DE102017103180A1 - Method for operating a washing machine and washing machine - Google Patents

Abstract

The invention relates to a method for operating a washing machine (1) with a suds container (2) for holding water, a laundry drum (3) for receiving laundry (5) and a discharge device (6) for removing the water from the suds container (2 ), comprising: determining a loading amount of laundry (5) in the laundry drum (3); Determining a dripping saturation value defining a water binding capacity of the laundry (5); and setting a speed increase, a speed plateau height at which the laundry drum (3) is held over a speed hold period, the speed hold duration, and / or a speed decrease of the laundry drum (3) during a spin operation depending on the detected load amount and the determined drip count value. Furthermore, the invention relates to a corresponding washing machine (1).

Description

The invention relates to a method for operating a washing machine and a washing machine. The washing machine has a tub for receiving water, a washing drum for receiving the laundry, which is rotatably mounted in the tub, a drain device for removing the water from the tub and a control device for controlling methods for operating the washing machine, in particular during the implementation of a Washing program on.

In a non-printed prior art, the load of laundry in the laundry drum for parameterizing a spin phase of the wash program is taken into account during a performance of a wash program. However, it can still happen when spinning laundry that a speed of the laundry drum is increased so that a quantity of water suddenly dissolves from the laundry, which can not be removed by the drain device of the washing machine, resulting in the formation of a water jacket or a generation of foam leads.

The invention thus presents the problem of providing a method for operating a washing machine and a washing machine, in which a spinning process is optimized.

According to the invention, this problem is solved by a method having the features of patent claim 1 and a washing machine having the features of patent claim 11. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

The advantages achievable with the invention are, in addition to the introduction of a continuous process variable, which characterizes the laundry composition in that the absorbency of the laundry is taken into account when spinning. The process size can not only distinguish between absorbent and non-absorbent laundry, but variably reproduce all intermediate stages. As a result, the spinning process is better adapted to the laundry, in particular to its absorbency, so that the risk of formation of a water jacket, increased foam and even foam discharge is reduced especially in a Spülschleudern. By setting the speed holding period, a residual moisture to be reached can be improved and a washing program running time can be shortened, thereby further saving energy. A spin duration can be reduced overall, resulting in an increase in the life of the washing machine by a lower spin load.

The invention relates to a method for operating a washing machine with a tub for holding water, a laundry drum for receiving laundry and a discharge device for removing the water from the tub, comprising: determining a loading amount of laundry in the laundry drum; Determining a dripping saturation value that defines a water binding capacity of the laundry; and adjusting a speed increase, a speed plateau height at which the laundry drum is held over a speed hold period, the speed hold duration, and / or a decrease in speed of the laundry drum during a spin operation depending on the detected load amount and the detected drip saturation value.

The method provides an accurate measure of the absorbency of the laundry in the laundry drum in terms of the determined dripping saturation value that can be used to set parameters for a spin operation. With the method, a spin and wash program running time can be further shortened, which also saves energy. The spin load is lower, and the life of the washing machine and / or laundry is prolonged.

For the purposes of the invention, the term "laundry" includes textile-containing substances of all kinds, such as, for example, clothing, cloths, shoes, mop covers. For the purposes of the invention, a spinning process is a process during which the laundry drum is rotated and water is led out of the tub via the drainage device, for example by pumping it off. Usually, a washing program has several phases, in particular a detection phase, a washing phase, a rinsing phase and a spin phase. In the acquisition phase, the loading amount of the laundry is determined in the laundry drum and then fed to the tub water.

For the purposes of the present invention, the term "water" water also includes a water-containing liquid which, in addition to water, has one or more further components, for example washing and / or care agents. In the washing phase, the water is heated to a washing program predetermined by the washing temperature, then the laundry is moved by means of a rotating washing drum and after a predetermined washing time, the water is removed by means of the drain device in a spin process from the tub. In the rinsing phase find one or more rinses, in each of which the tub is supplied with water and the laundry is moved by means of rotating laundry drum, and in each case a subsequent spin process instead, in which the water is removed by means of the drainage device from the tub. The flushing phase is followed by a spin phase with a spinning process, in which the laundry drum is rotated by means of the drainage device with an increased speed compared with the centrifuging processes of the washing and rinsing phase with removal of water from the tub. In addition to these usual phases of a wash program, wash programs may have other phases. For example, a wet and dirty wash program may include a pre-dewatering phase in which a spin finish is performed prior to the wash phase to remove water from the wet wash prior to the wash phase.

For the purposes of the invention, the laundry drum is linearly or exponentially accelerated at a speed increase, the laundry drum is held plateau-like at a speed plateau height over a speed holding period, and the laundry drum is lowered linearly or exponentially at a speed reduction. Each spin cycle may include one or more speed increases and / or one or more speed plateaus, including associated speed hold durations. A run-up acceleration of the laundry drum during a spin operation can thus be carried out linearly or ramped or stepped.

Determining a loading amount of laundry in the laundry drum preferably comprises determining a mass moment of inertia of the laundry. Methods for determining a loading amount of laundry in the laundry drum by determining a moment of inertia of the laundry are known. For example, the load quantity in an inertia method is determined by a performance evaluation of the loaded laundry drum during an acceleration phase and a plateau phase. Alternatively, the loading amount of laundry in the laundry drum may include weighing the laundry in the laundry drum, for example by means of force measuring sensors. The loading amount can be determined based on a measurement of the lowering of the washing unit loaded with the laundry by calculating.

Preferably, the load quantity determined is assigned a loading stage, and the speed increase, speed plateau height, speed hold duration and / or speed decrease are set as a function of the load stage assigned to the determined load quantity and the determined dripping saturation value. Loading quantities are each assigned to a loading stage and deposited in the washing machine. The determined loading amount is compared with the stored load quantity ranges and it is assigned a loading level, in the loading amount range it is. For example, a loading stage 2 is associated with a loading amount that is in a loading amount range between 2 and 6 kg, a loading amount determined in this area is therefore assigned to the loading stage 2.

In a preferred embodiment, the speed-holding period is set as a function of the loading level assigned to the determined loading quantity, the determined dripping-saturation value and a predetermined speed-holding duration. Preferably, the load level associated with the detected load amount, the dripping saturated value and the predetermined speed hold duration are multiplied to give a value to which the speed hold duration is set. Each spin process is preferably associated with a predetermined speed hold duration. The predetermined speed hold duration may be the same or different for various spin processes, such as spin phase and spin phase spin events, and / or different wash programs. The predetermined and stored in the washing machine speed holding period is preferably a speed period, which is adapted to an average load and a mean drip saturation value, which have been adopted for the selected wash program as the average load and a mean drip saturation value at the deposit and based for example on empirical values.

In a spin operation, a predetermined speed retention duration stored in the automatic washing machine in the subcritical rotational speed range, which is preferably in the range from 100 to 150 rpm, is preferably multiplied as the dripping phase with the product of the determined charge amount and the dripping saturation value determined in order to provide a speed holding duration. which is set in the spinning process. Here, the predetermined and stored in the washing machine speed holding time is preferably a speed duration, which is adapted to an average load and a mean drip saturation value and stored in the washing machine.

In a spin operation, a predetermined and stored in the washing machine speed hold duration in the supercritical speed range, which preferably has speeds greater than 150 U / min, preferably multiplied by the product of the determined load and the determined drip saturation value to give a speed hold duration, in the spin process is set. Here, the predetermined and stored in the washing machine speed holding time is preferably a speed duration, which is adapted to an average load and a mean drip saturation value and stored in the washing machine.

Preferably, the speed increase and / or the speed plateau height are set during a spin operation during a spin phase of a wash program as a function of the load level assigned to the determined load quantity and the determined drip saturation value. More preferably, a product is determined from the determined loading amount and the determined dripping saturation value and assigned to a product level, and the speed increase and / or the speed plateau height are set as a function of the product level. Preferably, linear acceleration accelerations or ramp accelerations for speed increases for the spin phase are stored in the washing machine and assigned to a product level.

On the basis of the determined dripping saturation value and the determined loading stage, the product is preferably calculated, assigned to a product stage and based on the product stage a deposited in the automatic washing machine linear speed increase for performing the spin operation of the spin phase is selected and started and carried out at the beginning of the spin phase. Product areas are each assigned to a product level and stored in the washing machine. The calculated product is compared with the stored product areas and assigned a product level in which it is based. For example, one product level has a first threshold and a second threshold defining a product area, and another product level has a third threshold and a fourth threshold defining another product area, etc. If the product is from the determined loading level and determined Drip-up value in the product range defined by first and second limits and assigned to the product level, a speed increase is set with a ramp acceleration, while if the product of the determined loading level and the drip rate value determined in the product range defined by the third and fourth limits and the assigned to another product level, a speed increase is set with a different to the above ramp acceleration different ramp acceleration, etc.

The washing program preferably has a pre-dewatering phase, in which the laundry drum is rotated over a predetermined speed-holding period in a spin-drying operation at a pre-dewatering speed. Preferably, the speed plateau height and / or the speed-holding duration in the spin-drying operation during the pre-dehydration phase are set as a function of the loading level assigned to the determined loading amount and the determined dripping saturation value. More preferably, a product is determined from the determined loading amount and the determined dripping saturation value and assigned to a VE product stage, and the speed plateau height is set as a function of the VE product stage. VE product areas are each assigned to a VE product level and stored in the washing machine. The calculated product is compared with the stored VE product areas and assigned a VE product level in the VE product area.

For example, a VE product stage has a first VE limit and a second VE limit that define a VE product area, and another VE product level has a third VE limit and a fourth VE limit that includes another VE Defining product range, etc. When the product of the determined loading level and drip rate value is within the VE product range defined by the first and second VE limits, and is assigned to the VE product level, a plateau speed of, for example, 550 rpm is set while if the product of the determined loading level and the determined dripping saturation value is in the VE product range defined by the third and fourth VE limits and is assigned to the further VE product level, another speed plateau altitude of, for example, 650 U / m different from the above speed plateau height min is set, etc.

In a preferred embodiment, the speed increase and / or the speed plateau height are set during a spin operation during a purging phase of a wash program as a function of the determined charge amount and the determined drip saturation value. More preferably, the speed increase and / or the speed plateau height are set as a function of the loading level assigned to the determined loading quantity, the determined dripping saturation value and a foam value.

Particularly preferably, the acceleration acceleration is set as a function of the loading level assigned to the determined loading quantity, the determined dripping saturation value, the foam value and a predetermined spin duration, the predetermined spin duration being stored in the washing machine. The predetermined spin duration may vary from wash program to wash program. The speed increase and / or speed plateau height are preferably adjusted so that they are adapted to a volume flow that can be carried out of the drainage device from the tub, without leading to the formation of a water jacket, increased foam or foam discharge.

• - Zuführen einer Wassermenge in den Laugenbehälter;
• - Drehen der Wäschetrommel unter Erhöhung der Trommeldrehzahl, Bestimmen einer Füllhöhe von Wasser in dem Laugenbehälter während der Erhöhung der Trommeldrehzahl, und Ermitteln einer Abbruchdrehzahl, bei der die bestimmte Füllhöhe größer ist als eine vorbestimmte Füllhöhe;
• - Ermitteln eines Sättigungswertes der Wäsche, welcher einen Sättigungsgrad der Wäsche mit Wasser angibt, mittels der ermittelten Abbruchdrehzahl und der ermittelten Beladungsmenge; und
• - Ermitteln des Abtropfsättigungswertes mittels der Menge an zugeführtem Wasser, des Sättigungswertes und der Beladungsmenge.

In a preferred embodiment, the determination of the dripping saturation value in a first method variant has the following steps

• - Supplying a quantity of water in the tub;
• Rotating the laundry drum while increasing the drum speed, determining a level of water in the tub while increasing the drum speed, and determining a stop speed at which the determined level is greater than a predetermined level;
• - Determining a saturation value of the laundry, which indicates a degree of saturation of the laundry with water, by means of the determined Abbruchdrehzahl and the determined loading amount; and
• - Determining the dripping saturation value by means of the amount of water supplied, the saturation value and the loading amount.

These steps may be part of the aforementioned acquisition phase of the wash program. The dripping saturation value is preferably determined as a physical quantity of 1 liter of water per kg of dry weight of laundry. The step of determining a loading amount of laundry in the laundry drum is preferably performed before the step of supplying a quantity of water into the tub, so that the loading amount can be determined as dry weight. After supplying a quantity of water into the tub, the laundry drum is rotated while increasing the drum speed, the filling level of water in the tub is determined during the increase of the drum speed and the Abbruchdrehzahl is determined at which the determined level is greater than the predetermined level. The level of water in the tub during the increase in the drum speed is determined continuously or at predetermined intervals, for example, using a pressure sensor.

The filling level is preferably measured in millimeters of water with a pressure sensor positioned in the lower region of the tub, based on the operating position of the washing machine. From the determined termination speed and the determined loading amount, the degree of saturation of the laundry can be determined because there is an approximately similar relationship between the termination speed, load amount and saturation value. Subsequently, the dripping saturation value is determined by means of the amount of supplied water, the determined saturation value and the determined loading amount. The amount of water supplied to the tub can be determined, for example, by means of a volume flow meter.

In a preferred embodiment, the dripping saturation value is determined from formula (1): $$\begin{array}{l}\text{Abtropfsättigungswert}=\hfill \\ \text{Amount of water supplied}/\left(\text{load size}*\text{saturation value}\right)\hfill \end{array}$$

The dripping saturation value is determined in units of l / kg (liters per kilogram).

The saturation value is a value indicating a degree of saturation of the laundry in the laundry drum with water. Preferably, to determine the saturation value, the saturation value is read out as a function of the termination rotational speed and the loading quantity from a data memory of the automatic washing machine.

Preferably, the amount of water supplied to the tub is an amount such that the saturation value of the laundry is greater than 50%. If a saturation value less than 50% is determined, then the steps of feeding a quantity of water into the tub; Rotating the laundry drum while increasing the drum speed, determining a level of water in the tub while increasing the drum speed, and determining a stop speed at which the determined level is greater than a predetermined level; Determining a saturation value of the laundry and determining a Drip saturation value are repeated until the determined saturation value of the laundry is greater than 50%. The feeding of water into the tub can also be carried out, for example, depending on the determined loading amount such that a repetition of these steps is not necessary.

When the drum speed reaches a predetermined final speed during the increase of the drum speed, i. is equal to the predetermined final speed, and the particular level is equal to or less than the predetermined level, it is preferred to add a further amount of water to the tub and rotate the laundry drum to increase the drum speed, determining the level of water in the tub during the elevation the drum speed and determining the Abbruchdrehzahl repeated. The steps are repeated until the termination speed can be determined, that is, until the determined level is greater than the predetermined level. The predetermined final speed is preferably the technically possible final speed of the washing machine.

Preferably, the amount of water supplied to the tub is determined. This can be realized, for example, by means of a volume flow meter.

In a preferred embodiment, the determined dripping saturation value is assigned to a selected washing program and stored. Alternatively or additionally, the determined loading amount is also preferably assigned to the selected washing program and stored. Thus, the washing behavior of the washing machine user can be documented. These stored data can continue to be used to determine process parameters. For example, it is possible to set the amount of water to be supplied to the suds container on the basis of the dripping saturation values assigned and stored to the selected washing program.

In another preferred embodiment, determining the dripping saturation value in a second method variant comprises calculating an average of stored drip saturation values associated with a selected wash program. This makes sense, for example, if the dripping saturation value determined in the first method variant described above is outside a predetermined value range and can therefore be erroneous.

The determination of the dripping saturation value can take place in the second method variant after starting the selected washing program. Alternatively, the dripping saturation value in the second method variant can also be determined at the end of the washing program, wherein the determined dripping saturation value is assigned to the selected washing program and stored and the determined assigned and stored drip saturation value is retrieved after the selected washing program has been started again.

The average may be formed by taking a sum of all or some of the drip saturation values associated with the selected washing program and dividing by the corresponding number of drip levels used for the calculation. Preferably, the average is calculated from at least ten, more preferably at least twenty last stored drip levels associated with the selected wash program. Alternatively, the stored drip saturation values are assigned a weight which is taken into account in the calculation. For example, dripping saturation values last stored and associated with the selected washing program are provided with a higher weighting than dripping saturation values stored previously and assigned to the selected washing program.

Preferably, in calculating an average of stored drip counts associated with the selected watch program, the stored drip counts that are within a predetermined range of values are taken into account and the stored drip counts associated with the selected watch program are excluded from the predetermined range of values. Preferably, each wash program is assigned its own value range.

In a preferred embodiment, the determined loading amount is assigned to the selected washing program and the assigned loading amount is stored. Preferably, when determining the dripping saturation value in the second process variant, the loading quantity assigned to the washing program and stored and determined is taken into account. For example, stored drip levels associated with the wash program and determined at the same or similar load level receive a higher weighting than stored drip levels associated with the wash program determined at a dissimilar load level. For example Loading amount value ranges are formed for each washing program or are stored in the washing machine, so that loading amounts that are within a loading amount value range, are classified as the same or similar, and load amounts that are outside of this load amount value range, are classified as dissimilar ,

In a preferred embodiment, determining the loading amount of laundry in the laundry drum comprises calculating an average of stored load amounts associated with the selected wash program when an error message occurs during or after determining the load of laundry in the laundry drum by means of a moment of inertia of the laundry or weighing the laundry in the laundry drum is generated. As a result, the load quantity can be determined as a function of the user-specific behavior and represent a continuous process variable that is self-learning. As a result, the dosage of the care agent can be optimally adjusted, even if the determined load should be incorrect.

In a preferred embodiment, the aforementioned amount of water to be supplied to the tub depends on the dripping saturation value determined by calculating the mean value from drip saturation values associated with stored wash programs associated with the selected wash program, and / or the determined loading amount.

The invention further relates to a washing machine with a tub for holding water, a laundry drum for receiving laundry, a drain device for removing the water from the tub and a control device which is adapted to control the method in one or more of the described embodiments.

The drain device is designed to remove water from the tub. Preferably, the drain device has a drain line, a drain pump and a further drain line. The drain line is connected to the tub, preferably with a lower part of the tub, based on the operational set-up of the washing machine, and the drain pump. The drain pump is further connected to the further drain line, which opens, for example, in a sewer. Position and directional information refer to the operational installation position of the washing machine.

Furthermore, the washing machine may have a circulating system, which is designed to remove washing liquid from a first region of the tub and to introduce it into a second region of the tub. The first region of the lye container is preferably a lower region of the lye container, and the second region of the lye container is preferably an upper region of the lye container, based on the set-up position of the automatic washing machine.

The washing machine may be a washing machine or a combined appliance such as a washer-dryer.

• 1 eine skizzierte, schematische und nicht-maßstabsgerechte Teil-Darstellung eines Waschautomaten.

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

• 1 a sketched, schematic and non-scale part representation of a washing machine.

1 shows a sketched, schematic and non-scale part representation of a washing machine. The washing machine 1 has a tub 2 for receiving water (not shown) and rotatable in the tub 2 mounted laundry drum 3 for receiving laundry 5 on. The tub 2 is coupled with a water inlet, a Einspülkasten 8th and a the Einspülkasten 8th and the tub 2 connecting hose 9 having. Furthermore, the tub is 2 with a drain device 6 coupled, over the water from the tub 2 can be removed. The drain device has a drain line 61 , a drain pump 62 and another drain line 63 on. The drain line 61 is with the tub 2 and the drain pump 62 connected. The drain pump 62 is further connected to the further drain line 63, which opens into a sewer (not shown).

Furthermore, in the lower part of the tub 2 , based on the operational installation position of the washing machine 1 , a pressure sensor 10 for sensing a pressure value or a filling level of water in the tub 2 arranged. In the lower part of the tub 2 , based on the operational installation position of the washing machine 1 , is optionally also a heating element 7 to heat up in the tub 2 located water. Optionally but not necessarily, the washing machine 1 furthermore a flooding device 4 on, which is designed to draw water from a lower area of the tub 2 in an upper area of the tub 2 to promote, based on the operational installation position of the washing machine 1 , Furthermore, the washing machine 1 a control device (not shown) that is arranged, methods for operating the washing machine 1 to control.

In operation, a washing program is started after selecting a washing program by a user. The washing program has a detection phase, a washing phase, a rinsing phase and a spin phase in the order given. Optionally, the wash program further includes a pre-dewatering phase after the acquisition phase but before the wash phase.

After program start, the acquisition phase is carried out. For this purpose, first a load of laundry 5 in the laundry drum 3 determined and possibly assigned to a loading level. Subsequently, a quantity of water in the tub 2 supplied, for example, depends on the determined load or associated loading level. After feeding the amount of water is the laundry drum 3 rotated while increasing the drum speed. Meanwhile, a level of water in the tub 2 determined continuously or at predetermined intervals. If the determined level is greater than a predetermined level, a Abbruchdrehzahl is determined in which the determined level is greater than a predetermined level. If the technically possible final speed of the washing machine 1 is achieved without the specific filling level is greater than the predetermined filling level, the laundry drum 3 brought to a standstill. Then the tub is again supplied with water, the laundry drum 3 is rotated again increasing the drum speed and becomes a level of water in the tub 2 determined again continuously or at predetermined intervals during the speed increase.

These steps are repeated, if necessary, until the determined filling level is greater than the predetermined filling level, so that the stopping speed can be determined. After determining the Abbruchdrehzahl the saturation value of the laundry 5 , which is a degree of saturation of the laundry 5 indicates with water, determined by means of the determined termination speed and the determined load. The saturation value is a function of the termination speed and the loading amount from a data memory (not shown) of the washing machine 1 read. Subsequently, the dripping saturation value, which is the water binding capacity of the laundry 5 defined by means of the amount of water supplied, the determined saturation value and the determined loading amount, wherein the drip-saturation value is equal to the amount of supplied water divided by (loading amount times saturation value). The dripping saturation value is preferably assigned to the selected washing program and stored. Furthermore, the determined loading amount is preferably assigned to the selected washing program and stored.

Alternatively, the dripping saturation value can also be determined from stored drip saturation values assigned to the washing program. This is especially the case when the dripping saturation value determined above is outside a predetermined value range and may be erroneous. In this alternative variant, the dripping saturation value is determined by calculating an average of stored drip saturation values associated with a selected wash program. The average may be formed by taking a sum of all or some of the stored drip counts associated with the selected wash program and dividing by the number of drip counts stored. For example, the average value is calculated from twenty last stored drip saturation values, wherein the stored drip saturation values may be assigned a weight which is taken into account during the summation. When calculating an average of the stored drip counts, the stored drip counts that are within a predetermined range of values for the selected wash program are taken into account and the stored drip counts that are outside the predetermined range of values for the selected wash program are disregarded. The dripping saturation value may also have been determined in a previous washing process, assigned to the washing program and stored; in this case, the determined and stored drip-saturation value is merely retrieved.

After the acquisition phase, the optional pre-dewatering phase can be carried out. In the pre-dewatering phase, a product is calculated from the determined loading quantity or the assigned loading stage and the determined dripping saturation value. The product will be in the washing machine 1 deposited VE product areas, which are each assigned to a VE product level and are delimited from each other by two VE limit values. Depending on the VE product level assigned to the calculated product, a speed plateau height is set at which the laundry drum 3 is rotated in a spin operation of the pre-dewatering phase. Furthermore, a speed-holding period during which the laundry drum 3 is rotated at the speed plateau height, from one in the washing machine 1 deposited for this spin cycle predetermined speed holding duration and the determined loading amount or the associated loading level and the determined drip saturation value set.

The washing phase, the rinsing phase and the spinning phase are carried out successively. The washing phase and the spinning phase each have a spinning process. The rinsing phase may include a plurality of rinsing operations, each coupled to a spin operation. During each spin operation, a speed increase and / or a decrease in the speed of the laundry drum, depending on the determined loading amount or its associated loading stage and the determined drip saturation value 3 set. In all spin processes, any speed plateau heights are set on the basis of the determined charge amount and the determined dripping saturation value and the associated speed hold duration is set on the basis of a predetermined speed of rotation for the respective spin cycle, the determined charge amount and the determined dripping saturation value.

In the rinsing phase, the acceleration of acceleration or the speed increase of each spin operation is set in particular on the basis of the determined loading level, the determined dripping saturation value, a foam value and a spin duration determined for the rinsing process.

The run-up acceleration or the speed increase for the spin phase is set in particular on the basis of the determined loading level and the determined dripping saturation value. A product is determined from the determined loading amount and the determined dripping saturation value. Product areas are each assigned to a product level and stored in the washing machine. The calculated product is compared with the deposited product areas and assigned the product level in which it is based. In the washing machine linear ramp-up accelerations or ramp accelerations for the spin phase are also deposited and assigned to a product level. On the basis of the determined product stage, a stored in the automatic washing machine linear acceleration acceleration for the execution of the spin operation of the spin phase is selected and started and carried out at the beginning of the spin phase.

LIST OF REFERENCE NUMBERS

1

Waschvollautomat

2

tub

3

washing drum

4

Umfluteinrichtung

5

Laundry

6

off device

61

drain line

62

drain pump

63

further drain line

7

heating element

8th

dispenser drawer

9

tube

10

pressure sensor

Claims (11)

Method for operating a washing machine (1) having a lye container (2) for receiving water, a laundry drum (3) for receiving laundry (5) and a discharge device (6) for removing the water from the lye container (2), comprising: - Determining a loading amount of laundry (5) in the laundry drum (3); Determining a dripping saturation value which defines a water-binding capacity of the laundry (5); and - Setting a speed increase, a speed plateau height at which the laundry drum (3) is maintained over a speed holding period, the speed holding duration and / or a speed reduction of the laundry drum (3) during a spin operation in dependence on the determined loading amount and the determined drip saturation value. Method according to Claim 1 , characterized in that the loading amount determined is assigned to a loading stage and the speed increase, Drehzahlplateauhöhe, speed holding duration and / or speed reduction is set in dependence on the load level assigned loading level and the determined drip saturation value. Method according to Claim 1 or 2 , characterized in that the speed-holding period is set in dependence on the load level assigned to the determined loading amount, the determined drip-saturation value and a predetermined speed-holding duration. Method according to one of the preceding claims, characterized in that the speed increase and / or the speed plateau height are set in a spin operation during a spin phase of a wash program depending on the load level assigned to the determined load and the determined drip saturation value. Method according to Claim 4 , characterized in that a product of the determined loading amount and the determined drip saturation value is determined and assigned to a product level and the speed increase and / or the speed plateau height are set as a function of the product level. Method according to one of Claims 1 to 3 , characterized in that the speed increase and / or the speed plateau height are set in a spin operation during a purging phase of a washing program as a function of the determined loading amount and the determined drip saturation value. Method according to Claim 6 Characterized in that the increase in speed and / or the speed plateau height as a function of the associated one of the charge amount detected loading stage, the Abtropfsättigungswerts determined and a foam value to be set. Method according to one of the preceding claims, characterized in that the determination of the Abtropfsättigungswertes comprises the following steps - supplying a quantity of water in the tub (2); Rotating the laundry drum (3) while increasing the drum speed, determining a level of water in the tub (2) during the increase of the drum speed, and determining a stop speed at which the determined level is greater than a predetermined level; - Determining a saturation value of the laundry (5), which indicates a degree of saturation of the laundry (5) with water, by means of the determined stopping speed and the determined loading amount; and determining the dripping saturation value by means of the amount of water supplied, the saturation value and the loading amount. Method according to one of the preceding Claims 1 to 7 characterized in that determining the drip saturation value comprises calculating an average of stored drip saturation values associated with a selected wash program. Method according to one of the preceding claims, characterized in that the determination of a loading amount of laundry (5) in the laundry drum (3) comprises determining a moment of inertia of the laundry (5) or weighing the laundry (5) in the laundry drum (3) , Washing machine (1) with a tub (2), a laundry drum (3) and a drain device (6) and a control device which is set up, a method according to one of Claims 1 to 10 to control.

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