Patent Number: 6,167,708

Title: Process and apparatus for the in-line freezing of products

Abstract: A process for in-line partial or complete freezing of products inside an enclosure comprising the steps of: introducing the products into the enclosure on a conveyor comprising an upper run and a lower run, the upper run including an upper face and a lower face; impregnating the conveyor with a cryogenic liquid by spraying the cryogenic liquid on the lower face of the upper run of the conveyor; bringing the product into contact with the conveyor and partially or completely freezing the product by heat transfer between the product and the cryogenic liquid retained in the structure of the conveyor; monitoring the impregnation of the conveyor; regulating the spraying of cryogenic liquid depending on the result of the monitoring. An apparatus for carrying out the process is also disclosed.

Inventors: Cloarec; Alain (Longjumeau, FR)

Assignee: L'Aire Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

International Classification: A23L 3/375 (20060101); A23L 3/36 (20060101); F25D 29/00 (20060101); F25D 3/10 (20060101); F25D 3/11 (20060101); F25D 013/06 ()

Expiration Date: 01/02/2018