Operating principle
History
Ari-Jukka Kalliomäki, the developer of the AJ-FFP fire extinguisher, has been a professional firefighter since 1983.
In my career, I have come across objects that were challenging to extinguish using traditional methods, or the extinguishing otherwise did not proceed as desired.
So, something had to be done! A different tool was needed to reach the spots that cannot be reached by using a traditional firehose spray – the tool that is able to create a fast and effective cloudy mist to extinguish the entire area.
At the same, occupational safety dramatically increases when the extinguishing can be carried out safely from the outside the burning building without dangerous smoke diving.
REVOLUTIONARY NOZZLE
Over the years at least fifty different prototypes were tested before the revolutionary FFP nozzle was finally developed. We ended up with a nozzle where the droplet size of the water mist varies. Larger droplets wet surfaces and vaporize on hot surfaces. Smaller, almost mist-like water droplets create a large contact surface with hot combustion gases, allowing for maximum vaporization and vapor suppression effect. The nozzle is made of 3D printed tool steel. It has a hard metal pin at its tip to facilitate the penetration of windows.
Water mist containing haze
Haze is a water mist that has a remarkable large contact surface in proportion to the amount of water, but its weakness is poor progress. Air currents carry the fog with them, and by turning off the outside, there has been no opportunity to direct such a small drop of water mist inside the object. Now we have a device with which the small droplet can be taken inside the object and its power can be utilized by using the pressure of ordinary fire pumps.
The FFP extinguishing rod produces water at a pressure of 8 bar at 320 liters per minute.
Future
Here's a recipe that renews extinguishing.
The product is made by firefighters for firefighters, with the basic idea: keep it simple