EP0857030B1 - Distributeur de liquide - Google Patents

Distributeur de liquide Download PDF

Info

Publication number
EP0857030B1
EP0857030B1 EP96934648A EP96934648A EP0857030B1 EP 0857030 B1 EP0857030 B1 EP 0857030B1 EP 96934648 A EP96934648 A EP 96934648A EP 96934648 A EP96934648 A EP 96934648A EP 0857030 B1 EP0857030 B1 EP 0857030B1
Authority
EP
European Patent Office
Prior art keywords
bellow pump
bellow
pump
housing
dispenser
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
EP96934648A
Other languages
German (de)
English (en)
Other versions
EP0857030A1 (fr
Inventor
Gerrit Klaas Bunschoten
Simon Richard Ellis
Jan Arend Vreeman
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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 Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP96934648A priority Critical patent/EP0857030B1/fr
Publication of EP0857030A1 publication Critical patent/EP0857030A1/fr
Application granted granted Critical
Publication of EP0857030B1 publication Critical patent/EP0857030B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/06—Dispensers for soap
    • A47K5/12—Dispensers for soap for liquid or pasty soap
    • A47K5/1202—Dispensers for soap for liquid or pasty soap dispensing dosed volume
    • A47K5/1208—Dispensers for soap for liquid or pasty soap dispensing dosed volume by means of a flexible dispensing chamber

Definitions

  • the present invention is concerned with a dispenser of the kind for delivering aliquots of a liquid product from a reservoir by means of a pump which is manually operable.
  • a dispenser of the kind for delivering aliquots of a liquid product from a reservoir by means of a pump which is manually operable.
  • Such dispensers are often used in washrooms etc. for dispensing small amounts of a liquid soap product for hand washing purposes.
  • the US-patent 4,256,242 discloses a liquis soap dispenser comprising a housing, a collapsible bag for holding the liquid soap product and an operating lever or handle for actuating controlled amounts of soap from the bag.
  • the collapsible bag is connected to an outlet by means of a flexible conduit which comprises a pump.
  • These known types of dispensers offer hygiene and ease of handling for the user.
  • one problem with this kind of dispensers resides in the fact that only a small amount of liquid soap may be dispensed at the time due to the limited capacity of the peristaltic type of pump applied. The amount is usually not more than 0.5 to 1 ml.
  • the dispenser disclosed by this document comprises a disposable refill which comprises a reservoir and the bellow pump.
  • the disclosed dispenser is a rather specific one in that it can only be activated by electromagnetic means.
  • US-A-3,622,048 discloses a liquid product dispenser including a discharge tube having a slightly flared orifice.
  • WO94,'07113 Another type of dispenser comprising a disposable refill package including a reservoir fitted with a bellow pump, is disclosed by WO94,'07113.
  • the dispenser disclosed by this document can be simply constructed, is manually operable and can be easily refilled.
  • the discharge tube of the bellow pump present in this dispenser can clog with liquid products which are prone to dry out in use.
  • thickened alcohol gels may be mentioned.
  • the present invention provides a dispenser for delivering aliquots of a liquid product
  • a dispenser for delivering aliquots of a liquid product comprising a housing (1) and a disposable refill package which is positioned inside the housing and comprises a collapsible reservoir (2) for the liquid product fitted with a bellow pump (3), whereby the bellow pump comprises a product inlet valve and a product outlet valve and is manually operable via indirect actuating means (10,11), and whereby the housing is provided with a narrow opening (9) into which a correspondingly shaped portion of the bellow pump located near the outlet valve thereof, can be detachably secured, characterised in that the bellow pump (3) is equipped with a discharge tube (8) having an internal flow channel of which the diameter at the outlet is at least 1.2 times larger than at the inlet.
  • the present invention also provides a disposable refill package suitable for use in a dispenser according to the invention, comprising a collapsible reservoir (2) filled with a liquid product and attached thereto a bellow pump (3) provided with a narrow portion (9) which can be detachably secured into a correspondingly shaped opening located in the housing (1) of the dispenser, whereby the bellow pump comprises a product inlet valve and a product outlet valve and is manually operable via indirect actuating means, characterised in that the bellow pump (3) is equipped with a discharge tube (8) having an internal flow channel of which the diameter at the outlet is at least 1.2 times larger than at the inlet.
  • the internal diameter of the discharge tube at the inlet thereof is preferably larger than 1 mm. Furthermore, the internal diameter at the outlet of the discharge tube is preferably at least 1.5 times larger than at the inlet.
  • the discharge tube of the present invention desirably comprises a flow channel having an internal opening with a diameter of less than 3 mm.
  • the advantage of this type of discharge tube is that the flow rate of the liquid product flowing out of the bellow pump during each dose, is increased due to the narrow internal opening, which proved to have a self-cleaning effect on the flow channel. The possibility of bacterial growth entering the valve is thereby further diminished.
  • the discharge tube according to the invention is made of plastic material such as polyethylene, polypropylene, and PVC.
  • the reservoir which is part of the disposable refill package applied in the dispensing system of the present invention is preferably made of these types of plastic material.
  • the refill is made of one piece.
  • the bellow pump to which the discharge tube is attached comprises a liquid inlet valve and a liquid outlet valve which are respectively closed and opened by manually operable actuating means during each dose.
  • the liquid outlet valve is closed, the liquid inlet valve is opened by the suction action of the bellow when it recovers to its original position.
  • full liquid communication with the reservoir is achieved and the internal volume of the bellow pump is refilled by liquid sucked in from out of the reservoir.
  • this action of the liquid inlet and outlet valves present in the bellow pump during and immediately after each dose no air can enter the internal volume of bellow pump and reservoir and the risk of contamination of the liquid to be dispensed is minimized.
  • the material of the bellow pump is preferably such that the suction action of the bellow pump is kept more or less constant, also after many dosages have been done.
  • the bellow pump is preferably equipped with an external spring. This spring ensures that constant dosage volumes are obtained during the operating life of the dispenser even with highly viscous liquids because it forces the bellow pump back into its original shape after each dose.
  • the housing is provided with a narrow opening into which a correspondingly shaped portion of the bellow pump located near the outlet valve thereof can be detachably secured. Furthermore, this narrow opening ensures that only refill packs containing the desired type of liquid product will be mounted in the dispenser, because other packs containing different products simply will not fit.
  • This narrow opening is desirably in the form of a slit having a width of less than 5 mm, preferably less than 2 mm.
  • the dispenser of the present invention is equipped with manually operable indirect actuating means. These may practically comprise a push rod which is coupled to the bellow pump via a tilting table.
  • the internal volume of the reservoir gradually decreases when liquid product is taken out and dispensed.
  • underpressure is created and, as a consequence, the bellow of the pump will be kept in a collapsed position.
  • the resulting reduction in length of the bellow pump can be used as an empty pack indicator.
  • Dispensers comprising a bellow pump with a dosing capacity of from 0.1 to 10 ml are very suitable for use in washrooms. This type of dispensers having a dosing capacity in the mentioned range can be made much more compact than dispensers with peristaltic or plunger pumps with the same dosing capacity.
  • a housing (1) comprising a refill package which comprises a reservoir (2) and a bellow pump (3).
  • the dispenser can be manually operated with indirect actuating means comprising a push rod (10) which is coupled to a tilting table (11) which in turn is connected to the bellow pump (3).
  • a narrow portion (9) is connected to the bellow pump (3) which portion is used for securely positioning the refill package in the housing of the dispenser.
  • the bellow pump is provided with a discharge tube (8) which comprises a flow channel having a narrow internal opening of which the cross-section at the outlet is wider than at the inlet of said discharge tube.
  • an external spring (12) is present between tilting table (11) and the housing. This spring ensures that constant volumes are dosed even when applying high viscosity liquids.
  • Figure 2 shows a bellow pump provided with an inlet valve (4), an outlet valve (5) and a bellow section (6). Because the internal volume of the bellow pump contains the liquid to be dispensed during the next dose, the bellow pump functions as a type of dosing section. It can further be seen that the discharge tube (8) of the bellow pump comprises an internal flow channel of which the diameter widens from 1.6 mm at the inlet to 2.5 mm at the outlet, thus ensuring favourable operation of the dispenser even when using viscous liquids which are prone to dry out during stand-still periods.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

On décrit un distributeur de petites quantités d'un produit liquide comprenant un logement (1) ainsi qu'un emballage de recharge positionné à l'intérieur du logement (1) et comportant un réservoir (2) déformable, servant à contenir le produit liquide et muni d'une pompe à soufflet (3), laquelle comprend une soupape (4) d'entrée de produit et une soupape (5) de sortie de produit et peut être commandée manuellement par l'intermédiaire d'un moyen (10, 11) d'actionnement indirect. Le logement (1) est muni d'un orifice (9) étroit dans lequel vient se fixer de manière amovible une partie de forme correspondante de la pompe (3) à soufflet, située près de la soupape (5) de sortie. Ce distributeur est caractérisé en ce que cette pompe (3) est dotée d'un tube (8) d'écoulement présentant un diamètre intérieur d'écoulement au niveau de l'orifice de sortie qui est au moins 1,2 fois supérieur à celui de l'orifice d'entrée.

Claims (9)

  1. Distributeur servant à délivrer des quantités d'un produit liquide, comportant un boítier (1) et un module de recharge jetable, qui est disposé à l'intérieur du boítier et comprend un réservoir pliable (2) pour le produit liquide, équipé d'une pompe à soufflet (3), dans lequel la pompe à soufflet comprend une soupape d'entrée du produit et une soupape de sortie du produit et peut être actionnée manuellement à l'aide de moyens d'actionnement indirect (10, 11), et dans lequel le boítier est pourvu d'une ouverture étroite (9), dans lequel une partie de forme correspondante de la pompe à soufflet, située à proximité de la soupape de sortie de la pompe, peut être fixée de façon amovible, caractérisé en ce que la pompe à soufflet (3) est équipée d'un tube de refoulement (8) comportant un canal intérieur d'écoulement, dont le diamètre à la sortie est égal au moins à 1,2 fois le diamètre présent à l'entrée.
  2. Distributeur selon la revendication 1, dans lequel le tube de refoulement (8) possède un canal d'écoulement interne, dont le diamètre à la sortie est égal à 1,5 fois le diamètre présent à l'entrée.
  3. Distributeur selon la revendication 1 ou 2, dans lequel le tube de refoulement (8) possède un canal d'écoulement interne, dont le diamètre à l'entrée est supérieur à 1 mm.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, dans lequel le tube de refoulement (8) possède un canal d'écoulement interne, dont le diamètre à l'entrée est supérieur à 3 mm.
  5. Distributeur selon l'une quelconque des revendications 1 à 4, dans lequel la pompe à soufflet est pourvue d'un ressort externe (12).
  6. Distributeur selon l'une quelconque des revendications 1 à 5, dans lequel l'ouverture étroite dans le boítier (1) possède la forme d'une fente ayant une largeur inférieure à 5 mm et de préférence inférieure à 2 mm.
  7. Distributeur selon l'une quelconque des revendications 1 à 6, dans lequel le soufflet de la pompé à soufflet est maintenu en position comprimée sous l'action de la dépression créée lorsque le réservoir est vide sous l'effet du pompage.
  8. Distributeur selon l'une quelconque des revendications 1 à 7, dans lequel la pompe à soufflet possède une capacité comprise entre 0,1 et 10 ml.
  9. Module de recharge jetable convenant pour être utilisé dans un distributeur selon la revendication 1, comprenant un réservoir pliable (2) rempli par un produit liquide, et une pompe à soufflet (3) fixée à ce réservoir et pourvue d'une partie étroite (9), qui peut être fixée de façon amovible dans une ouverture de forme correspondante située dans le boítier (1) du distributeur, et dans lequel la pompe à soufflet comprend une soupape d'entrée du produit et une soupape de sortie du produit et peut être actionnée manuellement par l'intermédiaire de moyens d'actionnement indirect (10, 11), caractérisé en ce que la pompe à soufflet (3) est équipée d'un tube de refoulement (8) possédant un canal d'écoulement interne, dont le diamètre à la sortie est égal au moins à 1,2 fois le diamètre présent à l'entrée.
EP96934648A 1995-10-23 1996-10-11 Distributeur de liquide Expired - Lifetime EP0857030B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96934648A EP0857030B1 (fr) 1995-10-23 1996-10-11 Distributeur de liquide

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP95202859 1995-10-23
EP95202859 1995-10-23
EP96934648A EP0857030B1 (fr) 1995-10-23 1996-10-11 Distributeur de liquide
PCT/EP1996/004435 WO1997015223A1 (fr) 1995-10-23 1996-10-11 Distributeur de liquide

Publications (2)

Publication Number Publication Date
EP0857030A1 EP0857030A1 (fr) 1998-08-12
EP0857030B1 true EP0857030B1 (fr) 2001-04-18

Family

ID=8220752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934648A Expired - Lifetime EP0857030B1 (fr) 1995-10-23 1996-10-11 Distributeur de liquide

Country Status (8)

Country Link
EP (1) EP0857030B1 (fr)
AU (1) AU721392B2 (fr)
BR (1) BR9611167A (fr)
CA (1) CA2233141C (fr)
DE (1) DE69612562T2 (fr)
ES (1) ES2158353T3 (fr)
WO (1) WO1997015223A1 (fr)
ZA (1) ZA968829B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003028515A1 (fr) 2001-09-27 2003-04-10 Form Orange Produktentwicklung Dispositif d'humidification pour papier toilette

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60039336D1 (de) * 2000-08-03 2008-08-14 Koninkl Philips Electronics Nv Fluid-Transport durch Druckvariation zur Analyse biologischer Flüssigkeiten
TWI483780B (zh) 2008-09-11 2015-05-11 Gojo Ind Inc 具有用於與分配器接合的可撓機構之泵
US8636484B2 (en) 2009-01-09 2014-01-28 Tom M. Simmons Bellows plungers having one or more helically extending features, pumps including such bellows plungers, and related methods
DE102010012638A1 (de) * 2010-03-23 2011-09-29 Schülke & Mayr GmbH Behälter mit einem kollabierbaren Aufnahmebehälter und einer desinfizierenden Zusammensetzung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR561433A (fr) * 1923-01-20 1923-10-22 Appareil distributeur de savon liquide
US1911474A (en) * 1931-03-04 1933-05-30 Clarence M Smith Dispensing device
US3622048A (en) * 1970-09-02 1971-11-23 George X Batlas Dispenser for viscous liquid and pastes
US5165577A (en) * 1991-05-20 1992-11-24 Heiner Ophardt Disposable plastic liquid pump
AU4957093A (en) * 1992-09-18 1994-04-12 Unilever Plc Liquid dispenser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003028515A1 (fr) 2001-09-27 2003-04-10 Form Orange Produktentwicklung Dispositif d'humidification pour papier toilette

Also Published As

Publication number Publication date
CA2233141C (fr) 2002-02-05
DE69612562D1 (de) 2001-05-23
CA2233141A1 (fr) 1997-05-01
AU721392B2 (en) 2000-06-29
BR9611167A (pt) 1999-03-30
EP0857030A1 (fr) 1998-08-12
ZA968829B (en) 1998-04-21
ES2158353T3 (es) 2001-09-01
AU7291196A (en) 1997-05-15
DE69612562T2 (de) 2001-08-09
WO1997015223A1 (fr) 1997-05-01

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