EP3411653B1 - Sound wave absorption module and device comprising same - Google Patents

Sound wave absorption module and device comprising same Download PDF

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Publication number
EP3411653B1
EP3411653B1 EP16813006.0A EP16813006A EP3411653B1 EP 3411653 B1 EP3411653 B1 EP 3411653B1 EP 16813006 A EP16813006 A EP 16813006A EP 3411653 B1 EP3411653 B1 EP 3411653B1
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EP
European Patent Office
Prior art keywords
absorption
module
sound wave
soundwave
central conduit
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Not-in-force
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EP16813006.0A
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German (de)
French (fr)
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EP3411653A1 (en
Inventor
Florent Cheinet
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FCD
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FCD
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/30—Silencers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/32—Muzzle attachments or glands
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Definitions

  • the invention relates to a sound wave absorption module and to a device comprising it as a silencer, as described in EP0107273 A .
  • the projectile In the case of handguns or cannons, the projectile, whether a bullet or a shell, coming out of the barrel of the weapon produces a sound wave, called a mouthwash, forming the detonation.
  • This muzzle wave is a wave of air pressure produced by the projectile that pushes the air out of the barrel: when the air thus pushed out of the barrel end, it relaxes suddenly and creates this detonation.
  • this mouth wave is an instantaneous phenomenon, without continuity, whose amplitude is very high for a very short time, then disappears.
  • the muzzle wave is dependent on the dimensions and shapes of the projectile head pushing the air out of the barrel. In order to minimize the detonation heard, it is necessary to optimally absorb the maximum of sound wavelengths forming the mouth wave thus generated.
  • a sound wave such as a mouthwash
  • a housing extending at a distance and facing the central duct coaxially, and an absorption chamber delimited in part by the central duct and the housing.
  • THE absorption chamber then comprises a sound wave damper such as air (the device then forms a simple hollow cylinder), or a flexible material such as rock wool or any other foam-type material, or a shock absorber solid like a stack of metallic sound baffles like slightly domed metal washers.
  • An object of the invention is to provide a module, and therefore a device for absorbing a sound wave that is simple to use, adaptable while being lightweight and compact.
  • a sound wave absorption module comprising a perforated central duct in which a sound wave is intended to propagate, a casing extending at a distance and facing the centrally coaxial duct, an absorption chamber delimited in part by the central duct and the casing, and an elastically deformable pocket positioned in the absorption chamber so as to surround at least part of the central duct, the pocket containing a absorption fluid.
  • the module is simple.
  • the elastically removable deformable pouch is compact and can be filled before use with a fluid such as water from a gourd. This also allows an on-the-fly adaptation of the absorption module.
  • the module according to the invention is simple to use, adaptable while being lightweight and compact
  • a device for absorbing a sound wave comprising a gun in which a sound wave is intended to propagate, and an absorption module for a sound wave having at least one sound wave.
  • the central duct forming the barrel.
  • the absorption module of a sound wave 1 according to the invention is of generally cylindrical shape, here of revolution. It comprises an outer housing 10 having a first end 11 and a second end 12. The housing 10 delimits externally an absorption chamber 40.
  • the absorption chamber is internally delimited by a central perforated conduit 20.
  • the central conduit 20 is delimited by a wall 21.
  • the wall 21 has through holes for establishing fluid communication between the central duct 20 and the absorption chamber 40.
  • a diameter of the central duct 20 is greater, slightly, than that of a barrel on which it is installed.
  • the openings of the central duct 20 made by the through orifices of the wall 21 allow the passage of the mouthwave, generated during the expulsion of the projectile from the barrel, in the absorption chamber 40.
  • the wall 21 is partly made by a net with a rigid mesh such as a grid.
  • the absorption module of a sound wave 1 comprises a pocket 30 elastically deformable.
  • This pocket 30 is removably positioned in the absorption chamber 40 so as to surround all or part of the central duct 20.
  • the pocket 30 is, prior to its positioning within the absorption chamber 40, filled with a fluid 31.
  • the fluid 31 is a liquid fluid having a viscosity adapted to the mouthwave to be absorbed.
  • the fluid 31 is water.
  • a user of the absorption module of a sound wave 1 according to the invention can use the water of its gourd or a water point nearby (puddle, river, lake, ...) .
  • the pocket 30 is made of flexible plastic material such as a plastic bag for example.
  • the pocket 30 is made of silicone or latex.
  • the pocket 30 is a condom.
  • the pocket 30 is thus easily transportable and compact.
  • the user refills the bag 30 with a fluid 31. Then, he introduces the bag thus filled into the absorption chamber 40. one 12 of the ends 11,12 of the housing 10 which is open, the other end 11 being closed. Optionally, a closure cover (not shown) can be positioned on the open end 11 of the housing 10. The absorption module of a sound wave 1 according to the invention is then ready to be positioned on a gun.
  • Such a structure of the absorption module of a sound wave 1 according to the invention makes it possible to use a more or less viscous liquid as a shock absorber for sound waves. Indeed, the liquids have a strong absorption of the energy of the sound waves.
  • the structure of the absorption module of a sound wave 1 according to the invention has the advantage of being simple, easily adaptable to the mouthwave to be absorbed, and therefore space-saving.
  • a device for absorbing a sound wave according to the invention 100 comprises a single absorption module of a sound wave 1 according to the invention.
  • the absorption device of a sound wave according to the invention 100 comprises a gun 120 which is formed by the central duct 20 of the absorption module of a sound wave 1 according to the invention.
  • the absorption device of a sound wave according to the invention 100 comprises a series of absorption modules 1,2,3,4 abutted to each other so that the barrel 120 is formed of a succession of conduits central absorption modules of a sound wave.
  • the series of modules absorption comprises four absorption modules 1,2,3,4 including an absorption module of a sound wave 1 according to the invention.
  • the absorption module of a sound wave 1 according to the invention has a length 14 and an external diameter d4.
  • the second absorption module 2 has a length l1 and an external diameter d1.
  • the third absorption module 3 has a length l2 and an external diameter d2.
  • the fourth absorption module 3 has a length 13 and an external diameter d3.
  • the lengths 11, 12, 13 and 14, and the diameters d1, d2, d3 and d4 may be different from each other.
  • the number and order of assembly of the absorption modules to form the absorption device of a sound wave according to the invention 100 is not limited to the example given in FIG. figure 3 .
  • Such modularity in the types and dimensions of absorption modules and / or the number of absorption modules assembled to form the absorption device of a sound wave according to the invention 100 makes it possible to optimally obtain an absorption (or attenuation) maximum of the muzzle wave generated by a given projectile for a given ejection speed.

Description

L'invention concerne un module d'absorption d'une onde sonore, ainsi qu'un dispositif le comportant comme un silencieux , tels que décrits dans EP0107273 A .The invention relates to a sound wave absorption module and to a device comprising it as a silencer, as described in EP0107273 A .

Dans le cadre des armes à feu de type armes de poing ou canon, le projectile, que ce soit une balle ou un obus, sortant du canon de l'arme produit une onde sonore, appelée onde de bouche, formant la détonation. Cette onde de bouche est une onde de pression d'air produite par le projectile qui pousse l'air hors du canon : lorsque l'air ainsi poussé sort de l'extrémité du canon, il se détend brusquement et crée cette détonation.In the case of handguns or cannons, the projectile, whether a bullet or a shell, coming out of the barrel of the weapon produces a sound wave, called a mouthwash, forming the detonation. This muzzle wave is a wave of air pressure produced by the projectile that pushes the air out of the barrel: when the air thus pushed out of the barrel end, it relaxes suddenly and creates this detonation.

Il est possible de décomposer cette onde de bouche comme une somme des Dirac de longueurs d'onde variables. En effet, l'onde de bouche est un phénomène instantané, sans continuité, dont l'amplitude est très élevée sur un instant très court, puis disparaît. De plus, l'onde de bouche est dépendante des dimensions et formes de la tête du projectile poussant l'air hors du canon. Afin d'atténuer au maximum la détonation entendue, il est nécessaire d'absorber de manière optimale le maximum de longueurs d'onde sonore formant l'onde de bouche ainsi générée.It is possible to break down this mouth wave as a sum of Diracs of varying wavelengths. Indeed, the mouthwave is an instantaneous phenomenon, without continuity, whose amplitude is very high for a very short time, then disappears. In addition, the muzzle wave is dependent on the dimensions and shapes of the projectile head pushing the air out of the barrel. In order to minimize the detonation heard, it is necessary to optimally absorb the maximum of sound wavelengths forming the mouth wave thus generated.

Actuellement, il existe des dispositifs d'absorption d'une onde sonore, comme une onde de bouche, positionnés en sortie du canon de l'arme et comportant un conduit central ajouré dans lequel l'onde de bouche (et le projectile) se propage, un carter s'étendant à distance et en regard du conduit central de manière coaxiale, et une chambre d'absorption délimitée en partie par le conduit central et le carter. LA chambre d'absorption comporte alors un amortisseur d'onde sonore comme de l'air (le dispositif forme alors un cylindre creux simple), ou un matériau souple comme de la laine de roche ou tout autre matériau de type mousse, ou encore un amortisseur solide comme un empilement de déflecteurs sonores métalliques comme des rondelles métalliques légèrement bombées.Currently, there are devices for absorbing a sound wave, such as a mouthwash, positioned at the output of the barrel of the weapon and having a perforated central duct in which the mouthwash (and the projectile) is propagated. , a housing extending at a distance and facing the central duct coaxially, and an absorption chamber delimited in part by the central duct and the housing. THE absorption chamber then comprises a sound wave damper such as air (the device then forms a simple hollow cylinder), or a flexible material such as rock wool or any other foam-type material, or a shock absorber solid like a stack of metallic sound baffles like slightly domed metal washers.

Toutefois, Les dispositifs d'absorption d'une onde sonore existant ne sont pas complètement satisfaisants :

  • Ils sont conformés définitivement à un seul type de projectile, il est donc nécessaire d'en avoir plusieurs adaptés à chaque types de projectiles utilisés. Cela augmente l'encombrement et le nombre de dispositifs d'absorption d'une onde sonore à transporter pour un tireur.
  • Ils sont lourds et diminuent la maniabilité de l'arme dans le cas d'une arme de poing comme un fusil ou un pistolet.
However, the absorption devices of an existing sound wave are not completely satisfactory:
  • They are definitely conformed to a single type of projectile, so it is necessary to have several adapted to each type of projectiles used. This increases the bulk and the number of absorption devices of a sound wave to be transported for a shooter.
  • They are heavy and reduce the maneuverability of the weapon in the case of a handgun such as a rifle or a pistol.

Un but de l'invention est de fournir un module, et donc un dispositif, d'absorption d'une onde sonore qui soit simple à utiliser, adaptable tout en étant léger et peu encombrant.An object of the invention is to provide a module, and therefore a device for absorbing a sound wave that is simple to use, adaptable while being lightweight and compact.

A cette fin, il est prévu, selon l'invention, un module d'absorption d'une onde sonore comportant un conduit central ajouré dans lequel une onde sonore est destinée à se propager, un carter s'étendant à distance et en regard du conduit central de manière coaxiale, une chambre d'absorption délimitée en partie par le conduit central et le carter, et une poche déformable élastiquement positionnée dans la chambre d'absorption de sorte à entourer au moins en partie le conduit central, la poche contenant un fluide d'absorption.For this purpose, it is provided, according to the invention, a sound wave absorption module comprising a perforated central duct in which a sound wave is intended to propagate, a casing extending at a distance and facing the centrally coaxial duct, an absorption chamber delimited in part by the central duct and the casing, and an elastically deformable pocket positioned in the absorption chamber so as to surround at least part of the central duct, the pocket containing a absorption fluid.

Ainsi, le module est simple. La poche déformable élastiquement amovible est peu encombrante et peut être remplie avant utilisation avec un fluide comme de l'eau d'une gourde. Cela permet en plus une adaptation à la volée du module d'absorption. Ainsi le module selon l'invention est simple à utiliser, adaptable tout en étant léger et peu encombrantThus, the module is simple. The elastically removable deformable pouch is compact and can be filled before use with a fluid such as water from a gourd. This also allows an on-the-fly adaptation of the absorption module. Thus the module according to the invention is simple to use, adaptable while being lightweight and compact

Avantageusement, mais facultativement, le module d'absorption selon l'invention présente au moins l'une des caractéristiques techniques suivantes additionnelles :

  • le fluide est un liquide, notamment de l'eau ;
  • le conduit central comporte une paroi comprenant des ouvertures traversantes de sorte à mettre en communication fluidique la chambre d'absorption et le conduit central ;
  • la paroi est au moins en partie formée par un filet à maillage rigide ;
  • la poche est réalisée en matière plastique flexible ; et,
  • la poche est réalisée en latex ou en silicone.
Advantageously, but optionally, the absorption module according to the invention has at least one of the following additional technical characteristics:
  • the fluid is a liquid, especially water;
  • the central duct has a wall comprising through openings so as to put in fluid communication the absorption chamber and the central duct;
  • the wall is at least partly formed by a rigid mesh net;
  • the bag is made of flexible plastic material; and,
  • the bag is made of latex or silicone.

Il est aussi prévu, selon l'invention, un dispositif d'absorption d'une onde sonore comportant un canon dans lequel une onde sonore est destinée à se propager , et un module d'absorption d'une onde sonore présentant au moins l'une des caractéristiques techniques précédentes, le conduit central formant le canon.According to the invention, there is also provided a device for absorbing a sound wave comprising a gun in which a sound wave is intended to propagate, and an absorption module for a sound wave having at least one sound wave. one of the preceding technical characteristics, the central duct forming the barrel.

Avantageusement, mais facultativement, le dispositif d'absorption selon l'invention présente au moins l'une des caractéristiques techniques suivantes additionnelles :

  • le dispositif comporte une série de modules d'absorption d'une onde sonore aboutés les uns aux autres de sorte que le canon est formé d'une succession des conduits centraux des modules ;
  • les modules d'absorption présentent des dimensions différentes, notamment des longueurs et/ou des diamètres différents ; et,
  • chaque module d'absorption comporte, dans la chambre d'absorption, un élément amortisseur choisi parmi un amortisseur mousse, un amortisseur solide et un amortisseur fluide.
Advantageously, but optionally, the absorption device according to the invention has at least one of the following additional technical characteristics:
  • the device comprises a series of sound wave absorption modules abutting each other. others so that the barrel is formed of a succession of central ducts of the modules;
  • the absorption modules have different dimensions, in particular of different lengths and / or diameters; and,
  • each absorption module comprises, in the absorption chamber, a damping element selected from a foam damper, a solid damper and a fluid damper.

D'autres avantages et caractéristiques de l'invention apparaîtront lors de la description ci-après d'un mode de réalisation. Aux dessins annexés :

  • la figure 1 est une vue tridimensionnelle schématique d'un module d'absorption d'une onde sonore selon l'invention;
  • la figure 2 est une vue schématique en coupe selon II-II du module de la figure 1 ; et,
  • la figure 3 est une vue de coté d'un dispositif d'absorption d'une onde sonore selon l'invention comportant un module selon les figures 1 et 2.
Other advantages and features of the invention will become apparent in the following description of an embodiment. In the accompanying drawings:
  • the figure 1 is a schematic three-dimensional view of an absorption module of a sound wave according to the invention;
  • the figure 2 is a schematic sectional view along II-II of the module of the figure 1 ; and,
  • the figure 3 is a side view of a device for absorbing a sound wave according to the invention comprising a module according to the Figures 1 and 2 .

En référence à la figure 1 et à la figure 2, nous allons décrire en détails un mode de réalisation d'un module d'absorption d'une onde sonore 1 selon l'invention. Le module d'absorption d'une onde sonore 1 selon l'invention est de forme générale cylindrique, ici de révolution. Il comporte un carter 10 externe comportant une première extrémité 11 et une deuxième extrémité 12. Le carter 10 délimite extérieurement une chambre d'absorption 40. La chambre d'absorption est délimitée intérieurement par un conduit central 20 ajouré. Le conduit central 20 est délimité par une paroi 21. La paroi 21 comporte des orifices traversants permettant d'établir une communication fluidique entre le conduit central 20 et la chambre d'absorption 40. Un diamètre du conduit central 20 est supérieur, légèrement, à celui d'un canon sur lequel il est installé. Les ajours du conduit central 20 réalisés par les orifices traversants de la paroi 21 permettent le passage de l'onde de bouche, générée lors de l'expulsion du projectile du canon, dans la chambre d'absorption 40.With reference to the figure 1 and at the figure 2 , we will describe in detail an embodiment of an absorption module of a sound wave 1 according to the invention. The absorption module of a sound wave 1 according to the invention is of generally cylindrical shape, here of revolution. It comprises an outer housing 10 having a first end 11 and a second end 12. The housing 10 delimits externally an absorption chamber 40. The absorption chamber is internally delimited by a central perforated conduit 20. The central conduit 20 is delimited by a wall 21. The wall 21 has through holes for establishing fluid communication between the central duct 20 and the absorption chamber 40. A diameter of the central duct 20 is greater, slightly, than that of a barrel on which it is installed. The openings of the central duct 20 made by the through orifices of the wall 21 allow the passage of the mouthwave, generated during the expulsion of the projectile from the barrel, in the absorption chamber 40.

Par exemple, la paroi 21 est en partie réalisée par un filet à maillage rigide comme un grillage.For example, the wall 21 is partly made by a net with a rigid mesh such as a grid.

D'autre part, le module d'absorption d'une onde sonore 1 selon l'invention comporte une poche 30 déformable élastiquement. Cette poche 30 est positionnée de manière amovible dans la chambre d'absorption 40 de sorte à entourer en toute ou partie le conduit central 20. La poche 30 est, préalablement à son positionnement au sein de la chambre d'absorption 40, remplie avec un fluide 31. Le fluide 31 est un fluide liquide présentant une viscosité adaptée à l'onde de bouche à absorber. De manière pratique et simple, le fluide 31 est de l'eau. En effet, un utilisateur du module d'absorption d'une onde sonore 1 selon l'invention peut utiliser l'eau de sa gourde ou encore d'un point d'eau à proximité (flaque, rivière, lac,...).On the other hand, the absorption module of a sound wave 1 according to the invention comprises a pocket 30 elastically deformable. This pocket 30 is removably positioned in the absorption chamber 40 so as to surround all or part of the central duct 20. The pocket 30 is, prior to its positioning within the absorption chamber 40, filled with a fluid 31. The fluid 31 is a liquid fluid having a viscosity adapted to the mouthwave to be absorbed. Conveniently and simply, the fluid 31 is water. Indeed, a user of the absorption module of a sound wave 1 according to the invention can use the water of its gourd or a water point nearby (puddle, river, lake, ...) .

La poche 30 est réalisée matière plastique flexible comme un sac en plastique par exemple. En variante de réalisation, la poche 30 est réalisée en silicone ou en latex. Par exemple, la poche 30 est un préservatif.The pocket 30 is made of flexible plastic material such as a plastic bag for example. In alternative embodiment, the pocket 30 is made of silicone or latex. For example, the pocket 30 is a condom.

La poche 30 est ainsi facilement transportable et peu encombrante.The pocket 30 is thus easily transportable and compact.

Lors d'une utilisation du module d'absorption d'une onde sonore 1 selon l'invention, l'utilisateur rempli la poche 30 d'un fluide 31. Puis, il introduit la poche ainsi remplie dans la chambre d'absorption 40 par l'une 12 des extrémités 11,12 du carter 10 qui est ouverte, l'autre extrémité 11 étant fermée. Eventuellement, un couvercle de fermeture (non représenté) peut être position sur l'extrémité 11 ouverte du carter 10. Le module d'absorption d'une onde sonore 1 selon l'invention est alors prêt à être positionné sur un canon.When using the absorption module of a sound wave 1 according to the invention, the user refills the bag 30 with a fluid 31. Then, he introduces the bag thus filled into the absorption chamber 40. one 12 of the ends 11,12 of the housing 10 which is open, the other end 11 being closed. Optionally, a closure cover (not shown) can be positioned on the open end 11 of the housing 10. The absorption module of a sound wave 1 according to the invention is then ready to be positioned on a gun.

Une telle structure du module d'absorption d'une onde sonore 1 selon l'invention permet d'utiliser un liquide plus ou moins visqueux comme amortisseur d'ondes sonores. En effet, les liquides présentent une forte absorption de l'énergie des ondes sonores. De plus, la structure du module d'absorption d'une onde sonore 1 selon l'invention présente l'avantage d'être simple, facilement adaptable à l'onde de bouche à absorber, et par conséquent peu encombrant.Such a structure of the absorption module of a sound wave 1 according to the invention makes it possible to use a more or less viscous liquid as a shock absorber for sound waves. Indeed, the liquids have a strong absorption of the energy of the sound waves. In addition, the structure of the absorption module of a sound wave 1 according to the invention has the advantage of being simple, easily adaptable to the mouthwave to be absorbed, and therefore space-saving.

Dans un premier mode de réalisation, un dispositif d'absorption d'une onde sonore selon l'invention 100 comporte un seul module d'absorption d'une onde sonore 1 selon l'invention. Le dispositif d'absorption d'une onde sonore selon l'invention 100 comporte un canon 120 qui est formé par le conduit central 20 du module d'absorption d'une onde sonore 1 selon l'invention.In a first embodiment, a device for absorbing a sound wave according to the invention 100 comprises a single absorption module of a sound wave 1 according to the invention. The absorption device of a sound wave according to the invention 100 comprises a gun 120 which is formed by the central duct 20 of the absorption module of a sound wave 1 according to the invention.

Dans une variante de réalisation, illustré en figure 3, le dispositif d'absorption d'une onde sonore selon l'invention 100 comporte une série de modules d'absorption 1,2,3,4 aboutés les uns aux autres de sorte que le canon 120 est formé d'une succession des conduits centraux des modules d'absorption d'une onde sonore. Ici, la série de modules d'absorption comporte quatre modules d'absorption 1,2,3,4 dont un module d'absorption d'une onde sonore 1 selon l'invention. Le module d'absorption d'une onde sonore 1 selon l'invention présente une longueur 14 et un diamètre externe d4. Le deuxième module d'absorption 2 présente une longueur l1 et un diamètre externe d1. Le troisième module d'absorption 3 présente une longueur l2 et un diamètre externe d2. Enfin, le quatrième module d'absorption 3 présente une longueur l3 et un diamètre externe d3. Les longueurs l1,l2,l3 et l4, ainsi que les diamètres d1,d2,d3 et d4 peuvent être différents les uns des autres.In an alternative embodiment, illustrated in figure 3 , the absorption device of a sound wave according to the invention 100 comprises a series of absorption modules 1,2,3,4 abutted to each other so that the barrel 120 is formed of a succession of conduits central absorption modules of a sound wave. Here, the series of modules absorption comprises four absorption modules 1,2,3,4 including an absorption module of a sound wave 1 according to the invention. The absorption module of a sound wave 1 according to the invention has a length 14 and an external diameter d4. The second absorption module 2 has a length l1 and an external diameter d1. The third absorption module 3 has a length l2 and an external diameter d2. Finally, the fourth absorption module 3 has a length 13 and an external diameter d3. The lengths 11, 12, 13 and 14, and the diameters d1, d2, d3 and d4 may be different from each other.

D'autre part, chacun des modules d'absorptions comprennent un carter et un conduit central délimitant tous deux une chambre d'absorption. La chambre d'absorption de chacun des modules d'absorption comporte un amortisseur d'une onde sonore. L'amortisseur d'une onde sonore est choisi indépendamment pour chacun des modules d'absorption parmi :

  • une poche 30 rempli d'un fluide 31 pour réaliser un module d'absorption d'une onde sonore 1 selon l'invention ;
  • un amortisseur solide connu en soi comme un empilement de déflecteurs sonores métalliques comme des rondelles métalliques légèrement bombées ;
  • un amortisseur souple comportant un matériau souple comme de la laine de roche ou tout autre matériau de type mousse, connu en soit.
On the other hand, each of the absorption modules comprises a casing and a central duct both delimiting an absorption chamber. The absorption chamber of each of the absorption modules comprises a damper of a sound wave. The damper of a sound wave is independently selected for each of the absorption modules from:
  • a pocket 30 filled with a fluid 31 for producing an absorption module of a sound wave 1 according to the invention;
  • a solid damper known per se as a stack of metallic sound baffles such as slightly domed metal washers;
  • a flexible damper comprising a flexible material such as rock wool or any other foam material known in itself.

Le nombre et l'ordre d'assemblage des modules d'absorption pour former le dispositif d'absorption d'une onde sonore selon l'invention 100 n'est pas limité à l'exemple donnée en figure 3.The number and order of assembly of the absorption modules to form the absorption device of a sound wave according to the invention 100 is not limited to the example given in FIG. figure 3 .

Une telle modularité dans les types et dimensions de modules d'absorption et/ou le nombre de modules d'absorption assemblés pour formé le dispositif d'absorption d'une onde sonore selon l'invention 100 permet d'obtenir de manière optimale une absorption (ou une atténuation) maximale de l'onde de bouche générée par un projectile donné pour une vitesse d'éjection donnée.Such modularity in the types and dimensions of absorption modules and / or the number of absorption modules assembled to form the absorption device of a sound wave according to the invention 100 makes it possible to optimally obtain an absorption (or attenuation) maximum of the muzzle wave generated by a given projectile for a given ejection speed.

Bien entendu, il est possible d'apporter à l'invention de nombreuses modifications comprises dans le cadre défini par les revendications annexées.Of course, it is possible to make numerous modifications to the invention within the scope defined by the appended claims.

Claims (10)

  1. Module for absorbing a soundwave (1) comprising a perforated central conduit (20), wherein a soundwave is intended to be propagated, a casing (10) extending at a distance and facing the central conduit coaxially, and an absorption chamber (40) partially delimited by the central conduit and the casing, characterised in that it further comprises an elastically deformable pocket (30) positioned in the absorption chamber so as to surround at least partially the central conduit, the pocket containing an absorption fluid (31).
  2. Module according to claim 1, characterised in that the fluid is a liquid, in particular, water.
  3. Module according to one of claims 1 to 2, characterised in that the central conduit comprises a wall (21) comprising through openings so as to fluidically connect the absorption chamber and the central conduit.
  4. Module according to claim 3, characterised in that the wall is at least partially formed by a rigid mesh netting.
  5. Module according to one of claims 1 to 4, characterised in that the pocket is made of flexible plastic material.
  6. Module according to one of claims 1 to 4, characterised in that the pocket is made of latex or silicone.
  7. Device for absorbing a soundwave (100) comprising a cannon (120), wherein a soundwave is intended to be propagated, characterised in that it comprises a module for absorbing a soundwave (1) according to one of claims 1 to 6, the central conduit forming the cannon.
  8. Device according to claim 7, characterised in that it comprises a series of modules for absorbing a soundwave (1, 2, 3, 4) attached to one another such that the cannon is formed of a succession of central conduits of the modules.
  9. Device according to claim 8, characterised in that the absorption modules have different dimensions, in particular different lengths and/or diameters.
  10. Device according to one of claims 8 to 9, characterised in that each absorption module comprises, in the absorption chamber, an absorbing element selected from among a foam absorber, a solid absorber and a fluid absorber.
EP16813006.0A 2016-02-02 2016-11-22 Sound wave absorption module and device comprising same Not-in-force EP3411653B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1650796A FR3047347B1 (en) 2016-02-02 2016-02-02 SOUND WAVE ABSORPTION MODULE AND DEVICE COMPRISING SAME
PCT/FR2016/053055 WO2017134354A1 (en) 2016-02-02 2016-11-22 Sound wave absorption module and device comprising same

Publications (2)

Publication Number Publication Date
EP3411653A1 EP3411653A1 (en) 2018-12-12
EP3411653B1 true EP3411653B1 (en) 2019-11-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16813006.0A Not-in-force EP3411653B1 (en) 2016-02-02 2016-11-22 Sound wave absorption module and device comprising same

Country Status (5)

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US (1) US20190041154A1 (en)
EP (1) EP3411653B1 (en)
ES (1) ES2760937T3 (en)
FR (1) FR3047347B1 (en)
WO (1) WO2017134354A1 (en)

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US10907920B2 (en) * 2017-08-22 2021-02-02 Incodema3D, LLC Sound suppressor for a firearm
CN114008368A (en) * 2019-04-23 2022-02-01 佐治亚技术研究公司 System and method for water hammer arrestor

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DE2060751C3 (en) * 1970-12-10 1973-11-08 Mannesmann& Keppel Electronics, 5630 Remscheid Liquid flow regulator
SE428604B (en) * 1981-10-21 1983-07-11 Foerenade Fabriksverken PRESSURE MUTTER FOR RECYCLING Weapons
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DE3300499A1 (en) * 1983-01-08 1984-07-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Sound absorber for passages through which liquids flow
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Also Published As

Publication number Publication date
WO2017134354A1 (en) 2017-08-10
FR3047347A1 (en) 2017-08-04
ES2760937T3 (en) 2020-05-18
FR3047347B1 (en) 2018-02-02
US20190041154A1 (en) 2019-02-07
EP3411653A1 (en) 2018-12-12

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