DEVICE FOR GENERATION OF THE STREAM OF THE FIRE EXTINGUISHING SUBSTANCE Russian patent published in 2006 - IPC A62C31/12 B05B1/34 

FIELD: fire extinguishing; production of the stationary and portable fire extinguishing installations.

SUBSTANCE: the invention is pertaining to the field of fire extinguishing, in particular, to the stationary and portable fire extinguishing installations, in which in the capacity of fire extinguishing substance the water with addition of the foam former is used. The device for generation of the stream of the fire extinguishing substance contains: the axisymmetrical form barrel with the water running channel, the branch pipe for water delivery into the water running channel of the barrel, the nozzle mounted on the butt part of the barrel. The water running channel of the nozzle consists of the narrowing in the direction of the stream running inlet part of the conical or conoid form and the outlet part of the cylindrical form. The installation composition includes the tool for injection of the solution of the foam maker mounted in the barrel water running channel, the stabilizer of the mixed stream of liquid and the foam maker. The stabilizer is mounted in the barrel water running channel between the foam maker injection tool and the nozzle inlet. In the water running channel of the barrel between the tool of injection of the foam maker solution and the stabilizer of the mixed stream there is the expansion chamber. The maximal diameter_{dmax and the minimum diameterdmin of the inlet section of the nozzle water running channel as well as the length lc of the outlet section of the nozzle water running channel are selected from the following conditions for provision of the intensive foam making in the accelerated stream of the liquid: 2≤dmax/dmin ≤14; ddmin=Dk;dmin = dc; lc =(2-10)dc ,where Dk - the diameter of the expansion chamber of the water running channel of the barrel; dc- the diameter of the outlet section of the nozzle water running channel. The tool of injection of the foam maker solution into the barrel water running channel can be made in the form of the central body with the outlet channel oriented towards to the direction of liquid stream running. The installation may have a movable in respect to the barrel block of the liquid atomizers with the branch pipe of the liquid feeding. In the other version of realization the installation may, at least, one guiding component mounted in the expansion chamber. established in an expansion chamber. Utilization of the installation ensures creation of the high-speed stream of the foamy fire extinguishing substance having the heightened range.}

EFFECT: the invention ensures, that the installation is capable to form the high-speed stream of the foamy fire extinguishing substance having the heightened range.

9 cl, 4 dwg