The displacer-type pulse tube refrigerator is a kind of Stirling-type pulse tube refrigerator with work recovery. It uses a displacer as a phase shifter and has the advantages of high efficiency and compact structure. One-dimensional numerical simulation of the displacer-type pulse tube refrigerator is performed, and the accuracy of the simulation is experimentally verified. The parametric analyses of displacer diameter, rod diameter, moving mass, spring stiffness, mechanical damping, and clearance seal are conducted. The results show that regenerator phase relations and work recovery effectiveness are significantly influenced by the displacer parameters, which further affect the performance. Regenerator phase relations and work recovery effectiveness are better when the rod diameter ratio to displacer diameter is about 0.5, contributing to the maximum coefficient of performance (COP_c). The rod diameter corresponding to the optimal cooling capacity is greater than that corresponding to the optimal COP_c at the same displacer diameter. The length of the clearance seal has a slight effect on the performance when the height is less than 25 μm. Work recovery effectiveness is a unique attribute of the work recovery pulse tube refrigerator. Work recovery and phase shift require coupled analysis to optimize the performance of displacer-type pulse tube refrigerator.

浮筒式脉冲管制冷机是一种具有工作恢复性的斯特林式脉冲管制冷机。它使用置换器作为移相器，具有效率高，结构紧凑的优点。进行了置换型脉冲管制冷机的一维数值模拟，并通过实验验证了其准确性。对浮子直径，杆直径，运动质量，弹簧刚度，机械阻尼和间隙密封进行了参数分析。结果表明，置换器参数显着影响再生器的相位关系和工作恢复效率，进而影响性能。当活塞杆直径与浮子直径之比约为0.5时，蓄热器相位关系和功恢复效率更好，_c）。在相同的置换器直径下，与最佳冷却能力相对应的杆直径大于与最佳COP _c相对应的杆直径。当高度小于25μm时，间隙密封的长度会对性能产生轻微影响。工作恢复效率是工作恢复脉冲管制冷机的独特属性。工作恢复和相移需要进行耦合分析，以优化置换器式脉冲管制冷机的性能。