EP3623514B1 - Verfahren zum betreiben einer waschmaschine - Google Patents

Verfahren zum betreiben einer waschmaschine Download PDF

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Publication number
EP3623514B1
EP3623514B1 EP19194107.9A EP19194107A EP3623514B1 EP 3623514 B1 EP3623514 B1 EP 3623514B1 EP 19194107 A EP19194107 A EP 19194107A EP 3623514 B1 EP3623514 B1 EP 3623514B1
Authority
EP
European Patent Office
Prior art keywords
laundry
rinsing
drum
water
liquor
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.)
Active
Application number
EP19194107.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3623514A1 (de
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
Original Assignee
Miele und Cie KG
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Publication date
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Publication of EP3623514A1 publication Critical patent/EP3623514A1/de
Application granted granted Critical
Publication of EP3623514B1 publication Critical patent/EP3623514B1/de
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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 for operating a washing machine.
  • washing liquor In order to remove residues of detergent or dirt from the laundry after a main wash cycle of laundry in a washing machine, a proportion of a washing liquor can be pumped out and the laundry can be spun. Any remaining washing liquor bound in the laundry can then be diluted by adding a lot 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 create an improved method for operating a washing machine.
  • laundry in a washing machine can also only be rinsed out with bound liquor.
  • the liquor remaining in the laundry can be exchanged for a specially determined amount of added rinsing water, in which case rinsing with free liquor can be dispensed with.
  • it is only possible to rinse with 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 the wash liquor in the bound liquor and the added water in the bound liquor can advantageously take place more quickly than the exchange between bound liquor and free liquor, as a result of which the rinsing can be implemented in a time-saving manner.
  • the energy and water consumption can be reduced, while the washing performance can be maintained.
  • a method for operating a washing machine is presented.
  • the washing machine has a drum for receiving laundry.
  • the method has a step of determining, a step of performing and a step of reducing.
  • a quantity of rinsing water for a rinsing process of the washing machine is determined.
  • the amount of rinsing water is determined using a load of laundry in the drum, a residual liquor in the laundry at the beginning 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 rinsing water is completely bound by the laundry.
  • the drum rotates.
  • the reduction step the liquor bound in the wash is reduced from residual liquor and the amount of rinsing water. To reduce, another rotary movement of the drum is performed.
  • the washing machine can be, for example, a washing machine or a combined washer-dryer.
  • the drum can be rotatably arranged in a tub.
  • the rinsing process can be understood, for example, as a predefined washing program of 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, in such a way that the laundry is partially or completely saturated during rinsing.
  • the amount of rinsing water can be completely absorbed by the laundry or be bound by the laundry.
  • the liquor can be understood to mean the amount of liquid that is used in the washing machine during a wash cycle.
  • the liquor can consist, for example, of tap water with or without detergent.
  • the residual liquor can be understood to mean the liquor remaining in the laundry from a washing process preceding the rinsing process.
  • the load quantity can be the mass of laundry that is accommodated in the drum.
  • the load quantity can be detected, for example, using a weighing method or a mass inertia method.
  • the drainage behavior of the laundry can depend on the type of textile, for example.
  • the rotary movement and the further rotary movement of the drum can be, for example, a rotation, a reversal and, additionally or alternatively, a spinning of the laundry that takes place at a different speed.
  • the speed can be in a range from 50 to 1200 revolutions per minute, for example.
  • the further rotary movement can be carried out, for example, at a higher speed than the rotary movement.
  • the determination step, the implementation step and the reduction step can be repeated cyclically in order to remove the remaining liquor replaced in the laundry with rinsing water. This is advantageous for efficiently rinsing out residues of detergent or dirt that may be in the residual liquor.
  • the amount of rinsing water can be increased each time the step of determining is repeated, compared to a previous execution of the step of determining, in order to rinse the laundry.
  • the residual liquor can advantageously be rinsed out in this way. Since only bound liquor is used for rinsing, rinsing is particularly resource-saving.
  • the method can also include a step of determining.
  • the rotational speed for carrying out the rotary movement and additionally or alternatively for carrying out the further rotary movement of the drum can be determined using the load quantity and a water intake quantity.
  • the water intake quantity can relate to a washing process of the washing machine preceding the rinsing process.
  • the speed for other rotary movements of the drum can also be determined, for example a speed for a rotary movement of the drum for the washing process preceding the rinsing process.
  • the rotation of the drum can be determined based on the load on the drum, which saves energy.
  • the method includes a step of detecting the load quantity.
  • the load amount can be detected using a moment of inertia of the laundry.
  • the load can be detected based on the suction behavior of the laundry.
  • 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 intake quantity for the washing process preceding the rinsing process.
  • the residual liquor is determined according to the invention using a wash load quantity from a wash operation preceding the rinsing operation and the load quantity at the start of the rinsing operation.
  • the washing load quantity and the load quantity can be determined, for example, in the detection step.
  • the residual liquor can be determined, for example, as the difference between the washing load and the load.
  • the amount of rinsing water can thereby be determined particularly precisely, as a result of which the rinsing process can be carried out in a particularly water- and energy-saving manner.
  • the method according to the invention also includes a step of detecting the dewatering behavior of the laundry.
  • the dewatering behavior of the laundry can Using a mass moment of inertia of the laundry and are additionally or alternatively detected using a torque curve of the drum. Detecting the dewatering behavior also advantageously enables a particularly precise determination of the amount of flushing water.
  • the approach presented here also creates a device that is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices.
  • the object on which the invention is based can also be achieved quickly and efficiently by this embodiment variant of the invention in the form of a device.
  • the device can be designed to read in 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 may represent a control signal or a data signal that may be provided at an output interface of the device.
  • the device can be designed to determine the output signals using a processing specification implemented in hardware or software.
  • the device can include a logic circuit, an integrated circuit or a software module and can be implemented as a discrete component, for example, or can be comprised of a discrete component.
  • the washing machine has a drum for accommodating laundry and an embodiment of the above device.
  • the washing machine can be designed, for example, as a washing machine or as a combined washer-dryer.
  • An unclaimed 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, then 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 representation of a washing machine 100 with a device 105 for operating the washing machine 100 according to an embodiment.
  • the washing machine 100 has a drum 110 for receiving laundry 115 .
  • the device 105 is designed to determine a quantity of rinsing water for a rinsing process of the washing machine 100 .
  • the amount of rinsing water is determined using a load of laundry 115 in the drum 110, a residual 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 rinsing process using the determined amount of rinsing water.
  • the amount of rinsing water is completely bound by the laundry 115 .
  • the drum 110 rotates.
  • the device 105 is designed to reduce the liquor bound in the laundry 115 from residual liquor and the amount of rinsing water. A further rotational movement of the drum 110 is carried out for the reduction.
  • Rinsing the laundry 115 using the device 105 shown here only with bound liquor is advantageously energy-saving, because an exchange between bound liquor and free liquor takes longer than rinsing with a quantity of rinsing water as bound liquor, and lifting the laundry 115 from the free liquor also requires more energy.
  • the device 105 is also designed to cyclically repeat the determination of the amount of rinsing water, the execution of the rinsing process and the reduction of the liquor bound in the laundry 115 in order to replace the residual liquor in the laundry 115 with rinsing water.
  • the device 105 is also designed to increase the amount of rinsing water compared to a previously determined amount of rinsing water in order to rinse the laundry 115 each time the determination of the amount of rinsing water is repeated for a further rinsing of the laundry 115 .
  • the device 105 is designed to determine the rotational movement of the drum 110 and/or the further rotational movement of the drum 110 using the load quantity of the drum 110 and a water intake quantity.
  • the device 105 is designed to detect the load 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 residual liquor in the laundry 115 .
  • the residual liquor is determined using a wash load from a wash process preceding the rinsing process and the load at the start of the rinsing process.
  • the device 105 is also designed to determine 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.
  • 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 using a mass inertia method or a suction behavior of the load or a weighing function of the washing machine 100, and the water intake 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, using a model.
  • a required speed profile of the drum 110 for the required residual moisture reduction in the laundry 115 for the spin cycle after the main wash is then determined on the basis of the load quantity determined and the known water intake quantity in order to reduce the bound liquor in the laundry 115 .
  • the dewatering behavior of the load in the drum 110 is observed in order to further optimize the previously defined speed profile of the drum 110, and the data obtained in this way for the further design of the rinsing cycle, i.e. for determining the amount of rinsing water and the required speed to use for the rotary movement to carry out the rinsing process and the further rotary movement to reduce the liquor in the laundry 115.
  • the drainage behavior of the laundry 115 is determined using a mass moment of inertia of the laundry 115 and/or a torque curve of the drum 110 .
  • the moment of inertia of the load ie the laundry 115 and the liquor bound in the laundry 115
  • the torque requirement or the power requirement is observed as the drainage of the laundry 115 progresses: on a speed plateau, the torque or power requirement falls as the drainage progresses.
  • the load quantity of the drum 110 is determined again using a mass inertia method. This determines the amount of water remaining in the load.
  • the aim is to determine the optimal water intake quantity for the following spin cycle from the determined values.
  • the amount of flushing water for the following flushing cycle is then determined.
  • the amount of rinsing water for the following rinsing step is determined on the basis of the load, the remaining water and the dewatering 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 wash 115. Then the calculated amount of rinsing water is added.
  • the addition of water to the amount of flushing water can take place via the flushing of the door sight glass or via the flooding of 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. To this end, water is introduced into the tub of the washing machine 100 and the water introduced is pumped out again. After the rinsing water has been added, a washing movement, ie a rotary movement of the drum 110, is carried out for rinsing. The liquor bound in the wash 115 is then reduced. This is followed by a multiple cyclical repetition of determining the amount of rinsing water, adding rinsing water and rinsing, as well as reducing the bound liquor.
  • the amount of water in the rinsing water is increased slightly in each rinsing step of the rinsing process, ie with each repetition, in order to increase the concentration difference over the exchange process. Finally, the laundry is spun 115.
  • 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 suds takes place in the bound liquor much faster than the exchange between free liquor and bound fleet.
  • the reduced spin speeds of the drum 110 in the intermediate spin cycle reduce the power requirement and the mechanical load on the washing machine 100 .
  • the time required for a rinsing cycle is reduced, so that additional cycles can be carried out to improve the rinsing effect.
  • the water is im by the reduced speeds of the drum 110 Rinse spin cycles are not driven so deeply into the laundry 115 that better final residual moisture levels can be achieved in the final spin cycle.
  • the dewatering of the laundry 115 is controlled based on the load, such as the amount and type of load, and the speed profile of the drum 110 is controlled based on the torque or power profile.
  • the dewatering of the laundry 115 is monitored using a mass inertia method and by determining the remaining amount of residual water.
  • the amount of rinsing water is determined for the following rinsing cycle in such a way that the laundry 115 is only rinsed with bound liquor.
  • FIG 2 shows a flowchart of a method 200 for operating a washing machine according to an embodiment.
  • the washing machine has a drum for receiving laundry.
  • the method 200 has a step 205 of determining, a step 210 of performing and a step 215 of reducing.
  • step 205 of determination a quantity of rinsing water for a rinsing process of the washing machine is determined.
  • the amount of rinsing water is determined using a load of laundry in the drum, a residual liquor in the laundry at the beginning of the rinsing process and a drainage behavior of the laundry.
  • the rinsing process is performed using the determined amount of rinsing water.
  • the amount of rinsing water is completely bound by the laundry.
  • the drum rotates.
  • the reduction step 215 the liquor bound in the wash is reduced from residual liquor and the amount of rinse water. To reduce, another rotary movement of the drum is performed.
  • the steps 205 of determining, 210 of carrying out 215 of the reduction are repeated cyclically multiple times.
  • the method 200 also includes a step 220 of determining.
  • a speed for performing the rotary movement and additionally or alternatively the further rotary movement of the drum is determined using the load quantity and a water intake quantity.
  • the step 220 of determining is performed before the step 210 of performing and/or before the step 215 of reducing.
  • the method also includes a step 225 of recognition.
  • the load quantity is detected 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 recognizing is optionally performed before the step 205 of determining.
  • the method 200 includes a step 230 of detecting.
  • step 230 of detection the drainage behavior of the laundry is detected using a mass moment of inertia of the laundry and/or a torque profile of the drum.
  • step 230 of detecting is performed before step 205 of determining.
  • an embodiment includes an "and/or" link between a first feature and a second feature, this 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 having 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)
EP19194107.9A 2018-09-14 2019-08-28 Verfahren zum betreiben einer waschmaschine Active EP3623514B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018122471.0A DE102018122471A1 (de) 2018-09-14 2018-09-14 Verfahren und Vorrichtung zum Betreiben einer Waschmaschine und Waschmaschine

Publications (2)

Publication Number Publication Date
EP3623514A1 EP3623514A1 (de) 2020-03-18
EP3623514B1 true EP3623514B1 (de) 2023-04-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19194107.9A Active EP3623514B1 (de) 2018-09-14 2019-08-28 Verfahren zum betreiben einer waschmaschine

Country Status (4)

Country Link
EP (1) EP3623514B1 (pl)
DE (1) DE102018122471A1 (pl)
ES (1) ES2943110T3 (pl)
PL (1) PL3623514T3 (pl)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900826C2 (de) * 1989-01-13 1996-04-25 Aeg Hausgeraete Gmbh Verfahren zum Spülen von Wäsche in einer Waschmaschine
DE4138428A1 (de) * 1991-11-22 1993-05-27 Gisela Stoll Verfahren zum spuelen von waesche in einer waschmaschine
NZ272651A (en) * 1995-07-26 1998-04-27 Fisher & Paykel Automatic laundry machine; method of washing and rinsing involving control of the various steps of the washing cycle; washing/rinsing apparatus
EP2616581B1 (en) * 2010-09-14 2022-01-26 LG Electronics Inc. Method of controlling a washing machine
DE102017103167A1 (de) * 2017-02-16 2018-08-16 Miele & Cie. Kg Wasserzulaufsteuerung und Waschautomat

Also Published As

Publication number Publication date
EP3623514A1 (de) 2020-03-18
DE102018122471A1 (de) 2020-03-19
PL3623514T3 (pl) 2023-06-19
ES2943110T3 (es) 2023-06-09

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