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自由室温活塞型脉管制冷机调相机构设计和实验研究
投稿时间:2017-03-23  最后修改时间:2017-03-29  点此下载全文
引用本文:周志坡.自由室温活塞型脉管制冷机调相机构设计和实验研究[J].红外,2017,38(7):42~47
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作者单位E-mail
周志坡 中国科学院上海技术物理研究所 上海 zhouzhipozzu@163.com 
中文摘要:采用自由室温活塞取代惯性管及气库作为脉管制冷机(Pulse Tube Cryocooler, PTC)调相机构,不仅可以减小调相机构的体积,还可以提高其制冷性能。为了研究自由室温活塞对脉管制冷机性能的影响,设计加工了一台自由室温活塞脉管制冷机,并进行了实验研究。结果表明,在输入功不变的情况下,运行频率增大时,压缩活塞和自由室温活塞的位移相位角增大,压缩活塞与自由室温活塞的扫气容积之比增大;充气压力增加时,位移相位角增大,扫气容积比减小。研究结果对自由活塞型脉管制冷机的设计及优化具有重要指导意义。
中文关键词:自由室温活塞  调相机构  充气压力  工作频率
 
Phase Shifter Design and Experiment Study of a Free Warm Piston Pulse Tube Refrigerator
Abstract:To use a free warm piston instead of both an inertance tube and a buffer as the phase shifter of a Pulse Tube Cryocooler (PTC) not only can reduce the volume of the phase shifter, but also can improve the performance of the PTR. To study the influence of the free warm piston on the performance of the PTC, a free warm piston PTC is designed and studied experimentally. The results show that for a constant input power, when the working frequency increases, the displacement phase difference between the compressor piston and the free warm piston increases and the swept volume ratio of the compress piston over the free warm piston increases. When the charging pressure increases, the displacement phase difference increases and the swept volume ratio decreases. The results are of great significance to the design and optimization of free warm piston PTCs.
keywords:free warm piston  phase shifter  charging pressure  working frequency
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