EP1971714B1 - Machine à laver et procédé de commande - Google Patents

Machine à laver et procédé de commande Download PDF

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Publication number
EP1971714B1
EP1971714B1 EP06819933.0A EP06819933A EP1971714B1 EP 1971714 B1 EP1971714 B1 EP 1971714B1 EP 06819933 A EP06819933 A EP 06819933A EP 1971714 B1 EP1971714 B1 EP 1971714B1
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EP
European Patent Office
Prior art keywords
foam
drum
spinning
washing
foam level
Prior art date
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Active
Application number
EP06819933.0A
Other languages
German (de)
English (en)
Other versions
EP1971714A1 (fr
Inventor
Aysegul Ayday Besikci
Levent Gokkus
Ebru Gungor
Gokhan Yildiz
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP1971714A1 publication Critical patent/EP1971714A1/fr
Application granted granted Critical
Publication of EP1971714B1 publication Critical patent/EP1971714B1/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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/06—Arrangements for preventing or destroying scum

Definitions

  • This invention relates to a washing machine and a control method.
  • a washing machine according to the preamble of claim 1 is know from EP 0657576 A1 .
  • the aim of the present invention is the realization of a washing machine and control method, wherein excessive foam formation during the washing process is prevented without using additional equipments.
  • a foam level sensor is used to detect excessive foaming that can occur particularly during the spinning after main wash. If foam level sensed by the foam level sensor exceeds the pre-determined maximum foam level, a foam decreasing algorithm is executed in order to decrease the foam formed.
  • the executed foam decreasing algorithm as the foam is sensed, the drum rotating at the spinning speed is immediately stopped and the spinning step is interrupted. Then, the drum starts operating bi-directionally or unidirectionally preferably with starts and stops as in main washing step with a pre-determined low speed and/or runtime rate so as not to increase the foaming and the foam mixes with water.
  • the draining pump is operated as the drum starts operating to drain the foamed water.
  • the foam decreasing algorithm executed by interrupting the spinning after the main washing is also executed in the spinning after rinsing processes when needed and the excessive foaming is prevented.
  • the washing machine (1) comprises a drum (2) into which the laundry is placed, a tub (3) in which the drum (2) moves, a motor (4) which actuates the drum (2), a draining pump (5) which drains the washing water out of the washing machine (1) at the end of the washing process, and a foam level sensor (6) which detects the foam level inside the drum (2).
  • the washing steps such as main washing, spinning and rinsing are executed in pre-determined durations in accordance with the washing program selected by the user.
  • the drum (2) is stopped by interrupting the spinning step and the drum (2) is moved in a pre-determined speed (V2) and/or runtime ratio (R2) so as to provide the mixing of the water and the foam and the water mixed with the foam is drained by operating the draining pump (5) as the drum (2) starts operating.
  • V2 pre-determined speed
  • R2 runtime ratio
  • the foam level decrease is provided by selecting a lower drum (2) operation speed (V2) in the foam decreasing process than the drum (2) operation speed (V1) in the main washing step (V2 ⁇ V1).
  • decreasing of the foam is provided by selecting (R2 ⁇ R1) a lower runtime ratio (R2) than the runtime ratio (R1) of the drum in the main washing step.
  • the spinning step is started again and if the foam level sensor (6) detects that the foam could not be decrease, then the processes of stopping the drum (2) by interrupting the spinning step, mixing the water and the foam by moving the drum (2) at a certain speed (V2) and/or runtime ratio (R2), and draining the foamed water by running the draining pump (5) as the drum (2) starts rotating are repeated one by one at pre-determined time intervals.
  • V2 speed
  • R2 runtime ratio
  • the foam decreasing method in the washing machine (1) wherein the laundry is washed via the main washing, rinsing, and spinning steps comprises the steps below.
  • more enhanced mixing of water and foam is provided by drawing water into the tub (3) during the foam decreasing process wherein the draining pump (5) operates and the drum (2) moves slowly.
  • the foam levels after both the main washing and the spinning after rinsing steps are detected by the foam level sensor (6) and if the foam level is detected to be greater than the maximum value then the foam decreasing process is executed by interrupting the spinning process.
  • the foam overflow which may occur during the spinning is prevented and the spinning performance is enhanced without the need for additional equipments in order to decrease the foaming. Furthermore, detergent stain formation on the laundry is prevented.

Landscapes

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

Claims (3)

  1. Une machine à laver (1) dans laquelle les étapes de lavage telles que le lavage, l'essorage et le rinçage sont exécutées dans des intervalles de temps prédéterminés selon le choix des utilisateurs, la machine à laver (1) comprenant un tambour (2), qui pendant la principale étape de lavage se déplace à une vitesse (V1) pour un rapport temps de fonctionnement (R1), un bac (3) dans lequel le tambour (2) se déplace, un moteur (4) qui active le tambour (2), une pompe de vidange (5) qui évacue l'eau de lavage à l'extérieur de la machine à laver (1) à la fin du processus de lavage et un capteur de niveau de mousse (6) qui détecte le niveau de mousse à l'intérieur du tambour (2), et si le capteur de niveau de mousse (6) détecte que la mousse formée pendant la phase d'essorage dépasse une teneur maximale pré-déterminée, afin de diminuer la mousse, une fois que la mousse est mesurée par le capteur de niveau de mousse (6),
    - le tambour (2) est arrêté en interrompant la phase d'essorage,
    - le tambour (2) se déplace à une vitesse prédéterminée (V2) inférieure à la vitesse de déplacement pendant l'étape de lavage principale (V1),
    - et/ou pour un rapport de temps de fonctionnement prédéterminé (R2) qui est plus court que le rapport de temps de fonctionnement pendant l'étape de lavage principale (R1), mélangeant ainsi l'eau avec la mousse,
    - et la pompe de vidange (5) est actionnée lorsque le tambour (2) commence à se déplacer pour exécuter le processus de diminution de mousse à la vitesse prédéterminée (V2) et/ou pour le rapport de temps de fonctionnement (R2), drainant ainsi l'eau mélangée avec la mousse ; est caractérisé en ce que le capteur de niveau de mousse (6) est conçu pour détecter, pour une seconde fois, le niveau de mousse à l'intérieur du tambour (2) et si le niveau de mousse est détecté pour dépasser encore le niveau maximum de mousse prédéterminé, le processus d'arrêt et de déplacement du tambour et le fonctionnement de la pompe d'évacuation (5) est répété pendant un nombre prédéterminé de fois selon le niveau de mousse détecté lors de la seconde fois.
  2. Un procédé de contrôle dégressif de la mousse pour une machine à laver (1) comme dans la déclaration 1, comprenant les étapes suivantes :
    - la mise en marche de la machine à laver (1),
    - l'exécution de l'étape de lavage principale en introduisant le détergent,
    - le début du processus d'essorage,
    - la détection de la présence ou non de mousse par le capteur de niveau de mousse (6) pendant l'essorage
    - l'arrêt du tambour (2) en interrompant le processus d'essorage si un niveau excessif de mousse est détecté,
    - l'exécution d'un processus de réduction de mousse en déplaçant le tambour (2) à une vitesse prédéterminée (V2) qui est inférieure à la vitesse de déplacement pendant l'étape de lavage principale (V1) et/ou pour un rapport de temps de fonctionnement prédéterminé (R2) qui est inférieur au rapport de temps de fonctionnement pendant l'étape de lavage principale (R1) en mélangeant l'eau avec la mousse et en drainant le mélange eau-mousse au moyen de la pompe de drainage (5) utilisée lorsque le tambour (2) commence à bouger, est caractérisé en ce que le procédé de contrôle comprend en outre les étapes
    - de détection, pour la deuxième fois, du niveau de mousse par le capteur de niveau de mousse (6),
    - si le niveau de mousse détecté la deuxième fois ne dépasse pas un niveau de mousse maximal prédéterminé, poursuite du processus d'essorage et contrôle du niveau de mousse pendant l'essorage,
    - si le niveau de mousse détecté à la deuxième fois dépasse encore le niveau de mousse maximal prédéterminé, répéter le processus de diminution de la mousse pendant un nombre prédéterminé de fois en fonction du niveau de mousse détecté à la deuxième fois, et
    - terminer le processus de lavage en exécutant le rinçage et l'essorage après les étapes de rinçage.
  3. Une méthode de contrôle de la diminution de la mousse selon la déclaration 2, comprenant en outre l'étape consistant à aspirer de l'eau à l'intérieur de la cuve (3) pendant le processus de réduction de la mousse, dans laquelle la pompe de drainage (5) fonctionne lorsque le tambour (2) se déplace à la vitesse prédéterminée (V2), réalisant graduellement un mélange plus homogène d'eau et de mousse.
EP06819933.0A 2005-12-29 2006-12-08 Machine à laver et procédé de commande Active EP1971714B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200505326 2005-12-29
PCT/EP2006/069485 WO2007074037A1 (fr) 2005-12-29 2006-12-08 Machine à laver et procédé de commande

Publications (2)

Publication Number Publication Date
EP1971714A1 EP1971714A1 (fr) 2008-09-24
EP1971714B1 true EP1971714B1 (fr) 2019-05-08

Family

ID=37882229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06819933.0A Active EP1971714B1 (fr) 2005-12-29 2006-12-08 Machine à laver et procédé de commande

Country Status (2)

Country Link
EP (1) EP1971714B1 (fr)
WO (1) WO2007074037A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007033492A1 (de) * 2007-07-18 2009-01-22 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Steuerung der Schaumerzeugung in einer Waschmaschine sowie hierzu geeignete Waschmaschine
DE102007036041A1 (de) * 2007-08-01 2009-02-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Beseitigen von Schaum in einer Trommelwaschmaschine und hierzu geeignete Trommelwaschmaschine
EP2848726B1 (fr) 2013-09-11 2019-03-27 Electrolux Appliances Aktiebolag Procédé de commande d'une machine à laver
EP2849007B1 (fr) * 2013-09-11 2020-11-11 Electrolux Appliances Aktiebolag Procédé pour opérer un lave-linge pendant un cycle de lavage
WO2015082126A1 (fr) 2013-12-04 2015-06-11 Arcelik Anonim Sirketi Machine à laver et son procédé de commande
EP2960363B1 (fr) 2014-06-27 2020-01-22 Electrolux Appliances Aktiebolag Procédé de lavage du linge dans une machine à laver le linge et machine à laver le linge
AU2017203834B2 (en) * 2016-06-08 2019-10-03 Lg Electronics Inc. Laundry treatment apparatus and method of controlling the same
CN111850961B (zh) * 2019-04-17 2023-12-22 博西华电器（江苏）有限公司 洗衣机及其泡沫检测方法、装置
WO2023128971A1 (fr) * 2021-12-29 2023-07-06 Arcelik Anonim Sirketi Machine à laver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638498C2 (de) * 1986-11-11 1994-06-30 Licentia Gmbh Programmgesteuerte Waschmaschine
JPH0696069B2 (ja) * 1989-03-28 1994-11-30 三洋電機株式会社 洗濯機
FR2649422B1 (fr) * 1989-07-04 1992-01-03 Esswein Sa Lave-linge a rincage ameliore et economique en eau
DE4342274A1 (de) * 1993-12-10 1995-06-14 Bosch Siemens Hausgeraete Automatisch gesteuerte Waschmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1971714A1 (fr) 2008-09-24
WO2007074037A1 (fr) 2007-07-05

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