EP3530355B1 - Dispensing head with stepped whirl chamber for a dispensing system - Google Patents

Dispensing head with stepped whirl chamber for a dispensing system Download PDF

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Publication number
EP3530355B1
EP3530355B1 EP19157320.3A EP19157320A EP3530355B1 EP 3530355 B1 EP3530355 B1 EP 3530355B1 EP 19157320 A EP19157320 A EP 19157320A EP 3530355 B1 EP3530355 B1 EP 3530355B1
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EP
European Patent Office
Prior art keywords
dispensing
wall
axis
dispensing head
core
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EP19157320.3A
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German (de)
French (fr)
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EP3530355A1 (en
Inventor
Thomas NEVENS
Jean-Pierre Songbe
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Albea Services SAS
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Albea Services SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3463—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels extending outwardly, e.g. radially from the inside to the outside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3442—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3489—Nozzles having concentric outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1052—Actuation means

Definitions

  • the invention relates to a spray device, in particular for a system for dispensing a product provided with a push button.
  • the distribution system is intended to equip bottles used in perfumery, cosmetics or for pharmaceutical treatments.
  • this type of bottle contains a product which is returned by the distribution system comprising a device for withdrawing said product, said system being actuated for example by a push button to allow the product to be sprayed.
  • the sampling device comprises a pump or a manually actuated valve, for example by means of the push button.
  • Such push buttons are conventionally made in at least two parts, including an actuating body and a spray nozzle which are assembled to one another.
  • the nozzle generally comprises a swirl chamber provided with a dispensing orifice, as well as at least one supply channel for said chamber.
  • the sampling device withdraws the product from the vial through a dip tube, and pushes it inside the conduit arranged in the pusher, which is the actuating element of the sampling device.
  • This conduit opens into a so-called vortex chamber intended to make the liquid turn very quickly and therefore to give it speed and the effects of centrifugal force.
  • This vortex chamber is extended at its center by an outlet orifice through which the product escapes to the outside at high speed. Driven by this speed, and subjected to centrifugal forces, the liquid splits into droplets and forms an aerosol.
  • the size of the droplets from the vortex chamber depends in part on the force and speed with which the user operates the pump by pressing the push button with his finger, as the induced pressure depends on it.
  • one technology consists in using a vortex chamber of revolution.
  • the flow turns in the chamber in the form of a sheet which impacts itself after its exit through the distribution orifice.
  • This technology is used for non-viscous or low-viscosity products.
  • the impaction of the webs does not occur correctly, for example when the viscosity is greater than 150 mPa.s. This results in an excessively large size of the droplets and the cone of sprayed product is then of poor quality.
  • the steps make it possible to improve the impaction of the layers of product and to obtain droplets of small dimensions, and this with a viscous product.
  • the dimensions of the droplets are suitable in the major part of the sprayed cone, which makes it possible to obtain a cone of fine droplets of product.
  • a central area of the cone does not have the required requirements.
  • This central zone is located immediately downstream of the dispensing orifice in the direction of movement of the product, and extends in a substantially rectilinear manner.
  • the droplets have dimensions much larger than in the rest of the cone. It is common for a continuous jet in a central area to coexist with the peripheral droplets. In other words, the dimensions of the droplets are not uniform in the cone.
  • a user then receives on his hands or another part of his body, the product in the form of a continuous jet in the central zone, and this in a cone of fine droplets.
  • the experience of the product is therefore impaired. This is all the more true for a clientele whose expectations are often high.
  • this reflects a deplorable image of the product and its manufacturer despite the cosmetic qualities it conceals.
  • the invention aims to resolve this drawback.
  • This dispensing head has the advantage of eliminating the continuous jet which appears in the central zone. This is made possible by the combined action of the converging part provided with steps and a core forming at least one fluid path in which the product encounters obstacles. This is also made possible by the combined action of the converging part and a core provided with a step as well as a converging part and a core, both provided with steps.
  • the dispensing head is particularly advantageous when the product exhibits a non-Newtonian shear-thinning rheological behavior. This type of fluid becomes fluid as the shear rate increases. This type of product is widely used in the cosmetics industry.
  • the central zone then comprises droplets whose dimensions are substantially identical throughout the cone.
  • a dispensing head 1 in particular for a dispensing system (not shown) of a fluid product.
  • the distribution system comprises the distribution head 1 and a sampling device (not shown) provided with a supply tube inserted into a well 2 located in the distribution head 1.
  • the dispensing head 1 comprises a body 3.
  • the body 3 defines a bearing wall 4 located on an upper part thereof.
  • the support wall 4 allows the user to press the dispensing head 1 in order to spray the product.
  • the body 3 defines a housing 6.
  • the housing 6 is in fluid communication with the well 2. This fluid communication is carried out by means of an internal channel 27 formed in the body 3.

Description

L'invention concerne un dispositif de pulvérisation, notamment pour un système de distribution d'un produit muni d'un bouton poussoir.The invention relates to a spray device, in particular for a system for dispensing a product provided with a push button.

Dans une application particulière, le système de distribution est destiné à équiper des flacons utilisés en parfumerie, en cosmétique ou pour des traitements pharmaceutiques. En effet, ce type de flacon contient un produit qui est restitué par le système de distribution comprenant un dispositif de prélèvement dudit produit, ledit système étant actionné par exemple par un bouton poussoir pour permettre la pulvérisation du produit. En général, le dispositif de prélèvement comprend une pompe ou une valve à actionnement manuel, par exemple par l'intermédiaire du bouton poussoir.In a particular application, the distribution system is intended to equip bottles used in perfumery, cosmetics or for pharmaceutical treatments. In fact, this type of bottle contains a product which is returned by the distribution system comprising a device for withdrawing said product, said system being actuated for example by a push button to allow the product to be sprayed. In general, the sampling device comprises a pump or a manually actuated valve, for example by means of the push button.

De tels boutons poussoirs sont classiquement réalisés en au moins deux parties, dont un corps d'actionnement et une buse de pulvérisation qui sont assemblés l'un à l'autre. La buse comprend généralement une chambre tourbillonnaire pourvue d'un orifice de distribution, ainsi qu'au moins un canal d'alimentation de ladite chambre.Such push buttons are conventionally made in at least two parts, including an actuating body and a spray nozzle which are assembled to one another. The nozzle generally comprises a swirl chamber provided with a dispensing orifice, as well as at least one supply channel for said chamber.

Le dispositif de prélèvement prélève le produit du flacon par un tube plongeur, et le pousse à l'intérieur du conduit aménagé dans le poussoir, qui est l'élément d'actionnement du dispositif de prélèvement. Ce conduit débouche dans une chambre dite tourbillonnaire destinée à faire tourner très rapidement le liquide et donc à lui donner de la vitesse et les effets de la force centrifuge. Cette chambre tourbillonnaire est prolongée en son centre par un orifice de sortie par lequel le produit s'échappe à l'extérieur avec une forte vitesse. Mû par cette vitesse, et soumis aux forces centrifuges, le liquide se fractionne en gouttelettes et forme un aérosol. La taille des gouttelettes issues de la chambre tourbillonnaire dépend en partie de la force et de la vitesse avec laquelle l'utilisateur actionne la pompe en appuyant sur le bouton poussoir avec son doigt, car la pression induite en dépend.
Afin d'assurer une bonne uniformité de la taille desdites gouttelettes, une technologie consiste à utiliser une chambre tourbillonnaire de révolution. Ainsi, le flot tourne dans la chambre sous forme de nappe qui s'impacte sur elle-même après sa sortie par l'orifice de distribution.The sampling device withdraws the product from the vial through a dip tube, and pushes it inside the conduit arranged in the pusher, which is the actuating element of the sampling device. This conduit opens into a so-called vortex chamber intended to make the liquid turn very quickly and therefore to give it speed and the effects of centrifugal force. This vortex chamber is extended at its center by an outlet orifice through which the product escapes to the outside at high speed. Driven by this speed, and subjected to centrifugal forces, the liquid splits into droplets and forms an aerosol. The size of the droplets from the vortex chamber depends in part on the force and speed with which the user operates the pump by pressing the push button with his finger, as the induced pressure depends on it.
In order to ensure good uniformity of the size of said droplets, one technology consists in using a vortex chamber of revolution. Thus, the flow turns in the chamber in the form of a sheet which impacts itself after its exit through the distribution orifice.

Cette technologie est utilisée pour des produits non ou peu visqueux.This technology is used for non-viscous or low-viscosity products.

Lorsque le produit est visqueux, typiquement de l'ordre de 50 ou 100 fois la viscosité de l'eau, l'impaction des nappes ne se produit pas correctement par exemple lorsque la viscosité est supérieure à 150 mPa.s. Il en résulte une taille trop importante des gouttelettes et le cône de produit pulvérisé est alors de mauvaise qualité.When the product is viscous, typically of the order of 50 or 100 times the viscosity of water, the impaction of the webs does not occur correctly, for example when the viscosity is greater than 150 mPa.s. This results in an excessively large size of the droplets and the cone of sprayed product is then of poor quality.

Afin d'améliorer le cône de produit pulvérisé, lorsque le produit est visqueux, une technologie consiste à ajouter des marches dans la chambre tourbillonnaire.In order to improve the spray cone, when the product is viscous, one technology is to add steps in the vortex chamber.

Les marches permettent d'améliorer l'impaction des nappes de produit et d'obtenir des gouttelettes de petites dimensions, et ceci avec un produit visqueux.The steps make it possible to improve the impaction of the layers of product and to obtain droplets of small dimensions, and this with a viscous product.

Bien que cette technologie améliore le cône pulvérisé, un inconvénient subsiste. En effet, les dimensions des gouttelettes conviennent dans la majeure partie du cône pulvérisé ce qui permet d'obtenir un cône de gouttelettes fines de produit. Toutefois, une zone centrale du cône ne présente pas les exigences requises. Cette zone centrale se situe immédiatement en aval de l'orifice de distribution dans le sens de déplacement du produit, et s'étend de manière sensiblement rectiligne. Dans cette zone centrale, les gouttelettes ont des dimensions bien plus élevées que dans le reste du cône. Il est fréquent qu'un jet continu dans une zone centrale coexiste avec les gouttelettes périphériques. En d'autres termes, les dimensions des gouttelettes ne sont pas uniformes dans le cône.Although this technology improves the spray cone, one drawback remains. In fact, the dimensions of the droplets are suitable in the major part of the sprayed cone, which makes it possible to obtain a cone of fine droplets of product. However, a central area of the cone does not have the required requirements. This central zone is located immediately downstream of the dispensing orifice in the direction of movement of the product, and extends in a substantially rectilinear manner. In this central zone, the droplets have dimensions much larger than in the rest of the cone. It is common for a continuous jet in a central area to coexist with the peripheral droplets. In other words, the dimensions of the droplets are not uniform in the cone.

Un utilisateur reçoit alors sur ses mains ou une autre partie de son corps, du produit sous la forme d'un jet continu dans la zone centrale, et ceci dans un cône de gouttelettes fines. L'expérience du produit est par conséquent altérée. Ceci est d'autant plus vrai chez une clientèle dont les attentes sont souvent élevées. Outre la sensation désagréable que procure le jet continu, ceci renvoie une image déplorable du produit et de son fabricant en dépit des qualités cosmétiques qu'il recèle.A user then receives on his hands or another part of his body, the product in the form of a continuous jet in the central zone, and this in a cone of fine droplets. The experience of the product is therefore impaired. This is all the more true for a clientele whose expectations are often high. In addition to the unpleasant sensation provided by the continuous spray, this reflects a deplorable image of the product and its manufacturer despite the cosmetic qualities it conceals.

L'invention vise à résoudre cet inconvénient.The invention aims to resolve this drawback.

A cette fin, l'invention vise une tête de distribution, notamment pour un système de distribution d'un produit dans laquelle la tête comprend :

  • une buse de pulvérisation comprenant un orifice de distribution et une chambre tourbillonnaire débouchant dans l'orifice de distribution, la chambre tourbillonnaire comprenant une partie convergente, ladite chambre tourbillonnaire s'étendant suivant un axe, entre une extrémité amont et une extrémité aval dans le sens de déplacement du produit,
  • une enclume comprenant un noyau muni d'une paroi périphérique, le noyau logeant à l'intérieur de la chambre tourbillonnaire, la paroi périphérique et la partie convergente formant au moins un chemin fluidique dans lequel circule le produit,
la partie convergente comprenant une paroi intérieure de la buse, ladite paroi intérieure et/ou la paroi périphérique du noyau est munie d'une pluralité de marches, chaque marche étant définie par une paroi transversale qui s'étend dans un plan sécant à l'axe et une paroi longitudinale sensiblement parallèle à l'axe, les marches formant des obstacles dans le chemin fluidique, la buse comprenant au moins un canal d'alimentation de la chambre tourbillonnaire débouchant tangentiellement dans la chambre tourbillonnaire,
ladite tête étant caractérisée en ce que le noyau comprend une portion conique de révolution autour de l'axe (X) et définissant un sommet situé en regard de l'orifice de distribution.To this end, the invention relates to a dispensing head, in particular for a system for dispensing a product in which the head comprises:
  • a spray nozzle comprising a distribution orifice and a swirl chamber opening into the distribution orifice, the swirl chamber comprising a converging part, said swirl chamber extending along an axis, between an upstream end and a downstream end in the direction product movement,
  • an anvil comprising a core provided with a peripheral wall, the core accommodating inside the swirl chamber, the peripheral wall and the converging part forming at least one fluid path in which the product circulates,
the converging part comprising an inner wall of the nozzle, said inner wall and / or the peripheral wall of the core is provided with a plurality of steps, each step being defined by a transverse wall which extends in a plane secant to the axis and a longitudinal wall substantially parallel to the axis, the steps forming obstacles in the fluid path, the nozzle comprising at least one supply channel of the swirl chamber opening tangentially into the swirl chamber,
said head being characterized in that the core comprises a conical portion of revolution about the axis (X) and defining an apex located opposite the dispensing orifice.

Cette tête de distribution présente l'avantage d'éliminer le jet continu qui apparaît dans la zone centrale. Ceci est rendu possible par l'action combinée de la partie convergente munie de marches et d'un noyau formant au moins un chemin fluidique dans lequel le produit rencontre des obstacles. Ceci est aussi rendu possible par l'action combinée de la partie convergente et d'un noyau muni de marche ainsi que d'une partie convergente et d'un noyau, tous deux, munis de marches. La tête de distribution est particulièrement avantageuse lorsque le produit présente un comportement rhéologique non newtonien rhéofluidifiant. Ce type de fluide se fluidifie selon que le taux de cisaillement augmente. Ce type de produit est largement utilisé dans l'industrie cosmétique. La zone centrale comprend alors des gouttelettes dont les dimensions sont sensiblement identiques dans tout le cône.This dispensing head has the advantage of eliminating the continuous jet which appears in the central zone. This is made possible by the combined action of the converging part provided with steps and a core forming at least one fluid path in which the product encounters obstacles. This is also made possible by the combined action of the converging part and a core provided with a step as well as a converging part and a core, both provided with steps. The dispensing head is particularly advantageous when the product exhibits a non-Newtonian shear-thinning rheological behavior. This type of fluid becomes fluid as the shear rate increases. This type of product is widely used in the cosmetics industry. The central zone then comprises droplets whose dimensions are substantially identical throughout the cone.

Selon différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • la partie convergente comprend au moins un nez de marche situé à la jonction entre une paroi transversale et une paroi longitudinale, le nez de marche étant situé à une distance proximale comprise entre 70 et 250 micromètres de la paroi périphérique du noyau mesurée selon une droite imaginaire tracée depuis le nez de marche jusqu'à la paroi périphérique selon l'itinéraire le plus court ;
  • une longueur de la paroi longitudinale est comprise entre 30 et 250 micromètres mesurée selon l'axe ;
  • une longueur de la paroi transversale est comprise entre 30 et 350 micromètres mesurée selon un axe orthogonal à l'axe ;
  • les marches s'étendent depuis l'extrémité amont jusqu'à l'extrémité aval ;
  • la partie convergente comprend entre trois et quinze marches, de préférence quatre marches ;
  • la chambre tourbillonnaire comprend une préchambre en amont de ladite partie convergente ;
  • le ou les canaux débouchent dans la préchambre ;
  • la préchambre est annulaire ;
  • la hauteur du ou des canaux correspond à la hauteur de la préchambre ;
  • le sommet est plat et comprend une paroi plane sensiblement perpendiculaire à l'axe ;
  • le noyau est plein ;
  • l'orifice de distribution est uniquement relié de manière fluidique à la partie convergente de la buse.
L'invention concerne également un système de distribution d'un produit comprenant une tête de distribution tel que précédemment décrit.
L'invention sera mieux comprise à la lumière de la description suivante qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter, accompagnée des dessins joints dans lesquels :
  • la figure 1 est une vue en coupe en deux dimensions d'une tête de distribution selon l'invention ;
  • la figure 2 est une vue en coupe et en perspective d'une buse de distribution de la tête de distribution de la figure 1 ;
  • la figure 3 est une vue en perspective de la tête de distribution de la figure 1 sans la buse de distribution ;
  • la figure 4 est une vue en deux dimension de la buse de distribution des figures 1 et 2 ;
  • la figure 5 est une vue similaire à la figure 1 d'un deuxième mode de réalisation ;
  • la figure 6 est une vue similaire à la figure 2 du deuxième mode de réalisation de la figure 5 ;
  • la figure 7 est une vue similaire à la figure 3 du deuxième mode de réalisation ;
  • les figures 8a, 8b, 8c, 8d, 8e, 8f, 8g illustrent schématiquement des variantes de réalisation dans lesquelles la buse comprend des marches ;
  • les figures 9a, 9b, 9c, 8d, 9e, 9f, 9g illustrent schématiquement des variantes de réalisation dans lesquelles un noyau comprend des marches ;
  • les figures 10a, 10b, 10c, 10d, 10e, 10f, 10g illustrent schématiquement des variantes de réalisation dans lesquelles la buse et le noyau comprennent des marches.
According to different embodiments of the invention, which can be taken together or separately:
  • the converging part comprises at least one stair nosing located at the junction between a transverse wall and a longitudinal wall, the stair nosing being located at a proximal distance of between 70 and 250 micrometers from the peripheral wall of the core measured along an imaginary line traced from the stair nosing to the peripheral wall according to the shortest route;
  • a length of the longitudinal wall is between 30 and 250 micrometers measured along the axis;
  • a length of the transverse wall is between 30 and 350 micrometers measured along an axis orthogonal to the axis;
  • the steps extend from the upstream end to the downstream end;
  • the converging part comprises between three and fifteen steps, preferably four steps;
  • the vortex chamber comprises a prechamber upstream of said converging part;
  • the channel or channels open into the prechamber;
  • the prechamber is annular;
  • the height of the channel (s) corresponds to the height of the prechamber;
  • the top is flat and comprises a flat wall substantially perpendicular to the axis;
  • the nucleus is full;
  • the dispensing orifice is only fluidly connected to the converging part of the nozzle.
The invention also relates to a system for dispensing a product comprising a dispensing head as described above.
The invention will be better understood in the light of the following description which is given only as an indication and which is not intended to limit it, accompanied by the accompanying drawings in which:
  • the figure 1 is a two-dimensional sectional view of a dispensing head according to the invention;
  • the figure 2 is a sectional and perspective view of a dispensing nozzle of the dispensing head of the figure 1 ;
  • the figure 3 is a perspective view of the dispensing head of the figure 1 without the dispensing nozzle;
  • the figure 4 is a two-dimensional view of the dispensing nozzle figures 1 and 2 ;
  • the figure 5 is a view similar to figure 1 of a second embodiment;
  • the figure 6 is a view similar to figure 2 of the second embodiment of the figure 5 ;
  • the figure 7 is a view similar to figure 3 of the second embodiment;
  • the figures 8a, 8b, 8c, 8d, 8e, 8f, 8g schematically illustrate variant embodiments in which the nozzle comprises steps;
  • the figures 9a, 9b, 9c , 8d , 9th, 9f, 9g schematically illustrate alternative embodiments in which a core comprises steps;
  • the figures 10a, 10b, 10c, 10d, 10e, 10f, 10g schematically illustrate alternative embodiments in which the nozzle and the core comprise steps.

Sur la figure 1 est représentée une tête 1 de distribution notamment pour un système de distribution (non représenté) d'un produit fluide.On the figure 1 is shown a dispensing head 1 in particular for a dispensing system (not shown) of a fluid product.

Le système de distribution comprend la tête 1 de distribution et un dispositif de prélèvement (non représenté) muni d'un tube d'amenée inséré dans un puits 2 situé dans la tête 1 de distribution.The distribution system comprises the distribution head 1 and a sampling device (not shown) provided with a supply tube inserted into a well 2 located in the distribution head 1.

Dans la suite de la description, on adoptera par convention le repère orthogonal direct défini comme suit :

  • un axe X définissant une première direction, qui correspond à l'axe d'une chambre tourbillonnaire de la tête 1 de distribution,
  • un axe Y orthogonal à l'axe X et définissant une deuxième direction ainsi qu'un plan XY,
  • un axe Z à la fois orthogonal à l'axe Y et à l'axe X et définissant une troisième direction ainsi que des plans ZY et ZX.
In the remainder of the description, the direct orthogonal coordinate system defined as follows will be adopted by convention:
  • an X axis defining a first direction, which corresponds to the axis of a vortex chamber of the dispensing head 1,
  • a Y axis orthogonal to the X axis and defining a second direction as well as an XY plane,
  • a Z axis both orthogonal to the Y axis and to the X axis and defining a third direction as well as ZY and ZX planes.

La tête 1 de distribution comprend un corps 3. Le corps 3 définit une paroi 4 d'appui située sur une partie supérieure de celui-ci. La paroi 4 d'appui permet à l'utilisateur de presser la tête 1 de distribution pour pulvériser du produit.The dispensing head 1 comprises a body 3. The body 3 defines a bearing wall 4 located on an upper part thereof. The support wall 4 allows the user to press the dispensing head 1 in order to spray the product.

Ainsi qu'illustré sur la figure 3, le corps 3 définit un logement 6. Le logement 6 est en communication fluidique avec le puits 2. Cette communication fluidique est réalisée par le biais d'un canal 27 interne pratiqué dans le corps 3.As illustrated on figure 3 , the body 3 defines a housing 6. The housing 6 is in fluid communication with the well 2. This fluid communication is carried out by means of an internal channel 27 formed in the body 3.

Le corps 3 comprend une enclume 8. De préférence, l'enclume 8 est fabriquée d'un seul tenant avec la tête 1 de distribution. L'enclume 8 s'étend longitudinalement selon l'axe X dans le logement. L'enclume 8 présente une section circulaire dans le plan ZY.The body 3 comprises an anvil 8. Preferably, the anvil 8 is made in one piece with the dispensing head 1. The anvil 8 extends longitudinally along the X axis in the housing. The anvil 8 has a circular section in the ZY plane.

L'enclume 8 comporte un noyau 9 visible sur les figures 1 et 3. Le noyau 9 se présente sous la forme d'un élément faisant saillie selon l'axe X d'une surface 10 distale de l'enclume 8.The anvil 8 has a core 9 visible on the figures 1 and 3 . The core 9 is in the form of an element projecting along the X axis from a distal surface 10 of the anvil 8.

Le noyau 9 comprend une portion 11 cylindrique. La portion 11 cylindrique est située à la base du noyau et est adjacente à la surface 10 distale de l'enclume 8.tourbillonnaire. Le noyau 9 comprend une portion 12 conique de révolution autour de l'axe X. La portion 12 conique s'étend depuis la portion 11 cylindrique et se termine par un sommet 13. Le sommet 13 est plat. Le sommet 13 se présente sous la forme d'une paroi plane sensiblement perpendiculaire à l'axe X.The core 9 comprises a cylindrical portion 11. The cylindrical portion 11 is located at the base of the core and is adjacent to the distal surface 10 of the swirl anvil. The core 9 comprises a conical portion 12 of revolution about the axis X. The conical portion 12 extends from the cylindrical portion 11 and ends with a top 13. The top 13 is flat. The top 13 is in the form of a flat wall substantially perpendicular to the X axis.

La portion 11 cylindrique et la portion 12 conique forment ensemble une paroi 36 périphérique du noyau 9.The cylindrical portion 11 and the conical portion 12 together form a peripheral wall 36 of the core 9.

La tête 1 de distribution comprend une buse 14 de pulvérisation. La buse 14 de pulvérisation est un élément rapporté sur la tête 1 de distribution. La buse 14 de pulvérisation comporte une paroi 15 annulaire formant un volume ouvert d'un côté et fermé de l'autre par une paroi 16 distale. La buse 14 de pulvérisation définit une ouverture 17 centrale bordée latéralement selon les axes Y et Z par la paroi 15 annulaire et longitudinalement selon l'axe X par la paroi 16 distale. La paroi 15 annulaire comprend une patte 18 de verrouillage. La patte 18 de verrouillage se présente sous la forme d'une bordure annulaire en saillie, qui s'étend le long du périmètre de la paroi 15 annulaire.The dispensing head 1 comprises a spray nozzle 14. The spray nozzle 14 is an element attached to the dispensing head 1. The spray nozzle 14 has an annular wall 15 forming a volume open on one side and closed on the other by a distal wall 16. The spray nozzle 14 defines a central opening 17 bordered laterally along the Y and Z axes by the annular wall 15 and longitudinally along the X axis by the distal wall 16. The annular wall 15 comprises a locking tab 18. The locking tab 18 is in the form of a projecting annular rim, which extends along the perimeter of the annular wall.

La paroi 16 distale comporte un orifice 19 de distribution et une chambre 20 tourbillonnaire. La chambre 20 tourbillonnaire débouche dans l'orifice 19 de distribution. La chambre 20 tourbillonnaire est de révolution autour de l'axe X. De manière plus précise, la chambre 20 tourbillonnaire comprend une partie convergente 37. Ladite chambre tourbillonnaire 20 comprend une paroi 35 intérieure et s'étend depuis une extrémité 21 amont coïncidant avec une surface 23 intérieure de la paroi 16 distale jusqu'à une extrémité 22 aval. L'extrémité 22 aval peut être localisée aisément en se positionnant dans l'orifice 19 de distribution puis en se déplaçant selon l'axe X à partir d'une surface 24 extérieure de la paroi 16 distale. L'orifice 19 de distribution est un cylindre de révolution, ainsi la section de celui-ci est sensiblement constante. L'endroit où la section commence à varier est la frontière entre l'orifice 19 de distribution et la chambre 20 tourbillonnaire à savoir l'extrémité 22 aval.The distal wall 16 has a distribution orifice 19 and a vortex chamber 20. The swirl chamber 20 opens into the dispensing orifice 19. The swirl chamber 20 is of revolution about the X axis. More precisely, the swirl chamber 20 comprises a converging part 37. Said said Vortex chamber 20 comprises an interior wall 35 and extends from an upstream end 21 coinciding with an interior surface 23 of the distal wall 16 to a downstream end 22. The downstream end 22 can be located easily by positioning itself in the dispensing orifice 19 and then by moving along the X axis from an outer surface 24 of the distal wall 16. The dispensing orifice 19 is a cylinder of revolution, so the section thereof is substantially constant. The place where the section begins to vary is the border between the distribution orifice 19 and the vortex chamber 20, namely the downstream end 22.

Dans une variante de réalisation non représentée, l'extrémité 22 aval de la chambre 20 tourbillonnaire est l'orifice 19 de distribution. En d'autres termes, l'orifice 19 de distribution coïncide avec l'extrémité 22 aval.In an alternative embodiment not shown, the downstream end 22 of the swirl chamber 20 is the distribution orifice 19. In other words, the dispensing orifice 19 coincides with the downstream end 22.

Dans une variante de réalisation non représentée sur les figures, seule une partie de la chambre 20 tourbillonnaire est de révolution.In an alternative embodiment not shown in the figures, only part of the vortex chamber 20 is of revolution.

Dans le mode de réalisation illustré, la chambre tourbillonnaire 20 comprend en outre une préchambre 50, située en amont de la partie convergente 37 de ladite chambre tourbillonnaire. Ladite préchambre 50 est ici annulaire. Elle est délimitée par la portion 11 cylindrique du noyau 9, la partie en regard de la paroi distale 16 de la buse, la surface distale 10 de l'enclume et la partie convergente 37 de la chambre tourbillonnaire. Ainsi, l'extrémité amont de la chambre 20 correspond à l'extrémité amont de la préchambre 50.In the illustrated embodiment, the swirl chamber 20 further comprises a prechamber 50, located upstream of the converging part 37 of said swirl chamber. Said prechamber 50 is here annular. It is delimited by the cylindrical portion 11 of the core 9, the part facing the distal wall 16 of the nozzle, the distal surface 10 of the anvil and the converging part 37 of the vortex chamber. Thus, the upstream end of the chamber 20 corresponds to the upstream end of the prechamber 50.

La buse 14 de distribution comporte au moins un canal 25 d'alimentation de la chambre 20 tourbillonnaire. Dans le mode préféré de réalisation illustré sur les figures, la buse 14 de distribution comprend deux canaux 25 d'alimentation. Les canaux 25 d'alimentation sont pratiqués dans la paroi 16 distale.The distribution nozzle 14 comprises at least one channel 25 for supplying the vortex chamber 20. In the preferred embodiment illustrated in the figures, the dispensing nozzle 14 comprises two supply channels 25. The feed channels 25 are made in the distal wall 16.

Les canaux 25 d'alimentation débouchent tangentiellement dans la préchambre 50 annulaire appartenant à la chambre 20 tourbillonnaire. Ils pourraient déboucher selon toute autre orientation. En particulier, les canaux 25 pourraient déboucher selon une direction tangentielle à la première marche 30, immédiatement en aval de la préchambre 50. La préchambre 50 permet la mise en rotation du produit autour de la portion 11 cylindrique du noyau 9. La préchambre 50 annulaire présente une longueur mesurée selon l'axe X égale à une profondeur des canaux 25 d'alimentation mesurée selon l'axe X. La préchambre 50 annulaire n'est pas une marche au sens donné dans l'invention.The supply channels 25 open out tangentially into the annular prechamber 50 belonging to the vortex chamber 20. They could lead in any other direction. In particular, the channels 25 could open out in a direction tangential to the first step 30, immediately downstream of the prechamber 50. The prechamber 50 allows the product to be rotated. around the cylindrical portion 11 of the core 9. The annular prechamber 50 has a length measured along the X axis equal to a depth of the supply channels 25 measured along the X axis. The annular prechamber 50 is not a step within the meaning given in the invention.

Ainsi que précédemment évoqué la buse 14 de pulvérisation est un élément distinct rapporté sur la tête 1 de distribution. De façon plus précise, la buse 14 de pulvérisation est insérée dans le logement 6 et fixée au corps 3 grâce à la patte 18 de verrouillage encastrée dans ledit corps 3.As previously mentioned, the spray nozzle 14 is a separate element attached to the dispensing head 1. More precisely, the spray nozzle 14 is inserted into the housing 6 and fixed to the body 3 thanks to the locking tab 18 embedded in said body 3.

Ainsi qu'illustré sur la figure 1, l'enclume 8 est agencée en partie dans l'ouverture 17 centrale de la buse de sorte que la surface 10 distale soit en butée sur la surface 23 intérieure. Le noyau 9 loge alors à l'intérieur de la chambre 20 tourbillonnaire. La paroi 36 périphérique du noyau 9 et la partie 37 convergente de la chambre 20 tourbillonnaire forment un chemin fluidique dans lequel circule le produit provenant du canal 25 d'alimentation.As illustrated on figure 1 , the anvil 8 is arranged in part in the central opening 17 of the nozzle so that the distal surface 10 abuts the inner surface 23. The core 9 then lodges inside the vortex chamber 20. The peripheral wall 36 of the core 9 and the converging part 37 of the swirl chamber 20 form a fluid path in which the product from the supply channel 25 circulates.

Ainsi qu'on peut le voir sur les figures 1 et 2, la partie 37 convergente de la chambre 20 tourbillonnaire comporte une pluralité de marches 30. Une marche 30 est définie par une paroi 31 transversale et une paroi 32 longitudinale.As can be seen on the figures 1 and 2 , the converging portion 37 of the swirl chamber 20 comprises a plurality of steps 30. A step 30 is defined by a transverse wall 31 and a longitudinal wall 32.

La paroi 31 transversale s'étend dans un plan sécant à l'axe X. En effet en prolongeant la paroi 31 transversale en direction de l'axe X à l'aide d'une droite imaginaire sur la figure 1, cette dernière coupe l'axe X. La paroi 32 longitudinale est sensiblement parallèle à l'axe X. En prolongeant la paroi 32 longitudinale de part et d'autre à l'infini avec une droite imaginaire, celle-ci est sensiblement parallèle à l'axe X.The transverse wall 31 extends in a plane secant to the X axis. In fact, by extending the transverse wall 31 in the direction of the X axis using an imaginary straight line on the line. figure 1 , the latter intersects the X axis. The longitudinal wall 32 is substantially parallel to the X axis. By extending the longitudinal wall 32 on either side to infinity with an imaginary straight line, the latter is substantially parallel to the X axis.

Dans cette configuration, les marches 30 forment des obstacles dans le chemin fluidique. De manière plus précise, les parois 31 transversales des marches 30 forment des obstacles dans le chemin fluidique.In this configuration, the steps 30 form obstacles in the fluid path. More precisely, the transverse walls 31 of the steps 30 form obstacles in the fluid path.

La combinaison des marches 30 et d'un noyau 9 qui s'étend dans la chambre 20 tourbillonnaire permet d'éliminer le jet continu qui apparaît dans une zone 28 centrale d'un cône 29 de gouttelettes pulvérisé à la sortie de l'orifice 19 de distribution. En d'autres termes, la combinaison du noyau 9 et des marches 30 formant des obstacles dans le chemin fluidique permet avantageusement d'obtenir dans la zone 28 centrale des gouttelettes ayant des dimensions identiques sinon similaires, aux gouttelettes présentes dans le reste du cône 29 pulvérisé. Ainsi les dimensions des gouttelettes dans le cône 29 sont sensiblement uniformes.The combination of the steps 30 and of a core 9 which extends in the vortex chamber 20 makes it possible to eliminate the continuous jet which appears in a central zone 28 of a cone 29 of droplets sprayed at the outlet of the orifice 19. of distribution. In other words, the combination of the core 9 and the steps 30 forming obstacles in the fluid path advantageously makes it possible to obtain, in the central zone 28, droplets having dimensions which are identical, if not similar, to the droplets present in the rest of the cone 29. sprayed. Thus the dimensions of the droplets in the cone 29 are substantially uniform.

Dans un mode de réalisation préféré de l'invention, les parois 31 transversales sont sensiblement orthogonales à l'axe X. Le choc avec le produit dans le chemin fluidique est alors brutal au profit d'une meilleure impaction du produit sur les marches 30.In a preferred embodiment of the invention, the transverse walls 31 are substantially orthogonal to the X axis. The impact with the product in the fluid path is then sudden in favor of better impaction of the product on the steps 30.

Dans une variante de réalisation non représentée, les parois 31 transversales ne sont pas orthogonales. Dans ce dernier cas l'énergie du choc entre le produit et les parois 31 transversales est moins élevée. L'énergie du choc du produit contre les marches 30 peut être ajustée en modifiant l'angle que forment les parois 31 transversales avec l'axe X.In an alternative embodiment not shown, the transverse walls 31 are not orthogonal. In the latter case, the energy of the impact between the product and the transverse walls 31 is lower. The energy of the impact of the product against the steps 30 can be adjusted by modifying the angle formed by the transverse walls 31 with the X axis.

Chaque paroi 31 transversale croise à chacune de ses extrémités une paroi 32 longitudinale. Dans ce qui suit, ces croisements sont dénommés nez 33 de marche et creux 34 de marche en fonction de leur éloignement dans le plan ZY de la paroi 36 périphérique du noyau 9.Each transverse wall 31 crosses at each of its ends a longitudinal wall 32. In what follows, these crossings are called tread nosing 33 and tread troughs 34 depending on their distance in the plane ZY from the peripheral wall 36 of the core 9.

Dans un mode préféré de réalisation, le nez 33 de marche se situe à une distance proximale comprise entre 70 et 250 micromètres de la paroi 36 périphérique du noyau 9. Sur la figure 1, cette distance proximale est mesurée selon une droite imaginaire tracée depuis le nez 33 de marche jusqu'à la paroi 36 périphérique selon l'itinéraire le plus court. De préférence la distance proximale est d'environ 160 micromètres.In a preferred embodiment, the nosing 33 is located at a proximal distance of between 70 and 250 micrometers from the peripheral wall 36 of the core 9. On the figure 1 , this proximal distance is measured along an imaginary line drawn from the nose 33 of the step to the peripheral wall 36 according to the shortest route. Preferably the proximal distance is about 160 micrometers.

La distance proximale comprise dans l'intervalle évoqué ci-dessus et plus particulièrement la valeur spécifique indiquée, permettent un cisaillement du produit suffisant au voisinage des nez 33 de marche contre la paroi 36 périphérique du noyau 9. Il en résulte une augmentation localisée du taux de cisaillement induit par la paroi 36 périphérique au voisinage des nez 33 de marche permettant de diminuer la viscosité du produit. En d'autres termes, ceci permet de fluidifier le produit.The proximal distance included in the interval mentioned above and more particularly the specific value indicated, allow sufficient shearing of the product in the vicinity of the noses 33 against the peripheral wall 36 of the nucleus 9. This results in a localized increase in the rate. of shear induced by the wall 36 peripheral in the vicinity of the nosing 33 step allowing the viscosity of the product to be reduced. In other words, this makes it possible to thin the product.

Il a été déterminé qu'une longueur comprise entre 30 et 350 micromètres pour la paroi 31 transversale mesurée selon l'axe Y sur la figure 1 et dans le plan ZY en perspective, est particulièrement efficace. Il a également été déterminé qu'une longueur comprise entre 30 et 250 micromètres pour la paroi 32 longitudinale selon l'axe X sur la figure 1 et dans le plan ZX en perspective est particulièrement efficace.It has been determined that a length of between 30 and 350 micrometers for the transverse wall 31 measured along the Y axis on the figure 1 and in the perspective ZY plane, is particularly effective. It has also been determined that a length of between 30 and 250 micrometers for the longitudinal wall 32 along the X axis on the figure 1 and in the perspective ZX plane is particularly effective.

Dans un mode préféré de réalisation représenté sur les figures, la partie 37 convergente de la chambre 20 tourbillonnaire comporte entre trois et quinze marches 30 et de préférence quatre marches 30. Ainsi la partie 37 convergente comporte de préférence quatre parois 31 transversales et quatre parois 32 longitudinales. Ceci permet d'obtenir des résultats significatifs avec une élimination totale sinon quasi-totale d'un jet continu dans la zone 28 centrale.In a preferred embodiment shown in the figures, the converging part 37 of the vortex chamber 20 comprises between three and fifteen steps 30 and preferably four steps 30. Thus the converging part 37 preferably comprises four transverse walls 31 and four walls 32. longitudinal. This makes it possible to obtain significant results with a total if not almost total elimination of a continuous jet in the central zone 28.

Avantageusement, le noyau 9 est agencé à l'intérieur de la chambre 20 tourbillonnaire de sorte que tout point de la paroi plane se situe à une distance prédéterminée de l'extrémité aval comprise entre 100 et 300 micromètres, et de préférence à environ 200 micromètres. Cette distance est particulièrement avantageuse car elle permet une évacuation optimale du produit en ce sens que le produit est à la fois correctement fluidifié d'une part et limite la perte de charge lorsque circule dans le chemin fluidique.Advantageously, the core 9 is arranged inside the swirl chamber 20 so that any point of the planar wall is located at a predetermined distance from the downstream end of between 100 and 300 micrometers, and preferably at approximately 200 micrometers. . This distance is particularly advantageous because it allows optimum evacuation of the product in the sense that the product is both correctly fluidized on the one hand and limits the pressure drop when circulating in the fluid path.

Le noyau 9 et plus précisément la paroi plane est agencée en regard de l'orifice 19 de distribution de sorte que ledit noyau définit un obstacle à toute intrusion depuis le milieu extérieur par l'orifice 19 de distribution de sorte à ne pas boucher les conduits.The core 9 and more precisely the flat wall is arranged opposite the distribution orifice 19 so that said core defines an obstacle to any intrusion from the outside environment through the distribution orifice 19 so as not to block the ducts. .

Avantageusement le noyau 9 de l'enclume 8 est plein. En d'autres termes le noyau 9 ne comprend aucun orifice quelconque débouchant par exemple sur le milieu extérieur d'une part et sur la chambre 20 tourbillonnaire d'autre part ou sur une quelconque partie du logement 6.Advantageously, the core 9 of the anvil 8 is solid. In other words, the core 9 does not include any orifice whatsoever opening, for example, to the external environment on the one hand and to the swirl chamber 20 on the other hand or to any part of the housing 6.

Avantageusement l'orifice 19 de distribution est uniquement relié de manière fluidique à la partie 37 convergente. En d'autres termes la buse 14 de distribution ne comprend aucun canal ou sortie reliant la chambre 20 tourbillonnaire ou le logement 6 au milieu extérieur par exemple lorsqu'elle est montée sur le corps 3.Advantageously, the distribution orifice 19 is only fluidly connected to the converging part 37. In other words, the dispensing nozzle 14 does not include any channel or outlet connecting the swirl chamber 20 or the housing 6 to the external environment, for example when it is mounted on the body 3.

Ceci permet avantageusement de maintenir les conditions propices de pression dans la chambre 20 tourbillonnaire et plus globalement dans le logement 6 d'une part et d'éviter tout contamination bactérienne avec le milieu extérieur d'autre part.This advantageously makes it possible to maintain the favorable pressure conditions in the vortex chamber 20 and more generally in the housing 6 on the one hand and to avoid any bacterial contamination with the external environment on the other hand.

Dans une variante de réalisation représentée sur les figures 5 à 7, la chambre 20 tourbillonnaire est plus longue selon l'axe X que celle du mode de réalisation représenté sur les figures 1 à 4.In an alternative embodiment shown in the figures 5 to 7 , the vortex chamber 20 is longer along the X axis than that of the embodiment shown in the figures 1 to 4 .

Les figures 8a à 8g illustrent des modes de réalisation dans lesquels les marches sont agencées sur la buse.The figures 8a to 8g illustrate embodiments in which the steps are arranged on the nozzle.

Les figures 9a à 9g illustrent des modes de réalisation dans lesquels les marches sont agencées sur le noyau.The figures 9a to 9g illustrate embodiments in which the steps are arranged on the core.

Les figures 10a à 10g illustrent des modes de réalisation dans lesquels les marches sont agencées sur la buse et sur le noyau.The figures 10a to 10g illustrate embodiments in which the steps are arranged on the nozzle and on the core.

Les figures 8a, 9a et 10a illustrent des variantes dans lesquelles parois longitudinales et transversales sont approximativement de même dimension.The figures 8a , 9a and 10a illustrate variants in which the longitudinal and transverse walls are approximately of the same size.

Les figures 8b, 9b et 10b illustrent des variantes dans lesquelles parois longitudinales et transversales sont de dimensions différentes.The figures 8b , 9b and 10b illustrate variants in which the longitudinal and transverse walls are of different dimensions.

Les figures 8c, 9c et 10c illustrent des variantes dans lesquelles la paroi longitudinale située la plus en aval selon le déplacement du fluide est plus longue que les autres parois longitudinales situées plus en amont.The figures 8c , 9c and 10c illustrate variants in which the longitudinal wall located further downstream according to the movement of the fluid is longer than the other longitudinal walls located further upstream.

Les figures 8d, 9d et 10d illustrent des variantes dans lesquelles une paroi longitudinale quelconque est plus longue que les autres parois longitudinales.The figures 8d , 9d and 10d illustrate variants in which any longitudinal wall is longer than the other longitudinal walls.

Les figures 8e, 9e et 10e illustrent des variantes dans lesquelles le chemin fluidique est divergent.The figures 8th , 9th and 10th illustrate variants in which the fluid path is divergent.

Les figures 8f, 9f et 10f illustrent des variantes dans lesquelles le chemin fluidique est convergent. Cette variante est particulièrement intéressante car elle permet un taux de cisaillement croissant dans le sens amont - aval selon le déplacement du produit.The figures 8f , 9f and 10f illustrate variants in which the fluid path converges. This variant is particularly advantageous because it allows an increasing shear rate in the upstream - downstream direction depending on the movement of the product.

Les figures 8g, 9g et 10g illustrent des variantes dans lesquelles une section intermédiaire 51 plane sépare deux groupes de marches 53.The figures 8g , 9g and 10g illustrate variants in which a planar intermediate section 51 separates two groups of steps 53.

Dans une variante de réalisation non représentée sur les figures, les marches peuvent être agencées par secteur angulaire. En d'autres termes, les marches s'étendent de manière interrompue sur le périmètre de la partie 37 convergente de la chambre 20 tourbillonnaire et/ou de la paroi 36 périphérique du noyau 9. Dans cette variante, le noyau 9 et/ou la chambre 20 tourbillonnaire comprennent au moins deux groupes de marches séparés par des parois lisses.In an alternative embodiment not shown in the figures, the steps can be arranged by angular sector. In other words, the steps extend in an interrupted manner on the perimeter of the converging part 37 of the vortex chamber 20 and / or of the peripheral wall 36 of the core 9. In this variant, the core 9 and / or the swirl chamber 20 include at least two groups of steps separated by smooth walls.

L'invention vise également un système de pulvérisation d'un produit comprenant une tête 1 de distribution tel que précédemment décrit.The invention also relates to a system for spraying a product comprising a dispensing head 1 as described above.

Claims (13)

  1. Dispensing head (1), in particular for a dispensing system of a product, comprising:
    - a spray nozzle (14) comprising a dispensing orifice (19) and a whirl chamber (20) leading to the dispensing orifice (19), the whirl chamber (20) comprising a converging portion (37), said whirl chamber extending along an axis (X) between an upstream end (21) and a downstream end (22) in the displacement direction of the product, and
    - an anvil (8) comprising a core (9) provided with a peripheral wall (36), the core (9) housing inside the whirl chamber (20), the peripheral wall (36) and the converging portion (37) forming at least one fluid path wherein the product circulates,
    the converging portion (37) comprising an inner wall (35) of the nozzle (14), said inner wall (35) and/or the peripheral wall (36) of the core being provided with a plurality of steps (30), each step (30) being defined by a transverse wall (31) which extends into a plane secant to the axis (X) and a longitudinal wall (32) substantially parallel to the axis, the steps (30) forming obstacles in the fluid path, the nozzle (14) comprising at least one feeding channel (25) of the whirl chamber (20) tangentially leading to the whirl chamber (20),
    said head being characterised in that the core (9) comprises a conical portion of revolution (12) about the axis (X) and defining a peak (13) located facing the dispensing orifice (19).
  2. Dispensing head (1) according to claim 1, wherein the converging portion (37) comprises at least one step nosing (33) located at the junction between a transverse wall (31) and a longitudinal wall (32), the step nosing (33) being located at a proximal distance comprised between 70 and 250 micrometres from the peripheral wall (36) of the core (9) measured along an imaginary straight line traced from the step nosing (33) to the peripheral wall (36) according to the shortest itinerary.
  3. Dispensing head (1) according to claim 2, wherein a length of the longitudinal wall (32) is comprised between 30 and 250 micrometres measured along the axis (X).
  4. Dispensing head (1) according to claim 2 or 3, wherein a length of the transverse wall (31) is comprised between 30 and 350 micrometres measured along an axis orthogonal to the axis (X).
  5. Dispensing head (1) according to one of the preceding claims, wherein the steps (30) extend from the upstream end (21) to the downstream end (22).
  6. Dispensing head (1) according to one of the preceding claims, wherein the converging portion (37) comprises between three and fifteen steps (30), preferably four steps (30).
  7. Dispensing head (1) according to the preceding claim, characterised in that the whirl chamber (20) comprises a prechamber upstream of said converging portion (37), the channel(s) (25) leading to the prechamber (50).
  8. Dispensing head (1) according to the preceding claim, characterised in that the prechamber (50) is annular.
  9. Dispensing head (1) according to one of claims 7 and 8, characterised in that the height of the channel(s) (25) corresponds to the height of the prechamber (50).
  10. Dispensing head (1) according to one of the preceding claims, wherein the peak (13) is flat and comprises a flat wall substantially perpendicular to the axis (X).
  11. Dispensing head (1) according to one of the preceding claims, wherein the core (9) is massive.
  12. Dispending head (1) according to one of the preceding claims, wherein the dispensing orifice (19) is only connected fluidically to the converging portion (37) of the nozzle.
  13. System for dispensing a product, characterised in that it comprises a dispensing head (1) according to one of the preceding claims.
EP19157320.3A 2018-02-27 2019-02-14 Dispensing head with stepped whirl chamber for a dispensing system Active EP3530355B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1851712A FR3078271B1 (en) 2018-02-27 2018-02-27 DISTRIBUTION HEAD WITH STAGED WHIRLPOOL CHAMBER FOR A DISTRIBUTION SYSTEM

Publications (2)

Publication Number Publication Date
EP3530355A1 EP3530355A1 (en) 2019-08-28
EP3530355B1 true EP3530355B1 (en) 2021-07-21

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Application Number Title Priority Date Filing Date
EP19157320.3A Active EP3530355B1 (en) 2018-02-27 2019-02-14 Dispensing head with stepped whirl chamber for a dispensing system

Country Status (4)

Country Link
US (1) US11033913B2 (en)
EP (1) EP3530355B1 (en)
CN (1) CN110193432B (en)
FR (1) FR3078271B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11794984B2 (en) * 2019-10-15 2023-10-24 Aptargroup, Inc. Actuator for dispensing a fluent product

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Publication number Priority date Publication date Assignee Title
US3129893A (en) * 1962-05-31 1964-04-21 Edward Howard Green Spray head for swirling spray
US3881658A (en) * 1971-06-03 1975-05-06 Seaquist Valve Co Mechanical breakup button or actuator
US3994442A (en) * 1975-04-07 1976-11-30 Seaquist Valve Company, Div. Of Pittway Corporation Solid pattern mbu button
US5855322A (en) * 1997-09-10 1999-01-05 Py; Daniel System and method for one-way spray aerosol tip
CN101218036B (en) * 2005-07-06 2011-05-04 三谷阀门有限公司 Content discharge mechanism, and aerosol-type product and pump-type product with the same
ITMI20061195A1 (en) * 2006-06-21 2007-12-22 Siviero Enrico METHOD AND EQUIPMENT WITH LOBATE NOZZLES FOR THE MIXING OF REACTIVE CHEMICAL COMPONENTS
FR2904573B1 (en) * 2006-08-04 2008-12-05 Rexam Dispensing Systems Sas SPRAY NOZZLE, DISPENSING DEVICE COMPRISING SUCH A NOZZLE, DISPENSER COMPRISING SUCH A DISPENSING ORGAN AND USE OF SUCH A NOZZLE.
FR2949762B1 (en) * 2009-09-10 2011-12-09 Rexam Dispensing Sys PUSH BUTTON FOR A SYSTEM FOR DISTRIBUTING A PRODUCT UNDER PRESSURE.
ES2536848T3 (en) 2010-11-12 2015-05-29 Dental Care Innovation Gmbh Dental cleaning system
DE102010051227A1 (en) * 2010-11-12 2012-05-16 Dental Care Innovation Gmbh Nozzle for the emission of liquid cleaning agents with abrasive particles dispersed therein
US9604773B2 (en) * 2015-01-20 2017-03-28 Summit Packaging Systems, Inc. Insert with nozzle formed by micro stepped and conical surfaces
FR3050125B1 (en) 2016-04-14 2021-12-17 Albea Le Treport SPRAY NOZZLE, ESPECIALLY FOR A PRESSURE PRODUCT DISTRIBUTION SYSTEM EQUIPPED WITH A PUSH BUTTON, AND DISTRIBUTION SYSTEM INCLUDING SUCH A NOZZLE

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Title
None *

Also Published As

Publication number Publication date
US20190262847A1 (en) 2019-08-29
CN110193432A (en) 2019-09-03
FR3078271A1 (en) 2019-08-30
US11033913B2 (en) 2021-06-15
EP3530355A1 (en) 2019-08-28
FR3078271B1 (en) 2022-08-05
CN110193432B (en) 2022-06-07

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