An improved mist generating apparatus and method

A - Human Necessities – 62 – C

Patent

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Details

A62C 31/02 (2006.01) B05B 7/04 (2006.01)

Patent

CA 2688085

An apparatus (10) for generating a mist having a first transport fluid passage (12) having a first transport fluid inlet (12a), a first transport fluid outlet (12b), a throat portion (22) intermediate the first transport fluid inlet (12a) and the first transport fluid outlet (12b), the throat portion (22) having a cross sectional area which is less than that of either the first transport fluid inlet (12a) or the first transport fluid outlet (12b), at least one working fluid passage (14) located radially outwardly of the first transport fluid passage (12) and having a working fluid inlet (14a) and a working fluid outlet (14b), at least one second transport fluid passage (24) having a second transport fluid inlet (24a) and a second transport fluid outlet (24b) in fluid communication with the working fluid passage (14) and an outlet nozzle (16) in fluid communication with the first transport fluid and working fluid outlets (12b,14b). Wherein, the second transport fluid passage (24) has an outlet (24b) located in the working fluid chamber (14) upstream of the working fluid outlet (14b).

L'invention concerne un appareil (10) pour générer un brouillard comprenant un premier conduit de fluide de transport (12) doté d'un premier orifice d'entrée de fluide de transport (12a), d'un premier orifice de sortie de fluide de transport (12b), et d'une partie de gorge (22) entre le premier orifice d'entrée de fluide de transport (12a) et le premier orifice de sortie de fluide de transport (12b), la partie de gorge (22) présentant une zone transversale plus petite que celle du premier orifice d'entrée de fluide de transport (12a), ou du premier orifice de sortie de fluide de transport (12b), au moins un conduit de fluide de travail (14) situé radialement vers l'extérieur du premier conduit de fluide de transport (12) et doté d'un orifice d'entrée de fluide de travail (14a) et d'un orifice de sortie de fluide de travail (14b), au moins un second conduit de fluide de transport (24) doté d'un second orifice d'entrée de fluide de transport (24a) et d'un second orifice de fluide de transport (24b) en communication fluidique avec le conduit de fluide de travail (14) et un buse de distribution (16) en communication fluidique avec les premiers orifices de sortie de fluide de transport et de fluide de travail (12b, 14b). Le second conduit de fluide de transport (24) est doté d'un orifice de sortie (24b) situé dans la chambre de fluide de travail (14) en amont de l'orifice de sortie de fluide de travail (14b).

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