Patent ID: 8191803
Filing Date: 2012-06-05
Classification: A61B,B05B,Y10T

Abstract:
1. A fluidic oscillator, comprising: a fluid entry port to receive an entry fluid stream; a first chamber coupled to the fluid entry port to receive the entry fluid stream, the first chamber having a shape to cause the entry fluid stream to form two swirling vortices that alternate in strength when the entry fluid stream enters the first chamber; a second chamber fluidically coupled to the first chamber by two fluid paths, when in operation, the two swirling vortices direct fluid to flow out of the first chamber to the second chamber along the two fluid paths, the flow in the fluid paths varying in strength according to the alternating forces of the swirling vortices, the variation in forces causing a fluid vortex to form in the second chamber and cause the vortex to spin in alternating directions; and an exit slit, having a length dimension greater than a width dimension thereof, through a bottom surface of the second chamber, the length of the exit slit being transverse to a longitudinal axis of the oscillator, wherein, when in operation, fluid in the second chamber exits through the exit slit in the bottom surface perpendicular to the path of fluid flow into the second chamber, and the fluid exits in a pattern dependent on the dimensions and location of the exit slit.