摘要
通过在脉管制冷机传输管两侧增加并联气库实现传输管体积的调节,仅通过容抗调节进行压缩机与冷头的阻抗匹配优化,提高脉管制冷机整机效率。实验证明,气库型传输管相比于利用综合阻抗调节的传统细长型传输管具有相同的阻抗匹配优化效果。该方法采用长径比较小的气库型传输管,引入的体积流阻抗很小,可以极大减少声功的传输损失。气库型传输管的阻抗特性与布置方式无关,可充分利用压缩机周边的空间,更易于安装和调试,使整机结构更加紧凑。
The parallel reservoir was added on both sides of the transfer tube of pulse tube cryocooler to achieve the volume adjustment of the transfer tube, which only use the capacitive impedance to change the impedance matching between the compressor and the cold head and to improve the whole machine efficiency. Experiments show that the reservoir transfer tube has the same impedance matching effect as the traditional slender transfer tube which adopts integrated impedance adjustment method. A smaller length-diameter ratio of the reservoir transfer tube can reduce the additional volume flow impedance and the transmission loss of acoustic power. The arrangement of the parallel reservoir has no influence on the impedance characteristics. Thus, it can make full use of the surrounding space of the compressor to realize compact and easy installation of the whole machine in practice.
出处
《低温工程》
CSCD
北大核心
2017年第6期1-6,共6页
Cryogenics
基金
国家重点研发计划(2017YFB0603701)
国家自然科学基金青年项目(No.51706196)
关键词
气库型传输管
阻抗匹配
脉管制冷机
线性压缩机
reservoir transfer tube
impedance matching
pulse tube cryocooler
linear compressor
