在U型脉冲管制冷机结构基础上,研制了一台带有一个蓄冷器和两个相同脉管的新结构U型脉冲管制冷机,并进行了实验研究和分析。制冷机采用惯性管调相,在压缩机输入电功率80 W,运行频率52 Hz下,获得了120 K@6 W的制冷量。重点对两种惯性管调相方法进行研究和分析,得出了对新结构U型脉冲管制冷机调相有益的结论,并对惯性管调相过程中产生的直流现象进行了验证分析。 Based on the structure of U-type pulse tube refrigerator, a new structure U-type pulse tube refrigerator with a regenerator and two identical vessels was developed and experimentally studied and analyzed. The chiller uses an inertial tube phase modulation that achieves a cooling capacity of 120 K @ 6 W at a compressor input electrical power of 80 W and an operating frequency of 52 Hz. Focusing on the research and analysis of the phase modulation methods of two kinds of inertial tubes, the conclusion is drawn that the phase modulation of the U-shaped pulse tube refrigerator with new structure is beneficial, and the DC phenomena generated during the phase modulation of the inertial tube are verified.