Improved fluid mixing nozzle and method

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 1/34 (2006.01) B01F 5/02 (2006.01) B01F 5/04 (2006.01) B05B 1/00 (2006.01) B01F 5/00 (2006.01)

Patent

CA 2238629

An improved fluid mixing nozzle (10) and method, in which a first fluid flows therefrom to mix with a second fluid external the nozzle, for inducing vortex creation and chaotic turbulent flow. The nozzle (10) has a body (20) with a cavity (26) extending therethrough from the inlet end (22) to the outlet end (24). The cross-sectional area of the inlet orifice (30) of the nozzle (10) is greater than its outlet orifice (40) cross-sectional area. The outlet orifice (40) cross-sectional shape has a substantially circular central portion (42) and at least one (but typically more than one) protrusion (50) extending from the perimeter of the central portion (42). Generally, the protrusions (50) are smaller in cross-sectional area than the central portion (42), are equally spaced about the central portion (42) perimeter, and have a length to width ratio from 1 to 2. Functionally applying the above described nozzle (10) is a method of improved mixing, of creating chaotic turbulent flow, and of inducing vortex creation.

L'invention concerne une buse de mélange améliorée (10) pour fluides et un procédé de mélange amélioré. Un premier fluide circule dans la buse pour se mélanger avec un second fluide externe à la buse, et y induire un tourbillon, avec un écoulement de caractère turbulent et chaotique. La buse (10) a un corps (20) avec une cavité (26) qui le traverse, depuis une extrémité d'entrée (22) jusqu'à une extrémité de sortie (24). La surface transversale de l'orifice d'entrée (30) de la buse (10) est supérieure à la surface transversale de l'orifice de sortie (40). La section transversale de l'orifice de sortie (40) a une portion sensiblement circulaire (42) et au moins une (mais normalement plus d'une) saillie (50), partant du périmètre de la portion centrale (42). Généralement, les saillies (50) sont plus petites en coupe transversale que la portion centrale (42), elles sont disposées à distance égale suivant le périmètre de la portion centrale (42) et elles ont un rapport longueur sur largeur allant de 1 à 2. La buse (10) de l'invention permet d'améliorer le mélange, de créer un écoulement turbulent et chaotique, et d'induire la création d'un vortex.

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