VORTEX FOAM GENERATOR OF KOCHETOV Russian patent published in 2013 - IPC A62C31/12 F04F5/04 

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to means of cutting fluids, solutions. In the vortex foam generator, comprising a housing with the vortex chamber and a nozzle, the housing is made in the form of a fitting with a pipe for fluid supply and an air supply duct, and a cylindrical coaxial tube rigidly connected thereto, and coaxially to the housing, in its lower part, a nozzle 5 is connected which is made in the form of a first-stage centrifugal swirler in the form of a cylindrical cavity with at least three tangential inlets in the form of cylindrical openings, and over the first-stage centrifugal swirler a vortex conical chamber is mounted with a screw thread on its inner surface, which is the second stage of the fluid swirler, and the centrifugal swirler through the cavity, which is connected to the central orifice, is connected to the vortex conical chamber in its lower part, and in the upper part the conical chamber has at least three tangential inlets in the form of cylindrical openings tangentially located to its inner surface, and the supply of the working body to the tangential inlets is carried out by at least three cylindrical openings connected with tangential inlets at right angles, and which axes are parallel to the axis of the nozzle, and these openings are connected to the cylindrical chamber located above the cover of the conical chamber, perpendicular to its axis, and over the cylindrical chamber there is a cowling made in the form of a truncated cone with a central opening, connected simultaneously to the cylindrical chamber and the housing opening for supplying fluid from the main pipe, and between the lateral conical surface of the cowling and the inner conical surface of the housing in the place of its connection with the tube there is a gap in the form of a conical ring, and the centrifugal swirler is mounted in the housing to form a circular cylindrical chamber for supplying fluid to the tangential inlets of the centrifugal swirler, which cylindrical cavity is connected to the outlet conical chamber of the nozzle, and on the nozzle housing, coaxially to the conical chamber, a divider is fixed, made in the form of a cylindrical perforated shell with a perforated bottom mounted opposite the conical chamber, and on the nozzle housing, coaxial to the conical chamber, a divider is fixed, made in the form of a diffuser with a pack of perforated plates mounted in front of the conical chamber.

EFFECT: increased efficiency of fire fighting by increasing the spray cone and finely divided atomised fluid, as well as formation of high-expansion air filled foam.

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