EP2353726A1 - Push button for a system for pressurised product distribution - Google Patents

Push button for a system for pressurised product distribution Download PDF

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Publication number
EP2353726A1
EP2353726A1 EP11290041A EP11290041A EP2353726A1 EP 2353726 A1 EP2353726 A1 EP 2353726A1 EP 11290041 A EP11290041 A EP 11290041A EP 11290041 A EP11290041 A EP 11290041A EP 2353726 A1 EP2353726 A1 EP 2353726A1
Authority
EP
European Patent Office
Prior art keywords
push button
button according
chamber
product
vortex
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
EP11290041A
Other languages
German (de)
French (fr)
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EP2353726B1 (en
Inventor
Jean-Pierre Songbe
Hervé IMENEZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Le Treport SAS
Original Assignee
Rexam Dispensing Systems SAS
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Publication date
Application filed by Rexam Dispensing Systems SAS filed Critical Rexam Dispensing Systems SAS
Publication of EP2353726A1 publication Critical patent/EP2353726A1/en
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Publication of EP2353726B1 publication Critical patent/EP2353726B1/en
Not-in-force legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B05B1/3415—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 swirl imparting inserts upstream of the swirl chamber
    • 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
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

  • the invention relates to a push button for a dispensing system of a product under pressure, as well as such a dispensing system.
  • the dispensing system is intended to equip bottles used in perfumery, in cosmetics or for pharmaceutical treatments.
  • this type of bottle contains a liquid product which is returned by a dispensing system comprising a device for sampling under pressure of said product, said system being actuated by a push button to allow the product to be sprayed.
  • the sampling device comprises a pump or a manually operated valve via the push button.
  • Such push buttons are conventionally made in two parts: an actuating body and a spray nozzle of the product which are associated with each other to form a swirl assembly comprising a vortex chamber provided with a dispensing orifice and at least one supply channel of said chamber.
  • the feed channels can lead tangentially into the vortex chamber which is cylindrical of revolution to rotate the product very quickly, the dispensing orifice having a reduced diameter relative to that of said chamber so that the rotating product escapes through said orifice with a speed sufficient to split into droplets forming the aerosol.
  • the aerosol is composed of droplets of very different sizes.
  • the aerosol is commonly constituted by droplets of diameter between 5 ⁇ m and 300 ⁇ m.
  • the large droplets are heavier than the smaller ones and follow a different distribution path, which can cause indelible stains in the case of perfumes.
  • small droplets are the lightest and can be inhaled, which may be the goal in the case of drugs, but this can be an undesirable effect in the case of toxic products.
  • the place of application for example within the respiratory system, depends on the size of the droplets, and the large disparity in size distorts the treatment.
  • the size of the droplets from a vortex chamber depends in part on the force and speed with which the user actuates the pump pressing the push button with his finger, because the induced pressure depends on it.
  • the aerosol tends to be hollow with a substantially conical envelope which consists of the majority of droplets while there is little inside the cone.
  • this distribution of droplets can be harmful for dermal applications.
  • a push button comprising a distribution chamber which is provided with channels each converging towards an outlet orifice, said convergent channels being arranged to allow the impingement of the jets of product distributed by said orifices.
  • the quality of the aerosol is substantially independent of the force or speed of support on the push button.
  • the supply of the convergent ducts or of the vortex chamber according to the prior art does not make it possible to interrupt the return of the dose of product to be dispensed, that is to say to voluntarily restore only a part the dose provided by the pump.
  • the aerosol is produced too short, in particular of the order of 0.2 seconds for 130 ⁇ l, to be interrupted by the user.
  • the aim of the invention is to solve the problems of the prior art by proposing in particular a push button enabling the distribution of an aerosol formed of droplets having improved calibration and spatial distribution, and this in a particularly reliable manner with respect to the constraints of industrial manufacture. in large series.
  • the invention proposes a push button for a system for dispensing a product under pressure, said push button comprising a body having a mounting well on a tube for feeding the product under pressure. and a housing in communication with said well, said housing being provided with an anvil around which a spray nozzle is mounted to form a product distribution path between said housing and a vortex assembly comprising a swirling impaction chamber provided with a dispensing orifice and at least two supply channels of said chamber, said swirling impaction chamber being delimited by a lateral surface which extends along a distribution axis from one end upstream in which opens the downstream end of the supply channels to a downstream supply opening of the dispensing orifice, the supply channels extending transversely to said distribution axis being delimited laterally each between a wall an inner wall and an outer wall, said inner walls extending in a direction normal to the upstream end and said outer walls extending in a direction which forms a strictly positive angle ⁇ with a direction
  • the invention proposes a system for dispensing a product under pressure, comprising a sampling device equipped with a tube for feeding the pressurized product on which the well of such a push button is mounted to allow spraying of the product.
  • a push button for a dispensing system for a product in particular liquid under pressure, is described below, said product being of any kind, in particular used in perfumery, in cosmetics or for pharmaceutical treatments.
  • the push button comprises a body 1 having an annular skirt 2 surrounding a well 3 for mounting the push button on a feed tube 4 of the pressurized product. Furthermore, the push button comprises an upper zone 5 allowing the user to exert a digital support on said push button in order to move it axially. In the embodiment shown, the push button is equipped with a decorative embellisher 6 which surrounds the body 1 and on which is formed the upper support zone 5.
  • the dispensing system comprises a sampling device 7 equipped with a tube 4 for supplying the pressurized product which is sealingly inserted into the well 3.
  • the dispensing system further comprises mounting means 8 on a bottle 9 containing the product and means 10 for taking the product inside said bottle which are arranged to supply the feed tube 4 with pressurized product.
  • the sampling device 7 may comprise a manually operated pump or, in the case where the product is packaged under pressure in the bottle 9, a manually operated valve.
  • the pump or the valve is actuated to supply the supply tube 4 with pressure product.
  • the body 1 also has an annular housing 11 which is in communication with the well 3.
  • the housing 11 is of axis perpendicular to that of the mounting well 3 to allow lateral spraying of the product relative to the body 1 of the push button.
  • the housing 11 may be collinear with the well 3, in particular for a push button forming nasal spraying nozzle.
  • the housing 11 is provided with an anvil 12 around which a spray nozzle 13 is mounted so as to form a distribution path of the product under pressure between said housing and a vortex assembly.
  • the anvil 12 extends from the bottom of the housing 11 leaving a channel 14 for communication between the well 3 and said housing.
  • the nozzle 13 has a cylindrical side wall 15 of revolution which is closed forwardly by a proximal wall 16.
  • the association of the nozzle 13 in the housing 11 is formed by fitting the outer face of the side wall 15, the rear edge of said outer face being further provided with a radial projection 17 for anchoring the nozzle 13 in said housing.
  • an impression of the vortex assembly is formed recess in the proximal wall 16 and the anvil 12 has a distal wall 18 forming a flat surface on which the proximal wall 16 of the nozzle 13 is supported to delimit the swirling assembly between said walls.
  • an impression of the swirl assembly can be formed directly on a wall of the housing 11, in particular for a spray nozzle.
  • the nozzle 13 and the body 1 are made by molding, in particular of a different thermoplastic material.
  • the material forming the nozzle 13 has a stiffness that is greater than the stiffness of the material forming the body 1.
  • the significant stiffness of the nozzle 13 prevents its deformation during its mounting in the housing 11 so to guarantee the geometry of the whirlpool assembly.
  • the lower stiffness of the body 1 allows improved sealing between the mounting well 3 and the feed tube 4.
  • the body 1 is made of polyolefin and the nozzle 13 is made of cycloolefinic copolymer (COC), poly (oxymethylene) or poly (butylene terephthalate).
  • the distribution path feeds the vortex assembly into pressurized product which comprises a vortex impaction chamber 24 provided with a dispensing orifice 25 and at least two supply channels 26 of said chamber. More precisely, in the embodiment shown, the supply channels 26 communicate with the downstream annular duct 23. In particular, this embodiment makes it possible to limit the length of the supply channels 26 in order to reduce the induced pressure drops.
  • the vortex impaction chamber 24 is delimited by a lateral surface 27 which extends along a distribution axis D from an upstream end 28 into which the downstream end of the supply channels 26 opens to a downstream feed aperture 29 of the dispensing orifice 25.
  • a lateral surface 27 which extends along a distribution axis D from an upstream end 28 into which the downstream end of the supply channels 26 opens to a downstream feed aperture 29 of the dispensing orifice 25.
  • the lateral surface 27 of the swirling impaction chamber has a geometry of revolution about the distribution axis D, an internal dimension of said geometry then corresponding to a diameter. More precisely, the geometry represented is cylindrical but, as a variant, not shown, the geometry could be frustoconical of revolution with a convergence oriented towards the downstream opening 29. other variant not shown, the geometry of the side wall 27 may be of polygonal section, an internal dimension of said geometry then corresponding to a diameter of the envelope inscribed in said geometry.
  • the supply channels 26 and therefore the jets of product which feed the vortex impaction chamber 24 extend transversely with respect to the distribution axis D, that is to say in a plane perpendicular to said distribution axis . Furthermore, each of the supply channels 26 is delimited laterally between an inner wall 30 and an outer wall 31.
  • the supply channels 26 have a U-shaped section, the branches of said U extending along the distribution axis D.
  • the free ends of the U rest on the flat surface of the distal wall 18, said scope extending transversely to close the supply channels 26 in this direction.
  • V-section channels 26 may be provided for supplying the vortex impaction chamber 24.
  • the inner walls 30 extend in a direction I normal to the upstream end 28 and the outer walls 31 extend in a direction which forms a strictly positive angle ⁇ with a direction E normal to the upstream end 28.
  • the normal directions I, E correspond to a diameter of the cylindrical revolution in which the upstream end 28 is formed.
  • the transverse product streams that come from each of the channels 26 are impinged in the upstream opening 28 to form the aerosol.
  • This embodiment of the impaction in the swirling impaction chamber 24 makes it possible in particular to avoid the problems of projection of parasitic jets for lack of convergence. It is then possible to provide reduced section supply channels 26, by increasing the speed of the jets, to eliminate the continuous jet phenomenon at the end of the dose.
  • the angle ⁇ of the outer wall 31 induces a rotational component of the aerosol in the swirling impaction chamber 24 to promote its ejection through the dispensing orifice 25.
  • a component of Optimum rotation of the aerosol in the swirling impaction chamber 24 is obtained with an angle ⁇ of between 10 ° and 20 °, in particular equal to 15 °.
  • the closure of the swirl assembly being carried out by pressing the nozzle 13 of hard material on a flat surface of the anvil 12 of softer material, a dispersion of the crushing force does not induce any significant modification. in the channel section 26 creep feed material.
  • the geometry of the anvil 12 is then standard and the implementation of the invention can only require the change of the nozzle 13.
  • the distal wall 18 of the anvil 12 may have a bending which is centered in the upstream end 28 of the vortex impaction chamber 24.
  • the transverse jets delivered by the channels 26 may be slightly raised on the bending before their impaction so as to promote the ejection of the aerosol through the dispensing orifice 25.
  • the push button according to the invention allows in particular the realization of an aerosol formed of a uniform spatial distribution of droplets suspended in the air, the size of said droplets being small and uniform.
  • the aerosol may have droplets whose average size is 40 microns for a dispersion of 20 microns, and whatever the strength of support that the user exerts on the push button.
  • the dispensing orifice 25 has an outlet dimension which is equal to the internal dimension of the downstream opening 29.
  • the downstream opening 29 of the swirling impaction chamber 24 forms the dispensing orifice 25.
  • the proximal wall 16 has a diverging frustoconical housing 32 into which the dispensing orifice 25 opens.
  • the downstream opening 29 of the swirling impaction chamber 24 may be surmounted by a dispensing orifice 25, in particular a cylindrical orifice in the case of a frustoconical swirl impaction chamber.
  • the swirl assembly has two channels 26 for supplying the vortex impaction chamber 24 which are arranged facing each other with respect to the distribution axis D to achieve a frontal impaction of the jets of product in the vicinity of said axis. More specifically, the inner walls 30 extend in the same normal direction I and the outer walls 31 extend in a direction which forms an angle ⁇ with the same normal direction E.
  • three channels 26 may be provided to feed the swirling impaction chamber 24, for example by being arranged symmetrically with respect to the distribution axis D to allow an impaction of the three jets in the vicinity of said axis.
  • each of the supply channels 26 forms a supply section of the swirling impaction chamber 24. To increase the impaction speed of the product jets, it is possible to provide that this supply section is low, especially relative to the inner surface of the upstream end 28.
  • the surface of the feed section may be between 0.01 mm 2 and 0.03 mm 2 .
  • the internal dimension of the upstream end 28 is between 0.35 mm and 0.45 mm. mm, in particular being equal to 0.4 mm, and each of the two channels 26 has, in particular in its downstream end, a width and a depth of 0.1 mm, ie an area of 0.02 mm 2 for the section d 'food.
  • the dispensing time is increased.
  • the distribution time may be of the order of 1 second so as to allow the user to interrupt the distribution of the aerosol during actuation.
  • the axial dimension of the vortex impaction chamber 24 is relatively small, in particular less than the internal dimension of the upstream end 28.
  • the axial dimension of the vortex impaction chamber 24 is between 0.20 mm and 0, 30 mm.

Abstract

The button has a housing that is provided with an anvil around which a spraying nozzle (13) that is mounted so as to from a product distribution path between the housing and a swirl array. A swirl impaction chamber is delimited by a lateral surface (27). A supply channel (26) is extended transversally with respect to a distribution axis, where the channel is delimited laterally between an interior wall and an exterior wall. The exterior wall is extended along a direction which forms a positive angle with a direction normal to an upstream end. An independent claim is also included for a pressurized product dispensing system comprising a push button.

Description

L'invention concerne un bouton poussoir pour un système de distribution d'un produit sous pression, ainsi qu'un tel système de distribution.The invention relates to a push button for a dispensing system of a product under pressure, as well as such a dispensing system.

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

De tels boutons poussoirs sont classiquement réalisés en deux parties : un corps d'actionnement et une buse de pulvérisation du produit qui sont associés entre eux pour former un ensemble tourbillonnaire comprenant une chambre tourbillonnaire pourvue d'un orifice de distribution ainsi qu'au moins un canal d'alimentation de ladite chambre.Such push buttons are conventionally made in two parts: an actuating body and a spray nozzle of the product which are associated with each other to form a swirl assembly comprising a vortex chamber provided with a dispensing orifice and at least one supply channel of said chamber.

En particulier, les canaux d'alimentation peuvent déboucher tangentiellement dans la chambre tourbillonnaire qui est cylindrique de révolution pour faire tourner très rapidement le produit, l'orifice de distribution présentant un diamètre réduit par rapport à celui de ladite chambre afin que le produit en rotation s'échappe par ledit orifice avec une vitesse suffisante pour se fractionner en gouttelettes formant l'aérosol.In particular, the feed channels can lead tangentially into the vortex chamber which is cylindrical of revolution to rotate the product very quickly, the dispensing orifice having a reduced diameter relative to that of said chamber so that the rotating product escapes through said orifice with a speed sufficient to split into droplets forming the aerosol.

Toutefois, ce fractionnement se faisant de façon non maîtrisée, l'aérosol se trouve constitué de gouttelettes de tailles très variées. Par exemple, pour une pompe ou une valve alimentant un bouton poussoir avec un flot d'alcool sous une pression de 5 bars, et un orifice de sortie de 0,3 mm, l'aérosol se trouve couramment constitué de gouttelettes de diamètre compris entre 5 µm et 300 µm.However, this fractionation being uncontrolled, the aerosol is composed of droplets of very different sizes. For example, for a pump or a valve supplying a push button with a flow of alcohol at a pressure of 5 bars, and an outlet orifice of 0.3 mm, the aerosol is commonly constituted by droplets of diameter between 5 μm and 300 μm.

Or, les grosses gouttelettes sont plus lourdes que les plus petites et suivent une trajectoire de distribution différente, pouvant provoquer des taches indélébiles dans le cas des parfums. Aussi, les petites gouttelettes sont les plus légères et peuvent être inhalées, ce qui peut être l'objectif recherché dans le cas de médicaments, mais ce qui peut être un effet indésirable dans le cas de produits toxiques. En outre, dans le cas des médicaments qui doivent être dispensés selon une posologie précise, le lieu d'application, par exemple à l'intérieur du système respiratoire, dépend de la taille des gouttelettes, et la grande disparité de tailles fausse le traitement.However, the large droplets are heavier than the smaller ones and follow a different distribution path, which can cause indelible stains in the case of perfumes. Also, small droplets are the lightest and can be inhaled, which may be the goal in the case of drugs, but this can be an undesirable effect in the case of toxic products. In addition, in the case of drugs that must be dispensed at a specific dosage, the place of application, for example within the respiratory system, depends on the size of the droplets, and the large disparity in size distorts the treatment.

Par ailleurs, la taille des gouttelettes issues d'une chambre tourbillonnaire dépend en partie de la force et de la vitesse avec laquelle l'utilisateur actionne la pompe en appuyant sur le bouton poussoir avec son doigt, car la pression induite en dépend.Furthermore, the size of the droplets from a vortex chamber depends in part on the force and speed with which the user actuates the pump pressing the push button with his finger, because the induced pressure depends on it.

En outre, notamment à cause des effets de la force centrifuge en sortie de la chambre tourbillonnaire, l'aérosol a tendance à être creux avec une enveloppe sensiblement conique qui est constituée de la majorité des gouttelettes alors qu'il y en a peu à l'intérieur du cône. En particulier, cette répartition des gouttelettes peut être dommageable pour les applications dermiques.In addition, especially because of the effects of the centrifugal force at the outlet of the vortex chamber, the aerosol tends to be hollow with a substantially conical envelope which consists of the majority of droplets while there is little inside the cone. In particular, this distribution of droplets can be harmful for dermal applications.

On connaît par ailleurs, notamment du document FR-2 915 470 , un bouton poussoir comprenant une chambre de distribution qui est pourvue de canaux convergeant chacun vers un orifice de sortie, lesdits canaux convergents étant agencés pour permettre l'impaction des jets de produit distribués par lesdits orifices. Ainsi, lors de l'impaction des jets distribués à grande vitesse, il se forme un aérosol sans avoir recours à une chambre tourbillonnaire.It is also known, in particular from the document FR-2 915 470 , a push button comprising a distribution chamber which is provided with channels each converging towards an outlet orifice, said convergent channels being arranged to allow the impingement of the jets of product distributed by said orifices. Thus, during impaction jets distributed at high speed, it forms an aerosol without using a swirl chamber.

Cette réalisation permet notamment une meilleur maîtrise de la taille moyenne des gouttelettes et une faible dispersion de leur taille. En outre, la qualité de l'aérosol est sensiblement indépendante de la force ou de la vitesse d'appui sur le bouton poussoir.This achievement allows in particular a better control of the average size of the droplets and a small dispersion of their size. In addition, the quality of the aerosol is substantially independent of the force or speed of support on the push button.

Toutefois, pour réaliser un tel aérosol en contrôlant de façon satisfaisante la calibration et la répartition spatiale des gouttelettes, il est nécessaire de former des jets identiques, très fins et dont la convergence est parfaite, ce qui est très difficilement réalisable industriellement à l'interface entre le corps d'actionnement et la buse montée dans ledit corps. Il en résulte que les jets peuvent se croiser sans s'impacter ou en ne s'impactant que partiellement, ce qui dégrade la calibration et la répartition spatiale des gouttelettes formées, notamment en projetant des jets parasites de produit.However, to achieve such an aerosol by satisfactorily controlling the calibration and spatial distribution of the droplets, it is necessary to form identical jets, very thin and whose convergence is perfect, which is very difficult to achieve industrially at the interface between the actuating body and the nozzle mounted in said body. As a result, the jets can cross without impact or only partially impacting, which degrades the calibration and the spatial distribution of the formed droplets, in particular by projecting jets of product.

En outre, lorsque la pression chute en fin de dose, l'énergie d'impaction n'est plus suffisante pour former l'aérosol et il en résulte donc la production d'un jet continu de produit.In addition, when the pressure drops at the end of the dose, the impaction energy is no longer sufficient to form the aerosol and therefore results in the production of a continuous stream of product.

Par ailleurs, l'alimentation des conduits convergents ou de la chambre tourbillonnaire selon l'art antérieur ne permet pas d'interrompre la restitution de la dose de produit à distribuer, c'est-à-dire de ne restituer volontairement qu'une partie de la dose prévue par la pompe. En effet, l'aérosol est réalisé de façon trop brève, notamment de l'ordre de 0,2 seconde pour 130 µl, pour pouvoir être interrompu par l'utilisateur.Moreover, the supply of the convergent ducts or of the vortex chamber according to the prior art does not make it possible to interrupt the return of the dose of product to be dispensed, that is to say to voluntarily restore only a part the dose provided by the pump. Indeed, the aerosol is produced too short, in particular of the order of 0.2 seconds for 130 μl, to be interrupted by the user.

L'invention vise à résoudre les problèmes de l'art antérieur en proposant notamment un bouton poussoir permettant la distribution d'un aérosol formé de gouttelettes présentant une calibration et une répartition spatiale améliorées, et ce de façon particulièrement fiable relativement aux contraintes de fabrication industrielle en grande série.The aim of the invention is to solve the problems of the prior art by proposing in particular a push button enabling the distribution of an aerosol formed of droplets having improved calibration and spatial distribution, and this in a particularly reliable manner with respect to the constraints of industrial manufacture. in large series.

A cet effet, et selon un premier aspect, l'invention propose un bouton poussoir pour un système de distribution d'un produit sous pression, ledit bouton poussoir comprenant un corps présentant un puits de montage sur un tube d'amenée du produit sous pression et un logement en communication avec ledit puits, ledit logement étant pourvu d'une enclume autour de laquelle une buse de pulvérisation est montée de sorte à former un chemin de distribution du produit entre ledit logement et un ensemble tourbillonnaire comprenant une chambre d'impaction tourbillonnaire pourvue d'un orifice de distribution ainsi qu'au moins deux canaux d'alimentation de ladite chambre, ladite chambre d'impaction tourbillonnaire étant délimitée par une surface latérale qui s'étend suivant un axe de distribution depuis une extrémité amont dans laquelle débouche l'extrémité aval des canaux d'alimentation vers une ouverture aval d'alimentation de l'orifice de distribution, les canaux d'alimentation s'étendant transversalement par rapport audit axe de distribution en étant délimités latéralement chacun entre une paroi intérieure et une paroi extérieure, lesdites parois intérieures s'étendant suivant une direction normale à l'extrémité amont et lesdites parois extérieures s'étendant suivant une direction qui forme un angle α strictement positif avec une direction normale à l'extrémité amont.For this purpose, and according to a first aspect, the invention proposes a push button for a system for dispensing a product under pressure, said push button comprising a body having a mounting well on a tube for feeding the product under pressure. and a housing in communication with said well, said housing being provided with an anvil around which a spray nozzle is mounted to form a product distribution path between said housing and a vortex assembly comprising a swirling impaction chamber provided with a dispensing orifice and at least two supply channels of said chamber, said swirling impaction chamber being delimited by a lateral surface which extends along a distribution axis from one end upstream in which opens the downstream end of the supply channels to a downstream supply opening of the dispensing orifice, the supply channels extending transversely to said distribution axis being delimited laterally each between a wall an inner wall and an outer wall, said inner walls extending in a direction normal to the upstream end and said outer walls extending in a direction which forms a strictly positive angle α with a direction normal to the upstream end.

Selon un deuxième aspect, l'invention propose un système de distribution d'un produit sous pression, comprenant un dispositif de prélèvement équipé d'un tube d'amenée du produit sous pression sur lequel le puits d'un tel bouton poussoir est monté pour permettre la pulvérisation du produit.According to a second aspect, the invention proposes a system for dispensing a product under pressure, comprising a sampling device equipped with a tube for feeding the pressurized product on which the well of such a push button is mounted to allow spraying of the product.

D'autres objets et avantages de l'invention apparaîtront dans la description qui suit, faite en référence aux figures annexées dans lesquelles :

  • la figure 1 est une vue partielle en coupe longitudinale d'un flacon équipé d'un système de distribution selon un mode de réalisation de l'invention ;
  • la figure 2 est une vue partielle en coupe longitudinale du bouton poussoir de la figure 1 ;
  • les figures 3 sont des vues de la buse du bouton poussoir selon la figure 2, respectivement en perspective écorchée (figure 3a) et de la partie interne (figure 3b).
Other objects and advantages of the invention will appear in the description which follows, made with reference to the appended figures in which:
  • the figure 1 is a partial view in longitudinal section of a bottle equipped with a dispensing system according to one embodiment of the invention;
  • the figure 2 is a partial view in longitudinal section of the push button of the figure 1 ;
  • the figures 3 are views of the push button nozzle according to the figure 2 , respectively in broken perspective ( figure 3a ) and the inner part ( figure 3b ).

En relation avec les figures, on décrit ci-dessous un bouton poussoir pour un système de distribution d'un produit notamment liquide sous pression, ledit produit pouvant être de toute nature, notamment utilisé en parfumerie, en cosmétique ou pour des traitements pharmaceutiques.In relation to the figures, a push button for a dispensing system for a product, in particular liquid under pressure, is described below, said product being of any kind, in particular used in perfumery, in cosmetics or for pharmaceutical treatments.

Le bouton poussoir comprend un corps 1 présentant une jupe annulaire 2 qui entoure un puits 3 de montage du bouton poussoir sur un tube d'amenée 4 du produit sous pression. Par ailleurs, le bouton poussoir comprend une zone supérieure 5 permettant à l'utilisateur d'exercer un appui digital sur ledit bouton poussoir afin de pouvoir le déplacer axialement. Dans le mode de réalisation représenté, le bouton poussoir est équipé d'un enjoliveur 6 d'aspect qui entoure le corps 1 et sur lequel est formée la zone supérieure 5 d'appui.The push button comprises a body 1 having an annular skirt 2 surrounding a well 3 for mounting the push button on a feed tube 4 of the pressurized product. Furthermore, the push button comprises an upper zone 5 allowing the user to exert a digital support on said push button in order to move it axially. In the embodiment shown, the push button is equipped with a decorative embellisher 6 which surrounds the body 1 and on which is formed the upper support zone 5.

En relation avec la figure 1, le système de distribution comprend un dispositif de prélèvement 7 équipé d'un tube 4 d'amenée du produit sous pression qui est inséré de façon étanche dans le puits 3. De façon connue, le système de distribution comprend par ailleurs des moyens de montage 8 sur un flacon 9 contenant le produit et des moyens de prélèvement 10 du produit à l'intérieur dudit flacon qui sont agencés pour alimenter le tube d'amenée 4 en produit sous pression.In relation to the figure 1 , the dispensing system comprises a sampling device 7 equipped with a tube 4 for supplying the pressurized product which is sealingly inserted into the well 3. In a known manner, the dispensing system further comprises mounting means 8 on a bottle 9 containing the product and means 10 for taking the product inside said bottle which are arranged to supply the feed tube 4 with pressurized product.

Le dispositif de prélèvement 7 peut comprendre une pompe à actionnement manuel ou, dans le cas où le produit est conditionné sous pression dans le flacon 9, une valve à actionnement manuel. Ainsi, lors d'un déplacement manuel du bouton poussoir, la pompe ou la valve est actionnée pour alimenter le tube d'amenée 4 en produit sous pression.The sampling device 7 may comprise a manually operated pump or, in the case where the product is packaged under pressure in the bottle 9, a manually operated valve. Thus, during a manual movement of the push button, the pump or the valve is actuated to supply the supply tube 4 with pressure product.

Le corps 1 présente également un logement annulaire 11 qui est en communication avec le puits 3. Dans le mode de réalisation représenté, le logement 11 est d'axe perpendiculaire à celui du puits de montage 3 pour permettre une pulvérisation latérale du produit relativement au corps 1 du bouton poussoir. En variante non représentée, le logement 11 peut être colinéaire au puits 3, notamment pour un bouton poussoir formant embout nasal de pulvérisation.The body 1 also has an annular housing 11 which is in communication with the well 3. In the embodiment shown, the housing 11 is of axis perpendicular to that of the mounting well 3 to allow lateral spraying of the product relative to the body 1 of the push button. In a variant not shown, the housing 11 may be collinear with the well 3, in particular for a push button forming nasal spraying nozzle.

Le logement 11 est pourvu d'une enclume 12 autour de laquelle une buse 13 de pulvérisation est montée de sorte à former un chemin de distribution du produit sous pression entre ledit logement et un ensemble tourbillonnaire. Pour ce faire, l'enclume 12 s'étend depuis le fond du logement 11 en laissant un canal 14 de communication entre le puits 3 et ledit logement.The housing 11 is provided with an anvil 12 around which a spray nozzle 13 is mounted so as to form a distribution path of the product under pressure between said housing and a vortex assembly. To do this, the anvil 12 extends from the bottom of the housing 11 leaving a channel 14 for communication between the well 3 and said housing.

Dans le mode de réalisation représenté, la buse 13 présente une paroi latérale 15 cylindrique de révolution qui est fermée vers l'avant par une paroi proximale 16. L'association de la buse 13 dans le logement 11 est réalisée par emmanchement de la face externe de la paroi latérale 15, le bord arrière de ladite face externe étant en outre pourvu d'une saillie radiale 17 d'ancrage de la buse 13 dans ledit logement.In the embodiment shown, the nozzle 13 has a cylindrical side wall 15 of revolution which is closed forwardly by a proximal wall 16. The association of the nozzle 13 in the housing 11 is formed by fitting the outer face of the side wall 15, the rear edge of said outer face being further provided with a radial projection 17 for anchoring the nozzle 13 in said housing.

Par ailleurs, une empreinte de l'ensemble tourbillonnaire est formée en creux dans la paroi proximale 16 et l'enclume 12 présente une paroi distale 18 formant une portée plane sur laquelle la paroi proximale 16 de la buse 13 est en appui pour délimiter l'ensemble tourbillonnaire entre lesdites parois. En variante non représentée, une empreinte de l'ensemble tourbillonnaire peut être formée directement sur une paroi du logement 11, notamment pour un embout nasal de pulvérisation.Furthermore, an impression of the vortex assembly is formed recess in the proximal wall 16 and the anvil 12 has a distal wall 18 forming a flat surface on which the proximal wall 16 of the nozzle 13 is supported to delimit the swirling assembly between said walls. In a variant not shown, an impression of the swirl assembly can be formed directly on a wall of the housing 11, in particular for a spray nozzle.

De façon avantageuse, la buse 13 et le corps 1 sont réalisés par moulage, notamment d'un matériau thermoplastique différent. En outre, le matériau formant la buse 13 présente une rigidité qui est supérieure à la rigidité du matériau formant le corps 1. Ainsi, la raideur importante de la buse 13 permet d'éviter sa déformation lors de son montage dans le logement 11 de sorte à garantir la géométrie de l'ensemble tourbillonnaire. En outre, la raideur moins importante du corps 1 permet une étanchéité améliorée entre le puits 3 de montage et le tube d'amenée 4.Advantageously, the nozzle 13 and the body 1 are made by molding, in particular of a different thermoplastic material. In addition, the material forming the nozzle 13 has a stiffness that is greater than the stiffness of the material forming the body 1. Thus, the significant stiffness of the nozzle 13 prevents its deformation during its mounting in the housing 11 so to guarantee the geometry of the whirlpool assembly. In addition, the lower stiffness of the body 1 allows improved sealing between the mounting well 3 and the feed tube 4.

Dans un exemple de réalisation, le corps 1 est réalisé en polyoléfine et la buse 13 est réalisée en copolymère cyclo oléfinique (COC), en poly(oxyméthylène) ou en poly(butylène téréphtalate).In an exemplary embodiment, the body 1 is made of polyolefin and the nozzle 13 is made of cycloolefinic copolymer (COC), poly (oxymethylene) or poly (butylene terephthalate).

Dans le mode de réalisation représenté, le chemin de distribution présente successivement en communication d'amont en aval :

  • un conduit annulaire amont 19 en communication avec le canal 14, ledit conduit annulaire étant formé entre la partie arrière de la face interne de la paroi latérale 15 de la buse 13 et la partie de la face externe de la paroi latérale de l'enclume 12 qui est disposée en regard ;
  • quatre conduits axiaux 20 formés entre quatre entretoises 21 qui s'étendent sur la face interne de la paroi latérale 15 de la buse 13, lesdites entretoises présentant une paroi libre 22 qui est emmanchée sur la face externe de la paroi latérale de l'enclume 12 ;
  • un conduit annulaire aval 23 formé entre la paroi proximale 16 de la buse 13 et la paroi distale 18 de l'enclume 12.
In the embodiment shown, the distribution path has successively in communication from upstream to downstream:
  • an upstream annular duct 19 in communication with the channel 14, said annular duct being formed between the rear part of the internal face of the side wall 15 of the nozzle 13 and the part of the external face of the side wall of the anvil 12 which is arranged opposite;
  • four axial ducts 20 formed between four spacers 21 which extend on the inner face of the side wall 15 of the nozzle 13, said spacers having a free wall 22 which is fitted on the outer face of the side wall of the anvil 12 ;
  • a downstream annular duct 23 formed between the proximal wall 16 of the nozzle 13 and the distal wall 18 of the anvil 12.

Du coté aval, le chemin de distribution alimente en produit sous pression l'ensemble tourbillonnaire qui comprend une chambre d'impaction tourbillonnaire 24 pourvue d'un orifice de distribution 25 ainsi qu'au moins deux canaux 26 d'alimentation de ladite chambre. Plus précisément, dans le mode de réalisation représenté, les canaux 26 d'alimentation communiquent avec le conduit annulaire aval 23. En particulier, cette réalisation permet de limiter la longueur des canaux 26 d'alimentation afin de réduire les pertes de charge induites.On the downstream side, the distribution path feeds the vortex assembly into pressurized product which comprises a vortex impaction chamber 24 provided with a dispensing orifice 25 and at least two supply channels 26 of said chamber. More precisely, in the embodiment shown, the supply channels 26 communicate with the downstream annular duct 23. In particular, this embodiment makes it possible to limit the length of the supply channels 26 in order to reduce the induced pressure drops.

La chambre d'impaction tourbillonnaire 24 est délimitée par une surface latérale 27 qui s'étend suivant un axe de distribution D depuis une extrémité amont 28 dans laquelle débouche l'extrémité aval des canaux 26 d'alimentation vers une ouverture aval 29 d'alimentation de l'orifice de distribution 25. Dans la description, les termes de positionnement dans l'espace sont définis par rapport à l'axe de distribution D.The vortex impaction chamber 24 is delimited by a lateral surface 27 which extends along a distribution axis D from an upstream end 28 into which the downstream end of the supply channels 26 opens to a downstream feed aperture 29 of the dispensing orifice 25. In the description, the positioning terms in the space are defined with respect to the distribution axis D.

Dans le mode de réalisation représenté, la surface latérale 27 de la chambre d'impaction tourbillonnaire présente une géométrie de révolution autour de l'axe de distribution D, une dimension interne de ladite géométrie correspondant alors à un diamètre. Plus précisément, la géométrie représentée est cylindrique mais, en variante non représentée, la géométrie pourrait être tronconique de révolution avec une convergence orientée vers l'ouverture aval 29. Selon une autre variante non représentée, la géométrie de la paroi latérale 27 peut être à section polygonale, une dimension interne de ladite géométrie correspondant alors à un diamètre de l'enveloppe inscrite dans ladite géométrie.In the embodiment shown, the lateral surface 27 of the swirling impaction chamber has a geometry of revolution about the distribution axis D, an internal dimension of said geometry then corresponding to a diameter. More precisely, the geometry represented is cylindrical but, as a variant, not shown, the geometry could be frustoconical of revolution with a convergence oriented towards the downstream opening 29. other variant not shown, the geometry of the side wall 27 may be of polygonal section, an internal dimension of said geometry then corresponding to a diameter of the envelope inscribed in said geometry.

Les canaux 26 d'alimentation et donc les jets de produit qui alimentent la chambre d'impaction tourbillonnaire 24 s'étendent transversalement par rapport à l'axe de distribution D, c'est-à-dire dans un plan perpendiculaire audit axe de distribution. Par ailleurs, chacun des canaux 26 d'alimentation est délimité latéralement entre une paroi intérieure 30 et une paroi extérieure 31.The supply channels 26 and therefore the jets of product which feed the vortex impaction chamber 24 extend transversely with respect to the distribution axis D, that is to say in a plane perpendicular to said distribution axis . Furthermore, each of the supply channels 26 is delimited laterally between an inner wall 30 and an outer wall 31.

Dans le mode de réalisation représenté, les canaux 26 d'alimentation présentent une section en U, les branches dudit U s'étendant suivant l'axe de distribution D. En outre, les extrémités libres du U sont en appui sur la portée plane de la paroi distale 18, ladite portée s'étendant transversalement pour fermer les canaux 26 d'alimentation suivant cette direction. En variante non représentée, des canaux 26 à section en V peuvent être prévus pour alimenter la chambre d'impaction tourbillonnaire 24.In the embodiment shown, the supply channels 26 have a U-shaped section, the branches of said U extending along the distribution axis D. In addition, the free ends of the U rest on the flat surface of the distal wall 18, said scope extending transversely to close the supply channels 26 in this direction. In a variant not shown, V-section channels 26 may be provided for supplying the vortex impaction chamber 24.

En relation avec la figure 3b, les parois intérieures 30 s'étendent suivant une direction I normale à l'extrémité amont 28 et les parois extérieures 31 s'étendent suivant une direction qui forme un angle α strictement positif avec une direction E normale à l'extrémité amont 28. Dans la géométrie représentée, les directions normales I, E correspondent à un diamètre du cylindrique de révolution dans lequel l'extrémité amont 28 est formée.In relation to the figure 3b , the inner walls 30 extend in a direction I normal to the upstream end 28 and the outer walls 31 extend in a direction which forms a strictly positive angle α with a direction E normal to the upstream end 28. In the geometry shown, the normal directions I, E correspond to a diameter of the cylindrical revolution in which the upstream end 28 is formed.

Ainsi, lors de la distribution du produit sous pression, les jets de produit transversaux qui proviennent de chacun des canaux 26 s'impactent dans l'ouverture amont 28 pour former l'aérosol. Cette réalisation de l'impaction dans la chambre d'impaction tourbillonnaire 24 permet notamment d'éviter les problèmes de projection de jets parasites pour défaut de convergence. Il est alors possible de prévoir des canaux 26 d'alimentation de section réduite afin, par augmentation de la vitesse des jets, d'éliminer le phénomène de jet continu en fin de dose.Thus, during the distribution of the product under pressure, the transverse product streams that come from each of the channels 26 are impinged in the upstream opening 28 to form the aerosol. This embodiment of the impaction in the swirling impaction chamber 24 makes it possible in particular to avoid the problems of projection of parasitic jets for lack of convergence. It is then possible to provide reduced section supply channels 26, by increasing the speed of the jets, to eliminate the continuous jet phenomenon at the end of the dose.

En outre, l'angle α de la paroi extérieure 31 induit une composante de rotation de l'aérosol dans la chambre d'impaction tourbillonnaire 24 afin de favoriser son éjection au travers de l'orifice de distribution 25. En particulier, une composante de rotation optimale de l'aérosol dans la chambre d'impaction tourbillonnaire 24 est obtenue avec un angle α compris entre 10° et 20°, notamment égal à 15°.In addition, the angle α of the outer wall 31 induces a rotational component of the aerosol in the swirling impaction chamber 24 to promote its ejection through the dispensing orifice 25. In particular, a component of Optimum rotation of the aerosol in the swirling impaction chamber 24 is obtained with an angle α of between 10 ° and 20 °, in particular equal to 15 °.

Par ailleurs, la fermeture de l'ensemble tourbillonnaire étant réalisée par pressage de la buse 13 en matériau dur sur une portée plane de l'enclume 12 en matériau plus tendre, une dispersion de la force d'écrasement n'induit pas de modification notable dans la section des canaux 26 d'alimentation par fluage de matière. En outre, la géométrie de l'enclume 12 est alors standard et la mise en oeuvre de l'invention ne peut nécessiter que le changement de la buse 13.Moreover, the closure of the swirl assembly being carried out by pressing the nozzle 13 of hard material on a flat surface of the anvil 12 of softer material, a dispersion of the crushing force does not induce any significant modification. in the channel section 26 creep feed material. In addition, the geometry of the anvil 12 is then standard and the implementation of the invention can only require the change of the nozzle 13.

En variante non représentée, la paroi distale 18 de l'enclume 12 peut présenter un bombage qui est centré dans l'extrémité amont 28 de la chambre d'impaction tourbillonnaire 24. Ainsi, les jets transversaux délivrés par les canaux 26 peuvent être légèrement soulevés sur le bombage avant leur impaction de sorte à favoriser l'éjection de l'aérosol au travers de l'orifice de distribution 25.In a variant not shown, the distal wall 18 of the anvil 12 may have a bending which is centered in the upstream end 28 of the vortex impaction chamber 24. Thus, the transverse jets delivered by the channels 26 may be slightly raised on the bending before their impaction so as to promote the ejection of the aerosol through the dispensing orifice 25.

Le bouton poussoir selon l'invention permet notamment la réalisation d'un aérosol formé d'une répartition spatiale uniforme de gouttelettes en suspension dans l'air, la taille desdites gouttelettes étant petite et uniforme. En relation avec un produit parfumant alcoolique dont la pression de distribution est comprise entre 5 et 7 bars, l'aérosol peut présenter des gouttelettes dont la taille moyenne est de 40 µm pour une dispersion de 20 µm, et ce quelque soit la force d'appui que l'utilisateur exerce sur le bouton poussoir.The push button according to the invention allows in particular the realization of an aerosol formed of a uniform spatial distribution of droplets suspended in the air, the size of said droplets being small and uniform. In relation with an alcoholic perfuming product whose delivery pressure is between 5 and 7 bar, the aerosol may have droplets whose average size is 40 microns for a dispersion of 20 microns, and whatever the strength of support that the user exerts on the push button.

De façon avantageuse, l'orifice de distribution 25 présente une dimension de sortie qui est égale à la dimension interne de l'ouverture aval 29. En effet, il n'est pas nécessaire d'avoir un orifice 25 de diamètre réduit pour former l'aérosol puisque, contrairement à l'art antérieur, l'aérosol et non le produit liquide est mis en rotation dans la chambre d'impaction tourbillonnaire 24.Advantageously, the dispensing orifice 25 has an outlet dimension which is equal to the internal dimension of the downstream opening 29. In fact, it is not necessary to have a hole 25 of reduced diameter to form the aerosol since, unlike the prior art, the aerosol and not the liquid product is rotated in the vortex impaction chamber 24.

Dans le mode de réalisation représenté, l'ouverture aval 29 de la chambre d'impaction tourbillonnaire 24 forme l'orifice de distribution 25. Par ailleurs, la paroi proximale 16 présente un logement 32 tronconique divergeant dans lequel débouche l'orifice de distribution 25. En variante non représentée, l'ouverture aval 29 de la chambre d'impaction tourbillonnaire 24 peut être surmontée par un orifice de distribution 25, notamment un orifice cylindrique dans le cas d'une chambre d'impaction tourbillonnaire tronconique.In the embodiment shown, the downstream opening 29 of the swirling impaction chamber 24 forms the dispensing orifice 25. Furthermore, the proximal wall 16 has a diverging frustoconical housing 32 into which the dispensing orifice 25 opens. As a variant not shown, the downstream opening 29 of the swirling impaction chamber 24 may be surmounted by a dispensing orifice 25, in particular a cylindrical orifice in the case of a frustoconical swirl impaction chamber.

Dans le mode de réalisation représenté, l'ensemble tourbillonnaire présente deux canaux 26 d'alimentation de la chambre d'impaction tourbillonnaire 24 qui sont disposés en regard l'un de l'autre par rapport à l'axe de distribution D pour réaliser une impaction frontale des jets de produit au voisinage dudit axe. Plus précisément, les parois intérieures 30 s'étendent suivant la même direction normale I et les parois extérieures 31 s'étendent suivant une direction qui forme un angle α avec la même direction normale E.In the embodiment shown, the swirl assembly has two channels 26 for supplying the vortex impaction chamber 24 which are arranged facing each other with respect to the distribution axis D to achieve a frontal impaction of the jets of product in the vicinity of said axis. More specifically, the inner walls 30 extend in the same normal direction I and the outer walls 31 extend in a direction which forms an angle α with the same normal direction E.

En variante non représentée, trois canaux 26 peuvent être prévus pour alimenter la chambre d'impaction tourbillonnaire 24, par exemple en étant disposés symétriquement par rapport à l'axe de distribution D pour permettre une impaction des trois jets au voisinage dudit axe.In a variant not shown, three channels 26 may be provided to feed the swirling impaction chamber 24, for example by being arranged symmetrically with respect to the distribution axis D to allow an impaction of the three jets in the vicinity of said axis.

L'ensemble des extrémités aval de chacun des canaux 26 d'alimentation forme une section d'alimentation de la chambre d'impaction tourbillonnaire 24. Pour augmenter la vitesse d'impaction des jets de produit, on peut prévoir que cette section d'alimentation soit faible, notamment relativement à la surface intérieure de l'extrémité amont 28.The set of downstream ends of each of the supply channels 26 forms a supply section of the swirling impaction chamber 24. To increase the impaction speed of the product jets, it is possible to provide that this supply section is low, especially relative to the inner surface of the upstream end 28.

De façon préférentielle, la surface de la section d'alimentation peut être comprise entre 0,01 mm2 et 0,03 mm2. Dans un exemple de réalisation, la dimension interne de l'extrémité amont 28 est comprise entre 0,35 mm et 0,45 mm, notamment en étant égale à 0,4 mm, et chacun des deux canaux 26 présente, notamment dans son extrémité aval, une largeur et une profondeur de 0,1 mm, soit une surface de 0,02 mm2 pour la section d'alimentation.Preferably, the surface of the feed section may be between 0.01 mm 2 and 0.03 mm 2 . In an exemplary embodiment, the internal dimension of the upstream end 28 is between 0.35 mm and 0.45 mm. mm, in particular being equal to 0.4 mm, and each of the two channels 26 has, in particular in its downstream end, a width and a depth of 0.1 mm, ie an area of 0.02 mm 2 for the section d 'food.

En outre, du fait du passage du produit dans une section d'alimentation réduite, la durée de distribution est augmentée. Par exemple, pour une dose de 130 µl la durée de distribution peut être de l'ordre de 1 secondes de sorte à laisser la possibilité à l'utilisateur d'interrompre la distribution de l'aérosol en cours d'actionnement.In addition, due to the passage of the product in a reduced feed section, the dispensing time is increased. For example, for a dose of 130 μl the distribution time may be of the order of 1 second so as to allow the user to interrupt the distribution of the aerosol during actuation.

De façon préférentielle, la dimension axiale de la chambre d'impaction tourbillonnaire 24 est relativement faible, notamment inférieure à la dimension interne de l'extrémité amont 28. Ainsi, on obtient une éjection rapide de l'aérosol sans perte de charge trop importante afin d'éviter la diminution de la vitesse d'éjection ainsi que la formation de gouttes de produit sur la paroi latérale 27. Selon une réalisation, la dimension axiale de la chambre d'impaction tourbillonnaire 24 est comprise entre 0,20 mm et 0,30 mm.Preferably, the axial dimension of the vortex impaction chamber 24 is relatively small, in particular less than the internal dimension of the upstream end 28. Thus, a rapid ejection of the aerosol is obtained without excessive pressure drop so that to avoid decreasing the ejection speed and the formation of product drops on the side wall 27. In one embodiment, the axial dimension of the vortex impaction chamber 24 is between 0.20 mm and 0, 30 mm.

Claims (14)

Bouton poussoir pour un système de distribution d'un produit sous pression, ledit bouton poussoir comprenant un corps (1) présentant un puits (3) de montage sur un tube d'amenée (4) du produit sous pression et un logement (11) en communication avec ledit puits, ledit logement étant pourvu d'une enclume (12) autour de laquelle une buse (13) de pulvérisation est montée de sorte à former un chemin de distribution du produit entre ledit logement et un ensemble tourbillonnaire comprenant une chambre d'impaction tourbillonnaire (24) pourvue d'un orifice (25) de distribution ainsi qu'au moins deux canaux (26) d'alimentation de ladite chambre, ladite chambre d'impaction tourbillonnaire étant délimitée par une surface latérale (27) qui s'étend suivant un axe de distribution (D) depuis une extrémité amont (28) dans laquelle débouche l'extrémité aval des canaux (26) d'alimentation vers une ouverture aval (29) d'alimentation de l'orifice de distribution (25), les canaux (26) d'alimentation s'étendant transversalement par rapport audit axe de distribution en étant délimités latéralement chacun entre une paroi intérieure (30) et une paroi extérieure (31), lesdites parois intérieures s'étendant suivant une direction (I) normale à l'extrémité amont (28) et lesdites parois extérieures s'étendant suivant une direction qui forme un angle α strictement positif avec une direction (E) normale à l'extrémité amont (28).Push button for a system for dispensing a product under pressure, said push button comprising a body (1) having a well (3) for mounting on a feed tube (4) of the pressurized product and a housing (11) in communication with said well, said housing being provided with an anvil (12) around which a spray nozzle (13) is mounted so as to form a product distribution path between said housing and a vortex assembly comprising a chamber vortex impaction (24) provided with a dispensing orifice (25) and at least two supply channels (26) for said chamber, said vortex impaction chamber being delimited by a lateral surface (27) which extends along a distribution axis (D) from an upstream end (28) into which the downstream end of the supply channels (26) opens to a downstream opening (29) for supplying the dispensing orifice (25). ), the channels (26) of extending transversely to said distribution axis being delimited laterally each between an inner wall (30) and an outer wall (31), said inner walls extending in a direction (I) normal to the upstream end ( 28) and said outer walls extending in a direction which forms a strictly positive angle α with a direction (E) normal to the upstream end (28). Bouton poussoir selon la revendication 1, caractérisé en ce que l'angle α est compris entre 10° et 20°.Push button according to Claim 1, characterized in that the angle α is between 10 ° and 20 °. Bouton poussoir selon la revendication 1 ou 2, caractérisé en ce que les canaux (26) d'alimentation présentent une section en U, les branches dudit U s'étendant suivant l'axe de distribution (D).Push button according to claim 1 or 2, characterized in that the supply channels (26) have a U-shaped section, the branches of said U extending along the distribution axis (D). Bouton poussoir selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la surface latérale (27) de la chambre d'impaction tourbillonnaire (24) présente une géométrie de révolution autour de l'axe de distribution (D).Push button according to one of Claims 1 to 3, characterized in that the lateral surface (27) of the impaction chamber vortex (24) has a geometry of revolution around the distribution axis (D). Bouton poussoir selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la dimension interne de l'extrémité amont (28) est comprise entre 0,35 mm et 0,45 mm.Push button according to any one of claims 1 to 4, characterized in that the internal dimension of the upstream end (28) is between 0.35 mm and 0.45 mm. Bouton poussoir selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la dimension axiale de la chambre d'impaction tourbillonnaire (24) est comprise entre 0,20 mm et 0,30 mm.Push button according to any one of claims 1 to 5, characterized in that the axial dimension of the vortex impaction chamber (24) is between 0.20 mm and 0.30 mm. Bouton poussoir selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'ouverture aval (29) de la chambre d'impaction tourbillonnaire (24) forme l'orifice de distribution (25).Push button according to any one of claims 1 to 6, characterized in that the downstream opening (29) of the swirling impaction chamber (24) forms the dispensing orifice (25). Bouton poussoir selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'ensemble des extrémités aval de chacun des canaux (26) d'alimentation forme une section d'alimentation de la chambre d'impaction tourbillonnaire (24), la surface de ladite section étant comprise entre 0,01 mm2 et 0,03 mm2.Push button according to any one of claims 1 to 7, characterized in that the set of downstream ends of each of the supply channels (26) forms a feed section of the swirling impaction chamber (24), the surface of said section being between 0.01 mm 2 and 0.03 mm 2 . Bouton poussoir selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les extrémités aval des canaux (26) d'alimentation présentent une largeur de l'ordre de 0,10 mm.Push button according to any one of claims 1 to 8, characterized in that the downstream ends of the supply channels (26) have a width of the order of 0.10 mm. Bouton poussoir selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'ensemble tourbillonnaire comprend deux canaux (26) d'alimentation disposés en regard l'un de l'autre par rapport à l'axe de distribution (D).Push button according to any one of Claims 1 to 9, characterized in that the swirl assembly comprises two supply channels (26) arranged facing one another with respect to the distribution axis (D ). Bouton poussoir selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la buse (13) présente une paroi proximale (16) dans laquelle est formée une empreinte de l'ensemble tourbillonnaire et l'enclume (12) présente une paroi distale (18) formant une portée plane sur laquelle la paroi proximale (16) de la buse (13) est en appui pour délimiter ledit ensemble tourbillonnaire entre lesdites parois.Push button according to any one of claims 1 to 10, characterized in that the nozzle (13) has a proximal wall (16) in which is formed an impression of the swirl assembly and the anvil (12) has a distal wall (18) forming a flat surface on which the proximal wall (16) of the nozzle (13) bears to define said swirl assembly between said walls. Bouton poussoir selon la revendication 11, caractérisé en ce que la paroi distale (18) présente un bombage qui est centré dans l'extrémité amont (28) de la chambre d'impaction tourbillonnaire (24).Push button according to claim 11, characterized in that the distal wall (18) has a bending which is centered in the upstream end (28) of the vortex impaction chamber (24). Bouton poussoir selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le chemin de distribution présente un conduit annulaire amont (19) et un conduit annulaire aval (23), lesdits conduits annulaires étant en communication par l'intermédiaire d'au moins un conduit axial (20), les canaux (26) d'alimentation communiquant avec ledit conduit annulaire aval.Push button according to any one of claims 1 to 12, characterized in that the distribution path has an upstream annular duct (19) and a downstream annular duct (23), said annular ducts being in communication via at least one axial duct (20), the supply ducts (26) communicating with said downstream annular duct. Système de distribution d'un produit sous pression, comprenant un dispositif de prélèvement (7) équipé d'un tube (4) d'amenée du produit sous pression sur lequel le puits (3) d'un bouton poussoir selon l'une quelconque des revendications 1 à 13 est monté pour permettre la pulvérisation du produit.System for dispensing a product under pressure, comprising a sampling device (7) equipped with a tube (4) for supplying the pressurized product on which the well (3) of a push button according to any one Claims 1 to 13 are mounted for spraying the product.
EP11290041.0A 2010-01-25 2011-01-24 Push button for a system for pressurised product distribution Not-in-force EP2353726B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1000274A FR2955567B1 (en) 2010-01-25 2010-01-25 PUSH BUTTON FOR A SYSTEM FOR DISTRIBUTING A PRESSURIZED PRODUCT

Publications (2)

Publication Number Publication Date
EP2353726A1 true EP2353726A1 (en) 2011-08-10
EP2353726B1 EP2353726B1 (en) 2013-05-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11290041.0A Not-in-force EP2353726B1 (en) 2010-01-25 2011-01-24 Push button for a system for pressurised product distribution

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EP (1) EP2353726B1 (en)
ES (1) ES2423831T3 (en)
FR (1) FR2955567B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9188190B2 (en) 2011-02-24 2015-11-17 Textron Innovations Inc. Temperature adaptive fluid damping system
FR3032895A1 (en) * 2015-02-24 2016-08-26 Albea Le Treport PUSH BUTTON FOR A PRESSURE DISTRIBUTION SYSTEM OF A PRODUCT

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005097345A1 (en) * 2004-04-05 2005-10-20 Andrey Leonidovich Dushkin Liquid atomizer
FR2915470A1 (en) 2007-04-24 2008-10-31 Rexam Dispensing Systems Sas Push button for use in e.g. liquid, distributor, has distribution interface defined by inner surface of female element and outer surface of male element, where passages are placed in interface and surfaces are in contact between passages
EP2119508A1 (en) * 2008-05-14 2009-11-18 Rexam Dispensing Systems Push button for convergent distribution channels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005097345A1 (en) * 2004-04-05 2005-10-20 Andrey Leonidovich Dushkin Liquid atomizer
FR2915470A1 (en) 2007-04-24 2008-10-31 Rexam Dispensing Systems Sas Push button for use in e.g. liquid, distributor, has distribution interface defined by inner surface of female element and outer surface of male element, where passages are placed in interface and surfaces are in contact between passages
EP2119508A1 (en) * 2008-05-14 2009-11-18 Rexam Dispensing Systems Push button for convergent distribution channels

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9188190B2 (en) 2011-02-24 2015-11-17 Textron Innovations Inc. Temperature adaptive fluid damping system
FR3032895A1 (en) * 2015-02-24 2016-08-26 Albea Le Treport PUSH BUTTON FOR A PRESSURE DISTRIBUTION SYSTEM OF A PRODUCT
WO2016174331A1 (en) * 2015-02-24 2016-11-03 Albea Le Treport Pushbutton for a system for dispensing a product under pressure

Also Published As

Publication number Publication date
FR2955567B1 (en) 2012-02-24
FR2955567A1 (en) 2011-07-29
ES2423831T3 (en) 2013-09-24
EP2353726B1 (en) 2013-05-01

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