Nebulizer comprising means for overpressurizing a liquid to...

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 17/06 (2006.01)

Patent

CA 2585329

The invention relates to a device (30) for nebulising a liquid, comprising a nebulisation head (40) with a capillary tube (40-1) and an ejection nozzle (40- 2) for the ejection of a liquid (43), a reservoir (42) for the supply of liquid (43) to the nebulisation head, a vibrating means (44) for vibrating the nebulisation head, in order to eject liquid droplets into a nebulisation jet. According to the invention, the device (30) comprises means for application of a pressure greater than a first threshold pressure, above which the liquid flows through the nebulisation head when not in vibration, and below a second threshold pressure above which the liquid flows through the nebulisation head when in vibration, to the liquid at the entrance to the nebulisation head (40), during nebulisation cycles. The above has the advantage of increasing nebulisation flow and low sensibility to changes in attitude and vibrations.

L'invention concerne un dispositif (30) de nébulisation d'un liquide, comprenant une tête de nébulisation (40) comportant un tube capillaire (40-1) et une buse (40-2) d'éjection d'un liquide (43) , un réservoir (42) d'alimentation en liquide (43) de la tête de nébulisation, un moyen vibrant (44) pour entraîner la tête de nébulisation en vibration afin qu'elle éjecte des gouttelettes de liquide en un jet de nébulisation. Selon l'invention, le dispositif (30) comprend des moyens pour appliquer au liquide à l'entrée de la tête de nébulisation (40) , pendant des cycles de nébulisation, une pression supérieure à un premier seuil de pression au-delà duquel le liquide coule à travers la tête de nébulisation lorsque celle-ci n'est pas entraînée en vibration, et inférieure à un second seuil de pression au-delà duquel le liquide coule à travers la tête de nébulisation lorsque celle-ci est entraînée en vibration. Avantages : augmentation du débit de nébulisation et faible sensibilité aux changements d'assiette et aux vibrations .

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