A fire suppression apparatus for fighting fires from a vehicle configured for flight is disclosed, comprising a foam and water held in separate containers aboard the vehicle that when mixed forms a fire retardant, a pump driven by an electric motor to pressurize the fire retardant, the pump including an air induction valve where air is drawn into a suction end of the pump and pressurized together with the fire retardant, and an aimable boom connected to the pump by a conduit, the boom including a nozzle on a distal end of the boom from which the pressurized fire retardant and air is dispensed toward a target.

Apparatus for extinguishing fires installable on heavy goods industrial vehicles, in particular trucks, comprising a device for the formation of extinguishing liquid, at least two hose reel for the delivering of said extinguishing liquid, each placed in a case provided with means for the activation of said device, characterized in that the device for the formation of the extinguishing liquid is a compact, modular, standardizable device equipped with: at least one substantially toroidal-shaped tank containing a solution of water and foaming agent and delimiting a compartment, at least one pressurization box containing pressurization means, at least one mixing chamber in which a solution composed by water and foaming agent coming from the tank and nitrogen/air coming from the pressurization box is formed,
said compartment being bounded by the tank which hosts at least one pressurization box containing said pressurization means and at least one mixing chamber and said components being operatively interconnected by connecting means between the pressurization box and the mixing chamber, connecting means between the mixing chamber and the tank and connecting means between the mixing chamber and at least two hose reel.

A foaming unit for producing foam from a mixture of gas and liquid. The foaming unit comprising a housing, a slide, a foaming element, an inlet for the mixture of gas and liquid and an outlet, the slide and the housing being movable relative to each other, the foaming element being arranged hydraulically between the inlet and the outlet, wherein an active volume of the foaming element can be adjusted by changing the relative position of a control edge and an end face of the foaming element.

A helipad fire suppression system includes a helipad having an outer boundary that defines an impervious deck area for at least one of landing or storing one or more helicopters, with at least a portion of the impervious deck area being designated a fire suppression target area. The system includes a nozzle assembly having a spray-type nozzle for spraying a fire suppression fluid in a radial pattern. The nozzle assembly can include a nozzle enclosure for enclosing the spray-type nozzle and can be configured for installation in a surface made of an impervious material. The nozzle assembly is disposed in an interior portion of the impervious deck area so as to provide the fire suppression fluid to the fire suppression target area.

A compressed air foam (CAF) mixing device is suitable for use in a CAF system which includes a pressurized source of a water soap mixture and a pressurized air source. The CAF mixing device includes an inlet portion, a venturi portion and a deceleration portion. The venturi portion communicates with the inlet portion and includes a constricted zone which presents a smaller cross sectional area than the inlet portion. The venturi portion opens into the deceleration portion which has a substantially larger cross sectional area than the venturi portion. At least one pressurized air conduit communicates with the pressurized air source and is arranged to be adjacent to the deceleration portion. At least one aperture which communicates between the pressurized air conduit and the deceleration portion introduces high pressure air into the deceleration portion in order to produce a water soap foam (CAF) suitable for firefighting.

The present invention relates to the technical field of mine fire prevention and extinguishing, in particular to a liquid nitrogen direct injection and low-temperature foaming intelligent filling system based on mine fire area characteristics and an application method, comprising a liquid nitrogen storage tank, a liquid nitrogen direct injection system and a low-temperature foaming system, wherein the liquid nitrogen storage tank communicates with a liquid nitrogen pressurizing device through a main pipeline; a temperature control unit is arranged on the main pipeline; and the liquid nitrogen pressurizing device is connected with the liquid nitrogen direct injection system and the low-temperature foaming system, respectively, liquid nitrogen is directly injected into a foam liquid, to prepare a low-temperature foam type fire preventing and extinguishing material by means of forced convection, membrane boiling, explosion boiling and nucleate boiling between the liquid nitrogen and water.

Firefighting devices and associated methods and systems for firefighting are described where the firefighting devices generally have a housing: at least one tank disposed in the housing and containing source material for a firefighting agent: a propellant system that is contained within the housing and operatively coupled to the at least one tank for deployment of the firefighting agent: a nozzle that is coupled to the propellant system for receiving and dispensing the firefighting agent: and a control unit that is coupled to the propellant system configured to autonomously control the firefighting device by activating the propellant system to discharge the firefighting agent through the nozzle to a portion of an operational region of the firefighting device based on analysis of sensor data obtained for a portion of the operational region or an adjacent area outside of the operational region or receipt of a signal from another device.

Rock dust is applied to a mine wall for mine fire suppression in combination with a chemical foam, by generating the foam from air and a foamable liquid in a mixing chamber, and delivering the foam through one flexible conduit and air-entrained rock dust through another flexible conduit to a portable assembly composed of a Y-joint and a delivery nozzle for combining the foam and rock dust and applying the combination directly to a mine wall.

A fire suppression apparatus for fighting fires from a vehicle configured for flight is disclosed, comprising a foam and water held in separate containers aboard the vehicle that when mixed forms a fire retardant, a pump driven by an electric motor to pressurize the fire retardant, the pump including an air induction valve where air is drawn into a suction end of the pump and pressurized together with the fire retardant, and an aimable boom connected to the pump by a conduit, the boom including a nozzle on a distal end of the boom from which the pressurized fire retardant and air is dispensed toward a target.

The application relates to a method for producing compressed air foam for fire-fighting, wherein the method comprises the following steps: supplying a mixture of water and foaming agent via a supply line (12; 22) in a mixing chamber (11; 21) of a foaming line (10; 20), wherein a regulating device (14; 24) is disposed in the supply line (12; 22), by means of which a volume flow of the mixture can be regulated, suppling compressed air via a compressed air line (13; 23) in the mixing chamber (11; 21), wherein a further regulating device (15; 25) is disposed in the compressed air line (13; 23) by means of which a volume flow of the compressed air can be regulated, producing compressed air foam in the mixing chamber (11; 21) by foaming the mixture of water and foaming agent in the mixing chamber (11; 21) by means of the compressed air and discharging the compressed air foam from the foaming line (10; 20) via a mixing pressure regulator (17; 27) which regulates a mixing pressure in the mixing chamber (11; 21) into a delivery line (30; 40), wherein a pressure measuring device (31; 41) is disposed in the delivery line (30; 40), which records a pressure in the delivery line (30; 40) and which, like the regulating device (14; 24) and the further regulating device (15; 25), couples to the control device (26), and wherein the volume flow of the mixture of water and foaming agent and/or the volume flow of the compressed air is regulated by means of the control device (26) depending on the recorded pressure in the delivery line (30; 40). The application further relates to an apparatus for producing compressed air foam for fire-fighting.