摘要
超高频脉冲管制冷机体积小、重量轻,在空间应用中备受关注,近几年来成为该领域的一个前沿发展方向。由于直线型脉冲管制冷机结构简单、方便调试,在模拟计算的基础上加工直线型试验样机,根据直线型试验样机的优化结果设计加工同等尺度的同轴型原理样机,其冷指外径仅有9 mm,长度40 mm,质量为250 g。同轴型样机经过压缩机的匹配和双向进气结构的优化,采用谐振频率为50 Hz高频压缩机工作在90 Hz驱动,80 W电功率输入下可获得46.4 K无负荷最低温度,在80 K可获得2.1 W制冷量。由于冷指尺寸小、运行频率高,冷头降温速度快,2 min即可从室温降至工作温区80 K,且冷头温度不受重力影响。
With compact size and low mass,the ultra-high frequency pulse tube has got big attention for space application and has become the frontier of the pulse tube research.For simple configuration and easy to debug,the in-line type pulse tube cryocooler is fabricated and optimized on the basis of simulation calculation firstly.Then the coaxial pulse tube with same dimension of the in-line pulse tube is fabricated.The cold finger of the coaxial pulse tube has 9 mm outer diameter,40 mm length and mass of 250 g mass.After the match of compressor and the optimization of the double inlet,driven by a liner compressor designed for 50 Hz operating at 90 Hz,the no-load temperature reaches to 46.4 K,and the cooling power is 2.1 W at 80 K with 80 W electric power input.Because of the low mass and the high operating frequency,the temperature of the cold end can decrease to working temperature 80 K from room temperature 300 K in two minutes and the gravity has little effect on the performance.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2011年第6期156-159,共4页
Journal of Mechanical Engineering
基金
国家自然科学基金资助项目(51006112)
关键词
超高频
微型化
同轴
脉冲管制冷机
Ultra-high frequency Miniature Coaxial Pulse tube cryocooler
