EP4450133B1 - Schwimmende additivdosierung für einen wasserlöscher - Google Patents

Schwimmende additivdosierung für einen wasserlöscher

Info

Publication number
EP4450133B1
EP4450133B1 EP23315493.9A EP23315493A EP4450133B1 EP 4450133 B1 EP4450133 B1 EP 4450133B1 EP 23315493 A EP23315493 A EP 23315493A EP 4450133 B1 EP4450133 B1 EP 4450133B1
Authority
EP
European Patent Office
Prior art keywords
container
dose
floating
tank
open end
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.)
Active
Application number
EP23315493.9A
Other languages
English (en)
French (fr)
Other versions
EP4450133C0 (de
EP4450133A1 (de
Inventor
M. Thierry Delande
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.)
Tf France
Original Assignee
Tf France
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 Tf France filed Critical Tf France
Priority to EP23315493.9A priority Critical patent/EP4450133B1/de
Publication of EP4450133A1 publication Critical patent/EP4450133A1/de
Application granted granted Critical
Publication of EP4450133C0 publication Critical patent/EP4450133C0/de
Publication of EP4450133B1 publication Critical patent/EP4450133B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A62C13/66—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
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/76—Details or accessories
    • 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

Definitions

  • the invention falls within the field of fire safety, and more particularly within the field of water fire extinguishers equipped with floating doses of additives.
  • water fire extinguishers include a water tank, a compressed gas cartridge housed in the tank, a spray nozzle, and a control handle that not only operates the compressed gas cartridge to pressurize the extinguisher's water tank - for example, 5 to 6 bars of pressure, and usually up to 15 or 16 bars - but also controls the opening of the spray nozzle.
  • a surfactant-type additive to the water in the tank.
  • This additive allows foam to form when the water is sprayed, increasing the surface area in contact with the burning elements.
  • fluorocarbons which are known to form a film that floats on the surface of the water.
  • the publication EP0461020 proposes the introduction into the tank of a floating dose of additive comprising an additive reservoir with an open end sealed by a watertight cap.
  • the additive stored in the floating dose does not come into contact with the water or the walls of the fire extinguisher tank.
  • the differential pressure introduced the work causes the lid to tear, thus ensuring the mixing of the additive contained in the floating dose with the water in the reservoir.
  • a cartridge for a fire extinguisher comprising several reservoirs, each containing an additive, at least two of these reservoirs being separated by a common side wall. Each reservoir further comprises a frangible, airtight cap for closing said reservoir containing the additive.
  • frangible seals are subject to the corrosive effect of the additive and can deteriorate over time, losing their sealing properties and potentially causing the additive to mix unexpectedly with the water in the extinguisher's reservoir.
  • the invention also relates to a water fire extinguisher comprising a water reservoir and means for pressurizing said reservoir, which fire extinguisher further comprises a floating dose as described above housed in the reservoir, the external cap sealing the open end of the container of said floating dose being immersed in the water of the reservoir.
  • the invention relates to a floating dose of additive 1 for a water fire extinguisher, such additive 11 conventionally comprising fluorocarbons.
  • a fire extinguisher conventionally comprises a tubular-shaped tank with dome-shaped ends. One end includes an opening allowing the extinguisher tank to be filled with water, as well as the floating dose of additive 1 to be inserted.
  • the reservoir opening is closed by a head to which a pressurized gas cartridge housed within the reservoir is attached, and a dip tube extending the full height of the reservoir.
  • the dip tube passes through the extinguisher head and terminates in a liquid spray nozzle.
  • the extinguisher head also includes a means of releasing the gas from the cartridge into the reservoir, typically a striker operated by a manual lever to pierce the gas cartridge. Once the gas is released into the reservoir, the internal pressure rises from atmospheric pressure to a pressure exceeding 4 bar, that is, at least 5 to 6 bar and preferably around 15 or 16 bar.
  • the floating dose 1 housed in the extinguisher reservoir comprises a longitudinal container 2 extending along an axis X and made of a high-density polyethylene polymer material.
  • This container 2 comprises a cylindrical side wall 13, a bottom wall 14 integral with the side wall, and an open end 3 opposite it with a circular cross-section of radius r.
  • the dose floating 1 further includes a longitudinal handling keel 10 extending from the bottom wall of the container 2, opposite the open end.
  • Container 2 is filled with additive 11, and its open end 3 is hermetically sealed by sealing means 5, 8 to prevent any contact between the additive 11 in the floating dose 1 and the water in the extinguisher reservoir.
  • the volume of additive 11 corresponds to a fraction of the total volume of container 2, typically and without limitation between 75% and 85% of the total volume of container 2, preferably around 80% of the total volume of container 2. This volume fraction of the additive may vary depending on the type of container for the floating dose, the essential point being that a fraction of the container's volume remains filled with compressible gas.
  • the open end 3 of the floating dose container 2 includes a circumferential outer edge 4 in the shape of a collar. Furthermore, the container 2 includes a circumferential inner shoulder 9 formed in the side wall 14 of the container 2. Thus, the inner radius of the container 2 between the bottom 14 of said container 2 and the inner shoulder 9 is less than the radius r of the open end 3.
  • the surface of the inner shoulder 9 and the surface of the outer rim 4 are parallel to each other and perpendicular to the longitudinal axis X of the container 2.
  • the circumferential outer rim 4 is further located at a distance d from the inner shoulder 9.
  • the floating dose 1 includes an inner leak-proof lid 8 housed in the container 2 and heat-sealed against the circumferential inner shoulder 9, these two lids 5, 8 forming the means for sealing the open end 3 of the container 2.
  • the floating dose 1 further includes an outer leak-proof lid 5 heat-sealed against the circumferential outer edge 4. The open end 3 of the container 2 is thus hermetically sealed.
  • the operator manipulates the dose 1 by the keel 10 so that, once inside the extinguisher tank, the opposite end 3 of the container 2 is submerged in the water within the tank. Furthermore, the keel 10 increases the overall length of the container 2, which prevents the floating dose 1 from inverting within the extinguisher tank: the open end 3, hermetically sealed by the internal 8 and external 5 caps, remains below the free surface of the water in the extinguisher tank.
  • the lids 5, 8 are made – for example, but not limited to – of composite material, comprising a first coating layer of polymer material, for example with a surface density of approximately 40 g/ m2 , an intermediate metallic layer – typically an aluminum strip with a thickness of approximately 60 microns – and optionally an external lacquer to protect the metallic layer with a surface density of approximately 1.5 g/ m2 .
  • the invention is obviously not limited to these materials, nor to these values of surface density and thickness.
  • the coating layer is adapted to be heat-sealed to the container 2 of the floating dose 1, either to the outer edge 4 if it is the outer lid 5, or to the inner shoulder 9 if it is the inner lid 8.
  • the metallic layer of the outer lid 5 is therefore intended to be in contact with the water in the extinguisher reservoir, while the coating layer of the inner lid 8 is intended to come into contact with the additive 11 contained in the container 2 of the floating dose 1.
  • the two inner seals 8 and outer seal 5 are also frangible and are designed to tear open when the extinguisher tank is pressurized.
  • each of the seals 5 and 8 is designed to tear open as soon as the differential pressure (i.e., the pressure difference between the inside of the floating dose container 1 (container 2) and the inside of the extinguisher tank) exceeds a predetermined value, typically 4 bar.
  • the internal 8 and external 5 lids each deform initially into a concavity directed towards the inside of the container 2.
  • the concavity 6 of the external lid 5 takes the form of a spherical cap of radius r (identical to the radius of the external opening 3 of the container 2), of radius of curvature R, and of height h.
  • the distance d between the outer circumferential edge 4 and the inner circumferential shoulder 9 is greater than or equal to the rupture depth h r .
  • the rupture depth h r is therefore directly correlated to the radius r of the external opening 3 of the container 2, and the distance d separating the external edge 4 from the internal shoulder 9 of the container 2 therefore also depends on the radius r of the external opening 3 of the container 2.
  • the ratio between the radius r of the open end 3 and the distance d separating the outer edge 4 from the inner shoulder 9 is less than or equal to 10, preferably less than or equal to 5 and again preferably in the order of 4.5.
  • THE figures 2 And 5 represent the floating dose 1 when the extinguisher is in storage condition, i.e. the gas cartridge has not released the gas into the reservoir and the pressure in the reservoir remains identical to the pressure in container 2 of the floating dose 1.
  • the two inner 8 and outer 5 seals are therefore in a state of equilibrium, substantially flat and parallel to each other, and hermetically sealing the open end 3 of container 2.
  • THE figures 3 And 6 represent the floating dose 1 after the extinguisher tank has been pressurized, but before the inner seal 8 and outer seal 5 have been torn open. Seals 5, 8 are therefore shown here in a non-equilibrium state.
  • THE figures 4 And 7 represent the floating dose 1 as soon as the apex 7 of the concavity 6 formed by the deformation of the outer seal 5 reaches the rupture depth h ⁇ sub>r ⁇ /sub> and tears.
  • the rupture depth h ⁇ sub>r ⁇ /sub> of the outer seal 5 is less than or equal to the longitudinal distance d separating the outer edge 4 from the inner shoulder 9 of the container 2.
  • the internal operculum 8 and external operculum 5 are also represented in a non-equilibrium state.
  • the inner lid 8 is then fully subjected to the differential pressure and tears in turn ( figure 8 ).
  • the open end 3 of the container 2 immersed in the water in the extinguisher reservoir, water is drawn into the container 2 through its open end 3 through the tears 12, 15 of the outer lid 5 and the inner lid 8, and the additive 11 contained in the floating dose 1 is mixed very rapidly with the water in the extinguisher.
  • the distance d between the outer circumferential edge 5 and the inner circumferential shoulder 9 may be less than the rupture depth h r of the outer seal 5.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Closures For Containers (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Claims (10)

  1. Schwimmende Additivdosis (1) für einen Wasserfeuerlöscher, umfassend ein Wasserreservoir und Mittel zum Unterdrucksetzen des Wasserreservoirs, wobei die schwimmende Dosis (1) einen länglichen Behälter (2) umfasst, der ein offenes Ende (3) aufweist, das mit einem äußeren umlaufenden Rand (4) versehen ist, und Verschlussmittel des offenen Endes (3), die einen äußeren, dicht verschließbaren und zerbrechbaren Deckel (5) des offenen Endes (3) aufweisen, der fest mit dem äußeren Umfangsrand (4) verbunden ist, dadurch gekennzeichnet, dass die Verschlussmittel ferner einen inneren dichten und zerbrechbaren Deckel (8) umfassen, der in dem Behälter (2) angeordnet ist und der fest mit einer inneren umlaufenden Schulter (9) verbunden ist, die in der Wand des Behälters (2) ausgebildet ist.
  2. Schwimmende Dosis nach vorherigem Anspruch, dadurch gekennzeichnet, dass der äußere Deckel (5) unter einem Differenzdruck, der durch das Unterdrucksetzen des Reservoirs des Feuerlöschers verursacht wird, eine Konkavität (6) in dem Behälter ausbildet, die reißt, wenn der Längsabstand (h) zwischen dem äußeren Umfangsrand (4) und dem Boden der Konkavität (7) eine bestimmte Bruchtiefe (hr) erreicht, und dass der Mindestabstand (d), der den äußeren Umfangsrand (5) von der inneren umlaufenden Schulter (9) trennt, größer oder gleich der Bruchtiefe (hr) des äußeren Deckels (5) ist.
  3. Schwimmende Dosis (1) nach vorherigem Anspruch, dadurch gekennzeichnet, dass das offene Ende (3) des Behälters (2) im Querschnitt eine kreisförmige Form mit dem Radius r aufweist, dass die Konkavität (6) die Form einer Kugelkalotte mit dem gleichen Radius r wie das offene Ende (3) des Behälters (2) aufweist, mit der Krümmung R und der Höhe h = R +/- (R2 - r2)1/2, und dass die Bruchtiefe (hr) mit dem Radius r des offenen Endes (3) des Behälters (2) korreliert.
  4. Schwimmende Dosis (1) nach vorherigem Anspruch, dadurch gekennzeichnet, dass das Verhältnis zwischen dem Radius r des offenen Endes (3) des Behälters (2) und dem Abstand d zwischen dem Außenrand (4) und der inneren Schulter (9) des Behälters (2) kleiner oder gleich 10, vorzugsweise kleiner oder gleich 5 ist und noch bevorzugter in der Größenordnung von 4,5 liegt.
  5. Schwimmende Dosis (1) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Abstand d zwischen dem Außenrand (4) und der inneren Schulter (9) des Behälters (2) größer oder gleich 4,5 mm ist.
  6. Schwimmende Dosis (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der innere Deckel (8) und der äußere Deckel (5) jeweils gegen die innere umlaufende Schulter (9) und den äußeren umlaufenden Rand (4) thermisch versiegelt sind.
  7. Schwimmende Dosis (1) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass sie einen Bedienkegel (10) aufweist, der an einem gegenüberliegenden Ende des Behälters (2) ausgebildet ist.
  8. Schwimmende Dosis (1) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Additiv (11) höchstens 90 % des Gesamtvolumens des Behälters (2) ausmacht.
  9. Wasserfeuerlöscher, umfassend ein Wasserreservoir und Mitteln zum Unterdrucksetzen des Reservoirs, dadurch gekennzeichnet, dass er ferner eine schwimmende Dosis (1) nach einem der vorstehenden Ansprüche umfasst, die in dem Reservoir untergebracht ist, und dass der äußere Deckel (5) in das Wasser des Reservoirs eingetaucht ist.
  10. Feuerlöscher nach vorherigem Anspruch, dadurch gekennzeichnet, dass die Druckdifferenz zwischen dem Reservoir und dem Behälter (2) der schwimmenden Dosis (1) nach dem Unterdrucksetzen des Reservoirs mindestens 4 bar beträgt.
EP23315493.9A 2023-12-27 2023-12-27 Schwimmende additivdosierung für einen wasserlöscher Active EP4450133B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23315493.9A EP4450133B1 (de) 2023-12-27 2023-12-27 Schwimmende additivdosierung für einen wasserlöscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23315493.9A EP4450133B1 (de) 2023-12-27 2023-12-27 Schwimmende additivdosierung für einen wasserlöscher

Publications (3)

Publication Number Publication Date
EP4450133A1 EP4450133A1 (de) 2024-10-23
EP4450133C0 EP4450133C0 (de) 2026-01-21
EP4450133B1 true EP4450133B1 (de) 2026-01-21

Family

ID=89722896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23315493.9A Active EP4450133B1 (de) 2023-12-27 2023-12-27 Schwimmende additivdosierung für einen wasserlöscher

Country Status (1)

Country Link
EP (1) EP4450133B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662608B1 (fr) 1990-06-05 1992-09-11 Rot Cartouche frangible pour additifs d'extinction dans des extincteurs a eau mise sous pression au moment de l'emploi par un gaz comprime.
DE10231740B3 (de) * 2002-07-13 2004-04-08 Bundesrepublik Deutschland, vertreten durch das Bundesministerium der Verteidigung, dieses vertreten durch das Bundesamt für Wehrtechnik und Beschaffung Handfeuerlöscher
BE1019473A3 (fr) * 2010-09-06 2012-07-03 Certech Asbl Extincteur a reservoirs pour additifs.
FR3063651B1 (fr) * 2017-03-07 2019-07-05 Rot Flacon d'additifs pour extincteur a base d'eau

Also Published As

Publication number Publication date
EP4450133C0 (de) 2026-01-21
EP4450133A1 (de) 2024-10-23

Similar Documents

Publication Publication Date Title
EP0475789A1 (de) Vorrichtung zur getrennten Aufbewahrung wenigstens zweier Produkte und zum Mischen derselben beim ersten Gebrauch
CH627709A5 (fr) Dispositif pour distribuer un liquide sous forme finement divisee.
CA2367515C (fr) Dispositif de protection d'un recipient et recipient equipe de ce dispositif
EP0916597A1 (de) Aufbewahrungs- und Spendevorrichtung für ein flüssiges Produkt
EP4450133B1 (de) Schwimmende additivdosierung für einen wasserlöscher
EP3148869B1 (de) Vorrichtung zum abdichten einer öffnung in eine wand
EP0461020B1 (de) Zerbrechliche Patrone für Feuerlöschzusatzstoffe in Wasserfeuerlöschern, die auf Gebrauchsmomente durch ein Gas unter Druck gesetzt werden
EP4420740B1 (de) Verbesserter feuerlöscher zur dispersion eines fluorfreien löschmittels
FR2557544A1 (fr) Procede et dispositif pour la protection de substances perissables contenues dans des recipients contre l'influence de gaz nocifs, par exemple l'air de l'atmosphere
WO2002096645A1 (fr) Joint multicouche, bouchon ou col de recipient comprenant un tel joint, et procedes de realisation
EP0390711B1 (de) Druckfluidumbehälter
EP2151264B1 (de) Feuerlöscher mit zerreissbarer Membran
EP0211703B1 (de) Verschlussstopfen für eine Feststofftreibladung mit zwei Kammern
EP1412263B1 (de) Flexible patrone für flüssigkeiten
EP0792665B1 (de) Flüssigkeitszerstäubungsfeuerlöscher
FR3099063A1 (fr) Extincteur pyrotechnique pour véhicule
FR3028269A1 (fr) Dispositif d'ecremage d'un fluide de surface
EP4126692B1 (de) Verschluss geeignet um eine flüssigkeit zu enthalten
BE386526A (de)
FR3024841A1 (fr) Citerne a double paroi pour le stockage de produits chimiques liquides.
EP4149851B1 (de) Metalldose mit einem metalldosenkörper und einem metalldeckel, die durch eine abziehbare lasche miteinander verbunden sind
WO2019048363A1 (fr) Récipient destiné à comprendre un produit liquide et équipé d'au moins un clapet anti-retour en particulier pour un navire de transport de gaz liquefie
FR2846699A1 (fr) Dispositif pyrotechnique de dispersion d'un fluide liquide destine a la denaturation de valeurs, utilisant une piece a profil contondant
FR3153600A1 (fr) Tube monomateriau equipe d'une tete de tube presentant une forme ovale
FR3035602A1 (fr) Dispositif de liberation rapide de composants

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

P01 Opt-out of the competence of the unified patent court (upc) registered

Free format text: CASE NUMBER: APP_64040/2024

Effective date: 20241203

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250409

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: A62C 13/66 20060101AFI20250717BHEP

Ipc: A62C 13/76 20060101ALI20250717BHEP

Ipc: A62C 5/00 20060101ALI20250717BHEP

INTG Intention to grant announced

Effective date: 20250811

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TF FRANCE

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: F10

Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE)

Effective date: 20260121

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

U01 Request for unitary effect filed

Effective date: 20260127

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT RO SE SI

Effective date: 20260202

P04 Withdrawal of opt-out of the competence of the unified patent court (upc) registered

Free format text: CASE NUMBER: APP_64040_1/2024

Effective date: 20260202

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20260400534

Country of ref document: GR

Effective date: 20260407