EP2759630B1 - Method for operating a washing machine - Google Patents

Method for operating a washing machine Download PDF

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Publication number
EP2759630B1
EP2759630B1 EP14401001.4A EP14401001A EP2759630B1 EP 2759630 B1 EP2759630 B1 EP 2759630B1 EP 14401001 A EP14401001 A EP 14401001A EP 2759630 B1 EP2759630 B1 EP 2759630B1
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EP
European Patent Office
Prior art keywords
water
washing machine
heating member
operating
speed
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EP14401001.4A
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German (de)
French (fr)
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EP2759630A3 (en
EP2759630A2 (en
Inventor
Michael Finke
Heinz Maass
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Miele und Cie KG
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Miele und Cie KG
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/40—Steam generating arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements

Definitions

  • the invention relates to a method for operating a washing machine according to the preamble of claim 1.
  • EP 2 381 029 A1 For example, it is known to use the existing for heating the washing water heater for generating steam in a washing machine.
  • the radiator of the machine is just flooded and the water around the radiator heated so much that steam can occur. Due to the natural buoyancy of this steam can then get into the laundry drum and in contact with the laundry.
  • the invention thus raises the problem of providing for a washing machine, a method by which steam can be generated by the arranged in the tub radiator in a sufficient amount and high intensity.
  • the proposed in claim 1 embodiment is characterized in that the activated radiator is wetted during steam generation only with water. She Based on the idea to use a variable speed drain pump with which it is possible by targeted control of the speed to shift a subset of existing in the tub water in the sewer system, without this water is pumped to the outside. As a result, defined water levels for the evaporation process can be adjusted in the tub.
  • the specified in claim 1 invention is based on the initial idea to initiate the regulation of the advantageous for steam generation water level only after the initial refueling is completed. As a result, measurement inaccuracies can be avoided, which are caused by any trailing water or by water movements that have not yet settled in the tub.
  • FIG. 1 is a washing machine 1 shown with the necessary components for explaining the invention.
  • the feed of the fresh water is carried out as usual via the inlet valves 2 and the Waschstoffein Hugheskasten 21 in the tub 3, in which the laundry drum 4 is rotatably mounted.
  • the arranged inside the washing machine housing sewer system is here formed by the bellows designed as drain line 7, the filter housing 8, the drain pump 9, the connecting line 10 and the return valve 11. About the outside connected to the washing machine 1 drain hose 12, the wastewater can be transported to the sewer.
  • the heating element 6 of the heating device is arranged, with which both the washing water and the steam provided for generating fresh water can be heated.
  • the symbolically represented water level sensor 5, in conjunction with the arranged control device 13, ensures that the water levels required for the respective program can be set in the tub 3.
  • the drain pump 9 which must be designed as variable speed pump.
  • the fresh water intended for steam generation is led into the tub 3, until e.g. a predetermined water level Ho is reached, which is above the upper edge of the radiator 6.
  • the speed of the drain pump 9 is slowly increased to a speed level or driven at a lower speed compared to the Abpumpprintiere.
  • This speed level is thereby dimensioned so that a portion of the water in the tub 3 can be conveyed into the existing voids of the sewer system, but without an outward pumping.
  • a white space in the sewage system is e.g. the usual return valve 11 in question, which is not completely filled after switching off the drain pump 9 in part.
  • the water level in the tub 3 can be lowered so far by the water level sensor 5 in conjunction with the control device 13 to a new water level H1 that the radiator 6 is just covered with water. Now, if the radiator 6 is switched on according to the program, this can only be found slightly above the radiator 6 existing water layer an intense vapor evolution. The rising steam then passes through the natural buoyancy in the laundry located in the laundry drum 4.
  • the heating power of the radiator and the water level H1 during heating operation are matched accordingly.
  • the control of the system may be arranged to equalize the evaporated water over the set speed on the drain pump, thereby shifting more or less water into the headspace of the sewer system. Furthermore, the possibly missing amount of water can also be compensated by a Nachankvorgang.
  • the level control by the pressure switch - can thus be adjusted for the steam generation process optimum water level, resulting in rapid steam generation.
  • variable-speed drainage pump 9 through which a certain amount of water can be displaced from the tub 3 into the sewage system at a low adjustable speed.
  • a water level H2 is controlled, in which the radiator 6 is no longer or at least only partially in the water.
  • the intermittent operation of the drain pump 9 can be realized by the alternating switching on and off or by operating the drain pump 9 with different speed levels to bring about the short-term change of water levels H1 and H2.
  • an effective impulse vaporization can be produced, by which good treatment results for the laundry can be achieved for different situations.
  • the parameters determine water level H1 and H2 as well as the resulting by turning on and off the drain pump 9 pulse width t A the steam generating process.
  • the parameters are to be adjusted so that there is an oscillating movement of the water level as it were, with a continuous vaporization phase and a cooling phase for the heating element being obtained.
  • the speed stages to be controlled for carrying out the above-described methods are to be determined empirically depending on the specific conditions in the washing machine.
  • the respective speed will be below the speed, which is set for the Abpumpvorgang the wastewater. It is essential that a specific subset of the water can be transported into existing voids of the drain system by the controlled speed level, without the water is discharged to the outside. If a certain amount of water has evaporated, this can of course be compensated here by a corresponding Nachankvorgang.
  • the drain pump 9 run slowly in the manner of a soft start function on the intended speed plateau, so that can not spill out by the turn-on impulse water from the sewer system of the machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Betreiben einer Waschmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for operating a washing machine according to the preamble of claim 1.

Bei Waschmaschinen ist es allgemein bekannt, zur Verbesserung der erzielbaren Behandlungsergebnisse, die zu behandelnde Wäsche mit Dampf zu beaufschlagen. Durch den Einsatz von Dampf soll die Knitterbildung in der Wäsche verhindert werden oder es sollen am Ende des Programms eventuell vorhandene Knitter aus der Wäsche entfernt werden.In washing machines, it is generally known, in order to improve the achievable treatment results, to apply the laundry to be treated with steam. The use of steam is intended to prevent creasing in the laundry or to remove any creases from the laundry at the end of the program.

Aus EP 2 381 029 A1 ist es beispielsweise bekannt, bei einer Waschmaschine die für das Aufheizen des Waschwassers vorhandene Heizvorrichtung auch zur Erzeugung von Dampf zu nutzen. Der Heizkörper der Maschine wird dabei knapp überflutet und das Wasser um den Heizkörper so stark erhitzt, dass Dampf entstehen kann. Durch den natürlichen Auftrieb kann dieser Dampf dann in die Wäschetrommel und in Kontakt mit der Wäsche gelangen.Out EP 2 381 029 A1 For example, it is known to use the existing for heating the washing water heater for generating steam in a washing machine. The radiator of the machine is just flooded and the water around the radiator heated so much that steam can occur. Due to the natural buoyancy of this steam can then get into the laundry drum and in contact with the laundry.

Bei einem Dampferzeugungssystem in der vorgenannten Art bereitet es Schwierigkeiten, die Wasserstandshöhe so einzuregeln, dass es zu einer optimalen Dampfentwicklung kommen kann. Befindet sich der im Laugenbehälter angeordnete Heizkörper zu tief im Wasser, so kann kein Dampf mit ausreichender Intensität erzeugt werden. Er darf aber während des Einschaltbetriebes auch nicht längere Zeit aus dem Wasser herausragen, da dann die Gefahr einer Überhitzung gegeben sein kann.In a steam generating system in the aforementioned type, it is difficult to regulate the water level so that it can come to an optimal vapor development. If the radiator located in the tub is too deep in the water, steam of sufficient intensity can not be generated. However, during the switch-on mode, it must not protrude out of the water for a longer period of time, because then the danger of overheating may exist.

Hier den genau passenden Wasserstand für den Dampferzeugungsprozess einregeln zu können, gestaltet sich insofern schwierig, da der Wassereinlauf sehr dynamisch abläuft und das Wassereinlaufsystem einem gewissen Trägheitsmoment unterliegt. Nach dem Abschalten des Einlaufventils durch den Wasserstandssensor kann eine nicht immer genau bestimmbare Wassermenge in den Laugenbehälter nachlaufen.Here, to be able to adjust the exact water level for the steam generation process, so far difficult, since the water inlet is very dynamic and the water inlet system is subject to a certain moment of inertia. After switching off the inlet valve by the water level sensor, a not always determinable amount of water can run into the tub.

Der Erfindung stellt sich somit das Problem, für eine Waschmaschine ein Verfahren bereitzustellen, mit dem Dampf durch den im Laugenbehälter angeordneten Heizkörper in ausreichender Menge und hoher Intensität erzeugt werden kann.The invention thus raises the problem of providing for a washing machine, a method by which steam can be generated by the arranged in the tub radiator in a sufficient amount and high intensity.

Erfindungsgemäß wird dieses Problem durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.According to the invention, this problem is solved by a method having the features of patent claim 1. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

Die im Patentanspruch 1 vorgeschlagene Ausführungsform zeichnet sich dadurch aus, dass der eingeschaltete Heizkörper während der Dampferzeugung lediglich mit Wasser benetzt ist. Sie basiert auf dem Gedanken, eine drehzahlregelbare Ablaufpumpe zu verwenden, mit der es durch eine gezielte Steuerung der Drehzahl möglich wird, eine Teilmenge des im Laugenbehälter vorhandenen Wassers in des Abwassersystem zu verlagern, ohne das dieses Wasser nach außen abgepumpt wird. Dadurch können im Laugenbehälter definierte Wasserstände für den Verdampfungsprozess eingeregelt werden.The proposed in claim 1 embodiment is characterized in that the activated radiator is wetted during steam generation only with water. she Based on the idea to use a variable speed drain pump with which it is possible by targeted control of the speed to shift a subset of existing in the tub water in the sewer system, without this water is pumped to the outside. As a result, defined water levels for the evaporation process can be adjusted in the tub.

Die im Patentanspruch 1 angegebene Erfindung beruht auf der Ausgangsüberlegung, die Regelung des für die Dampferzeugung vorteilhaften Wasserstandes erst dann einzuleiten, nachdem der anfängliche Tankvorgang abgeschlossen ist. Dadurch lassen sich Messungenauigkeiten vermeiden, die durch eventuell nachlaufendes Wasser oder durch im Laugenbehälter noch nicht zur Ruhe gekommene Wasserbewegungen hervorgerufen werden.The specified in claim 1 invention is based on the initial idea to initiate the regulation of the advantageous for steam generation water level only after the initial refueling is completed. As a result, measurement inaccuracies can be avoided, which are caused by any trailing water or by water movements that have not yet settled in the tub.

Die mit der Erfindung erreichbaren Vorteile bestehen somit insbesondere darin, dass das Einregeln eines für den Verdampfungsprozess definierten Wasserstandes durch ohnehin vorhandene Bauelemente und Steuerungsvorrichtungen ermöglicht wird und damit eine effiziente Dampferzeugung durch den im Laugenbehälter vorhandenen Heizkörper erzielt werden kann. Somit kann eine prozessoptimierte Dampferzeugung in der Waschmaschine realisiert werden.The advantages achievable with the invention thus consist in particular in the fact that the adjustment of a water level defined for the evaporation process is made possible by already existing components and control devices and thus an efficient steam generation can be achieved by the radiator present in the tub. Thus, a process-optimized steam generation can be realized in the washing machine.

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

Figur 1
das Prinzipschaubild einer Trommelwaschmaschine von der Seite gesehen,
Figur 2
in einem Ausschnitt den unteren Bereich der Trommelwaschmaschine gemäß Figur 1 mit dem im Laugenbehälter angeordneten Heizkörper,
Figur 3
das Diagramm des Steuerungssignals für den intermittierenden Betrieb der Ablaufpumpe.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows
FIG. 1
the schematic diagram of a drum washing machine seen from the side,
FIG. 2
in a section of the lower portion of the drum washing machine according to FIG. 1 with the radiator in the tub,
FIG. 3
the diagram of the control signal for the intermittent operation of the drain pump.

In der Figur 1 ist eine Waschmaschine 1 mit den zur Erläuterung der Erfindung notwendigen Bauteilen dargestellt. Der Zulauf des Frischwassers erfolgt wie üblich über die Einlassventile 2 und den Waschmitteleinspülkasten 21 in den Laugenbehälter 3, in dem die Wäschetrommel 4 drehbar gelagert ist. Das innerhalb des Waschmaschinengehäuses angeordnete Abwassersystem wird hier von der als Faltenbalg ausgebildeten Ablaufleitung 7, dem Filtergehäuse 8, der Ablaufpumpe 9, der Verbindungsleitung 10 sowie der Rücklaufsicherung 11 gebildet. Über den außen an der Waschmaschine 1 angeschlossenen Ablaufschlauch 12 kann das Abwasser in die Kanalisation befördert werden.In the FIG. 1 is a washing machine 1 shown with the necessary components for explaining the invention. The feed of the fresh water is carried out as usual via the inlet valves 2 and the Waschmitteleinspülkasten 21 in the tub 3, in which the laundry drum 4 is rotatably mounted. The arranged inside the washing machine housing sewer system is here formed by the bellows designed as drain line 7, the filter housing 8, the drain pump 9, the connecting line 10 and the return valve 11. About the outside connected to the washing machine 1 drain hose 12, the wastewater can be transported to the sewer.

Im unteren Bereich des Laugenbehälters 3 ist der Heizkörper 6 der Heizvorrichtung angeordnet, mit dem sowohl das Waschwasser als auch das für die Dampferzeugung vorgesehene Frischwasser aufgeheizt werden kann.In the lower part of the tub 3, the heating element 6 of the heating device is arranged, with which both the washing water and the steam provided for generating fresh water can be heated.

Der symbolisch dargestellte Wasserstandssensor 5 sorgt in Verbindung mit der angeordneten Steuervorrichtung 13 dafür, dass die für das jeweilige Programm benötigten Wasserstände im Laugenbehälter 3 eingestellt werden können.The symbolically represented water level sensor 5, in conjunction with the arranged control device 13, ensures that the water levels required for the respective program can be set in the tub 3.

Nachfolgend wird zunächst die Ausführungsform eines nicht erfindungsgemäßen Verfahrens für die Dampferzeugung durch den Heizkörper 6 beschrieben.Hereinafter, the embodiment of a non-inventive method for the generation of steam by the radiator 6 will be described first.

Einen wesentlichen Bestandteil bildet dabei die Ablaufpumpe 9, die als drehzahlregelbare Pumpe ausgebildet sein muss. Zuerst wird das für die Dampferzeugung vorgesehene Frischwasser in den Laugenbehälter 3 geleitet, bis z.B. ein vorbestimmter Wasserstand Ho erreicht ist, der oberhalb der Oberkante des Heizkörpers 6 liegt.An essential part of this is the drain pump 9, which must be designed as variable speed pump. First, the fresh water intended for steam generation is led into the tub 3, until e.g. a predetermined water level Ho is reached, which is above the upper edge of the radiator 6.

Wenn sich dieser Wasserstand nach dem Einlaufvorgang eingepegelt hat, wird die Drehzahl der Ablaufpumpe 9 langsam bis auf eine Drehzahlstufe erhöht bzw. mit einer gegenüber der Abpumpdrehzahl niedrigeren Drehzahl angetrieben. Diese Drehzahlstufe wird dabei so bemessen, dass ein Teil des im Laugenbehälter 3 befindlichen Wassers in die vorhandenen Leerräume des Abwassersystems befördert werden kann, ohne dass aber ein Abpumpen nach außen erfolgt. Als Leerraum im Abwassersystem kommt z.B. die übliche Rücklaufsicherung 11 in Frage, die nach dem Abschalten der Ablaufpumpe 9 zum Teil nicht vollständig gefüllt ist. Durch die vorbeschriebene Maßnahme kann der Wasserstand im Laugenbehälter 3 durch den Wasserstandssensor 5 in Verbindung mit der Steuervorrichtung 13 auf einen neuen Wasserstand H1 soweit abgesenkt werden, dass der Heizkörper 6 nur noch soeben mit Wasser bedeckt ist. Wenn nun der Heizkörper 6 programmgemäß eingeschaltet wird, kann sich durch diese nur noch geringfügig oberhalb des Heizkörpers 6 vorhandene Wasserschicht eine intensive Dampfentwicklung ergeben. Der aufsteigende Dampf gelangt dann durch den natürlichen Auftrieb in die in der Wäschetrommel 4 befindliche Wäsche.If this level has leveled after the inlet process, the speed of the drain pump 9 is slowly increased to a speed level or driven at a lower speed compared to the Abpumpdrehzahl. This speed level is thereby dimensioned so that a portion of the water in the tub 3 can be conveyed into the existing voids of the sewer system, but without an outward pumping. As a white space in the sewage system is e.g. the usual return valve 11 in question, which is not completely filled after switching off the drain pump 9 in part. By the measure described above, the water level in the tub 3 can be lowered so far by the water level sensor 5 in conjunction with the control device 13 to a new water level H1 that the radiator 6 is just covered with water. Now, if the radiator 6 is switched on according to the program, this can only be found slightly above the radiator 6 existing water layer an intense vapor evolution. The rising steam then passes through the natural buoyancy in the laundry located in the laundry drum 4.

Um Dampf in ausreichender Menge und mit geeigneter Intensität zu erzeugen, sind die Heizleistung des Heizkörpers und der Wasserstand H1 während des Heizbetriebes entsprechend aufeinander abzustimmen. Die Steuerung des Systems kann so eingerichtet werden, dass der Ausgleich für das verdampfte Wasser über die einzustellende Drehzahl an der Ablaufpumpe erfolgt, wodurch mehr oder weniger Wasser in den Leerraum des Abwassersystems verlagert wird. Weiterhin kann die evtl. fehlende Wassermenge auch über einen Nachtankvorgang ausgeglichen werden.In order to generate steam in sufficient quantity and with suitable intensity, the heating power of the radiator and the water level H1 during heating operation are matched accordingly. The control of the system may be arranged to equalize the evaporated water over the set speed on the drain pump, thereby shifting more or less water into the headspace of the sewer system. Furthermore, the possibly missing amount of water can also be compensated by a Nachankvorgang.

Durch die vorhandene Sensorik in der Waschmaschine - Drehzahlregelung der Pumpe, das Einstellen der Drehzahl auf ein bestimmtes Drehzahl-Plateau, die Wasserstandsregelung durch den Druckwächter - kann somit eine für den Dampferzeugungsprozess optimale Wasserstandshöhe eingeregelt werden, was zu einer schnellen Dampferzeugung führt.By the existing sensors in the washing machine - speed control of the pump, setting the speed to a certain speed plateau, the level control by the pressure switch - can thus be adjusted for the steam generation process optimum water level, resulting in rapid steam generation.

Die erfindungsgemäße Ausführungsform wird im Folgenden zusätzlich mit Figur 3 erläutert.The embodiment according to the invention is additionally described below FIG. 3 explained.

Einen wesentlichen Bestandteil bildet auch hier die drehzahlregelbare Ablaufpumpe 9, durch die mit einer niedrig einstellbaren Drehzahl eine gewisse Wassermenge aus dem Laugenbehälter 3 in das Abwassersystem verlagert werden kann. In diesem Fall wird jedoch ein Wasserstand H2 angesteuert, bei dem sich der Heizkörper 6 nicht mehr oder zumindest nur noch teilweise im Wasser befindet. Wenn die Ablaufpumpe 9 nun intermittierend betrieben wird, wie dies in den Figuren 3 und 4 sinnbildlich dargestellt ist, kann man einen Wechsel zwischen einem freiliegenden und einen mit Wasser bedeckten Heizkörper 6 erzeugen. Dieser Wechsel kann so abgestimmt werden, dass das den freiliegenden Heizkörper 6 noch benetzende Restwasser schnell verdampft und ein Überhitzen des Heizkörpers 6 durch das den Heizkörper 6 anschließend umflutende Wasser vermieden wird.An essential part here too is the variable-speed drainage pump 9, through which a certain amount of water can be displaced from the tub 3 into the sewage system at a low adjustable speed. In this case, however, a water level H2 is controlled, in which the radiator 6 is no longer or at least only partially in the water. When the drain pump 9 is now operated intermittently, as shown in the Figures 3 and Fig. 4 is symbolically illustrated, one can create a change between an exposed and a water-covered radiator 6. This change can be adjusted so that the exposed radiator 6 still wetting residual water evaporates quickly and overheating of the radiator 6 is avoided by the radiator 6 then flooding water.

Der intermittierende Betrieb der Ablaufpumpe 9 lässt sich durch das wechselnde Ein- und Ausschalten oder durch Betreiben der Ablaufpumpe 9 mit unterschiedlichen Drehzahlstufen realisieren, um den kurzzeitigen Wechsel der Wasserstände H1 und H2 herbeizuführen.The intermittent operation of the drain pump 9 can be realized by the alternating switching on and off or by operating the drain pump 9 with different speed levels to bring about the short-term change of water levels H1 and H2.

Mit dieser Variante lässt sich eine wirksame Impulsbedampfung erzeugen, durch die für verschiedene Situationen gute Behandlungsergebnisse für die Wäsche erzielt werden können. Wie das Diagramm in der Figur 3 verdeutlicht, bestimmen die Parameter Wasserstand H1 und H2 sowie die durch das Ein- und Ausschalten der Ablaufpumpe 9 sich ergebende Impulsbreite tA den Dampferzeugungsvorgang. Dabei sind die Parameter so einzustellen, dass sich quasi eine oszillierende Bewegung des Wasserstandes ergibt, wobei im ständigen Wechsel eine Stoßverdampfungsphase und eine Abkühlungsphase für den Heizkörper erhalten wird.With this variant, an effective impulse vaporization can be produced, by which good treatment results for the laundry can be achieved for different situations. Like the diagram in the FIG. 3 clarifies the parameters determine water level H1 and H2 as well as the resulting by turning on and off the drain pump 9 pulse width t A the steam generating process. In this case, the parameters are to be adjusted so that there is an oscillating movement of the water level as it were, with a continuous vaporization phase and a cooling phase for the heating element being obtained.

Die zur Durchführung der vorbeschriebenen Verfahren anzusteuernden Drehzahlstufen sind je nach den konkreten Gegebenheiten in der Waschmaschine empirisch zu ermitteln. Die jeweilige Drehzahl wird dabei unterhalb der Drehzahl liegen, die für den Abpumpvorgang des Abwassers eingestellt ist. Wesentlich ist es dabei, dass durch die angesteuerte Drehzahlstufe eine bestimmte Teilmenge des Wassers in vorhandene Leerräume des Ablaufsystems befördert werden kann, ohne dass das Wasser nach außen abgeführt wird. Wenn eine gewisse Wassermenge verdampft ist, kann dies natürlich auch hier durch einen entsprechenden Nachtankvorgang ausgeglichen werden.The speed stages to be controlled for carrying out the above-described methods are to be determined empirically depending on the specific conditions in the washing machine. The respective speed will be below the speed, which is set for the Abpumpvorgang the wastewater. It is essential that a specific subset of the water can be transported into existing voids of the drain system by the controlled speed level, without the water is discharged to the outside. If a certain amount of water has evaporated, this can of course be compensated here by a corresponding Nachankvorgang.

Weiterhin sieht eine zweckmäßige Ausgestaltung des erfindungsgemäßen Verfahrens vor, die Ablaufpumpe 9 in der Art einer Sanftanlauffunktion langsam auf das vorgesehene Drehzahl-Plateau hoch laufen zu lassen, damit nicht schon durch den Einschaltimpuls Wasser aus dem Abwassersystem der Maschine herausschwappen kann.Furthermore, provides an expedient embodiment of the method according to the invention, the drain pump 9 run slowly in the manner of a soft start function on the intended speed plateau, so that can not spill out by the turn-on impulse water from the sewer system of the machine.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

  • 1. Waschmaschine1st washing machine
  • 2. Einlassventile
    • 21 Waschmitteleinspülkasten
    2. intake valves
    • 21 detergent dispenser
  • 3. Laugenbehälter3. Lye container
  • 4. Wäschetrommel4th laundry drum
  • 5. Wasserstandssensor5. Water level sensor
  • 6. Heizkörper6. Radiator
  • 7. Ablaufleitung Faltenbalg7. Drain line bellows
  • 8. Filtergehäuse8. Filter housing
  • 9. Ablaufpumpe9. drain pump
  • 10. Verbindungsleitung10. Connection line
  • 11. Rücklaufsicherung11. Return fuse
  • 12. Ablaufschlauch12. drain hose
  • 13. Steuerungsvorrichtung13. Control device
  • H0, H1, H2 Wasserstände im LaugenbehälterH0, H1, H2 Water levels in the tub

Claims (4)

  1. Method for operating a washing machine, in particular a drum washing machine, comprising a laundry drum (4) for receiving the laundry to be washed, a device for feeding the fresh water which is to be introduced into the subs container (3), a heating member (6) which is arranged in the suds container (3) for heating the washing water and which also acts as a heating device for generating steam in order to treat the laundry using steam, a discharge pump (9) for pumping out the service water via the waste water system arranged in the housing of the washing machine (1), a control device (13), by means of which, in conjunction with a water level sensor (5), the water levels in the machine are adjusted, which water levels being provided according to the program,
    characterised in that
    a speed-controllable pump is used as the discharge pump (9),
    in that, following the inflow of the fresh water provided for the steam generation and after a water level (H0, H1) above the heating member (6) is reached, the discharge pump (9) is driven at a speed which causes some of the water located in the suds container (3) to be conveyed into empty spaces in the waste water system provided inside the washing machine,
    and in that a water level (H2) is adjusted by means of the water level sensor (5) in conjunction with the control device (13) in order to generate steam by means of the heating device (6), at which level the heating member (6) is located outside the water, whereby, when the heating member (6) is switched on, the residual water that is still adhered to the heating member is evaporated,
    and in that a change in the water levels H1 and H2 is brought about by the discharge pump (9) being intermittently switched on and off.
  2. Method for operating a washing machine according to claim 1,
    characterised in that
    a water level (H2) is adjusted by means of the water level sensor (5) in conjunction with the control device (13) in order to generate steam by means of the heating member (6), at which level a portion of the surface of the heating member (6) is located outside the water.
  3. Method for operating a washing machine according to claim 1,
    characterised in that
    a change in the water levels H1 and H2 is brought about by operating the discharge pump (9) at different speed levels.
  4. Method for operating a washing machine according to one or more of claims 1 to 3,
    characterised in that
    the discharge pump (9) is accelerated up to the speed using a soft start function, in which the water is conveyed from the suds container (3) into empty spaces in the waste water system.
EP14401001.4A 2013-01-29 2014-01-08 Method for operating a washing machine Active EP2759630B1 (en)

Applications Claiming Priority (1)

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DE102013100863.1A DE102013100863B4 (en) 2013-01-29 2013-01-29 Method for operating a washing machine

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EP2759630A2 EP2759630A2 (en) 2014-07-30
EP2759630A3 EP2759630A3 (en) 2014-12-17
EP2759630B1 true EP2759630B1 (en) 2016-04-06

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EP14401001.4A Active EP2759630B1 (en) 2013-01-29 2014-01-08 Method for operating a washing machine

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DE (1) DE102013100863B4 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104452227B (en) * 2014-12-26 2016-08-03 东华大学 Fabric drying degree dual automatic measuring and controlling platform and method thereof in a kind of dryer
DE102020212699A1 (en) 2020-10-08 2022-04-14 BSH Hausgeräte GmbH LAUNDRY TREATMENT APPLIANCE WITH STEAMING FUNCTION AND METHOD FOR STEAMING LAUNDRY
CN112853672A (en) * 2020-12-31 2021-05-28 长沙中联消防机械有限公司 Whole vehicle intelligent control system of washing vehicle and washing vehicle
CN113293574A (en) * 2021-06-09 2021-08-24 Tcl家用电器（合肥）有限公司 Washing machine and washing method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006129912A1 (en) * 2005-05-31 2006-12-07 Lg Electronics Inc. A washing machine generating and using the steam
US20110197638A1 (en) * 2010-02-17 2011-08-18 Bsh Home Appliances Corporation Steam generator for domestic household appliance
PL2381029T5 (en) * 2010-04-26 2021-07-05 Miele & Cie. Kg Method for operating a washing machine and washing machine
DE102011000287B4 (en) * 2011-01-24 2014-09-11 Miele & Cie. Kg Method for adjusting a volume flow delivered by a circulating pump in a water-conducting domestic appliance

Also Published As

Publication number Publication date
DE102013100863A1 (en) 2014-07-31
DE102013100863B4 (en) 2015-02-12
EP2759630A3 (en) 2014-12-17
EP2759630A2 (en) 2014-07-30

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