Integrated security system for smoke extractor

F - Mech Eng,Light,Heat,Weapons – 23 – L

Patent

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Details

F23L 17/00 (2006.01) F23M 11/00 (2006.01) F24F 7/02 (2006.01)

Patent

CA 2322703

The invention concerns a system to be placed at the outlet of a duct (1) and is equipped with a suction device (6) such as a turbine for generating low pressure in the duct (1), characterised in that it comprises two separate air intakes (7, 8) integrated in the extractor and arranged in locations under low pressure and high pressure respectively relative to atmospheric pressure, said air intakes being connected to a pressure switch, for triggering a security event when the detected differential pressure drops beneath a threshold value, which indicates that the extractor is not functioning properly. The invention is a useful equipment for various premises, in particular industrial or residential.

Système de sécurité incorporé pour extracteur de fumées, placé à la sortie d'un conduit (1) et équipé d'un dispositif d'aspiration (6) tel qu'une turbine apte à générer une dépression dans le conduit (1), et comportant deux prises d'air séparées (7,8) incorporées à l'extracteur et disposées en des emplacements respectivement sous dépression et en surpression par rapport à la pression atmosphérique, ces prises d'air étant connectées à un pressostat formant interrupteur, apte à déclencher un évènement sécuritaire lorsque la pression différentielle détectée descend en delà d'une valeur-seuil, ce qui est un signe d'un dysfonctionnement de l'extracteur. Equipement pour locaux divers, notamment à usage industriel ou d'habitation.

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