EP1531712B1 - Method for adapting a rinsing program in a dishwasher machine, and corresponding dishwasher machine - Google Patents

Method for adapting a rinsing program in a dishwasher machine, and corresponding dishwasher machine Download PDF

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Publication number
EP1531712B1
EP1531712B1 EP03792399A EP03792399A EP1531712B1 EP 1531712 B1 EP1531712 B1 EP 1531712B1 EP 03792399 A EP03792399 A EP 03792399A EP 03792399 A EP03792399 A EP 03792399A EP 1531712 B1 EP1531712 B1 EP 1531712B1
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EP
European Patent Office
Prior art keywords
rinsing
dishwasher
detected
program
absence
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP03792399A
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German (de)
French (fr)
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EP1531712A1 (en
Inventor
Michael Rosenbauer
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1531712A1 publication Critical patent/EP1531712A1/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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0026—Rinsing phases
    • 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
    • A47L2401/02—Consumable products information, e.g. information on detergent, rinsing aid or salt; Dispensing device information, e.g. information on the type, e.g. detachable, or status of the device
    • A47L2401/023—Quantity or concentration of the consumable product
    • 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
    • A47L2401/11—Water hardness, acidity or basicity
    • 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
    • A47L2501/02—Water discharge, e.g. opening or closure of discharge valve
    • 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
    • A47L2501/18—Water softening devices
    • 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
    • A47L2501/26—Indication or alarm to the controlling device or to the user
    • 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 adapting a washing program in a dishwasher.
  • dishwashing detergent which is in powder form and is introduced into a dishwashing machine dispensing device and dispensed therefrom at a predetermined time
  • liquid rinse aid which is also usually in the door of a dishwasher Present detergent dispenser and introduced therefrom at a predetermined time and in a predetermined amount
  • combination products so-called “2 in 1 tabs” or “2 in 1 gels”, which in addition to the dishwashing detergent also include the rinse aid and "3 in 1 tabs" or “3 in 1 gels”, which are next to the dishwashing detergent Rinse aid also contains a chemical which replaces the function of the softening device.
  • the use of tabs or gels can cause, for example, the rinse aid is released at a time in the wash liquor, at which no rinsing takes place, so that in an actual part program section rinsing no corresponding rinse aid is no longer available. Because with some known tabs or gels the release of the rinse aid is only coupled to the ambient temperature, so if this temperature is exceeded, cleaning, rinse aid is released already during a partial program section.
  • the rinse aid is not activated, so that also no rinse effect is achieved, but the rinse aid after completion of the wash program, for example, still in unresolved form.
  • the rinse aid usually has the function of degrading the surface tension of the rinse aid, the absence of the rinse aid in the rinse liquor leads to a reduced outflow of residual water left on the item to be cleaned in the drying subprogram, which is a significant factor compared to the use of rinse aid liquor with rinse aid portion results in a deteriorated drying result.
  • tabs or gels with a corresponding chemical which replaces the function of the softening device, similarly occurs the disadvantage that the amount of chemicals in the tabs or gels is not adjusted to all degrees of water hardness, so that each regionally, the Use of tabs or gels either reduces the degree of hardness too much or does not sufficiently reduce the degree of hardness.
  • the use of water with insufficiently reduced water hardness leads to a lower effectiveness of the rinsing agent and the rinse aid thereby results in a significantly deteriorated cleaning and drying results.
  • the user of the dishwasher may find that the cleaning performance and / or the drying performance is not satisfactory and in many cases causes this result on the dishwasher, although the cause is mainly due to the use of tabs or gels lies.
  • a composition for using a dishwasher is known.
  • the use includes one of two halves formed body, which forms a cavity in the middle, in which a further active ingredient capsule is stored.
  • a method for operating a dishwasher which may consist of the partial program steps pre-rinsing, cleaning, intermediate rinsing, rinsing and drying, wherein at a reduced degree of contamination a rinsing liquid is hidden and the rinsing liquid is taken over at least in the next program step, for example cleaning.
  • a device for regenerating the softening agent in a washing machine comprising a container for the softening agent, a container for the regenerating salt, and measuring means for determining whether a regeneration process is required. Furthermore, sensor means are provided for detecting the water hardness.
  • a method for the automatic control of the rinsing process in a dishwasher is known in which a depending on the degree of soiling of the items to be washed, the dishwashing amount and optionally of the dishwashing a varied from several part program steps rinsing program is variable.
  • the degree of contamination is preselected by the operator, the program controls depending on the operator's instructions, the Spülprogrammheft occupies and the further course of flushing optionally corrected depending on supplied sensor signals on Spülwassperübung, temperature rise rate and the like.
  • a dishwasher which has a level sensor for regulating the amount of water in a dishwasher.
  • a process for the supply of rinse aid in a dishwasher is known in which by means of an optical sensor, the foam of the final rinse liquid is monitored.
  • the overdosing of rinse aid during the rinsing process is avoided by specifying a desired value for the foam **** in the final rinse liquid for the dosed supply of rinse aid, that the foam detected by the optical sensor during the final rinse cycle is compared in the final rinse liquid with the predetermined setpoint value and the rinse aid is fed continuously or at intervals of the final rinse liquid until the detected *** corresponds to the predetermined desired value.
  • a method for operating a softening device of a domestic dishwasher wherein the softening device comprises an exchanger and a salt reservoir in or on which a sensor device for the latter is arranged as the concentration of a zone located in the salt reservoir, which actuates a display device.
  • the softening device comprises an exchanger and a salt reservoir in or on which a sensor device for the latter is arranged as the concentration of a zone located in the salt reservoir, which actuates a display device.
  • Object of the present invention is therefore to provide a method which allows the Spülprogrammablauf a dishwasher to be adjusted so that even when using a variety of combination detergent satisfactory cleaning and drying performance is achieved.
  • the washing program sequence is adjusted when the absence of the addition of rinse aid and during operation of the dishwasher and / or when the salt is not detected and the softening device is switched off and the dishwasher is operated.
  • the rinse aid failure detection associated with the operation of the dishwasher determines that either the user has forgotten to load rinse aid or that the tabs or gels described are being used. Due to the salt deficiency detection in connection with a deactivated softening device and with the operation of the dishwasher can be determined beyond doubt the use of tabs or gels. In all cases, an adaptation of the washing program is provided without the action of the user to achieve a satisfactory cleaning and drying performance according to the invention.
  • the number of liquor changes in a subprogram step intermediate flushing lowered and / or the number of liquor changes in a partial program step rinse and / or the duration of a partial program step drying and / or the so Connected temperature increased.
  • a reduced number of liquor changes in the sub-program step intermediate rinsing which is usually operated with clear water, allows further use of the cleaning liquor in rinsing, which then - if necessary - this "abducted" fleet can take over the rinsing functions.
  • An elevated temperature of the rinse aid liquor makes it possible to evaporate the residual liquid remaining on the product to be cleaned which has been heated with the rinse aid liquor and thus allows a sufficient drying result.
  • For adequate heating and sufficient residual cleaning of the material to be cleaned also serves to extend the rinse.
  • the increase in the temperature in the rinse also causes an increased temperature in the drying, the extension of which ensures a better evaporation of the residual liquid.
  • the salt water softener is set in operation despite the fact that the softening of the water is deactivated, in the absence of salt during the washing program, and that, if necessary, a salt-deficient indicator is put into operation despite being switched off.
  • the thus enabled use of softened water for cleaning and rinsing a better effectiveness of these additives is achieved.
  • the salt-deficient indicator put into operation despite being switched off indicates to the user the special case in the cleaning act.
  • the lack of consumables is determined by means of a too low level of consumables in an associated reservoir.
  • This usually already existing sensors are used for further advantageous measures.
  • the absence of consumables is determined by means of a sensor for measuring the properties of the corresponding cleaning liquid.
  • the rinse liquor is acidic when rinse aid is added, in contrast to the lye-based detergent liquor.
  • Non-softened water also has a different pH than softened water, in addition to the higher degree of hardness. Therefore, the sensor for measuring the properties of the wash liquor is advantageously a ph value sensor or a water hardness sensor.
  • the concentration of still present rinse aid in the rinse aid liquor can also be determined when compared with a predetermined value. Therefore, in a particularly advantageous manner during the wash program, the number of liquor changes in a partial program step intermediate rinse and / or rinse and / or the duration of a partial program step drying and / or the associated temperature corresponding to the determined. Value adjusted.
  • the softening device despite turned off to soften the water according to the detected value to a minimum value put into operation and possibly a salt deficiency display despite off state in operation. Since it is known that the chemical contained in the tabs or gels, which should replace the function of the softening device acts up to about 25 ° dH, the minimum degree of hardness is intended to be about 25 ° dH.
  • a sensor for measuring the properties of the corresponding cleaning liquid is arranged.
  • the senor for measuring the properties of the corresponding cleaning liquid is a ph value sensor or a water hardness sensor.

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  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Anpassen eines Spülprogramms in einer Geschirrspülmaschine.The invention relates to a method for adapting a washing program in a dishwasher.

Neben der herkömmlichen Verwendung von Geschirrspülmittel, welches in Pulverform vorliegt und in eine zumeist in der Tür einer Geschirrspülmaschine befindlichen Spülmittelabgabevorrichtung eingebracht und von dieser zu einem vorbestimmten Zeitpunkt ausgebracht wird und neben der Verwendung von flüssigem Klarspüler, der ebenfalls in eine zumeist in der Tür einer Geschirrspülmaschine befindlichen Spülmittelabgabevorrichtung eingebracht und von dieser zu einem vorbestimmten Zeitpunkt und in einer vorbestimmten Menge ausgebracht wird, sind seit einiger Zeit Mittel in tablettenförmiger oder gelförmiger Darreichungsform bekannt, welche nicht nur das eigentliche Spülmittel sondern auch diejenigen Bestandteile enthalten, die als Verbrauchsstoffe während einer Spülphase notwendig sind. So sind beispielsweise seit einiger Zeit Kombinationsprodukte, sogenannte "2 in 1 Tabs" oder "2 in 1 Gels", die neben dem Geschirrspülmittel auch den Klarspüler beinhalten und "3 in 1 Tabs" oder "3 in 1 Gels", die neben dem Geschirrspülmittel, dem Klarspüler auch eine Chemikalie, die die Funktion der Enthärtungseinrichtung ersetzt, beinhalten, bekannt. Nach der Vorstellung der Hersteller dieser Tabs oder Gels finden deren jeweiligen Bestandteile genau zu dem Zeitpunkt während des Spülprogrammablaufs Einsatz, an dem diese Bestandteile ihre optimale Wirkung entfalten.In addition to the conventional use of dishwashing detergent, which is in powder form and is introduced into a dishwashing machine dispensing device and dispensed therefrom at a predetermined time and in addition to the use of liquid rinse aid, which is also usually in the door of a dishwasher Present detergent dispenser and introduced therefrom at a predetermined time and in a predetermined amount, have been known for some time means in tablet or gel form, which contain not only the actual detergent but also those ingredients that are necessary as consumables during a rinsing phase , Thus, for example, combination products, so-called "2 in 1 tabs" or "2 in 1 gels", which in addition to the dishwashing detergent also include the rinse aid and "3 in 1 tabs" or "3 in 1 gels", which are next to the dishwashing detergent Rinse aid also contains a chemical which replaces the function of the softening device. Following the presentation of the manufacturers of these tabs or gels, their respective ingredients find application at exactly the time during the rinse cycle where these ingredients perform to their optimum effect.

Da jedoch der Spülprogrammablauf sowohl von dem jeweils gewählten Spülprogramm, dem Hersteller der Geschirrspülmaschine als auch von einzelnen Modelltypen abhängt, kann der Einsatz von Tabs oder Gels dazu führen, dass beispielsweise der Klarspüler zu einem Zeitpunkt in die Spülflotte freigegeben wird, an dem noch kein Klarspülen stattfindet, so dass in einem tatsächlichen Teilprogrammabschnitt Klarspülen kein entsprechender Klarspüler mehr vorhanden ist. Denn bei einigen bekannten Tabs oder Gels ist die Freigabe des Klarspülers lediglich an die Umgebungstemperatur erkoppelt, so dass bei Überschreiten dieser Temperatur bereits während eines Teilprogrammabschnitts Reinigen, Klarspüler freigesetzt wird.However, since the wash program sequence depends on both the selected wash program, the manufacturer of the dishwasher as well as individual model types, the use of tabs or gels can cause, for example, the rinse aid is released at a time in the wash liquor, at which no rinsing takes place, so that in an actual part program section rinsing no corresponding rinse aid is no longer available. Because with some known tabs or gels the release of the rinse aid is only coupled to the ambient temperature, so if this temperature is exceeded, cleaning, rinse aid is released already during a partial program section.

Bei einer anderen Ausgestaltung des Spülprogramms kann es sein, dass der Klarspüler nicht aktiviert wird, so dass ebenfalls keine Klarspülwirkung erzielt wird, wobei jedoch der Klarspüler nach Abschluss des Spülprogramms beispielsweise immer noch in unaufgelöster Form vorliegt.In another embodiment of the wash program, it may be that the rinse aid is not activated, so that also no rinse effect is achieved, but the rinse aid after completion of the wash program, for example, still in unresolved form.

Da der Klarspüler üblicherweise vor allem die Funktion des Abbaus der Oberflächenspannung der Klarspülflotte hat, führt das Fehlen des Klarspülers in der Klarspülflotte zu einem verringerten Abfließen des auf dem zu reinigenden Gutes verbliebenen Restwassers im Teilprogrammabschnitt Trocknen, was gegenüber der Verwendung einer Klarspülflotte mit Klarspüleranteil ein wesentlich verschlechtertes Trocknungsergebnis ergibt.Since the rinse aid usually has the function of degrading the surface tension of the rinse aid, the absence of the rinse aid in the rinse liquor leads to a reduced outflow of residual water left on the item to be cleaned in the drying subprogram, which is a significant factor compared to the use of rinse aid liquor with rinse aid portion results in a deteriorated drying result.

Bei der Verwendung von Tabs oder Gels mit einer entsprechenden Chemikalie, die die Funktion der Enthärtungseinrichtung ersetzt, tritt in ähnlicher Weise der Nachteil auf, dass die in den Tabs oder Gels befindliche Chemikalienmenge nicht auf alle Wasserhärtegrade abgestimmt ist, so dass jeweils regional bedingt, die Verwendung von Tabs oder Gels entweder den Härtegrad zu sehr reduziert oder den Härtegrad nicht ausreichend reduziert. Insbesondere die Verwendung von Wasser mit nicht ausreichend reduzierter Wasserhärte führt zu einer geringeren Wirksamkeit des Spülmittels und des Klarspülmittels ergibt dadurch ein wesentlich verschlechtertes Reinigungs- und Trocknungsergebnis.When using tabs or gels with a corresponding chemical, which replaces the function of the softening device, similarly occurs the disadvantage that the amount of chemicals in the tabs or gels is not adjusted to all degrees of water hardness, so that each regionally, the Use of tabs or gels either reduces the degree of hardness too much or does not sufficiently reduce the degree of hardness. In particular, the use of water with insufficiently reduced water hardness leads to a lower effectiveness of the rinsing agent and the rinse aid thereby results in a significantly deteriorated cleaning and drying results.

Als Folge dieser Verwendung der Tabs oder Gels kann der Benutzer der Geschirrspülmaschine feststellen, dass die Reinigungsleistung und/oder die Trocknungsleistung nicht befriedigend ist und führt dieses Ergebnis in vielen Fällen ursächlich auf die Geschirrspülmaschine zurück, obwohl die Ursache hauptsächlich in der Verwendung von Tabs oder Gels liegt.As a result of this use of the tabs or gels, the user of the dishwasher may find that the cleaning performance and / or the drying performance is not satisfactory and in many cases causes this result on the dishwasher, although the cause is mainly due to the use of tabs or gels lies.

Aus der WO00/06688 ist eine Zusammensetzung zur Verwendung einer Geschirrspülmaschine bekannt. Dabei umfasst die Verwendung einen aus zwei Hälften gebildeten Grundkörper, der in der Mitte einen Hohlraum bildet, in dem eine weitere Wirkstoffkapsel bevorratet ist.From the WO00 / 06688 For example, a composition for using a dishwasher is known. The use includes one of two halves formed body, which forms a cavity in the middle, in which a further active ingredient capsule is stored.

Aus der DE 42 43 886 A1 ist ein Verfahren zum Betreiben einer Geschirrspülmaschine bekannt, das aus den Teilprogrammschritten Vorspülen, Reinigen, Zwischenspülen, Klarspülen und Trocknen bestehen kann, wobei bei vermindertem Verschmutzungsgrad ein Spülflüssigkeitswechsel ausgeblendet wird und die Spülflüssigkeit wenigstens in den nächsten Programmschritt, beispielsweise Reinigen übernommen wird.From the DE 42 43 886 A1 a method for operating a dishwasher is known, which may consist of the partial program steps pre-rinsing, cleaning, intermediate rinsing, rinsing and drying, wherein at a reduced degree of contamination a rinsing liquid is hidden and the rinsing liquid is taken over at least in the next program step, for example cleaning.

Aus der DE 196 51 347 A1 ist ein weiteres Verfahren zum Betreiben einer Geschirrspülmaschine bekannt. Dabei ist eine vollständigen Anpassung des Programmablaufs an unterschiedliche Verschmutzungsgrade des zu reinigenden Geschirrs vorgesehen mittels wenigstens eines im Wesentlichen stufenlos einstellbaren, für den Spülvorgang notwendigen und durch ihn beeinflussten Parameters.From the DE 196 51 347 A1 Another method for operating a dishwasher is known. In this case, a complete adaptation of the program sequence to different degrees of soiling of the dishes to be cleaned is provided by means of at least one substantially continuously adjustable, necessary for the flushing process and influenced by him parameters.

Aus der EP 0 741 991 A1 ist eine Vorrichtung zur Regenerierung des Enthärtungsmittels in einer Waschmaschine bekannt, aufweisend einen Container für das Enthärtungsmittel, einen Container für das Regeneriersalz, und Messmittel zur Feststellung, ob ein Regenerierungsprozess erforderlich ist. Ferner sind Sensormittel zur Erfassung der Wasserhärte vorgesehen.From the EP 0 741 991 A1 there is known a device for regenerating the softening agent in a washing machine, comprising a container for the softening agent, a container for the regenerating salt, and measuring means for determining whether a regeneration process is required. Furthermore, sensor means are provided for detecting the water hardness.

Aus der DE 100 57 210 A1 ist ein Verfahren zur automatischen Steuerung des Spülprozesses in einer Geschirrspülmaschine bekannt, bei dem entsprechend abhängig vom Verschmutzungsgrad des Spülgutes, der Geschirrspülmenge und gegebenenfalls von der Geschirrspülart ein aus mehreren Teilprogrammschritten zusammensetzbares Spülprogramm variierbar ist. Der Verschmutzungsgrad wird vom Bediener vorgewählt, wobei die Programmsteuerungen abhängig von der Bedienervorgabe das Spülprogrammheft einnimmt und den weiteren Spülverlauf gegebenenfalls noch in Abhängigkeit zugeführter Sensorsignale über Spülwassertrübung, Temperaturanstiegsgeschwindigkeit und dergleichen korrigiert.From the DE 100 57 210 A1 a method for the automatic control of the rinsing process in a dishwasher is known in which a depending on the degree of soiling of the items to be washed, the dishwashing amount and optionally of the dishwashing a varied from several part program steps rinsing program is variable. The degree of contamination is preselected by the operator, the program controls depending on the operator's instructions, the Spülprogrammheft occupies and the further course of flushing optionally corrected depending on supplied sensor signals on Spülwassperübung, temperature rise rate and the like.

Aus der FR 2 589 057 ist eine Geschirrspülmaschine bekannt, die einen Niveausensor aufweist, zur Regulierung der Wassermenge in einer Geschirrspülmaschine.From the FR 2 589 057 For example, a dishwasher is known which has a level sensor for regulating the amount of water in a dishwasher.

Aus der EP 1 195 128 A2 ist eine Geschirrspülmaschine mit einer Einrichtung zur automatischen Zugabe einer vorgegebenen Menge an Klarspüler aus einem Klarspülervorrat bekannt. Um bei Benutzung von Reinigungstabletten bzw. -tabs mit Klarspüler eine überflüssige Zugabe von Klarspüler aus dem Klarspülervorrat zu vermeiden sind Mittel zum wahlweise Sperren der Klarspülerzugabe vorgesehen.From the EP 1 195 128 A2 is a dishwashing machine with a device for automatic addition of a predetermined amount of rinse aid from a rinse aid supply known. In order to avoid unnecessary addition of rinse aid from the rinse aid inventory when using cleaning tablets or rags with rinse aid, means are provided for selectively blocking rinse aid addition.

Aus der DE 145 151 A1 ist ein Verfahren zur Zufuhr von Klarspülmittel in einer Geschirrspülmaschine bekannt, bei der mittels eines optischen Sensors die Schaum**** der Klarspülflüssigkeit überwacht wird. Die Überdosierung von Klarspülmittel während des Klarspülvorgangs wird dadurch vermieden, dass für die dosierte Zufuhr von Klarspülmittel ein Sollwert für die Schaumstoff**** in der Klarspülflüssigkeit vorgegeben wird, dass während des Klarspülvorgangs der vom optischen Sensor erfasste *** der Schaum*** in der Klarspülflüssigkeit mit dem vorgegebenen Sollwert verglichen wird und das so lange Klarspülmittel kontinuierlich oder in Intervallen der Klarspülflüssigkeit zugeführt wird, bis der erfasst *** dem vorgegebenen Sollwert entspricht.From the DE 145 151 A1 a process for the supply of rinse aid in a dishwasher is known in which by means of an optical sensor, the foam of the final rinse liquid is monitored. The overdosing of rinse aid during the rinsing process is avoided by specifying a desired value for the foam **** in the final rinse liquid for the dosed supply of rinse aid, that the foam detected by the optical sensor during the final rinse cycle is compared in the final rinse liquid with the predetermined setpoint value and the rinse aid is fed continuously or at intervals of the final rinse liquid until the detected *** corresponds to the predetermined desired value.

Aus der DE 196 43 151 A1 ist ein Verfahren zum Betrieb einer Enthärtungseinrichtung einer Haushalts-Geschirrspülmaschine bekannt wobei die Enthärtungseinrichtung eine ***Austauscher und einen Salzvorratsbehälter aufweist, in dem oder an dem eine Sensoreinrichtung für diese als Konzentration einer in dem Salzvorratsbehälter befindlichen Zone angeordnet ist, die eine Anzeigevorrichtung betätigt. So kann bei einer ersten Inbetriebnahme der Haushalts-Geschirrspülmaschine eine Fehlanzeige der Anzeigevorrichtung sicher vermieden werden.From the DE 196 43 151 A1 a method for operating a softening device of a domestic dishwasher is known wherein the softening device comprises an exchanger and a salt reservoir in or on which a sensor device for the latter is arranged as the concentration of a zone located in the salt reservoir, which actuates a display device. Thus, a false display of the display device can be safely avoided at a first start of the household dishwasher.

Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren bereitzustellen, welches es erlaubt den Spülprogrammablauf einer Geschirrspülmaschine so anzupassen, dass auch bei Verwendung unterschiedlichster Kombinationsspülmittel eine befriedigende Reinigungs- und Trocknungsleistung erzielt wird.Object of the present invention is therefore to provide a method which allows the Spülprogrammablauf a dishwasher to be adjusted so that even when using a variety of combination detergent satisfactory cleaning and drying performance is achieved.

Diese Aufgabe wird durch das erfindungsgemäße Verfahren mit den Merkmalen gemäß Anspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindungen sind in den Unteransprüchen gekennzeichnet.This object is achieved by the method according to the invention with the features of claim 1. Advantageous developments of the inventions are characterized in the subclaims.

Bei dem erfindungsgemäßen Verfahren zum Anpassen eines Spülprogramms in einer Geschirrspülmaschine wird bei Feststellung des Fehlens der Zugabe von Klarspülmittel und bei Betrieb der Geschirrspülmaschine und/oder bei Feststellung des Fehlens von Salz und bei einer ausgeschalteten Enthärtungseinrichtung und bei Betrieb der Geschirrspülmaschine der Spülprogrammablauf angepasst. Durch die Klarspülermangelfeststellung in Verbindung mit dem Betrieb der Geschirrspülmaschine wird festgestellt, dass entweder der Benutzer vergessen hat Klarspüler einzufüllen oder dass die beschriebenen Tabs oder Gels verwendet werden. Durch die Salzmangelfeststellung in Verbindung mit einer ausgeschalteten Enthärtungseinrichtung und mit dem Betrieb der Geschirrspülmaschine kann zweifelsfrei die Benutzung von Tabs oder Gels festgestellt werden. In allen Fällen ist nach der Erfindung zum Erreichen einer befriedigende Reinigungs- und Trocknungsleistung eine Anpassung des Spülprogramms ohne Einwirkung des Benutzers vorgesehen.In the method according to the invention for adapting a washing program in a dishwashing machine, the washing program sequence is adjusted when the absence of the addition of rinse aid and during operation of the dishwasher and / or when the salt is not detected and the softening device is switched off and the dishwasher is operated. The rinse aid failure detection associated with the operation of the dishwasher determines that either the user has forgotten to load rinse aid or that the tabs or gels described are being used. Due to the salt deficiency detection in connection with a deactivated softening device and with the operation of the dishwasher can be determined beyond doubt the use of tabs or gels. In all cases, an adaptation of the washing program is provided without the action of the user to achieve a satisfactory cleaning and drying performance according to the invention.

Bei Feststellung des Fehlens der Zugabe von Klarspülmittel und bei Betrieb der Geschirrspülmaschine wird während des Spülprogramms die Anzahl der Flottenwechsel in einem Teilprogrammschritt Zwischenspülen gesenkt und/oder die Anzahl der Flottenwechsel in einem Teilprogrammschritt Klarspülen und/oder die Dauer eines Teilprogrammschrittes Trocknen und/oder die damit verbundene Temperatur erhöht. Eine gesenkte Anzahl der Flottenwechsel im Teilprogrammschritt Zwischenspülen, was üblicherweise mit Klarwasser betrieben wird, ermöglicht eine Weiterverwendung der Reinigungsflotte im Klarspülen, wodurch dann - bei Bedarf - diese "verschleppte" Flotte die Klarspülfunktionen übernehmen kann. Eine erhöhte Temperatur der Klarspülflotte, insbesondere im Klarspülen, ermöglicht ein besseres Verdampfen der auf dem mit der Klarspülflotte erwärmten zu reinigenden Gutes verbliebenen Restflüssigkeit und ermöglicht somit ein ausreichendes Trocknungsergebnis. Zur ausreichenden Erwärmung und zur ausreichenden Restreinigung des zu reinigenden Gutes dient auch eine Verlängerung des Klarspülens. Die Erhöhung der Temperatur im Klarspülen bewirkt natürlich auch eine erhöhte Temperatur im Trocknen, wobei dessen Verlängerung ein besseres Verdampfen der Restflüssigkeit gewährleistet.Upon detection of the absence of the addition of rinse aid and operation of the dishwasher, the number of liquor changes in a subprogram step intermediate flushing lowered and / or the number of liquor changes in a partial program step rinse and / or the duration of a partial program step drying and / or the so Connected temperature increased. A reduced number of liquor changes in the sub-program step intermediate rinsing, which is usually operated with clear water, allows further use of the cleaning liquor in rinsing, which then - if necessary - this "abducted" fleet can take over the rinsing functions. An elevated temperature of the rinse aid liquor, in particular in rinse-off, makes it possible to evaporate the residual liquid remaining on the product to be cleaned which has been heated with the rinse aid liquor and thus allows a sufficient drying result. For adequate heating and sufficient residual cleaning of the material to be cleaned also serves to extend the rinse. The increase in the temperature in the rinse, of course, also causes an increased temperature in the drying, the extension of which ensures a better evaporation of the residual liquid.

Nach einem weiteren bevorzugten Merkmal der Erfindung wird bei Feststellung des Fehlens von Salz während des Spülprogramms die Enthärtungseinrichtung trotz ausgeschaltetem Zustand zur Enthärtung des Wassers in Betrieb genommen wird und dass gegebenenfalls eine Salzmangelanzeige trotz ausgeschaltetem Zustand in Betrieb genommen. Durch die damit ermöglichte Verwendung von enthärtetem Wasser zur Reinigung und zum Klarspülen wird eine bessere Wirksamkeit dieser Zugabemittel erreicht. Die trotz ausgeschaltetem Zustand in Betrieb genommene Salzmangelanzeige zeigt dem Benutzer den Sonderfall in der Reinigungshandlung an.According to a further preferred feature of the invention, the salt water softener is set in operation despite the fact that the softening of the water is deactivated, in the absence of salt during the washing program, and that, if necessary, a salt-deficient indicator is put into operation despite being switched off. The thus enabled use of softened water for cleaning and rinsing a better effectiveness of these additives is achieved. The salt-deficient indicator put into operation despite being switched off indicates to the user the special case in the cleaning act.

Mit der vorliegenden Erfindung ist es gelungen, ein Verfahren bereitzustellen, welches es erlaubt, den Spülprogrammablauf einer Geschirrspülmaschine so anzupassen, dass auch bei Verwendung unterschiedlichster Kombinationsspülmittel eine befriedigende Reinigungs- und Trocknungsleistung erzielt wird.With the present invention, it has been possible to provide a method which makes it possible to adapt the washing program sequence of a dishwasher so that a satisfactory cleaning and drying performance is achieved even when using a variety of combination detergents.

Zweckmäßigerweise wird das Fehlen von Verbrauchsmitteln mittels eines zu geringen Füllstandes an Verbrauchsmitteln in einem zugeordneten Vorratsbehälter festgestellt. Damit werden üblicherweise ohnehin vorhandene Sensoren für weitere vorteilhafte Maßnahmen verwendet.Appropriately, the lack of consumables is determined by means of a too low level of consumables in an associated reservoir. This usually already existing sensors are used for further advantageous measures.

Nach einer vorteilhaften Ausführungsform der Erfindung wird das Fehlen von Verbrauchsmitteln mittels eines Sensors zur Messung der Eigenschaften der entsprechenden Reinigungsflüssigkeit festgestellt. Die Klarspülflotte ist bei Zugabe von Klarspüler im Gegensatz zu der laugenförmigen Reinigerflotte sauer. Nicht enthärtetes Wasser hat außer dem höheren Härtegrad auch einen anderen ph-Wert als enthärtetes Wasser. Daher ist vorteilhafterweise der Sensor zur Messung der Eigenschaften der Spülflotte ein ph-Wert-Sensor oder ein Wasserhärte-Sensor.According to an advantageous embodiment of the invention, the absence of consumables is determined by means of a sensor for measuring the properties of the corresponding cleaning liquid. The rinse liquor is acidic when rinse aid is added, in contrast to the lye-based detergent liquor. Non-softened water also has a different pH than softened water, in addition to the higher degree of hardness. Therefore, the sensor for measuring the properties of the wash liquor is advantageously a ph value sensor or a water hardness sensor.

Mit einem derartigen Sensor kann bei einem Vergleich mit einem vorgegebenen Wert auch die Konzentration ev. doch noch vorhandenen Klarspülers in der Klarspülflotte festgestellt werden. Daher wird in besonders vorteilhafter Weise während des Spülprogramms die Anzahl der Flottenwechsel in einem Teilprogrammschritt Zwischenspülen und/oder Klarspülen und/oder die Dauer eines Teilprogrammschrittes Trocknen und/oder die damit verbundene Temperatur entsprechend des festgestellten. Wertes angepasst.With a sensor of this kind, the concentration of still present rinse aid in the rinse aid liquor can also be determined when compared with a predetermined value. Therefore, in a particularly advantageous manner during the wash program, the number of liquor changes in a partial program step intermediate rinse and / or rinse and / or the duration of a partial program step drying and / or the associated temperature corresponding to the determined. Value adjusted.

Mit einem derartigen Sensor kann natürlich auch bei einem Vergleich mit einem vorgegebenen Wert die Resthärte des eingefüllten Wassers festgestellt werden. Daher wird in ebenfalls besonders vorteilhafter Weise bei Feststellung des Fehlens von Salz während des Spülprogramms die Enthärtungseinrichtung trotz ausgeschaltetem Zustand zur Enthärtung des Wassers entsprechend des festgestellten Wertes auf einen Mindestwert in Betrieb genommen und gegebenenfalls eine Salzmangelanzeige trotz ausgeschaltetem Zustand in Betrieb genommen. Da bekannt ist, dass die in den Tabs oder Gels enthaltene Chemikalie, die die Funktion der Enthärtungseinrichtung ersetzen soll bis etwa 25 °dH wirkt, beträgt bestimmungsgemäß der Mindesthärtegrad etwa 25° dH.With such a sensor, of course, even when compared with a predetermined value, the residual hardness of the filled water can be determined. Therefore is also in a particularly advantageous manner in determining the absence of salt during the wash program, the softening device despite turned off to soften the water according to the detected value to a minimum value put into operation and possibly a salt deficiency display despite off state in operation. Since it is known that the chemical contained in the tabs or gels, which should replace the function of the softening device acts up to about 25 ° dH, the minimum degree of hardness is intended to be about 25 ° dH.

Die oben genannte Aufgabe wird durch eine erfindungsgemäße Geschirrspülmaschine zur Verwendung eines Verfahrens nach einem der vorherigen Ansprüche gelöst.The above object is achieved by a dishwasher according to the invention for use of a method according to one of the preceding claims.

Nach einer vorteilhaften Ausführungsform der Erfindung ist ein Sensor zur Messung der Eigenschaften der entsprechenden Reinigungsflüssigkeit angeordnet.According to an advantageous embodiment of the invention, a sensor for measuring the properties of the corresponding cleaning liquid is arranged.

Vorteilhafterweise ist der Sensor zur Messung der Eigenschaften der entsprechenden Reinigungsflüssigkeit ein ph-Wert-Sensor oder ein Wasserhärte-Sensor.Advantageously, the sensor for measuring the properties of the corresponding cleaning liquid is a ph value sensor or a water hardness sensor.

Mit der vorliegenden Erfindung ist es gelungen, ein Verfahren bereitzustellen, welches es erlaubt, den Spülprogrammablauf einer Geschirrspülmaschine so anzupassen, dass auch bei Verwendung unterschiedlichster Kombinationsspülmittel eine befriedigende Reinigungs- und Trocknungsleistung erzielt wird.With the present invention, it has been possible to provide a method which makes it possible to adapt the washing program sequence of a dishwasher so that a satisfactory cleaning and drying performance is achieved even when using a variety of combination detergents.

Claims (8)

  1. Method of adapting a rinsing program in a dishwasher, in which when the absence of feed of clear rinsing agent is detected and the dishwasher is in operation and/or when the absence of salt is detected and the softening device is switched off and the dishwasher is in operation the rinsing program sequence is adapted, wherein when during the rinsing program the absence of feed of clear rinsing agent is detected and the dishwasher is in operation the number of solution changes in a sub-program step of intermediate rinsing is reduced and/or the number of solution changes in a sub-program step of clear rinsing and/or the duration of a sub-program step of drying and/or the temperature connected therewith is or are increased.
  2. Method according to claim 1, characterised in that when during the rinsing program the absence of salt is detected the softening device, notwithstanding a switched-off state, is placed in operation for softening the water and in a given case a salt deficiency indicating means, notwithstanding a switched-off state, is placed in operation.
  3. Method according to one of claims 1 and 2, characterised in that the absence of consumable agent is detected by means of a too-small filling state of consumable agent in an associated storage container.
  4. Method according to one of claims 1 and 2, characterised in that the absence of consumable agent is detected by means of a sensor for measuring the characteristics of the corresponding cleaning liquid.
  5. Method according to claim 4, characterised in that the sensor for measuring the characteristics of the corresponding cleaning liquid is a pH value sensor or a water hardness sensor.
  6. Method according to claim 5, characterised in that when during the rinsing program the absence of feed of clear rinsing agent is detected and the dishwasher is in operation the number of solution changes in a sub-program step of intermediate rinsing and/or clear rinsing and/or the duration of a sub-program step of drying and/or the temperature connected therewith is or are adapted in correspondence with the detected value.
  7. Method according to claim 5, characterised in that when during the rinsing program the absence of salt is detected the softening device, notwithstanding a switched-off state, is placed in operation at a minimum value for softening the water in correspondence with the detected value or degree of water hardness and that in a given case a salt deficiency indicating means, notwithstanding a switched-off state, is placed in operation.
  8. Method according to claim 7, characterised in that the degree of minimum hardness is approximately 25° pH.
EP03792399A 2002-08-21 2003-08-20 Method for adapting a rinsing program in a dishwasher machine, and corresponding dishwasher machine Expired - Lifetime EP1531712B1 (en)

Applications Claiming Priority (3)

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DE10238304 2002-08-21
DE10238304A DE10238304A1 (en) 2002-08-21 2002-08-21 Adaptive dishwashing program, compensates for water softening system deficiencies during operation
PCT/EP2003/009245 WO2004017807A1 (en) 2002-08-21 2003-08-20 Method for adapting a rinsing program in a dishwasher machine, and corresponding dishwasher machine

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EP1531712B1 true EP1531712B1 (en) 2012-10-10

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CN1674821A (en) 2005-09-28
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AU2003266298A1 (en) 2004-03-11
ES2392710T3 (en) 2012-12-13
US20120073605A1 (en) 2012-03-29
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WO2004017807A1 (en) 2004-03-04
US8419861B2 (en) 2013-04-16

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