Method and apparatus for producing clear, solid ice of...

F - Mech Eng,Light,Heat,Weapons – 25 – C

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F25C 1/18 (2006.01) F25C 1/22 (2006.01) F25C 1/24 (2006.01)

Patent

CA 2420965

The process and equipment, according to this invention, for manufacturing clear, solid ice of spherical and other shapes are capable of making clear ice balls and block ice of other shapes in the mold quickly, efficiently, and with effective energy utilization. This process may include: a) preparing a mold, which comprises an upper mold made of an insulating material and provided with a vertical injection hole drilled therein and a water-jet nozzle fitted in the hole; and a lower mold made of a water-freezing block having coolant pipe embedded therein; b) preparing a lid made of an insulating sheet, said lid having a shape that fits in with a surface shaped for the upper mold and being provided with a bottom flange and a cylinder for being fitted into the vertical injection hole; and a cup of a same insulating sheet, which similarly fits in with a shaped surface of the lower mold and is provided with a top flange; c) assembling the upper mold and the lower mold of the mold after the lid and the cup have been attached tightly to each other to form a container and placed in the mold; d) keeping liquid to be frozen cooled at a predetermined temperature and spraying the liquid intermittently in a direction of a water-freezing block that has been cooled to a predetermined freezing temperature; e) repeating a spraying operation to freeze the sprayed liquid in the container, layer by layer, until clear ice is formed; and f) disassembling the mold under an ice-releasing effect, which the container has on the mold, and immediately taking out the ice.

L'invention porte sur une technique de production de glace stéréoscopique sous forme d'une sphère transparente dans un moule, cette technique étant utilisée dans un procédé et un appareil de production d'une forme stéréoscopique telle qu'une sphère par génération rapide de chaleur et à haut rendement. Le moule (24) comprend : une moitié supérieure (24a) utilisée comme couche de matériau isolant dotée d'un trou d'injection vertical (23) placé dans l'alignement d'une buse (22) de fontaine ; et une moitié inférieure (24b) utilisée comme disque régénérateur (26) dans lequel est encastré un tuyau (25) pour la circulation du milieu de refroidissement. Un élément supérieur (21a) et un élément inférieur (21b) d'un plateau stéréoscopique constitués chacun d'un trou d'injection vertical (23) et d'une partie cylindrique (23a) de fixation sont montés rapprochés sur les faces de moulage des moitiés supérieure et inférieure, puis sont assemblés. Un liquide de congélation régulé à une température prédéterminée est injecté par intermittence vers le disque régénérateur (26) refroidi à la température de congélation prédéterminée afin de laminer et congeler les liquides séquentiellement injectés afin d'obtenir de la glace stéréoscopique (20) sous forme d'une sphère transparente ou analogue. Sous l'effet de séparation des éléments (21) du plateau du moule, le moule est désassemblé, et la glace stéréoscopique (20) sous forme de sphère est extraite instantanément.

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