Manufacturing method of ultra-low temperature regenerator and ultra-low temperature regenerator

Abstract

The invention provides a method for manufacturing a small ultra-low temperature regenerator capable of functioning alone, using helium as a regenerator material, and the ultralow temperature regenerator. The manufacturing method of this ultra-low temperature regenerator includes: the process of supplying helium gas to the helium gas sealing pipe (64) opened at both ends (64A, 64B); the process of closing the terminal part (64B) of the helium gas sealing pipe (64); The process of filling the helium gas sealing pipe (64) from the helium gas supply device (75) with helium gas in the state of cooling the helium gas sealing pipe (64); and filling the helium gas sealing pipe (64) with helium gas Thereafter, the process of closing the start end portion (64A) of the helium gas filling pipe (64) is performed.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2012-155464 filed on July 11, 2012. All the content of the application is incorporated in this specification by reference. [0002] The invention relates to a manufacturing method of an ultra-low temperature regenerator using helium as a regenerator material and the ultra-low temperature regenerator. Background technique [0003] Generally, known cold storage refrigerators having a cold storage include a Gifford-McMahon (GM) refrigerator, a pulse tube refrigerator, a Stirling refrigerator, and a Solvay refrigerator. The regenerator installed in these regenerative refrigerators is configured to cool the refrigerant gas when the refrigerant gas flows into the expansion chamber, etc., and the cold refrigerant gas passes through the regenerator, thereby storing the coldness of the refrigerant gas. . Therefore, the refrigeration efficiency of the refrigerator can be improved by arr...

AI Technical Summary

Problems solved by technology

[0007] However, a regenerator with a structure in which helium pressure is maintained by a buffer tank requires a larger volume buffer tank

Therefore, the structure of the refrigerating machine provided with the cold accumulator becomes complicated and troublesome to manufacture.

In addition, there is still a problem that it cannot be applied to the GM refrigerator in which the cold storage material is stored in the displacer, which is actually being used.

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