提出了一种用于脉管制冷机的导流方法:在射流正前方引入挡片,消除射流对导流丝网的冲击作用,减小丝网对气体进行导流所需的阻力和产生的流动损失,从而提高制冷机性能。通过CFD模拟对挡片的作用机理进行了研究,表明导流挡片可以有效抑制脉管中涡流的出现,减少冷热气流的混合。进一步的实验研究验证了导流结构的积极作用,为脉管制冷机导流结构的设计提供了一种新的参考方式。 A new method of flow control for pulse tube refrigerator is proposed. Introducing the baffle directly in front of the jet to eliminate the impact of the jet on the guide wire and reduce the resistance of the wire to guide the gas and the Loss of flow to improve chiller performance. The mechanism of the baffle is studied by CFD simulation, which shows that the baffle can effectively suppress the eddy current in the vessel and reduce the mixing of hot and cold air flow. Further experimental studies have verified the positive effect of the diversion structure and provided a new reference mode for the design of the flow-guiding structure of the pulse tube refrigerator.