Sprinkler nozzle

A - Human Necessities – 62 – C

Patent

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Details

A62C 37/08 (2006.01) A62C 31/02 (2006.01)

Patent

CA 2189118

The proposed invention concerns a sprinkler nozzle for the atomization of foam or water, in particular for the purpose of extinguishing fires. It comprises a head component provided with a channel which tapers in the direction of the supplied medium and has an inlet and outlet. It has a bridge which connects with the channel and has supports arranged at a distance from each other which join at the base, between which a support cone is situated on a distributor star. The distance between the channel outlet and the scattering pot is more or less equal to the distance between the outlet and inlet of the head. The generatrices of the conical tapering of the channel converge in the support cone. According to the invention, the support cone has a rebounding pot consisting of a cylindrical bore and an inner cone at the base. The generatrices of the channel converge in the rebounding pot and the surface of the distributor star encloses an angle a of 0-5?and preferably 3? with the vertical plane to the central axis of the nozzle.

L'invention a pour objet une buse pour sprinkler, pour la pulvérisation de mousse et/ou d'eau, notamment pour l'extinction d'incendies, comprenant un élément formant une tête et un conduit avec une admission et une sortie, disposé dans cet élément, de section réduite en direction du fluide amené. La buse présente un pont raccordé à ce conduit, comportant des appuis distants les uns des autres, réunis à la base, entre lesquels est disposé un cône-support reposant sur une étoile distributrice, la distance entre la sortie du conduit et le pot de rebondissement étant sensiblement égale à la distance entre la sortie et l'admission de la tête. Les génératrices de l'étranglement conique du conduit convergent dans le cône-support. L'invention est caractérisée en ce que le cône-support présente un pot de rebondissement comprenant un alésage cylindrique et un cône intérieur formant la base, en ce que les génératrices du conduit convergent dans le pot de rebondissement et en ce que la surface de l'étoile distributrice forme avec le plan perpendiculaire à l'axe de la buse, un angle .alpha. de 0 à 5~, de préférence de 3~.

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