EP1932595B1 - Spraying nozzle, dispensing element comprising such a nozzle, dispenser comprising such an element and use of such a nozzle - Google Patents

Spraying nozzle, dispensing element comprising such a nozzle, dispenser comprising such an element and use of such a nozzle Download PDF

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Publication number
EP1932595B1
EP1932595B1 EP07123074A EP07123074A EP1932595B1 EP 1932595 B1 EP1932595 B1 EP 1932595B1 EP 07123074 A EP07123074 A EP 07123074A EP 07123074 A EP07123074 A EP 07123074A EP 1932595 B1 EP1932595 B1 EP 1932595B1
Authority
EP
European Patent Office
Prior art keywords
lateral surface
fluid product
outlet channel
spray nozzle
axis
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
EP07123074A
Other languages
German (de)
French (fr)
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EP1932595A1 (en
Inventor
Jean-Pierre Songbe
Bernard Clerget
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rexam Dispensing Systems SAS filed Critical Rexam Dispensing Systems SAS
Publication of EP1932595A1 publication Critical patent/EP1932595A1/en
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Publication of EP1932595B1 publication Critical patent/EP1932595B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B05B11/0005—Components or details
    • 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 invention relates to a spray nozzle, a dispensing member comprising such a nozzle, a dispenser comprising such a member and a use of such a nozzle.
  • the fluid comes out of the spray nozzle in the form of an aerosol comprising droplets of various sizes, which can be large, and whose spray angle is reduced, for example up to 10 °, or even in the form of 'a jet.
  • the recess allows a coating of the lateral surface of the outlet channel with a layer of immobilized fluid product on which the remainder of the fluid can slide without friction.
  • the fluid product can be broken down into fine droplets and form an aerosol having the desired spray angle.
  • the subject of the invention is a dispensing member comprising a generally cylindrical body and a spray nozzle as defined above, the body comprising a housing having a stop surface, and a suitable feed channel.
  • the spray nozzle being disposed in the housing, the front wall defining the housing outwardly and coming into contact with the abutment surface, the upstream end of the supply conduit being in communication with the feed channel.
  • the reservoir may contain a fluid having a viscosity of less than or equal to 10 Pa.s at 20 ° C.
  • the invention relates to a use of a spray nozzle as defined above for spraying a fluid product which has a viscosity of less than or equal to 10 Pa.s at 20 ° C.
  • a dispensing device 7 mounted in the opening 5 of the reservoir 3 is adapted to withdraw the fluid inside the reservoir 3 and deliver it under pressure to the outside.
  • the dispensing device 7 may comprise a tubular body 8 which extends along an axis 9 and a nozzle 10 mounted in the open upper end of the body 8.
  • the nozzle 10 is partially movable inside the body 8 in translation along the axis 9.
  • the lower end also open body 8 is in communication with the reservoir 3, for example by means of a tubular fixing wall 11 receiving a plunger tube 12 by fitting.
  • the dispensing device 7 may be manually operable.
  • the dispensing device 7 may be a valve mounted on the reservoir 3, which is then pressurized, and in which the nozzle 10 comprises at least one closable orifice that can be placed in communication with the inside of the body 8.
  • the device distribution 7 may be a pump comprising a compression chamber defined by an intake valve near the lower end of the body 8, an exhaust valve and a piston integral with the base of the nozzle 10 and movable sealingly inside the body 8.
  • a fixing member fixes the dispensing device 7 to the reservoir 3.
  • the fixing member is a metal band 13 which is crimped, on the one hand, on a collar integral with the body 8 of the dispensing device, and, on the other hand, on a flange 14 of the neck 6. It can be provided to interpose a seal 15 between the upper surface of the neck 6 and a radial surface 16 of the hoop 13.
  • the attachment of the dispensing device 7 to the reservoir is not limited to this embodiment.
  • a dispensing member for example in the form of a push button 17, can be mounted on the upper end of the nozzle 10.
  • the push button 17 comprises a generally cylindrical body which extends along an axis 18.
  • the body has an upper actuating wall 19 which extends substantially radially with respect to the axis 18 of the push button 17 and from the edge of which a lateral skirt 20 extends along the axis 18 of the pushbutton 17.
  • the push button 17 further comprises a supply channel in communication with the nozzle 10.
  • the supply channel may comprise, for example, an axial sleeve 25 which extends from the actuating wall 19 inside the nozzle. the skirt 20 along the axis 18 of the body, and a radial passage 26 generally perpendicular to the axis 18 of the body and whose upstream and downstream ends respectively open in the axial sleeve 25 and in the annular space 24 of the housing 21.
  • the lower end of the axial sleeve 25 may be sealingly attached, for example by fitting and / or snapping, on the upper end of the nozzle 10.
  • the axis 22 of the housing 21 and the feed channel may be parallel, whether or not merged, with the axis 18 of the dispenser member to enable dispensing axial fluid product.
  • the dispensing member may form a nozzle mounted on a dispensing device 7 or directly on the reservoir 3.
  • a spray nozzle 28 is disposed in the housing 21.
  • the spray nozzle 28 comprises a front wall 29 which has an upstream face 33 and a downstream face 34 and which delimits the housing 21 towards the outside.
  • the spray nozzle 28 also includes an outlet channel which extends through the end wall 28.
  • the outlet channel comprises an upstream section forming a swirl chamber 32 and a downstream section forming an outlet port 30.
  • the vortex chamber 32 is delimited by a front surface 32a formed on the upstream face 33 of the front wall 29 and a lateral surface 32b substantially of revolution about an axis A1 perpendicular to the front wall 29.
  • the lateral surface 32b the vortex chamber 32 may be substantially cylindrical and have a first cross section.
  • the outlet orifice 30 extends between an upstream end formed on the front surface 32a of the swirl chamber 32 and a downstream end formed on the downstream face 34 of the front wall 29 to open outwards.
  • the outlet orifice 30 is delimited by a lateral surface 30b substantially of revolution about an axis A2 perpendicular to the end wall 29.
  • the lateral surface 30b of the outlet orifice 30 may be substantially cylindrical and have a large diameter. second cross section of dimensions smaller than those of the first cross section.
  • lateral surface substantially of revolution is meant a surface generated by the displacement of a rectilinear generatrix, in the case of a cylindrical or frustoconical surface, or curve, parallel to the corresponding axis, along a closed directional curve , in particular a circle or an ellipse.
  • a substantially revolutional side surface also designates a such a surface presenting locally, as described below, singularities.
  • the section of the outlet orifice 30 is circular or elliptical.
  • the lateral surface 30b of the outlet orifice 30 may also be frustoconical with a convergence or a divergence between its upstream end and its downstream end.
  • the axis A2 of the outlet orifice 30 can be offset with respect to the axis A1 of the swirl chamber 32, as shown in FIG. figure 2 , or coincident with the axis A1 of the vortex chamber 32 to form a common axis A of the side surface of the outlet channel, which side surface is formed jointly by the side surfaces 30b, 32b of the outlet port 30 and the vortex chamber 32.
  • the spray nozzle 28 comprises at least one supply duct 36.
  • the supply duct 36 and the swirl chamber 32 are adapted to drive the fluid product. in a rotational movement about the axis A1 of the vortex chamber 32 in a direction of rotation materialized on the Figures 2 and 3 by an arrow F.
  • Each supply duct 36 extends in a plane perpendicular to the axis A1 of the vortex chamber 32 between an upstream end and a downstream end. Each supply duct 36 extends tangentially with respect to the lateral surface 32b of the vortex chamber 32 and the downstream end of each supply duct 36 opens into the lateral surface 32b of the vortex chamber 32.
  • Each supply duct 36 may be delimited by bottom surface 38 and internal lateral edges 39 and outer 40 substantially perpendicular to the bottom surface 38. It can be provided that the lateral edges 39, 40 converge towards each other from the upstream end to the downstream end of the feed duct 36.
  • the front wall 29 may have, on its upstream face 33, a generally flat front surface and an annular boss 37, for example integral with the front wall 29, projecting from the front surface of the front wall 29.
  • the boss Annular 37 internally defines the vortex chamber 32.
  • the annular boss 37 also delimits externally a peripheral chamber 35.
  • the lateral surface 32b of the vortex chamber 32 comprises a relief arranged radially relative to to the axis A1 and adapted to form a static surface layer of fluid product.
  • the relief then forms, on the lateral surface 32b of the vortex chamber 32, a singularity which immobilizes a stable, surface layer of fluid product.
  • the circulation of the fluid product on the lateral surface 32b forms a boundary layer on the lateral surface 32b which is immobilized by the relief to coat the lateral surface 32b with a coating layer of a predetermined thickness on which the remainder of the fluid can slide. without rubbing.
  • the relief may comprise one or more striations parallel to the axis A2. It can also be provided that the relief comprises a plurality of asperities forming a roughness on the lateral surface of the outlet channel, the roughness being local, distributed, continuous or discontinuous.
  • the spray nozzle 28 may constitute an insert which is fitted into the housing 21 of the push button 17.
  • the spray nozzle 28 may then comprise, on the side of the upstream face 33 of the end wall 29, an associated wall 31 which extends in the vicinity of the periphery of the front wall 29 substantially perpendicular to the front wall 29.
  • the spray nozzle 28 is integral with the body of the dispensing member 17, the abutment surface 27 being attached, for example by the insertion of a inserted in the housing 21. This avoids the risk of expulsion of the spray nozzle 28 when spraying the fluid.
  • the swirl chamber 32 then formed at the interface between the front wall 29 and the abutment surface 27 is delimited by the front surface 32a, the abutment surface 27 and the lateral surface 32b extending between the front surface 32a and the abutment surface 27.
  • the supply duct 36 is delimited by the bottom surface 38, the abutment surface 27 and the lateral edges 39, 40 which extend between the bottom surface 38 and abutment surface 27.
  • the spray nozzle 28 as described above can be used for spraying any type of fluid, for example a viscous fluid product having a viscosity greater than 0.001 Pa.s at 20 ° C. It is expected, moreover, that the nozzle of spraying 28 can be used to spray a fluid that has a viscosity of less than or equal to 10 Pa.s at 20 ° C.
  • the fluid product disposed within the tank 3 may therefore have a viscosity in the range provided above.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)

Description

L'invention se rapporte à une buse de pulvérisation, un organe de distribution comprenant une telle buse, un distributeur comprenant un tel organe ainsi qu'à une utilisation d'une telle buse.The invention relates to a spray nozzle, a dispensing member comprising such a nozzle, a dispenser comprising such a member and a use of such a nozzle.

En particulier, l'invention se rapporte à une buse de pulvérisation pour produit fluide comprenant :

  • une paroi frontale,
  • un canal de sortie s'étendant au travers de ladite paroi frontale, ledit canal de sortie étant délimité par une surface latérale sensiblement de révolution autour d'un axe perpendiculaire à la paroi frontale, la surface latérale du canal de sortie comprenant au moins un relief agencé radialement par rapport à l'axe,
  • un conduit d'amenée adapté pour amener du produit fluide dans le canal de sortie, le conduit d'amenée et le canal de sortie étant adaptés pour entraîner le produit fluide dans un mouvement de rotation autour de l'axe selon un sens de rotation, ledit conduit d'amenée s'étendant dans un plan perpendiculaire à l'axe, sensiblement tangentiellement par rapport à la surface latérale du canal de sortie, entre une extrémité amont adaptée pour être alimentée en produit fluide et une extrémité aval débouchant dans la surface latérale du canal de sortie.
In particular, the invention relates to a fluid spray nozzle comprising:
  • a front wall,
  • an outlet channel extending through said front wall, said outlet channel being delimited by a substantially circular lateral surface about an axis perpendicular to the front wall, the lateral surface of the outlet channel comprising at least one relief arranged radially with respect to the axis,
  • a supply duct adapted to supply fluid into the outlet channel, the supply duct and the outlet duct being adapted to drive the fluid product in a rotational movement about the axis in a direction of rotation, said supply duct extending in a plane perpendicular to the axis, substantially tangentially with respect to the lateral surface of the outlet channel, between an upstream end adapted to be fed with fluid product and a downstream end opening into the lateral surface; the output channel.

Une buse de pulvérisation de ce type est utilisée pour obtenir en sortie du canal de sortie, une distribution vers l'extérieur du produit fluide sous pression sous la forme d'un aérosol composé de gouttelettes individuelles, et présentant une forme conique avec un angle de pulvérisation déterminé.A spray nozzle of this type is used to obtain at the output of the outlet channel, an outward distribution of the pressurized fluid in the form of an aerosol composed of individual droplets, and having a conical shape with an angle of determined spraying.

Une telle buse de pulvérisation est connue notamment du document EP-0 796 661 qui prévoit des saillies formées sur la surface latérale d'une chambre tourbillonnaire.Such a spray nozzle is known in particular from the document EP-0 796 661 which provides projections formed on the lateral surface of a vortex chamber.

Or la buse de pulvérisation connue pose des problèmes pour la pulvérisation d'un produit fluide visqueux, c'est-à-dire un produit fluide présentant une viscosité supérieure à 0,001 Pa.s à 20°C.But the known spray nozzle poses problems for spraying a viscous fluid product, i.e. a fluid having a viscosity of greater than 0.001 Pa.s at 20 ° C.

En effet, la surface latérale du canal de sortie perturbe de manière non maîtrisée la circulation du produit fluide dans le canal de sortie. Il résulte une perte globale de charge pour le produit fluide et une diminution de la pression avec laquelle le produit fluide est entraîné.Indeed, the lateral surface of the outlet channel disrupts uncontrollably the circulation of the fluid in the outlet channel. This results in an overall loss of charge for the fluid product and a decrease in the pressure with which the fluid product is entrained.

Le produit fluide sort de la buse de pulvérisation sous la forme d'un aérosol comprenant des gouttelettes de dimensions variées, pouvant être importantes, et dont l'angle de pulvérisation est réduit, par exemple jusqu'à 10°, voire sous la forme d'un jet.The fluid comes out of the spray nozzle in the form of an aerosol comprising droplets of various sizes, which can be large, and whose spray angle is reduced, for example up to 10 °, or even in the form of 'a jet.

L'invention vise à résoudre les problèmes évoqués ci-dessus.The invention aims to solve the problems mentioned above.

A cet effet, l'invention propose une buse de pulvérisation du type précité dans laquelle le relief comprend au moins un évidement ménagé sur la surface latérale du canal de sortie et adapté pour former une couche superficielle statique de produit fluide.For this purpose, the invention proposes a spray nozzle of the aforementioned type in which the relief comprises at least one recess provided on the lateral surface of the outlet channel and adapted to form a static surface layer of fluid product.

Ainsi, l'évidement permet de réaliser un revêtement de la surface latérale du canal de sortie avec une couche de produit fluide immobilisée sur laquelle le reste du produit fluide peut glisser sans frottement.Thus, the recess allows a coating of the lateral surface of the outlet channel with a layer of immobilized fluid product on which the remainder of the fluid can slide without friction.

En interposant, entre la surface latérale du canal de sortie et le produit fluide circulant, une couche superficielle statique de produit fluide, la perte globale de charge du produit fluide est limitée et la pression avec laquelle le produit fluide est entraîné est préservée. A la sortie de la buse de pulvérisation, le produit fluide peut se fractionner en fines gouttelettes et former un aérosol présentant l'angle de pulvérisation souhaité.By interposing, between the lateral surface of the outlet channel and the circulating fluid product, a static surface layer of fluid product, the overall loss of charge of the fluid product is limited and the pressure with which the fluid product is entrained is preserved. At the outlet of the spray nozzle, the fluid product can be broken down into fine droplets and form an aerosol having the desired spray angle.

Dans des modes de réalisation particuliers, la buse de pulvérisation peut présenter, de manière éventuellement complémentaire, une ou plusieurs des dispositions suivantes :

  • le canal de sortie comprend un tronçon amont formant une chambre tourbillonnaire et présentant une première section transversale, et un tronçon aval formant un orifice de sortie et présentant une deuxième section transversale de dimensions inférieures à celles de la première section transversale, l'extrémité aval du conduit d'amenée débouchant dans la surface latérale de la chambre tourbillonnaire, le relief étant agencé sur la surface latérale de la chambre tourbillonnaire ;
  • le canal de sortie comprend un tronçon formant un orifice de sortie qui s'étend entre une extrémité amont et une extrémité aval, l'extrémité aval du conduit d'amenée débouchant dans la surface latérale de l'orifice de sortie au voisinage de l'extrémité amont dudit orifice de sortie, le relief étant agencé sur la surface latérale de l'orifice de sortie : les pertes de charge sont encore limitées par le fait que le conduit d'amenée débouche directement dans l'orifice de sortie ;
  • l'évidement forme une rampe s'écartant de l'axe par rapport au sens de rotation du produit fluide dans le canal de sortie ;
  • le relief comprend une pluralité d'aspérités formant une rugosité sur la surface latérale du canal de sortie ;
  • la buse de pulvérisation comprend plusieurs conduits d'amenée.
In particular embodiments, the spray nozzle may optionally present one or more of the following:
  • the outlet channel comprises an upstream section forming a swirl chamber and having a first transverse section, and a downstream section forming an outlet orifice and having a second cross section of dimensions smaller than those of the first transverse section, the downstream end of the supply duct opening into the lateral surface of the vortex chamber, the relief being arranged on the lateral surface of the vortex chamber;
  • the outlet channel comprises a section forming an outlet orifice which extends between an upstream end and a downstream end, the downstream end of the supply duct opening into the lateral surface of the outlet orifice in the vicinity of the upstream end of said outlet orifice, the relief being arranged on the lateral surface of the outlet orifice: the pressure drops are further limited by the fact that the supply duct opens directly into the outlet orifice;
  • the recess forms a ramp deviating from the axis with respect to the direction of rotation of the fluid product in the outlet channel;
  • the relief comprises a plurality of asperities forming a roughness on the lateral surface of the outlet channel;
  • the spray nozzle comprises several supply ducts.

D'autre part, l'invention a pour objet un organe de distribution comprenant un corps généralement cylindrique et une buse de pulvérisation telle que définie ci-dessus, le corps comprenant un logement présentant une surface de butée, et un canal d'alimentation adapté pour alimenter le logement en produit fluide, la buse de pulvérisation étant disposée dans le logement, la paroi frontale délimitant le logement vers l'extérieur et venant en contact avec la surface de butée, l'extrémité amont du conduit d'amenée étant en communication avec le canal d'alimentation.On the other hand, the subject of the invention is a dispensing member comprising a generally cylindrical body and a spray nozzle as defined above, the body comprising a housing having a stop surface, and a suitable feed channel. for supplying the housing fluid product, the spray nozzle being disposed in the housing, the front wall defining the housing outwardly and coming into contact with the abutment surface, the upstream end of the supply conduit being in communication with the feed channel.

Par ailleurs, l'invention propose un distributeur comprenant :

  • un réservoir présentant une ouverture et adapté pour contenir un produit fluide,
  • un dispositif de distribution monté dans l'ouverture et comprenant un gicleur déplaçable en translation, en communication avec le réservoir et adapté pour délivrer le produit fluide sous pression,
  • un organe de distribution tel que défini ci-dessus, monté sur le gicleur pour déplacer ledit gicleur, le canal d'alimentation étant en communication avec le gicleur.
Furthermore, the invention proposes a dispenser comprising:
  • a reservoir having an opening and adapted to contain a fluid,
  • a dispensing device mounted in the opening and comprising a nozzle displaceable in translation, in communication with the reservoir and adapted to deliver the fluid under pressure,
  • a dispensing member as defined above, mounted on the nozzle to move said nozzle, the supply channel being in communication with the nozzle.

Le réservoir peut contenir un produit fluide présentant une viscosité inférieure ou égale à 10 Pa.s à 20°C.The reservoir may contain a fluid having a viscosity of less than or equal to 10 Pa.s at 20 ° C.

En outre, l'invention a pour objet une utilisation d'une buse de pulvérisation telle que définie ci-dessus pour pulvériser un produit fluide qui présente une viscosité inférieure ou égale à 10 Pa.s à 20°C.In addition, the invention relates to a use of a spray nozzle as defined above for spraying a fluid product which has a viscosity of less than or equal to 10 Pa.s at 20 ° C.

D'autres objets et avantages de l'invention apparaîtront à la lecture de la description qui suit, faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue partielle en coupe longitudinale d'un distributeur de produit fluide comprenant une buse de pulvérisation,
  • la figure 2 est une vue agrandie en perspective de la buse de pulvérisation du distributeur de la figure 1 selon un mode de réalisation,
  • la figure 3 est une vue agrandie en perspective tronquée de la buse de pulvérisation du distributeur de la figure 1 selon une variante.
Other objects and advantages of the invention will appear on reading the description which follows, made with reference to the appended drawings in which:
  • the figure 1 is a partial view in longitudinal section of a fluid dispenser comprising a spray nozzle,
  • the figure 2 is an enlarged perspective view of the dispenser spray nozzle of the figure 1 according to one embodiment,
  • the figure 3 is an enlarged perspective view truncated of the spraying nozzle of the dispenser of the figure 1 according to a variant.

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

La figure 1 représente un distributeur 1 permettant la pulvérisation d'un produit fluide, c'est-à-dire la distribution du produit fluide sous forme d'un aérosol 2 composé de gouttelettes individuelles et de forme généralement conique avec un angle de pulvérisation α déterminé.The figure 1 represents a distributor 1 for spraying a fluid product, that is to say the distribution of the fluid in the form of an aerosol 2 composed of individual droplets and of generally conical shape with a determined spray angle α.

Le distributeur 1 comprend un réservoir 3 contenant le produit fluide. Le réservoir 3 peut comprendre un fond et une paroi généralement cylindrique qui s'étend autour d'un axe 4 perpendiculaire au fond. Le réservoir 3 présente une ouverture 5 prévue à l'opposé du fond et délimitée, par exemple, par un col tubulaire 6 qui s'étend sensiblement coaxialement à l'axe 4 du réservoir 3.The dispenser 1 comprises a reservoir 3 containing the fluid product. The reservoir 3 may comprise a bottom and a generally cylindrical wall which extends around an axis 4 perpendicular to the bottom. The reservoir 3 has an opening 5 provided opposite the bottom and delimited, for example, by a tubular neck 6 which extends substantially coaxially with the axis 4 of the reservoir 3.

Un dispositif de distribution 7 monté dans l'ouverture 5 du réservoir 3 est adapté pour prélever le produit fluide à l'intérieur du réservoir 3 et le délivrer sous pression vers l'extérieur.A dispensing device 7 mounted in the opening 5 of the reservoir 3 is adapted to withdraw the fluid inside the reservoir 3 and deliver it under pressure to the outside.

Dans la suite de la description les termes « bas » ou « inférieur » et « haut » ou « supérieur » seront compris par rapport à l'orientation du réservoir 3 reposant sur le fond. Les termes « amont » et « aval » seront compris par rapport au sens de circulation du produit fluide depuis le réservoir vers l'extérieur.In the remainder of the description the terms "low" or "lower" and "high" or "higher" will be understood relative to the orientation of the tank 3 resting on the bottom. The terms "upstream" and "downstream" will be understood with respect to the flow direction of the fluid product from the reservoir to the outside.

Le dispositif de distribution 7 peut comprendre un corps tubulaire 8 qui s'étend selon un axe 9 et un gicleur 10 monté dans l'extrémité supérieure ouverte du corps 8. Le gicleur 10 est déplaçable en partie à l'intérieur du corps 8 en translation selon l'axe 9. L'extrémité inférieure également ouverte du corps 8 est en communication avec le réservoir 3, par exemple au moyen d'une paroi tubulaire de fixation 11 recevant un tube plongeur 12 par emmanchement.The dispensing device 7 may comprise a tubular body 8 which extends along an axis 9 and a nozzle 10 mounted in the open upper end of the body 8. The nozzle 10 is partially movable inside the body 8 in translation along the axis 9. The lower end also open body 8 is in communication with the reservoir 3, for example by means of a tubular fixing wall 11 receiving a plunger tube 12 by fitting.

Dans des exemples particuliers, le dispositif de distribution 7 peut être actionnable manuellement. Le dispositif de distribution 7 peut être une valve montée sur le réservoir 3, qui est alors pressurisé, et dans laquelle le gicleur 10 comprend au moins un orifice obturable pouvant être mis en communication avec l'intérieur du corps 8. En variante, le dispositif de distribution 7 peut être une pompe comprenant une chambre de compression délimitée par un clapet d'admission à proximité de l'extrémité inférieure du corps 8, un clapet d'échappement et un piston solidaire de la base du gicleur 10 et déplaçable de façon étanche à l'intérieur du corps 8.In particular examples, the dispensing device 7 may be manually operable. The dispensing device 7 may be a valve mounted on the reservoir 3, which is then pressurized, and in which the nozzle 10 comprises at least one closable orifice that can be placed in communication with the inside of the body 8. In a variant, the device distribution 7 may be a pump comprising a compression chamber defined by an intake valve near the lower end of the body 8, an exhaust valve and a piston integral with the base of the nozzle 10 and movable sealingly inside the body 8.

Le dispositif de distribution 7 est fixé coaxialement sur le col 6 du réservoir 3. L'extrémité inférieure libre du tube plongeur 12 reposant à proximité du fond du réservoir 3 de sorte à mettre en communication, avec le réservoir 3, le gicleur 10 dont l'extrémité supérieure fait saillie par rapport à l'ouverture 5 du réservoir 3. Le gicleur 10 peut ainsi délivrer le produit fluide sous une pression, par exemple supérieure à 2 bars.The dispensing device 7 is fixed coaxially on the neck 6 of the reservoir 3. The lower free end of the plunger tube 12 resting near the bottom of the reservoir 3 so as to put in communication with the reservoir 3, the nozzle 10 of which the the upper end protrudes from the opening 5 of the reservoir 3. The nozzle 10 can thus deliver the fluid under a pressure, for example greater than 2 bar.

Dans d'autres modes de réalisation non représentés, on pourrait prévoir que le réservoir 3 présente une ouverture inférieure 5 et que le dispositif de distribution 7 fonctionne de manière inversée, c'est-à-dire avec le gicleur 10 qui s'étend vers le bas. Dans ce cas, le tube plongeur 12 est remplacé par un dispositif de prélèvement adapté.In other embodiments not shown, it could be provided that the reservoir 3 has a lower opening 5 and that the dispensing device 7 operates in an inverted manner, that is to say with the nozzle 10 which extends towards the bottom. In this case, the plunger tube 12 is replaced by a suitable sampling device.

Dans le mode de réalisation représenté, un organe de fixation fixe le dispositif de distribution 7 au réservoir 3. Par exemple, sur la figure 1, l'organe de fixation est une frette métallique 13 qui est sertie, d'une part, sur une collerette solidaire du corps 8 du dispositif de distribution, et, d'autre part, sur un rebord 14 du col 6. On peut prévoir d'interposer un joint d'étanchéité 15 entre la surface supérieure du col 6 et une surface radiale 16 de la frette 13. Toutefois, la fixation du dispositif de distribution 7 au réservoir n'est pas limitée à cette réalisation.In the embodiment shown, a fixing member fixes the dispensing device 7 to the reservoir 3. For example, on the figure 1 , the fixing member is a metal band 13 which is crimped, on the one hand, on a collar integral with the body 8 of the dispensing device, and, on the other hand, on a flange 14 of the neck 6. It can be provided to interpose a seal 15 between the upper surface of the neck 6 and a radial surface 16 of the hoop 13. However, the attachment of the dispensing device 7 to the reservoir is not limited to this embodiment.

Pour actionner le dispositif de distribution 7 en déplaçant le gicleur 10 à l'intérieur du corps 8, un organe de distribution, par exemple sous la forme d'un bouton poussoir 17, peut être monté sur l'extrémité supérieure du gicleur 10.To actuate the dispensing device 7 by moving the nozzle 10 inside the body 8, a dispensing member, for example in the form of a push button 17, can be mounted on the upper end of the nozzle 10.

Le bouton poussoir 17 comprend un corps généralement cylindrique qui s'étend selon un axe 18. Le corps présente une paroi supérieure d'actionnement 19 qui s'étend sensiblement radialement par rapport à l'axe 18 du bouton poussoir 17 et depuis le bord de laquelle une jupe latérale 20 s'étend selon l'axe 18 du bouton poussoir 17.The push button 17 comprises a generally cylindrical body which extends along an axis 18. The body has an upper actuating wall 19 which extends substantially radially with respect to the axis 18 of the push button 17 and from the edge of which a lateral skirt 20 extends along the axis 18 of the pushbutton 17.

Au voisinage de la paroi d'actionnement 19, le corps du bouton poussoir 17 peut comprendre un logement cylindrique 21 selon un axe 22 généralement perpendiculaire à l'axe 18 du bouton poussoir 17, ménagé dans la jupe latérale 20 et présentant une surface de butée. En particulier, à l'intérieur du logement 21, un plot cylindrique 23 peut s'étendre coaxialement à l'axe 22 du logement 21 de sorte à former à l'intérieur du logement cylindrique 21 un espace sensiblement annulaire 24. Le plot 23 présente une surface d'extrémité aval 27 formant la surface de butée qui s'étend généralement perpendiculairement à l'axe 22 du logement 21.In the vicinity of the actuating wall 19, the body of the pushbutton 17 may comprise a cylindrical housing 21 along an axis 22 generally perpendicular to the axis 18 of the pushbutton 17, formed in the lateral skirt 20 and having a stop surface . In particular, inside the housing 21, a cylindrical stud 23 may extend coaxially with the axis 22 of the housing 21 so as to form inside the cylindrical housing 21 a substantially annular space 24. The stud 23 presents a downstream end surface 27 forming the abutment surface which extends generally perpendicular to the axis 22 of the housing 21.

Le bouton poussoir 17 comprend en outre un canal d'alimentation en communication avec le gicleur 10. Le canal d'alimentation peut comprendre, par exemple, un manchon axial 25 qui s'étend depuis la paroi d'actionnement 19 à l'intérieur de la jupe 20 selon l'axe 18 du corps, et un passage radial 26 généralement perpendiculaire à l'axe 18 du corps et dont les extrémités amont et aval débouchent respectivement dans le manchon axial 25 et dans l'espace annulaire 24 du logement 21. L'extrémité inférieure du manchon axial 25 peut être fixée de manière étanche, par exemple par emmanchement et ou encliquetage, sur l'extrémité supérieure du gicleur 10.The push button 17 further comprises a supply channel in communication with the nozzle 10. The supply channel may comprise, for example, an axial sleeve 25 which extends from the actuating wall 19 inside the nozzle. the skirt 20 along the axis 18 of the body, and a radial passage 26 generally perpendicular to the axis 18 of the body and whose upstream and downstream ends respectively open in the axial sleeve 25 and in the annular space 24 of the housing 21. The lower end of the axial sleeve 25 may be sealingly attached, for example by fitting and / or snapping, on the upper end of the nozzle 10.

Le canal d'alimentation permet d'alimenter le logement 21 en produit fluide sous pression délivré par le gicleur 10.The supply channel makes it possible to supply the housing 21 with fluid under pressure delivered by the nozzle 10.

Dans d'autres modes de réalisation, on peut toutefois prévoir que l'axe 22 du logement 21 et le canal d'alimentation soient parallèles, en étant confondus ou non, à l'axe 18 de l'organe de distribution pour permettre une distribution axiale du produit fluide. En outre, l'organe de distribution peut former un embout monté sur un dispositif de distribution 7 ou directement sur le réservoir 3.In other embodiments, provision can however be made for the axis 22 of the housing 21 and the feed channel to be parallel, whether or not merged, with the axis 18 of the dispenser member to enable dispensing axial fluid product. In addition, the dispensing member may form a nozzle mounted on a dispensing device 7 or directly on the reservoir 3.

Pour permettre la sortie du produit fluide sous pression sous la forme d'un aérosol 2 composé de fines gouttelettes individuelles, une buse de pulvérisation 28 est disposée dans le logement 21.To allow the exit of the pressurized fluid product in the form of an aerosol 2 composed of fines individual droplets, a spray nozzle 28 is disposed in the housing 21.

En particulier, la buse de pulvérisation 28 comprend une paroi frontale 29 qui présente une face amont 33 et une face aval 34 et qui délimite le logement 21 vers l'extérieur.In particular, the spray nozzle 28 comprises a front wall 29 which has an upstream face 33 and a downstream face 34 and which delimits the housing 21 towards the outside.

La buse de pulvérisation 28 comprend également un canal de sortie qui s'étend au travers de la paroi frontale 28.The spray nozzle 28 also includes an outlet channel which extends through the end wall 28.

Sur les figures 2 et 3, le canal de sortie comprend un tronçon amont formant une chambre tourbillonnaire 32 et un tronçon aval formant un orifice de sortie 30.On the Figures 2 and 3 the outlet channel comprises an upstream section forming a swirl chamber 32 and a downstream section forming an outlet port 30.

La chambre tourbillonnaire 32 est délimitée par une surface frontale 32a formée sur la face amont 33 de la paroi frontale 29 et une surface latérale 32b sensiblement de révolution autour d'un axe A1 perpendiculaire à la paroi frontale 29. Par exemple, la surface latérale 32b de la chambre tourbillonnaire 32 peut être sensiblement cylindrique et présenter une première section transversale.The vortex chamber 32 is delimited by a front surface 32a formed on the upstream face 33 of the front wall 29 and a lateral surface 32b substantially of revolution about an axis A1 perpendicular to the front wall 29. For example, the lateral surface 32b the vortex chamber 32 may be substantially cylindrical and have a first cross section.

L'orifice de sortie 30 s'étend entre une extrémité amont ménagée sur la surface frontale 32a de la chambre tourbillonnaire 32 et une extrémité aval ménagée sur la face aval 34 de la paroi frontale 29 pour déboucher vers l'extérieur. L'orifice de sortie 30 est délimité par une surface latérale 30b sensiblement de révolution autour d'un axe A2 perpendiculaire à la paroi frontale 29. Par exemple, la surface latérale 30b de l'orifice de sortie 30 peut être sensiblement cylindrique et présenter une deuxième section transversale de dimensions inférieures à celles de la première section transversale.The outlet orifice 30 extends between an upstream end formed on the front surface 32a of the swirl chamber 32 and a downstream end formed on the downstream face 34 of the front wall 29 to open outwards. The outlet orifice 30 is delimited by a lateral surface 30b substantially of revolution about an axis A2 perpendicular to the end wall 29. For example, the lateral surface 30b of the outlet orifice 30 may be substantially cylindrical and have a large diameter. second cross section of dimensions smaller than those of the first cross section.

Par surface latérale sensiblement de révolution, on entend une surface engendrée par le déplacement d'une génératrice rectiligne, dans le cas d'une surface cylindrique ou tronconique, ou courbe, parallèlement à l'axe correspondant, le long d'une courbe directrice fermée, notamment un cercle ou une ellipse. Une surface latérale sensiblement de révolution désigne également une telle surface présentant localement, comme décrit plus loin, des singularités.By lateral surface substantially of revolution, is meant a surface generated by the displacement of a rectilinear generatrix, in the case of a cylindrical or frustoconical surface, or curve, parallel to the corresponding axis, along a closed directional curve , in particular a circle or an ellipse. A substantially revolutional side surface also designates a such a surface presenting locally, as described below, singularities.

Ainsi, on peut prévoir que la section de l'orifice de sortie 30 soit circulaire ou elliptique. La surface latérale 30b de l'orifice de sortie 30 peut également être tronconique avec une convergence ou une divergence entre son extrémité amont et son extrémité aval.Thus, it can be provided that the section of the outlet orifice 30 is circular or elliptical. The lateral surface 30b of the outlet orifice 30 may also be frustoconical with a convergence or a divergence between its upstream end and its downstream end.

En outre, l'axe A2 de l'orifice de sortie 30 peut être décalé par rapport à l'axe A1 de la chambre tourbillonnaire 32, comme représenté sur la figure 2, ou confondu avec l'axe A1 de la chambre tourbillonnaire 32 pour former un axe A commun de la surface latérale du canal de sortie, laquelle surface latérale est formée conjointement par la surfaces latérales 30b, 32b de l'orifice de sortie 30 et de la chambre tourbillonnaire 32.In addition, the axis A2 of the outlet orifice 30 can be offset with respect to the axis A1 of the swirl chamber 32, as shown in FIG. figure 2 , or coincident with the axis A1 of the vortex chamber 32 to form a common axis A of the side surface of the outlet channel, which side surface is formed jointly by the side surfaces 30b, 32b of the outlet port 30 and the vortex chamber 32.

Pour amener le produit fluide sous pression dans la chambre tourbillonnaire 32 du canal de sortie, la buse de pulvérisation 28 comprend au moins un conduit d'amenée 36. Le conduit d'amenée 36 et la chambre tourbillonnaire 32 sont adaptés pour entraîner le produit fluide dans un mouvement de rotation autour de l'axe A1 de la chambre tourbillonnaire 32 selon un sens de rotation matérialisé sur les figures 2 et 3 par une flèche F.To bring the pressurized fluid into the swirl chamber 32 of the outlet channel, the spray nozzle 28 comprises at least one supply duct 36. The supply duct 36 and the swirl chamber 32 are adapted to drive the fluid product. in a rotational movement about the axis A1 of the vortex chamber 32 in a direction of rotation materialized on the Figures 2 and 3 by an arrow F.

Chaque conduit d'amenée 36 s'étend dans un plan perpendiculaire à l'axe A1 de la chambre tourbillonnaire 32 entre une extrémité amont et une extrémité aval. Chaque conduit d'amenée 36 s'étend tangentiellement par rapport à la surface latérale 32b de la chambre tourbillonnaire 32 et l'extrémité aval de chaque conduit d'amenée 36 débouche dans la surface latérale 32b de la chambre tourbillonnaire 32.Each supply duct 36 extends in a plane perpendicular to the axis A1 of the vortex chamber 32 between an upstream end and a downstream end. Each supply duct 36 extends tangentially with respect to the lateral surface 32b of the vortex chamber 32 and the downstream end of each supply duct 36 opens into the lateral surface 32b of the vortex chamber 32.

Chaque conduit d'amenée 36 peut être délimité par surface de fond 38 et des bords latéraux interne 39 et externe 40 sensiblement perpendiculaires à la surface de fond 38. On peut prévoir que les bords latéraux 39, 40 convergent l'un vers l'autre depuis l'extrémité amont vers l'extrémité aval du conduit d'amenée 36.Each supply duct 36 may be delimited by bottom surface 38 and internal lateral edges 39 and outer 40 substantially perpendicular to the bottom surface 38. It can be provided that the lateral edges 39, 40 converge towards each other from the upstream end to the downstream end of the feed duct 36.

En particulier, le bord latéral externe 40 peut être sensiblement rectiligne et se raccorder tangentiellement à la surface latérale 32b de la chambre tourbillonnaire 32. Et le bord latéral interne 39, également sensiblement rectiligne, peut se raccorder à la surface latérale 32b de la chambre tourbillonnaire 32 en étant incliné par rapport à une direction parallèle au bord latéral externe 40.In particular, the outer lateral edge 40 may be substantially rectilinear and connect tangentially to the lateral surface 32b of the swirl chamber 32. And the inner lateral edge 39, also substantially rectilinear, may be connected to the lateral surface 32b of the swirl chamber 32 being inclined with respect to a direction parallel to the outer lateral edge 40.

Dans le mode de réalisation représenté sur la figure 2, la paroi frontale 29 peut présenter, sur sa face amont 33, une surface frontale généralement plane et un bossage annulaire 37, par exemple venu de matière avec la paroi frontale 29, en saillie de la surface frontale de la paroi frontale 29. Le bossage annulaire 37 délimite intérieurement la chambre tourbillonnaire 32. Le bossage annulaire 37 délimite également extérieurement une chambre périphérique 35.In the embodiment shown on the figure 2 , the front wall 29 may have, on its upstream face 33, a generally flat front surface and an annular boss 37, for example integral with the front wall 29, projecting from the front surface of the front wall 29. The boss Annular 37 internally defines the vortex chamber 32. The annular boss 37 also delimits externally a peripheral chamber 35.

Le bossage 37 peut comprendre une gorge unique formée par une interruption du bossage 37 et délimitant l'unique conduit d'amenée 36. La surface de fond 38 du conduit d'amenée 36 peut être sensiblement coplanaire aux surfaces frontales de la chambre tourbillonnaire 32 et de la paroi frontale 29. L'extrémité aval du conduit d'amenée 36 débouche alors dans la surface latérale 32b de la chambre tourbillonnaire 32 et l'extrémité amont du conduit d'amenée 36 débouche dans la chambre périphérique 35.The boss 37 may comprise a single groove formed by an interruption of the boss 37 and delimiting the single supply duct 36. The bottom surface 38 of the supply duct 36 may be substantially coplanar with the front surfaces of the swirl chamber 32 and of the front wall 29. The downstream end of the supply duct 36 then opens into the lateral surface 32b of the vortex chamber 32 and the upstream end of the supply duct 36 opens into the peripheral chamber 35.

On peut toutefois prévoir que le bossage 37 comprenne plusieurs gorges délimitant chacune un conduit d'amenée 36.However, it can be provided that the boss 37 comprises a plurality of grooves each delimiting a supply duct 36.

En variante représentée sur la figure 3, la chambre tourbillonnaire 32 est ménagée en creux dans la paroi frontale 29 de sorte que les surfaces frontales de la chambre tourbillonnaire 32 et de la paroi frontale 29 sont décalées axialement l'une par rapport à l'autre.In a variant represented on the figure 3 the vortex chamber 32 is recessed in the end wall 29 so that the end surfaces of the vortex chamber 32 and the end wall 29 are axially offset relative to one another.

Dans cette variante, la buse de pulvérisation 28 peut comprendre un ou plusieurs conduits d'amenée 36, par exemple trois équirépartis, dont les extrémités aval débouchent dans la surface latérale 32b de la chambre tourbillonnaire 32. En particulier, les conduits d'amenés 36 peuvent être formés par des gorges ménagées en creux dans la paroi frontale 29. La surface de fond 38 de chaque conduit d'amenée 36 peut par exemple être disposées entre la surface frontale de la paroi frontale 29 et la surface frontale 32a de la chambre tourbillonnaire 32.In this variant, the spraying nozzle 28 may comprise one or more feed ducts 36, for example three equalized ducts, the downstream ends of which open into the lateral surface 32b of the vortex chamber 32. In particular, the supply ducts 36 may be formed by grooves formed in hollow in the end wall 29. The bottom surface 38 of each supply duct 36 may for example be arranged between the front surface of the front wall 29 and the front surface 32a of the chamber swirling 32.

Pour améliorer la circulation globale du produit fluide à l'intérieur du canal de sortie, en particulier dans la chambre tourbillonnaire 32 selon le mode de réalisation représenté, on prévoit que la surface latérale 32b de la chambre tourbillonnaire 32 comprenne un relief agencé radialement par rapport à l'axe A1 et adapté pour former une couche superficielle statique de produit fluide.To improve the overall circulation of the fluid product inside the outlet channel, in particular in the vortex chamber 32 according to the embodiment shown, it is expected that the lateral surface 32b of the vortex chamber 32 comprises a relief arranged radially relative to to the axis A1 and adapted to form a static surface layer of fluid product.

Le relief forme alors, sur la surface latérale 32b de la chambre tourbillonnaire 32, une singularité qui immobilise une couche superficielle, stable, de produit fluide. La circulation du produit fluide sur la surface latérale 32b forme une couche limite sur la surface latérale 32b qui est immobilisée par le relief pour revêtir la surface latérale 32b d'une couche de revêtement d'épaisseur déterminée sur laquelle le reste du produit fluide peut glisser sans frotter.The relief then forms, on the lateral surface 32b of the vortex chamber 32, a singularity which immobilizes a stable, surface layer of fluid product. The circulation of the fluid product on the lateral surface 32b forms a boundary layer on the lateral surface 32b which is immobilized by the relief to coat the lateral surface 32b with a coating layer of a predetermined thickness on which the remainder of the fluid can slide. without rubbing.

Sur les figures 2 et 3, le relief comprend une pluralité d'évidements 41 équirépartis ménagés sur la surface latérale 32b de la chambre tourbillonnaire 32. En particulier, chaque évidement 41 peut former une rampe s'écartant de l'axe A1 par rapport au sens de rotation F du produit fluide dans la chambre tourbillonnaire 32. On peut toutefois prévoir que le relief ne comprenne qu'un seul évidement.On the Figures 2 and 3 , the relief comprises a plurality of equidistributed recesses 41 formed on the lateral surface 32b of the swirl chamber 32. In particular, each recess 41 may form a ramp deviating from the axis A1 with respect to the direction of rotation F of the product fluid in the swirl chamber 32. However, it can be provided that the relief comprises only one recess.

Par ailleurs, le relief peut comprendre une ou plusieurs stries parallèles à l'axe A2. On peut également prévoir que le relief comprenne une pluralité d'aspérités formant une rugosité sur la surface latérale du canal de sortie, la rugosité pouvant être locale, répartie, continue ou discontinue.In addition, the relief may comprise one or more striations parallel to the axis A2. It can also be provided that the relief comprises a plurality of asperities forming a roughness on the lateral surface of the outlet channel, the roughness being local, distributed, continuous or discontinuous.

Dans un autre mode de réalisation non représenté, le canal de sortie peut ne comprendre qu'un seul tronçon formant l'orifice de sortie 30 qui s'étend entre une extrémité amont et une extrémité aval débouchant respectivement sur la face amont et la face aval de la paroi frontale 29. Chaque conduit d'amenée 36 s'étend alors tangentiellement à la surface latérale 30b de l'orifice de sortie 30 sur laquelle le relief est agencé. L'extrémité aval de chaque conduit d'amenée 36 débouche dans l'orifice de sortie 30 au voisinage de l'extrémité amont dudit orifice de sortie 30.In another embodiment not shown, the output channel may comprise only one section forming the outlet orifice 30 which extends between an upstream end and a downstream end respectively opening on the upstream face and the downstream face of the end wall 29. Each supply duct 36 then extends tangentially to the lateral surface 30b of the outlet port 30 on which the relief is arranged. The downstream end of each feed duct 36 opens into the outlet orifice 30 in the vicinity of the upstream end of said outlet orifice 30.

La buse de pulvérisation 28 peut constituer un élément rapporté qui est emmanché dans le logement 21 du bouton poussoir 17. La buse de pulvérisation 28 peut alors comprendre, du côté de la face amont 33 de la paroi frontale 29, une paroi d'association 31 qui s'étend au voisinage de la périphérie de la paroi frontale 29 sensiblement perpendiculairement à la paroi frontale 29.The spray nozzle 28 may constitute an insert which is fitted into the housing 21 of the push button 17. The spray nozzle 28 may then comprise, on the side of the upstream face 33 of the end wall 29, an associated wall 31 which extends in the vicinity of the periphery of the front wall 29 substantially perpendicular to the front wall 29.

La paroi d'association 31 de la buse de pulvérisation 28, éventuellement pourvue de bourrelets, est emmanchée à l'intérieur du logement 21 parallèlement à l'axe 22 du logement 21, jusqu'à ce que la paroi frontale 29 vienne en contact avec la surface de butée 27 du plot 23. Dans le mode de réalisation de la figure 2, le bossage 37 vient en contact avec la surface de butée 27 et, dans la variante de la figure 3, la surface frontale de la paroi frontale 29 vient en contact avec la surface de butée 27.The associated wall 31 of the spray nozzle 28, possibly provided with beads, is fitted inside the housing 21 parallel to the axis 22 of the housing 21, until the front wall 29 comes into contact with the abutment surface 27 of the stud 23. In the embodiment of the figure 2 , the boss 37 comes into contact with the abutment surface 27 and, in the variant of the figure 3 the front surface of the end wall 29 comes into contact with the abutment surface 27.

On peut toutefois prévoir, dans un autre mode de réalisation, que la buse de pulvérisation 28 soit venue de matière avec le corps de l'organe de distribution 17, la surface de butée 27 étant rapportée, par exemple par l'insertion d'un plot rapporté dans le logement 21. On évite ainsi les risques d'expulsion de la buse de pulvérisation 28 lors de la pulvérisation du produit fluide.However, it may be provided in another embodiment that the spray nozzle 28 is integral with the body of the dispensing member 17, the abutment surface 27 being attached, for example by the insertion of a inserted in the housing 21. This avoids the risk of expulsion of the spray nozzle 28 when spraying the fluid.

La chambre tourbillonnaire 32 alors constituée à l'interface entre la paroi frontale 29 et la surface de butée 27 est délimitée par la surface frontale 32a, la surface de butée 27 et la surface latérale 32b s'étendant entre la surface frontale 32a et la surface de butée 27. Le conduit d'amenée 36 est, quant à lui, délimité par la surface de fond 38, la surface de butée 27 et les bords latéraux 39, 40 qui s'étendent entre la surface de fond 38 et la surface de butée 27.The swirl chamber 32 then formed at the interface between the front wall 29 and the abutment surface 27 is delimited by the front surface 32a, the abutment surface 27 and the lateral surface 32b extending between the front surface 32a and the abutment surface 27. The supply duct 36 is delimited by the bottom surface 38, the abutment surface 27 and the lateral edges 39, 40 which extend between the bottom surface 38 and abutment surface 27.

Par ailleurs, l'extrémité amont de chaque conduit d'amenée 36 est mis en communication, soit par l'intermédiaire de la chambre périphérique 35 dans le mode de réalisation de la figure 2 soit directement dans la variante de la figure 3, avec l'espace annulaire 24 et le passage radial 26 du canal d'alimentation.Moreover, the upstream end of each supply duct 36 is placed in communication, either via the peripheral chamber 35 in the embodiment of the figure 2 either directly in the variant of the figure 3 , with the annular space 24 and the radial passage 26 of the supply channel.

Lorsqu'un utilisateur appuie sur la paroi supérieure d'actionnement 19 du bouton poussoir 17, le gicleur 10 déplacé vers le bas délivre le produit fluide sous pression vers le manchon axial 25 et le passage radial 26 du canal d'alimentation jusque dans l'espace annulaire 24 du logement 21.When a user presses on the upper actuating wall 19 of the push button 17, the nozzle 10 moved downwards delivers the fluid under pressure to the axial sleeve 25 and the radial passage 26 of the feed channel into the annular space 24 of the housing 21.

L'extrémité amont du conduit d'amenée 36 est alimentée en produit fluide sous pression, lequel produit fluide est ensuite amené tangentiellement dans la chambre tourbillonnaire 32, ou directement dans l'orifice de sortie 30, par ledit conduit d'amenée 36. Le produit fluide peut être animé d'un mouvement de rotation dans l'orifice de sortie 30 et sortir du distributeur 1 sous la forme de l'aérosol 2 composé de fines gouttelettes individuelles et de forme généralement conique avec l'angle de pulvérisation α souhaité, par exemple inférieur ou égal à 80°.The upstream end of the supply duct 36 is fed with fluid under pressure, which fluid product is then brought tangentially into the vortex chamber 32, or directly into the outlet orifice 30, via said supply duct 36. fluid product can be rotated in the outlet orifice 30 and out of the distributor 1 in the form of the aerosol 2 composed of individual small droplets and of generally conical shape with the desired spray angle α, for example less than or equal to 80 °.

L'utilisation de la buse de pulvérisation 28 selon les modes de réalisations décrits ci-dessus permet d'obtenir l'aérosol 2 souhaité du début à la fin de l'actionnement du distributeur et tout au long de la durée d'utilisation du distributeur 1.The use of the spray nozzle 28 according to the embodiments described above makes it possible to obtain the desired aerosol 2 from the beginning to the end of the actuation of the dispenser and throughout the duration of use of the dispenser. 1.

La buse de pulvérisation 28 telle que décrite ci-dessus peut être utilisée pour la pulvérisation de tout type de produit fluide, par exemple un produit fluide visqueux, présentant une viscosité supérieure à 0,001 Pa.s à 20°C. On prévoit, par ailleurs, que la buse de pulvérisation 28 puisse être utilisée pour pulvériser un produit fluide qui présente une viscosité inférieure ou égale à 10 Pa.s à 20°C.The spray nozzle 28 as described above can be used for spraying any type of fluid, for example a viscous fluid product having a viscosity greater than 0.001 Pa.s at 20 ° C. It is expected, moreover, that the nozzle of spraying 28 can be used to spray a fluid that has a viscosity of less than or equal to 10 Pa.s at 20 ° C.

Le produit fluide disposé à l'intérieur du réservoir 3 peut donc présenter une viscosité dans la plage prévue ci-dessus.The fluid product disposed within the tank 3 may therefore have a viscosity in the range provided above.

Claims (9)

  1. Spray nozzle (28) for a fluid product comprising:
    - a front wall (29),
    - an outlet channel (30, 32) extending through said front wall (29), said outlet channel being delimited by a lateral surface (30b, 32b) substantially of revolution about an axis (A, A1, A2) perpendicular to the front wall (29), the lateral surface (30b, 32b) of the outlet channel (30, 32) comprising at least one relief (41) arranged radially in relation to the axis (A, A1, A2),
    - an intake conduit (36) suitable for feeding the fluid product into the outlet channel (30, 32), the inlet conduit (36) and the outlet channel (30, 32) being suitable for entraining the fluid product in a rotation movement about the axis (A, A1, A2) in a direction of rotation (F), said intake conduit (36) extending in a plane perpendicular to the axis (A, A1, A2), substantially tangentially to the lateral surface (30b, 32b) of the outlet channel (30, 32), between an upstream end suitable for being fed with fluid product and a downstream end opening into the lateral surface (30b, 32b) of the outlet channel (30, 32),
    said spray nozzle (28) being characterised in that the relief comprises at least one recess (41) arranged on the lateral surface (30b, 32b) of the outlet channel (30, 32), said lateral surface consisting of a surface that is generated by the movement of a rectilinear or curved generatrix, parallel to the axis (A, A1, A2), along a closed circular or elliptic directrix, and that presents locally a slope departing from the axis (A, A1, A2) in the direction of rotation (F) of the fluid product in the outlet channel (30, 32) and forming the recess, said recess being suitable for forming a static surface layer of fluid product.
  2. Spray nozzle (28) according to claim 1, wherein the outlet channel comprises an upstream section forming a swirl chamber (32) and having a first cross section, and a downstream section forming an outlet orifice (30) and having a second cross section of smaller dimensions than those of the first cross section, the downstream end of the intake conduit (36) opening into the lateral surface (32b) of the swirl chamber (32), the relief (41) being arranged on the lateral surface (32b) of the swirl chamber (32).
  3. Spray nozzle (28) according to claim 1, wherein the outlet channel comprises a section forming an outlet orifice (30) which extends between an upstream end and a downstream end, the downstream end of the intake conduit (36) opening into the lateral surface (30b) of the outlet orifice (30) in the vicinity of the upstream end of said outlet orifice (30), the relief (41) being arranged on the lateral surface (30b) of the outlet orifice (30).
  4. Spray nozzle (28) according to any of claims 1 to 3, wherein the relief comprises a plurality of asperities forming a roughness on the lateral surface (30b, 32b) of the outlet channel (30, 32).
  5. Spray nozzle according to any of the preceding claims, comprising several intake conduits (36).
  6. Dispensing element (17) comprising a generally cylindrical body and a spray nozzle (28) according to any one of claims 1 to 5, the body comprising a housing (21) having an abutment surface (27), and a supply channel (25, 26) suitable for feeding the housing (21) with fluid product, the spray nozzle (28) being arranged in the housing (21), the front wall (29) delimiting the housing (21) outwards and coming into contact with the abutment surface (27), the upstream end of the intake conduit (36) being in communication with the supply channel (25, 26).
  7. Dispenser (1) comprising:
    - a reservoir (3) having a opening (5) and suitable for containing a fluid product,
    - a dispensing device (7) mounted in the opening (5) and comprising a stem (10) that can be moved in translation, communicating with the reservoir (3) and suitable for delivering the fluid product under pressure,
    - a dispensing element (17) according to claim 6, mounted on the stem (10) for moving said stem (10), the supply channel (25, 26) being in communication with the stem (10).
  8. Dispenser (1) according to claim 7, in which the reservoir (3) contains a fluid product having a viscosity less than or equal to 10 Pa.s at 20°C.
  9. Use of a spray nozzle (28) according to any one of claims 1 to 5 to spray a fluid product which has a viscosity less than or equal to 10 Pa.s at 20°C.
EP07123074A 2006-12-15 2007-12-12 Spraying nozzle, dispensing element comprising such a nozzle, dispenser comprising such an element and use of such a nozzle Expired - Fee Related EP1932595B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0610944A FR2909908B1 (en) 2006-12-15 2006-12-15 SPRAY NOZZLE, DISPENSING MEMBER COMPRISING SUCH A NOZZLE, DISPENSER COMPRISING SUCH AN ORGAN AND USE OF SUCH A NOZZLE.

Publications (2)

Publication Number Publication Date
EP1932595A1 EP1932595A1 (en) 2008-06-18
EP1932595B1 true EP1932595B1 (en) 2010-04-14

Family

ID=38198381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07123074A Expired - Fee Related EP1932595B1 (en) 2006-12-15 2007-12-12 Spraying nozzle, dispensing element comprising such a nozzle, dispenser comprising such an element and use of such a nozzle

Country Status (5)

Country Link
US (1) US8418940B2 (en)
EP (1) EP1932595B1 (en)
DE (1) DE602007005909D1 (en)
ES (1) ES2341042T3 (en)
FR (1) FR2909908B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101022601B1 (en) * 2010-08-19 2011-03-16 정해룡 Nozzle for dispenser
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071196A (en) * 1975-08-28 1978-01-31 Vca Corporation Aerosol valve tip and insert assembly
US4358057A (en) * 1980-05-27 1982-11-09 Ethyl Products Company Fluid dispenser method and apparatus
US5738282A (en) * 1996-03-20 1998-04-14 Calmar Inc. Pump sprayer nozzle for producing a solid spray pattern
MXPA00000068A (en) * 1997-07-04 2002-09-18 Univ Southampton Improved targeting of flying insects with insecticides and apparatus for charging liquids.
FR2772644B1 (en) * 1997-12-24 2000-02-04 D Investissement Ind Et Commer SPRAY NOZZLE WITH STATIC MEANS OF FLOW INHIBITION
FR2835203B1 (en) * 2002-01-25 2004-04-09 Verbena Corp N V SPRAY NOZZLE WITH REDUCED DIAMETER
US6793156B2 (en) * 2002-02-28 2004-09-21 Saint-Gobain Calmar Inc. Orifice cup for manually actuated sprayer
US7198201B2 (en) * 2002-09-09 2007-04-03 Bete Fog Nozzle, Inc. Swirl nozzle and method of making same

Also Published As

Publication number Publication date
US8418940B2 (en) 2013-04-16
FR2909908B1 (en) 2009-02-27
US20080164346A1 (en) 2008-07-10
ES2341042T3 (en) 2010-06-14
DE602007005909D1 (en) 2010-05-27
EP1932595A1 (en) 2008-06-18
FR2909908A1 (en) 2008-06-20

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