Patent ID: 9457436
Filing Date: 2016-10-04
CPC Classification: B23P,F25B,Y10T

Claim Text:
1. A method of manufacturing a cryogenic regenerator, comprising: replacing air within a helium gas sealing tube having a front end portion and a rear end portion that are open by supplying helium gas through the front end portion and exhausting the air from the rear end portion before sealing the rear end portion; sealing the rear end portion of the helium gas sealing tube after replacing the air; cooling the helium gas sealing tube after sealing the rear end portion and filling additional helium gas into the cooled helium gas sealing tube through the front end portion from a helium gas supplying unit; sealing the front end portion of the helium gas sealing tube after the helium gas sealing tube is filled with the additional helium gas; and fabricating a helium gas sealing tube wound structure by winding the helium gas sealing tube into a coil structure around a core material, wherein the helium gas sealing tube is a metallic tube, wherein the step of sealing the rear end portion of the helium gas sealing tube includes crushing and hermetically sealing the rear end portion of the helium gas sealing tube, and wherein the step of sealing the front end portion of the helium gas sealing tube includes crushing and hermetically sealing the front end portion of the helium gas sealing tube.