EP2133455A1 - Procédé et dispositif de détermination de mousse dans un lave-linge - Google Patents

Procédé et dispositif de détermination de mousse dans un lave-linge Download PDF

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Publication number
EP2133455A1
EP2133455A1 EP09100323A EP09100323A EP2133455A1 EP 2133455 A1 EP2133455 A1 EP 2133455A1 EP 09100323 A EP09100323 A EP 09100323A EP 09100323 A EP09100323 A EP 09100323A EP 2133455 A1 EP2133455 A1 EP 2133455A1
Authority
EP
European Patent Office
Prior art keywords
electrodes
washing machine
tub
foam
washing
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.)
Ceased
Application number
EP09100323A
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German (de)
English (en)
Inventor
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 EP2133455A1 publication Critical patent/EP2133455A1/fr
Ceased 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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
    • 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
    • D06F2105/42—Detergent or additive supply
    • 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
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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
    • D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing

Definitions

  • the invention relates to a method for determining a foam which forms within the washing liquid of a washing machine forming a washing tub using electrodes and to a washing machine having means for carrying out the method.
  • DE 101 35 191 A1 also acknowledges a number of prior art, including turbidity sensors as recognition devices for foam ( DE 198 48 248 A1 ) or even on reflections of the lye surface reactive optical sensors ( DE 43 42 272 A1 ) are located. Despite many of the described disadvantages of such systems also uses in DE 101 35 191 A1 described method, a turbidity sensor to expand the possibilities of process monitoring in a washing machine with its use.
  • the invention has for its object, especially during a wetting or at the beginning of a wash cycle of a laundry treatment process to recognize the formation of foam in time that measures to prevent - not only for elimination - can be made of harmful foaming before the washing mechanics over long stretches of the treatment process is already impaired.
  • this object is achieved by a method described above, in which according to the characterizing part of claim 1 to the electrodes, a measuring voltage is applied, the electric field between the electrodes is determined and the size of the electric field is assigned a measure of the amount of foam.
  • a washing machine in which such a method can be carried out, is advantageously characterized in that the electrodes are arranged in a region of the tub of the washing machine, which is known by an intense presence of any resulting foam bubbles.
  • Such areas are preferably located in the vicinity of the attached to the bottom of the tub heaters at a low height above them, so that the area of the tub is located according to a further advantageous embodiment, slightly above the lowest point of the tub.
  • foam bubbles which are formed directly on the hot heating rods can preferably pass between the electrodes of the measuring arrangement. There, they change the electric field so significantly that this change is available for reliable measurement evaluation.
  • the electrodes preferably have such a small mutual distance that only a few foam bubbles (eg only one or two) fit into the spacer space. Then, the change in the electric field between the electrodes compared to the state with completely bubble-free filling of the distance space can amount to a whole or even more than an order of magnitude of the measured variable.
  • the washing machine according to the invention can be equipped at the lower end of the distance space of the electrodes with a drogue. Then the guarantee to catch the resulting bubbles at a very early stage is given most likely.
  • FIG. 1 The diagram shown on the abscissa shows the time t of the laundry treatment process and on the ordinate axis the values for the drum rotation number (diagram line N), the resulting pressure of the liquor P o in the tub and the conductance G o of the liquor, each measured on a mounted in the tub Measuring arrangement completely without foaming.
  • the laundry treatment process is divided into essentially four sections: wetting B, washing W, rinsing R and spinning S.
  • wetting section B fresh water and detergent are supplied and the laundry drum is driven at a low speed of, for example, 25 rpm.
  • the pressure P in the tub first increases according to the filled amount of water and then reduces (here simplified) within several stages to a constant pressure P o , which is also observed in the washing W section.
  • the conductance G of the liquor initially increased rapidly, because almost all the supplied amount of detergent collects in the vicinity of the measuring assembly, while distributing in the course of wetting section B in the entire liquor. Even within the wetting section B, however, the conductance G increases again, because initially not the entire amount of detergent was dissolved, which now happens in section B.
  • the conductance G also continues to rise during the washing section W, because the dissolution process still continues until the conductance has finally reached approximately a value G o , after the temperature of the liquor (not shown here) has reached the maximum value and towards the end of the Section W falls slightly again.
  • the development of the conductance G o follows the temperature development approximately.
  • the laundry drum is driven at a speed of about 55 rpm. Usually drive breaks and reversals of the laundry drum are not considered here.
  • the representation in Fig. 1 is an idealized representation in the event that no foam forms.
  • a rinsing section R follows, in which first the liquor is pumped out and the laundry is thrown over (increase in the drum speed!). For subsequent rinsing the laundry water is added again, then pumped out again, etc. until the rinsing section is ended.
  • the laundry drum accelerates to high speeds of more than 400 rpm, with considerable amounts of lye initially bound in the laundry being thrown off and being pumped out of the tub. Consequently, the graph lines for the conductance G, the lye pressure P and finally also the speed N decrease towards zero.
  • FIG. 2 The diagram shown is a corresponding Fig. 1 ongoing laundry treatment process shown in which a normal foam situation exists. That is, the laundry detergent used has a common tendency to foam when a laundry of average mesh and fabric type is used and washed in a standard 60 ° program.
  • P S and conductance G S For comparison with the parameters influenced by foaming pressure P S and conductance G S are in the diagram of the Fig. 2 also the comparable diagram lines G o and P o registered without foam.
  • the washing machine shown therein houses in its housing 1 a tub 2 with an internal laundry drum 3.
  • the bottom drain 4 of the tub 2 is also regularly the place where the Laugentik P is measured in the tub 2 (not shown here). He is connected via a drain pump 5 with the drain line 6, to carry over this the spent liquor from the washing machine.
  • a measuring arrangement 14 is mounted, which accommodates within a channel-like housing 15 two electrodes 16, whose spacing can be flooded by the liquor 17 from bottom to top.
  • the position of the disproportionately large measuring arrangement 14 shown here is the better recognizability because of left next to the laundry drum 3 indicated. However, since the measuring assembly 14 can actually be made substantially smaller, is their attachment in the tub 2 further in the vicinity of the radiator 20 possible and recommended.
  • the electrodes 16 are connected via lines 18 to an evaluation device, not shown, where the measured variable of the electric field formed between the electrodes 16 can be converted into a process measure.
  • the housing 15 has a drogue 21 at the lower end of its channel.
  • FIG. 3 illustrated embodiment is not a restriction of the invention.
  • the representation of the measuring arrangement 14 is to be evaluated only as a principle.
  • the method according to the invention also covers the framework for the means for carrying out the method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP09100323A 2008-06-12 2009-06-08 Procédé et dispositif de détermination de mousse dans un lave-linge Ceased EP2133455A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008028030A DE102008028030A1 (de) 2008-06-12 2008-06-12 Verfahren und Einrichtung zum Bestimmen von Schaum in einer Waschmaschine

Publications (1)

Publication Number Publication Date
EP2133455A1 true EP2133455A1 (fr) 2009-12-16

Family

ID=41011958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09100323A Ceased EP2133455A1 (fr) 2008-06-12 2009-06-08 Procédé et dispositif de détermination de mousse dans un lave-linge

Country Status (3)

Country Link
EP (1) EP2133455A1 (fr)
CN (1) CN101608391B (fr)
DE (1) DE102008028030A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101994238A (zh) * 2009-08-25 2011-03-30 松下电器产业株式会社 洗衣机
WO2012089471A1 (fr) * 2010-12-29 2012-07-05 Arcelik Anonim Sirketi Machine à laver comportant un capteur de conductivité et de température
CN114098582A (zh) * 2021-11-18 2022-03-01 瀚乐电子机械（南京）有限公司 一种用于检测家用电器内的泡沫量的系统和方法
WO2023128971A1 (fr) * 2021-12-29 2023-07-06 Arcelik Anonim Sirketi Machine à laver

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010040297A1 (de) 2010-09-06 2012-03-08 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zur Steuerung eines Hausgerätes bei intelligenter Stromzählung
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
CN104873154B (zh) * 2015-05-19 2021-07-06 九阳股份有限公司 一种免安装洗碗机
DE102016201450B3 (de) * 2016-02-01 2017-02-09 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Schaumerfassungseinrichtung
EP3318670A1 (fr) 2016-11-08 2018-05-09 BSH Hausgeräte GmbH Procédé de fonctionnement d'une machine à laver avec détection de mousse et lave-linge approprié pour ce procédé
CN109554882B (zh) * 2018-12-04 2020-11-24 义乌市志群拉链有限公司 自动化双桶洗衣机

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703917A1 (de) 1987-02-09 1988-08-18 Bosch Siemens Hausgeraete Verfahren zum automatischen waschen von waesche
EP0452748A1 (fr) * 1990-04-05 1991-10-23 Shin-Etsu Chemical Co., Ltd. Procédé de polymérisation d'un monomère
DE4342274A1 (de) 1993-12-10 1995-06-14 Bosch Siemens Hausgeraete Automatisch gesteuerte Waschmaschine
DE4342272A1 (de) 1993-12-10 1995-06-14 Bosch Siemens Hausgeraete Verfahren und Meßanordnung zum Bestimmen des Niveaus, der Trübung und eines eventuellen Schaumanteils der Lauge in einer automatisch steuerbaren Wasch- oder Geschirrspülmaschine
EP0668387A1 (fr) * 1994-02-22 1995-08-23 Whirlpool Corporation Machine à laver à axe vertical
DE19848248A1 (de) 1998-10-20 2000-05-18 Dyckerhoff Ag Dünnwandiges Bauteil aus hydraulisch erhärtetem Zementsteinmaterial sowie Verfahren zu seiner Herstellung
DE10135191A1 (de) 2001-07-19 2003-01-30 Bsh Bosch Siemens Hausgeraete Verfahren zum Betreiben eines wasserführenden Haushaltgerätes und Haushaltgerät hierzu
JP2003047584A (ja) * 2001-08-07 2003-02-18 Matsushita Electric Ind Co Ltd 食器洗い機
EP1441056A1 (fr) * 2003-01-22 2004-07-28 Whirlpool Corporation Machine à laver
EP1655407A1 (fr) * 2004-11-04 2006-05-10 Lg Electronics Inc. Machine à laver, dispositif et procédé pour régler celle-ci
EP1731656A2 (fr) * 2005-06-08 2006-12-13 Lg Electronics Inc. Detecteur de mousse d'une machine à laver à tambour
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
EP1918441A1 (fr) * 2006-11-01 2008-05-07 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande de lavage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2597759B2 (ja) * 1991-02-01 1997-04-09 シャープ株式会社 ドラム式洗濯機
DE4104151A1 (de) * 1991-02-12 1992-08-13 Miele & Cie Waeschebehandlungsmaschine
JP4661522B2 (ja) * 2005-10-25 2011-03-30 パナソニック株式会社 ドラム式洗濯機

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703917A1 (de) 1987-02-09 1988-08-18 Bosch Siemens Hausgeraete Verfahren zum automatischen waschen von waesche
EP0452748A1 (fr) * 1990-04-05 1991-10-23 Shin-Etsu Chemical Co., Ltd. Procédé de polymérisation d'un monomère
DE4342274A1 (de) 1993-12-10 1995-06-14 Bosch Siemens Hausgeraete Automatisch gesteuerte Waschmaschine
DE4342272A1 (de) 1993-12-10 1995-06-14 Bosch Siemens Hausgeraete Verfahren und Meßanordnung zum Bestimmen des Niveaus, der Trübung und eines eventuellen Schaumanteils der Lauge in einer automatisch steuerbaren Wasch- oder Geschirrspülmaschine
EP0668387A1 (fr) * 1994-02-22 1995-08-23 Whirlpool Corporation Machine à laver à axe vertical
DE19848248A1 (de) 1998-10-20 2000-05-18 Dyckerhoff Ag Dünnwandiges Bauteil aus hydraulisch erhärtetem Zementsteinmaterial sowie Verfahren zu seiner Herstellung
DE10135191A1 (de) 2001-07-19 2003-01-30 Bsh Bosch Siemens Hausgeraete Verfahren zum Betreiben eines wasserführenden Haushaltgerätes und Haushaltgerät hierzu
JP2003047584A (ja) * 2001-08-07 2003-02-18 Matsushita Electric Ind Co Ltd 食器洗い機
EP1441056A1 (fr) * 2003-01-22 2004-07-28 Whirlpool Corporation Machine à laver
EP1655407A1 (fr) * 2004-11-04 2006-05-10 Lg Electronics Inc. Machine à laver, dispositif et procédé pour régler celle-ci
EP1731656A2 (fr) * 2005-06-08 2006-12-13 Lg Electronics Inc. Detecteur de mousse d'une machine à laver à tambour
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
EP1918441A1 (fr) * 2006-11-01 2008-05-07 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande de lavage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101994238A (zh) * 2009-08-25 2011-03-30 松下电器产业株式会社 洗衣机
CN101994238B (zh) * 2009-08-25 2015-01-07 松下电器产业株式会社 洗衣机
WO2012089471A1 (fr) * 2010-12-29 2012-07-05 Arcelik Anonim Sirketi Machine à laver comportant un capteur de conductivité et de température
CN114098582A (zh) * 2021-11-18 2022-03-01 瀚乐电子机械（南京）有限公司 一种用于检测家用电器内的泡沫量的系统和方法
WO2023128971A1 (fr) * 2021-12-29 2023-07-06 Arcelik Anonim Sirketi Machine à laver

Also Published As

Publication number Publication date
DE102008028030A1 (de) 2009-12-24
CN101608391B (zh) 2012-07-25
CN101608391A (zh) 2009-12-23

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