Monopole coaxial pulse tube refrigeration device of annular pulse tube structure and design method thereof

Abstract

The invention discloses a monopole coaxial pulse tube refrigeration device of an annular pulse tube structure and a design method thereof. The device comprises a hot-end heat exchanger, a cold-end heat exchanger, an annular pulse tube arranged at the outside, a cylindrical heat regenerator internally coaxial with the pulse tube and the like. According to the device, the annular pulse tube structure is adopted, through the slit structure, the phenomenon that the pulse tube performance is deteriorated due to circulation of working gas alternating in the pulse tube and other reasons is reduced, and the performance of the pulse tube and even the performance of a complete machine are improved; a cold finger can be designed into an annular groove structure or a boss structure, coupling with equipment needing to be refrigerated is more facilitated, the refrigeration time is shortened, and the refrigeration efficiency is improved; the manufacturing process difficulty of the complete machine equipment is lowered, the production efficiency is improved, and the design and machining cost is reduced.

Description

technical field [0001] The invention relates to the field of single-stage pulse tube low-temperature refrigeration, in particular to a pulse tube refrigeration device in which the pulse tube adopts an annular structure. Background technique [0002] Because there are no moving parts at the cold end, after years of development, pulse tube refrigerators have many advantages such as small mechanical vibration, compact and simple structure, long operating life, and high reliability. , mobile communications, agriculture, transportation and many other fields can be widely used. [0003] According to the different arrangement positions of the regenerator and the pulse tube, the structure of the single-stage pulse tube refrigerator can be divided into three types, that is, the linear single-stage pulse tube refrigerator, such as figure 1 As shown, the U-shaped single-stage pulse tube refrigerator, such as figure 2 As shown in the coaxial pulse tube refrigerator, the pulse tube is...

AI Technical Summary

Problems solved by technology

The working gas flowing through the regenerator enters the pulse tube after being deflected by 180°. Although it is diverted by the deflector, it is easy to form a circulation in the pulse tube, which deteriorates the performance of the refrigerator

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