EP1673961A2 - Valve and dispensing device comprising one such valve - Google Patents

Valve and dispensing device comprising one such valve

Info

Publication number
EP1673961A2
EP1673961A2 EP04805724A EP04805724A EP1673961A2 EP 1673961 A2 EP1673961 A2 EP 1673961A2 EP 04805724 A EP04805724 A EP 04805724A EP 04805724 A EP04805724 A EP 04805724A EP 1673961 A2 EP1673961 A2 EP 1673961A2
Authority
EP
European Patent Office
Prior art keywords
valve
channel
valve according
blind hole
dispensing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04805724A
Other languages
German (de)
French (fr)
Other versions
EP1673961B1 (en
Inventor
David Goujon
Christophe Jacuk
Christophe Marie
Frédéric PIROU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar France SAS
Original Assignee
Valois SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP1673961A2 publication Critical patent/EP1673961A2/en
Application granted granted Critical
Publication of EP1673961B1 publication Critical patent/EP1673961B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B65D83/52—Valves specially adapted therefor; Regulating devices for metering
    • B65D83/54—Metering valves ; Metering valve assemblies

Definitions

  • Valve and dispensing device comprising such a valve.
  • the present invention relates to a valve and a fluid dispenser device comprising such a valve. More particularly, the present invention is particularly intended for metering valves.
  • Valves are well known in the art. They generally comprise a valve body in which a valve slides between a rest position and a dispensing position, which is generally an axially depressed position inside the valve body. The valve slides relative to the valve body with the interposition of one or more seals in order to guarantee a safe and reliable distribution of the fluid product.
  • a problem which may arise with the valves concerns the risk of leakage during reactivation, and therefore an imperfect distribution of the product. This can for example occur when the user, who actuates the valve, exerts a force which is not exactly axial on the valve.
  • valve may move slightly relative to its central axis, which may cause leakage at the junction between the seals and said valve.
  • This problem is particularly troublesome when the valve is a metering valve, that is to say a valve comprising a metering chamber defining a precise dose of product dispensed at each actuation of the valve.
  • imprecision or non-reproducibility of the dose can be harmful for the user.
  • Another problem which arises in particular in metering valves concerns the precision and reproducibility of the metering even in the event of storage between two actuations.
  • the metering valves have a filling channel which makes it possible to fill the dosing chamber after dispensing a dose, when the valve returns from its dispensing position to its rest position. This filling is done by gravity when the valve is used in the inverted position and / or by vacuum due to the distribution of the previous dose.
  • the valve is stored in an upright position, there is a risk that product will flow again through the filling channel back into the reservoir, which has the effect of reducing the dose contained in the dosing chamber, and therefore of altering the precision and reproducibility of the dose. Again, when it comes to pharmaceuticals, this can have serious consequences for the user.
  • the object of the present invention is to provide a valve, in particular a metering valve, for dispensing fluid, which does not reproduce the above-mentioned drawbacks. More particularly, the aim of the present invention is to provide such a valve which guarantees optimum precision and reproducibility of the dosage on each actuation of the valve. The present invention also aims to provide such a valve which guarantees a safe and reliable operation thereof even when the user exerts a force which is not entirely axial on the valve. The present invention also aims to provide such a valve which is simple and inexpensive to manufacture and assemble.
  • the present invention therefore relates to a fluid dispensing valve comprising a valve body and a valve sliding in said valve body between a rest position and a dispensing position, said valve comprising a dispensing orifice, said valve comprising an axial guide element cooperating with a guided part of the valve, said guided part being opposite to said dispensing orifice.
  • said guide element is integral, in particular in one piece, with said valve body.
  • said guide element is a hollow sleeve whose internal diameter is approximately equal to the external diameter of the guided part of the valve sliding in said hollow sleeve.
  • said hollow sleeve is blind.
  • said hollow sleeve is through.
  • said valve is a metering valve comprising a metering chamber, said valve comprising a distribution channel connecting the metering chamber at said dispensing orifice in the dispensing position of the valve, and a filling channel for filling said metering chamber when the valve returns to its rest position.
  • said valve comprises an upper part comprising the dispensing orifice, and a lower part comprising said guided part, said upper and lower parts being assembled one inside the other to define said filling channel.
  • the lower part of the valve has a blind hole comprising two lateral through holes, one of which opens into the metering chamber in the valve rest position, the upper part of the valve being fitted in said blind hole to close off axially. said blind hole.
  • the blind hole in the lower part of the valve forms a central axial channel connected to said two lateral orifices, thus forming said filling channel, the lower end of said upper part of the valve axially delimiting said central channel.
  • said central channel has a polygonal, in particular triangular, cross section.
  • the upper part of the valve comprises a groove extending axially and defining with said blind hole of said lower part of the valve at least a part of the filling channel.
  • at least one of said lateral orifices is at least partially conical while narrowing in the direction of the blind hole.
  • the minimum diameter of said at least one conical orifice is approximately 0.3 millimeter.
  • Figure 1 is a schematic cross-sectional view of a valve according to a first embodiment of the present invention
  • Figure 2 is a view similar to that of Figure 1, showing another embodiment of the present invention
  • Figure 3 is a sectional view along the section line CC of Figure 2
  • Figure 4 is a sectional view along the line of section BB of Figure 2
  • Figure 5 is a view similar to Figures 1 and 2, showing yet another embodiment of the present invention
  • Figure 6 is an enlarged view of detail A of Figure 5
  • Figure 7 is a sectional view along the section line BB of Figure 5
  • Figure 8 is a sectional view along the section line CC of Figure 5.
  • the valve comprises a valve body 10 in which slides a valve 20 between a rest position (shown in the figures 1, 2 and 5) and a dispensing position (not shown), in which the valve is axially inserted inside the valve body 10.
  • the valve 20 has a dispensing orifice 25 and, according to a first aspect of the present invention, a part 29 opposite said - distribution orifice 25.
  • this part 29 cooperates with an axial guide element 15, so that the movement of the valve 20 is always exactly aligned on the central axis Valve X.
  • This guided part 29 of the valve 20 which cooperates with the guide element 15 is advantageously formed by the end of the valve 20 which is opposite to the dispensing orifice 25, to optimize the axial guidance.
  • the axial guide element 15 is preferably integral, in particular produced in one piece, with said pump body.
  • this guide element 15 can be produced in the form of a hollow sleeve whose internal diameter is approximately equal to the external diameter of the guided part 29 of the valve 20 sliding in said hollow sleeve.
  • one or more product passage grooves 16 can be provided at said guide element 15, in order to allow a passage of the product from the reservoir (not shown) towards the interior of the valve body 10, around said guided part 29 of the valve.
  • this at least one groove also makes it possible to avoid the risks of seizing between the valve and the valve body following possible deposits of active product on one of these parts.
  • the passage for the product can be made in a side wall of the valve body 10.
  • the hollow sleeve 15 forming the guide element can be blind, as shown in FIG. 1.
  • the valve cannot deviate during its movement from this axis X due to the guide element 15 which axially guides the movement of the guided part 29 of the valve, and therefore of the whole of the valve.
  • the valve is a metering valve, that is to say comprising a metering chamber 30.
  • the valve 20 advantageously comprises a distribution channel 24 which connects the metering chamber 30 to the dispensing orifice 25 when the valve is in the dispensing position.
  • a filling channel 26 is advantageously provided for filling the metering chamber 30 when the valve returns from its dispensing position to its rest position. In particular when the valve is used in the inverted position but stored in the upright position, there may be a problem of retention of the dose in the metering chamber 30 between two actuations of the valve.
  • the present invention provides for reducing as much as possible the cross section of the filling channel 26 in order to to prevent product contained in the dosing chamber from flowing back to the reservoir through this channel.
  • Figures 1, 2 and 4 show a first embodiment.
  • the valve 20 has an upper part 21, which incorporates the dispensing orifice 25, and a lower part 22 which incorporates the guided part 29.
  • These upper and lower parts 21, 22 are assembled one in the other, preferably in a sealed manner, to at least partially define the filling channel 26.
  • the lower part 22 of the valve 20 has a blind hole 23 which comprises two lateral openings 27, 28 one of which opens into the metering chamber 30 in the rest position of the valve 20, and the other of which opens outside of this metering chamber 30 in a part connected to the reservoir.
  • the blind hole 23 in the lower part 22 of the valve forms a central axial channel 23 which is connected to said two lateral holes 27 and 28, said central channel 23 and said lateral holes 27 and 28 thus forming said channel filling 26.
  • the upper part 21 of the valve 20 is fitted into the blind hole 23 to axially close said blind hole 23, and therefore axially delimit said filling channel 26 in this first variant.
  • the central channel 23 has a polygonal cross section, preferably triangular, as shown in FIG. 4. This makes it possible to increase the contact surface between the product and the channel, while reducing the section of this channel, to limit, see prevent a return of the product through it when storing the valve in the upright position.
  • at least one of said lateral orifices 27, 28 is produced, preferably both, at least partially conical, preferably completely conical, as shown in FIGS. 1 and 2, by narrowing in the direction of the interior of the central channel 23.
  • the minimum diameter of the conical orifice (s) 27, 28 is approximately 0.3 millimeter.
  • FIGS. 5 to 8 show another embodiment of the present invention, in which the filling channel 26 is partially defined by a groove 23 'provided in the upper part 21 of the valve, and cooperating with said blind hole 23 to define at least partially the remphssage channel 26.
  • the through holes 27 and 28 may be only partially conical, and they could even be completely cylindrical, with larger dimensions, the retention then not being provided mainly by these holes but by the very small section of the resealing channel 26 at the level of said groove 23 '. Again, it is by assembling the upper part 21 of the valve inside the lower part 22 thereof that one succeeds in producing a filling channel providing optimum retention, even in the event of prolonged storage.
  • the shape and dimensions of the groove 23 ′ as shown in FIGS.

Landscapes

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

Abstract

The invention relates to a fluid product dispensing valve comprising a valve body (10) and a delivery valve (20) which slides in the valve body (10) between a rest position and a dispensing position, said delivery valve (20) comprising a dispensing port (25). In addition, the valve comprises an axial guiding element (15) which co-operates with a guided part (29) of the delivery valve (20), said guided part (29) being disposed opposite the dispensing port (25).

Description

Valve et dispositif de distribution comportant une telle valve. Valve and dispensing device comprising such a valve.
La présente invention concerne une valve ainsi qu'un dispositif de distribution de produit fluide comportant une telle valve. Plus particulièrement, la présente invention est notamment destinée aux valves doseuses. Les valves sont bien connues dans l'état de la technique. Elles comportent généralement un corps de valve dans lequel coulisse une soupape entre une position de repos et une position de distribution, qui est généralement une position axialement enfoncée à l'intérieur du corps valve. La soupape coulisse par rapport au corps de valve avec interposition d'un ou de plusieurs joint(s) d'étanchéité afin de garantir une distribution sure et fiable du produit fluide. Un problème qui peut se poser avec les valves concerne le risque de fuite lors de ractionnement, et donc une distribution imparfaite du produit. Ceci peut par exemple se produire lorsque l'utilisateur, qui actionne la valve, exerce une force qui n'est pas exactement axiale sur la soupape. Ceci peut avoir pour conséquence que la soupape se déplace légèrement par rapport à son axe central, ce qui risque de provoquer des fuites au niveau de la jonction entre les joints d'étanchéité et ladite soupape. Ce problème est particulièrement gênant lorsque la valve est une valve doseuse, c'est-à-dire une valve comportant une chambre de dosage définissant une dose précise de produit distribuée à chaque actionnement de la valve. En particulier, lorsqu'il s'agit de produit pharmaceutique, une imprécision ou non reproductibilité de la dose peut être néfaste pour l'utilisateur. Un autre problème qui se pose en particulier dans les valves doseuses concerne la précision et la reproductibilité du dosage même en cas de stockage entre deux actionnements. Généralement, les valves doseuses comportent un canal de remplissage qui permet de remplir la chambre de dosage après distribution d'une dose, lorsque la soupape revient de sa position de distribution vers sa position de repos. Ce remplissage se fait par gravité lorsque la valve est utilisée en position inversée et/ou par dépression due à la distribution de la dose précédente. Lorsque la valve est stockée en position droite, il y a alors un risque que du produit s'écoule à nouveau à travers le canal de remplissage en retour dans le réservoir, ce qui a pour effet de diminuer la dose contenue dans la chambre de dosage, et donc d'altérer la précision et la reproductibilité de la dose. A nouveau, lorsqu'il s'agit de produit pharmaceutique, ceci peut avoir de graves conséquences pour l'utilisateur. La présente invention a pour but de fournir une valve, notamment une valve doseuse, pour distribuer du produit fluide, qui ne reproduit pas les inconvénients susmentionnés. Plus particulièrement, la présente invention a pour but de fournir une telle valve qui garantisse une précision et une reproductibilité optimale du dosage à chaque actionnement de la valve. La présente invention a également pour but de fournir une telle valve qui garantisse un fonctionnement sure et fiable de celle-ci même lorsque l'utilisateur exerce une force qui n'est pas tout a fait axiale sur la soupape. La présente invention a également pour objet de fournir une telle valve qui soit simple et peu coûteuse à fabriquer et à assembler. La présente invention a donc pour objet une valve de distribution de produit fluide comportant un corps de valve et une soupape coulissant dans ledit corps de valve entre une position de repos et une position de distribution, ladite soupape comportant un orifice de distribution, ladite valve comportant un élément de guidage axial coopérant avec une partie guidée de la soupape, ladite partie guidée étant opposée audit orifice de distribution. Avantageusement, ledit élément de guidage est solidaire, notamment monobloc, dudit corps de valve. Avantageusement, ledit élément de guidage est un manchon creux dont le diamètre interne est environ égal au diamètre externe de la partie guidée de la soupape coulissant dans ledit manchon creux. Selon une première variante de réalisation, ledit manchon creux est borgne. Selon une seconde variante de réalisation, ledit manchon creux est traversant. Avantageusement, ladite valve est une valve doseuse comportant une chambre de dosage, ladite soupape comportant un canal de distribution reliant la chambre de dosage audit orifice de distribution en position de distribution de la soupape, et un canal de remplissage pour remplir ladite chambre de dosage lorsque la soupape revient vers sa position de repos. Avantageusement, ladite soupape comporte une partie haute comportant l'orifice de distribution, et une partie basse comportant ladite partie guidée, lesdites parties haute et basse étant assemblées l'une dans l'autre pour définir ledit canal de remplissage. Avantageusement, la partie basse de la soupape comporte un trou borgne comprenant deux orifices latéraux traversant dont l'un débouche dans la chambre de dosage en position de repos de la soupape, la partie haute de la soupape étant emmanchée dans ledit trou borgne pour obturer axialement ledit trou borgne. Selon un premier mode de réalisation, le trou borgne de la partie basse de la soupape forme un canal axial central relié audit deux orifices latéraux, formant ainsi ledit canal de remplissage, rextrémité inférieure de ladite partie haute de la soupape délimitant axialement ledit canal central. Avantageusement, ledit canal central a une section transversale polygonale, notamment triangulaire. Selon un second mode de réalisation, la partie haute de la soupape comporte une rainure s'étendant axialement et définissant avec ledit trou borgne de ladite partie basse de la soupape au moins une partie du canal de remplissage. Avantageusement, au moins un desdits orifices latéraux est au moins partiellement conique en se rétrécissant en direction du trou borgne. Avantageusement, le diamètre minimal dudit au moins un orifice conique est environ 0,3 millimètre. La présente invention a également pour objet un dispositif de distribution de produit fluide comportant une valve telle que décrite ci-dessus. D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement au cours de la description détaillée suivante de plusieurs modes de réalisation celle-ci, faite en référence aux dessins joints, donnés à titre d'exemples non limitatifs, et sur lesquels : la figure 1 est une vue schématique en section transversale d'une valve selon un premier mode de réalisation de la présente invention ; la figure 2 est une vue similaire à celle de la figure 1, montrant un autre mode de réalisation de la présente invention ; la figure 3 est une vue en coupe selon la ligne de coupe CC de la figure 2 ; la figure 4 est une vue en coupe selon la ligne de coupe BB de la figure 2 ; la figure 5 est une vue similaire aux figures 1 et 2, montrant encore un autre mode de réalisation de la présente invention ; la figure 6 est une vue agrandie du détail A de la figure 5 ; la figure 7 est une vue en coupe selon la ligne de coupe BB de la figure 5 ; et la figure 8 est une vue en coupe selon la ligne de coupe CC de la figure 5. En se référant aux figures, la valve comporte un corps de valve 10 dans lequel coulisse une soupape 20 entre une position de repos (représentée sur les figures 1, 2 et 5) et une position de distribution (non représentée), dans laquelle la soupape est axialement enfoncée à l'intérieur du corps de valve 10. La soupape 20 comporte un orifice de distribution 25 et, selon un premier aspect de la présente invention, une partie 29 opposée audit - orifice de distribution 25. Selon l'invention, cette partie 29 coopère avec un élément de guidage axial 15, de telle sorte que le déplacement de la soupape 20 est toujours exactement aligné sur l'axe central X de la valve. Cette partie guidée 29 de la soupape 20 qui coopère avec l'élément de guidage 15 est avantageusement formé par l'extrémité de la soupape 20 qui est opposée à l'orifice de distribution 25, pour optimiser le guidage axial. L'élément de guidage axial 15 est de préférence solidaire, notamment réalisé de manière monobloc, avec ledit corps de pompeThe present invention relates to a valve and a fluid dispenser device comprising such a valve. More particularly, the present invention is particularly intended for metering valves. Valves are well known in the art. They generally comprise a valve body in which a valve slides between a rest position and a dispensing position, which is generally an axially depressed position inside the valve body. The valve slides relative to the valve body with the interposition of one or more seals in order to guarantee a safe and reliable distribution of the fluid product. A problem which may arise with the valves concerns the risk of leakage during reactivation, and therefore an imperfect distribution of the product. This can for example occur when the user, who actuates the valve, exerts a force which is not exactly axial on the valve. This may result in the valve moving slightly relative to its central axis, which may cause leakage at the junction between the seals and said valve. This problem is particularly troublesome when the valve is a metering valve, that is to say a valve comprising a metering chamber defining a precise dose of product dispensed at each actuation of the valve. In particular, when it is a pharmaceutical product, imprecision or non-reproducibility of the dose can be harmful for the user. Another problem which arises in particular in metering valves concerns the precision and reproducibility of the metering even in the event of storage between two actuations. Generally, the metering valves have a filling channel which makes it possible to fill the dosing chamber after dispensing a dose, when the valve returns from its dispensing position to its rest position. This filling is done by gravity when the valve is used in the inverted position and / or by vacuum due to the distribution of the previous dose. When the valve is stored in an upright position, there is a risk that product will flow again through the filling channel back into the reservoir, which has the effect of reducing the dose contained in the dosing chamber, and therefore of altering the precision and reproducibility of the dose. Again, when it comes to pharmaceuticals, this can have serious consequences for the user. The object of the present invention is to provide a valve, in particular a metering valve, for dispensing fluid, which does not reproduce the above-mentioned drawbacks. More particularly, the aim of the present invention is to provide such a valve which guarantees optimum precision and reproducibility of the dosage on each actuation of the valve. The present invention also aims to provide such a valve which guarantees a safe and reliable operation thereof even when the user exerts a force which is not entirely axial on the valve. The present invention also aims to provide such a valve which is simple and inexpensive to manufacture and assemble. The present invention therefore relates to a fluid dispensing valve comprising a valve body and a valve sliding in said valve body between a rest position and a dispensing position, said valve comprising a dispensing orifice, said valve comprising an axial guide element cooperating with a guided part of the valve, said guided part being opposite to said dispensing orifice. Advantageously, said guide element is integral, in particular in one piece, with said valve body. Advantageously, said guide element is a hollow sleeve whose internal diameter is approximately equal to the external diameter of the guided part of the valve sliding in said hollow sleeve. According to a first alternative embodiment, said hollow sleeve is blind. According to a second alternative embodiment, said hollow sleeve is through. Advantageously, said valve is a metering valve comprising a metering chamber, said valve comprising a distribution channel connecting the metering chamber at said dispensing orifice in the dispensing position of the valve, and a filling channel for filling said metering chamber when the valve returns to its rest position. Advantageously, said valve comprises an upper part comprising the dispensing orifice, and a lower part comprising said guided part, said upper and lower parts being assembled one inside the other to define said filling channel. Advantageously, the lower part of the valve has a blind hole comprising two lateral through holes, one of which opens into the metering chamber in the valve rest position, the upper part of the valve being fitted in said blind hole to close off axially. said blind hole. According to a first embodiment, the blind hole in the lower part of the valve forms a central axial channel connected to said two lateral orifices, thus forming said filling channel, the lower end of said upper part of the valve axially delimiting said central channel. Advantageously, said central channel has a polygonal, in particular triangular, cross section. According to a second embodiment, the upper part of the valve comprises a groove extending axially and defining with said blind hole of said lower part of the valve at least a part of the filling channel. Advantageously, at least one of said lateral orifices is at least partially conical while narrowing in the direction of the blind hole. Advantageously, the minimum diameter of said at least one conical orifice is approximately 0.3 millimeter. The present invention also relates to a device for dispensing a fluid product comprising a valve as described above. Other characteristics and advantages of the present invention will appear more clearly during the following detailed description of several embodiments thereof, made with reference to the accompanying drawings, given by way of nonlimiting examples, and in which: Figure 1 is a schematic cross-sectional view of a valve according to a first embodiment of the present invention; Figure 2 is a view similar to that of Figure 1, showing another embodiment of the present invention; Figure 3 is a sectional view along the section line CC of Figure 2; Figure 4 is a sectional view along the line of section BB of Figure 2; Figure 5 is a view similar to Figures 1 and 2, showing yet another embodiment of the present invention; Figure 6 is an enlarged view of detail A of Figure 5; Figure 7 is a sectional view along the section line BB of Figure 5; and Figure 8 is a sectional view along the section line CC of Figure 5. Referring to the figures, the valve comprises a valve body 10 in which slides a valve 20 between a rest position (shown in the figures 1, 2 and 5) and a dispensing position (not shown), in which the valve is axially inserted inside the valve body 10. The valve 20 has a dispensing orifice 25 and, according to a first aspect of the present invention, a part 29 opposite said - distribution orifice 25. According to the invention, this part 29 cooperates with an axial guide element 15, so that the movement of the valve 20 is always exactly aligned on the central axis Valve X. This guided part 29 of the valve 20 which cooperates with the guide element 15 is advantageously formed by the end of the valve 20 which is opposite to the dispensing orifice 25, to optimize the axial guidance. The axial guide element 15 is preferably integral, in particular produced in one piece, with said pump body.
10, comme cela est représenté sur les figures 1, 2 et 5. Avantageusement, cet élément de guidage 15 peut être réalisé sous la forme d'un manchon creux dont le diamètre interne est environ égal au diamètre externe de la partie guidée 29 de la soupape 20 coulissant dans ledit manchon creux. Eventuellement, comme cela apparaît sur les figures 2 et 3, on peut prévoir une ou plusieurs rainure(s) de passage de produit 16 au niveau dudit élément de guidage 15, afin de permettre un passage du produit du réservoir (non représenté) vers l'intérieur du corps de valve 10, autour de ladite partie guidée 29 de la soupape. Avantageusement, cette au moins une rainure permet en outre d'éviter les risques de grippage entre la soupape et le corps de valve suite à d'éventuels dépôts de produit actifs sur une de ces parties. En variante, comme représenté schématiquement sur la figure 1, le passage pour le produit peut être réalisé dans une paroi latérale du corps de valve 10. Dans cette hypothèse, le manchon creux 15 formant l'élément de guidage peut être borgne, comme représenté sur la figure 1. Une autre variante, représentée sur les figures 2 et 5, montre un manchon creux 15 traversant, la soupape pouvant éventuellement faire saillie hors du corps de valve 10, à l'intérieur du réservoir (non représenté), lorsque la soupape 20 est enfoncée en position de distribution. Comme cela apparaît clairement notamment sur la vue en coupe de la figure 3, même si l'utilisateur exerce une force qui n'est pas exactement parallèle à l'axe central X, la soupape ne peut pas dévier lors de son déplacement de cet axe X en raison de l'élément de guidage 15 qui guide axialement le déplacement de la partie guidée 29 de la soupape, et donc de l'ensemble de la soupape. On évite ainsi tout risque de décalage de la soupape lors de l'actionnement, et donc tout risque de fuite notamment au niveau du joint supérieur de la valve. Dans un mode de réalisation avantageux de l'invention, la valve est une valve doseuse, c'est-à-dire comportant une chambre de dosage 30. La soupape 20 comporte avantageusement un canal de distribution 24 qui relie la chambre de dosage 30 à l'orifice de distribution 25 lorsque la soupape est en position de distribution. De même, un canal de remplissage 26 est avantageusement prévu pour remplir la chambre de dosage 30 lorsque la soupape revient de sa position de distribution vers sa position de repos. En particulier lorsque la valve est utilisée en position inversée mais stockée en position droite, il peut se poser un problème de rétention de la dose dans la chambre de dosage 30 entre deux actionnements de la valve. Pour supprimer ce problème, la présente invention prévoit de réduire au maximum la section du canal de remplissage 26 afin d'éviter que du produit contenu dans la chambre de dosage ne puisse s'écouler en retour vers le réservoir à travers ce canal. Les figures 1, 2 et 4 représentent un premier mode de réalisation. Selon ce premier mode de réalisation, la soupape 20 comporte une partie haute 21, qui incorpore l'orifice de distribution 25, et une partie basse 22 qui incorpore la partie guidée 29. Ces parties haute et basse 21, 22 sont assemblée l'une dans l'autre, de préférence de manière étanche, pour définir au moins partiellement le canal de remplissage 26. Dans l'exemple des figure 1, 2 et 4, la partie basse 22 de la soupape 20 comporte un trou borgne 23 qui comprend deux orifices latéraux traversant 27, 28 dont l'un débouche dans la chambre de dosage 30 en position de repos de la soupape 20, et dont l'autre débouche à l'extérieur de cette chambre de dosage 30 dans une partie reliée au réservoir. Dans cette première variante, le trou borgne 23 de la partie basse 22 de la soupape forme un canal axial central 23 qui est relié auxdits deux orifices latéraux 27 et 28, ledit canal central 23 et lesdits orifices latéraux 27 et 28 formant ainsi ledit canal de remplissage 26. De préférence, la partie haute 21 de la soupape 20 est emmanchée dans le trou borgne 23 pour obturer axialement ledit trou borgne 23, et donc délimiter axialement ledit canal de remplissage 26 dans cette première variante. Avantageusement, le canal central 23 a une section transversale polygonale de préférence triangulaire, comme représenté sur la figure 4. Ceci permet d'augmenter la surface de contact entre le produit et le canal, tout en réduisant la section de ce canal, pour limiter, voir empêcher, un retour du produit à travers celui-ci lors d'un stockage de la valve en position droite. Pour encore d'avantage améliorer cette rétention, on réalise au moins un desdits orifices latéraux 27, 28, de préférence les deux, de manière au moins partiellement conique, de préférence complètement conique, comme représenté sur les figure 1 et 2, en se rétrécissant en direction de l'intérieur du canal central 23. Avantageusement, le diamètre minimal du ou des orifice(s) conique(s) 27, 28 est d'environ 0,3 millimètre. Avec un tel diamètre, il est pratiquement impossible que du produit contenu dans la chambre de dosage 30 puisse s'écouler en retour à travers le canal de remplissage 26, le diamètre étant trop petit pour permettre un passage du produit par simple gravité. La forme conique des trous permet de réaliser le diamètre minimal de ceux-ci avec une valeur très faible de l'ordre de 0,3 millimètre. En effet, des broches cylindriques pour le moulage de trous cylindriques d'une telle dimension seraient trop fragiles, de sorte qu'il serait très difficile et coûteux de réaliser des trous traversants cylindriques de dimension d'environ 0,3 millimètre de diamètre. Par contre, en prévoyant des trous coniques se rétrécissant vers l'intérieur du canal 23, on obtient le résultat recherché, à savoir une rétention de la dose dans la chambre de dosage 30 tout en permettant un moulage et une réalisation simple et peu coûteuse de ces trous au moyen de broches coniques très résistante, dont seul rextrémité comporte une dimension réduite de l'ordre de 0,3 millimètre. Les figures 5 à 8 montrent un autre mode de réalisation de la présente invention, dans lequel le canal de remphssage 26 est défini partiellement par une rainure 23' prévue dans la partie haute 21 de la soupape, et coopérant avec ledit trou borgne 23 pour définir au moins partiellement le canal de remphssage 26.10, as shown in FIGS. 1, 2 and 5. Advantageously, this guide element 15 can be produced in the form of a hollow sleeve whose internal diameter is approximately equal to the external diameter of the guided part 29 of the valve 20 sliding in said hollow sleeve. Optionally, as shown in FIGS. 2 and 3, one or more product passage grooves 16 can be provided at said guide element 15, in order to allow a passage of the product from the reservoir (not shown) towards the interior of the valve body 10, around said guided part 29 of the valve. Advantageously, this at least one groove also makes it possible to avoid the risks of seizing between the valve and the valve body following possible deposits of active product on one of these parts. Alternatively, as shown diagrammatically in FIG. 1, the passage for the product can be made in a side wall of the valve body 10. In this case, the hollow sleeve 15 forming the guide element can be blind, as shown in FIG. 1. Another variant, represented in FIGS. 2 and 5, shows a hollow sleeve 15 passing through, the valve possibly being able to project out of the valve body 10, inside the reservoir (not shown), when the valve 20 is pushed into the dispensing position. As clearly appears in particular in the sectional view of FIG. 3, even if the user exerts a force which is not exactly parallel to the central axis X, the valve cannot deviate during its movement from this axis X due to the guide element 15 which axially guides the movement of the guided part 29 of the valve, and therefore of the whole of the valve. This avoids any risk of offset of the valve during actuation, and therefore any risk of leakage in particular at the upper seal of the valve. In an advantageous embodiment of the invention, the valve is a metering valve, that is to say comprising a metering chamber 30. The valve 20 advantageously comprises a distribution channel 24 which connects the metering chamber 30 to the dispensing orifice 25 when the valve is in the dispensing position. Likewise, a filling channel 26 is advantageously provided for filling the metering chamber 30 when the valve returns from its dispensing position to its rest position. In particular when the valve is used in the inverted position but stored in the upright position, there may be a problem of retention of the dose in the metering chamber 30 between two actuations of the valve. To overcome this problem, the present invention provides for reducing as much as possible the cross section of the filling channel 26 in order to to prevent product contained in the dosing chamber from flowing back to the reservoir through this channel. Figures 1, 2 and 4 show a first embodiment. According to this first embodiment, the valve 20 has an upper part 21, which incorporates the dispensing orifice 25, and a lower part 22 which incorporates the guided part 29. These upper and lower parts 21, 22 are assembled one in the other, preferably in a sealed manner, to at least partially define the filling channel 26. In the example of FIGS. 1, 2 and 4, the lower part 22 of the valve 20 has a blind hole 23 which comprises two lateral openings 27, 28 one of which opens into the metering chamber 30 in the rest position of the valve 20, and the other of which opens outside of this metering chamber 30 in a part connected to the reservoir. In this first variant, the blind hole 23 in the lower part 22 of the valve forms a central axial channel 23 which is connected to said two lateral holes 27 and 28, said central channel 23 and said lateral holes 27 and 28 thus forming said channel filling 26. Preferably, the upper part 21 of the valve 20 is fitted into the blind hole 23 to axially close said blind hole 23, and therefore axially delimit said filling channel 26 in this first variant. Advantageously, the central channel 23 has a polygonal cross section, preferably triangular, as shown in FIG. 4. This makes it possible to increase the contact surface between the product and the channel, while reducing the section of this channel, to limit, see prevent a return of the product through it when storing the valve in the upright position. To further improve this retention, at least one of said lateral orifices 27, 28 is produced, preferably both, at least partially conical, preferably completely conical, as shown in FIGS. 1 and 2, by narrowing in the direction of the interior of the central channel 23. Advantageously, the minimum diameter of the conical orifice (s) 27, 28 is approximately 0.3 millimeter. With such a diameter, it is practically impossible for the product contained in the metering chamber 30 to flow back through the filling channel 26, the diameter being too small to allow a passage of the product by simple gravity. The conical shape of the holes makes it possible to produce the minimum diameter of these with a very small value of the order of 0.3 millimeter. Indeed, cylindrical pins for molding cylindrical holes of such a dimension would be too fragile, so that it would be very difficult and costly to produce cylindrical through holes of dimension of about 0.3 millimeter in diameter. On the other hand, by providing conical holes narrowing towards the inside of the channel 23, the desired result is obtained, namely retention of the dose in the metering chamber 30 while allowing molding and a simple and inexpensive production of these holes by means of very resistant conical pins, the only end of which has a reduced dimension of the order of 0.3 millimeter. Figures 5 to 8 show another embodiment of the present invention, in which the filling channel 26 is partially defined by a groove 23 'provided in the upper part 21 of the valve, and cooperating with said blind hole 23 to define at least partially the remphssage channel 26.
Cette mise en œuvre permet de réaliser un canal de remphssage de dimensions encore plus réduites que dans l'exemple précédent, et d'ainsi encore davantage augmenter la rétention de la dose dans la chambre de dosage 30. Comme visible sur les figures 5, 6 et 7, dans cette variante, les trous traversant 27 et 28 peuvent n'être que partiellement coniques, et ils pourraient même être complètement cylindriques, avec des dimensions supérieures, la rétention n'étant alors pas fournie principalement par ces trous mais par la très faible section du canal de remphssage 26 au niveau de ladite rainure 23'. A nouveau, c'est en assemblant la partie haute 21 de la soupape à l'intérieur de la partie basse 22 de celle-ci qu'on arrive à réaliser un canal de remplissage fournissant une rétention optimale, même en cas de stockage prolongé. La forme et les dimensions de la rainure 23', telle qu'elle est représentée sur les figures 7 et 8, pourraient être évidemment modifiées selon les besoins, notamment pour optimiser le remplissage de la chambre de dosage tout en évitant une perte de dose en fournissant une rétention parfaite de la dose lorsqu'elle est dans la chambre de dosage 30. Le remphssage peut se faire malgré la très faible section de la rainure 23' notamment parce que lorsque la soupape 20 est ramenée de sa position de distribution vers sa position de repos par le ressort de rappel 50, la valve est généralement en position inversée, et le remphssage se fait non seulement par la gravité mais également par la dépression créée à l'intérieur de cette chambre de dosage par la distribution de la dose précédente. Bien évidemment, en combinant un canal de remplissage 26 fournissant une rétention optimal de la dose dans la chambre de dosage 30, avec les moyens de guidage 15 de la soupape 20, assurant un déplacement parfaitement axial de celle-ci, on arrive à garantir une reproductibilité et une précision optimale du dosage à chaque actionnement de la valve. H est toutefois entendu que ces aspects pourraient être réalisés séparément l'un de l'autre en fonction des spécificités requises. Bien que l'invention ait été décrite en référence à plusieurs modes de réalisation de celle-ci, il est entendu qu'elle n'est pas limitée par les exemples représentés. Au contraire, un homme du métier peut y apporter toutes modifications utiles sans sortir du cadre de la présente invention tel que défini par les revendications annexées. This implementation makes it possible to produce a filling channel of even smaller dimensions than in the previous example, and thus even more increase the retention of the dose in the metering chamber 30. As can be seen in FIGS. 5, 6 and 7, in this variant, the through holes 27 and 28 may be only partially conical, and they could even be completely cylindrical, with larger dimensions, the retention then not being provided mainly by these holes but by the very small section of the resealing channel 26 at the level of said groove 23 '. Again, it is by assembling the upper part 21 of the valve inside the lower part 22 thereof that one succeeds in producing a filling channel providing optimum retention, even in the event of prolonged storage. The shape and dimensions of the groove 23 ′, as shown in FIGS. 7 and 8, could obviously be modified as necessary, in particular to optimize the filling of the metering chamber while avoiding a loss of dose by providing perfect retention of the dose when it is in the dosing chamber 30. The filling can be done despite the very small section of the groove 23 ′ in particular because when the valve 20 is brought back from its dispensing position to its rest position by the return spring 50, the valve is generally in the inverted position, and the filling is done not only by gravity but also by the vacuum created during inside this dosing chamber by distributing the previous dose. Obviously, by combining a filling channel 26 providing optimal retention of the dose in the metering chamber 30, with the guide means 15 of the valve 20, ensuring a perfectly axial displacement of the latter, we can guarantee a reproducibility and optimal dosing precision each time the valve is actuated. It is understood, however, that these aspects could be carried out separately from one another depending on the specificities required. Although the invention has been described with reference to several embodiments thereof, it is understood that it is not limited by the examples shown. On the contrary, a person skilled in the art can make any useful modifications to it without departing from the scope of the present invention as defined by the appended claims.

Claims

Revendications claims
1.- Naïve de distribution de produit fluide comportant un corps de valve (10) et une soupape (20) coulissant dans ledit corps de valve (10) entre une position de repos et une position de distribution, ladite soupape (20) comportant un orifice de distribution (25), caractérisé en ce que ladite valve comporte un élément de guidage axial (15) coopérant avec une partie guidée (29) de la soupape (20), ladite partie guidée (29) étant opposée audit orifice de distribution (25). 1.- Naive fluid dispenser comprising a valve body (10) and a valve (20) sliding in said valve body (10) between a rest position and a dispensing position, said valve (20) comprising a dispensing orifice (25), characterized in that said valve comprises an axial guide element (15) cooperating with a guided part (29) of the valve (20), said guided part (29) being opposite to said dispensing orifice ( 25).
2.- Valve selon la revendication 1, dans laquelle ledit élément de guidage (15) est solidaire, notamment monobloc, dudit corps de valve (10). 2. Valve according to claim 1, in which said guide element (15) is integral, in particular in one piece, with said valve body (10).
3.- Valve selon la revendication 1 ou 2, dans laquelle ledit élément de guidage (15) est un manchon creux dont le diamètre interne est environ égal au diamètre externe de la partie guidée (29) de la soupape coulissant dans ledit manchon creux. 3. Valve according to claim 1 or 2, wherein said guide element (15) is a hollow sleeve whose internal diameter is approximately equal to the external diameter of the guided part (29) of the valve sliding in said hollow sleeve.
4.- Naïve selon la revendication 3, dans laquelle ledit manchon creux (15) est borgne. 4.- Naive according to claim 3, wherein said hollow sleeve (15) is blind.
5.- Valve selon la revendication 3, dans laquelle ledit manchon creux (15) est traversant. 5. Valve according to claim 3, wherein said hollow sleeve (15) is through.
6.- Valve selon l'une quelconque des revendications précédentes, dans laquelle ladite valve est une valve doseuse comportant une chambre de dosage (30), ladite soupape (20) comportant un canal de distribution (24) reliant la chambre de dosage (30) audit orifice de distribution (25) en position de distribution de la soupape (20), et un canal de remplissage (26) pour remplir ladite chambre de dosage (30) lorsque la soupape (20) revient vers sa position de repos. 6. Valve according to any one of the preceding claims, in which said valve is a metering valve comprising a metering chamber (30), said valve (20) comprising a distribution channel (24) connecting the metering chamber (30 ) to said dispensing orifice (25) in the dispensing position of the valve (20), and a filling channel (26) for filling said metering chamber (30) when the valve (20) returns to its rest position.
7.- Valve selon la revendication 6, dans laquelle ladite soupape (20) comporte une partie haute (21) comportant l'orifice de distribution (25), et une partie basse (22) comportant ladite partie guidée (29), lesdites parties haute et basse (21, 22) étant assemblées l'une dans l'autre pour définir ledit canal de remphssage (26). 7. A valve according to claim 6, wherein said valve (20) comprises an upper part (21) comprising the dispensing orifice (25), and a lower part (22) comprising said guided part (29), said parts high and low (21, 22) being assembled one inside the other to define said filling channel (26).
8.- Valve selon la revendication 7, dans laquelle la partie basse (22) de la soupape (20) comporte un trou borgne (23) comprenant deux orifices latéraux traversant (27, 28) dont l'un débouche dans la chambre de dosage (30) en position de repos de la soupape (20), la partie haute (21) de la soupape (20) étant emmanchée dans ledit trou borgne (23) pour obturer axialement ledit trou borgne (23). 8.- Valve according to claim 7, wherein the lower part (22) of the valve (20) has a blind hole (23) comprising two lateral through holes (27, 28) one of which opens into the metering chamber (30) in the rest position of the valve (20), the upper part (21) of the valve (20) being fitted in said blind hole (23) to axially close said blind hole (23).
9.- Valve selon la revendication 8, dans laquelle le trou borgne (23) de la partie basse (22) de la soupape (20) forme un canal axial central (23) relié audit deux orifices latéraux (27, 28), formant ainsi ledit canal de remphssage (26), rextrémité inférieure de ladite partie haute (21) de la soupape (20) délimitant axialement ledit canal central (23). 9. A valve according to claim 8, in which the blind hole (23) of the lower part (22) of the valve (20) forms a central axial channel (23) connected to said two lateral orifices (27, 28), forming thus said filling channel (26), lower end of said upper part (21) of the valve (20) axially delimiting said central channel (23).
10.- Valve selon la revendication 9, dans laquelle ledit canal central (23) a une section transversale polygonale, notamment triangulaire. 10.- Valve according to claim 9, wherein said central channel (23) has a polygonal cross section, in particular triangular.
11.- Valve selon la revendication 8, dans laquelle la partie haute (21) de la soupape comporte une rainure (23') s'étendant axialement et définissant avec ledit trou borgne (23) de ladite partie basse de la soupape (20) au moins une partie du canal de remphssage (26). 11. A valve according to claim 8, wherein the upper part (21) of the valve has a groove (23 ') extending axially and defining with said blind hole (23) of said lower part of the valve (20) at least part of the filling channel (26).
12.- Valve selon l'une quelconque des revendications 8 à 11, dans laquelle au moins un desdits orifices latéraux (27, 28) est au moins partiellement conique en se rétrécissant en direction du trou borgne (23). 12.- Valve according to any one of claims 8 to 11, wherein at least one of said lateral orifices (27, 28) is at least partially conical while narrowing in the direction of the blind hole (23).
13.- Valve selon la revendication 12, dans laquelle le diamètre minimal dudit au moins un orifice conique (27, 28) est environ 0,3 millimètre. 13. A valve according to claim 12, in which the minimum diameter of said at least one conical orifice (27, 28) is approximately 0.3 millimeter.
14.- Dispositif de distribution de produit fluide, caractérisé en ce qu'il comporte une valve selon l'une quelconque des revendications précédentes. 14.- Fluid product distribution device, characterized in that it comprises a valve according to any one of the preceding claims.
EP04805724A 2003-10-07 2004-10-04 Valve and dispensing device comprising one such valve Active EP1673961B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311719A FR2860503B1 (en) 2003-10-07 2003-10-07 VALVE AND DISPENSING DEVICE COMPRISING SUCH A VALVE.
PCT/FR2004/050481 WO2005032970A2 (en) 2003-10-07 2004-10-04 Valve and dispensing device comprising one such valve

Publications (2)

Publication Number Publication Date
EP1673961A2 true EP1673961A2 (en) 2006-06-28
EP1673961B1 EP1673961B1 (en) 2008-04-09

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EP04805724A Active EP1673961B1 (en) 2003-10-07 2004-10-04 Valve and dispensing device comprising one such valve

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US (1) US20070131722A1 (en)
EP (1) EP1673961B1 (en)
JP (1) JP2007533558A (en)
CN (1) CN1879448A (en)
DE (1) DE602004013033T2 (en)
FR (1) FR2860503B1 (en)
WO (1) WO2005032970A2 (en)

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FR2996827B1 (en) * 2012-10-12 2014-10-31 Rexam Healthcare La Verpillier DOSING VALVE FOR DISTRIBUTING AN AEROSOL
FR2999542B1 (en) * 2012-12-17 2014-12-05 Rexam Healthcare La Verpillier DOSING VALVE FOR DISTRIBUTING AN AEROSOL
FR3006300B1 (en) 2013-06-04 2015-07-03 Aptar France Sas DOSING VALVE AND DEVICE FOR DISPENSING FLUID PRODUCT COMPRISING SUCH A VALVE.
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FR3049275B1 (en) 2016-03-23 2019-07-19 Aptar France Sas DOSING VALVE AND DEVICE FOR DISPENSING FLUID PRODUCT COMPRISING SUCH A VALVE
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Publication number Publication date
WO2005032970A2 (en) 2005-04-14
EP1673961B1 (en) 2008-04-09
JP2007533558A (en) 2007-11-22
DE602004013033T2 (en) 2009-05-14
US20070131722A1 (en) 2007-06-14
CN1879448A (en) 2006-12-13
FR2860503B1 (en) 2007-11-02
WO2005032970A3 (en) 2005-07-21
FR2860503A1 (en) 2005-04-08
DE602004013033D1 (en) 2008-05-21

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