Method and device for de-icing an intake aperture

Details Method and device for de-icing an intake aperture Method and device for de-icing an intake aperture

G - Physics

08

B

G08B 17/10 (2006.01) G08B 17/00 (2006.01)

Patent

CA 2246330

The invention concerns a method and device for de-icing an intake aperture (2) in an intake duct (1) of a fire-alarm system, through which duct air from the room or apparatus is drawn in and fed to a detector for detecting a fire parameter. In order to effectively prevent an accumulation of ice at the intake aperture (2), a resilient element with a through-hole (3) coaxial to the intake aperture (2) is disposed in or on the latter, a blast of compressed air acting upon the resilient element in order to de-ice the intake aperture (2).

L'invention concerne un procédé et un dispositif permettant de dégivrer un orifice d'aspiration (2) dans le canal d'aspiration (1) d'un système avertisseur d'incendie, à travers lequel l'air provenant d'une pièce ou d'appareils est aspiré et est acheminé jusqu'à un détecteur pour identifier un paramètre d'incendie. Afin d'éviter efficacement une agglutination de givre au niveau de l'orifice d'aspiration (2), il est prévu de placer un élément élastique muni d'une ouverture de passage (3) coaxiale, dans ou sur l'orifice d'aspiration (2), ladite ouverture de passage (3) pouvant être soumise à un jet d'air comprimé en vue du dégivrage de l'orifice d'aspiration (2).

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