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

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to fire-fighting equipment, namely, to structures of foam generators, and can be used in subsurface fire suppression systems in reservoirs with highly inflammable liquids (HIL). In the foam generator comprising a cylindrical housing with a nozzle for supplying water foamer solution, and a fitting for air supply, the housing is made in the form of a sleeve, inside of which and coaxially to it the fitting for air supply is located, and the inner surface of the sleeve and the outer surface of the fitting form an annular channel for supply the foamer solution, and the cylindrical tube with external thread is rigidly coaxially connected to the sleeve, while the nozzle through the tube with internal thread is connected coaxially to the housing, which is made in the form of a centrifugal flow swirler of the solution in the form of a dead-end cylindrical insert with at least three tangential inlets in the form of cylindrical holes, and the tube is a part of the nozzle and is mounted coaxially and in alignment with respect to centrifugal swirler, and in the end surface of the centrifugal swirler the series-connected axial conical and cylindrical orifices coaxial with each other and the housing are made, which are connected to the fitting to supply the foamer solution, and the centrifugal swirler is mounted in the cylindrical chamber of the housing to form an annular cylindrical chamber to supply the foamer solution to the tangential inlets of the centrifugal swirler and is connected with three chambers mounted sequentially and coaxially to it with conical, cylindrical diffuser outlet chamber, and the chambers are mounted so that the output of one chamber is the input for another, and in the coaxial diffuser output chamber the divider is fixed, which is made in the form of a cylindrical perforated shell with a perforated bottom set in front of the diffuser outlet chamber.

EFFECT: increased efficiency of foam generator that produces high-expansion foam.

1 dwg