EP0931734A1 - Valve for regulating a fluid flow and container equipped with such a valve - Google Patents

Valve for regulating a fluid flow and container equipped with such a valve Download PDF

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Publication number
EP0931734A1
EP0931734A1 EP98403289A EP98403289A EP0931734A1 EP 0931734 A1 EP0931734 A1 EP 0931734A1 EP 98403289 A EP98403289 A EP 98403289A EP 98403289 A EP98403289 A EP 98403289A EP 0931734 A1 EP0931734 A1 EP 0931734A1
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EP
European Patent Office
Prior art keywords
valve
regulation
outlet
product
chamber
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Granted
Application number
EP98403289A
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German (de)
French (fr)
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EP0931734B1 (en
Inventor
Jean-François Benoist
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LOreal SA
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LOreal SA
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    • 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
    • B65D83/44Valves specially adapted therefor; Regulating devices

Definitions

  • the present invention relates to a valve, in particular for an aerosol container, intended to distribute a product, in particular cosmetic, according to a flow substantially constant.
  • the invention is particularly suitable for distribution of deodorants, or styling products, in particular lacquers or foams.
  • the pressure in this part of the valve body is a partial pressure between atmospheric pressure and the pressure inside the container.
  • a pressure depends on the internal pressure of the container, and the pressure losses existing up to the product outlet. Pressure also depends on the product in the container, especially its vapor pressure. So, for each new formula, it is necessary to use a different calibrated spring, which makes the system not very flexible.
  • the means for closing the outlet orifice are not integral with the piston, this which makes the flow regulation obtained less precise.
  • Patent application FR 2 711 973 describes a push button inside which is arranged a regulation system.
  • the disadvantages of such system are mainly of two kinds.
  • the system of regulation occupies a substantial place in the push button, which leaves little freedom in the definition of the feeding of the nozzle outlet or diffusion system and spray mechanism.
  • the means for closing the regulation chamber are, between two uses, in communication with the outside of the container, and therefore with the air, which implies a high risk of "sticking" of the shutter, especially in the case of products with a high resin content.
  • a valve in particular for an aerosol container, comprising inside a valve body: a) a inlet passage in communication with the container and an outlet passage; b) means for, in response to an actuation command, putting the exit passage in communication with the entry passage; c) first elastic return means for biasing the valve in the closed position; and D) means for regulating the output flow of the product, comprising second elastic return means for supplying a set pressure for said regulation means, characterized in that the second means elastic return are arranged in a compartment of the valve body, isolated from the product, the pressure inside said compartment being equal to the atmospheric pressure.
  • the elastic return means being at atmospheric pressure, the setpoint it imposes is constant, whatever the formula, and whatever or the pressure inside the container.
  • the sealing means associated with the regulation system being located inside the valve body, i.e. isolated from the outside in the valve closed position, it does not produces no phenomenon of sticking or fouling of the regulation, which remains reliable over time.
  • the flow regulation means comprise a regulation chamber, arranged between the inlet passage and the passage of outlet, said control chamber having an inlet port and an orifice outlet, shutter means, mounted on said second means elastic return being provided for, depending on the pressure inside the regulation chamber (in reality, inside the part in which circulates the product), modify the degree of opening of the inlet and / or outlet orifice, said second elastic return means being arranged in a regulation chamber compartment, isolated from the product by a piston mobile, in direct communication with the outside, and therefore maintained at atmospheric pressure.
  • the pressure inside the compartment containing the spring tared remains identical to atmospheric pressure.
  • the movable piston is integral with said first means shutter. This contributes to improving the precision of the regulation in the product outlet flow.
  • the sealing means comprise first means for closing the outlet orifice, consisting of a skirt annular carried by the piston and disposed inside the chamber regulation, and whose position relative to the outlet orifice determines the degree opening of the latter.
  • the annular skirt forms a single piece with the piston, obtainable by molding a thermoplastic material, such than a polyolefin, in particular a polyethylene or a polypropylene.
  • the movable piston is slidably mounted inside the regulation chamber.
  • the seal between the compartment containing the spring calibrated and the compartment forming the actual regulation chamber is improved by means of a flexible membrane placed inside the body of the regulation chamber, between the piston and the calibrated spring.
  • a such membrane is overmolded or bi-injected with the body of the chamber regulation. This membrane started the seal between the two compartments of the regulation chamber, without appreciably affecting the pressing force exerted by the second elastic return means on the piston.
  • stop means are provided for, in the event of overpressure inside the regulation chamber, maintain a flow minimum product output. This allows the product contained in the regulation chamber, until the pressure inside the chamber returns to the level set by the second elastic return means, thus avoiding any phenomenon of blockage of the valve.
  • the sealing means may also include second means shutter, integral with the movable piston for, depending on the pressure at inside the regulation chamber, modify the degree of opening of the orifice of the regulation chamber, said first and second means shutter being arranged so that in the closed position of the inlet orifice, the outlet is at least partially open.
  • second means shutter integral with the movable piston for, depending on the pressure at inside the regulation chamber, modify the degree of opening of the orifice of the regulation chamber, said first and second means shutter being arranged so that in the closed position of the inlet orifice, the outlet is at least partially open.
  • the inlet orifice is arranged in the bottom of the regulation chamber, the outlet orifice being located on a wall side of the control chamber, at a distance d from the bottom of the control chamber regulation, an annular lip ensuring sealing between the regulation and the valve body, all around said regulation chamber, said sealing lip being disposed axially between the bottom of the chamber regulator and outlet.
  • ring finger can be obtained molding with the regulation chamber.
  • the outlet passage is formed of a rod valve integral with the regulation chamber, said regulation chamber being mounted on said first elastic return means, said rod valve comprising an emerging part outside the valve body, and forming a outlet channel which can be put in communication with the valve body via a passage passing radially through the valve stem.
  • it can be a "female" type valve intended to receive a hollow hollow rod by the valve actuation mechanism.
  • the radial passage is maintained opposite a seal located in the upper part of the valve body.
  • the sealing means seal the outlet orifice of the regulation chamber, so as to interrupt the dispensing of product. This prevents any spraying or diffusion whose characteristics do not would be unsatisfactory due to insufficient outlet pressure.
  • a container is also produced for the pressure distribution of a product, fitted with a valve conforming to the invention.
  • Such a container may comprise a body defining a reservoir containing the product to be dispensed, one end of which is closed by a bottom, the other end being surmounted by said valve, the means for actuating the valve consisting of a push button which may have means of broadcast for product release.
  • a container can be presented in particular in the form of a flexible pocket, possibly placed inside a body rigid, a tube, or a can.
  • the diffusion means consist of a nozzle, in particular vortex, a grid, or a porous tip, in particular a sintered or open cell foam.
  • the product can consist of a styling product, in particular a hairspray, a spray or a mousse, or a deodorant, or a care product, in particular a milk, an oil, a cream or a gel.
  • the container 100 shown in Figure 1 is in the form of a container, for aluminum example, comprising a body 101, one end 102 of which is closed by a bottom 103.
  • the other end 104 is open and is surmounted a valve 1 mounted on a cup 105, set on a rolled edge 106 of the can.
  • the valve 1 is crimped or clipped onto the cup 105.
  • a push button 109 is mounted on the valve so as to allow actuation of the valve 1, and the diffusion of the product via an outlet nozzle 107.
  • a dip tube 108 is connected to valve 1, and descends substantially to the bottom 103 of the container.
  • the valve will be the subject of a detailed description with reference to FIGS. 2A-2C and 3A-3C.
  • the valve 1 comprises mainly a body 2, the bottom 3 of which has an orifice 4 at its center surrounded by an axial chimney 7, arranged outside the valve body 2, and intended to receive a dip tube 108.
  • the end of the valve body opposite the bottom 3, is open.
  • the edge delimiting the opening 5 of the body of valve 2 forms on its outer surface a bead 8 intended for attachment of valve 1 on a valve holder cup 105.
  • Said edge also forms inside the valve body 2, a recess intended to receive a seal seal 6.
  • the seal 6 is of annular shape, and forms in its center a opening, in which is slidably mounted a sealing rod valve 9.
  • the valve stem 9 comprises a first part 10, forming a passage for outlet of the product, in the form of a tubular element, and intended for mounting an actuation and distribution device (not shown), such as a pushbutton.
  • the valve stem 9 also includes a second part emergent 11, isolated from the first and intended for pressurization atmospheric, goes an orifice 15, a compartment 12 of a regulation 13.
  • the orifice 15 is made in the bottom 18 of the valve stem.
  • AT inside the compartment 12 of the regulation chamber 13, is disposed a calibrated spring 14 intended to supply the regulation set point and which will be discussed in more detail later.
  • the first part 10 of the valve stem comprises a passage 17, passing radially through the tubular element.
  • the regulation chamber 13 is formed of a body 20, arranged coaxially inside the valve body 2, of which the upper end is closed by the bottom 18, and the lower end of which is closed by a bottom 21.
  • a movable piston 22 Inside the regulation chamber 13, is slidingly mounted a movable piston 22, sealingly isolating the upper compartment 12, and a lower compartment 23.
  • a spring 14 Inside the compartment 12 is arranged a spring 14 whose, the restoring force urges the movable piston 22 towards the bottom 21.
  • the insulation between the compartment upper 12 and lower compartment 23 is improved by the presence a thin membrane 24, in particular made of elastomeric material, and the peripheral edge is integral with the inner wall of the body of the chamber regulation.
  • the piston is isolated from the calibrated spring 14 by said membrane, preferably obtained by overmolding or bi-injection with the body of the regulation chamber.
  • the bottom 21 of the regulation chamber 13 is pierced in its center with an orifice 25 forming an inlet orifice for the regulation chamber.
  • the body 20 of the regulation chamber 13 is crossed, near the bottom 21, by an orifice 26 forming an outlet orifice for the regulation chamber 13.
  • the piston 22 is integral with a rod 27, arranged axially.
  • the rod 27 passes through the orifice 25, and has its free end ending by a plate 28 with an outside diameter greater than the diameter of the orifice 25.
  • the rod, for its part has an outer section less than the section of the orifice 25, so as to allow the product to pass between the interior walls of the orifice 25 and the rod 27.
  • the rod 27 is of sufficient length to be able to go from the closed position of the inlet port shown in the figure 2C, in the closed position of the outlet orifice 26, shown in the figure 2A.
  • a seal 31 is placed around the rod 27, in contact with the plate 28, so as to seal the inlet orifice 25 of the regulation chamber 13, in the event of overpressure inside the regulation.
  • the piston 22 is extended on the side opposite to the compartment 12 by a portion annular skirt 29, of decreasing thickness in the direction of the bottom 21.
  • the relative position of the skirt portion 29 relative to the orifice outlet 26, changes, so as to more or less clear the outlet orifice 26, and regulating the product outlet flow rate through the orifice 26.
  • a sealing is carried out all around the regulation chamber, between the body 20 of the regulation chamber 13 and the internal wall of the valve body 2 at by means of a sealing lip 30, advantageously obtained by molding with the body 20 of the regulation chamber 13, and located near the bottom 21 of the regulation chamber 13, below the outlet orifice 26.
  • valve stem 9 is actuated, that is to say pressed in against the return force of the spring 16, which causes the release of the outlet passage 17.
  • the pressure inside the compartment 23 is substantially equal to the pressure exerted by the spring calibrated 14.
  • the piston 22 is in an equilibrium position such that the inlet orifice 25 is not blocked by the plate 28.
  • the skirt portion 29 is above the orifice 26, which is entirely free.
  • the product enters the regulation by the orifice 25, leaves the regulation chamber by the orifice 26, and is routed in the tubular part 10 of the valve stem 9, goes the passage of exit 17.
  • calibrated spring 14 is chosen so as to allow optimal distribution of the product and a cessation of distribution as soon as the product can no longer be dispensed or sprayed under acceptable conditions due to pressure too weak.
  • FIGS. 2A-2C illustrate a variant of the embodiment of FIGS. 2A-2C.
  • the regulation chamber 13 does not include any means for closing the inlet orifice.
  • the closing means of the outlet orifice consist of a skirt portion 29, integral with the piston 22, and having an orifice 40 whose position by with respect to the outlet 26 determines the output flow of the product.
  • stop means 41 are provided for so as to limit the ascent of the piston in the regulation chamber, in order to never completely block the outlet in the event of overpressure in the regulation chamber.
  • valve stem is actuated, that is to say pressed against of the return force of the spring 16, which causes the passage to be cleared outlet 17.
  • the pressure inside the compartment 23 is substantially equal to the pressure exerted by the calibrated spring 14.
  • the piston 22 is in an equilibrium position such that port 40 is substantially in alignment with the outlet port 26.
  • the product enters the regulation chamber through port 25, leaves regulation chamber through the orifice 26, and is conveyed in the tubular part 10 of the valve stem 9, via the exit passage 17.
  • the orifice 40 of the skirt 29 is no longer opposite the outlet orifice 26, which is completely closed by the skirt 29 (see FIG. 3A), which interrupts definitively product distribution.
  • the force of the calibrated spring 14 is chosen so as to allow an optimal distribution of the product, and a stop of the distribution as soon as the product can no longer be distributed or sprayed in acceptable conditions, due to too low pressure.

Abstract

The valve (1) consists of a body (2) with an inlet (4) and outlet (10) controlled by an actuator (9), a return spring (16) and an output regulator (13). It has an additional return spring (14) controlling the pressure of the regulator, situated in a compartment (12) in the valve body which is isolated from the product by a piston (22). The pressure inside the compartment is equal to atmospheric

Description

La présente invention a trait à une valve, notamment pour récipient aérosol, destiné à distribuer un produit, notamment cosmétique, selon un débit sensiblement constant. L'invention est tout particulièrement adaptée à la distribution de déodorants, ou de produits de coiffage, notamment des laques ou des mousses.The present invention relates to a valve, in particular for an aerosol container, intended to distribute a product, in particular cosmetic, according to a flow substantially constant. The invention is particularly suitable for distribution of deodorants, or styling products, in particular lacquers or foams.

Dans le domaine des aérosols, se pose aujourd'hui le problème des variations de performance entre le début d'utilisation du contenu du récipient, et la fin d'utilisation. Ces problèmes se posent en particulier pour les dispositifs, où la pressurisation du produit est réalisée au moyen d'un gaz comprimé, notamment du dioxyde de carbone ou du dioxyde d'azote. Pour ces dispositifs, le gaz est soit directement au contact du produit, soit isolé du produit par un piston ou une poche contenant le produit. Les variations de débit et/ou de pression sont liées directement aux chutes de pression à l'intérieur du récipient, lesquelles provoquent inévitablement une chute du débit de sortie du produit.In the field of aerosols, the problem of variations arises today of performance between the start of use of the contents of the container, and the end of use. These problems arise in particular for devices, where the pressurization of the product is carried out by means of a compressed gas, in particular carbon dioxide or nitrogen dioxide. For these devices, the gas is either directly in contact with the product, or isolated from the product by a piston or a pocket containing the product. Variations in flow and / or pressure are linked directly to pressure drops inside the container, which inevitably cause a drop in the output flow of the product.

Il est connu, notamment de la demande de brevet EP-A-0 450 990 de prévoir une régulation à l'intérieur d'une valve de manière à réguler le débit de sortie du produit distribué. De tels systèmes de régulation impliquent entre autres, l'utilisation d'un ressort taré, commandant l'ouverture plus ou moins grande ou la fermeture d'un orifice, en fonction de la pression à l'intérieur de la chambre de régulation, par rapport à la pression de consigne imposée par le ressort. En effet, une surpression dans la chambre de régulation provoque une fermeture de l'orifice d'entrée de la chambre de régulation, jusqu'à ce que, après évacuation d'une quantité suffisante de produit contenu dans la chambre de régulation, la pression dans la chambre revienne à la pression nominale. Un des inconvénients liés à un tel système de régulation tient au fait que le ressort taré est disposé dans une partie du corps de valve, en communication avec le produit. La pression régnant dans cette partie du corps de valve est une pression partielle entre la pression atmosphérique et la pression à l'intérieur du récipient. Une telle pression dépend de la pression interne du récipient, et des pertes de charge existant jusqu'à l'orifice de sortie du produit. La pression dépend également du produit contenu dans le récipient, en particulier de sa tension de vapeur. Ainsi, pour chaque nouvelle formule, il est nécessaire d'utiliser un ressort taré différent, ce qui rend le système peu flexible. En outre, les moyens d'obturation de l'orifice de sortie ne sont pas solidaires du piston, ce qui rend moins précise la régulation de débit obtenue.It is known, in particular from patent application EP-A-0 450 990 to provide regulation inside a valve so as to regulate the outlet flow of the product distributed. Among other things, such regulatory systems involve the use of a calibrated spring, controlling the opening more or less large or the closing of an orifice, depending on the pressure inside the chamber regulation, relative to the set pressure imposed by the spring. In indeed, an overpressure in the regulation chamber causes a closure from the inlet of the control chamber, until after evacuation of a sufficient quantity of product contained in the regulation, the pressure in the chamber returns to nominal pressure. A disadvantages associated with such a regulation system is due to the fact that the spring calibrated is placed in a part of the valve body, in communication with the product. The pressure in this part of the valve body is a partial pressure between atmospheric pressure and the pressure inside the container. Such a pressure depends on the internal pressure of the container, and the pressure losses existing up to the product outlet. Pressure also depends on the product in the container, especially its vapor pressure. So, for each new formula, it is necessary to use a different calibrated spring, which makes the system not very flexible. In addition, the means for closing the outlet orifice are not integral with the piston, this which makes the flow regulation obtained less precise.

La demande de brevet FR 2 711 973 décrit un bouton poussoir à l'intérieur duquel est disposé un système de régulation. Les inconvénients d'un tel système sont principalement de deux ordres. D'une part, le système de régulation occupe une place substantielle dans le bouton poussoir, ce qui laisse peu de liberté au niveau de la définition de l'alimentation de la buse de sortie ou du système de diffusion et du mécanisme de pulvérisation. D'autre part, les moyens d'obturation de la chambre de régulation sont, entre deux utilisations, en communication avec l'extérieur du récipient, et donc avec l'air, ce qui implique une risque de "collage" élevé de l'obturateur, notamment dans le cas de produits à forte teneur en résine.Patent application FR 2 711 973 describes a push button inside which is arranged a regulation system. The disadvantages of such system are mainly of two kinds. On the one hand, the system of regulation occupies a substantial place in the push button, which leaves little freedom in the definition of the feeding of the nozzle outlet or diffusion system and spray mechanism. Else on the other hand, the means for closing the regulation chamber are, between two uses, in communication with the outside of the container, and therefore with the air, which implies a high risk of "sticking" of the shutter, especially in the case of products with a high resin content.

Aussi, est-ce un des objets de l'invention que de réaliser une valve à régulation de débit ne présentant pas les inconvénients relatifs aux dispositifs de régulation discutés précédemment en référence aux dispositifs de la technique antérieure.It is therefore one of the objects of the invention to produce a regulating valve flow without the drawbacks relating to the regulation previously discussed with reference to technical devices anterior.

C'est en particulier un objet de l'invention que de fournir une valve à dispositif de régulation intégré, fiable et économique à réaliser, et en particulier dont la consigne ne varie pas en fonction du produit à distribuer, ou des variations de pression à l'intérieur du récipient sur laquelle elle est destinée à être montée. It is in particular an object of the invention to provide a device valve integrated regulation, reliable and economical to perform, and in particular the deposit does not vary depending on the product to be distributed, or variations in pressure inside the container on which it is intended to be mounted.

C'est un autre objet de l'invention que de fournir une valve sur laquelle on peut adapter n'importe quel type de tête de distribution, et autorisant une grande latitude dans le choix des caractéristiques de diffusion de ladite tête.It is another object of the invention to provide a valve on which one can adapt any type of distribution head, and allowing a large latitude in the choice of the diffusion characteristics of said head.

D'autres objets encore apparaítront de manière détaillée dans la description qui suit.Still other objects will appear in detail in the description which follows.

Selon l'invention, ces objets sont atteints en réalisant une valve, en particulier pour récipient aérosol, comprenant à l'intérieur d'un corps de valve : a) un passage d'entrée en communication avec le récipient et un passage de sortie; b) des moyens pour, en réponse à une commande d'actionnement, mettre le passage de sortie en communication avec le passage d'entrée; c) des premier moyens de rappel élastiques pour solliciter la valve en position fermée; et d) des moyens de régulation de débit de sortie du produit, comprenant des second moyens de rappel élastiques pour fournir une pression de consigne pour lesdits moyens de régulation, caractérisée en ce que les second moyens de rappel élastiques sont disposés dans un compartiment du corps de valve, isolé du produit, la pression à l'intérieur dudit compartiment étant égale à la pression atmosphérique.According to the invention, these objects are achieved by producing a valve, in particular for an aerosol container, comprising inside a valve body: a) a inlet passage in communication with the container and an outlet passage; b) means for, in response to an actuation command, putting the exit passage in communication with the entry passage; c) first elastic return means for biasing the valve in the closed position; and D) means for regulating the output flow of the product, comprising second elastic return means for supplying a set pressure for said regulation means, characterized in that the second means elastic return are arranged in a compartment of the valve body, isolated from the product, the pressure inside said compartment being equal to the atmospheric pressure.

Ainsi, les moyens de rappel élastiques étant à la pression atmosphérique, la consigne qu'il impose est constante, quelle que soit la formule, et quelle que soit la pression à l'intérieur du récipient. En outre les moyens d'obturation associés au système de régulation étant situés à l'intérieur du corps de valve, c est à dire isolés de l'extérieur en position de fermeture de la valve, il ne se produit aucun phénomène de collage ou d'encrassement du mécanisme de régulation, lequel reste fiable avec le temps.Thus, the elastic return means being at atmospheric pressure, the setpoint it imposes is constant, whatever the formula, and whatever or the pressure inside the container. In addition the sealing means associated with the regulation system being located inside the valve body, i.e. isolated from the outside in the valve closed position, it does not produces no phenomenon of sticking or fouling of the regulation, which remains reliable over time.

Avantageusement, les moyens de régulation de débit comprennent une chambre de régulation, disposée entre le passage d'entrée et le passage de sortie, ladite chambre de régulation comportant un orifice d'entrée et un orifice de sortie, des moyens d'obturation, montés sur lesdits second moyens de rappel élastiques étant prévus pour, en fonction de la pression à l'intérieur de la chambre de régulation (en réalité, à l'intérieur de la partie dans laquelle circule le produit), modifier le degré d'ouverture de l'orifice d'entrée et/ou de sortie, lesdits second moyens de rappel élastiques étant disposés dans un compartiment de la chambre de régulation, isolé du produit par un piston mobile, en communication directe avec l'extérieur, et donc maintenu à la pression atmosphérique. Ainsi, même en cas de diffusion parasite par ou autour du piston, la pression à l'intérieur du compartiment contenant le ressort taré, reste identique à la pression atmosphérique.Advantageously, the flow regulation means comprise a regulation chamber, arranged between the inlet passage and the passage of outlet, said control chamber having an inlet port and an orifice outlet, shutter means, mounted on said second means elastic return being provided for, depending on the pressure inside the regulation chamber (in reality, inside the part in which circulates the product), modify the degree of opening of the inlet and / or outlet orifice, said second elastic return means being arranged in a regulation chamber compartment, isolated from the product by a piston mobile, in direct communication with the outside, and therefore maintained at atmospheric pressure. Thus, even in the event of parasitic diffusion by or around the piston, the pressure inside the compartment containing the spring tared, remains identical to atmospheric pressure.

Avantageusement, le piston mobile est solidaire desdits premier moyens d'obturation. Ceci contribue à améliorer la précision de la régulation dans le débit de sortie du produit.Advantageously, the movable piston is integral with said first means shutter. This contributes to improving the precision of the regulation in the product outlet flow.

Selon un mode de réalisation spécifique, les moyens d'obturation comprennent des premier moyens d'obturation de l'orifice de sortie, constitués d'une jupe annulaire portée par le piston et disposée à l'intérieur de la chambre de régulation, et dont la position par rapport à l'orifice de sortie détermine le degré d'ouverture de ce dernier. La jupe annulaire forme une seule pièce avec le piston, pouvant être obtenue de moulage d'un matériau thermoplastique, telle qu'une polyoléfine, notamment un polyéthylène ou un polypropylène.According to a specific embodiment, the sealing means comprise first means for closing the outlet orifice, consisting of a skirt annular carried by the piston and disposed inside the chamber regulation, and whose position relative to the outlet orifice determines the degree opening of the latter. The annular skirt forms a single piece with the piston, obtainable by molding a thermoplastic material, such than a polyolefin, in particular a polyethylene or a polypropylene.

Avantageusement, le piston mobile est monté coulissant à l'intérieur de la chambre de régulation. L'étanchéité entre le compartiment contenant le ressort taré et le compartiment formant la chambre de régulation proprement dite, est améliorée au moyen d'une membrane souple disposée à l'intérieur du corps de la chambre de régulation, entre le piston et le ressort taré. De préférence, une telle membrane est surmoulée ou bi-injectée avec le corps de la chambre de régulation. Cette membrane partait l'étanchéité entre les deux compartiments de la chambre de régulation, sans affecter de manière sensible la force d'appui exercée par les second moyens de rappel élastiques sur le piston. Advantageously, the movable piston is slidably mounted inside the regulation chamber. The seal between the compartment containing the spring calibrated and the compartment forming the actual regulation chamber is improved by means of a flexible membrane placed inside the body of the regulation chamber, between the piston and the calibrated spring. Preferably, a such membrane is overmolded or bi-injected with the body of the chamber regulation. This membrane started the seal between the two compartments of the regulation chamber, without appreciably affecting the pressing force exerted by the second elastic return means on the piston.

Avantageusement encore, des moyens de butée sont prévus pour, en cas de surpression à l'intérieur de la chambre de régulation, maintenir un débit minimum de sortie du produit. On permet ainsi la sortie du produit contenu dans la chambre de régulation, jusqu'à ce que la pression à l'intérieur de la chambre de régulation revienne au niveau de la consigne imposée par les second moyens de rappel élastiques, évitant ainsi tout phénomène de blocage de la valve.Advantageously also, stop means are provided for, in the event of overpressure inside the regulation chamber, maintain a flow minimum product output. This allows the product contained in the regulation chamber, until the pressure inside the chamber returns to the level set by the second elastic return means, thus avoiding any phenomenon of blockage of the valve.

Les moyens d'obturation peuvent également comprendre des second moyens d'obturation, solidaires du piston mobile pour, en fonction de la pression à l'intérieur de la chambre de régulation, modifier le degré d'ouverture de l'orifice d'entrée de la chambre de régulation, lesdits premier et second moyens d'obturation étant agencés de sorte qu'en position fermée de l'orifice d'entrée, l'orifice de sortie soit au moins partiellement ouvert. On améliore encore le niveau de régulation de la valve. En effet, selon ce mode de réalisation, on régule également la pression à l'intérieur de la chambre de régulation.The sealing means may also include second means shutter, integral with the movable piston for, depending on the pressure at inside the regulation chamber, modify the degree of opening of the orifice of the regulation chamber, said first and second means shutter being arranged so that in the closed position of the inlet orifice, the outlet is at least partially open. We further improve the level of valve regulation. Indeed, according to this embodiment, we also regulates the pressure inside the regulation chamber.

Selon un mode de réalisation particulier, l'orifice d'entrée est disposé dans le fond de la chambre de régulation, l'orifice de sortie étant situé sur une paroi latérale de la chambre de régulation, à distance d du fond de la chambre de régulation, une lèvre annulaire assurant l'étanchéité entre la chambre de régulation et le corps de valve, tout autour de ladite chambre de régulation, ladite lèvre d'étanchéité étant disposée axialement entre le fond de la chambre de régulation et l'orifice de sortie. Une telle lèvre d'annulaire peut être obtenue de moulage avec la chambre de régulation.According to a particular embodiment, the inlet orifice is arranged in the bottom of the regulation chamber, the outlet orifice being located on a wall side of the control chamber, at a distance d from the bottom of the control chamber regulation, an annular lip ensuring sealing between the regulation and the valve body, all around said regulation chamber, said sealing lip being disposed axially between the bottom of the chamber regulator and outlet. Such ring finger can be obtained molding with the regulation chamber.

Selon un mode de réalisation préféré, le passage de sortie est formé d'une tige de valve solidaire de la chambre de régulation, ladite chambre de régulation étant montée sur lesdits premier moyens de rappel élastiques, ladite tige de valve comportant une partie émergente hors du corps de valve, et formant un canal de sortie pouvant être mis en communication avec le corps de valve via un passage traversant radialement la tige de valve. Alternativement, il peut s'agir d'une valve de type "femelle" destinée à recevoir une tige creuse portée par le mécanisme d'actionnement de la valve.According to a preferred embodiment, the outlet passage is formed of a rod valve integral with the regulation chamber, said regulation chamber being mounted on said first elastic return means, said rod valve comprising an emerging part outside the valve body, and forming a outlet channel which can be put in communication with the valve body via a passage passing radially through the valve stem. Alternatively, it can be a "female" type valve intended to receive a hollow hollow rod by the valve actuation mechanism.

Avantageusement, en position fermée de la valve, le passage radial est maintenu en regard d'un joint d'étanchéité situé dans la partie supérieure du corps de valve.Advantageously, in the closed position of the valve, the radial passage is maintained opposite a seal located in the upper part of the valve body.

Selon un autre mode de réalisation préférentiel, lorsque la pression à l'intérieur de la chambre de régulation descend sous une valeur prédéterminée, les moyens d'obturation obturent de manière étanche l'orifice de sortie de la chambre de régulation, de manière à interrompre la distribution de produit. Ainsi, on empêche toute pulvérisation ou diffusion dont les caractéristiques ne seraient pas satisfaisantes, en raison d'une pression de sortie insuffisante.According to another preferred embodiment, when the pressure inside of the control chamber drops below a predetermined value, the sealing means seal the outlet orifice of the regulation chamber, so as to interrupt the dispensing of product. This prevents any spraying or diffusion whose characteristics do not would be unsatisfactory due to insufficient outlet pressure.

Selon un autre aspect de l'invention, on réalise également un récipient pour la distribution sous pression d'un produit, équipé d'une valve conforme à l'invention.According to another aspect of the invention, a container is also produced for the pressure distribution of a product, fitted with a valve conforming to the invention.

Un tel récipient peut comprendre un corps définissant un réservoir contenant le produit à distribuer, et dont une extrémité est fermée par un fond, l'autre extrémité étant surmontée de ladite valve, le moyen d'actionnement de la valve étant constitué d'un bouton poussoir pouvant présenter des moyens de diffusion pour la sortie du produit. Un tel récipient peut se présenter notamment sous forme d'une poche souple, placée éventuellement à l'intérieur d'un corps rigide, d'un tube, ou d'un bidon.Such a container may comprise a body defining a reservoir containing the product to be dispensed, one end of which is closed by a bottom, the other end being surmounted by said valve, the means for actuating the valve consisting of a push button which may have means of broadcast for product release. Such a container can be presented in particular in the form of a flexible pocket, possibly placed inside a body rigid, a tube, or a can.

A titre d'exemple, les moyens de diffusion sont constitués d'une buse, notamment tourbillonnaire, d'une grille, ou d'un embout poreux, notamment un fritté ou une mousse à cellules ouvertes. Le produit peut être constitué d'un produit de coiffage, notamment une laque, un spray ou une mousse, ou un déodorant, ou un produit de soin, notamment un lait, une huile, une crème ou un gel. By way of example, the diffusion means consist of a nozzle, in particular vortex, a grid, or a porous tip, in particular a sintered or open cell foam. The product can consist of a styling product, in particular a hairspray, a spray or a mousse, or a deodorant, or a care product, in particular a milk, an oil, a cream or a gel.

L'invention consiste, mises à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions qui seront explicitées ci-après, à propos d'exemples de réalisation non limitatifs, décrits en référence aux figures annexées, parmi lesquelles :

  • le figure 1 représente un mode de réalisation d'un récipient équipé d'une valve selon l'invention;
  • les figures 2A-2C illustrent de façon schématique un premier mode de réalisation d'une valve selon l'invention; et
  • les figures 3A-3C illustrent de façon schématique un second mode de réalisation d'une valve selon l'invention.
The invention consists, apart from the arrangements set out above, of a certain number of other arrangements which will be explained below, with reference to nonlimiting exemplary embodiments, described with reference to the appended figures, among which:
  • FIG. 1 represents an embodiment of a container equipped with a valve according to the invention;
  • FIGS. 2A-2C schematically illustrate a first embodiment of a valve according to the invention; and
  • Figures 3A-3C schematically illustrate a second embodiment of a valve according to the invention.

Le récipient 100 représenté à la figure 1 est sous forme d'un bidon, par exemple en aluminium, comprenant un corps 101 dont une extrémité 102 est fermée par un fond 103. L'autre extrémité 104 est ouverte et est surmontée d'une valve 1 montée sur une coupelle 105, sertie sur un bord roulé 106 du bidon. La valve 1 est sertie ou clipsée sur la coupelle 105. Un bouton poussoir 109 est monté sur la valve de manière à permettre l'actionnement de la valve 1, et la diffusion du produit via une buse de sortie 107. Un tube plongeur 108 est relié à la valve 1, et descend sensiblement jusqu'au fond 103 du bidon. La valve fera l'objet d'une description détaillée en référence aux figures 2A-2C et 3A-3C.The container 100 shown in Figure 1 is in the form of a container, for aluminum example, comprising a body 101, one end 102 of which is closed by a bottom 103. The other end 104 is open and is surmounted a valve 1 mounted on a cup 105, set on a rolled edge 106 of the can. The valve 1 is crimped or clipped onto the cup 105. A push button 109 is mounted on the valve so as to allow actuation of the valve 1, and the diffusion of the product via an outlet nozzle 107. A dip tube 108 is connected to valve 1, and descends substantially to the bottom 103 of the container. The valve will be the subject of a detailed description with reference to FIGS. 2A-2C and 3A-3C.

Dans le mode de réalisation des figures 2A-2C, la valve 1 comprend principalement un corps 2 dont le fond 3 présente en son centre un orifice 4 entouré d'une cheminée axiale 7, disposée à l'extérieur du corps de valve 2, et destinée à recevoir un tube plongeur 108. L'extrémité du corps de valve opposée au fond 3, est ouverte. Le bord délimitant l'ouverture 5 du corps de valve 2 forme sur sa surface extérieure un bourrelet 8 destiné à l'accrochage de la valve 1 sur une coupelle porte valve 105. Ledit bord forme également à l'intérieur du corps de valve 2, un décrochement destiné à recevoir un joint d'étanchéité 6. Le joint 6 est de forme annulaire, et forme en son centre une ouverture, dans laquelle est montée à coulisse, de manière étanche une tige de valve 9.In the embodiment of FIGS. 2A-2C, the valve 1 comprises mainly a body 2, the bottom 3 of which has an orifice 4 at its center surrounded by an axial chimney 7, arranged outside the valve body 2, and intended to receive a dip tube 108. The end of the valve body opposite the bottom 3, is open. The edge delimiting the opening 5 of the body of valve 2 forms on its outer surface a bead 8 intended for attachment of valve 1 on a valve holder cup 105. Said edge also forms inside the valve body 2, a recess intended to receive a seal seal 6. The seal 6 is of annular shape, and forms in its center a opening, in which is slidably mounted a sealing rod valve 9.

La tige de valve 9 comprend une première partie 10, formant un passage de sortie du produit, sous forme d'un élément tubulaire, et destinée au montage d'un dispositif d'actionnement et de distribution (non représenté), tel qu'un bouton poussoir. La tige de valve 9 comprend également une seconde partie émergente 11, isolée de la première et destinée à la mise à la pression atmosphérique, va un orifice 15, d'un compartiment 12 d'une chambre de régulation 13. L'orifice 15 est réalisé dans le fond 18 de la tige de valve. A l'intérieur du compartiment 12 de la chambre de régulation 13, est disposé un ressort taré 14 destiné à fournir la consigne de régulation et dont on parlera plus en détail par la suite. La première partie 10 de la tige de valve comporte un passage 17, traversant radialement l'élément tubulaire. En position de repos de la valve (figure 1A), sous l'action de rappel élastique exercée par le ressort 16, le passage 17 est disposé en regard du joint annulaire 6, de manière à maintenir la valve en position de fermeture. A cet effet, le ressort 16 est en appui d'une part contre le fond 21 de la chambre de régulation, et d'autre part contre le fond 3 du corps de valve. Le fond 18 de la tige de valve présente une arête annulaire 19, tournée vers le joint 6, et qui, sous l'action du ressort 16, est maintenue en appui sur le joint d'étanchéité 6, tout autour de la tige de valve 9, de manière à assurer l'étanchéité à la fermeture.The valve stem 9 comprises a first part 10, forming a passage for outlet of the product, in the form of a tubular element, and intended for mounting an actuation and distribution device (not shown), such as a pushbutton. The valve stem 9 also includes a second part emergent 11, isolated from the first and intended for pressurization atmospheric, goes an orifice 15, a compartment 12 of a regulation 13. The orifice 15 is made in the bottom 18 of the valve stem. AT inside the compartment 12 of the regulation chamber 13, is disposed a calibrated spring 14 intended to supply the regulation set point and which will be discussed in more detail later. The first part 10 of the valve stem comprises a passage 17, passing radially through the tubular element. In rest position of the valve (Figure 1A), under the elastic return action exerted by the spring 16, the passage 17 is arranged opposite the annular seal 6, so as to keep the valve in the closed position. For this purpose, the spring 16 is in support on the one hand against the bottom 21 of the regulation chamber, and on the other hand against the bottom 3 of the valve body. The bottom 18 of the valve stem has a annular edge 19, facing the seal 6, and which, under the action of the spring 16, is maintained in abutment on the seal 6, all around the valve stem 9, so as to seal the closure.

Du côté opposé à la tige de valve, le fond 18 est solidaire de la chambre de régulation 13, laquelle est de diamètre extérieur sensiblement identique au diamètre extérieur du fond 18. La chambre de régulation 13 est formée d'un corps 20, disposé de manière coaxiale à l'intérieur du corps de valve 2, dont l'extrémité supérieure est fermée par le fond 18, et dont l'extrémité inférieure est fermée par un fond 21. A l'intérieur de la chambre de régulation 13, est monté à coulisse un piston mobile 22, isolant de manière étanche le compartiment supérieur 12, et un compartiment inférieur 23. A l'intérieur du compartiment 12 est disposé un ressort 14 dont, la force de rappel sollicite le piston mobile 22 en direction du fond 21. L'isolation entre le compartiment supérieur 12 et le compartiment inférieur 23 est améliorée par la présence d'une fine membrane 24, notamment en matériau élastomérique, et dont le bord périphérique est solidaire de la paroi intérieure du corps de la chambre de régulation. Ainsi, le piston est isolé du ressort taré 14 par ladite membrane, obtenue de préférence, par surmoulage ou bi-injection avec le corps de la chambre de régulation.On the side opposite the valve stem, the bottom 18 is integral with the regulation 13, which has an outer diameter substantially identical to the outer diameter of the bottom 18. The regulation chamber 13 is formed of a body 20, arranged coaxially inside the valve body 2, of which the upper end is closed by the bottom 18, and the lower end of which is closed by a bottom 21. Inside the regulation chamber 13, is slidingly mounted a movable piston 22, sealingly isolating the upper compartment 12, and a lower compartment 23. Inside the compartment 12 is arranged a spring 14 whose, the restoring force urges the movable piston 22 towards the bottom 21. The insulation between the compartment upper 12 and lower compartment 23 is improved by the presence a thin membrane 24, in particular made of elastomeric material, and the peripheral edge is integral with the inner wall of the body of the chamber regulation. Thus, the piston is isolated from the calibrated spring 14 by said membrane, preferably obtained by overmolding or bi-injection with the body of the regulation chamber.

Le fond 21 de la chambre de régulation 13 est percé en son centre d'un orifice 25 formant un orifice d'entrée pour la chambre de régulation. Le corps 20 de la chambre de régulation 13 est traversé, au voisinage du fond 21, par un orifice 26 formant un orifice de sortie pour la chambre de régulation 13. Du côté opposé au compartiment 12, le piston 22 est solidaire d'une tige 27, disposée axialement. La tige 27 traverse l'orifice 25, et a son extrémité libre se terminant par un plateau 28 de diamètre extérieur supérieur au diamètre de l'orifice 25. La tige quant à elle, est de section extérieure inférieure à la section de l'orifice 25, de manière à permettre au produit de passer entre les parois intérieures de l'orifice 25 et la tige 27. La tige 27 est de longueur suffisante pour pouvoir passer de la position de fermeture de l'orifice d'entrée représentée à la figure 2C, à la position de fermeture de l'orifice de sortie 26, représentée à la figure 2A. Un joint 31 est disposé autour de la tige 27, en contact avec le plateau 28, de manière à assurer la fermeture étanche de l'orifice d'entrée 25 de la chambre de régulation 13, en cas de surpression à l'intérieur de la chambre de régulation.The bottom 21 of the regulation chamber 13 is pierced in its center with an orifice 25 forming an inlet orifice for the regulation chamber. The body 20 of the regulation chamber 13 is crossed, near the bottom 21, by an orifice 26 forming an outlet orifice for the regulation chamber 13. On the side opposite the compartment 12, the piston 22 is integral with a rod 27, arranged axially. The rod 27 passes through the orifice 25, and has its free end ending by a plate 28 with an outside diameter greater than the diameter of the orifice 25. The rod, for its part, has an outer section less than the section of the orifice 25, so as to allow the product to pass between the interior walls of the orifice 25 and the rod 27. The rod 27 is of sufficient length to be able to go from the closed position of the inlet port shown in the figure 2C, in the closed position of the outlet orifice 26, shown in the figure 2A. A seal 31 is placed around the rod 27, in contact with the plate 28, so as to seal the inlet orifice 25 of the regulation chamber 13, in the event of overpressure inside the regulation.

Le piston 22 se prolonge du côté opposé au compartiment 12 par une portion de jupe annulaire 29, d'épaisseur décroissante en direction du fond 21. Ainsi, en fonction de la pression à l'intérieur du récipient, comparée à la pression du ressort taré 14, la position relative de la portion de jupe 29 par rapport à l'orifice de sortie 26, change, de manière à dégager plus ou moins l'orifice de sortie 26, et à réguler le débit de sortie de produit au travers de l'orifice 26. Une étanchéité est réalisée tout autour de la chambre de régulation, entre le corps 20 de la chambre de régulation 13 et la paroi interne du corps de valve 2 au moyen d'une lèvre d'étanchéité 30, obtenue avantageusement de moulage avec le corps 20 de la chambre de régulation 13, et située au voisinage du fond 21 de la chambre de régulation 13, en dessous de l'orifice de sortie 26.The piston 22 is extended on the side opposite to the compartment 12 by a portion annular skirt 29, of decreasing thickness in the direction of the bottom 21. Thus, as a function of the pressure inside the container, compared to the pressure of the calibrated spring 14, the relative position of the skirt portion 29 relative to the orifice outlet 26, changes, so as to more or less clear the outlet orifice 26, and regulating the product outlet flow rate through the orifice 26. A sealing is carried out all around the regulation chamber, between the body 20 of the regulation chamber 13 and the internal wall of the valve body 2 at by means of a sealing lip 30, advantageously obtained by molding with the body 20 of the regulation chamber 13, and located near the bottom 21 of the regulation chamber 13, below the outlet orifice 26.

Le fonctionnement d'une telle régulation est le suivant. A la figure 2A, en position non montée de la valve, ou dans le cas d'une valve montée sur un récipient non encore rempli ou pratiquement vide, le ressort taré 14 sollicite le piston 22, au travers de la membrane 24, en direction du fond 21 de la chambre de régulation, et la jupe 29 obture totalement l'orifice de sortie 26. Dans cette position, la tige de valve n'est pas actionnée. Le passage de sortie 17 est situé en regard du joint 6.The operation of such regulation is as follows. In Figure 2A, in valve not mounted position, or in the case of a valve mounted on a container not yet filled or practically empty, the calibrated spring 14 urges the piston 22, through the membrane 24, towards the bottom 21 of the regulation chamber, and the skirt 29 completely closes the outlet orifice 26. In this position, the valve stem is not actuated. The exit passage 17 is located opposite seal 6.

A la figure 2B, la tige de valve 9 est actionnée, c'est à dire enfoncée à l'encontre de la force de rappel du ressort 16, ce qui provoque le dégagement du passage de sortie 17. Dans cette configuration, la pression à l'intérieur du compartiment 23 est sensiblement égale à la pression exercée par le ressort taré 14. Le piston 22 est dans une position d'équilibre telle, que l'orifice d'entrée 25 n'est pas obturé par le plateau 28. La portion de jupe 29 est au dessus de l'orifice 26, lequel est entièrement dégagé. Le produit entre dans la chambre de régulation par l'orifice 25, sort de la chambre de régulation par l'orifice 26, et est acheminé dans la partie tubulaire 10 de la tige de valve 9, va le passage de sortie 17.In FIG. 2B, the valve stem 9 is actuated, that is to say pressed in against the return force of the spring 16, which causes the release of the outlet passage 17. In this configuration, the pressure inside the compartment 23 is substantially equal to the pressure exerted by the spring calibrated 14. The piston 22 is in an equilibrium position such that the inlet orifice 25 is not blocked by the plate 28. The skirt portion 29 is above the orifice 26, which is entirely free. The product enters the regulation by the orifice 25, leaves the regulation chamber by the orifice 26, and is routed in the tubular part 10 of the valve stem 9, goes the passage of exit 17.

Lorsque la pression diminue à l'intérieur du compartiment 23, le piston 22 redescend dans la chambre de régulation 13, réduisant ainsi la section ouverte de l'orifice de sortie, ce qui provoque la remontée de la pression dans ladite chambre de régulation, jusqu'à ce qu'elle revienne à la pression normale de fonctionnement. Lorsque la pression devient trop faible à l'intérieur du récipient, notamment en fin d'utilisation, l'orifice de sortie 26 est totalement obturé par la jupe 29, ce qui interrompt définitivement la distribution de produit. La force du ressort taré 14 est choisie de façon à permettre une distribution optimale du produit et un arrêt de la distribution dès que le produit ne peut plus être distribué ou pulvérisé dans des conditions acceptables, du fait d'une pression trop faible.When the pressure decreases inside the compartment 23, the piston 22 goes back down into the regulation chamber 13, thus reducing the open section of the outlet, which causes the pressure to rise in said control chamber, until it returns to normal pressure operation. When the pressure becomes too low inside the container, in particular at the end of use, the outlet orifice 26 is completely closed by the skirt 29, which definitively interrupts product distribution. The strength of calibrated spring 14 is chosen so as to allow optimal distribution of the product and a cessation of distribution as soon as the product can no longer be dispensed or sprayed under acceptable conditions due to pressure too weak.

Dès que la pression devient trop élevée dans la chambre de régulation 13, le piston 22 remonte dans la chambre de régulation. Cette remontée du piston 22 tend à obturer l'orifice d'entrée 25 de la chambre de régulation au moyen du plateau 28. En position extrême représentée à la figure 2C, l'orifice d'entrée 25 est obturé de manière étanche par le plateau 28. L'orifice de sortie 26 est ouvert au maximum. Dès que la pression redescend dans le compartiment 23 pour revenir à une pression de fonctionnement normal, l'orifice d'entrée 25 s ouvre à nouveau, et le produit entre dans le compartiment 23. Il s'en suit un équilibre permanent entre l'entrée 25 et la sortie 26 de la chambre de régulation, et donc une régulation excellente de débit et/ou de pression de sortie de produit distribué par la valve.As soon as the pressure becomes too high in the regulation chamber 13, the piston 22 rises in the regulation chamber. This rise of the piston 22 tends to block the inlet orifice 25 of the regulation chamber by means of the plate 28. In the extreme position shown in FIG. 2C, the inlet orifice 25 is sealed off by the plate 28. The outlet orifice 26 is open to the maximum. As soon as the pressure drops in compartment 23 to return to normal operating pressure, the inlet 25 opens again, and the product enters compartment 23. There follows a permanent balance between inlet 25 and outlet 26 of the regulation, and therefore excellent regulation of flow and / or pressure of outlet of product dispensed by the valve.

Les figures 3A-3C auxquelles il est maintenant fait référence, illustrent une variante du mode de réalisation des figures 2A-2C. Selon cette variante, seule le débit de sortie du produit est contrôlé, le compartiment 23 de la chambre de régulation 13 étant à la même pression que le récipient. A la différence du premier mode de réalisation, la chambre de régulation 13 ne comporte pas de moyens d'obturation de l'orifice d'entrée. Selon ce mode de réalisation, les moyens d'obturation de l'orifice de sortie sont constitués d'une portion de jupe 29, solidaire du piston 22, et présentant un orifice 40 dont la position par rapport à l'orifice de sortie 26 détermine le débit de sortie du produit. De plus, dans le compartiment 12, des moyens formant butée 41 sont prévus de manière à limiter la remontée du piston dans la chambre de régulation, afin de ne jamais obturer complètement l'orifice de sortie en cas de surpression dans la chambre de régulation.Figures 3A-3C to which reference is now made illustrate a variant of the embodiment of FIGS. 2A-2C. According to this variant, only the output flow of the product is controlled, compartment 23 of the regulation 13 being at the same pressure as the container. Unlike the first embodiment, the regulation chamber 13 does not include any means for closing the inlet orifice. According to this embodiment, the closing means of the outlet orifice consist of a skirt portion 29, integral with the piston 22, and having an orifice 40 whose position by with respect to the outlet 26 determines the output flow of the product. Moreover, in the compartment 12, stop means 41 are provided for so as to limit the ascent of the piston in the regulation chamber, in order to never completely block the outlet in the event of overpressure in the regulation chamber.

Le fonctionnement d'une telle régulation est le suivant. A la figure 3A, en position non montée de la valve, ou dans le cas d'une valve montée sur un récipient non encore rempli, le ressort taré 14 sollicite le piston 22 en direction du fond 21 de la chambre de régulation, et l'orifice 40 est décalé par rapport à l'orifice 26, de sorte que la jupe 29 obture totalement l'orifice de sortie 26. Dans cette position, la tige de valve n'est pas actionnée. Le passage de sortie 17 est situé en regard du joint 6.The operation of such regulation is as follows. In Figure 3A, in valve not mounted position, or in the case of a valve mounted on a container not yet filled, the calibrated spring 14 urges the piston 22 towards from the bottom 21 of the regulation chamber, and the orifice 40 is offset with respect to the orifice 26, so that the skirt 29 completely closes the outlet orifice 26. In this position, the valve stem is not actuated. Exit passage 17 is located next to seal 6.

A la figure 3C, la tige de valve est actionnée, c'est à dire enfoncée à l'encontre de la force de rappel du ressort 16, ce qui provoque le dégagement du passage de sortie 17. Dans cette configuration, la pression à l'intérieur du compartiment 23 est sensiblement égale à la pression exercée par le ressort taré 14. Le piston 22 est dans une position d'équilibre telle, que l'orifice 40 est sensiblement en alignement avec l'orifice de sortie 26. Le produit entre dans la chambre de régulation par l'orifice 25, sort de la chambre de régulation par l'orifice 26, et est acheminé dans la partie tubulaire 10 de la tige de valve 9, via le passage de sortie 17.In FIG. 3C, the valve stem is actuated, that is to say pressed against of the return force of the spring 16, which causes the passage to be cleared outlet 17. In this configuration, the pressure inside the compartment 23 is substantially equal to the pressure exerted by the calibrated spring 14. The piston 22 is in an equilibrium position such that port 40 is substantially in alignment with the outlet port 26. The product enters the regulation chamber through port 25, leaves regulation chamber through the orifice 26, and is conveyed in the tubular part 10 of the valve stem 9, via the exit passage 17.

Lorsque la pression devient trop faible à l'intérieur du récipient, notamment en fin d'utilisation, l'orifice 40 de la jupe 29 n'est plus en regard de l'orifice de sortie 26, lequel est totalement obturé par la jupe 29 (voir figure 3A), ce qui interrompt définitivement la distribution de produit. La force du ressort taré 14 est choisie de façon à permettre une distribution optimale du produit, et un arrêt de la distribution dès que le produit ne peut plus être distribué ou pulvérisé dans des conditions acceptables, du fait d'une pression trop faible.When the pressure becomes too low inside the container, especially in end of use, the orifice 40 of the skirt 29 is no longer opposite the outlet orifice 26, which is completely closed by the skirt 29 (see FIG. 3A), which interrupts definitively product distribution. The force of the calibrated spring 14 is chosen so as to allow an optimal distribution of the product, and a stop of the distribution as soon as the product can no longer be distributed or sprayed in acceptable conditions, due to too low pressure.

Dès que la pression devient trop élevée dans le compartiment 23 de la chambre de régulation 13, le piston 22 remonte dans la chambre de régulation. Cette remontée du piston 22 tend à obturer l'orifice de sortie 26 de la chambre de régulation, en décalant plus ou moins l'orifice 40 vers le haut, par rapport à l'orifice 26, réduisant ainsi le débit de sortie. En position extrême représentée à la figure 3B, le piston 22 est en butée contre la couronne annulaire 41. Dans cette position, on conserve une ouverture minimale de l'orifice de sortie 26, de manière à ne pas bloquer la valve. Lorsque la pression revient à une pression normale de fonctionnement, le piston revient dans la position d'équilibre de la figure 3C.As soon as the pressure becomes too high in compartment 23 of the regulation chamber 13, the piston 22 rises in the regulation chamber. This raising of the piston 22 tends to close the outlet orifice 26 of the chamber regulating, by more or less shifting the orifice 40 upwards, relative to orifice 26, thereby reducing the output flow. In the extreme position shown at FIG. 3B, the piston 22 is in abutment against the annular ring 41. In this position, a minimum opening of the outlet orifice 26 is kept, so as not to block the valve. When the pressure returns to a pressure normal operation, the piston returns to the equilibrium position of the Figure 3C.

Dans la description détaillée qui précède, il a été fait référence à des modes de réalisation préférés de l'invention. Il est évident que des variantes peuvent y être apportées sans s'écarter de l'esprit de l'invention telle que revendiquée ciaprès. A titre d'exemple, on peut, notamment dans le cas de formules visqueuses, s'affranchir de la présence de la membrane 24 au dessus du piston 22. A titre d'exemple encore, la régulation peut ne se faire qu'en entrée de la chambre de régulation, avec un dispositif à tige et plateau du type de celui décrit en référence aux figures 2A-2C.In the foregoing detailed description, reference has been made to modes of preferred embodiments of the invention. It is obvious that variants may exist there. be made without departing from the spirit of the invention as claimed below. By way of example, it is possible, in particular in the case of formulas viscous, overcome the presence of the membrane 24 above the piston 22. As another example, the regulation can be done only at the inlet of the regulation chamber, with a rod and plate device of the type of that described with reference to FIGS. 2A-2C.

Claims (16)

Valve (1), en particulier pour récipient aérosol, comprenant à l'intérieur d'un corps de valve (2) : a) un passage d'entrée (4) en communication avec le récipient et un passage de sortie (10) ; b) des moyens (9) pour, en réponse à une commande d'actionnement, mettre le passage de sortie (10) en communication avec le passage d'entrée (4) ; c) des premier moyens de rappel élastiques (16) pour solliciter la valve (1) en position fermée; et d) des moyens de régulation de débit de sortie du produit (13), comprenant des second moyens de rappel élastiques (14) pour fournir une pression de consigne pour lesdits moyens de régulation, caractérisée en ce que les second moyens de rappel élastiques (14) sont disposés dans un compartiment (12) du corps de valve (2), isolé du produit, la pression à l'intérieur dudit compartiment (12) étant égale à la pression atmosphérique.Valve (1), in particular for an aerosol container, comprising inside a valve body (2): a) an inlet passage (4) in communication with the container and an outlet passage (10); b) means (9) for, in response to an actuation command, switch the outlet passage (10) on communication with the entrance passage (4); c) first means of recall elastics (16) for biasing the valve (1) in the closed position; and d) means regulating the product outlet flow rate (13), comprising second elastic return means (14) for supplying a set pressure for said means of regulation, characterized in that the second means of elastic return (14) are arranged in a compartment (12) of the body valve (2), isolated from the product, the pressure inside said compartment (12) being equal to atmospheric pressure. Valve selon la revendication 1 caractérisée en ce que les moyens de régulation de débit (13) comprennent une chambre de régulation (13), disposée entre le passage d'entrée (4) et le passage de sortie (10), ladite chambre de régulation comportant un orifice d'entrée (25) et un orifice de sortie (26), des moyens d'obturation (28, 29), montés sur lesdits second moyens de rappel élastiques (14) étant prévus pour, en fonction de la pression entre l'orifice d'entrée (25) et l'orifice de sortie (26), modifier le degré d'ouverture de l'orifice d'entrée (25) et/ou de sortie (26), lesdits second moyens de rappel élastiques (14) étant disposés dans un compartiment (12) de la chambre de régulation (13), isolé du produit par un piston mobile (22), et maintenu à la pression atmosphérique.Valve according to claim 1 characterized in that the means for flow control (13) includes a control chamber (13), arranged between the inlet passage (4) and the outlet passage (10), said regulation comprising an inlet orifice (25) and an outlet orifice (26), sealing means (28, 29), mounted on said second return means elastics (14) being provided for, depending on the pressure between the orifice inlet (25) and outlet (26), change the degree of opening of the opening inlet (25) and / or outlet (26), said second elastic return means (14) being arranged in a compartment (12) of the regulation chamber (13), isolated from the product by a movable piston (22), and maintained at the pressure atmospheric. Valve selon la revendication 2 caractérisée en ce que le piston mobile (22) est solidaire desdits moyens d'obturation (28, 29). Valve according to claim 2 characterized in that the movable piston (22) is integral with said closure means (28, 29). Valve selon la revendication 3 caractérisé en ce que les moyens d'obturation (28, 29) comprennent des premier moyens d'obturation (29) de l'orifice de sortie (26), constitués d'une jupe annulaire (29) portée par le piston (22) et disposée à l'intérieur de la chambre de régulation (13), et dont la position par rapport à l'orifice de sortie (26) détermine le degré d'ouverture de ce dernier.Valve according to claim 3 characterized in that the means shutter (28, 29) comprise first shutter means (29) of the outlet orifice (26), consisting of an annular skirt (29) carried by the piston (22) and arranged inside the regulation chamber (13), and the position relative to the outlet (26) determines the degree of opening of this last. Valve selon l'une quelconque des revendications 2 à 4 caractérisée en ce que le piston mobile (22) est monté coulissant à l'intérieur de la chambre de régulation (13), une membrane souple (24) étant disposée dans la chambre de régulation (13) entre ledit piston (22) et les second moyens de rappel élastiques (14), de manière à isoler de manière étanche le piston (22) desdits second moyens de rappel élastiques (14).Valve according to any one of Claims 2 to 4, characterized in that that the movable piston (22) is slidably mounted inside the chamber regulation (13), a flexible membrane (24) being arranged in the regulation (13) between said piston (22) and the second return means elastic (14), so as to sealingly isolate the piston (22) from said second elastic return means (14). Valve selon la revendication 5 caractérisée en ce que la membrane souple (24) est surmoulée ou bi-injectée avec le corps de la chambre de régulation (13).Valve according to claim 5 characterized in that the flexible membrane (24) is overmolded or bi-injected with the body of the regulation chamber (13). Valve selon l'une quelconque des revendications 2 à 6 caractérisée en ce que des moyens de butée (41) sont prévus pour, en cas de surpression à l'intérieur de la chambre de régulation (13), maintenir un débit minimum de sortie du produit.Valve according to any one of Claims 2 to 6, characterized in that that stop means (41) are provided for, in the event of overpressure at inside the regulation chamber (13), maintain a minimum flow of product release. Valve selon l'une quelconque des revendications 2 à 7 caractérisé en ce les moyens d'obturation (28, 29) comprennent en plus des second moyens d'obturation (28), solidaires du piston mobile (22) pour, en fonction de la pression à l'intérieur de la chambre de régulation (13), modifier le degré d'ouverture de l'orifice d'entrée (25) de la chambre de régulation (13), lesdits premier et second moyens d'obturation (28, 29) étant agencés de sorte qu'en position fermée de l'orifice d'entrée (25), l'orifice de sortie (26) soit au moins partiellement ouvert. Valve according to any one of Claims 2 to 7, characterized in that sealing means (28, 29) in addition to the second means shutter (28), integral with the movable piston (22) for, depending on the pressure inside the regulation chamber (13), change the degree opening the inlet (25) of the regulation chamber (13), said first and second sealing means (28, 29) being arranged so that in closed position of the inlet (25), the outlet (26) is at least partially open. Valve selon l'une quelconque des revendications 2 à 8 caractérisée en ce que l'orifice d'entrée (25) est disposé dans le fond (21) de la chambre de régulation, l'orifice de sortie (26) étant situé sur une paroi latérale (2) de la chambre de régulation (13), à distance d du fond (21) de la chambre de régulation, une lèvre annulaire (30) assurant l'étanchéité entre la chambre de régulation (13) et le corps de valve (2), tout autour de ladite chambre de régulation, ladite lèvre d'étanchéité (30) étant disposée axialement entre le fond (21) de la chambre de régulation et l'orifice de sortie (26).Valve according to any one of Claims 2 to 8, characterized in that that the inlet (25) is disposed in the bottom (21) of the regulation, the outlet orifice (26) being located on a side wall (2) of the regulation chamber (13), at a distance d from the bottom (21) of the regulation, an annular lip (30) ensuring the seal between the regulation (13) and the valve body (2), all around said chamber regulation, said sealing lip (30) being disposed axially between the bottom (21) of the regulation chamber and the outlet orifice (26). Valve selon l'une quelconque des revendications 1 à 9 caractérisée en ce que le passage de sortie (10) est formé d'une tige de valve (9, 10) solidaire de la chambre de régulation (13), ladite chambre de régulation (13) étant montée sur lesdits premier moyens de rappel élastiques (16), ladite tige de valve (9, 10) comportant une partie émergente hors du corps de valve, et formant un canal de sortie pouvant être mis en communication avec le corps de valve via un passage (17) traversant radialement la tige de valve (9, 10).Valve according to any one of Claims 1 to 9, characterized in that that the outlet passage (10) is formed by a valve stem (9, 10) integral with the regulation chamber (13), said regulation chamber (13) being mounted on said first elastic return means (16), said valve stem (9, 10) having an emerging part outside the valve body, and forming a channel outlet which can be put in communication with the valve body via a passage (17) passing radially through the valve stem (9, 10). Valve selon la revendication 10 caractérisée en ce que, en position fermée de la valve (1), le passage radial (17) est maintenu en regard d'un joint d'étanchéité (6) situé dans la partie supérieure du corps de valve (2).Valve according to claim 10 characterized in that, in position closed of the valve (1), the radial passage (17) is maintained opposite a seal seal (6) located in the upper part of the valve body (2). Valve selon l'une quelconque des revendications 2 à 11 caractérisée en ce que, lorsque la pression à l'intérieur de la chambre de régulation (13) descend sous une valeur prédéterminée, les moyens d'obturation (29) obturent de manière étanche l'orifice de sortie (26) de la chambre de régulation, de manière à interrompre la distribution de produit.Valve according to any one of Claims 2 to 11, characterized in what when the pressure inside the regulating chamber (13) drops below a predetermined value, the shutter means (29) shut off sealingly the outlet orifice (26) of the regulation chamber, so as to interrupt the distribution of product. Récipient (100) pour la distribution sous pression d'un produit, équipé d'une valve (1) selon l'une quelconque des revendications 1 à 12.Container (100) for the distribution under pressure of a product, equipped of a valve (1) according to any one of claims 1 to 12. Récipient (100) selon la revendication 13 caractérisé en ce qu'il comprend un corps (101) définissant un réservoir contenant le produit à distribuer, et dont une extrémité (102) est fermée par un fond (103), l'autre extrémité (104) étant surmontée de ladite valve (1), le moyen d'actionnement de la valve étant constitué d'un bouton poussoir (109).Container (100) according to claim 13 characterized in that it comprises a body (101) defining a reservoir containing the product to be dispensed, and of which one end (102) is closed by a bottom (103), the other end (104) being surmounted by said valve (1), the means for actuating the valve being consisting of a push button (109). Récipient selon la revendication 14 caractérisé en ce que le bouton poussoir comporte des moyens de diffusion (107) pour la sortie du produit, les moyens de diffusion (107) étant constitués d'une buse, notamment tourbillonnaire, d'une grille, ou d'un embout poreux, notamment un fritté ou une mousse à cellules ouvertes.Container according to claim 14 characterized in that the button pusher comprises diffusion means (107) for the outlet of the product, the diffusion means (107) consisting of a nozzle, in particular swirling, a grid, or a porous tip, in particular a sintered or a open cell foam. Utilisation d'un récipient selon l'une quelconque des revendications 13 à 15 pour le conditionnement et la distribution sous pression d'un produit de coiffage, notamment une laque, un spray ou une mousse, ou d'un déodorant, ou d'un produit de soin, notamment un lait, une huile, une crème ou un gel.Use of a container according to any one of claims 13 to 15 for the packaging and distribution under pressure of a product of styling, in particular a hairspray, a spray or a mousse, or a deodorant, or a care product, in particular a milk, an oil, a cream or a gel.
EP98403289A 1998-01-23 1998-12-23 Valve for regulating a fluid flow and container equipped with such a valve Expired - Lifetime EP0931734B1 (en)

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FR9800720A FR2774077B1 (en) 1998-01-23 1998-01-23 VALVE WITH OUTLET FLOW REGULATION, AND CONTAINER PROVIDED WITH SUCH A VALVE
FR9800720 1998-01-23

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EP0931734A1 true EP0931734A1 (en) 1999-07-28
EP0931734B1 EP0931734B1 (en) 2003-03-05

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EP (1) EP0931734B1 (en)
JP (1) JP3024112B2 (en)
CA (1) CA2257485A1 (en)
DE (1) DE69811848T2 (en)
ES (1) ES2194292T3 (en)
FR (1) FR2774077B1 (en)

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FR2774077A1 (en) 1999-07-30
CA2257485A1 (en) 1999-07-23
JPH11263385A (en) 1999-09-28
DE69811848D1 (en) 2003-04-10
FR2774077B1 (en) 2000-04-07
EP0931734B1 (en) 2003-03-05
US6145712A (en) 2000-11-14
JP3024112B2 (en) 2000-03-21
DE69811848T2 (en) 2003-09-04
USRE38207E1 (en) 2003-08-05
ES2194292T3 (en) 2003-11-16

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