EP2050859B1 - Method for operating a dosing device for a washing machine, dosing device and washing machine - Google Patents

Description

The invention relates to a method for operating a metering device for a washing machine with a tub for holding washing liquid, with at least one reservoir for receiving a treating agent such as detergent or washing or rinsing additives, an input means for selecting and activating the washing or treatment cycle, a control device for carrying out the activated washing or treatment cycle, wherein the treatment agent is conveyed to the tub at the beginning of the activated washing cycle or treatment cycle.

The invention further relates to a metering device for a washing machine, comprising at least one storage container for receiving a treatment agent such as detergent or washing or rinsing additives, an input means for selecting and activating the filled in the reservoir treatment agent, a control device for carrying out the above method, with a control device of the washing machine is in operative connection, and at least one connecting line, with which the treatment agent can be conveyed to the tub of the washing machine.

The invention further relates to a washing machine, comprising a tub for receiving washing liquid and a control device, with a metering device, which is in operative connection with the control device of the washing machine, and at least one connecting line, with which the treatment agent can be conveyed to the tub of the washing machine, wherein the control device of the washing machine is provided to perform the above-mentioned method for operating the metering device.

In home washing machines, the detergent is usually added by hand to a chamber, which is rinsed with water into the tub after the start of the wash program. The user must comply with the dosing instructions for the detergent used in each case and make sure that he fills the correct amount in the chamber. In order to simplify the loading of detergent or other additives, such as fabric softener, automatic metering devices are used in which a larger amount of detergent is stored in a reservoir. When starting a washing program, the preset amount of detergent is then supplied to the washing liquid, so that the user does not have to fill in the detergent quantity with each washing cycle must pay attention. Especially with commercially used washing machines such dosing devices are often used.

The US 2006/107705 A1 describes the automatic dosing of a laundry care composition in an automatic washing machine. The device comprises a venturi nozzle or a pump for metering the laundry care composition.

From the DE 101 48 454 A1 is a household appliance with a device known by the working process additives can be supplied, the dosage must be made by an operator. It also has a microcomputer and a display display for texts, in which a display panel for the display of the presumably required amount of additive in the work process is present.

The EP 0 844 326 A1 describes a washing machine equipped with a control which solves the problem of wasting primary or external resources (energy, water, gas, etc.) by alerting the operator by means of feedback instruments or dialogue devices during operation of the machine (ie type of program, Options, etc.) draws attention to the consumption levels associated with their choices.

DE 44 21 518 A1 describes a metering device for the metered dispensing of powdered and / or liquid detergents with at least two on a holder, preferably on a holder plate removably attached containers with one provided at the bottom of the container metering valve with cup holder for removable attachment of a cup.

DE 14 35 031 A1 describes a washing machine in which the individual program sections with respect to different operating variables (eg time, lye temperature, liquor level, size of the mechanical component, detergent or the like.) Are adjustable. According to the invention, an improvement of washing machines of this type can be achieved in that the desired value of one or possibly several operating variables is determined by a measurement of the machine itself in a preliminary prewash cycle, and that the machine this setpoint in a device for setting the Program control by the user indicates.

In the DE 33 03 292 A1 The aim is to make it as easy as possible for users to add washing or rinsing agents and to properly associate washing or rinsing agents with the right dosing channels. Transport containers have been carrying bar code labels for some time or may include other media for automatically storing, pricing and discounting the merchandise in wholesaling and retailing.

This disclosure proposes that in the data label information about the type and / or Dosiermengen and / or the concentration of the detergent or detergent are included and the content of this label is transmitted by means of a reading device in the control device of the device.

From the DE 39 01 686 A1 is a washing machine with a metering device for liquid detergents known in which the type of treatment agent can be preset. Here, the treatment agent, for example, liquid detergent, pumped by a pump from the reservoir into the tub, the dose must be selected by the user. If the user fills fabric softener in the reservoir instead of detergent, so he has to announce this by means of a lever adjustment of the control device, so that the treatment agent is pumped into the tub only in the rinse cycle.

Another metering device for liquid additives is known from the sold since early 2006 washing Miele W 4449 Liquid Wash. Here, a storage container for liquid detergent outside the washing machine is arranged and connected by means of a hose to the washing machine. Within the washing machine, the metering pump is arranged, which promotes the liquid or viscous detergent via a hose into the lower region of the tub. The metering pump is controlled by the control device of the washing machine, which determines the respective quantity of detergent to be metered on the basis of the switch-on time. The reference quantity, which corresponds to the dosing instructions of the detergent manufacturer, is set in advance. In order to activate the automatic dosing, the contamination must be adjusted and an additional operating handle must be actuated, whereby the specified contamination is taken into account for the amount of detergent to be dosed.

From the DE 10 2006 009 807 A1 It is known to mix the treatment agent for a washing machine individually. Here, the washing machine comprises a metering device in which the individual active substances are stored in individual containers. To operate the metering device, the respective treatment agent from the plurality of individual active substances is mixed together and fed to the tub on the basis of the pollution and the type of laundry to be washed. Such a complex process is not very suitable for the household, since the production or mixing of detergents from individual active ingredients can only be expected of particularly qualified persons.

In the EP 1 318 225 A1 a metering system is disclosed which, depending on the program state, conveys the treatment agent to the washing machine. It is fixed, too which time or program state the respective agent is dosed. This is a fixed allocation of the respective funds.

In all known methods for operating a metering device, the user must consciously activate the metering device before activating the washing program or, alternatively, charge the detergent compartment with washing or treating agent. For this purpose, the user must always know and consider the suitability of the detergent for the particular laundry items to be washed.

The invention is therefore based on the object to make automatic dosing more reliable and easier for the user.

According to the invention the object is achieved by a method having the features of claim 1, by a metering device having the features of claim 11 and by a washing machine having the features of claim 12. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

The advantages attainable with the invention are that the comfort is increased and the reliability for the washing results is improved. The user no longer needs to check for each wash which treatment agent is best suited for their laundry items to be washed. In addition, it is ensured that special types of detergents or treatment agents can be used for special treatments.

The method is characterized in that the selection of the treatment agent to be metered from the storage container takes place on the basis of suitability information for the respectively selected washing or treatment cycle. This determines when washing cycle or wash program is selected which wash item is washed or treated.

In an expedient embodiment, a set of suitability information is present for each treatment agent received in the storage container, of which in each case a single suitability information is stored for a respective washing or treatment cycle which is used to select the treatment agent to be metered. This ensures that as many factors as possible that affect the suitability of the laundry items to be washed are taken into account.

Furthermore, according to the invention, automatic dosing from one of the storage containers takes place only when the suitability information at least reaches a limit value for the selected washing or treatment cycle. If the qualifying information is similar to school grades is constructed in Germany, for example, 1 to 6, wherein the 1 is very suitable and the 6 is unsuitable, a 3 can be provided as a limit. This means that for all washing cycles for which a suitability of 3 or better is specified, the detergent is dosed automatically. Automatic dosing from one of the reservoirs will not occur if the fitness information does not reach a limit for the selected wash or treatment cycle. When using the above-mentioned school grading system, no detergent would be automatically dosed for all wash cycles for which a suitability is less than 3, ie greater than 3, specified. This ensures that the laundry items to be washed are not damaged by unsuitable treatment agents. At least it is ensured that detergent with reduced washing action is used, so that unnecessary wastewater pollution is avoided.

In an expedient development, user information is output if the control device is not informed of suitability on the basis of the suitability information for the selected washing or treatment cycle. Thus, the user has the opportunity to otherwise supply a suitable detergent to the washing machine, for example via the detergent dispensing compartment or by means of a dosing ball placed in the drum.

In an advantageous embodiment, the metering device comprises at least two reservoirs for receiving a respective treatment agent such as detergent or washing or rinsing additives, wherein for each recorded in each of the reservoir treatment agent for each wash cycle or treatment cycle respectively a suitability information is stored, which is used to select the treatment agent to be dosed is used. This makes it possible for a large number of possible different items of laundry to be automatically charged with detergent from the metering device, since each storage container can be filled with different treatment agents for which a separate set of suitability information is assigned.

In an expedient development, the suitability information for the treatment agent in the first storage container is compared with the suitability information for the treatment agent in the second storage container, wherein the container is then selected for which a better fitness information for the selected treatment cycle is available. The user no longer has to worry about the selection of the container, so that the laundry washing for the user is greatly simplified. Misdosing is almost impossible.

In a particularly advantageous embodiment, the suitability information for the selected reservoir is displayed to the user as a suggestion, the activation of the selected or the unselected storage container after a confirmation action of the user takes place. In this case, the user can still intervene, or not allow automatic dosing, if he wants to use a different treatment agent, as in the storage containers. This can happen especially when the suitability information is close to the limit, so that the suitability is given, but is not optimal for the laundry items to be treated. He can also activate the reservoir in which the less suitable detergent is stored. However, this is only allowed if the suitability information for the container with the less suitable treatment agent at least reaches the predetermined limit for the selected washing or treatment cycle.

In some cases, it may be necessary to wash or handle a laundry item for which no suitable treating agent is stored in the metering device. In this case, automatic dosing from one of the reservoirs will not occur if the fitness information does not reach the limit for the selected wash or treatment cycle. The limit analysis can be done as already described above.

In an expedient embodiment, a suitability information is stored as a set for a treatment agent for each adjustable washing or treatment cycle, so that any selectable washing or treatment cycle and the laundry items to be treated can be taken into account.

To simplify the setting of the fitness information, it is advantageous to maintain a plurality of pre-stored sets of fitness information that can be selected or activated by the user during the fill. It is expedient to store sets of fitness information for powdered heavy duty detergent, powdered colored laundry detergent, powdered mild detergent, powdered wool detergent, liquid heavy duty detergent, liquid laundry detergent, liquid mild detergent or liquid wool detergent, which are then selected as needed. As a result, the most frequently used washing or treating agents can be used in the metering device with the aid of the suitability information.

In an expedient development, the suitability information can be subsequently changed and stored if detergents are used which have a different fitness characteristic than is known today.

The washing machine according to the invention, which is suitable to carry out the method described above, has a housing with a rear wall, at which a connection for the water supply attached to the solenoid valve and / or the water switch. In an expedient embodiment, the connection for the water to the metering device and the connection for the liquor that can be conveyed out of the metering device are also attached to the rear wall. In this way, a metering device, in which the washing or treating agent can be premixed to a concentrated liquor, connected to the washing machine and integrated into the washing cycle or program sequence.

In another embodiment, the washing machine has a metering device comprising at least one reservoir from which the treatment agent can be pumped via a line in the Einspülkasten or tub of the washing machine by means of a pump. This connection option is particularly suitable for a variety of different treatment agents, since there is only one hose connection to the washing machine for each treatment agent. This is particularly advantageous in commercial washing machines, since large containers of liquid detergents or treatment agents are often used, in which a dip tube is used for the removal of funds.

Fig. 1, 2:

jeweils eine Waschmaschine mit angeschlossener Dosiereinrichtung in schematischer Darstellung;

Fig. 3:

ein Zustandsdiagramm für den Ablauf des erfindungsgemäßen Verfahrens;

Fig. 4:

die Eignungsinformationen Q1 für den ersten Behälter und Q2 für den zweiten Behälter in einem Diagramm und

Fig. 5, 6:

jeweils einen Satz Eignungsinformationen Q1 für andere Waschmittel in einem Diagramm.

An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. Show it

Fig. 1, 2:

in each case a washing machine with a connected metering device in a schematic representation;

3:

a state diagram for the sequence of the method according to the invention;

4:

the suitability information Q1 for the first container and Q2 for the second container in a diagram and

5, 6:

one set of suitability information Q1 for other detergents in a diagram.

According to Fig. 1 includes the sketched washing machine 1 a tub 2 with a rotatably mounted therein drum 3, which is driven by an electric motor, not shown. The metering device 18 is arranged outside the washing machine 1 and connected via connecting tubes 15, 16 with this. As an additive, for example, liquid, powdery or granular detergents, laundry additives or rinse additives such. B. used fabric softener. The metering device 18, which is designed separately from the washing machine 1, can optionally be set up or fastened at different locations. Depending on the setup conditions for the washing machine 1, it can for example be placed or fastened on the housing 4 of the washing machine 1, laterally beside or behind it. The washing machine 1 further comprises a Einspülkasten 6, in which, for example, a detergent compartment 9 is arranged for receiving the detergent for a washing cycle, the is connected via a flexible pipe 8 with the tub 2. The dispenser 6 communicates with a water supply 12 with the interposition of a solenoid valve 10 and / or a water switch 11 in connection, which can be controlled by a control device 7 and provides the flushing of detergent in the tub 2 for a single wash when the metering device 18 is not used.

For the addition of detergent from the external metering device 18, this is supplied via the feed tube 15 with water. The mixed with detergent water or alkali concentrate is conveyed through the lye line 16 to the washing machine 1, wherein on the rear wall 5 of the washing machine 1 each have a connection means 13 for the water pipe 15 and a connection means 14 for the liquor line 16 is arranged inside the washing machine 1 opens into the flexible tube 8 on the tub 2. It can also be passed directly to the tub or in the Waschmitteleinspülkasten 6. The solenoid valve 10, the water switch 11 and the metering device 18 are controlled in this embodiment by the controller 7 of the washing machine 1, which also provides the flow of the washing programs. The washing program is selected with an input means 25, for example an operating handle or a switch, wherein the start takes place with this operating handle 25 or another operating handle. Via a signal connection 26, the metering device 18 is in operative connection with the control device 7. The metering device 18 in this embodiment comprises a base unit 19 and in each case a container 20a for powdered or granular detergent and a container 20b for liquid or viscous washing or - treatment agent.

The Fig. 2 shows in side view a washing machine 1 with a rotatably mounted in a tub 2 drum 3, which is in operative connection with an electric motor, not shown, with a differently constructed metering 18. The washing machine 1 further comprises a dispenser 6, in which, for example, a Detergent compartment 9 is arranged for receiving the detergent for a wash cycle, which is connected via a flexible pipe 8 with the tub 2. The dispenser 6 communicates with a water supply 12 with the interposition of a solenoid valve 10 and / or a water switch 11 in connection, which can be controlled by a control device 7 and provides the flushing of detergent in the tub 2 for a single wash when the metering device 18 is not used.

The addition of detergent from the external metering device 18 via an external feed, which promotes the liquid detergent in the dispenser 4. In this case, by way of example, two metering pumps 17a, 17b are provided, which are controlled by the control device 7 of the washing machine 1, and in each case via a dip tube 22a, 22b or a lance, respectively a separate detergent reservoir 21a, 21b, wherein the lances 22a, 22b project into the respective container 21a, 21b. On the pumps 17a, 17b, a respective line 23a, 23b is connected to the pressure side, which is led to the dispenser 6, wherein for the lines 23a, 23b respectively a connection means 24a, 24b is provided on the rear wall 5 of the machine housing 4.

In Fig. 3 is shown in a state diagram of the sequence of the method according to the invention. After switching on the machine 1, the controller is in the ready state (ready) and awaits the selection of the program (program). As soon as a program has been selected (selection), the state change takes place in the corresponding program sequence or treatment cycle (program). Now, the fitness information Q1 valid for this selected treatment cycle for the first reservoir 20a (FIG. Fig. 1 ) or 21a ( Fig. 2 ) with the suitability information Q2 for the in the second reservoir 20b ( Fig. 1 ) or 21b ( Fig. 2 ) compared treatment agents. In a rating scheme according to the German school grading system, a smaller value means better suitability than a larger value. If the suitability information Q1 for the first storage container indicates a value greater than the suitability information Q2 for the second storage container, then the second storage container 20b (FIG. Fig. 1 ) or 21b ( Fig.2 ) for the dosage (selection container 2). If the suitability information Q1 for the first storage container indicates a value smaller than the suitability information Q2 for the second storage container, the first storage container 20a (FIG. Fig. 1 ) or 21a ( Fig.2 ) for the dosage (selection container 1). If the suitability information for both storage tanks has a value greater than 3 (Q1> 3 AND Q2> 3), then instead of one of the two storage tanks, the wax detergent drawer is selected and activated (Activate draining compartment). The metering device 18 (FIG. Fig. 1 . 2 ) is not used in this case or neither of the two reservoirs is selected and activated, whereby the user is indicated via a display means (display Einspülfach) so that he can feed the Waschmitteleinspülfach accordingly with another washing or treatment agent. If one of the two reservoirs has been selected, the appropriate fitness information Q1, Q2 is displayed to the user, who then can confirm (agree) or reject (reject) the automatic dosage. When the offered automatic dosing is confirmed, the selected reservoir is activated by means of a start command, such as the activation of a start key (Activate Container 1, Activate Container 2), and then the wash cycle (program) to the program execution state (execute program) ) is brought. After the end (end) of the program or wash cycle, the washing machine or controller is again at rest (ready) and ready to select the next wash cycle or cycle. If the user refuses (reject) the proposed reservoir, the Waschmitteleinspülung is activated via the Waschmitteleinspülfach (Activate Einspülfach), the automatic metering is switched off via the metering device. In a further embodiment, the user may select the other container if the corresponding fitness information Q1, Q2 at least reaches the threshold value G.

In Fig. 4 are the fitness information Q1 for the first container 20a, 21a ( Fig. 1 . Fig. 2 ) and Q2 for the second container 20b, 21b ( Fig. 1 . Fig. 2 ) are shown in a diagram. The suitability information for each container is summarized as a set for all selectable programs or treatment cycles. The solid line gives the fitness information Q1 for the first container 20a, 21a ( Fig. 1 . Fig. 2 ), the dashed line gives the fitness information Q2 for the second container 20b, 21b ( Fig. 1 . Fig. 2 ) at. It can clearly be seen that for the hygiene and cotton cycles, the treatment agent in the first container is rated Q1 = 1 and is thus better suited than the treatment agent in the second container with Q2 = 2.1. For the cycles (program) coloreds, easy care, delicates synthetic, automatic and express the treatment agent in the second container is more suitable. For wool and silk, the suitability information indicates both containers Q1 = 5 and Q2 = 5, so that they are therefore considered unsuitable because the limit G = 3 has been exceeded. At these settings, neither of the two containers would be activated, so detergent would be added via the detergent dispenser. As a means, in the first container 20a ( Fig. 1 ) filled a powdery heavy duty detergent and in the second container 20 b, a liquid laundry detergent. For the other selectable programs or cycles (program) dark lingerie, jeans, shirts, sportswear, outdoor and pillows, the means in the second container 20b ( Fig. 1 ) more suitable. For curtains, the treating agent in the first container 20a ( Fig. 1 ) with the suitability information Q1 = 1.9 better. In the implementation that the selected container is proposed to the user and is also activated for the washing cycle only after the confirmation, the first container is proposed in the program selection cotton since the detergent for this washing cycle is rated Q = 1. The user may accept this or the second container 20b (FIG. Fig. 1 ) whose detergent is rated Q2 = 2.1. For this wash cycle, the second container is activated since the fitness information Q2 is even better than the threshold G = 3. For the delicates or synthetics wash cycle, the second container 20b (FIG. Fig. 1 ), since the detergent for this wash cycle is rated better with Q = 2.9 than the detergent in the first container 20a (FIG. Fig. 1 ). The user can accept this or select the detergent addition via the dispenser drawer. The first container 20a ( Fig. 1 ) can not be selected or activated because its detergent with Q1 = 4.1 is rated as and thus worse than the limit G = 3. The detergent in the The first container is absolutely unsuitable for this reason, therefore this selection is rejected or not offered for the operating action.

In Fig. 5 A set of suitability information Q1 for powdery mild detergent is shown in a diagram. Clearly recognizable is the particularly good suitability of this agent for the washing cycles delicates, synthetics, sports underwear, outdoor and curtains, which are all rated approximately with the suitability information Q1 = 1.

In Fig. 6 is a set of fitness information Q1 for powdered wool detergent shown in a diagram. Clearly visible is the particularly good suitability of this agent for the washing cycles wool and silk, which are rated approximately with the suitability information Q1 = 1. Also for the treatment cycles delicate laundry, synthetic and outdoor this detergent is still well suited for which the suitability information Q1 = 2 applies. For all other washing cycles or programs, this detergent is rather unsuitable, as can be seen from the suitability information Q1> 3.

For the second container or for liquid treatment agent, for example liquid mild detergent, full, or colored laundry detergent or wool detergent, the corresponding suitability information Q2 is present in the same manner.

Claims (12)

1. Method for operating a dosing means (18) for a washing machine (1) comprising a suds container (2) for receiving washing liquid, which means comprises at least one storage container (20a, 20b, 21a, 21b) for receiving a treatment agent such as detergent or washing or rinsing additives, an input means (25) for selecting and activating the washing or treatment cycle, and a control device (7) for implementing the activated washing or treatment cycle, the treatment agent being conveyed to the suds container at the beginning of the activated washing cycle or treatment cycle, the treatment agent to be dosed from the storage container (20a, 20b, 21a, 21b) being selected on the basis of a piece of suitability information (Q1, Q2) for the washing or treatment cycle selected in each case,
   characterised in that
   the piece of suitability information is stored as a numerical value in a memory, and automatic dosing from one of the storage containers (20a, 20b, 21a, 21b) takes place if the piece of suitability information (Q1, Q2) at least reaches a threshold value (G) for the selected washing or treatment cycle, and/or
   automatic dosing from one of the storage containers (20a, 20b, 21a, 21b) does not take place if the piece of suitability information (Q1, Q2) does not reach a threshold value (G) for the selected washing or treatment cycle.
2. Method for operating a dosing means (18) according to claim 1,
   characterised in that,
   for the treatment agent received in the storage container (20a, 20b, 21a, 21b), a piece of suitability information (Q1, Q2) is stored in each case for each washing cycle or treatment cycle and is used for selecting the treatment agent to be dosed.
3. Method for operating a dosing means (18) according to claim 1,
   characterised in that
   user information is output if the piece of suitability information (Q1, Q2) does not reach the threshold value (G) for the selected washing or treatment cycle.
4. Method for operating a dosing means (18) according to claim 2,
   characterised in that
   the dosing means comprises at least two storage containers (20a, 20b, 21a, 21b) for receiving in each case a treatment agent such as detergent or washing or rinsing additives; for the treatment agent received in each of the storage containers (20a, 20b, 21a, 21b), a piece of suitability information (Q1, Q2) being stored in each case for each washing cycle or treatment cycle and being used for selecting the treatment agent to be dosed.
5. Method for operating a dosing means (18) according to claim 4,
   characterised in that
   the piece of suitability information (Q1) for the treatment agent in the first storage container (20a, 21a) is compared with the piece of suitability information (Q2) for the treatment agent in the second storage container (20b, 21b), the container (20a, 20b, 21a, 21b) for which there is a better piece of suitability information (Q1, Q2) for the selected treatment cycle then being selected.
6. Method for operating a dosing means (18) according to any of claims 1 or 2 or 4 or 5,
   characterised in that
   the piece of suitability information (Q1, Q2) for the selected storage container (20a, 20b, 21a, 21b) is displayed to the user as a suggestion, activation of the selected or not-selected storage container (20a, 20b, 21a, 21b) taking place following a confirmation action by the user.
7. Method for operating a dosing means (18) according to either claim 1 or claim 4,
   characterised in that
   a piece of suitability information (Q1, Q2) is stored in each case as a set for a treatment agent for each washing or treatment cycle that can be configured.
8. Method for operating a dosing means (18) according to claim 7,
   characterised in that
   a set of suitability information (Q1, Q2) is stored in each case for a plurality of types of treatment agents, each set being selected and pre-set for a storage container (20a, 20b, 21a, 21b) depending on the stored treatment agent.
9. Method for operating a dosing means (18) according to claim 8,
   characterised in that
   the sets of suitability information (Q1, Q2) are stored and can be selected for powdered universal detergent, powdered detergent for colours, powdered light-duty detergent, powdered detergent for wool, liquid universal detergent, liquid detergent for colours, liquid light-duty detergent or liquid detergent for wool.
10. Method for operating a dosing means (18) according to claim 7,
    characterised in that
    the suitability information (Q1, Q2) can be subsequently changed and stored.
11. Dosing means (18) for a washing machine (1), comprising at least one storage container (20) for receiving a treatment agent such as detergent or washing or rinsing additives, an input means for selecting and activating the treatment agent placed in the storage container (20a, 20b, 21a, 21b), a control device for implementing the method according to any of claims 1 to 10, which device is operatively connected to a control device (7) of the washing machine (1), and at least one connecting line (16, 23a, 23b) by means of which the treatment agent can be conveyed to the suds container (2) of the washing machine (1).
12. Washing machine (1) comprising a suds container (2) for receiving washing liquid, and a control device (7), and comprising a dosing means (18) which is operatively connected to the control device (7) of the washing machine (1), and at least one connecting line (16, 23a, 23b) by means of which the treatment agent can be conveyed to the suds container (2) of the washing machine (1), wherein the control device (7) of the washing machine (1) implements the method for operating the dosing means (18) according to any of claims 1 to 10.

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