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WO2024231842A1 - Extincteur d'incendie à agent propre avec orifice de mélange - Google Patents

Extincteur d'incendie à agent propre avec orifice de mélange Download PDF

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Publication number
WO2024231842A1
WO2024231842A1 PCT/IB2024/054454 IB2024054454W WO2024231842A1 WO 2024231842 A1 WO2024231842 A1 WO 2024231842A1 IB 2024054454 W IB2024054454 W IB 2024054454W WO 2024231842 A1 WO2024231842 A1 WO 2024231842A1
Authority
WO
WIPO (PCT)
Prior art keywords
suppressant agent
fire suppressant
fire
suppression device
compressed gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/IB2024/054454
Other languages
English (en)
Inventor
Adam MICHAUD
Todd Robert AERTS
JoAnna Marie MONFILS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tyco Fire Products LP
Original Assignee
Tyco Fire Products LP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyco Fire Products LP filed Critical Tyco Fire Products LP
Publication of WO2024231842A1 publication Critical patent/WO2024231842A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/62—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container
    • A62C13/64—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container the extinguishing material being released by means of a valve
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/66—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/002—Apparatus for mixing extinguishants with water
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water

Definitions

  • the present disclosure relates generally to fire suppression systems. More specifically, the present disclosure relates to systems and methods for using a fire extinguisher having a mixing orifice to discharge clean agent(s) in a fire suppression system.
  • Fire suppression systems include tanks storing a fire suppressant agent. Once activated, fire suppression systems spread a fire suppression agent throughout an area. The fire suppressant agent then extinguishes or controls the fire.
  • the fire suppression device can include one or more tanks to store a fire suppressant agent and a compressed gas.
  • the fire suppression device can include a valve coupled with the tank.
  • the fire suppression device can include a tube disposed in the tank. The tube can have a first end in contact with the fire suppressant agent and a second end in contact with the compressed gas.
  • the fire suppression device can include an orifice coupled with the tube. The orifice can be positioned to allow for mixing of the compressed gas with the fire suppressant agent, responsive to the valve opening, to release the fire suppressant agent from the tank as an atomized fire suppressant agent.
  • At least one implementation relates to a fire suppression device.
  • the fire suppression device includes a tank configured to store a fire suppressant agent and a compressed gas, a valve operatively coupled to the tank configured to open and release the fire suppressant agent, and a syphon tube disposed in the tank and fluidly coupled to the valve.
  • the syphon tube includes an inlet aperture, an outlet aperture, a first flow passage extending between the inlet aperture and the outlet aperture in fluid communication with the fire suppressant agent; at least one mixing orifice extending through a wall of the syphon tube downstream of the inlet aperture, and a second flow passage defined by the at least one mixing orifice in fluid communication with the compressed gas.
  • the fire suppression device includes a nozzle that can discharge the fire suppressant agent, and a conduit coupled with the valve, the conduit that can convey the atomized fire suppressant agent to the nozzle.
  • the fire suppression device includes an actuator operatively coupled to the valve and configured to open and close the valve.
  • the fire suppressant agent of the fire suppression device is FK-5-1-12.
  • the mixing orifice can include a plurality of mixing orifices.
  • the mixing orifice can be offset from an upper surface of the fire suppressant agent by a distance.
  • the compressed gas is held in an internal gas cartridge coupled with the valve, such that the compressed gas is released from the gas cartridge into the tank when the valve is open.
  • the compressed gas is held in an external gas cartridge coupled with the valve.
  • a portable fire suppression device including a tank defining an internal volume configured to be partially filled with fire suppressant agent and a headspace above the fire suppressant agent filled with compressed gas, a handle configured to trigger the release of the fire suppressant agent from the tank, and a syphon tube disposed in the tank.
  • the syphon tube can release the fire suppressant agent, wherein the fire suppressant agent flows through the syphon tube.
  • At least one mixing orifice extends through a wall of the syphon tube and is disposed in the headspace, allowing the compressed gas to be sucked into the syphon tube when the fire suppressant agent flows through the syphon tube, forming a mixture within the syphon tube.
  • the mixing orifice is substantially circular. In some implementations, a mesh layer is disposed over the mixing orifice. In some implementations, the at least one mixing orifice is a plurality of mixing orifices.
  • the syphon tube has a constant diameter along a length of the syphon tube.
  • the syphon tube can include a top side and a bottom side and wherein the bottom side defines an aperture through which the fire suppressant agent enters the syphon tube.
  • the aperture can extend towards the top side of the syphon tube on a portion of the syphon tube.
  • Another implementation relates to a method for atomizing a fire suppressant agent including the steps of receiving, by a first end of a conduit, a fire suppressant agent. A compressed gas is then received by at least one aperture extending through a wall of the conduit. The fire suppressant agent and the compressed gas are combined within the conduit. Then, the fire suppressant agent is atomized to generate an atomized fire suppressant agent. The method further includes discharging, by a second end of the conduit opposite the first end, the atomized fire suppressant agent.
  • the fire suppressant agent is a clean fire suppressant agent, FK-5-1-12, or a pressurized liquid.
  • FIG. l is a schematic view of a fire suppression device, according to one implementation.
  • FIG. 2 is an external side view of the fire suppression device of FIG. 1, according to one implementation.
  • FIG. 3 is a sectional side view of the fire suppression device of FIG. 1, according to one implementation.
  • FIG. 4 is a side view of a fire suppression device, according to one implementation.
  • FIG. 5 is a sectional side view of an internal cartridge operated fire suppression device, according to one implementation.
  • FIG. 6 is a sectional side view of an external cartridge operated fire suppression device, according to one implementation.
  • FIG. 7 is a side view of a syphon tube, according to one implementation.
  • FIG. 8 is a flow chart of a method of atomizing a fire suppressant agent, according to one implementation.
  • Water is commonly used in fire suppression systems that suppress fires in different types of areas (e.g., office buildings, homes, schools, etc.). Water can be effective at extinguishing fires fueled by common flammable materials such as wood, paper, and cloth. However, in certain scenarios, water can be undesirable for use as a fire suppressant agent. When extinguishing fires near certain types of objects, such as books or electronic components, exposure to water can damage the objects that the fire suppression system is designed to protect. Clean agents can be used instead of, or in addition to, water to suppress or control fires without causing damage to sensitive objects or requiring extensive clean-up.
  • Clean agents can suppress fires without leaving a residue that requires cleanup.
  • the agents can also be electrically non-conductive. These properties make clean agents useful in certain applications where delicate and/or valuable items or information are stored.
  • clean agent systems can be used to protect telecommunications facilities, aircraft, transport, data centers, medical facilities, archives, museums, oil and gas facilities, power plants, or other areas. Clean agents can be stored as a superpressurized liquid configured to vaporize upon discharge, absorbing heat from the fire and/or from items that are fueling the fire to suppress or control the fire.
  • the agent can be pressurized to the point of condensation into a liquid, and additional gas that condensates at a higher pressure can be added to further pressurize the agent. After absorbing heat, the agent can evaporate.
  • One such clean agent is FK-5-1-12, or 3MTM NovecTM 1230 Fire Protection Fluid (“Novec 1230”), an environmentally sustainable agent with high fire extinguishing efficiency.
  • Clean agent fire suppression systems such as portable fire extinguishers
  • a valve or actuator controls the flow of fire suppressant agent from the tank. Responsive to the actuator being activated, the agent flows outside of the tank, travelling along a length of pipe to one or more nozzles. A nozzle disperses the agent into the surrounding area (e.g., into a room or space).
  • Fire extinguishing capacity can be rated according to widely known industry standards, such as ANSI/UL 711 : Rating and Fire Testing of Fire Extinguishers.
  • the ANSI/UL 711 ratings describe the type of fire an extinguisher can put out as well as extinguishing potential.
  • Various implementations disclosed herein relate to a clean agent extinguisher utilizing FK-5-1-12 or a similar fire suppressant agent having a 2A rating, a minimum rating commonly required in various safety codes and regulations.
  • usage of FK-5-1-12 portable fire extinguishers has been limited.
  • FK-5-1-12 fire suppression devices In order for FK-5-1-12 fire suppression devices to meet performance standards, more uniform discharge of the agent and improved dispersibility is needed.
  • fire suppressant devices can use a pressurized (e.g., compressed) gas to facilitate delivery of a fire suppressant agent
  • a pressurized gas e.g., compressed
  • the configuration of such devices can result in the agent being vaporized, or otherwise outputted, in a manner that can be delayed relative to initial actuation of the device, and can result in poor uniformity and dispersibility, requiring more time to effectively extinguish a fire.
  • a fire suppression device can include one or more tanks to store a fire suppressant agent and a compressed gas.
  • the fire suppression device can include a valve coupled with the tank.
  • the fire suppression device can include a tube disposed in the tank. The tube can have a first end in contact with the fire suppressant agent and a second end in contact with the compressed gas.
  • the fire suppression device can include an orifice coupled with the tube. The orifice can be positioned to allow for mixing of the compressed gas with the fire suppressant agent, responsive to the valve opening, to release the fire suppressant agent from the tank as an atomized fire suppressant agent.
  • a fire suppression device 100 (e.g., a fire extinguisher) is shown.
  • the fire suppression device 100 can provide a pressurized liquid fire suppressant agent 120 to an area for fire suppression.
  • the fire suppressant agent 120 can be a clean fire suppressant agent, such as FK-5-1-12.
  • the fire suppression device 100 can be a portable (e.g., handheld, wheeled, etc.) fire suppression device or can be a permanent fire suppression device for a building space, a duct, a vent, a cooking application, an automotive application, etc.
  • the fire suppression device 100 includes a tank 110 (e.g., vessel, container, reservoir, canister, chamber, etc.).
  • the tank 110 can store an amount (e.g., 25 lb., 26 lb., etc.) of a pressurized liquid fire suppressant agent 120 and an amount of compressed gas 130 (e.g., an inert gas, nitrogen, CO2, etc.). Sidewalls 112 of the tank 110 define an internal volume 114 of the tank 110 configured to store the fire suppressant agent 120 and compressed gas 130.
  • a pressurized liquid fire suppressant agent 120 e.g., 25 lb., 26 lb., etc.
  • compressed gas 130 e.g., an inert gas, nitrogen, CO2, etc.
  • the fire suppressant agent 120 fills a portion of the internal volume 114, and the compressed gas 130 fills the headspace in the tank 110.
  • the compressed gas 130 can have a density less than the density of fire suppressant agent 120. In this way, the fire suppressant agent 120 fills the bottom of the tank 110, while the compressed gas 130 is disposed above the fire suppressant agent 120 at the top of the tank.
  • the compressed gas 130 exerts pressure at a top surface of fire suppressant agent 120.
  • the fire suppressant agent 120 can be liquid fire suppressant or a foam concentrate that takes an aqueous form while inside of the tank 110.
  • the fire suppression device 100 includes a syphon tube 150 (e.g., supply tube, pickup tube, pipe, flow passage, conduit, etc.).
  • the syphon tube 150 can convey the fire suppressant agent 120 from the internal volume 114 of the tank 110. As shown in FIG. 1, the syphon tube 150 extends into the internal volume 114 of the tank 110 such that an end of the syphon tube 150 extends into the fire suppressant agent 120.
  • the end of the syphon tube 150 includes an aperture 152, which can receive fire suppressant agent 120 therethrough.
  • the fire suppression device 100 can include a mixing orifice 154.
  • the mixing orifice 154 can mix the compressed gas 130 into the flow of the fire suppressant agent 120.
  • the flow of fire suppressant agent 120 into the can result in intermittent, or sputtering, discharge.
  • the mixing orifice 154 can allow the compressed gas 130 to flow into the syphon tube 150, mixing with the flow of fire suppressant agent 120, thereby atomizing the fire suppressant agent 120.
  • a mixing orifice 154 to introduce the compressed gas 130 into the flow of the fire suppressant agent 120 improves the dispersibility of the fire suppressant agent 120 and creates a more uniform discharge of the fire suppressant agent 120 compared to conventional fire suppression devices, which do not atomize the fire suppressant agent.
  • FIG. 2 an exterior side view of the fire suppression device 100 of FIG. 1.
  • the fire suppression device 100 includes a valve 144 fluidly coupled with the syphon tube 150.
  • the valve 144 can move from a closed configuration to an open configuration when actuated. When the valve 144 is in the closed configuration, flow through the valve 144 is restricted. When the valve 144 is in the open configuration, or actuated, the fire suppressant agent 120 flows from the internal volume 114 of the tank 110 up the syphon tube 150 through the aperture 152, and through the valve 144.
  • the valve 144 is transitioned between the open configuration and the closed configuration by an actuator, shown as handle 142.
  • the handle 142 is coupled to the valve 144 and can enable selectively coupling of the internal volume 114 of the tank 110 to a hose 160 (e.g., a hose, a pipe, a tube, etc.) and a nozzle 170 to discharge the fire suppressant agent 120 responsive to an operator depresses the handle 142.
  • a hose 160 e.g., a hose, a pipe, a tube, etc.
  • a nozzle 170 to discharge the fire suppressant agent 120 responsive to an operator depresses the handle 142.
  • the actuator is an electric actuator (e.g., a solenoid, an electronic actuator, a motor, etc.).
  • the valve 144 is fluidly coupled with the hose 160. Responsive to the valve 144 being actuated, the flow of fire suppressant agent 120 flows through the valve 144 and into the hose 160.
  • the hose 160 conveys the atomized fire suppressant agent 120 to one or more outlets, shown as the nozzle 170.
  • the hose 160 can be an assembly including one or more straight or bent sections of conduit and/or one or more fittings.
  • the nozzle 170 can generate a spray of fire suppressant agent 120 (e.g., diffuse, disperse, spread, etc.) to address one or more fires.
  • the fire suppression device 100 can not include a hose 160, and the nozzle 170 can be fluidly coupled to the valve 144, as shown in FIG. 4.
  • FIG. 3 shows an internal side view of a fire suppression device 100.
  • the fire suppression device 100 includes a valve 144 fluidly coupled with the syphon tube 150.
  • the valve 144 can be a spring actuated valve that can be manually activated by the user squeezing the handle 142. This opens the valve 172 and allows the fire suppressant agent 120 to flow through the syphon tube 150.
  • the aperture 152 of the syphon tube 150 can partially extend away from the bottom the tank.
  • the aperture 152 can define a semicircular portion that extends upwards on one or more sides of the syphon tube 150.
  • the syphon tube 150 can sit flush with the bottom wall of the fire suppression device 100 and pick up the fire suppressant agent 120 by the extended portion of the aperture 152.
  • the extension portion of the aperture 152 can be semi-circular, square, triangular, or a similar shape. As the fire suppressant agent 120 is sucked through the aperture 152, it can continue to flow through the open valve 172, and through the hose 160.
  • the hose 160 can be fluidly coupled with a nozzle 170. As shown in FIG. 4, the nozzle 170 can be directly coupled with the valve 172. In this way, the fire suppression device 100 can be more compact for convenience. In some implementations, a nozzle 170 is directly coupled to the valve 172 to make the fire suppression device 100 suitable for high pressure fire suppressant applications.
  • the fire suppression device 100 can include an internal cartridge 158 (e.g., canister, reservoir, container, etc.) inside the tank 110.
  • the internal cartridge 158 can hold compressed gas 130 (e.g., CO2, nitrogen, etc.).
  • the internal cartridge is sealed with can be sealed, for example, with a burst disk.
  • the cartridge can be actuated via an actuator coupled to the valve 144 such that the compressed gas 130 is released when the valve 144 is opened, thereby pressurizing the internal volume 114 of tank 110.
  • the gas exerts pressure on the fire suppressant agent 120 and drives the fire suppressant agent 120 through the syphon tube 150.
  • the fire suppressant agent is driven through the syphon tube 150, the gas released from the internal cartridge 158 is sucked into the mixing orifice 154, thereby mixing the gas with the fire suppressant agent.
  • the fire suppression device includes a tank and fluidly couple with the inner volume 14 of the tank 12 via a conduit (e.g., pipe, tubular member, etc.)
  • the external cartridge fire suppression device 10 can store and discharge a fire suppressant agent for use in suppressing, extinguishing, controlling, etc., a fire.
  • the external cartridge fire suppression device 10 includes a tank 12 (e.g., a canister, a cartridge, a container, a reservoir, a tank, etc.) configured to store the fire suppressant agent.
  • the tank 12 includes an inner volume 14, within which the fire suppressant agent is stored until the external cartridge fire suppression device 10 is activated to discharge the fire suppressant agent.
  • the fire suppressant agent can be pressurized within the tank 12 and can be stored in the form of a liquid, a gas, a saturated liquid/gas mixture, etc.
  • the external cartridge fire suppression device 10 also includes a handle assembly 16, a tubular member 22 (e.g., a hose, a conduit, a pipe, a flexible pipe, etc.), a cartridge 30 (e.g., a canister, a tank, an external cartridge, etc.), an activation button 26, and a cover 20.
  • the tank 12 is fluidly coupled with an inner volume of the cartridge 30 through a valve 50 and a channel 52.
  • the tubular member 22 is fluidly coupled (e.g., selectively, or removably coupled) with the inner volume 14 of the tank 12 through a passageway 60 (e.g., an outlet for expelling the fire suppressant agent).
  • the tubular member 22 can be the same or substantially similar to the syphon tube 150.
  • the cartridge 30 can include an inner volume, within which a compressed or propellant gas is stored (e.g., CO2, nitrogen, etc.).
  • the tank 12 can also include a cap 18 that can seal the inner volume 14 of the tank 12. The cap 18 can be removable to recharge or re-fill the inner volume 14 of the tank 12 with new fire suppressant agent.
  • the cartridge 30 can selectively fluidly couple with the inner volume 14 of the tank 12 through the channel 52 when the valve 50 is transitioned from a closed position to an open position.
  • the valve 50 can be transitioned between the closed position and the open position by operation of the activation button 26. For example, pressing the activation button 26 transitions the valve 50 from the closed position to the open position, thereby fluidly coupling the cartridge 30 with the inner volume 14 of the tank 12.
  • the propellant gas can expand, and flow from the cartridge 30 to the inner volume 14 of the tank 12, through the valve 50 and the channel 52.
  • the propellant gas pressurizes the fire suppressant agent within the inner volume 14 of the tank 12 so that the fire suppressant agent is biased into, or through, the tubular member 22.
  • the tubular member 22 can be coupled with a valve handle (not shown).
  • the valve handle can include a valve 50 operable by a user between an open position and a closed position. Responsive to the propellant gas pressurizing the fire suppressant agent in the inner volume 14 of the tank 12, and the valve handle is transitioned into the open position, the fire suppressant agent can be driven to exit the inner volume 14 of the tank 12, through the tubular member 22, and exit the tubular member 22 through the valve handle (e.g., through an outlet aperture, a nozzle of the valve handle, etc.).
  • the tubular member 22 can include a mixing orifice at its end nearest the valve 50. In this way, the gas released from the cartridge 30 can mix with the fire suppressant travelling through the tubular member 22.
  • the user can grasp and hold the external cartridge fire suppression device 10 at the handle assembly 16.
  • the handle assembly 16 can facilitate proper angulation of the tank 12.
  • the user can grasp the handle assembly 16, press the activation button 26, and direct the tubular member 22 and the valve handle towards different areas to dispense or discharge the fire suppressant agent, while operating the valve handle.
  • the handle assembly 16 facilitates portability of the external cartridge fire suppression device 10. Wheels can be coupled with the bottom portion of the tank (e.g., the end opposite the cap 18) to further facilitate portability of the external cartridge fire suppression device 10.
  • the syphon tube 150 can include or be coupled with the mixing orifice 154.
  • the mixing orifice 154 can be disposed in the syphon tube 150, such as to be coupled with a wall of the syphon tube 150 or supported in the syphon tube 150.
  • the syphon tube 150 has a constant diameter along a length of the syphon tube 150.
  • the syphon tube 150 has a variable diameter along a length of the syphon tube 150, such as a taper.
  • the mixing orifice 154 can be positioned above a top surface of the fire suppressant agent 120 (e.g., above a target or initial level for the fire suppressant 120 in the tank 110) by a distance 156, such as to be positioned in a portion of the tank 110 corresponding to where the compressed gas 130 is disposed.
  • the distance 156 is configured such that the mixing orifice 154 does not take in fire suppressant agent 120.
  • the placement of the mixing orifice 154 determines its efficacy as a means of mixing the compressed gas 130 with the fire suppression agent 120.
  • the mixing orifice 154 can be a single hole on a wall of the syphon tube 150.
  • the mixing orifice 154 can extend through the syphon tube 150 (e.g., from an outer surface of the syphon tube 150 to an inner surface of the syphon tube 150). While shown as a single mixing orifice 154, the mixing orifice 154 can include a plurality of mixing orifices 154, such as an area of perforations. The mixing orifice 154 can include a screen or mesh material. The mixing orifice can be formed by a cluster of small perforations in the syphon tube. For example, many perforations (e.g., 10, 15, 20) can be laser cut into the syphon tube to form the mixing orifice 154.
  • the mixing orifice 154 can vary in shape (e.g., a circle, an oval, a slot, etc.) and diameter (1/32”, 1/16”, 1/8”, 1/4"), depending on desired performance.
  • the diameter of mixing orifice 154 can be varied to change discharge time or flow rate.
  • the first path can be defined by the fire suppressant agent 120 in the tank 110 being forced up the syphon tube 150 due to the pressure exerted on the fire suppressant agent 120 by the compressed gas 130.
  • the second path can be defined as the fire suppressant agent 120 flows through the syphon tube 150, the pressure within the syphon tube 150 decreases, due to the Venturi effect, creating a pressure differential between the inside of the syphon tube 150 and the outside of the syphon tube 150. The pressure differential pulls the compressed gas 130 into the syphon tube 150 through the mixing orifice 154.
  • the compressed gas 130 mixes with the fire suppressant 120.
  • the introduction of compressed gas 130 into the flow of fire suppressant agent 120 being discharged creates a mixture of liquid and gas. Responsive to being mixed, the compressed gas 130 atomizes the fire suppressant agent 120, converting it into finer particles.
  • the fire suppressant agent 120 In fire suppression devices without a mixing orifice, the fire suppressant agent 120, is stored as liquid within the tank 110 and is typically vaporized upon discharge. However, this liquid vaporization takes time after the initial actuation, and can result in poor uniformity and dispersibility, requiring more time to effectively extinguish a fire.
  • the fire suppressant agent 120 By atomizing the fire suppressant agent 120 with the compressed gas 130 prior to discharge using the mixing orifice 154, the fire suppressant agent 120 can create a finer mist, or spray, that more is uniform, and improves dispersibility and evaporation of the fire suppressant agent 120.
  • the discharged atomized fire suppressant agent 120 can more quickly and effectively absorb heat to extinguish a fire upon actuation, relative to non-atomized fire suppressant agent.
  • a method 200 of atomizing a fire suppressant agent 120 is shown. Using this method, the fire suppressant agent 120 is mixed with a compressed gas 130 when discharged. The compressed gas 130 is introduced into the flow of fire suppressant agent 120 in the syphon tube 150 through a mixing orifice 154. As the fire suppressant agent 120 and compressed gas 130 mix, the compressed gas 130 atomizes the fire suppressant agent.
  • a syphon tube 150 receives a pressurized liquid fire suppressant agent 120.
  • the syphon tube 150 can be within a tank 110 configured to contain a pressurized fire suppressant agent 120.
  • the tank 110 can be coupled to a valve 144, such that when actuated, the fire suppressant agent 120 is forced into the syphon tube 150 through an aperture 152.
  • step 220 at least one mixing orifice 154 extending through a wall of the syphon tube 150 receives compressed gas 130.
  • the pressure within the syphon tube 150 decreases, due to the Venturi effect, creating a pressure differential between the inside of the syphon tube 150 and the outside of the syphon tube 150.
  • the pressure differential pulls the compressed gas 130 into the syphon tube 150 through the mixing orifice 154.
  • the compressed gas 130 can be pulled from within the tank.
  • the compressed gas 130 can be pulled from a separate cartridge fluidly coupled to the tank 110 via a conduit as shown in FIG. 6.
  • step 230 the fire suppressant agent 120 and the compressed gas 130 combine within the syphon tube 150.
  • the compressed gas 130 mixes with the fire suppressant agent 120.
  • step 240 the compressed gas 130 atomizes the fire suppressant agent 120 to generate an atomized fire suppressant agent 120.
  • step 250 a second end of the syphon tube opposite the first end, discharges the atomized fire suppressant agent 120.
  • Coupled means the joining of two members directly or indirectly to one another. Such joining can be stationary (e.g., permanent or fixed) or moveable (e.g., removable or releasable). Such joining can be achieved with the two members coupled directly to each other, with the two members coupled to each other using a separate intervening member and any additional intermediate members coupled with one another, or with the two members coupled to each other using an intervening member that is integrally formed as a single unitary body with one of the two members.
  • Coupled or variations thereof are modified by an additional term (e.g., directly coupled)
  • the generic definition of “coupled” provided above is modified by the plain language meaning of the additional term (e.g., “directly coupled” means the joining of two members without any separate intervening member), resulting in a narrower definition than the generic definition of “coupled” provided above.
  • Such coupling can be mechanical, electrical, or fluidic.
  • References herein to the positions of elements e.g., “top,” “bottom,” “above,” “below” are merely used to describe the orientation of various elements in the FIGURES. It should be noted that the orientation of various elements can differ according to other exemplary implementations, and that such variations are intended to be encompassed by the present disclosure.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

La présente invention concerne un dispositif de suppression d'incendie comprenant un réservoir stockant un agent de suppression d'incendie et un gaz comprimé. Une soupape est en communication fluidique avec un tube de siphon dans le réservoir et peut ouvrir et libérer l'agent de suppression d'incendie. Le tube de siphon comprend une ouverture d'entrée, une ouverture de sortie, un premier passage d'écoulement s'étendant entre l'ouverture d'entrée et l'ouverture de sortie en communication fluidique avec l'agent de suppression d'incendie, et au moins un orifice de mélange s'étendant à travers une paroi du tube de siphon en aval de l'ouverture d'entrée. Un second passage d'écoulement est défini par l'au moins un orifice de mélange en communication fluidique avec le gaz comprimé. Lorsque la soupape est ouverte, l'agent de suppression d'incendie s'écoule à travers le premier passage et le gaz comprimé s'écoule à travers le second passage de telle sorte que le gaz comprimé atomise l'agent de suppression d'incendie, formant un agent de suppression d'incendie atomisé.
PCT/IB2024/054454 2023-05-10 2024-05-07 Extincteur d'incendie à agent propre avec orifice de mélange Pending WO2024231842A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363501288P 2023-05-10 2023-05-10
US63/501,288 2023-05-10

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WO2024231842A1 true WO2024231842A1 (fr) 2024-11-14

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Citations (5)

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US6422320B1 (en) * 1999-09-30 2002-07-23 University Of New Mexico Enhanced agent misting extinguisher design for fire fighting
US20070102167A1 (en) * 2005-11-04 2007-05-10 Hector Rousseau Self servicing fire extinguisher with external operated internal mixing with wide mouth and external pressurized canister
US20210322809A1 (en) * 2017-05-16 2021-10-21 Robert Czarnek Water-Mist Fire Extinguishing System

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417674A (en) * 1978-04-13 1983-11-29 Coster Tecnologie Speciali S.P.A. Valve for the admixture of fluids and delivery of the resulting mixture
US6422320B1 (en) * 1999-09-30 2002-07-23 University Of New Mexico Enhanced agent misting extinguisher design for fire fighting
US6394364B1 (en) * 2000-09-29 2002-05-28 Robert Henry Abplanalp Aerosol spray dispenser
US20070102167A1 (en) * 2005-11-04 2007-05-10 Hector Rousseau Self servicing fire extinguisher with external operated internal mixing with wide mouth and external pressurized canister
US20210322809A1 (en) * 2017-05-16 2021-10-21 Robert Czarnek Water-Mist Fire Extinguishing System

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