脉冲管制冷机是一种重要的小型低温制冷机,通常高频脉冲管制冷机采用惯性管加气库的调相方式,然而较大的气库降低了系统的紧凑性。对于直线压缩机,其背腔也具有较大的体积,为提高系统的紧凑性,本文进行了使用压缩机背腔作为气库用于调相脉冲管制冷机的研究工作。研究结果表明采用这种方案的制冷机是可行的,当背腔体积足够大时,通过调整惯性管尺寸,其性能接近使用独立气库的脉冲管制冷机的性能。
As one important cryocooler,the pulse tube cooler usually use inertance-tube plus reservoir as the phase shifter.However,this relatively large volume reservoir makes the cooler not to be as compact as the Stirling cryocoolers.The backside of linear compressor also has a large volume. To improve the compactness,the inertance-tube is connected to the backside of compressor.The theoretical model is present to compare the system performance with the reservoir.The simulation results show that this cooler is able to work properly and can achieve a similar cooling performance after optimizing the size of inertance-tube.
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