EP0658490A1 - Depressible valve for vaporising a liquid and pressurised container provided with such a valve - Google Patents

Depressible valve for vaporising a liquid and pressurised container provided with such a valve Download PDF

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Publication number
EP0658490A1
EP0658490A1 EP94402751A EP94402751A EP0658490A1 EP 0658490 A1 EP0658490 A1 EP 0658490A1 EP 94402751 A EP94402751 A EP 94402751A EP 94402751 A EP94402751 A EP 94402751A EP 0658490 A1 EP0658490 A1 EP 0658490A1
Authority
EP
European Patent Office
Prior art keywords
valve
chamber
rod
valve body
passage
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
EP94402751A
Other languages
German (de)
French (fr)
Other versions
EP0658490B1 (en
Inventor
Corine Sandou-Pascal
Jean-François Benoist
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.)
LOreal SA
Original Assignee
LOreal SA
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Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Publication of EP0658490A1 publication Critical patent/EP0658490A1/en
Application granted granted Critical
Publication of EP0658490B1 publication Critical patent/EP0658490B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D83/60—Contents and propellant separated
    • B65D83/62—Contents and propellant separated by membrane, bag, or the like
    • 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
    • B65D83/34—Cleaning or preventing clogging of the discharge passage
    • 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
    • B65D83/60—Contents and propellant separated
    • B65D83/66—Contents and propellant separated first separated, but finally mixed, e.g. in a dispensing head

Definitions

  • the invention relates to a push-in valve for dispensing in the sprayed form a liquid contained in a flexible bag, itself arranged inside a container maintained under gas pressure.
  • the valve, object of the invention is of the type which includes a valve body intended to be fixed in a cup, closing the container, with the interposition of a sealing washer between an open front end of the valve body. and the cup, and a control rod capable of sliding in the valve body between a rest position and an open position, the valve body forming a chamber which is isolated from the outside when the rod is at rest and cooperates with the sealing washer so as to close said chamber, the rod being held in this rest position by elastic return means, an additional gas intake orifice being provided in the side wall of the valve body, the body being provided, at its lower part, with a means for fixing the flexible bag containing the liquid.
  • FR-A-2 415 250 shows a valve of this kind for the dispensing, with mixing, of two products contained respectively in a flexible bag and in a container surrounding the bag.
  • the mixing of the products to be dispensed takes place in a chamber which is located in a push button above the valve.
  • the design is relatively complex.
  • a valve for dispensing in spray form a liquid contained in a flexible bag as defined above, which, while making it possible to mix the liquid and the propellant gas in the chamber of the valve body, avoids the entry of pressurized gas from the container into the flexible bag containing the liquid, as well as the flow of liquid to the container ;
  • the arrangement of such a valve has the advantage of allowing the use of the container which it equips in all positions but, unfortunately, it does not allow the chamber to be purged from the valve body, before and after each distribution of '' a dose of a liquid / gas mixture.
  • the object of the present invention is to propose a valve which does not have these drawbacks.
  • a valve for the dispensing in sprayed form of a liquid contained in a flexible bag itself disposed inside a container maintained under gas pressure comprises valve means able to put the flexible bag into communication with the chamber when the rod is pressed in, and to isolate said pocket from said chamber when the valve is in the rest state, these valve means being controlled by the displacement of the rod, and being able to establish said communication between the pocket and the chamber only after a stroke of a determined distance from the control rod, so that before and after each distribution of a dose of a liquid / gas mixture the chamber is purged by a breath of gas only.
  • the valve stem protrudes through an opening in the cup and is capable of sliding in leaktight manner in the sealing washer, this stem comprising a blind bore opening to its end remote from the valve body, while a transverse orifice is provided in the wall of the rod to open into the blind bore and, outside, at the sealing washer when the rod is in position rest, said transverse orifice then being closed by this sealing washer;
  • the end of the rod located in the valve body is provided with an extension suitable for cooperating with a passage between the chamber of the valve body and the flexible bag so that in the rest position of the valve stem, the passage is closed by the extension, while when the valve stem is when pressed, communication is established between the valve body chamber and the flexible bag.
  • the extension may consist of a pin, while a second sealing washer is provided in the bottom of the valve body, the aforesaid passage being constituted by the central opening of the washer leaktightly crossed by the pin, which comprises a longitudinal channel which communicates, at its lower end, with a transverse channel opening onto the external surface of the pin and, at its other end, with a passage provided in the valve stem and opening into the chamber of the valve body, the outlet of the lower transverse channel located to the right of the second sealing washer and being closed by this washer when the rod is in the rest position, the pin and the sealing washer constituting said valve means.
  • the thickness of the second sealing washer is chosen so that when the rod is pushed in for opening, the orifice located towards the lower end of the blind channel of the rod between in communication with the valve body chamber before the transverse channel located in the lower part of the pin comes into communication with a nozzle and the flexible bag, which makes it possible to purge the valve body chamber in a intermediate insertion position of the valve stem.
  • the pin is fitted into a recess provided at the end of the rod located in the valve body.
  • the passage for communication between the chamber of the valve body and the flexible bag is provided in the valve body, while the extension of the valve stem has an intermediate zone of diameter smaller than that of the passage and an end zone of sufficient diameter to close the passage, the assembly being such that when the valve stem is pressed, the intermediate zone is at the level of the passage and establishes communication between the flexible bag and the chamber of the valve, while when the valve stem is in the rest position, the end zone is at the passage and cuts off all communication.
  • the extension may consist of a coaxial cylindrical element fixed at the end of the valve stem and the end of which faces the flexible bag is provided with an overmolding of elastomeric material constituting the said end zone.
  • extension and the valve stem form a single piece.
  • the end zone of the extension can advantageously have a bell shape, with a relatively thin and flexible wall, the concavity of which faces the flexible pocket.
  • valve means of the valve comprise a valve preventing any communication at rest between the pocket and the chamber of the valve body, the opening of this valve being controlled by the valve stem when it is pressed.
  • the valve can be independent of the valve stem and rest against a seat, formed by a second sealing washer, under the action of a return spring, the seat being provided with a central passage, and the valve being located on the side of the seat opposite the valve stem, the latter comprising a clean extension finger to pass through the central passage and to move the valve away from its seat when the valve stem is pressed.
  • the stroke of the rod necessary for the opening of the valve is advantageously greater than that necessary to bring the orifice of the blind bore of the valve rod into communication with the chamber located inside the valve body.
  • the invention also relates to a container containing a flexible bag in which there is liquid to be sprayed, maintained under gas pressure contained in the container, the latter being characterized in that it comprises a dispensing valve as defined previously.
  • Figure 1 of these drawings shows, in partial vertical section, a gas pressure container, equipped with a valve according to the invention, in the rest or closed position.
  • Figure 2 shows the valve of Figure 1 in the intermediate purge position of the valve body chamber.
  • Figure 3 shows the valve of Figure 1 in the open position.
  • Figure 4 illustrates an alternative embodiment of the valve with valve independent of the rod.
  • Figure 5 shows, in axial section, a variant of the valve of Figures 1 to 3, in the closed or rest position.
  • Figure 6 shows, in axial section, another variant of the valve of Figures 1 to 3, at the start of opening.
  • Figure 7 shows, in axial section, the valve of Figure 6 in the fully open position.
  • Figure 8 is a section along line VIII-VIII of Figure 7.
  • a container arranged in the form of a dome 5 having a central opening closed by a cup 6 set on the rolled edge 7 of the opening.
  • the container has a rigid wall, in particular a metal wall, under gas pressure. Inside the container is arranged a flexible pocket 2 containing a liquid to be dispensed in spray form.
  • the container consists of a metal can, of cylindrical shape, the bottom of which is provided with a hole fitted with a valve making it possible to fill and recharge the container with pressurized gas, in particular with compressed air.
  • the container may also consist of walls of hard thermoplastic and have any shape and be manufactured, for example, by extrusion blow molding or injection.
  • a valve 8 is fixed in the cup 6.
  • This valve 8 comprises a valve body 9 of generally cylindrical shape, around which is crimped a kind of sleeve 10 provided in the center of the cup, the upper end of the sleeve 10 having an opening central 11 provided in a cap 12 of the sleeve.
  • a sealing washer 13 is interposed between the open front end of the valve body 9 and the internal surface of the cap 12 of the sleeve 10.
  • the valve 8 can also be fixed by any other means, for example by screwing, snap or bonding through an intermediate piece.
  • the valve 8 also includes a control rod 14 capable of sliding in the valve body 9 between a rest position shown in FIG. 1 and an open position shown in FIG. 2.
  • valve stem 14 projects, through the opening 11, through a part 15 surmounted by a push button 16, which comprises channels and a dispensing nozzle 17.
  • the part 15 of the rod has a blind bore 18 opening at its end remote from the valve body 9.
  • a transverse orifice 19 is provided in the wall of the rod 14. This orifice 19 opens into the blind bore 18 and, outside, at the sealing washer 13 when the rod 14 is in the rest position.
  • Elastic means formed by a helical compression spring 20 are provided between a stop zone of the valve body 9 and a stop zone of the rod 14 to maintain this rod in the rest position illustrated in FIG. 1.
  • the spring 20 bears against a second sealing washer 21 which is applied against a shoulder 22 constituting the bottom of the body 9.
  • the central opening of the washer 21 constitutes a passage p between the chamber C and the pocket 2.
  • a nozzle 23 extends the body 9 towards the bottom 3 of the container.
  • the flexible pocket 2 is tightly engaged around this nozzle 23, which constitutes a means of fixing said pocket.
  • the nozzle 23 communicates with the interior chamber C of the body 9.
  • the valve stem 14 has a base 24, of larger diameter than the part 15, located in the body 9.
  • This base 24 has a diameter less than the internal diameter of the body 9 so that a sufficient radial clearance exists between the cylindrical outline of this base 24 and the internal surface of the body 9 for the passage of the gas and the liquid to be sprayed.
  • the end 25, located in the valve body 9, of the rod 14 is arranged in the form of a cylindrical projection of diameter smaller than the base 24, and around which is engaged one end of the spring 20.
  • This end 25 has a bent passage 26 opening, at one end, on its outer surface and, at its other end, substantially in the axial direction, in a recess 27 provided in the bottom of the projection 25 and open in the direction of the nozzle 23.
  • the end 25 of the rod 14 is provided with an extension pin 28, coaxial, in the direction of the nozzle 23.
  • the pin 28 sealingly passes through the central passage p, of the washer 21, when the valve is at rest ( Figure 1).
  • the pin 28 has a longitudinal channel 29 opening axially at its upper end so as to communicate with the channel 26.
  • the channel 29 does not open axially at its lower end but communicates with a transverse channel 30 opening on the outer surface of the pin.
  • the pin 28 can be force-fitted into the recess 27.
  • the fixing of the pin 28 to the rod 14 can be completed by welding or by bonding.
  • the assembly is such that when the rod 14 is in the rest position, for example when the shoulder formed by the base 24 is in abutment against the sealing washer 13, the transverse channel 30 is located in line with the washer seal 21, and is therefore closed.
  • the pin 28 and the sealing washer 21 form valve means.
  • An orifice 31 constituting an additional gas intake is provided in the side wall of the body 9.
  • the assembly is further provided so that, when the rod 14 is pushed in, under the effect of a pressure exerted on the button 16, the transverse orifice 19 escapes from the washer 13 and opens into the chamber C limited by the body 9 before the transverse channel 30 opens in the nozzle 23.
  • the container being, for example, held head up.
  • the transverse orifice 19 communicates with the chamber C of the valve body, while the transverse channel 30 opens in the nozzle 23.
  • Liquid from the bag 2 can pass through the channels 30, 29 and 26 to reach the chamber C which constitutes a mixing chamber between the liquid, and the gas which arrives through the orifice 31.
  • the mixture thus formed escapes through the orifice 19 towards the nozzle 17 and is sprayed into the atmosphere.
  • the liquid contained in the bag 2 is isolated from the gas of the container, the latter can be used in any position and not only head up as indicated above.
  • the fact that in the rest position the liquid in the bag 2 cannot pass into the container makes it possible to avoid spraying a jet of liquid at the nozzle 17, at the place of a fog.
  • it is possible, during a spraying to pass from one position to another, in particular by passing horizontally, and to guarantee a constant quality of spray.
  • the thickness of the sealing washer 21 is chosen such that during part of the driving stroke of the rod 14, the transverse channel 30 remains closed by the washer 21 while the transverse orifice 19 communicates with the chamber C. Under these conditions, during this intermediate phase illustrated in FIG. 2, pressurized gas coming from the container and passing through the orifice 31 can escape through the transverse orifice 19 by purging the chamber C.
  • the transverse channel 30 When the insertion of the rod 14 is sufficient to reach the position illustrated in FIG. 3, the transverse channel 30 then opens into the nozzle 23 and allows the liquid contained in the pocket 2 to flow into the chamber C to be driven by the propellant and be sprayed through the nozzle 17.
  • the thickness of the washer 21 combined with the judicious arrangement of the different channels and dimensions of the elements, makes it possible to obtain a sequencing of the respective opening of the orifices with a purging effect for an intermediate position (FIG. 2) between the closed position ( Figure 1) and the fully open position ( Figure 3).
  • this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.
  • FIG. 4 illustrates an alternative embodiment of the valve 208, in which the valve means of the flexible bag 202 and the nozzle 223 comprise a valve 232 preventing any communication at rest between the bag 202 and the chamber C of the body valve 209.
  • the opening of the valve 232 is controlled by the rod 214 when it is pressed.
  • the nozzle 223 is provided under a nozzle 233 attached in a sealed manner, for example by snap-fastening, on the lower end of the valve body 209.
  • the shoulder 222 constituting the bottom of the body 209, has a flat face on the opposite side to chamber C.
  • the second sealing washer 221 is disposed against the underside of the shoulder 222.
  • the valve 232 is located in the end piece 233.
  • the valve 232 is constituted by a sort of plate, the peripheral edge of which is provided with a circular edge 235 bearing against the washer 221.
  • a central passage p is defined by orifices provided in the bottom of the body 209 and in the washer 221, orifices which are superimposed.
  • the valve stem 214 is extended, in the direction of the plate forming the valve 232, by a finger 236 of sufficiently small diameter to cross, with sufficient clearance, the passage p.
  • the distance d between the lower edge of the orifice 219 and the lower face of the washer 213 is less than the distance D between the lower end of the finger 236 and the plate of the valve 232 in the closed position (d ⁇ D).
  • the valve 232 closes the passage p and cuts off all communication between the pocket 202 and the chamber C, which is in communication through the orifice 231 with the container containing the gas under pressure.
  • the gas under pressure cannot penetrate into the bag 202 and, conversely, liquid from the bag 202 cannot flow towards the chamber C and, through the orifice 231, into the container containing the gas.
  • the liquid in the bag 202 can then pass into the chamber C, mix with the gas to form a mist which escapes through the orifice 219 and the channel 218 for spraying.
  • this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.
  • the extension 528, of the valve stem 514 is constituted by a coaxial cylindrical element fixed at the end of the valve stem 514.
  • This extension 528 can be made of rigid material, and its end facing the flexible pocket is provided with an overmolding 38 of elastomeric material, enveloping said end of the extension 528 on a certain axial distance.
  • the lower part 523, of the valve body 509 is arranged in the form of a cylindrical sleeve with a diameter slightly smaller than that of the valve body, and on which the flexible pocket 502 is fixed.
  • the communication between the chamber C of the valve body 509 and the bore of the part 523 which communicates with the flexible bag, is ensured by the cylindrical, coaxial passage p, determined by a constriction marking the separation between the chamber C and the part 523.
  • the axial length of the overmolding 38 is sufficient so that in the rest position of the valve, illustrated in FIG. 5, this overmolding 38 is engaged, at least in part, in the passage p.
  • the diameter of the overmolding 38 is sufficient to seal this passage p.
  • the rod 528 thus has an intermediate zone 528 a of diameter smaller than that of the passage p, and an end zone 528 b , corresponding to the overmolding 38, of sufficient diameter to close the passage p.
  • the sliding guide of the extension 528 is completed by a sleeve 39 forcibly engaged in the bore of the part 523 and coming into abutment against the shoulder marking the bottom of this bore.
  • the wall of the sleeve 39, facing the passage p, has an annular recess 40 into which opens a cylindrical channel 41, offset radially relative to the axis of the sleeve, and causing the recess 40 to communicate with the flexible pocket 502.
  • the diameter of the bore of the sleeve 39 is equal to the diameter of the passage p or slightly greater than this diameter.
  • Chamber C is provided, at its lower part, with radial ribs 42, for example four in number offset by 90 °, against which the lower end of spring 520 bears.
  • valve in FIG. 5 The operation of the valve in FIG. 5 is similar to that described in connection with FIGS. 1 to 3.
  • valve stem 514 When the valve stem 514 is pushed in, the orifice 519 is released from the sealing washer 513 and enters into communication with the chamber C, which allows, firstly, the purging of this chamber by the pressurized gas which can pass through port 531.
  • the overmolding 38 remains partially engaged in the passage p and prevents any communication between the pocket 502 and the chamber C.
  • this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.
  • the extension 628 forms a single piece with the valve stem 614.
  • the intermediate zone 628 a of this extension has a diameter smaller than that of the passage p.
  • This zone 628 a is connected to the valve stem by a frustoconical part and, on the opposite side, to the end zone 628 b of sufficient diameter to close the passage p.
  • This end zone 628 b is arranged substantially in the shape of a bell, with a concavity 43 facing the flexible pocket 602.
  • the wall 44 limiting the concavity 43 is relatively thin and flexible so as to be able to deform elastically, under the effect pressure in the flexible bag so that it presses tightly against the wall of the passage p.
  • This passage p comprises, on the side facing the flexible pocket 602, a partially cylindrical recess 45 making it possible to establish communication between the chamber C and the pocket 602 for sufficient insertion of the rod 614 as illustrated in FIG. 7.
  • the lower part 623 of the valve body 609 has the same outside diameter as this valve body. It comprises one or more external peripheral beads 46 facilitating the watertight fixing of the flexible bag.
  • FIGS. 6 to 8 The operation of the valve in FIGS. 6 to 8 is similar to that described in connection with FIGS. 1 to 3, and in FIG. 5.
  • the orifice 619 is located in line with the washer 613 and is closed in a sealed manner by this washer while the end 628 b closes the passage p.
  • the orifice 619 communicates with the chamber C which allows a purge, before the end 628 b discovers the recess 45.
  • the recess 45 is discovered by the end 628 b and a communication is established, by this recess 45 and the annular space limited between the wall of the passage p and the wall of the zone 628 a , between the chamber C and the flexible bag 602. The product from the bag 602 is then dispensed.
  • this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.

Abstract

Push-down (depressible) valve for dispensing in vaporised (atomised) form a liquid contained in a flexible pouch (2) itself located inside a container under the pressure of a gas, including a valve body (9) designed to be fixed into a dished part with the interposition of a sealing washer (13) between an open frontal end of the valve body and the dished part, an operating shank (14) able to slide between a position of rest and an open position, the valve body forming a chamber (C) which is isolated from the outside when the shank is at rest, the shank being kept in this position by an elastic return means, an additional gas intake orifice (31) provided in the lateral wall of the valve body, valve means (p, 28) able to place the flexible pouch in communication with the chamber (C) when the shank (14) is pushed in, and to isolate the said pouch (2) from the said chamber (C) when the valve is in the state of rest, these valve means being controlled by the displacement of the shank, and being able to establish the said communication between the pouch (2) and the chamber (C) only after the operating shank (14) has covered a given distance (D). <IMAGE>

Description

L'invention est relative à une valve à enfoncement pour la distribution sous forme pulvérisée d'un liquide contenu dans une poche flexible, elle-même disposée à l'intérieur d'un récipient maintenu sous pression de gaz.The invention relates to a push-in valve for dispensing in the sprayed form a liquid contained in a flexible bag, itself arranged inside a container maintained under gas pressure.

La valve, objet de l'invention, est du genre de celles qui comportent un corps de valve destiné à être fixé dans une coupelle, fermant le récipient, avec interposition d'une rondelle d'étanchéité entre une extrémité frontale ouverte du corps de valve et la coupelle, et une tige de commande apte à coulisser dans le corps de valve entre une position de repos et une position d'ouverture, le corps de valve formant une chambre qui est isolée de l'extérieur lorsque la tige est au repos et coopère avec la rondelle d'étanchéité de manière à fermer ladite chambre, la tige étant maintenue dans cette position de repos par des moyens élastiques de rappel, un orifice de prise de gaz additionnel étant prévu dans la paroi latérale du corps de valve, le corps étant muni, à sa partie inférieure, d'un moyen de fixation de la poche flexible contenant le liquide.The valve, object of the invention, is of the type which includes a valve body intended to be fixed in a cup, closing the container, with the interposition of a sealing washer between an open front end of the valve body. and the cup, and a control rod capable of sliding in the valve body between a rest position and an open position, the valve body forming a chamber which is isolated from the outside when the rod is at rest and cooperates with the sealing washer so as to close said chamber, the rod being held in this rest position by elastic return means, an additional gas intake orifice being provided in the side wall of the valve body, the body being provided, at its lower part, with a means for fixing the flexible bag containing the liquid.

FR-A-2 415 250 montre une valve de ce genre pour la distribution, avec mélange, de deux produits contenus respectivement dans une poche flexible et dans un récipient entourant la poche. Le mélange des produits à distribuer a lieu dans une chambre qui se trouve dans un bouton-poussoir surmontant la valve. La conception est relativement complexe.FR-A-2 415 250 shows a valve of this kind for the dispensing, with mixing, of two products contained respectively in a flexible bag and in a container surrounding the bag. The mixing of the products to be dispensed takes place in a chamber which is located in a push button above the valve. The design is relatively complex.

On connaît, par ailleurs, d'après US-A-3 283 962 une valve à trois positions pour un récipient aérosol dans lequel le liquide à pulvériser est directement au contact du gaz propulseur, sans être enfermé dans une poche flexible. Un orifice de prise de gaz est prévu dans la paroi de la chambre du corps de valve ; toutefois, lorsque la tige est dans la position de distribution, cet orifice est fermé par une collerette solidaire de la tige.Known, moreover, from US-A-3,283,962 a three-position valve for an aerosol container in which the liquid to be sprayed is directly in contact with the propellant, without being enclosed in a flexible bag. A gas intake opening is provided in the wall of the valve body chamber; however, when the rod is in the dispensing position, this orifice is closed by a collar secured to the rod.

On a également proposé, notamment selon DE-A-1 812 718, une valve pour la distribution sous forme pulvérisée d'un liquide contenu dans une poche flexible, telle que définie précédemment, qui, tout en permettant de réaliser un mélange du liquide et du gaz propulseur dans la chambre du corps de valve, permette d'éviter l'entrée de gaz sous pression du récipient dans la poche flexible contenant le liquide, ainsi que l'écoulement de liquide vers le récipient ; l'agencement d'une telle valve présente l'avantage de permettre l'utilisation du récipient qu'elle équipe dans toutes les positions mais, malheureusement, il ne permet pas de purger la chambre du corps de valve, avant et après chaque distribution d'une dose d'un mélange liquide/gaz.There has also been proposed, in particular according to DE-A-1 812 718, a valve for dispensing in spray form a liquid contained in a flexible bag, as defined above, which, while making it possible to mix the liquid and the propellant gas in the chamber of the valve body, avoids the entry of pressurized gas from the container into the flexible bag containing the liquid, as well as the flow of liquid to the container ; the arrangement of such a valve has the advantage of allowing the use of the container which it equips in all positions but, unfortunately, it does not allow the chamber to be purged from the valve body, before and after each distribution of '' a dose of a liquid / gas mixture.

La présente invention a pour but de proposer une valve ne présentant pas ces inconvénients.The object of the present invention is to propose a valve which does not have these drawbacks.

Selon l'invention, une valve pour la distribution sous forme pulvérisée d'un liquide contenu dans une poche flexible elle-même disposée à l'intérieur d'un récipient maintenu sous pression de gaz, du genre défini précédemment, comporte des moyens de soupape aptes à mettre en communication la poche flexible avec la chambre lorsque la tige est enfoncée, et à isoler ladite poche de ladite chambre lorsque la valve est à l'état de repos, ces moyens de soupape étant commandés par le déplacement de la tige, et étant aptes à n'établir ladite communication entre la poche et la chambre qu'après une course d'une distance déterminée de la tige de commande, de sorte qu'avant et après chaque distribution d'une dose d'un mélange liquide/gaz la chambre est purgée par un souffle de gaz uniquement.According to the invention, a valve for the dispensing in sprayed form of a liquid contained in a flexible bag itself disposed inside a container maintained under gas pressure, of the type defined above, comprises valve means able to put the flexible bag into communication with the chamber when the rod is pressed in, and to isolate said pocket from said chamber when the valve is in the rest state, these valve means being controlled by the displacement of the rod, and being able to establish said communication between the pocket and the chamber only after a stroke of a determined distance from the control rod, so that before and after each distribution of a dose of a liquid / gas mixture the chamber is purged by a breath of gas only.

Selon un premier mode de réalisation, la tige de valve, de manière connue, fait saillie à travers une ouverture de la coupelle et est propre à coulisser de manière étanche dans la rondelle d'étanchéité, cette tige comportant un alésage borgne s'ouvrant à son extrémité éloignée du corps de valve, tandis qu'un orifice transversal est prévu dans la paroi de la tige pour déboucher dans l'alésage borgne et, à l'extérieur, au niveau de la rondelle d'étanchéité lorsque la tige est en position de repos, ledit orifice transversal étant alors fermé par cette rondelle d'étanchéité ; selon l'invention, l'extrémité de la tige située dans le corps de valve est munie d'un prolongement propre à coopérer avec un passage entre la chambre du corps de valve et la poche flexible de telle manière qu'en position de repos de la tige de valve, le passage est fermé par le prolongement, tandis que lorsque la tige de valve est enfoncée, une communication est établie entre la chambre du corps de valve et la poche flexible.According to a first embodiment, the valve stem, in known manner, protrudes through an opening in the cup and is capable of sliding in leaktight manner in the sealing washer, this stem comprising a blind bore opening to its end remote from the valve body, while a transverse orifice is provided in the wall of the rod to open into the blind bore and, outside, at the sealing washer when the rod is in position rest, said transverse orifice then being closed by this sealing washer; according to the invention, the end of the rod located in the valve body is provided with an extension suitable for cooperating with a passage between the chamber of the valve body and the flexible bag so that in the rest position of the valve stem, the passage is closed by the extension, while when the valve stem is when pressed, communication is established between the valve body chamber and the flexible bag.

Le prolongement peut être constitué par un pion, tandis qu'une deuxième rondelle d'étanchéité est prévue dans le fond du corps de valve, le susdit passage étant constitué par l'ouverture centrale de la rondelle traversée de manière étanche par le pion, lequel comporte un canal longitudinal qui communique, à son extrémité inférieure, avec un canal transversal débouchant sur la surface extérieure du pion et, à son autre extrémité, avec un passage prévu dans la tige de valve et débouchant dans la chambre du corps de valve, la sortie du canal transversal inférieur se trouvant au droit de la deuxième rondelle d'étanchéité et étant fermée par cette rondelle lorsque la tige est en position de repos, le pion et la rondelle d'étanchéité constituant lesdits moyens de soupape.The extension may consist of a pin, while a second sealing washer is provided in the bottom of the valve body, the aforesaid passage being constituted by the central opening of the washer leaktightly crossed by the pin, which comprises a longitudinal channel which communicates, at its lower end, with a transverse channel opening onto the external surface of the pin and, at its other end, with a passage provided in the valve stem and opening into the chamber of the valve body, the outlet of the lower transverse channel located to the right of the second sealing washer and being closed by this washer when the rod is in the rest position, the pin and the sealing washer constituting said valve means.

De préférence, l'épaisseur de la deuxième rondelle d'étanchéité est choisie de manière telle que lors de l'enfoncement de la tige en vue de l'ouverture, l'orifice situé vers l'extrémité inférieure du canal borgne de la tige entre en communication avec la chambre du corps de valve avant que le canal transversal situé en partie inférieure du pion n'entre en communication avec un ajutage et la poche flexible, ce qui permet d'effectuer une purge de la chambre du corps de valve dans une position intermédiaire d'enfoncement de la tige de valve.Preferably, the thickness of the second sealing washer is chosen so that when the rod is pushed in for opening, the orifice located towards the lower end of the blind channel of the rod between in communication with the valve body chamber before the transverse channel located in the lower part of the pin comes into communication with a nozzle and the flexible bag, which makes it possible to purge the valve body chamber in a intermediate insertion position of the valve stem.

Avantageusement, le pion est emmanché dans un évidement prévu à l'extrémité de la tige située dans le corps de valve.Advantageously, the pin is fitted into a recess provided at the end of the rod located in the valve body.

Selon une variante de réalisation, le passage pour la communication entre la chambre du corps de valve et la poche flexible est prévu dans le corps de valve, tandis que le prolongement de la tige de valve comporte une zone intermédiaire de diamètre inférieur à celui du passage et une zone d'extrémité de diamètre suffisant pour fermer le passage, l'ensemble étant tel que lorsque la tige de valve est enfoncée, la zone intermédiaire se trouve au niveau du passage et établit une communication entre la poche flexible et la chambre de la valve, tandis que lorsque la tige de valve est en position de repos, la zone d'extrémité se trouve au niveau du passage et coupe toute communication.According to an alternative embodiment, the passage for communication between the chamber of the valve body and the flexible bag is provided in the valve body, while the extension of the valve stem has an intermediate zone of diameter smaller than that of the passage and an end zone of sufficient diameter to close the passage, the assembly being such that when the valve stem is pressed, the intermediate zone is at the level of the passage and establishes communication between the flexible bag and the chamber of the valve, while when the valve stem is in the rest position, the end zone is at the passage and cuts off all communication.

Le prolongement peut être constitué par un élément cylindrique coaxial fixé en bout de la tige de valve et dont l'extrémité tournée vers la poche flexible est munie d'un surmoulage en matière élastomère constituant la susdite zone d'extrémité.The extension may consist of a coaxial cylindrical element fixed at the end of the valve stem and the end of which faces the flexible bag is provided with an overmolding of elastomeric material constituting the said end zone.

Selon une autre possibilité, le prolongement et la tige de valve forment une seule pièce. La zone d'extrémité du prolongement peut, avantageusement, avoir une forme en cloche, à paroi relativement mince et souple, dont la concavité est tournée vers la poche flexible.Alternatively, the extension and the valve stem form a single piece. The end zone of the extension can advantageously have a bell shape, with a relatively thin and flexible wall, the concavity of which faces the flexible pocket.

Selon une autre possibilité, les moyens de soupape de la valve comprennent un clapet empêchant toute communication au repos entre la poche et la chambre du corps de valve, l'ouverture de ce clapet étant commandée par la tige de valve lorsqu'elle est enfoncée.According to another possibility, the valve means of the valve comprise a valve preventing any communication at rest between the pocket and the chamber of the valve body, the opening of this valve being controlled by the valve stem when it is pressed.

Le clapet peut être indépendant de la tige de valve et reposer contre un siège, formé par une deuxième rondelle d'étanchéité, sous l'action d'un ressort de rappel, le siège étant muni d'un passage central, et le clapet étant situé du côté du siège opposé à la tige de valve , cette dernière comportant un doigt de prolongement propre à traverser le passage central et à écarter le clapet de son siège, lorsque la tige de valve est enfoncée. La course de la tige nécessaire à l'ouverture du clapet est avantageusement supérieure à celle nécessaire pour mettre en communication l'orifice de l'alésage borgne de la tige de valve avec la chambre située à l'intérieur du corps de valve.The valve can be independent of the valve stem and rest against a seat, formed by a second sealing washer, under the action of a return spring, the seat being provided with a central passage, and the valve being located on the side of the seat opposite the valve stem, the latter comprising a clean extension finger to pass through the central passage and to move the valve away from its seat when the valve stem is pressed. The stroke of the rod necessary for the opening of the valve is advantageously greater than that necessary to bring the orifice of the blind bore of the valve rod into communication with the chamber located inside the valve body.

L'invention est également relative à un récipient contenant une poche flexible dans laquelle se trouve du liquide à pulvériser, maintenue sous pression de gaz contenu dans le récipient, ce dernier étant caractérisé par le fait qu'il comporte une valve de distribution telle que définie précédemment.The invention also relates to a container containing a flexible bag in which there is liquid to be sprayed, maintained under gas pressure contained in the container, the latter being characterized in that it comprises a dispensing valve as defined previously.

L'invention consiste, mises à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions dont il sera plus explicitement question ci-après à propos d'exemples de réalisation décrits avec référence aux dessins ci-annexés, mais qui ne sont nullement limitatifs.The invention consists, apart from the arrangements set out above, of a certain number of other arrangements which will be more explicitly discussed below in connection with embodiments described with reference to the attached drawings, but which are in no way limiting.

La figure 1, de ces dessins, montre, en coupe verticale partielle, un récipient sous pression de gaz, équipé d'une valve selon l'invention, en position de repos ou fermée.Figure 1 of these drawings shows, in partial vertical section, a gas pressure container, equipped with a valve according to the invention, in the rest or closed position.

La figure 2 montre la valve de la figure 1 en position intermédiaire de purge de la chambre du corps de valve.Figure 2 shows the valve of Figure 1 in the intermediate purge position of the valve body chamber.

La figure 3 montre la valve de la figure 1 en position ouverte.Figure 3 shows the valve of Figure 1 in the open position.

La figure 4 illustre une variante de réalisation de la valve avec clapet indépendant de la tige.Figure 4 illustrates an alternative embodiment of the valve with valve independent of the rod.

La figure 5 montre, en coupe axiale, une variante de la valve des figures 1 à 3, en position fermée ou de repos.Figure 5 shows, in axial section, a variant of the valve of Figures 1 to 3, in the closed or rest position.

La figure 6 montre, en coupe axiale, une autre variante de la valve des figures 1 à 3, en début d'ouverture.Figure 6 shows, in axial section, another variant of the valve of Figures 1 to 3, at the start of opening.

La figure 7, montre, en coupe axiale, la valve de la figure 6 en position d'ouverture complète.Figure 7 shows, in axial section, the valve of Figure 6 in the fully open position.

La figure 8 est une coupe suivant la ligne VIII-VIII de la figure 7.Figure 8 is a section along line VIII-VIII of Figure 7.

En se reportant à la figure 1 des dessins, on peut voir la partie supérieure d'un récipient agencée sous la forme d'un dôme 5 comportant une ouverture centrale fermée par une coupelle 6 sertie sur le bord roulé 7 de l'ouverture. Le récipient est à paroi rigide, notamment métallique, sous pression de gaz. A l'intérieur du récipient est disposée une poche flexible 2 contenant un liquide à distribuer sous forme pulvérisée. Le récipient est constitué par un bidon métallique, de forme cylindrique, dont le fond est muni d'un trou équipé d'une valve permettant de remplir et de recharger le récipient en gaz sous pression, notamment en air comprimé. Le récipient peut être constitué également de parois en thermoplastique dur et présenter une forme quelconque et être fabriqué, par exemple, par extrusion-soufflage ou injection.Referring to Figure 1 of the drawings, one can see the upper part of a container arranged in the form of a dome 5 having a central opening closed by a cup 6 set on the rolled edge 7 of the opening. The container has a rigid wall, in particular a metal wall, under gas pressure. Inside the container is arranged a flexible pocket 2 containing a liquid to be dispensed in spray form. The container consists of a metal can, of cylindrical shape, the bottom of which is provided with a hole fitted with a valve making it possible to fill and recharge the container with pressurized gas, in particular with compressed air. The container may also consist of walls of hard thermoplastic and have any shape and be manufactured, for example, by extrusion blow molding or injection.

Une valve 8 est fixée dans la coupelle 6. Cette valve 8 comporte un corps de valve 9 de forme générale cylindrique, autour duquel est sertie une sorte de manchon 10 prévu au centre de la coupelle, l'extrémité supérieure du manchon 10 comportant une ouverture centrale 11 prévue dans un chapeau 12 du manchon. Une rondelle d'étanchéité 13 est interposée entre l'extrémité frontale ouverte du corps de valve 9 et la surface interne du chapeau 12 du manchon 10. La fixation de la valve 8 peut également être effectuée par tout autre moyen, par exemple par vissage, claquage ou collage par le biais d'une pièce intermédiaire.A valve 8 is fixed in the cup 6. This valve 8 comprises a valve body 9 of generally cylindrical shape, around which is crimped a kind of sleeve 10 provided in the center of the cup, the upper end of the sleeve 10 having an opening central 11 provided in a cap 12 of the sleeve. A sealing washer 13 is interposed between the open front end of the valve body 9 and the internal surface of the cap 12 of the sleeve 10. The valve 8 can also be fixed by any other means, for example by screwing, snap or bonding through an intermediate piece.

La valve 8 comporte également une tige de commande 14 propre à coulisser dans le corps de valve 9 entre une position de repos représentée sur la figure 1 et une position d'ouverture représentée sur la figure 2.The valve 8 also includes a control rod 14 capable of sliding in the valve body 9 between a rest position shown in FIG. 1 and an open position shown in FIG. 2.

La tige de valve 14 fait saillie, à travers l'ouverture 11, par une partie 15 surmontée d'un bouton-poussoir 16, lequel comporte des canaux et une buse 17 de distribution.The valve stem 14 projects, through the opening 11, through a part 15 surmounted by a push button 16, which comprises channels and a dispensing nozzle 17.

La partie 15 de la tige comporte un alésage borgne 18 s'ouvrant à son extrémité éloignée du corps de valve 9. Un orifice transversal 19 est prévu dans la paroi de la tige 14. Cet orifice 19 débouche dans l'alésage borgne 18 et, à l'extérieur, au niveau de la rondelle d'étanchéité 13 lorsque la tige 14 est en position de repos.The part 15 of the rod has a blind bore 18 opening at its end remote from the valve body 9. A transverse orifice 19 is provided in the wall of the rod 14. This orifice 19 opens into the blind bore 18 and, outside, at the sealing washer 13 when the rod 14 is in the rest position.

Des moyens élastiques formés par un ressort de compression 20 en hélice sont prévus entre une zone de butée du corps de valve 9 et une zone de butée de la tige 14 pour maintenir cette tige en position de repos illustrée sur la figure 1. Le ressort 20 prend appui contre une deuxième rondelle d'étanchéité 21 qui est appliquée contre un épaulement 22 constituant le fond du corps 9. L'ouverture centrale de la rondelle 21 constitue un passage p entre la chambre C et la poche 2. Un ajutage 23 prolonge le corps 9 vers le fond 3 du récipient. La poche flexible 2 est engagée de manière étanche autour de cet ajutage 23, qui constitue un moyen de fixation de ladite poche. L'ajutage 23 communique avec la chambre intérieure C du corps 9.Elastic means formed by a helical compression spring 20 are provided between a stop zone of the valve body 9 and a stop zone of the rod 14 to maintain this rod in the rest position illustrated in FIG. 1. The spring 20 bears against a second sealing washer 21 which is applied against a shoulder 22 constituting the bottom of the body 9. The central opening of the washer 21 constitutes a passage p between the chamber C and the pocket 2. A nozzle 23 extends the body 9 towards the bottom 3 of the container. The flexible pocket 2 is tightly engaged around this nozzle 23, which constitutes a means of fixing said pocket. The nozzle 23 communicates with the interior chamber C of the body 9.

La tige de valve 14 comporte une embase 24, de plus fort diamètre que la partie 15, située dans le corps 9. Cet embase 24 a un diamètre inférieur au diamètre interne du corps 9 de telle sorte qu'un jeu radial suffisant existe entre le contour cylindrique de cette embase 24 et la surface interne du corps 9 pour le passage du gaz et du liquide à pulvériser. L'extrémité 25, située dans le corps de valve 9, de la tige 14 est agencée sous la forme d'une saillie cylindrique de diamètre inférieur à l'embase 24, et autour de laquelle est engagée une extrémité du ressort 20.The valve stem 14 has a base 24, of larger diameter than the part 15, located in the body 9. This base 24 has a diameter less than the internal diameter of the body 9 so that a sufficient radial clearance exists between the cylindrical outline of this base 24 and the internal surface of the body 9 for the passage of the gas and the liquid to be sprayed. The end 25, located in the valve body 9, of the rod 14 is arranged in the form of a cylindrical projection of diameter smaller than the base 24, and around which is engaged one end of the spring 20.

Cette extrémité 25 comporte un passage coudé 26 débouchant, à une extrémité, sur sa surface extérieure et, à son autre extrémité, sensiblement suivant la direction axiale, dans un évidement 27 prévu dans le fond de la saillie 25 et ouvert en direction de l'ajutage 23.This end 25 has a bent passage 26 opening, at one end, on its outer surface and, at its other end, substantially in the axial direction, in a recess 27 provided in the bottom of the projection 25 and open in the direction of the nozzle 23.

L'extrémité 25 de la tige 14 est munie d'un pion de prolongement 28, coaxial, en direction de l'ajutage 23. Le pion 28 traverse de manière étanche le passage central p, de la rondelle 21, lorsque la valve est au repos (figure 1). Le pion 28 comporte un canal longitudinal 29 débouchant axialement à son extrémité supérieure de manière à communiquer avec le canal 26. Le canal 29 ne débouche pas axialement à son extrémité inférieure mais communique avec un canal transversal 30 débouchant sur la surface extérieure du pion. Le pion 28 peut être emmanché à force dans l'évidement 27. La fixation du pion 28 à la tige 14 peut être complétée par soudage ou par collage.The end 25 of the rod 14 is provided with an extension pin 28, coaxial, in the direction of the nozzle 23. The pin 28 sealingly passes through the central passage p, of the washer 21, when the valve is at rest (Figure 1). The pin 28 has a longitudinal channel 29 opening axially at its upper end so as to communicate with the channel 26. The channel 29 does not open axially at its lower end but communicates with a transverse channel 30 opening on the outer surface of the pin. The pin 28 can be force-fitted into the recess 27. The fixing of the pin 28 to the rod 14 can be completed by welding or by bonding.

L'ensemble est tel que lorsque la tige 14 est en position de repos, par exemple lorsque l'épaulement formé par l'embase 24 est en appui contre la rondelle d'étanchéité 13, le canal transversal 30 se trouve au droit de la rondelle d'étanchéité 21, et est donc fermé.The assembly is such that when the rod 14 is in the rest position, for example when the shoulder formed by the base 24 is in abutment against the sealing washer 13, the transverse channel 30 is located in line with the washer seal 21, and is therefore closed.

Le pion 28 et la rondelle d'étanchéité 21 forment des moyens de soupape.The pin 28 and the sealing washer 21 form valve means.

Un orifice 31 constituant une prise de gaz additionnel est prévu dans la paroi latérale du corps 9.An orifice 31 constituting an additional gas intake is provided in the side wall of the body 9.

L'ensemble est en outre prévu pour que, lors de l'enfoncement de la tige 14, sous l'effet d'une pression exercée sur le bouton 16, l'orifice transversal 19 échappe à la rondelle 13 et débouche dans la chambre C limitée par le corps 9 avant que le canal transversal 30 ne s'ouvre dans l'ajutage 23.The assembly is further provided so that, when the rod 14 is pushed in, under the effect of a pressure exerted on the button 16, the transverse orifice 19 escapes from the washer 13 and opens into the chamber C limited by the body 9 before the transverse channel 30 opens in the nozzle 23.

On voit que dans la position repos de la tige 14, illustrée sur la figure 1, toute communication est coupée entre la poche flexible 2 et le récipient. Dans ces conditions, si le récipient est maintenu tête en haut, comme illustré sur la figure 1, le gaz sous pression du récipient qui pénètre dans le corps de valve 9 par l'orifice 31 ne peut entrer dans la poche flexible 2.We see that in the rest position of the rod 14, illustrated in Figure 1, all communication is cut between the flexible bag 2 and the container. Under these conditions, if the container is held head up, as illustrated in FIG. 1, the pressurized gas from the container which enters the valve body 9 through the orifice 31 cannot enter the flexible bag 2.

Si l'on retourne tête en bas le récipient, le liquide de la poche 2 ne peut en sortir, ni se répandre dans la chambre C du corps de valve et passer, par l'orifice 31, dans le récipient.If the container is turned upside down, the liquid in the bag 2 cannot escape therefrom or spill into the chamber C of the valve body and pass through the orifice 31 into the container.

Pour distribuer sous forme pulvérisée le liquide contenu dans la poche 2, il suffit d'appuyer, de manière classique, sur le bouton 16, le récipient étant, par exemple, tenu tête en haut. Lorsque l'enfoncement de la tige 14 est suffisant, l'orifice transversal 19 communique avec la chambre C du corps de valve, tandis que le canal transversal 30 s'ouvre dans l'ajutage 23. Du liquide de la poche 2 peut passer par les canaux 30, 29 et 26 pour arriver dans la chambre C qui constitue une chambre de mélange entre le liquide, et le gaz qui arrive par l'orifice 31. Le mélange ainsi formé s'échappe par l'orifice 19 vers la buse 17 et est pulvérisé dans l'atmosphère.To distribute in liquid form the liquid contained in the bag 2, it suffices to press, in a conventional manner, on the button 16, the container being, for example, held head up. When the penetration of the rod 14 is sufficient, the transverse orifice 19 communicates with the chamber C of the valve body, while the transverse channel 30 opens in the nozzle 23. Liquid from the bag 2 can pass through the channels 30, 29 and 26 to reach the chamber C which constitutes a mixing chamber between the liquid, and the gas which arrives through the orifice 31. The mixture thus formed escapes through the orifice 19 towards the nozzle 17 and is sprayed into the atmosphere.

Du fait que le liquide contenu dans la poche 2 est isolé du gaz du récipient, ce dernier peut être utilisé dans toute position et non seulement tête en haut comme indiqué ci-dessus. En particulier, si le récipient est utilisé tête en bas, le fait qu'en position de repos le liquide de la poche 2 ne puisse passer dans le récipient permet d'éviter la pulvérisation d'un jet de liquide à la buse 17, au lieu d'un brouillard. En outre, il est possible, lors d'une pulvérisation, de passer d'une position à l'autre, en particulier en passant par l'horizontale, et de garantir une qualité de spray constante.Because the liquid contained in the bag 2 is isolated from the gas of the container, the latter can be used in any position and not only head up as indicated above. In particular, if the container is used upside down, the fact that in the rest position the liquid in the bag 2 cannot pass into the container makes it possible to avoid spraying a jet of liquid at the nozzle 17, at the place of a fog. In addition, it is possible, during a spraying, to pass from one position to another, in particular by passing horizontally, and to guarantee a constant quality of spray.

L'épaisseur de la rondelle d'étanchéité 21 est choisie de manière telle que pendant une partie de la course d'enfoncement de la tige 14, le canal transversal 30 reste obturé par la rondelle 21 alors que l'orifice transversal 19 communique avec la chambre C. Dans ces conditions, lors de cette phase intermédiaire illustrée par la figure 2, du gaz sous pression provenant du récipient et traversant l'orifice 31 peut s'échapper par l'orifice transversal 19 en réalisant une purge de la chambre C.The thickness of the sealing washer 21 is chosen such that during part of the driving stroke of the rod 14, the transverse channel 30 remains closed by the washer 21 while the transverse orifice 19 communicates with the chamber C. Under these conditions, during this intermediate phase illustrated in FIG. 2, pressurized gas coming from the container and passing through the orifice 31 can escape through the transverse orifice 19 by purging the chamber C.

Lorsque l'enfoncement de la tige 14 est suffisant pour atteindre la position illustrée sur la figure 3, le canal transversal 30 débouche alors dans l'ajutage 23 et permet au liquide contenu dans la poche 2 de s'écouler dans la chambre C pour être entraîné par le gaz propulseur et être pulvérisé à travers la buse 17.When the insertion of the rod 14 is sufficient to reach the position illustrated in FIG. 3, the transverse channel 30 then opens into the nozzle 23 and allows the liquid contained in the pocket 2 to flow into the chamber C to be driven by the propellant and be sprayed through the nozzle 17.

Ainsi, l'épaisseur de la rondelle 21, combinée avec l'agencement judicieux des différents canaux et dimensions des éléments, permet d'obtenir un séquencement de l'ouverture respectif des orifices avec un effet de purge pour une position intermédiaire (figure 2) entre la position fermée (figure 1) et la position d'ouverture totale (figure 3).Thus, the thickness of the washer 21, combined with the judicious arrangement of the different channels and dimensions of the elements, makes it possible to obtain a sequencing of the respective opening of the orifices with a purging effect for an intermediate position (FIG. 2) between the closed position (Figure 1) and the fully open position (Figure 3).

Comme on le voit, cette disposition permet une purge de la chambre C avant et après chaque distribution d'une dose d'un mélange liquide/gaz.As can be seen, this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.

La figure 4 illustre une variante de réalisation de la valve 208, dans laquelle les moyens de soupape de la poche flexible 202 et de l'ajutage 223 comprennent un clapet 232 empêchant toute communication au repos entre la poche 202 et la chambre C du corps de valve 209.FIG. 4 illustrates an alternative embodiment of the valve 208, in which the valve means of the flexible bag 202 and the nozzle 223 comprise a valve 232 preventing any communication at rest between the bag 202 and the chamber C of the body valve 209.

L'ouverture du clapet 232 est commandée par la tige 214 lorsqu'elle est enfoncée.The opening of the valve 232 is controlled by the rod 214 when it is pressed.

Les différents éléments de la valve de la figure 4 identiques ou jouant des rôles analogues à des éléments déjà décrits à propos des figures 1 à 3 sont désignés par des références numériques dont les chiffres des unités et des dizaines sont identiques, mais précédés du chiffre 2 des centaines. Leur description ne sera pas reprise ou ne sera effectuée que succinctement.The different elements of the valve of FIG. 4 which are identical or playing roles analogous to elements already described in connection with FIGS. 1 to 3 are designated by numerical references, the numbers of units and tens of which are identical, but preceded by the number 2 hundreds. Their description will not be repeated or will be made only succinctly.

L'ajutage 223 est prévu sous un embout 233 rapporté de manière étanche, par exemple par encliquetage, sur l'extrémité inférieure du corps de valve 209. L'épaulement 222, constituant le fond du corps 209, présente une face plane du côté opposé à la chambre C. La deuxième rondelle d'étanchéité 221 est disposée contre la face inférieure de l'épaulement 222. Le clapet 232 est situé dans l'embout 233. Un ressort de compression 234, en appui à une extrémité contre une paroi de l'embout 233, applique le clapet 232 de manière étanche contre la rondelle 221. Le clapet 232 est constitué par une sorte de plateau dont le bord périphérique est muni d'une arête 235 circulaire venant en appui contre la rondelle 221. Un passage central p est défini par des orifices prévus dans le fond du corps 209 et dans la rondelle 221, orifices qui sont superposés.The nozzle 223 is provided under a nozzle 233 attached in a sealed manner, for example by snap-fastening, on the lower end of the valve body 209. The shoulder 222, constituting the bottom of the body 209, has a flat face on the opposite side to chamber C. The second sealing washer 221 is disposed against the underside of the shoulder 222. The valve 232 is located in the end piece 233. A compression spring 234, bearing at one end against a wall of the end piece 233, applies the valve 232 sealingly against the washer 221. The valve 232 is constituted by a sort of plate, the peripheral edge of which is provided with a circular edge 235 bearing against the washer 221. A central passage p is defined by orifices provided in the bottom of the body 209 and in the washer 221, orifices which are superimposed.

La tige 214 de valve est prolongée, en direction du plateau formant le clapet 232, par un doigt 236 de diamètre suffisamment réduit pour traverser, avec un jeu suffisant, le passage p.The valve stem 214 is extended, in the direction of the plate forming the valve 232, by a finger 236 of sufficiently small diameter to cross, with sufficient clearance, the passage p.

En position de repos, illustrée sur la figure 4, obtenue lorsque le ressort 220 est détendu, l'orifice transversal 219 est fermé par la première rondelle d'étanchéité 213.In the rest position, illustrated in FIG. 4, obtained when the spring 220 is relaxed, the transverse orifice 219 is closed by the first sealing washer 213.

De préférence, la distance d entre le bord inférieur de l'orifice 219 et la face inférieure de la rondelle 213, est plus petite que la distance D entre l'extrémité inférieure du doigt 236 et le plateau du clapet 232 en position fermée (d < D). Dans ces conditions, lors de l'enfoncement de la tige 214, une phase intermédiaire de purge est assurée comme expliqué précédemment.Preferably, the distance d between the lower edge of the orifice 219 and the lower face of the washer 213 is less than the distance D between the lower end of the finger 236 and the plate of the valve 232 in the closed position (d <D). Under these conditions, when the insertion of the rod 214, an intermediate purge phase is ensured as explained above.

Le fonctionnement de la valve de la figure 4 résulte immédiatement des explications qui précèdent.The operation of the valve of Figure 4 immediately results from the foregoing explanations.

Lorsque la tige 214 est dans la position de repos illustrée sur la figure 4, le clapet 232 ferme le passage p et coupe toute communication entre la poche 202 et la chambre C, qui est en communication par l'orifice 231 avec le récipient contenant le gaz sous pression. Quelle que soit la position du récipient, le gaz sous pression ne peut pénétrer dans la poche 202 et, inversement, du liquide de la poche 202 ne peut s'écouler vers la chambre C et, à travers l'orifice 231, dans le récipient contenant le gaz.When the rod 214 is in the rest position illustrated in FIG. 4, the valve 232 closes the passage p and cuts off all communication between the pocket 202 and the chamber C, which is in communication through the orifice 231 with the container containing the gas under pressure. Whatever the position of the container, the gas under pressure cannot penetrate into the bag 202 and, conversely, liquid from the bag 202 cannot flow towards the chamber C and, through the orifice 231, into the container containing the gas.

Lorsque la tige 214 est enfoncée, l'orifice 219 est d'abord découvert, ce qui permet une sortie de gaz avec purge de la chambre C. L'enfoncement de la tige 214 se poursuivant, l'extrémité inférieure du doigt 236 entre en contact avec le clapet 232 et l'écarte de la rondelle d'étanchéité 221.When the rod 214 is depressed, the orifice 219 is first uncovered, which allows a gas outlet with purging of the chamber C. The penetration of the rod 214 continues, the lower end of the finger 236 enters contact with the valve 232 and the gap of the sealing washer 221.

Le liquide de la poche 202 peut alors passer dans la chambre C, se mélanger avec le gaz pour former un brouillard qui s'échappe par l'orifice 219 et le canal 218 en vue de sa pulvérisation.The liquid in the bag 202 can then pass into the chamber C, mix with the gas to form a mist which escapes through the orifice 219 and the channel 218 for spraying.

Comme on le voit, cette disposition permet une purge de la chambre C avant et après chaque distribution d'une dose d'un mélange liquide/gaz.As can be seen, this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.

En se reportant à la figure 5, on peut voir une variante de réalisation de la valve des figures 1 à 3, en position fermée ou de repos. Les éléments identiques ou jouant des rôles analogues à des éléments déjà décrits à propos des figures 1 à 3 sont désignés par des références numériques ayant les mêmes chiffres des unités et des dizaines, mais précédés du chiffre 5 des centaines. La description de ces éléments ne sera pas reprise ou ne sera effectuée que succinctement.Referring to Figure 5, we can see an alternative embodiment of the valve of Figures 1 to 3, in the closed or rest position. Elements identical or playing roles analogous to elements already described with reference to FIGS. 1 to 3 are designated by numerical references having the same numbers of units and tens, but preceded by the number 5 of hundreds. The description of these elements will not be repeated or will be made only succinctly.

Le prolongement 528, de la tige de valve 514, est constitué par un élément cylindrique coaxial fixé en bout de la tige de valve 514. Ce prolongement 528 peut être réalisé en matière rigide, et son extrémité tournée vers la poche flexible est munie d'un surmoulage 38 en matière élastomère, enveloppant ladite extrémité du prolongement 528 sur une certaine distance axiale. La partie inférieure 523, du corps de valve 509, est agencée sous la forme d'un manchon cylindrique de diamètre légèrement plus faible que celui du corps de valve, et sur lequel vient se fixer la poche flexible 502. La communication entre la chambre C du corps de valve 509 et l'alésage de la partie 523 qui communique avec la poche flexible, est assurée par le passage p cylindrique, coaxial, déterminé par un étranglement marquant la séparation entre la chambre C et la partie 523.The extension 528, of the valve stem 514, is constituted by a coaxial cylindrical element fixed at the end of the valve stem 514. This extension 528 can be made of rigid material, and its end facing the flexible pocket is provided with an overmolding 38 of elastomeric material, enveloping said end of the extension 528 on a certain axial distance. The lower part 523, of the valve body 509, is arranged in the form of a cylindrical sleeve with a diameter slightly smaller than that of the valve body, and on which the flexible pocket 502 is fixed. The communication between the chamber C of the valve body 509 and the bore of the part 523 which communicates with the flexible bag, is ensured by the cylindrical, coaxial passage p, determined by a constriction marking the separation between the chamber C and the part 523.

La longueur axiale du surmoulage 38 est suffisante pour que dans la position de repos de la valve, illustrée sur la figure 5, ce surmoulage 38 soit engagé, au moins en partie, dans le passage p. Le diamètre du surmoulage 38 est suffisant pour fermer de manière étanche ce passage p.The axial length of the overmolding 38 is sufficient so that in the rest position of the valve, illustrated in FIG. 5, this overmolding 38 is engaged, at least in part, in the passage p. The diameter of the overmolding 38 is sufficient to seal this passage p.

La tige 528 présente, ainsi, une zone intermédiaire 528a de diamètre inférieur à celui du passage p, et une zone d'extrémité 528b, correspondant au surmoulage 38, de diamètre suffisant pour fermer le passage p.The rod 528 thus has an intermediate zone 528 a of diameter smaller than that of the passage p, and an end zone 528 b , corresponding to the overmolding 38, of sufficient diameter to close the passage p.

Le guidage en coulissement du prolongement 528 est complété par un manchon 39 engagé à force dans l'alésage de la partie 523 et venant en butée contre l'épaulement marquant le fond de cet alésage. La paroi du manchon 39, tournée vers le passage p, comporte un évidement annulaire 40 dans lequel débouche un canal cylindrique 41, déporté radialement par rapport à l'axe du manchon, et faisant communiquer l'évidement 40 avec la poche flexible 502. Le diamètre de l'alésage du manchon 39 est égal au diamètre du passage p ou légèrement supérieur à ce diamètre.The sliding guide of the extension 528 is completed by a sleeve 39 forcibly engaged in the bore of the part 523 and coming into abutment against the shoulder marking the bottom of this bore. The wall of the sleeve 39, facing the passage p, has an annular recess 40 into which opens a cylindrical channel 41, offset radially relative to the axis of the sleeve, and causing the recess 40 to communicate with the flexible pocket 502. The diameter of the bore of the sleeve 39 is equal to the diameter of the passage p or slightly greater than this diameter.

La chambre C est munie, à sa partie inférieure, de nervures radiales 42, par exemple au nombre de quatre décalées de 90°, contre lesquelles prend appui l'extrémité inférieure du ressort 520.Chamber C is provided, at its lower part, with radial ribs 42, for example four in number offset by 90 °, against which the lower end of spring 520 bears.

Le fonctionnement de la valve de la figure 5 est semblable à celui décrit à propos des figures 1 à 3.The operation of the valve in FIG. 5 is similar to that described in connection with FIGS. 1 to 3.

Lorsque la tige de valve 514 est enfoncée, l'orifice 519 est dégagé de la rondelle d'étanchéité 513 et entre en communication avec la chambre C, ce qui permet, dans un premier temps, la purge de cette chambre par le gaz sous pression qui peut passer par l'orifice 531. Le surmoulage 38 reste engagé, en partie, dans le passage p et empêche toute communication entre la poche 502 et la chambre C.When the valve stem 514 is pushed in, the orifice 519 is released from the sealing washer 513 and enters into communication with the chamber C, which allows, firstly, the purging of this chamber by the pressurized gas which can pass through port 531. The overmolding 38 remains partially engaged in the passage p and prevents any communication between the pocket 502 and the chamber C.

La poursuite de l'enfoncement de la tige 514 fait sortir, vers le bas, le surmoulage 38 du passage p ce qui établit une communication entre la chambre C et l'évidement 40, lui-même en communication avec la poche 502 par le canal 41. Le produit contenu dans la poche 502 est alors distribué comme expliqué précédemment.Continued penetration of the rod 514 causes the overmolding 38 to come out downward from the passage p, which establishes a communication between the chamber C and the recess 40, itself in communication with the pocket 502 via the channel. 41. The product contained in the bag 502 is then dispensed as explained above.

Comme on le voit, cette disposition permet une purge de la chambre C avant et après chaque distribution d'une dose d'un mélange liquide/gaz.As can be seen, this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.

En se reportant aux figures 6 à 8, on peut voir une variante de réalisation de la valve de la figure 5. Les éléments jouant des rôles identiques à des éléments déjà décrits à propos de cette figure 5 sont désignés par des références numériques dont les chiffres des unités et des dizaines sont identiques mais dont le chiffre des centaines est égal à 6.Referring to Figures 6 to 8, we can see an alternative embodiment of the valve of Figure 5. The elements playing roles identical to elements already described in connection with this Figure 5 are designated by reference numerals whose numbers units and tens are identical but whose number of hundreds is equal to 6.

Dans cette variante, le prolongement 628 forme une seule pièce avec la tige de valve 614. La zone intermédiaire 628a de ce prolongement a un diamètre inférieur à celui du passage p. Cette zone 628a se raccorde à la tige de valve par une partie tronconique et, du côté opposé, à la zone d'extrémité 628b de diamètre suffisant pour fermer le passage p. Cette zone d'extrémité 628b est agencée sensiblement en forme de cloche, avec une concavité 43 tournée vers la poche flexible 602. La paroi 44 limitant la concavité 43 est relativement mince et souple de manière à pouvoir se déformer élastiquement, sous l'effet de la pression dans la poche flexible de sorte qu'elle s'applique de manière étanche contre la paroi du passage p. Ce passage p comporte, du côté tourné vers la poche flexible 602, un décrochement partiellement cylindrique 45 permettant d'établir la communication entre la chambre C et la poche 602 pour un enfoncement suffisant de la tige 614 tel qu'illustré sur la figure 7.In this variant, the extension 628 forms a single piece with the valve stem 614. The intermediate zone 628 a of this extension has a diameter smaller than that of the passage p. This zone 628 a is connected to the valve stem by a frustoconical part and, on the opposite side, to the end zone 628 b of sufficient diameter to close the passage p. This end zone 628 b is arranged substantially in the shape of a bell, with a concavity 43 facing the flexible pocket 602. The wall 44 limiting the concavity 43 is relatively thin and flexible so as to be able to deform elastically, under the effect pressure in the flexible bag so that it presses tightly against the wall of the passage p. This passage p comprises, on the side facing the flexible pocket 602, a partially cylindrical recess 45 making it possible to establish communication between the chamber C and the pocket 602 for sufficient insertion of the rod 614 as illustrated in FIG. 7.

La partie inférieure 623 du corps de valve 609 a le même diamètre extérieur que ce corps de valve. Elle comporte un ou plusieurs bourrelets périphériques extérieurs 46 facilitant la fixation étanche de la poche flexible.The lower part 623 of the valve body 609 has the same outside diameter as this valve body. It comprises one or more external peripheral beads 46 facilitating the watertight fixing of the flexible bag.

Le fonctionnement de la valve des figures 6 à 8 est semblable à celui décrit à propos des figures 1 à 3, et de la figure 5.The operation of the valve in FIGS. 6 to 8 is similar to that described in connection with FIGS. 1 to 3, and in FIG. 5.

En position de repos ou de fermeture (non représentée), l'orifice 619 se trouve au droit de la rondelle 613 et est fermé de manière étanche par cette rondelle tandis que l'extrémité 628b ferme le passage p.In the rest or closed position (not shown), the orifice 619 is located in line with the washer 613 and is closed in a sealed manner by this washer while the end 628 b closes the passage p.

Au début de l'enfoncement de la tige de valve 614, comme illustré sur la figure 6, l'orifice 619 communique avec la chambre C ce qui permet une purge, avant que l'extrémité 628b ne découvre le décrochement 45.At the start of the insertion of the valve stem 614, as illustrated in FIG. 6, the orifice 619 communicates with the chamber C which allows a purge, before the end 628 b discovers the recess 45.

Lorsque l'enfoncement de la tige 614 est poursuivi, comme illustré sur la figure 7, le décrochement 45 est découvert par l'extrémité 628b et une communication est établie, par ce décrochement 45 et l'espace annulaire limité entre la paroi du passage p et la paroi de la zone 628a, entre la chambre C et la poche flexible 602. Le produit de la poche 602 est alors distribué.When the insertion of the rod 614 is continued, as illustrated in FIG. 7, the recess 45 is discovered by the end 628 b and a communication is established, by this recess 45 and the annular space limited between the wall of the passage p and the wall of the zone 628 a , between the chamber C and the flexible bag 602. The product from the bag 602 is then dispensed.

Comme on le voit, cette disposition permet une purge de la chambre C avant et après chaque distribution d'une dose d'un mélange liquide/gaz.As can be seen, this arrangement allows purging of the chamber C before and after each distribution of a dose of a liquid / gas mixture.

Claims (13)

Valve à enfoncement pour la distribution sous forme pulvérisée d'un liquide contenu dans une poche flexible (2, 202-602) elle-même disposée à l'intérieur d'un récipient sous pression de gaz, agencée de façon à fonctionner quelle que soit la position du récipient, comportant un corps de valve (9, 209-609) destiné à être fixé dans une coupelle avec interposition d'une rondelle d'étanchéité (13, 213-613) entre une extrémité frontale ouverte du corps de valve et la coupelle, une tige de commande (14, 214-614) apte à coulisser dans le corps de valve entre une position de repos et une position d'ouverture, le corps de valve formant une chambre (C) qui est isolée de l'extérieur lorsque la tige est au repos et coopère avec la rondelle d'étanchéité de manière à fermer ladite chambre, la tige étant maintenue dans cette position de repos par des moyens élastiques de rappel, un orifice de prise de gaz additionnel (31, 231-631) prévu dans la paroi latérale du corps de valve, le corps étant muni, à sa partie inférieure, d'un moyen (23, 223-623) de fixation de la poche flexible contenant le liquide, des moyens de soupape (p, 28; p, 221 ; p, 528, 628) aptes à mettre en communication la poche flexible avec la chambre (C) lorsque la tige (14, 214-614) est enfoncée, et à isoler ladite poche (2, 202-602) de ladite chambre (C) lorsque la valve est à l'état de repos, ces moyens de soupape étant commandés par le déplacement de la tige, et étant aptes à n'établir ladite communication entre la poche (2, 202-602) et la chambre (C) qu'après une course d'une distance déterminée (D) de la tige de commande (14, 214-614), de sorte qu'avant et après chaque distribution d'une dose d'un mélange liquide/gaz la chambre (C) est purgée par un souffle de gaz uniquement.Push-in valve for dispensing in the sprayed form a liquid contained in a flexible bag (2, 202-602) itself arranged inside a container under gas pressure, arranged so as to function whatever the position of the container, comprising a valve body (9, 209-609) intended to be fixed in a cup with the interposition of a sealing washer (13, 213-613) between an open front end of the valve body and the cup, a control rod (14, 214-614) capable of sliding in the valve body between a rest position and an open position, the valve body forming a chamber (C) which is isolated from the outside when the rod is at rest and cooperates with the sealing washer so as to close said chamber, the rod being held in this rest position by elastic return means, an additional gas intake orifice (31, 231- 631) provided in the side wall of the body valve, the body being provided, at its lower part, with a means (23, 223-623) for fixing the flexible bag containing the liquid, valve means (p, 28; p, 221; p, 528, 628) able to put the flexible bag into communication with the chamber (C) when the rod (14, 214-614) is pressed, and to isolate said pocket (2, 202-602) from said chamber (C ) when the valve is in the rest state, these valve means being controlled by the displacement of the rod, and being able to establish said communication between the pocket (2, 202-602) and the chamber (C) only after a stroke of a determined distance (D) from the control rod (14, 214-614), so that before and after each distribution of a dose of a liquid / gas mixture the chamber (C ) is purged by a breath of gas only. Valve selon la revendication 1, dans laquelle la tige de valve (14, 514, 614) fait saillie à travers une ouverture de la coupelle et est propre à coulisser de manière étanche dans la rondelle d'étanchéité (13, 513, 613), cette tige comportant un alésage borgne (18, 518, 618) s'ouvrant à son extrémité éloignée du corps de valve, tandis qu'un orifice transversal (19, 519, 619) est prévu dans la paroi de la tige pour déboucher dans l'alésage borgne et, à l'extérieur, au niveau de la rondelle d'étanchéité (13, 513, 613) lorsque la tige est en position de repos, ledit orifice transversal (19, 519, 619) étant alors fermé par cette rondelle d'étanchéité (13, 513, 613), caractérisée par le fait que l'extrémité (24, 524, 624) de la tige située dans le corps de valve (9, 509, 609) est munie d'un prolongement (28, 528, 628) propre à coopérer avec un passage (p) entre la chambre (C) du corps de valve et la poche flexible (2, 502, 602) de telle manière qu'en position de repos de la tige de valve, le passage (p) est fermé par le prolongement, tandis que lorsque la tige de valve est enfoncée, une communication est établie entre la chambre (C) du corps de valve et la poche flexible (2, 502, 602).Valve according to claim 1, in which the valve stem (14, 514, 614) projects through an opening in the cup and is able to slide in leaktight manner in the sealing washer (13, 513, 613), this rod comprising a blind bore (18, 518, 618) opening at its end remote from the valve body, while a transverse orifice (19, 519, 619) is provided in the wall of the rod to open into the blind hole and, outside, at the sealing washer (13, 513, 613) when the rod is in the rest position, said transverse orifice (19, 519, 619) then being closed by this sealing washer (13, 513, 613), characterized in that the end (24, 524, 624) of the rod located in the valve body (9, 509, 609) is provided with an extension ( 28, 528, 628) suitable for cooperating with a passage (p) between the chamber (C) of the valve body and the flexible bag (2, 502, 602) in such a way that in the rest position of the valve stem , the passage (p) is closed by the extension, while when the valve stem is pressed, a communication is established between the chamber (C) of the valve body and the flexible pocket (2, 502, 602). Valve selon la revendication 2, caractérisée par le fait que le prolongement est constitué par un pion (28), tandis qu'une deuxième rondelle d'étanchéité (21) est prévue dans le fond du corps de valve (9), le susdit passage (p) étant constitué par l'ouverture centrale de la rondelle (21) traversée de manière étanche par le pion (28), lequel comporte un canal longitudinal (29) qui communique, à son extrémité inférieure, avec un canal transversal (30) débouchant sur la surface extérieure du pion et, à son autre extrémité, avec un passage (26) prévu dans la tige de valve (14) et débouchant dans la chambre (C) du corps de valve, la sortie du canal transversal inférieur (30) se trouvant au droit de la deuxième rondelle d'étanchéité (21) et étant fermée par cette rondelle lorsque la tige (14) est en position de repos, le pion (28) et la rondelle d'étanchéité (21) constituant lesdits moyens de soupape.Valve according to claim 2, characterized in that the extension consists of a pin (28), while a second sealing washer (21) is provided in the bottom of the valve body (9), the above-mentioned passage (p) being constituted by the central opening of the washer (21) leaktightly crossed by the pin (28), which comprises a longitudinal channel (29) which communicates, at its lower end, with a transverse channel (30) opening on the outside surface of the pin and, at its other end, with a passage (26) provided in the valve stem (14) and opening in the chamber (C) of the valve body, the outlet of the lower transverse channel (30 ) located in line with the second sealing washer (21) and being closed by this washer when the rod (14) is in the rest position, the pin (28) and the sealing washer (21) constituting said means valve. Valve selon la revendication 3, caractérisée par le fait que l'épaisseur de la deuxième rondelle d'étanchéité (21) est choisie de manière telle que lors de l'enfoncement de la tige (14) en vue de l'ouverture, l'orifice (19) situé vers l'extrémité inférieure du canal borgne (18) de la tige (14) entre en communication avec la chambre (C) du corps de valve avant que le canal transversal (30) situé en partie inférieure du pion (28) n'entre en communication avec un ajutage (23) et la poche flexible (2), ce qui permet d'effectuer une purge de la chambre (C) du corps de valve dans une position intermédiaire d'enfoncement de la tige de valve (14).Valve according to claim 3, characterized in that the thickness of the second sealing washer (21) is chosen such that when the rod (14) is pushed in for opening, the orifice (19) located towards the lower end of the blind channel (18) of the rod (14) communicates with the chamber (C) of the valve body before the transverse channel (30) located in the lower part of the pin ( 28) does not enter into communication with a nozzle (23) and the flexible bag (2), which makes it possible to purge the chamber (C) of the valve body in an intermediate position of insertion of the rod of valve (14). Valve selon la revendication 3 ou 4, caractérisée par le fait que le pion (28) est emmanché dans un évidement (27) prévu à l'extrémité (25) de la tige (14) située dans le corps de valve.Valve according to claim 3 or 4, characterized in that the pin (28) is fitted into a recess (27) provided at the end (25) of the rod (14) located in the valve body. Valve selon la revendication 2, caractérisée par le fait que le passage (p) pour la communication entre la chambre (C) du corps de valve et la poche flexible (502, 602) est prévu dans le corps de valve (509, 609), tandis que le prolongement (528, 628) de la tige de valve comporte une zone intermédiaire (528a, 628a) de diamètre inférieur à celui du passage et une zone d'extrémité (528b, 628b) de diamètre suffisant pour fermer le passage (514, 614), l'ensemble étant tel que lorsque la tige de valve est enfoncée, la zone intermédiaire (528a, 628a) se trouve au niveau du passage (p) et établit une communication entre la poche flexible (502, 602) et la chambre (C) de la valve, tandis que lorsque la tige de valve (514, 614) est en position de repos, la zone d'extrémité (528b, 628b) se trouve au niveau du passage (p) et coupe toute communication.Valve according to claim 2, characterized in that the passage (p) for communication between the chamber (C) of the valve body and the flexible bag (502, 602) is provided in the valve body (509, 609) , while the extension (528, 628) of the valve stem comprises an intermediate zone (528 a , 628 a ) of diameter smaller than that of the passage and an end zone (528 b , 628 b ) of sufficient diameter to close the passage (514, 614), the assembly being such that when the valve stem is depressed, the intermediate zone (528 a , 628 a ) is at the level of the passage (p) and establishes communication between the flexible bag (502, 602) and the valve chamber (C), while when the valve stem (514, 614) is in the rest position, the end zone (528 b , 628 b ) is at the level of the passage (p) and cut off all communication. Valve selon la revendication 6, caractérisée par le fait que le prolongement (528) est constitué par un élément cylindrique coaxial fixé en bout de la tige de valve (514) et dont l'extrémité tournée vers la poche flexible (502) est munie d'un surmoulage (38) en matière élastomère constituant la susdite zone d'extrémité (528b).Valve according to claim 6, characterized in that the extension (528) is constituted by a coaxial cylindrical element fixed at the end of the valve stem (514) and the end of which facing the flexible pocket (502) is provided with 'an overmolding (38) of elastomeric material constituting the aforesaid end zone (528 b ). Valve selon la revendication 6, caractérisée par le fait que le prolongement (628) et la tige de valve (614) forment une seule pièce.Valve according to claim 6, characterized in that the extension (628) and the valve stem (614) form a single piece. Valve selon la revendication 8, caractérisée par le fait que la zone d'extrémité (628b)du prolongement a une forme en cloche, à paroi (44) relativement mince et souple, dont la concavité (43) est tournée vers la poche flexible (602).Valve according to Claim 8, characterized in that the end zone (628 b ) of the extension has a bell-shaped, relatively thin and flexible wall (44), the concavity (43) of which faces the flexible pocket (602). Valve selon la revendication 1, caractérisée par le fait que les moyens de soupape de la valve comprennent un clapet (232) empêchant toute communication au repos entre la poche (2) et la chambre (C) du corps de valve (209), l'ouverture de ce clapet étant commandée par la tige de valve (214) lorsqu'elle est enfoncée.Valve according to claim 1, characterized in that the valve means of the valve comprise a valve (232) preventing any communication at rest between the pocket (2) and the chamber (C) of the valve body (209), l opening of this valve being controlled by the valve stem (214) when it is pressed. Valve selon la revendication 10, caractérisée par le fait que le clapet (232) est indépendant de la tige de valve (214) et repose contre un siège formé par une deuxième rondelle d'étanchéité (221) sous l'action d'un ressort de rappel (234), le siège étant muni d'un passage central (p), et le clapet (232) étant situé du côté du siège opposé à la tige de valve (214), cette dernière comportant un doigt de prolongement (236) propre à traverser le passage (p) central et à écarter le clapet (232) de son siège, lorsque la tige de valve est enfoncée.Valve according to claim 10, characterized in that the valve (232) is independent of the valve stem (214) and rests against a seat formed by a second sealing washer (221) under the action of a spring return (234), the seat being provided with a central passage (p), and the valve (232) being situated on the side of the seat opposite to the valve stem (214), the latter comprising an extension finger (236) adapted to pass through the central passage (p) and to separate the valve (232) from its seat when the valve stem is pressed. Valve selon la revendication 11, caractérisée par le fait que la course (D) de la tige (214) nécessaire à l'ouverture du clapet (232) est supérieure à celle (d) nécessaire pour mettre en communication l'orifice (219) de l'alésage borgne (218) de la tige de valve (214) avec la chambre (C) située à l'intérieur du corps de valve (209).Valve according to claim 11, characterized in that the stroke (D) of the rod (214) necessary for the opening of the valve (232) is greater than that ( d ) necessary to bring the orifice (219) into communication the blind bore (218) of the valve stem (214) with the chamber (C) located inside the valve body (209). Récipient contenant une poche flexible (2, 202-602) dans laquelle se trouve du liquide à pulvériser, maintenue sous pression de gaz contenu dans le récipient, caractérisé par le fait qu'il comporte une valve de distribution selon l'une des revendications précédentes.Container containing a flexible bag (2, 202-602) in which there is liquid to be sprayed, maintained under gas pressure contained in the container, characterized in that it comprises a dispensing valve according to one of the preceding claims .
EP94402751A 1993-12-09 1994-12-01 Depressible valve for vaporising a liquid and pressurised container provided with such a valve Expired - Lifetime EP0658490B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9314777A FR2713608B1 (en) 1993-12-09 1993-12-09 Valve for dispensing a sprayed liquid, and pressurized container equipped with such a valve.
FR9314777 1993-12-09

Publications (2)

Publication Number Publication Date
EP0658490A1 true EP0658490A1 (en) 1995-06-21
EP0658490B1 EP0658490B1 (en) 1997-01-08

Family

ID=9453741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402751A Expired - Lifetime EP0658490B1 (en) 1993-12-09 1994-12-01 Depressible valve for vaporising a liquid and pressurised container provided with such a valve

Country Status (5)

Country Link
US (1) US5579955A (en)
EP (1) EP0658490B1 (en)
DE (1) DE69401422T2 (en)
ES (1) ES2096427T3 (en)
FR (1) FR2713608B1 (en)

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CN104507819A (en) * 2012-02-29 2015-04-08 塞维利亚大学 Dispensing device and methods for emitting atomized spray

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Publication number Priority date Publication date Assignee Title
FR2785594B1 (en) 1998-11-10 2001-06-01 Oreal VALVE, RECHARGE EQUIPPED WITH SUCH A VALVE, AND DISTRIBUTION ASSEMBLY EQUIPPED WITH SUCH A VALVE
FR2824539B1 (en) * 2001-05-09 2003-12-19 Oreal DEVICE FOR THE SEPARATE PACKAGING OF TWO PRODUCTS, AND THEIR DISPENSING UNDER PRESSURE, SEPARATELY OR MIXED
GB0130057D0 (en) * 2001-12-14 2002-02-06 Dunne Stephen T Liquid atomising system
US20040084479A1 (en) * 2002-11-04 2004-05-06 Domoy Brett C. Valve
FR2881402A1 (en) * 2005-02-02 2006-08-04 Guy Robin Male pocket valve for dispensing e.g. aqueous painting, has pipe fitted to body of valve so that pipe forms sealing with its support to avoid escape of gas during spraying of products, where pipe is removed and replaced by larger pipe
FR2881403A1 (en) * 2005-02-02 2006-08-04 Annie Robin Female pocket valve for e.g. aqueous painting, has immersion pipe fitted to body of valve so that pipe forms sealing with its support to avoid gas to be escaped during spraying of products, where pipe is removed and replaced by larger pipe
NL1034974C2 (en) * 2008-01-30 2009-11-11 Dispensing Technologies Bv Method and device for dispensing a product from a container as a mist or foam.
US8800824B2 (en) 2012-02-29 2014-08-12 Alfonso M. Gañan-Calvo Sequential delivery valve apparatus and methods
IT201900015830A1 (en) * 2019-09-06 2021-03-06 Coster Tecnologie Speciali Spa Device for dispensing a fluid substance

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GB1174119A (en) * 1966-02-10 1969-12-10 Revlon Dispensing Valve Mechanism on Aerosol Dispensing-type Containers
DE1812718A1 (en) * 1967-12-22 1969-09-11 Aerosol Inv S And Dev S A Distribution device with mixing valve
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EP0137897A1 (en) * 1983-08-16 1985-04-24 Sterwin Ag. Two-component package

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Publication number Priority date Publication date Assignee Title
CN104507819A (en) * 2012-02-29 2015-04-08 塞维利亚大学 Dispensing device and methods for emitting atomized spray
EP2819928A4 (en) * 2012-02-29 2015-09-30 Univ Sevilla Dispensing device and methods for emitting atomized spray

Also Published As

Publication number Publication date
FR2713608A1 (en) 1995-06-16
ES2096427T3 (en) 1997-03-01
DE69401422T2 (en) 1997-08-21
EP0658490B1 (en) 1997-01-08
DE69401422D1 (en) 1997-02-20
US5579955A (en) 1996-12-03
FR2713608B1 (en) 1996-02-02

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