| 摘要 |
PURPOSE:To evenly supply liquefied CO2 by arranging a main pipe inclined downward on the downstream side with a specific elevation angle and projectingly providing a branched pipe in a direction intersecting perpendicularly to the main pipe and inclined downward on the downstream side with a specific elevation angle. CONSTITUTION:When a solenoid valve 4S in a gas-liquid separator 4 is open, a gas in the separator 4 is discharged and simultaneously liquefied CO2 flows in from a introducing pipe 3 and reaches introducing pipe 5f through the main pipe 5 and the branched pipe 5S. When the introducing pipe 5f and the main pipe 5 are successively filled with the liquefied CO2 and finally the gas-liquid separator 4 is also filled, the solenoid valve 4S is closed and the flow-in of the liquefied CO2 is stopped. On the other hand, a vaporized gas generated by heat input in the main pipe 5 flows back to the gas-liquid separator 4 along the highest part of the inside wall of the main pipe 5 since the downstream of the main pipe 5 is inclined downward with -1 deg. to -5 deg. elevation angle. And a vaporized gas generated on the downstream of the main pipe 5 also flows back to the gas-liquid separator 4 while going up in the pipe since the branched pipe 5S is inclined downward with -0 deg. to -60 deg. elevation angle and then the gas free from liquefied CO2 is constantly supplied to a snow forming opening. |
