System allowing automatic extraction of cold gases in a freezer cabinet operating with a cryogenic fluid

Abstract

The invention relates to a cabinet used for freezing or storing food, medical or biological products, using a cryogenic fluid as cooling fluid, said cabinet being of the type that is: provided with one or more convection fans located in the enclosure of the cabinet and capable of moving the air inside the cabinet and thus of contributing to the thermal exchange that occurs therein; and provided with a system for extracting the gases formed in the enclosure of the cabinet due to the vaporization of said cryogenic fluid, said extraction system including an extraction tube connecting to one wall of the cabinet and linking the enclosure to the outside; characterized in that it includes a flap, located on said wall, at the point where the extraction tube enters the cabinet, and extending into the cabinet, the shape, position and direction of said flap making it possible to divert all or part of the turbulence created by the or said convection fans towards the extraction tube.

1 . (canceled) 
     
     
         2 . A deep-freezing or storage cabinet for food, medical or biological products using a cryogenic fluid as cooling liquid, comprising:
 a cabinet with an enclosure;   one or more convection fans located in the enclosure and capable of agitating air inside the cabinet and thus of contributing to the thermal exchange that occurs therein; and   a system for extracting gases formed in the enclosure due to vaporization of said cryogenic liquid, said extraction system including an extraction tube that is connected to one wall of the cabinet and links the enclosure to the outside, the extraction system including a flap that is located on said wall at a point where the extraction tube enters the cabinet and that extend into the cabinet, a shape, position and orientation of said flap making it possible to divert, toward the extraction tube, all or part of turbulence created by the one or more convection fans.   
     
     
         3 . The deep-freezing or storage cabinet of  claim 1 , wherein the flap is in the form of a scoop. 
     
     
         4 . The deep-freezing or storage cabinet of  claim 1 , wherein the flap is in the form of a truncated cylinder. 
     
     
         5 . The The deep-freezing or storage cabinet of  claim 1 , wherein the flap is in the form of an elbow tube.