Multi-stage pulse tube refrigerator adopting relay linear compressor

Abstract

The invention discloses a multi-stage pulse tube refrigerator adopting a relay linear compressor. The multi-stage pulse tube refrigerator comprises a compressor, a regenerator hot end heat exchanger, a high-temperature section regenerator, high-temperature section regenerator cold end heat exchangers, a first-stage pulse tube, a first-stage pulse tube hot end heat exchanger and first-stage phase-modulating parts, which are sequentially connected, the multi-stage pulse tube refrigerator also comprises a low-temperature section regenerator, low-temperature section regenerator cold end heat exchangers, a second-stage pulse tube, a second-stage pulse tube hot end heat exchanger and second-stage phase-modulating parts, which are sequentially connected, the cold end of the high-temperature section regenerator is also connected with the hot end of the low-temperature section regenerator through a pipeline, and the pipeline is provided with the relay linear compressor which is used for compressing the air passing through the pipeline. The pressure ratio of the cold end of the high-temperature section regenerator of the multi-stage pulse tube refrigerator adopting the relay linear compressor is further increased, consequently, a high pressure ratio is obtained at the cold end of the multi-stage pulse tube refrigerator, and the efficiency of the multi-stage pulse tube refrigerator is ultimately increased; and meanwhile, the multi-stage pulse tube refrigerator has the advantages of compact structure, long service life, high reliability and the like.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a multi-stage pulse tube refrigerator using a relay linear compressor. Background technique [0002] Table 1 gives the black body radiation temperature corresponding to different types and wavelengths of electromagnetic waves in space detection, and the applicable detector types and operating temperatures. It can be seen from Table 1 that a considerable number of detectors work at 4K and mK levels Temperature zone, and mK temperature zone must provide pre-cooling in 4K temperature zone, so 4K temperature zone is an extremely important temperature zone in space exploration, and has always been the focus and difficulty of scientific research. [0003] Table 1: Black body radiation temperature corresponding to different types and wavelengths of electromagnetic waves and applicable detection [0004] type and operating temperature [0005] [0006] [0007] At present, ...

AI Technical Summary

Problems solved by technology

When using the above-mentioned split Stirling refrigerator, it is still difficult to obtain a temperature range below 4K, and the cooling efficiency is very low

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