本文还指出了进一步改进方向 ,具有一定参考价值 . The experiment of thermoacoustic pulse tube refrigerator was developed by ourselves, and the effects of heating temperature, average working pressure, orifice opening, working fluid type and other factors on the performance of pulse tube refrigerator were researched.The preliminary experiments show that nitrogen, helium And helium and argon mixture (helium accounted for 94%) as the working medium, respectively, obtained 2 34.5K, 179K and 16 5K no-load refrigeration temperature.In addition, this paper also pointed out that further improvement of the direction, with some reference value.