EP1673176B1 - Fluidproduktverteiler pumpe - Google Patents

Fluidproduktverteiler pumpe Download PDF

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Publication number
EP1673176B1
EP1673176B1 EP04787288A EP04787288A EP1673176B1 EP 1673176 B1 EP1673176 B1 EP 1673176B1 EP 04787288 A EP04787288 A EP 04787288A EP 04787288 A EP04787288 A EP 04787288A EP 1673176 B1 EP1673176 B1 EP 1673176B1
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EP
European Patent Office
Prior art keywords
valve
pump
pump according
valve seat
closed position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP04787288A
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English (en)
French (fr)
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EP1673176A1 (de
Inventor
François LE MANER
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 EP1673176A1 publication Critical patent/EP1673176A1/de
Application granted granted Critical
Publication of EP1673176B1 publication Critical patent/EP1673176B1/de
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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
    • B05B11/1001—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 fluid dispenser pump and a fluid dispenser device comprising such a pump (see for example the document US-A-5,176,296 ).
  • Pumps are well known for dispensing fluid or powdery products, especially in the field of pharmacy, perfumery or cosmetics. These pumps often include a pump body which contains a pump chamber in which a piston is slid tightly for metered dispensing to produce contents in the pump chamber.
  • the pump chamber When the pump is dosing, the pump chamber generally comprises an inlet valve and outlet valve, which, when both closed, define the volume of the dose to be dispensed.
  • the sealing of the outlet valve in the closed position serves firstly to prevent leaks during actuation, but also to prevent contamination of the product contained in the pump chamber in the rest position.
  • any risk of leakage, and therefore dose reduction is undesirable. Therefore, the sealing requirement at the outlet valve is very important.
  • the present invention aims to provide a fluid dispensing pump which ensures a perfect seal in the closed position of the outlet valve of the pump chamber.
  • Another object of the present invention is to provide a fluid dispensing pump which operates in a safe and reliable manner and which guarantees a precise and reproducible dispensing of a dose of product each time the pump is actuated.
  • the present invention also aims to provide a fluid dispenser pump that is simple and inexpensive to manufacture and assemble.
  • the subject of the present invention is therefore a fluid product delivery pump comprising a pump body, a pump chamber provided with an inlet valve and an outlet valve, and a piston sliding in said pump body for dispensing the product contained in the pump chamber, said outlet valve having a valve member cooperating with a valve seat, said outlet valve having deformable sealing means provided between said valve seat and said valve member, said valve member sealing means being elastically deformed in the closed position of said outlet valve to improve the seal.
  • said piston is integral with an actuating rod, said actuating rod being hollow and defining an expulsion channel for the product, said valve seat being formed in said expulsion channel.
  • the outlet valve is biased towards its closed position by a spring, said valve being open by the pressure of the product contained in the pump chamber.
  • said deformable sealing means are formed on the valve element.
  • said deformable sealing means are formed on the valve seat.
  • said deformable sealing means comprise at least one deformable annular lip.
  • said annular lip is flexible and cooperates with a frustoconical surface in the closed position of the valve.
  • said annular lip is made by overmolding.
  • valve seat comprises a flexible annular lip cooperating with a frustoconical valve element, said valve element being substantially rigid.
  • valve seat is made of bi-material, said annular lip being made of a softer material than the rest of the valve seat.
  • said deformable sealing means comprise a deformable annular seal.
  • said annular seal cooperates with a frustoconical surface in the closed position of the valve.
  • said seal is fixed by snapping, latching or overmolding.
  • valve element is substantially rigid and comprises a deformable annular seal cooperating with a frustoconical valve seat, said valve seat being substantially rigid.
  • the present invention also relates to a fluid dispenser device comprising a pump as described above.
  • the pump comprises a pump body 10 in which slides a piston 50 secured to an actuating rod 5.
  • This rod 5 is advantageously hollow and defines an expulsion channel 4 for the product.
  • the pump body 10 contains a pump chamber 20 which is defined between an inlet valve 30 and an outlet valve 40.
  • the outlet valve 40 and the inlet valve 41 comprise the same element. 41.
  • the latter is respectively urged against an inlet valve seat 32, advantageously secured to the pump body 10, in the closed position of the inlet valve 30, and against an outlet valve seat 42, advantageously integral with the actuating rod 5, and preferably defined at the expulsion channel 4, in the closed position of the outlet valve 40.
  • the present invention would also apply to the pumps in which the valve elements input 30 and output 40 would be different, for example completely separate.
  • the present invention more specifically relates to the outlet valve 40 of the pump chamber 20, and all other components of the pump could be modified. We will therefore not describe in more detail this pump below, since the other elements of this pump are not directly involved in the present invention.
  • the valve seat 42 comprises at least one flexible deformable lip 45 which, in the closed position of the outlet valve 40, cooperates with the valve member 41.
  • This valve element 41 is preferably rigid and advantageously comprises a frustoconical surface at its surface which cooperates with the flexible lip 45.
  • the lip 45 is deformed to improve the seal in this closed position.
  • the lip 45 can be made integrally with the rest of the valve seat 42, and in particular with the actuating rod 5 and the piston 50 , in the example of the figure 1 .
  • the lip 45 could be overmolded on the valve seat 42, in which case it could be made of a softer material than the rest of the valve seat, and in particular that the rest of the stem
  • the outlet valve 40 is biased towards its closed position by a spring 70, preferably the return spring of the pump which returns to its rest position.
  • the opening of the outlet valve 40 is advantageously done by the pressure of the product contained in the pump chamber 20.
  • the outlet valve could be biased towards its closed position by the pressure of the product contained in the pump chamber. during the actuation of the pump.
  • the opening of the outlet valve could then be done at the end of actuation stroke, for example mechanically.
  • This spring 70 or this pressure of the product which urges the outlet valve 40 towards its closed position further improves the sealing in the closed position of the outlet valve and particularly during the actuation of the pump, which prevents any leakage of the product and therefore dose loss.
  • valve element 41 would comprise a flexible or deformable sealing lip which cooperates with a valve seat 42, which could for example be frustoconical.
  • the figure 2 represents a second embodiment of the present invention.
  • the deformable sealing element is formed by an annular seal disposed on the valve member 41.
  • This annular seal can be fixed on the valve member 41 by plugging, latching or overmolding.
  • this annular seal is made of a softer material than the remainder of the valve member 41 which improves the sealing in the closed position.
  • the annular seal 46 advantageously cooperates with a frustoconical surface of the valve seat 42.
  • the pump of the present invention is obviously intended to be fixed on a tank (not shown), for example by means of a fixing ring 60, which in the example shown would be a crimp cap.
  • a fixing ring 60 which in the example shown would be a crimp cap.
  • a dispensing head (not shown) can also be assembled on the actuating rod 5 to dispense the product from the pump.

Landscapes

  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (15)

  1. Pumpe zur Fluidproduktabgabe, aufweisend einen Pumpenkörper (10), eine Pumpenkammer (20), die mit einem Einlassventil (30) und einem Auslassventil (40) versehen ist, und einen Kolben (50), der in dem Pumpenkörper (10) gleitet, um das in der Pumpenkammer (20) enthaltene Produkt abzugeben, wobei das Auslassventil (40) ein Ventilelement (41) aufweist, das mit einem Ventilsitz (42) zusammenwirkt, dadurch gekennzeichnet, dass das Auslassventil (40) verformbare Abdichtungsmittel (45, 46) umfasst, die zwischen dem Ventilsitz (42) und dem Ventilelement (41) vorgesehen sind, wobei die Abdichtungsmittel (45, 46) in einer Schließstellung des Auslassventils (40) zur Verbesserung der Dichtigkeit elastisch verformt sind.
  2. Pumpe nach Anspruch 1, wobei der Kolben (50) mit einer Betätigungsstange (5) fest verbunden ist, wobei die Betätigungsstange hohl ist und einen Ausstoßkanal (4) für das Produkt festlegt, wobei der Ventilsitz (42) in dem Ausstoßkanal (4) gebildet ist.
  3. Pumpe nach Anspruch 1 oder 2, wobei während der Betätigung der Pumpe das Auslassventil (40) in Richtung auf seine Schließstellung durch eine Feder (70) vorgespannt ist, wobei das Ventil (40) durch den Druck des in der Pumpenkammer (20) enthaltenen Produkts offen gehalten ist.
  4. Pumpe nach einem der vorangehenden Ansprüche, wobei die verformbaren Abdichtungsmittel (45, 46) auf dem Ventilelement (41) gebildet sind.
  5. Pumpe nach einem der Ansprüche 1 bis 3, wobei die verformbaren Abdichtungsmittel (45, 46) auf dem Ventilsitz (42) gebildet sind.
  6. Pumpe nach Anspruch 4 oder 5, wobei die verformbaren Abdichtungsmittel zumindest eine verformbare, ringförmige Lippe (45) aufweisen.
  7. Pumpe nach Anspruch 6, wobei die ringförmige Lippe (45) flexibel ist und mit einer kegelstumpfförmigen Fläche in der Verschlussstellung des Ventils (40) zusammenwirkt.
  8. Pumpe nach Anspruch 6 oder 7, wobei die ringförmige Lippe (45) durch Überformung verwirklicht ist.
  9. Pumpe nach einem der vorangehenden Ansprüche, wobei der Ventilsitz (42) eine flexible, ringförmige Lippe (45) aufweist, die mit einem kegelstumpfförmigen Ventilelement (41) zusammenwirkt, wobei das Ventilelement (41) im Wesentlichen starr ist.
  10. Pumpe nach Anspruch 9, wobei der Ventilsitz (42) aus einem Doppelmaterial verwirklicht ist, wobei die ringförmige Lippe (45) aus einem weicheren Material als der Rest des Ventilsitzes (42) verwirklicht ist.
  11. Pumpe nach Anspruch 4 oder 5, wobei die verformbaren Abdichtungsmittel eine verformbare, ringförmige Dichtung (46) aufweisen.
  12. Pumpe nach Anspruch 11, wobei die ringförmige Dichtung (46) mit einer kegelstumpfförmigen Fläche in der Verschlussstellung des Ventils (40) zusammenwirkt.
  13. Pumpe nach Anspruch 11 oder 12, wobei die Dichtung (46) durch Aufschrumpfung, Verrastung oder Überformung festgelegt ist.
  14. Pumpe nach einem der vorangehenden Ansprüche, wobei das Ventilelement (41) im Wesentlichen starr ist und eine verformbare, ringförmige Dichtung (46) aufweist, die mit einem kegelstumpfförmigen Ventilsitz (42) zusammenwirkt, wobei der Ventilsitz (42) im Wesentlichen starr ist.
  15. Vorrichtung zur Abgabe von Fluidprodukt, dadurch gekennzeichnet, dass sie eine Pumpe nach einem der vorangehenden Ansprüche umfasst.
EP04787288A 2003-09-10 2004-09-02 Fluidproduktverteiler pumpe Active EP1673176B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0310653A FR2859460B1 (fr) 2003-09-10 2003-09-10 Pompe de distribution de produit fluide
PCT/FR2004/002233 WO2005028120A1 (fr) 2003-09-10 2004-09-02 Pompe de distribution de produit fluide

Publications (2)

Publication Number Publication Date
EP1673176A1 EP1673176A1 (de) 2006-06-28
EP1673176B1 true EP1673176B1 (de) 2008-03-19

Family

ID=34178882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04787288A Active EP1673176B1 (de) 2003-09-10 2004-09-02 Fluidproduktverteiler pumpe

Country Status (7)

Country Link
US (1) US20070029347A1 (de)
EP (1) EP1673176B1 (de)
JP (1) JP2007505256A (de)
CN (1) CN1849177A (de)
DE (1) DE602004012586T2 (de)
FR (1) FR2859460B1 (de)
WO (1) WO2005028120A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2913731B1 (fr) * 2007-03-12 2013-08-09 Valois Sas Pompe de distribution de produit fluide et distributeur comportant une telle pompe
US20130299517A1 (en) * 2012-05-09 2013-11-14 Gojo Industries, Inc. Pull-activated foam pumps, dispensers and refill units
CN104555049B (zh) * 2013-10-14 2017-04-12 株式会社衍宇 能再吸引内容物的给料器
US10967121B2 (en) * 2014-04-07 2021-04-06 Becton, Dickinson And Company Rotational metering pump for insulin patch

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420011A (en) * 1981-12-08 1983-12-13 Harry Roger Dual piston sensing mechanism
DE3940101A1 (de) * 1989-12-04 1991-06-06 Hofmann Joerg Handbetaetigbare, doppelt wirkende dosier- und/oder zerstaeuberpumpe
FR2664182B1 (fr) * 1990-07-09 1992-10-09 Valois Pompe-doseuse pour pulverisateur sous pression avec securite intrinseque.
FR2665733A1 (fr) * 1990-08-07 1992-02-14 Valois Perfectionnement d'une pompe-doseuse a precompression permettant d'en ameliorer le rendement par admission precoce dans la chambre de pompe.
NL1001366C2 (nl) * 1995-10-06 1997-04-08 Airspray Int Bv Inrichting voor het afgeven van een luchtvloeistofmengsel, in het bijzonder schuim en daarvoor bestemde bedieningseenheid.
US5826756B1 (en) * 1996-03-08 2000-11-14 Continental Sprayers Int Inc Water shield for pump dispenser
US6340102B1 (en) * 1999-02-19 2002-01-22 Cheng-Yuan Su Sealing valve structure for liquid sprayers
FR2815611B1 (fr) * 2000-10-23 2003-04-11 Valois Sa Tete de distribution et distributeur de produit fluide comportant une telle tete de distribution
BR0212901B1 (pt) * 2001-09-21 2011-12-13 dispositivo dosador com um reservatório de meio, bem como dispositivo de bomba para um dispositivo dosador.
WO2003026803A1 (de) * 2001-09-21 2003-04-03 Ing. Erich Pfeiffer Gmbh Dosiervorrichtung mit einer pumpvorrichtung
DE60320607T2 (de) * 2002-03-15 2009-05-28 L'oreal Einheit zur Verpackung und zur Ausgabe eines Produkts, insbesondere in Form einer Probe
US6866168B2 (en) * 2002-04-17 2005-03-15 Valois Sas Fluid dispenser pump

Also Published As

Publication number Publication date
US20070029347A1 (en) 2007-02-08
DE602004012586D1 (de) 2008-04-30
DE602004012586T2 (de) 2009-04-02
FR2859460B1 (fr) 2005-11-04
CN1849177A (zh) 2006-10-18
WO2005028120A1 (fr) 2005-03-31
FR2859460A1 (fr) 2005-03-11
JP2007505256A (ja) 2007-03-08
EP1673176A1 (de) 2006-06-28

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