EP2500460A1 - Schaumdetektions- und -eliminierungsverfahren für Waschmaschinen - Google Patents

Schaumdetektions- und -eliminierungsverfahren für Waschmaschinen Download PDF

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Publication number
EP2500460A1
EP2500460A1 EP12155119A EP12155119A EP2500460A1 EP 2500460 A1 EP2500460 A1 EP 2500460A1 EP 12155119 A EP12155119 A EP 12155119A EP 12155119 A EP12155119 A EP 12155119A EP 2500460 A1 EP2500460 A1 EP 2500460A1
Authority
EP
European Patent Office
Prior art keywords
foam
elimination
water
time
level
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.)
Withdrawn
Application number
EP12155119A
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English (en)
French (fr)
Inventor
Serkan Balci
Nizami Barkin Elmas
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret AS
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 Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP2500460A1 publication Critical patent/EP2500460A1/de
Withdrawn legal-status Critical Current

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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

  • Present invention relates to methods for detecting excess foam produced in washing machines and for eliminating such foam.
  • the rotational speed of the drum is decreased as the height of the foam increases; the drum is stopped when the height of the foam exceeds a determined maximum value.
  • the engine is stopped by means of the algorithm which is activated when foam at a maximum level is sensed; and the tub is fed with a small amount of water continuously or discontinuously.
  • the method for detecting and eliminating foam comprises the steps of continuously measuring the water level in the tub during the spinning; checking whether or not the said measurement is above a predetermined threshold level; measuring how long the measured level of water remains above the threshold level; in the case that the measured time is above a certain threshold time, checking how many times the foam elimination process has been performed; in the case that the number of performance of foam elimination process is less than a predetermined number, performing a foam elimination process.
  • the level of water is continuously measured during the spinning; and measured value's remaining above a certain threshold value for a certain time is construed as foam production.
  • the art of the invention checks foam production not only at a single step but during the whole spinning process, which renders the method more reliable.
  • the measured value's remaining above the threshold value for a certain time which is the condition for sensing foam production, prevents activation of foam elimination process at a wrong time, offering advantage with regard to energy and water saving.
  • the aim of the invention is to provide a foam detection and elimination method for washing machines.
  • Another aim of the invention is to provide a foam detection and elimination method which is effective and reliable.
  • a further aim of the invention is to provide a foam elimination process which consumes little water and energy.
  • Figure 1 is the flow chart of the foam detection and elimination method.
  • FIG. 1 shows the flow chart of the foam detection and elimination method of the invention.
  • the level of water in the tub is continuously measured (S304); it is checked whether or not the measured level is above a predetermined threshold level (S306); it is measured how long the measured level of water remains above the said threshold level (S307); in the case that the measured time is above a certain threshold time, it is checked how many times the foam elimination process (S315) has been performed (S308); in the case that the number of performance of foam elimination process is less than a predetermined number, foam elimination process (S315) is performed.
  • the engine (therefore the tub drum) of the machine at the spinning process is stopped (S309), the machine tub is filled with water (S310) for a predetermined time (t1); a predetermined time (t2) elapses while the engine is off (S311); then the water in the tub is evacuated (S312) and the increased number of the performance of the foam elimination process is stored (in the control unit memory) (S313).
  • the first step is deemed to be the beginning (S301) of any washing phase (this phase is a process such as main washing, rinsing etc.).
  • the number of the performance of foam elimination process (S315) is set to "zero" (S302) at the second step.
  • the machine starts spinning (S303) at the third step.
  • the level of water in the tub is continuously measured (S304) at the fourth step.
  • it is checked whether or not the spinning has ended (S305).
  • the eighth step is initiated; if not, the fourth step is resumed.
  • it is checked (S308) how many times the foam elimination process (S315) has been performed; if the number of the performance of said elimination is less than a predetermined number, foam elimination process (S315) is performed; if not, next process in the washing program is initiated (S314).
  • a short threshold time at the seventh step leads to foam elimination process being unnecessarily performed when the foam instantaneously increases without posing a risk of overflowing.
  • a long threshold time may lead to foam elimination process not being activated when overflowing takes place. Therefore, the threshold time is experimentally predetermined and is ideally between two to four seconds.
  • Another crucial point of the present invention is that it checked how many times the foam elimination process (S315) has been performed, and that the maximum number of iteration thereof is predetermined.
  • the maximum number of iteration In the case that the user wishes to wash, with an excessive amount of detergent, such articles as towels which increase foam production; even though foam elimination process is activated, a high level of foam may be observed during the spinning process which follows the same washing program. In such situations, limiting the maximum number of iterating the foam elimination process ensures saving in time, energy and water consumption.
  • Experimental studies show that the maximum number of iteration, which is checked at the eighth step, should be ideally between two to four.
  • Another point in foam elimination process (S315) is that the less than enough amount of water, which is added to the tub, may be unable to eliminate foam. Adding more than enough water may cause an increase in water consumption. For this reason, experimental studies show that the water filling time (t1) at the tenth step (S310) should be ideally between thirty to ninety seconds. In addition, a short waiting time (t2) at the eleventh step (S311) may lead to loss of time while a long waiting time may cause the foam not to be adequately eliminated. Therefore, waiting time (t2) should be ideally between thirty to ninety seconds.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP12155119A 2011-02-15 2012-02-13 Schaumdetektions- und -eliminierungsverfahren für Waschmaschinen Withdrawn EP2500460A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2011/01412A TR201101412A2 (tr) 2011-02-15 2011-02-15 Çamaşır yıkama makineleri için köpük tespit etme ve giderme yöntemi.

Publications (1)

Publication Number Publication Date
EP2500460A1 true EP2500460A1 (de) 2012-09-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12155119A Withdrawn EP2500460A1 (de) 2011-02-15 2012-02-13 Schaumdetektions- und -eliminierungsverfahren für Waschmaschinen

Country Status (2)

Country Link
EP (1) EP2500460A1 (de)
TR (1) TR201101412A2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105492676A (zh) * 2013-08-23 2016-04-13 Bsh家用电器有限公司 衣物处理器具
CN109468798A (zh) * 2017-09-08 2019-03-15 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的消泡方法和衣物处理设备
CN109468797A (zh) * 2017-09-08 2019-03-15 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的消泡方法和衣物处理设备
CN110946540A (zh) * 2018-09-27 2020-04-03 青岛海尔洗衣机有限公司 洗鞋机及其控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1213384A2 (de) * 2000-12-05 2002-06-12 Kabushiki Kaisha Toshiba Automatische Waschmaschine
DE10234472A1 (de) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Beseitigen von Schaum im Laugenbehälter einer Trommelwaschmaschine
EP1688528A1 (de) * 2005-02-02 2006-08-09 Samsung Electronics Co., Ltd. Waschmaschine und Verfahren zum Detektieren von Schaum
DE102006027197A1 (de) * 2006-06-12 2007-12-13 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Beseitigen von Schaum in einer Trommelwaschmaschine und hierzu geeignete Trommelwaschmaschine
WO2009016009A1 (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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1213384A2 (de) * 2000-12-05 2002-06-12 Kabushiki Kaisha Toshiba Automatische Waschmaschine
DE10234472A1 (de) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Beseitigen von Schaum im Laugenbehälter einer Trommelwaschmaschine
EP1688528A1 (de) * 2005-02-02 2006-08-09 Samsung Electronics Co., Ltd. Waschmaschine und Verfahren zum Detektieren von Schaum
DE102006027197A1 (de) * 2006-06-12 2007-12-13 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Beseitigen von Schaum in einer Trommelwaschmaschine und hierzu geeignete Trommelwaschmaschine
WO2009016009A1 (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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105492676A (zh) * 2013-08-23 2016-04-13 Bsh家用电器有限公司 衣物处理器具
CN105492676B (zh) * 2013-08-23 2018-01-05 Bsh家用电器有限公司 衣物处理器具
CN109468798A (zh) * 2017-09-08 2019-03-15 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的消泡方法和衣物处理设备
CN109468797A (zh) * 2017-09-08 2019-03-15 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的消泡方法和衣物处理设备
CN110946540A (zh) * 2018-09-27 2020-04-03 青岛海尔洗衣机有限公司 洗鞋机及其控制方法

Also Published As

Publication number Publication date
TR201101412A2 (tr) 2011-09-21

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