HIGH-EXPANSION FOAM GENERATOR FOR FIRE FIGHTING Russian patent published in 2015 - IPC A62C5/02 

FIELD: fire safety.

SUBSTANCE: high-expansion foam generator for fire fighting contains connected in series and located coaxially relative common axis ambient air intake, first mixing chamber, separator, ring distribution chamber for gaseous foaming component, second mixing chamber, and output branch pipe with foaming mesh element. In side wall of the first mixing chamber a hole is made for compressed gas or gas mixture supply in it. In output zone of the first mixing chamber and coaxially with it the fairing is installed in form of the rotation body. The ring distribution chamber for the gaseous foaming component contains enclosure connected with separator partition, and coaxially located relatively it internal wall. On the internal wall of the ring distribution chamber longitudinal slotted holes are made, they are uniformly located over its circle and tangentially relatively it, and on the cylindrical side wall of the second mixing chamber projecting beyond the enclosure of the ring distribution chamber for the gaseous foaming component the branch pipe for the liquid foaming component supply under pressure is installed. Each specified branch pipe is located tangentially to the cylindrical side wall of the second mixing chamber, and its direction coincides with direction of the longitudinal slotted holes made on the internal wall of the ring distribution chamber for the gaseous foaming component.

EFFECT: increased operation reliability of the high-expansion foam generator for fire fighting due to prevention of the blocking of the foaming mesh element by the dispersion particle generated during products combustion.

4 cl, 7 dwg