Fire fighting nozzle for projecting fog cloud

A - Human Necessities – 62 – C

Patent

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Details

A62C 31/02 (2006.01)

Patent

CA 2578567

A mist generating nozzle (10) produces a swirling fog pattern (76) having a forward thrust component that permits an operator, stationed safely at a remote location relative to a fire source (74), to exercise directional control and positioning of a relatively large mist cloud on or about the fire source. The discharge nozzle includes a cylindrical bearing member (16) and a cylindrical sleeve member (40) with a plurality of water discharge orifices (42 ) that extend at a forward projection angle () transverse to the nozzle axis (20). A pair of the fog producing nozzles (10) are configured with counter-rotating rotors, producing counter-rotating clouds (76, 78) that merge along a common vortex (80). This produces a composite mist cloud having a magnified forward thrust component, enabling remote directional control of the mist cloud.

La présente invention concerne une buse génératrice de brouillard (10) qui produit un motif de brouillard tourbillonnant (76) possédant une composante de poussée vers l'avant qui permet à un utilisateur, placé en sécurité à un endroit distant par rapport à la source de feu (74), d'exercer une commande directionnelle et de positionner un nuage de brouillard relativement massif sur ou autour de la source de feu. La buse de décharge comprend un palier cylindrique (16) et un manchon cylindrique (40) avec une pluralité d'orifices de décharge d'eau (42) qui s'étendent selon un angle de projection vers l'avant perpendiculaire à l'axe de la buse (20). Une paire de buses de production de brouillard (10) sont agencées avec des rotors tournant en sens inverse, produisant des nuages tournant en sens inverse (76, 78, qui fusionnent le long d'un vortex commun (80). Ceci produit un nuage de brouillard composite possédant une composante de poussée vers l'avant amplifiée et, permettant une commande directionnelle à distance de ce nuage de brouillard..

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