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传统的脉冲管制冷机因为不能回收声功,调相能力有限,因此效率难以满足一些应用场合的要求。本文提出了一种多缸脉冲管制冷机结构,它主要由多台直线压缩机和脉冲管制冷机组成,通过控制压缩机活塞之间的相位使脉冲管制冷机获得理想的声场,同时通过压缩机的膨胀活塞回收从次水冷器流出的声功,从而使整机相对卡诺效率可以达到35%以上,远远高出传统脉冲管制冷机能够达到的效率。多缸脉冲管制冷机的结构非常适合于较大制冷量的场合,在超导电网等方面将会有巨大的应用前景。
The traditional pulse tube refrigerator because it can not recover sound power, phase modulation capacity is limited, so the efficiency is difficult to meet the requirements of some applications. This paper presents a multi-cylinder pulse tube refrigerator structure, which is mainly composed of multiple linear compressor and pulse tube refrigerator, by controlling the phase between the compressor piston pulse tube refrigerator to obtain the desired sound field, while compression The expansion piston of the machine recovers the acoustic energy flowing out of the secondary water cooler, so that the relative relative Carnot efficiency of the whole machine can reach over 35%, which is much higher than the efficiency that the traditional pulse tube refrigerator can achieve. Multi-cylinder pulse tube refrigerator structure is very suitable for large cooling capacity of the occasion, the superconducting wire mesh and so will have a huge application prospect.