A kitchen hood assembly with a combination cleaning and fire...

F - Mech Eng,Light,Heat,Weapons – 24 – C

Patent

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Details

F24C 15/20 (2006.01) A62C 3/00 (2006.01) B01D 35/16 (2006.01) B01D 46/04 (2006.01)

Patent

CA 2723392

A kitchen hood assembly includes a combination hood cleaning and fire suppression system. The hood assembly includes a hood structure and a riser connected thereto. An exhaust blower forces an exhaust stream of air into the hood and through the riser. A combination hood cleaning and fire suppression system is incorporated into the hood structure. The combination hood cleaning and fire suppression system includes an elongated spray bar that is connected to a water source and includes a surfactant injector that injects a surfactant into the water being directed to the spray bar. In one mode of operation, the spray bar is effective to clean the hood assembly. In another mode of operation, when a fire is sensed in or in the vicinity of the hood, the same spray bar is utilized to inject an aqueous liquid into the hood to suppress the fire.

Linvention concerne un ensemble hotte de cuisine qui inclut une combinaison dun système de nettoyage de la hotte et de suppression des flammes. Lensemble hotte inclut une structure de hotte et un tube vertical connecté à cette structure. Un ventilateur daspiration force un courant dair déchappement dans la hotte et dans le tube vertical. Une combinaison dun système de nettoyage de la hotte et de suppression des flammes est incorporée dans la structure de hotte. La combinaison dun système de nettoyage de la hotte et de suppression des flammes inclut une barre de pulvérisation allongée qui est connectée à une source deau et inclut un injecteur de tensioactif qui injecte un tensioactif dans leau qui est dirigée vers la barre de pulvérisation. Selon un mode de fonctionnement, la barre de pulvérisation est efficace pour nettoyer lensemble hotte. Selon un autre mode de fonctionnement, lorsque des flammes sont détectées dans ou à proximité de la hotte, la même barre de pulvérisation est utilisée pour injecter un liquide aqueux dans la hotte pour supprimer les flammes.

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