FIRE PREVENTION DEVICE OF NOZZLE TYPE Russian patent published in 2013 - IPC A62C3/04 

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to a fire prevention device of nozzle type which comprises a housing formed of a base and a cover, between which there is a fire prevention element of cassette type, characterised in the fact that the base and the cover are interconnected through at least three fastening elements, and the cover with the base are made in the form of support flanges connected to a truncated cones expanding to the place of their connection, and the fire prevention element is located in the fixing grid made in the form of mutually perpendicular rods located in the upper part of the base, parallel to the support flanges, and is attached to the base and the cover by means of two elastic tapes which are tightened by means of fastening elements, and the fire prevention cassette is made of a package consisting of parallel grids on which there is a nozzle of glass or porcelain balls, gravel, corundum or other bulk granular materials, the Rachig rings can be used as a nozzle.

EFFECT: providing fire suppression.