Cross Current Dual Aerodynamically Shaped Atomizer Electrostatic Spray Nozzle

Experimental results of a novel method and apparatus for achieving selective deposition on the inside surfaces of an enclosure are presented. An apparatus consisting of two aerodynamically shaped air shear nozzlesa generated a charged dual cloud comprising an insecticide aerosol cloud above and a water aerosol cloud below. Through self-expansion of the cloud by mutual repulsion of the charged particles and image attraction to the wall surfaces, a significantly selective deposition was achieved on the inside surfaces in the upper and lower halves of the enclosure.