| 摘要 |
PROBLEM TO BE SOLVED: To constantly supply a prescribed quantity of dry ice regardless of the change of various use conditions such as the surrounding temp. and the like in a device for supplying dry ice in a box or a bag of a frozen product or the like in a shop or the like. SOLUTION: A jetting nozzle 7 for generating the dry ice is provided above a horn and carbon dioxide gas is jetted from the nozzle 7. The carbon dioxide gas is turned to powdery dry ice by the adiabatic expansion at the time of being jetted from the nozzle 7 into the horn. At this time, because the formation quantity of the dry ice is changed by the surrounding temp., the pressure in a liquefied carbon dioxide bomb, the elapsed time after the finish of the jetting in the previous time and the like, the parameters thereof are detected and calculated by a jetting time setting means 1 in a controller and the jetting time is properly controlled corresponding to the values. |
