EP2322066A1 - Method and dispenser for releasing portions of a fluid - Google Patents

Method and dispenser for releasing portions of a fluid Download PDF

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Publication number
EP2322066A1
EP2322066A1 EP10014191A EP10014191A EP2322066A1 EP 2322066 A1 EP2322066 A1 EP 2322066A1 EP 10014191 A EP10014191 A EP 10014191A EP 10014191 A EP10014191 A EP 10014191A EP 2322066 A1 EP2322066 A1 EP 2322066A1
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EP
European Patent Office
Prior art keywords
fluid
dispenser
line section
delivery
pump
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EP10014191A
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German (de)
French (fr)
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EP2322066B1 (en
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Hans Georg Hagleitner
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Individual
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    • 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
    • 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
    • B05B11/1097—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 with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke

Definitions

  • the invention relates to a method for lossless delivery of portions of a fluid from a supply by means of a dispenser having a reservoir, a line section comprising a dispensing opening and a feed pump arranged between the reservoir and the dispensing opening, and a dispenser for use in this method.
  • the invention has now set itself the task of providing a method according to which the loss is minimized as possible, and achieves this in two coordinated steps in that at the end of each delivery process at the discharge port pending fluid is conveyed back through the line section, and that Contamination of each subsequent portion of the fluid is thereby at least largely prevented, that the fluid is conveyed through a line section, which is made of an antimicrobial plastic.
  • the loss of fluid can not be minimized merely by avoiding impurities since, even in a sterile environment, the fluid can dribble and dry, so that the abovementioned first method step of emptying is also necessary.
  • the feed pump is designed as a peristaltic pump with a switchable conveying direction and the dispensing opening is provided on a line section which is made of an antimicrobially active plastic.
  • a Schiauchquetschpumpe is particularly suitable for the delivery of the various fluids in the inventive method, since it does not require check valves, the return of a fluid residue through the Normally do not allow the feed pump.
  • the line section In order to be able to easily exchange the line section, it is preferably fastened releasably to the dispenser without tools.
  • the last line section is directed at least approximately vertically downwards, wherein the cross section of the line section is related to properties of the fluid to be dispensed: the less fluid the fluid is and the lower its surface tension, the smaller the diameter of the Be conduit section to guarantee the trouble-free return of the fluid, which is necessary to prevent dripping or drying.
  • the diameter of the Be conduit section For alcoholic solutions, for example, a diameter of 1.6 mm has been found to be favorable.
  • the tool-less interchangeability mentioned above is advantageous.
  • a fluid dispenser has a housing 21 with a cover, in the upper region of a reservoir 23 is inserted into a liquid-tight receptacle 20 of an intermediate container 2 interchangeable.
  • the reservoir 23 has a reducible volume and is in particular a foil bag or the like, so that the fluid to be dispensed is not replaced by air.
  • a compact working block 1 is provided in which all the elements required for the function are combined.
  • the working block 1 contains the intermediate container 2, from which a peristaltic pump 5 sucks in fluid and conveys it through a line section 8 to an outlet opening 9.
  • the peristaltic pump 5 has an electric drive motor 6, in particular a DC motor whose speed is directly proportional to the motor voltage.
  • a rotor On an output shaft, a rotor is fixed, are rotatably mounted on the two or three circumferentially projecting rollers 27 and rolling elements.
  • a hose 28 is disposed around the rotor, which in section in Fig. 2 can be seen, and is squeezed by the rollers 27 upon rotation of the rotor so that fluid contained in the tube 28 is conveyed from the inlet 29 to the outlet 30.
  • Such a peristaltic pump 5 is self-priming and is not affected by trapped air in their conveying effect, so it is well suited for the uniform dosage of portions of any fluid. Their conveying direction can be reversed by switching the drive motor 6, since it is valve-free.
  • Fig. 3 shows a view obliquely from below into the working block 1.
  • the work block has a molded plastic part, on the upper side of the intermediate container 2 is provided, which is closed with a receptacle 20 carrying lid 19, in particular welded.
  • the lines and a control board are provided on the underside recesses for the peristaltic pump 5, which are provided.
  • a hose 4 leads to the last line section 8 with the discharge opening 9.
  • the inlet 29 of the soap pump 5 is connected by a further hose 31 with the downwardly projecting outlet 3 of the intermediate container 2.
  • the line section 8 is provided by a U-shaped clip 32 replaceable on the work block 1.
  • the function of the dispenser is as follows: The dispensing of a portion of the fluid contained in the reservoir 23 by non-contact or via an actuating button initiated commissioning of the drive motor 6, which puts the peristaltic pump 5 in rotation and the fluid contained in the hose 28 through the hose 4 and the line section 8 promotes the discharge opening 9, from which it is discharged, for example, in the hand held.
  • the drive motor 6 is switched in its direction of rotation, and conveys the fluid back to the reservoir 23, wherein at least the last line section 8, which in particular projects vertically downwards, is emptied.
  • the fluid can also be sucked back from a part of the hose 4 become. Therefore, no fluid can drip out of the dispensing opening 9 or flow out or evaporate.
  • the recirculated fluid is conveyed again loss-free to the discharge opening at the beginning of the next portion delivery. In this case, the contamination of the emptied line section 8 and the re-promoted subsequent portion of the fluid is avoided.
  • the discharge opening 9 is closed.
  • the line section 8 possibly also of the peristaltic pump 5 continuing hose 4, from an antimicrobial, bactericidal, fungicidal od. The like. Effective plastic is made.
  • a layer is provided which contains a zeolite grid with embedded silver ions. Even after a longer break again promoted fluid can not come into contact with impurities on the inner surfaces of the empty line section 8, so that even when possible germ-free to handle fluids no discardable flow of contaminated material is delivered.

Abstract

The method involves conveying fluid, available at a discharge opening (9), back to a storage container through a pipe section (8) after completion of conveyance processes. Contamination of effective portions of the fluid is prevented such that the fluid is conveyed through the pipe section that is made of anti-microbial active plastic. A conveying direction of a constricted tube pump (5) is reversed for conveying the fluid back through the pipe section. The pipe section is detachably arranged at a dispenser without requiring tools. An independent claim is also included for a dispenser comprising a storage container.

Description

Die Erfindung betrifft ein Verfahren zur möglichst verlustfreien Abgabe von Portionen eines Fluids aus einem Vorrat mittels eines Spenders, der einen Vorratsbehälter, einen eine Ausgabeöffnung umfassenden Leitungsabschnitt und eine zwischen dem Vorratsbehälter und der Ausgabeöffnung angeordnete Förderpumpe aufweist, sowie einen Spender zur Verwendung in diesem Verfahren.The invention relates to a method for lossless delivery of portions of a fluid from a supply by means of a dispenser having a reservoir, a line section comprising a dispensing opening and a feed pump arranged between the reservoir and the dispensing opening, and a dispenser for use in this method.

Bei einer portionsweisen Abgabe eines Fluids aus einem Vorrat ist es wünschenswert, wenn die Summe der Einzelportionen möglichst der Menge des Vorrates entspricht, wobei Verluste bzw. Schwund unvermeidbar sind. Diese Größe ist auch von der Art des zu spendenden Fluids abhängig, bevorzugt ist hier von flüssigen, pastösen oder gelartigen Massen die Rede, wobei dies Seifen, Reinigungsmittel, Desinfektionsmittel, Pflegemittel wie Hautcreme oder Zahnpasta, aber auch Nahrungsmittel, wie Ketchup oder Senf, usw, sein können.When dispensing portions of a fluid from a supply, it is desirable if the sum of the individual portions as possible corresponds to the amount of stock, with losses or fading are unavoidable. This size is also dependent on the type of fluid to be dispensed, preferred here is liquid, pasty or gelatinous masses, which include soaps, detergents, disinfectants, care products such as skin cream or toothpaste, but also foods such as ketchup or mustard, etc , could be.

Alle diese Substanzen neigen zu Veränderungen ihrer Konsistenz durch Eindickung oder Austrocknung, zu Ablagerungen in strömungsarmen bzw. mit Luft in Kontakt kommenden Leitungsabschnitten, vor allem im letzten, die Ausgabeöffnung umfassenden Leitungsabschnitt, sodass von Zeit zu Zeit Reinigungsmaßnahmen erforderlich sind, um die Funktionsfähigkeit des Spenders zu erhalten Darüber hinaus bedeuten aber diese Veränderungen ihrer Konsistenz auch einen Verlust, der bei ständigem Gebrauch des Spenders nur geringe Mengen, bei größeren Pausen zwischen der Abgabe aber recht beträchtliche Mengen an Fluid umfasst.All of these substances tend to change their consistency by thickening or dehydration, deposits in low-flow or air-contacting line sections, especially in the last, the discharge port comprehensive line section, so from time to time cleaning measures are required to the functioning of the dispenser In addition, however, these changes in their consistency also mean a loss that involves only small amounts when the donor is in constant use, but rather large amounts of fluid during longer intervals between deliveries.

Die Erfindung hat es sich nun zur Aufgabe gestellt, ein Verfahren bereitzustellen, nach dem der Verlust möglichst minimiert wird, und erreicht dies in zwei aufeinander abgestimmten Verfahrensschritten dadurch, dass nach Abschluss jedes Fördervorganges an der Ausgabeöffnung anstehendes Fluid durch den Leitungsabschnitt zurückgefördert wird, und dass einer Verunreinigung jeder Folgeportion des Fluids dadurch zumindest weitgehend vorgebeugt wird, dass das Fluid durch einen Leitungsabschnitt gefördert wird, der aus einem antimikrobiell wirksamen Kunststoff gefertigt ist.The invention has now set itself the task of providing a method according to which the loss is minimized as possible, and achieves this in two coordinated steps in that at the end of each delivery process at the discharge port pending fluid is conveyed back through the line section, and that Contamination of each subsequent portion of the fluid is thereby at least largely prevented, that the fluid is conveyed through a line section, which is made of an antimicrobial plastic.

Das Entleeren des letzten Leitungsabschnittes allein, das vor allem bei Seifenspendern durch Ausblasen oder Rücksaugen bekannt ist (z.B. EP 771 166 , EP 984 715 , EP 1 491 124 ), um das Nachtropfen des Spenders bzw. das Eintrocknen des Fluids zu vermeiden, führt nicht zum gewünschten Erfolg, da der leere Leitungsabschnitt verunreinigt, beispielsweise durch Mikroorganismen kontaminiert werden kann, und die folgende Portion des Fluids diese Verunreinigungen und Verschmutzungen aufnimmt. Zumindest der erste Teil der Folgeportion ist dadurch verändert und hat nicht mehr den Reinheitsgrad des Vorrates, Je nach Art des Fluids und der Verunreinigung kann diese Portion den vorgesehenen Zweck nicht erfüllen, und muss als Vorlauf gegebenenfalls sogar weggeworfen werden.The emptying of the last line section alone, which is known especially in soap dispensers by blowing or sucking back (eg EP 771 166 . EP 984 715 . EP 1 491 124 ), to avoid the dripping of the dispenser or the drying of the fluid, does not lead to the desired success, since the empty line section contaminated, for example, can be contaminated by microorganisms, and the subsequent portion of the fluid receives these impurities and contaminants. At least the first part of the subsequent portion is thereby changed and no longer has the purity of the stock, Depending on the nature of the fluid and the impurity, this portion can not fulfill the intended purpose, and must possibly even be thrown away as a forerunner.

Aus der EP 838 397 oder EP 861 128 sind Spender bekannt, bei denen mittels einer Hubkolbenpumpe das Fluid aus einem Behälter abgegeben wird, der nicht kompressibel ist, und in den Luft zum Ausgleich des Fluids einströmt. Um eine Besiedlung gefährdeter Bereiche des Spenders mit Mikroorganismen zumindest zu erschweren, werden für den Leitungsabschnitt und umgebende Teile Materialien verwendet, die eine gegen Mikroorganismen wirkende Substanz enthalten oder mit dieser an der Oberfläche versehen sind, und sie über einen längeren Zeitraum an das Fluid abgeben. insbesondere können zu diesem Zweck Kunststoffe verwendet werden, die Silberionen enthalten, siehe auch DE10 2007 043 311 , DE 10 2007 035 063 , DE 20 2007 010 891 , oder DE 43 44 306 .From the EP 838 397 or EP 861 128 Dispensers are known in which by means of a reciprocating pump, the fluid is discharged from a container which is not compressible, and flows into the air to compensate for the fluid. In order to at least complicate a colonization of endangered areas of the donor with microorganisms, materials are used for the line section and surrounding parts, which contain a microorganism-acting substance or are provided with this on the surface, and release it over a longer period of time to the fluid. In particular, plastics containing silver ions can be used for this purpose, see also DE10 2007 043 311 . DE 10 2007 035 063 . DE 20 2007 010 891 , or DE 43 44 306 ,

Anderseits lässt sich aber der Verlust an Fluid nicht durch eine bloße Vermeidung von Verunreinigungen minimieren, da auch in einer sterilen Umgebung das Fluid nachtropfen und eintrocknen kann, sodass also auch der vorstehend erwähnte erste Verfahrensschritt des Entleerens notwendig ist.On the other hand, however, the loss of fluid can not be minimized merely by avoiding impurities since, even in a sterile environment, the fluid can dribble and dry, so that the abovementioned first method step of emptying is also necessary.

Bei einem zur Verwendung in erfindungsgemäßen Verfahren geeigneten Spender ist daher vorgesehen, dass die Förderpumpe als Schlauchquetschpumpe mit umschaltbarer Förderrichtung ausgebildet und die Ausgabeöffnung an einem Leitungsabschnitt vorgesehen ist, der aus einem antimikrobiell wirksamen Kunststoff gefertigt ist. Gerade eine Schiauchquetschpumpe eignet sich beim erfindungsgemäßen Verfahren besonders für die Abgabe der verschiedenen Fluide, da sie keine Rückschlagventile erfordert, die eine Rückförderung eines Fluidrests durch die Förderpumpe im Normalfall nicht zulassen. Die Verwendung einer umschaltbaren Schlauchquetschpumpe für die Seifenförderung in einem berührurigslosen Waschtisch zeigt beispielsweise die US 5,781,942 .In a dispenser suitable for use in methods according to the invention, it is therefore provided that the feed pump is designed as a peristaltic pump with a switchable conveying direction and the dispensing opening is provided on a line section which is made of an antimicrobially active plastic. Especially a Schiauchquetschpumpe is particularly suitable for the delivery of the various fluids in the inventive method, since it does not require check valves, the return of a fluid residue through the Normally do not allow the feed pump. The use of a switchable peristaltic pump for the soap promotion in a berührurigslosen vanity shows, for example, the US 5,781,942 ,

Um den Leitungsabschnitt einfach austauschen zu können, ist er bevorzugt werkzeuglos lösbar am Spender befestigt.In order to be able to easily exchange the line section, it is preferably fastened releasably to the dispenser without tools.

In vielen Fällen ist bei Spendern der letzte Leitungsabschnitt zumindest annähernd vertikal nach unten gerichtet, wobei der Querschnitt des Leitungsabschnittes in einem Zusammenhang mit Eigenschaften des zu spendenden Fluids steht: Je dünnflüssiger das Fluid ist und je geringer seine Oberflächenspannung ist, desto kleiner muss der Durchmesser des Leitungsabschnitts sein, um die störungsfreie Rückförderung des Fluids zu garantieren, die notwendig ist, um das Nachtropfen bzw. Antrocknen zu vermeiden. Für alkoholische Lösungen hat sich beispielsweise ein Durchmesser von 1,6 mm als günstig herausgestellt. Um den Spender für unterschiedliche Fluide einsetzen zu können, ist die vorstehend erwähnte werkzeuglose Tauschbarkeit natürlich von Vorteil.In many cases, in donors, the last line section is directed at least approximately vertically downwards, wherein the cross section of the line section is related to properties of the fluid to be dispensed: the less fluid the fluid is and the lower its surface tension, the smaller the diameter of the Be conduit section to guarantee the trouble-free return of the fluid, which is necessary to prevent dripping or drying. For alcoholic solutions, for example, a diameter of 1.6 mm has been found to be favorable. Of course, to use the dispenser for different fluids, the tool-less interchangeability mentioned above is advantageous.

Nachstehend wird nun die Erfindung anhand der Figuren der beiliegenden Zeichnung näher beschrieben, ohne darauf beschränkt zu sein. Es zeigen:

Fig. 1
eine Vorderansicht eines Fluidspenders mit abgenommener Abdeckung,
Fig. 2
einen Vertikalschnitt durch den unteren Teil des Spenders,
Fig. 3
eine Schrägansicht des Arbeitsblockes von unten, und
Fig. 4
eine Schrägansicht des die Abgabeöffnung umfassenden Leitungsabschnittes.
The invention will now be described in more detail with reference to the figures of the accompanying drawing, without being limited thereto. Show it:
Fig. 1
a front view of a fluid dispenser with removed cover,
Fig. 2
a vertical section through the lower part of the dispenser,
Fig. 3
an oblique view of the working block from below, and
Fig. 4
an oblique view of the dispensing opening comprehensive line section.

Ein Fluidspender weist ein Gehäuse 21 mit einer Abdeckung auf, in dessen oberen Bereich ein Vorratsbehälter 23 in eine flüssigkeitsdichte Aufnahme 20 eines Zwischenbehälters 2 austauschbar eingesetzt ist. Der Vorratsbehälter 23 weist ein verkleinerbares Volumen auf und ist insbesondere ein Folienbeutel oder dergleichen, sodass das abzugebende Fluid nicht durch Luft ersetzt wird. Im unteren Bereich des Spenders ist ein kompakter Arbeitsblock 1 vorgesehen, in dem alle für die Funktion erforderlichen Elemente zusammengefasst sind. Der Arbeitsblock 1 enthält den Zwischenbehälter 2, aus dem eine Schlauchquetschpumpe 5 Fluid ansaugt und durch einen Leitungsabschnitt 8 zu einer Ausgabeöffnung 9 fördert.A fluid dispenser has a housing 21 with a cover, in the upper region of a reservoir 23 is inserted into a liquid-tight receptacle 20 of an intermediate container 2 interchangeable. The reservoir 23 has a reducible volume and is in particular a foil bag or the like, so that the fluid to be dispensed is not replaced by air. In the lower part of the dispenser, a compact working block 1 is provided in which all the elements required for the function are combined. The working block 1 contains the intermediate container 2, from which a peristaltic pump 5 sucks in fluid and conveys it through a line section 8 to an outlet opening 9.

Die Schlauchquetschpumpe 5 weist einen elektrischen Antriebsmotor 6 auf, insbesondere einen Gleichstrommotor, dessen Drehzahl direkt proportional zur Motorspannung ist. An einer Abtriebswelle ist ein Rotor befestigt, an dem zwei oder drei über den Umfang vorstehende Rollen 27 bzw. Wälzkörper drehbar gelagert sind. Etwa im Halbkreis ist um den Rotor ein Schlauch 28 angeordnet, der im Schnitt in Fig. 2 ersichtlich ist, und von den Rollen 27 bei Drehung des Rotors so gequetscht wird, dass im Schlauch 28 enthaltenes Fluid vom Einlass 29 zum Auslass 30 gefördert wird. Eine derartige Schlauchquetschpumpe 5 ist selbstansaugend und wird durch eingeschlossene Luft in ihrer Förderwirkung nicht beeinträchtigt, sodass sie sich zur gleichmäßigen Dosierung von Portionen jeglichen Fluids gut eignet. Ihre Förderrichtung kann durch Umschalten des Antriebsmotors 6 umgekehrt werden, da sie ventilfrei ist.The peristaltic pump 5 has an electric drive motor 6, in particular a DC motor whose speed is directly proportional to the motor voltage. On an output shaft, a rotor is fixed, are rotatably mounted on the two or three circumferentially projecting rollers 27 and rolling elements. Approximately in a semicircle, a hose 28 is disposed around the rotor, which in section in Fig. 2 can be seen, and is squeezed by the rollers 27 upon rotation of the rotor so that fluid contained in the tube 28 is conveyed from the inlet 29 to the outlet 30. Such a peristaltic pump 5 is self-priming and is not affected by trapped air in their conveying effect, so it is well suited for the uniform dosage of portions of any fluid. Their conveying direction can be reversed by switching the drive motor 6, since it is valve-free.

Fig. 3 zeigt eine Ansicht schräg von unten in den Arbeitsblock 1. Der Arbeitsblock weist einen aus Kunststoff gefertigten Formteil auf, an dessen Oberseite der Zwischenbehälter 2 vorgesehen ist, der mit einem die Aufnahme 20 tragenden Deckel 19 verschlossen, insbesondere verschweißt ist. An der Unterseite sind Ausnehmungen für die Schlauchquetschpumpe 5, die Leitungen und eine nicht gezeigte Steuerungsplatine vorgesehen. Vom Auslass 30 der Schlauchquetschpumpe 5 führt ein Schlauch 4 zum letzten Leitungsabschnitt 8 mit der Ausgabeöffnung 9. Der Einlass 29 der Seifenpumpe 5 ist durch einen weiteren Schlauch 31 mit dem nach unten ragenden Auslass 3 des Zwischenbehälters 2 verbunden. Der Leitungsabschnitt 8 ist durch einen U-förmigen Steckbügel 32 austauschbar am Arbeitsblock 1 vorgesehen. Fig. 3 shows a view obliquely from below into the working block 1. The work block has a molded plastic part, on the upper side of the intermediate container 2 is provided, which is closed with a receptacle 20 carrying lid 19, in particular welded. On the underside recesses for the peristaltic pump 5, the lines and a control board, not shown, are provided. From the outlet 30 of the peristaltic pump 5, a hose 4 leads to the last line section 8 with the discharge opening 9. The inlet 29 of the soap pump 5 is connected by a further hose 31 with the downwardly projecting outlet 3 of the intermediate container 2. The line section 8 is provided by a U-shaped clip 32 replaceable on the work block 1.

Die Funktion des Spenders ist wie folgt: Die Abgabe einer Portion des im Vorratsbehälter 23 enthaltenen Fluids erfolgt durch berührungslose oder über eine Betätigungstaste veranlasste Inbetriebnahme des Antriebsmotors 6, der die Schlauchquetschpumpe 5 in Drehung versetzt und das im Schlauch 28 enthaltene Fluid durch den Schlauch 4 und den Leitungsabschnitt 8 zur Ausgabeöffnung 9 fördert, aus der es beispielsweise in die untergehaltene Hand abgegeben wird. Sobald die vorbestimmte Portion abgegeben ist, wird der Antriebsmotor 6 in seiner Drehrichtung umgeschaltet, und fördert das Fluid zurück zum Vorratsbehälter 23, wobei zumindest der letzte Leitungsabschnitt 8, der insbesondere vertikal nach unten ragt, entleert ist. Gegebenenfalls kann das Fluid auch aus einem Teil des Schlauches 4 rückgesaugt werden. Es kann daher kein Fluid aus der Ausgabeöffnung 9 austropfen oder ausfließen bzw. verdunsten.The function of the dispenser is as follows: The dispensing of a portion of the fluid contained in the reservoir 23 by non-contact or via an actuating button initiated commissioning of the drive motor 6, which puts the peristaltic pump 5 in rotation and the fluid contained in the hose 28 through the hose 4 and the line section 8 promotes the discharge opening 9, from which it is discharged, for example, in the hand held. Once the predetermined portion is delivered, the drive motor 6 is switched in its direction of rotation, and conveys the fluid back to the reservoir 23, wherein at least the last line section 8, which in particular projects vertically downwards, is emptied. Optionally, the fluid can also be sucked back from a part of the hose 4 become. Therefore, no fluid can drip out of the dispensing opening 9 or flow out or evaporate.

Die Rückförderung des Fluids ist auch mit einer doppelt wirkenden Hubkolbenpumpe od. dgl, durchführbar, wobei dann entsprechende Rückschlagventile vorgesehen werden müssen.The return delivery of the fluid is also od with a double-acting piston pump. The like, feasible, in which case appropriate check valves must be provided.

Das rückgeförderte Fluid wird zu Beginn der nächsten Portionsabgabe wieder verlustfrei zur Ausgabeöffnung gefördert. Dabei wird die Verunreinigung des entleerten Leitungsabschnitts 8 bzw. der wieder geförderten Folgeportion des Fluids vermieden.The recirculated fluid is conveyed again loss-free to the discharge opening at the beginning of the next portion delivery. In this case, the contamination of the emptied line section 8 and the re-promoted subsequent portion of the fluid is avoided.

Eine Möglichkeit sieht vor, dass die Ausgabeöffnung 9 geschlossen wird. Eine wesentlich einfachere und vor allem gegen die Ansiedelung von Bakterien wirksame Möglichkeit sieht vor, dass der Leitungsabschnitt 8, gegebenenfalls auch der von der Schlauchquetschpumpe 5 weiterführende Schlauch 4, aus einem antimikrobiell, bakterizid, fungizid od. dgl. wirksamen Kunststoff gefertigt ist. An der Innenfläche des Leitungsabschnittes 8 und des Schlauches 4 ist insbesondere eine Schicht vorgesehen, die ein Zeolithgitter mit eingebetteten Silberionen enthält. Auch nach einer längeren Pause wieder gefördertes Fluid kann nicht mit Verunreinigungen an den Innenflächen des leeren Leitungsabschnitts 8 in Berührung kommen, sodass auch bei möglichst keimfrei zu handhabenden Fluiden kein zu verwerfender Vorlauf an verunreinigtem Material abgegeben wird.One possibility provides that the discharge opening 9 is closed. A much simpler and especially against the colonization of bacteria effective option provides that the line section 8, possibly also of the peristaltic pump 5 continuing hose 4, from an antimicrobial, bactericidal, fungicidal od. The like. Effective plastic is made. On the inner surface of the line section 8 and the tube 4, in particular, a layer is provided which contains a zeolite grid with embedded silver ions. Even after a longer break again promoted fluid can not come into contact with impurities on the inner surfaces of the empty line section 8, so that even when possible germ-free to handle fluids no discardable flow of contaminated material is delivered.

Claims (4)

Verfahren zur möglichst verlustfreien Abgabe von Portionen eines Fluids aus einem Vorrat mittels eines Spenders, der einen Vorratsbehälter (23), einen eine Ausgabeöffnung (9) umfassenden Leitungsabschnitt (8) und eine zwischen dem Vorratsbehälter (23) und der Ausgabeöffnung (9) angeordnete Förderpumpe (5) aufweist, dadurch gekennzeichnet, dass nach Abschluss jedes Fördervorganges an der Ausgabeöffnung (9) anstehendes Fluid durch den Leitungsabschnitt (8) zurückgefördert wird, und dass einer Verunreinigung jeder Folgeportion des Fluids dadurch zumindest weitgehend vorgebeugt wird, dass das Fluid durch einen Leitungsabschnitt (8) gefördert wird, der aus einem antimikrobiell wirksamen Kunststoff gefertigt ist.A method for lossless delivery of portions of a fluid from a supply by means of a dispenser, the supply container (23), a discharge opening (9) comprising a line section (8) and between the reservoir (23) and the discharge opening (9) arranged feed pump (5), characterized in that at the completion of each delivery process at the discharge port (9) pending fluid is conveyed back through the line section (8), and that contamination of each sequence portion of the fluid is thereby at least largely prevented that the fluid through a line section (8), which is made of an antimicrobial plastic. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass für die Rückförderung des Fluids die Förderrichtung der Pumpe (5) umgekehrt wird.A method according to claim 1, characterized in that for the return conveyance of the fluid, the conveying direction of the pump (5) is reversed. Spender zur Verwendung im Verfahren nach Anspruch 1, mit einem ein Fluid enthaltenden, tauschbaren Vorratsbehälter (23), mit einer Ausgabeöffnung (9), und mit einer zwischen dem Vorratsbehälter (23) und der Ausgabeöffnung (9) angeordneten Förderpumpe (5), dadurch gekennzeichnet, dass die Förderpumpe (5) als Schlauchquetschpumpe mit umschaltbarer Förderrichtung ausgebildet und die Ausgabeöffnung (9) an einem Leitungsabschnitt (8) vorgesehen ist, der aus einem antimikrobiell wirksamen Kunststoff gefertigt ist.Dispenser for use in the method according to claim 1, containing a fluid, exchangeable storage container (23) having a dispensing opening (9), and with a between the reservoir (23) and the discharge opening arranged (9) feed pump (5), characterized in that the delivery pump (5) is designed as a peristaltic pump with a switchable delivery direction and the delivery opening (9) is provided on a line section (8) which is made of an antimicrobially active plastic. Spender nach Anspruch 3, dadurch gekennzeichnet, dass der Leitungsabschnitt (8) werkzeuglos lösbar am Spender angeordnet ist.Dispenser according to claim 3, characterized in that the line section (8) is arranged releasably without tools on the dispenser.
EP10014191.0A 2009-11-06 2010-11-02 Method and dispenser for releasing portions of a fluid Active EP2322066B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0176109A AT508916B1 (en) 2009-11-06 2009-11-06 DISPENSER FOR DELIVERING PORTIONS OF A FLUID

Publications (2)

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EP2322066A1 true EP2322066A1 (en) 2011-05-18
EP2322066B1 EP2322066B1 (en) 2015-10-21

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AT (1) AT508916B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021133721A1 (en) * 2021-12-17 2023-06-22 Toi Toi & Dixi Group Gmbh Sanitary cubicles, in particular toilet cubicles

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EP0838397A2 (en) 1996-10-18 1998-04-29 Ing. Erich Pfeiffer GmbH & Co. KG Fluid dispenser
US5781942A (en) 1989-07-12 1998-07-21 Sloan Valve Company Wash stations and method of operation
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WO1999049769A1 (en) * 1998-03-30 1999-10-07 Sprintvest Corporation N.V. Improved liquid dispenser for dispensing foam
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EP1491124A1 (en) 2003-06-26 2004-12-29 Q T S s.r.l. Dispenser for foamed detergents
DE202007010891U1 (en) 2007-08-03 2008-12-18 Rehau Ag + Co pipe
DE102007035063A1 (en) 2007-07-26 2009-01-29 Spiegelberg (Gmbh & Co.) Kg Process for the preparation of an antimicrobial plastic product
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US5781942A (en) 1989-07-12 1998-07-21 Sloan Valve Company Wash stations and method of operation
DE4344306A1 (en) 1992-12-24 1994-06-30 Theodor Dipl Ing Krall Plastic article, esp. tube, contg. metallic silver@
EP0771166A1 (en) 1994-07-18 1997-05-07 Cws International Ag Device for producing soap lather and use thereof
EP0861128A1 (en) 1995-11-17 1998-09-02 Ursatec Verpackung Gmbh Fluids dispenser designed to protect the contents from contamination
EP0838397A2 (en) 1996-10-18 1998-04-29 Ing. Erich Pfeiffer GmbH & Co. KG Fluid dispenser
EP0984715B1 (en) * 1998-03-30 2003-04-23 Deb IP Limited Improved liquid dispenser for dispensing foam
WO1999049769A1 (en) * 1998-03-30 1999-10-07 Sprintvest Corporation N.V. Improved liquid dispenser for dispensing foam
EP0984715A1 (en) 1998-03-30 2000-03-15 Sprintvest Corporation N.V. Improved liquid dispenser for dispensing foam
WO1999061164A1 (en) * 1998-05-26 1999-12-02 Rexam Sofab Aerosol dispenser for liquid products
EP1491124A1 (en) 2003-06-26 2004-12-29 Q T S s.r.l. Dispenser for foamed detergents
DE102007035063A1 (en) 2007-07-26 2009-01-29 Spiegelberg (Gmbh & Co.) Kg Process for the preparation of an antimicrobial plastic product
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DE102007043311A1 (en) 2007-09-12 2009-04-02 Trovotech Gmbh Composition with antimicrobial effect

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AT508916B1 (en) 2011-05-15
EP2322066B1 (en) 2015-10-21
AT508916A4 (en) 2011-05-15

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