EP0981291A2 - Method and metering device for operating a household dishwasher - Google Patents

Method and metering device for operating a household dishwasher

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Publication number
EP0981291A2
EP0981291A2 EP98934744A EP98934744A EP0981291A2 EP 0981291 A2 EP0981291 A2 EP 0981291A2 EP 98934744 A EP98934744 A EP 98934744A EP 98934744 A EP98934744 A EP 98934744A EP 0981291 A2 EP0981291 A2 EP 0981291A2
Authority
EP
European Patent Office
Prior art keywords
dosing
rinse aid
chamber
volume
metering
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
EP98934744A
Other languages
German (de)
French (fr)
Other versions
EP0981291B1 (en
Inventor
Harald Schrott
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.)
Aweco Appliance Systems GmbH and Co KG
Original Assignee
Aweco Kunststofftechnik Geratebau & Co KG GmbH
AWECO Kunststofftechnik Geraetebau GmbH and Co KG
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 Aweco Kunststofftechnik Geratebau & Co KG GmbH, AWECO Kunststofftechnik Geraetebau GmbH and Co KG filed Critical Aweco Kunststofftechnik Geratebau & Co KG GmbH
Publication of EP0981291A2 publication Critical patent/EP0981291A2/en
Application granted granted Critical
Publication of EP0981291B1 publication Critical patent/EP0981291B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/44Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4418Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0055Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration

Definitions

  • the invention relates to a method for operating a household dishwasher according to the preamble of claim 1 and a metering device suitable for carrying out this method.
  • a small dosing chamber is provided, which is also called a scooping chamber, because it fills from a larger storage vessel by pivoting the device through 90 °.
  • the dosing device is installed in the loading door of the machine, with the result that when the door is opened, ie after the program has run, the dosing chamber is filled.
  • a valve pin which closes an outlet opening of the metering chamber, is actuated by an actuator, e.g. B. a solenoid, so that the entire content of the Dosing chamber can leak into the wash cabinet.
  • the volume of the metering chamber and thus the metered amount is determined in these devices by means of a displacer, which can be more or less protrude into the Dosierka mer.
  • the invention is based on the object, based on the circumstances described, to further improve the washing results or, with equally good results, to reduce water consumption.
  • the method can be developed in two variants, the practical use of which depends on the control technology used in the dishwasher.
  • the rinse aid that is entered within a certain program section is composed of a selectable number of quanta of equal size that are metered in individual successive metering processes.
  • a metering chamber that is unchanged in terms of volume, the valve arrangement of which closes the inlet and opens the outlet when actuated, runs empty during each metering process and thus delivers the same quantity each time.
  • Such a multiple dosing device is suitable for the modern electronically controlled dishwashers, in which it is easily possible to determine the number of control pulses in the individual program sections as desired, and possibly also take other parameters such as the type and amount of the dishwasher, water hardness, etc. into account. Suitable sensors can be provided for the specifications.
  • a metering device which is characterized in that the device for entering a rinse aid has a storage container, an intermediate store and a metering chamber, that a line connection is provided from the intermediate store to the metering chamber and the volume of the intermediate store Is several times the dosing chamber volume and that a refill connection is provided from the storage container to the intermediate storage.
  • the buffer In practice, the buffer must be sized so that it can hold the maximum number of dosing guant required in the entire washing program.
  • such a multiple dosing device as the known dosing devices according to the scoop chamber principle has the basic advantage that if the valve pin does not leak, the entire rinse aid supply of, for example, 100 or 200 ml can leak, but at most the few milliliters of the buffer. Large quantities of rinse aid in a dishwasher have the serious consequence that foam is produced in uncontrolled quantities, which comes out of the machine and causes damage.
  • the intermediate store is expediently designed as a scooping chamber which, as is known per se, is filled by pivoting the metering device, e.g. by opening the loading door when the dosing device is installed in it.
  • a dosing device which has an unchangeable rinse aid dosing chamber is possible in that the volume of the intermediate store can be changed.
  • Such a device can be used to add rinse aid only in the last, the so-called rinse cycle, the dosing also taking place in individual quanta, but the total amount is ultimately determined by the volume of the buffer store.
  • the timer gives e.g. always 6 control pulses. However, it may be the case that the buffer is empty after the third control pulse and the metering valve then works three times empty.
  • the invention is to be seen under the stipulation that a multiple dosing device of the type described above in a combined dosing device is integrated.
  • Combined dosing devices were created under the constraint of rationally manufacturing and assembling and are included in almost all household dishwashers on the market. They include a device for entering a cleaning agent, which is usually used in powder form, and a device for entering a liquid rinse aid into the wash cabinet, it being known to operate both devices with the same actuator, in particular with a lifting magnet or one Bimetal actuator. A distinction is made by the type of electrical signal or in another way whether the detergent dispenser or the rinse aid dispenser should be actuated.
  • the known combined dosing devices are designed so that first the detergent dispenser and then the rinse aid dosing device is actuated. This corresponds to the natural program flow and is an important prerequisite for the conversion of the known single-dose devices into multiple-dose devices proposed by the invention. Once the detergent dispenser is triggered, there is nothing standing in the way of triggering the rinse aid dispenser several times.
  • An intermediate storage 3 which is designed as a scooping chamber, is attached to a storage container 1, which has a filling opening with a lid 2.
  • the partition has an opening 4 at the top. If the entire device, which is installed in this position in a closed loading door, is swiveled 90 ° to the left when the door is opened, the buffer store 3 fills up.
  • the intermediate store is connected via a line 5 to a metering chamber 6, in which a valve tappet 7 moves upward from its illustrated rest position upon a control pulse. The contents of the dosing chamber run out.
  • the required ventilation lines are not shown for the sake of simplicity.
  • the volume of the metering chamber 7 can be changed by connecting a cylinder to the metering chamber in which an actuating piston 8 can be moved.
  • the volume of the intermediate store> 3 can also be adjustable by means of an immersion body 9 which, depending on the setting, protrudes more or less far into the intermediate store.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

The invention relates to a method for operating a household dishwasher, said dishwasher being equipped with a programme selection device and a combined device for adding a detergent and a clear rinse agent to the washing area. The aim of the invention is to improve the cleaning effect. To this end, the clear rinse agent is added not only once during the last wash cycle, but on several occasions at various times during the wash programme. Each of these processes is characterised by an adjustable number of equal quantities or a non-adjustable number of variable quantities of a clear rinse agent. A metering device for carrying out the inventive method comprises a reservoir (1), a temporary storage unit (3) and a metering chamber (6). Both the temporary storage unit (3) and the metering chamber (6) can be configured with an adjustable volume.

Description

"Verfahren und Dosiervorrichtung zum Betrieb einer Haushalts-Geschirrspülmaschine""Method and dosing device for operating a household dishwasher"
Die Erfindung betrifft ein Verfahren zum Betrieb einer Haushalts-Geschirrspülmaschine nach dem Gattungsbegriff des Patentanspruchs 1 sowie eine zur Durchführung dieses Verfahrens geeignete Dosiervorrichtung.The invention relates to a method for operating a household dishwasher according to the preamble of claim 1 and a metering device suitable for carrying out this method.
Bei Haushalts-Geschirrspülmaschinen ist es seit vielen Jahren bekannt, während des Programmablaufs einmal ein Reinigungsmittel zuzugeben und am Ende des Programmablaufs im Klarspül-Programmabschnitt ein Klarspülmittel zuzugeben, damit das Spülwasser tropf rei vom Geschirr abläuft, keine Kalkflecken zurück bleiben und das Geschirr schon glänzt.In household dishwashers it has been known for many years to add a detergent during the program and to add a rinse aid at the end of the program in the rinse aid section so that the rinsing water runs off the dishes without dripping, no lime stains remain and the dishes are already shiny.
Die einmalige Klarspülmittelzugäbe hat bei den meisten Herstellern zur Entwicklung eines Typs einer Klarspülmittel- Dosiervorrichtung geführt, der wie folgt zu beschreiben ist. Es ist eine kleine Dosierkammer vorgesehen, die auch Schöpfkammer genannt wird, weil sie sich durch Verschwenken der Vorrichtung um 90° aus einem größeren Vorratsgefäß füllt. Die Dosiervorrichtung ist zu diesem Zweck in der Beschickungstür der Maschine eingebaut, was zur Folge hat, daß beim Öffnen der Tür, d. h. nach dem Programmablauf, die Dosierkammer gefüllt wird. Ein Ventilstift, der eine AuslaufÖffnung der Dosierkammer verschließt, wird im gewünschten Augenblick von einem Aktuator, z. B. einem Hubmagnet, angehoben, so daß der gesamte Inhalt der Dosierkammer in den Spülraum auslaufen kann. Das Volumen der Dosierkammer und damit die Dosiermenge wird bei diesen Vorrichtungen mittels eines Verdrängungskörpers bestimmt, den man mehr oder weniger weit in die Dosierka mer hineinragen läßt.The unique rinse aid addition has led most manufacturers to develop a type of rinse aid dispenser that can be described as follows. A small dosing chamber is provided, which is also called a scooping chamber, because it fills from a larger storage vessel by pivoting the device through 90 °. For this purpose, the dosing device is installed in the loading door of the machine, with the result that when the door is opened, ie after the program has run, the dosing chamber is filled. A valve pin, which closes an outlet opening of the metering chamber, is actuated by an actuator, e.g. B. a solenoid, so that the entire content of the Dosing chamber can leak into the wash cabinet. The volume of the metering chamber and thus the metered amount is determined in these devices by means of a displacer, which can be more or less protrude into the Dosierka mer.
Der Erfindung liegt die Aufgabe zugrunde, ausgehend von den geschilderten Gegebenheiten, die Spülergebnisse weiter zu verbessern bzw. bei gleich guten Ergebnissen den Wasserverbrauch zu senken.The invention is based on the object, based on the circumstances described, to further improve the washing results or, with equally good results, to reduce water consumption.
Erfindungsgexnäß wird dies mit der im Anspruch 1 gekennzeichneten Maßnahme erreicht. Ihr liegt die Erkenntnis zugrunde, daß in den Reinigungs- bzw. Zwischenspülgängen ein Teil der Schmutzfracht in den Tropfen am Geschirr hängen bleibt und so von einer Flotte auf die nächste übertragen wird. Dem kann dadurch entgegengewirkt werden, daß am Ende dieser einzelnen im Rahmen des Gesamtprogramms aufeinanderfolgenden Programmabschnitte jeweils eine kleine Dosis Klarspülmitte1 zugegeben wird, so daß die Spülflüssigkeit und die darin enthaltenen Speisereste besser ablaufen und dadurch vollständiger abgepumpt werden können.This is achieved according to the invention with the measure characterized in claim 1. It is based on the knowledge that in the cleaning or intermediate rinse cycles a part of the dirt load gets stuck in the drops on the dishes and is thus transferred from one fleet to the next. This can be counteracted by adding a small dose of rinse aid 1 at the end of each of these individual program sections in the course of the overall program, so that the rinsing liquid and the food residues contained therein run off better and can thus be pumped out more completely.
Das Verfahren läßt sich in zwei Varianten weiterbilden, wobei der praktische Einsatz von der bei der Spülmaschine verwendeten Steuertechnologie abhängt. Zum einen wird vorgeschlagen, daß die Klarspülmittelgabe, die innerhalb eines bestimmten Programmabschnitts eingegeben wird, sich aus einer wählbaren Anzahl gleich großer Quanten zusammensetzt, die in einzelnen aufeinanderfolgenden Dosiervorgängen dosiert werden.The method can be developed in two variants, the practical use of which depends on the control technology used in the dishwasher. On the one hand, it is proposed that the rinse aid that is entered within a certain program section is composed of a selectable number of quanta of equal size that are metered in individual successive metering processes.
Eine hinsichtlich ihres Volumens unveränderliche Dosierkammer, deren Ventilanordnung bei Betätigung den Zulauf schließt und den Auslauf öffnet, läuft bei jedem Dosiervorgang leer und liefert so jedesmal das gleiche Quantum. Eine solche Mehrmaldosiervorrichtung eignet sich für die modernen elektronisch gesteuerten Geschirrspülmaschinen, bei denen es leicht möglich ist, die Zahl der Steuerimpulse bei den einzelnen Programmabschnitten beliebig festzulegen und dabei möglicherweise auch andere Parameter, wie Beladungsart und Beladungsmenge der Spülmaschine, Wasserhärte u.s.w. zu berücksichtigen. Für die Vorgaben können geeignete Sensoren vorgesehen sein.A metering chamber that is unchanged in terms of volume, the valve arrangement of which closes the inlet and opens the outlet when actuated, runs empty during each metering process and thus delivers the same quantity each time. Such a multiple dosing device is suitable for the modern electronically controlled dishwashers, in which it is easily possible to determine the number of control pulses in the individual program sections as desired, and possibly also take other parameters such as the type and amount of the dishwasher, water hardness, etc. into account. Suitable sensors can be provided for the specifications.
Bei Geschirrspülmaschinen mit mechanischen Schaltwerken (Timern) ist es auch möglich, innerhalb der einzelnen Programmabschnitte mehrere aufeinanderfolgende Steuerimpulse zur Verfügung zu stellen. Die Anzahl dieser Steuerimpulse ist aber nicht variabel. Deshalb wird vorgeschlagen, daß die Klarspülmittelgabe, die innerhalb eines bestimmten Programmabschnitts eingegeben wird, sich aus einer unveränderlichen Anzahl einstellbar großer Quanten zusammensetzt, die in einzelnen aufeinanderfolgenden Dosiervorgängen dosiert werden. Diese Verfahrensvariante erfordert also eine variable Dosierkammer.In dishwashers with mechanical switching mechanisms (timers), it is also possible to provide several successive control pulses within the individual program sections. However, the number of these control pulses is not variable. It is therefore proposed that the rinse aid that is entered within a certain program section is composed of an invariable number of adjustable large quanta that are dosed in individual successive dosing processes. This process variant therefore requires a variable dosing chamber.
Zur Durchführung des im Anspruch 1 bezeichneten Betriebsverfahrens wird eine Dosiervorrichtung vorgeschlagen, die sich dadurch auszeichnet, daß die Vorrichtung zum Eingeben eines Klarspülmittels einen Vorratsbehälter, eine Zwischenspeicher und eine Dosierkammer aufweist, daß eine Leitungsverbindung vom Zwischenspeicher zur Dosierkammer vorgesehen ist und das Volumen des Zwischenspeichers ein Mehrfaches des Dosierkammervolumens beträgt und daß eine -Nachfüllverbindung vom Vorratsbehälter zum Zwischenspeicher vorgesehen ist. Praktisch muß der Zwischenspeicher so groß bemessen sein, daß er die im gesamten Spülprogramm maximal erforderliche Anzahl Dosierguanten aufnehmen kann.To carry out the operating method referred to in claim 1, a metering device is proposed which is characterized in that the device for entering a rinse aid has a storage container, an intermediate store and a metering chamber, that a line connection is provided from the intermediate store to the metering chamber and the volume of the intermediate store Is several times the dosing chamber volume and that a refill connection is provided from the storage container to the intermediate storage. In practice, the buffer must be sized so that it can hold the maximum number of dosing guant required in the entire washing program.
Damit hat eine solche Mehrmaldosiervorrichtung wie die bekannten Dosiervorrichtungen nach dem Schöpfkammerprinzip den grundsätzlichen Vorteil, daß bei einer Undichtigkeit des Ventilstifts nicht der ganze Klarspülmittelvorrat von z.B. 100 oder 200 ml auslaufen kann, sondern allenfalls die wenigen Milliliter des Zwischenspeichers. Große Mengen Klarspülmittel in einer Spülmaschine haben die schwerwiegende Folge, daß Schaum in unkontrollierten Mengen entsteht, der aus der Maschine austritt und Schäden verursacht.Thus, such a multiple dosing device as the known dosing devices according to the scoop chamber principle has the basic advantage that if the valve pin does not leak, the entire rinse aid supply of, for example, 100 or 200 ml can leak, but at most the few milliliters of the buffer. Large quantities of rinse aid in a dishwasher have the serious consequence that foam is produced in uncontrolled quantities, which comes out of the machine and causes damage.
Zweckmäßigerweise wird der Zwischenspeicher als Schöpfkammer ausgebildet, die wie an sich bekannt durch Schwenken der Dosiervorrichtung gefüllt wird, z.B. durch Öffnen der Beschickungstür, wenn die Dosiervorrichtung in diese eingebaut ist.The intermediate store is expediently designed as a scooping chamber which, as is known per se, is filled by pivoting the metering device, e.g. by opening the loading door when the dosing device is installed in it.
Da die Rationalisierung bei der Herstellung große Stückzahlen verlangt, kommt der Einsatzmöglichkeit eines kombinierten Dosiergeräts bei den verschiedensten Geschirrspülmaschinen große Bedeutung zu. Wie erwähnt genügt für eine Geschirrspülmaschine mit elektronischer Steuerung eine einfache hinsichtlich ihres Volumens unveränderliche Dosierkammer. Um dasselbe Dosiergerät auch bei Maschinen mit meschnischem Timer einsetzen zu könne, wird vorgeschlagen, daß die Dosierkammer ein veränderbares Volumen hat.Since the rationalization in production requires large quantities, the use of a combined dosing device is of great importance in a wide variety of dishwashers. As mentioned, for a dishwasher with electronic control, a simple metering chamber that is unchangeable in terms of volume is sufficient. In order to be able to use the same dosing device in machines with a mechanical timer, it is proposed that the dosing chamber have a variable volume.
Schließlich ist ein Mehrfacheinsatz eines Dosiergeräts, das eine unveränderliche Klarspülmittel-Dosierkammer hat, dadurch möglich, daß das Volumen des Zwischenspeichers veränderbar ist. Ein soches Gerät kann dazu verwendet werden, Klarspülmittel nur beim letzten, dem sogenannten Klarspülgang, zuzugeben, wobei die Dosierung zwar auch in einzelnen Quanten erfolgt, aber die Gesamtmenge letzlich durch das Volumen des Zwischenspeichers bestimmt wird. Der Timer gibt z.B. immer 6 Steuerimpulse ab. Es kann aber sein, daß bei entsprechender Einstellung der Zwischenspeicher schon nach dem dritten Steuerimpuls leer ist und das Dosierventil anschließend noch dreimal leer arbeitet.Finally, multiple use of a dosing device which has an unchangeable rinse aid dosing chamber is possible in that the volume of the intermediate store can be changed. Such a device can be used to add rinse aid only in the last, the so-called rinse cycle, the dosing also taking place in individual quanta, but the total amount is ultimately determined by the volume of the buffer store. The timer gives e.g. always 6 control pulses. However, it may be the case that the buffer is empty after the third control pulse and the metering valve then works three times empty.
Die Erfindung ist unter der Vorgabe zu sehen, daß eine Mehrmaldosiervorrichtung der vorstehend beschriebenen Art in ein kombiniertes Dosiergerät integriert ist. Kombinierte Dosiergeräte sind unter dem Zwang, rationell zu fertigen und zu montieren, entstanden und in fast allen marktgängigen Haushalts-Geschirrspülmaschinen enthalten. Sie umfassen eine Vorrichtung zum Eingeben eines Reinigungsmittels , das meist in Pulverform zur Anwendung kommt, und eine Vorrichtung zum Eingeben eines flüssigen Klarspülmittels in den Spülraum, wobei es schon bekannt ist, beide Vorrichtungen mit dem gleichen Aktuator zu betätigen, insbesondere mit einem Hubmagnet oder einem Bimetall-Betätiger. Dabei wird durch die Art des elektrischen Signals oder auf andere Weise unterschieden, ob der Reinigungsmitteigeber oder die Klarspülmittel-Dosiervorrichtung betätigt werden soll.The invention is to be seen under the stipulation that a multiple dosing device of the type described above in a combined dosing device is integrated. Combined dosing devices were created under the constraint of rationally manufacturing and assembling and are included in almost all household dishwashers on the market. They include a device for entering a cleaning agent, which is usually used in powder form, and a device for entering a liquid rinse aid into the wash cabinet, it being known to operate both devices with the same actuator, in particular with a lifting magnet or one Bimetal actuator. A distinction is made by the type of electrical signal or in another way whether the detergent dispenser or the rinse aid dispenser should be actuated.
Die bekannten kombinierten Dosiergeräte sind so konzipiert, daß zuerst der Reinigungsmittelgeber und dann die Klarspülmittel-Dosiervorrichtung betätigt wird. Dies entspricht dem natürlichen Programmablauf und ist eine wichtige Voraussetzung für die durch die Erfindung vorgeschlagene Umwandlung der bekannten Einmaldosiergeräte in Mehrmaldosiergeräte. Wenn der Reinigungsmittelgeber erst einmal ausgelöst ist, steht einer mehrmaligen Auslösung der Klarspülmittel-Dosiervorrichtung nichts mehr im Wege.The known combined dosing devices are designed so that first the detergent dispenser and then the rinse aid dosing device is actuated. This corresponds to the natural program flow and is an important prerequisite for the conversion of the known single-dose devices into multiple-dose devices proposed by the invention. Once the detergent dispenser is triggered, there is nothing standing in the way of triggering the rinse aid dispenser several times.
Ein Ausführungsbeispiel der Erfindung, das auch die möglichen Varianten zeigt, wird nachstehend erläutert. Diese stellt eine schematische Schnittzeichnung einer Klarspülmittel- Mehrmaldosiervorrichtung dar.An embodiment of the invention, which also shows the possible variants, is explained below. This represents a schematic sectional drawing of a rinse aid multiple dosing device.
An einem Vorratsbehälter 1, der eine Einfüllöffnung mit Deckel 2 aufweist ist ein Zwischenspeicher 3 angebaut, der als Schöpfkammer ausgebildet ist. Die Trennwand hat oben eine Öffnung 4. Wenn also die ganze Vorrichtung, die in dieser Stellung in eine geschlossene Beschickungstür eingebaut ist, beim Öffnen der Tür um 90° nach links geschwenkt wird, füllt sich der Zwischenspeicher 3. Der Zwischenspeicher ist über eine Leitung 5 mit einer Dosierkammer 6 verbunden, in welcher ein Ventilstößel 7 sich bei einem Steuerimpuls aus seiner dargestellten Ruhelage nach oben bewegt. Dabei läuft der Inhalt der Dosierkammer aus. Erforderliche Be- und Entlüftungsleitungen sind der Einfachheit halber nicht dargestellt.An intermediate storage 3, which is designed as a scooping chamber, is attached to a storage container 1, which has a filling opening with a lid 2. The partition has an opening 4 at the top. If the entire device, which is installed in this position in a closed loading door, is swiveled 90 ° to the left when the door is opened, the buffer store 3 fills up. The intermediate store is connected via a line 5 to a metering chamber 6, in which a valve tappet 7 moves upward from its illustrated rest position upon a control pulse. The contents of the dosing chamber run out. The required ventilation lines are not shown for the sake of simplicity.
Zusätzlich oder alternativ kann das Volumen der Dosierkammer 7 veränderbar sein indem sich an die Dosierkammer ein Zylinder anschließt, in welchem ein Stellkolben 8 bewegbar ist. Andererseits kann auch das Volumen des Zwischenspeichert> 3 mittels eines Tauchkörpers 9 einstellbar sein, der je nach Einstellung mehr oder weniger weit in den Zwischenspeicher hineinragt . Additionally or alternatively, the volume of the metering chamber 7 can be changed by connecting a cylinder to the metering chamber in which an actuating piston 8 can be moved. On the other hand, the volume of the intermediate store> 3 can also be adjustable by means of an immersion body 9 which, depending on the setting, protrudes more or less far into the intermediate store.

Claims

Patentansprüche : Claims:
1. Verfahren zum Betrieb einer Haushalts- Geschirrspülmaschine, welche mit einer Programmwahleinrichtung und mit einer kombinierten Vorrichtung zum Eingeben eines Reinigungs- und eines Klarspülmittels in den Spülraum ausgerüstet ist, dadurch gekennzeichnet, daß Klarspülmittel mehr als ein ai zu unterschiedlichen Zeitpunkten innerhalb des jeweils gewählten Spülprogramms eingegeben wird.1. A method of operating a household dishwasher, which is equipped with a program selection device and with a combined device for entering a detergent and a rinse aid in the wash cabinet, characterized in that rinse aid more than one ai at different times within the selected wash program is entered.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Klarspülmittelgabe, die innerhalb eines bestimmten Programmabschnitts eingegeben wird, sich aus einer wählbaren Anzahl gleich großer Quanten zusammensetzt, die in einzelnen aufeinanderfolgenden Dosiervorgängen dosiert werden.2. The method according to claim 1, characterized in that the rinse aid, which is entered within a certain program section, is composed of a selectable number of equally large quanta, which are dosed in individual successive dosing processes.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Klarspülmittelgabe, die innerhalb eines bestimmten Programmabschnitts eingegeben wird, sich aus einer unveränderlichen Anzahl einstellbar großer Quanten zusammensetzt, die in einzelnen aufeinanderfolgenden Dosiervorgängen dosiert werden.3. The method according to claim 1, characterized in that the rinse aid, which is entered within a certain program section, is composed of an invariable number of adjustable large quanta, which are dosed in individual successive dosing processes.
4. Dosiervorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die Vorrichtung zum Eingeben eines Klarspülmittels einen Vorratsbehälter (1), einen Zwischenspeicher (3) und eine Dosierkammer (6) aufweist , daß eine Leitungsverbindung ( 5 ) von dem Zwischenspeicher (3) zur Dosierkammer (6) vorgesehen ist, und das Volumen des Zwischenspeichers (3) ein Mehrfaches des Dosierkammervolumens ist und daß eine Nachfüllverbindung (4) vom Vorratsbehälter zum Zwischenspeicher vorgesehen ist. 4. Dosing device for performing the method according to claim 1, characterized in that the device for entering a rinse aid has a storage container (1), an intermediate store (3) and a dosing chamber (6) that a line connection (5) from the intermediate store ( 3) to the dosing chamber (6) is provided, and the volume of the intermediate storage (3) is a multiple of the dosing chamber volume and that a refill connection (4) from the storage container to the intermediate storage is provided.
5. Dosiervorrichtung nach Anspruch 3 , dadurch gekennzeichnet, daß der Zwischenspeicher (3) als Schöpfkammer ausgebildet ist, die durch Schwenken der Dosiervorrichtung gefüllt wird.5. Dosing device according to claim 3, characterized in that the intermediate store (3) is designed as a scooping chamber which is filled by pivoting the dosing device.
6. Dosiervorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das Volumen der Dosierkammer (6) veränderbar (8) ist.6. Metering device according to claim 4, characterized in that the volume of the metering chamber (6) is variable (8).
7. Dosiervorrichtung nach Anspruch 4 , dadurch gekennzeichnet, daß das Volumen des Zwischenspeichers (3) veränderbar ist .7. Dosing device according to claim 4, characterized in that the volume of the intermediate store (3) is variable.
8. Kombiniertes Dosiergerät, das eine Vorrichtung zum Eingeben eines Reinigungsmittels und eine Vorrichtung zum Eingeben eines Klarspülmittels umfaßt, die beide von dem gleichen Aktuator betätigt werden, dadurch gekennzeichnet, daß für das Klarspülmittel eine Mehrmaldosiervorrichtung nach einem der vorhergehenden Ansprüche vorgesehen ist. 8. Combined dosing device comprising a device for entering a cleaning agent and a device for entering a rinse aid, both of which are operated by the same actuator, characterized in that a multiple dosing device according to one of the preceding claims is provided for the rinse aid.
EP98934744A 1997-05-16 1998-05-16 Metering device for a household dishwasher Expired - Lifetime EP0981291B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19720820A DE19720820A1 (en) 1997-05-16 1997-05-16 Method and dosing device for operating a household dishwasher
DE19720820 1997-05-16
PCT/DE1998/001371 WO1998051205A2 (en) 1997-05-16 1998-05-16 Method and metering device for operating a household dishwasher

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EP0981291A2 true EP0981291A2 (en) 2000-03-01
EP0981291B1 EP0981291B1 (en) 2001-08-22

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US (1) US6338351B1 (en)
EP (1) EP0981291B1 (en)
DE (2) DE19720820A1 (en)
WO (1) WO1998051205A2 (en)

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Also Published As

Publication number Publication date
WO1998051205A2 (en) 1998-11-19
DE59801259D1 (en) 2001-09-27
US6338351B1 (en) 2002-01-15
WO1998051205A3 (en) 1999-02-04
EP0981291B1 (en) 2001-08-22
DE19720820A1 (en) 1998-11-19

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