High frequency pulse tube refrigerator

Abstract

The invention provides a high-frequency pulse tube refrigerating machine which comprises a linear compressor (1), a connecting pipe (2), a heat regenerator hot end heat exchanger (3), a heat regenerator (4), a cold end heat exchanger (5), a pulse tube (6), a hot end heat exchanger (7), an inertia pipe (8), and a tubular air reservoir (11), wherein the linear compressor (1), the connecting pipe (2), the heat regenerator hot end heat exchanger (3), the heat regenerator (4), the cold end heat exchanger (5), the pulse tube (6), the hot end heat exchanger (7), the inertia pipe (8), and the tubular air reservoir (11) are connected in sequence. The tubular air reservoir adopts a pipe with the diameter ranging from 8 to 20 millimeters as an air reservoir, one end of the tubular air reservoir is connected with the inertia pipe, and the other end of the tubular air reservoir is closed. Compared with an ordinary air reservoir, the tubular air reservoir is greatly reduced in weight and size. The tubular air reservoir can play a role of the ordinary air reservoir on one hand, and can use the inertia effect of air in the pipe to adjust the phase in the inertia pipe to further improve the performance of the refrigerating machine on the other hand. At the same time, the adoption of the tubular air reservoir enables the structure of the high-frequency pulse tube refrigerating machine to be compact, and is beneficial for the practicability and application in space.

Description

technical field [0001] The invention relates to the field of small low-temperature refrigerators, in particular to high-frequency pulse tube refrigerators. Background technique [0002] With the continuous development of space technology, the research on small and micro cryogenic refrigerators for cooling infrared detectors and high temperature superconducting devices has aroused great interest of scholars from all over the world. As a kind of small low-temperature refrigerator, high-frequency pulse tube refrigerator has the advantages of no moving parts at the cold end, simple structure, high reliability and good anti-electromagnetic interference. applications in the space field. [0003] The development of pulse tube refrigerators has gone through basic type, small hole type, two-way inlet type, multi-way bypass type and inertial tube type. The basic pulse tube refrigerator is the original type of high frequency pulse tube refrigerator. It uses a hollow tube, when there...

AI Technical Summary

Problems solved by technology

[0008] However, if the volume is too large, the layout of the gas storage becomes difficult

Ordinary gas storage has occupied a considerable part of the overall volume and mass of the refrigerator, and a larger gas storage will limit the application of this type of refrigerator and become a constraint factor for the miniaturization of the refrigerator

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