脉管制冷机可看作是是斯特林制冷机的变种,带室温推移活塞的脉管制冷机是一种可逆脉管制冷机,与斯特林制冷机一样可工作于四种模式。本文采用数值分析的方法阐述了脉管热机的四种工作模式,即热发动机,热泵,制冷机和冷发动机。 A pulse tube cooler is a variation on a Stirling chiller. A pulse tube chiller with a piston at room temperature is a reversible pulse tube chiller that works in the same four modes as a Stirling chiller. In this paper, numerical analysis is used to illustrate the four working modes of vascular heat engine, namely, heat engine, heat pump, refrigerator and cold engine.