EP1215329A2 - Method for washing laundry - Google Patents

Method for washing laundry Download PDF

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Publication number
EP1215329A2
EP1215329A2 EP01127681A EP01127681A EP1215329A2 EP 1215329 A2 EP1215329 A2 EP 1215329A2 EP 01127681 A EP01127681 A EP 01127681A EP 01127681 A EP01127681 A EP 01127681A EP 1215329 A2 EP1215329 A2 EP 1215329A2
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EP
European Patent Office
Prior art keywords
laundry
washing
detergent
tub
dosing
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.)
Ceased
Application number
EP01127681A
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German (de)
French (fr)
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EP1215329A3 (en
Inventor
Wolfgang Steinhoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
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Miele und Cie KG
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Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1215329A2 publication Critical patent/EP1215329A2/en
Publication of EP1215329A3 publication Critical patent/EP1215329A3/en
Ceased legal-status Critical Current

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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/42—Detergent or additive supply
    • 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 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the invention relates to a method for washing laundry in a washing machine a tub, in which a drum is rotatably mounted, with a control device and a measuring device connected to the control device for detection a measured variable which is dependent on the suction behavior of the laundry to be washed, where the method involves rinsing a first amount of a detergent into the tub includes.
  • Washing machines with an automatic dosing device are generally from the DE 39 01 686 A1 known. There a dosing process is described in which the dosing amount of the detergent as a function of that which was supplied at the start of the wash cycle Water volume is calculated and then fed to the tub. This The amount of water allows a conclusion to be drawn about the amount of laundry loaded in the drum due to the late wash-in, however, part of the wash cycle is without detergent carried out, which worsens the cleaning effect. It also reduces water consumption increased by the amount required to wash in the detergent.
  • washing machines known (DE-AS 11 57 578), in which an automatic Dosage depends on the weight of the laundry. Such require an additional one Device for determining the weight of the laundry.
  • DE 44 38 760 A1 describes a method for determining a type of laundry and the Amount of laundry dependent load level in a washing machine known in the under other measured variables, the suction behavior of the laundry is also evaluated.
  • PatG DE 100 29 505.3 is a method for dosing detergent into a water / detergent mixture existing washing liquid, which is in the tub of a washing machine is known. With this two-stage dosing process, the second, automatically added detergent amount depending on the surface tension of the Wash liquid determined after the first dosing step.
  • the invention presents the problem of a method for washing laundry at the outset to disclose the type mentioned, in which an automatic dosage of a detergent amount takes place, on the one hand tailored to the nature of the laundry load of the drum and which, on the other hand, develops its cleaning effect as early as possible.
  • the basic structure of a washing machine for carrying out the method according to the invention for washing laundry is generally known, for example from DE 44 31 654 A1.
  • the washing machine shown in Figure 1 has a drum (1) which in a known manner a tub (2) is rotatably mounted. It is driven by a motor (3).
  • a tachometer generator (not shown) coupled to the motor accesses an engine speed signal Regulation from.
  • To measure the water level use the lower area of the tub (2) a riser (4) connected, within which a level sensor (5) in the form of an analog Pressure sensor is arranged.
  • the fresh water is fed into the tub (2) via a line in which there is a solenoid valve (6).
  • Solenoid valves are preferred with a small volume flow tolerance range over the largest possible pressure range for use.
  • the water supply depends on the embodiment described later the dosing device either via a detergent dispenser drawer (7) or directly into the tub (2).
  • a volume flow meter can be used in the water inlet Measurement of the amount of water
  • the central control element of the washing machine is a microprocessor control (8). She regulates the engine speed, the water temperature and the water level in the tub (2) with the help of control elements (e.g. power section, heating relay, solenoid valve) to which they Emits control signals. To do this, it receives from sensors (e.g. tachometer generator, temperature sensor, Level sensor) status signals. It also includes the microprocessor control (8) a time measuring device, a data memory for storing time data, the be determined by the time measuring device and a first and a second Only memory.
  • control elements e.g. power section, heating relay, solenoid valve
  • sensors e.g. tachometer generator, temperature sensor, Level sensor
  • the microprocessor control (8) a time measuring device, a data memory for storing time data, the be determined by the time measuring device and a first and a second Only memory.
  • the washing machine has a dosing device with which a microprocessor control (8) controlled automatic addition of detergent to the washing machine's tub (2) he follows.
  • This addition can be made via a directly opening into the tub (2) Line (as described in DE 39 01 686 A1) or via the detergent dispenser drawer (7) the washing machine.
  • the basic requirement is only a storage container for reception of the detergent and a conveyor connected to the reservoir, the a quantity to the tub (2) predetermined by the microprocessor control (8) or deliver the detergent dispenser drawer (7).
  • a liquid detergent is stored in a storage container (9). stored outside the washing machine.
  • To promote the detergent (11) carries a the container (9) placed hollow lance (10) at its upper end a metering pump (12), the Pressure side is connected to a hose (13). The other side of the hose (13) ends in a connecting piece (14) of the detergent dispenser drawer (7) on the rear wall of the housing of the washing machine.
  • the pump motor is powered by a power unit (not shown) in the washing machine and is through a relay (not shown) by the microprocessor control (8) controlled.
  • pump times can be stored in the first read-only memory be the promotion of 100% of a quantity recommended by the manufacturer for a Standard washing program correspond. This can be done using adjustment devices (not shown) or other data entry devices.
  • the microprocessor control (8) opens the solenoid valve (6) and causes water to flow in up to a first filling level N 1 .
  • This level N 1 depends on the type of washing program selected, particularly with regard to the type of textile set.
  • the valve (6) is closed.
  • the automatic metering of a first quantity of the liquid detergent (11) from the storage container (9) takes place at the same time.
  • the microprocessor control (8) switches on the metering pump (12) for a duration (I), the value of which corresponds to approximately half of the pumping time stored in the first read-only memory.
  • I a duration
  • a detergent manually entered into the detergent dispenser drawer (7) can be flushed in as the first quantity.
  • Corresponding options between automatic dosing and manual addition of detergent must then be provided on the washing machine.
  • a second filling level N 2 is calculated from the suction time and the solenoid valve is opened for the duration B until these filling levels are reached.
  • N 2 a level above N min is then set after a new suction phase. If the level drops again below N min due to a highly absorbent laundry item, an additional water inlet takes place.
  • the microprocessor controller (8) first retrieves the stored suction time t S1 from the data memory and, depending on this and on the pumping time stored in the first read-only memory, determines a second pumping time (II) stored in the second read-only memory. After switching on the metering pump (12) for this second pumping time, the solenoid valve (6) is opened briefly for a period C in order to flush detergent residues from the detergent dispenser drawer (7) into the tub (2).
  • the volume of water that is necessary to maintain a predetermined level above N min in the tub (2) can be recorded with a volume flow meter to determine the suction behavior of the laundry

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The method of washing is carried out so that it includes a step for injecting or dosing of a first amount of a washing medium in the washing liquid container (2). In connection with the determining of the measurement variable (ts1), an automatic dosing of a second amount of a washing medium (11) located in the storage container (9), results depending on the measurement variable (ts1), by a dosing unit (12), influenced by the control unit (8).

Description

Die Erfindung betrifft ein Verfahren zum Waschen von Wäsche in einer Waschmaschine mit einem Laugenbehälter, in dem eine Trommel drehbar gelagert ist, mit einer Steuereinrichtung und einer mit der Steuereinrichtung in Verbindung stehenden Messeinrichtung zum Erfassen einer Messgröße, welche vom Saugverhalten der zu waschenden Wäsche abhängig ist, wobei das Verfahren ein Einspülen einer ersten Menge eines Waschmittels in den Laugenbehälter beinhaltet.The invention relates to a method for washing laundry in a washing machine a tub, in which a drum is rotatably mounted, with a control device and a measuring device connected to the control device for detection a measured variable which is dependent on the suction behavior of the laundry to be washed, where the method involves rinsing a first amount of a detergent into the tub includes.

Es besteht seit langem der Wunsch, die im gewerblichen Bereich und in Haushaltswaschmaschinen angewandten Waschverfahren hinsichtlich ihres Waschmittelverbrauchs unter Berücksichtigung ökologischer und ökonomischer Gesichtspunkte zu optimieren. Um diese Ziele zu erreichen, sind Dosierverfahren notwendig, welche für den jeweiligen Waschprozess eine optimale Waschmittelkonzentration gewährleisten, die einerseits ein zufriedenstellendes Waschergebnis sichert und andererseits eine Überdosierung ausschließt.There has long been a desire in the commercial sector and in household washing machines applied washing methods with regard to their detergent consumption taking into account optimize ecological and economic aspects. To these goals To achieve this, dosing processes are necessary, which are appropriate for the respective washing process Ensure optimal detergent concentration, on the one hand, a satisfactory Washing result ensures and on the other hand prevents overdosing.

Waschmaschinen mit einer automatischen Dosiereinrichtung sind allgemein aus der DE 39 01 686 A1 bekannt. Dort wird ein Dosierverfahren beschrieben, bei dem die Dosiermenge des Waschmittels in Abhängigkeit von der zum Beginn des Waschgangs zugelaufenen Wassermenge berechnet und anschließend dem Laugenbehälter zugeführt wird. Diese Wassermenge lässt zwar einen Rückschluss auf die Wäsche-Beladungsmenge in der Trommel zu, aufgrund der späten Einspülung wird jedoch ein Teil des Waschgangs ohne Waschmittel durchgeführt, was die Reinigungswirkung verschlechtert. Außerdem wird der Wasserverbrauch durch die zusätzlich zum Einspülen des Waschmittels benötigte Menge erhöht.Washing machines with an automatic dosing device are generally from the DE 39 01 686 A1 known. There a dosing process is described in which the dosing amount of the detergent as a function of that which was supplied at the start of the wash cycle Water volume is calculated and then fed to the tub. This The amount of water allows a conclusion to be drawn about the amount of laundry loaded in the drum due to the late wash-in, however, part of the wash cycle is without detergent carried out, which worsens the cleaning effect. It also reduces water consumption increased by the amount required to wash in the detergent.

Es sind außerdem Waschmaschinen bekannt (DE-AS 11 57 578), bei denen eine automatische Dosierung in Abhängigkeit vom Gewicht der Wäsche erfolgt. Solche bedürfen einer zusätzlichen Einrichtung zum Ermitteln des Wäschegewichts.There are also washing machines known (DE-AS 11 57 578), in which an automatic Dosage depends on the weight of the laundry. Such require an additional one Device for determining the weight of the laundry.

Aus der DE 44 38 760 A1 ist ein Verfahren zur Ermittlung einer von der Wäscheart und der Wäschemenge abhängigen Beladungsstufe in einer Waschmaschine bekannt, bei dem unter anderen Messgrößen auch das Saugverhalten der Wäsche ausgewertet wird.DE 44 38 760 A1 describes a method for determining a type of laundry and the Amount of laundry dependent load level in a washing machine known in the under other measured variables, the suction behavior of the laundry is also evaluated.

Aus der nach § 3 (2) PatG als Stand der Technik geltenden deutschen Patentanmeldung DE 100 29 505.3 ist ein Verfahren zum Dosieren von Waschmittel in eine aus einem Wasser-Waschmittelgemisch bestehende Waschflüssigkeit, die sich im Laugenbehälter einer Wasch-maschine befindet, bekannt. Bei diesem zweistufigen Dosierverfahren wird die zweite, automatisch zudosierte Waschmittelmenge in Abhängigkeit von der Oberflächenspannung der Waschflüssigkeit nach dem ersten Dosierschritt bestimmt.From the German patent application that is deemed to be state of the art according to § 3 (2) PatG DE 100 29 505.3 is a method for dosing detergent into a water / detergent mixture existing washing liquid, which is in the tub of a washing machine is known. With this two-stage dosing process, the second, automatically added detergent amount depending on the surface tension of the Wash liquid determined after the first dosing step.

Der Erfindung stellt sich das Problem, ein Verfahren zum Waschen von Wäsche der eingangs genannten Art zu offenbaren, bei der eine automatische Dosierung einer Waschmittelmenge erfolgt, die einerseits auf die Beschaffenheit der Wäsche-Beladung der Trommel abgestimmt ist und die andererseits möglichst früh ihre Reinigungswirkung entfaltet.The invention presents the problem of a method for washing laundry at the outset to disclose the type mentioned, in which an automatic dosage of a detergent amount takes place, on the one hand tailored to the nature of the laundry load of the drum and which, on the other hand, develops its cleaning effect as early as possible.

Erfindungsgemäß wird dieses Problem durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this problem is solved by a method with the features of the patent claim 1 solved. Advantageous refinements and developments of the invention result arising from the following subclaims.

Die Vorteile des erfindungsgemäß ausgebildeten Verfahrens bestehen darin, dass zu seiner Durchführung keine Wiegevorrichtung gebraucht wird und dass bereits zu Beginn des Waschgangs ein Waschmittel-Wasser-Gemisch auf die Wäsche einwirkt.The advantages of the method designed according to the invention are that it is No weighing device is used and that already at the beginning of the washing cycle a detergent-water mixture acts on the laundry.

Ein Ausführungsbeispiel einer zur Durchführung des Verfahrens zum Waschen von Wäsche geeigneten Waschmaschine und des Verfahrens selbst ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Die Steuerung und Auswertung des Wasserzulaufs und die davon abhängige Steuerung der Dosierung zu Beginn des Waschprogramms ist in Zeitdiagrammen dargestellt. Es zeigt

Figur 1
die Schemaskizze einer Trommelwaschmaschine mit Dosiereinrichtung;
Figur 2
untereinander:
  • den Niveaustand im Laugenbehälter über der Zeit;
  • die Einschaltzeiten des Magnetventils;
  • die Einschaltzeiten der Pumpe der Dosiereinrichtung.
    •
    An exemplary embodiment of a washing machine suitable for carrying out the method for washing laundry and the method itself is shown purely schematically in the drawings and is described in more detail below. The control and evaluation of the water supply and the dependent control of the dosage at the beginning of the washing program is shown in time diagrams. It shows
    Figure 1
    the schematic diagram of a drum washing machine with metering device;
    Figure 2
    among themselves:
  • the level in the tub over time;
  • the on times of the solenoid valve;
  • the switch-on times of the pump of the dosing device.

    • Der Grundaufbau einer Waschmaschine zur Durchführung des erfindungsgemäßen Verfahrens zum Waschen von Wäsche ist allgemein bekannt, beispielsweise aus der DE 44 31 654 A1. Die in Figur 1 dargestellte Waschmaschine besitzt eine Trommel (1), die in bekannter Weise in einem Laugenbehälter (2) drehbar gelagert ist. Sie wird durch einen Motor (3) angetrieben. Ein mit dem Motor gekoppelter Tachogenerator (nicht dargestellt) greift ein Motordrehzahlsignal zur Regelung ab. Zur Wasserstandsmessung ist mit dem unteren Bereich des Laugenbehälters (2) eine Steigleitung (4) verbunden, innerhalb der ein Niveausensor (5) in Form eines analogen Drucksensors angeordnet ist. Der Zulauf des Frischwassers in den Laugenbehälter (2) erfolgt über eine Leitung, in der sich ein Magnetventil (6) befindet. Vorzugsweise kommen Magnetventile mit einem geringen Volumenstrom-Toleranzbereich über einen möglichst großen Druckbereich zum Einsatz. Der Wasserzulauf erfolgt abhängig von der später beschriebenen Ausführungsform der Dosiereinrichtung entweder über einen Waschmitteleinspülkasten (7) oder direkt in den Laugenbehälter (2). Zusätzlich kann im Wasserzulauf ein Volumenstromzähler zur Messung der Wassermenge vorhanden sein (nicht dargestellt).The basic structure of a washing machine for carrying out the method according to the invention for washing laundry is generally known, for example from DE 44 31 654 A1. The washing machine shown in Figure 1 has a drum (1) which in a known manner a tub (2) is rotatably mounted. It is driven by a motor (3). On a tachometer generator (not shown) coupled to the motor accesses an engine speed signal Regulation from. To measure the water level, use the lower area of the tub (2) a riser (4) connected, within which a level sensor (5) in the form of an analog Pressure sensor is arranged. The fresh water is fed into the tub (2) via a line in which there is a solenoid valve (6). Solenoid valves are preferred with a small volume flow tolerance range over the largest possible pressure range for use. The water supply depends on the embodiment described later the dosing device either via a detergent dispenser drawer (7) or directly into the tub (2). In addition, a volume flow meter can be used in the water inlet Measurement of the amount of water to be present (not shown).

    Zentrales Steuerungsorgan der Waschmaschine ist eine Mikroprozessor-Steuerung (8). Sie regelt die Motordrehzahl, die Wassertemperatur und den Wasserstand im Laugenbehälter (2) mit Hilfe von Stellelementen (z. B. Leistungsteil, Heizungsrelais, Magnetventil), an die sie Steuersignale abgibt. Hierzu empfängt sie von Sensoren (z. B. Tachogenerator, Temperatursensor, Niveausensor) Zustandssignale. Außerdem beinhaltet die Mikroprozessor-Steuerung (8) eine Zeitmesseinrichtung, einen Datenspeicher zur Ablage von Zeitdaten, die durch die Zeitmesseinrichtung ermittelt werden und einen ersten und einen zweiten Festwertspeicher.The central control element of the washing machine is a microprocessor control (8). she regulates the engine speed, the water temperature and the water level in the tub (2) with the help of control elements (e.g. power section, heating relay, solenoid valve) to which they Emits control signals. To do this, it receives from sensors (e.g. tachometer generator, temperature sensor, Level sensor) status signals. It also includes the microprocessor control (8) a time measuring device, a data memory for storing time data, the be determined by the time measuring device and a first and a second Only memory.

    Zusätzlich zu dieser in der DE 44 31 654 A1 beschriebenen Ausstattung besitzt die Waschmaschine eine Dosiereinrichtung, mit der eine durch die Mikroprozessor-Steuerung (8) gesteuerte automatische Zugabe von Waschmittel in den Laugenbehälter (2) der Waschmaschine erfolgt. Diese Zugabe kann über eine direkt in den Laugenbehälter (2) mündende Leitung (wie in der DE 39 01 686 A1 beschrieben) oder über den Waschmitteleinspülkasten (7) der Waschmaschine erfolgen. Grundvoraussetzung ist lediglich ein Vorratsbehälter zur Aufnahme des Waschmittels und eine mit dem Vorratsbehälter verbundene Fördereinrichtung, die eine von der Mikroprozessor-Steuerung (8) vorgegebene Menge an den Laugenbehälter (2) oder den Waschmitteleinspülkasten (7) abgeben kann.In addition to the equipment described in DE 44 31 654 A1, the washing machine has a dosing device with which a microprocessor control (8) controlled automatic addition of detergent to the washing machine's tub (2) he follows. This addition can be made via a directly opening into the tub (2) Line (as described in DE 39 01 686 A1) or via the detergent dispenser drawer (7) the washing machine. The basic requirement is only a storage container for reception of the detergent and a conveyor connected to the reservoir, the a quantity to the tub (2) predetermined by the microprocessor control (8) or deliver the detergent dispenser drawer (7).

    In einer konkreten Ausführungsform wird ein Flüssigwaschmittel in einem Vorratsbehälter (9) außerhalb der Waschmaschine gelagert. Zur Förderung des Waschmittels (11) trägt eine in dem Behälter (9) platzierte Hohllanze (10) an ihrem oberen Ende eine Dosierpumpe (12), deren Druckseite mit einem Schlauch (13) verbunden ist. Die andere Seite des Schlauchs (13) endet in einem Anschlussstutzen (14) des Waschmitteleinspülkastens (7) auf der Gehäuserückwand der Waschmaschine. Die Spannungsversorgung des Pumpenmotors erfolgt über ein Leistungsteil (nicht dargestellt) in der Waschmaschine und wird über ein Relais (nicht dargestellt) durch die Mikroprozessor-Steuerung (8) gesteuert. Um bei Waschmitteln konzentrationsbedingte Unterschiede zu berücksichtigen, können im ersten Festwertspeicher Pumpzeiten abgelegt werden, die der Förderung von 100% einer vom Hersteller empfohlenen Menge für ein Standardwaschprogramm entsprechen. Dies kann über Einstellvorrichtungen (nicht dargestellt) oder andere Dateneingabe-Vorrichtungen erfolgen.In a specific embodiment, a liquid detergent is stored in a storage container (9). stored outside the washing machine. To promote the detergent (11) carries a the container (9) placed hollow lance (10) at its upper end a metering pump (12), the Pressure side is connected to a hose (13). The other side of the hose (13) ends in a connecting piece (14) of the detergent dispenser drawer (7) on the rear wall of the housing of the washing machine. The pump motor is powered by a power unit (not shown) in the washing machine and is through a relay (not shown) by the microprocessor control (8) controlled. For concentration-related detergents Taking into account differences, pump times can be stored in the first read-only memory be the promotion of 100% of a quantity recommended by the manufacturer for a Standard washing program correspond. This can be done using adjustment devices (not shown) or other data entry devices.

    Der Ablauf der Wasserzulauf- und Waschmitteldosier-Phase, welche den für die Erfindung wesentlichen Bestandteil des Verfahrens zum Waschen von Wäsche in einer Waschmaschine bildet, ist im folgenden näher beschrieben (s. Figur 2):
    Zu Beginn des Waschprogramms öffnet die Mikroprozessor-Steuerung (8) das Magnetventil (6) und veranlasst den Zulauf von Wasser bis zu einem ersten Füllniveau N1. Diese Niveau N1 ist von der Art des gewählten Waschprogramms, insbesondere hinsichtlich der eingestellten Textilart, abhängig. Mit dem Erreichen des ersten Füllniveaus nach der Einschaltdauer A wird das Ventil (6) geschlossen. Am Anfang dieses ersten Wassereinlaufs erfolgt gleichzeitig die automatische Dosierung einer ersten Menge des Flüssigwaschmittels (11) aus dem Vorratsbehälter (9). Die Mikroprozessor-Steuerung (8) schaltet hierzu die Dosierpumpe (12) für eine Dauer (I) ein, deren Wert etwa der Hälfte der im ersten Festwertspeicher abgelegten Pumpzeit entspricht. Alternativ zu dieser automatischen Dosierung kann als erste Menge ein manuell in den Waschmitteleinspülkasten (7) eingegebenes Mittel eingespült werden. Entsprechende Wahlmöglichkeiten zwischen automatischer Dosierung und manueller Waschmittelzugabe müssen dann an der Waschmaschine vorgesehen sein.    The course of the water supply and detergent dosing phase, which forms the essential part of the method for washing laundry in a washing machine, is described in more detail below (see FIG. 2):
    At the beginning of the washing program, the microprocessor control (8) opens the solenoid valve (6) and causes water to flow in up to a first filling level N 1 . This level N 1 depends on the type of washing program selected, particularly with regard to the type of textile set. When the first filling level is reached after the operating time A, the valve (6) is closed. At the beginning of this first water inlet, the automatic metering of a first quantity of the liquid detergent (11) from the storage container (9) takes place at the same time. For this purpose, the microprocessor control (8) switches on the metering pump (12) for a duration (I), the value of which corresponds to approximately half of the pumping time stored in the first read-only memory. As an alternative to this automatic dosing, a detergent manually entered into the detergent dispenser drawer (7) can be flushed in as the first quantity. Corresponding options between automatic dosing and manual addition of detergent must then be provided on the washing machine.

    Im Anschluss an den ersten Wassereinlauf wird die Trommel (1) gedreht und der in der Trommel (1) enthaltene Wäscheposten saugt einen Teil der aus Wasser und Waschmittel bestehenden Waschflüssigkeit auf. Hierdurch sinkt das Niveau unter ein Mindestniveau Nmin ab. Die Zeit bis zum Absinken auf diese Mindestniveaus wird als erste Saugzeit tS1 gemessen. Da sowohl das Anfangsniveau (= N1) als auch das Endniveau (= Nmin) bekannt sind, kann aus der Differenz und tS1 der zeitliche Verlauf der Niveauabsenkung ermittelt werden. Dieser ist ein Maß für das Saugverhalten der Wäsche. Der Zeitwert tS1 wird im Datenspeicher abgelegt und zu einem späteren Zeitpunkt abgerufen.Following the first water inlet, the drum (1) is rotated and the laundry item contained in the drum (1) absorbs part of the washing liquid consisting of water and detergent. As a result, the level drops below a minimum level N min . The time until it drops to these minimum levels is measured as the first suction time t S1 . Since both the initial level (= N 1 ) and the final level (= N min ) are known, the time course of the level reduction can be determined from the difference and t S1 . This is a measure of the suction behavior of the laundry. The time value t S1 is stored in the data memory and called up at a later time.

    Bei Erreichen des Mindestniveaus Nmin wird aus der Saugzeit ein zweites Füllniveau N2 berechnet und das Magnetventil bis zum Erreichen diese Füllniveaus für die Dauer B geöffnet. Im Allgemeinen stellt sich dann nach einer erneuten Saugphase ein Niveau oberhalb Nmin ein. Sinkt das Niveau aufgrund eines stark saugfähigen Wäschepostens erneut unter Nmin, erfolgt ein zusätzlicher Wassereinlauf.When the minimum level N min is reached, a second filling level N 2 is calculated from the suction time and the solenoid valve is opened for the duration B until these filling levels are reached. In general, a level above N min is then set after a new suction phase. If the level drops again below N min due to a highly absorbent laundry item, an additional water inlet takes place.

    Im Anschluss daran erfolgt ein automatisches Zudosieren einer von der Saugzeit abhängigen zweiten Menge Waschmittel (11) aus dem Vorratsbehälter (9). Hierzu ruft die Mikroprozessor-Steuerung (8) zunächst die abgespeicherte Saugzeit tS1 aus dem Datenspeicher ab und ermittelt in Abhängigkeit davon und von der im ersten Festwertspeicher abgelegten Pumpzeit eine im zweiten Festwertspeicher abgelegte zweite Pumpzeit (II). Nach dem Einschalten der Dosierpumpe (12) für diese zweite Pumpzeit erfolgt eine kurze Öffnung des Magnetventils (6) für einen Zeitraum C, um Waschmittelreste aus dem Waschmitteleinspülkasten (7) in den Laugenbehälter (2) zu spülen.This is followed by an automatic metering of a second quantity of detergent (11) depending on the suction time from the storage container (9). For this purpose, the microprocessor controller (8) first retrieves the stored suction time t S1 from the data memory and, depending on this and on the pumping time stored in the first read-only memory, determines a second pumping time (II) stored in the second read-only memory. After switching on the metering pump (12) for this second pumping time, the solenoid valve (6) is opened briefly for a period C in order to flush detergent residues from the detergent dispenser drawer (7) into the tub (2).

    Anstelle der Saugzeiten kann zur Ermittlung des Saugverhaltens der Wäsche mit einem Volumenstromzähler die Wassermenge erfasst werden, die zum Beibehalten eines vorgegebenen Niveaus oberhalb Nmin im Laugenbehälter (2) notwendig istInstead of the suction times, the volume of water that is necessary to maintain a predetermined level above N min in the tub (2) can be recorded with a volume flow meter to determine the suction behavior of the laundry

    Claims (4)

    Verfahren zum Waschen von Wäsche in einer Waschmaschine mit einem
    Laugenbehälter (2), in dem eine Trommel (1) drehbar gelagert ist, mit einer Steuereinrichtung (Mikroprozessor-Steuerung 8) und einer mit der Steuereinrichtung in Verbindung stehenden Messeinrichtung (Niveausensor 5, Zeitmesseinrichtung) zum Erfassen einer Messgröße (tS1), welche vom Saugverhalten der zu waschenden Wäsche abhängig ist, wobei das Verfahren ein Einspülen oder Dosieren einer ersten Menge eines Waschmittels in den Laugenbehälter (2) beinhaltet,
    dadurch gekennzeichnet, dass im Anschluss an das Erfassen der Messgröße (tS1) ein automatisches Zudosieren einer von der Messgröße (tS1) abhängigen zweiten Menge eines in einem Vorratsbehälter(9) befindlichen Waschmittels (11) durch eine von der Steuereinrichtung (8) beeinflusste Dosiereinrichtung (12) erfolgt.    Process for washing laundry in a washing machine using a
    Suds container (2), in which a drum (1) is rotatably mounted, with a control device (microprocessor control 8) and a measuring device (level sensor 5, time measuring device) connected to the control device for detecting a measured variable (t S1 ), which is dependent on the suction behavior of the laundry to be washed, the method comprising flushing or dosing a first amount of a detergent into the tub (2),
    characterized in that , following the detection of the measurement variable (t S1 ), an automatic metering in of a second quantity of a detergent (11) located in a storage container (9) dependent on the measurement variable (t S1 ) was influenced by a control device (8) Dosing device (12) takes place.         Verfahren zum Waschen von Wäsche nach Anspruch 1,
    dadurch gekennzeichnet, dass zur Ermittlung des Saugverhaltens der Wäsche der Laugenbehälter (2) bis zu einem vorgegebenen Niveau befüllt wird und anschließend der zeitliche Verlauf des Absinkens des Flüssigkeitsniveaus als Maß für die Saugfähigkeit der Wäsche erfasst wird.    A method of washing laundry according to claim 1,
    characterized in that, in order to determine the suction behavior of the laundry, the tub (2) is filled to a predetermined level and then the time course of the drop in the liquid level is recorded as a measure of the absorbency of the laundry.         Verfahren zum Waschen von Wäsche nach Anspruch 1,
    dadurch gekennzeichnet, dass zur Ermittlung des Saugverhaltens der Wäsche die Wassermenge erfasst wird, die zum Beibehalten eines vorgegebenen Niveaus im Laugenbehälter (2) notwendig ist.    A method of washing laundry according to claim 1,
    characterized in that, in order to determine the suction behavior of the laundry, the amount of water which is necessary to maintain a predetermined level in the tub (2) is recorded.         Verfahren zum Waschen von Wäsche nach mindestens einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, dass die Dosiereinrichtung (12) als erste Waschmittelmenge ca. 50% der für einen Waschgang mit maximaler Trommelbeladung vom Hersteller empfohlenen Waschmittelmenge abgibt.    Method for washing laundry according to at least one of claims 1 to 3,
    characterized in that the metering device (12) delivers as the first detergent quantity approximately 50% of the detergent quantity recommended by the manufacturer for a washing cycle with a maximum drum load.
    EP01127681A 2000-12-13 2001-11-21 Method for washing laundry Ceased EP1215329A3 (en)

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    DE10062111A DE10062111C1 (en) 2000-12-13 2000-12-13 Process for dosing detergent
    DE10062111 2000-12-13

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    EP1215329A2 true EP1215329A2 (en) 2002-06-19
    EP1215329A3 EP1215329A3 (en) 2003-07-09

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    WO2011131260A1 (en) * 2010-04-20 2011-10-27 Henkel Ag & Co. Kgaa Metering system for use in conjunction with a water-conducting household appliance such as a washing machine, dishwasher, clothes dryer or the like
    EP2405052A1 (en) * 2010-07-06 2012-01-11 Samsung Electronics Co., Ltd. Detergent feeding apparatus and washing machine having the same
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    EP1997949A1 (en) 2007-06-01 2008-12-03 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. A washing machine
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    WO2011131260A1 (en) * 2010-04-20 2011-10-27 Henkel Ag & Co. Kgaa Metering system for use in conjunction with a water-conducting household appliance such as a washing machine, dishwasher, clothes dryer or the like
    EP2405052A1 (en) * 2010-07-06 2012-01-11 Samsung Electronics Co., Ltd. Detergent feeding apparatus and washing machine having the same
    CN102345223B (en) * 2010-08-03 2015-11-25 海尔集团公司 A kind of detergent embarking device for washing machine
    CN102345223A (en) * 2010-08-03 2012-02-08 海尔集团公司 Automatic detergent feeding device for washing machine
    WO2016102011A1 (en) * 2014-12-23 2016-06-30 Electrolux Appliances Aktiebolag Method for washing laundry in a laundry washing machine with an automatic dosing device and laundry washing machine
    EP3680378A1 (en) * 2014-12-23 2020-07-15 Electrolux Appliances Aktiebolag Method for washing laundry in a laundry washing machine with an automatic dosing device and laundry washing machine
    EP3680379A1 (en) * 2014-12-23 2020-07-15 Electrolux Appliances Aktiebolag Method for washing laundry in a laundry washing machine with an automatic dosing device and laundry washing machine

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