EP2785904B1 - Procédé pour faire fonctionner un lave-linge à phase d'essorage améliorée - Google Patents

Procédé pour faire fonctionner un lave-linge à phase d'essorage améliorée Download PDF

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Publication number
EP2785904B1
EP2785904B1 EP12791758.1A EP12791758A EP2785904B1 EP 2785904 B1 EP2785904 B1 EP 2785904B1 EP 12791758 A EP12791758 A EP 12791758A EP 2785904 B1 EP2785904 B1 EP 2785904B1
Authority
EP
European Patent Office
Prior art keywords
laundry
distribution
time
drum
spin
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
EP12791758.1A
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German (de)
English (en)
Other versions
EP2785904A1 (fr
Inventor
Antje Rahfoth
Wolfram SCHUBERT
Jörg SKRIPPEK
Sven Vogel
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.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority to PL12791758T priority Critical patent/PL2785904T3/pl
Publication of EP2785904A1 publication Critical patent/EP2785904A1/fr
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Publication of EP2785904B1 publication Critical patent/EP2785904B1/fr
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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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/007—Methods for washing, rinsing or spin-drying for spin-drying only

Definitions

  • the invention relates to a method of operating a washing machine with an improved spin phase, ie a method for controlling a spin phase in a washing machine and a washing machine suitable for this purpose. More particularly, the invention relates to a method for controlling a spin phase with multiple spin stages in a laundry treatment process in a washing machine with a drum rotatably mounted in a tub around a substantially horizontal axis and program control, in which process in the spin phase prior to each spin step in a laundry dispensing step Distribution of the laundry items in an interior of the drum is made by increasing and / or decreasing a rotational speed of the drum, wherein for the laundry distribution step n before the centrifuging step n a maximum distribution time t max n or / and a maximum number m tr n of distribution tests for the Reaching or falling below a maximum value D max 1 of an acceptable uneven distribution of the laundry items is predetermined.
  • the treatment of laundry in a washing machine includes several treatment steps (wetting phase, pre-wash, main wash, rinse). After the main wash in the rinsing phase, the laundry still containing wash liquor and dirt residues is rinsed several times in the drum, wherein after the main wash and between the rinsing steps in each case is thrown. Subsequently, a final spin is performed, which has the goal that the residual moisture content of the laundry is as low as possible, so that a subsequent drying can proceed quickly and with the lowest possible energy consumption. For this purpose, a rotation number of the drum during the final spin is as high as possible.
  • laundry installation speed means a speed at which the laundry pieces have a centrifugal force greater than the gravitational force.
  • the laundry installation speed depends on the loading of the drum with laundry items. By a suitable selection of a speed can thus be specifically solved a certain proportion of the laundry items from the drum inner wall. The dissolved items of laundry can then be redistributed at the next increase in speed then on the drum inner wall.
  • a drum prior to the transition to a spin phase, a drum is generally accelerated for a predetermined period of time t set via a slow laundry dispensing phase or a laundry dispensing operation and an unbalance estimated which should be as low as possible during the spin phase.
  • the estimation of the unbalance usually takes place via the determination of an engine speed, a loading of the drum and an electrical power.
  • a position of the imbalance in the drum is first determined, which can be done at a laundry installation speed. Subsequently, the drum is accelerated or decelerated depending on the detected position of the unbalance of the drum, whereby the laundry items are redistributed in the drum.
  • the DE 196 16 985 A1 describes a method for compensating an imbalance occurring during the spinning of laundry items in a drum of a washing machine, in which, depending on a detected unbalance, a compensating liquid is introduced into cavities lying substantially in one plane on the drum side.
  • the DE 10 2008 055 091 A1 describes a method for operating a domestic appliance for the care of laundry, in which prior to a transition to a spin operation in a laundry distribution operation, a distribution of the laundry items in an interior of a drum of the household appliance by increasing and / or decreasing a rotational speed of the drum is made.
  • a so-called stability S a degree of concern of the items of laundry on an inner wall of the drum is determined as a function of a measured and / or control variable W, and increasing, lowering and / or maintaining the speed as a function of the degree of concern of the items of laundry.
  • the publication EP 16 93 498 A2 shows a method for controlling a spin speed of a washing machine.
  • the publication WO 2008/075987 A2 shows a method of operating a washing machine, wherein a spin speed is adjusted depending on a detected imbalance.
  • a laundry treatment program For optimum distribution of the laundry items prior to the actual spin, a laundry treatment program generally provides a fixed time and / or a number of attempts to achieve a predetermined upper limit for acceptable unbalance through non-uniform laundry distribution.
  • the object of the present invention was to provide a method for operating a washing machine, in which a spin phase can be optimally designed with regard to the time and efficiency required for this purpose.
  • a method should allow controlling a spin phase in a washing machine, whereby a spin phase can be provided with a balanced ratio of acceptable unbalance and time duration.
  • the object underlying the invention is achieved by a method for operating a washing machine for the treatment of laundry items and a suitable washing machine according to the independent claims.
  • Preferred embodiments of the invention are listed in the respective dependent claims.
  • Preferred embodiments of the method correspond to preferred embodiments of the washing machine, even if not separately pointed out here in each case.
  • the predetermined time t set n comprises the predetermined time for the laundry distribution step per se, but also the time that results when indicating a number of permissible partial washing attempts by means of a period of time.
  • the maximum value D max 1 of an acceptable uneven distribution of the laundry items is a maximum acceptable unbalance UN max 1 .
  • the imbalance can be determined in very different ways.
  • a motor current and / or an engine power and / or an engine energy and / or a deflection of a tub from a rest position a drum speed and / or a speed can be considered.
  • the unbalance is preferably determined based on a speed variation of the drum and / or a deflection of the tub.
  • the imbalance can be determined particularly reliably and accurately by means of the deflection of the tub, because a prediction of the imbalance from the speed fluctuation depends less strongly on the loading of the drum with laundry.
  • an imbalance of the drum caused by the laundry items is determined at a time at which the laundry items substantially completely abut the inner wall of the drum.
  • the degree of concern of the laundry items on the inner wall of the drum which can be referred to as a stability of a distribution of the laundry items in the interior of the drum, are used.
  • a stability of a distribution of the laundry items in the interior of the drum is described.
  • a user of the washing machine in the event of the presence of a difference .DELTA.t n is greater than 0 offered a choice to design the further spin-extraction phase in terms of a minimum temporal duration or an achievable minimum of residual moisture.
  • a user of the washing machine can make a selection even before the beginning of a laundry treatment step.
  • a user may also make such a selection about the further design of the spin phase during a laundry treatment program, eg when the user is informed about the presence of a difference ⁇ t n greater than 0.
  • the spin phase is shortened in time with a difference ⁇ t n greater than zero.
  • a part of the time difference is at least .DELTA.t n is greater than 0 to the predetermined time credits for the next Wäscheverteil Colour set time period t n + 1 is added.
  • x preferably lies in the range from 0.2 to 0.4 and y in the range from 0.6 to 0.8.
  • x may be equal to 0.3 and y may be equal to 0.7.
  • the time difference .DELTA.t n are summed up and the formed total period t max for the temporal extension of the duration t n of the set used last Wäscheverteil suitses before the final spin.
  • a time difference ⁇ t n greater than 0 is present on a display device of the washing machine, the presence of a good distribution of the laundry items in the drum is indicated.
  • the display device may be, for example, an optical or an acoustic display device.
  • a time difference ⁇ t n less than 0 is present on a display device of the washing machine, the presence of a poor distribution of the laundry items in the drum can be indicated. It may be also advantageously provided that in case of multiple presence of a time difference .DELTA.t n is less than 0, the spinning is stopped. Thus, such a situation can be displayed to a user of the laundry machine, who can then take appropriate countermeasures. For example, the loading of the drum with laundry items can be reduced or their arrangement in the drum can be influenced manually.
  • the washing machine of the present invention is a washing machine in the strict sense or a washer-dryer.
  • the term washing machine is used for both devices.
  • a washing machine generally has means for detecting uneven distribution of the laundry items in the drum.
  • a washing machine may have a travel sensor which is able to detect a deflection of the tub from a rest position and to generate a signal characteristic of this deflection.
  • the invention has the advantage that a spin phase can be optimally controlled. If less time is required in a laundry distribution step than intended, the resulting time credit can be used for further laundry distribution steps. Overall, this increases the probability that a good laundry distribution, in particular a laundry distribution with a small laundry imbalance is achieved. This allows in turn that a spin in the washing machine can be advantageously carried out with particularly high drum speeds. This leads to a reduced residual moisture of the laundry. Thus, the requirements for the label claim for the speed and residual moisture can be achieved particularly well. Finally, as a result of an improved spin method, it is also achieved that detergent residues are expelled particularly well. This is especially important for sensitive people who are sensitive to detergent residues in clothing. So a so-called "allergy program" could be carried out. Finally, due to the reduced imbalance, a tendency of the wash liquor to form foam is also reduced. In embodiments of the invention also a very short program duration can be achieved.
  • the method according to the invention also makes it possible to operate a washing machine with reduced centrifugal noise.
  • the presence of a time credit is an indication that a laundry distribution strategy in the washing machine is optimal.

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

Claims (11)

  1. Procédé d'exploitation d'une phase d'essorage avec plusieurs étapes d'essorage dans un procédé de traitement du linge au sein d'un lave-linge avec un tambour logé de manière mobile autour d'un axe essentiellement horizontal dans une cuve de lavage et une commande par programme, dans lequel procédé le linge est réparti dans un espace intérieur du tambour durant la phase d'essorage lors d'une étape de répartition du linge avant chaque étape d'essorage via un accroissement et/ou une diminution de la vitesse de rotation du tambour, dans lequel pour l'étape de répartition du linge n avant l'étape d'essorage n une durée de répartition maximale tmax n et/ou un nombre maximal mtr n de tentatives de répartition est déterminé au préalable pour l'atteinte ou la non-atteinte d'une valeur maximale Dmax 1 d'une répartition inégale acceptable du linge, caractérisé en ce
    (a) que la durée effectivement nécessaire tact n pour chaque étape de répartition du linge est déterminée ;
    (b) qu'une différence Δtn = tset n-tact n entre la durée effective tact n et une durée déterminée au préalable tset n pour l'étape de répartition du linge n est calculée ; et
    (c) qu'en fonction de la différence calculée Δtn = tset n-tact n une décision est prise quant au déroulement ultérieur de la phase d'essorage.
    qu'en présence d'une différence Δtn supérieure à zéro, la phase d'essorage est réduite dans le temps, ou
    qu'au moins une partie de la différence temporelle Δtn supérieure à 0 est ajoutée sous forme de crédit temporel à la durée déterminée au préalable tset n+1 pour la prochaine étape de répartition du linge, de telle manière que la différence temporelle Δtn supérieure à 0 soit ajoutée sous la forme d'un crédit temporel selon une portion x à la durée déterminée au préalable tset n+1 pour la prochaine étape de répartition du linge, la dernière étape de répartition du linge avant l'essorage final étant exclue, et une portion y, dans lequel x+y=1, à la durée tset n+1 de la dernière étape de répartition du linge avant l'essorage final, ou
    que les différences temporelles Δtn sont additionnées et que la période de temps totale constituée tmax est utilisée pour la prolongation temporelle de la durée tset n de la dernière étape de répartition du linge avant l'essorage final.
  2. Procédé selon la revendication 1, caractérisé en ce qu'un balourd acceptable maximal UNmax 1 est déterminé au préalable sous forme de valeur maximale Dmax 1 d'une répartition inégale acceptable du linge.
  3. Procédé selon la revendication 2, caractérisé en ce que le balourd est déterminé au moyen d'une variation de la vitesse de rotation du tambour et/ou une déviation de la cuve de lavage.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'en présence d'une différence Δtn supérieure à 0, une possibilité de sélection s'offre à un utilisateur du lave-linge afin d'axer la phase d'essorage suivante sur une durée temporelle minimale ou sur une humidité résiduelle minimale possible à atteindre.
  5. Procédé selon la revendication 1, caractérisé en ce que x se situe entre 0,2 et 0,4 et y entre 0,6 et 0,8.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'en présence d'une différence temporelle Δtn supérieure à 0 l'existence d'une bonne répartition du linge dans le tambour s'affiche sur un dispositif d'affichage du lave-linge.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce qu'en présence d'une différence temporelle Δtn inférieure à 0 l'existence d'une mauvaise répartition du linge dans le tambour s'affiche sur un dispositif d'affichage du lave-linge.
  8. Procédé selon la revendication 7, caractérisé en ce que l'essorage est interrompu en présence d'une différence temporelle Δtn répétée inférieure à 0.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que dans le cas où Δtn est supérieur à une valeur seuil déterminée au préalable ts, une valeur Dmax 2 < Dmax 1 est déterminée pour la valeur maximale d'une répartition inégale acceptable du linge.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que des valeurs d'une durée déterminée au préalable tset pour l'étape de répartition du linge en fonction d'une quantité de chargement du lave-linge en linge et/ou en fonction de la valeur maximale Dmax pour la valeur maximale d'une répartition inégale acceptable du linge sont enregistrés dans le dispositif de commande du lave-linge.
  11. Lave-linge avec un tambour logé de manière mobile autour d'un axe essentiellement horizontal dans une cuve de lavage et une commande par programme prévue afin d'exécuter un procédé dans lequel le linge est réparti dans un espace intérieur du tambour durant la phase d'essorage lors d'une étape de répartition du linge avant chaque étape d'essorage via un accroissement et/ou une diminution de la vitesse de rotation du tambour, dans lequel pour l'étape de répartition du linge n avant l'étape d'essorage n une durée de répartition maximale tmax et/ou un nombre maximal mtr de tentatives de répartition est déterminé au préalable pour l'atteinte ou la non-atteinte d'une valeur maximale Dmax 1 d'une répartition inégale acceptable du linge, caractérisé en ce que le lave-linge est prévu afin d'exécuter un procédé selon l'une des revendications précédentes.
EP12791758.1A 2011-12-02 2012-11-27 Procédé pour faire fonctionner un lave-linge à phase d'essorage améliorée Active EP2785904B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12791758T PL2785904T3 (pl) 2011-12-02 2012-11-27 Sposób pracy pralki z ulepszoną fazą wirowania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011087644A DE102011087644B3 (de) 2011-12-02 2011-12-02 Verfahren zum Betrieb einer Waschmaschine mit einer verbesserten Schleuderphase
PCT/EP2012/073695 WO2013079470A1 (fr) 2011-12-02 2012-11-27 Procédé pour faire fonctionner un lave-linge à phase d'essorage améliorée

Publications (2)

Publication Number Publication Date
EP2785904A1 EP2785904A1 (fr) 2014-10-08
EP2785904B1 true EP2785904B1 (fr) 2016-02-10

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EP12791758.1A Active EP2785904B1 (fr) 2011-12-02 2012-11-27 Procédé pour faire fonctionner un lave-linge à phase d'essorage améliorée

Country Status (6)

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EP (1) EP2785904B1 (fr)
CN (1) CN103958758B (fr)
DE (1) DE102011087644B3 (fr)
PL (1) PL2785904T3 (fr)
RU (1) RU2571947C1 (fr)
WO (1) WO2013079470A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103911804B (zh) * 2013-01-07 2017-09-29 青岛海尔滚筒洗衣机有限公司 一种洗衣机脱水分布控制方法
CN104233702B (zh) * 2013-06-24 2018-02-23 青岛海尔滚筒洗衣机有限公司 一种洗衣机脱水分布控制方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141901C2 (de) * 1981-10-22 1986-06-19 Hoesch Ag, 4600 Dortmund Kombinierte Wasch- und Schleudermaschine oder dgl.
IT1271782B (it) * 1994-12-21 1997-06-09 Whirlpool Italia Metodo e disposizione per ottenere il bilanciamento del carico nelle macchine lavabiancheria
IT1279162B1 (it) * 1995-03-14 1997-12-04 Merloni Elettrodomestici Spa Metodo per il bilanciamento del carico in una macchina per il lavaggio e/o l'asciugatura di biancheria, e macchina che implementa tale metodo
DE19616985A1 (de) * 1996-04-27 1997-10-30 Aeg Hausgeraete Gmbh Verfahren zum Unwuchtausgleich
DE19753382A1 (de) * 1997-12-02 1999-06-10 Ako Werke Gmbh & Co Verfahren zur Verteilung der Wäsche in einer Wäschetrommel einer Waschmaschine
GB2368071A (en) * 2000-10-17 2002-04-24 Notetry Ltd Method of operating a laundry appliance
US7331075B2 (en) * 2003-08-07 2008-02-19 Lg Electronics Inc. Spin-dry control method in washing machine
US7530133B2 (en) * 2005-02-18 2009-05-12 Whirlpool Corporation Method for controlling a spin cycle in a washing machine
NZ552422A (en) * 2006-12-21 2009-09-25 Fisher & Paykel Appliances Ltd Laundry appliance including control means which energises a motor to evenly distribute a load in response to signals from load sensors
DE102008055091A1 (de) * 2008-12-22 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Steuern eines Wäscheverteilbetriebs eines Haushaltsgeräts zur Pflege von Wäschestücken

Also Published As

Publication number Publication date
CN103958758B (zh) 2016-08-31
WO2013079470A1 (fr) 2013-06-06
DE102011087644B3 (de) 2012-12-13
EP2785904A1 (fr) 2014-10-08
CN103958758A (zh) 2014-07-30
RU2571947C1 (ru) 2015-12-27
PL2785904T3 (pl) 2016-08-31

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