EP1527224B1 - Verfahren zum beseitigen von schaum im laugenbehälter einer trommelwaschmaschine - Google Patents

Verfahren zum beseitigen von schaum im laugenbehälter einer trommelwaschmaschine Download PDF

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Publication number
EP1527224B1
EP1527224B1 EP03735691A EP03735691A EP1527224B1 EP 1527224 B1 EP1527224 B1 EP 1527224B1 EP 03735691 A EP03735691 A EP 03735691A EP 03735691 A EP03735691 A EP 03735691A EP 1527224 B1 EP1527224 B1 EP 1527224B1
Authority
EP
European Patent Office
Prior art keywords
foam
measure
sensor
solution container
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.)
Expired - Lifetime
Application number
EP03735691A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1527224A1 (de
Inventor
Gundula Czyzewski
Ingo Schulze
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
Publication of EP1527224A1 publication Critical patent/EP1527224A1/de
Application granted granted Critical
Publication of EP1527224B1 publication Critical patent/EP1527224B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • D06F34/24—Liquid temperature
    • 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
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • D06F2105/04—Water supply from separate hot and cold water inlets
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed

Definitions

  • the invention relates to a method for removing foam in a tub of an electronically controlled drum washing machine as a result of a program step, which is provided for dewatering the tub, with a arranged at the bottom of the tub lye drain system with a drain pump and a sensor for determining the height of the tub in the tub located liquid whose sensor signal is recorded during operation of the drain pump.
  • EP 0 278 239 A1 A similar procedure is off EP 0 278 239 A1 known. This is to eliminate excessive foaming in the main wash, which can be observed during the heating of wash in the tub, by adding a limited amount of cold water and / or by temporarily switching off the liquor heating eliminated.
  • Another method of detecting foam is for example EP 0 268 155 A2 known.
  • the invention has for its object to provide measures for the elimination of foam in the drainage system, which arises mainly during the discharge of the liquor from the tub and especially during pumping or during the spin operation of the laundry drum. Above all, these measures should not require any additional effort.
  • the course of the sensor signal contains a component which detects the presence of foam in the measurement area.
  • the course of the sensor signal of a level sensor contains a component which indicates the presence of foam. This component is derivable from the gradient of the level flotation values observed during the pumping out of the wash liquor prior to the start of a spin process.
  • the foam treatment measure may consist in accordance with an advantageous embodiment of the invention in the supply of a certain amount of cold and / or warm water.
  • This measure is already known per se, but has a special quality in connection with the abovementioned features of the invention, because the currently running process has the task of eliminating liquid. Therefore, the measure of supplying water in such a process is rather unusual.
  • the foam treatment measure may consist in a further advantageous embodiment of the invention in a change in the speed of the laundry drum. It has been shown that, contrary to previous assumptions, the drum movement is basically the cause of the foam, certain movements of the drum or - according to further advantageous embodiments of the invention - a special speed profile or reversing the laundry drum during the application of a Foam removal measure in a manner matched to the measured variable of the component are quite advantageous in terms of a more efficient foam removal.
  • the temperature of the liquid in the tub can be increased or decreased during the application of the foam removal measure.
  • level sensor can advantageously be used in most washing machines anyway existing pressure transducer.
  • the diagram of Fig. 1 shows a section A, the A uflockimisphase, before the start of the spin program.
  • the laundry drum is driven intermittently at washing speed. This can be done in alternating directions.
  • the speed peaks N 1 to N 17 drawn in thin lines represent the interval-like drive of the laundry drum.
  • the level fluctuations (thick line P) of the liquid in the tub are relatively small.
  • the liquid is pumped out of the tub, so that the thick line P drops very steeply almost steadily to almost zero.
  • the speed of the laundry drum rises after a determination of the steady level waste rate in section B to a preselected spin speed N s .
  • FIG. 2 shows, however, apart from somewhat greater pressure fluctuations already in section A a strong change in the level curve P during the much longer than in Fig. 1 Continuous section B, which is provided for ansich for the acceleration of the drum at spin speed. But this does not happen, because the lower drop of the pressure curve P signals a significant amount of foam and first one of the above and therefore not shown here foam measures must be initiated so that the foam collapses and can not hinder the rapid drum movement.
  • section C therefore, the drum is initially moved again at intervals to check whether the foam measure has seized. After a further standstill of the drum and pumping out of the residual amount, namely, a pressure drop curve should arise as at the end of section B in Fig. 1 , Then - as in section D of the Fig. 1 - The drum to be speeded up to spin speed.
  • the pumping behavior in Fig. 2 differs significantly from that of Fig. 1 (without harmful foam). It starts normally with a small offset (time interval t v ), which lasts for example 2 s and marks the safe starting of the pump. Thereafter, the pressure curve initially falls as in Fig. 1 fast and steady (time period t 1 ). This indicates the pumping of the foam-free liquor. But later (time period t 2 to t 7 ), the pumping speed slows down constantly, because now the amount of foam in the liquor increases very quickly or finally only foam is present, which can not be deducted from the pump.
  • Successive level gradients eg from ⁇ p 1 / ⁇ t 1 to ⁇ p 2 / ⁇ t 2 or ⁇ p 6 / ⁇ t 6 to ⁇ p 7 / ⁇ t 7 , are therefore becoming smaller and smaller.
  • the electronic control of the washing machine (not shown here) can detect the presence of foam. After the automatic detection of harmful foam, the electronic control may trigger at least part of the above removal measures, which need not be explained in detail here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
EP03735691A 2002-07-29 2003-06-27 Verfahren zum beseitigen von schaum im laugenbehälter einer trommelwaschmaschine Expired - Lifetime EP1527224B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10234472 2002-07-29
DE10234472A DE10234472A1 (de) 2002-07-29 2002-07-29 Verfahren zum Beseitigen von Schaum im Laugenbehälter einer Trommelwaschmaschine
PCT/EP2003/006861 WO2004015189A1 (de) 2002-07-29 2003-06-27 Verfahren zum beseitigen von schaum im laugenbehälter einer trommelwaschmaschine

Publications (2)

Publication Number Publication Date
EP1527224A1 EP1527224A1 (de) 2005-05-04
EP1527224B1 true EP1527224B1 (de) 2011-10-12

Family

ID=30128485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03735691A Expired - Lifetime EP1527224B1 (de) 2002-07-29 2003-06-27 Verfahren zum beseitigen von schaum im laugenbehälter einer trommelwaschmaschine

Country Status (8)

Country Link
US (1) US7340792B2 (ko)
EP (1) EP1527224B1 (ko)
KR (1) KR100872232B1 (ko)
CN (2) CN101899770B (ko)
AT (1) ATE528432T1 (ko)
DE (1) DE10234472A1 (ko)
PL (1) PL373324A1 (ko)
WO (1) WO2004015189A1 (ko)

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KR101095555B1 (ko) * 2005-05-04 2011-12-19 삼성전자주식회사 세탁기 및 그 거품제거방법
KR100698163B1 (ko) * 2006-01-17 2007-03-26 엘지전자 주식회사 방송 장르에 따른 신호처리장치를 갖는 이동통신단말기
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
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
DE102007042968B4 (de) * 2007-09-10 2021-05-12 BSH Hausgeräte GmbH Verfahren zur Erkennung von Schaum in einer Trommelwaschmaschine und hierzu geeignete Trommelwaschmaschine
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DE102009027933A1 (de) 2009-07-22 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Erkennen von Schaum für eine programmgesteuerte Wäschebehandlungsmaschine
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DE102009045433B4 (de) * 2009-10-07 2011-09-15 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Behandeln von Schaum, entsprechend programmierte Steuereinrichtung sowie entsprechende Wäschebehandlungsmaschine
DE102010039566A1 (de) 2010-08-20 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Laugenpumpe für wasserführende Haushaltgeräte und wasserführendes Haushaltgerät
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US8844082B2 (en) 2010-12-14 2014-09-30 Whirlpool Corporation Laundry treating appliance with biofilm treating cycle
TR201101412A2 (tr) * 2011-02-15 2011-09-21 Vestel Beyaz Eşya Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇@ Çamaşır yıkama makineleri için köpük tespit etme ve giderme yöntemi.
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EP2849008B1 (en) * 2013-09-11 2019-04-03 Electrolux Appliances Aktiebolag Foam-reducing procedure in a washing machine during a spinning cycle
EP2848726B1 (en) 2013-09-11 2019-03-27 Electrolux Appliances Aktiebolag A method for operating a washing machine
EP2849007B1 (en) 2013-09-11 2020-11-11 Electrolux Appliances Aktiebolag A method for controlling a washing machine during a washing cycle
DE102015205949A1 (de) 2015-04-01 2016-10-06 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit Schaumdetektion durch eine Motorstromauswertung sowie hierzu geeignete Waschmaschine
DE102015205945A1 (de) 2015-04-01 2016-10-06 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit Schaumdetektion durch eine Trommeldrehzahlauswertung sowie hierzu geeignete Waschmaschine
DE102016201450B3 (de) * 2016-02-01 2017-02-09 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Schaumerfassungseinrichtung
EP3235939B1 (en) * 2016-04-21 2021-06-09 Electrolux Appliances Aktiebolag Method for the detection of foam in a laundry washing machine
EP3469373B1 (en) * 2016-06-10 2021-10-13 Unilever Global IP Limited A machine comprising a device for controlling the machine or process by detecting a quality of a fluid formulation to be introduced in the machine and corresponding methods
JP6706735B2 (ja) * 2016-09-27 2020-06-10 パナソニックＩｐマネジメント株式会社 洗濯機
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CN109355855B (zh) * 2018-11-19 2023-04-21 青岛海尔洗涤电器有限公司 一种滚筒洗衣机及控制方法
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Also Published As

Publication number Publication date
US20050197264A1 (en) 2005-09-08
ATE528432T1 (de) 2011-10-15
US7340792B2 (en) 2008-03-11
CN101899770B (zh) 2012-04-25
CN101899770A (zh) 2010-12-01
KR20050029307A (ko) 2005-03-25
PL373324A1 (en) 2005-08-22
CN1671910B (zh) 2011-06-08
WO2004015189A1 (de) 2004-02-19
DE10234472A1 (de) 2004-02-12
KR100872232B1 (ko) 2008-12-05
CN1671910A (zh) 2005-09-21
EP1527224A1 (de) 2005-05-04

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