Spraying method and nozzle for atomization of a liquid

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 7/04 (2006.01) B01J 2/16 (2006.01)

Patent

CA 2737659

A method for atomizing a liquid (L) in a spraying nozzle (1), wherein a gaseous phase (G) and said liquid (L) are fed to a mixing chamber (30) inside said nozzle (1), obtaining an emulsion of the gas in the liquid, the emulsion being under pressure inside said chamber and formed by gas bubbles enveloped by the liquid in a film state; the speed of the gaseous phase at the inlet of the mixing chamber is around the speed of sound or greater, and the atomized liquid is obtained by an expansion of said emulsion at the outlet of said chamber. A suitable nozzle (1) is also disclosed, comprising a mixing chamber (30) and a distribution device (D) adapted to provide appropriate gas and liquid feed to form said emulsion.

La présente invention se rapporte à un procédé datomisation dun liquide (L) dans une buse de pulvérisation (1). Une phase gazeuse (G) et ledit liquide (L) sont introduits dans une chambre de mélange (30) à lintérieur de ladite buse (1), obtenant une émulsion du gaz dans le liquide, lémulsion étant sous pression à lintérieur de ladite chambre et formée de bulles de gaz enveloppées par le liquide dans un état de film ; la vitesse de la phase gazeuse à lentrée de la chambre de mélange se situe autour de la vitesse du son ou à un niveau plus élevé, et le liquide atomisé est obtenu par une dilatation de ladite émulsion à la sortie de ladite chambre. Linvention décrit également une buse appropriée (1), comprenant une chambre de mélange (30) et un dispositif de distribution (D) conçu pour permettre une introduction de gaz et de liquide appropriée pour former ladite émulsion.

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