| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing apparatus of a dry ice whose requirements are supplied to a box and a bag containing frozen goods at a store under any environmental condition such as temperature. SOLUTION: The dry ice manufacturing apparatus is provided with a horn and the nozzle 7 which is located over the horn and used for spraying gaseous carbon dioxide which is changed to a powdery dry ice by adiabatic expansion. A means of deciding spraying time 1 detects or calculates parameters and controls spraying time because the dry ice production varies with temperature around the apparatus, pressure within a cylinder of the liquefied carbon dioxide and the like. |
