Patent ID: 6405944
Filing Date: 2002-06-18
Classification: A61L,B01F,B05B

Abstract:
A nebulization device comprising:a hollow body having a base; a nebulization nozzle head mounted on said base, said nozzle head having an open chamber for mixing and fractionating, said open chamber having an outlet nozzle and a first nozzle opposite to said outlet nozzle, a supply hole formed behind said first nozzle, said nozzle bead having an inlet formed therein in communication with said first nozzle; a source of compressed gas connected by a supply conduit to said supply hole; a reservoir containing a liquid to be nebulized, said reservoir mounted under said hollow body, said nozzle head having said outlet nozzle in communication with an expansion chamber formed in said hollow body coaxial with said open chamber, the liquid being sucked into said open chamber, the liquid being sucked into said open chamber by a partial vacuum created by a gas flow from said first nozzle to said outlet nozzle, the liquid being fractionated and mixed with the gas flow by turbulence in said open chamber, said open chamber having a spreading section in front of said first nozzle, said spreading section having a surface of rotation, said spreading section and a zone of said supply hole being coaxial, said inlet being radial to the air flow across said first nozzle; a third nozzle formed downstream of said supply hole at an intersection of said supply hole with said inlet, said first and third nozzles both being in contact with said inlet and spread apart from each other, said first and third nozzles being formed by sharp edges and axially aligned, said outlet nozzle being a conical jet having fine particles in a center thereof and large particles around a periphery thereof, said expansion chamber receiving the large particles emitted by said jet such that the large particles flow by gravity toward a bottom of said expansion chamber, said expansion chamber having a transverse wall opposite said nozzle head, said transverse wall being perpendicular to said open chamber, said transverse wall having a hole at a center thereof passing through said outlet nozzle, said wall having a convex outer side.