EP0764593B1 - Valve for sprayer - Google Patents

Valve for sprayer Download PDF

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Publication number
EP0764593B1
EP0764593B1 EP19960402004 EP96402004A EP0764593B1 EP 0764593 B1 EP0764593 B1 EP 0764593B1 EP 19960402004 EP19960402004 EP 19960402004 EP 96402004 A EP96402004 A EP 96402004A EP 0764593 B1 EP0764593 B1 EP 0764593B1
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EP
European Patent Office
Prior art keywords
valve
control rod
valve body
orifice
product
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
Application number
EP19960402004
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German (de)
French (fr)
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EP0764593A1 (en
Inventor
Jean-Marc Aumegeas
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LOreal SA
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LOreal SA
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Publication date
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Publication of EP0764593A1 publication Critical patent/EP0764593A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action

Definitions

  • the present invention relates to a valve for a sprayer comprising a container capable of containing a spray product and a propellant, said valve comprising a control rod having an interior passage for said product, movable in a valve body between a valve closed position in which said passage is isolated from the interior of the container, and a valve open position in which said passage communicates with the interior of the container to allow drainage of product through said passage, the valve comprising at least one propellant intake port opening into the valve body to make a mixture of product and propellant, and means for closing said orifice when said control rod is in its closed valve position.
  • the sprayer When the sprayer is of the head-to-head type top, i.e. intended to be used with the valve at the top, the product is brought to the valve body via a tube immersing in the product contained in the container to the neighborhood from the bottom of the latter.
  • pressure balancing takes place after closing the valve, between the inside of the valve body and inside the container, causing a leveling of the product contained on the one hand in the valve body and the dip tube and on the other hand in the bottom of the container, so at least one emptying partial product contained in the valve body and the dip tube to the container.
  • the dip tube and valve body are thus fill with a certain amount of propellant which leaves only with each new use the sprayer in pure loss.
  • gas intake orifice thruster is blocked when the control rod is in its position to close the valve, to keep the valve body and the tube diver filled with product after first use of the sprayer because it saves gas propellant, particularly appreciable when the latter is compressed air which is not liquefiable inside the container, and whose volume occupies a significant place inside the container, to the detriment of the product to be sprayed.
  • the object of the present invention is to propose a new valve which prevents after using the sprayer the product contained in the valve body and the dip tube does not empty towards the bottom of the container, and which is relatively constructed simple.
  • control rod and the valve body in its region bordering said gas intake orifice propellant, have clean surfaces to support one on the other in said valve closed position to close said propellant intake port, at least one of said surfaces being tilted relative to the direction of travel of the control rod in the valve body.
  • the closure of the outlet orifice of propellant can be carried out without the aid of fittings sealing in elastomeric material, so that the valve can be produced with a small number of component parts.
  • She can in addition to being used without material compatibility problem for distribute products containing substances such as solvents, which may cause materials to swell elastomers traditionally used for the production of seals.
  • said surfaces are conical.
  • the rod control has a radial extension at one axial end which one of said surfaces is defined.
  • said surfaces are coaxial and centered on a central axis of the control rod.
  • said surfaces are coaxial and offset from a central axis of the rod control.
  • one of said surfaces is defined on an insert on the rest of the control rod.
  • the valve body then advantageously has a base to be fixed on the rest of the valve body after installation of said patch.
  • the body of valve has a shoulder serving to support one end of a return spring of the control rod in its rest position, and delimits one end of a passage in which the rod extends control with a thin ring clearance.
  • the invention also relates to a sprayer equipped with a valve as mentioned above, and in particular but not exclusively a sprayer in which said propellant gas is compressed air.
  • FIG. 1 shows a valve 1 conforming to a first embodiment of the invention.
  • This valve 1 comprises a control rod 2 capable of move in a valve body 3 between an open position of the valve, corresponding to FIG. 1, and a closed position of valve, corresponding to figure 2.
  • Valve 1 is fixed on a container, known in itself and not shown, via a cup 4 to be crimped at its periphery on the container.
  • the rod control 2 has a push button at its upper end known in itself and not shown for the sake of clarity of the drawing, having a spray nozzle.
  • the valve body 3 has at its upper end an annular boss 5 crimped in a housing central 6 of the cup 4. The latter is provided with an opening 7 for the passage of the control rod 2.
  • a sealing washer 8 is interposed axially between the upper end edge 9 of the valve body 3 and the wall 10 of the housing 6 bordering the opening 7.
  • the control rod 2 slides tightly in contact with the aperture 11 of axis X of the sealing washer 8.
  • the control rod 2 is hollow from its end edge upper to form an axial channel 12 for the passage of the product, this channel 12 emerging through a radial bore 13 on the periphery of the control rod 2.
  • the radial bore 13 opens into the thickness of the washer 8 and is found closed as shown in Figure 2.
  • the drilling radial 13 opens below the washer 8, into a cavity 14 of the valve body 3, to be supplied with a mixture of product and propellant gas to be sprayed as will be specified below.
  • a helical spring 17 for returning the control rod 2 is wound on a cylindrical portion 18 of the control rod 2, serving as a guide.
  • the spring 17 bears axially at its end upper on a shoulder 19, delimiting the upper portion 18, and at its lower end on a shoulder 20 of the valve body 3, delimiting the cavity 14 below.
  • portion 18 of the control rod 2 is extended below by a portion 21 of smaller diameter, extending through a passage 22 of valve body 3. Passage 22 opens out below in a housing 23 of the valve body 3.
  • the housing 23 has the shape of a right angle bend, comprising a lower branch 23 a extending radially and perpendicular to the axis X from the center of the valve body and an upper branch 23 b eccentric, extending upwards, parallel to the axis X, at the upper end of which opens an orifice 24 for taking propellant gas.
  • the orifice 24 communicates by a radial bore 25 with an orifice 26 located on the external periphery of the valve body.
  • the control rod 2 has a lower part 27 in U-shaped hook shape, able to move in the housing 23 to shut off, when the control rod 2 is returned by the spring 17 in its rest position, the orifice 24 for taking propellant gas. The control rod 2 releases it when it is pressed.
  • the region of the valve body 3 bordering the orifice below 24 defines a conical surface 28 which widens downwards
  • the part lower 27 of the control rod 2 is constituted by a part U-shaped, fixed at one end to the rest of the rod control 2 in the extension of the portion 21, and having the other end a conical surface 29 shaped to cooperate with the conical surface 28 to close the orifice 24.
  • the part 27 has a blind bore 30 intended to receive a part of complementary shape formed at the lower end of the portion 21 of the control rod 2.
  • the angle at the top of the surface conical 28 is about sixty degrees and the angle at apex of conical surface 29 is about half.
  • the housing 23 is closed at its lower end by a part 31 attached to the rest of the valve body 3, this part 31 being fixed on the rest of the valve body 3 after fitting the part 27 on the portion 21 of the control rod 2.
  • Part 31 below comprises a tip 32 intended to be inserted in a dip tube known per se and not shown, to supply the valve body 3 in product.
  • valve 1 shown in Figures 1 and 2 The operation of the valve 1 shown in Figures 1 and 2 is as follows. At rest, as shown in Figure 2, the radial bore 13 opens into the thickness of the washer 8 and is finds it blocked. The sealing lip 15 is applied to the face lower 16 of the washer 8 under the action of the return spring 17. The orifice 24 is closed by the conical surface 29 of the part 27. Thus, the cavity 14 and the housing 23 inside the valve body can remain filled with product after the first use of the valve, to dispense the product at the next opening of the valve, without first starting with propellant gas only.
  • valve 1 ' According to a second embodiment of the invention.
  • the orifice 24 ′ for propellant gas intake is located in the new embodiment described at the lower end of a tubular end piece 33 ′ projecting downwards inside the housing 23 ′.
  • the lower part 27 ′ of the control rod 2 ′ consists of an insert, in the form of a right angle bend, having a vertical branch 27 ′ a situated in the extension of the portion 21 of the control rod 2 ′ , and a horizontal branch 27 ′ b oriented radially outward, on the upper surface of which a conical recess 34 ′ is formed.
  • This recess 34 ' defines a conical surface 29' which widens upwards.
  • the tubular end piece 33 ' defines a conical surface 28' coaxial with the conical surface 29 ', externally bordering the orifice 24', and the recess 34 'is capable of coming to bear against the tubular end piece 33' to close the 'orifice 24' when the control rod 2 'is returned to its rest position by the spring 17, as shown in Figure 4.
  • the housing 23' is closed below by an attached bottom 31 as described above and laterally, on the side of the radial bore 25 ', by a wall 35 which forms part of the valve body 3'.
  • the recess 34' In the closed position of the valve 1 'the recess 34' is in pressing against the lower end of the tubular end piece 33 'of so as to seal the orifice 24 ′ of propellant gas intake, so that the inside of the valve body is isolated from the inside of the container and the product prevented from going back down into the dip tube.
  • FIGS. 5 and 6 show a 1 '' valve, in accordance with a third embodiment of the invention.
  • Valve 1 '' differs from valves 1 and 1 'previously described by the geometry of the lower part 27 '' of the control rod 2 '' and that of the region of the valve body 3 '' on which comes to bear the 27 '' part to close a 24 '' propellant intake port.
  • the 3 '' valve body has a 23 '' housing at the bottom radially delimited by a 28 '' conical surface centered on the X axis and which leads to one end of a 25 '' radial channel for define the aforementioned 24 '' orifice. This 25 '' radial channel leads to its another 26 '' end on the periphery of the 3 '' valve body.
  • the conical surface 28 '' extends the passage 22 below.
  • the lower part 27 '' of the control rod 2 '' is in the form of a truncated cone 27 '' b extended above by a barrel 27 '' a used for fixing on the portion 21 of the control rod 2 ''.
  • the lower part 27 '' has a conical surface 29 "radially delimiting the truncated cone 27 '' b , at the same angle at the top as that of the conical surface 28 '', and intended to bear on the latter to close the 'orifice 24'', when the control rod 2''is at rest, as shown in FIG. 6.
  • the lower part 27 '' is placed on the portion 21 of the control rod 2 '' before fixing the part 31 supporting end piece 32.

Description

La présente invention concerne une valve pour un pulvérisateur comprenant un récipient apte à contenir un produit à pulvériser et un gaz propulseur, ladite valve comportant une tige de commande présentant un passage intérieur pour ledit produit, mobile dans un corps de valve entre une position de fermeture de la valve dans laquelle ledit passage est isolé de l'intérieur du récipient, et une position d'ouverture de la valve dans laquelle ledit passage communique avec l'intérieur du récipient pour permettre un écoulement de produit à travers ledit passage, la valve comportant au moins un orifice de prise de gaz propulseur débouchant dans le corps de valve pour réaliser un mélange de produit et de gaz propulseur, et des moyens pour fermer ledit orifice quand ladite tige de commande est dans sa position de fermeture de la valve.The present invention relates to a valve for a sprayer comprising a container capable of containing a spray product and a propellant, said valve comprising a control rod having an interior passage for said product, movable in a valve body between a valve closed position in which said passage is isolated from the interior of the container, and a valve open position in which said passage communicates with the interior of the container to allow drainage of product through said passage, the valve comprising at least one propellant intake port opening into the valve body to make a mixture of product and propellant, and means for closing said orifice when said control rod is in its closed valve position.

Lorsque le pulvérisateur est du type à utilisation tête en haut, c'est-à-dire est destiné à être utilisé avec la valve en haut, le produit est amené au corps de valve par l'intermédiaire d'un tube plongeant dans le produit contenu dans le récipient jusqu'au voisinage du fond de ce dernier.When the sprayer is of the head-to-head type top, i.e. intended to be used with the valve at the top, the product is brought to the valve body via a tube immersing in the product contained in the container to the neighborhood from the bottom of the latter.

Dans certaines valves connues un équilibrage de pression a lieu après la fermeture de la valve, entre l'intérieur du corps de valve et l'intérieur du récipient, provoquant une mise à niveau du produit contenu d'une part dans le corps de valve et le tube plongeur et d'autre part dans le fond du récipient, donc un vidage au moins partiel du produit contenu dans le corps de valve et le tube plongeur vers le récipient. Le tube plongeur et le corps de valve se remplissent ainsi d'une certaine quantité de gaz propulseur qui quitte seul à chaque nouvelle utilisation le pulvérisateur en pure perte.In some known valves pressure balancing takes place after closing the valve, between the inside of the valve body and inside the container, causing a leveling of the product contained on the one hand in the valve body and the dip tube and on the other hand in the bottom of the container, so at least one emptying partial product contained in the valve body and the dip tube to the container. The dip tube and valve body are thus fill with a certain amount of propellant which leaves only with each new use the sprayer in pure loss.

Il est donc avantageux que l'orifice de prise de gaz propulseur soit obturé quand la tige de commande est dans sa position de fermeture de la valve, pour conserver le corps de valve et le tube plongeur remplis de produit après la première utilisation du pulvérisateur, car cela permet de réaliser une économie de gaz propulseur, particulièrement appréciable lorsque ce dernier est de l'air comprimé qui n'est pas liquéfiable à l'intérieur du récipient, et dont le volume occupe une place non négligeable à l'intérieur du récipient, au détriment du produit à pulvériser. It is therefore advantageous for the gas intake orifice thruster is blocked when the control rod is in its position to close the valve, to keep the valve body and the tube diver filled with product after first use of the sprayer because it saves gas propellant, particularly appreciable when the latter is compressed air which is not liquefiable inside the container, and whose volume occupies a significant place inside the container, to the detriment of the product to be sprayed.

La présente invention a pour objet de proposer une nouvelle valve qui permette d'empêcher qu'après utilisation du pulvérisateur le produit contenu dans le corps de valve et le tube plongeur ne se vide vers le fond du récipient, et qui soit de construction relativement simple.The object of the present invention is to propose a new valve which prevents after using the sprayer the product contained in the valve body and the dip tube does not empty towards the bottom of the container, and which is relatively constructed simple.

Elle y parvient par le fait que la tige de commande, et le corps de valve dans sa région bordant ledit orifice de prise de gaz propulseur, présentent des surfaces propres à prendre appui l'une sur l'autre dans ladite position de fermeture de la valve pour fermer ledit orifice de prise de gaz propulseur, l'une au moins desdites surfaces étant inclinée par rapport à la direction de déplacement de la tige de commande dans le corps de valve.It achieves this by the fact that the control rod, and the valve body in its region bordering said gas intake orifice propellant, have clean surfaces to support one on the other in said valve closed position to close said propellant intake port, at least one of said surfaces being tilted relative to the direction of travel of the control rod in the valve body.

Ainsi, grâce à l'invention, la fermeture de l'orifice de prise de gaz propulseur peut s'effectuer sans l'aide de garnitures d'étanchéité en matériau élastomère, de sorte que la valve peut être réalisée avec un faible nombre de pièces constitutives. Elle peut en outre être utilisée sans problème de compatibilité de matière pour distribuer des produits contenant des substances telles que des solvants, susceptibles de provoquer le gonflement des matériaux élastomères traditionnellement utilisés pour la réalisation des garnitures d'étanchéité.Thus, thanks to the invention, the closure of the outlet orifice of propellant can be carried out without the aid of fittings sealing in elastomeric material, so that the valve can be produced with a small number of component parts. She can in addition to being used without material compatibility problem for distribute products containing substances such as solvents, which may cause materials to swell elastomers traditionally used for the production of seals.

Dans une réalisation particulière de l'invention, lesdites surfaces sont coniques.In a particular embodiment of the invention, said surfaces are conical.

Dans une réalisation particulière de l'invention, la tige de commande présente à une extrémité axiale une extension radiale sur laquelle est définie l'une desdites surfaces.In a particular embodiment of the invention, the rod control has a radial extension at one axial end which one of said surfaces is defined.

Dans une autre réalisation particulière de l'invention, lesdites surfaces sont coaxiales et centrées sur un axe central de la tige de commande.In another particular embodiment of the invention, said surfaces are coaxial and centered on a central axis of the control rod.

Dans une autre réalisation de l'invention, lesdites surfaces sont coaxiales et excentrées par rapport à un axe central de la tige de commande.In another embodiment of the invention, said surfaces are coaxial and offset from a central axis of the rod control.

Dans une réalisation particulière de l'invention, l'une desdites surfaces est définie sur une pièce rapportée sur le reste de la tige de commande. Le corps de valve présente alors avantageusement un fond à fixer sur le reste du corps de valve après mise en place de ladite pièce rapportée. In a particular embodiment of the invention, one of said surfaces is defined on an insert on the rest of the control rod. The valve body then advantageously has a base to be fixed on the rest of the valve body after installation of said patch.

Dans une réalisation particulière de l'invention, le corps de valve présente un épaulement servant d'appui à une extrémité d'un ressort de rappel de la tige de commande dans sa position de repos, et délimite une extrémité d'un passage dans lequel s'étend la tige de commande en ménageant un jeu annulaire de faible épaisseur.In a particular embodiment of the invention, the body of valve has a shoulder serving to support one end of a return spring of the control rod in its rest position, and delimits one end of a passage in which the rod extends control with a thin ring clearance.

L'invention a encore pour objet un pulvérisateur équipé d'une valve telle que précitée, et notamment mais non exclusivement un pulvérisateur dans lequel ledit gaz propulseur est de l'air comprimé.The invention also relates to a sprayer equipped with a valve as mentioned above, and in particular but not exclusively a sprayer in which said propellant gas is compressed air.

D'autres caractéristiques et avantages de la présente invention apparaítront à la lecture de la description détaillée qui va suivre, de trois exemples de réalisation non limitatifs de l'invention, et à l'examen du dessin annexé sur lequel :

  • la figure 1 est une vue en coupe axiale, schématique, d'une valve conforme à un premier exemple de réalisation de l'invention, la tige de commande étant représentée en position d'ouverture de la valve,
  • la figure 2 est une vue analogue à la figure 1, montrant la valve en position fermée,
  • la figure 3 est une vue en coupe axiale, schématique, d'une valve conforme à un deuxième exemple de réalisation de l'invention, la tige de commande étant représentée en position d'ouverture de la valve,
  • la figure 4 montre la valve représentée sur la figure 3 en position fermée,
  • la figure 5 est une vue en coupe axiale, schématique, d'une valve conforme à un troisième exemple de réalisation de l'invention, la tige de commande étant représentée en position d'ouverture de la valve, et,
  • la figure 6 montre la valve représentée sur la figure 5 en position fermée.
Other characteristics and advantages of the present invention will appear on reading the detailed description which follows, of three nonlimiting exemplary embodiments of the invention, and on examining the appended drawing in which:
  • FIG. 1 is a diagrammatic view in axial section of a valve according to a first embodiment of the invention, the control rod being shown in the valve open position,
  • FIG. 2 is a view similar to FIG. 1, showing the valve in the closed position,
  • FIG. 3 is a schematic view in axial section of a valve according to a second embodiment of the invention, the control rod being shown in the valve open position,
  • FIG. 4 shows the valve shown in FIG. 3 in the closed position,
  • FIG. 5 is a schematic view in axial section of a valve according to a third embodiment of the invention, the control rod being shown in the open position of the valve, and,
  • Figure 6 shows the valve shown in Figure 5 in the closed position.

On a représenté sur la figure 1 une valve 1 conforme à un premier exemple de réalisation de l'invention.FIG. 1 shows a valve 1 conforming to a first embodiment of the invention.

Cette valve 1 comporte une tige de commande 2 apte à se déplacer dans un corps de valve 3 entre une position d'ouverture de la valve, correspondant à la figure 1, et une position de fermeture de valve, correspondant à la figure 2. La valve 1 est fixée sur un récipient, connu en lui-même et non représenté, par l'intermédiaire d'une coupelle 4 à sertir à sa périphérie sur le récipient. La tige de commande 2 est munie à son extrémité supérieure d'un bouton-poussoir connu en lui-même et non représenté dans un souci de clarté du dessin, comportant une buse de pulvérisation. Le corps de valve 3 présente à son extrémité supérieure un bossage annulaire 5 serti dans un logement central 6 de la coupelle 4. Cette dernière est munie d'une ouverture 7 pour le passage de la tige de commande 2. Une rondelle d'étanchéité 8 est interposée axialement entre la tranche d'extrémité supérieure 9 du corps de valve 3 et la paroi 10 du logement 6 bordant l'ouverture 7. La tige de commande 2 coulisse de façon étanche au contact de l'ajour 11 d'axe X de la rondelle d'étanchéité 8.This valve 1 comprises a control rod 2 capable of move in a valve body 3 between an open position of the valve, corresponding to FIG. 1, and a closed position of valve, corresponding to figure 2. Valve 1 is fixed on a container, known in itself and not shown, via a cup 4 to be crimped at its periphery on the container. The rod control 2 has a push button at its upper end known in itself and not shown for the sake of clarity of the drawing, having a spray nozzle. The valve body 3 has at its upper end an annular boss 5 crimped in a housing central 6 of the cup 4. The latter is provided with an opening 7 for the passage of the control rod 2. A sealing washer 8 is interposed axially between the upper end edge 9 of the valve body 3 and the wall 10 of the housing 6 bordering the opening 7. The control rod 2 slides tightly in contact with the aperture 11 of axis X of the sealing washer 8.

La tige de commande 2 est creuse depuis sa tranche d'extrémité supérieure pour former un canal axial 12 pour le passage du produit, ce canal 12 débouchant par un perçage radial 13 sur la périphérie de la tige de commande 2. En position de repos de la tige de commande 2, le perçage radial 13 débouche dans l'épaisseur de la rondelle 8 et se trouve obturé comme représenté sur la figure 2. En position d'ouverture de la valve, lorsque la tige de commande 2 est enfoncée dans la direction de l'axe X dans le corps de valve 3, le perçage radial 13 débouche en deça de la rondelle 8, dans une cavité 14 du corps de valve 3, pour être alimenté en un mélange de produit et de gaz propulseur à pulvériser comme cela sera précisé dans la suite.The control rod 2 is hollow from its end edge upper to form an axial channel 12 for the passage of the product, this channel 12 emerging through a radial bore 13 on the periphery of the control rod 2. In the rest position of the control rod 2, the radial bore 13 opens into the thickness of the washer 8 and is found closed as shown in Figure 2. In position valve opening, when control rod 2 is pressed in the direction of the X axis in the valve body 3, the drilling radial 13 opens below the washer 8, into a cavity 14 of the valve body 3, to be supplied with a mixture of product and propellant gas to be sprayed as will be specified below.

Une lèvre annulaire d'étanchéité 15, dirigée vers le haut, et se raccordant au reste de la tige de commande 2 en deça du perçage radial 13, s'applique contre la face inférieure 16 de la rondelle 8 lorsque la tige de commande 2 est au repos, pour améliorer l'étanchéité de la fermeture de la valve.An annular sealing lip 15, directed upwards, and connecting to the rest of the control rod 2 below the hole radial 13, presses against the underside 16 of the washer 8 when the control rod 2 is at rest, to improve the tightness of the valve closure.

Un ressort hélicoïdal 17 de rappel de la tige de commande 2 est enroulé sur une portion cylindrique 18 de la tige de commande 2, servant de guide. Le ressort 17 prend appui axialement à son extrémité supérieure sur un épaulement 19, délimitant supérieurement la portion 18, et à son extrémité inférieure sur un épaulement 20 du corps de valve 3, délimitant inférieurement la cavité 14. La portion 18 de la tige de commande 2 est prolongée inférieurement par une portion 21 de plus petit diamètre, s'étendant au travers d'un passage 22 du corps de valve 3. Le passage 22 débouche inférieurement dans un logement 23 du corps de valve 3.A helical spring 17 for returning the control rod 2 is wound on a cylindrical portion 18 of the control rod 2, serving as a guide. The spring 17 bears axially at its end upper on a shoulder 19, delimiting the upper portion 18, and at its lower end on a shoulder 20 of the valve body 3, delimiting the cavity 14 below. portion 18 of the control rod 2 is extended below by a portion 21 of smaller diameter, extending through a passage 22 of valve body 3. Passage 22 opens out below in a housing 23 of the valve body 3.

Dans l'exemple de réalisation décrit, le logement 23 présente la forme d'un coude à angle droit, comportant une branche inférieure 23a s'étendant radialement et perpendiculairement à l'axe X depuis le centre du corps de valve et une branche supérieure 23b excentrée, s'étendant vers le haut, parallèlement à l'axe X, à l'extrémité supérieure de laquelle débouche un orifice 24 de prise de gaz propulseur. L'orifice 24 communique par un perçage radial 25 avec un orifice 26 situé sur la périphérie externe du corps de valve.In the embodiment described, the housing 23 has the shape of a right angle bend, comprising a lower branch 23 a extending radially and perpendicular to the axis X from the center of the valve body and an upper branch 23 b eccentric, extending upwards, parallel to the axis X, at the upper end of which opens an orifice 24 for taking propellant gas. The orifice 24 communicates by a radial bore 25 with an orifice 26 located on the external periphery of the valve body.

La tige de commande 2 présente une partie inférieure 27 en forme de crochet en U, apte à se déplacer dans le logement 23 pour obturer, lorsque la tige de commande 2 est rappelée par le ressort 17 dans sa position de repos, l'orifice 24 de prise de gaz propulseur. La tige de commande 2 libère celui-ci lorsqu'elle est enfoncée.The control rod 2 has a lower part 27 in U-shaped hook shape, able to move in the housing 23 to shut off, when the control rod 2 is returned by the spring 17 in its rest position, the orifice 24 for taking propellant gas. The control rod 2 releases it when it is pressed.

La région du corps de valve 3 bordant inférieurement l'orifice 24 définit une surface conique 28 s'évasant vers le bas, et la partie inférieure 27 de la tige de commande 2 est constituée par une pièce rapportée en forme de U, fixée à une extrémité sur le reste de la tige de commande 2 dans le prolongement de la portion 21, et présentant à l'autre extrémité une surface conique 29 conformée pour coopérer avec la surface conique 28 pour fermer l'orifice 24. Dans l'exemple décrit, la pièce 27 présente un perçage borgne 30 destiné à recevoir une partie de forme complémentaire formée à l'extrémité inférieure de la portion 21 de la tige de commande 2. L'angle au sommet de la surface conique 28 est d'environ une soixantaine de degrés et l'angle au sommet de la surface conique 29 est d'environ la moitié.The region of the valve body 3 bordering the orifice below 24 defines a conical surface 28 which widens downwards, and the part lower 27 of the control rod 2 is constituted by a part U-shaped, fixed at one end to the rest of the rod control 2 in the extension of the portion 21, and having the other end a conical surface 29 shaped to cooperate with the conical surface 28 to close the orifice 24. In the example described, the part 27 has a blind bore 30 intended to receive a part of complementary shape formed at the lower end of the portion 21 of the control rod 2. The angle at the top of the surface conical 28 is about sixty degrees and the angle at apex of conical surface 29 is about half.

Le logement 23 est fermé à son extrémité inférieure par une pièce 31 rapportée sur le reste du corps de valve 3, cette pièce 31 étant fixée sur le reste du corps de valve 3 après mise en place de la pièce 27 sur la portion 21 de la tige de commande 2. La pièce 31 comporte inférieurement un embout 32 destiné à être inséré dans un tube plongeur connu en lui-même et non représenté, pour alimenter le corps de valve 3 en produit.The housing 23 is closed at its lower end by a part 31 attached to the rest of the valve body 3, this part 31 being fixed on the rest of the valve body 3 after fitting the part 27 on the portion 21 of the control rod 2. Part 31 below comprises a tip 32 intended to be inserted in a dip tube known per se and not shown, to supply the valve body 3 in product.

Le fonctionnement de la valve 1 représentée sur les figures 1 et 2 est le suivant. Au repos, comme représenté sur la figure 2, le perçage radial 13 débouche dans l'épaisseur de la rondelle 8 et se trouve obturé. La lèvre d'étanchéité 15 s'applique sur la face inférieure 16 de la rondelle 8 sous l'action du ressort de rappel 17. L'orifice 24 est obturé par la surface conique 29 de la pièce 27. Ainsi, la cavité 14 et le logement 23 à l'intérieur du corps de valve peuvent rester remplis de produit après la première utilisation de la valve, pour distribuer le produit à la prochaine ouverture de la valve, sans départ au préalable de gaz propulseur seul.The operation of the valve 1 shown in Figures 1 and 2 is as follows. At rest, as shown in Figure 2, the radial bore 13 opens into the thickness of the washer 8 and is finds it blocked. The sealing lip 15 is applied to the face lower 16 of the washer 8 under the action of the return spring 17. The orifice 24 is closed by the conical surface 29 of the part 27. Thus, the cavity 14 and the housing 23 inside the valve body can remain filled with product after the first use of the valve, to dispense the product at the next opening of the valve, without first starting with propellant gas only.

Lorsque l'utilisateur appuie sur le bouton poussoir monté à l'extrémité supérieure de la tige de commande 2, l'enfoncement de cette dernière selon l'axe X libère le perçage radial 13 et l'orifice 24, de sorte qu'un écoulement de produit peut s'effectuer vers l'extérieur du récipient. Le produit parvenant dans le logement 23 par l'intermédiaire du tube plongeur relié à l'embout 32 est mélangé au gaz propulseur arrivant par l'orifice 24. Le diamètre du canal 25 et celui de l'orifice 24 sont choisis de sorte que l'écoulement de gaz propulseur subit à travers ces derniers une perte de charge suffisante pour ne pas empêcher le produit de remonter dans le tube plongeur et d'atteindre le corps de valve 3. Le produit et le gaz propulseur se mélangent alors pour constituer un mélange gaz-liquide qui est distribué sous la forme d'un aérosol par la buse du bouton-poussoir.When the user presses the push button mounted the upper end of the control rod 2, the depression of the latter along the X axis releases the radial bore 13 and the orifice 24, so that a product flow can take place towards the outside of the container. The product reaching the housing 23 by the intermediate of the dip tube connected to the end piece 32 is mixed with propellant gas arriving through the orifice 24. The diameter of the channel 25 and that of port 24 are chosen so that the gas flow propellant suffers a sufficient pressure drop through them so as not to prevent the product from going back up into the dip tube and reach the valve body 3. The product and the propellant are then mix to form a gas-liquid mixture which is dispensed as an aerosol through the push button nozzle.

On a représenté sur les figures 3 et 4 une valve 1' conforme à un deuxième exemple de réalisation de l'invention.There is shown in Figures 3 and 4 a valve 1 'according to a second embodiment of the invention.

On a utilisé dans la suite de la description et sur les figures des mêmes numéros de référence pour désigner deux éléments identiques et des mêmes numéros de référence affectés d'un ' ou d'un '' pour désigner des éléments fonctionnellement analogues, qui pourront ne pas être décrits à nouveau dans le détail.We have used in the following description and in the figures of the same reference numbers to designate two identical elements and the same reference numbers assigned with a 'or' for designate functionally analogous elements, which may not be described again in detail.

La valve 1' diffère de la valve 1 précédemment décrite par la forme de la partie inférieure 27' de la tige de commande 2' et par la forme de la région du corps de valve 3' bordant l'orifice 24' de prise de gaz propulseur.The valve 1 'differs from the valve 1 previously described by the shape of the lower part 27 'of the control rod 2' and by the shape of the region of the valve body 3 'bordering the orifice 24' of grip of propellant.

Plus précisément, l'orifice 24' de prise de gaz propulseur se situe dans le nouvel exemple de réalisation décrit à l'extrémité inférieure d'un embout tubulaire 33' formant saillie vers le bas à l'intérieur du logement 23'. La partie inférieure 27' de la tige de commande 2' est constituée d'une pièce rapportée, en forme de coude à angle droit, présentant une branche verticale 27'a située dans le prolongement de la portion 21 de la tige de commande 2', et une branche horizontale 27'b orientée radialement vers l'extérieur, sur la surface supérieure de laquelle est formé un évidement conique 34'. Cet évidement 34' définit une surface conique 29' s'évasant vers le haut. L'embout tubulaire 33' définit une surface conique 28' coaxiale à la surface conique 29', bordant extérieurement l'orifice 24', et l'évidement 34' est apte à venir en appui contre l'embout tubulaire 33' pour fermer l'orifice 24' lorsque la tige de commande 2' est rappelée dans sa position de repos par le ressort 17, comme représenté sur la figure 4. Le logement 23' est fermé inférieurement par un fond rapporté 31 comme décrit précédemment et latéralement, du côté du perçage radial 25', par une paroi 35 qui fait partie du corps de valve 3'.More specifically, the orifice 24 ′ for propellant gas intake is located in the new embodiment described at the lower end of a tubular end piece 33 ′ projecting downwards inside the housing 23 ′. The lower part 27 ′ of the control rod 2 ′ consists of an insert, in the form of a right angle bend, having a vertical branch 27 ′ a situated in the extension of the portion 21 of the control rod 2 ′ , and a horizontal branch 27 ′ b oriented radially outward, on the upper surface of which a conical recess 34 ′ is formed. This recess 34 'defines a conical surface 29' which widens upwards. The tubular end piece 33 'defines a conical surface 28' coaxial with the conical surface 29 ', externally bordering the orifice 24', and the recess 34 'is capable of coming to bear against the tubular end piece 33' to close the 'orifice 24' when the control rod 2 'is returned to its rest position by the spring 17, as shown in Figure 4. The housing 23' is closed below by an attached bottom 31 as described above and laterally, on the side of the radial bore 25 ', by a wall 35 which forms part of the valve body 3'.

En position de fermeture de la valve 1' l'évidement 34' est en appui contre l'extrémité inférieure de l'embout tubulaire 33' de manière à obturer l'orifice 24' de prise de gaz propulseur, de sorte que l'intérieur du corps de valve est isolé de l'intérieur du récipient et le produit empêché de redescendre dans le tube plongeur.In the closed position of the valve 1 'the recess 34' is in pressing against the lower end of the tubular end piece 33 'of so as to seal the orifice 24 ′ of propellant gas intake, so that the inside of the valve body is isolated from the inside of the container and the product prevented from going back down into the dip tube.

On a représenté sur les figures 5 et 6 une valve 1'', conforme à un troisième exemple de réalisation de l'invention.FIGS. 5 and 6 show a 1 '' valve, in accordance with a third embodiment of the invention.

La valve 1'' diffère des valves 1 et 1' précédemment décrites par la géométrie de la partie inférieure 27'' de la tige de commande 2'' et celle de la région du corps de valve 3'' sur laquelle vient en appui la partie 27'' pour fermer un orifice 24'' de prise de gaz propulseur. Le corps de valve 3'' présente en partie inférieure un logement 23'' délimité radialement par une surface conique 28'' centrée sur l'axe X et sur laquelle débouche une extrémité d'un canal radial 25'' pour définir l'orifice 24'' précité. Ce canal radial 25'' débouche à son autre extrémité en 26'' sur la périphérie du corps de valve 3''.Valve 1 '' differs from valves 1 and 1 'previously described by the geometry of the lower part 27 '' of the control rod 2 '' and that of the region of the valve body 3 '' on which comes to bear the 27 '' part to close a 24 '' propellant intake port. The 3 '' valve body has a 23 '' housing at the bottom radially delimited by a 28 '' conical surface centered on the X axis and which leads to one end of a 25 '' radial channel for define the aforementioned 24 '' orifice. This 25 '' radial channel leads to its another 26 '' end on the periphery of the 3 '' valve body.

La surface conique 28'' prolonge inférieurement le passage 22. La partie inférieure 27'' de la tige de commande 2'' se présente sous la forme d'un tronc de cône 27''b prolongé supérieurement par un fût 27''a servant à la fixation sur la portion 21 de la tige de commande 2''. La partie inférieure 27'' présente une surface conique 29" délimitant radialement le tronc de cône 27''b, de même angle au sommet que celui de la surface conique 28'', et destinée à venir en appui sur cette dernière pour fermer l'orifice 24'', lorsque la tige de commande 2'' est au repos, comme représenté sur la figure 6.The conical surface 28 '' extends the passage 22 below. The lower part 27 '' of the control rod 2 '' is in the form of a truncated cone 27 '' b extended above by a barrel 27 '' a used for fixing on the portion 21 of the control rod 2 ''. The lower part 27 '' has a conical surface 29 "radially delimiting the truncated cone 27 '' b , at the same angle at the top as that of the conical surface 28 '', and intended to bear on the latter to close the 'orifice 24'', when the control rod 2''is at rest, as shown in FIG. 6.

La partie inférieure 27'' est mise en place sur la portion 21 de la tige de commande 2'' avant la fixation de la pièce 31 supportant l'embout 32. The lower part 27 '' is placed on the portion 21 of the control rod 2 '' before fixing the part 31 supporting end piece 32.

Bien entendu, l'invention n'est pas limitée aux trois exemples de réalisation qui viennent d'être décrits. On peut notamment, sans sortir du cadre de la présente invention, modifier la géométrie des parties coopérantes de la tige de commande et du corps de valve destinées à fermer l'orifice de prise de gaz propulseur.Of course, the invention is not limited to the three examples which have just been described. We can in particular, without depart from the scope of the present invention, modify the geometry of the cooperating parts of control rod and valve body intended to close the propellant gas intake opening.

Claims (10)

  1. Valve for sprayer comprising a container capable of containing a product to be dispensed and a propellant gas, the said valve including a control rod (2; 2'; 2'') having an inner passage (12) for the said product which can move in a valve body (3; 3'; 3'') between a closure position of the valve (1), in which the said passage (12) is isolated from the inside of the container, and an open position of the valve, in which the said passage (12) communicates with the inside of the container in order to allow a flow of product through the said passage (12), the valve (1) including at least one orifice (24, 24', 24'') for the take-off of propellant gas opening out in the valve body (3; 3'; 3'') with a view to mixing the product and the propellant gas, and means for closing the said orifice (24, 24', 24'') when the control rod (2; 2'; 2'') is in the closure position of the valve (1), characterized in that the control rod (2; 2'; 2'') and the region of the valve body (3; 3'; 3'') bordering the said orifice (24; 24'; 24'') have surfaces (28, 29; 28', 29'; 28'', 29'') suitable for bearing on one another when the control rod (2; 2'; 2'') is in the said closure position of the valve (1) in order to close the said orifice (24, 24', 24''), at least one of the said surfaces being inclined with respect to the direction of displacement (X) of the control rod (2; 2'; 2'') in the valve body (3; 3'; 3'').
  2. Valve according to Claim 1, characterized in that the said surfaces (28, 29; 28', 29'; 28'', 29'') are conical.
  3. Valve according to one of Claims 1 or 2, characterized in that the control rod (2; 2'; 2'') has, at an axial end, a radial extension on which one (28; 28'; 28'') of the said inclined surfaces is defined.
  4. Valve according to any one of Claims 1 to 3, characterized in that the said surfaces (28'', 29'') are coaxial, centred on a central axis (X) of the control rod (2'').
  5. Valve according to any one of Claims 1 to 3, characterized in that the said surfaces (28, 29; 28', 29') are coaxial, off-centre with respect to a central axis of the control rod (2; 2').
  6. Valve according to any one of Claims 1 to 5, characterized in that one (28; 28'; 28'') of the said inclined surfaces is defined on a piece (27; 27'; 27'') attached on the rest of the control rod.
  7. Valve according to Claim 6, characterized in that the valve body (3; 3'; 3'') has a base (31; 31'; 31'') attached on the rest of the valve body (3; 3'; 3'') after all the control rod (2; 2'; 2'') has been positioned.
  8. Valve according to any one of Claims 1 to 7, characterized in that the said valve body (3; 3'; 3'') has a shoulder (20) serving as support for one end of a spring (17) for returning the control rod (2; 2'; 2'') towards its rest position, this shoulder delimiting an end of a passage (22) into which the control rod (2; 2'; 2'') extends, with narrow annular clearance.
  9. Sprayer equipped with a valve (1; 1', 1''), as defined in any one of the preceding claims.
  10. Sprayer according to Claim 9, characterized in that it includes a container containing compressed air as propellant gas.
EP19960402004 1995-09-21 1996-09-20 Valve for sprayer Expired - Lifetime EP0764593B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9511096 1995-09-21
FR9511096A FR2739086B1 (en) 1995-09-21 1995-09-21 VALVE FOR SPRAYER AND SPRAYER THUS EQUIPPED

Publications (2)

Publication Number Publication Date
EP0764593A1 EP0764593A1 (en) 1997-03-26
EP0764593B1 true EP0764593B1 (en) 1999-12-22

Family

ID=9482799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960402004 Expired - Lifetime EP0764593B1 (en) 1995-09-21 1996-09-20 Valve for sprayer

Country Status (4)

Country Link
EP (1) EP0764593B1 (en)
DE (1) DE69605741T2 (en)
ES (1) ES2141450T3 (en)
FR (1) FR2739086B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006059080A1 (en) * 2004-12-02 2006-06-08 Keith Laidler A valve for a pressurised dispenser and a pressurised dispenser comprising such a valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283962A (en) * 1964-09-09 1966-11-08 Max E Whitmore Three-position valve for aerosol container having a chamber with spaced inlets from container interior
US3593889A (en) * 1969-06-11 1971-07-20 Dart Ind Inc High volume cleaning aerosol dispensing valve
US3612361A (en) * 1969-10-20 1971-10-12 Seaquist Valve Co Self-cleaning valve
GB1600419A (en) * 1978-05-09 1981-10-14 Metal Box Co Ltd Valve for a pressurised aerosol dispensing container
GB2233395B (en) * 1989-06-23 1994-01-12 Reckitt & Colmann Prod Ltd Improvements in or relating to dispensers
NL8901877A (en) * 1989-07-20 1991-02-18 Airspray Int Bv MIXING CHAMBER FOR MIXING A GASEOUS AND LIQUID COMPONENT, METHOD FOR FORMING TIGHT CHANNELS, AND BODY OR ARTICLE ACCORDING THAT METHOD.
WO1995006606A1 (en) * 1993-08-31 1995-03-09 Deutsche Präzisions-Ventil Gmbh An improved aerosol valve

Also Published As

Publication number Publication date
ES2141450T3 (en) 2000-03-16
EP0764593A1 (en) 1997-03-26
DE69605741D1 (en) 2000-01-27
DE69605741T2 (en) 2000-07-06
FR2739086B1 (en) 1997-11-14
FR2739086A1 (en) 1997-03-28

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