Spraying nozzle and device for spraying a mixture of water...

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 7/00 (2006.01) B05B 7/06 (2006.01) F25C 3/04 (2006.01)

Patent

CA 2159108

The nozzle comprises an internal chamber (8) supplied with pressurized fluid which communicates with an annular discharge orifice (5). It comprises an internal channel (2) centered on the annular orifice axis and whose diameter corresponds substantially to the diameter of said annular orifice, said channel providing for a double flow around the nozzle and the fluid film coming out of the orifice. The nozzle may be used to spray all types of fluids: water, fuel, in applications involving high flow rates in the order of 5 to 60m<3>/h, yet in very fine droplets. The spraying device fitted with such nozzle comprises preferably two contrarotary fans (22 and 23). The nozzle (1) may also be provided with nucleators (70) arranged on its periphery so as to provide seeding of the water/air mixture for the production of artificial snow. The disclosed spraying device has the advantage of being particularly compact.

La buse comprend une chambre interne (8) alimentée en fluide sous pression qui communique avec un orifice d'éjection (5) annulaire. Elle comporte un canal interne (2) centré sur l'axe de l'orifice annulaire et dont le diamètre correspond sensiblement à celui de ce dernier, lequel canal permet d'établir un double flux autour de la buse et le film de fluide qui sort dudit orifice. Une telle buse permet de pulvériser tous types de fluides: eau, carburant, dans des domaines où les débits sont importants de l'ordre de 5 à 60m3/h, avec cependant une pulvérisation en gouttelettes très fines. Le dispositif de pulvérisation équipé d'une telle buse comprend de préférence, deux ventilateurs (22 et 23) contrarotatifs. La buse (1) peut également être équipée de nucléateurs (70) disposés sur sa périphérie de façon à réaliser un ensemencement du mélange eau et air pour la fabrication de neige artificielle. Ce dispositif de pulvérisation présente l'avantage d'être particulièrement compact.

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