DEVICE OF GAS FIRE-EXTINGUISHING Russian patent published in 2012 - IPC A62C35/00 

FIELD: fire-fighting equipment.

SUBSTANCE: invention relates to low-temperature solid-fuel devices, which generate inert gas mixture and can be used as independent device of gas fire-extinguishing in closed spaces. Device of gas fire-extinguishing contains igniter 9, charge 3 and filter-cooler 12. Charge 3 is made from aside-free gas-generating composition based on potassium nitrate and ammonium nitrate mixture with central blind canal. In canal 8 specified amount of igniting composition is placed. Igniter 9 and charge 3 are placed in case 2 with hermatically connected to it cover 5, which is fixed in butt of device case 1. Filter-cooler 12 is made from sodium bicarbonate. Charge 3 is made in form of monoblock or, at least, two cartridges. Charge case 2 is provided with holes, located in rows on its side surface in even manner and overlapped with opening elements 4. Device is equipped with filter-separator 14, which is separated from filter-cooler by metal mesh 13. Filter-separator 14 is made from corrugated filter paper, rolled up into cylinder, whose inner and outer side surfaces are provided with metal meshes 17, butts are provided with upper blind 18 and lower with central hole 19 metal covers. Mesh 17 is glued over with gas-permeable fabric 20 on outer side surface. After filter-separator 14 installed is disc 21, made in central part with thinning or with hole, overlapped by opening element 22. Disc 21 is tightened by means of washer 23 with screwed cap 24 to neck 25 of device case 1 bottom.

EFFECT: increase of device efficiency.

4 cl, 1 dwg