EP4460469B1 - Dosierventil mit verbesserter dosierkammer - Google Patents

Dosierventil mit verbesserter dosierkammer

Info

Publication number
EP4460469B1
EP4460469B1 EP23703260.2A EP23703260A EP4460469B1 EP 4460469 B1 EP4460469 B1 EP 4460469B1 EP 23703260 A EP23703260 A EP 23703260A EP 4460469 B1 EP4460469 B1 EP 4460469B1
Authority
EP
European Patent Office
Prior art keywords
valve
chamber
cylindrical wall
metering
seal
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.)
Active
Application number
EP23703260.2A
Other languages
English (en)
French (fr)
Other versions
EP4460469A1 (de
Inventor
Matthieu LEVACHER
Jean-Marc NICOL
Ludovic Petit
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
Aptar France 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 Aptar France SAS filed Critical Aptar France SAS
Publication of EP4460469A1 publication Critical patent/EP4460469A1/de
Application granted granted Critical
Publication of EP4460469B1 publication Critical patent/EP4460469B1/de
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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/44—Valves specially adapted for the discharge of contents; Regulating devices
    • B65D83/52—Metering valves; Metering devices
    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/141—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant specially adapted for specific contents or propellants

Definitions

  • the present invention relates to a dosing valve for a fluid product distribution device.
  • So-called metering valves in which a precise dose of fluid product is distributed with each actuation of the valve, are well known in the prior art, and are generally assembled on a tank containing the fluid product and a propellant gas used to expel the dose.
  • Retaining valves have a valve that, in its rest position, partially closes the metering chamber. More precisely, the exterior of the valve seals tightly against the metering chamber's seal, so that in this rest position, the metering chamber is connected to the reservoir only via the valve's internal channel.
  • Self-priming valves have a metering chamber that, in its rest position, is open to the reservoir and fills upon activation, when the user returns the device to its reversed operating position.
  • the dose delivered with each actuation can vary, for example, from 25 to 75 ⁇ l.
  • One solution is to use a larger or smaller insert in the dosing chamber, depending on the desired volume.
  • increasing the volume above a certain value, typically 75 ⁇ l, is difficult without modifying the dimensions of the valve body, which would require changes to the manufacturing and assembly machinery and therefore incur significant costs.
  • the present invention aims to provide a metering valve that does not reproduce the aforementioned disadvantages.
  • the present invention thus aims to provide a dosing valve which makes it possible to increase the volume of the dosing chamber without modifying the valve body.
  • the present invention also aims to provide a metering valve that is simple and inexpensive to manufacture and assemble, and reliable in operation.
  • the present invention therefore relates to a metering valve for distributing fluid products, comprising a valve body containing a metering chamber, said metering chamber being defined by a chamber insert and two annular seals, a valve seal and a chamber seal, said chamber insert having a cylindrical wall, an upper edge cooperating with said valve seal and a lower edge cooperating with said chamber seal, a valve sliding axially in said valve body between a rest position and a distribution position, to selectively distribute the contents of said metering chamber, said valve being forced towards its rest position by a spring cooperating on the one hand with said valve body and on the other hand with said valve, said cylindrical wall of said chamber insert having at least one opening connecting said metering chamber to an external volume disposed outside of said chamber insert, between said valve body and said cylindrical wall.
  • said upper edge of said chamber insert extends radially inwards by means of an upper flange which increases the contact area with said valve seal, said contact area being always the same, regardless of the width of said cylindrical wall.
  • said lower edge of said chamber insert extends radially inwards by a lower flange which increases the contact area with said chamber seal, said contact area always being the same, regardless of the width of said cylindrical wall.
  • the volume of said dosing chamber is modifiable between 25 and 100 ⁇ l, without modification of said valve body, by adapting the thickness of said cylindrical wall and/or the number, shape and/or dimensions of said openings.
  • the cylindrical wall of the chamber insert has a single opening.
  • the cylindrical wall of the chamber insert has two diametrically opposed openings.
  • said cylindrical wall of said chamber insert has a plurality of openings distributed around the periphery of said cylindrical wall.
  • the present invention also relates to a fluid product distribution device comprising a metering valve as defined above, said valve being mounted on a reservoir containing fluid product and a propellant gas.
  • said propellant gas comprises one or more HFA gases, such as HFA-134a and/or HFA-227 and/or HFA-152a.
  • said propellant gas includes HF01234ze.
  • top, bottom, lower, lower and lower refer to the upright position shown on the figures 1 and 2 and the terms “axial” and “radial” refer to the longitudinal central axis of the valve.
  • figure 1 represents a prior art metering valve at rest, in its upright storage position, that is, the position in which the valve is arranged above the reservoir.
  • figure 2 represents a metering valve according to an advantageous embodiment of the invention, during actuation. It should be noted that the valve of the figure 2 is also shown in an upright position, whereas the normal operating position of such a valve is an inverted position, with the valve positioned under the tank.
  • This valve is intended to be mounted on a tank (not shown) containing fluid and a propellant gas, preferably by means of a fastening element 5, which may be a crimp, screw, or snap-on cap, and advantageously with the interposition of a neck seal 6.
  • a ring 4 may be mounted around the valve body 10, in particular to reduce the dead volume in the inverted position and to limit the contact of the fluid with the neck seal 6.
  • This ring 4 may be of any shape, and the example of figures 1 and 2 This list is not exhaustive.
  • the tank contains the fluid product and the propellant gas, in particular a formulation consisting of one or more active ingredient(s) in suspension and/or solution in a liquefied propellant gas, and possibly excipients.
  • the propellant gas preferably comprises one or more HFA gases, such as HFA-134a and/or HFA-227 and/or HFA-152a, with or without ethanol.
  • HFA gases such as HFA-134a and/or HFA-227 and/or HFA-152a
  • other non-harmful gases such as HFO1234ze, may be used.
  • the metering valve shown on the figures 1 and 2 It comprises a valve body 10 extending along a central longitudinal axis and containing a metering chamber 20.
  • This metering chamber 20 is defined between two annular seals, a valve seal 21 and a chamber seal 22, in a well-known manner.
  • This metering chamber 20 is filled before or after each actuation with a dose of fluid product from the reservoir.
  • a valve 30 slides between a rest position, which is that shown on the figure 1 and a distribution position, in which the valve 30 is pushed into the valve body 10.
  • the valve 30 is forced towards its rest position by a spring 8, which is disposed in the valve body 10 and which cooperates on one side with this valve body 10, and on the other side with the valve 30, preferably with a radial collar 320 of the valve 30.
  • the valve 30 slides inside the dosing chamber 20 to allow the distribution of the contents of the latter when the valve is actuated.
  • the valve body 10 has a cylindrical portion 15 in which the spring 8 is disposed and in which the flange 320 slides between its rest and distribution positions. In the position of figures 1 and 2 This cylindrical portion 15 is the lower part of the valve body. This cylindrical portion 15 has one or more openings, such as slots, extending laterally within said cylindrical portion 15 of the valve body, along a portion of the axial height of the valve body in the direction of the longitudinal central axis. These openings allow the metering chamber 20 to be filled after each actuation, when, in the reversed operating position (with the valve positioned below the reservoir), the valve 30 returns from its dispensing position to its rest position.
  • openings such as slots
  • valve 30 can be made in two parts, namely an upper part 31 (also called valve top) and a lower part 32 (also called valve bottom).
  • the upper part 31 includes a central axial channel 35 provided with an axial outlet 301 and a radial inlet channel 302 which is disposed in the metering chamber 20 when the valve 30 is in the dispensing position.
  • the upper part 31 also includes a radial shoulder 310 which, in the rest position shown in the figure 1 , rests under the valve seal 21, in a known manner.
  • the lower part 32 is assembled inside the upper part 31.
  • An internal channel 33 is provided in the valve 30, particularly in the lower part 32, which allows the dosing chamber 20 to be connected to the reservoir, so that said dosing chamber 20 is filled when, after each actuation of the valve, the valve 30 returns to its rest position under the effect of spring 8. This filling takes place when the device is still in the reversed position of use, with the valve positioned below the reservoir.
  • valve 30 When the valve 30 is in its rest position, the metering chamber 20, outside the valve 30, is substantially isolated from the reservoir 1 by the interaction between the lower part 32 of the valve 30 and the chamber seal 22. In this rest position, the metering chamber 20 therefore remains connected to the reservoir only via the internal channel 33.
  • the valve shown in the figures 1 and 2 It is therefore a retention valve.
  • the invention is also applicable to other types of valves, in particular priming-free valves.
  • the volume of the dosing chamber 20 is defined by means of a chamber insert 40, of substantially cylindrical shape.
  • FIG 3 illustrates the anterior art valve chamber insert of the figure 1
  • the figures 4 to 8 show several different variants of a chamber insert according to the invention.
  • the chamber insert 40 has a cylindrical wall 49 whose radial thickness varies depending on the desired dosing chamber volume.
  • the volume of the dosing chamber 20 can be modified primarily by adjusting the thickness of this cylindrical wall 49. In the anterior art valve, this volume can vary between 25 and 75 ⁇ l.
  • the valve seal 21 rests on the upper edge 41 of the chamber insert 40, and the chamber seal 22 is in contact with the lower edge 43 of the chamber insert 40.
  • the upper edge 41 advantageously has a projecting profile 42 which penetrates the valve seal 21, and the lower edge 43 advantageously has a projecting profile 44 which penetrates the chamber seal 22.
  • the lower edge 43 extends radially inward by means of a lower flange 46, which increases the contact area with the chamber seal 22.
  • the lower edge 43 and said lower flange 46 together form a contact area with the chamber seal 22 that is always identical, regardless of the width of the cylindrical wall 49.
  • the positioning of the chamber seal 22 on the insert of chamber 40 is therefore always identical, regardless of the width of the cylindrical wall 49 and therefore the volume of the dosing chamber 20.
  • the behavior of the chamber seal 22 will always be the same, regardless of the volume of the dosing chamber 20.
  • the upper edge 41 extends radially inwards via an upper flange 47, which increases the contact area with the valve seal 21.
  • the upper edge 41 and the upper flange 47 together form a contact area with the valve seal 21 that is always identical, regardless of the width of the cylindrical wall 49.
  • the positioning of the valve seal 21 on the chamber insert 40 is therefore always identical, regardless of the width of the cylindrical wall 49 and thus the volume of the metering chamber 20. Consequently, the behavior of the valve seal 21 will always be the same, regardless of the volume of the metering chamber 20.
  • the volume of the dosing chamber 20 is defined exclusively within the chamber insert 40. Indeed, due to the closed cylindrical wall 49 and the two seals 21 and 22, the external volume located outside the chamber insert 40, between the valve body 10 and the cylindrical wall 49, is completely isolated from the dosing chamber. With a standard valve body as shown in the figure 1 This external volume can represent up to approximately 5 ⁇ l, which, for a dosing chamber volume of 25 to 75 ⁇ l, is not negligible. Even if it is not visible on the figure 1 , this external volume always exists between the valve body 10 and the cylindrical wall 49 of the chamber insert 40, due to the clearance required between these two parts to allow the insertion of the chamber insert 40 into the valve body 10.
  • the cylindrical wall 49 of the chamber insert 40 has at least one opening 48 connecting said dosing chamber 20 to said external volume.
  • the volume of the dosing chamber 20 is increased, on the one hand, by the addition of said external volume and, on the other hand, by the volume represented by each opening 48 in the cylindrical wall 49.
  • the chamber 40 according to the invention can have a volume greater than 75 ⁇ l, for example 85 ⁇ l. Volumes up to about 100 ⁇ l are conceivable, depending on the number and dimensions of the openings 48 in the cylindrical wall 49.
  • Another advantage of the invention is that by including the external volume in the dosing chamber, there is no longer a pressure difference between the inside and outside of the cylindrical wall 49 of the chamber insert 40.
  • a pressure difference could reach approximately 3 to 6 bar, depending on the nature of the propellant gas used, with a pressure of 1 bar in the external volume and a pressure of 4 to 7 bar in the metering chamber.
  • This pressure difference can, in some cases, cause deformation of the cylindrical wall 49 and consequently an undesirable change in the volume of the metering chamber 20.
  • THE figures 4 to 8 show several different variants of a chamber insert 40 according to the invention.
  • the example of the figure 5 is similar to that of the figure 6 except that the chamber insert does not have a top flange 47.
  • openings 48 formed by windows distributed around the periphery and extending over part of the height of the cylindrical wall 49 from the lower edge 43.
  • each opening 48 can be arbitrary.

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)

Claims (10)

  1. Dosierventil zur Abgabe eines fluiden Produkts, aufweisend einen Ventilkörper (10), der eine Dosierkammer (20) enthält, wobei die Dosierkammer (20) durch einen Kammereinsatz (40) und zwei ringförmige Dichtungen, eine Ventildichtung (21) und eine Kammerdichtung (22) definiert ist, wobei der Kammereinsatz (40) eine zylindrische Wand (49), einen oberen Rand (41), der mit der Ventildichtung (21) zusammenwirkt, und einen unteren Rand (43), der mit der Kammerdichtung (22) zusammenwirkt, aufweist, wobei ein Ventil (30) axial in dem Ventilkörper (10) zwischen einer Ruhestellung und einer Abgabestellung gleitet, um den Inhalt der Dosierkammer (20) selektiv abzugeben, wobei das Ventil (30) durch eine Feder (8), die einerseits mit dem Ventilkörper (10) und andererseits mit dem Ventil (30) zusammenwirkt, in seine Ruhestellung vorgespannt ist, dadurch gekennzeichnet, dass die zylindrische Wand (49) des Kammereinsatzes (40) mindestens eine Öffnung (48) aufweist, die die Dosierkammer (20) mit einem außerhalb des Kammereinsatzes (40) angeordneten Außenvolumen zwischen dem Ventilkörper (10) und der zylindrischen Wand (49) verbindet.
  2. Ventil nach Anspruch 1, wobei sich der obere Rand (41) des Kammereinsatzes (40) radial nach innen durch einen oberen Flansch (47) verlängert, der die Kontaktfläche mit der Ventildichtung (21) vergrößert, wobei die Kontaktfläche unabhängig von der Breite der zylindrischen Wand (49) immer gleich bleibt.
  3. Ventil nach Anspruch 1 oder 2, wobei sich der untere Rand (43) des Kammereinsatzes (40) radial nach innen durch einen unteren Flansch (46) verlängert, der die Kontaktfläche mit der Kammerdichtung (22) vergrößert, wobei die Kontaktfläche unabhängig von der Breite der zylindrischen Wand (49) immer gleich bleibt.
  4. Ventil nach einem der vorstehenden Ansprüche, wobei das Volumen der Dosierkammer (20) zwischen 25 und 100 µl veränderbar ist, ohne den Ventilkörper (10) zu verändern, indem die Dicke der zylindrischen Wand (49) und/oder die Anzahl, die Form und/oder die Abmessungen der Öffnungen (48) angepasst werden.
  5. Ventil nach einem der vorstehenden Ansprüche, wobei die zylindrische Wand (49) des Kammereinsatzes (40) eine einzige Öffnung (48) aufweist.
  6. Ventil nach einem der Ansprüche 1 bis 4, wobei die zylindrische Wand (49) des Kammereinsatzes (40) zwei diametral gegenüberliegende Öffnungen (48) aufweist.
  7. Ventil nach einem der Ansprüche 1 bis 4, wobei die zylindrische Wand (49) des Kammereinsatzes (40) eine Vielzahl von Öffnungen (48) aufweist, die auf dem Umfang der zylindrischen Wand (49) verteilt sind
  8. Vorrichtung zur Abgabe eines fluiden Produkts, dadurch gekennzeichnet, dass sie ein Dosierventil gemäß einem der vorstehenden Ansprüche umfasst, wobei das Ventil an einem Behälter angebracht ist, der das fluide Produkt und ein Treibgas enthält.
  9. Vorrichtung nach Anspruch 8, wobei das Treibgas ein oder mehrere HFA-Gase wie HFA-134a und/oder HFA-227 und/oder HFA-152a umfasst.
  10. Vorrichtung nach Anspruch 8, wobei das Treibgas HFO1234ze umfasst.
EP23703260.2A 2022-01-07 2023-01-04 Dosierventil mit verbesserter dosierkammer Active EP4460469B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2200114A FR3131738B1 (fr) 2022-01-07 2022-01-07 Valve doseuse avec chambre de dosage améliorée
PCT/FR2023/050008 WO2023131758A1 (fr) 2022-01-07 2023-01-04 Valve doseuse avec chambre de dosage ameliorée

Publications (2)

Publication Number Publication Date
EP4460469A1 EP4460469A1 (de) 2024-11-13
EP4460469B1 true EP4460469B1 (de) 2025-12-17

Family

ID=80786943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23703260.2A Active EP4460469B1 (de) 2022-01-07 2023-01-04 Dosierventil mit verbesserter dosierkammer

Country Status (5)

Country Link
US (1) US20250074692A1 (de)
EP (1) EP4460469B1 (de)
CN (1) CN118891201A (de)
FR (1) FR3131738B1 (de)
WO (1) WO2023131758A1 (de)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502732B1 (fr) * 1981-03-30 1985-08-30 Valois Sa Valve doseuse a position inversee pour recipient d'aerosol
EP0813490B1 (de) * 1995-03-10 2000-07-12 Minnesota Mining And Manufacturing Company Ventil für aerosolbehälter
GB2367809A (en) * 2000-10-12 2002-04-17 Bespak Plc Metering valve with collapsible chamber
WO2004096666A1 (en) * 2003-04-30 2004-11-11 Bespak Plc Metering valve
FR2860502B1 (fr) 2003-10-07 2007-09-14 Valois Sas Valve doseuse et dispositif de distribution de produit fluide comportant une telle valve
FR2999542B1 (fr) 2012-12-17 2014-12-05 Rexam Healthcare La Verpillier Valve doseuse de distribution d'un aerosol
FR3042785B1 (fr) 2015-10-22 2020-03-06 Nemera La Verpilliere Valve doseuse amelioree pour la distribution d'un fluide.
FR3107039B1 (fr) * 2020-02-07 2022-03-18 Aptar France Sas Valve doseuse avec chambre de dosage améliorée

Also Published As

Publication number Publication date
FR3131738A1 (fr) 2023-07-14
WO2023131758A1 (fr) 2023-07-13
FR3131738B1 (fr) 2024-03-08
US20250074692A1 (en) 2025-03-06
EP4460469A1 (de) 2024-11-13
CN118891201A (zh) 2024-11-01

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