EP1100622A1 - Dispensing head and fluid product dispensing device comprising same - Google Patents

Dispensing head and fluid product dispensing device comprising same

Info

Publication number
EP1100622A1
EP1100622A1 EP99934792A EP99934792A EP1100622A1 EP 1100622 A1 EP1100622 A1 EP 1100622A1 EP 99934792 A EP99934792 A EP 99934792A EP 99934792 A EP99934792 A EP 99934792A EP 1100622 A1 EP1100622 A1 EP 1100622A1
Authority
EP
European Patent Office
Prior art keywords
dispensing
channel
insert
expulsion channel
dispensing head
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.)
Granted
Application number
EP99934792A
Other languages
German (de)
French (fr)
Other versions
EP1100622B1 (en
Inventor
Laurent Arghyris
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.)
Aptar France SAS
Original Assignee
Valois 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 Valois SAS filed Critical Valois SAS
Publication of EP1100622A1 publication Critical patent/EP1100622A1/en
Application granted granted Critical
Publication of EP1100622B1 publication Critical patent/EP1100622B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05B1/3442—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet

Definitions

  • the present invention relates to an improved dispensing head and a fluid dispensing device incorporating such a dispensing head.
  • a push-button for a sprayer in which a cylindrical insert of constant section is inserted in the expulsion channel.
  • the end face of the insert which is perpendicular to the axis of said insert, cooperates with the bottom of the expulsion channel to define a spray profile comprising a swirl chamber and one or more swirl channels connecting the channel of expulsion to said swirl chamber.
  • said spray profile is formed in the bottom wall of said expulsion channel, while the end face of one insert is planar.
  • the present invention aims to provide a dispensing head and a fluid dispensing device incorporating such a dispensing head which do not reproduce the aforementioned drawbacks.
  • the present invention therefore aims to provide a dispensing head comprising a spray profile and operating in a safe and reliable manner, even with a hemispherical dispensing head end.
  • the present invention also aims to provide a dispensing head comprising a spray profile, in which the risks of clogging of said spray profile are reduced.
  • the present invention also aims to provide a dispensing head comprising a spray profile which can be easily molded without quality problem at the end of the head, and which allows the use of materials further reducing the risk of clogging.
  • the present invention therefore relates to a device for dispensing a fluid product, comprising an expulsion channel ending in a dispensing orifice, an insert being disposed in said expulsion channel, the downstream end of said insert, in the direction product flow, defining with the downstream end portion of said expulsion channel a spray profile, said downstream end of said insert and said downstream end portion of said expulsion channel being respectively frustoconical, forming a spray profile tapered.
  • said spray profile includes at least one swirl channel and a swirling, said swirl chamber being directly connected to said dispensing orifice.
  • said at least one swirl channel connects the expulsion channel to said swirl chamber, the channel or channels being formed on the conical part of the frustoconical spray profile and said swirl chamber being formed on the top of the . truncated cone of the frustoconical spray profile.
  • said frustoconical spray profile is formed by grooves made in the walls of the expulsion channel, said insert forming the bottom of said grooves.
  • said insert fills substantially the entire volume of the expulsion channel to define a narrow expulsion channel.
  • the end of said head incorporating said dispensing orifice is hemispherical.
  • the present invention also relates to a device for dispensing a fluid product comprising a dispensing head as defined above.
  • FIG. 1 is a schematic cross-sectional view of a dispensing head according to a preferred embodiment of the present invention
  • FIG. 2 is an enlarged detail view of the dispensing head of FIG. 1.
  • the present invention which mainly relates to a particular implementation of a spraying profile in a dispensing head of a fluid dispenser device, is adaptable to all fluid dispenser devices comprising a such spray profile.
  • a particularly advantageous application of the present invention relates to nasal delivery devices, and the present invention will therefore be described with reference to a nasal plunger. It should however be clear that the present invention is not limited to this example of application.
  • the dispensing head 10 incorporates an expulsion channel 11 which extends in said head 10 between an upstream part intended to connect to the dispensing member, for example a pump, of the dispensing device on which said head will be applied, and a downstream end incorporating a dispensing orifice 12.
  • an insert 20, also called an internal nozzle is placed at inside said expulsion channel, and preferably extends substantially over the whole of said expulsion channel 11.
  • said insert 20 fills substantially the entire volume of expulsion channel 11, leaving only one narrow passage as an expulsion channel.
  • the downstream end of the insert 20 in the direction of flow of the product, defines with the downstream end part of the expulsion channel 11 (or bottom part of the expulsion channel) a spray profile, which further promotes distribution in finely sprayed form.
  • This spray profile can be any, but it generally comprises one or more swirl channels which connect the expulsion channel to a swirl chamber arranged just upstream of the dispensing orifice.
  • said downstream end 21 of the insert 20 and said downstream end portion of the expulsion channel 11 are respectively of frustoconical shape, thus forming a frustoconical spray profile.
  • this frustoconical spray profile has one or more swirl channels 14 and a swirl chamber 13, said swirl chamber 13 being directly connected to said dispensing orifice 12
  • the swirl channel (s) 14 connect the expulsion channel 11 to the swirl chamber 13, but unlike the device of the prior art, said spray profile 13 and 14 is not produced in a plane transverse to the longitudinal axis of the pusher.
  • the swirl channel (s) 14 are advantageously formed on the conical part of the frustoconical spray profile while said swirl chamber 13 is advantageously formed on the top of the frustum of said frustoconical spray profile.
  • this implementation makes it possible to increase the length of said swirl channels 14, even when the end of the head 10 is produced in a hemispherical manner, which can be the case with a nasal plunger.
  • the presence of the frustoconical spray profile of the invention makes it possible to avoid any quality problem during the molding of the end of the head, which therefore facilitates the manufacture of that -this.
  • the frustoconical swirl profile of the invention that is to say the swirl channel or channels 14 and the swirl chamber 13, is formed inside the frustoconical bottom wall of the expulsion channel 11, while the insert 20 has a smooth outer surface. After its installation inside the expulsion channel, said insert 20 then forms the bottom of said grooves of the swirl profile.
  • This implementation prevents any risk of deterioration of the swirl profile during assembly of the insert. inside the expulsion channel.
  • the present invention therefore makes it possible to provide a dispensing head comprising a spraying profile, particularly suitable for pushers of the nasal type, and which has the following advantages: - the pushbutton can be produced with a hemispherical end, which favors the use both in adults and children, with no problem of molding quality at the end of the head;
  • the insert can be made of a material, such as prolypopylene or acetal, which makes it possible to further reduce the risk of clogging of the pusher.
  • the dispensing head of the invention in particular as described above with reference to the figures, naturally adapts to any type of device for dispensing an appropriate fluid.

Landscapes

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

Abstract

The invention concerns a dispensing head (10) for a fluid product dispensing device, said head (10) comprising a discharge pipe (11) ending in a dispensing orifice (12), an insert (20) being provided in said discharge pipe (11), the downstream end (21) of said insert (20), in the product flow direction, defining with said discharge pipe (11) downstream end part a spraying profile (13, 14). The invention is characterised in that said downstream end (21) of said insert (20) and said downstream part of said discharge pipe (11) are respectively tapered, forming a tapered spraying profile (13, 14).

Description

TETE DE DISTRIBUTION ET DISPOSITIF DE DISTRIBUTION DE PRODUIT FLUIDE COMPORTANT UNE TELLE TETE. DISPENSING HEAD AND DEVICE FOR DISPENSING A FLUID PRODUCT COMPRISING SUCH A HEAD.
La présente invention concerne une tête de distribution améliorée et un dispositif de distribution de produit fluide incorporant une telle tête de distribution.The present invention relates to an improved dispensing head and a fluid dispensing device incorporating such a dispensing head.
Il est connu pour certains types de dispositifs de distribution de produit fluide, avec lesquels on souhaite distribuer le produit sous la forme d'une fine pulvérisation, de former en amont de l'orifice de distribution un profil de pulvérisation, comportant généralement une chambre de tourbillonnement alimentée par un ou plusieurs canaux de tourbillonnement. Ces types de dispositif de pulvérisation sont aujourd'hui largement utilisés dans un grand nombre de domaines, et notamment dans la pharmacie, la parfumerie et la cosmétique.It is known for certain types of fluid product distribution devices, with which it is desired to distribute the product in the form of a fine spray, to form a spray profile upstream of the dispensing orifice, generally comprising a vortex powered by one or more vortex channels. These types of spraying device are today widely used in a large number of fields, and in particular in pharmacy, perfumery and cosmetics.
Dans le document EP-0 131 501, il est divulgué un poussoir pour pulvérisateur, dans lequel un insert cylindrique de section constante est inséré dans le canal d'expulsion. La face d'extrémité de l' insert, qui est perpendiculaire à l'axe dudit insert, coopère avec le fond du canal d'expulsion pour définir un profil de pulvérisation comportant une chambre de tourbillonnement et un ou plusieurs canaux de tourbillonnement reliant le canal d'expulsion à ladite chambre de tourbillonnement. Dans la mise oeuvre divulguée dans le document EP-0-131-501, ledit profil de pulvérisation est ménagé dans la paroi de fond dudit canal d'expulsion, alors que la face d'extrémité de 1 ' insert est plane.In document EP-0 131 501, a push-button for a sprayer is disclosed, in which a cylindrical insert of constant section is inserted in the expulsion channel. The end face of the insert, which is perpendicular to the axis of said insert, cooperates with the bottom of the expulsion channel to define a spray profile comprising a swirl chamber and one or more swirl channels connecting the channel of expulsion to said swirl chamber. In the implementation disclosed in document EP-0-131-501, said spray profile is formed in the bottom wall of said expulsion channel, while the end face of one insert is planar.
Ce type de dispositif peut toutefois présenter dans certains cas des inconvénients. Ainsi, notamment dans le cas d'un poussoir nasal, l peut être souhaitable de réaliser ledit poussoir avec une extrémité hémisphérique. Ceci peut poser un problème lors du moulage, notamment lorsque le volume de la chambre de tourbillonnement est faible. En effet, la combinaison d'une extrémité hémisphérique avec un profil de pulvérisation horizontal transversal à l'axe longitudinal de la tête peut poser des problèmes notamment au niveau de l'épaisseur de la paroi de l'extrémité de la tête. Une solution est alors de diminuer la dimension transversale du canal d'expulsion et de l' insert, et donc la dimension du profil de pulvérisation. Ceci engendre toutefois une augmentation du risque de bouchage du poussoir au niveau dudit profil de pulvérisation.This type of device can however have drawbacks in certain cases. Thus, in particular in the case of a nasal plunger, it may be desirable to produce said plunger with a hemispherical end. This can be a problem during molding, especially when the volume of the swirl chamber is small. Indeed, the combination of a hemispherical end with a horizontal spray profile transverse to the longitudinal axis of the head can cause problems, in particular with regard to the thickness of the wall of the end of the head. One solution is then to reduce the transverse dimension of the expulsion channel and the insert, and therefore the dimension of the spray profile. This however generates an increase in the risk of blockage of the pusher at said spray profile.
La présente invention a pour but de fournir une tête de distribution et un dispositif de distribution de produit fluide incorporant une telle tête de distribution qui ne reproduisent pas les inconvénients précités. La présente invention a donc pour but de fournir une tête de distribution comportant un profil de pulvérisation et fonctionnant de manière sûre et fiable, même avec une extrémité de tête de distribution hémisphérique.The present invention aims to provide a dispensing head and a fluid dispensing device incorporating such a dispensing head which do not reproduce the aforementioned drawbacks. The present invention therefore aims to provide a dispensing head comprising a spray profile and operating in a safe and reliable manner, even with a hemispherical dispensing head end.
La présente invention a aussi pour but de fournir une tête de distribution comportant un profil de pulvérisation, dans lequel les risques de bouchage dudit profil de pulvérisation sont diminués.The present invention also aims to provide a dispensing head comprising a spray profile, in which the risks of clogging of said spray profile are reduced.
La présente invention a encore pour but de fournir une tête de distribution comportant un profil de pulvérisation qui peut être facilement moulé sans problème de qualité à l'extrémité de la tête, et qui permet l'utilisation de matériaux réduisant encore le risque de bouchage.The present invention also aims to provide a dispensing head comprising a spray profile which can be easily molded without quality problem at the end of the head, and which allows the use of materials further reducing the risk of clogging.
La présente invention a donc pour objet un dispositif de distribution de produit fluide, comportant un canal d'expulsion se terminant par un orifice de distribution , un insert étant disposé dans ledit canal d'expulsion, l'extrémité aval dudit insert, dans le sens d'écoulement du produit, définissant avec la partie d'extrémité aval dudit canal d'expulsion un profil de pulvérisation, ladite extrémité aval dudit insert et ladite partie d'extrémité aval dudit canal d'expulsion étant respectivement tronconiques , formant un profil de pulvérisation tronconique .The present invention therefore relates to a device for dispensing a fluid product, comprising an expulsion channel ending in a dispensing orifice, an insert being disposed in said expulsion channel, the downstream end of said insert, in the direction product flow, defining with the downstream end portion of said expulsion channel a spray profile, said downstream end of said insert and said downstream end portion of said expulsion channel being respectively frustoconical, forming a spray profile tapered.
De préférence, ledit profil de pulvérisation comporte au moins un canal de tourbillonnement et une chambre de tourbillonnement, ladite chambre de tourbillonnement étant directement reliée audit orifice de distribution.Preferably, said spray profile includes at least one swirl channel and a swirling, said swirl chamber being directly connected to said dispensing orifice.
Avantageusement, ledit au moins canal de tourbillonnement relie le canal d'expulsion à ladite chambre de tourbillonnement, le ou les canaux étant formé (s) sur la partie conique du profil de pulvérisation tronconique et ladite chambre de tourbillonnement étant formée sur le sommet du. tronc de cône du profil de pulvérisation tronconique . Avantageusement, ledit profil de pulvérisation tronconique est formé par des rainures ménagées dans les parois du canal d'expulsion, ledit insert formant le fond desdites rainures.Advantageously, said at least one swirl channel connects the expulsion channel to said swirl chamber, the channel or channels being formed on the conical part of the frustoconical spray profile and said swirl chamber being formed on the top of the . truncated cone of the frustoconical spray profile. Advantageously, said frustoconical spray profile is formed by grooves made in the walls of the expulsion channel, said insert forming the bottom of said grooves.
De préférence, ledit insert remplit sensiblement la totalité du volume du canal d'expulsion pour définir un canal d'expulsion étroit.Preferably, said insert fills substantially the entire volume of the expulsion channel to define a narrow expulsion channel.
Avantageusement, l'extrémité de ladite tête incorporant ledit orifice de distribution est hémisphérique.Advantageously, the end of said head incorporating said dispensing orifice is hemispherical.
La présente invention a également pour objet un dispositif de distribution de produit fluide comportant une tête de distribution telle que définit ci-dessus.The present invention also relates to a device for dispensing a fluid product comprising a dispensing head as defined above.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement dans la description détaillée suivante d'un mode de réalisation préféré de l'invention, donné à titre d'exemple non limitatif, en regard des dessins joints, sur lesquels : la figure 1 est une vue schématique en section transversale d'une tête de distribution selon un mode de réalisation préféré de la présente invention, - la figure 2 est une vue de détail agrandie de la tête de distribution de la figure 1.Other characteristics and advantages of the invention will appear more clearly in the following detailed description of a preferred embodiment of the invention, given by way of nonlimiting example, with reference to the accompanying drawings, in which: 1 is a schematic cross-sectional view of a dispensing head according to a preferred embodiment of the present invention, FIG. 2 is an enlarged detail view of the dispensing head of FIG. 1.
La présente invention, qui concerne principalement une mise en oeuvre particulière d'un profil de pulvérisation dans une tête de distribution d'un dispositif de distribution de produit fluide, est adaptable à tous les dispositifs de distribution de produit fluide comportant un tel profil de pulvérisation. Toutefois, une application particulièrement avantageuse de la présente invention concerne les dispositifs de distribution nasale, et la présente invention sera donc décrite en référence à un poussoir nasal. Il doit toutefois être clair que la présente invention ne se limite pas à cet exemple d'application.The present invention, which mainly relates to a particular implementation of a spraying profile in a dispensing head of a fluid dispenser device, is adaptable to all fluid dispenser devices comprising a such spray profile. However, a particularly advantageous application of the present invention relates to nasal delivery devices, and the present invention will therefore be described with reference to a nasal plunger. It should however be clear that the present invention is not limited to this example of application.
En référence aux figures, la tête de distribution 10 incorpore un canal d'expulsion 11 qui s'étend dans ladite tête 10 entre une partie amont destinée à se connecter à l'organe de distribution, par exemple une pompe, du dispositif de distribution sur lequel ladite tête sera appliquée, et une extrémité aval incorporant un orifice de distribution 12. Pour limiter le volume mort dans le canal d'expulsion 11 et pour permettre une distribution sous forme pulvérisée, un insert 20, aussi appelé gicleur interne, est placé à l'intérieur dudit canal d'expulsion, et s'étend de préférence sensiblement sur la totalité dudit canal d'expulsion 11. De préférence, ledit insert 20 remplit sensiblement la totalité du volume du canal d'expulsion 11, ne laissant qu'un passage étroit en tant que canal d' expulsion.With reference to the figures, the dispensing head 10 incorporates an expulsion channel 11 which extends in said head 10 between an upstream part intended to connect to the dispensing member, for example a pump, of the dispensing device on which said head will be applied, and a downstream end incorporating a dispensing orifice 12. To limit the dead volume in the expulsion channel 11 and to allow dispensing in spray form, an insert 20, also called an internal nozzle, is placed at inside said expulsion channel, and preferably extends substantially over the whole of said expulsion channel 11. Preferably, said insert 20 fills substantially the entire volume of expulsion channel 11, leaving only one narrow passage as an expulsion channel.
De manière connue, tel que par exemple décrit dans le document EP-0 131 501, l'extrémité aval de 1 ' insert 20, dans le sens d'écoulement du produit, définit avec la partie d'extrémité aval du canal d'expulsion 11 (ou partie de fond du canal d'expulsion) un profil de pulvérisation, qui favorise encore davantage une distribution sous forme finement pulvérisée. Ce profil de pulvérisation peut être quelconque, mais il comporte généralement un ou plusieurs canaux de tourbillonnement qui relient le canal d'expulsion à une chambre de tourbillonnement disposée juste en amont de l'orifice de distribution.In known manner, as for example described in document EP-0 131 501, the downstream end of the insert 20, in the direction of flow of the product, defines with the downstream end part of the expulsion channel 11 (or bottom part of the expulsion channel) a spray profile, which further promotes distribution in finely sprayed form. This spray profile can be any, but it generally comprises one or more swirl channels which connect the expulsion channel to a swirl chamber arranged just upstream of the dispensing orifice.
Selon l'invention, ladite extrémité aval 21 de l' insert 20 et ladite partie d'extrémité aval du canal d'expulsion 11 sont respectivement de forme tronconique, formant ainsi un profil de pulvérisation tronconique. De préférence comme représenté sur la figure 2, ce profil de pulvérisation tronconique comporte un ou plusieurs canaux de tourbillonnement 14 et une chambre de tourbillonnement 13, ladite chambre de tourbillonnement 13 étant directement reliée audit orifice de distribution 12 De manière classique, le ou les canaux de tourbillonnement 14 relient le canal d'expulsion 11 à la chambre de tourbillonnement 13, mais contrairement au dispositif de l'art antérieur, ledit profil de pulvérisation 13 et 14 n'est pas réalisé dans un plan transversal à l'axe longitudinal du poussoir. En effet, le ou les canaux de tourbillonnement 14 sont avantageusement formés sur la partie conique du profil de pulvérisation tronconique alors que ladite chambre de tourbillonnement 13 est avantageusement formée sur le sommet du tronc de cône dudit profil de pulvérisation tronconique. Selon les règles élémentaires de la géométrie, cette mise en oeuvre permet d'augmenter la longueur desdits canaux de tourbillonnement 14, même lorsque l'extrémité de la tête 10 est réalisée de manière hémisphérique, ce qui peut être le cas avec un poussoir nasal. D'autre part, comme visible sur la figure 2, la présence du profil de pulvérisation tronconique de l'invention permet d'éviter tout problème de qualité lors du moulage de l'extrémité de la tête, ce qui facilite donc la fabrication de celle-ci. Avantageusement, le profil de tourbillonnement tronconique de l'invention, c'est à dire le ou les canaux de tourbillonnement 14 et la chambre de tourbillonnement 13, est formé à l'intérieur de la paroi de fond tronconique du canal d'expulsion 11, alors que 1 ' insert 20 a une surface extérieure lisse. Après sa mise en place à l'intérieur du canal d'expulsion, ledit insert 20 forme alors le fond desdites rainures du profil de tourbillonnement Cette mise en oeuvre empêche tout risque de détérioration du profil de tourbillonnement lors de l'assemblage de l' insert à l'intérieur du canal d'expulsion. La présente invention permet donc de fournir une tête de distribution comportant un profil de pulvérisation, particulièrement adaptée à des poussoirs de type nasal, et qui présente les avantages suivants : - le poussoir peut être réalisé avec une extrémité hémisphérique, ce qui favorise l'utilisation à la fois chez l'adulte et l'enfant, sans problème de qualité de moulage au niveau de l'extrémité de la tête ;According to the invention, said downstream end 21 of the insert 20 and said downstream end portion of the expulsion channel 11 are respectively of frustoconical shape, thus forming a frustoconical spray profile. Preferably as shown in Figure 2, this frustoconical spray profile has one or more swirl channels 14 and a swirl chamber 13, said swirl chamber 13 being directly connected to said dispensing orifice 12 Conventionally, the swirl channel (s) 14 connect the expulsion channel 11 to the swirl chamber 13, but unlike the device of the prior art, said spray profile 13 and 14 is not produced in a plane transverse to the longitudinal axis of the pusher. Indeed, the swirl channel (s) 14 are advantageously formed on the conical part of the frustoconical spray profile while said swirl chamber 13 is advantageously formed on the top of the frustum of said frustoconical spray profile. According to the elementary rules of geometry, this implementation makes it possible to increase the length of said swirl channels 14, even when the end of the head 10 is produced in a hemispherical manner, which can be the case with a nasal plunger. On the other hand, as visible in FIG. 2, the presence of the frustoconical spray profile of the invention makes it possible to avoid any quality problem during the molding of the end of the head, which therefore facilitates the manufacture of that -this. Advantageously, the frustoconical swirl profile of the invention, that is to say the swirl channel or channels 14 and the swirl chamber 13, is formed inside the frustoconical bottom wall of the expulsion channel 11, while the insert 20 has a smooth outer surface. After its installation inside the expulsion channel, said insert 20 then forms the bottom of said grooves of the swirl profile. This implementation prevents any risk of deterioration of the swirl profile during assembly of the insert. inside the expulsion channel. The present invention therefore makes it possible to provide a dispensing head comprising a spraying profile, particularly suitable for pushers of the nasal type, and which has the following advantages: - the pushbutton can be produced with a hemispherical end, which favors the use both in adults and children, with no problem of molding quality at the end of the head;
- la surface de contact entre l' insert et le profil de pulvérisation est augmentée du fait de la portée conique, ce qui diminue le risque de bouchage à ce niveau ;- the contact surface between the insert and the spray profile is increased due to the conical bearing, which reduces the risk of clogging at this level;
- l' insert peut être réalisé en un matériau, tel que du prolypopylène ou de l'acétal, qui permet de réduire encore davantage le risque de bouchage du poussoir. La tête de distribution de l'invention, notamment telle que décrite ci-dessus en référence aux figures, s'adapte bien entendu à tout type de dispositif de distribution de produit fluide approprié.- The insert can be made of a material, such as prolypopylene or acetal, which makes it possible to further reduce the risk of clogging of the pusher. The dispensing head of the invention, in particular as described above with reference to the figures, naturally adapts to any type of device for dispensing an appropriate fluid.
Bien que la présente invention ait été décrite en référence à un mode de réalisation préféré de celle-ci, elle ne se limite pas à cette mise en oeuvre particulière et est au contraire adaptable à tous les types de dispositif de distribution de produit fluide sans sortir du cadre de la présente invention, telle que définie par les revendications annexées. Although the present invention has been described with reference to a preferred embodiment thereof, it is not limited to this particular implementation and is on the contrary adaptable to all types of device for dispensing a fluid product without leaving of the scope of the present invention, as defined by the appended claims.

Claims

Revendications : Claims:
1.- Tête de distribution (10) pour un dispositif de distribution de produit fluide, ladite tête (10) comportant un canal d'expulsion (11) se terminant par un orifice de distribution (12), un insert (20) étant disposé dans ledit canal d'expulsion (11), l'extrémité aval (21) dudit insert1.- dispensing head (10) for a device for dispensing a fluid product, said head (10) comprising an expulsion channel (11) ending in a dispensing orifice (12), an insert (20) being arranged in said expulsion channel (11), the downstream end (21) of said insert
(20), dans le sens d'écoulement du produit, définissant avec la partie d'extrémité aval dudit canal d'expulsion (11) un profil de pulvérisation (13, 14), caractérisée en ce que ladite extrémité aval (21) dudit insert (20) et ladite partie d'extrémité aval dudit canal d'expulsion (11) sont respectivement tronconiques , formant un profil de pulvérisation (13, 14) tronconique.(20), in the product flow direction, defining with the downstream end part of said expulsion channel (11) a spray profile (13, 14), characterized in that said downstream end (21) of said insert (20) and said downstream end portion of said expulsion channel (11) are respectively frustoconical, forming a spray profile (13, 14) frustoconical.
2.- Tête de distribution selon la revendication 1, dans laquelle ledit profil de pulvérisation comporte au moins un canal de tourbillonnement (14) et une chambre de tourbillonnement (13), ladite chambre de tourbillonnement (13) étant directement reliée audit orifice de distribution (12) .2. A dispensing head according to claim 1, in which said spraying profile comprises at least one swirl channel (14) and a swirl chamber (13), said swirl chamber (13) being directly connected to said dispensing orifice. (12).
3.- Tête de distribution selon la revendication 2, dans laquelle ledit au moins un canal de tourbillonnement (14) relie le canal d'expulsion (11) à ladite chambre de tourbillonnement (13), le ou les canaux (14) étant formé(s) sur la partie conique du profil de pulvérisation tronconique et ladite chambre de tourbillonnement (13) étant formée sur le sommet du tronc de cône du profil de pulvérisation tronconique .3. A dispensing head according to claim 2, in which said at least one swirl channel (14) connects the expulsion channel (11) to said swirl chamber (13), the channel or channels (14) being formed. (S) on the conical part of the frustoconical spray profile and said swirl chamber (13) being formed on the top of the truncated cone of the frustoconical spray profile.
4.- Tête de distribution selon l'une quelconque des revendications précédentes, dans laquelle ledit profil de pulvérisation tronconique (13, 14) est formé par des rainures ménagées dans les parois du canal d'expulsion (11), ledit insert (20) formant le fond desdites rainures.4. Dispensing head according to any one of the preceding claims, in which said frustoconical spray profile (13, 14) is formed by grooves made in the walls of the expulsion channel (11), said insert (20) forming the bottom of said grooves.
5.- Tête de distribution selon l'une quelconque des revendications précédentes, dans laquelle ledit insert (20) remplit sensiblement la totalité du volume du canal d'expulsion (11) pour définir un canal d'expulsion (11) étroit .5. Dispensing head according to any one of the preceding claims, in which said insert (20) fills substantially the entire volume of the channel. expulsion channel (11) to define a narrow expulsion channel (11).
6.- Tête de distribution selon l'une quelconque des revendications précédentes, dans laquelle l'extrémité de ladite tête (10) incorporant ledit orifice de distribution (12) est hémisphérique.6. Dispensing head according to any one of the preceding claims, in which the end of said head (10) incorporating said dispensing orifice (12) is hemispherical.
7.- Dispositif de distribution de produit fluide comportant une tête de distribution (10) selon l'une quelconque des revendications précédentes. 7. A fluid dispenser device comprising a dispensing head (10) according to any one of the preceding claims.
EP99934792A 1998-08-04 1999-07-28 Nasal dispensing head and fluid product dispensing device comprising same Expired - Lifetime EP1100622B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9809984A FR2782024B1 (en) 1998-08-04 1998-08-04 DISPENSING HEAD AND DEVICE FOR DISPENSING A FLUID PRODUCT COMPRISING SUCH A HEAD
FR9809984 1998-08-04
PCT/FR1999/001857 WO2000007736A1 (en) 1998-08-04 1999-07-28 Dispensing head and fluid product dispensing device comprising same

Publications (2)

Publication Number Publication Date
EP1100622A1 true EP1100622A1 (en) 2001-05-23
EP1100622B1 EP1100622B1 (en) 2004-01-02

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Application Number Title Priority Date Filing Date
EP99934792A Expired - Lifetime EP1100622B1 (en) 1998-08-04 1999-07-28 Nasal dispensing head and fluid product dispensing device comprising same

Country Status (7)

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US (1) US6585172B2 (en)
EP (1) EP1100622B1 (en)
JP (1) JP4319783B2 (en)
CN (1) CN1106884C (en)
DE (1) DE69913971T2 (en)
FR (1) FR2782024B1 (en)
WO (1) WO2000007736A1 (en)

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Also Published As

Publication number Publication date
EP1100622B1 (en) 2004-01-02
CN1316925A (en) 2001-10-10
JP2002522206A (en) 2002-07-23
FR2782024A1 (en) 2000-02-11
CN1106884C (en) 2003-04-30
FR2782024B1 (en) 2000-10-13
US20020134863A1 (en) 2002-09-26
DE69913971T2 (en) 2004-10-28
WO2000007736A1 (en) 2000-02-17
DE69913971D1 (en) 2004-02-05
JP4319783B2 (en) 2009-08-26
US6585172B2 (en) 2003-07-01

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