The invention includes an air mover device used for fire mitigation and protection. The core component is an air mover unit whose discharge airstream can be positioned using air rudders and/or a directional control assembly to provide air flows in optimum directions and capacity to counter unwanted fire progression or to promote fires in cases of back-burns. Additional support components include a power supply, its fuel source, a speed control mechanism for the air mover, an air mover inlet protective screen, a sparger unit to impart suppressant or retardant into the airstream, balancing feet, a removable nozzle, and instrumentation and controls to ensure function and safety of equipment and personnel. This device can be on a static or mobile platform, towed or self-propelled and can be locally or remotely controlled.

There is described a fire-fighting apparatus comprising a housing comprising an upstream air inlet and a downstream fire-extinguishing stream outlet and a hollow body therebetween, wherein the housing houses an air stream traveling at high velocity; and a spray assembly concentrically mounted to the housing. The spray assembly comprises a fluid inlet connected to a source of fluid outside the housing; and a plurality of injecting assemblies fluidly connected to the fluid inlet and designed for breaking down an inflow of the fluid into droplets and projecting the droplets of the fluid within the air stream in a multiphase fire-extinguishing stream. The injecting assemblies each comprises a fluid outlet; a base plate through which extends the fluid outlet; a holding structure mounted to the base plate and extending downstream therefrom, and a unibody jet-fragmenting device mounted to the holding structure facing the stream of fluid exiting the fluid outlet.

Implementations are disclosed herein that relate to a firefighting system. An example provides a firefighting system comprising a conveyance configured to receive and elevate screened soil, a chute configured to receive the screened soil at an entry point, and a nozzle configured to emit the screened soil toward a fire site, the nozzle comprising an augmentation device configured to increase a flow speed of the screened soil.

A fluid projecting platform comprising: a vehicle; a primary fluid projectile vessel configured to store a primary fluid projectile; a secondar fluid projectile vessel configured to store a secondary fluid; a tertiary fluid projectile vessel configured to store a tertiary fluid projectile; a first nozzle; a second nozzle; a first pump fluidically transmitting the primary fluid projectile to the first nozzle; a second pump fluidically transmitting the secondary fluid projectile to the first nozzle; a third pump fluidically transmitting the tertiary fluid projectile to the second nozzle; an air compressor providing compressed air to the second nozzle; a jet engine emitting a jet-stream of a gas in a direction non-coincident with an output of the first nozzle; a gimbal arm having a first end coupled to the vehicle, and having a second end couple to the jet engine.

A fire ventilation system. The fire ventilation system includes a frame having an open central area. The frame can removably secure within an opening of a building, such as a door or window. A flange extends away from the frame along an inner perimeter thereof. A tube having an inlet thereon, extends along an outer perimeter of the frame. A gap is disposed through the tube, wherein the gap can expel fluid received through the inlet therethrough, such that the gap expels the fluid towards the flange.

A system adapted for installation on a parcel of property and configured for proactively protecting combustible property surfaces against fire ignition and flame spread by forming environmentally-clean thin potassium salt crystalline coatings on the combustible property surfaces prior to the arrival of wildfire. The system includes: a storage tank containing a supply of environmentally-clean fire inhibiting liquid biochemical composition, available for spray application on and over the combustible surfaces of the parcel of property in response to a trigger signal generated before the arrival of a wildfire at the parcel of property, so as to form thin potassium salt crystalline coatings on the combustible surfaces that inhibit fire ignition and flame spread in the presence of fire. The environmentally-clean fire inhibiting liquid biochemical composition includes: a dispersing agent realized in the form of a quantity of water, for dispersing potassium ions dissolved in the water; a fire inhibiting agent realized in the form of potassium citrate, for providing potassium ions dispersed in the water when said potassium citrate is dissolved in the water; and a coalescing agent realized in the form of triethyl citrate, an ester of citric acid, for dispersing and coalescing the potassium ions when the fire inhibiting liquid composition is applied to the combustible surfaces to be protected against fire ignition and flame spread, and while water molecules in the water evaporate during drying, the potassium ions cooperate to form the environmentally-clean thin potassium salt crystalline coatings on the combustible surfaces that proactively protects the combustible surfaces against fire ignition and flame spread, in the presence of fire. Spraying apparatus is arranged in fluid communication with the storage tank, and is responsive to the generation of the trigger signal, for automated spraying of the supply of environmentally-clean fire inhibiting liquid biochemical composition, on and over the combustible surfaces of the parcel of property before the arrival of a wildfire at the parcel of property, so as to form the environmentally-clean thin potassium salt crystalline coatings on the combustible surfaces that inhibit fire ignition and flame spread in the presence of wildfire.

The invention includes an air mover device used for fire mitigation and protection. The core component is an air mover unit whose discharge airstream can be positioned using air rudders and/or a directional control assembly to provide air flows in optimum directions and capacity to counter unwanted fire progression or to promote fires in cases of back-burns. Additional support components include a power supply, its fuel source, a speed control mechanism for the air mover, an air mover inlet protective screen, a sparger unit to impart suppressant or retardant into the airstream, balancing feet, a removable nozzle, and instrumentation and controls to ensure function and safety of equipment and personnel. This device can be on a static or mobile platform, towed or self-propelled and can be locally or remotely controlled.

A wildfire defense system trailer and method of installing an automated sprinkler-based wildfire defense system on a home construction site before the starting of the construction phase of a home building project in a wildfire urban interface (WUI) region. The first commissioned automated sprinkler-based wildfire defense system will continue in operation all during the home building construction phase, and will only be decommissioned from operation, and removed from the premises (including the job-site wildfire defense system trailer being removed from the property) when construction of the wood home building project is totally completed, and the wood home building is ready for occupation. At the same time when the first system is decommissioned, a second permanently-installed automated sprinkler-based wildfire defense system will be completely installed within the new home construction, independent from the first system, and ready for commissioning to provide a new proactive measure of defense against a wildfire storm occurring after home building construction has been completed, thereby protecting all wood and combustible surfaces on the home and surrounding property, and preventing fire ignition and flame spread until the wildfire storm passes through the WUI region. By virtue of the present invention, it is now possible to significantly reduce the risk of wood home building construction projects occurring within a wildfire urban interface (WUI) region, and better support the underwriting of home construction and ownership insurance policies within such regions.

A spray jet discharging device of long range, whose function is based on the production of a powerful air stream with liquid droplets dispersed therein, the maximum velocity of the spray jet being at least 300 km/h. The air stream is produced by a centrifugal fan with a spiral housing (1). The device is mainly used for fire extinguishing. It may be mounted at fixed points or on land vehicles via a suitable support for the fan, which enables both rotation of the spray jet beam in the horizontal plane, and changing of its inclination angle in the vertical plane. It may be remotely controlled (10) or manually operated (60). There is also a version of the device for aerial fire-fighting operations (90), configured to be suspended from an aircraft, e.g. a helicopter, and a device for portable use (1 10), which can be carried by a fireman.

The invention relates to a fan unit (1) for mobile use for ventilating an area in which it is deployed, in particular for circulating fresh air in areas contaminated by smoke or gases, which comprises a main frame (2), having a lifting frame (4) mounted thereon and an axial fan (3). A first pivot arrangement (8) for the lifting frame (4) is disposed on the one hand in the region of a frame part (7) extending up from a base frame (6) and on the other hand in a first end region (14) of the lifting frame (4) facing the frame part (7). The lifting frame (4) can be adjusted in terms of its vertical distance from the base frame (6) from a non-operating position lying closer thereto into a raised deployment position. A second pivot arrangement (17) is disposed on the lifting frame (4) about which a support frame (19) is mounted so as to be pivotable in terms of its relative position with respect to the base frame (6). The axial fan (3) is retained on the lifting frame (4) with the support frame (19) connected in between.