EP3991805B1 - Dispositif d'alimentation en mousse - Google Patents

Dispositif d'alimentation en mousse Download PDF

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Publication number
EP3991805B1
EP3991805B1 EP21176801.5A EP21176801A EP3991805B1 EP 3991805 B1 EP3991805 B1 EP 3991805B1 EP 21176801 A EP21176801 A EP 21176801A EP 3991805 B1 EP3991805 B1 EP 3991805B1
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EP
European Patent Office
Prior art keywords
foam
supply device
foam supply
air
openings
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Application number
EP21176801.5A
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German (de)
English (en)
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EP3991805C0 (fr
EP3991805A1 (fr
Inventor
Harald Neumaerker
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Individual
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Individual
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Publication of EP3991805B1 publication Critical patent/EP3991805B1/fr
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/02—Making of fire-extinguishing materials immediately before use of foam
    • A62C5/022—Making of fire-extinguishing materials immediately before use of foam with air or gas present as such
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/02—Making of fire-extinguishing materials immediately before use of foam
    • A62C5/022—Making of fire-extinguishing materials immediately before use of foam with air or gas present as such
    • A62C5/024—Apparatus in the form of pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/005—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0425—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3415—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with swirl imparting inserts upstream of the swirl chamber

Definitions

  • the invention relates to a foam feeder for discharging a fluorine-free foam agent, and more particularly to a foam tube for use with a portable fire extinguisher according to the preamble of claim 1, and a fire extinguishing system having such a foam feeder.
  • a fires Fires involving solids such as wood are referred to as A fires, while fires involving liquids such as heptane are referred to as B fires.
  • a fire extinguishing system must pass the so-called current test.
  • current test When extinguishing a fire in an electrical system using a fire extinguisher, according to EN3-7 it is important that the fire extinguisher does not exceed a maximum permissible current value.
  • the droplet size of the extinguishing foam is dimensioned such that a maximum current intensity of 500 ⁇ A can be conducted to a fire extinguisher positioned 1 m away from a live metal plate.
  • the size of the metal plate is 1 ⁇ 1 m and the applied voltage is 35 kV.
  • the foam suitable for extinguishing must therefore have a certain drop size that allows the foam to be thrown sufficiently far.
  • large drops result in a current that exceeds the permissible level being directed back to the fire extinguisher. If the drops are too small, this in turn means that when a burning liquid (e.g. heptane) is extinguished, the foam absorbs the burning liquid and can even cause the fire to spread.
  • a burning liquid e.g. heptane
  • the foam must have an optimal number of bubbles, otherwise the foam will be too light (i.e. the density of the foam is too low). This means that in unfavorable weather conditions, especially wind, the throwing distance is affected. The wind, for example, ensures that foam that is too light is tolerated and does not reach the fire site.
  • the applicant has already presented a foam pipe that achieves excellent results in this regard with known foam agents.
  • the foam tube according to the prior art has a length of 65 mm. Air inlet openings through the wall of the foam tube have a width (extension in the axial direction) of 9.75 mm to ensure sufficient air supply for foam formation. If the length of the foam tube is exceeded and/or the width of the air supply openings is reduced, this leads to remarkably deteriorated results in the current test or foam formation. If the pipe is lengthened to increase the throw distance, the drops become too large, while reducing the width of the air inlet openings results in increased bubble formation.
  • a foam supply device for ejecting a foam agent has a bottom piece for connection to a foam agent storage and a wall for forming an inner space for guiding a foam agent to a discharge opening in a longitudinal axis direction of the foam supply device.
  • Two or more inlet openings for the foam agent which are connected to the inner space and are designed to taper, are provided in the base piece.
  • air openings are provided in the wall, which serve to introduce ambient air into the foam agent flow.
  • a total length of the foam tube is between 60 and 85 mm.
  • a passage area of each of the air holes is between 6.4 mm 2 and 20.8 mm 2 .
  • the foam agent flow is turbulent. This results in a good distribution of the foam agent.
  • the distribution of the fluorine-free foam agent is further optimized. Due to the high speed of the foam agent flow, a very high throw of the foam agent of 4 to 15 m is surprisingly possible compared to the prior art. This value is more than twice as high as for the foam pipe according to the prior art. The extraordinarily high throwing distance leads to significantly increased user safety.
  • each of the air openings does not exceed a very small area of 20.8 mm 2 compared to the known foam tube
  • the use of fluorine-free foam agents surprisingly results in the formation of a foam whose droplet size and density meets the requirements described in the introduction even exceeds this without an increased amount of air bubbles being formed. Additionally, a greater throw distance is possible, improving a user's safety as they can stay further away from the fire.
  • the passage area of each of the air openings is preferably 7.6 mm 2 , 13.9 mm 2 , 20.8 mm 2 .
  • the total length of the foam supply device can be between 60 and 72 mm or between 72 and 85 mm. This total length is preferably 65 mm, 72 mm or 79 mm.
  • a dimension from an edge of the air opening closest to the ejection opening to the ejection opening in the longitudinal axis direction of the foam supply device can be 40 mm to 60 mm. Values of 42.75 mm, 46.75 mm, 48.25 mm, 49.75 mm, 53.75 mm are particularly preferred here.
  • longitudinal ribs which taper in the direction of the ejection opening can advantageously be provided inside the foam supply device between the air openings.
  • the number of air openings is advantageously two to six. A number of four is preferred.
  • the air openings are advantageously arranged symmetrically to the central axis.
  • the values for the width (extension in axial length) and the passage area of each of the air openings result from the following table: Width (extent in axial length (mm) Passage area (mm 2 ) 2.00 7.60 3.50 13.90 5.00 20.80 8.00 35.50 9.00 40.90
  • a width of 8.00 mm and 9.00 mm as well as the corresponding passage areas of 35.50 mm 2 and 40.90 mm 2 do not fall within the scope of the invention.
  • the air openings can advantageously be designed to taper inwards. Through such a reverse conical or reverse pyramid-like shape of the air openings in the wall, the air flow entering the inner space can be well channeled and its speed can be adjusted in the desired manner. The values given above are then present on the inner wall of the foam supply device.
  • the passage area corresponds to the projected smallest inner cross-sectional area.
  • the number of entry openings is advantageously between two and six. Depending on the extinguishing container and extinguishing time, two or four inlet openings are preferred.
  • the base piece can advantageously be provided with an external thread.
  • the foam supply device to the foam storage device, which can be designed as a fire extinguisher, or to a part connected to the foam storage device, such as a fire extinguishing gun or a hose.
  • a secure connection can be made using an extinguishing gun or an adapter.
  • the base piece can advantageously have knobs on a surface facing away from the inner space.
  • the knobs can be used to create a distance between a sieve and the base piece.
  • the sieve can be used to influence the foam quality.
  • the foam supply device can be designed to be essentially tubular as a foam tube and the inner space can have a substantially circular cross section.
  • a fire extinguishing system has a foam supply device as described above. It also has a tank container that contains a fluorine-free foam agent and a propellant.
  • An adapter or extinguishing gun has a connecting means for connection to the base piece of the foam supply device.
  • a hose is provided to connect the tank container and the adapter or fire gun.
  • a sieve can be provided between the adapter or the extinguishing gun and the base piece of the foam supply device.
  • a cross-sectional area of the inner space in the base piece can be made smaller than in the ejection opening. This further optimizes the flow conditions for better foam distribution.
  • Part of the inlet openings can be closed to divert the foam agent flow at the end of the inlet opening connected to the inner space.
  • the deflection of the foam agent flow creates reinforcement the turbulence and improved turbulence and thus distribution of the foam agent are achieved.
  • the part of the inlet openings is closed by a section of the wall. Some of the entry openings end in the material of the wall, so that only a significantly smaller passage to the inner space remains.
  • the cross section of the end of the inlet openings which is designed as a passage and is connected to the inner space, can be essentially semicircular.
  • the inner space can also have several sections with cross-sectional areas of different sizes. Ribs running in the longitudinal direction of the foam supply device can also be provided on the inside of the wall. The ribs can be designed in such a way that their height continuously decreases in the direction of the inlet openings.
  • the air opening can be essentially rectangular and delimited in a direction transverse to the longitudinal axis of the foam supply device by two of the ribs.
  • the inner space can advantageously consist of a plurality of sections, whereby the diameter of the adjacent section in the direction of the ejection opening can be made larger, starting from a base section in the area of the base section.
  • a transition from the base section to a middle section adjacent to it in the direction of the ejection opening can be designed to be beveled, for example by means of a chamfer.
  • the air opening can advantageously be formed in the wall at an end axially opposite the ejection opening of an ejection opening section located in the area of the ejection opening. There is one on the floor piece directed edge of the air opening at the boundary area between the middle section and the ejection section.
  • an inner diameter of a base section of the inner space in the base section can be between 5mm and 9mm, a middle section can be between 7mm and 11mm and an ejection opening section in the ejection opening can be between 15mm and 25mm.
  • An opening angle of the inlet opening can be between 55° and 65°.
  • the number of inlet openings is preferably two or four.
  • the number of inlet openings preferably depends on the size of the extinguishing container, and the number of air openings can also be four.
  • the air openings and/or the inlet openings can be arranged symmetrically to the central axis.
  • the air openings can be provided in the area of the ejection opening section and delimited by the ribs in a direction transverse to the longitudinal axis.
  • the foam supply device By changing the geometry of the foam supply device, it is advantageously possible to set a foaming number of the foam.
  • different types of extinguishing containers with different container sizes, different fluorine-free foam agents, different propellants (CO2 / N2 and its amount) and different types of supply of the propellant into the extinguishing container e.g. via a gas pipe or the propellant is located in the Extinguishing container (permanent pressure extinguisher) can be used.
  • the values mentioned above regarding throw distance and passing the current test are always achieved.
  • a structure of a foam supply device according to the invention is based on Fig. 1 to 5 described. According to the embodiment shown, the foam supply device is designed as a foam tube.
  • the foam tube is essentially formed in the shape of a cylinder.
  • a base piece 1 whose diameter is smaller than the diameter of the cylinder.
  • an external thread 11 for attaching the foam pipe to a fire extinguisher, a hose, a fire extinguishing gun or the like. intended.
  • the diameter of the base piece is 16 mm with a length of 10 mm compared to a diameter of the foam tube of 20.5 mm with a total length between 60 and 85 mm.
  • Two tapered inlet openings 7 are provided in the bottom of the base piece, the tapered ends of which partially end like a blind hole in a wall 3 of the cylinder.
  • the remaining portion of the tapered ends represents a Connection to a base section of an inner space of the cylinder defined within the base piece 1 by a wall 3.
  • the remaining part of the tapered ends is essentially semicircular.
  • the opening angle of the inlet openings 11 is 60° according to the embodiment.
  • the inner diameter of the base piece section is 7 mm.
  • a center portion Adjacent to the base portion in the longitudinal axis direction of the cylinder, a center portion is provided, the diameter of which is 9 mm and a length of 6.75 mm.
  • the wall 3 Adjacent to the middle section, the wall 3 defines an ejection section and an ejection opening 5 in the longitudinal axis direction of the cylinder on the base section. In an area of the ejection section adjacent to the base section, four air inlet openings 9 are provided in the wall 3, through which ambient air can enter the foam tube .
  • the inner diameter of the ejection section is 19 mm.
  • the outer diameter of the foam tube is 20.5 mm while the outer diameter of the foam tube in the area of the ejection section is 22 mm.
  • the width b1 (corresponds to an extension in the direction of the longitudinal axis of the foam tube) of the air inlet openings 9 is between 2 and 9 mm.
  • An inlet area of each of the air inlet openings 9 for the air is between 7.6 mm 2 and 20.8 mm 2 .
  • the entry area of each of the air inlet openings 9 is 13.9 mm 2 .
  • the width bl is 3.5 mm. However, it should be noted that due to manufacturing tolerances, deviations of approximately 10% from these values may occur.
  • the air inlet openings 9 are delimited by longitudinal ribs 13.
  • the longitudinal ribs 13 are provided on the inner wall of the ejection section and have a width of 3.9 mm.
  • the height of the longitudinal ribs 13 at its end adjacent to the middle section is dimensioned such that there is a uniform transition from the wall of the middle section to the longitudinal ribs 13, while the transition to the area of the ejection space next to the longitudinal ribs takes place suddenly.
  • the longitudinal ribs 13 are designed to taper towards the ejection opening and merge into the wall 3 in a front area of the ejection space. Due to the longitudinal ribs 13, the passage surface of each air opening 9 has a trapezoidal shape in a top view. This is for example from the Fig. 1 visible.
  • the functionality of the foam tube is determined by the 6 and 7 visible.
  • a foam agent flows from a foam agent reservoir, which can be designed as a fire extinguisher, for example, into the foam pipe connected to it via the external thread.
  • a foam agent reservoir which can be designed as a fire extinguisher, for example, into the foam pipe connected to it via the external thread.
  • This foam agent stream is marked by solid arrows.
  • the foam agent flow After passing through the tapered inlet openings 7 in the base piece 1, the foam agent flow is strongly swirled as it enters the base piece section through the openings, which are reduced to the essentially semicircular shape, and then in the form of a turbulent flow through the base piece section and the middle section into the ejection section to stream.
  • ambient air is sucked into the ejection section via the air inlet openings 9 by the flow of the foam agent and mixed with the foam agent flow.
  • the ambient air is in Figs. 6 and 7 shown by dashed arrows.
  • An optimized mixture of air and foam agent is created, which is ejected through the ejection opening 5.
  • the Figures 8a and 8b each show a foam pipe, not to scale.
  • a total length I of the foam tube is 79 mm.
  • the width b1 of the air supply openings 9 is 3.5 mm, which results in a passage area of 13.9 mm 2 for each air opening.
  • the length IA from the edge of the air supply opening 9 directed towards the ejection opening 5 to the ejection opening 5 is 55.25 mm. It is noted that the total length I of the foam tube, the width b1 of the air supply openings as well as the length IA are measured from the edge of the air supply opening facing the ejection opening to the ejection opening parallel to the axis of the foam tube.
  • the foam tube according to the invention shown as an example has a total length of 65 mm and the width b1 of the air supply openings is 2 mm.
  • the figure here is not to scale, but rather schematic like the other figures. Therefore, other dimensions cannot be inferred from the representation of the width b1 in the figure.
  • a length IA from the edge of the air supply opening 9 directed towards the ejection opening 5 to the ejection opening 5 is 42.75 mm.
  • the total length I of the foam tube, the width b1 of the air supply openings as well as the length IA are measured from the edge of the air supply opening directed towards the ejection opening to the ejection opening parallel to the axis of the foam tube.
  • the base piece is provided with knobs 17, which create a distance from a sieve that can be used as a pressure reducer.
  • the sieve can influence the foam formation in the desired way. Both examples also show an area 15 that has no technical significance but is intended for attaching a company logo, etc.

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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)

Claims (15)

  1. Dispositif d'alimentation en mousse pour éjecter un agent moussant exempt de fluor, comprenant
    une partie de base (1) destinée à être reliée à un réservoir d'agent moussant,
    une paroi (3) pour former un espace intérieur afin de guider un agent moussant dans une direction d'axe longitudinal du dispositif d'alimentation en mousse vers une ouverture d'éjection (5), des orifices d'entrée (7) pour l'agent moussant, reliés à l'espace intérieur, étant prévus dans la pièce de base (1),
    dans lequel
    les orifices d'entrée (7) sont conçus de manière à aller en se rétrécissant, de sorte que la vitesse d'écoulement de l'agent moussant s'écoulant du réservoir d'agent moussant dans le dispositif d'alimentation en mousse augmente, et dans lequel
    plusieurs ouvertures (9) pour de l'air sont prévues dans la paroi (3) pour l'introduction d'air ambiant dans le flux d'agent moussant,
    la longueur totale du dispositif d'alimentation en mousse, mesurée depuis les orifices d'entrée (7) dans la pièce de base (1) jusqu'à l'ouverture d'éjection (5), étant comprise entre 60 et 85 mm, caractérisé en ce que
    une surface de passage de chacune des ouvertures (9) pour l'air est comprise entre 6,4 mm2 et 20,8 mm2.
  2. Dispositif d'alimentation en mousse selon la revendication 1, dans lequel
    la surface de passage de chacune des ouvertures (9) pour l'air est de 7,6 mm2 ou de 13,9 mm2 ou de 20,8 mm2.
  3. Dispositif d'alimentation en mousse selon la revendication 1 ou 2, dans lequel
    la longueur totale du dispositif d'alimentation en mousse, mesurée depuis les orifices d'entrée (7) dans la pièce de base (1) jusqu'à l'orifice d'éjection (5), est comprise entre 60 et 72 mm ou entre 72 et 85 mm.
  4. Dispositif d'alimentation en mousse selon la revendication 3, dans lequel
    la longueur totale du dispositif d'alimentation en mousse, mesurée depuis les orifices d'entrée (7) dans la pièce de base (1) jusqu'à l'orifice d'éjection (5), est de 65 mm ou 72 mm ou 79 mm.
  5. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 4, dans lequel
    une dimension (IA) allant d'un bord de l'ouverture d'air (9) le plus proche de l'ouverture d'éjection (5) jusqu'à l'ouverture d'éjection (5) dans la direction de l'axe longitudinal du dispositif d'alimentation en mousse est de 40 mm à 60 mm.
  6. Dispositif d'alimentation en mousse selon la revendication 5, dans lequel
    la dimension (IA) depuis le bord d'une ouverture d'air (9) le plus proche de l'ouverture d'éjection (5) jusqu'à l'ouverture d'éjection (5) dans la direction de l'axe longitudinal du dispositif d'alimentation en mousse est de 42,75 mm ou 46,75 mm ou 48,25 mm ou 49,75 mm ou 53,75 mm.
  7. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 6, dans lequel
    des nervures longitudinales (13) sont prévues à l'intérieur du dispositif d'alimentation en mousse entre les ouvertures (9) pour l'air, lesquelles vont en se rétrécissant en direction de l'ouverture d'éjection (5).
  8. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 7, dans lequel
    le nombre d'ouvertures (9) pour l'air est de deux à six, et les ouvertures (9) pour l'air sont aménagées symétriquement par rapport à l'axe central, le nombre d'ouvertures pour l'air étant de préférence de quatre.
  9. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 8, dans lequel les ouvertures (9) pour l'air sont réalisées de manière à aller en se rétrécissant vers l'intérieur.
  10. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 9, dans lequel
    le nombre d'orifices d'entrée (7) est compris entre deux et six, le nombre d'orifices d'entrée (7) étant de préférence de deux à quatre.
  11. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 10, dans lequel la pièce de base (1) est pourvue d'un filetage extérieur (11).
  12. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 11, dans lequel la pièce de base (1) présente des picots (17) sur une surface opposée à l'espace intérieur.
  13. Dispositif d'alimentation en mousse selon l'une des revendications 1 à 12, dans lequel le dispositif d'alimentation en mousse est sensiblement tubulaire, sous la forme d'un tube de mousse, et l'espace intérieur présente une section transversale sensiblement circulaire.
  14. Système d'extinction d'incendie comprenant un dispositif d'alimentation en mousse selon l'une des revendications 1 à 13, et comprenant
    un réservoir contenant un agent moussant sans fluor et un agent propulseur,
    un adaptateur ou un pistolet d'extinction avec un moyen de connexion pour la connexion à la pièce de base (1) du dispositif d'alimentation en mousse, et
    un tuyau reliant le réservoir et l'adaptateur ou le pistolet d'extinction.
  15. Système d'extinction d'incendie selon la revendication 14, dans lequel un tamis est prévu entre l'adaptateur ou le pistolet d'extinction et la partie de base (1) du dispositif d'alimentation en mousse.
EP21176801.5A 2020-10-29 2021-05-31 Dispositif d'alimentation en mousse Active EP3991805B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20204565 2020-10-29

Publications (3)

Publication Number Publication Date
EP3991805A1 EP3991805A1 (fr) 2022-05-04
EP3991805C0 EP3991805C0 (fr) 2024-01-10
EP3991805B1 true EP3991805B1 (fr) 2024-01-10

Family

ID=73037910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21176801.5A Active EP3991805B1 (fr) 2020-10-29 2021-05-31 Dispositif d'alimentation en mousse

Country Status (2)

Country Link
EP (1) EP3991805B1 (fr)
PL (1) PL3991805T3 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006020889U1 (de) 2006-10-16 2011-01-05 Neumaerker, Harald, Dr. Schaumzufuhreinrichtung
US8360339B2 (en) * 2008-11-13 2013-01-29 Forced Gas Technologies, Llc Fire suppression apparatus and method for generating foam

Also Published As

Publication number Publication date
EP3991805C0 (fr) 2024-01-10
EP3991805A1 (fr) 2022-05-04
PL3991805T3 (pl) 2024-04-02

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