Air treatment plant and method for a flow reduction therein

Details Air treatment plant and method for a flow reduction therein Air treatment plant and method for a flow reduction therein

F - Mech Eng,Light,Heat,Weapons

25

D

F25D 17/06 (2006.01) A23L 3/3409 (2006.01) A23L 3/36 (2006.01) A23L 3/40 (2006.01) F24F 9/00 (2006.01) F25D 13/06 (2006.01) F26B 21/00 (2006.01)

Patent

CA 2069871

An air treatment plant for food is closed with the exception of an inlet and an outlet opening (3). In the plant, a pressure increase needed for circulating the treatment air tends to produce an air flow in one direction (29) through an inlet or outlet tunnel (20) communicating with the inlet or the outlet opening. The tunnel (20) has an upper wall (21) in which are arranged nozzles (22) directed substantially opposite to said direction (29), and a lower wall (23) formed with openings (24) for evacuating the excess air in the tunnel (20) produced by air jets (30) generated by a fan (27) and emanating from nozzles (22). A method for reducing the air floc in the inlet or outlet tunnel thus comprises the steps of directing a plurality of air jets (30) from the upper boundary surface (21) of the tunnel (20) substantially opposite to said direction (29), and evacuating from the tunnel the excess air produced by the air jets through openings (24) in the lower boundary surface (23) of the tunnel.

Installation de traitement d'air pour aliments. Elle est entièrement fermée, à l'exception d'une ouverture d'arrivée/de sortie (3). L'augmentation de la pression nécessaire pour faire circuler l'air en cours de traitement a tendance à y créer un flux d'air unidirectionnel (29) qui se forme par le tunnel d'arrivée ou de sortie (20) communiquant avec l'orifice d'arrivée/de sortie. Ce tunnel (20) a une paroi supérieure (21) garnie de diffuseurs (22) orientés pratiquement à l'opposé de cette direction (29), et une paroi inférieure (23) dotée d'orifices (24) pour l'évacuation de l'excès d'air dans le tunnel (20) produit par des jets d'air (30) créés par un ventilateur (27) et sortant des diffuseurs (22). Ainsi, pour diminuer la quantité d'air circulant dans le tunnel d'entrée/de sortie (20), on dirige une pluralité de jets d'air (30) depuis sa surface supérieure limite (21) en direction sensiblement opposée (29), puis on en évacue l'excès d'air ainsi crée par les orifices (24) percés dans sa surface inférieure limite (23).

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