EP2785904A1 - 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

Info

Publication number
EP2785904A1
EP2785904A1 EP12791758.1A EP12791758A EP2785904A1 EP 2785904 A1 EP2785904 A1 EP 2785904A1 EP 12791758 A EP12791758 A EP 12791758A EP 2785904 A1 EP2785904 A1 EP 2785904A1
Authority
EP
European Patent Office
Prior art keywords
laundry
time
spin
distribution
drum
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
EP12791758.1A
Other languages
German (de)
English (en)
Other versions
EP2785904B1 (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
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL12791758T priority Critical patent/PL2785904T3/pl
Publication of EP2785904A1 publication Critical patent/EP2785904A1/fr
Application granted granted Critical
Publication of EP2785904B1 publication Critical patent/EP2785904B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 spin step n a maximum distribution time t max n or / and a maximum number m tr n to Verteilver- seek is predetermined for reaching or falling below a maximum value D max 1 an acceptable non-uniform distribution of the laundry.
  • 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 items When spinning the drum of the washing machine rotates at a very high speed, for example, 1,200 revolutions / min.
  • the laundry items are firmly attached to an inner wall of the drum. If these items of laundry but unevenly distributed on the inner wall of the drum, there is an imbalance.
  • the drum comes into vibration, which also connected to the drum parts such as tubs and Engine detected. These vibrations can be very strong, so that the drum can not be raised to the predetermined speed to achieve a desired spin result. It is therefore desirable to reduce the imbalance caused in a spin phase of the drum by an uneven distribution of the laundry on the inner wall of the drum.
  • the distribution of the laundry items can be influenced in a range of a laundry installation speed, as known, by specifically increasing or decreasing the rotational speed of the drum.
  • 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.
  • 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 imbalance, a compensating liquid is introduced into cavities lying in the drum side substantially in one plane.
  • DE 10 2008 055 091 A1 describes a method for operating a domestic appliance for the care of items 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 speed the drum is made.
  • a so-called stability S a degree of abutment of the items of laundry on an inner wall of the drum is determined as a function of a measured and / or controlled variable W and an increase, decrease and / or maintenance of the rotational speed is carried out as a function of the degree of contact of the items of laundry ,
  • DE 696 22 067 T3 describes a method for balancing in a laundry washing and / or drying machine and a machine for carrying out this method.
  • a drum is rotated at a first speed, which causes the garments to largely adhere to the drum walls, and in a detection phase determines the state of equilibrium during this initial phase.
  • Compensatory measures are then provided by the load itself. With these measures, the reduction in the number of drums is reduced from a first speed (90 rpm) to a predetermined second speed (45-55 rpm) which is suitable for causing the laundry to leave the drum walls, so that these themselves fall in the direction of the drum.
  • the second speed is reached, the speed is increased again before the laundry collects on the drum bottom.
  • 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 invention thus relates to a method for controlling a spin phase with several 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 a program control, in which method in the spin phase before each spin step in a laundry distribution step a 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 spin step n a maximum distribution time t max n or / and a maximum number m tr n of distribution experiments for the reaching or falling below a maximum value D max 1 of an acceptable uneven distribution of the laundry items is predetermined, and where
  • 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. Such a method is described in detail in DE 10 2008 055 091 A1.
  • a user of the washing machine is offered, in the case of the presence of a difference At n greater than 0, a selection option for designing the further spin phase with regard to a minimum time duration or an achievable minimum 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 At n greater than 0.
  • the spin phase is shortened in time with a difference At n greater than zero.
  • At n greater than 0 is added to the time interval t set n + 1 predetermined for the next laundry distribution step.
  • 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 differences At n are summed up and the total time period t max formed is used for the time extension of the duration t set n of the last laundry distribution step before the final spin.
  • the presence of a time difference At n greater than 0, ie a time credit, is an important information both on the history of a laundry treatment process as well as the future course of a laundry treatment process and its design options. In a preferred embodiment of the invention, therefore, if a time difference At 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 At 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.
  • 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.
  • a time credit within the meaning of the invention can lead to further measures according to the invention.
  • At n is greater than a predetermined threshold value t s
  • a value D max 2 ⁇ D max 1 for the maximum value of an acceptable nonuniform distribution of the laundry items may advantageously be determined. It is then sought an even better distribution of the laundry before a spin step.
  • the invention also relates to a washing machine with a drum rotatably mounted in a tub about a substantially horizontal axis and a program control, which is adapted to perform a method in which in the spin phase prior to each spin step in a laundry distribution step, a 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 spin step n a maximum distribution time t max or / and a maximum number m tr of distribution attempts for reaching or falling below a maximum value D max 1 an acceptable uneven distribution of the laundry is given.
  • the washing machine according to the invention is adapted to a method with the steps that
  • 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 release for the speed and residual moisture can be achieved particularly well.
  • 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.

Landscapes

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

Abstract

L'invention concerne un procédé de commande d'une phase d'essorage comprenant plusieurs étapes d'essorage dans un procédé de traitement de linge dans un lave-linge pourvu d'un tambour monté à rotation autour d'un axe sensiblement horizontal dans une cuve de lessivage et d'une commande à programme. Selon ce procédé, lors de la phase d'essorage, il est procédé, avant chaque étape d'essorage, à une répartition des pièces de linge dans une étape de répartition de linge dans l'espace intérieur du tambour par une augmentation et/ou une diminution d'une vitesse de rotation du tambour. Avant l'étape d'essorage (n), un temps de répartition maximal (tmax n) et/ou un nombre maximal (mtr n) d'essais de répartition pour atteindre ou passer en dessous d'une valeur maximale (Dmax 1) d'une répartition inégale acceptable des pièces de linges est prédéfini pour l'étape de répartition de linge (n), (a) le temps effectivement nécessaire tact n pour chaque étape de répartition de ligne (n) étant déterminé, (b) une différence Δtn = tset n-tact n entre le temps effectif (tact n) et un temps prédéfini (tset n) pour l'étape de répartition de linge (n) étant calculée, et (c) une décision relative au déroulement ultérieur de la phase d'essorage étant prise en fonction de la différence calculée Δtn = tset n-tact n. L'invention concerne également un lave-linge approprié pour mettre en œuvre ce procédé.
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 true EP2785904A1 (fr) 2014-10-08
EP2785904B1 EP2785904B1 (fr) 2016-02-10

Family

ID=47220763

Family Applications (1)

Application Number Title Priority Date Filing Date
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)

Country Link
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013079470A1 *

Also Published As

Publication number Publication date
EP2785904B1 (fr) 2016-02-10
CN103958758B (zh) 2016-08-31
PL2785904T3 (pl) 2016-08-31
RU2571947C1 (ru) 2015-12-27
CN103958758A (zh) 2014-07-30
DE102011087644B3 (de) 2012-12-13
WO2013079470A1 (fr) 2013-06-06

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