WO2012025623A1 - Valve head for a fire extinguisher, and use thereof - Google Patents

Valve head for a fire extinguisher, and use thereof Download PDF

Info

Publication number
WO2012025623A1
WO2012025623A1 PCT/EP2011/064754 EP2011064754W WO2012025623A1 WO 2012025623 A1 WO2012025623 A1 WO 2012025623A1 EP 2011064754 W EP2011064754 W EP 2011064754W WO 2012025623 A1 WO2012025623 A1 WO 2012025623A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve body
safety cam
cam
extinguisher
channel
Prior art date
Application number
PCT/EP2011/064754
Other languages
French (fr)
Inventor
Jean-Charles Wibo
Original Assignee
Delta Extinctors S.A.
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 Delta Extinctors S.A. filed Critical Delta Extinctors S.A.
Publication of WO2012025623A1 publication Critical patent/WO2012025623A1/en

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
    • A62C13/72—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers characterised by releasing means operating essentially simultaneously on both containers
    • A62C13/74—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers characterised by releasing means operating essentially simultaneously on both containers the pressure gas container being pierced or broken

Definitions

  • the present invention relates to an auxiliary pressure fire extinguisher valve head and its use on a fire extinguisher body and its use for the extinguishing of a fire.
  • a fire extinguisher contains an extinguishing agent capable of extinguishing flames, which can be projected on a fire by the action of internal pressure.
  • This pressure can be provided by a permanent pre-pressure (permanent pressure system) or by the release of an auxiliary gas (very often carbon dioxide) contained in a cartridge (auxiliary pressure system).
  • auxiliary pressure extinguishers consist essentially of an enclosed tank (body) having an upper wall which has an opening whose contour has a generally circular shape, a generally cylindrical tube assembly, and a head (valve ) fire extinguisher.
  • These three elements, namely the reservoir, the plunger assembly and the extinguisher head are usually assembled by engaging the upper portion of the plunger assembly internally provided with a female thread into the opening of the plunger tube assembly. the upper wall of the tank, and then screwing into the female thread of the tube assembly the extinguisher head which has for this purpose a cylindrical lower portion externally provided with a male thread.
  • the body of the extinguisher is usually intended to contain the extinguishing agent.
  • the plunger tube assembly usually contains a compressed gas cartridge adapted to propel the extinguishing agent into the body through passages formed in the plunger tube assembly and the extinguisher head, and to project said extinguishing agent towards flames to extinguish, through an exit port of the extinguisher head, when the fire extinguisher is activated.
  • Activation of the fire extinguisher is usually carried out by operating an operating lever pivotally mounted on the extinguisher head.
  • This lever When this lever is actuated, it acts on an element that pushes the compressed gas cartridge on a perforator that perforates the cartridge to release the gas and cause the expulsion of the extinguishing agent.
  • This operation is made possible only if a locking pin of said presser lever has been previously pulled.
  • the implementation of these fire extinguishers was not always easy, especially when the user is in a feverish situation in case of fire. Indeed, the tearing of the safety pin which passes through the pressure lever, requires, because of the shear effect, a certain strength and is not very easy because the device can be maintained inclined and n is not at the user's hand.
  • the present invention aims to solve at least one of these problems.
  • the object of the present invention is to improve the operation of a fire extinguisher valve head, preferably an auxiliary pressure extinguisher.
  • the invention aims to improve the operation of a fire extinguisher head by optimizing the percussion system (perforation) of the propellant cartridge. Summary of the invention
  • the invention relates to a fire extinguisher head (also named after valve head) for fire extinguishing apparatus, and preferably for auxiliary pressure fire extinguisher.
  • a valve body comprising (mainly) a central channel (bore) for receiving a rod, and a lateral channel (bore) (perpendicular to the central channel) constituting a drain channel of an extinguishing agent,
  • a safety cam removably and slidably mounted on the top / top of the valve body, completely covering said control lever
  • said cam being formed in one piece and having on a front face (or front wall) a seal integral with said workpiece and which can be torn off when the safety cam is extracted, said safety cam including a upper wall (face) provided at its center with a sliding ramp located on the underside of said upper wall, said sliding ramp for the tilting of the lever during the pulling of the safety cam.
  • the present invention has the advantage of reducing the pulling force of the safety cam (or cap) in order to facilitate percussion by the user and to improve the values imposed by the EN3 - 6/7 standard (applicable for Portable fire extinguishers).
  • the present invention has the advantage of giving more comfort to the user by allowing it to be put into operation either by a finger or by the hand (take trigger type colt).
  • the present invention has the advantage of completely protecting and covering the lever from any accidental operation.
  • the present invention also has the advantage of increasing the effectiveness of the seal.
  • the present invention also has the advantage of reducing the volume of the head or valve extinguisher.
  • the present invention also has the advantage of reducing the parasitic noise of the head or valve of the extinguisher placed in moving vehicles.
  • the present invention also has the advantage of reducing the number of parts of the head or valve extinguisher to reduce production costs and assembly.
  • valve head is characterized in that the top or top of the valve body is provided with longitudinal grooves (on two lateral parts of said body) located on either side of the control lever (perpendicularly to the axis of rotation of the control lever), the grooves serving as a slideway to said safety cam
  • valve head is characterized in that the longitudinal portions of the base of the safety cam are shaped in the form of rails provided for sliding of the safety cam in the grooves of the valve body.
  • the valve head is characterized in that the part of the safety cam opposite to the outlet passage of the extinguishing agent is provided with an opening acting as a catch for the traction of the cam of security (eg allowing the passage of at least one finger).
  • the valve head is characterized in that the valve body comprises on the top of its front face a housing (or groove) capable of receiving the lower portion of the seal of the safety cam.
  • valve head is characterized in that the valve body comprises on the part opposite the emptying channel an opening (for example to allow the passage of at least one finger) acting as maintaining the fire extinguisher.
  • valve head is characterized in that the safety cam comprises two side walls on either side of the upper wall, said side walls and upper having an arrow indicating the direction of traction.
  • the invention also relates to the use or application of a valve head according to the present invention for an extinguisher, preferably for an auxiliary pressure extinguisher.
  • the invention also relates to a fire extinguisher apparatus comprising a fire extinguisher head according to the present invention.
  • the apparatus comprises
  • a central tube provided inside said body, in which is placed a pressure cartridge containing a propellant.
  • the apparatus is characterized in that said extinguisher head comprises:
  • valve body mainly comprising a central channel (bore) for receiving a rod, and a lateral channel (bore) (perpendicular to the central channel) constituting a drain channel for the extinguishing agent,
  • a rod mounted in said central channel of the valve body, and controlling the opening and closing of said drain channel
  • a safety cam (safety cover, safety cover) removably and slidably mounted on the top / top of the valve body, completely covering said control lever, said cam being formed in one piece and having on one face (wall) before, a seal integral with said workpiece and which can be torn off when the safety cam is extracted, said safety cam including a wall (Upper face) provided in its center with a sliding ramp located on the lower face of said upper wall said sliding ramp for tilting of the lever during the traction of the safety cam.
  • the apparatus is characterized in that said upper centralizer is composed of a cylindrical chamber at the base of which is mounted a holding ring containing openings for the passage of the extinguishing agent.
  • the apparatus is characterized in that said rod comprises:
  • the apparatus is characterized in that said body comprises a lower centralizer, provided inside said tube, provided with one or more diffusers passing through the transverse wall of said tube and for expelling the gas propellant contained in said cartridge directly in the extinguishing agent.
  • the apparatus may comprise one or more diffusers passing through the transverse wall of said tube, for example at least 1 diffuser, at least 2, at least 3 or at least 4 diffusers or more.
  • the apparatus comprises 1 or 2, or 3, or 4 diffusers, more preferably 2 diffusers.
  • the apparatus is characterized in that the end (s) of the at least one diffuser are housed in one or more cells formed by a deflector (s) located on the outer wall of said tube.
  • the apparatus is characterized in that the cartridge is essentially cylindrical and provided with a neck containing a cover provided for the perforation of the cartridge.
  • the apparatus is characterized in that the cartridge is placed upside down in said central tube with its neck and its lid oriented towards the base of the body.
  • the apparatus is characterized in that the central tube is divided into an upper part and a lower part whose outer diameter is smaller than the outer diameter of the upper part of said tube.
  • the cartridge is mounted within the upper portion of said central tube, and the outer diameter of said cartridge is smaller than the inner diameter of said upper portion of the tube, so that a circumferential gap is created between said cartridge and the upper part of said tube.
  • said lower centralizer is provided in the upper part of said central tube at the neck of said cartridge.
  • the one or more diffusers of the propellant gas may be provided at a height between the lower half height and the third lower quarter of the internal height of said body.
  • the one or more diffusers are directed downwards and pass from the inside of the central tube towards the heart of the mass of powder.
  • said lower centralizer is composed of a cylindrical chamber containing a piston assembly which is mounted, preferably by clipping, on the cartridge.
  • said piston assembly comprises:
  • a lower spring placed in the center of the piston bearing on the bottom of said lower center, for controlling the position of the piston assembly.
  • the invention relates to a fire extinguishing process in which preferably an extinguisher apparatus according to the invention is implemented.
  • the present fire extinguishing method using an extinguisher apparatus comprising a body containing a fire extinguishing powder extinguishing agent, a fire extinguisher valve head according to the invention attached to said body and a central tube provided therein body, in which is placed a pressure cartridge containing a propellant, said method comprising a pressurization of the extinguisher and the emptying of the extinguishing agent, is preferably characterized in that the pressurization comprises the following steps of:
  • the pressurization of said extinguisher and the emptying of the extinguishing agent are carried out simultaneously. According to another embodiment, the pressurization of said extinguisher and the emptying of the extinguishing agent are carried out consecutively.
  • Figure 1 shows a schematic sectional view in the plane of symmetry of a fire extinguisher apparatus according to a particular embodiment of the invention before use.
  • Fig. 2 shows the extinguisher apparatus of Fig. 1, in which the seal of the safety cam is broken.
  • FIG. 3 represents the extinguishing apparatus of FIG. 1, in which the safety cam is removed, causing the lever of the extinguisher head to tilt and thus the percussion of the cartridge thus releasing the propellant gas into the body the homogenization of the propellant and extinguishing agent is carried out in the body of the apparatus.
  • Figure 4 shows the extinguisher apparatus of Figure 1, wherein the homogenization of the propellant and the extinguishing agent is in the body of the apparatus, putting the apparatus under pressure.
  • Figure 5 shows the emptying of the extinguisher apparatus of Figure 1, by actuating the lever of the extinguisher head.
  • An auxiliary pressure type fire extinguisher generally consists of a body, preferably a metal cylinder, a valve (also known as a fire extinguisher head, valve head, or shut-off valve), a central tube, and a propellant cartridge.
  • Portable fire extinguishers are equipped with a handle to carry the fire extinguisher and to strike the cartridge.
  • extinguisher is synonymous with the term "fire extinguisher”.
  • the present invention aims to improve the operation of the fire extinguisher valves by optimizing the percussion system (perforation) of the propellant cartridge.
  • fire extinguisher valve is synonymous with “fire extinguisher head”, or “valve head” or “fire extinguisher shutoff valve”.
  • the extinguisher valve head has been improved by providing a one-piece safety cam in which a slip ramp is formed, and which includes a tamper-evident seal integral with the safety cam.
  • safety cam is synonymous with “security cache” or “security cap”.
  • the percussion of the cartridge is carried out by simple pulling on the safety cam.
  • the sliding ramp of the safety cam pivots the lever of the valve body about its axis and simultaneously, by this same action, breaks the seal.
  • the action on the rod (drawer) contained in the valve body induces the perforation of the cartridge. This perforation releases the propellant gas into the bottle.
  • FIG. 1 an extinguisher 2 according to a particular embodiment of the present invention is illustrated.
  • Figures 2, 3 and 4, and 5 show schematically the operation of an apparatus 2 according to a particular embodiment of the present invention.
  • the basic elements of extinguisher 2 comprise:
  • a bottle 17, also called “body” in the present invention which bottle is a container or tank, generally cylindrical, metal or plastic, intended to be pressurized internally and provided with the welded portions.
  • a valve head 1 also referred to as a "shut-off valve” or “extinguisher head” in the present invention, which fulfills several functions. Initially it serves as a closure cap of the bottle 17. Then it allows the perforation of the cartridge 20 of propellant 21. Finally, it allows the extinguishing agent 18 to be emptied at one time or intermittently.
  • an extinguishing agent 18 which is an assembly of the product or products contained in extinguisher 2 and whose action causes extinction.
  • the nature of the extinguishing agent used depends on the most likely fire class in the area of use of the appliance.
  • the main extinguishing agents that can be used in the present invention are as follows. In parentheses, the classes on which they can be used: water spray (A); water spray with additive (emulsifier) (AB); powders ABC (ABC); BC (BC) powders; carbon dioxide (BC) or powders D (D).
  • the extinguishing agent is an ABC type powder.
  • a cartridge 20 which comprises a metal container under pressure containing a propellant 21, for example CO 2 .
  • the neck 32 of the cartridge 20 contains the seal 33 provided for perforation
  • a striker 34 preferably made of steel, it can be hollow and split along its entire length and is used for perforation of the propellant cartridge 21. An end is beveled to facilitate perforation.
  • a central tube 19 for driving the mixture of the extinguishing agent 18 and the propellant 21 to the head of the apparatus 1 and thus to the outside.
  • the valve head 1 is composed of the valve body 3 comprising a control lever 7, a spool or rod 5 and an upper centering device 22. This assembly is covered with a safety cap or cam 9 in which a seal 1 1 is incorporated.
  • the valve body 3 is designed to receive all the elements making up the valve 1.
  • the valve body 3 mainly comprises a central channel (bore) 4 intended to receive the rod (or slide) 5 and the upper centering device 22, and another channel (bore) 6 generally perpendicular to the first for the exit passage of the extinguishing agent 18.
  • This channel 6 is also called drain channel or outlet channel 6 extinguishing agent.
  • the valve body 3, in this case, is fixed to the bottle 17 by screwing and the sealing of these two parts is provided by an o-ring type head gasket 35.
  • Two holes 36 located on either side of the lateral parts of the valve body 3 are intended to receive the journals 8 of a control lever 7.
  • valve body 3 At the top of the valve body 3 is formed a longitudinal groove on each lateral portion serving as slideway 55 to the safety cap or cam 9.
  • a housing 15 at the top of the front face of the valve body 3 is provided to receive the lower part of the seal 11.
  • an opening 16 for the passage of a finger for the grip of the fire extinguisher On the rear part of the valve body 3, opposite the outlet channel 6 of the extinguishing agent, is an opening 16 for the passage of a finger for the grip of the fire extinguisher.
  • the apparatus according to the present invention also contains a lever 7.
  • the lever 7 is provided on either side with pins 8 serving as an axis of rotation.
  • the action of the lever 7 makes it possible firstly to pressurize the extinguisher by perforation of the cartridge 20 during the extraction of the cap or safety cam 9, and then this same action allows the expulsion in one blow or intermittently the extinguishing agent 18.
  • a groove is preformed on the upper surface of the lever 7 to allow the guide of the ramp 13 of the cam 9.
  • the fire extinguisher valve head 1 comprises a security which caps it.
  • the security called here cap or cam 9 is intended to protect any action on the lever 7; the seal 11, located on the front face 10 of the cam 9 is an integral part.
  • a rail 38 (see FIG. 3 and 4) provided for sliding, in the grooves of the valve body 3, of the cam 9 during the extraction of the -this.
  • an opening 14 allowing the passage of a finger provided for its extraction by sliding.
  • the ergonomic shape of the cam allows a complete grip in order to allow a second possibility of extraction by sliding (trigger type colt).
  • the two lateral faces and the upper face may have an arrow indicating the direction of traction.
  • the tamperproof seal 11, which is an integral part of the cam or safety cap 9, is a control element that makes it possible to instantly visualize whether the extinguisher has been used or not.
  • This element 11 can be removed or removed only part of rupture thereof. It is fractured during the extraction of the cam or safety cap 9 ( Figure 2).
  • the rod or drawer 5 is the central element of the valve 1.
  • the rod 5 consists of a body, three O-ring type seals, 29, 30, 31, and a return spring 28.
  • the seal upper 29 seals the central channel 4 beyond the outlet channel 6 of the extinguishing agent.
  • the central seal 30 seals in front of this outlet channel 6.
  • the lower seal 31 seals the chamber containing the return spring 28.
  • the action on the control lever 7 allows the movement of the rod 5 in the central channel 4. This displacement of the rod 5 releases the central seal 30 from its housing and allows the expulsion of the extinguishing agent 18 through the emptying channel 6.
  • the return spring 28 allows the rod 5 to resume its initial position as soon as the action on the lever 7 is canceled.
  • the upper centralizer 22 is composed of a chamber and a retaining ring 27.
  • the chamber of the upper centralizer is intended to receive the return spring 28 of the rod 5.
  • the retaining ring 27 serves as support for this purpose. return spring 28, and centering of the rod 5 with respect to the central channel 4.
  • This ring 27 comprises openings (or holes) 39 for the passage of the extinguishing agent 18.
  • the lower or internal part of the apparatus comprises a bottle 17 having a cylindrical wall and a bottom 40 of curved shape.
  • the bottle 17 comprises a tube 19 in which is placed a lower centralizer 23, a piston assembly 45 and the cartridge 20 of propellant gas 21.
  • the upper part 41 and the lower part 42 of the tube 19 are connected by a transverse wall 56 provided with one or more openings 43 (two are shown in Figures 1 to 5).
  • the central tube 19 is intended to lead the extinguishing agent 18 to the emptying channel 6. Equipped with its various components, it is threadedly connected to the valve body 3. Guide and retaining grooves are provided for the assembly and the maintenance of its different constituents.
  • the central tube 19 is divided into an upper portion 41 and a lower portion 42 whose outer diameter is smaller than the outer diameter of the upper portion 41 of said tube 19.
  • a lower centralizer 23 which is composed of a cylindrical chamber 44 from which emerges (is profiled) one or more outlets 24 (two are shown in Figures 1 to 5) for directing the propellant 21.
  • This or these outlets 24, called “ejector” or “diffuser” through the transverse wall 56 of the tube 19 at the openings 43, to expel the propellant gas 21 directly into the mass of the extinguishing agent 18.
  • one or more deflectors 26 creating one or more cells 25 in direct communication with the opening or openings 43.
  • This or these deflectors 26 forming this or these cells 25, in which are housed or the diffusers 24 of said lower centralizer 23 are profiled downwards in their inner parts at an angle of at least 30 ° to the horizontal.
  • This or these deflectors 26 serve to direct the propellant gas 21 in the bottle 17 during the perforation of the cartridge 20 to this extent, thus enabling the extinguishing agent 18 contained in said bottle 17 to be effectively de-packed.
  • the lower centralizer 23 is composed of a circular wall and a transverse wall forming a cylindrical chamber 44 for receiving the piston assembly 45.
  • the piston assembly is composed of a piston 45, an o-ring type seal 47, a holding spring 46, a striker 34, the assembly being mounted on the neck 32 of the cartridge 20 of propellant 21.
  • a first step, illustrated in Figure 2 is to extract (arrow 48) the safety cap or cam 9 out of the valve body 3 by firmly holding the device 2 and performing a fast and energetic traction on safety 9, until complete extraction.
  • This extraction made by sliding perpendicularly to the fire extinguisher 2, automatically causes the rupture of the tamper-proof seal 11.
  • the safety cam 9, thanks to the sliding ramp 13, causes the lever 7 to tilt completely and then to release.
  • the gas 21 contained in the cartridge 20 is violently expelled into the mass of the extinguishing agent 18 by the diffuser (s) 24.
  • FIG. 5 shows the emptying of the fire extinguisher 2.
  • a manual thrust illustrated by the arrow 51 on the control lever 7 again causes the rod 5 to move and instantly allows the extinguishing agent 18 to be emptied, as illustrated by the curves and arrows 52, 53 and 54.
  • the return spring 28 resets the rod 5 in its initial position as soon as the thrust on the control lever 7 is released.
  • the emptying channel 6 is thus again obstructed.
  • the description given above relates to a fire extinguisher and its activation in "two" shots.
  • the pressurization of the fire extinguisher is achieved by a first action on the control lever; this must be done automatically when you retrieve the security.
  • a second action on the lever allows the extinguishing agent to be drained.
  • the devices of the present invention are therefore made in accordance with the EN3 standard for the manufacture of fire extinguishers.
  • the present invention also relates to the use of a valve head according to the invention in a fire extinguisher apparatus.
  • the present invention relates to also to the use of a fire extinguisher apparatus, preferably of the auxiliary pressure type for extinguishing a fire.
  • An apparatus according to the invention can for example be used in the automotive sector, the professional fire sector, or the domestic sector.

Landscapes

  • 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

The present invention relates to a valve head for an extinguisher, characterized in that said valve head includes: a valve body comprising a central channel for receiving a stem and a side channel forming a channel for discharging an extinguishing agent; a control lever connected to the valve body by means of journals; and a safety cam mounted removably and slidably on top of the valve body so as to cover the control lever completely. The cam is formed as a single piece and a front surface thereof is provided with a seal integrally formed with said piece. In addition, the safety cam includes an upper wall provided, at the center thereof, with a slip ramp on the lower surface of said upper wall, said slip ramp allowing the lever to pivot when the safety cam is pulled.

Description

Tête de vanne d'extincteur d'incendie et son utilisation Domaine technique de l'invention  Fire extinguisher valve head and its use Technical field of the invention
La présente invention se rapporte à une tête de vanne d'extincteur à pression auxiliaire et à son utilisation sur un corps d'extincteur et à son utilisation pour l'extinction d'un incendie.  The present invention relates to an auxiliary pressure fire extinguisher valve head and its use on a fire extinguisher body and its use for the extinguishing of a fire.
Arrière plan technologique de l'invention  Technological background of the invention
Un extincteur contient un agent extincteur apte à éteindre des flammes, qui peut être projeté sur un feu par l'action d'une pression interne. Cette pression peut être fournie par une pression préalable permanente (système à pression permanente) ou par la libération d'un gaz auxiliaire (très souvent du dioxyde de carbone) contenu dans une cartouche (système à pression auxiliaire).  A fire extinguisher contains an extinguishing agent capable of extinguishing flames, which can be projected on a fire by the action of internal pressure. This pressure can be provided by a permanent pre-pressure (permanent pressure system) or by the release of an auxiliary gas (very often carbon dioxide) contained in a cartridge (auxiliary pressure system).
Les extincteurs à pression auxiliaire connus sont essentiellement constitués d'un réservoir clos (corps) ayant une paroi supérieure qui présente une ouverture dont le contour a une forme générale circulaire, un ensemble à tube plongeur, de forme générale cylindrique, et une tête (vanne) d'extincteur. Ces trois éléments, à savoir le réservoir, l'ensemble à tube plongeur et la tête d'extincteur sont usuellement assemblés en engageant la partie supérieure de l'ensemble à tube plongeur, pourvue intérieurement d'un filetage femelle, dans l'ouverture de la paroi supérieure du réservoir, et en vissant ensuite dans le filetage femelle de l'ensemble à tube plongeur la tête d'extincteur qui présente à cet effet une partie inférieure cylindrique munie extérieurement d'un filetage mâle.  Known auxiliary pressure extinguishers consist essentially of an enclosed tank (body) having an upper wall which has an opening whose contour has a generally circular shape, a generally cylindrical tube assembly, and a head (valve ) fire extinguisher. These three elements, namely the reservoir, the plunger assembly and the extinguisher head are usually assembled by engaging the upper portion of the plunger assembly internally provided with a female thread into the opening of the plunger tube assembly. the upper wall of the tank, and then screwing into the female thread of the tube assembly the extinguisher head which has for this purpose a cylindrical lower portion externally provided with a male thread.
Le corps de l'extincteur est usuellement destiné à contenir l'agent extincteur. L'ensemble à tube plongeur contient usuellement une cartouche de gaz comprimé apte à propulser l'agent extincteur dans le corps à travers des passages formés dans l'ensemble à tube plongeur et dans la tête d'extincteur, et à projeter ledit agent extincteur vers des flammes à éteindre, à travers un orifice de sortie de la tête d'extincteur, lorsque l'extincteur est activé.  The body of the extinguisher is usually intended to contain the extinguishing agent. The plunger tube assembly usually contains a compressed gas cartridge adapted to propel the extinguishing agent into the body through passages formed in the plunger tube assembly and the extinguisher head, and to project said extinguishing agent towards flames to extinguish, through an exit port of the extinguisher head, when the fire extinguisher is activated.
L'activation de l'extincteur est usuellement effectuée en actionnant un levier de manœuvre monté pivotant sur la tête d'extincteur. Lorsque ce levier est actionné, il agit sur un élément qui pousse la cartouche de gaz comprimé sur un perforateur qui perfore la cartouche afin de libérer le gaz et de provoquer l'expulsion de l'agent extincteur. Cette opération n'est rendue possible que si on a au préalable tiré sur une goupille de verrouillage dudit levier presseur. La mise en œuvre de ces extincteurs n'était pas toujours aisée, surtout quand l'utilisateur se trouve dans une situation de fébrilité en cas d'incendie. En effet, l'arrachage de la goupille de sécurité qui traverse le levier presseur, exige, du fait de l'effet de cisaillement, une certaine force et ne se fait pas très facilement du fait que l'appareil peut être maintenu incliné et n'est pas à la main de l'utilisateur. Il faut ensuite exercer une pression également assez forte pour manœuvrer le levier pour activer l'extincteur ce qui est plus difficile si le réservoir n'est pas en appui au sol. Les extincteurs connus présentent également un certain nombre d'autres inconvénients comme la fragilité de la tête d'extincteur non protégée contre les chocs. Activation of the fire extinguisher is usually carried out by operating an operating lever pivotally mounted on the extinguisher head. When this lever is actuated, it acts on an element that pushes the compressed gas cartridge on a perforator that perforates the cartridge to release the gas and cause the expulsion of the extinguishing agent. This operation is made possible only if a locking pin of said presser lever has been previously pulled. The implementation of these fire extinguishers was not always easy, especially when the user is in a feverish situation in case of fire. Indeed, the tearing of the safety pin which passes through the pressure lever, requires, because of the shear effect, a certain strength and is not very easy because the device can be maintained inclined and n is not at the user's hand. It is then necessary to exert a pressure also strong enough to maneuver the lever to activate the extinguisher which is more difficult if the tank is not in support on the ground. Known fire extinguishers also have a number of other disadvantages, such as the fragility of the non-impact-protected fire extinguisher head.
La présente invention a pour but de résoudre au moins un de ces problèmes. En particulier, la présente invention a pour objet d'améliorer le fonctionnement d'une tête de vanne d'extincteur d'incendie, de préférence d'extincteur à pression auxiliaire. En particulier, l'invention a pour but d'améliorer le fonctionnement d'une tête d'extincteur par optimalisation du système de percussion (perforation) de la cartouche de gaz propulseur. Sommaire de l'invention The present invention aims to solve at least one of these problems. In particular, the object of the present invention is to improve the operation of a fire extinguisher valve head, preferably an auxiliary pressure extinguisher. In particular, the invention aims to improve the operation of a fire extinguisher head by optimizing the percussion system (perforation) of the propellant cartridge. Summary of the invention
Dans un premier aspect, l'invention concerne une tête d'extincteur (aussi nommée ci après tête de vanne) pour appareil extincteur d'incendie, et de préférence pour extincteur à pression auxiliaire.  In a first aspect, the invention relates to a fire extinguisher head (also named after valve head) for fire extinguishing apparatus, and preferably for auxiliary pressure fire extinguisher.
La présente invention concerne en particulier une tête pour extincteur caractérisée en ce qu'elle comprend :  The present invention relates in particular to a fire extinguisher head characterized in that it comprises:
un corps de vanne comprenant (principalement) un canal (alésage) central destiné à recevoir une tige, et un canal (alésage) latéral (perpendiculaire au canal central) constituant un canal de vidange d'un agent extincteur, a valve body comprising (mainly) a central channel (bore) for receiving a rod, and a lateral channel (bore) (perpendicular to the central channel) constituting a drain channel of an extinguishing agent,
un levier de commande relié audit corps de vanne par des tourillons, et a control lever connected to said valve body by journals, and
une came de sécurité montée de façon amovible et coulissante sur le dessus/sommet du corps de vanne, recouvrant complètement ledit levier de commande, a safety cam removably and slidably mounted on the top / top of the valve body, completely covering said control lever,
ladite came étant formée d'une seule pièce et comportant sur une face avant (ou paroi avant) un scellé faisant partie intégrante de ladite pièce et qui est susceptible d'être arraché lorsque la came de sécurité est extraite, ladite came de sécurité comprenant une paroi (face) supérieure pourvue en son centre d'une rampe de glissement localisée sur la face inférieure de ladite paroi supérieure, ladite rampe de glissement permettant le basculement du levier lors de la traction de la came de sécurité . La présente invention a pour avantage de diminuer la force de traction de la came (ou coiffe) de sécurité afin de faciliter la percussion par l'utilisateur et améliorer les valeurs imposées par la norme EN3 - 6/7 (d'application pour les « Extincteurs d'incendie portatifs). said cam being formed in one piece and having on a front face (or front wall) a seal integral with said workpiece and which can be torn off when the safety cam is extracted, said safety cam including a upper wall (face) provided at its center with a sliding ramp located on the underside of said upper wall, said sliding ramp for the tilting of the lever during the pulling of the safety cam. The present invention has the advantage of reducing the pulling force of the safety cam (or cap) in order to facilitate percussion by the user and to improve the values imposed by the EN3 - 6/7 standard (applicable for Portable fire extinguishers).
La présente invention a pour avantage de donner plus de confort à l'utilisateur en lui permettant la mise en fonctionnement soit par un doigt, soit par la main (prise de type gâchette colt). The present invention has the advantage of giving more comfort to the user by allowing it to be put into operation either by a finger or by the hand (take trigger type colt).
La présente invention a pour avantage de protéger et couvrir complètement le levier de tout fonctionnement accidentel.  The present invention has the advantage of completely protecting and covering the lever from any accidental operation.
La présente invention a aussi pour avantage d'augmenter l'efficacité du scellé. The present invention also has the advantage of increasing the effectiveness of the seal.
La présente invention a aussi pour avantage de diminuer le volume de la tête ou vanne de l'extincteur.  The present invention also has the advantage of reducing the volume of the head or valve extinguisher.
La présente invention a aussi pour avantage de diminuer les bruits parasites de la tête ou vanne de l'extincteur posé dans les véhicules en mouvement.  The present invention also has the advantage of reducing the parasitic noise of the head or valve of the extinguisher placed in moving vehicles.
La présente invention a aussi pour avantage de diminuer le nombre de pièces de la tête ou vanne de l'extincteur afin de réduire les coûts de production et de montage. The present invention also has the advantage of reducing the number of parts of the head or valve extinguisher to reduce production costs and assembly.
Il est aussi important, notamment pour des raisons de sécurité, que le personnel d'entretien ou de maintenance des extincteurs puisse vérifier de manière très simple et rapide si l'extincteur a déjà été utilisé, avec la présente tête d'extincteur, ce problème est résolu par le fait que le scellé d'inviolabilité fait partie intégrante de la came de sécurité. It is also important, especially for safety reasons, that the service or maintenance personnel of the fire extinguishers can check in a very simple and quick way if the extinguisher has already been used, with this extinguisher head, this problem is solved by the fact that the tamperproof seal is an integral part of the safety cam.
Selon un mode de réalisation particulier, la tête de vanne est caractérisée en ce que le dessus ou sommet du corps de vanne est muni de rainures longitudinales (sur deux parties latérales dudit corps) localisées de part et d'autre du levier de commande (perpendiculairement à l'axe de rotation du levier de commande), les rainures servant de glissière à ladite came de sécurité According to a particular embodiment, the valve head is characterized in that the top or top of the valve body is provided with longitudinal grooves (on two lateral parts of said body) located on either side of the control lever (perpendicularly to the axis of rotation of the control lever), the grooves serving as a slideway to said safety cam
Selon un mode de réalisation particulier, la tête de vanne est caractérisée en ce que les parties longitudinales de la base de la came de sécurité sont conformées en forme de rails prévus pour le glissement de la came de sécurité dans les rainures du corps de vanne.  According to a particular embodiment, the valve head is characterized in that the longitudinal portions of the base of the safety cam are shaped in the form of rails provided for sliding of the safety cam in the grooves of the valve body.
Selon un mode de réalisation particulier, la tête de vanne est caractérisée en ce que la partie de la came de sécurité opposée au passage de sortie de l'agent extincteur est munie d'une ouverture faisant office de prise pour la traction de la came de sécurité (par exemple permettant le passage d'au moins un doigt). Selon un mode de réalisation particulier, la tête de vanne est caractérisée en ce que le corps de vanne comprend sur le haut de sa face avant un logement (ou rainure) susceptible de recevoir la partie inférieure du scellé de la came de sécurité. According to a particular embodiment, the valve head is characterized in that the part of the safety cam opposite to the outlet passage of the extinguishing agent is provided with an opening acting as a catch for the traction of the cam of security (eg allowing the passage of at least one finger). According to a particular embodiment, the valve head is characterized in that the valve body comprises on the top of its front face a housing (or groove) capable of receiving the lower portion of the seal of the safety cam.
Selon un mode de réalisation particulier, la tête de vanne est caractérisée en ce que le corps de vanne comprend sur la partie opposé au canal de vidange une ouverture (par exemple pour permettre le passage d'au moins un doigt) faisant office de prise de maintien de l'extincteur.  According to a particular embodiment, the valve head is characterized in that the valve body comprises on the part opposite the emptying channel an opening (for example to allow the passage of at least one finger) acting as maintaining the fire extinguisher.
Selon un mode de réalisation particulier, la tête de vanne est caractérisée en ce que la came de sécurité comprend deux parois latérales de part et d'autre de la paroi supérieure, les dites parois latérales et supérieures présentant un fléchage indiquant le sens de traction.  According to a particular embodiment, the valve head is characterized in that the safety cam comprises two side walls on either side of the upper wall, said side walls and upper having an arrow indicating the direction of traction.
Selon un autre aspect, l'invention concerne aussi l'utilisation ou l'application d'une tête de vanne selon la présente invention pour un extincteur, de préférence pour un extincteur à pression auxiliaire.  In another aspect, the invention also relates to the use or application of a valve head according to the present invention for an extinguisher, preferably for an auxiliary pressure extinguisher.
L'invention concerne aussi un appareil extincteur d'incendie comprenant une tête d'extincteur selon la présente invention. The invention also relates to a fire extinguisher apparatus comprising a fire extinguisher head according to the present invention.
Selon un mode de réalisation particulier, l'appareil comprend  According to a particular embodiment, the apparatus comprises
un corps contenant un agent extincteur de type poudre extinctrice, et  a body containing a fire-extinguishing powder extinguishing agent, and
un tube central, prévu à l'intérieur dudit corps, dans lequel est placée une cartouche sous pression contenant un gaz propulseur.  a central tube provided inside said body, in which is placed a pressure cartridge containing a propellant.
Selon un mode de réalisation particulier, l'appareil est caractérisé en ce que ladite tête d'extincteur comprend :  According to a particular embodiment, the apparatus is characterized in that said extinguisher head comprises:
un corps de vanne comprenant principalement un canal (alésage) central destiné à recevoir une tige, et un canal (alésage) latéral (perpendiculaire au canal central) constituant un canal de vidange de l'agent extincteur, a valve body mainly comprising a central channel (bore) for receiving a rod, and a lateral channel (bore) (perpendicular to the central channel) constituting a drain channel for the extinguishing agent,
une tige, montée dans ledit canal central du corps de vanne, et contrôlant l'ouverture et la fermeture dudit canal de vidange, a rod, mounted in said central channel of the valve body, and controlling the opening and closing of said drain channel,
un centreur supérieur, permettant de centrer ladite tige vis-à-vis dudit canal de vidange, un levier de commande relié audit corps de vanne par des tourillons, et an upper centering device for centering said rod with respect to said emptying channel, a control lever connected to said valve body by journals, and
une came de sécurité (cache de sécurité, coiffe de sécurité) montée de façon amovible et coulissante sur le dessus/sommet du corps de vanne, recouvrant complètement ledit levier de commande, ladite came étant formée d'une seule pièce et comportant sur une face (paroi) avant, un scellé faisant partie intégrante de ladite pièce et qui est susceptible d'être arraché lorsque la came de sécurité est extraite, ladite came de sécurité comprenant une paroi (face) supérieure pourvue en son centre d'une rampe de glissement localisée sur la face inférieure de ladite paroi supérieure ladite rampe de glissement permettant le basculement du levier lors de la traction de la came de sécurité . a safety cam (safety cover, safety cover) removably and slidably mounted on the top / top of the valve body, completely covering said control lever, said cam being formed in one piece and having on one face (wall) before, a seal integral with said workpiece and which can be torn off when the safety cam is extracted, said safety cam including a wall (Upper face) provided in its center with a sliding ramp located on the lower face of said upper wall said sliding ramp for tilting of the lever during the traction of the safety cam.
Selon un mode de réalisation particulier, l'appareil est caractérisé en ce que ledit centreur supérieur est composé d'une chambre cylindrique à la base de laquelle est monté un anneau de maintien contenant des ouvertures pour le passage de l'agent extincteur.  According to a particular embodiment, the apparatus is characterized in that said upper centralizer is composed of a cylindrical chamber at the base of which is mounted a holding ring containing openings for the passage of the extinguishing agent.
Selon un mode de réalisation particulier, l'appareil est caractérisé en ce que ladite tige comprend : According to a particular embodiment, the apparatus is characterized in that said rod comprises:
un ressort de rappel prenant appui sur ledit anneau de maintien du centreur supérieur,  a return spring bearing on said retaining ring of the upper centering device,
un joint supérieur assurant l'étanchéité du canal central au-delà du canal de vidange,  an upper seal ensuring the sealing of the central channel beyond the drain channel,
un joint central assurant l'étanchéité au-devant du canal de vidange, et  a central seal ensuring the seal in front of the emptying channel, and
un joint inférieur assurant l'étanchéité de la chambre du centreur supérieur.  a lower seal ensuring the sealing of the chamber of the upper centering device.
Selon un mode de réalisation particulier, l'appareil est caractérisé en ce que ledit corps comprend un centreur inférieur, prévus à l'intérieur dudit tube, pourvu d'un ou plusieurs diffuseurs traversant la paroi transversale dudit tube et permettant d'expulser le gaz propulseur contenu dans ladite cartouche directement dans l'agent extincteur. L'appareil peut comprendre un ou plusieurs diffuseurs traversant la paroi transversale dudit tube, par exemple au moins 1 diffuseur, au moins 2, au moins 3 ou au moins 4 diffuseurs ou plus. De préférence l'appareil comprend 1 ou 2, ou 3, ou 4 diffuseurs, plus préférablement 2 diffuseurs.  According to a particular embodiment, the apparatus is characterized in that said body comprises a lower centralizer, provided inside said tube, provided with one or more diffusers passing through the transverse wall of said tube and for expelling the gas propellant contained in said cartridge directly in the extinguishing agent. The apparatus may comprise one or more diffusers passing through the transverse wall of said tube, for example at least 1 diffuser, at least 2, at least 3 or at least 4 diffusers or more. Preferably the apparatus comprises 1 or 2, or 3, or 4 diffusers, more preferably 2 diffusers.
Selon un mode de réalisation particulier, l'appareil est caractérisé en ce que la ou les extrémités du ou desdits diffuseurs sont logée(s) dans une ou des alvéole(s) formée(s) par un ou des déflecteur(s) localisés sur la paroi extérieure dudit tube.  According to a particular embodiment, the apparatus is characterized in that the end (s) of the at least one diffuser are housed in one or more cells formed by a deflector (s) located on the outer wall of said tube.
Selon un mode de réalisation, l'appareil est caractérisé en ce que la cartouche est essentiellement cylindrique et muni d'un col contenant un opercule prévu pour la perforation de la cartouche. De préférence, l'appareil est caractérisé en ce que la cartouche est placée à l'envers dans ledit tube central avec son col et son opercule orienté vers la base du corps. Selon un mode de réalisation particulier, l'appareil est caractérisé en ce que le tube central est divisé en une partie supérieure et une partie inférieure dont le diamètre extérieur est plus petit que le diamètre extérieur de la partie supérieure dudit tube. De préférence, la cartouche est montée à l'intérieur de la partie supérieure dudit tube central, et le diamètre extérieur de ladite cartouche est plus petit que le diamètre intérieur de ladite partie supérieure du tube, afin qu'un espace circonférentiel soit créé entre ladite cartouche et la partie supérieure dudit tube. De plus, dans un autre mode de réalisation particulier, l'appareil est caractérisé en ce que ledit centreur inférieur est prévu dans la partie supérieure dudit tube central au niveau du col de ladite cartouche. According to one embodiment, the apparatus is characterized in that the cartridge is essentially cylindrical and provided with a neck containing a cover provided for the perforation of the cartridge. Preferably, the apparatus is characterized in that the cartridge is placed upside down in said central tube with its neck and its lid oriented towards the base of the body. According to a particular embodiment, the apparatus is characterized in that the central tube is divided into an upper part and a lower part whose outer diameter is smaller than the outer diameter of the upper part of said tube. Preferably, the cartridge is mounted within the upper portion of said central tube, and the outer diameter of said cartridge is smaller than the inner diameter of said upper portion of the tube, so that a circumferential gap is created between said cartridge and the upper part of said tube. In addition, in another particular embodiment, the apparatus is characterized in that said lower centralizer is provided in the upper part of said central tube at the neck of said cartridge.
Le ou lesdits diffuseurs du gaz propulseur peuvent être prévus à une hauteur comprise entre la demi-hauteur inférieure et le troisième quart inférieur de la hauteur interne dudit corps. De préférence, le ou lesdits diffuseurs sont dirigés vers le bas et transitent de l'intérieur du tube central, vers le cœur de la masse de poudre. The one or more diffusers of the propellant gas may be provided at a height between the lower half height and the third lower quarter of the internal height of said body. Preferably, the one or more diffusers are directed downwards and pass from the inside of the central tube towards the heart of the mass of powder.
Selon un mode de réalisation particulièrement préféré, ledit centreur inférieur est composé d'une chambre cylindrique contenant un ensemble piston lequel est monté, de préférence par clipsage, sur la cartouche. De préférence, ledit ensemble piston comprend :  According to a particularly preferred embodiment, said lower centralizer is composed of a cylindrical chamber containing a piston assembly which is mounted, preferably by clipping, on the cartridge. Preferably, said piston assembly comprises:
un piston,  A piston,
un joint assurant l'étanchéité du gaz propulseur lors de la perforation de la cartouche entre ledit piston et ladite cartouche au niveau du col de la cartouche,  a seal ensuring the sealing of the propellant gas during the perforation of the cartridge between said piston and said cartridge at the neck of the cartridge,
un joint assurant l'étanchéité du gaz propulseur lors de la perforation de la cartouche entre le diamètre extérieur dudit piston et le diamètre intérieur dudit centreur inférieur,  a seal ensuring the sealing of the propellant gas during the perforation of the cartridge between the outer diameter of said piston and the inside diameter of said lower locator,
un percuteur placé au centre du piston en prenant appui sur le fond dudit centreur inférieur permettant de perforer la cartouche au niveau de l'opercule de ladite cartouche, et  a striker placed in the center of the piston resting on the bottom of said lower centering device for perforating the cartridge at the operculum of said cartridge, and
un ressort inférieur (de maintien) placé au centre du piston en prenant appui sur le fond dudit centreur inférieur, permettant de contrôler la position de l'ensemble piston. a lower spring (holding) placed in the center of the piston bearing on the bottom of said lower center, for controlling the position of the piston assembly.
Selon un autre aspect, l'invention se rapporte à un procédé d'extinction d'incendie dans lequel de préférence un appareil extincteur selon l'invention est mis en œuvre. According to another aspect, the invention relates to a fire extinguishing process in which preferably an extinguisher apparatus according to the invention is implemented.
Le présent procédé d'extinction d'incendie utilisant un appareil extincteur comprenant un corps contenant un agent extincteur de type poudre extinctrice, une tête de vanne d'extincteur selon l'invention fixée audit corps et un tube central, prévu à l'intérieur dudit corps, dans lequel est placé une cartouche sous pression contenant un gaz propulseur, ledit procédé comprenant une pressurisation de l'extincteur et la vidange de l'agent extincteur, est de préférence caractérisé en ce que la pressurisation comprend les étapes consécutives de: The present fire extinguishing method using an extinguisher apparatus comprising a body containing a fire extinguishing powder extinguishing agent, a fire extinguisher valve head according to the invention attached to said body and a central tube provided therein body, in which is placed a pressure cartridge containing a propellant, said method comprising a pressurization of the extinguisher and the emptying of the extinguishing agent, is preferably characterized in that the pressurization comprises the following steps of:
traction par glissement de la came de sécurité de la tête de vanne d'extincteur, rupture du scellé lors de la traction de ladite came de sécurité, sliding traction of the safety cam of the extinguisher valve head, rupture of the seal during the pulling of said safety cam,
basculement du levier de la vanne d'extincteur, tilting the lever of the fire extinguisher valve,
percussion de ladite cartouche permettant de libérer le gaz propulseur contenu dans ladite cartouche directement dans l'agent extincteur, et  percussion of said cartridge for releasing the propellant contained in said cartridge directly into the extinguishing agent, and
transport du mélange du gaz propulseur et de l'agent extincteur vers la tête d'extincteur.transporting the mixture of propellant and extinguishing agent to the extinguisher head.
Selon un mode de réalisation dudit procédé, la pressurisation dudit extincteur et la vidange de l'agent extincteur sont réalisées simultanément. Selon un autre mode de réalisation, la pressurisation dudit extincteur et la vidange de l'agent extincteur sont réalisées de manière consécutive. According to one embodiment of said method, the pressurization of said extinguisher and the emptying of the extinguishing agent are carried out simultaneously. According to another embodiment, the pressurization of said extinguisher and the emptying of the extinguishing agent are carried out consecutively.
D'autres particularités et avantages de la présente invention apparaîtront à la lecture de la description qui va suivre faite avec référence aux dessins annexés. Other features and advantages of the present invention will appear on reading the description which follows with reference to the accompanying drawings.
Brève description des dessins  Brief description of the drawings
La figure 1 représente une vue en coupe schématique dans le plan de symétrie d'un appareil extincteur selon un mode de réalisation particulier de l'invention avant emploi. La figure 2 représente l'appareil extincteur de la figure 1 , dans lequel le scellé de la came de sécurité est brisé.  Figure 1 shows a schematic sectional view in the plane of symmetry of a fire extinguisher apparatus according to a particular embodiment of the invention before use. Fig. 2 shows the extinguisher apparatus of Fig. 1, in which the seal of the safety cam is broken.
La figure 3 représente l'appareil extincteur de la figure 1 , dans lequel la came de sécurité est retirée, entraînant le basculement du levier de la tête d'extincteur et de ce fait la percussion de la cartouche libérant ainsi le gaz propulseur dans le corps de l'appareil l'homogénéisation du gaz propulseur et de l'agent extincteur se fait dans le corps de l'appareil.  FIG. 3 represents the extinguishing apparatus of FIG. 1, in which the safety cam is removed, causing the lever of the extinguisher head to tilt and thus the percussion of the cartridge thus releasing the propellant gas into the body the homogenization of the propellant and extinguishing agent is carried out in the body of the apparatus.
La figure 4 représente l'appareil extincteur de la figure 1 , dans lequel l'homogénéisation du gaz propulseur et de l'agent extincteur se fait dans le corps de l'appareil, mettant l'appareil sous pression.  Figure 4 shows the extinguisher apparatus of Figure 1, wherein the homogenization of the propellant and the extinguishing agent is in the body of the apparatus, putting the apparatus under pressure.
La figure 5 représente la vidange de l'appareil extincteur de la figure 1 , par actionnement du levier de la tête d'extincteur. Description détaillée Figure 5 shows the emptying of the extinguisher apparatus of Figure 1, by actuating the lever of the extinguisher head. detailed description
Un extincteur du type à pression auxiliaire est généralement constitué d'un corps, de préférence un cylindre métallique, d'une vanne (également appelée tête d'extincteur, tête de vanne, ou robinet d'arrêt), d'un tube central et d'une cartouche de gaz propulseur. Des extincteurs portatifs sont pourvus d'une poignée permettant de porter l'extincteur et de percuter la cartouche. Selon la présente invention le terme « extincteur » est synonyme du terme « appareil extincteur ».  An auxiliary pressure type fire extinguisher generally consists of a body, preferably a metal cylinder, a valve (also known as a fire extinguisher head, valve head, or shut-off valve), a central tube, and a propellant cartridge. Portable fire extinguishers are equipped with a handle to carry the fire extinguisher and to strike the cartridge. According to the present invention the term "extinguisher" is synonymous with the term "fire extinguisher".
La présente invention a pour but d'améliorer le fonctionnement des vannes d'extincteur d'incendie par optimalisation du système de percussion (perforation) de la cartouche de gaz propulseur.  The present invention aims to improve the operation of the fire extinguisher valves by optimizing the percussion system (perforation) of the propellant cartridge.
Selon la présente invention le terme « vanne d'extincteur » est synonyme de « tête d'extincteur », ou « tête de vanne » ou de « robinet d'arrêt d'un extincteur ».  According to the present invention the term "fire extinguisher valve" is synonymous with "fire extinguisher head", or "valve head" or "fire extinguisher shutoff valve".
La tête de vanne d'extincteur a été améliorée en réalisant une came de sécurité réalisée d'une seule pièce dans laquelle est conformée une rampe de glissement, et qui comprend un scellé d'inviolabilité faisant partie intégrante de la came de sécurité.  The extinguisher valve head has been improved by providing a one-piece safety cam in which a slip ramp is formed, and which includes a tamper-evident seal integral with the safety cam.
Selon la présente invention, le terme « came de sécurité » est synonyme de « cache de sécurité » ou de « coiffe de sécurité ».  According to the present invention, the term "safety cam" is synonymous with "security cache" or "security cap".
Selon la présente invention, la percussion de la cartouche est réalisée par simple traction sur la came de sécurité. Lors de cette traction, la rampe de glissement de la came de sécurité fait pivoter le levier du corps de vanne autour de son axe et simultanément, par cette même action, brise le scellé. Lors du pivotement du levier, l'action sur la tige (tiroir) contenue dans le corps de vanne induit la perforation de la cartouche. Cette perforation libère le gaz propulseur dans la bouteille.  According to the present invention, the percussion of the cartridge is carried out by simple pulling on the safety cam. During this traction, the sliding ramp of the safety cam pivots the lever of the valve body about its axis and simultaneously, by this same action, breaks the seal. When pivoting the lever, the action on the rod (drawer) contained in the valve body induces the perforation of the cartridge. This perforation releases the propellant gas into the bottle.
Faisant référence à la figure 1 , un extincteur 2 selon un mode de réalisation particulier de la présente invention est illustré. Les figures 2, 3 et 4, et 5 représentent schématiquement le fonctionnement d'un appareil 2 selon un mode de réalisation particulier de la présente invention.  Referring to Figure 1, an extinguisher 2 according to a particular embodiment of the present invention is illustrated. Figures 2, 3 and 4, and 5 show schematically the operation of an apparatus 2 according to a particular embodiment of the present invention.
Selon un mode de réalisation particulier de l'invention, les éléments de base de l'extincteur 2 comprennent :  According to a particular embodiment of the invention, the basic elements of extinguisher 2 comprise:
- une bouteille 17, également appelé « corps » dans la présente invention, laquelle bouteille est un récipient ou réservoir, généralement cylindrique, en métal ou en plastique, prévu pour être mis sous pression interne et muni des parties soudées. une tête de vanne 1 également appelé « robinet d'arrêt » ou « tête d'extincteur » dans la présente invention, laquelle rempli plusieurs fonctions. Dans un premier temps elle sert de bouchon de fermeture de la bouteille 17. Ensuite elle permet la perforation de la cartouche 20 de gaz propulseur 21. Enfin, elle autorise la vidange de l'agent extincteur 18 en une fois ou par intermittence. - A bottle 17, also called "body" in the present invention, which bottle is a container or tank, generally cylindrical, metal or plastic, intended to be pressurized internally and provided with the welded portions. a valve head 1 also referred to as a "shut-off valve" or "extinguisher head" in the present invention, which fulfills several functions. Initially it serves as a closure cap of the bottle 17. Then it allows the perforation of the cartridge 20 of propellant 21. Finally, it allows the extinguishing agent 18 to be emptied at one time or intermittently.
un agent extincteur 18, lequel est un ensemble du ou des produits contenus dans l'extincteur 2 et dont l'action provoque l'extinction. La nature de l'agent extincteur retenu est fonction de la classe de feu la plus probable dans la zone d'utilisation de l'appareil. On distingue différentes classes de feux, entre autres les feux de matériaux solides (classe A) ; de matériaux liquides ou de solides liquéfiables (classe B), de gaz (classe C), de métaux (classe D). Les principaux agents extincteurs qui peuvent être utilisés dans la présente invention sont les suivants. Entre parenthèse les classes sur lesquelles ils sont utilisables : l'eau pulvérisée (A) ; l'eau pulvérisée avec additif (émulseur) (AB) ; les poudres ABC (ABC) ; les poudres BC (BC) ; le dioxyde de carbone (BC) ou les poudres D (D). De préférence, l'agent extincteur est une poudre de type ABC.  an extinguishing agent 18, which is an assembly of the product or products contained in extinguisher 2 and whose action causes extinction. The nature of the extinguishing agent used depends on the most likely fire class in the area of use of the appliance. There are different classes of fires, including fires of solid materials (class A); liquid materials or liquifiable solids (class B), gases (class C), metals (class D). The main extinguishing agents that can be used in the present invention are as follows. In parentheses, the classes on which they can be used: water spray (A); water spray with additive (emulsifier) (AB); powders ABC (ABC); BC (BC) powders; carbon dioxide (BC) or powders D (D). Preferably, the extinguishing agent is an ABC type powder.
une cartouche 20, laquelle comprend un récipient métallique sous pression contenant un gaz propulseur 21 , par exemple du C02. Le col 32 de la cartouche 20 contient l'opercule 33 prévue pour la perforation a cartridge 20, which comprises a metal container under pressure containing a propellant 21, for example CO 2 . The neck 32 of the cartridge 20 contains the seal 33 provided for perforation
un percuteur 34 de préférence réalisé en acier, il peut être creux et fendu sur toute sa longueur et sert à la perforation de la cartouche 20 de gaz propulseur 21. Une extrémité est biseautée afin de facilité la perforation.  a striker 34 preferably made of steel, it can be hollow and split along its entire length and is used for perforation of the propellant cartridge 21. An end is beveled to facilitate perforation.
un tube central 19 destiné à conduire le mélange de l'agent extincteur 18 et le gaz propulseur 21 vers la tête de l'appareil 1 et ainsi vers l'extérieur.  a central tube 19 for driving the mixture of the extinguishing agent 18 and the propellant 21 to the head of the apparatus 1 and thus to the outside.
La partie supérieure de l'appareil, c'est-à-dire les éléments de la tête de vanne 1 selon un mode de réalisation particulier de l'invention est décrite ci-dessous.  The upper part of the apparatus, that is to say the elements of the valve head 1 according to a particular embodiment of the invention is described below.
La tête de vanne 1 est composée du corps de vanne 3 comprenant un levier de commande 7, un tiroir ou tige 5 et un centreur supérieur 22. Cet ensemble est recouvert d'une coiffe ou came de sécurité 9 dans laquelle un scellé 1 1 est incorporé.  The valve head 1 is composed of the valve body 3 comprising a control lever 7, a spool or rod 5 and an upper centering device 22. This assembly is covered with a safety cap or cam 9 in which a seal 1 1 is incorporated.
Le corps de vanne 3 est prévu pour recevoir l'ensemble des éléments composant la vanne 1. Le corps de vanne 3 comprend principalement un canal (alésage) central 4 destiné à recevoir la tige (ou tiroir) 5 et le centreur supérieur 22, et un autre canal (alésage) 6 généralement perpendiculaire au premier destiné au passage de sortie de l'agent extincteur 18. Ce canal 6 est aussi appelé canal de vidange ou canal de sortie 6 de l'agent extincteur. Le corps de vanne 3, dans le cas présent, est fixé à la bouteille 17 par vissage et l'étanchéité de ces deux parties est assurée par un joint de tête type o-ring 35. The valve body 3 is designed to receive all the elements making up the valve 1. The valve body 3 mainly comprises a central channel (bore) 4 intended to receive the rod (or slide) 5 and the upper centering device 22, and another channel (bore) 6 generally perpendicular to the first for the exit passage of the extinguishing agent 18. This channel 6 is also called drain channel or outlet channel 6 extinguishing agent. The valve body 3, in this case, is fixed to the bottle 17 by screwing and the sealing of these two parts is provided by an o-ring type head gasket 35.
Deux trous 36 situés de part et d'autre des parties latérales du corps de vanne 3 sont destinés à recevoir les tourillons 8 d'un levier de commande 7.  Two holes 36 located on either side of the lateral parts of the valve body 3 are intended to receive the journals 8 of a control lever 7.
Au sommet du corps de vanne 3 est réalisé une rainure longitudinale sur chaque partie latérale servant de glissière 55 à la coiffe ou came de sécurité 9.  At the top of the valve body 3 is formed a longitudinal groove on each lateral portion serving as slideway 55 to the safety cap or cam 9.
Un logement 15 en haut de la face avant du corps de vanne 3 est prévu pour recevoir la partie inférieure du scellé 11.  A housing 15 at the top of the front face of the valve body 3 is provided to receive the lower part of the seal 11.
Sur la partie arrière du corps de vanne 3, opposée au canal de sortie 6 de l'agent extincteur, est aménagé une ouverture 16 permettant le passage d'un doigt pour la prise en main de l'extincteur. On the rear part of the valve body 3, opposite the outlet channel 6 of the extinguishing agent, is an opening 16 for the passage of a finger for the grip of the fire extinguisher.
L'appareil selon la présente invention contient également un levier 7. Le levier 7 est muni de part et d'autre de tourillons 8 servant d'axe de rotation. L'action du levier 7 permet dans un premier temps la pressurisation de l'extincteur par perforation de la cartouche 20 lors de l'extraction de la coiffe ou came de sécurité 9, et ensuite cette même action autorise l'expulsion en un coup ou par intermittence de l'agent extincteur 18. Selon un mode de réalisation particulier, une rainure est préformée sur la surface supérieure du levier 7 afin de permettre le guidage de la rampe 13 de la came 9.  The apparatus according to the present invention also contains a lever 7. The lever 7 is provided on either side with pins 8 serving as an axis of rotation. The action of the lever 7 makes it possible firstly to pressurize the extinguisher by perforation of the cartridge 20 during the extraction of the cap or safety cam 9, and then this same action allows the expulsion in one blow or intermittently the extinguishing agent 18. According to a particular embodiment, a groove is preformed on the upper surface of the lever 7 to allow the guide of the ramp 13 of the cam 9.
Selon la présente invention, la tête de vanne d'extincteur 1 comprend une sécurité qui la coiffe. La sécurité appelée ici coiffe ou came 9 est destinée à protéger toute action sur le levier 7; le scellé 11 , situé sur la face avant 10 de la came 9 en fait partie intégrante. According to the present invention, the fire extinguisher valve head 1 comprises a security which caps it. The security called here cap or cam 9 is intended to protect any action on the lever 7; the seal 11, located on the front face 10 of the cam 9 is an integral part.
A la base des deux faces latérales 37 de la came 9 est aménagée longitudinalement un rail 38 (voir figure 3 et 4) prévu pour le glissement, dans les rainures du corps de vanne 3, de la came 9 lors de l'extraction de celle-ci.  At the base of the two lateral faces 37 of the cam 9 is arranged longitudinally a rail 38 (see FIG. 3 and 4) provided for sliding, in the grooves of the valve body 3, of the cam 9 during the extraction of the -this.
Au centre de la came 9, à l'intérieur de la face supérieur 12, est située la rampe de glissement 13 permettant le basculement du levier 7 lors de la traction de la came de sécurité 9.  In the center of the cam 9, inside the upper face 12, is located the sliding ramp 13 for tilting the lever 7 during the pulling of the safety cam 9.
Sur la partie arrière de la came 9, opposée au passage de sortie 6 de l'agent extincteur, est aménagée une ouverture 14 permettant le passage d'un doigt prévu pour son extraction par glissement. Selon un mode de réalisation préféré de l'invention, la forme ergonomique de la came autorise une prise en main complète afin de permettre une deuxième possibilité d'extraction par glissement (type gâchette colt). On the rear part of the cam 9, opposite the outlet passage 6 of the extinguishing agent, is arranged an opening 14 allowing the passage of a finger provided for its extraction by sliding. According to a preferred embodiment of the invention, the ergonomic shape of the cam allows a complete grip in order to allow a second possibility of extraction by sliding (trigger type colt).
Les deux faces latérales et la face supérieure peuvent présenter un fléchage indiquant le sens de traction.  The two lateral faces and the upper face may have an arrow indicating the direction of traction.
La traction par glissement illustrée par la flèche 48 entraîne la came ou coiffe de sécurité 9 à l'extérieur de la vanne 1. Pendant cette opération, la came 9 fractionne le scellé 1 1 et la rampe de glissement 13 fait basculer le levier 7: cette action permet la réalisation de la pressurisation de l'extincteur. Cette action, également appelé « prépercussion », est illustrée aux figures 2 à 4.  The sliding traction illustrated by the arrow 48 drives the cam or safety cap 9 outside the valve 1. During this operation, the cam 9 splits the seal 1 1 and the sliding ramp 13 switches the lever 7: this action allows the realization of the pressurization of the fire extinguisher. This action, also called "prepercussion", is illustrated in Figures 2 to 4.
Le scellé inviolable 11 , faisant ici partie intégrante de la came ou coiffe de sécurité 9, est un élément de contrôle permettant de visualiser instantanément si l'extincteur à été utilisé ou non. Cet élément 11 ne peut être retiré ou enlevé que part rupture de celui-ci. Il est fracturé lors de l'extraction de la came ou coiffe de sécurité 9 (figure 2).  The tamperproof seal 11, which is an integral part of the cam or safety cap 9, is a control element that makes it possible to instantly visualize whether the extinguisher has been used or not. This element 11 can be removed or removed only part of rupture thereof. It is fractured during the extraction of the cam or safety cap 9 (Figure 2).
La tige ou tiroir 5 est l'élément central de la vanne 1. La tige 5 composée d'un corps, de trois joints de type o-ring, 29, 30, 31 , et d'un ressort de rappel 28. Le joint supérieur 29 assure l'étanchéité du canal central 4 au-delà du canal de sortie 6 de l'agent extincteur. Le joint central 30 assure l'étanchéité au-devant de ce canal de sortie 6. Le joint inférieur 31 assure l'étanchéité de la chambre contenant le ressort de rappel 28. L'action sur le levier de commande 7 autorise le déplacement de la tige 5 dans le canal central 4. Ce déplacement de la tige 5 dégage le joint central 30 de son logement et permet l'expulsion de l'agent extincteur 18 par le canal de vidange 6. Le ressort de rappel 28 permet à la tige 5 de reprendre sa position initiale dès que l'action sur le levier 7 est annulée. The rod or drawer 5 is the central element of the valve 1. The rod 5 consists of a body, three O-ring type seals, 29, 30, 31, and a return spring 28. The seal upper 29 seals the central channel 4 beyond the outlet channel 6 of the extinguishing agent. The central seal 30 seals in front of this outlet channel 6. The lower seal 31 seals the chamber containing the return spring 28. The action on the control lever 7 allows the movement of the rod 5 in the central channel 4. This displacement of the rod 5 releases the central seal 30 from its housing and allows the expulsion of the extinguishing agent 18 through the emptying channel 6. The return spring 28 allows the rod 5 to resume its initial position as soon as the action on the lever 7 is canceled.
Le centreur supérieur 22 est composé d'une chambre et d'un anneau de maintien 27. La chambre du centreur supérieur est destinée à recevoir le ressort de rappel 28 de la tige 5. L'anneau de maintien 27 sert d'appui pour ce ressort de rappel 28, et de centrage de la tige 5 vis à vis du canal central 4. Cet anneau 27 comprend des ouvertures (ou trous) 39 pour le passage de l'agent extincteur 18.  The upper centralizer 22 is composed of a chamber and a retaining ring 27. The chamber of the upper centralizer is intended to receive the return spring 28 of the rod 5. The retaining ring 27 serves as support for this purpose. return spring 28, and centering of the rod 5 with respect to the central channel 4. This ring 27 comprises openings (or holes) 39 for the passage of the extinguishing agent 18.
Selon un mode de réalisation particulier de la présente invention, la partie inférieure ou interne de l'appareil comprend une bouteille 17 ayant une paroi cylindrique et un fond 40 de forme bombée. La bouteille 17 comprend un tube 19 dans lequel est placé un centreur inférieur 23, un ensemble piston 45 et la cartouche 20 de gaz propulseur 21. La partie supérieure 41 et la partie inférieure 42 du tube 19 sont reliées par une paroi transversale 56 pourvue d'une ou plusieurs ouvertures 43 (deux sont montrées sur les figures 1 à 5). Ces éléments sont décrits ci-dessous. According to a particular embodiment of the present invention, the lower or internal part of the apparatus comprises a bottle 17 having a cylindrical wall and a bottom 40 of curved shape. The bottle 17 comprises a tube 19 in which is placed a lower centralizer 23, a piston assembly 45 and the cartridge 20 of propellant gas 21. The upper part 41 and the lower part 42 of the tube 19 are connected by a transverse wall 56 provided with one or more openings 43 (two are shown in Figures 1 to 5). These elements are described below.
Le tube central 19 est destiné à conduire l'agent extincteur 18 vers le canal de vidange 6. Muni de ses différents composants, il est raccordé par filetage au corps de vanne 3. Des rainures de guidage et de maintien sont prévues pour l'assemblage et le maintien de ses différents constituants. Le tube central 19 est divisé en une partie supérieure 41 et une partie inférieure 42 dont le diamètre extérieur est plus petit que le diamètre extérieur de la partie supérieure 41 dudit tube 19.  The central tube 19 is intended to lead the extinguishing agent 18 to the emptying channel 6. Equipped with its various components, it is threadedly connected to the valve body 3. Guide and retaining grooves are provided for the assembly and the maintenance of its different constituents. The central tube 19 is divided into an upper portion 41 and a lower portion 42 whose outer diameter is smaller than the outer diameter of the upper portion 41 of said tube 19.
Dans la partie supérieure 41 du tube central 19 se trouve un centreur inférieur 23 qui est composé d'une chambre cylindrique 44 d'où émerge (se profile) une ou plusieurs sorties 24 (deux sont montrées sur les figures 1 à 5) destinées à diriger le gaz propulseur 21. Cette ou ces sorties 24, appelées « éjecteur » ou « diffuseur» traversent la paroi transversale 56 du tube 19 au niveau des ouvertures 43, afin d'expulser vers le bas le gaz propulseur 21 directement dans la masse de l'agent extincteur 18.  In the upper portion 41 of the central tube 19 is a lower centralizer 23 which is composed of a cylindrical chamber 44 from which emerges (is profiled) one or more outlets 24 (two are shown in Figures 1 to 5) for directing the propellant 21. This or these outlets 24, called "ejector" or "diffuser" through the transverse wall 56 of the tube 19 at the openings 43, to expel the propellant gas 21 directly into the mass of the extinguishing agent 18.
Juste en dessous des ouvertures 43 (percées dans la paroi transversale 56 reliant la partie supérieure 41 à la partie inférieure 42 du tube 19) et accolés à la paroi extérieure du tube inférieur 42, est réalisé un ou plusieurs (en rapport avec le nombre de diffuseurs 24 du centreur inférieur 23) déflecteurs 26 créant une ou des alvéoles 25 en communication directe avec la ou les ouvertures 43. Ce ou ces déflecteurs 26 formant cette ou ces alvéoles 25, dans lesquelles sont logés le ou les diffuseurs 24 dudit centreur inférieur 23, sont profilés vers le bas dans leurs parties intérieures suivant un angle d'au moins 30° par rapport à l'horizontale. Ce ou ces déflecteurs 26 servent à diriger suivant cet angle le gaz propulseur 21 dans la bouteille 17, lors de la perforation de la cartouche 20, afin de permettre ainsi un dé-tassement efficace de l'agent extincteur 18 contenu dans ladite bouteille 17. Just below the openings 43 (pierced in the transverse wall 56 connecting the upper part 41 to the lower part 42 of the tube 19) and contiguous to the outer wall of the lower tube 42, is made one or more (in relation to the number of diffusers 24 of the lower centralizer 23) deflectors 26 creating one or more cells 25 in direct communication with the opening or openings 43. This or these deflectors 26 forming this or these cells 25, in which are housed or the diffusers 24 of said lower centralizer 23 , are profiled downwards in their inner parts at an angle of at least 30 ° to the horizontal. This or these deflectors 26 serve to direct the propellant gas 21 in the bottle 17 during the perforation of the cartridge 20 to this extent, thus enabling the extinguishing agent 18 contained in said bottle 17 to be effectively de-packed.
Le centreur inférieur 23 est composé d'une paroi circulaire et d'une paroi transversale formant une chambre cylindrique 44 pour recevoir l'ensemble piston 45. L'ensemble piston est composé d'un piston 45, d'un joint type o-ring 47, d'un ressort de maintien 46, d'un percuteur 34, l'ensemble étant monté sur le col 32 de la cartouche 20 de gaz propulseur 21.  The lower centralizer 23 is composed of a circular wall and a transverse wall forming a cylindrical chamber 44 for receiving the piston assembly 45. The piston assembly is composed of a piston 45, an o-ring type seal 47, a holding spring 46, a striker 34, the assembly being mounted on the neck 32 of the cartridge 20 of propellant 21.
Faisant référence aux figures 2, 3, 4, et 5 le fonctionnement d'un appareil selon la présente invention est représenté.  Referring to Figures 2, 3, 4, and 5 the operation of an apparatus according to the present invention is shown.
Une première étape, illustrée à la figure 2, consiste à extraire (flèche 48) la coiffe ou came de sécurité 9 hors du corps de vanne 3 en maintenant fermement l'appareil 2 et en effectuant une traction rapide et énergique sur la sécurité 9, jusqu'à extraction complète. Cette extraction, réalisée par glissement perpendiculairement à l'extincteur 2, entraîne automatiquement la rupture du scellé 11 inviolable. Pendant cette opération, la came de sécurité 9, grâce à la rampe de glissement 13, provoque le basculement complet et ensuite le relâchement du levier 7. A first step, illustrated in Figure 2, is to extract (arrow 48) the safety cap or cam 9 out of the valve body 3 by firmly holding the device 2 and performing a fast and energetic traction on safety 9, until complete extraction. This extraction, made by sliding perpendicularly to the fire extinguisher 2, automatically causes the rupture of the tamper-proof seal 11. During this operation, the safety cam 9, thanks to the sliding ramp 13, causes the lever 7 to tilt completely and then to release.
Lors de son basculement illustré par la flèche 49 dans la figure 3, le levier de commande 7 pousse sur la tige 5 en comprimant le ressort de rappel 28. Cette étape est illustrée à la figure 3. La tige 5 pousse la cartouche 20 qui entraîne dans son mouvement le piston 45 tout en comprimant le ressort de maintien 46. Le percuteur 34 étant fixe, la pointe de celui-ci perfore la cartouche 20.  During its tilting illustrated by the arrow 49 in Figure 3, the control lever 7 pushes on the rod 5 by compressing the return spring 28. This step is illustrated in Figure 3. The rod 5 pushes the cartridge 20 which drives in its movement the piston 45 while compressing the retaining spring 46. The striker 34 being fixed, the tip thereof pierces the cartridge 20.
Sous l'effet de la perforation, le gaz 21 contenu dans la cartouche 20 est violemment expulsé dans la masse de l'agent extincteur 18 par le ou les diffuseurs 24.  Under the effect of the perforation, the gas 21 contained in the cartridge 20 is violently expelled into the mass of the extinguishing agent 18 by the diffuser (s) 24.
Grâce au ressort de rappel 28 de la tige 5, le canal de vidange 6 est obstrué, et le levier de commande 7 reprend sa position d'activation illustré par la flèche 50. La libération du gaz 21 contenu dans la cartouche 20 est expulsé directement dans la bouteille contenant l'agent extincteur 18 (Figure 4). L'expulsion est illustrée par les courbes 51. L'extincteur 2 est pressurisé et prêt à l'utilisation.  Thanks to the return spring 28 of the rod 5, the emptying channel 6 is obstructed, and the control lever 7 resumes its activation position illustrated by the arrow 50. The release of the gas 21 contained in the cartridge 20 is expelled directly in the bottle containing the extinguishing agent 18 (FIG. 4). The expulsion is illustrated by the curves 51. The extinguisher 2 is pressurized and ready for use.
La figure 5 montre alors la vidange de l'extincteur 2. Une poussée manuelle illustrée par la flèche 51 sur le levier 7 de commande provoque une nouvelle fois un déplacement de la tige 5 et permet instantanément la vidange de l'agent extincteur 18, illustrée par les courbes et flèches 52, 53 et 54. Le ressort de rappel 28 replace la tige 5 dans sa position initiale dès relâchement de la poussée sur le levier de commande 7. Le canal de vidange 6 est ainsi à nouveau obstrué.  FIG. 5 then shows the emptying of the fire extinguisher 2. A manual thrust illustrated by the arrow 51 on the control lever 7 again causes the rod 5 to move and instantly allows the extinguishing agent 18 to be emptied, as illustrated by the curves and arrows 52, 53 and 54. The return spring 28 resets the rod 5 in its initial position as soon as the thrust on the control lever 7 is released. The emptying channel 6 is thus again obstructed.
Ces deux dernières opérations peuvent être exécutées autant de fois que nécessaire, jusqu'à expulsion complète de l'agent extincteur contenu dans la bouteille.  These last two operations can be performed as many times as necessary, until complete expulsion of the extinguishing agent contained in the bottle.
La description donnée ci-dessus se rapporte à un appareil extincteur et à son activation en « deux » coups. Dans ledit appareil utilisé en « deux coups » la pressurisation de l'extincteur est réalisée par une première action sur le levier de commande ; cette opération doit être réalisée automatiquement lors de l'extraction de la sécurité. Une deuxième action sur le levier permet la vidange de l'agent extincteur. Les appareils de la présente invention sont donc réalisés conformément à la norme EN3 pour la fabrication d'extincteurs.  The description given above relates to a fire extinguisher and its activation in "two" shots. In said apparatus used in "two shots" the pressurization of the fire extinguisher is achieved by a first action on the control lever; this must be done automatically when you retrieve the security. A second action on the lever allows the extinguishing agent to be drained. The devices of the present invention are therefore made in accordance with the EN3 standard for the manufacture of fire extinguishers.
La présente invention se rapporte également à l'utilisation d'une tête de vanne selon l'invention dans un appareil extincteur d'incendie. La présente invention se rapporte également à l'utilisation d'un appareil extincteur d'incendie, de préférence du type à pression auxiliaire pour l'extinction d'un incendie. Un appareil selon l'invention peut par exemple être utilisé dans le secteur automobile, le secteur professionnel incendie, ou le secteur domestique. The present invention also relates to the use of a valve head according to the invention in a fire extinguisher apparatus. The present invention relates to also to the use of a fire extinguisher apparatus, preferably of the auxiliary pressure type for extinguishing a fire. An apparatus according to the invention can for example be used in the automotive sector, the professional fire sector, or the domestic sector.

Claims

Revendications claims
1. Tête de vanne d'extincteur (1) caractérisée en ce qu'elle comprend  1. Extinguishing valve head (1) characterized in that it comprises
un corps de vanne (3) comprenant un canal central (4) destiné à recevoir une tige (5), et un canal latéral (6) constituant un canal de vidange d'un agent extincteur, un levier de commande (7) relié audit corps de vanne (3) par des tourillons (8), et une came de sécurité (9) montée de façon amovible et coulissante sur le dessus du corps de vanne (3), recouvrant complètement ledit levier de commande (7), ladite came (9) étant formée d'une seule pièce et comportant sur une face avant (10) un scellé (1 1) faisant partie intégrante de ladite pièce et qui est susceptible d'être arraché lorsque la came de sécurité (9) est extraite, ladite came de sécurité (9) comprenant une paroi supérieure (12) pourvue en son centre d'une rampe de glissement (13) localisée sur la face inférieure de ladite paroi supérieure (12) ladite rampe de glissement (13) permettant le basculement du levier (7) lors de la traction de la came de sécurité (9).  a valve body (3) comprising a central channel (4) for receiving a rod (5), and a lateral channel (6) constituting a drain channel of an extinguishing agent, a control lever (7) connected to said valve body (3) by pins (8), and a safety cam (9) removably and slidably mounted on the top of the valve body (3), completely covering said control lever (7), said cam (9) being formed in one piece and having on a front face (10) a seal (1 1) integral with said workpiece and which can be torn off when the safety cam (9) is extracted, said safety cam (9) comprising an upper wall (12) provided at its center with a sliding ramp (13) located on the lower face of said upper wall (12), said sliding ramp (13) allowing the tilting of the lever (7) when pulling the safety cam (9).
2. Tête selon la revendication 1 , caractérisée en ce que le dessus du corps de vanne (3) est muni de rainures longitudinales localisées de part et d'autre du levier de commande (7) les rainures servant de glissière (55) à ladite came de sécurité (9).2. Head according to claim 1, characterized in that the top of the valve body (3) is provided with longitudinal grooves located on either side of the control lever (7) grooves serving as a slide (55) to said safety cam (9).
3. Tête selon la revendication 2, caractérisée en ce que les parties longitudinales de la base de la came de sécurité (9) sont conformées en forme de rails prévus pour le glissement de la came de sécurité dans les rainures du corps de vanne (3). 3. Head according to claim 2, characterized in that the longitudinal parts of the base of the safety cam (9) are shaped in the form of rails provided for the sliding of the safety cam in the grooves of the valve body (3). ).
4. Tête selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la partie de la came de sécurité (9) opposée au passage de sortie de l'agent extincteur est munie d'une ouverture (14) faisant office de prise pour la traction de la came de sécurité (9).  4. Head according to any one of claims 1 to 3, characterized in that the portion of the safety cam (9) opposite the exit passage of the extinguishing agent is provided with an opening (14) serving as taken to pull the safety cam (9).
5. Tête selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le corps de vanne (3) comprend sur le haut de sa face avant (15) un logement susceptible de recevoir la partie inférieure du scellé (11) de la came de sécurité (9). 5. Head according to any one of claims 1 to 4, characterized in that the valve body (3) comprises on the top of its front face (15) a housing adapted to receive the lower portion of the seal (11) of the safety cam (9).
6. Tête selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le corps de vanne (3) comprend sur la partie opposé au canal de vidange (6) une ouverture (16) faisant office de prise de maintien de l'extincteur (2).  6. Head according to any one of claims 1 to 5, characterized in that the valve body (3) comprises on the opposite portion to the drain channel (6) an opening (16) acting as a hold-down socket. extinguisher (2).
7. Tête selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la came de sécurité (9) comprend deux parois latérales de part et d'autre de la paroi supérieure, les dites parois latérales et supérieures présentant un fléchage indiquant le sens de traction. 7. Head according to any one of claims 1 to 6, characterized in that the safety cam (9) comprises two side walls on either side of the wall upper, said side walls and upper having an arrow indicating the direction of traction.
8. Utilisation/application d'une tête de vanne selon l'une quelconque des revendications 1 à 7 pour un extincteur à pression auxiliaire.  8. Use / application of a valve head according to any one of claims 1 to 7 for an auxiliary pressure extinguisher.
9. Appareil extincteur d'incendie (2) comprenant une tête de vanne d'extincteur (1) selon l'une quelconque des revendications 1 à 7. A fire extinguisher apparatus (2) comprising a fire extinguisher valve head (1) according to any one of claims 1 to 7.
10. Appareil selon la revendication 9, comprenant :  Apparatus according to claim 9, comprising:
un corps (17) contenant un agent extincteur (18) de type poudre extinctrice, et un tube central (19), prévu à l'intérieur dudit corps (17), dans lequel est placée une cartouche (20) sous pression contenant un gaz propulseur (21).  a body (17) containing an extinguishing agent (18) of the fire-extinguishing powder type, and a central tube (19) provided inside said body (17), in which is placed a cartridge (20) under pressure containing a gas thruster (21).
1 1. Appareil selon la revendication 9 ou 10, caractérisé en ce que ladite tête de vanne d'extincteur (1) comprend :  An apparatus according to claim 9 or 10, characterized in that said extinguisher valve head (1) comprises:
un corps de vanne (3) comprenant principalement un canal central (4) destiné à recevoir une tige (5), et un canal latéral (6) constituant un canal de vidange de l'agent extincteur,  a valve body (3) mainly comprising a central channel (4) for receiving a rod (5), and a lateral channel (6) constituting a drain channel for the extinguishing agent,
une tige (5), montée dans ledit canal central (4) du corps de vanne (3), et contrôlant l'ouverture et la fermeture dudit canal de vidange (6),  a rod (5), mounted in said central channel (4) of the valve body (3), and controlling the opening and closing of said drain channel (6),
un centreur supérieur (22), permettant de centrer ladite tige (5) vis-à-vis dudit canal de vidange (6),  an upper centralizer (22) for centering said rod (5) with respect to said emptying channel (6),
un levier de commande (7) relié audit corps de vanne (3) par des tourillons (8), et une came de sécurité (9) montée de façon amovible et coulissante sur le dessus du corps de vanne (3), recouvrant complètement ledit levier de commande (7), ladite came (9) étant formée d'une seule pièce et comportant sur une face avant (10), un scellé (1 1) faisant partie intégrante de ladite pièce et qui est susceptible d'être arraché lorsque la came de sécurité (9) est extraite, ladite came de sécurité (9) comprenant une paroi supérieure (12) pourvue en son centre d'une rampe de glissement (13) localisée sur la face inférieure de ladite paroi supérieure (12) ladite rampe de glissement (13) permettant le basculement du levier (7) lors de la traction de la came de sécurité (9).  a control lever (7) connected to said valve body (3) by pins (8), and a safety cam (9) removably and slidably mounted on the top of the valve body (3), completely covering said control lever (7), said cam (9) being formed in one piece and having on one front face (10), a seal (1 1) forming an integral part of said part and which can be torn off when the safety cam (9) is extracted, said safety cam (9) comprising an upper wall (12) provided at its center with a sliding ramp (13) located on the lower face of said upper wall (12); sliding ramp (13) allowing the lever (7) to tilt while pulling the safety cam (9).
12. Procédé d'extinction d'incendie utilisant un appareil extincteur (2) selon l'une quelconque des revendications 9 à 1 1. 12. A method of extinguishing fire using an extinguisher apparatus (2) according to any one of claims 9 to 11.
PCT/EP2011/064754 2010-08-27 2011-08-26 Valve head for a fire extinguisher, and use thereof WO2012025623A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2010/0509A BE1019460A3 (en) 2010-08-27 2010-08-27 FIRE EXTINGUISHER VALVE HEAD AND USE THEREOF.
BE2010/0509 2010-08-27

Publications (1)

Publication Number Publication Date
WO2012025623A1 true WO2012025623A1 (en) 2012-03-01

Family

ID=43876416

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/064754 WO2012025623A1 (en) 2010-08-27 2011-08-26 Valve head for a fire extinguisher, and use thereof

Country Status (2)

Country Link
BE (1) BE1019460A3 (en)
WO (1) WO2012025623A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657188A1 (en) * 1993-11-12 1995-06-14 Desautel Powder type fire extinguisher
EP1961458A2 (en) * 2007-02-23 2008-08-27 Delta Extinctors Fire extinguisher and its use

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657188A1 (en) * 1993-11-12 1995-06-14 Desautel Powder type fire extinguisher
EP1961458A2 (en) * 2007-02-23 2008-08-27 Delta Extinctors Fire extinguisher and its use

Also Published As

Publication number Publication date
BE1019460A3 (en) 2012-07-03

Similar Documents

Publication Publication Date Title
BE1017476A3 (en) FIRE EXTINGUISHING APPARATUS AND USE THEREOF
CH627709A5 (en) DEVICE FOR DISPENSING A FINELY DIVIDED LIQUID.
EP2989260B1 (en) Device for diffusing an encapsulated material in a water stream
EP2416895B1 (en) Cleaning device for spray gun
FR2709738A1 (en) Method and device for dispensing and packaging a fluid product contained in a pressurized container using a propellant gas.
CH633720A5 (en) VALVE, PARTICULARLY FOR FIRE PROTECTION INSTALLATIONS.
FR3052079A1 (en) LAUNCH OF FIRE FIGHTING
EP1869534B1 (en) Valve adjusting device for fire extinguishing systems
BE1019460A3 (en) FIRE EXTINGUISHER VALVE HEAD AND USE THEREOF.
EP0658490B1 (en) Depressible valve for vaporising a liquid and pressurised container provided with such a valve
FR2622841A1 (en) INDUSTRIAL PEN FOR USING INKS OR PAINTS WITH VOLATILE SOLVENTS CONDITIONED IN SEALED REFILLS
WO1991007334A1 (en) Control valve
FR2599827A1 (en) Rifle barrel cleaning system
EP3544888A1 (en) Quick refill for an inflation device
EP0792665B1 (en) Liquid spraying fire extinguisher
EP0507664B1 (en) Security fixture for the distribution head of an extinguisher
EP0738523B1 (en) Safety against rearming for fire extinguishing heads
WO2017103405A1 (en) Device for supplying a pressurized material and fire extinguisher including such a device
BE519366A (en)
BE864447R (en) DEVICE FOR DISTRIBUTING A LIQUID IN FINALLY DIVIDED FORM
FR2823444A1 (en) FIRE EXTINGUISHER FOR TRAINING FIRE FIGHTING PERSONNEL
WO2015181473A1 (en) Connection system for connecting to devices with fluid connection between the two devices
FR2610850A1 (en) Device for pressurising an atomising chamber, especially for an extinguisher
FR2699635A1 (en) Distributor valve for aerosol container
EP4444392A1 (en) Device for nasal delivery of fluid product

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11748955

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 06.06.2013)

122 Ep: pct application non-entry in european phase

Ref document number: 11748955

Country of ref document: EP

Kind code of ref document: A1