论文部分内容阅读
为了克服第三代脉管制冷机存在的制冷温度不稳定的缺陷， 本文从提高脉管制冷效率， 进一步降低制冷温度的角度， 对有阀型小孔脉管制冷机进行了研究。通过理论计算和实验改进， 有阀型单级脉管制冷机取得了 ３４ Ｋ 的无负荷制冷温度，在 ８０ Ｋ 获得３０ Ｗ 以上的制冷功率， 其制冷效率达到国外同类商品型有阀脉管制冷机的水平。
In order to overcome the shortcoming of instability of refrigeration temperature in the third generation pulse tube refrigerator, this paper studied the valve-type pinhole pulse tube refrigerator from the perspectives of improving the pulse tube cooling efficiency and further reducing the cooling temperature. Through the theoretical calculation and experimental improvement, the valve-type single-stage pulse tube refrigerator achieves a no-load refrigeration temperature of 34 K and a cooling power of more than 30 W at 80 K, which achieves the refrigeration efficiency of the similar commercial valve- Machine level.