EP3623514A1 - Device and method for operating a washing machine and washing machine - Google Patents

Device and method for operating a washing machine and washing machine Download PDF

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Publication number
EP3623514A1
EP3623514A1 EP19194107.9A EP19194107A EP3623514A1 EP 3623514 A1 EP3623514 A1 EP 3623514A1 EP 19194107 A EP19194107 A EP 19194107A EP 3623514 A1 EP3623514 A1 EP 3623514A1
Authority
EP
European Patent Office
Prior art keywords
laundry
drum
amount
water
rinsing
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.)
Granted
Application number
EP19194107.9A
Other languages
German (de)
French (fr)
Other versions
EP3623514B1 (en
Inventor
Rainer Bicker
Markus Drücker
Magnus Kortenjann
Ralf Templin
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 EP3623514A1 publication Critical patent/EP3623514A1/en
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Publication of EP3623514B1 publication Critical patent/EP3623514B1/en
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Classifications

    • 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
    • D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of 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
    • 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
    • D06F2105/02—Water 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2202/10—
    • D06F2202/12—
    • D06F2204/06—
    • D06F2204/086—

Definitions

  • the invention relates to a method and a device for operating a washing machine and a washing machine.
  • a portion of a washing liquor can be pumped out and the laundry can be spun.
  • a remaining wash liquor bound in the laundry can then be diluted by adding plenty of rinse water.
  • a lot of free liquor can be used as rinsing water and the laundry can be moved through the free liquor in order to exchange the bound liquor with the free liquor. The laundry can then be spun again.
  • the object of the invention is to provide an improved method for operating a washing machine, an improved device for operating a washing machine and an improved washing machine.
  • this object is achieved by a method for operating a washing machine, a device for operating a washing machine and a washing machine with the steps or features of the main claims.
  • laundry in a washing machine can also be rinsed out only with a bound liquor.
  • the liquor remaining in the laundry can be exchanged with a specially determined amount of added rinse water, and rinsing with a free liquor can be dispensed with. It is only possible to rinse with a bound liquor, as a result of which the laundry is not pulled through the free liquor and advantageously less energy is required for the washing movement.
  • the exchange between wash liquor in the bound liquor and the water added in the bound liquor can advantageously take place faster than the exchange between the bound liquor and free liquor, as a result of which the rinsing can be implemented in a time-saving manner. In this way, the energy and water consumption can advantageously be reduced, and the washing performance can be maintained.
  • the approach described here can also be used in connection with a commercial or professional device, for example a medical device, such as a cleaning or disinfection device, a small sterilizer, a large-scale disinfector or a container washing system.
  • a medical device such as a cleaning or disinfection device, a small sterilizer, a large-scale disinfector or a container washing system.
  • a method for operating a washing machine is presented.
  • the washing machine has a drum for holding laundry.
  • the method has a step of determining, a step of performing and a step of reducing.
  • an amount of rinsing water is determined for a washing process of the washing machine.
  • the amount of rinse water is determined using a load of laundry in the drum, a remaining liquor in the laundry at the start of the rinsing process and a drainage behavior of the laundry.
  • the rinsing process is carried out using the determined amount of rinsing water.
  • the amount of rinse water is completely bound by the laundry.
  • the drum is rotated during the rinsing process.
  • the liquor bound in the laundry from the remaining liquor and the amount of rinse water is reduced.
  • a further rotary movement of the drum is carried out to reduce it.
  • the washing machine can be, for example, an automatic washing machine or a combined washer-dryer.
  • the drum can be rotatably arranged in a tub.
  • the rinsing process can be understood to mean, for example, a predefined washing program for the washing machine.
  • the rinsing process can also include only a partial sequence of the washing program.
  • the rinsing process can be carried out, for example, in order to remove residues of detergent or dirt from the laundry after a main wash cycle.
  • the amount of rinsing water can be determined, for example, so that the laundry is partially or completely saturated during rinsing.
  • the amount of rinse water can be completely absorbed by the laundry or bound by the laundry.
  • the liquor can be understood as the amount of liquid that is used in the washing machine during a washing process.
  • the fleet can consist, for example, of tap water with or without detergent.
  • the remaining liquor can be understood to mean the liquor remaining in the laundry from a washing process preceding the rinsing process.
  • the amount of loading can be the mass of laundry that is accommodated in the drum.
  • the loading quantity can be recorded, for example, by means of a weighing method or a mass inertia method.
  • the drainage behavior of the laundry can depend, for example, on the type of textile.
  • the rotary movement and the further rotary movement of the drum can be, for example, rotating, reversing and additionally or alternatively spinning the laundry, which takes place at a different speed.
  • the speed can be, for example, in a range from 50 to 1200 revolutions per minute.
  • the further rotary movement can be carried out, for example, at a higher speed than the rotary movement.
  • the step of determining, the step of performing and the step of reducing can be repeated cyclically in order to replace the remaining liquor in the laundry with rinsing water. This is advantageous in order to efficiently rinse out residues of detergent or dirt that may be in the remaining liquor.
  • the amount of rinse water can be increased compared to a previous execution of the determining step in order to rinse the laundry.
  • the residual liquor can advantageously be rinsed out in this way. Since rinsing is only carried out with a bound liquor, rinsing is particularly resource-saving.
  • the method can also include a step of determining.
  • the rotational speed for executing the rotational movement and additionally or alternatively for executing the further rotational movement of the drum can be determined using the load quantity and a water feed quantity.
  • the amount of water supplied can relate to a washing process of the washing machine preceding the rinsing process.
  • the rotational speed can also be determined for other rotary movements of the drum, for example a rotational speed for a rotary movement of the drum for the washing process preceding the rinsing process.
  • the rotary movement of the drum can thus advantageously be determined on the basis of the loading of the drum, which is energy-saving.
  • the method can also include a step of recognizing the loading quantity.
  • the load amount can be recognized using a mass moment of inertia of the laundry. Additionally or alternatively, the load quantity can be recognized on the basis of a suction behavior of the laundry. In addition, the load quantity can also be recognized additionally or alternatively by a detected mass of the laundry, for example by means of a weighing method. The load quantity can be recognized, for example, in order to determine a water feed quantity for the washing process preceding the rinsing process.
  • the remaining liquor can be determined using a washing load quantity from a washing process preceding the washing process and the loading quantity at the beginning of the washing process.
  • the washing load amount and the load amount can be determined, for example, in the step of recognizing.
  • the remaining liquor can be determined, for example, as the difference between the wash load and the load.
  • the amount of flushing water can thereby be determined particularly precisely, as a result of which the flushing process can be carried out in a particularly water and energy-saving manner.
  • the method can also include a step of detecting the drainage behavior of the laundry.
  • the drainage behavior of the laundry can be recorded using a moment of inertia of the laundry and additionally or alternatively using a torque curve of the drum. Detecting the drainage behavior advantageously also enables a particularly precise determination of the amount of rinsing water.
  • the approach presented here also creates a device which is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices.
  • This embodiment variant of the invention in the form of a device can also be used to quickly and efficiently achieve the object on which the invention is based.
  • the device can be designed to read input signals and to determine and provide output signals using the input signals.
  • An input signal can represent, for example, a sensor signal that can be read in via an input interface of the device.
  • An output signal can represent a control signal or a data signal that can be provided at an output interface of the device.
  • the device can be designed to determine the output signals using a processing rule implemented in hardware or software.
  • the device can comprise a logic circuit, an integrated circuit or a software module and can be implemented, for example, as a discrete component or can be comprised by a discrete component.
  • the washing machine has a drum for holding laundry and an embodiment of the above-mentioned device.
  • the washing machine can be designed, for example, as an automatic washing machine or as a combined washer-dryer.
  • a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory, is also advantageous. If the program product or program is executed on a computer or a device, the program product or program can be used to carry out, implement and / or control the steps of the method according to one of the embodiments described above.
  • FIG. 1 shows a schematic illustration of a washing machine 100 with a device 105 for operating the washing machine 100 according to an exemplary embodiment.
  • the washing machine 100 has a drum 110 for holding laundry 115.
  • the device 105 is designed to determine an amount of rinsing water for a washing process of the washing machine 100. The amount of rinse water is determined using a load of laundry 115 in the drum 110, a remaining liquor in the laundry 115 at the start of the rinsing process and a drainage behavior of the laundry 115.
  • the device 105 is also designed to carry out the washing process using the determined amount of washing water. The amount of rinse water is completely bound by the laundry 115. Rotation of the drum 110 is carried out during the rinsing process.
  • the device 105 is designed to reduce the liquor of residual liquor and amount of rinsing water bound in the laundry 115. Another rotation of drum 110 is performed to reduce.
  • Rinsing the laundry 115 by means of the device 105 shown here only with a bound liquor is advantageously energy-saving, because an exchange between the bound liquor and free liquor takes longer than washing with a quantity of rinsing water as a bound liquor, and lifting the laundry 115 from the free liquor also requires more energy.
  • the device 105 is also designed to repeat the determination of the amount of rinsing water, performing the rinsing process and reducing the liquor bound in the laundry 115 in order to replace the remaining liquor in the laundry 115 with rinsing water.
  • the device 105 is also designed to repeat the washing water amount each time the washing 115 is rinsed again to increase the amount of rinsing water compared to a previously determined amount of rinsing water in order to rinse the laundry 115.
  • the device 105 is designed according to one exemplary embodiment to determine the rotational movement of the drum 110 and / or the further rotational movement of the drum 110.
  • the device 105 is designed to recognize the loading quantity of the drum 110 using a mass moment of inertia of the laundry 115 and / or a suction behavior of the laundry 115 and additionally or alternatively a detected mass of the laundry 115.
  • the device 105 is also designed to determine the remaining liquor in the laundry 115.
  • the remaining liquor is determined using a washing load quantity from a washing process preceding the rinsing process and the loading quantity at the beginning of the rinsing process.
  • the device 105 is also designed to determine the dewatering behavior of the laundry 115 using a mass moment of inertia of the laundry 115 and / or a torque curve of the drum 110.
  • a washing process and the subsequent rinsing process in the washing machine 100 using the device 105 are described below by way of example:
  • the load quantity of the drum 110 is determined according to an exemplary embodiment by means of an inertia method or a suction behavior of the load or a weighing function of the washing machine 100, and the water feed quantity for the washing process is determined.
  • These values are used in the control of the rinsing process by means of the device 105 for determining the parameters of the rinsing process, such as the amount of rinsing water or the speed of the drum 110, on the basis of a model.
  • a required speed profile of the drum 110 for the required residual moisture reduction of the laundry 115 for the spin cycle after the main wash is then determined on the basis of the determined loading amount and the known water feed amount in order to reduce the bound liquor in the laundry 115.
  • the dewatering behavior of the loading of the drum 110 is observed in order to optimize the previously determined speed profile of the drum 110 again, and the data obtained in this way for the further design of the washing process, i.e. for determining the amount of washing water and the required speed for the rotary movement to carry out the rinsing process and the further rotary movement to reduce the liquor in the laundry 115.
  • the dewatering behavior of the laundry 115 is determined according to one exemplary embodiment using a mass moment of inertia of the laundry 115 and / or a torque curve of the drum 110.
  • the mass moment of inertia of the loading that is to say the laundry 115 and the liquor bound in the laundry 115, can be determined using a mass inertia method.
  • a difference between the load determined at the start of the washing process and in the current measurement corresponds to the amount of water in the load.
  • the torque requirement or the power requirement is observed with the progressive dewatering of the laundry 115: the torque or power requirement falls with the progressive dewatering on a speed plateau. If the change in the torque or power curve falls below a limit, the speed plateau is ended because the optimal drainage has been achieved on this plateau.
  • the load quantity of the drum 110 is determined again using an inertia method. This determines the amount of water remaining in the load. The aim is to determine the optimal water intake for the following spin cycle from the determined values. Then the amount of rinsing water is determined for the following rinse cycle.
  • the amount of rinsing water for the subsequent rinsing step is determined based on the load, the remaining water and the drainage behavior. Only so much water is used that no free liquor is formed.
  • the total amount of rinse water that is added is bound in the laundry 115. Then the determined amount of rinse water is added.
  • the amount of water in the rinsing water can be added via the door sight glass rinsing or by washing the washing machine 100. If the water is introduced into the laundry 115 via the flooding, the flooding circuit must first be rinsed with fresh water. For this purpose, water is introduced into the tub of the washing machine 100, and the introduced water is pumped out again.
  • a washing movement that is to say a rotary movement of the drum 110, is carried out for rinsing.
  • the liquor bound in the laundry 115 is then reduced.
  • the amount of water in the rinsing water is slightly increased in each rinsing step of the rinsing process, that is to say with each repetition, in order to increase the concentration difference via the exchange process.
  • the laundry 115 is finally spun.
  • the power requirement for the washing movement of the drum 110 is reduced by dispensing with the free liquor and the exchange between fresh water and washing liquor takes place in the tied fleet significantly faster than the exchange between free fleet and tied fleet.
  • the power requirement and the mechanical load on the washing machine 100 are reduced.
  • the time required for a rinse cycle is reduced so that additional cycles can be carried out to improve the rinsing effect.
  • the water is not driven so deep into the laundry 115, so that better final residual moisture levels can be achieved in the final spin cycle.
  • the control of the dewatering of the laundry 115 on the basis of the load, such as the amount and type of load, and the control of the speed curve of the drum 110 are carried out on the basis of the torque or power curve.
  • the drainage of the laundry 115 is monitored using an inertia method and by determining the remaining amount of residual water.
  • the amount of rinse water is determined for the following rinse cycle in such a way that the laundry 115 is rinsed only with a bound liquor.
  • FIG. 12 shows a flowchart of a method 200 for operating a washing machine according to an exemplary embodiment.
  • the washing machine has a drum for holding laundry.
  • the method 200 has a step 205 of determining, a step 210 of performing and a step 215 of reducing.
  • step 205 of the determination an amount of rinsing water for a rinsing process of the washing machine is determined.
  • the amount of rinse water is determined using a load of laundry in the drum, a remaining liquor in the laundry at the start of the rinsing process and a drainage behavior of the laundry.
  • the rinsing process is carried out using the determined amount of rinsing water.
  • the amount of rinse water is completely bound by the laundry.
  • the drum is rotated during the rinsing process.
  • step 215 of the reduction the liquor bound in the laundry from the remaining liquor and the amount of rinse water is reduced. A further rotary movement of the drum is carried out to reduce it.
  • the steps 205 of determining, 210 of performing 215 of reducing are repeated several times cyclically in accordance with an exemplary embodiment.
  • the method 200 also includes a step 220 of determining.
  • a rotational speed for executing the rotational movement and additionally or alternatively the further rotational movement of the drum is determined using the load quantity and a water inlet quantity.
  • the step 220 of determining is carried out before the step 210 of performing and / or before step 215 of reducing.
  • the method also includes a step 225 of recognizing.
  • the load quantity is recognized using a mass moment of inertia of the laundry and / or a suction behavior of the laundry and / or a detected mass of the laundry.
  • the step 225 of the recognition is optionally carried out before the step 205 of the determination.
  • the method 200 comprises a step 230 of capturing.
  • step 230 of the detection the drainage behavior of the laundry is detected using a mass moment of inertia of the laundry and / or a torque curve of the drum.
  • step 230 of the detection is carried out before step 205 of the detection.
  • an embodiment includes a "and / or" link between a first feature and a second feature, it should be read in such a way that the embodiment according to one embodiment includes both the first feature and the second feature and according to a further embodiment either only that has the first feature or only the second feature.

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

Abstract

Die Erfindung betrifft ein Verfahren zum Betreiben einer Waschmaschine (100) mit einer Trommel (110). Das Verfahren weist einen Schritt des Ermittelns, einen Schritt des Durchführens und einen Schritt des Reduzierens auf. Im Schritt des Ermittelns wird eine Spülwassermenge für einen Spülvorgang der Waschmaschine (100) ermittelt. Die Spülwassermenge wird unter Verwendung einer Beladungsmenge an Wäsche (115) in der Trommel (110), einer Restflotte in der Wäsche (115) zu Beginn des Spülvorgangs und eines Entwässerungsverhaltens der Wäsche (115) ermittelt. Im Schritt des Durchführens wird der Spülvorgang unter Verwendung der ermittelten Spülwassermenge durchgeführt. Die Spülwassermenge ist dabei vollständig durch die Wäsche (115) gebunden. Während des Spülvorgangs wird eine Drehbewegung der Trommel (110) ausgeführt. Im Schritt des Reduzierens wird die in der Wäsche (115) gebundene Flotte aus Restflotte und Spülwassermenge reduziert.The invention relates to a method for operating a washing machine (100) with a drum (110). The method has a step of determining, a step of performing and a step of reducing. In the determining step, an amount of rinsing water is determined for a washing process of the washing machine (100). The amount of rinsing water is determined using a load of laundry (115) in the drum (110), a remaining liquor in the laundry (115) at the start of the washing process and a drainage behavior of the laundry (115). In the step of performing, the rinsing process is carried out using the determined amount of rinsing water. The amount of rinse water is completely bound by the laundry (115). The drum (110) is rotated during the rinsing process. In the reducing step, the liquor from the remaining liquor and the amount of rinsing water bound in the laundry (115) is reduced.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Betreiben einer Waschmaschine und eine Waschmaschine.The invention relates to a method and a device for operating a washing machine and a washing machine.

Um nach einem Hauptwaschgang von Wäsche in einer Waschmaschine Rückstände von Waschmittel oder Schmutz aus der Wäsche zu entfernen, kann ein Anteil einer Waschflotte abgepumpt werden und kann die Wäsche geschleudert werden. Anschließend kann eine verbliebene, in der Wäsche gebundene Waschflotte durch die Zugabe von viel Spülwasser verdünnt werden. Dabei kann viel freie Flotte als Spülwasser eingesetzt werden und die Wäsche kann durch die freie Flotte bewegt werden, um die gebundene Flotte mit der freien Flotte auszutauschen. Danach kann die Wäsche erneut geschleudert werden.In order to remove residues of detergent or dirt from the laundry after a main wash of laundry in a washing machine, a portion of a washing liquor can be pumped out and the laundry can be spun. A remaining wash liquor bound in the laundry can then be diluted by adding plenty of rinse water. A lot of free liquor can be used as rinsing water and the laundry can be moved through the free liquor in order to exchange the bound liquor with the free liquor. The laundry can then be spun again.

Der Erfindung stellt sich die Aufgabe, ein verbessertes Verfahren zum Betreiben einer Waschmaschine, eine verbesserte Vorrichtung zum Betreiben einer Waschmaschine und eine verbesserte Waschmaschine zu schaffen.The object of the invention is to provide an improved method for operating a washing machine, an improved device for operating a washing machine and an improved washing machine.

Erfindungsgemäß wird diese Aufgabe durch ein Verfahren zum Betreiben einer Waschmaschine, eine Vorrichtung zum Betreiben einer Waschmaschine und eine Waschmaschine mit den Schritten bzw. Merkmalen der Hauptansprüche gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this object is achieved by a method for operating a washing machine, a device for operating a washing machine and a washing machine with the steps or features of the main claims. Advantageous refinements and developments of the invention result from the following subclaims.

Die mit der Erfindung erreichbaren Vorteile bestehen darin, dass Wäsche in einer Waschmaschine auch lediglich mit gebundener Flotte ausgespült werden kann. Dazu kann ein Austausch von in der Wäsche verbleibender Flotte mit einer eigens ermittelten Menge von zugegebenen Spülwasser erfolgen, wobei auf das Spülen mit freier Flotte verzichtet werden kann. Hierbei kann lediglich mit gebundener Flotte gespült werden, wodurch die Wäsche nicht durch die freie Flotte gezogen wird und vorteilhafterweise weniger Energie für die Waschbewegung benötigt wird. Zudem kann der Austausch zwischen Waschlauge in der gebundenen Flotte und dem zugegebenen Wasser in der gebundenen Flotte vorteilhafterweise schneller erfolgen als der Austausch zwischen gebundener Flotte und freier Flotte, wodurch das Spülen zeitsparend umgesetzt werden kann. Vorteilhafterweise kann auf diese Weise der Energie- und Wasserverbrauch gesenkt werden, wobei die Waschleistung erhalten werden kann.The advantages that can be achieved with the invention are that laundry in a washing machine can also be rinsed out only with a bound liquor. For this purpose, the liquor remaining in the laundry can be exchanged with a specially determined amount of added rinse water, and rinsing with a free liquor can be dispensed with. It is only possible to rinse with a bound liquor, as a result of which the laundry is not pulled through the free liquor and advantageously less energy is required for the washing movement. In addition, the exchange between wash liquor in the bound liquor and the water added in the bound liquor can advantageously take place faster than the exchange between the bound liquor and free liquor, as a result of which the rinsing can be implemented in a time-saving manner. In this way, the energy and water consumption can advantageously be reduced, and the washing performance can be maintained.

Auch wenn der beschriebene Ansatz anhand eines Haushaltgeräts beschrieben wird, kann der hier beschriebene Ansatz entsprechend im Zusammenhang mit einem gewerblichen oder professionellen Gerät, beispielsweise einem medizinischen Gerät, wie einem Reinigungs- oder Desinfektionsgerät, einem Kleinsterilisator, einem Großraumdesinfektor oder einer Container-Waschanlage eingesetzt werden.Even if the approach described is described with the aid of a household appliance, the approach described here can also be used in connection with a commercial or professional device, for example a medical device, such as a cleaning or disinfection device, a small sterilizer, a large-scale disinfector or a container washing system.

Es wird ein Verfahren zum Betreiben einer Waschmaschine vorgestellt. Die Waschmaschine weist eine Trommel zum Aufnehmen von Wäsche auf. Das Verfahren weist einen Schritt des Ermittelns, einen Schritt des Durchführens und einen Schritt des Reduzierens auf. Im Schritt des Ermittelns wird eine Spülwassermenge für einen Spülvorgang der Waschmaschine ermittelt. Die Spülwassermenge wird unter Verwendung einer Beladungsmenge an Wäsche in der Trommel, einer Restflotte in der Wäsche zu Beginn des Spülvorgangs und eines Entwässerungsverhaltens der Wäsche ermittelt. Im Schritt des Durchführens wird der Spülvorgang unter Verwendung der ermittelten Spülwassermenge durchgeführt. Dabei ist die Spülwassermenge vollständig durch die Wäsche gebunden. Während des Spülvorgangs wird eine Drehbewegung der Trommel ausgeführt. Im Schritt des Reduzierens wird die in der Wäsche gebundene Flotte aus Restflotte und Spülwassermenge reduziert. Zum Reduzieren wird eine weitere Drehbewegung der Trommel ausgeführt.A method for operating a washing machine is presented. The washing machine has a drum for holding laundry. The method has a step of determining, a step of performing and a step of reducing. In the determining step, an amount of rinsing water is determined for a washing process of the washing machine. The amount of rinse water is determined using a load of laundry in the drum, a remaining liquor in the laundry at the start of the rinsing process and a drainage behavior of the laundry. In the step of performing, the rinsing process is carried out using the determined amount of rinsing water. The amount of rinse water is completely bound by the laundry. The drum is rotated during the rinsing process. In the step of reducing, the liquor bound in the laundry from the remaining liquor and the amount of rinse water is reduced. A further rotary movement of the drum is carried out to reduce it.

Bei der Waschmaschine kann es sich beispielsweise um einen Waschautomaten oder um ein kombiniertes Waschtrockengerät handeln. Die Trommel kann drehbar in einem Laugenbehälter angeordnet sein. Unter dem Spülvorgang kann beispielsweise ein vordefiniertes Waschprogramm der Waschmaschine verstanden werden. Der Spülvorgang kann auch nur einen Teilablauf des Waschprogramms umfassen. Der Spülvorgang kann beispielsweise ausgeführt werden, um nach einem Hauptwaschgang Rückstände von Waschmittel oder Schmutz aus der Wäsche zu entfernen. Die Spülwassermenge kann beispielsweise so ermittelt werden, dass die Wäsche beim Spülen teilweise oder vollständig gesättigt ist. Die Spülwassermenge kann dabei vollständig von der Wäsche aufgenommen werden bzw. durch die Wäsche gebunden sein. Unter der Flotte kann die Menge an Flüssigkeit verstanden werden, die während eines Waschvorgangs in der Waschmaschine verwendet wird. Die Flotte kann beispielsweise aus Leitungswasser mit oder ohne Waschmittel bestehen. Unter der Restflotte kann die aus einem dem Spülvorgang vorhergehenden Waschvorgang in der Wäsche verbliebene Flotte verstanden werden. Bei der Beladungsmenge kann es sich um die Masse an Wäsche, die in der Trommel aufgenommen ist, handeln. Die Beladungsmenge kann beispielsweise mittels eines Wiegeverfahrens oder eines Massenträgheitsverfahrens erfasst werden. Das Entwässerungsverhalten der Wäsche kann beispielsweise von der Textilart abhängig sein. Die Drehbewegung und die weitere Drehbewegung der Trommel können beispielsweise ein Drehen, ein Reversieren und zusätzlich oder alternativ ein Schleudern der Wäsche sein, dass mit einer unterschiedlichen Drehzahl erfolgt. Die Drehzahl kann beispielsweise in einem Bereich von 50 bis 1200 Umdrehungen pro Minute liegen. Zum Reduzieren der in der Wäsche gebundenen Flotte kann die weitere Drehbewegung beispielsweise mit einer höheren Drehzahl ausgeführt werden als die Drehbewegung.The washing machine can be, for example, an automatic washing machine or a combined washer-dryer. The drum can be rotatably arranged in a tub. The rinsing process can be understood to mean, for example, a predefined washing program for the washing machine. The rinsing process can also include only a partial sequence of the washing program. The rinsing process can be carried out, for example, in order to remove residues of detergent or dirt from the laundry after a main wash cycle. The amount of rinsing water can be determined, for example, so that the laundry is partially or completely saturated during rinsing. The amount of rinse water can be completely absorbed by the laundry or bound by the laundry. The liquor can be understood as the amount of liquid that is used in the washing machine during a washing process. The fleet can consist, for example, of tap water with or without detergent. The remaining liquor can be understood to mean the liquor remaining in the laundry from a washing process preceding the rinsing process. The amount of loading can be the mass of laundry that is accommodated in the drum. The loading quantity can be recorded, for example, by means of a weighing method or a mass inertia method. The drainage behavior of the laundry can depend, for example, on the type of textile. The rotary movement and the further rotary movement of the drum can be, for example, rotating, reversing and additionally or alternatively spinning the laundry, which takes place at a different speed. The speed can be, for example, in a range from 50 to 1200 revolutions per minute. To reduce the in the Fleet bound to laundry, the further rotary movement can be carried out, for example, at a higher speed than the rotary movement.

Gemäß einer Ausführungsform können der Schritt des Ermittelns, der Schritt des Durchführens und der Schritt des Reduzierens zyklisch wiederholt werden, um die Restflotte in der Wäsche durch Spülwasser auszutauschen. Dies ist vorteilhaft, um Rückstände von Waschmittel oder Schmutz, die sich in der Restflotte befinden können, effizient auszuspülen.According to one embodiment, the step of determining, the step of performing and the step of reducing can be repeated cyclically in order to replace the remaining liquor in the laundry with rinsing water. This is advantageous in order to efficiently rinse out residues of detergent or dirt that may be in the remaining liquor.

Zudem kann gemäß einer Ausführungsform bei jedem Wiederholen des Schritts des Ermittelns die Spülwassermenge gegenüber einem vorhergehenden Ausführen des Schritts des Ermittelns erhöht werden, um die Wäsche zu spülen. Vorteilhafterweise kann die Restflotte auf diese Weise ausgespült werden. Da nur mit gebundener Flotte gespült wird, ist das Spülen besonders ressourcenschonend.In addition, according to one embodiment, each time the determining step is repeated, the amount of rinse water can be increased compared to a previous execution of the determining step in order to rinse the laundry. The residual liquor can advantageously be rinsed out in this way. Since rinsing is only carried out with a bound liquor, rinsing is particularly resource-saving.

Das Verfahren kann gemäß einer Ausführungsform auch einen Schritt des Bestimmens umfassen. Im Schritt des Bestimmens kann die Drehzahl zum Ausführen der Drehbewegung und zusätzlich oder alternativ zum Ausführen der weiteren Drehbewegung der Trommel unter Verwendung der Beladungsmenge und einer Wasserzulaufmenge bestimmt werden. Die Wasserzulaufmenge kann einen dem Spülvorgang vorangehenden Waschvorgang der Waschmaschine betreffen. Im Schritt des Bestimmens kann auch die Drehzahl für andere Drehbewegungen der Trommel bestimm werden, beispielsweise eine Drehzahl für eine Drehbewegung der Trommel für den dem Spülvorgang vorausgehenden Waschvorgang. Vorteilhafterweise kann die Drehbewegung der Trommel so anhand der Beladung der Trommel bestimmt werden, was energiesparend ist.In one embodiment, the method can also include a step of determining. In the determining step, the rotational speed for executing the rotational movement and additionally or alternatively for executing the further rotational movement of the drum can be determined using the load quantity and a water feed quantity. The amount of water supplied can relate to a washing process of the washing machine preceding the rinsing process. In the determining step, the rotational speed can also be determined for other rotary movements of the drum, for example a rotational speed for a rotary movement of the drum for the washing process preceding the rinsing process. The rotary movement of the drum can thus advantageously be determined on the basis of the loading of the drum, which is energy-saving.

Auch kann das Verfahren gemäß einer Ausführungsform einen Schritt des Erkennens der Beladungsmenge umfassen. Die Beladungsmenge kann unter Verwendung eines Massenträgheitsmoments der Wäsche erkannt werden. Zusätzlich oder alternativ kann die Beladungsmenge anhand eines Saugverhaltens der Wäsche erkannt werden. Zudem kann die Beladungsmenge auch zusätzlich oder alternativ durch eine erfasste Masse der Wäsche erkannt werden, beispielsweise mittels eines Wiegeverfahrens. Die Beladungsmenge kann beispielsweise erkannt werden, um eine Wasserzulaufmenge für den dem Spülvorgang vorangehenden Waschvorgang zu bestimmen.According to one embodiment, the method can also include a step of recognizing the loading quantity. The load amount can be recognized using a mass moment of inertia of the laundry. Additionally or alternatively, the load quantity can be recognized on the basis of a suction behavior of the laundry. In addition, the load quantity can also be recognized additionally or alternatively by a detected mass of the laundry, for example by means of a weighing method. The load quantity can be recognized, for example, in order to determine a water feed quantity for the washing process preceding the rinsing process.

Im Schritt des Ermittelns kann gemäß einer Ausführungsform unter Verwendung einer Waschbeladungsmenge von einem dem Spülvorgang vorhergehenden Waschvorgang und der Beladungsmenge zu Beginn des Spülvorgangs die Restflotte ermittelt werden. Die Waschbeladungsmenge und die Beladungsmenge können beispielsweise im Schritt des Erkennens ermittelt werden. Die Restflotte kann beispielsweise als Differenz zwischen der Waschbeladungsmenge und der Beladungsmenge ermittelt werden. Vorteilhafterweise kann die Spülwassermenge dadurch besonders exakt ermittelt werden, wodurch der Spülvorgang besonders wasser- und energiesparend durchgeführt werden kann.In the determining step, according to one embodiment, the remaining liquor can be determined using a washing load quantity from a washing process preceding the washing process and the loading quantity at the beginning of the washing process. The washing load amount and the load amount can be determined, for example, in the step of recognizing. The remaining liquor can be determined, for example, as the difference between the wash load and the load. Can advantageously the amount of flushing water can thereby be determined particularly precisely, as a result of which the flushing process can be carried out in a particularly water and energy-saving manner.

Außerdem kann das Verfahren gemäß einer Ausführungsform auch einen Schritt des Erfassens des Entwässerungsverhaltens der Wäsche umfassen. Das Entwässerungsverhalten der Wäsche kann unter Verwendung eines Massenträgheitsmoments der Wäsche und zusätzlich oder alternativ unter Verwendung eines Drehmomentverlaufs der Trommel erfasst werden. Auch ein Erfassen des Entwässerungsverhaltens ermöglicht vorteilhafterweise eine besonders exakte Ermittlung der Spülwassermenge.In addition, according to one embodiment, the method can also include a step of detecting the drainage behavior of the laundry. The drainage behavior of the laundry can be recorded using a moment of inertia of the laundry and additionally or alternatively using a torque curve of the drum. Detecting the drainage behavior advantageously also enables a particularly precise determination of the amount of rinsing water.

Der hier vorgestellte Ansatz schafft ferner eine Vorrichtung, die ausgebildet ist, um die Schritte einer Variante eines hier vorgestellten Verfahrens in entsprechenden Einrichtungen durchzuführen, anzusteuern bzw. umzusetzen. Auch durch diese Ausführungsvariante der Erfindung in Form einer Vorrichtung kann die der Erfindung zugrunde liegende Aufgabe schnell und effizient gelöst werden.The approach presented here also creates a device which is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices. This embodiment variant of the invention in the form of a device can also be used to quickly and efficiently achieve the object on which the invention is based.

Die Vorrichtung kann ausgebildet sein, um Eingangssignale einzulesen und unter Verwendung der Eingangssignale Ausgangssignale zu bestimmen und bereitzustellen. Ein Eingangssignal kann beispielsweise ein über eine Eingangsschnittstelle der Vorrichtung einlesbares Sensorsignal darstellen. Ein Ausgangssignal kann ein Steuersignal oder ein Datensignal darstellen, das an einer Ausgangsschnittstelle der Vorrichtung bereitgestellt werden kann. Die Vorrichtung kann ausgebildet sein, um die Ausgangssignale unter Verwendung einer in Hardware oder Software umgesetzten Verarbeitungsvorschrift zu bestimmen. Beispielsweise kann die Vorrichtung dazu eine Logikschaltung, einen integrierten Schaltkreis oder ein Softwaremodul umfassen und beispielsweise als ein diskretes Bauelement realisiert sein oder von einem diskreten Bauelement umfasst sein.The device can be designed to read input signals and to determine and provide output signals using the input signals. An input signal can represent, for example, a sensor signal that can be read in via an input interface of the device. An output signal can represent a control signal or a data signal that can be provided at an output interface of the device. The device can be designed to determine the output signals using a processing rule implemented in hardware or software. For example, for this purpose the device can comprise a logic circuit, an integrated circuit or a software module and can be implemented, for example, as a discrete component or can be comprised by a discrete component.

Mit diesem Ansatz wird zudem eine Waschmaschine vorgestellt. Die Waschmaschine weist eine Trommel zum Aufnehmen von Wäsche und eine Ausführungsform der vorstehend genannten Vorrichtung auf. Die Waschmaschine kann beispielsweise als Waschautomat oder als kombiniertes Waschtrockengerät ausgeführt sein.This approach also introduces a washing machine. The washing machine has a drum for holding laundry and an embodiment of the above-mentioned device. The washing machine can be designed, for example, as an automatic washing machine or as a combined washer-dryer.

Von Vorteil ist auch ein Computer-Programmprodukt oder Computerprogramm mit Programmcode, der auf einem maschinenlesbaren Träger oder Speichermedium wie einem Halbleiterspeicher, einem Festplattenspeicher oder einem optischen Speicher gespeichert sein kann. Wird das Programmprodukt oder Programm auf einem Computer oder einer Vorrichtung ausgeführt, so kann das Programmprodukt oder Programm zur Durchführung, Umsetzung und/oder Ansteuerung der Schritte des Verfahrens nach einer der vorstehend beschriebenen Ausführungsformen verwendet werden.A computer program product or computer program with program code, which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory, is also advantageous. If the program product or program is executed on a computer or a device, the program product or program can be used to carry out, implement and / or control the steps of the method according to one of the embodiments described above.

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

Figur 1
eine schematische Darstellung einer Waschmaschine mit einer Vorrichtung zum Betreiben der Waschmaschine gemäß einem Ausführungsbeispiel; und
Figur 2
ein Ablaufdiagramm eines Verfahrens zum Betreiben einer Waschmaschine gemäß einem Ausführungsbeispiel.
An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows
Figure 1
a schematic representation of a washing machine with a device for operating the washing machine according to an embodiment; and
Figure 2
a flowchart of a method for operating a washing machine according to an embodiment.

In der nachfolgenden Beschreibung günstiger Ausführungsbeispiele des vorliegenden Ansatzes werden für die in den verschiedenen Figuren dargestellten und ähnlich wirkenden Elemente gleiche oder ähnliche Bezugszeichen verwendet, wobei auf eine wiederholte Beschreibung dieser Elemente verzichtet wird.In the following description of favorable exemplary embodiments of the present approach, the same or similar reference numerals are used for the elements shown in the different figures and acting in a similar manner, a repeated description of these elements being dispensed with.

Figur 1 zeigt eine schematische Darstellung einer Waschmaschine 100 mit einer Vorrichtung 105 zum Betreiben der Waschmaschine 100 gemäß einem Ausführungsbeispiel. Die Waschmaschine 100 weist eine Trommel 110 zum Aufnehmen von Wäsche 115 auf. Die Vorrichtung 105 ist ausgebildet, für einen Spülvorgang der Waschmaschine 100 eine Spülwassermenge zu ermitteln. Die Spülwassermenge wird unter Verwendung einer Beladungsmenge an Wäsche 115 in der Trommel 110, einer Restflotte in der Wäsche 115 zu Beginn des Spülvorgangs und eines Entwässerungsverhaltens der Wäsche 115 ermittelt. Die Vorrichtung 105 ist auch ausgebildet, unter Verwendung der ermittelten Spülwassermenge den Spülvorgang durchzuführen. Die Spülwassermenge ist dabei vollständig durch die Wäsche 115 gebunden. Während des Spülvorgangs wird eine Drehbewegung der Trommel 110 ausgeführt. Zudem ist die Vorrichtung 105 ausgebildet, die in der Wäsche 115 gebundene Flotte aus Restflotte und Spülwassermenge zu reduzieren. Zum Reduzieren wird eine weitere Drehbewegung der Trommel 110 ausgeführt. Figure 1 shows a schematic illustration of a washing machine 100 with a device 105 for operating the washing machine 100 according to an exemplary embodiment. The washing machine 100 has a drum 110 for holding laundry 115. The device 105 is designed to determine an amount of rinsing water for a washing process of the washing machine 100. The amount of rinse water is determined using a load of laundry 115 in the drum 110, a remaining liquor in the laundry 115 at the start of the rinsing process and a drainage behavior of the laundry 115. The device 105 is also designed to carry out the washing process using the determined amount of washing water. The amount of rinse water is completely bound by the laundry 115. Rotation of the drum 110 is carried out during the rinsing process. In addition, the device 105 is designed to reduce the liquor of residual liquor and amount of rinsing water bound in the laundry 115. Another rotation of drum 110 is performed to reduce.

Ein Spülen der Wäsche 115 mittels der hier gezeigten Vorrichtung 105 nur mit gebundener Flotte ist vorteilhafterweise energiesparend, denn ein Austausch zwischen gebundener Flotte und freier Flotte dauert länger als ein Spülen mit einer Spülwassermenge als gebundene Flotte, und ein Heben der Wäsche 115 aus der freien Flotte benötigt zudem mehr Energie.Rinsing the laundry 115 by means of the device 105 shown here only with a bound liquor is advantageously energy-saving, because an exchange between the bound liquor and free liquor takes longer than washing with a quantity of rinsing water as a bound liquor, and lifting the laundry 115 from the free liquor also requires more energy.

Gemäß einem Ausführungsbeispiel ist die Vorrichtung 105 auch ausgebildet, das Ermitteln der Spülwassermenge, das Durchführen des Spülvorgangs und das Reduzieren der in der Wäsche 115 gebundenen Flotte zyklisch zu wiederholen, um die Restflotte in der Wäsche 115 durch Spülwasser auszutauschen.According to one exemplary embodiment, the device 105 is also designed to repeat the determination of the amount of rinsing water, performing the rinsing process and reducing the liquor bound in the laundry 115 in order to replace the remaining liquor in the laundry 115 with rinsing water.

Auch ist die Vorrichtung 105 gemäß einem Ausführungsbeispiel dazu ausgebildet, bei jedem Wiederholen des Ermittelns der Spülwassermenge für ein weiteres Spülen der Wäsche 115 die Spülwassermenge gegenüber einer vorhergehend ermittelten Spülwassermenge zu erhöhen, um die Wäsche 115 zu spülen.According to one exemplary embodiment, the device 105 is also designed to repeat the washing water amount each time the washing 115 is rinsed again to increase the amount of rinsing water compared to a previously determined amount of rinsing water in order to rinse the laundry 115.

Unter Verwendung der Beladungsmenge der Trommel 110 und einer Wasserzulaufmenge ist die Vorrichtung 105 gemäß einem Ausführungsbeispiel ausgebildet, die Drehbewegung der Trommel 110 und/oder die weitere Drehbewegung der Trommel 110 zu bestimmen.Using the loading quantity of the drum 110 and a water inlet quantity, the device 105 is designed according to one exemplary embodiment to determine the rotational movement of the drum 110 and / or the further rotational movement of the drum 110.

Zudem ist die Vorrichtung 105 gemäß einem Ausführungsbeispiel dazu ausgebildet, die Beladungsmenge der Trommel 110 unter Verwendung eines Massenträgheitsmoments der Wäsche 115 und/oder eines Saugverhaltens der Wäsche 115 und zusätzlich oder alternativ einer erfassten Masse der Wäsche 115 zu erkennen.In addition, according to one exemplary embodiment, the device 105 is designed to recognize the loading quantity of the drum 110 using a mass moment of inertia of the laundry 115 and / or a suction behavior of the laundry 115 and additionally or alternatively a detected mass of the laundry 115.

Die Vorrichtung 105 ist gemäß einem Ausführungsbeispiel auch ausgebildet, die Restflotte in der Wäsche 115 zu ermitteln. Die Restflotte wird unter Verwendung einer Waschbeladungsmenge von einem dem Spülvorgang vorhergehenden Waschvorgang und der Beladungsmenge zu Beginn des Spülvorgangs ermittelt.According to one exemplary embodiment, the device 105 is also designed to determine the remaining liquor in the laundry 115. The remaining liquor is determined using a washing load quantity from a washing process preceding the rinsing process and the loading quantity at the beginning of the rinsing process.

Optional ist die Vorrichtung 105 zudem dazu ausgebildet, das Entwässerungsverhalten der Wäsche 115 unter Verwendung eines Massenträgheitsmoments der Wäsche 115 und/oder eines Drehmomentverlaufs der Trommel 110 zu ermitteln.Optionally, the device 105 is also designed to determine the dewatering behavior of the laundry 115 using a mass moment of inertia of the laundry 115 and / or a torque curve of the drum 110.

Im Folgenden sind beispielhaft ein Waschvorgang und der daran anschließende Spülvorgang in der Waschmaschine 100 unter Verwendung der Vorrichtung 105 beschrieben: Zunächst werden Informationen über die Beladung der Trommel 110 für den Waschvorgang gesammelt. Dazu wird die Beladungsmenge der Trommel 110 gemäß einem Ausführungsbeispiel mittels eines Massenträgheitsverfahren oder eines Saugverhaltens der Beladung oder einer Waagefunktion der Waschmaschine 100 bestimmt, und es wird die Wasserzulaufmenge für den Waschvorgang ermittelt. Diese Werte werden in der Steuerung des Spülvorgangs mittels der Vorrichtung 105 für das Ermitteln der Parameter des Spülvorgangs, wie die Spülwassermenge oder die Drehzahl der Trommel 110, anhand eines Modells verwendet. Anschließend wird anhand der ermittelten Beladungsmenge und der bekannten Wasserzulaufmenge ein erforderliches Drehzahlprofil der Trommel 110 für die erforderliche Restfeuchtereduzierung der Wäsche 115 für den Schleudergang nach der Hauptwäsche ermittelt, um die gebundene Flotte in der Wäsche 115 zu reduzieren. Bei einem Schleudervorgang nach der Hauptwäsche wird das Entwässerungsverhalten der Beladung der Trommel 110 beobachtet, um das vorher festgelegte Drehzahlprofil der Trommel 110 nochmals zu optimieren, und die so gewonnen Daten für die weitere Auslegung des Spülvorgangs, also für das Ermitteln der Spülwassermenge und der erforderlichen Drehzahl für die Drehbewegung zum Durchführen der Spülvorgangs und die weitere Drehbewegung zum Reduzieren der Flotte in der Wäsche 115 zu nutzen.A washing process and the subsequent rinsing process in the washing machine 100 using the device 105 are described below by way of example: First, information about the loading of the drum 110 for the washing process is collected. For this purpose, the load quantity of the drum 110 is determined according to an exemplary embodiment by means of an inertia method or a suction behavior of the load or a weighing function of the washing machine 100, and the water feed quantity for the washing process is determined. These values are used in the control of the rinsing process by means of the device 105 for determining the parameters of the rinsing process, such as the amount of rinsing water or the speed of the drum 110, on the basis of a model. A required speed profile of the drum 110 for the required residual moisture reduction of the laundry 115 for the spin cycle after the main wash is then determined on the basis of the determined loading amount and the known water feed amount in order to reduce the bound liquor in the laundry 115. During a spinning process after the main wash, the dewatering behavior of the loading of the drum 110 is observed in order to optimize the previously determined speed profile of the drum 110 again, and the data obtained in this way for the further design of the washing process, i.e. for determining the amount of washing water and the required speed for the rotary movement to carry out the rinsing process and the further rotary movement to reduce the liquor in the laundry 115.

Das Entwässerungsverhalten der Wäsche 115 wird gemäß einem Ausführungsbeispiel unter Verwendung eines Massenträgheitsmoments der Wäsche 115 und/oder eines Drehmomentverlaufs der Trommel 110 ermittelt. In Beschleunigungsphasen der Drehbewegung der Trommel 110 kann über ein Massenträgheitsverfahren das Massenträgheitsmoment der Beladung, also der Wäsche 115 und der in der Wäsche 115 gebundenen Flotte, bestimmt werden. Eine Differenz zwischen der am Beginn des Waschvorgangs und in der aktuellen Messung ermittelten Beladung entspricht der Wassermenge in der Beladung. Zum Ermitteln des Entwässerungsverhaltens mittels des Drehmomentverlaufs der Trommel 110 wird der Drehmomentbedarf oder der Leistungsbedarf mit der fortschreitenden Entwässerung der Wäsche 115 beobachtet: Auf einem Drehzahlplateau fällt der Drehmoment- bzw. Leistungsbedarf mit der fortschreitenden Entwässerung. Fällt die Änderung des Drehmoment- bzw. Leistungsverlaufs unter eine Grenze, so wird das Drehzahlplateau beendet, da die optimale Entwässerung auf diesem Plateau erreicht wurde. Am Ende des Schleuderns nach der Hauptwäsche wird nochmal über ein Massenträgheitsverfahren die Beladungsmenge der Trommel 110 bestimmt. Hiermit wird die verbliebene Wassermenge in der Beladung bestimmt. Ziel ist es, aus den ermittelten Werten die optimale Wasserzulaufmenge für den folgenden Schleudergang zu bestimmen. Anschließend wird die Spülwassermenge für den folgenden Spülgang ermittelt. Anhand der Beladungsmenge, des verbliebenen Wassers und des Entwässerungsverhaltens wird die Spülwassermenge für den folgenden Spülschritt festgelegt. Dabei wird nur so viel Wasser eingesetzt, dass sich keine freie Flotte bildet. Die gesamte Spülwassermenge, die zugegeben wird, wird in der Wäsche 115 gebunden. Danach wird die ermittelte Spülwassermenge zugegeben. Die Wasserzugabe der Spülwassermenge kann über die Türschauglas-Bespülung oder über die Umflutung der Waschmaschine 100 erfolgen. Wird das Wasser über die Umflutung in die Wäsche 115 eingebracht, so ist vorher der Umflutkreislauf mit Frischwasser zu spülen. Dazu wird Wasser in den Laugenbehälter der Waschmaschine 100 eingeleitet, und das eingeleitete Wasser wird wieder abgepumpt. Nach der Spülwasserzugabe wird zum Spülen eine Waschbewegung, also eine Drehbewegung der Trommel 110 ausgeführt. Anschließend wird die in der Wäsche 115 gebundene Flotte reduziert. Es folgt ein mehrfaches zyklisches Wiederholen des Ermittelns der Spülwassermenge, der Spülwasserzugabe und des Spülens sowie des Reduzierens der gebundenen Flotte. Dabei wird gemäß einem Ausführungsbeispiel in jedem Spülschritt des Spülvorgangs, also bei jeder Wiederholung, die Wassermenge des Spülwassers leicht erhöht, um die Konzentrationsdifferenz über den Austauschprozess zu vergrößern. Zum Schluss erfolgt das Endschleudern der Wäsche 115.The dewatering behavior of the laundry 115 is determined according to one exemplary embodiment using a mass moment of inertia of the laundry 115 and / or a torque curve of the drum 110. In acceleration phases of the rotary movement of the drum 110, the mass moment of inertia of the loading, that is to say the laundry 115 and the liquor bound in the laundry 115, can be determined using a mass inertia method. A difference between the load determined at the start of the washing process and in the current measurement corresponds to the amount of water in the load. In order to determine the dewatering behavior by means of the torque curve of the drum 110, the torque requirement or the power requirement is observed with the progressive dewatering of the laundry 115: the torque or power requirement falls with the progressive dewatering on a speed plateau. If the change in the torque or power curve falls below a limit, the speed plateau is ended because the optimal drainage has been achieved on this plateau. At the end of the spin cycle after the main wash, the load quantity of the drum 110 is determined again using an inertia method. This determines the amount of water remaining in the load. The aim is to determine the optimal water intake for the following spin cycle from the determined values. Then the amount of rinsing water is determined for the following rinse cycle. The amount of rinsing water for the subsequent rinsing step is determined based on the load, the remaining water and the drainage behavior. Only so much water is used that no free liquor is formed. The total amount of rinse water that is added is bound in the laundry 115. Then the determined amount of rinse water is added. The amount of water in the rinsing water can be added via the door sight glass rinsing or by washing the washing machine 100. If the water is introduced into the laundry 115 via the flooding, the flooding circuit must first be rinsed with fresh water. For this purpose, water is introduced into the tub of the washing machine 100, and the introduced water is pumped out again. After the rinse water has been added, a washing movement, that is to say a rotary movement of the drum 110, is carried out for rinsing. The liquor bound in the laundry 115 is then reduced. This is followed by repeated cyclical repetition of the determination of the amount of rinse water, the addition of rinse water and the rinsing as well as the reduction of the bound liquor. According to one embodiment, the amount of water in the rinsing water is slightly increased in each rinsing step of the rinsing process, that is to say with each repetition, in order to increase the concentration difference via the exchange process. Finally, the laundry 115 is finally spun.

Bei dem hier beschriebenen Spülen der Wäsche 115 nur mit gebundener Flotte wird durch den Verzicht auf die freie Flotte der Leistungsbedarf für die Waschbewegung der Trommel 110 reduziert und der Austausch zwischen Frischwasser und Waschlauge erfolgt in der gebundenen Flotte deutlich schneller als der Austausch zwischen freier Flotte und gebundener Flotte. Durch verringerte Schleuderdrehzahlen der Trommel 110 im Zwischenschleudern werden der Leistungsbedarf und die mechanische Belastung der Waschmaschine 100 reduziert. Der Zeitbedarf für einen Spülzyklus wird reduziert, sodass zusätzliche Zyklen zur Verbesserung der Spülwirkung durchgeführt werden können. Zusätzlich wird das Wasser durch die reduzierten Drehzahlen der Trommel 110 im Spülschleudern nicht so tief in die Wäsche 115 getrieben, sodass sich im Endschleudern bessere Endrestfeuchten erzielen lassen. Dabei werden die Steuerung der Entwässerung der Wäsche 115 anhand der Beladung, wie Menge und Art der Beladung, die Steuerung des Drehzahlverlaufs der Trommel 110 anhand des Drehmoment- bzw. Leistungsverlaufs durchgeführt. Die Entwässerung der Wäsche 115 wird über ein Massenträgheitsverfahren und durch Ermitteln der verbliebenen Restwassermenge überwacht. Die Spülwassermenge wird dabei für den folgenden Spülgang so ermittelt, dass die Wäsche 115 nur mit gebundener Flotte gespült wird.In the washing of the laundry 115 described here only with a bound liquor, the power requirement for the washing movement of the drum 110 is reduced by dispensing with the free liquor and the exchange between fresh water and washing liquor takes place in the tied fleet significantly faster than the exchange between free fleet and tied fleet. By reducing the spin speeds of the drum 110 in the intermediate spin, the power requirement and the mechanical load on the washing machine 100 are reduced. The time required for a rinse cycle is reduced so that additional cycles can be carried out to improve the rinsing effect. In addition, due to the reduced speeds of the drum 110 in the rinsing spin cycle, the water is not driven so deep into the laundry 115, so that better final residual moisture levels can be achieved in the final spin cycle. The control of the dewatering of the laundry 115 on the basis of the load, such as the amount and type of load, and the control of the speed curve of the drum 110 are carried out on the basis of the torque or power curve. The drainage of the laundry 115 is monitored using an inertia method and by determining the remaining amount of residual water. The amount of rinse water is determined for the following rinse cycle in such a way that the laundry 115 is rinsed only with a bound liquor.

Figur 2 zeigt ein Ablaufdiagramm eines Verfahrens 200 zum Betreiben einer Waschmaschine gemäß einem Ausführungsbeispiel. Die Waschmaschine weist eine Trommel zum Aufnehmen von Wäsche auf. Das Verfahren 200 weist einen Schritt 205 des Ermittelns, einen Schritt 210 des Durchführens und einen Schritt 215 des Reduzierens auf. Im Schritt 205 des Ermittelns wird eine Spülwassermenge für einen Spülvorgang der Waschmaschine ermittelt. Die Spülwassermenge wird unter Verwendung einer Beladungsmenge an Wäsche in der Trommel, einer Restflotte in der Wäsche zu Beginn des Spülvorgangs und eines Entwässerungsverhaltens der Wäsche ermittelt. Im Schritt 210 des Durchführens wird der Spülvorgang unter Verwendung der ermittelten Spülwassermenge durchgeführt. Dabei ist die Spülwassermenge vollständig durch die Wäsche gebunden. Während des Spülvorgangs wird eine Drehbewegung der Trommel ausgeführt. Im Schritt 215 des Reduzierens wird die in der Wäsche gebundene Flotte aus Restflotte und Spülwassermenge reduziert. Zum Reduzieren wird eine weitere Drehbewegung der Trommel ausgeführt. Figure 2 FIG. 12 shows a flowchart of a method 200 for operating a washing machine according to an exemplary embodiment. The washing machine has a drum for holding laundry. The method 200 has a step 205 of determining, a step 210 of performing and a step 215 of reducing. In step 205 of the determination, an amount of rinsing water for a rinsing process of the washing machine is determined. The amount of rinse water is determined using a load of laundry in the drum, a remaining liquor in the laundry at the start of the rinsing process and a drainage behavior of the laundry. In step 210 of performing, the rinsing process is carried out using the determined amount of rinsing water. The amount of rinse water is completely bound by the laundry. The drum is rotated during the rinsing process. In step 215 of the reduction, the liquor bound in the laundry from the remaining liquor and the amount of rinse water is reduced. A further rotary movement of the drum is carried out to reduce it.

Die Schritte 205 des Ermittelns, 210 des Durchführens 215 des Reduzierens werden gemäß einem Ausführungsbeispiel mehrfach zyklisch wiederholt.The steps 205 of determining, 210 of performing 215 of reducing are repeated several times cyclically in accordance with an exemplary embodiment.

Gemäß einem Ausführungsbeispiel umfasst das Verfahren 200 zudem einen Schritt 220 des Bestimmens. Im Schritt 220 wird unter Verwendung der Beladungsmenge und einer Wasserzulaufmenge eine Drehzahl zum Ausführen der Drehbewegung und zusätzlich oder alternativ der weiteren Drehbewegung der Trommel bestimmt. Der Schritt 220 des Bestimmens wird vor dem Schritt 210 des Durchführens und/oder vor dem Schritt 215 des Reduzierens ausgeführt.According to an exemplary embodiment, the method 200 also includes a step 220 of determining. In step 220, a rotational speed for executing the rotational movement and additionally or alternatively the further rotational movement of the drum is determined using the load quantity and a water inlet quantity. The step 220 of determining is carried out before the step 210 of performing and / or before step 215 of reducing.

Das Verfahren umfasst gemäß einem Ausführungsbeispiel auch einen Schritt 225 des Erkennens. Im Schritt 225 wird die Beladungsmenge unter Verwendung eines Massenträgheitsmoments der Wäsche und/oder eines Saugverhaltens der Wäsche und/oder einer erfassten Masse der Wäsche erkannt. Der Schritt 225 des Erkennens wird optional vor dem Schritt 205 des Ermittelns ausgeführt.According to one exemplary embodiment, the method also includes a step 225 of recognizing. In step 225, the load quantity is recognized using a mass moment of inertia of the laundry and / or a suction behavior of the laundry and / or a detected mass of the laundry. The step 225 of the recognition is optionally carried out before the step 205 of the determination.

Zudem umfasst das Verfahren 200 gemäß einem Ausführungsbeispiel einen Schritt 230 des Erfassens. Im Schritt 230 des Erfassens wird unter Verwendung eines Massenträgheitsmoments der Wäsche und/oder eines Drehmomentverlaufs der Trommel das Entwässerungsverhalten der Wäsche erfasst. Optional wird der Schritt 230 des Erfassens vor dem Schritt 205 des Ermittelns ausgeführt.In addition, according to one exemplary embodiment, the method 200 comprises a step 230 of capturing. In step 230 of the detection, the drainage behavior of the laundry is detected using a mass moment of inertia of the laundry and / or a torque curve of the drum. Optionally, step 230 of the detection is carried out before step 205 of the detection.

Umfasst ein Ausführungsbeispiel eine "und/oder"-Verknüpfung zwischen einem ersten Merkmal und einem zweiten Merkmal, so ist dies so zu lesen, dass das Ausführungsbeispiel gemäß einer Ausführungsform sowohl das erste Merkmal als auch das zweite Merkmal und gemäß einer weiteren Ausführungsform entweder nur das erste Merkmal oder nur das zweite Merkmal aufweist.If an embodiment includes a "and / or" link between a first feature and a second feature, it should be read in such a way that the embodiment according to one embodiment includes both the first feature and the second feature and according to a further embodiment either only that has the first feature or only the second feature.

Claims (10)

Verfahren (200) zum Betreiben einer Waschmaschine (100), wobei die Waschmaschine (100) eine Trommel (110) zum Aufnehmen von Wäsche (115) aufweist, wobei das Verfahren (200) folgende Schritte aufweist: Ermitteln (205) einer Spülwassermenge für einen Spülvorgang der Waschmaschine (100), wobei die Spülwassermenge unter Verwendung einer Beladungsmenge an Wäsche (115) in der Trommel (110), einer Restflotte in der Wäsche (115) zu Beginn des Spülvorgangs und eines Entwässerungsverhaltens der Wäsche (115) ermittelt wird; Durchführen (210) des Spülvorgangs unter Verwendung der ermittelten Spülwassermenge, wobei die Spülwassermenge vollständig durch die Wäsche (115) gebunden ist, wobei während des Spülvorgangs eine Drehbewegung der Trommel (110) ausgeführt wird; und Reduzieren (215) der in der Wäsche (115) gebundenen Flotte aus Restflotte und Spülwassermenge, wobei zum Reduzieren (215) eine weitere Drehbewegung der Trommel (110) ausgeführt wird. Method (200) for operating a washing machine (100), the washing machine (100) having a drum (110) for holding laundry (115), the method (200) comprising the following steps: Determining (205) an amount of rinse water for a washing process of the washing machine (100), the amount of rinsing water using a load of laundry (115) in the drum (110), a residual liquor in the laundry (115) at the start of the washing process and a drainage behavior of the Laundry (115) is determined; Performing (210) the rinsing process using the determined amount of rinsing water, the rinsing water amount being completely bound by the laundry (115), the drum (110) being rotated during the rinsing process; and Reduce (215) the liquor bound in the laundry (115) from the remaining liquor and the amount of rinsing water, with a further rotary movement of the drum (110) being carried out to reduce (215). Verfahren (200) gemäß Anspruch 1, wobei der Schritt (205) des Ermittelns, der Schritt (210) des Durchführens und der Schritt (215) des Reduzierens zyklisch wiederholt werden, um die Restflotte in der Wäsche (115) durch Spülwasser auszutauschen.The method (200) of claim 1, wherein the step (205) of determining, the step (210) of performing and the step (215) of reducing are repeated cyclically to replace the remaining liquor in the laundry (115) with rinse water. Verfahren (200) gemäß Anspruch 2, wobei bei jedem Wiederholen des Schritts (205) des Ermittelns die Spülwassermenge gegenüber einem vorhergehenden Ausführen des Schritts (205) des Ermittelns erhöht wird, um die Wäsche (115) zu spülen.The method (200) of claim 2, wherein each time the step (205) of determining is repeated, the amount of rinse water is increased over a previous execution of step (205) of determining to rinse the laundry (115). Verfahren (200) gemäß einem der vorangegangenen Ansprüche, mit einem Schritt (220) des Bestimmens einer Drehzahl zum Ausführen der Drehbewegung und/oder der weiteren Drehbewegung der Trommel (110) unter Verwendung der Beladungsmenge und einer Wasserzulaufmenge.Method (200) according to one of the preceding claims, with a step (220) of determining a rotational speed for carrying out the rotational movement and / or the further rotational movement of the drum (110) using the load quantity and a water feed quantity. Verfahren (200) gemäß einem der vorangegangenen Ansprüche, mit einem Schritt (225) des Erkennens der Beladungsmenge unter Verwendung eines Massenträgheitsmoments der Wäsche (115) und/oder eines Saugverhaltens der Wäsche (115) und/oder einer erfassten Masse der Wäsche (115).Method (200) according to one of the preceding claims, with a step (225) of recognizing the load quantity using a mass moment of inertia of the laundry (115) and / or a suction behavior of the laundry (115) and / or a detected mass of the laundry (115) . Verfahren (200) gemäß einem der vorangegangenen Ansprüche, wobei im Schritt (205) des Ermittelns unter Verwendung einer Waschbeladungsmenge von einem dem Spülvorgang vorhergehenden Waschvorgang und der Beladungsmenge zu Beginn des Spülvorgangs die Restflotte ermittelt wird.The method (200) according to any one of the preceding claims, wherein in step (205) of determining using a wash load amount of one of the The previous washing process and the load at the beginning of the washing process the remaining liquor is determined. Verfahren (200) gemäß einem der vorangegangenen Ansprüche, mit einem Schritt (230) des Erfassens des Entwässerungsverhaltens der Wäsche (115) unter Verwendung eines Massenträgheitsmoments der Wäsche (115) und/oder eines Drehmomentverlaufs der Trommel (110).Method (200) according to one of the preceding claims, with a step (230) of detecting the drainage behavior of the laundry (115) using a mass moment of inertia of the laundry (115) and / or a torque curve of the drum (110). Vorrichtung (105), die ausgebildet ist, um die Schritte des Verfahrens (200) gemäß einem der vorangegangenen Ansprüche in entsprechenden Einheiten auszuführen und/oder anzusteuern.Device (105) which is designed to carry out and / or to control the steps of the method (200) according to one of the preceding claims in corresponding units. Waschmaschine (100) mit einer Trommel (110) zum Aufnehmen von Wäsche (115) und mit einer Vorrichtung (105) gemäß Anspruch 8.Washing machine (100) with a drum (110) for holding laundry (115) and with a device (105) according to claim 8. Computer-Programmprodukt mit Programmcode zur Durchführung des Verfahrens (200) nach einem der Ansprüche 1 bis 7, wenn das Computer-Programmprodukt auf einer Vorrichtung (105) ausgeführt wird.Computer program product with program code for carrying out the method (200) according to one of claims 1 to 7, if the computer program product is executed on a device (105).
EP19194107.9A 2018-09-14 2019-08-28 Method for operating a washing machine Active EP3623514B1 (en)

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GB2303642A (en) * 1995-07-26 1997-02-26 Fisher & Paykel Rinsing procedure for automatic washing machine
US20120060299A1 (en) * 2010-09-14 2012-03-15 Lg Electronics Inc. Washing machine and method of controlling washing machine
EP3363942A1 (en) * 2017-02-16 2018-08-22 Miele & Cie. KG Water supply control and washing machine

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DE3900826A1 (en) * 1989-01-13 1990-07-19 Licentia Gmbh Method and device for controlling the rinsing cycle in washing machines
GB2303642A (en) * 1995-07-26 1997-02-26 Fisher & Paykel Rinsing procedure for automatic washing machine
US20120060299A1 (en) * 2010-09-14 2012-03-15 Lg Electronics Inc. Washing machine and method of controlling washing machine
EP3363942A1 (en) * 2017-02-16 2018-08-22 Miele & Cie. KG Water supply control and washing machine

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