EP1159913A1 - Tablet dosing device for a dishwasher - Google Patents

Tablet dosing device for a dishwasher Download PDF

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Publication number
EP1159913A1
EP1159913A1 EP00111756A EP00111756A EP1159913A1 EP 1159913 A1 EP1159913 A1 EP 1159913A1 EP 00111756 A EP00111756 A EP 00111756A EP 00111756 A EP00111756 A EP 00111756A EP 1159913 A1 EP1159913 A1 EP 1159913A1
Authority
EP
European Patent Office
Prior art keywords
tablets
transport
dosing device
storage container
dishwasher
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
EP00111756A
Other languages
German (de)
French (fr)
Other versions
EP1159913B1 (en
Inventor
Michael Preugschas
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.)
Chemische Fabrik Dr Weigert GmbH and Co
Original Assignee
Chemische Fabrik Dr Weigert GmbH and Co
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 Chemische Fabrik Dr Weigert GmbH and Co filed Critical Chemische Fabrik Dr Weigert GmbH and Co
Priority to EP00111756A priority Critical patent/EP1159913B1/en
Priority to AT00111756T priority patent/ATE273658T1/en
Priority to DE50007479T priority patent/DE50007479D1/en
Publication of EP1159913A1 publication Critical patent/EP1159913A1/en
Application granted granted Critical
Publication of EP1159913B1 publication Critical patent/EP1159913B1/en
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
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4463—Multi-dose dispensing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/04—Containers or packages with special means for dispensing contents for dispensing annular, disc-shaped, or spherical or like small articles, e.g. tablets or pills
    • B65D83/0409—Containers or packages with special means for dispensing contents for dispensing annular, disc-shaped, or spherical or like small articles, e.g. tablets or pills the dispensing means being adapted for delivering one article, or a single dose, upon each actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2583/00—Containers or packages with special means for dispensing contents
    • B65D2583/04—For dispensing annular, disc-shaped or spherical or like small articles or tablets
    • B65D2583/0472—For dispensing annular, disc-shaped or spherical or like small articles or tablets characterised by the dispensing action
    • B65D2583/0477—For dispensing annular, disc-shaped or spherical or like small articles or tablets characterised by the dispensing action the container is maintained in the same position during the dispensing of several successive articles or doses
    • B65D2583/049—One rotational action of a cylindrical, disc-like or sphere-like element around its own axis, e.g. step-by-step, reciprocating

Definitions

  • the invention relates to a metering device for dispensing Detergent tablets from a storage container into the utility room a dishwasher.
  • Dishwashing detergent for machine washing dishes and the like are in the prior art as a liquid, Powder and tablet available.
  • Especially commercial Dishwashers have a relatively high need for cleaning agents, which is a continuous replenishment of detergent makes necessary.
  • Liquid cleaners can be well stocked and be dosed, but their high weight and is disadvantageous Volume due to the required water content. Powder cleaner clump easily and are difficult to dose, because they are rinsed with water from a storage container have to.
  • a metering device of the type mentioned is out DE-A-196 20 088 known. It is not suitable for automatic Dosing of tablets with a higher detergent requirement, as he usually does in commercial dishwashers occurs.
  • the invention has for its object a metering device of the type mentioned at the beginning to create a reliable Dosing of detergent tablets enables and Dosage of larger amounts of detergent is suitable.
  • the invention solves this problem in that an essentially vapor - tight lock between the reservoir and Usable space is arranged that the reservoir for receiving a loose bed of tablets is formed, and that the lock is a transport device for active transport which has tablets.
  • dishwasher is within the scope of the invention to be widely understood and encompasses any device intended for mechanical Cleaning dishes or other objects suitable is.
  • it includes dishwashers for cleaning medical instruments and the like. It can is a so-called one-tank machine, in which all Cleaning and rinsing processes in succession in one Wash tank in which the dishes remain stationary.
  • the invention is also for belt dishwashers can be used where various cleaning, rinsing, and drying processes simultaneously in spatial succession Arranged areas or tanks take place that hold the dishes on a transport device such as a conveyor belt goes through.
  • cleaning tablets includes within the scope of the invention all moldings with a defined outer shape, the any ingredients that can be used for cleaning dishes contain.
  • the term is not limited to Tablets that contain the actual detergent, he can also, for example, tablets for use in rinse aid, for water softening or conditioning and the like include.
  • the storage container is the area of the metering device which contains the tablet supply. He will be on demand refilled.
  • a vapor-tight lock is provided between the storage container and the chute to the usable space (e.g. wash tank) of the dishwasher . Vapor-tight means within the scope of the invention that through this lock in the normal operation of the dishwasher moisture from the Usable space through the lock in the reservoir or not can penetrate at most to such an extent that the Tablets are not significantly dissolved, stick together, clump together or similar.
  • the exit of the Lock can also open directly into the usable space.
  • the storage container is for receiving a loose fill trained by tablets. This means that the tablets are randomly oriented in the pantry and not in of a given geometric arrangement.
  • the lock has a transport device for actively transporting it through through this lock.
  • Active transportation means that the tablets under the Influence of an external force to pass the vapor barrier.
  • the inventive design of the storage container for receiving a loose pile of tablets enables easy Also stock large amounts of tablets as well as a little elaborate refilling of the storage container. An elaborate one Magazine tablets are not required.
  • the order the vapor-tight lock between the reservoir and Usage space prevents the loose tablet filling from clumping or glued.
  • the active transportation of the Tablets through the lock reliably cause a Desired number of tablets added to the dishwasher can be.
  • a feed shaft is preferably provided through which the Tablets are fed sequentially to the transport device.
  • This feed shaft connects the storage container with the entry of the transport device and thus the lock.
  • It can preferably be a transport device act tapered channel whose dimensions in Area immediately in front of the transport device is preferred are such that he only has to pass a single tablet, preferably in a defined spatial position, allowed.
  • the feed shaft thus serves the tablets in a predetermined spatial orientation of the transport device feed.
  • the feed shaft is preferably designed so that the tablets at the entrance of the transport device with her Scope are lined up.
  • the tablets are fed from the storage container through the Feed shaft to the transport device can only done by gravity.
  • a conveyor device is preferred for active conveyance (under the influence of external forces) of tablets from the storage container into the feed shaft intended.
  • Such a conveyor facilitates the orderly slipping of tablets into the feed chute and prevents the formation of so-called tablet bridges in the Storage container, d. H. wedging the tablets in such a way that only under the influence of gravity slide on further tablets.
  • a conveyor the tablets without a feed shaft feed directly to the named transport device.
  • the conveying device can be, for example, as Screw conveyor or conveyor wheel can be formed. Together is these two embodiments that they are disordered tablets in the storage container during the conveying process can give a preferential orientation that the sliding in into the feed chute in the desired spatial Orientation made easier.
  • E.g. can distance, incline and Depth of the thread of a screw conveyor should be such that the above-mentioned disc-shaped tablets in approximately with its cylinder axis in the radial direction of the screw oriented in the thread and thus pre-oriented in the Feed chute (or directly in the transport device, if applicable) be promoted.
  • a device for loading the storage container with mechanical vibrations or the like be, for example a vibration or vibrating device, such as it is known to the person skilled in the art for avoidance or dissolution of powder bridges in powder silos.
  • the transport device is preferably to be carried out discrete transport operations, with each Transport process transported a predetermined number of tablets becomes.
  • it can have at least one transport chamber have, by means of the tablets from the reservoir side be transported to the usable space side of the lock. While the transport chamber can neither briefly with the storage container side still with the usable space side communicating with the lock. That way the transport device forms the lock at the same time, because it keeps the storage container from the usable space of the dishwasher watertight separates.
  • the transport device can have, for example, a cellular wheel, at least one transport chamber is arranged on its circumference is.
  • This cell wheel rotates.
  • the feed channel and usable space or Ejection chute arranged to the usable space.
  • Rotates an empty one Chamber past the feed channel it becomes under the influence of the Gravity and / or the external force of the conveyor with one or more tablets if necessary.
  • Rotates the filled one Chamber past the chute she empties the tablet preferably under the influence of gravity in the Usage space of the dishwasher.
  • the cell wheel rotates circumferentially, preferably sealingly a corresponding counter surface so that the cell wheel at the same time which essentially forms a vapor-tight lock.
  • a counting device for counting the Tablets supplied can be provided.
  • the counting mechanism can be connected to the transport device and count the revolutions of the cellular wheel, for example.
  • Malfunctions e.g. an empty container
  • the present invention also relates to a dishwasher with the invention described above Dosing device.
  • This dishwasher preferably has a collecting device for in the utility room transported tablets.
  • collecting means that the tablets transported into the utility room one predetermined by the arrangement of the collecting device Place ready for dissolution by the wash liquor become. This prevents tablets from being conveyed, for example Dishes fall, stay there and with the dishes together in a subsequent washing or rinsing tank be promoted.
  • the collecting device can, for example, as a from the dosing device according to the invention into the wash liquor reaching receiving tube be formed on his Has circumferential openings and so the entry of wash liquor allowed to dissolve the tablet or tablets.
  • a dishwasher 1 has a wash tank 2 which wash liquor therein is circulated by means of a pump 3 and via wash arms 4 with appropriate nozzles on the Sprayed dishes.
  • Dosing device 5 provided the tablets in a collecting tube 6 dosed, which is perforated on the circumference. In the collecting tube 6 tablets are in the wash liquor solved.
  • FIGs 2 and 3 show a first embodiment of a dosing device according to the invention.
  • a storage container 7 there are cleaning tablets 8.
  • a removable lid 9 enables refilling of the storage container.
  • the reservoir 7 tapers in its lower part to a feed shaft 10.
  • a screw conveyor 11 In the area of the transition between the storage containers 7 and feed shaft 10 is a screw conveyor 11 arranged.
  • the screw conveyor 11 is driven by a motor 12 and a gear arrangement indicated at 13 in rotated.
  • the electric motor 12 drives at the same time a cellular wheel 14 on its circumference two Transport chambers 15, each of which for receiving a Tablet is formed, as can be seen in particular in Figure 3 is.
  • the feed shaft opens at the circumference of the cellular wheel 10 and the chute 16.
  • the cell wheel 14 When the cell wheel 14 rotates, one falls Tablet from the feed shaft 10 in an empty transport chamber 15. The tablet is diametrically opposed to the one Side of the circumference of the cellular wheel 14 located Ejection chute 16 ejected and falls into the collecting tube 6 of the dishwasher 1.
  • the cellular wheel 14 forms at the same time the essentially vapor-tight lock, since it is the Feed shaft 10 and thus the storage container 7 on the one hand and the discharge chute facing the usable space of the wash cabinet 16 on the other hand, seals against one another essentially in a vapor-tight manner. If necessary, the outer circumference of the cellular wheel 14 and / or the inner circumference of the cavity in which the cellular wheel 14 runs, in addition to be provided with seals to seal the vapor ensure. However, it will often suffice the cellular wheel 14 with a small air gap against the surrounding To let cavity run.
  • FIGS. 4 and 5 show a second embodiment of the Invention shown.
  • the same reference numbers designate here corresponding components.
  • a conveyor wheel 17 is provided as a conveyor.
  • the tablets 8 also have a spatial preferred orientation, the tablets 8 slide into the feed shaft 10 in the spatial orientation shown in the figures facilitate.

Abstract

A dosing or metering-out device disperses purifier tablets (8) from a hopper (7) in a dishwasher's operating area. A vapor-sealed transfer canal (14) fits between the hopper and the operating area. The hopper can take a loose pile of tablets. The vapor-sealed transfer canal has a conveying device for actively moving the tablets through.

Description

Die Erfindung betrifft eine Dosiereinrichtung zur Abgabe von Reinigertabletten aus einem Vorratsbehälter in den Nutzraum einer Geschirrspülmaschine.The invention relates to a metering device for dispensing Detergent tablets from a storage container into the utility room a dishwasher.

Geschirrspülmittel für das maschinelle Reinigen von Geschirr und dergleichen stehen im Stand der Technik als Flüssigkeit, Pulver und Tablette zur Verfügung. Insbesondere gewerbliche Geschirrspülmaschinen haben einen verhältnismäßig hohen Reinigerbedarf, der ein fortlaufendes Nachdosieren von Reiniger erforderlich macht. Flüssigreiniger können gut bevorratet und dosiert werden, nachteilig ist jedoch ihr hohes Gewicht und Volumen aufgrund des erforderlichen Wasseranteils. Pulverreiniger verklumpen leicht und sind aufwendig zu dosieren, da sie aus einem Vorratsbehälter mit Wasser ausgespült werden müssen.Dishwashing detergent for machine washing dishes and the like are in the prior art as a liquid, Powder and tablet available. Especially commercial Dishwashers have a relatively high need for cleaning agents, which is a continuous replenishment of detergent makes necessary. Liquid cleaners can be well stocked and be dosed, but their high weight and is disadvantageous Volume due to the required water content. Powder cleaner clump easily and are difficult to dose, because they are rinsed with water from a storage container have to.

Eine Dosiereinrichtung der eingangs genannten Art ist aus DE-A-196 20 088 bekannt. Sie eignet sich nicht für das automatische Dosieren von Tabletten bei einem höheren Reinigerbedarf, wie er in der Regel in gewerblichen Geschirrspülmaschinen auftritt.A metering device of the type mentioned is out DE-A-196 20 088 known. It is not suitable for automatic Dosing of tablets with a higher detergent requirement, as he usually does in commercial dishwashers occurs.

Der Erfindung liegt die Aufgabe zugrunde, eine Dosiereinrichtung der eingangs genannten Art zu schaffen, die ein zuverlässiges Dosieren von Reinigertabletten ermöglicht und zur Dosierung größerer Reinigermengen geeignet ist. The invention has for its object a metering device of the type mentioned at the beginning to create a reliable Dosing of detergent tablets enables and Dosage of larger amounts of detergent is suitable.

Die Erfindung löst diese Aufgabe dadurch, daß eine im wesentlichen wrasendichte Schleuse zwischen Vorratsbehälter und Nutzraum angeordnet ist, daß der Vorratsbehälter zur Aufnahme einer losen Schüttung von Tabletten ausgebildet ist, und daß die Schleuse eine Transporteinrichtung zum aktiven Hindurchtransportieren der Tabletten aufweist.The invention solves this problem in that an essentially vapor - tight lock between the reservoir and Usable space is arranged that the reservoir for receiving a loose bed of tablets is formed, and that the lock is a transport device for active transport which has tablets.

Zunächst seien einige im Rahmen der Erfindung verwendete Begriffe erläutert.First of all, let us consider some of the terms used in the context of the invention explained.

Der Begriff Geschirrspülmaschine ist im Rahmen der Erfindung weit zu verstehen und umfaßt jede Vorrichtung, die zum maschinellen Reinigen von Geschirr oder anderen Gegenständen geeignet ist. Umfaßt sind insbesondere Spülmaschinen zum Reinigen medizinischer Instrumente und dergleichen. Es kann sich um eine sogenannte Eintank-Maschine handeln, bei der sämtliche Reinigungs- und Spülvorgänge nacheinander in einem einzigen Waschtank erfolgen, in dem das Geschirr stationär verbleibt. Die Erfindung ist jedoch ebenfalls für Bandspülmaschinen verwendbar, bei denen verschiedene Reinigungs-, Spül- und Trocknungsvorgänge gleichzeitig in räumlich hintereinander angeordneten Bereichen oder Tanks erfolgen, die das Geschirr auf einer Transporteinrichtung wie bspw. einem Transportband durchläuft.The term dishwasher is within the scope of the invention to be widely understood and encompasses any device intended for mechanical Cleaning dishes or other objects suitable is. In particular, it includes dishwashers for cleaning medical instruments and the like. It can is a so-called one-tank machine, in which all Cleaning and rinsing processes in succession in one Wash tank in which the dishes remain stationary. However, the invention is also for belt dishwashers can be used where various cleaning, rinsing, and drying processes simultaneously in spatial succession Arranged areas or tanks take place that hold the dishes on a transport device such as a conveyor belt goes through.

Der Begriff Reinigertabletten umfaßt im Rahmen der Erfindung alle Formkörper mit einer definierten äußeren Gestalt, die irgendwelche im Rahmen der Geschirreinigung verwendbaren Inhaltsstoffe enthalten. Der Begriff ist nicht beschränkt auf Tabletten, die das eigentliche Reinigungsmittel enthalten, er kann bspw. auch Tabletten zur Verwendung in Klarspülgängen, zur Wasserenthärtung oder -konditionierung und dergleichen umfassen.The term cleaning tablets includes within the scope of the invention all moldings with a defined outer shape, the any ingredients that can be used for cleaning dishes contain. The term is not limited to Tablets that contain the actual detergent, he can also, for example, tablets for use in rinse aid, for water softening or conditioning and the like include.

Der Vorratsbehälter ist derjenige Bereich der Dosiereinrichtung, der den Tablettenvorrat enthält. Er wird bedarfsweise nachgefüllt. Zwischen dem Vorratsbehälter und dem Auswurfschacht zum Nutzraum (bspw. Waschtank) der Geschirrspülmaschine ist eine wrasendichte Schleuse vorgesehen. Wrasendicht bedeutet im Rahmen der Erfindung, daß durch diese Schleuse beim üblichen Betrieb der Spülmaschine Feuchtigkeit aus dem Nutzraum durch die Schleuse in den Vorratsbehälter nicht oder allenfalls in einem solchen Umfang eindringen kann, daß die Tabletten nicht nennenswert angelöst werden, verkleben, verklumpen oder dergleichen. Zwischen der Schleuse und dem Nutzraum kann ein Auswurfschacht angeordnet sein, der Ausgang der Schleuse kann aber auch unmittelbar in den Nutzraum münden.The storage container is the area of the metering device which contains the tablet supply. He will be on demand refilled. Between the storage container and the chute to the usable space (e.g. wash tank) of the dishwasher a vapor-tight lock is provided. Vapor-tight means within the scope of the invention that through this lock in the normal operation of the dishwasher moisture from the Usable space through the lock in the reservoir or not can penetrate at most to such an extent that the Tablets are not significantly dissolved, stick together, clump together or similar. Between the lock and the utility room can be arranged an ejection chute, the exit of the Lock can also open directly into the usable space.

Der Vorratsbehälter ist zur Aufnahme einer losen Schüttung von Tabletten ausgebildet. Dies bedeutet, daß die Tabletten in dem Vorratsraum zufällig orientiert liegen und nicht in einer vorgegebenen geometrischen Anordnung magaziniert sind.The storage container is for receiving a loose fill trained by tablets. This means that the tablets are randomly oriented in the pantry and not in of a given geometric arrangement.

Die Schleuse weist eine Transporteinrichtung zum aktiven Hindurchtransportieren durch diese Schleuse auf. Aktives Hindurchtransportieren bedeutet, daß die Tabletten unter der Einwirkung einer Fremdkraft die Wrasensperre passieren.The lock has a transport device for actively transporting it through through this lock. Active transportation means that the tablets under the Influence of an external force to pass the vapor barrier.

Die erfindungsgemäße Ausbildung des Vorratsbehälters zur Aufnahme einer losen Schüttung von Tabletten ermöglicht ein einfaches Bevorraten auch großer Tablettenmengen sowie ein wenig aufwendiges Nachfüllen des Vorratsbehälters. Ein aufwendiges Magazinieren der Tabletten ist nicht erforderlich. Die Anordnung der wrasendichten Schleuse zwischen Vorratsbehälter und Nutzraum verhindert, daß die lose Tablettenschüttung verklumpt oder verklebt. Das aktive Hindurchtransportieren der Tabletten durch die Schleuse bewirkt, daß zuverlässig eine gewünschte Zahl von Tabletten der Geschirrspülmaschine zudosiert werden kann.The inventive design of the storage container for receiving a loose pile of tablets enables easy Also stock large amounts of tablets as well as a little elaborate refilling of the storage container. An elaborate one Magazine tablets are not required. The order the vapor-tight lock between the reservoir and Usage space prevents the loose tablet filling from clumping or glued. The active transportation of the Tablets through the lock reliably cause a Desired number of tablets added to the dishwasher can be.

Vorzugsweise ist ein Zufuhrschacht vorgesehen, durch den die Tabletten sequentiell der Transporteinrichtung zugeführt werden. Dieser Zufuhrschacht verbindet den Vorratsbehälter mit dem Eintritt der Transporteinrichtung und damit der Schleuse. Es kann sich vorzugsweise um einen sich zur Transporteinrichtung hin verjüngenden Kanal handeln, dessen Abmessungen im Bereich unmittelbar vor der Transporteinrichtung vorzugsweise so sind, daß er nur noch den Durchtritt einer einzigen Tablette, vorzugsweise in einer definierten räumlichen Lage, gestattet. Der Zufuhrschacht dient somit dazu, die Tabletten in einer vorgegebenen räumlichen Ausrichtung der Transporteinrichtung zuzuführen. Bei üblichen in etwa zylindrischen Tabletten, deren Durchmesser größer ist als deren Höhe, ist der Zufuhrschacht vorzugsweise so ausgebildet, daß die Tabletten am Eintritt der Transporteinrichtung in etwa mit ihrem Umfang aneinanderliegend aufgereiht sind.A feed shaft is preferably provided through which the Tablets are fed sequentially to the transport device. This feed shaft connects the storage container with the entry of the transport device and thus the lock. It can preferably be a transport device act tapered channel whose dimensions in Area immediately in front of the transport device is preferred are such that he only has to pass a single tablet, preferably in a defined spatial position, allowed. The feed shaft thus serves the tablets in a predetermined spatial orientation of the transport device feed. In the usual roughly cylindrical Tablets whose diameter is greater than their height the feed shaft is preferably designed so that the tablets at the entrance of the transport device with her Scope are lined up.

Die Zufuhr der Tabletten aus dem Vorratsbehälter durch den Zufuhrschacht zur Transporteinrichtung kann ausschließlich durch Schwerkraft erfolgen. Bevorzugt ist jedoch eine Fördereinrichtung zum aktiven Fördern (unter Einfluß von Fremdkraft) von Tabletten aus dem Vorratsbehälter in den Zufuhrschacht vorgesehen. Eine solche Fördereinrichtung erleichtert das geordnete Nachrutschen von Tabletten in den Zufuhrschacht und verhindert die Bildung sogenannter Tablettenbrücken im Vorratsbehälter, d. h. ein Verkeilen der Tabletten dergestalt, daß lediglich unter dem Einfluß der Schwerkraft keine weiteren Tabletten nachrutschen. Im Rahmen der Erfindung kann eine solche Fördereinrichtung die Tabletten auch ohne Zufuhrschacht unmittelbar der genannten Transporteinrichtung zuführen.The tablets are fed from the storage container through the Feed shaft to the transport device can only done by gravity. However, a conveyor device is preferred for active conveyance (under the influence of external forces) of tablets from the storage container into the feed shaft intended. Such a conveyor facilitates the orderly slipping of tablets into the feed chute and prevents the formation of so-called tablet bridges in the Storage container, d. H. wedging the tablets in such a way that only under the influence of gravity slide on further tablets. Within the scope of the invention such a conveyor the tablets without a feed shaft feed directly to the named transport device.

Die Fördereinrichtung kann im Rahmen der Erfindung bspw. als Schneckenförderer oder Förderrad ausgebildet sein. Gemeinsam ist diesen beiden Ausführungsformen, daß sie den ungeordnet im Vorratsbehälter befindlichen Tabletten bei dem Fördervorgang eine Vorzugsorientierung geben können, die das Hineingleiten in den Zufuhrschacht in der gewünschten räumlichen Orientierung erleichtert. Bspw. können Abstand, Steigung und Tiefe des Gewindes eines Schneckenförders so bemessen sein, daß die vorstehend genannten scheibenförmigen Tabletten in etwa mit ihrer Zylinderachse in Radialrichtung der Schnecke orientiert in das Gewinde gleiten und so vororientiert in den Zufuhrschacht (beziehungsweise ggf. unmittelbar in Transporteinrichtung) gefördert werden.In the context of the invention, the conveying device can be, for example, as Screw conveyor or conveyor wheel can be formed. Together is these two embodiments that they are disordered tablets in the storage container during the conveying process can give a preferential orientation that the sliding in into the feed chute in the desired spatial Orientation made easier. E.g. can distance, incline and Depth of the thread of a screw conveyor should be such that the above-mentioned disc-shaped tablets in approximately with its cylinder axis in the radial direction of the screw oriented in the thread and thus pre-oriented in the Feed chute (or directly in the transport device, if applicable) be promoted.

Anstelle von oder zusätzlich zu den genannten Fördereinrichtungen kann eine Einrichtung zum Beaufschlagen des Vorratsbehälters mit mechanischen Schwingungen oder ähnlichem vorhanden sein, bspw. eine Vibrations- oder Rütteleinrichtung, wie sie dem Fachmann bekannt ist zur Vermeidung bzw. Auflösung von Pulverbrücken in Pulversilos.Instead of or in addition to the mentioned funding institutions can be a device for loading the storage container with mechanical vibrations or the like be, for example a vibration or vibrating device, such as it is known to the person skilled in the art for avoidance or dissolution of powder bridges in powder silos.

Die Transporteinrichtung ist vorzugsweise zum Durchführen diskreter Transportvorgänge ausgebildet, wobei bei jedem Transportvorgang eine vorbestimmte Tablettenzahl transportiert wird. Sie kann bspw. wenigstens eine Transportkammer aufweisen, mittels der Tabletten von der Vorratsbehälterseite zur Nutzraumseite der Schleuse transportiert werden. Während des Transportvorgangs kann die Transportkammer kurzzeitig weder mit der Vorratsbehälterseite noch mit der Nutzraumseite der Schleuse in Verbindung stehen. Auf diese Art und Weise bildet die Transporteinrichtung gleichzeitig die Schleuse, da sie so den Vorratsbehälter vom Nutzraum der Spülmaschine wrasendicht trennt.The transport device is preferably to be carried out discrete transport operations, with each Transport process transported a predetermined number of tablets becomes. For example, it can have at least one transport chamber have, by means of the tablets from the reservoir side be transported to the usable space side of the lock. While the transport chamber can neither briefly with the storage container side still with the usable space side communicating with the lock. That way the transport device forms the lock at the same time, because it keeps the storage container from the usable space of the dishwasher watertight separates.

Die Transporteinrichtung kann bspw. ein Zellenrad aufweisen, an dessen Umfang wenigstens eine Transportkammer angeordnet ist. Dieses Zellenrad rotiert. An voneinander beabstandeten Stellen seines Umfangs sind Zufuhrkanal und Nutzraum bzw. Auswurfschacht zum Nutzraum angeordnet. Rotiert eine leere Kammer am Zufuhrkanal vorbei, wird sie unter dem Einfluß der Schwerkraft und/oder der Fremdkraft der Fördereinrichtung mit einer oder ggf. mehreren Tabletten gefüllt. Rotiert die gefüllte Kammer am Auswurfschacht vorbei, entleert sie die Tablette vorzugsweise unter dem Einfluß der Schwerkraft in den Nutzraum der Spülmaschine. Über den verbleibenden Teil des Umfangs rotiert das Zellenrad vorzugsweise abdichtend gegen eine entsprechende Gegenfläche, so daß das Zellenrad gleichzeitig die im wesentlichen wrasendichte Schleuse bildet.The transport device can have, for example, a cellular wheel, at least one transport chamber is arranged on its circumference is. This cell wheel rotates. At spaced apart Places of its scope are the feed channel and usable space or Ejection chute arranged to the usable space. Rotates an empty one Chamber past the feed channel, it becomes under the influence of the Gravity and / or the external force of the conveyor with one or more tablets if necessary. Rotates the filled one Chamber past the chute, she empties the tablet preferably under the influence of gravity in the Usage space of the dishwasher. Over the remaining part of the The cell wheel rotates circumferentially, preferably sealingly a corresponding counter surface so that the cell wheel at the same time which essentially forms a vapor-tight lock.

Erfindungsgemäß kann eine Zähleinrichtung zum Zählen der dem Nutzraum zugeführten Tabletten vorgesehen sein. Der Zählmechanismus kann mit der Transporteinrichtung verbunden sein und bspw. die Umdrehungen des Zellenrads zählen. Um jedoch Fehlfunktionen (bspw. ein Leerlaufen des Vorratsbehälters) rechtzeitig zu erkennen, ist es bevorzugt, eine separate Zähleinrichtung vorzusehen, die bspw. mittels eines kapazitiven Sensors oder eines anderen geeigneten Sensors die tatsächlich geförderten Tabletten zählt, vorzugsweise entweder unmittelbar vor oder nach der Schleuse.According to the invention, a counting device for counting the Tablets supplied can be provided. The counting mechanism can be connected to the transport device and count the revolutions of the cellular wheel, for example. However, to Malfunctions (e.g. an empty container) To recognize in time, it is preferred to have a separate one To provide a counting device, for example by means of a capacitive Sensor or another suitable sensor that actually subsidized tablets, preferably either immediately before or after the lock.

Gegenstand der vorliegenden Erfindung ist ferner eine Geschirrspülmaschine mit vorstehend beschrieben erfindungsgemäßen Dosiereinrichtung. Vorzugsweise besitzt diese Geschirrspülmaschine eine Auffangeinrichtung für in den Nutzraum transportierte Tabletten. Auffangen bedeutet in diesem Zusammenhang, daß die in den Nutzraum transportierten Tabletten an einer durch die Anordnung der Auffangeinrichtung vorbestimmten Stelle zur Auflösung durch die Waschflotte bereitgehalten werden. Dies verhindert, daß Tabletten bspw. auf hindurchgefördertes Geschirr fallen, dort liegenbleiben und mit dem Geschirr zusammen in einen nachfolgenden Wasch- oder Spültank gefördert werden. Die Auffangeinrichtung kann bspw. als ein von der erfindungsgemäßen Dosiereinrichtung in die Waschflotte hineinreichendes Auffangrohr ausgebildet sein, das an seinem Umfang Öffnungen aufweist und so den Eintritt von Waschflotte zur Auflösung der Tablette oder der Tabletten erlaubt.The present invention also relates to a dishwasher with the invention described above Dosing device. This dishwasher preferably has a collecting device for in the utility room transported tablets. In this context, collecting means that the tablets transported into the utility room one predetermined by the arrangement of the collecting device Place ready for dissolution by the wash liquor become. This prevents tablets from being conveyed, for example Dishes fall, stay there and with the dishes together in a subsequent washing or rinsing tank be promoted. The collecting device can, for example, as a from the dosing device according to the invention into the wash liquor reaching receiving tube be formed on his Has circumferential openings and so the entry of wash liquor allowed to dissolve the tablet or tablets.

Ausführungsbeispiele der Erfindung werden im folgenden anhand der Zeichnungen erläutert. Darin zeigen:

Fig. 1:
schematisch eine Geschirrspülmaschine mit einer erfindungsgemäßen Dosiereinrichtung;
Fig. 2:
eine erste Ausführungsform der erfindungsgemäßen Dosiereinrichtung in einem Schnitt in der Drehachse des Zellenrades;
Fig. 3:
die gleiche Ausführungsform in einem Schnitt senkrecht zur Drehachse des Zellenrades;
Fig. 4:
eine zweite Ausführungsform in einem Schnitt in der Drehachse des Zellenrades;
Fig. 5:
diese Ausführungsform in einem Schnitt senkrecht zur Drehachse des Zellenrades.
Embodiments of the invention are explained below with reference to the drawings. In it show:
Fig. 1:
schematically a dishwasher with a metering device according to the invention;
Fig. 2:
a first embodiment of the metering device according to the invention in a section in the axis of rotation of the cellular wheel;
Fig. 3:
the same embodiment in a section perpendicular to the axis of rotation of the cellular wheel;
Fig. 4:
a second embodiment in a section in the axis of rotation of the cellular wheel;
Fig. 5:
this embodiment in a section perpendicular to the axis of rotation of the cellular wheel.

Eine Geschirrspülmaschine 1 weist einen Waschtank 2 auf, die darin befindliche Waschflotte wird mittels einer Pumpe 3 umgewälzt und über Wascharme 4 mit entsprechenden Düsen auf das Geschirr gesprüht.A dishwasher 1 has a wash tank 2 which wash liquor therein is circulated by means of a pump 3 and via wash arms 4 with appropriate nozzles on the Sprayed dishes.

Zum Dosieren von Reinigertabletten ist eine erfindungsgemäße Dosiereinrichtung 5 vorgesehen, die Tabletten in ein Auffangrohr 6 dosiert, das am Umfang perforiert ist. In dem Auffangrohr 6 befindliche Tabletten werden durch die Waschflotte gelöst.For dosing detergent tablets is one according to the invention Dosing device 5 provided the tablets in a collecting tube 6 dosed, which is perforated on the circumference. In the collecting tube 6 tablets are in the wash liquor solved.

Die Figuren 2 und 3 zeigen eine erste Ausführungsform einer erfindungsgemäßen Dosiereinrichtung. In einem Vorratsbehälter 7 befinden sich Reinigertabletten 8. Ein abnehmbarer Deckel 9 ermöglicht das Nachfüllen des Vorratsbehälters. Der Vorratsbehälter 7 verjüngt sich in seinem unteren Teil zu einem Zufuhrschacht 10. Im Bereich des Übergangs zwischen Vorratsbehälter 7 und Zufuhrschacht 10 ist ein Schneckenförderer 11 angeordnet. Der Schneckenförderer 11 wird mittels eines Motors 12 und einer bei 13 angedeuteten Getriebeanordnung in eine Drehbewegung versetzt. Der Elektromotor 12 treibt gleichzeitig ein Zellenrad 14 an, das an seinem Umfang zwei Transportkammern 15 aufweist, von denen jede zur Aufnahme einer Tablette ausgebildet ist, wie insbesondere in Figur 3 erkennbar ist. Am Umfang des Zellenrades münden der Zufuhrschacht 10 sowie der Auswurfschacht 16.Figures 2 and 3 show a first embodiment of a dosing device according to the invention. In a storage container 7 there are cleaning tablets 8. A removable lid 9 enables refilling of the storage container. The reservoir 7 tapers in its lower part to a feed shaft 10. In the area of the transition between the storage containers 7 and feed shaft 10 is a screw conveyor 11 arranged. The screw conveyor 11 is driven by a motor 12 and a gear arrangement indicated at 13 in rotated. The electric motor 12 drives at the same time a cellular wheel 14 on its circumference two Transport chambers 15, each of which for receiving a Tablet is formed, as can be seen in particular in Figure 3 is. The feed shaft opens at the circumference of the cellular wheel 10 and the chute 16.

Beim Betrieb der Dosiereinrichtung werden im Vorratsbehälter 7 befindliche Tabletten 8 zunächst vom Schneckenförderer 11 erfaßt. Wie in Figur 2 zu erkennen ist, sind Gewindesteigung, -tiefe und -abstand des Schneckenförderers 11 so angepaßt, daß die Tabletten durch den Schneckenförderer eine räumliche Vorzugsorientierung erfahren, bei der sie mit ihrer Zylinderachse etwa in Radialrichtung der Schnecke weisen. Mit dieser räumlichen Orientierung werden sie dem Zufuhrschacht 10 zugeführt und darin hintereinander aufgereiht, wie in den Figuren 2 und 3 zu erkennen.When the dosing device is operating, it is in the storage container 7 tablets 8 first from the screw conveyor 11 detected. As can be seen in Figure 2, thread pitch, -depth and spacing of the screw conveyor 11 adjusted so that the tablets by the screw conveyor a spatial Experience preferential orientation, with which they with their cylinder axis point approximately in the radial direction of the screw. With this they are fed to the feed shaft 10 in spatial orientation and lined up in a row, as in the figures 2 and 3 can be seen.

Bei der Drehbewegung des Zellenrades 14 fällt jeweils eine Tablette aus dem Zufuhrschacht 10 in eine leere Transportkammer 15. Die Tablette wird durch den diametral an der gegenüberliegenden Seite des Umfangs des Zellenrades 14 befindlichen Auswurfschacht 16 ausgeworfen und fällt in das Auffangrohr 6 der Spülmaschine 1. Das Zellenrad 14 bildet gleichzeitig die im wesentlichen wrasendichte Schleuse, da es den Zufuhrschacht 10 und damit den Vorratsbehälter 7 einerseits und den den Nutzraum der Spülraum zugewandten Auswurfschacht 16 andererseits im wesentlichen wrasendicht gegeneinander abdichtet. Bei Bedarf kann der Außenumfang des Zellenrades 14 und/oder der Innenumfang des Hohlraumes, in dem das Zellenrad 14 läuft, zusätzlich mit Dichtungen versehen sein, um Wrasendichtigkeit sicherzustellen. Häufig wird es jedoch ausreichen, das Zellenrad 14 mit kleinem Luftspalt gegen den umgebenden Hohlraum laufen zu lassen. When the cell wheel 14 rotates, one falls Tablet from the feed shaft 10 in an empty transport chamber 15. The tablet is diametrically opposed to the one Side of the circumference of the cellular wheel 14 located Ejection chute 16 ejected and falls into the collecting tube 6 of the dishwasher 1. The cellular wheel 14 forms at the same time the essentially vapor-tight lock, since it is the Feed shaft 10 and thus the storage container 7 on the one hand and the discharge chute facing the usable space of the wash cabinet 16 on the other hand, seals against one another essentially in a vapor-tight manner. If necessary, the outer circumference of the cellular wheel 14 and / or the inner circumference of the cavity in which the cellular wheel 14 runs, in addition to be provided with seals to seal the vapor ensure. However, it will often suffice the cellular wheel 14 with a small air gap against the surrounding To let cavity run.

In den Figuren 4 und 5 ist eine zweite Ausführungsform der Erfindung dargestellt. Gleiche Bezugsziffern bezeichnen hier entsprechende Bauteile.FIGS. 4 and 5 show a second embodiment of the Invention shown. The same reference numbers designate here corresponding components.

Im Unterschied zur Ausführungsform der Figuren 2 und 3 ist hier als Fördereinrichtung ein Förderrad 17 vorgesehen. Wie in den Figuren erkennbar ist, weist eine Stirnseite des Förderrades Ausnehmungen auf, die mit im Vorratsbehälter 7 befindlichen Tabletten kraftschlüssig zusammenwirken und diese auf den Zufuhrschacht 10 zufördern. Diese Ausnehmungen verleihen den Tabletten 8 ferner eine räumliche Vorzugsorientierung, die ein Hineingleiten der Tabletten 8 in den Zufuhrschacht 10 in der in den Figuren gezeigten räumlichen Orientierung erleichtern.In contrast to the embodiment of Figures 2 and 3 here a conveyor wheel 17 is provided as a conveyor. How can be seen in the figures, has an end face of the feed wheel Recesses on the located in the reservoir 7 Tablets interact positively and these feed onto the feed shaft 10. Give these recesses the tablets 8 also have a spatial preferred orientation, the tablets 8 slide into the feed shaft 10 in the spatial orientation shown in the figures facilitate.

Claims (13)

Dosiereinrichtung zur Abgabe von Reinigertabletten (8) aus einem Vorratsbehälter (7) in den Nutzraum einer Geschirrspülmaschine (1), dadurch gekennzeichnet, daß eine im wesentlichen wrasendichte Schleuse (14, 15) zwischen Vorratsbehälter (7) und Nutzraum angeordnet ist, daß der Vorratsbehälter (7) zur Aufnahme einer losen Schüttung von Tabletten (8) ausgebildet ist, und daß die Schleuse eine Transporteinrichtung (14, 15) zum aktiven Hindurchtransportieren der Tabletten aufweist.Dosing device for dispensing detergent tablets (8) from a storage container (7) into the useful space of a dishwasher (1), characterized in that an essentially vapor-tight lock (14, 15) is arranged between the storage container (7) and the useful space, that the storage container (7) is designed to receive a loose bed of tablets (8), and that the lock has a transport device (14, 15) for actively transporting the tablets through. Dosiereinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein Zufuhrschacht (10) vorgesehen ist, durch den die Tabletten (8) sequentiell der Transporteinrichtung (14, 15) zugeführt werden.Dosing device according to claim 1, characterized in that a feed shaft (10) is provided, through which the tablets (8) are fed sequentially to the transport device (14, 15). Dosiereinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie zusätzlich eine Fördereinrichtung (11, 17) zum aktiven Fördern von Tabletten (8) aus dem Vorratsbehälter (7) in den Zufuhrschacht (10) aufweist.Dosing device according to claim 2, characterized in that it additionally has a conveying device (11, 17) for actively conveying tablets (8) from the storage container (7) into the feed shaft (10). Dosiereinrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Fördereinrichtung als Schneckenförderer (11) ausgebildet ist.Dosing device according to claim 3, characterized in that the conveying device is designed as a screw conveyor (11). Dosiereinrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Fördereinrichtung als Förderrad (17) ausgebildet ist.Dosing device according to claim 3, characterized in that the conveying device is designed as a conveying wheel (17). Dosiereinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Transporteinrichtung (14, 15) zum Durchführen diskreter Transportvorgänge ausgebildet ist, wobei bei jedem Transportvorgang eine vorbestimmte Tablettenzahl transportiert wird.Dosing device according to one of Claims 1 to 5, characterized in that the transport device (14, 15) is designed to carry out discrete transport processes, a predetermined number of tablets being transported during each transport process. Dosiereinrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Transporteinrichtung wenigstens eine Transportkammer (15) aufweist, mittels der Tabletten (8) von der Vorratsbehälterseite zur Nutzraumseite der Schleuse transportiert werden.Dosing device according to claim 6, characterized in that the transport device has at least one transport chamber (15) by means of which tablets (8) are transported from the storage container side to the usable space side of the lock. Dosiereinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Transporteinrichtung ein Zellenrad (14) aufweist, an dessen Umfang wenigstens eine Transportkammer (15) angeordnet ist.Dosing device according to claim 7, characterized in that the transport device has a cellular wheel (14), on the circumference of which at least one transport chamber (15) is arranged. Dosiereinrichtung nach Anspruch 8, dadurch gekennzeichnet, daß das Zellenrad (14) gleichzeitig die Schleuse bildet.Dosing device according to claim 8, characterized in that the cellular wheel (14) simultaneously forms the lock. Dosiereinrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß eine Zähleinrichtung zum Zählen der dem Nutzraum zugeführten Tabletten (8) vorgesehen ist.Dosing device according to one of claims 1 to 9, characterized in that a counting device is provided for counting the tablets (8) supplied to the useful space. Dosiereinrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Zähleinrichtung einen kapazitiven Sensor aufweist.Dosing device according to claim 10, characterized in that the counting device has a capacitive sensor. Geschirrspülmaschine, dadurch gekennzeichnet, daß sie eine Dosiereinrichtung nach einem der Ansprüche 1 bis 11 aufweist. Dishwasher, characterized in that it has a metering device according to one of claims 1 to 11. Geschirrspülmaschine nach Anspruch 12, dadurch gekennzeichnet, daß sie eine Auffangeinrichtung (6) für in den Nutzraum transportierte Tabletten (8) aufweist.Dishwasher according to claim 12, characterized in that it has a collecting device (6) for tablets (8) transported into the usable space.
EP00111756A 2000-06-02 2000-06-02 Tablet dosing device for a dishwasher Expired - Lifetime EP1159913B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00111756A EP1159913B1 (en) 2000-06-02 2000-06-02 Tablet dosing device for a dishwasher
AT00111756T ATE273658T1 (en) 2000-06-02 2000-06-02 DOSING DEVICE FOR DISHWASHER DETERGENT TABLETS
DE50007479T DE50007479D1 (en) 2000-06-02 2000-06-02 Dosing device for dishwasher tablets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00111756A EP1159913B1 (en) 2000-06-02 2000-06-02 Tablet dosing device for a dishwasher

Publications (2)

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EP1159913A1 true EP1159913A1 (en) 2001-12-05
EP1159913B1 EP1159913B1 (en) 2004-08-18

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AT (1) ATE273658T1 (en)
DE (1) DE50007479D1 (en)

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WO2004098371A3 (en) * 2003-05-05 2004-12-23 Ecolab Inc System for dispensing an active ingredient using a dispensable tablet, dispensable tablet and container for holding such dispensable tablets
WO2005020783A1 (en) * 2003-09-02 2005-03-10 Ecolab Inc. Distributable container and system and method using distributable container
WO2005122860A1 (en) * 2004-06-08 2005-12-29 Ecolab Inc. Tablet dispenser with isolated delivery sensor
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ATE273658T1 (en) 2004-09-15
EP1159913B1 (en) 2004-08-18
DE50007479D1 (en) 2004-09-23

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