Fire extinguishing device for in-air use
View Patent ↗A fire-extinguisher device, for aerial use, comprising a bucket which contains two independent but related tanks or cylinders, one for water and one for a foaming agent mixture, along with a chamber in which the extinguishing foam is generated. The device is also equipped with an electronic mechanism to control operation thereof, as well as mechanism for the dispensing of the extinguishing foam that is produced, and which will allow for rapid dropping or spreading over an extended area, as well as providing various discretionary dispensing services.
1. A fire-extinguisher device for aerial use, the fire-extinguisher device containing an extinguishing agent made of foam concentrate and water, or water and a fire retardant, or water, and the fire-extinguisher device which facilitates dispersal of the extinguishing agent from the fire-extinguisher device,
wherein the fire-extinguisher device comprises:
a cylindrical body ( 6 ) and an interior cylinder ( 4 ),
the interior cylinder ( 4 ) is open at a top and a bottom thereof,
a water tank ( 11 ) that is formed within the fire-extinguisher device ( 1 ) between cylindrical body ( 6 ) and the interior cylinder ( 4 ),
the water tank ( 11 ) that is accessible through the top of the interior cylinder ( 4 ) to facilitate filling of the water tank ( 11 ), and an internal space of the interior cylinder ( 4 ) acts as an expansion chamber ( 12 ), during dispensing of the extinguishing agent, and as a water inlet when refilling the water tank ( 11 ) by immersion; and
at least one agitation nozzle ( 14 ) that dispenses the extinguishing agent, under pressure supplied by a pump ( 18 ), into the expansion chamber ( 12 ) for dispersal of the extinguishing agent through an outlet of the fire-extinguisher device.
2. The fire-extinguisher device for aerial use according to claim 1 , wherein a bottom ( 10 ) of the expansion chamber ( 12 ) of the fire-extinguisher device is equipped with an aerator screen ( 9 ).
3. The fire-extinguisher device for aerial use according to claim 2 , wherein the aerator screen ( 9 ) comprises a stretched mesh structure.
4. The fire-extinguisher device for aerial use according to claim 1 , wherein the agitation nozzles use injectors ( 15 ) which facilitate production of the extinguishing agent.
5. The fire-extinguisher device for aerial use according to claim 1 , wherein the fire-extinguisher device ( 1 ) further includes a supporting stand ( 2 ) for supporting the fire-extinguisher device ( 1 ).
6. The fire-extinguisher device for aerial use according to claim 1 , wherein a motor module ( 7 ) is supported adjacent a top of the fire-extinguisher device ( 1 ).
7. The fire-extinguisher device for aerial use according to claim 1 , wherein the fire-extinguisher device ( 1 ) is equipped with a floating element ( 3 ) which is designed to provide floatation for the fire-extinguisher device ( 1 ) and prevent immersion of a motor module ( 7 ), of the fire-extinguisher device, when lowered into water.
8. The fire-extinguisher device for aerial use according to claim 1 , wherein one technique to fill the fire-extinguisher device with water comprises one or more ducts which transfer water drawn by at least one delivery pump ( 18 ), which is/are driven by a motor unit ( 17 ), to fill the water tank ( 11 ), under control of valves ( 19 and 20 ).
9. The fire-extinguisher device for aerial use according to claim 1 , wherein a foaming concentrate tank, which accommodates a foam concentrate, is located adjacent a lower part of the fire-extinguisher device ( 1 ).
10. The fire-extinguisher device for aerial use according to claim 1 , wherein a foam concentrate tank, which accommodates a foam concentrate, is in a tank attached to a helicopter.
11. The fire-extinguisher device for aerial use according to claim 1 , wherein means for controlling dispersal of the extinguishing agent comprises regulating a flow selector for adjusting an input to a pump ( 18 ) which disperses the extinguishing agent at a given pressure and rate of flow.
12. The fire-extinguisher device for aerial use according to claim 1 , wherein said fire-extinguisher device ( 1 ) is carried by a sling ( 22 ), and the sling ( 22 ) has a length that is suitable for allowing the pilot to have a view of the fire-extinguisher device ( 1 ) during use thereof.
13. The fire-extinguisher device for aerial use according to claim 1 , wherein a diameter of the cylinder ( 6 ) gradually narrows towards a bottom ( 8 ) of the fire-extinguisher device ( 1 ).