EP0709305B1 - Dispensing valve and dispenser provided with this valve - Google Patents

Dispensing valve and dispenser provided with this valve Download PDF

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Publication number
EP0709305B1
EP0709305B1 EP95402039A EP95402039A EP0709305B1 EP 0709305 B1 EP0709305 B1 EP 0709305B1 EP 95402039 A EP95402039 A EP 95402039A EP 95402039 A EP95402039 A EP 95402039A EP 0709305 B1 EP0709305 B1 EP 0709305B1
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EP
European Patent Office
Prior art keywords
valve
nozzle
compartment
nozzle stem
dispensing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP95402039A
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German (de)
French (fr)
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EP0709305A1 (en
Inventor
Jean-Pierre Yquel
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LOreal SA
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LOreal SA
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Publication date
Priority to FR9411741A priority Critical patent/FR2725182B1/en
Priority to FR9411741 priority
Application filed by LOreal SA filed Critical LOreal SA
Publication of EP0709305A1 publication Critical patent/EP0709305A1/en
Application granted granted Critical
Publication of EP0709305B1 publication Critical patent/EP0709305B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers 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
    • B65D83/34Cleaning or preventing clogging of the discharge passage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02Spray pistols; Apparatus for discharge
    • B05B7/12Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1209Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02Spray pistols; Apparatus for discharge
    • B05B7/12Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1209Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
    • B05B7/1245A gas valve being opened before a liquid valve
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02Spray pistols; Apparatus for discharge
    • B05B7/04Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0483Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber

Description

  • La présente invention se rapporte à une valve de distribution pour la distribution d'un produit à l'aide d'un gaz propulseur, ou un mélange de gaz propulseurs sous pression, ainsi qu'à un distributeur équipé de cette valve. Cette valve est destinée à équiper un distributeur de produit liquide, pâteux ou pulvérulent, permettant à l'utilisateur la distribution du produit sous forme de fines gouttelettes, de particules ou de mousse. Plus particulièrement, cette valve est adaptée à la distribution de compositions risquant de boucher, par séchage, un système de distribution conventionnel. Parmi les compositions qui peuvent être distribuées à l'aide de cette valve, on peut citer, à titre d'exemples, les peintures, les colles liquides, les laques et mousses capillaires, les mousses à raser....The present invention relates to a dispensing valve for dispensing a product using a propellant gas, or a mixture of propellant gases under pressure, as well as to a dispenser equipped with this valve. This valve is intended to equip a liquid, pasty or pulverulent product distributor, allowing the user to distribute the product in the form of fine droplets, particles or foam. More particularly, this valve is suitable for dispensing compositions which risk clogging, by drying, a conventional dispensing system. Among the compositions which can be dispensed using this valve, mention may be made, by way of examples, of paints, liquid adhesives, hairsprays and hairs, shaving foams, etc.
  • Par le document GB-A-2 209 805, on connaît une valve de distribution pour la distribution d'un liquide sous pression, comprenant un corps cylindrique dans la paroi latérale duquel débouche d'une part, un canal d'aspiration du produit, et d'autre part, un orifice d'alimentation en gaz propulseur additionnel. Le canal d'aspiration de produit est disposé axialement à une hauteur inférieure à la hauteur de l'orifice d'alimentation en gaz propulseur. L'orifice d'alimentation en gaz propulseur communique en permanence avec une chambre de mélange dans laquelle le gaz et le produit se rencontrent. Un gicleur muni d'un canal central d'éjection, monté coulissant axialement dans le corps de valve est pourvu d'un joint d'étanchéité interdisant, en position de repos, toute communication entre le canal d'aspiration de produit et l'alimentation en gaz propulseur. Lorsque le gicleur est enfoncé partiellement à l'encontre de moyens de rappel, un flux de propulseur est envoyé au travers du canal d'éjection, mais l'accès du produit est bouché par le joint d'étanchéité. Lorsque le gicleur est actionné à fond, le joint d'étanchéité est déplacé en dessous de la hauteur du canal d'aspiration, permettant ainsi la distribution d'un mélange produit/gaz propulseur.Document GB-A-2 209 805 discloses a dispensing valve for dispensing a pressurized liquid, comprising a cylindrical body in the side wall which opens on the one hand, a product suction channel, and on the other hand, an additional propellant gas supply orifice. The product suction channel is arranged axially at a height less than the height of the propellant gas supply orifice. The propellant gas supply port permanently communicates with a mixing chamber in which the gas and the product meet. A nozzle fitted with a central ejection channel, slidably mounted axially in the valve body is provided with a seal preventing, in the rest position, any communication between the product suction channel and the supply. in propellant gas. When the nozzle is partially pressed against return means, a propellant flow is sent through the ejection channel, but the access of the product is blocked by the seal. When the nozzle is fully actuated, the seal is moved below the height of the suction channel, thus allowing the distribution of a product / propellant mixture.
  • Selon le document EP-A-0 548 350, on connaît un distributeur de produit liquide distribué au moyen d'un gaz propulseur, comprenant un réservoir contenant le liquide à distribuer et le gaz propulseur, équipé d'une valve de distribution, la valve étant fixée sur le récipient par une coupelle. Cette valve fait l'object du préamble de la revendication 1. Elle comporte un corps de forme cylindrique définissant une chambre comprenant un tube plongeur pour l'aspiration du produit liquide. Dans ce corps est monté, à coulissement, un gicleur ayant une première et une deuxième portions cylindriques définissant une butée annulaire, ce gicleur étant destiné à recevoir une tête de distribution. Un canal axial d'éjection est ménagé dans la première portion du gicleur pour mettre en communication l'extérieur du gicleur avec l'intérieur du corps de valve va un orifice traversant la paroi du gicleur. Le gicleur est mobile dans l'ouverture d'un premier joint fixe placé entre le corps et la coupelle, dont l'épaisseur est supérieure à la section de l'orifice. Le gicleur est sollicité par des moyens élastiques de rappel vers une première position de repos dans laquelle la butée coopère avec le joint et dans laquelle l'orifice débouche dans l'épaisseur du joint. Un orifice de prise de gaz additionnel est prévu dans le corps de valve pour mettre en communication la chambre avec le volume du récipient dans lequel se trouve le gaz propulseur sous pression, de sorte qu'un mélange de liquide et de gaz propulseur se forme dans la chambre et est amené vers une buse de distribution. Un second joint annulaire mobile est disposé autour de la deuxième portion du gicleur obturant, en position de repos, l'orifice de prise de gaz additionnel.According to document EP-A-0 548 350, there is known a liquid product dispenser dispensed by means of a propellant gas, comprising a reservoir containing the liquid to be dispensed and the propellant gas, equipped with a dispensing valve, the valve being fixed on the container by a cup. This valve is the subject of the preamble of claim 1. It comprises a cylindrical body defining a chamber comprising a dip tube for the suction of the liquid product. In this body is mounted, slidingly, a nozzle having first and second portions cylindrical defining an annular stop, this nozzle being intended to receive a dispensing head. An axial ejection channel is provided in the first portion of the nozzle for communicating the outside of the nozzle with the inside of the valve body going through an orifice passing through the wall of the nozzle. The nozzle is movable in the opening of a first fixed seal placed between the body and the cup, the thickness of which is greater than the section of the orifice. The nozzle is urged by elastic return means towards a first rest position in which the stop cooperates with the seal and in which the orifice opens into the thickness of the seal. An additional gas intake opening is provided in the valve body for communicating the chamber with the volume of the container in which the propellant is under pressure, so that a mixture of liquid and propellant is formed in the chamber and is brought to a dispensing nozzle. A second movable annular seal is arranged around the second portion of the nozzle closing, in the rest position, the additional gas intake orifice.
  • Ce distributeur présente un fonctionnement satisfaisant, lorsque le produit à distribuer est relativement liquide. Cependant, lorsque le produit à distribuer est une composition à base de matières solubilisées dans un solvant, telle qu'une laque pour cheveux ou une peinture, après chaque distribution une quantité de produit reste dans le système de distribution, où le solvant s'évapore. Au bout de plusieurs distributions, le résidu sec résultant de cette évaporation finit par boucher le système de distribution, notamment le gicleur ou la buse de distribution.This dispenser operates satisfactorily when the product to be dispensed is relatively liquid. However, when the product to be dispensed is a composition based on materials dissolved in a solvent, such as a hair spray or a paint, after each dispensing, a quantity of product remains in the dispensing system, where the solvent evaporates. . After several distributions, the dry residue resulting from this evaporation ends up clogging the distribution system, in particular the nozzle or the distribution nozzle.
  • La présente invention vise à remédier à cet inconvénient en proposant une valve, capable de purger automatiquement le système de distribution, avant et après chaque distribution d'une dose de produit. Cette purge est effectuée en envoyant, avant et après chaque distribution, un jet de gaz propulseur chassant tout résidu de produit dans le système de distribution.The present invention aims to remedy this drawback by proposing a valve, capable of automatically purging the distribution system, before and after each distribution of a dose of product. This purge is carried out by sending, before and after each distribution, a jet of propellant gas expelling any residue of product in the distribution system.
  • Ainsi, l'invention se rapporte à une valve de distribution pour la distribution d'un produit à l'aide d'un gaz propulseur sous pression, comportant un corps définissant une chambre comprenant un premier orifice d'aspiration du produit, corps dans lequel est monté, à coulissement, un gicleur ayant une première et une deuxième portions cylindriques définissant une butée annulaire ; un canal d'éjection ménagé dans la première portion pour mettre en communication l'extérieur du gicleur avec l'intérieur du corps de valve, le gicleur étant mobile dans l'ouverture d'un joint d'étanchéité fixe monté au sommet du corps de valve et dont l'épaisseur est supérieure à la section du canal, le gicleur étant sollicité par des moyens élastiques de rappel vers une première position de repos dans laquelle la butée coopère avec le joint fixe et dans laquelle le canal débouche dans l'épaisseur du joint ; un second orifice tenant lieu de prise de gaz additionnel prévu dans le corps de valve destiné à être alimenté en gaz propulseur ; un élément annulaire mobile solidaire de la deuxième portion obturant, en position de repos, le second orifice et séparant la chambre en un premier et un deuxième compartiments, l'intérieur du corps de valve et le gicleur étant agencés de sorte que, lors de l'enfoncement partiel du gicleur dans une seconde position, une communication est établie entre le second orifice et l'extérieur, pour le passage du gaz propulseur vers l'extérieur via le premier compartiment et le canal du gicleur, et de sorte que les premier et deuxième compartiments sont séparés, un moyen de communication temporaire étant prévu à l'intérieur du corps de valve, inopérant dans les première et deuxième positions du gicleur et opérant lors de l'enfoncement maximal du gicleur dans une troisième position, pour mettre en communication les premier et deuxième compartiments et assurer ainsi la distribution d'un mélange de produit et de gaz.Thus, the invention relates to a dispensing valve for dispensing a product using a pressurized propellant, comprising a body defining a chamber comprising a first suction port for the product, body in which is mounted, slidingly, a nozzle having first and second cylindrical portions defining an annular stop; an ejection channel formed in the first portion for communicating the outside of the nozzle with the inside of the valve body, the nozzle being movable in the opening of a fixed seal mounted at the top of the valve body and whose thickness is greater than the section of the channel, the nozzle being urged by elastic return means towards a first rest position in which the stop cooperates with the fixed joint and in which the channel opens into the thickness of the joint; a second orifice taking the place of an additional gas intake provided in the valve body intended to be supplied with propellant gas; a movable annular element integral with the second portion closing, in the rest position, the second orifice and dividing the chamber into first and second compartments, the interior of the valve body and the nozzle being arranged so that, during the partial depression of the nozzle in a second position, a communication is established between the second orifice and the exterior, for the passage of the propellant towards the exterior via the first compartment and the nozzle channel, and so that the first and second compartments are separated, a temporary means of communication being provided inside the valve body, inoperative in the first and second positions of the nozzle and operating during the maximum insertion of the nozzle in a third position, to put in communication the first and second compartments and thus ensure the distribution of a mixture of product and gas.
  • Le produit à distribuer peut être un produit liquide, pâteux ou pulvérulent sous l'action d'un gaz propulseur choisi, avantageusement, parmi les hydrocarbures et chlorofluorocarbures liquéfiables, l'azote, le dioxyde de carbone, l'air comprimé, ou un mélange de ces gaz.The product to be dispensed can be a liquid, pasty or powdery product under the action of a propellant chosen, advantageously, from liquefiable hydrocarbons and chlorofluorocarbons, nitrogen, carbon dioxide, compressed air, or a mixture of these gases.
  • Avantageusement, le premier orifice d'aspiration est relié à un tube plongeur plongeant dans le produit à distribuer. Il est possible, également, de raccorder cet orifice d'aspiration directement à une poche souple, dans laquelle est enfermé le produit.Advantageously, the first suction port is connected to a dip tube immersed in the product to be dispensed. It is also possible to connect this suction port directly to a flexible bag, in which the product is enclosed.
  • Selon l'invention, le moyen de communication temporaire peut être constitué par au moins une gorge longitudinale et/ou circulaire, pratiquée dans une paroi interne du corps de valve, débouchant de part et d'autre du joint annulaire mobile dans les premiers et deuxième compartiments, lorsque le gicleur se trouve dans la troisième position, c'est-à-dire quand le gicleur se trouve dans la position d'enfoncement maximal.According to the invention, the temporary communication means can be constituted by at least one longitudinal and / or circular groove, formed in an internal wall of the valve body, opening on either side of the movable annular seal in the first and second compartments, when the nozzle is in the third position, that is to say when the nozzle is in the maximum insertion position.
  • L'élément annulaire peut être un joint torique rapporté, par exemple en matériau élastomérique. Cet élément annulaire peut se présenter, également, sous forme de bourrelet cylindrique résultant d'un moulage monopièce avec le gicleur.The annular element can be an attached O-ring, for example made of elastomeric material. This annular element can also be in the form of a cylindrical bead resulting from a one-piece molding with the nozzle.
  • Avantageusement, les moyens élastiques de rappel sont constitués par un ressort hélicoïdal.Advantageously, the elastic return means consist of a helical spring.
  • Par les dispositions qui viennent d'être décrites, on obtient une valve qui, avant est après chaque distribution d'une dose de produit, purge le système de distribution de la valve, ce système comprenant successivement l'orifice de prise de gaz additionnel, le premier compartiment de la valve, le canal d'éjection du gicleur, ainsi que les conduits d'un bouton-poussoir dont est équipé, avantageusement, cette valve pour son actionnement et la distribution du produit.By the arrangements which have just been described, a valve is obtained which, before and after each dispensing of a dose of product, purges the dispensing system of the valve, this system successively comprising the orifice for taking additional gas, the first valve compartment, the nozzle ejection channel, as well as the conduits of a push button with which this valve is advantageously equipped for its actuation and the distribution of the product.
  • Un autre avantage que présente cette valve réside dans le fait qu'après la distribution d'une dose de produit, il y a absence de communication entre l'orifice de prise de gaz propulseur additionnel et l'orifice d'aspiration. Ce gaz propulseur ne peut donc pas pénétrer dans le deuxième compartiment ni dans le tube plongeur ou dans la poche contenant le produit à l'inverse d'une valve de prise de gaz additionnel classique. Pour une valve classique, avant chaque distribution de produit, il s'effectue l'éjection d'une quantité importante de gaz, ce qui est préjudiciable pour la vidange complète du réservoir, en particulier si la distribution du produit est fréquemment interrompue. Le problème du gaspillage de gaz propulseur se pose, en particulier, si le gaz propulseur choisi est un gaz non liquéfiable, tel que l'air comprimé. En effet, il est connu que la distribution d'un produit à l'aide d'un gaz non liquéfiable nécessite, soit l'utilisation d'un récipient de volume considérable pour assurer le stockage d'un volume de gaz suffisant pour la vidange complète du réservoir, soit l'utilisation d'un système de recharge en gaz comprimé, ce qui entraîne un équipement onéreux. Ainsi, la valve de l'invention, du fait de la consommation en gaz réduite, permet d'équiper un récipient de volume réduit, sans qu'il soit nécessaire de recharger en gaz comprimé avant le vidange complet du réservoir.Another advantage of this valve lies in the fact that after dispensing a dose of product, there is no communication between the additional propellant gas intake orifice and the suction orifice. This gas propellant can therefore not enter the second compartment or the dip tube or the pocket containing the product unlike a conventional additional gas valve. For a conventional valve, before each product distribution, a large amount of gas is ejected, which is detrimental for the complete emptying of the tank, in particular if the product distribution is frequently interrupted. The problem of wasting propellant gas arises, in particular, if the propellant gas chosen is a non-liquefiable gas, such as compressed air. Indeed, it is known that the distribution of a product using a non-liquefiable gas requires either the use of a container of considerable volume to ensure the storage of a sufficient volume of gas for emptying full of the tank, i.e. the use of a compressed gas recharging system, which results in expensive equipment. Thus, the valve of the invention, due to the reduced gas consumption, makes it possible to equip a container of reduced volume, without it being necessary to recharge with compressed gas before the complete emptying of the tank.
  • L'invention se rapporte également à un distributeur pour la distribution d'un produit à l'aide d'un gaz propulseur sous pression comportant un réservoir de produit, fermé par une coupelle de fixation portant une valve équipée d'un bouton-poussoir pour son actionnement, muni d'une buse de distribution, cette valve étant telle que définiè précédemment.The invention also relates to a dispenser for dispensing a product using a pressurized propellant comprising a product reservoir, closed by a fixing cup carrying a valve fitted with a push button for its actuation, provided with a dispensing nozzle, this valve being as defined above.
  • Avantageusement, le récipient distributeur est équipé d'une valve comportant un moyen de communication temporaire, constitué par au moins une gorge longitudinale et/ou circulaire, pratiquée dans une paroi interne du corps de valve, débouchant de part et d'autre du joint annulaire mobile dans les premiers et deuxième compartiments, lorsque le gicleur se trouve dans la troisième position.Advantageously, the dispensing container is equipped with a valve comprising a temporary communication means, constituted by at least one longitudinal and / or circular groove, formed in an internal wall of the valve body, opening out on either side of the annular seal. movable in the first and second compartments, when the nozzle is in the third position.
  • De préférence, les moyens élastiques de rappel sont constitués par un ressort hélicoïdal, réalisé avantageusement en métal.Preferably, the elastic return means consist of a helical spring, advantageously made of metal.
  • Le joint fixe est, avantageusement, placé au sommet du corps de valve, entre la chambre de valve et sa coupelle de fixation.The fixed seal is advantageously placed at the top of the valve body, between the valve chamber and its fixing cup.
  • L'invention consiste, mis à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions, dont il sera plus explicitement question ci-après, à propos d'exemples de réalisations, décrits en référence aux dessins annexés, mais qui ne sont nullement limitatifs.The invention consists, apart from the arrangements set out above, of a certain number of other arrangements, which will be more explicitly discussed below, with reference to exemplary embodiments, described with reference to the appended drawings, but which are in no way limiting.
  • La figure 1 est une vue en coupe partielle d'un récipient distributeur, muni d'une valve de distribution conforme à l'invention, en position de repos.Figure 1 is a partial sectional view of a dispensing container, provided with a dispensing valve according to the invention, in the rest position.
  • La figure 2 montre une coupe de la valve de la figure 1, en position de purge.Figure 2 shows a section through the valve of Figure 1 in the purge position.
  • La figure 3 est une coupe de la valve de la figure 1, en position de distribution.Figure 3 is a section of the valve of Figure 1, in the dispensing position.
  • La figure 4 montre une variante du distributeur de la figure 1, le joint et le gicleur étant réalisé monopièce.Figure 4 shows a variant of the dispenser of Figure 1, the seal and the nozzle being made one piece.
  • En se référant aux figures 1 à 3 annexées, on a désigné par la référence 1 un récipient coiffé d'une coupelle 2.With reference to the appended FIGS. 1 to 3, a container topped with a cup 2 has been designated by the reference 1.
  • Selon la figure 1, le récipient distributeur 1 conforme à l'invention est constitué d'une enveloppe cylindrique 20 ayant un fond à sa partie inférieure, non représenté, et fermé à sa partie supérieure par une coupelle 2. Le récipient 1 est rempli d'un produit à distribuer de consistance liquide, pâteuse ou pulvérulente, notamment liquide et d'un gaz propulseur ou d'un mélange de gaz, comme les gaz liquéfiables et/ou des gaz comprimés, notamment de l'air comprimé. Ce produit peut être une laque capillaire, une peinture, une composition moussante, etc.According to Figure 1, the dispensing container 1 according to the invention consists of a cylindrical envelope 20 having a bottom at its lower part, not shown, and closed at its upper part by a cup 2. The container 1 is filled with a product to be dispensed of liquid, pasty or pulverulent consistency, in particular liquid and of a propellant gas or of a mixture of gases, such as liquefiable gases and / or compressed gases, in particular compressed air. This product can be a hairspray, a paint, a foaming composition, etc.
  • Le récipient 1 est surmonté d'une valve de distribution 3 comprenant un corps 4 de forme générale cylindrique, et un gicleur 7 servant d'organe de manoeuvre de la valve. Le corps de valve présente, à sa partie supérieure, un plateau circulaire 3a, prolongé par une jupe 3b cylindrique, à l'intérieur de laquelle est disposée un premier joint fixe 12 élastomérique en forme de rondelle. Le corps 4 de valve comporte un fond 3c, définissant ainsi une chambre 5 ; ce fond comporte un orifice d'aspiration de produit 6 se prolongeant par un tube plongeur 16 plongeant dans le produit. Ce tube plongeur n'est pas nécessaire, si le liquide est enfermé dans une poche souple (non représente), raccordée au corps 4 de valve. Dans ce cas, le fond 3c comporte avantageusement des moyens de raccordement de la poche. Le fond 3c peut faire partie du corps 4 de valve, ou constituer une pièce distincte, fixé par encliquetage ou collage au corps 4 de valve.The container 1 is surmounted by a dispensing valve 3 comprising a body 4 of generally cylindrical shape, and a nozzle 7 serving as a member for operating the valve. The valve body has, at its upper part, a circular plate 3a, extended by a cylindrical skirt 3b, inside which is arranged a first elastomeric fixed seal 12 in the form of a washer. The valve body 4 has a bottom 3c, thus defining a chamber 5; this bottom has a product suction orifice 6 extending by a dip tube 16 plunging into the product. This dip tube is not necessary, if the liquid is enclosed in a flexible pocket (not shown), connected to the valve body 4. In this case, the bottom 3c advantageously comprises means for connecting the pocket. The bottom 3c can be part of the valve body 4, or constitute a separate part, fixed by snap-fastening or gluing to the valve body 4.
  • Sur la jupe 3b du corps de valve est fixée, par sertissage ou dudgeonnage, une coupelle de fixation 2, par exemple en métal, immobilisant le joint fixe 12. La paroi transversale de la coupelle 2 comporte un orifice circulaire central 2a. Le gicleur 7 comprend deux portions cylindriques coaxiales 8 et 9, définissant une butée annulaire 10. La portion 8 a un diamètre légèrement inférieur à celui de l'orifice 2a de la coupelle et traverse le joint fixe 12 et l'orifice 2a, de sorte que son extrémité émergeante 8a peut recevoir un bouton-poussoir 17 muni d'un canal de sortie 19 coudé qui conduit vers une buse de distribution 18. En outre, la portion 8 du gicleur 7 est muni d'un canal d'éjection 11 comprenant une partie axiale borgne 11a qui se raccorde à une partie radiale 11b traversant la paroi de la portion 8. Cette partie radiale 11b est située, en position de repos de la valve, dans l'épaisseur du joint fixe 12 et obturé par celui-ci.On the skirt 3b of the valve body is fixed, by crimping or swaging, a fixing cup 2, for example made of metal, immobilizing the fixed seal 12. The transverse wall of the cup 2 has a central circular orifice 2a. The nozzle 7 comprises two coaxial cylindrical portions 8 and 9, defining an annular abutment 10. The portion 8 has a diameter slightly smaller than that of the orifice 2a of the cup and passes through the fixed seal 12 and the orifice 2a, so that its emerging end 8a can receive a push button 17 provided with an angled outlet channel 19 which leads to a dispensing nozzle 18. In addition, the portion 8 of the nozzle 7 is provided with an ejection channel 11 comprising a blind axial part 11a which is connected to a radial part 11b passing through the wall of the portion 8. This radial part 11b is located, in the rest position of the valve, in the thickness of the fixed seal 12 and closed by it .
  • La portion 9 du gicleur 7 s'étend dans la chambre 5 du corps de valve et son diamètre extérieur est inférieur à celui de la paroi intérieure du corps 4 de valve. Cette portion 9 est munie d'un second joint annulaire mobile 15, de sorte que le gicleur 7 est capable de coulisser, de façon étanche, dans le corps 4 de valve, séparant la chambre 5 en deux compartiments A et B. La portion 9 comporte un fond 9a, en appui élastique contre un ressort hélicoïdal 13 disposé entre celui-ci et le fond 3c du corps 4 de valve.The portion 9 of the nozzle 7 extends into the chamber 5 of the valve body and its outside diameter is less than that of the interior wall of the valve body 4. This portion 9 is provided with a second movable annular seal 15, so that the nozzle 7 is capable of sliding, in leaktight manner, in the valve body 4, separating the chamber 5 into two compartments A and B. The portion 9 comprises a bottom 9a, in elastic support against a helical spring 13 disposed between the latter and the bottom 3c of the valve body 4.
  • Le second joint annulaire mobile 15 est un joint torique, réalisé, de préférence en un matériau élastomérique. Cependant, il est possible de réaliser ce joint par surinjection d'une matière adaptée, par exemple en un matériau élastomérique, sur le pourtour de la portion 9 du gicleur 7.The second movable annular seal 15 is an O-ring, preferably made of an elastomeric material. However, it is possible to make this seal by over-injection of a suitable material, for example an elastomeric material, around the periphery of the portion 9 of the nozzle 7.
  • Un petit orifice 14 est ménagé dans la paroi du corps 4 de valve susceptible de faire communiquer le volume supérieur du réservoir avec la chambre 5 de la valve. Cet orifice 14 est situé de sorte qu'en position de repos du gicleur 7, le second joint 15 porté par ce dernier, est apte à obturer l'orifice 14.A small orifice 14 is formed in the wall of the valve body 4 capable of making the upper volume of the reservoir communicate with the chamber 5 of the valve. This orifice 14 is located so that, in the rest position of the nozzle 7, the second seal 15 carried by the latter, is capable of closing the orifice 14.
  • Le corps 4 de valve comporte au moins une gorge longitudinale et/ou circulaire 31, dont le rôle sera explicité plus loin lors de la description du fonctionnement de la valve, gorge, dont la longueur est supérieure à l'épaisseur du second joint 15, et qui est située à un niveau inférieur à celui de l'orifice de prise de gaz additionnel 14, si cet orifice est dans le prolongement de la gorge longitudinale 31, ou à un niveau au plus égal à celui de l'orifice 14, si cette gorge longitudinale 31 est décalée d'un certain angle par rapport à l'orifice 14.The valve body 4 comprises at least one longitudinal and / or circular groove 31, the role of which will be explained later on in the description of the operation of the valve, groove, the length of which is greater than the thickness of the second seal 15, and which is situated at a level lower than that of the additional gas intake orifice 14, if this orifice is in the extension of the longitudinal groove 31, or at a level at most equal to that of the orifice 14, if this longitudinal groove 31 is offset by a certain angle relative to the orifice 14.
  • Le fonctionnement du récipient distributeur 1, conforme à l'invention, est le suivant : En position de repos, la valve 3 est fermée, c'est-à-dire que l'orifice de prise de gaz additionnel 14 est bouché par le second joint mobile 15 et le canal 11b est obturé par le premier joint 12. Le second joint mobile 15 assure également la séparation étanche des compartiments A et B, de sorte que le liquide qui se trouve dans le compartiment B, ne peut pas passer dans le compartiment A (figure 1).The operation of the dispensing container 1, according to the invention, is as follows: In the rest position, the valve 3 is closed, that is to say that the additional gas intake orifice 14 is blocked by the second movable seal 15 and the channel 11b is closed by the first seal 12. The second movable seal 15 also ensures the sealed separation of the compartments A and B, so that the liquid which is in the compartment B, cannot pass into the compartment A (figure 1).
  • Pour distribuer une dose de produit, l'utilisateur appuie sur le bouton-poussoir 17, provoquant la descente du gicleur 7. Celui-ci occupe une position intermédiaire, comme montré à la figure 2, dans laquelle le second joint mobile 15 libère l'orifice de prise de gaz additionnel 14, tout en assurant la séparation des compartiments A et B. Dans cette position, le canal 11b du gicleur se situe en dessous du premier joint 12 et une quantité de gaz traverse l'orifice 14, s'échappant par la buse de distribution 18, via le compartiment A, le canal 11b, le canal borgne 11 et le canal coudé 19 dans le bouton poussoir 17.To dispense a dose of product, the user presses the push button 17, causing the nozzle to descend 7. The latter occupies an intermediate position, as shown in FIG. 2, in which the second movable seal 15 frees the additional gas intake orifice 14, while ensuring the separation of the compartments A and B. In this position, the nozzle channel 11b is located below the first seal 12 and a quantity of gas passes through the orifice 14 , escaping through the dispensing nozzle 18, via compartment A, the channel 11b, the blind channel 11 and the bent channel 19 in the push button 17.
  • En fin de course qui correspond à la phase de distribution, le gicleur 7 occupe la position présentée à la figure 3. Le second joint mobile 15 se trouve alors au droit de la gorge longitudinale 31, débouchant, de part et d'autre du joint mobile 15 dans les compartiments A et B respectivement. Le liquide contenu dans le réservoir 20, sous la poussée du gaz propulseur, peut alors passer du compartiment B dans le compartiment A, où il se produit un mélange du liquide avec le gaz propulseur. Ce mélange est acheminé vers la buse de distribution 18.At the end of the stroke which corresponds to the dispensing phase, the nozzle 7 occupies the position shown in FIG. 3. The second movable seal 15 is then located in line with the longitudinal groove 31, opening out on either side of the seal mobile 15 in compartments A and B respectively. The liquid contained in the reservoir 20, under the thrust of the propellant gas, can then pass from compartment B into compartment A, where there is a mixing of the liquid with the propellant gas. This mixture is conveyed to the dispensing nozzle 18.
  • Lorsque l'utilisateur cesse la distribution, avant d'atteindre la position de repos, le gicleur 7 passe par la position intermédiaire décrite ci-dessus en référence à la figure 2. Il en résulte une distribution de gaz uniquement qui expulse tout produit se trouvant dans le système de distribution, entre l'orifice de prise de gaz additionnel 14 et la buse de distribution 18. Ainsi les risques de séchage du produit dans le système de distribution et de son bouchage par des résidus secs résultants, sont considérablement réduits.When the user stops dispensing, before reaching the rest position, the nozzle 7 passes through the intermediate position described above with reference to FIG. 2. This results in a distribution of gas only which expels any product found in the distribution system, between the additional gas intake orifice 14 and the distribution nozzle 18. Thus the risks of drying of the product in the distribution system and of its clogging by resulting dry residues, are considerably reduced.
  • La figure 4 montre une variante de la valve de la figure 1, suivant laquelle le joint torique 15 de la figure 1 a été remplacé par un joint en forme de bourrelet cylindrique 15a, venu de moulage en une seule pièce avec le gicleur 7. Ce bourrelet 15a peut être obtenu par surinjection d'une matière adaptée, par exemple d'une matière élastomérique, sur le pourtour de la portion 9 du gicleur 7. Le fonctionnement de cette valve est identique à celui décrit en référence à la valve conforme aux figures 1 à 3.FIG. 4 shows a variant of the valve of FIG. 1, according to which the O-ring 15 of FIG. 1 has been replaced by a seal in the form of a cylindrical bead 15a, molded in one piece with the nozzle 7. This bead 15a can be obtained by superinjection of a suitable material, for example an elastomeric material, on the periphery of the portion 9 of the nozzle 7. The operation of this valve is identical to that described with reference to the valve according to the figures 1 to 3.

Claims (6)

  1. Valve for dispensing a product with the aid of a propellent gas under pressure, including a body (4) defining a chamber (5) comprising a first orifice (6) for taking in the said product, in which body (4) is slidingly mounted a nozzle stem element (7) having a first cylindrical portion (8) and a second cylindrical portion (9) which define an annular stop (10); an ejection passageway (11a, 11b) made in the first portion (8) in order to place the outside of the nozzle stem element (7) in communication with the inside of the body (4) of the valve (3), it being possible for the nozzle stem element (7) to move inside the opening of a stationary seal (12) fitted at the top of the valve body (4) and the thickness of which is greater than the cross-section of the passageway (11a, 11b), the nozzle stem element being urged by elastic return means (13) towards a first position of rest in which the stop (10) interacts with the stationary seal (12) and in which the passageway (11a, 11b) opens in the thickness of the seal (12); a second orifice acting as an additional gas intake (14) provided in the body (4) of the valve (3) and intended to be fed with propellent gas; a moving annular element (15) integral with the second portion (9) and, in the position of rest, closing off the second orifice (14) and dividing the chamber (5) into a first compartment (A) and a second compartment (B), characterized in that the inside of the valve body (4) and the nozzle stem element (7) are arranged so that, when the nozzle stem element (7) is partially depressed into a second position, a communication is set up between the second orifice (14) and the outside for the passage of propellent gas towards the outside via the first compartment (A) and the passageway (11a, 11b) of the nozzle stem element (7) and so that the first compartment (A) and second compartment (B) are separated; a means (C) of temporary communication being provided inside the body (4) of the valve (3), this means being inoperative in the first and second positions of the nozzle stem element (7) and operative, when the nozzle stem element (7) is depressed to the maximum extent into a third position, in order to place the first compartment (A) and second compartment (B) in communication and thus dispense a mixture of product and of gas.
  2. Valve according to Claim 1, characterized in that the means (C) for temporary communication consists of at least one longitudinal and/or circular groove (31) made in an internal wall of the body (4) of the valve (3) emerging on either side of the moving annular element (15) in the first compartment (A) and second compartment (B) when the nozzle stem element (7) is in the third position.
  3. Valve according to one of Claims 1 and 2, characterized in that the annular element (15) is an O-ring.
  4. Valve according to one of Claims 1 and 2, characterized in that the annular element (15) is a cylindrical bead formed integrally in the moulding of the nozzle stem element (7).
  5. Valve according to one of Claims 1 to 4, characterized in that the elastic return means (13) consist of a helical spring.
  6. Dispenser (1) for dispensing a product with the aid of a propellent gas under pressure including a reservoir (20) of product, closed by a dished fastening part (2) bearing a valve (3) equipped with a push-button (17) for actuating it, provided with a dispensing spray nozzle (18), characterized in that the said valve (3) conforms to any one of the preceding claims.
EP95402039A 1994-09-30 1995-09-08 Dispensing valve and dispenser provided with this valve Expired - Lifetime EP0709305B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9411741A FR2725182B1 (en) 1994-09-30 1994-09-30 Distribution valve and dispenser container equipped with a valve
FR9411741 1994-09-30

Publications (2)

Publication Number Publication Date
EP0709305A1 EP0709305A1 (en) 1996-05-01
EP0709305B1 true EP0709305B1 (en) 1997-10-15

Family

ID=9467476

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EP95402039A Expired - Lifetime EP0709305B1 (en) 1994-09-30 1995-09-08 Dispensing valve and dispenser provided with this valve

Country Status (8)

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US (1) US5695096A (en)
EP (1) EP0709305B1 (en)
JP (1) JP2723487B2 (en)
BR (1) BR9504755A (en)
CA (1) CA2159575C (en)
DE (1) DE69500880T2 (en)
ES (1) ES2109791T3 (en)
FR (1) FR2725182B1 (en)

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Also Published As

Publication number Publication date
JPH08192880A (en) 1996-07-30
FR2725182B1 (en) 1996-11-15
CA2159575C (en) 1999-02-23
CA2159575A1 (en) 1996-03-31
EP0709305A1 (en) 1996-05-01
ES2109791T3 (en) 1998-01-16
BR9504755A (en) 1996-10-15
DE69500880T2 (en) 1998-02-12
FR2725182A1 (en) 1996-04-05
DE69500880D1 (en) 1997-11-20
US5695096A (en) 1997-12-09
JP2723487B2 (en) 1998-03-09

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