Patent ID: 6010083
Filing Date: 2000-01-04
Classification: B05B,Y10S

Abstract:
A foam generating apparatus for generating high quality foam from a flow of pressurized aqueous foaming solution comprising:(a) an inlet to receive pressurized, aqueous foaming solution;(b) an liquid spray nozzle to discharge said pressurized aqueous foaming solution comprising an eductor nozzle oriented adjacent one or more eductor air inlet means, said eductor nozzle oriented upstream of an eductor inlet which converges in a downstream direction to an eductor throat which thereafter diverges in a downstream direction toward an eductor outlet whereby a flow of pressurized aqueous foaming solution through said eductor nozzle into said eductor inlet in a downstream direction draws air in through said air inlet means into said pressurized foaming solution flowing through said eductor;(c) a relatively constant cross section foam generating manifold extending from said eductor outlet to a diverging foam outlet nozzle;(d) agitator means in said foam generating manifold to agitate the flowing foaming solution and air entrained therein into a high quality foam having an expansion ratio greater than about 10 and a foam half life greater than about three minutes.