Apparatus for shell freezing a liquid content in a container

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

Patent

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F25D 3/11 (2006.01) F26B 5/06 (2006.01)

Patent

CA 2566014

An apparatus for shell freezing a liquid content in a container, comprising an endless loop conveyor (100) having a conveying length (101) adapted to convey plural containers such as pharmaceutical vials (1010), incorporating plural rollers (106) to spin the containers as they are conveyed by the conveyor (100), and a return length (102), along at least part of the return length (102) the rollers (106) are immersed in a cooling liquid at a temperature below the freezing point of the liquid content of the containers, and along the conveying length (101) the rollers (106) are entirely above the surface of the cooling liquid. A preferred cooling liquid is liquid nitrogen (201), the evaporating vapour (203) of which can be used to shield vials (1010) on the conveying length (101).

Appareil pour congélation en coquille d'un contenu liquide dans un récipient, comprenant un convoyeur à boucle sans fin (100) ayant une longueur de convoyage (101) adaptée pour transporter plusieurs récipients tels que des fioles pharmaceutiques (1010), comportant plusieurs rouleaux (106) faisant tourner les récipients lorsqu'ils sont transportés par le convoyeur (100), et une longueur de retour (102), sur au moins une partie de laquelle (102), les rouleaux (106) sont immergés dans un liquide réfrigérant à une température inférieure au point de congélation du contenu liquide desdits récipients, les rouleaux (106) se trouvant, sur la longueur de convoyage (101), entièrement au-dessus de la surface du liquide réfrigérant. Le liquide réfrigérant préféré est l'azote liquide (201) dont la vapeur (203) provenant de l'évaporation peut être utilisée pour protéger les fioles (1010) sur la longueur de convoyage (101).

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