| 摘要 |
PURPOSE: Provided are gas injection device for balloon, and method for controlling the same to inject a helium gas of a determined amount into a balloon, by detecting the arranged state of the balloon, and constantly flowing the helium gas, and besides by detecting and controlling the pressure inside a gas tank. CONSTITUTION: The gas injection device for balloon includes; a gas tank(1) having helium gas within; a pressure adjuster(2) connected to the outlet of the gas tank(1) and constantly regulating the pressure of the helium gas; an electronic valve(3) connected to the outlet side of the gas tank(1) and controlling the helium stream according to the electric signal of the pressure adjuster(2); a gas rate adjuster(4) dropping the pressure on the outlet of the electronic valve(3); a gas inlet(5) arranged on the outlet of the gas flow rate adjuster(4); a balloon detecting switch(6) detecting a balloon(20) installed on the gas inlet(5); a pressure switch(7) detecting the pressure between the pressure adjuster(2) and the electronic valve(3); and a controller(8) outputting a command signal.
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