EP1216104B1 - Improved pump for dispensing fluid product,and fluid product dispensing device comprising same - Google Patents

Improved pump for dispensing fluid product,and fluid product dispensing device comprising same Download PDF

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Publication number
EP1216104B1
EP1216104B1 EP20000960826 EP00960826A EP1216104B1 EP 1216104 B1 EP1216104 B1 EP 1216104B1 EP 20000960826 EP20000960826 EP 20000960826 EP 00960826 A EP00960826 A EP 00960826A EP 1216104 B1 EP1216104 B1 EP 1216104B1
Authority
EP
European Patent Office
Prior art keywords
pump
pump body
ferrule
top edge
passageway
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20000960826
Other languages
German (de)
French (fr)
Other versions
EP1216104A1 (en
Inventor
Ludovic Petit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar France SAS
Original Assignee
Valois SAS
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Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP1216104A1 publication Critical patent/EP1216104A1/en
Application granted granted Critical
Publication of EP1216104B1 publication Critical patent/EP1216104B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00442—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being actuated by the difference between the atmospheric pressure and the pressure inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve

Definitions

  • the present invention relates to a pump for improved fluid product distribution and a device fluid dispensing system comprising such pump. More particularly, the present invention relates to a fluid dispensing pump incorporating filtration and / or treatment means of venting air.
  • the first one solution is to use an airless system, it's up to say without air intake, with in this case a reservoir of product that decreases in volume at each distribution for compensate for the depression created by the expulsion of a quantity of product determined. This can be done by example using a flexible pouch emptying gradually or a follower piston disposed in the tank.
  • the second solution is to treat, filter the incoming air, after each product distribution. To do this, we use advantageously filter elements arranged in the venting air passage from the pump or device distribution.
  • document EP-0 189 549 discloses arrange a filter against the vertical side wall of the pump body incorporating a vent hole.
  • EP-0 800 869 discloses having a filter on the edge top of the container neck.
  • WO 97/18902 discloses to dispose a filter inside the body of pump between the piston and said pump body.
  • the document EP-0 487 412 discloses disposing a filter on a shoulder formed inside the pump body.
  • the present invention aims to provide a pump of fluid dispensing and a device for fluid dispensing comprising such a pump which do not reproduce the aforementioned drawbacks.
  • the present invention aims to provide such a fluid dispenser pump and such fluid dispenser device comprising such a pump that can filter and / or treat vent air in a simple and reliable way, without having to modify any constituent part of the pump or fluid dispenser device.
  • the present invention also aims to provide such a fluid dispenser pump and a fluid dispenser device incorporating such a pump, for which the implementation of the system vent air filtration is simplified and less expensive, especially at the level of its industrialization.
  • the subject of the present invention is therefore a pump of fluid dispensing comprising a body of pump, a piston sliding in a sealed manner in said pump body between a rest position and a position of distribution, and a fixing ring for assembling said pump on a tank, the upper edge of the pump body being fixed in said fixing ring, a seal ring being disposed between said pump body and said fixing ring, said pump further comprising a vent air passage between the reservoir and atmosphere, characterized in that an element of filtering and / or venting air treatment is provided in said vent air passage, said element filter being disposed between said upper edge of the pump body and said fixing ring.
  • said vent air passage is open in all pump positions.
  • said annular seal forms the element filtration, said seal being permeable to air and fluid-tight fluid dispensed by said pump.
  • the pump comprises a ferrule mounted on the upper edge of the pump body between said upper edge on the one hand, and said seal ring on the other hand, said ferrule extending to inside said pump body to cooperate with said piston in the rest position, the filter element being disposed between the upper edge of the pump body and said ferrule.
  • the upper edge of the pump body has a through bore defining a portion of the venting air passage, said filter element being disposed between said upper edge of the pump body and said ferrule, completely covering said bore crossing.
  • said filter element comprises means of passage to define a part of passage of air between the ferrule and the annular seal.
  • said venting air passage is defined between the ferrule and said pump body so that the ferrule closes said air passage in the rest position of the pump, said air passage being open when said piston is moves to its dispensing position.
  • said ferrule comprises a flange radial cooperating with the upper edge of the body of pump, said flange incorporating an opening and / or means of passage, such as groove (s) and / or rib (s) to define an air passage portion venting.
  • said upper edge of the body of pump comprises means of passage, such as groove (s) and / or rib (s), to define a part of Ventilation air passage.
  • said filter element is disposed on the end wall of said upper edge of the pump body, between said passage means of said flange and said passage means of said pump body.
  • the pump has a ferrule mounted on the upper edge of the body between said upper edge on the one hand, and said ring seal on the other hand, said ferrule extending to inside said pump body to cooperate with said piston in the rest position of said piston, the element filter being disposed between said ferrule and said fixing ring.
  • the pump body incorporates a hole vent forming part of the vent passage defined between the ferrule and the pump body.
  • the present invention also relates to a fluid dispenser device comprising such a dispensing pump as defined above.
  • the dispensing pump of fluid product comprises a pump body 10 in which tightly slides a piston 20, advantageously connected to an actuating rod 21.
  • the pump body 10 is usually assembled on the neck of a tank 1 to using a fixing ring 5, which can be any other, in particular snap-in, screwable, or crimp.
  • the seal between the pump and the ring fixing 5 is carried out by means of an annular seal 100, 200 and the seal between the fixing ring 5 and the tank 1 is made by means of a collar 300.
  • a pump chamber 30 is defined between an inlet valve 40, 41 and a check valve outlet 50, 51, so that the pump shown on the figures is a pre-compression pump.
  • a dispensing head no shown
  • the actuating rod 21 moves the piston 20 in a sealed manner in the pump body 10.
  • This displacement causes the closure of the inlet flap 40 so the product volume is defined inside the pump chamber 30.
  • the outlet valve 50 opens by the pressure created at inside the pump chamber 30, so that said product dose is expelled through the canal of expulsion 6.
  • the pump according to the invention comprises a vent air passage 80 connecting the interior of the tank to the atmosphere.
  • this passage vent air 80 is open in all positions pump. It extends advantageously between the edge upper 11 of the pump body 10 and the fixing ring 5.
  • the annular seal 100 forms a filter element and / or treatment of venting air. It is in this case tight to the product fluid contained in the reservoir, but permeable to air, by having a filtering action on the incoming air. This saves a coin, namely the filter, which simplifies manufacturing and assembly and reduces costs.
  • the filtration element 100 is separate from the seal 200 and is disposed between the edge upper 11 of the pump body 10 and a ferrule 60.
  • This ferrule 60 is itself disposed between the upper edge 11 of the pump body 10 and the fixing ring 5, with interposition of the seal 200.
  • the ferrule 60 extends inside the pump body 10 to cooperate with the piston 20 and define its rest position.
  • the ferrule 60 comprises a radial flange 61 which rests on the end wall of the upper edge 11 of the pump body, with interposition of the element of filtration.
  • the air passage 80 can be defined by a through bore 70 made in the edge upper 11 of the pump body 10.
  • the filter element 100 is then preferably disposed between said edge upper 11 of the pump body 10 and said ferrule 60, in completely covering said bore 70.
  • said filter element 100 may comprise means of passage to define a part of air passage between the ferrule 60 and the annular seal 200 producing the seal between the pump and the fixing ring.
  • the ferrule 60 which can incorporate means of passage to define a part of passage air.
  • these means of passage can have an opening 63 provided in the radial flange 61 of the ferrule 60.
  • ribs and / or grooves 62 may be provided in the radial flange, on its side in contact with the seal 200.
  • the vent air passage 80 is not open in all positions of the pump.
  • said ferrule defines not only the position of rest of the piston forming a stop for the axial displacement said piston 20, but said ferrule 60 also cooperates sealingly with said piston to seal said Ventilation air passage 80.
  • This air passage venting first passes between the actuating rod 21 and the upper end of ferrule 60. It goes down the along the inner wall of ferrule 60 to the lower end of it, where it is closed by the piston 20 in the rest position.
  • venting air passage 80 is open at this location and it extends between the pump body 10 and the outside of ferrule 60 to level of the upper edge 11 of the pump body 10. Next, it passes between the outside of the pump body 10 and the fixing ring 5 and penetrates inside the tank (not shown in Figure 1).
  • the filter element and / or Ventilation air treatment 100 is also arranged between the upper edge 11 of the pump body 10 and the said ferrule 60.
  • the arrows show schematically the flow of vent air at this in law.
  • this filter element 100 is permeable to air but impervious to the product contained in the tank and / or pump.
  • the radial flange 61 of the ferrule 60 comprises preferably passage means 62 such as one or several groove (s) and / or rib (s) to define a Ventilation air passage.
  • the edge upper 11 of the pump body 10 may also comprise means of passage 12, such as one or more groove (s) and / or rib (s), to define a passage air.
  • the filter element 100 is interposed between said passage means 12 of the pump body 10 and said means 62 for passing ferrule 60.
  • the filter element 100 which can be realized in the form of a radial annular element, is very easily achievable and simple to assemble, without require significant modification of any constituent part of the pump.
  • the filter ring 100 is simply resting on the upper edge 11 of the body before the ferrule 60 is put in place.
  • means of passage 62, 12 or 102, respectively in the ferrule 60, the pump body 10 or the filter element 100 are very simple and inexpensive to perform, and it is clear that any suitable means of passage are possible without departing from the scope of this invention.
  • FIGS. 6 to 9 show different variants of embodiment in which the venting passage 80 extends first between the ferrule 60 and the fixing ring 5 and then between the ferrule 60 and the pump body 10.
  • pump body 10 then has a vent hole 85 opening into the tank.
  • This implementation allows to make the neck seal 300 completely waterproof on the pump body 10, and thus to prevent any risk of product contact with the vent passage 80, the vent hole 85 being closed by the piston 20 in position resting the pump.
  • the collar 300 may comprise a valve 310, visible in FIG. 9, to isolate the vent hole 85.
  • the ferrule 60 cooperates in a sealed manner with the actuating rod 21, for example by means of a sealing lip 65 provided on the inner surface of the ferrule 60.
  • the seal 100 forms the filter in a manner similar to the Figure 5. It is in these variants disposed between the radial flange 61 of the ferrule 60 and the fixing ring 5.
  • the filter 100 is disposed on the seal 200, these two elements being provided between the radial flange 61 of the collar 60 and the ring of 5.
  • the filter 100 is arranged between the seal 200 and the fixing ring.
  • the filter element can be made in one any suitable material suitable for filtering and / or treat venting air penetrating inside the tank and intended to come into contact with the product.

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  • Details Of Reciprocating Pumps (AREA)
  • Compressor (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)
  • Devices For Dispensing Beverages (AREA)

Abstract

The invention concerns a fluid product dispensing pump comprising a pump body (10), a piston (20) sealingly sliding in said pump body (10) between a neutral position and a dispensing position, the upper edge (11) of the pump body (10) being fixed in a fixing ring (5) for assembling said pump on a tank (1), an annular sealing joint (100, 200) being arranged between said pump body (10) and said fixing ring (5), said pump further comprising a ventilating air passage (80) between the tank and the ambient atmosphere. The invention is characterised in that an element filtering and/or treating the ventilating air (100) is provided in said ventilating air passage (80), said filtering element (100) being arranged between said upper edge (11) of the pump body and said fixing ring (5).

Description

La présente invention concerne une pompe de distribution de produit fluide améliorée et un dispositif de distribution de produit fluide comportant une telle pompe. Plus particulièrement, la présente invention concerne une pompe de distribution de produit fluide incorporant des moyens de filtration et/ou de traitement de l'air d'éventation.The present invention relates to a pump for improved fluid product distribution and a device fluid dispensing system comprising such pump. More particularly, the present invention relates to a fluid dispensing pump incorporating filtration and / or treatment means of venting air.

Dans de nombreuses applications, notamment pharmaceutiques, il est souhaitable d'éviter d'incorporer des conservateurs dans le produit fluide à distribuer. Pour ce faire, deux solutions sont possibles. La première solution consiste à utiliser un système airless, c'est à dire sans reprise d'air, avec dans ce cas un réservoir de produit qui diminue de volume à chaque distribution pour compenser la dépression créée par l'expulsion d'une quantité de produit déterminé. Ceci peut être réalisé par exemple à l'aide d'une poche souple se vidant progressivement ou d'un piston suiveur disposé dans le réservoir. La seconde solution est de traiter, respectivement de filtrer l'air entrant, après chaque distribution de produit. Pour ce faire, on utilise avantageusement des éléments de filtration disposés dans le passage d'air d'éventation de la pompe ou du dispositif de distribution. Ainsi, le document EP-0 189 549 divulgue de disposer un filtre contre la paroi latérale verticale du corps de pompe incorporant un trou d'évent. Le document EP-0 800 869 divulgue de disposer un filtre sur le bord supérieur du col du récipient. Le document WO 97/18902 divulgue de disposer un filtre à l'intérieur du corps de pompe entre le piston et ledit corps de pompe. Le document EP-0 487 412 divulgue de disposer un filtre sur un épaulement réalisé à l'intérieur du corps de pompe.In many applications, including pharmaceutical products, it is desirable to avoid incorporating preservatives in the fluid product to be dispensed. For to do this, two solutions are possible. The first one solution is to use an airless system, it's up to say without air intake, with in this case a reservoir of product that decreases in volume at each distribution for compensate for the depression created by the expulsion of a quantity of product determined. This can be done by example using a flexible pouch emptying gradually or a follower piston disposed in the tank. The second solution is to treat, filter the incoming air, after each product distribution. To do this, we use advantageously filter elements arranged in the venting air passage from the pump or device distribution. Thus, document EP-0 189 549 discloses arrange a filter against the vertical side wall of the pump body incorporating a vent hole. EP-0 800 869 discloses having a filter on the edge top of the container neck. WO 97/18902 discloses to dispose a filter inside the body of pump between the piston and said pump body. The document EP-0 487 412 discloses disposing a filter on a shoulder formed inside the pump body.

Les systèmes décrits ci-dessus présentent l'inconvénient majeur d'une mise en oeuvre compliquée. Il faut modifier au moins une pièce constitutive de la pompe ou du dispositif de distribution incorporant ladite pompe, et l'assemblage est ainsi rendu plus complexe. Ceci augmente donc le coût de fabrication et d'assemblage.The systems described above the major disadvantage of a complicated implementation. he must modify at least one constituent part of the pump or the dispensing device incorporating said pump, and the assembly is thus made more complex. This therefore increases the cost of manufacturing and assembly.

La présente invention a pour but de fournir une pompe de distribution de produit fluide et un dispositif de distribution de produit fluide comportant une telle pompe qui ne reproduisent pas les inconvénients précités.The present invention aims to provide a pump of fluid dispensing and a device for fluid dispensing comprising such a pump which do not reproduce the aforementioned drawbacks.

La présente invention a pour but de fournir une telle pompe de distribution de produit fluide et un tel dispositif de distribution de produit fluide comportant une telle pompe qui permettent de filtrer et/ou de traiter l'air d'éventation de manière simple et fiable, sans avoir à modifier aucune pièce constitutive de la pompe ou du dispositif de distribution de produit fluide.The present invention aims to provide such a fluid dispenser pump and such fluid dispenser device comprising such a pump that can filter and / or treat vent air in a simple and reliable way, without having to modify any constituent part of the pump or fluid dispenser device.

La présente invention a également pour but de fournir une telle pompe de distribution de produit fluide et un dispositif de distribution de produit fluide incorporant une telle pompe, pour lesquels la mise en oeuvre du système de filtration d'air d'éventation est simplifiée et moins coûteuse, en particulier au niveau de son industrialisation.The present invention also aims to provide such a fluid dispenser pump and a fluid dispenser device incorporating such a pump, for which the implementation of the system vent air filtration is simplified and less expensive, especially at the level of its industrialization.

La présente invention a donc pour objet une pompe de distribution de produit fluide comportant un corps de pompe, un piston coulissant de manière étanche dans ledit corps de pompe entre une position de repos et une position de distribution, et une bague de fixation destinée à assembler ladite pompe sur un réservoir, le bord supérieur du corps de pompe étant fixé dans ladite bague de fixation, un joint d'étanchéité annulaire étant disposé entre ledit corps de pompe et ladite bague de fixation, ladite pompe comportant en outre un passage d'air d'éventation entre le réservoir et l'atmosphère, caractérisée en ce qu'un élément de filtration et/ou de traitement d'air d'éventation est prévu dans ledit passage d'air d'éventation, ledit élément de filtration étant disposé entre ledit bord supérieur du corps de pompe et ladite bague de fixation.The subject of the present invention is therefore a pump of fluid dispensing comprising a body of pump, a piston sliding in a sealed manner in said pump body between a rest position and a position of distribution, and a fixing ring for assembling said pump on a tank, the upper edge of the pump body being fixed in said fixing ring, a seal ring being disposed between said pump body and said fixing ring, said pump further comprising a vent air passage between the reservoir and atmosphere, characterized in that an element of filtering and / or venting air treatment is provided in said vent air passage, said element filter being disposed between said upper edge of the pump body and said fixing ring.

Selon une première variante de réalisation, ledit passage d'air d'éventation est ouvert dans toutes les positions de la pompe.According to a first variant embodiment, said vent air passage is open in all pump positions.

De préférence, ledit joint annulaire forme l'élément de filtration, ledit joint étant perméable à l'air et étanche au produit fluide distribué par ladite pompe.Preferably, said annular seal forms the element filtration, said seal being permeable to air and fluid-tight fluid dispensed by said pump.

Selon un autre mode de réalisation, la pompe comporte une virole montée sur le bord supérieur du corps de pompe entre ledit bord supérieur d'une part, et ledit joint annulaire d'autre part, ladite virole s'étendant à l'intérieur dudit corps de pompe pour coopérer avec ledit piston dans la position de repos, l'élément de filtration étant disposé entre le bord supérieur du corps de pompe et ladite virole.According to another embodiment, the pump comprises a ferrule mounted on the upper edge of the pump body between said upper edge on the one hand, and said seal ring on the other hand, said ferrule extending to inside said pump body to cooperate with said piston in the rest position, the filter element being disposed between the upper edge of the pump body and said ferrule.

Avantageusement, le bord supérieur du corps de pompe comporte un alésage traversant définissant une partie du passage d'air d'éventation, ledit élément de filtration étant disposé entre ledit bord supérieur du corps de pompe et ladite virole, en recouvrant complètement ledit alésage traversant.Advantageously, the upper edge of the pump body has a through bore defining a portion of the venting air passage, said filter element being disposed between said upper edge of the pump body and said ferrule, completely covering said bore crossing.

Avantageusement, ledit élément de filtration comporte des moyens de passage pour définir une partie de passage d'air entre la virole et le joint annulaire.Advantageously, said filter element comprises means of passage to define a part of passage of air between the ferrule and the annular seal.

Selon une seconde variante de réalisation, ledit passage d'air d'éventation est défini entre la virole et ledit corps de pompe de telle sorte que la virole ferme ledit passage d'air en position de repos de la pompe, ledit passage d'air étant ouvert lorsque ledit piston se déplace vers sa position de distribution.According to a second variant embodiment, said venting air passage is defined between the ferrule and said pump body so that the ferrule closes said air passage in the rest position of the pump, said air passage being open when said piston is moves to its dispensing position.

Avantageusement, ladite virole comporte une bride radiale coopérant avec le bord supérieur du corps de pompe, ladite bride incorporant une ouverture et/ou des moyens de passage, tels que des rainure(s) et/ou nervure(s) pour définir une partie de passage d'air d'éventation.Advantageously, said ferrule comprises a flange radial cooperating with the upper edge of the body of pump, said flange incorporating an opening and / or means of passage, such as groove (s) and / or rib (s) to define an air passage portion venting.

Avantageusement, ledit bord supérieur du corps de pompe comporte des moyens de passage, tels que des rainure(s) et/ou nervure(s), pour définir une partie de passage d'air d'éventation.Advantageously, said upper edge of the body of pump comprises means of passage, such as groove (s) and / or rib (s), to define a part of Ventilation air passage.

Avantageusement, ledit élément de filtration est disposé sur la paroi d'extrémité dudit bord supérieur du corps de pompe, entre lesdits moyens de passage de ladite bride et lesdits moyens de passage dudit corps de pompe.Advantageously, said filter element is disposed on the end wall of said upper edge of the pump body, between said passage means of said flange and said passage means of said pump body.

Selon une variante de réalisation avantageuse la pompe comporte une virole montée sur le bord supérieur du corps de pompe entre ledit bord supérieur d'une part, et ledit joint annulaire d'autre part, ladite virole s'étendant à l'intérieur dudit corps de pompe pour coopérer avec ledit piston dans la position de repos dudit piston, l'élément de filtration étant disposé entre ladite virole et ladite bague de fixation.According to an advantageous embodiment of the pump has a ferrule mounted on the upper edge of the body between said upper edge on the one hand, and said ring seal on the other hand, said ferrule extending to inside said pump body to cooperate with said piston in the rest position of said piston, the element filter being disposed between said ferrule and said fixing ring.

Avantageusement, le corps de pompe incorpore un trou d'évent formant partie du passage d'éventation défini entre la virole et le corps de pompe.Advantageously, the pump body incorporates a hole vent forming part of the vent passage defined between the ferrule and the pump body.

La présente invention a également pour objet un dispositif de distribution de produit fluide comportant une telle pompe de distribution telle que définie ci-dessus.The present invention also relates to a fluid dispenser device comprising such a dispensing pump as defined above.

Les avantages et caractéristiques de la présente invention apparaítront plus clairement au cours de la description détaillée suivante de plusieurs modes de réalisation de l'invention, donnés à titre d'exemples non limitatifs en référence aux dessins joints sur lesquels :

  • la figure 1 est une vue schématique en section transversale d'une pompe de distribution de produit fluide selon une première variante de réalisation de la présente invention,
  • la figure 2 est une vue schématique agrandie d'un détail de la figure 1,
  • la figure 3 est une vue schématique similaire à la figure 1, montrant une seconde variante de réalisation de l'invention,
  • la figure 4 est une vue schématique agrandie d'un détail de la figure 3,
  • la figure 5 est une vue schématique en section transversale d'un dispositif de distribution comportant une pompe selon un mode de réalisation préféré de l'invention,
  • la figure 6 est une vue schématique similaire aux figures 1 et 3 d'une variante de réalisation de l'invention,
  • la figure 7 est une vue schématique agrandie d'un détail de la figure 6,
  • la figure 8 est une vue schématique d'une autre variante de réalisation de l'invention, et
  • la figure 9 est une vue schématique d'encore une autre variante de réalisation de l'invention.
The advantages and features of the present invention will appear more clearly in the following detailed description of several embodiments of the invention given by way of non-limiting example with reference to the accompanying drawings, in which:
  • FIG. 1 is a diagrammatic cross-sectional view of a fluid dispenser pump according to a first embodiment of the present invention,
  • FIG. 2 is an enlarged schematic view of a detail of FIG. 1,
  • FIG. 3 is a schematic view similar to FIG. 1, showing a second variant embodiment of the invention;
  • FIG. 4 is an enlarged schematic view of a detail of FIG. 3,
  • FIG. 5 is a schematic cross-sectional view of a dispensing device comprising a pump according to a preferred embodiment of the invention,
  • FIG. 6 is a schematic view similar to FIGS. 1 and 3 of an alternative embodiment of the invention,
  • FIG. 7 is an enlarged schematic view of a detail of FIG. 6,
  • FIG. 8 is a schematic view of another variant embodiment of the invention, and
  • Figure 9 is a schematic view of yet another alternative embodiment of the invention.

En référence aux figures, la pompe de distribution de produit fluide comporte un corps de pompe 10 dans lequel coulisse de manière étanche un piston 20, avantageusement relié à une tige d'actionnement 21. Le corps de pompe 10 est généralement assemblé sur le col d'un réservoir 1 à l'aide d'une bague de fixation 5, qui peut être quelconque, notamment encliquetable, vissable, ou à sertir. L'étanchéité entre la pompe et la bague de fixation 5 est réalisée au moyen d'un joint annulaire 100, 200 et l'étanchéité entre la bague de fixation 5 et le réservoir 1 est réalisée au moyen d'un joint de col 300.With reference to the figures, the dispensing pump of fluid product comprises a pump body 10 in which tightly slides a piston 20, advantageously connected to an actuating rod 21. The pump body 10 is usually assembled on the neck of a tank 1 to using a fixing ring 5, which can be any other, in particular snap-in, screwable, or crimp. The seal between the pump and the ring fixing 5 is carried out by means of an annular seal 100, 200 and the seal between the fixing ring 5 and the tank 1 is made by means of a collar 300.

Dans le corps de pompe 10, une chambre de pompe 30 est définie entre un clapet d'entrée 40, 41 et un clapet de sortie 50, 51, de sorte que la pompe représentée sur les figures est une pompe à pré- compression. Lorsque l'utilisateur actionne une tête de distribution (non représentée), celle-ci coopère avec la tige d'actionnement 21 pour déplacer le piston 20 de manière étanche dans le corps de pompe 10. Ce déplacement entraíne la fermeture du clapet d'entrée 40 de sorte que le volume de produit est défini à l'intérieur de la chambre de pompe 30. Ensuite, le clapet de sortie 50 s'ouvre par la pression créée à l'intérieur de la chambre de pompe 30, de sorte que ladite dose de produit est expulsée à travers le canal d'expulsion 6.In the pump body 10, a pump chamber 30 is defined between an inlet valve 40, 41 and a check valve outlet 50, 51, so that the pump shown on the figures is a pre-compression pump. When the user actuates a dispensing head (no shown), it cooperates with the actuating rod 21 to move the piston 20 in a sealed manner in the pump body 10. This displacement causes the closure of the inlet flap 40 so the product volume is defined inside the pump chamber 30. Then, the outlet valve 50 opens by the pressure created at inside the pump chamber 30, so that said product dose is expelled through the canal of expulsion 6.

Pour éviter la création d'une dépression à l'intérieur du réservoir, la pompe selon l'invention comporte un passage d'air d'éventation 80 reliant l'intérieur du réservoir à l'atmosphère. Selon une première variante de réalisation représentée sur les figures 3 à 5, ce passage d'air d'éventation 80 est ouvert dans toutes les positions de la pompe. Il s'étend avantageusement entre le bord supérieur 11 du corps de pompe 10 et la bague de fixation 5.To avoid the creation of a depression inside of the tank, the pump according to the invention comprises a vent air passage 80 connecting the interior of the tank to the atmosphere. According to a first variant of embodiment shown in Figures 3 to 5, this passage vent air 80 is open in all positions pump. It extends advantageously between the edge upper 11 of the pump body 10 and the fixing ring 5.

Dans un mode de réalisation préféré de l'invention, représenté sur les figures 5, 6, 7 et 9 le joint annulaire 100 forme un élément de filtration et/ou de traitement de l'air d'éventation. Il est dans ce cas étanche au produit fluide contenu dans le réservoir, mais perméable à l'air, en ayant une action filtrante sur l'air entrant. Ceci permet d'économiser une pièce, à savoir le filtre, ce qui simplifie la fabrication et l'assemblage et diminue les coûts.In a preferred embodiment of the invention, shown in Figures 5, 6, 7 and 9 the annular seal 100 forms a filter element and / or treatment of venting air. It is in this case tight to the product fluid contained in the reservoir, but permeable to air, by having a filtering action on the incoming air. This saves a coin, namely the filter, which simplifies manufacturing and assembly and reduces costs.

Dans un autre mode de réalisation avantageux, représenté sur les figures 3 et 4, l'élément de filtration 100 est distinct du joint 200 et est disposé entre le bord supérieur 11 du corps de pompe 10 et une virole 60. Cette virole 60 est elle-même disposée entre le bord supérieur 11 du corps de pompe 10 et la bague de fixation 5, avec interposition du joint d'étanchéité 200. La virole 60 s'étend à l'intérieur du corps de pompe 10 pour coopérer avec le piston 20 et définir sa position de repos. Avantageusement, la virole 60 comporte une bride radiale 61 qui repose sur la paroi d'extrémité du bord supérieur 11 du corps de pompe, avec interposition de l'élément de filtration.In another advantageous embodiment, shown in FIGS. 3 and 4, the filtration element 100 is separate from the seal 200 and is disposed between the edge upper 11 of the pump body 10 and a ferrule 60. This ferrule 60 is itself disposed between the upper edge 11 of the pump body 10 and the fixing ring 5, with interposition of the seal 200. The ferrule 60 extends inside the pump body 10 to cooperate with the piston 20 and define its rest position. Advantageously, the ferrule 60 comprises a radial flange 61 which rests on the end wall of the upper edge 11 of the pump body, with interposition of the element of filtration.

Avantageusement, le passage d'air 80 peut être défini par un alésage traversant 70 réalisé dans le bord supérieur 11 du corps de pompe 10. L'élément de filtration 100 est alors de préférence disposé entre ledit bord supérieur 11 du corps de pompe 10 et ladite virole 60, en recouvrant complètement ledit alésage 70. Eventuellement, ledit élément de filtration 100 peut comporter des moyens de passage pour définir une partie de passage d'air entre la virole 60 et le joint annulaire 200 réalisant l'étanchéité entre la pompe et la bague de fixation 5. En variante, c'est la virole 60 qui peut incorporer des moyens de passage pour définir une partie de passage d'air. Dans ce cas, ces moyens de passage peuvent comporter une ouverture 63 prévue dans la bride radiale 61 de la virole 60. De plus, des nervures et/ou rainures 62 peuvent être ménagées dans la bride radiale, sur son côté en contact avec le joint 200.Advantageously, the air passage 80 can be defined by a through bore 70 made in the edge upper 11 of the pump body 10. The filter element 100 is then preferably disposed between said edge upper 11 of the pump body 10 and said ferrule 60, in completely covering said bore 70. Optionally, said filter element 100 may comprise means of passage to define a part of air passage between the ferrule 60 and the annular seal 200 producing the seal between the pump and the fixing ring. Alternatively, it is the ferrule 60 which can incorporate means of passage to define a part of passage air. In this case, these means of passage can have an opening 63 provided in the radial flange 61 of the ferrule 60. In addition, ribs and / or grooves 62 may be provided in the radial flange, on its side in contact with the seal 200.

Selon une seconde variante de réalisation représentée sur les figures 1 et 2, le passage d'air d'éventation 80 n'est pas ouvert dans toutes les positions de la pompe. En position de repos de la pompe, représentée sur la figure 1, ladite virole définit non seulement la position de repos du piston en formant butée pour le déplacement axial dudit piston 20, mais ladite virole 60 coopère également de manière étanche avec ledit piston pour obturer ledit passage d'air d'éventation 80. Ce passage d'air d'éventation passe d'abord entre la tige d'actionnement 21 et l'extrémité supérieure de la virole 60. Il descend le long de la paroi interne de la virole 60 jusqu'à l'extrémité inférieure de celle-ci, où il est obturé par le piston 20 en position de repos. Lorsque le piston 20 se déplace vers sa position de distribution lors de l'actionnement de la pompe, le passage d'air d'éventation 80 est ouvert à cet endroit et il se prolonge entre le corps de pompe 10 et l'extérieur de la virole 60 jusqu'au niveau du bord supérieur 11 du corps de pompe 10. Ensuite, il passe entre l'extérieur du corps de pompe 10 et la bague de fixation 5 et pénètre à l'intérieur du réservoir (non représentés sur la figure 1).According to a second embodiment variant shown in Figures 1 and 2, the vent air passage 80 is not open in all positions of the pump. In rest position of the pump, shown in the figure 1, said ferrule defines not only the position of rest of the piston forming a stop for the axial displacement said piston 20, but said ferrule 60 also cooperates sealingly with said piston to seal said Ventilation air passage 80. This air passage venting first passes between the actuating rod 21 and the upper end of ferrule 60. It goes down the along the inner wall of ferrule 60 to the lower end of it, where it is closed by the piston 20 in the rest position. When the piston 20 is moves to its dispensing position when actuating the pump, venting air passage 80 is open at this location and it extends between the pump body 10 and the outside of ferrule 60 to level of the upper edge 11 of the pump body 10. Next, it passes between the outside of the pump body 10 and the fixing ring 5 and penetrates inside the tank (not shown in Figure 1).

Dans cette variante, l'élément de filtration et/ou de traitement de l'air d'éventation 100 est également disposé entre le bord supérieur 11 du corps de pompe 10 et ladite virole 60. Sur la figure 2, les flèches montrent schématiquement l'écoulement de l'air d'éventation à cet endroit. De préférence, cet élément de filtration 100 est perméable à l'air mais étanche au produit contenu dans le réservoir et/ou la pompe.In this variant, the filter element and / or Ventilation air treatment 100 is also arranged between the upper edge 11 of the pump body 10 and the said ferrule 60. In Figure 2, the arrows show schematically the flow of vent air at this in law. Preferably, this filter element 100 is permeable to air but impervious to the product contained in the tank and / or pump.

La bride radiale 61 de la virole 60 comporte de préférence des moyens de passage 62 tel qu'une ou plusieurs rainure(s) et/ou nervure(s) pour définir un passage d'air d'éventation. De manière similaire, le bord supérieur 11 du corps de pompe 10 peut également comporter des moyens de passage 12, tel qu'une ou plusieurs rainure(s) et/ou nervure(s), pour définir un passage d'air. Ainsi, dans l'exemple représenté sur la figure 2, l'élément de filtration 100 est interposé entre lesdits moyens de passage 12 du corps de pompe 10 et lesdits moyens de passage 62 de la virole 60.The radial flange 61 of the ferrule 60 comprises preferably passage means 62 such as one or several groove (s) and / or rib (s) to define a Ventilation air passage. Similarly, the edge upper 11 of the pump body 10 may also comprise means of passage 12, such as one or more groove (s) and / or rib (s), to define a passage air. Thus, in the example shown in FIG. the filter element 100 is interposed between said passage means 12 of the pump body 10 and said means 62 for passing ferrule 60.

L'élément de filtration 100, qui peut être réalisé sous la forme d'un élément annulaire radial, est très facilement réalisable et simple à assembler, sans nécessiter de modification importante d'une quelconque pièce constitutive de la pompe. Dans l'exemple particulier représenté sur les figures 1 à 4, l'anneau de filtration 100 est simplement posé sur le bord supérieur 11 du corps de pompe avant la mise en place de la virole 60. Les moyens de passage 62, 12 ou 102, respectivement dans la virole 60, le corps de pompe 10 ou l'élément de filtration 100 sont très simples et peu coûteux à réaliser, et il est clair que des moyens de passage quelconque appropriés sont envisageables sans sortir du cadre de la présente invention.The filter element 100, which can be realized in the form of a radial annular element, is very easily achievable and simple to assemble, without require significant modification of any constituent part of the pump. In the particular example shown in Figures 1 to 4, the filter ring 100 is simply resting on the upper edge 11 of the body before the ferrule 60 is put in place. means of passage 62, 12 or 102, respectively in the ferrule 60, the pump body 10 or the filter element 100 are very simple and inexpensive to perform, and it is clear that any suitable means of passage are possible without departing from the scope of this invention.

Les figures 6 à 9 montrent différentes variantes de réalisation dans lesquelles le passage d'éventation 80 s'étend d'abord entre la virole 60 et la bague de fixation 5 puis entre la virole 60 et le corps de pompe 10. Le corps de pompe 10 comporte alors un trou d'évent 85 débouchant dans le réservoir. Cette mise en oeuvre permet de réaliser le joint de col 300 complètement étanche sur le corps de pompe 10, et donc d'empêcher tout risque de contact du produit avec le passage d'éventation 80, le trou d'évent 85 étant obturé par le piston 20 en position de repos de la pompe. Eventuellement, le joint de col 300 peut comporter un clapet 310, visible sur la figure 9, pour isoler le trou d'évent 85. Dans ces variantes des figures 6 à 9, la virole 60 coopère de manière étanche avec la tige d'actionnement 21, par exemple au moyen d'une lèvre d'étanchéité 65 prévue sur la surface interne de la virole 60.Figures 6 to 9 show different variants of embodiment in which the venting passage 80 extends first between the ferrule 60 and the fixing ring 5 and then between the ferrule 60 and the pump body 10. pump body 10 then has a vent hole 85 opening into the tank. This implementation allows to make the neck seal 300 completely waterproof on the pump body 10, and thus to prevent any risk of product contact with the vent passage 80, the vent hole 85 being closed by the piston 20 in position resting the pump. Optionally, the collar 300 may comprise a valve 310, visible in FIG. 9, to isolate the vent hole 85. In these variants of FIGS. 6 to 9, the ferrule 60 cooperates in a sealed manner with the actuating rod 21, for example by means of a sealing lip 65 provided on the inner surface of the ferrule 60.

Dans le mode de réalisation des figures 6, 7 et 9, le joint 100 forme le filtre de manière similaire au mode de réalisation de la figure 5. Il est dans ces variantes disposé entre la bride radiale 61 de la virole 60 et la bague de fixation 5.In the embodiment of FIGS. 6, 7 and 9, the seal 100 forms the filter in a manner similar to the Figure 5. It is in these variants disposed between the radial flange 61 of the ferrule 60 and the fixing ring 5.

Dans l'exemple de la figure 8, le filtre 100 est disposé sur le joint 200, ces deux éléments étant prévus entre la bride radiale 61 de la virole 60 et la bague de fixation 5. En particulier, le filtre 100 est disposé entre le joint 200 et la bague de fixation.In the example of Figure 8, the filter 100 is disposed on the seal 200, these two elements being provided between the radial flange 61 of the collar 60 and the ring of 5. In particular, the filter 100 is arranged between the seal 200 and the fixing ring.

L'élément de filtration peut être réalisé en un matériau quelconque approprié adapté à filtrer et/ou à traiter l'air d'éventation pénétrant à l'intérieur du réservoir et destiné à entrer en contact avec le produit.The filter element can be made in one any suitable material suitable for filtering and / or treat venting air penetrating inside the tank and intended to come into contact with the product.

Bien que représentée en relation avec des types de pompes particuliers, il est entendu, que la présente invention s'applique à tous types de pompes de distribution de produit fluide. D'autres modifications sont également envisageables sans sortir du cadre de la présente invention dont la portée est définie par les revendications annexées.Although represented in relation to types of particular pumps, it is understood that this invention applies to all types of pumps of fluid dispensing. Other changes can also be envisaged without departing from the invention whose scope is defined by the appended claims.

Claims (13)

  1. A fluid dispenser pump including a pump body (10), a piston (20) being slidably received in leaktight manner in said pump body (10) to slide between a rest position and a dispensing position, and a fixing ring (5) serving to assemble said pump to a reservoir (1), the top edge (11) of the pump body (10) being fixed in said fixing ring (5), an annular sealing gasket (100, 200) being disposed between said pump body (10) and said fixing ring (5), said pump further being provided with a intake air passageway (80) between the reservoir (1) and the atmosphere, said pump being characterized in that a filtration and/or treatment element (100) for filtering and/or treating the intake air is provided in said intake air passageway (80), said filtration element (100) being disposed outside said pump body between said top edge (11) of the pump body and said fixing ring (5).
  2. A pump according to claim 1, in which said intake air passageway (80) is open when the pump (20) is in all of its positions.
  3. A pump according to claim 1 or 2, in which said annular gasket (100) forms the filtration element, said gasket (100) being permeable to air and impermeable to the fluid dispensed by said pump.
  4. A pump according to claim 1 or 2, in which the pump further includes a ferrule (60) mounted on the top edge (11) of the pump body (10) between said top edge and said annular gasket (200), said ferrule (60) extending inside said pump body (10) to co-operate with said piston (20) when said piston (20) is in the rest position, the filtration element (100) being disposed between the top edge (11) of the pump body (10) and said ferrule (60).
  5. A pump according to claim 4, in which the top edge (11) of the pump body (10) is provided with a through bore (70) defining a portion of the intake air passageway (80), said filtration element (100) being disposed between said top edge (11) of the pump body (10) and said ferrule (60), while covering over said through bore (70) completely.
  6. A pump according to claim 5, in which said filtration element (100) is provided with passageway means for defining a portion of air passageway between the ferrule (60) and the annular gasket (200).
  7. A pump according to claims 1 and 4, in which said intake air passageway (80) is defined between the ferrule (60) and said pup body (10) so that the ferrule (60) closes off said air passageway (80) when the pump is in the rest position, said air passageway (80) being open when said piston (20) is displaced towards its dispensing position.
  8. A pump according to any one of claims 4 to 7, in which said ferrule (60) is provided with a radial flange (61) co-operating with the top edge (11) of the pump body (10), said flange (61) incorporating an opening (63) and/or passageway means (62), such as one or more grooves and/or ribs to define a portion of intake air passageway.
  9. A pump according to claim 7 or 8, in which said top edge (11) of the pump body (10) is provided with passageway means (12) such as one or more grooves and/or ribs to define a portion of intake air passageway.
  10. A pump according to any one of claims 7, 8, and 9, in which said filtration element (100) is disposed on the end wall of said top edge (11) of the pump body (10), between said passageway means (62) in said flange (60) and said passageway means (12) in said pump body (10).
  11. A pump according to any one of claims 1 to 3, in which the pump includes a ferrule (60) mounted on the top edge (11) of the pump body (10) between said top edge and said annular gasket (200), said ferrule (60) extending inside said pump body (10) to co-operate with said piston (20), the filtration element (100) being disposed between said ferrule (60) and said fixing ring (5).
  12. A pump according to any preceding claim, in which the pump body (10) incorporates a vent hole (85) forming a portion of the intake passageway (80).
  13. A fluid dispenser device characterized in that it includes a dispenser pump according to any one of claims 1 to 12.
EP20000960826 1999-09-09 2000-09-07 Improved pump for dispensing fluid product,and fluid product dispensing device comprising same Expired - Lifetime EP1216104B1 (en)

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FR9911262 1999-09-09
FR9911262A FR2798368B1 (en) 1999-09-09 1999-09-09 IMPROVED FLUID PRODUCT DISPENSING PUMP, AND FLUID PRODUCT DISPENSING DEVICE COMPRISING SUCH A PUMP
PCT/FR2000/002475 WO2001017690A1 (en) 1999-09-09 2000-09-07 Improved pump for dispensing fluid product,and fluid product dispensing device comprising same

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EP (1) EP1216104B1 (en)
JP (1) JP4778652B2 (en)
CN (1) CN1213814C (en)
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CN1213814C (en) 2005-08-10
EP1216104A1 (en) 2002-06-26
DE60010488D1 (en) 2004-06-09
FR2798368A1 (en) 2001-03-16
DE60010488T2 (en) 2005-05-12
FR2798368B1 (en) 2001-11-23
CN1373692A (en) 2002-10-09
WO2001017690A1 (en) 2001-03-15
US7040511B1 (en) 2006-05-09
JP4778652B2 (en) 2011-09-21

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