Nebulisation venturi and device comprising the same where the nature of the particles produced can be varied

摘要

A nebulisation venturi (64) is disclosed in which the nature of the particles may be varied. The nebulisation venturi (64) comprises a liquid supply conduit (20) and compressed air supply conduit (10), each duct having a nozzle opening in the nebulisation zone (30). Air arriving under pressure from the supply conduit (10) nebulises the liquid coming from the liquid supply conduit (20). The venturi (64) also comprises regulation means (70) for the relative position of the liquid supply duct nozzle (25) with relation to the compressed air supply duct nozzle (15). The regulation means (70) can adjust at least the longitudinal position of the liquid supply nozzle (25) and/or its angular position. A chamber (75) placed at the outlet of the nebulisation zone (30), includes at least one wall (80) positioned parallel to the longitudinal axis of the air intake conduit (10). The chamber (75) acts to block the particles located on the outer edge of the flow of particle from the nebulisation zone (30) to restrict the spray pattern. The venturi preferably comprises a supply duct for free air (40) with a nozzle (45) in the nebulisation zone (30) and an opening to the outside. (62) Divided Out of 542677