EP1971714B1 - Waschmaschine und steuerungsverfahren - Google Patents

Waschmaschine und steuerungsverfahren 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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Application number
EP06819933.0A
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English (en)
French (fr)
Other versions
EP1971714A1 (de
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
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Arcelik AS
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Publication date
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Publication of EP1971714A1 publication Critical patent/EP1971714A1/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
    • 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. Eine Waschmaschine (1), in der die Waschschritte, wie das Waschen, Schleudern und Spülen, in Abhängigkeit der Wahl des Benutzers in vorbestimmten Zeitintervallen ausgeführt werden, umfasst eine Trommel (2), welches sich während des Hauptwaschrvorgangs bei einer Geschwindigkeit (V1) für ein Laufzeitverhältnis (R1) bewegt, eine Wanne (3), in der sich die Trommel (2) bewegt, einen Motor (4), der die Trommel antreibt, eine Entleerungspumpe (5), welches das Waschwasser nach dem Abschluss des Waschvorgangs außerhalb der Waschmaschine (1) auslässt und einen Schuamniveausensor (6), der den Schaumpegel innerhalb der Trommel (2) erfasst, wobei der Pegel, der durch den Schaumniveausensor (6) erfasst wird, während dem Schleudervorgang gebildete Schaum einen vorbestimmten maximal Schaumpegel überschreitet erfasst, um es gegeben falls zu verringern, indem
    - die Trommel (2) wird durch das Unterbrechen des Schleudervorgangs angehalten,
    - die Trommel (2) wird während des Hauptwaschschrittes (V1) mit einer vorbestimmten Geschwindigkeit (V2) bewegt, die niedriger ist als die Laufgeschwindigkeit;
    - und / oder ein vorbestimmtes Laufzeitverhältnis (R2), das kürzer ist als das Laufzeitverhältnis während des Hauptwaschschrittes (R1), wodurch das Wasser mit dem Schaum gemischt wird,
    - die Auslasspumpe (5) startet, wenn die Trommel (2) anfängt sich zu bewegen, um den Schaumverringerungsvorgang mit der vorbestimmten Geschwindigkeit (V2) und / oder mit dem Laufzeitverhältnis (R2) auszuführen, wodurch das mit dem Schaum vermischte Wasser ausgelassen wird, gekennzeichnet wird dies dadurch, dass der Schaumniveausensor (6) so angebracht ist, dass er nochmals den Schaumpegel in der Trommel (2) erfasst; und falls festgestellt wird, dass der Schaumpegel den vorgegeben maximalen Schaumpegel überschreitet, wird der Bewegungsprozess der Trommel angehalten und die Auslasspumpe (5) startet für eine vorbestimmte Anzahl von Durchführungen, entsprechend wiederholend dem beim zweiten Mal erfassten Schaumpegel.
  2. Ein Verfahren für die Verminderung der Schaumverringerung für eine Waschmaschine (1), gemäß Anspruch 1, umfasst folgen Schritte:
    - einschalten der Waschmaschine,
    - Ausführen des Hauptwaschschrittes durch die Einnahme des Reinigungsmittels
    - Starten des Schleudervorgangs,
    - Erkennen, ob während des Schleudervorgangs durch das Schaumniveausensor (6) Schaum auftretet oder nicht,
    - Stoppen der Trommel (2) durch das Unterbrechen des Spinnvorgangs, wenn ein übermäßiger Schaum festgestellt wird
    - Ausführen des Schaumverringerungsprozesses durch das Bewegen der Trommel (2) mit einer voreingestellten Geschwindigkeit (V2), die niedriger als die Laufgeschwindigkeit während des Hauptwaschschrittes (V1) ist; und / oder für ein vorbestimmtes Laufzeitverhältnis (R2), welches kürzer als das Laufzeitverhältnis während des Hauptwaschschrittes (R1) ist, wodurch das Wasser mit dem Schaum vermischt wird und die Wasserschaummischung mithilfe der Aulasspumpe (5), welches als Trommel (2) betätigt wird und zu bewegen beginnt; dieses Verfahren ist gekennzeichnet durch,
    - Dass der Schaumpegel ein zweites Mal durch den Schaumpegelsensor (6) erfasst wird,
    - falls der beim zweiten Mal festgestellte Schaumpegel einen vorgegebenen maximalen Schaumpegel nicht überschreitet, wird der Schleudervorgang fortgesetzt und der Schaumpegel wird während des Schleudervorgangs kontrolliert.
    - wenn der zum zweiten Zeitpunkt erfasste Schaumpegel immer noch den vorgegebenen maximalen Schaumpegel überschreitet, wiederholen des Schaumverringerungsprozesses für eine vorbestimmte Anzahl von Durchführungen entsprechend dem zum zweiten Zeitpunkt erfassten Schaumpegel, und
    - das Beenden des Waschvorgangs durch Ausführen des Spülens und des Schleuderns nach den Spülschritten.
  3. Ein Verfahren für die Verringerung der Schaumverringerung nach Anspruch 2, darüber hinaus umfasst es den Schritt des Wasserentzugs in der Wanne (3) während des Schaumverringerungsprozesses, wobei die Auslasspumpe (5) arbeitet, wenn sich die Trommel (2) mit der vorbestimmten Geschwindigkeit (V2) langsam für eine bessere Vermischung von Wasser und Schaum bewegt.
EP06819933.0A 2005-12-29 2006-12-08 Waschmaschine und steuerungsverfahren Active EP1971714B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200505326 2005-12-29
PCT/EP2006/069485 WO2007074037A1 (en) 2005-12-29 2006-12-08 A washing machine and a control method

Publications (2)

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

Family

ID=37882229

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Application Number Title Priority Date Filing Date
EP06819933.0A Active EP1971714B1 (de) 2005-12-29 2006-12-08 Waschmaschine und steuerungsverfahren

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EP (1) EP1971714B1 (de)
WO (1) WO2007074037A1 (de)

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
EP2849007B1 (de) 2013-09-11 2020-11-11 Electrolux Appliances Aktiebolag Verfahren zur Steuerung einer Waschmaschine während eines Waschzyklus
EP2848726B1 (de) 2013-09-11 2019-03-27 Electrolux Appliances Aktiebolag Verfahren zur Steuerung einer Waschmaschine
EP3077585A1 (de) 2013-12-04 2016-10-12 Arçelik Anonim Sirketi Geschirrspüler und steuerungsverfahren dafür
EP2960363B1 (de) 2014-06-27 2020-01-22 Electrolux Appliances Aktiebolag Verfahren zum Waschen von Wäsche in einer Wäschewaschmaschine sowie Wäschewaschmaschine
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 (en) * 2021-12-29 2023-07-06 Arcelik Anonim Sirketi A washing machine

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 *

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

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