EP1914177B1 - Device for dispensing a liquid product - Google Patents

Device for dispensing a liquid product Download PDF

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Publication number
EP1914177B1
EP1914177B1 EP07117643A EP07117643A EP1914177B1 EP 1914177 B1 EP1914177 B1 EP 1914177B1 EP 07117643 A EP07117643 A EP 07117643A EP 07117643 A EP07117643 A EP 07117643A EP 1914177 B1 EP1914177 B1 EP 1914177B1
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EP
European Patent Office
Prior art keywords
thickness
nozzle
dispensing
diameter
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP07117643A
Other languages
German (de)
French (fr)
Other versions
EP1914177A1 (en
Inventor
Jean-Pierre Songbe
Bernard Clerget
Hervé IMENEZ
Pierre Dumont
Hervé Lompech
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Le Treport SAS
Original Assignee
Rexam Dispensing Systems SAS
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Publication date
Application filed by Rexam Dispensing Systems SAS filed Critical Rexam Dispensing Systems SAS
Publication of EP1914177A1 publication Critical patent/EP1914177A1/en
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Publication of EP1914177B1 publication Critical patent/EP1914177B1/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • 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
    • B05B1/3436—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 plane perpendicular to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • 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

Definitions

  • the present invention relates to dispensing devices for fluid products according to the preamble of claim 1.
  • WO-A-03/018208 also describes an example of such a dispensing device in which a recess is formed in the stud and open a view of the outlet orifice.
  • the fitting wall tends to undergo shrinkage phenomena in particular facing the nozzle receiving stud, which hampers the proper fitting of this fitting wall on an actuating rod.
  • hollow pump or fluid dispensing valve In dispensing devices of this type, the fitting wall tends to undergo shrinkage phenomena in particular facing the nozzle receiving stud, which hampers the proper fitting of this fitting wall on an actuating rod.
  • the present invention is intended to overcome this disadvantage.
  • a dispensing device of the kind in question is characterized in that said fitting wall has a second thickness facing said recess, the second thickness being less than 1.1 times the first thickness.
  • the material thickness of the pusher is reduced at the level of the stud, which makes it possible to strongly limit the aforementioned withdrawal phenomena. This results in better control of the internal dimensions of the fitting wall, so a better holding of the pusher on the pump actuating rod or valve on which it is intended to be fitted.
  • the presence of the aforementioned recess improves the quality of the spray, especially when the fluid to be dispensed arrives in the vortex chamber at a relatively low pressure (for example a pressure of less than 4 bar).
  • a relatively low pressure for example a pressure of less than 4 bar.
  • there is a homogeneous distribution of the droplets of sprayed fluid while with the devices of the prior art, there is an inhomogeneous distribution of droplets of sprayed fluid (generally, in the case of low fluid pressure, the droplets tend to form a hollow cone, so with a low density of droplets in the vicinity of the axis of the outlet).
  • the figure 1 represents a distribution device 1 for a fluid product, intended to dispense for example a cosmetic product or the like, in particular having a liquid or semi-liquid consistency.
  • the dispensing device 1 shown on the figure 1 comprises a reservoir 2 containing fluid product, under pressure or not, and a dispensing mechanism 3 such as a manual spray pump (or optionally a valve if the fluid is under pressure in the tank 2).
  • a dispensing mechanism 3 such as a manual spray pump (or optionally a valve if the fluid is under pressure in the tank 2).
  • This dispensing mechanism 3 comprising a hollow actuating rod 4 which extends along a central axis Z and which is slidably mounted in the body 5 of the dispensing mechanism.
  • the actuating rod 4 is adapted to allow a fluid product outlet when said actuating rod 4 is pressed into the body 5.
  • the outlet of the fluid product in question can optionally be carried out at relatively low pressure, for example at a pressure below 4 bar.
  • a pusher 6 is fitted on the actuating rod 4.
  • This pusher 6 may for example be molded in one piece of thermoplastic synthetic material, in particular polyolefin (for example, polypropylene or the like).
  • This outlet nozzle 14 In the nozzle receiving housing 12 is force-fitted an outlet nozzle 14 clearly visible on the figures 1 and 2 .
  • This outlet nozzle which may be made for example of molded plastic, has a front wall 15 perpendicular to the X axis and a substantially cylindrical side wall 16 whose outer surface is tightly fitted into the nozzle receiving housing 12.
  • the front wall 15 of the outlet nozzle is pierced with an outlet orifice 17 which may be for example centered on the axis X.
  • This outlet orifice 17 communicates with an intermediate chamber 18 hollowed out in the inner face of the front wall 15 which intermediate chamber communicates with one or more fluid inlet channels 19 themselves dug in the inner face of the front wall.
  • the intermediate chamber 18 has a substantially cylindrical shape centered on the X axis and the channels 19, which here are 3 in number, are arranged substantially tangentially with respect to the intermediate chamber 18, so as to cause a swirl of the fluid arriving through the channels 19 in the intermediate chamber 18.
  • the above described arrangement of the intermediate chamber 18 and the channels 19 is given for illustrative purposes only and could be modified without depart from the scope of the present invention.
  • the channels 19 communicate with an annular space 20 arranged between the inner surface of the side wall 16 of the nozzle and the outer surface of the pad 13 of the pusher, and this annular space 20 communicates itself, via a conduit 21 formed in the pusher, with the upper end of the well 10 in which is engaged the actuating rod 4 of the dispensing mechanism 3.
  • a recess 22 is formed in the stud 13.
  • This recess 22 may for example have a substantially cylindrical shape of revolution about the X axis, or possibly a slightly divergent shape towards the outside.
  • the recess 22 extends along the X axis between a bottom formed by a portion of the fitting wall 9 and an open end opening into the intermediate chamber 18, facing the outlet orifice 17.
  • the fitting wall 9 has, in a plane perpendicular to the axis Z and containing the axis X, a first thickness e1, outside the nozzle receiving housing 12, and a second thickness e2 at the level of the recess 22.
  • the second thickness e2 is less than 1.1 times the first thickness e1.
  • the second thickness e2 may be less than or equal to the first thickness e1.
  • the second thickness e2 is smaller than the first thickness e1, and said thickness e2 is, for example, between 0.3 and 0.7 times the first thickness e1.
  • the recess 22 of the stud delimits an annular wall 23 of said stud which has a third thickness e3 (measured radially with respect to the axis X) generally less than 0.7 times the first thickness e1 and for example between 0 , 2 and 0.6 times the first thickness e1.
  • the side wall 11 represents a fourth thickness e4 which may be less than 0.8 times the first thickness e1, and for example between 0.3 and 0.7 times the first thickness e1.
  • the presence of the recess 22 in the stud makes it possible to avoid irregularities in the internal shape of the branch wall 9, and thus to ensure a good fit of the pusher 6 on the actuating rod 4.
  • the aforementioned outlet orifice 17 has a first diameter d1 which is generally of the order of a few tenths of a millimeter, for example of approximately 0.3 millimeter, while the maximum diameter d2 of the recess 22 may be greater than 2 times the diameter d1, for example between 2 and 3 times the diameter d1. In the example considered here, the maximum diameter of the recess 22 can thus be, for example, of the order of 0.8 millimeters. Finally, the intermediate chamber 18 may have a diameter d3 greater than the diameter d2, for example of the order of 0.9 millimeters, in the particular case shown in the drawings.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)

Description

La présente invention est relative aux dispositifs de distribution pour produits fluides selon le préambule de la revendication 1.The present invention relates to dispensing devices for fluid products according to the preamble of claim 1.

Le document WO-A-2005/032972 décrit un exemple d'un tel dispositif de distribution.The document WO-2005/032972 describes an example of such a dispensing device.

Le document WO-A-03/018208 décrit également un exemple d'un tel dispositif de distribution dans lequel un évidement est ménagé dans le plot et ouvert un regard de l'orifice de sortie.The document WO-A-03/018208 also describes an example of such a dispensing device in which a recess is formed in the stud and open a view of the outlet orifice.

Dans les dispositifs de distribution de ce type, la paroi d'emmanchement a tendance à subir des phénomènes de retrait notamment en regard du plot de réception de buse, ce qui nuit au bon emmanchement de cette paroi d'emmanchement sur une tige d'actionnement creuse de pompe ou de valve de distribution de produit fluide.In dispensing devices of this type, the fitting wall tends to undergo shrinkage phenomena in particular facing the nozzle receiving stud, which hampers the proper fitting of this fitting wall on an actuating rod. hollow pump or fluid dispensing valve.

La présente invention a notamment pour but de pallier cet inconvénient.The present invention is intended to overcome this disadvantage.

A cet effet, selon l'invention, un dispositif de distribution du genre en question est caractérisé en ce que ladite paroi d'emmanchement présente une deuxième épaisseur en regard dudit évidement, la deuxième épaisseur étant inférieure à 1,1 fois la première épaisseur.For this purpose, according to the invention, a dispensing device of the kind in question is characterized in that said fitting wall has a second thickness facing said recess, the second thickness being less than 1.1 times the first thickness.

Grâce à ces dispositions, on diminue l'épaisseur de matière du poussoir au niveau du plot, ce qui permet de limiter fortement les phénomènes de retrait susmentionnés. Il en résulte une meilleure maîtrise des dimensions intérieures de la paroi d'emmanchement, donc une meilleure tenue du poussoir sur la tige d'actionnement de pompe ou de valve sur laquelle il est destiné à être emboîté.Thanks to these provisions, the material thickness of the pusher is reduced at the level of the stud, which makes it possible to strongly limit the aforementioned withdrawal phenomena. This results in better control of the internal dimensions of the fitting wall, so a better holding of the pusher on the pump actuating rod or valve on which it is intended to be fitted.

De plus, on constate que la présence de l'évidement susmentionné améliore la qualité de la pulvérisation, notamment lorsque le produit fluide à distribuer arrive dans la chambre tourbillonnaire sous une relativement faible pression (par exemple une pression inférieure à 4 bars). En effet, avec de telles pressions, on constate une répartition homogène des gouttelettes de produit fluide pulvérisé, alors qu'avec les dispositifs de l'art antérieur, on note une répartition inhomogène des gouttelettes de produit fluide pulvérisé (généralement, dans le cas d'une faible pression du fluide, les gouttelettes ont tendance à former un cône creux, donc avec une faible densité de gouttelettes au voisinage de l'axe de l'orifice de sortie).In addition, it is found that the presence of the aforementioned recess improves the quality of the spray, especially when the fluid to be dispensed arrives in the vortex chamber at a relatively low pressure (for example a pressure of less than 4 bar). Indeed, with such pressures, there is a homogeneous distribution of the droplets of sprayed fluid, while with the devices of the prior art, there is an inhomogeneous distribution of droplets of sprayed fluid (generally, in the case of low fluid pressure, the droplets tend to form a hollow cone, so with a low density of droplets in the vicinity of the axis of the outlet).

Dans divers modes de réalisation du dispositif selon l'invention, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes :

  • la deuxième épaisseur est au plus égale à la première épaisseur ;
  • le plot comporte une paroi annulaire délimitée intérieurement par ledit évidement, cette paroi annulaire présentant une troisième épaisseur inférieure à 0,7 fois ladite première épaisseur ;
  • la troisième épaisseur est comprise entre 0,2 et 0,6 fois la première épaisseur ;
  • ladite paroi latérale présente une quatrième épaisseur inférieure à 0,8 fois ladite première épaisseur ;
  • la quatrième épaisseur est comprise entre 0,3 et 0,7 fois la première épaisseur ;
  • l'orifice de sortie présente un premier diamètre et l'évidement présente un deuxième diamètre (la buse de pulvérisation, le logement de réception de buse et le plot présentant une forme de révolution autour d'un axe latéral), le deuxième diamètre étant supérieur à 2 fois le premier diamètre ;
  • le deuxième diamètre est compris entre 2 et 3 fois le premier diamètre ;
  • le dispositif de distribution comporte en outre un mécanisme de distribution doté d'une tige d'actionnement creuse emboîtée dans le puits du poussoir.
In various embodiments of the device according to the invention, one or more of the following provisions may also be used:
  • the second thickness is at most equal to the first thickness;
  • the stud comprises an annular wall delimited internally by said recess, this annular wall having a third thickness less than 0.7 times said first thickness;
  • the third thickness is between 0.2 and 0.6 times the first thickness;
  • said side wall has a fourth thickness less than 0.8 times said first thickness;
  • the fourth thickness is between 0.3 and 0.7 times the first thickness;
  • the outlet orifice has a first diameter and the recess has a second diameter (the spray nozzle, the nozzle receiving housing and the stud having a shape of revolution about a lateral axis), the second diameter being greater than at 2 times the first diameter;
  • the second diameter is between 2 and 3 times the first diameter;
  • the dispensing device further comprises a dispensing mechanism having a hollow actuating rod nested in the pusher well.

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description suivante de deux de ses modes de réalisation, donnés à titre d'exemples non limitatifs, en regard des dessins joints.Other features and advantages of the invention will become apparent from the following description of two of its embodiments, given by way of non-limiting examples, with reference to the accompanying drawings.

Sur les dessins :

  • la figure 1 est une vue en coupe verticale d'un exemple de dispositif de distribution selon un premier mode de réalisation de l'invention,
  • la figure 2 est une vue en perspective d'un exemple de buse de pulvérisation pouvant équiper le dispositif de la figure 1,
  • la figure 3 est une vue en coupe selon la ligne III-III de la figure 1,
  • et la figure 4 est une vue similaire à la figure 3, dans un deuxième mode de réalisation de l'invention.
On the drawings:
  • the figure 1 is a vertical sectional view of an exemplary dispensing device according to a first embodiment of the invention,
  • the figure 2 is a perspective view of an example of a spray nozzle that can equip the device of the figure 1 ,
  • the figure 3 is a sectional view along line III-III of the figure 1 ,
  • and the figure 4 is a view similar to the figure 3 in a second embodiment of the invention.

Sur les différentes figures, les mêmes références désignent des éléments identiques ou similaires.In the different figures, the same references designate identical or similar elements.

La figure 1 représente un dispositif de distribution 1 pour produit fluide, destiné à distribuer par exemple un produit cosmétique ou similaire, présentant notamment une consistance liquide ou semi-liquide.The figure 1 represents a distribution device 1 for a fluid product, intended to dispense for example a cosmetic product or the like, in particular having a liquid or semi-liquid consistency.

Le dispositif de distribution 1 représenté sur la figure 1 comprend un réservoir 2 contenant du produit fluide, sous pression ou non, et un mécanisme de distribution 3 tel qu'une pompe manuelle de pulvérisation (ou le cas échéant une valve si le produit fluide est sous pression dans le réservoir 2).The dispensing device 1 shown on the figure 1 comprises a reservoir 2 containing fluid product, under pressure or not, and a dispensing mechanism 3 such as a manual spray pump (or optionally a valve if the fluid is under pressure in the tank 2).

Ce mécanisme de distribution 3 comportant une tige d'actionnement creuse 4 qui s'étend selon un axe central Z et qui est montée coulissante dans le corps 5 du mécanisme de distribution. La tige d'actionnement 4 est adaptée pour permettre une sortie de produit fluide lorsqu'on enfonce ladite tige d'actionnement 4 dans le corps 5. La sortie du produit fluide en question peut éventuellement se faire à relativement basse pression, par exemple à une pression inférieure à 4 bars.This dispensing mechanism 3 comprising a hollow actuating rod 4 which extends along a central axis Z and which is slidably mounted in the body 5 of the dispensing mechanism. The actuating rod 4 is adapted to allow a fluid product outlet when said actuating rod 4 is pressed into the body 5. The outlet of the fluid product in question can optionally be carried out at relatively low pressure, for example at a pressure below 4 bar.

Un poussoir 6 est emmanché sur la tige d'actionnement 4. Ce poussoir 6 peut être par exemple moulé d'une seule pièce en matière synthétique thermoplastique, notamment en polyoléfine (par exemple, polypropylène ou similaire).A pusher 6 is fitted on the actuating rod 4. This pusher 6 may for example be molded in one piece of thermoplastic synthetic material, in particular polyolefin (for example, polypropylene or the like).

Comme représenté sur les figures 1 et 3, le poussoir 6 peut comporter :

  • une paroi supérieure 7 sensiblement horizontale,
  • une jupe 8 sensiblement cylindrique, centrée sur l'axe Z, et s'étendant vers le bas à partir de la périphérie de la face supérieure 7,
  • une paroi d'emmanchement 9 s'étendant vers le bas selon l'axe Z à partir de la paroi supérieure 7 et délimitant un puits central 10 de forme intérieure sensiblement cylindrique dans lequel est emboîtée la tige d'actionnement 4 susmentionnée,
  • une paroi latérale 11 de forme sensiblement cylindrique de révolution centrée sur un axe X qui, dans l'exemple représenté sur les dessins, est sensiblement perpendiculaire à l'axe central Z susmentionné, la partie supérieure de la paroi latérale 11 se fondant dans la paroi supérieure 7, et ladite paroi latérale 11 délimitant intérieurement un logement 12 de réception de buse sensiblement cylindrique de révolution autour de l'axe X, le fond de ce logement 12 de réception de buse étant formé par la paroi d'emmanchement 9 susmentionnée et ledit logement de réception de buse débouchant latéralement vers l'extérieur à l'opposé de ladite paroi d'emmanchement,
  • et un plot 13 de forme cylindrique centré sur l'axe X qui fait saillie dans le logement 12 de réception de buse à partir de la paroi d'emmanchement 9.
As shown on figures 1 and 3 the pusher 6 may comprise:
  • a substantially horizontal upper wall 7,
  • a substantially cylindrical skirt 8, centered on the Z axis, and extending downwards from the periphery of the upper face 7,
  • a fitting wall 9 extending downwards along the Z axis from the upper wall 7 and delimiting a central well 10 of substantially cylindrical inner shape in which the above-mentioned actuating rod 4 is fitted,
  • a side wall 11 of substantially cylindrical shape of revolution centered on an axis X which, in the example shown in the drawings, is substantially perpendicular to the aforementioned central axis Z, the upper part of the side wall 11 blending into the wall upper 7, and said side wall 11 internally defining a nozzle receiving housing 12 substantially cylindrical in rotation about the axis X, the bottom of the nozzle receiving housing 12 being formed by the aforementioned fitting wall 9 and said nozzle receiving housing opening laterally outwardly opposite said fitting wall,
  • and a stud 13 of cylindrical shape centered on the X axis which protrudes into the nozzle receiving housing 12 from the fitting wall 9.

Dans le logement 12 de réception de buse est emmanchée à force une buse de sortie 14 bien visible sur les figures 1 et 2. Cette buse de sortie, qui peut être réalisée par exemple en matière plastique moulée, comporte une paroi frontale 15 perpendiculaire à l'axe X et une paroi latérale 16 sensiblement cylindrique dont la surface extérieure est emmanchée serrée dans le logement de réception de buse 12.In the nozzle receiving housing 12 is force-fitted an outlet nozzle 14 clearly visible on the figures 1 and 2 . This outlet nozzle, which may be made for example of molded plastic, has a front wall 15 perpendicular to the X axis and a substantially cylindrical side wall 16 whose outer surface is tightly fitted into the nozzle receiving housing 12.

La paroi frontale 15 de la buse de sortie est percée d'un orifice de sortie 17 pouvant être par exemple centré sur l'axe X. Cet orifice de sortie 17 communique avec une chambre intermédiaire 18 creusée dans la face intérieure de la paroi frontale 15, laquelle chambre intermédiaire communique avec un ou plusieurs canaux 19 d'arrivée de fluide eux-mêmes creusés dans la face intérieure de la paroi frontale. Dans l'exemple considéré ici, la chambre intermédiaire 18 présente une forme sensiblement cylindrique centrée sur l'axe X et les canaux 19, qui sont ici au nombre de 3, sont disposés sensiblement tangentiellement par rapport à la chambre intermédiaire 18, de façon à provoquer un tourbillonnement du fluide arrivant par les canaux 19 dans la chambre intermédiaire 18. La disposition décrite ci-dessus de la chambre intermédiaire 18 et des canaux 19 n'est donnée qu'à titre d'illustration et pourrait être modifiée sans sortir du cadre de la présente invention.The front wall 15 of the outlet nozzle is pierced with an outlet orifice 17 which may be for example centered on the axis X. This outlet orifice 17 communicates with an intermediate chamber 18 hollowed out in the inner face of the front wall 15 which intermediate chamber communicates with one or more fluid inlet channels 19 themselves dug in the inner face of the front wall. In the example considered here, the intermediate chamber 18 has a substantially cylindrical shape centered on the X axis and the channels 19, which here are 3 in number, are arranged substantially tangentially with respect to the intermediate chamber 18, so as to cause a swirl of the fluid arriving through the channels 19 in the intermediate chamber 18. The above described arrangement of the intermediate chamber 18 and the channels 19 is given for illustrative purposes only and could be modified without depart from the scope of the present invention.

Les canaux 19 communiquent avec un espace annulaire 20 aménagé entre la surface intérieure de la paroi latérale 16 de la buse et la surface extérieure du plot 13 du poussoir, et cet espace annulaire 20 communique lui-même, par l'intermédiaire d'un conduit 21 ménagé dans le poussoir, avec l'extrémité supérieure du puits 10 dans lequel est emboîtée la tige d'actionnement 4 du mécanisme de distribution 3.The channels 19 communicate with an annular space 20 arranged between the inner surface of the side wall 16 of the nozzle and the outer surface of the pad 13 of the pusher, and this annular space 20 communicates itself, via a conduit 21 formed in the pusher, with the upper end of the well 10 in which is engaged the actuating rod 4 of the dispensing mechanism 3.

Selon l'invention, un évidement 22 est ménagé dans le plot 13. Cet évidement 22 peut présenter par exemple une forme sensiblement cylindrique de révolution autour de l'axe X, ou le cas échéant une forme légèrement divergente vers l'extérieur. L'évidement 22 s'étend selon l'axe X entre un fond formé par une partie de la paroi d'emmanchement 9 et une extrémité ouverte débouchant dans la chambre intermédiaire 18, en regard de l'orifice de sortie 17.According to the invention, a recess 22 is formed in the stud 13. This recess 22 may for example have a substantially cylindrical shape of revolution about the X axis, or possibly a slightly divergent shape towards the outside. The recess 22 extends along the X axis between a bottom formed by a portion of the fitting wall 9 and an open end opening into the intermediate chamber 18, facing the outlet orifice 17.

Comme représenté sur les figures 1 et 3, la paroi d'emmanchement 9 présente, dans un plan perpendiculaire à l'axe Z et contenant l'axe X, une première épaisseur e1, en dehors du logement 12 de réception de buse, et une deuxième épaisseur e2 au niveau de l'évidement 22. La deuxième épaisseur e2 est inférieure à 1,1 fois la première épaisseur e1. En particulier, la deuxième épaisseur e2 peut être inférieure ou égale à la première épaisseur e1. Dans l'exemple des figures 1 et 3, la deuxième épaisseur e2 est inférieure à la première épaisseur e1, et ladite épaisseur e2 est par exemple comprise entre 0,3 et 0,7 fois la première épaisseur e1.As shown on figures 1 and 3 , the fitting wall 9 has, in a plane perpendicular to the axis Z and containing the axis X, a first thickness e1, outside the nozzle receiving housing 12, and a second thickness e2 at the level of the recess 22. The second thickness e2 is less than 1.1 times the first thickness e1. In particular, the second thickness e2 may be less than or equal to the first thickness e1. In the example of figures 1 and 3 the second thickness e2 is smaller than the first thickness e1, and said thickness e2 is, for example, between 0.3 and 0.7 times the first thickness e1.

Par ailleurs, l'évidement 22 du plot délimite une paroi annulaire 23 dudit plot qui présente une troisième épaisseur e3 (mesurée radialement par rapport à l'axe X) généralement inférieure à 0,7 fois la première épaisseur e1 et par exemple comprise entre 0,2 et 0,6 fois la première épaisseur e1.Furthermore, the recess 22 of the stud delimits an annular wall 23 of said stud which has a third thickness e3 (measured radially with respect to the axis X) generally less than 0.7 times the first thickness e1 and for example between 0 , 2 and 0.6 times the first thickness e1.

La paroi latérale 11 représente une quatrième épaisseur e4 qui peut être inférieure à 0,8 fois la première épaisseur e1, et par exemple comprise entre 0,3 et 0,7 fois la première épaisseur e1.The side wall 11 represents a fourth thickness e4 which may be less than 0.8 times the first thickness e1, and for example between 0.3 and 0.7 times the first thickness e1.

La présence de l'évidement 22 dans le plot permet d'éviter des irrégularités dans la forme intérieure de la paroi d'embranchement 9, et donc d'assurer un bon emmanchement du poussoir 6 sur la tige d'actionnement 4.The presence of the recess 22 in the stud makes it possible to avoid irregularities in the internal shape of the branch wall 9, and thus to ensure a good fit of the pusher 6 on the actuating rod 4.

L'orifice de sortie 17 susmentionnée présente un premier diamètre d1 qui est généralement de l'ordre de quelques dixièmes de millimètres, par exemple d'environ 0,3 millimètre, tandis que le diamètre maximum d2 de l'évidement 22 peut être supérieur à 2 fois le diamètre d1, par exemple compris entre 2 et 3 fois le diamètre d1. Dans l'exemple considéré ici, le diamètre maximum de l'évidement 22 peut ainsi être par exemple de l'ordre de 0,8 millimètre. Enfin, la chambre intermédiaire 18 peut présenter un diamètre d3 supérieur au diamètre d2, par exemple de l'ordre de 0,9 millimètre, dans le cas particulier représenté sur les dessins.The aforementioned outlet orifice 17 has a first diameter d1 which is generally of the order of a few tenths of a millimeter, for example of approximately 0.3 millimeter, while the maximum diameter d2 of the recess 22 may be greater than 2 times the diameter d1, for example between 2 and 3 times the diameter d1. In the example considered here, the maximum diameter of the recess 22 can thus be, for example, of the order of 0.8 millimeters. Finally, the intermediate chamber 18 may have a diameter d3 greater than the diameter d2, for example of the order of 0.9 millimeters, in the particular case shown in the drawings.

Lorsqu'un utilisateur appuie sur le poussoir 6, il actionne ainsi le mécanisme de distribution 3 qui provoque une expulsion de produit fluide sous relativement basse pression par la tige d'actionnement 4. Ce produit fluide sort à l'extrémité supérieure du puits 10, et ensuite transite successivement dans le conduit 21, le passage annulaire 20, les canaux 19, la chambre intermédiaire 18 où il est mis en rotation, puis il est expulsé par l'orifice de sortie 18. En sortant de l'orifice de sortie 18, le produit fluide est fractionné en une multitude de fines goutelettes qui sont projetées vers l'extérieur en formant un jet en forme de cône divergent. Grâce à la présence de l'évidement 22, et même si la pression du produit fluide en sortie du mécanisme de distribution 3 est relativement faible, les gouttelettes en question sont réparties de façon relativement homogène à l'intérieur du cône susmentionné.When a user presses the pusher 6, he thus actuates the dispensing mechanism 3 which causes an expulsion of fluid under relatively low pressure by the actuating rod 4. This fluid comes out at the upper end of the well 10, and then passes successively in the duct 21, the annular passage 20, the channels 19, the intermediate chamber 18 where it is rotated, then it is expelled through the outlet orifice 18. Leaving the outlet orifice 18 , the Fluid product is fractionated into a multitude of fine droplets that are projected outwardly forming a divergent cone-shaped jet. Due to the presence of the recess 22, and even if the pressure of the fluid product at the outlet of the dispensing mechanism 3 is relatively small, the droplets in question are distributed relatively homogeneously within the aforementioned cone.

Dans la deuxième forme de réalisation de l'invention, le dispositif de distribution est identique ou similaire à celui décrit précédemment, avec uniquement les différences suivantes, bien visibles sur la figure 4 :

  • l'épaisseur e1 de la paroi d'embranchement 9 est sensiblement constante sur toute la périphérie de ladite paroi d'embranchement, y compris au niveau du fond de l'évidement 22, de sorte que l'épaisseur e2 est ici égale à l'épaisseur e1,
  • et l'épaisseur de la paroi latérale 11 qui délimite le logement de réception de buse 12 est réduite au niveau de la jonction de cette paroi latérale 11 avec la paroi d'embranchement 9.
In the second embodiment of the invention, the dispensing device is identical or similar to that described above, with only the following differences, clearly visible on the figure 4 :
  • the thickness e1 of the branch wall 9 is substantially constant over the entire periphery of said branch wall, including at the bottom of the recess 22, so that the thickness e2 is here equal to thickness e1,
  • and the thickness of the side wall 11 which delimits the nozzle receiving housing 12 is reduced at the junction of this side wall 11 with the branch wall 9.

Claims (9)

  1. Device for dispensing a fluid product, comprising:
    - a push button (6) moulded in plastic material which comprises at least:
    -- an annular press fitting wall (9) delimiting a well (10) intended to receive the fluid product to be dispensed, said well extending longitudinally according to a central axis (Z),
    -- a lateral wall (11) extending from the press fitting wall (9) and delimiting a housing (12) for receiving the nozzle open towards the exterior, the press fitting wall (9) having a first thickness (e1) outside of the housing (12) for receiving the nozzle, in a plane perpendicular to the central axis (Z) and containing said housing (12) for receiving the nozzle,
    -- a stud (13) protruding in the said housing (12) for receiving the nozzle from the said press fitting wall (9),
    - a nozzle (14) nested in said housing (12) for receiving the nozzle on said stud (13) and delimiting with this stud an intermediary chamber (18) which is connected to the well (10) and which exits towards the exterior by an outlet orifice (17) arranged in the nozzle (14),
    a recess (22) being arranged in the stud (13) and open across from the outlet orifice (17) of the nozzle,
    characterised in that said press fitting wall (9) has a second thickness (e2) across from said recess (22), the second thickness (e2) being less than 1.1 times the first thickness (e1).
  2. Device for dispensing according to claim 1, wherein the second thickness (e2) is at most equal to the first thickness (e1).
  3. Device for dispensing according to claim 1 or claim 2, wherein the stud (13) comprises an annular wall (23) delimited interiorly by said recess (22), this annular wall (23) having a third thickness (e3) less than 0.7 times said first thickness (e1).
  4. Device for dispensing according to claim 3, wherein the third thickness (e3) is between 0.2 and 0.6 times the first thickness (e1).
  5. Device for dispensing according to any of the preceding claims, wherein said lateral wall (11) has a fourth thickness (e4) less than 0.8 times said first thickness (e1).
  6. Device for dispensing according to claim 5, wherein the fourth thickness (e4) is between 0.3 and 0.7 times the first thickness (e1).
  7. Device for dispensing according to any of the preceding claims, wherein the outlet orifice (17) has a first diameter (d1) and the recess (22) has a second diameter (d2), the second diameter (d2) being greater than 2 times the first diameter (d1).
  8. Device for dispensing according to claim 7, wherein the second diameter (d2) is between 2 and 3 times the first diameter (d1).
  9. Device for dispensing according to any of the preceding claims, further comprising a mechanism for dispensing (3) provided with a hollow actuating rod (4) nested in the well (10) of the push button.
EP07117643A 2006-10-16 2007-10-01 Device for dispensing a liquid product Expired - Fee Related EP1914177B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609053A FR2907106B1 (en) 2006-10-16 2006-10-16 DISPENSING DEVICE FOR FLUID PRODUCT.

Publications (2)

Publication Number Publication Date
EP1914177A1 EP1914177A1 (en) 2008-04-23
EP1914177B1 true EP1914177B1 (en) 2010-07-28

Family

ID=37877058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07117643A Expired - Fee Related EP1914177B1 (en) 2006-10-16 2007-10-01 Device for dispensing a liquid product

Country Status (4)

Country Link
EP (1) EP1914177B1 (en)
DE (1) DE602007008028D1 (en)
ES (1) ES2347367T3 (en)
FR (1) FR2907106B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2946326B1 (en) * 2009-06-04 2011-08-05 Rexam Dispensing Sys PUSH BUTTON FOR A PRESSURIZED LIQUID DISTRIBUTION SYSTEM
FR2949762B1 (en) * 2009-09-10 2011-12-09 Rexam Dispensing Sys PUSH BUTTON FOR A SYSTEM FOR DISTRIBUTING A PRODUCT UNDER PRESSURE.
FR3032895B1 (en) * 2015-02-24 2019-11-01 Albea Le Treport PUSH BUTTON FOR A PRESSURE DISTRIBUTION SYSTEM OF A PRODUCT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260110A (en) * 1977-02-18 1981-04-07 Winfried Werding Spray nozzle, devices containing the same and apparatus for making such devices
FR2828821B1 (en) * 2001-08-23 2004-01-23 Valois Sa DISPENSING HEAD FOR A FLUID PRODUCT DISPENSER

Also Published As

Publication number Publication date
DE602007008028D1 (en) 2010-09-09
ES2347367T3 (en) 2010-10-28
EP1914177A1 (en) 2008-04-23
FR2907106A1 (en) 2008-04-18
FR2907106B1 (en) 2011-06-10

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