KOCHETOV'S VORTEX-TYPE FOAM GENERATOR Russian patent published in 2011 - IPC A62C31/12 F04F5/04 

FIELD: process engineering.

SUBSTANCE: invention relates to fluid and solution sprayers. Foam generator comprises housing with swirling chamber and nozzle. Housing is made up of union with fluid feed channel and air feed channel, and cylindrical coaxial sleeve. Nozzle making radial-flow first-stage swirler with three tangential inlet cylindrical bores is jointed to housing bottom. Vortex taper chamber with screw grooves on its inner surface is arranged above said swirler, chamber surface making second stage of fluid swirler. Note here that radial-flow swirler is communicated, via chamber communicated with throttle, with taper vortex chamber bottom. Note also that taper chamber top section has at least three tangential; cylindrical inlet bores arranged tangentially to its inner surface. Fluid is fed to said inlets via three cylindrical bores communicated with tangential inlets at right angle. Axes of said bores are parallel to nozzle axis. Besides said bores communicate with cylindrical chamber arranged above aforesaid cover perpendicular to its axis. Besides, fair representing truncated cone with central opening is arranged above cylindrical chamber to communicate with both cylindrical chamber and housing inlet to feed fluid from main line. Taper-ring-like clearance is arranged between side taper surface of fair and housing inner taper surface. Note here that radial-flow swirler is fitted in housing to form annular cylindrical chamber to feed fluid to tangential inlets of radial-flow swirler with its cylindrical chamber communicated with nozzle outlet taper chamber. Spreader made up of perforated cylindrical shell with perforated bottom is arranged on nozzle case, opposite taper chamber.

EFFECT: higher efficiency of fire extinguishing.

1 dwg.