EP1192893A2 - Method for detecting the load in a programmable dishwasher with crockery and dishwasher for carrying out the method - Google Patents

Method for detecting the load in a programmable dishwasher with crockery and dishwasher for carrying out the method Download PDF

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Publication number
EP1192893A2
EP1192893A2 EP01121896A EP01121896A EP1192893A2 EP 1192893 A2 EP1192893 A2 EP 1192893A2 EP 01121896 A EP01121896 A EP 01121896A EP 01121896 A EP01121896 A EP 01121896A EP 1192893 A2 EP1192893 A2 EP 1192893A2
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EP
European Patent Office
Prior art keywords
program
baskets
dishwasher
washing
light
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
EP01121896A
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German (de)
French (fr)
Other versions
EP1192893B1 (en
EP1192893A3 (en
Inventor
Andre Bertram
Erik Ekelhoff
Günther Dr. Ennen
Rainer Schultz
Stefan Tiekötter
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Miele und Cie KG
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Miele und Cie KG
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Publication date
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Publication of EP1192893A2 publication Critical patent/EP1192893A2/en
Publication of EP1192893A3 publication Critical patent/EP1192893A3/en
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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
    • A47L15/4295—Arrangements for detecting or measuring the condition of the crockery or tableware, e.g. nature or quantity
    • 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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0047—Energy or water consumption, e.g. by saving energy or water
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/34—Other automatic detections
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions

Definitions

  • the invention relates to a method for detecting the loading of a program-controlled Dishwasher with items to be washed, which can be stored in crockery baskets and cutlery baskets or the like. is stored in the door lockable rinsing container of the device.
  • the invention further relates to a dishwasher to carry out the method.
  • Program-controlled dishwashers can be operated in an energy-saving manner by the electricity and water consumption in relation to the amount of water for washing in the washing container loaded dishes or dishes. It is known from EP 0 943 287 A1, Detecting electromagnetic waves and / or sound waves in the rinsing container of the device Arrange sensors at a large distance from each other, especially on a room diagonal, whereby the sensors are assigned transmitters, the light signals or acoustic Send out signals. If the transmitter now sends signals, they will be transmitted by the invited Some of the items to be washed are reflected and / or delayed to the recipient if necessary (Sensor). The time evaluation of the signals received by the sensors then gives information about the arrangement of the dishes or the amount of dishes.
  • the determined in each case The amount of crockery or the load of dishes is registered and one that treats these items
  • the course of the washing program is influenced. This can be done, for example, by one of the loads Corresponding supply of rinsing liquid into the rinsing container and through to the load adapted heating of the rinsing liquid happen.
  • the load is recognized whenever the loaded crockery baskets are inside of the rinsing container.
  • the process works imprecisely, simply because that of the Transmitted electromagnetic waves or sound waves each immediately on the reflect the first obstacle (dishware) lying in the transmission beam and be deflected. This means that items to be washed can be placed behind them in the crockery basket or in the basket below Dishes from sender and receiver not recognized. Also in EP 0 943 287 A1 Detection of the loading quantity by capacitance measurement described above does not offer any here practical solution.
  • the invention has for its object a method and a dishwasher Execution of the method to specify with which loaded in the dishwasher Items to be washed are optimally recognized before the start of washing according to the basket assignment, quantity and, if necessary, the type of dishes and consequently the washing program control can be adapted or selected.
  • the invention is advantageous both the amount of dishes to be washed and the The size and possibly the type of wash ware can be determined automatically before the start of the wash program. Based on this result, the following washing program can be computer controlled with regard to an optimal economic and energy-saving mode of operation of the device modified or specifically selected.
  • a dishwasher (1) or its washing container shown in a simplified representation in FIG. 1 (2), Fig. 2, is in its program run on the type and amount of that loaded for rinsing Dishes (2) customizable.
  • the adaptation to the program takes place in cooperation with the device's own electronic program control (3) for processing and editing the corresponding washing technology parameters are designed with memory and arithmetic unit.
  • the design of the dishwasher (1) is generally known. Characteristic for such a household or commercial water-carrying device is a with Dishwashing baskets (4, 5) equipped washing container (6) in which the dishwashing baskets (4, 5) in superimposed Wash levels can be moved separately between rotating spray arms (not shown) are arranged.
  • the baskets (4, 5) for the dishes to be washed (2) are in the Rinsing container (6) on rails (7) or the like .. and for clearing or clearing the Dishes and cutlery in assigned cutlery baskets can be removed from the washing container (6).
  • a cutlery basket arranged in a crockery basket (4 or 5) can also be a cutlery drawer that can be moved in the same way as a crockery basket (4, 5) (8) according to FIG. 1 in a separate uppermost washing level of the washing container (6) his.
  • the washing compartment (6) is on the front for storing and clearing the dishes (2) to open by a hinged appliance door (9), to which the lower one opens when opened Dish rack (4) for loading and unloading can be completely set down and moved.
  • the upper crockery basket (5) and the cutlery drawer (8) are also above the assigned ones
  • the rails (7) can be completely pulled out of the rinsing tank. A basket pulled out releases the wash cabinet opening (10) completely.
  • a light source (12) generating a light curtain (11) and opposite each light receiver (13) provided.
  • the light source (12) is in Form of a light bar or rod-shaped from one or more individual light sources.
  • a light guide optic (light guide) fed with extraneous light is also possible. Any of these Light sources (12) form a separate optical one with the assigned light receivers (13)
  • a light source (12) is preferably in the ceiling area of the wash cabinet opening (10) above the top crockery basket (5) or the cutlery drawer (8) and another light source (12) on the side at the wash cabinet opening (10) next to all baskets.
  • the light sources (12) are assigned to the light receivers (13) on opposite sides of the container, the one group of light receivers (13) on the bottom and the other group on the side in the wash cabinet opening (10) are mounted.
  • the resulting light curtains (11) of the two light barrier systems (L1, L2) intersect and "flood" the full wash cabinet opening (10).
  • the electronic program control can but saved where the beginning of the basket is. This is also a retroactive one It is possible to load a crockery basket that is only partially pulled out of the wash cabinet.
  • the optical light barrier systems L1, L2 generates signals, the signal curve (S), see Fig. 3, each a measure of the loading amount of the basket and possibly also characteristic for the type of dishes (2). For example, a very broad impulse leaves conclude on a large plate.
  • the Computer electronics or program control From the signal curves (S) of the baskets the Computer electronics or program control (3) loading the dishes of the Rinsing container (6) by type, quantity and / or location in the basket and then determines that starting washing program or adjusts it to the given conditions.
  • the load detection is therefore advantageously carried out before the start of the washing program, so that the washing technology Parameters such as water volume, temperature, chemistry, pressure, rinsing time, water change and the like.
  • the electronic program control (3) can be set at an early stage. This happens because in the program control (3) the device stored in a memory comparison signal pattern of different basket loads is compared with the recorded actual loading of the baskets, and that the comparison result is used as a requirement for the dishwasher program run.
  • the optical light barrier systems (L1, L2) communicate with the dishwasher electronics.
  • the type of wash items can also be recorded, for example Generate signal patterns other than cups, glasses or cutlery.
  • a dishwasher designed in this way is combined with an automatic program operate with low water and energy consumption.

Abstract

The method involves passing the baskets (4,5,8) with items to be washed through at least one light barrier (11) in the washing container (6) and driving signal variations from the resulting variations in light interruptions, from which the loading of wash items in the washing container is determined. Loading detection is carried out before the start of the wash program. Independent claims are also included for the following: a program-controlled dishwasher.

Description

Die Erfindung betrifft ein Verfahren zur Erkennung der Beladung einer programmgesteuerten Geschirrspülmaschine mit Spülgut, welches in Geschirrkörben und ggf. Besteckkörben oder dergl. im türverschließbaren Spülbehälter des Gerätes abgelegt wird. Ferner betrifft die Erfindung eine Geschirrspülmaschine zur Durchführung des Verfahrens.The invention relates to a method for detecting the loading of a program-controlled Dishwasher with items to be washed, which can be stored in crockery baskets and cutlery baskets or the like. is stored in the door lockable rinsing container of the device. The invention further relates to a dishwasher to carry out the method.

Programmgesteuerte Geschirrspülmaschinen können energiesparend betrieben werden, indem der Strom- und Wasserverbrauch in Relation zur Menge des zum Spülen in den Spülbehälter geladenen Geschirrs oder Spülgutes gesetzt wird. So ist es aus der EP 0 943 287 A1 bekannt, im Spülbehälter des Gerätes elektromagnetische Wellen und/oder Schallwellen erkennende Sensoren in großem Abstand voneinander, insbesondere auf einer Raumdiagonalen anzuordnen, wobei den Sensoren jeweils Sender zugeordnet sind, die Lichtsignale oder akustische Signale aussenden. Schickt der Sender nun Signale aus, so werden diese vom eingeladenen Spülgut teilweise reflektiert und/oder gelängen gegebenenfalls zeitlich verzögert zum Empfänger (Sensor). Die zeitliche Auswertung der von den Sensoren empfangenen Signale gibt dann über die Anordnung des Spülguts bzw. die Geschirrmenge Aufschluss. Die jeweils ermittelte Geschirrmenge oder Spülgutbeladung wird registriert und ein dieses Spülgut behandelndes Spülprogramm wird in seinem Ablauf beeinflusst. Dies kann beispielsweise durch eine der Beladung entsprechende Zufuhr an Spülflüssigkeit in den Spülbehälter und durch ein an die Beladung angepasstes Aufheizen der Spülflüssigkeit geschehen.Program-controlled dishwashers can be operated in an energy-saving manner by the electricity and water consumption in relation to the amount of water for washing in the washing container loaded dishes or dishes. It is known from EP 0 943 287 A1, Detecting electromagnetic waves and / or sound waves in the rinsing container of the device Arrange sensors at a large distance from each other, especially on a room diagonal, whereby the sensors are assigned transmitters, the light signals or acoustic Send out signals. If the transmitter now sends signals, they will be transmitted by the invited Some of the items to be washed are reflected and / or delayed to the recipient if necessary (Sensor). The time evaluation of the signals received by the sensors then gives information about the arrangement of the dishes or the amount of dishes. The determined in each case The amount of crockery or the load of dishes is registered and one that treats these items The course of the washing program is influenced. This can be done, for example, by one of the loads Corresponding supply of rinsing liquid into the rinsing container and through to the load adapted heating of the rinsing liquid happen.

Die Beladungserkennung erfolgt immer dann, wenn sich die beladenen Geschirrkörbe innerhalb des Spülbehälters befinden. Das Verfahren arbeitet schon deshalb ungenau, weil die von den Sendern abgegebenen elektromagnetischen Wellen oder Schallwellen jeweils sofort an dem ersten im Sendestrahl liegenden Hindernis (Geschirrteil) reflektieren und abgelenkt werden. Somit wird ggf. dahinter positioniertes Spülgut im Geschirrkorb oder das im Korb darunter liegende Geschirr von Sender und Empfänger nicht erkannt. Auch die in der EP 0 943 287 A1 noch beschriebene Erkennung der Beladungsmenge durch Kapazitätsmessung bietet hier keine praktikable Lösung.The load is recognized whenever the loaded crockery baskets are inside of the rinsing container. The process works imprecisely, simply because that of the Transmitted electromagnetic waves or sound waves each immediately on the reflect the first obstacle (dishware) lying in the transmission beam and be deflected. This means that items to be washed can be placed behind them in the crockery basket or in the basket below Dishes from sender and receiver not recognized. Also in EP 0 943 287 A1 Detection of the loading quantity by capacitance measurement described above does not offer any here practical solution.

Ferner zum Stand der Technik zählende Einrichtungen oder Verfahren in Geschirrspülmaschinen, welche eine Beladungserkennung über die Auswertung des Temperaturverlaufs der Spülflüssigkeit während der Heizphase oder durch Auswertung von Pumpendruckschwankungen durchführen, sind insofern problematisch, da die Messergebnisse nicht zu Beginn des Spülprogramms sondern erst relativ spät, z. B. erst während eines laufenden Vorspülprogramms oder am Ende desselben vorliegen. Eine Anpassung des Spülprogramms kann demgemäss erst mit dem nächsten Programmabschnitt im laufenden Spülprogramm erfolgen.Furthermore, devices or methods in dishwashers belonging to the prior art, which a load detection via the evaluation of the temperature profile of the rinsing liquid during the heating phase or by evaluating pump pressure fluctuations are problematic in that the measurement results are not at the beginning of the washing program but only relatively late, e.g. B. only during an ongoing pre-wash program or at the end of it. Accordingly, the wash program can only be adjusted with the next program section in the current washing program.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Geschirrspülmaschine zur Durchführung des Verfahrens anzugeben, mit welchem in die Geschirrspülmaschine geladenes Spülgut nach Korbzuordnung, Menge und ggf. nach Geschirrart optimal vor Spülbeginn erkannt und daraus folgend die Spülprogrammsteuerung angepasst oder ausgewählt werden kann.The invention has for its object a method and a dishwasher Execution of the method to specify with which loaded in the dishwasher Items to be washed are optimally recognized before the start of washing according to the basket assignment, quantity and, if necessary, the type of dishes and consequently the washing program control can be adapted or selected.

Erfindungsgemäß wird diese Aufgabe durch die Verfahrensmerkmale des Patentanspruchs 1 gelöst. Die Durchführung des Verfahrens erfolgt dabei mittels einer Geschirrspülmaschine gemäß den Merkmalen des Anspruchs 7. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.According to the invention, this object is achieved by the method features of claim 1 solved. The method is carried out by means of a dishwasher according to the features of claim 7. Advantageous refinements and developments of Invention result from the subclaims.

Mit der Erfindung ist vorteilhaft sowohl die Menge des zu spülenden Geschirrs als auch die Größe und ggf. die Art des Spülguts noch vor dem Start des Spülprogramm automatisch ermittelbar. Von diesem Ergebnis ausgehend kann rechnergesteuert das folgende Spülprogramm hinsichtlich einer optimalen wirtschaftlichen und energiesparenden Arbeitsweise des Gerätes abgeändert oder gezielt ausgewählt werden.With the invention is advantageous both the amount of dishes to be washed and the The size and possibly the type of wash ware can be determined automatically before the start of the wash program. Based on this result, the following washing program can be computer controlled with regard to an optimal economic and energy-saving mode of operation of the device modified or specifically selected.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt

Figur 1
eine vereinfacht dargestellte Geschirrspülmaschine mit einem Spülbehälter und Geschirrkörben in der Seitenansicht bei geöffneter Gerätetür,
Figur 2
den Spülbehälter der Geschirrspülmaschine gemäß Fig. 1 in der Vorderansicht in perspektivischer Darstellung mit einer optischen Einrichtung zur Beladungserkennung,
Figur 3
einen von der optischen Einrichtung für eine bestimmte Geschirrkorbbeladung beispielhaft angegebenen Signalverlauf.
An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows
Figure 1
a dishwasher shown in simplified form with a washing container and crockery baskets in a side view with the appliance door open,
Figure 2
1 in front view in perspective view with an optical device for load detection,
Figure 3
a signal course specified by the optical device for a specific crockery basket load.

Eine in Fig. 1 in vereinfachter Darstellung gezeigte Geschirrspülmaschine (1) bzw. deren Spülbehälter (2), Fig. 2, ist in ihrem Programmlauf an die Art und Menge des zum Spülen geladenen Geschirrs (2) anpassbar. Die Anpassung an das Programm erfolgt im Zusammenwirken mit der geräteeigenen elektronischen Programmsteuerung (3), die zur Ver- und Bearbeitung der entsprechenden spültechnischen Parameter mit Speicher und Rechenwerk ausgebildet ist. Der konstruktive Aufbau der Geschirrspülmaschine (1) ist allgemein bekannt. Charakteristisch für ein solches im Haushalt oder auch gewerblich genutztes wasserführendes Gerät ist ein mit Geschirrkörben (4, 5) ausgestatteter Spülbehälter (6), in dem die Geschirrkörbe (4, 5) in übereinanderliegenden Spülebenen separat bewegbar zwischen rotierenden Sprüharmen (nicht gezeigt) angeordnet sind. Die Geschirrkörbe (4, 5) für das zu spülende Geschirr (2) sind im Spülbehälter (6) auf Laufschienen (7) oder dergl. geführt und zum Ein- bzw. Ausräumen des Geschirrs sowie der Bestecke in zugeordneten Besteckkörben aus dem Spülbehälter (6) herausfahrbar. Anstelle eines in einen Geschirrkorb (4 bzw. 5) eingeordneten Besteckkorbes (nicht gezeigt) kann auch eine gleichermaßen wie ein Geschirrkorb (4, 5) bewegbare Besteckschublade (8) gemäß Fig. 1 in einer separaten obersten Spülebene des Spülbehälters (6) vorgesehen sein. Der Spülbehälter (6) ist zum Ein- und Ausräumen des Geschirrs (2) frontseitig durch eine aufklappbare Gerätetür (9) zu öffnen, auf die im aufgeschwenkten Zustand der untere Geschirrkorb (4) zum Be- und Entladen vollständig abgestellt und verfahren werden kann. Ebenso sind der obere Geschirrkorb (5) sowie die Besteckschublade (8) über die zugeordneten Laufschienen (7) vollständig aus dem Spülbehälter herausziehbar. Ein herausgezogener Korb gibt dabei die Spülraumöffnung (10) vollständig frei.A dishwasher (1) or its washing container shown in a simplified representation in FIG. 1 (2), Fig. 2, is in its program run on the type and amount of that loaded for rinsing Dishes (2) customizable. The adaptation to the program takes place in cooperation with the device's own electronic program control (3) for processing and editing the corresponding washing technology parameters are designed with memory and arithmetic unit. The design of the dishwasher (1) is generally known. Characteristic for such a household or commercial water-carrying device is a with Dishwashing baskets (4, 5) equipped washing container (6) in which the dishwashing baskets (4, 5) in superimposed Wash levels can be moved separately between rotating spray arms (not shown) are arranged. The baskets (4, 5) for the dishes to be washed (2) are in the Rinsing container (6) on rails (7) or the like .. and for clearing or clearing the Dishes and cutlery in assigned cutlery baskets can be removed from the washing container (6). Instead of a cutlery basket arranged in a crockery basket (4 or 5) (Not shown) can also be a cutlery drawer that can be moved in the same way as a crockery basket (4, 5) (8) according to FIG. 1 in a separate uppermost washing level of the washing container (6) his. The washing compartment (6) is on the front for storing and clearing the dishes (2) to open by a hinged appliance door (9), to which the lower one opens when opened Dish rack (4) for loading and unloading can be completely set down and moved. The upper crockery basket (5) and the cutlery drawer (8) are also above the assigned ones The rails (7) can be completely pulled out of the rinsing tank. A basket pulled out releases the wash cabinet opening (10) completely.

Zur Erkennung der Spülgutbeladung nach Art, Korbzuordnung und Menge des Geschirrs (2) ist in der türverschließbaren Spülraumöffnung (10) im Bereich über oder unter den Geschirrkörben (4, 5; 8) und/oder auch seitlich eine einen Lichtvorhang (11) erzeugende Lichtquelle (12) und dieser gegenüberliegend jeweils Lichtempfänger (13) vorgesehen. Die Lichtquelle (12) ist in Form einer Lichtleiste oder stabförmig aus einer oder auch mehreren Einzellichtquellen gebildet. Ebenso ist auch eine mit Fremdlicht gespeiste Lichtleitoptik (Lichtleiter) möglich. Jede dieser Lichtquellen (12) bildet mit den zugeordneten Lichtempfängern (13) ein separates optisches Lichtschrankensystem (L1; L2).To identify the load of wash ware by type, basket assignment and quantity of dishes (2) in the door lockable wash cabinet opening (10) in the area above or below the crockery baskets (4, 5; 8) and / or laterally a light source (12) generating a light curtain (11) and opposite each light receiver (13) provided. The light source (12) is in Form of a light bar or rod-shaped from one or more individual light sources. A light guide optic (light guide) fed with extraneous light is also possible. Any of these Light sources (12) form a separate optical one with the assigned light receivers (13) Light barrier system (L1; L2).

Eine Lichtquelle (12) ist vorzugsweise im Deckenbereich der Spülraumöffnung (10) über dem obersten Geschirrkorb (5) bzw. der Besteckschublade (8) und eine weitere Lichtquelle (12) seitlich an der Spülraumöffnung (10) neben allen Körben angeordnet. Den Lichtquellen (12) sind jeweils an gegenüberliegenden Behälterseiten die Lichtempfänger (13) zugeordnet, wobei die eine Gruppe Lichtempfänger (13) bodenseitig und die andere Gruppe seitlich in der Spülraumöffnung (10) montiert sind. Die entstehenden Lichtvorhänge (11) der beiden Lichtschrankensysteme (L1, L2) kreuzen sich und "durchfluten" die volle Spülraumöffnung (10).A light source (12) is preferably in the ceiling area of the wash cabinet opening (10) above the top crockery basket (5) or the cutlery drawer (8) and another light source (12) on the side at the wash cabinet opening (10) next to all baskets. The light sources (12) are assigned to the light receivers (13) on opposite sides of the container, the one group of light receivers (13) on the bottom and the other group on the side in the wash cabinet opening (10) are mounted. The resulting light curtains (11) of the two light barrier systems (L1, L2) intersect and "flood" the full wash cabinet opening (10).

Das erfindungsgemäße Verfahren wird nun an hand der Fig. 1 näher erklärt.The method according to the invention is now explained in more detail with reference to FIG. 1.

Es ist für eine optimale Beladungserkennung nicht zwingend erforderlich, dass die beladenden Körbe (4, 5), sowie die Besteckschublade (8) beim Beladen mit Geschirr (2) vollständig aus dem Spülbehälter (10) herausgezogen sind. Dies kann zwar für die Geschirrerkennung vorteilhaft sein, weil sich so die Lichtvorhänge (11) in der freien Spülraumöffnung (10) ungehindert hinter den Körben ausbilden können, so dass vom beladenen Korb, wenn dieser in den Spülraum eingeschoben wird, mit einer Korbbewegung das vollständige Geschirr-Signalmuster erzeugt werden kann. Mit Hilfe des Mikrocontrollers der elektronischen Programmsteuerung kann aber gespeichert werden, wo sich der Korbanfang befindet. Dadurch ist auch eine nachträgliche Beladung eines nur teilweise aus dem Spülraum herausgezogenen Geschirrkorbes möglich.For optimal loading detection, it is not absolutely necessary that the loading Baskets (4, 5) as well as the cutlery drawer (8) completely when loading with dishes (2) the washing container (10) are pulled out. Although this can be advantageous for dish detection be because the light curtains (11) in the free wash cabinet opening (10) are unhindered can train behind the baskets so that from the loaded basket when this is in the wash cabinet is inserted, the complete tableware signal pattern is generated with a basket movement can be. With the help of the microcontroller the electronic program control can but saved where the beginning of the basket is. This is also a retroactive one It is possible to load a crockery basket that is only partially pulled out of the wash cabinet.

Wird ein beladener Geschirrkorb (4 bzw. 5) und/oder die Besteckschublade (8) in den Spülbehälter (6) hineingeschoben, so wird durch die Lichtunterbrechungen an den Empfangseinrichtungen der optischen Lichtschrankensysteme (L1, L2) Signale erzeugt, deren Signalverlauf (S), vergl. Fig. 3, jeweils ein Maß für die Beladungsmenge des Korbes sowie auch ggf. charakteristisch für die Art des eingeräumten Geschirrs (2) ist. Beispielsweise lässt ein sehr breiter Impuls auf einen großen Teller schließen. Es ergeben sich separate Signalverläufe von mehreren Empfangselementen (Lichtempfängern). Aus den Signalverläufen (S) der Körbe ermittelt der Rechner der Geräteelektronik bzw. die Programmsteuerung (3) die Geschirrbeladung des Spülbehälters (6) nach Art, Menge und/oder Lage im Körb und bestimmt das anschließend startende Spülprogramm bzw. passt dieses den gegebenen Verhältnissen an. Die Beladungserkennung erfolgt somit vorteilhaft vor dem Start des Spülprogramms, so dass die spültechnischen Parameter, wie Wassermenge, Temperatur, Chemie, Druck, Spüldauer, Wasserwechsel und dergl. durch entsprechenden Datenaustausch mit der elektronischen Programmsteuerung (3) schon frühzeitig einstellbar sind. Dies geschieht dadurch, dass in der Programmsteuerung (3) des Gerätes in einem Speicher hinterlegte Vergleichs-Signalmuster verschiedener Korbbeladungen mit der erfassten Ist-Beladung der Körbe verglichen wird, und dass das Vergleichsergebnis als Maßgabe für den Spülprogrammlauf der Geschirrspülmaschine herangezogen wird. Die optischen Lichtschrankensysteme (L1, L2) kommunizieren mit der Geschirrspülerelektronik.If a loaded crockery basket (4 or 5) and / or the cutlery drawer (8) in the washing container (6) is pushed in by the light interruptions at the receiving devices the optical light barrier systems (L1, L2) generates signals, the signal curve (S), see Fig. 3, each a measure of the loading amount of the basket and possibly also characteristic for the type of dishes (2). For example, a very broad impulse leaves conclude on a large plate. There are separate signal curves from several Receiving elements (light receivers). From the signal curves (S) of the baskets the Computer electronics or program control (3) loading the dishes of the Rinsing container (6) by type, quantity and / or location in the basket and then determines that starting washing program or adjusts it to the given conditions. The load detection is therefore advantageously carried out before the start of the washing program, so that the washing technology Parameters such as water volume, temperature, chemistry, pressure, rinsing time, water change and the like. by appropriate data exchange with the electronic program control (3) can be set at an early stage. This happens because in the program control (3) the device stored in a memory comparison signal pattern of different basket loads is compared with the recorded actual loading of the baskets, and that the comparison result is used as a requirement for the dishwasher program run. The optical light barrier systems (L1, L2) communicate with the dishwasher electronics.

Mit dem Verfahren ist eine frühzeitige und genaue Erkennung sowie Erfassung des jeweiligen Beladungszustandes möglich. Auch die Art des Spülguts kann erfasst werden, da beispielsweise Teller andere Signalmuster als Tassen, Gläser oder Bestecke erzeugen.With the method is an early and accurate detection and recording of each Loading condition possible. The type of wash items can also be recorded, for example Generate signal patterns other than cups, glasses or cutlery.

In einer vorteilhaften Weiterbildung der Erfindung kann neben der zum Nachladen von Geschirr nützlichen Erkennung der Korbauszugsstellung mittels der Prozessorsteuerung zusätzlich aber auch noch die Ein- und Ausfahrgeschwindigkeit der Körbe erfasst werden, wodurch die erzeugten Signalmuster in Relation zur Korbbewegung und zum bewegten Korb selbst gebracht werden können. Die Korbgeschwindigkeit könnte durch die Lichtschranken erfasst werden, z.B. mittels einer Zahnstange an einer Geschirrkorbseite, welche dann impulsartig einen Lichtstrahl unterbricht. Die Zahnstange funktioniert dann als Taktgebereinrichtung für die Korbgeschwindigkeitserkennung.In an advantageous development of the invention, in addition to that for reloading dishes useful detection of the basket pull-out position by means of the processor control additionally also the retraction and extension speed of the baskets are recorded, whereby the generated Signal patterns related to the basket movement and the moving basket itself can be. The basket speed could be detected by the light barriers, e.g. by means of a rack on a side of the crockery basket, which then pulsates a light beam interrupts. The rack then functions as a clock device for the basket speed detection.

In Verbindung mit einem Automatikprogramm ist eine so ausgebildete Geschirrspülmaschine mit niedrigem Wasser- und Energieverbrauch zu betreiben.A dishwasher designed in this way is combined with an automatic program operate with low water and energy consumption.

Claims (9)

Verfahren zur Erkennung der Beladung einer programmgesteuerten Geschirrspülmaschine mit Spülgut, welches in Geschirrkörben oder dergl. im türverschließbaren Spülbehälter des Gerätes abgelegt wird,
dadurch gekennzeichnet, dass die Körbe (4, 5, 8) mit dem Spülgut durch mindestens einen Lichtvorhang (11) in den Spülbehälter (6) geschoben werden, und dass aus dem dabei erzeugten Verlauf der Lichtunterbrechungen Signalverläufe (S) abgeleitet werden, aus denen die Geschirrbeladung des Spülbehälters (6) ermittelt wird.Method for recognizing the loading of a program-controlled dishwasher with items to be washed, which is placed in crockery baskets or the like in the door-lockable washing container of the device,
characterized in that the baskets (4, 5, 8) with the items to be washed are pushed into the washing container (6) through at least one light curtain (11), and in that signal profiles (S) are derived from the course of the light interruptions generated in the process the load on the dishes in the washing compartment (6) is determined. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die Beladungserkennung vor Beginn des Spülprogramms durchgeführt wird.Method according to claim 1,
characterized in that the load detection is carried out before the start of the washing program. Verfahren nach Anspruch 1 und 2,
dadurch gekennzeichnet, dass die geräteeigene Programmsteuerung (3) vom Signalverlauf (S) bzw. dem Verlauf der Lichtunterbrechungen gesteuert die Auswahl eines geeigneten Spülprogramms für die erkannte Beladung veranlasst oder das Spülprogramm modifiziert.Method according to claims 1 and 2,
characterized in that the device's own program control (3), controlled by the signal course (S) or the course of the light interruptions, initiates the selection of a suitable washing program for the detected load or modifies the washing program. Verfahren nach einem oder mehreren der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass in der Programmsteuerung (3) der Geschirrspülmaschine (1) in einem Speicher hinterlegte Vergleichs-Signalmuster verschiedener Korbbeladungen mit der erfassten Ist-Beladung der Körbe verglichen wird, und dass das Vergleichsergebnis als Maßgabe für den Spülprogrammlauf der Geschirrspülmaschine (1) herangezogen wird.Method according to one or more of claims 1 to 3,
characterized in that in the program control (3) of the dishwasher (1), comparison signal patterns of different basket loads stored in a memory are compared with the detected actual load of the baskets, and that the comparison result is used as a measure for the washing program run of the dishwasher (1) becomes. Verfahren nach einem oder mehreren der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass Korbauszugsstellungen eines zu beladenden Geschirrkorbes gespeichert werden.Method according to one or more of claims 1 to 4,
characterized in that basket pull-out positions of a crockery basket to be loaded are stored. Verfahren nach einem oder mehreren der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass die Ein- und/oder Ausfahrgeschwindigkeiten der Körbe (4, 5, 8) erfasst und die Signalverläufe zur Ermittlung der Geschirrbeladung in Relation zur jeweiligen Korbgeschwindigkeit gesetzt werden. Method according to one or more of claims 1 to 5,
characterized in that the entry and / or exit speeds of the baskets (4, 5, 8) are recorded and the signal curves for determining the loading of dishes are set in relation to the respective basket speed. Programmgesteuerte Geschirrspülmaschine zur Durchführung des Verfahrens nach Anspruch 1, mit einem durch eine aufklappbare Gerätetür zu öffnenden Spülbehälter, in welchem das zu spülende Geschirr in Geschirrkörben oder dergl. ablegbar ist,
dadurch gekennzeichnet, dass in der türverschließbaren Spülraumöffnung (10) im Bereich über oder unter den Geschirrkörben (4, 5, 8) und/oder seitlich eine einen Lichtvorhang (11) erzeugende Lichtquelle (12) und dieser Lichtquelle (12) gegenüberliegend zugeordnete Lichtempfänger (13) vorgesehen sind.Program-controlled dishwasher for carrying out the method according to claim 1, with a washing container which can be opened by means of a hinged appliance door and in which the dishes to be washed can be stored in baskets or the like.
characterized in that in the door closable wash cabinet opening (10) in the area above or below the crockery baskets (4, 5, 8) and / or laterally a light source (12) producing a light curtain (11) and light receiver (12) associated with this light source (12). 13) are provided. Programmgesteuerte Geschirrspülmaschine nach Anspruch 7,
dadurch gekennzeichnet, dass im Deckenbereich der Spülraumöffnung (10) und/oder seitlich an dieser eine über die Behälterbreite verlaufende stabförmige Lichtquelle und bodenseitig und/oder seitlich in der Spülraumöffnung (10) die Lichtempfänger (13) angeordnet sind.Program-controlled dishwasher according to claim 7,
characterized in that in the ceiling area of the wash cabinet opening (10) and / or laterally there is a rod-shaped light source running across the width of the container and on the bottom and / or laterally in the wash cabinet opening (10) the light receivers (13) are arranged. Programmgesteuerte Geschirrspülmaschine nach Anspruch 7,
dadurch gekennzeichnet, dass die Körbe (4, 5, 8) jeweils mit einer separaten Taktgebereinrichtung zur Korbgeschwindigkeitserkennung ausgebildet sind.Program-controlled dishwasher according to claim 7,
characterized in that the baskets (4, 5, 8) are each formed with a separate clock device for basket speed detection.
EP01121896A 2000-09-28 2001-09-12 Method for detecting the load in a programmable dishwasher with crockery and dishwasher for carrying out the method Expired - Lifetime EP1192893B1 (en)

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DE10048088A DE10048088A1 (en) 2000-09-28 2000-09-28 Method for recognizing the loading of a program-controlled dishwasher with dishes and a dishwasher for carrying out the method
DE10048088 2000-09-28

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US8771433B2 (en) 2006-11-23 2014-07-08 Electrolux Home Products Corporation, N.V. Dishwasher with an alarm device
WO2008125480A1 (en) 2007-04-12 2008-10-23 BSH Bosch und Siemens Hausgeräte GmbH Ribbon cable lighting for a water-bearing household appliance
US8142037B2 (en) 2007-04-12 2012-03-27 Bsh Bosch Und Siemens Hausgeraete Gmbh Ribbon cable lighting for a water-bearing household appliance
WO2009114348A1 (en) * 2008-03-14 2009-09-17 Premark Feg L.L.C. Conveyor dishwasher and method of operating a conveyor dishwasher
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US8696827B2 (en) 2010-12-01 2014-04-15 Whirlpool Corporation Dishwasher with imaging device for measuring load characteristics and a method for controlling same
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EP1192893B1 (en) 2004-11-10
DE50104470D1 (en) 2004-12-16
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ATE281784T1 (en) 2004-11-15
EP1192893A3 (en) 2003-06-11

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