EP2496361B2 - Pushbutton for a system for dispensing a pressurized substance - Google Patents

Pushbutton for a system for dispensing a pressurized substance Download PDF

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Publication number
EP2496361B2
EP2496361B2 EP10781946.8A EP10781946A EP2496361B2 EP 2496361 B2 EP2496361 B2 EP 2496361B2 EP 10781946 A EP10781946 A EP 10781946A EP 2496361 B2 EP2496361 B2 EP 2496361B2
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EP
European Patent Office
Prior art keywords
push
button according
internal dimension
dispensing
upstream end
Prior art date
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Active
Application number
EP10781946.8A
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German (de)
French (fr)
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EP2496361A1 (en
EP2496361B1 (en
Inventor
Jean-Pierre Songbe
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.)
Silgan Dispensing Systems Le Treport SAS
Original Assignee
Albea Le Treport SAS
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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
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3442—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle

Definitions

  • the invention relates to a push button for a system for dispensing a product under pressure, as well as such a distribution system.
  • the distribution system is intended to equip bottles used in perfumery, cosmetics or for pharmaceutical treatments.
  • this type of bottle contains a product which is returned by a distribution system comprising a device for taking pressure of said product, said system being actuated by a push button to allow spraying of the product.
  • the sampling device comprises a pump or a valve with manual actuation by means of the push button.
  • Such push buttons are conventionally produced in two parts: an actuating body and a product spray nozzle which are associated with each other to form a vortex assembly comprising a vortex chamber provided with a dispensing orifice and at least one supply channel for said chamber.
  • the feed channels open tangentially into the vortex chamber which is cylindrical in revolution to rotate the product very quickly, the dispensing orifice having a reduced diameter compared to that of said chamber so that the product in rotation s 'escapes through said orifice with sufficient speed to break up into droplets forming the aerosol.
  • the aerosol is made up of droplets of very varied sizes.
  • the aerosol is commonly found to be droplets of diameter between 5 ⁇ m and 300 ⁇ m.
  • the large droplets are heavier than the smallest and follow a different distribution path, which can cause permanent stains in the case of perfumes.
  • the small droplets are the lightest and can be inhaled, which can be the objective sought in the case of drugs, but which can be an adverse effect in the case of toxic products.
  • the place of application for example inside the respiratory system, depends on the size of the droplets, and the great disparity in sizes distorts the treatment.
  • the size of the droplets from a vortex chamber partly depends on the force and the speed with which the user actuates the pump by 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 the droplets while there are few of them. inside the cone.
  • this distribution of droplets can be harmful for dermal applications.
  • a push button comprising a dispensing chamber which is provided with channels each converging towards an outlet orifice, said convergent channels being arranged to allow the jets of product dispensed by said orifices to be impacted.
  • Such push buttons are also known from documents EP 0 412 524 A1 and FR 2 927 551 A1 .
  • the supply of the converging conduits or of the vortex chamber according to the prior art does not allow a fractionation of the dose of product to be dispensed, that is to say of restoring only part of the planned dose by the pump.
  • the push button press stroke is carried out too quickly, in particular of the order of 0.2 seconds for 120 ⁇ l, to be able to be interrupted by the user.
  • the invention aims to solve the problems of the prior art by proposing in particular a push button allowing the distribution of an aerosol formed of droplets having an improved calibration and spatial distribution, and this by increasing the duration of production of said aerosol.
  • the invention provides 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 supplying 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 so as to form a product distribution path between said housing and a vortex assembly comprising a vortex chamber provided with a dispensing orifice as well as at least one supply channel for said chamber, said vortex chamber being delimited by a lateral surface having a frustoconical geometry with respect to which the supply channel or channels extend in a transverse plane, said lateral surface being convergent from an upstream end into which tangentially opens the downstream end of the or supply channels to a downstream feed opening of the dispensing orifice, said dispensing orifice having an outlet dimension which is equal to the internal dimension of said downstream opening.
  • the invention provides a system for distributing a product under pressure, comprising a sampling device equipped with a tube for supplying the product under pressure on which the well of such a push button is mounted for allow the product to be sprayed.
  • a push button is described below for a system for dispensing a product, in particular a liquid under pressure, said product being able to be 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 which surrounds a well 3 for mounting the push button on a supply tube 4 for the product under pressure. Furthermore, the push button includes an upper zone 5 allowing the user to exert a digital press on said push button in order to be able to move it axially. In the embodiment shown, the push button is equipped with an embellishment 6 of appearance which surrounds the body 1 and on which the upper support zone 5 is formed.
  • the distribution system comprises a withdrawal device 6 equipped with a tube 4 for supplying the pressurized product which is inserted in leaktight manner in the well 3.
  • the distribution system also comprises mounting means 7 on a bottle 8 containing the product and means 9 for taking the product inside said bottle which are arranged to supply the supply tube 4 with product under pressure.
  • the sampling device 6 can comprise a manually actuated pump or, in the case where the product is conditioned under pressure in the bottle 8, a manually actuated valve.
  • a manually actuated pump or, in the case where the product is conditioned under pressure in the bottle 8, a manually actuated valve.
  • the body 1 also has an annular housing 10 which is in communication with the well 3.
  • the housing 10 has an 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 10 can be collinear with the well 3, in particular for a push button forming a nasal spray tip.
  • the housing 10 is provided with an anvil 11 around which a spray nozzle 12 is mounted so as to form a distribution path for the product under pressure between said housing and a vortex assembly.
  • the anvil 11 extends from the bottom of the housing 10, leaving a communication channel 13 between the well 3 and said housing.
  • the nozzle 12 has a cylindrical side wall 14 of revolution which is closed towards the front by a proximal wall 15.
  • the association of the nozzle 12 in the housing 10 is achieved by fitting the external face from the side wall 14, the rear edge of said external face being further provided with a radial projection 16 for anchoring the nozzle 12 in said housing.
  • an imprint of the vortex assembly is formed in the hollow in the proximal wall 15 and the anvil 11 has a flat distal wall 17 on which the proximal wall 15 of the nozzle 12 is in abutment to delimit the assembly between them. swirling.
  • an impression of the vortex assembly can be formed directly on a wall of the housing 10, in particular for a nasal spray nozzle.
  • the distal wall 17 may have a convexity facing the interior of the vortex assembly.
  • the nozzle 12 and the body 1 are produced by molding, in particular from a different thermoplastic material.
  • the material forming the nozzle 12 has a rigidity which is greater than the rigidity of the material forming the body 1.
  • the significant stiffness of the nozzle 12 makes it possible to avoid its deformation during its mounting in the housing 10 so to guarantee the geometry of the vortex assembly.
  • the lower stiffness of the body 1 allows improved sealing between the mounting well 3 and the supply tube 4.
  • the body 1 is made of polyolefin and the nozzle 12 is made of cyclo olefin copolymer (COC), poly (oxymethylene) or poly (butylene terephthalate).
  • the distribution path supplies pressurized product with the vortex assembly which comprises a vortex chamber 22 provided with a distribution orifice 23 as well as at least one channel 24 for supplying said chamber.
  • the supply channels 24 communicate with the downstream annular conduit 21.
  • this embodiment makes it possible to limit the length of the supply channels 24 in order to reduce the induced pressure losses.
  • the vortex chamber 22 is delimited by a lateral surface 25 having a frustoconical geometry which extends along a distribution axis D, the distribution channels 24 extending in a plane transverse to said distribution axis.
  • the terms of positioning in space are defined relative to the distribution axis.
  • the frustoconical geometry is of revolution around the distribution axis D, an internal dimension of said geometry then corresponding to a diameter.
  • the frustoconical geometry can be of polygonal section, an internal dimension of said geometry then corresponding to a diameter of the envelope inscribed in said geometry.
  • the lateral surface 25 converges from an upstream end 26 into which the downstream end of the supply channels 24 tangentially opens to a downstream opening 27 supplying the distribution orifice 23.
  • the distribution orifice 23 has an outlet dimension which is equal to the internal dimension of the downstream opening 27.
  • the angle of convergence of the lateral surface 25 can be between 30 ° and 50 °, in particular of the order of 45 °.
  • the upstream end 26 has a cylindrical geometry of revolution in which the downstream end of the supply channels 24 opens tangentially.
  • the tangential supply of the swirl chamber 22 makes it possible to put the product in rotation in the upstream end 26 of said chamber, the product is then pressed and pushed in rotation along the lateral surface 25 of said chamber forming a sheet of product whose speed of rotation increases and which converges towards the downstream opening 27, then said convergent sheet can escape through the dispensing orifice 23 without being deformed so as to be able to impact to form the aerosol.
  • This embodiment therefore makes it possible to combine the advantages of the use of a vortex chamber 22 with that of the impaction of the product, without having the disadvantages, in particular relative to the dispersion of droplet sizes and to the risks of non-impaction of the product.
  • the impact of the swirling sheet allows in particular the production 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 can then have the appearance of a plume of smoke with droplet sizes between 10 ⁇ m and 60 ⁇ m with an average of 35 ⁇ m for an alcoholic product, whatever the support force that the user exercises on the push button.
  • the vortex assembly has two channels 24 for supplying the vortex chamber 22, said channels being arranged symmetrically with respect to the distribution axis D.
  • each channel 24 has a U-shaped section which is delimited between an outer wall 28 and an inner wall 29.
  • the outer wall 28 is tangent to the upstream end 26 and the inner wall 29 is offset from it by a distance less than 30% of the internal dimension of the upstream end 26 so as to avoid impaction of the product in said upstream end.
  • the inner wall 29 is parallel to the outer wall 28.
  • the inner wall 29 has an angle of convergence with the outer wall 28 in the upstream-downstream direction, the offset between said said walls then being measured at the unblocking section of the channels 24 in the upstream end 26.
  • more than two supply channels 24 can be provided, in particular three channels 24 arranged symmetrically with respect to the distribution axis D, or a single channel 24 can be provided for tangentially supplying the vortex chamber 22.
  • downstream end of the feed channel 24 or all of the downstream ends of each of the feed channels 24 form a feed section of the vortex chamber 22.
  • this feed section it is possible to provide for this feed section to be small relative to the interior surface of the upstream end 26.
  • the area of the feed section may be less than 10% of the interior surface of the upstream end 26.
  • the surface of the feed section can be between 0.01 mm 2 and 0.03 mm 2 .
  • the internal dimension of the upstream end 26 is 0.6 mm, i.e. a internal surface of 0.28 mm 2
  • each channel 24 has a width and a depth of 0.1 mm, that is an area of 0.02 mm 2 for the supply section.
  • the channels 24 may have a width of 70 ⁇ m and a depth of 130 ⁇ m.
  • the dispensing time is increased.
  • the duration of dispensing can be between 0.5 and 2 seconds so as to leave the possibility for the user to interrupt the dispensing of the aerosol during actuation.
  • downstream opening 27 of the swirl chamber is surmounted by a distribution orifice 23 having a cylindrical geometry of revolution around the distribution axis D, the internal dimension of said orifice being equal to the internal dimension downstream opening 27.
  • the axial dimension of the dispensing orifice 23 is small compared to its internal dimension, so as not to disturb the convergence of the swirling sheet.
  • the axial dimension of the dispensing orifice 23 can be less than 50% of its internal dimension.
  • downstream opening 27 of the swirl chamber 22 can form a dispensing orifice 23.
  • the aerosol is particularly satisfactory when the internal dimension of the downstream opening 27 is small relative to the internal dimension of the upstream end 26, so that the impact of the sheet is carried out as close as possible to the distribution orifice 23.
  • the internal dimension of the downstream opening 27 can be less than 50% of the internal dimension of the upstream end 26, more precisely by being between 20% and 40% of said internal dimension.
  • the axial dimension of the vortex chamber 22 is relatively large, in particular of the order or greater than the internal dimension of the upstream end 26, so as to allow the establishment of the swirling sheet along the lateral surface 25 of said vortex chamber and to impart progressive convergence.
  • the axial dimension of the vortex chamber 22 is at least equal to 80% of the internal dimension of the upstream end 26, more precisely being between 90% and 200% of said internal dimension.
  • the internal dimension of the upstream end 26 is 0.6 mm
  • the internal dimension of the downstream end 27 is less than or equal to 0.24 mm, being in particular between 0.15 mm and 0.24 mm
  • the axial dimension of the vortex chamber 22 is at least equal to 0.55 mm
  • the axial dimension of the dispensing orifice 23 is less at 0.10 mm.

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

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 system for dispensing a product under pressure, as well as such a distribution 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 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 distribution system is intended to equip bottles used in perfumery, cosmetics or for pharmaceutical treatments. In fact, this type of bottle contains a product which is returned by a distribution system comprising a device for taking pressure of said product, said system being actuated by a push button to allow spraying of the product. In particular, the sampling device comprises a pump or a valve with manual actuation by means of 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 produced in two parts: an actuating body and a product spray nozzle which are associated with each other to form a vortex assembly comprising a vortex chamber provided with a dispensing orifice and at least one supply channel for said chamber.

En particulier, les canaux d'alimentation débouchent 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 open tangentially into the vortex chamber which is cylindrical in revolution to rotate the product very quickly, the dispensing orifice having a reduced diameter compared to that of said chamber so that the product in rotation s 'escapes through said orifice with sufficient speed to break up 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 carried out in an uncontrolled manner, the aerosol is made up of droplets of very varied sizes. For example, for a pump or a valve supplying a push button with a flow of alcohol under a pressure of 5 bars, and an outlet orifice of 0.3 mm, the aerosol is commonly found to be 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 smallest and follow a different distribution path, which can cause permanent stains in the case of perfumes. Also, the small droplets are the lightest and can be inhaled, which can be the objective sought in the case of drugs, but which can be an adverse effect in the case of toxic products. In addition, in the case of drugs which must be dispensed according to a precise dosage, the place of application, for example inside the respiratory system, depends on the size of the droplets, and the great disparity in sizes 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 partly depends on the force and the speed with which the user actuates the pump by 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, in particular 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 the droplets while there are few of them. 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. De tels boutons poussoir sont également connus des documents EP 0 412 524 A1 et FR 2 927 551 A1 .We also know, in particular from the document FR-2 915 470 , a push button comprising a dispensing chamber which is provided with channels each converging towards an outlet orifice, said convergent channels being arranged to allow the jets of product dispensed by said orifices to be impacted. Thus, during the impaction of the jets distributed at high speed, an aerosol is formed without having recourse to a vortex chamber. Such push buttons are also known from documents EP 0 412 524 A1 and FR 2 927 551 A1 .

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 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.However, to produce such an aerosol while satisfactorily controlling the calibration and the spatial distribution of the droplets, it is necessary to form identical jets whose convergence is perfect, which is very difficult to achieve industrially at the interface between the body. actuator and the nozzle mounted in said body. As a result, the jets can cross without impacting or only partially impacting, which degrades the calibration and the spatial distribution of the droplets formed.

Par ailleurs, l'alimentation des conduits convergents ou de la chambre tourbillonnaire selon l'art antérieur ne permet pas un fractionnement de la dose de produit à distribuer, c'est-à-dire de ne restituer qu'une partie de la dose prévue par la pompe. En effet, la course d'appui du bouton poussoir est réalisée de façon trop rapide, notamment de l'ordre de 0,2 seconde pour 120 µl, pour pouvoir être interrompue par l'utilisateur.Furthermore, the supply of the converging conduits or of the vortex chamber according to the prior art does not allow a fractionation of the dose of product to be dispensed, that is to say of restoring only part of the planned dose by the pump. Indeed, the push button press stroke is carried out too quickly, in particular of the order of 0.2 seconds for 120 μl, to be able 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 en augmentant la durée de production dudit aérosol.The invention aims to solve the problems of the prior art by proposing in particular a push button allowing the distribution of an aerosol formed of droplets having an improved calibration and spatial distribution, and this by increasing the duration of production of said aerosol.

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 tourbillonnaire pourvue d'un orifice de distribution ainsi qu'au moins un canal d'alimentation de ladite chambre, ladite chambre tourbillonnaire étant délimitée par une surface latérale présentant une géométrie tronconique par rapport à laquelle le ou les canaux d'alimentation s'étendent dans un plan transversal, ladite surface latérale étant convergente depuis une extrémité amont dans laquelle débouche tangentiellement l'extrémité aval du ou des canaux d'alimentation vers une ouverture aval d'alimentation de l'orifice de distribution, ledit orifice de distribution présentant une dimension de sortie qui est égale à la dimension interne de ladite ouverture aval.To this end, and according to a first aspect, the invention provides 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 supplying 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 so as to form a product distribution path between said housing and a vortex assembly comprising a vortex chamber provided with a dispensing orifice as well as at least one supply channel for said chamber, said vortex chamber being delimited by a lateral surface having a frustoconical geometry with respect to which the supply channel or channels extend in a transverse plane, said lateral surface being convergent from an upstream end into which tangentially opens the downstream end of the or supply channels to a downstream feed opening of the dispensing orifice, said dispensing orifice having an outlet dimension which is equal to the internal dimension of said downstream opening.

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 provides a system for distributing a product under pressure, comprising a sampling device equipped with a tube for supplying the product under pressure on which the well of such a push button is mounted for allow the product to be sprayed.

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, given 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 an 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 cutaway perspective ( figure 3a ) and the internal 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 is described below for a system for dispensing a product, in particular a liquid under pressure, said product being able to be 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 which surrounds a well 3 for mounting the push button on a supply tube 4 for the product under pressure. Furthermore, the push button includes an upper zone 5 allowing the user to exert a digital press on said push button in order to be able to move it axially. In the embodiment shown, the push button is equipped with an embellishment 6 of appearance which surrounds the body 1 and on which the upper support zone 5 is formed.

En relation avec la figure 1, le système de distribution comprend un dispositif de prélèvement 6 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 7 sur un flacon 8 contenant le produit et des moyens de prélèvement 9 du produit à l'intérieur dudit flacon qui sont agencés pour alimenter le tube d'amenée 4 en produit sous pression.In connection with the figure 1 , the distribution system comprises a withdrawal device 6 equipped with a tube 4 for supplying the pressurized product which is inserted in leaktight manner in the well 3. In a known manner, the distribution system also comprises mounting means 7 on a bottle 8 containing the product and means 9 for taking the product inside said bottle which are arranged to supply the supply tube 4 with product under pressure.

Le dispositif de prélèvement 6 peut comprendre une pompe à actionnement manuel ou, dans le cas où le produit est conditionné sous pression dans le flacon 8, 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 6 can comprise a manually actuated pump or, in the case where the product is conditioned under pressure in the bottle 8, a manually actuated valve. Thus, during a manual movement of the push button, the pump or the valve is actuated to supply the supply tube 4 with product under pressure.

Le corps 1 présente également un logement annulaire 10 qui est en communication avec le puits 3. Dans le mode de réalisation représenté, le logement 10 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 10 peut être colinéaire au puits 3, notamment pour un bouton poussoir formant embout nasal de pulvérisation.The body 1 also has an annular housing 10 which is in communication with the well 3. In the embodiment shown, the housing 10 has an 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 10 can be collinear with the well 3, in particular for a push button forming a nasal spray tip.

Le logement 10 est pourvu d'une enclume 11 autour de laquelle une buse 12 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 11 s'étend depuis le fond du logement 10 en laissant un canal 13 de communication entre le puits 3 et ledit logement.The housing 10 is provided with an anvil 11 around which a spray nozzle 12 is mounted so as to form a distribution path for the product under pressure between said housing and a vortex assembly. To do this, the anvil 11 extends from the bottom of the housing 10, leaving a communication channel 13 between the well 3 and said housing.

Dans le mode de réalisation représenté, la buse 12 présente une paroi latérale 14 cylindrique de révolution qui est fermée vers l'avant par une paroi proximale 15. L'association de la buse 12 dans le logement 10 est réalisée par emmanchement de la face externe de la paroi latérale 14, le bord arrière de ladite face externe étant en outre pourvu d'une saillie radiale 16 d'ancrage de la buse 12 dans ledit logement.In the embodiment shown, the nozzle 12 has a cylindrical side wall 14 of revolution which is closed towards the front by a proximal wall 15. The association of the nozzle 12 in the housing 10 is achieved by fitting the external face from the side wall 14, the rear edge of said external face being further provided with a radial projection 16 for anchoring the nozzle 12 in said housing.

Par ailleurs, une empreinte de l'ensemble tourbillonnaire est formée en creux dans la paroi proximale 15 et l'enclume 11 présente une paroi distale 17 plane sur laquelle la paroi proximale 15 de la buse 12 est en appui pour délimiter entre elles l'ensemble tourbillonnaire. En variante non représentée, une empreinte de l'ensemble tourbillonnaire peut être formée directement sur une paroi du logement 10, notamment pour un embout nasal de pulvérisation. Dans une autre variante non représentée, la paroi distale 17 peut présenter une convexité tournée vers l'intérieur de l'ensemble tourbillonnaire.Furthermore, an imprint of the vortex assembly is formed in the hollow in the proximal wall 15 and the anvil 11 has a flat distal wall 17 on which the proximal wall 15 of the nozzle 12 is in abutment to delimit the assembly between them. swirling. In a variant not shown, an impression of the vortex assembly can be formed directly on a wall of the housing 10, in particular for a nasal spray nozzle. In another variant not shown, the distal wall 17 may have a convexity facing the interior of the vortex assembly.

De façon avantageuse, la buse 12 et le corps 1 sont réalisés par moulage, notamment d'un matériau thermoplastique différent. En outre, le matériau formant la buse 12 présente une rigidité qui est supérieure à la rigidité du matériau formant le corps 1. Ainsi, la raideur importante de la buse 12 permet d'éviter sa déformation lors de son montage dans le logement 10 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 12 and the body 1 are produced by molding, in particular from a different thermoplastic material. In addition, the material forming the nozzle 12 has a rigidity which is greater than the rigidity of the material forming the body 1. Thus, the significant stiffness of the nozzle 12 makes it possible to avoid its deformation during its mounting in the housing 10 so to guarantee the geometry of the vortex assembly. In addition, the lower stiffness of the body 1 allows improved sealing between the mounting well 3 and the supply tube 4.

Dans un exemple de réalisation, le corps 1 est réalisé en polyoléfine et la buse 12 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 12 is made of cyclo olefin 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 30 en communication avec le canal 13, ledit conduit annulaire étant formé entre la partie arrière de la face interne de la paroi latérale 14 de la buse 12 et la partie de la face externe de la paroi latérale de l'enclume 11 qui est disposée en regard ;
  • quatre conduits axiaux 18 formés entre quatre entretoises 19 qui s'étendent sur la face interne de la paroi latérale 14 de la buse 12, lesdites entretoises présentant une paroi libre 20 qui est emmanchée sur la face externe de la paroi latérale de l'enclume 11 ;
  • un conduit annulaire aval 21 formé entre la paroi proximale 15 de la buse 12 et la paroi distale 17 de l'enclume 11.
In the embodiment shown, the distribution path successively presents in communication from upstream to downstream:
  • an upstream annular conduit 30 in communication with the channel 13, said annular conduit being formed between the rear part of the internal face of the side wall 14 of the nozzle 12 and the part of the external face of the side wall of the anvil 11 which is arranged opposite;
  • four axial conduits 18 formed between four spacers 19 which extend on the internal face of the side wall 14 of the nozzle 12, said spacers having a free wall 20 which is fitted on the external face of the side wall of the anvil 11 ;
  • a downstream annular duct 21 formed between the proximal wall 15 of the nozzle 12 and the distal wall 17 of the anvil 11.

Du coté aval, le chemin de distribution alimente en produit sous pression l'ensemble tourbillonnaire qui comprend une chambre tourbillonnaire 22 pourvue d'un orifice de distribution 23 ainsi qu'au moins un canal 24 d'alimentation de ladite chambre. Plus précisément, dans le mode de réalisation représenté, les canaux 24 d'alimentation communiquent avec le conduit annulaire aval 21. En particulier, cette réalisation permet de limiter la longueur des canaux 24 d'alimentation afin de réduire les pertes de charge induites.On the downstream side, the distribution path supplies pressurized product with the vortex assembly which comprises a vortex chamber 22 provided with a distribution orifice 23 as well as at least one channel 24 for supplying said chamber. More specifically, in the embodiment shown, the supply channels 24 communicate with the downstream annular conduit 21. In particular, this embodiment makes it possible to limit the length of the supply channels 24 in order to reduce the induced pressure losses.

La chambre tourbillonnaire 22 est délimitée par une surface latérale 25 présentant une géométrie tronconique qui s'étend suivant un axe de distribution D, les canaux de distribution 24 s'étendant dans un plan transversal par rapport audit axe de distribution. Dans la description, les termes de positionnement dans l'espace sont définis par rapport à l'axe de distribution.The vortex chamber 22 is delimited by a lateral surface 25 having a frustoconical geometry which extends along a distribution axis D, the distribution channels 24 extending in a plane transverse to said distribution axis. In the description, the terms of positioning in space are defined relative to the distribution axis.

Dans le mode de réalisation représenté, la géométrie tronconique est de révolution autour de l'axe de distribution D, une dimension interne de ladite géométrie correspondant alors à un diamètre. En variante non représentée, la géométrie tronconique 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 frustoconical geometry is of revolution around the distribution axis D, an internal dimension of said geometry then corresponding to a diameter. In a variant not shown, the frustoconical geometry can be of polygonal section, an internal dimension of said geometry then corresponding to a diameter of the envelope inscribed in said geometry.

La surface latérale 25 est convergente depuis une extrémité amont 26 dans laquelle débouche tangentiellement l'extrémité aval des canaux 24 d'alimentation vers une ouverture aval 27 d'alimentation de l'orifice de distribution 23. En outre, l'orifice de distribution 23 présente une dimension de sortie qui est égale à la dimension interne de l'ouverture aval 27. De façon avantageuse, l'angle de convergence de la surface latérale 25 peut être compris entre 30° et 50°, notamment de l'ordre de 45°. Par ailleurs, dans le mode de réalisation représenté, l'extrémité amont 26 présente une géométrie cylindrique de révolution dans laquelle l'extrémité aval des canaux 24 d'alimentation débouche tangentiellement.The lateral surface 25 converges from an upstream end 26 into which the downstream end of the supply channels 24 tangentially opens to a downstream opening 27 supplying the distribution orifice 23. In addition, the distribution orifice 23 has an outlet dimension which is equal to the internal dimension of the downstream opening 27. Advantageously, the angle of convergence of the lateral surface 25 can be between 30 ° and 50 °, in particular of the order of 45 °. Furthermore, in the embodiment shown, the upstream end 26 has a cylindrical geometry of revolution in which the downstream end of the supply channels 24 opens tangentially.

Ainsi, lors de la distribution du produit sous pression, l'alimentation tangentielle de la chambre tourbillonnaire 22 permet de mettre le produit en rotation dans l'extrémité amont 26 de ladite chambre, le produit est ensuite plaqué et poussé en rotation le long de la surface latérale 25 de ladite chambre en formant une nappe de produit dont la vitesse de rotation augmente et qui converge vers l'ouverture aval 27, puis ladite nappe convergente peut s'échapper par l'orifice de distribution 23 sans être déformée de sorte à pouvoir s'impacter pour former l'aérosol.Thus, during the distribution of the product under pressure, the tangential supply of the swirl chamber 22 makes it possible to put the product in rotation in the upstream end 26 of said chamber, the product is then pressed and pushed in rotation along the lateral surface 25 of said chamber forming a sheet of product whose speed of rotation increases and which converges towards the downstream opening 27, then said convergent sheet can escape through the dispensing orifice 23 without being deformed so as to be able to impact to form the aerosol.

Cette réalisation permet donc de combiner les avantages de l'utilisation d'une chambre tourbillonnaire 22 avec celle de l'impaction du produit, sans en avoir les inconvénients, notamment relativement à la dispersion de tailles des gouttelettes et aux risques de non impaction du produit. L'impaction de la nappe tourbillonnante 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 particulier, l'aérosol peut présenter alors l'aspect d'un panache de fumée avec des tailles de gouttelettes comprises entre 10 µm et 60 µm avec une moyenne de 35 µm pour un produit alcoolique, et ce quelque soit la force d'appui que l'utilisateur exerce sur le bouton poussoir.This embodiment therefore makes it possible to combine the advantages of the use of a vortex chamber 22 with that of the impaction of the product, without having the disadvantages, in particular relative to the dispersion of droplet sizes and to the risks of non-impaction of the product. . The impact of the swirling sheet allows in particular the production 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 particular, the aerosol can then have the appearance of a plume of smoke with droplet sizes between 10 μm and 60 μm with an average of 35 μm for an alcoholic product, whatever the support force that the user exercises on the push button.

Dans le mode de réalisation représenté, l'ensemble tourbillonnaire présente deux canaux 24 d'alimentation de la chambre tourbillonnaire 22, lesdits canaux étant disposés symétriquement par rapport à l'axe de distribution D.In the embodiment shown, the vortex assembly has two channels 24 for supplying the vortex chamber 22, said channels being arranged symmetrically with respect to the distribution axis D.

Par ailleurs, pour alimenter tangentiellement la chambre tourbillonnaire 22 en faisant tourner le produit le long de sa surface latérale 25, chaque canal 24 présente une section en U qui est délimitée entre une paroi extérieure 28 et une paroi intérieure 29. La paroi extérieure 28 est tangente à l'extrémité amont 26 et la paroi intérieure 29 est décalée d'elle d'une distance inférieure à 30% de la dimension interne de l'extrémité amont 26 de sorte à éviter une impaction du produit dans ladite extrémité amont.Furthermore, to supply the vortex chamber 22 tangentially by rotating the product along its lateral surface 25, each channel 24 has a U-shaped section which is delimited between an outer wall 28 and an inner wall 29. The outer wall 28 is tangent to the upstream end 26 and the inner wall 29 is offset from it by a distance less than 30% of the internal dimension of the upstream end 26 so as to avoid impaction of the product in said upstream end.

Dans le mode de réalisation représenté, la paroi intérieure 29 est parallèle à la paroi extérieure 28. Dans une variante non représentée, la paroi intérieure 29 présente un angle de convergence avec la paroi extérieure 28 dans le sens amont-aval, le décalage entre lesdites parois étant alors mesuré au niveau de la section de débouchage des canaux 24 dans l'extrémité amont 26.In the embodiment shown, the inner wall 29 is parallel to the outer wall 28. In a variant not shown, the inner wall 29 has an angle of convergence with the outer wall 28 in the upstream-downstream direction, the offset between said said walls then being measured at the unblocking section of the channels 24 in the upstream end 26.

En variante, plus de deux canaux 24 d'alimentation peuvent être prévus, notamment trois canaux 24 disposés symétriquement par rapport à l'axe de distribution D, ou un seul canal 24 peut être prévu pour alimenter tangentiellement la chambre tourbillonnaire 22.As a variant, more than two supply channels 24 can be provided, in particular three channels 24 arranged symmetrically with respect to the distribution axis D, or a single channel 24 can be provided for tangentially supplying the vortex chamber 22.

Par ailleurs, l'extrémité aval du canal 24 d'alimentation ou l'ensemble des extrémités aval de chacun des canaux 24 d'alimentation forme une section d'alimentation de la chambre tourbillonnaire 22. Pour augmenter la durée de distribution d'une dose de produit sur la course d'actionnement du bouton poussoir, on peut prévoir que cette section d'alimentation soit faible relativement à la surface intérieure de l'extrémité amont 26. En particulier, la surface de la section d'alimentation peut être inférieure à 10% de la surface intérieure de l'extrémité amont 26.Furthermore, the downstream end of the feed channel 24 or all of the downstream ends of each of the feed channels 24 form a feed section of the vortex chamber 22. To increase the duration of dispensing a dose of product on the actuation stroke of the push button, it is possible to provide for this feed section to be small relative to the interior surface of the upstream end 26. In particular, the area of the feed section may be less than 10% of the interior surface of the upstream end 26.

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 26 est de 0,6 mm, soit une surface intérieure de 0,28 mm2, et chaque canal 24 présente une largeur et une profondeur de 0,1 mm, soit une surface de 0,02 mm2 pour la section d'alimentation. En variante, les canaux 24 peuvent présenter une largeur de 70 µm et une profondeur de 130 µm.Preferably, the surface of the feed section can be between 0.01 mm 2 and 0.03 mm 2 . In an exemplary embodiment, the internal dimension of the upstream end 26 is 0.6 mm, i.e. a internal surface of 0.28 mm 2 , and each channel 24 has a width and a depth of 0.1 mm, that is an area of 0.02 mm 2 for the supply section. As a variant, the channels 24 may have a width of 70 μm and a depth of 130 μm.

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 120 µl la durée de distribution peut être comprise entre 0,5 et 2 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 120 μl the duration of dispensing can be between 0.5 and 2 seconds so as to leave the possibility for the user to interrupt the dispensing of the aerosol during actuation.

Dans le mode de réalisation représenté, l'ouverture aval 27 de la chambre tourbillonnaire est surmontée par un orifice de distribution 23 présentant une géométrie cylindrique de révolution autour de l'axe de distribution D, la dimension interne dudit orifice étant égale à la dimension interne de l'ouverture aval 27.In the embodiment shown, the downstream opening 27 of the swirl chamber is surmounted by a distribution orifice 23 having a cylindrical geometry of revolution around the distribution axis D, the internal dimension of said orifice being equal to the internal dimension downstream opening 27.

De façon avantageuse, la dimension axiale de l'orifice de distribution 23 est faible par rapport à sa dimension interne, de sorte à ne pas perturber la convergence de la nappe tourbillonnante. En particulier, la dimension axiale de l'orifice de distribution 23 peut être inférieure à 50% de sa dimension interne.Advantageously, the axial dimension of the dispensing orifice 23 is small compared to its internal dimension, so as not to disturb the convergence of the swirling sheet. In particular, the axial dimension of the dispensing orifice 23 can be less than 50% of its internal dimension.

En variante non représentée, l'ouverture aval 27 de la chambre tourbillonnaire 22 peut former orifice de distribution 23.In a variant not shown, the downstream opening 27 of the swirl chamber 22 can form a dispensing orifice 23.

La réalisation de l'aérosol est particulièrement satisfaisante lorsque la dimension interne de l'ouverture aval 27 est faible relativement à la dimension interne de l'extrémité amont 26, de sorte que l'impaction de la nappe soit réalisée au plus près de l'orifice de distribution 23. En particulier, la dimension interne de l'ouverture aval 27 peut être inférieure à 50% de la dimension interne de l'extrémité amont 26, plus précisément en étant comprise entre 20% et 40% de ladite dimension interne.The aerosol is particularly satisfactory when the internal dimension of the downstream opening 27 is small relative to the internal dimension of the upstream end 26, so that the impact of the sheet is carried out as close as possible to the distribution orifice 23. In particular, the internal dimension of the downstream opening 27 can be less than 50% of the internal dimension of the upstream end 26, more precisely by being between 20% and 40% of said internal dimension.

La dimension axiale de la chambre tourbillonnaire 22 est relativement importante, notamment de l'ordre ou supérieure à la dimension interne de l'extrémité amont 26, de sorte à permettre l'établissement de la nappe tourbillonnante le long de la surface latérale 25 de ladite chambre tourbillonnaire et à conférer une convergence progressive. La dimension axiale de la chambre tourbillonnaire 22 est au moins égale à 80% de la dimension interne de l'extrémité amont 26, plus précisément en étant comprise entre 90% et 200% de ladite dimension interne.The axial dimension of the vortex chamber 22 is relatively large, in particular of the order or greater than the internal dimension of the upstream end 26, so as to allow the establishment of the swirling sheet along the lateral surface 25 of said vortex chamber and to impart progressive convergence. The axial dimension of the vortex chamber 22 is at least equal to 80% of the internal dimension of the upstream end 26, more precisely being between 90% and 200% of said internal dimension.

Selon une réalisation particulière en relation avec un produit dont la pression de distribution est comprise entre 5 et 7 bars, la dimension interne de l'extrémité amont 26 est de 0,6 mm, la dimension interne de l'extrémité aval 27 est inférieure ou égale à 0,24 mm en étant notamment comprise entre 0,15 mm et 0,24 mm, la dimension axiale de la chambre tourbillonnaire 22 est au moins égale 0,55 mm, la dimension axiale de l'orifice de distribution 23 est inférieure à 0,10 mm.According to a particular embodiment in relation to a product whose distribution pressure is between 5 and 7 bars, the internal dimension of the upstream end 26 is 0.6 mm, the internal dimension of the downstream end 27 is less than or equal to 0.24 mm, being in particular between 0.15 mm and 0.24 mm, the axial dimension of the vortex chamber 22 is at least equal to 0.55 mm, the axial dimension of the dispensing orifice 23 is less at 0.10 mm.

Claims (16)

  1. Push-button for a dispensing system for a product under pressure, said push-button comprising a body (1) having a well (3) for mounting on a feed tube (4) for the product under pressure and a housing (10) in communication with said well, said housing being provided with an anvil (11) around which a spray nozzle (12) is mounted in such a way as to form a dispensing path for the product between said housing and a vortex unit comprising a vortex chamber (22) provided with a dispensing orifice (23) as well as with at least one supply channel (24) of said chamber, said vortex chamber is delimited by a lateral surface (25) having a tapered geometry in relation to which the supply channel or channels (24) extend in a transversal plane, said lateral surface converging from an upstream end (26) towards a downstream opening (27) for supplying the dispensing orifice (23), said dispensing orifice having an outlet dimension which is equal to the internal dimension of said downstream opening, said push-button being characterised in that the downstream end of the supply channel or channels (24) exits tangentially in the upstream end (26), the axial dimension of the vortex chamber (22) being at least equal to 80% of the internal dimension of the upstream end (26).
  2. Push-button according to claim 1, characterised in that the lateral surface (25) has a tapered geometry of revolution around a dispensing axis (D).
  3. Push-button according to claim 1 or 2, characterised in that the upstream end (26) has a cylindrical geometry of revolution wherein the downstream end of the supply channels (24) exits tangentially.
  4. Push-button according to any one of claims 1 to 3, characterised in that the internal dimension of the downstream opening (27) is less than 50% of the internal dimension of the upstream end (26).
  5. Push-button according to claim 4, characterised in that the internal dimension of the downstream opening (27) is between 20% and 40% of the internal dimension of the upstream end (26).
  6. Push-button according to any one of claims 1 to 5, characterised in that the internal dimension of the downstream end (27) is less than or equal to 0.24mm.
  7. Push-button according to any one of claims 1 to 6, characterised in that the axial dimension of the vortex chamber (22) is between 90% and 200% of the internal dimension of the upstream end (26).
  8. Push-button according to any one of claims 1 to 7, characterised in that the downstream opening (27) of the vortex chamber (22) is surmounted by a dispensing orifice (23), said dispensing orifice having a cylindrical geometry of which the internal dimension is equal to the internal dimension of the downstream opening (27).
  9. Push-button according to claim 8, characterised in that the axial dimension of the dispensing orifice (23) is less than 50% of the internal dimension of said orifice.
  10. Push-button according to any one of claims 1 to 9, characterised in that the downstream end of the supply channel (24) or all of the downstream ends of each of the supply channels (24) forms a supply section of the vortex chamber (22), the surface of said section being less than 10% of the interior surface of the upstream end (26).
  11. Push-button according to claim 10, characterised in that the surface area of the supply section of the vortex chamber (22) is between 0.01 mm2 and 0.03mm2.
  12. Push-button according to any one of claims 1 to 11, characterised in that the supply channel or channels (24) are delimited between an exterior wall (28) and an interior wall (29), the exterior wall (28) being tangential to the upstream end (26) and the interior wall (29) being offset from it by a distance less than 30% of the internal dimension of the upstream end (26).
  13. Push-button according to any one of claims 1 to 12, characterised in that the vortex unit has at least two supply channels (24) of the vortex chamber (22), said channels being arranged symmetrically in relation to the dispensing axis (D).
  14. Push-button according to any one of claims 1 to 13, characterised in that the nozzle (12) has a proximal wall (15) wherein is formed a print of the vortex unit and the anvil (11) has a distal wall (17) on which the proximal wall (15) of the nozzle (12) presses against to delimit said vortex unit between them.
  15. Push-button according to any one of claims 1 to 14, characterised in that the dispensing path has an upstream annular conduit (30) and a downstream annular conduit (21), said annular conduits being in communication by way of at least one axial conduit (18), the supply channels (24) communicating with said downstream annular conduit.
  16. System for dispensing a product under pressure, comprising a system for sampling (6) provided with a feed tube (4) for the product under pressure on which the well (3) of a push-button according to any one of claims 1 to 15 is mounted to permit spraying of the product.
EP10781946.8A 2009-11-06 2010-11-02 Pushbutton for a system for dispensing a pressurized substance Active EP2496361B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0905366A FR2952360B1 (en) 2009-11-06 2009-11-06 PUSH BUTTON FOR A SYSTEM FOR DISTRIBUTING A PRESSURIZED PRODUCT
PCT/FR2010/000726 WO2011055036A1 (en) 2009-11-06 2010-11-02 Pushbutton for a system for dispensing a pressurized substance

Publications (3)

Publication Number Publication Date
EP2496361A1 EP2496361A1 (en) 2012-09-12
EP2496361B1 EP2496361B1 (en) 2014-01-08
EP2496361B2 true EP2496361B2 (en) 2020-07-08

Family

ID=41718907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10781946.8A Active EP2496361B2 (en) 2009-11-06 2010-11-02 Pushbutton for a system for dispensing a pressurized substance

Country Status (7)

Country Link
US (1) US8807457B2 (en)
EP (1) EP2496361B2 (en)
CN (1) CN102596419B (en)
BR (1) BR112012010556B1 (en)
ES (1) ES2456699T5 (en)
FR (1) FR2952360B1 (en)
WO (1) WO2011055036A1 (en)

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WO2012025735A1 (en) * 2010-08-27 2012-03-01 Reckitt Benckiser Llc Improved foaming compositions and aerosol dispensers
GB201015499D0 (en) * 2010-09-16 2010-10-27 Reckitt Benckiser Inc Improved foaming compositions and aerosol dispensers
US9067221B2 (en) * 2013-03-29 2015-06-30 Bowles Fluidics Corporation Cup-shaped nozzle assembly with integral filter structure
DE202013002283U1 (en) * 2013-03-11 2014-06-12 Neoperl Gmbh Sprayer nozzle for a sanitary water spout and sanitary outlet fitting with a water outlet
CN203635373U (en) * 2013-03-11 2014-06-11 纽珀有限公司 Atomizing nozzle for sanitary water outlet piece and sanitary tap with water outlet piece
US10000330B2 (en) 2014-03-10 2018-06-19 Plastek Industries, Inc. Modular spray cap
EP3177405B1 (en) 2014-08-06 2020-05-06 S.C. Johnson & Son, Inc. Spray inserts
KR101661575B1 (en) * 2014-10-22 2016-10-04 (주)연우 Spray orifice structure
CN104492623B (en) * 2014-11-27 2017-10-13 西安秦泰汽车配件有限公司 A kind of atomizer
FR3032895B1 (en) * 2015-02-24 2019-11-01 Albea Le Treport PUSH BUTTON FOR A PRESSURE DISTRIBUTION SYSTEM OF A PRODUCT
CN204994473U (en) * 2015-08-03 2016-01-27 上海爱农机电设备有限公司 Portable superfine atomizing machine
JP6634255B2 (en) * 2015-09-30 2020-01-22 株式会社吉野工業所 Dispenser with nozzle tip
NL2015694B1 (en) * 2015-10-30 2017-05-31 Dispensing Tech Bv System and method for dispensing a liquid foam, in particular a direct-foam cleaning product.
FR3050125B1 (en) * 2016-04-14 2021-12-17 Albea Le Treport SPRAY NOZZLE, ESPECIALLY FOR A PRESSURE PRODUCT DISTRIBUTION SYSTEM EQUIPPED WITH A PUSH BUTTON, AND DISTRIBUTION SYSTEM INCLUDING SUCH A NOZZLE
US11020758B2 (en) * 2016-07-21 2021-06-01 University Of Louisiana At Lafayette Device and method for fuel injection using swirl burst injector
KR102077606B1 (en) * 2018-03-15 2020-02-17 (주)연우 orifice and spray vessel having the same
FR3104949B1 (en) 2019-12-20 2022-07-08 Oreal DEVICE FOR SPRAYING A TWO-PHASE COMPOSITION COMPRISING AN AQUEOUS PHASE COMPRISING ONE OR MORE POLYOLS AND AN OILY PHASE COMPRISING NON-SILICONE OILS
FR3106765B1 (en) * 2020-02-04 2022-12-30 Eveon NOZZLE FOR SPRAYING LIQUID IN THE FORM OF MIST
FR3137574A1 (en) 2022-07-11 2024-01-12 L'oreal Hair coloring process comprising the application of a composition A comprising two alkoxysilanes, and the application of a composition B comprising a film-forming polymer

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DE372470C (en) † 1923-03-28 Deutsch Englische Quarzschmelz Resistance carrier made of quartz glass
US3083917A (en) † 1956-10-10 1963-04-02 Precision Valve Corp Valve buttons for pressurized dispensers and dies for making the same
US2989251A (en) † 1957-07-05 1961-06-20 Precision Valve Corp Combined valve stem and operating button for pressure packed materials
US3519210A (en) † 1968-04-18 1970-07-07 Pittway Corp Mechanical breakup button
US3942725A (en) † 1975-01-03 1976-03-09 Green Edward Sprayhead for swirling spray
US4923448A (en) † 1988-12-06 1990-05-08 Mark Anderson Syringe with spray nozzle tip

Also Published As

Publication number Publication date
US8807457B2 (en) 2014-08-19
CN102596419A (en) 2012-07-18
ES2456699T5 (en) 2021-05-04
EP2496361A1 (en) 2012-09-12
BR112012010556A2 (en) 2016-03-22
BR112012010556B1 (en) 2020-11-17
CN102596419B (en) 2016-06-08
EP2496361B1 (en) 2014-01-08
ES2456699T3 (en) 2014-04-23
WO2011055036A1 (en) 2011-05-12
US20120217322A1 (en) 2012-08-30
FR2952360B1 (en) 2011-12-09
FR2952360A1 (en) 2011-05-13

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