FIRE-EXTINGUISHING MODULE (VARIANTS) Russian patent published in 2006 - IPC A62C35/00 B01J7/00 

FIELD: fire-fighting equipment, particularly used in powder fire extinguishers, adapted to suppress fire and having different areas and volumes.

SUBSTANCE: impulse or short-term fire extinguishing module has working gas source, for instance charge of condensed agent of solid-fuel gas generator. The modules are made as main executive mechanisms for automatic and autonomous fire-suppression systems. In accordance with the first embodiment module has streamlined body. Gas generator is made as replaceable cold gas source. The module has modified gas-and-powder mixture movement path, which defines gas-and-powder mixture flow due to partial arrangement of mixture flow defining member inside module bottom neck and partial above member location inside module body. The mixture flow defining member is made as hollow cylindrical nozzle having tangential orifices in upper part of side surface thereof and central through orifice made in nozzle end having lesser diameter. The module has membrane arranged so that the membrane provides additional nozzle interior protection against external unauthorized action. The module has aerator, which is installed more efficiently with respect to body bottom neck, and figured washer. Gas-and-powder mixture flow distribution is defined by relationship between side and central nozzle orifices. In accordance with the second embodiment powder is distributed in vertical direction. Space to be protected has reduced size and powder mass to be displaced is also decreased in comparison with the module formed in accordance with the first embodiment. That is why summary outlet tangential orifice area is enough to provide pulsed gas-and-powder mixture throwing during module operation. The invention eliminates the need of powder aeration gas delivering over desirable distance in horizontal direction. Downward gas flow impinges upon solid nozzle end and passes over nozzle sides to upper module body part for powder fluidization. Solid nozzle ends protects central powder part against compaction due to gas flow action. Gas-and-powder mixture jet effluxes in the same way as in the module formed in accordance first embodiment, namely in the form of highly-turbulized jet.

EFFECT: increased fire suppression efficiency without structure complication due to provision of effective gas-and-powder mixture movement, as well as increased density and uniformity of gas-and-powder mixture spray as a result of minimized module action time, prevention of powder compaction at the beginning of gas generator actuation, improved operational convenience and fire and explosion safety while using the module.

13 cl, 5 dwg