EP1328351A1 - Ausgabepumpe für medien - Google Patents

Ausgabepumpe für medien

Info

Publication number
EP1328351A1
EP1328351A1 EP01980614A EP01980614A EP1328351A1 EP 1328351 A1 EP1328351 A1 EP 1328351A1 EP 01980614 A EP01980614 A EP 01980614A EP 01980614 A EP01980614 A EP 01980614A EP 1328351 A1 EP1328351 A1 EP 1328351A1
Authority
EP
European Patent Office
Prior art keywords
pump
piston
pump chamber
outlet valve
low
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
EP01980614A
Other languages
English (en)
French (fr)
Other versions
EP1328351B1 (de
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP1328351A1 publication Critical patent/EP1328351A1/de
Application granted granted Critical
Publication of EP1328351B1 publication Critical patent/EP1328351B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B05B11/1019—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element the inlet valve moving concurrently with the controlling element during whole pressure and aspiration strokes, e.g. a cage for an inlet valve ball being part of the controlling element
    • 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
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke
    • 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
    • B05B11/1061—Pump priming means
    • B05B11/1063—Air exhausted from the pump chamber being discharged into the container during priming

Definitions

  • the present invention relates to a fluid dispenser pump.
  • Fluid dispensing pumps are well known in the state of the art, and generally comprise a pump body which defines a pump chamber disposed between an inlet valve and an outlet valve, a piston sliding in said body pump to expel the product contained in said pump chamber.
  • the pump can comprise two pistons, a high piston and a low piston, which slide together in the pump body during actuation, until the opening of the outlet valve and the expulsion of the product contained in the pump chamber.
  • the accuracy of the dosage, as well as the assurance of the distribution of a full dose at each actuation may be essential criteria. It is in particular important to prevent dispensing of a partial dose, and to avoid partial filling of the pump chamber after actuation thereof.
  • the object of the present invention is to provide a pump for dispensing a fluid product which guarantees the precision of the dosage on each actuation of the pump and which ensures the dispensing of a complete dose.
  • the present invention also aims to provide such a fluid dispensing pump which is simple and inexpensive to manufacture and assemble.
  • the present invention therefore relates to a fluid dispensing pump comprising a pump body comprising a pump chamber delimited between a high piston and a low piston, said pistons sliding in leaktight manner in said pump body, said pump chamber comprising an inlet valve and an outlet valve, said bottom piston cooperating, when the dose is complete, with said outlet valve for open it and allow the expulsion of the product contained in the pump chamber, characterized in that the low piston is separated from the inlet valve seat and is mounted floating in the pump chamber, said low piston being brought back towards its rest position by said inlet valve seat.
  • the outlet valve comprises a movable valve member in the pump chamber and which is urged towards its closed position by the pressure of the product contained in the pump chamber, said movable valve member comprising a cooperating shoulder, when the dose is complete, with said low piston or an element integral with the latter, so that the low piston withdraws the valve member from its valve seat to open the outlet valve.
  • the outside diameter of the top piston is greater than the outside diameter of the bottom piston.
  • valve seat of the inlet valve is urged by an elastic element such as a spring towards the rest position of the pump, in which said low piston or an element integral with this urges the outlet valve towards its closed position.
  • said low piston acts as a priming element to evacuate the air contained in the pump chamber during the first actuation of the pump.
  • an air evacuation passage is formed between the low piston, the high piston and the inlet valve seat to allow the evacuation of air from the pump chamber, said low piston sealingly closing said air passage when the pump chamber contains fluid to be dispensed.
  • the outlet valve member has a second shoulder which cooperates with said low piston or an element integral with said low piston in the rest position of the pump so that the low piston urges said movable valve member towards its position. closing.
  • FIG. 1 is a schematic cross-sectional view of a pump according to an advantageous embodiment of the present invention, in . rest position,
  • FIG. 2 is a figure similar to that of FIG. 1, in the priming position,
  • the pump comprises a pump body 10 in which a high piston 20 and a low piston 30 slides in leaktight manner. Between said pistons 20 and 30 is defined a pump chamber 11 which comprises an inlet valve 40 and an outlet valve 50.
  • the inlet valve 40 may be a ball valve comprising a ball 41 cooperating with a corresponding valve seat 42.
  • the low piston 30, or an element 70 integral with the latter cooperates, when the dose is complete, with the outlet valve 50 to open it.
  • the dose can be complete at the end of the actuation stroke of the low piston 30, but it is also possible to have a full dose before the end of travel.
  • the outlet valve 50 opens before the low piston has completed its complete stroke.
  • the outlet valve 50 comprises a movable outlet valve member 51 which can move axially in the pump chamber 11, said movable valve member 51 being biased towards its position of closure, in which it rests against its valve seat 52, by the pressure of the product disposed inside the pump chamber 11.
  • valve member 51 advantageously comprises a first shoulder 55 which cooperates with the low piston 30 or an element 70 integral with said low piston 30, when the dose is complete, so that the low piston 30 mechanically withdraws the valve member 51 from its valve seat 52 for open the outlet valve 50.
  • the movable valve member 51 of the outlet valve 50 also comprises a second shoulder 56 which cooperates with the low piston 30 or an element integral with the latter 70 in the rest position of the pump so that the movable valve member 51 is biased towards its closed position.
  • the pump is in the rest position.
  • the user actuates the pump, he exerts an axial pressure on the top piston 20 which will slide inside the pump body 10.
  • the fluid contained in the pump chamber 11 being incompressible, this also causes the low piston 30 to slide in leaktight manner inside the pump body 10.
  • the inlet valve 40 is biased towards its closed position by the pressure of the product inside the pump chamber, and it is similarly for the outlet valve 50, the movable valve member 51 of which is also urged towards its closed position by the pressure of the product inside the pump chamber 11.
  • the low piston 30 being less than the diameter of the high piston 20, the low piston 30, respectively the element secured to the low piston 30 and which is referenced 70 in the figures, moves faster than the high piston 20 during actuation of the pump. It thus passes from its position in which it is in contact with the second shoulder 56, shown in FIG. 1, towards its position in which it comes into contact with the first shoulder 55 of the movable valve member 51. At this time there, the low piston cooperates with the movable valve member 51 to move it axially inside the pump chamber, by removing it from its valve seat 52, in order to open the outlet valve 50 and thus allow the expulsion of the product contained in the pump chamber 11.
  • the distance between the shoulders 55 and 56 determines the opening time of the outlet valve, and therefore the volume of the dose to be dispensed. It is enough to modify only this difference to vary the volume of the dose.
  • the present invention therefore makes it possible to vary very simply and very inexpensively the dose volume to be dispensed, by modifying only one piece of the pump.
  • the inlet valve 40 of the pump chamber 11 comprises a valve seat 42 mounted floating inside the body of the pump 10 and biased by a spring towards its rest position shown in FIG. 1
  • This spring 60 is the return spring of the pump.
  • the low piston 30 has a shoulder which cooperates with said seat of the inlet valve 42 so that when the outlet valve is open, the product contained in the pump chamber 11 is expelled by means of said bottom piston 30, which is brought back to its starting position by the spring 60 which acts on the valve seat 42.
  • the low piston 30 is produced separately from the inlet valve seat 42. The advantage of producing the low piston 30 separately will be described below with reference to Figure 2 in connection with a particular embodiment of the invention.
  • the bottom piston 30 is produced separately from the inlet valve seat 42.
  • the fact of producing the bottom piston 30 separately from the inlet valve seat 42, and mounting said bottom piston 30 floating at the interior of the pump body allows said bottom piston to be used as a priming element. Indeed, as visible in FIG.

Landscapes

  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Coating Apparatus (AREA)
EP01980614A 2000-10-23 2001-10-19 Ausgabepumpe für medien Expired - Lifetime EP1328351B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0013569 2000-10-23
FR0013569A FR2815675B1 (fr) 2000-10-23 2000-10-23 Pompe de distribution de produit fluide
PCT/FR2001/003257 WO2002034413A1 (fr) 2000-10-23 2001-10-19 Pompe de distribution de produit fluide

Publications (2)

Publication Number Publication Date
EP1328351A1 true EP1328351A1 (de) 2003-07-23
EP1328351B1 EP1328351B1 (de) 2008-02-20

Family

ID=8855642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01980614A Expired - Lifetime EP1328351B1 (de) 2000-10-23 2001-10-19 Ausgabepumpe für medien

Country Status (8)

Country Link
US (1) US6811060B2 (de)
EP (1) EP1328351B1 (de)
JP (1) JP3878552B2 (de)
CN (1) CN1251806C (de)
AU (1) AU2002212417A1 (de)
DE (1) DE60132907T2 (de)
FR (1) FR2815675B1 (de)
WO (1) WO2002034413A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2832767B1 (fr) * 2001-11-28 2005-10-07 Valois Sa Pompe de distribution de produit fluide et dispositif de distribution de produit fluide incorporant une telle pompe
FR2848617B1 (fr) * 2002-12-16 2006-03-17 Oreal Pompe et recipient ainsi equipe
DE102005009295A1 (de) * 2004-07-13 2006-02-16 Ing. Erich Pfeiffer Gmbh Dosiervorrichtung für Medien
ATE383206T1 (de) * 2004-09-25 2008-01-15 Obrist Closures Switzerland Abgabepumpe
FR2878002B1 (fr) * 2004-11-16 2011-01-21 Valois Sas Pompe de distribution de produit fluide et distributeur comportant une telle pompe de distribution.
US7913714B2 (en) * 2007-08-30 2011-03-29 Perlick Corporation Check valve and shut-off reset device for liquid delivery systems
US8869824B2 (en) * 2007-08-30 2014-10-28 Perlick Corporation Check valve and shut-off reset device for liquid delivery systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290043B (de) * 1966-03-12 1969-02-27 Albert Rudolf Zerstaeuberpumpe, insbesondere fuer Parfuem oder andere kosmetische Fluessigkeiten
FR2652389B1 (fr) * 1989-09-26 1992-12-04 Debard Andre Perfectionnement aux pompes a precompression pour la diffusion d'un liquide.
US5303854A (en) * 1993-03-08 1994-04-19 Spruhventile Gmbh Pharmaceutical pump dispenser having hydraulically closed outlet port
GB9519346D0 (en) * 1995-09-22 1995-11-22 English Glass Company The Limi Dispensing systems
US6698623B2 (en) * 2002-04-17 2004-03-02 Valois S.A. Fluid dispenser pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0234413A1 *

Also Published As

Publication number Publication date
FR2815675B1 (fr) 2003-05-02
AU2002212417A1 (en) 2002-05-06
CN1251806C (zh) 2006-04-19
DE60132907D1 (de) 2008-04-03
US20040011823A1 (en) 2004-01-22
WO2002034413A1 (fr) 2002-05-02
JP3878552B2 (ja) 2007-02-07
EP1328351B1 (de) 2008-02-20
US6811060B2 (en) 2004-11-02
DE60132907T2 (de) 2009-02-12
JP2004527363A (ja) 2004-09-09
FR2815675A1 (fr) 2002-04-26
CN1494460A (zh) 2004-05-05

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