| 摘要 |
PURPOSE: A device for injecting gas is provided to sufficiently guaranteeing the purity of gas when injecting the gas into a sealing assembling element by injecting the gas after making the inside of the sealing assembling element vacuum. CONSTITUTION: A gas injection device includes a chamber(20) to be opened or closed for maintaining a sealed state, a sealed assembling element(10) received and fixed in the chamber to be opened or closed by an opening and closing bolt(26), an in-chamber driver(50) for opening and closing the sealed assembling element inside the chamber by opening and closing the opening and closing bolt of the sealed assembling element, a gas source(30) for supplying gas into the chamber, and a vacuum pump(40) for withdrawing the air out of the chamber.
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