Patent ID: 7775456

Claim:
A fluidic device that operates on a pressurized liquid flowing through said device to generate in the gaseous environment surrounding said device a three-dimensional, oscillating spray of liquid droplets having desired flow characteristics, said device comprising: a member having two boundary surfaces, wherein each of said boundary surfaces having fabricated therein a liquid flow channels, wherein each of said liquid flow channels being configured in the form of a fluidic circuit having an inlet, an outlet, a centerline and a bottom surface which extends therebetween, and a characteristic dimension “h”, wherein each of said liquid flow channels being further configured proximate said outlet of said flow channel so that said channel bottom surface and said boundary surface in which said channel is fabricated assume a continuous curvature so as to redirect the direction of said channel centerline to cause each of said channels to converge towards the other said channel while keeping said channel characteristic dimension “h” constant along the length of said channel over which said channel redirection is imposed, wherein the straight line projections of said centerlines, that extend from said circuit outlets, intersect at a prescribed intersection angle, Θ, and said outlets are separated by a characteristic separation distance, “w,” and wherein the values of said intersection angle, Θ, and said separation distance, “w,” and the configurations of said fluidic circuits are chosen so as to yield the desired flow characteristics of said spray.