Device for the refrigerating and/or the freezing of substances

Details Device for the refrigerating and/or the freezing of substances Device for the refrigerating and/or the freezing of substances

A - Human Necessities

23

L

A23L 3/36 (2006.01) A23L 3/375 (2006.01)

Patent

CA 2661537

The invention relates to a device for refrigerating and/or freezing starting substances, especially food, said device comprising two directly adjacent treatment regions surrounded by a housing. In at least one of the treatment regions, heat is extracted from the starting substances by direct or indirect contact with deep-frozen liquefied gas, while the second treatment region has a transport belt for transporting the starting substances through the second treatment region. Said device comprises a gas suction device by which means a pressure drop can be generated inside the housing, as a result of which cold gas formed in the first treatment region by evaporation of deep-frozen liquefied gas flows out of the first treatment region, and then flows through the second treatment region, also contributing to the refrigerating of the product.

L'invention concerne un dispositif de réfrigération ou de congélation de matières premières, notamment d'aliments, comportant deux zones de traitement directement adjacentes, entourées par un boîtier. Dans au moins une zone de traitement, de la chaleur peut être extraite des matières premières par contact direct ou indirect avec un gaz liquide froid, tandis que la deuxième zone de traitement comporte une bande transporteuse pour le transport des matières premières au travers de la deuxième zone de traitement. Le dispositif comporte un dispositif d'aspiration de gaz permettant de produire une dépression dans le boîtier de telle manière que du gaz froid, produit dans la première zone de traitement par évaporation de gaz liquide très froid, s'écoule hors de la première zone de traitement et parcourt ensuite la deuxième zone de traitement pour y contribuer également au refroidissement du produit.

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