EP0485244B1 - Ausgabeventil für einen Behälter mit einer unter einem Druck eines Gases stehenden Flüssigkeit und mit einem derartigen Ventil versehener Behälter - Google Patents

Ausgabeventil für einen Behälter mit einer unter einem Druck eines Gases stehenden Flüssigkeit und mit einem derartigen Ventil versehener Behälter Download PDF

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Publication number
EP0485244B1
EP0485244B1 EP91402481A EP91402481A EP0485244B1 EP 0485244 B1 EP0485244 B1 EP 0485244B1 EP 91402481 A EP91402481 A EP 91402481A EP 91402481 A EP91402481 A EP 91402481A EP 0485244 B1 EP0485244 B1 EP 0485244B1
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EP
European Patent Office
Prior art keywords
stem
valve
valve body
duct
spring
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
EP91402481A
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English (en)
French (fr)
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EP0485244A1 (de
Inventor
Gilles Baudin
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LOreal SA
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LOreal SA
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Publication of EP0485244A1 publication Critical patent/EP0485244A1/de
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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
    • B65D83/48—Lift valves, e.g. operated by push action

Definitions

  • a valve of this type is shown by FR-A-2 059 787.
  • This valve has a relatively large axial dimension and the two springs are not truly independent so that a change in the setting of one may cause a change in the setting of the other.
  • the object of the invention is, above all, to provide a valve of the type defined above which no longer has or to a lesser degree the drawbacks mentioned above.
  • a dispensing valve for a container containing a fluid under gas pressure in particular for an aerosol can, of the kind defined above, is characterized in that the two springs are arranged concentrically in parallel, that one end of the first and of the second spring is in abutment against a member stopped by a unilateral abutment of the rod, this organ being able to slide relative to the rod in the event of the latter coming out, that the second end of the first spring is in abutment against a stop secured to valve body, while the second end of the second spring is in abutment against a stop integral with the rod, the first spring which intervenes during dispensing being external to the second and its length being greater than that of the second, which intervenes for the evacuation in case of abnormal overpressure.
  • the valve is relatively compact and the independence of the springs makes it possible to adjust the intervention levels of each spring with precision, without there being interference from one on the other.
  • the support member is advantageously constituted by a rigid washer comprising a radial shoulder projecting inwards on its internal diameter and suitable for cooperating with an external radial shoulder of the rod.
  • the arrangement of the transverse orifices of the rod is advantageously such that, when the rod is at rest, the transverse orifice opening into the evacuation channel is on the same side of the sealing part as the valve body, while the other transverse orifice of the distribution channel is closed externally by said sealing part.
  • This sealing part may be constituted by a washer of elastomeric material, or the like, clamped in the vicinity of its outer periphery between the upper edge of the valve body and a cup provided at the upper part of the container.
  • the stop integral with the valve body, serving as a support for the first spring, is constituted by a shoulder projecting radially towards the inside of the valve body.
  • the valve is arranged to allow, in the event of overpressure, the evacuation to the outside of the gas causing the overpressure and the maintenance of the liquid fraction inside the container.
  • the lower part of the valve stem is arranged to close the communication between a connection pipe to a dip tube and the discharge passage when the stem is lifted as a result of an internal overpressure of the container, whereas '' an additional gas outlet is provided in the valve body above the sealing zone between the valve stem and the body to maintain the exhaust passage in connection with the upper part of the container and to allow the evacuation of the gas alone.
  • the lower end of the valve stem is advantageously provided with an O-ring seal while a frustoconical passage whose diameter decreases according to the direction of exit of the stem is provided in the valve body, the end of the rod provided with the O-ring moving in this passage which it comes to close, in the upper part, when the rod is raised, the blind channel of the rod turned towards the valve body communicating laterally with the interior volume of the valve body .
  • the end of the rod is preferably constituted by an insert comprising a transverse channel, and fixed, in particular by screwing, to the part of the rod where the blind channel opens, the radial shoulder constituted by the excess thickness of this insert on the rod constituting the stop for the second spring which intervenes in the event of evacuation.
  • the invention also relates to a container, in particular an aerosol can under gas pressure equipped with a valve as defined above.
  • Figure 1 of these drawings is a vertical axial section, with parts broken away, of a valve according to the invention, the rod being at rest in the closed position.
  • Figure 2 shows, similarly to the Figure 1, the valve while the rod is pressed by a user and occupies the dispensing position.
  • Figure 3 shows, similarly to Figure 1, the valve while the rod is out and occupies a discharge position due to an abnormal overpressure in the container.
  • FIG. 4 shows, similarly to FIG. 1, an alternative embodiment of the valve arranged to close a passage in the event of abnormal overpressure, the valve being shown in the rest position and therefore closed in FIG. 4.
  • Figure 5 shows the valve of Figure 4 in the dispensing position, rod pressed.
  • FIG. 6 finally, shows the valve of Figure 4 in the evacuation position, rod out.
  • a compressed gas contained under high pressure in a cartridge fitted with a pressure reducer can be used as an aerosol propellant.
  • the cartridge can have a volume of approximately 20 ml and the gas can be found under a pressure of 40 to 90 bars in a full cartridge.
  • the regulator delivers if necessary, during use, a quantity of gas at low pressure, of the order of 2 to 5 bars, determined, so that the pressure inside the aerosol can remains constant.
  • Safety valves have already been proposed which, in the event of an incident, release the contents of the container to the atmosphere in order to prevent bursting.
  • the invention aims to produce a valve of this type which is particularly compact and which makes it possible to precisely regulate the different levels of distribution and discharge pressure.
  • a dispensing valve 1 for a container (not shown), provided with a cup 2 in which the body 3 of the valve is crimped.
  • This valve body 3 has a cylindrical shape and is open at the top; it has on its outer periphery, near its upper end, a bulge 3 a for crimping, while its upper edge 3 b forms a sort of circular edge allowing to exert support on a reduced surface.
  • the lower part of the body 3 is constituted by a bottom 4 provided with a tube 5 intended to be connected to a dip tube (not shown) extending to the bottom of the container to take a liquid to be sprayed in the form of aerosol.
  • the valve 1 comprises a valve stem 6 movable in the body 3, in an axial translational movement, the stem 6 being coaxial with the body 3.
  • This rod 6 is provided, axially, with two blind channels 7, 8 aligned and opposite, each opening towards one end of the rod.
  • the two channels 7, 8 are separated by a transverse bottom 9 which can be provided substantially at mid-length of the rod 6.
  • Two transverse orifices 10, 11, opening respectively into the channels 7, 8, are provided in the lateral wall of the rod on either side axially from the bottom 9. These orifices 10, 11 can be angularly offset by 180 °, as illustrated in figure 1.
  • the first channel 7 and the associated transverse orifice 10 constitute a dispensing passage serving for the normal dispensing of the aerosol.
  • the other channel 8 and the associated transverse orifice 11 constitute an evacuation passage in the event of abnormal overpressure.
  • a sealing part 12 constituted by a washer of flexible material, in particular of elastomeric material, is held on the open end of the valve body.
  • the washer 12 is clamped against the rim 3b of the valve body by a folded part of the cup 2.
  • the inside diameter of the washer 12 presses tightly against the external surface of the rod 6 which can slide in this washer .
  • a first helical spring 13, coaxial with the body 3, is capable of urging the rod 6 in a direction corresponding to an exit from the rod.
  • This spring 13 is in abutment, at its end remote from the bottom 4, against a member 14, constituted by a rigid washer, stopped by a unilateral stop 15 of the rod 6.
  • This stop 15 is formed by a shoulder created at a reduction in the outside diameter of the rod 6.
  • the rigid washer 14 has a radial shoulder 16 projecting inwards over its inside diameter, suitable for cooperating with the external radial shoulder 15 of the rod.
  • the spring 13 is in abutment against a stop 17 secured to the valve body 3.
  • This stop 17 is constituted by shoulders 18 projecting radially inwards from the valve body 3 and regularly distributed angularly.
  • the outer upper edge 19 of the shoulders 18 is flared in the direction of the rod 6 so as to ensure good centering of the lower end of the spring 13.
  • An additional gas intake 4 a constituted by an orifice, is provided in the bottom 4 of the body 3 between two shoulders 18.
  • a second helical spring 20 is arranged concentrically with the spring 13, inside the latter, the diameter of this spring 20 being less than that of the spring 13.
  • the length of the spring 20 is less than that of the spring 13.
  • the upper end of the spring 20 is also in abutment against the washer 14.
  • the second end of this spring 20 is in abutment against a stop 21 secured to the rod 6.
  • This stop 21 is advantageously formed by a shoulder projecting radially towards the outside on the smaller diameter surface of the rod 6, in the vicinity of its lower end.
  • the assembly is arranged so that in the rest position of the rod 6, the transverse orifice 10 opens outwardly at the sealing washer 12 which closes this orifice, while the transverse orifice 11 is located at- below this washer 12 and opens into the body 3.
  • the transverse orifice 10 is connected to the internal volume of the body 3 and, under the effect of the internal pressure of the container, the product contained by this container is distributed through the orifice 10 and the distribution channel 7 for form an aerosol sprayed outside.
  • the rod 6 comes out more from the body 3.
  • the transverse orifice 11 has passed through the sealing washer 12, it comes into communication with the atmosphere, which allows the fluid to escape to the atmosphere through the evacuation channel. 8 and the orifice 11, until the pressure inside the container returns to an acceptable value.
  • the rod 6 then takes up the position of FIG. 1.
  • valve shown in Figures 1 to 3 therefore offers a guarantee of non-bursting, but it is nonetheless unpleasant to see all or part of the liquid contained in the container and in which the immersion tube is immersed, spreading to the outside the container.
  • FIGS. 4 to 6 The variant embodiment of FIGS. 4 to 6 is provided to guarantee not only the non-bursting of the container in the event of abnormal overpressure, but also to allow only the gaseous phase contained by the container to escape in the event of an incident (the container or canister being assumed in a vertical position, for example on a shelf).
  • the lower part 22 of the valve stem 6 is arranged to close the communication between the tubing 5 (and the plunger tube not shown connected to this tubing), and the discharge channel 8, when the stem is lifted as a result of an internal overpressure of the container.
  • the lower part 22 is constituted by a nozzle 23 with an outer diameter greater than that of the spring 20, this nozzle 23 comprising on the side opposite to the pipe 5, a blind bore 24 comprising a thread in which is screwed a thread provided on the exterior surface. from the end of the rod 6.
  • the shoulder 21 is formed by the upper transverse face of the end piece 23.
  • a diametral channel 25 is provided in the end piece 23 so as to communicate with the bottom of the bore 24 and to lead on either side to the cylindrical surface of the end piece 23.
  • the end piece 23 Towards its lower end, the end piece 23 has an annular groove 26 in which is mounted a seal 27 constituted by an O-ring, for example made of elastomeric material.
  • the lower end of the end piece 23 is able to move in a frustoconical passage 28 whose diameter decreases according to the direction of exit from the rod 6.
  • This passage 28 is advantageously provided in a sleeve 29 applied against the bottom 4 of the valve body 3 and whose external cylindrical surface matches the internal surface of the body 3.
  • the upper front end of the sleeve 29 constitutes the stop 17 for the first spring 13.
  • the diameter of the large base of the frusto-conical passage 28 is greater than the external diameter of the seal 27, while the diameter of the small base (upper base) of the passage 28 is less than the external diameter of the seal 27, while being greater than the external diameter tip 23.
  • the additional gas intake 4b is provided in the cylindrical wall of the body 3 above the stop 17, that is to say above the area where the seal between the seal 27 and the frustoconical passage 28.
  • the interior part of the body 3, where the channel 25 opens, will remain in connection with the interior volume of the container.
  • the transverse orifice 10 In the rest position of this FIG. 4, or closed position, the transverse orifice 10 is opposite the sealing washer 12.
  • the spring 13 plates the assembly formed by the rod 6, the washer 14 , the spring 20, the end piece 23 and the seal 27 against the inside of the washer 12.
  • the spraying of the aerosol can take place, the liquid being propelled through the tube 5 towards the outside, coming from the dip tube.
  • FIG. 6 illustrates the case of an operational incident due to an abnormal overpressure in the container, which is assumed to be vertical, for example placed on a shelf.
  • the seal 27 is applied sealingly against an area situated towards the upper end of this passage as illustrated in FIG. 6.
  • the assembly is provided so that, in this position, the transverse passage 11 has crossed the washer 12 and opens to the atmosphere.
  • the evacuation can then be done only by the additional gas intake 4 b , the channels 25 and 8 and the passage 11.
  • the axial size of the valve is reduced by the parallel arrangement of the springs.
  • the independence of action of these springs allows precise adjustments for their intervention levels.

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)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Nozzles (AREA)
  • Safety Valves (AREA)

Claims (9)

  1. Abgabeventil für einen Behälter, insbesondere für eine Aerosolflasche, der ein unter Gasdruck stehendes Fluid enthält, mit:
    - einem in einem Ventilkörper (3) beweglichen Ventilschaft (6), wobei der Schaft axial zwei gegenüberliegende und durch einen Boden (9) getrennte, blinde Kanäle (7,8) aufweist, die jeweils in ein Ende des Schaftes (6) münden, wobei zwei Queröffnungen (10,11) auf beiden Seiten des Bodens (9) in der Seitenwand des Schaftes angeordnet sind, wobei jede Öffnung jeweils mit einem Kanal kommuniziert, wobei der vom Ventilkörper entfernte Kanal und die zugehörige Queröffnung (10) einen Durchlaß zur Abgabe bilden, während der andere Kanal (8) und die zugehörige Queröffnung (11) einen Entlüftungsdurchlaß bilden;
    - einem in dem Ventilkörper befindlichen Dichtungsmittel (12), das von dem Schaft (6) durchquert wird;
    - einer ersten Spiralfeder (13), die den Schaft (6), bezogen auf den Ventilkörper (3), in eine Richtung belastet, die einem Ausfahren des Schaftes entspricht;
    - und einer zweiten Spiralfeder (20), die so angeordnet ist, daß sie einem Ausfahren des Schaftes (6) so lange entgegenwirkt, wie der Druck im Inneren des Behälters einen bestimmten Wert nicht übersteigt,
    wobei die Anordnung so ist, daß der Benutzer beim Hineindrücken des Schaftes (6) eine kommunizierende Verbindung des Abgabedurchlasses (10,7) mit dem Innenraum des Ventilkörpers herstellt und die Abgabe des Erzeugnisses bewirkt und, daß im Fall eines ungewöhnlichen Überdrucks, die zweite Feder (20) zusammengedrückt und der Schaft (6) angehoben ist, so daß der Entlüftungsdurchlaß (8,11) in die Atmosphäre mündet und ein Platzen des Behälters verhindert wird,
    dadurch gekennzeichnet, daß
    die beiden Federn (13,20) konzentrisch parallel angeordnet sind; daß ein Ende der ersten (13) und der zweiten (20) Feder gegen ein Bauteil (14) in Anlage kommem, das von einem in einer Richtung wirkenden Anschlag (15) des Schaftes gehalten wird, wobei das Bauteil (14) relativ zum Schaft, beim Ausfahren von letzterem, verschiebbar ist, und daß das zweite Ende der ersten Feder (13) gegen einen mit dem Ventilkörper (3) verbundenen Anschlag (17) in Anlage kommt, während das zweite Ende der zweiten Feder (20) gegen einen mit dem Schaft (6) verbundenen Anschlag (21) in Anlage kommt, wobei sich die erste Feder (13), die während der Abgabe beteiligt ist, außerhalb der zweiten (20) befindet und ihre Länge größer als die der zweiten (20) ist, welche bei der Entlüftung im Fall eines ungewöhnlichen Überdrucks beteiligt ist.
  2. Ventil gemäß Anspruch 1, dadurch gekennzeichnet, daß das Anlagemittel (14) aus einer starren Scheibe besteht, die auf ihrem inneren Durchmesser eine nach innen vorspringende radiale Schulter (16) umfaßt, welche mit einer radialen äußeren Schulter (15) des Schaftes zusammenwirken kann.
  3. Ventil gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Anordnung der Queröffnungen (10,11) des Schaftes so ist, daß wenn der Schaft (6) in Ruhestellung ist, sich die Queröffnung (11), die in den Entlüftungskanal (8) mündet, auf der gleichen Seite des Dichtungsmittels (12) wie der Ventilkörper (3) befindet, wohingegen die andere Queröffnung (10) des Abgabekanals außen von dem Dichtungsmittel (12) verschlossen ist.
  4. Ventil gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Dichtungsmittel (12) aus einer Scheibe aus elastomerem Material besteht, die in der Nähe ihres Außenumfangs zwischen der Oberkante (3b) des Ventilkörpers und einer im oberen Bereich des Behälters vorgesehenen Kappe (2) eingepreßt ist.
  5. Ventil gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der mit dem Ventilkörper (3) verbundene, als Anlage für die erste Feder (13) dienende Anschlag (17) aus einer Schulter besteht, die radial ins Innere des Ventilkörpers vorspringt.
  6. Ventil gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der untere Bereich (22) des Ventilschaftes (6) so angeordnet ist, daß die Verbindung zwischen einem Stutzen (5) zur Befestigung an einem Tauchrohr und dem Entlüftungsdurchlaß (8,11) verschlossen wird, wenn der Schaft infolge eines Überdrucks im Inneren der Flasche angehoben wird, wobei ein zusätzlicher Gaseinlaß (4b) in dem Ventilkörper (3) oberhalb des Dichtungsbereichs zwischen dem Ventilschaft (6) und dem Körper (3) vorgesehen ist, um eine Verbindung zwischen dem Entlüftungsdurchlaß (8,11) und dem oberen Bereich des Behälters aufrechtzuerhalten und eine Entlüftung des Gases allein zu ermöglichen.
  7. Ventil gemäß Anspruch 6, dadurch gekennzeichnet, daß der Ventilschaft (6) einen torusförmigen Dichtungsring (27) aufweist, während ein kegelstumpfartiger Durchlaß (28), dessen Durchmesser in Ausfahrrichtung des Schaftes abnimmt, in dem Ventilkörper vorgesehen ist, wobei sich das mit dem torusförmigen Ring versehene Ende des Schaftes in den oberen Bereich des zu verschließenden Durchlaßes verschiebt, wenn der Schaft (6) angehoben wird, wobei der zum Ventilkörper gerichtete blinde Kanal (8) des Schaftes seitlich mit dem Innenvolumen des Ventilkörpers kommuniziert.
  8. Ventil gemäß Anspruch 7, dadurch gekennzeichnet, daß das Ende des Schaftes aus einem angesetzten Bauteil (23) besteht, das einen Querkanal (25) umfaßt und das in dem Bereich des Schaftes befestigt ist, wo der blinde Kanal (8) mündet, wobei die von der Überdicke des auf dem Schaft befestigten Teils gebildete radiale Schulter einen Anschlag für die zweite Feder (20) bildet, die bei der Entlüftung beteiligt ist.
  9. Behälter, insbesondere Aerosolbehälter, der ein unter Gasdruck stehendes Fluid enthält und der mit einem Abgabeventil gemäß einem der vorhergehenden Ansprüche ausgestattet ist.
EP91402481A 1990-11-09 1991-09-18 Ausgabeventil für einen Behälter mit einer unter einem Druck eines Gases stehenden Flüssigkeit und mit einem derartigen Ventil versehener Behälter Expired - Lifetime EP0485244B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9013916 1990-11-09
FR9013916A FR2669094B1 (fr) 1990-11-09 1990-11-09 Valve de distribution pour un recipient contenant un fluide sous pression gazeuse et recipient equipe d'une telle valve.

Publications (2)

Publication Number Publication Date
EP0485244A1 EP0485244A1 (de) 1992-05-13
EP0485244B1 true EP0485244B1 (de) 1995-03-15

Family

ID=9402019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402481A Expired - Lifetime EP0485244B1 (de) 1990-11-09 1991-09-18 Ausgabeventil für einen Behälter mit einer unter einem Druck eines Gases stehenden Flüssigkeit und mit einem derartigen Ventil versehener Behälter

Country Status (7)

Country Link
US (1) US5183189A (de)
EP (1) EP0485244B1 (de)
JP (1) JP2995510B2 (de)
CA (1) CA2054892A1 (de)
DE (1) DE69108174T2 (de)
ES (1) ES2069847T3 (de)
FR (1) FR2669094B1 (de)

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US10113780B2 (en) 2011-11-14 2018-10-30 The Armor All/Stp Products Company Refrigerant charging assemblies and methods of use
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Also Published As

Publication number Publication date
JPH04279479A (ja) 1992-10-05
FR2669094B1 (fr) 1993-02-12
ES2069847T3 (es) 1995-05-16
FR2669094A1 (fr) 1992-05-15
DE69108174T2 (de) 1995-11-09
EP0485244A1 (de) 1992-05-13
DE69108174D1 (de) 1995-04-20
CA2054892A1 (fr) 1992-05-10
JP2995510B2 (ja) 1999-12-27
US5183189A (en) 1993-02-02

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