EP2010706B1 - Procédé pour éliminer la mousse dans une machine à laver à tambour et machine à laver à tambour appropriée à cet effet - Google Patents

Procédé pour éliminer la mousse dans une machine à laver à tambour et machine à laver à tambour appropriée à cet effet Download PDF

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Publication number
EP2010706B1
EP2010706B1 EP07729355.3A EP07729355A EP2010706B1 EP 2010706 B1 EP2010706 B1 EP 2010706B1 EP 07729355 A EP07729355 A EP 07729355A EP 2010706 B1 EP2010706 B1 EP 2010706B1
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EP
European Patent Office
Prior art keywords
drum
foam
washing machine
solution
liquid
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.)
Active
Application number
EP07729355.3A
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German (de)
English (en)
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EP2010706A1 (fr
Inventor
Meike Hempel
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
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BSH Bosch und Siemens Hausgeraete GmbH
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL07729355T priority Critical patent/PL2010706T3/pl
Publication of EP2010706A1 publication Critical patent/EP2010706A1/fr
Application granted granted Critical
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    • 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

  • the invention relates to a method for removing foam in a drum washing machine and a drum washing machine suitable for this purpose.
  • the invention relates to a method for removing foam in a tub of an electronically controlled drum washing machine, in which certain steps are performed after a main wash and a pumping out of the liquid, and a drum washing machine suitable for this purpose.
  • the foam is destroyed by switching on a heater.
  • the drum In order to destroy the foam in the wider vicinity of the heater, the drum is rotated slowly so that more foam passes to the heater and is destroyed there by supplying heat.
  • DE 102 34 472 A1 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 dehydrating the tub, with a Laugenablaufsystem arranged at the bottom of the tub with a drain pump and with a sensor for determining the height of the liquid in the tub ,
  • the course of the sensor signal (P) is recorded during the operation of the drain pump, contains a gradient Ap n / .DELTA.t n compared to Ap n-1 / .DELTA.t n-1, indicating the presence of foam, whereupon one of the Gradient-matched foam treatment measure is initiated.
  • the object of the invention was therefore to provide a method by means of which the foam produced in a washing machine can be combated more effectively than with conventional methods.
  • the invention also relates to a drum washing machine with a program control for controlling the program flow, a rotatably mounted in a tub drum, a bottom of the tub arranged Laugenablaufsystem with a drain pump, a drive motor for the drum, a heater, a sensor for determining the height of in the tub liquid and switching means for rotating and stopping the drum, wherein the switching means in the case of detection of foam can perform the method described above.
  • the speed U 1 is preferably from 20 to 60, more preferably between 30 and 50 revolutions per minute.
  • the duty cycle (hereinafter abbreviated to "ED") is preferably 2 to 30%, more preferably 5 to 15%.
  • the duty cycle ED is a measure of the time proportion of the rotation of the drum relative to the total time for turning and, the standstill of the drum.
  • the duty cycle is usually given in%, where 50% means that the drum moves halfway over a certain period of time and stops halfway, for example, moving 30 seconds and resting for 30 seconds.
  • step a) the drum is preferably rotated at a frequency of 1 to 5, more preferably 2 to 4 revolutions per minute.
  • the pump is shut down at drum standstill.
  • the rotation of the drum is preferably carried out in both directions, that is, reversing.
  • step b) a quantity of water is introduced which is sufficient to cover all waterways, this means that the water intake takes place to a safe, high level above all waterways.
  • waterways are meant the ways in which water enters the tub. This can be done exclusively via a dispenser, whereby detergent is also flushed into the tub, and / or directly into the tub.
  • the remaining foam is rinsed in this way with plenty of water from the waterways and diluted.
  • this water is used at a temperature which is below the temperature of the wash liquor in the tub during the main wash, as this causes the wash liquor is cooled.
  • the waterways are flushed free, which prevents that sitting there Schaumpfropfen in a subsequent rinse in the dispenser - and possibly from the washing machine - are pressed.
  • the cooling of the wash liquor also prevents the stabilization of the foam.
  • step b the terms "water entrainment” and “purge” are closely inseparable, as will be understood from the description of step b).
  • a level control takes place via a very small hysteresis.
  • "Hysteresis” within the meaning of the invention is the pressure difference between the pressure at the upper switching point for the water supply and the pressure at the lower switching point for the water supply. In the present invention, it is preferable that this pressure difference (hysteresis) is in the range of 10 to 150 Pa, more preferably 20 to 100 Pa, and most preferably in the range of 30 to 70 Pa.
  • hysteresis is in the range of 10 to 150 Pa, more preferably 20 to 100 Pa, and most preferably in the range of 30 to 70 Pa.
  • an effective foam dilution results without re-impacting (foaming). It has been found that the solution of the foam in the water causes a decrease in the pressure; The small hysteresis supports frequent water drawing, so that there is always the largest possible amount of water for diluting the detergent concentration in the washing machine.
  • the period t 2 is preferably from 1 to 5 minutes, more preferably from 1 to 3 minutes.
  • the pumping out of the liquid in step c) takes place while the drum is being moved at a low rotational speed U 2 .
  • the values of the rotational speed U 2 are preferably in the preferred range specified for the rotational speed U 1 , wherein the rotational speeds U 1 and U 2 can be selected independently of one another.
  • step c) prevents the foam from laying like a blanket on the laundry. Instead, the foam is circulated and transported away better.
  • step d) with a speed U 3 of the drum below 500 revolutions / minute, preferably at a speed below 400 revolutions / minute, most preferably at a speed in the range of 100 to 200 Revolutions per minute over a short period t 3 is thrown (step d)).
  • the time period t 3 is preferably from 30 seconds to 5 minutes, more preferably from 1 to 2 minutes.
  • step e) subsequent to step d), ie between steps d) and c), (e) alternately rotating the drum at a low speed U 5 and stopping the drum, and pumping out the fluid for a period t 4 of 30 seconds to 15 minutes, preferably 2 to 10 minutes, most preferably 2.5 to 4 Minutes (step e)).
  • the values of the rotational speed U 5 are preferably in the preferred range specified for the rotational speed U 1 , wherein the rotational speeds U 1 and U 5 can be selected independently of one another.
  • step c a regular dishwashing (spinning before a rinse cycle) is carried out, in which foam can be detected again.
  • centrifuging is preferably stopped when foam is detected, and the process according to the invention is carried out with steps a) to c) and optionally steps d) and e).
  • the process according to the invention results in efficient "dripping" of the foam.
  • the water runs down the walls of the membranes of the bubbles and runs off through the holes in the drum. It is believed that the foam becomes unstable due to the ever-thinner bubble walls. Due to the movement of the drum thus the foam is smashed. The burst bubbles then release further liquid which can flow off in the rest phase following the movement of the drum.
  • step a) and optionally in step e) an alternating rotation and standstill of the drum takes place.
  • the pumping out of the liquid is preferably carried out at intervals, whereby the water can accumulate between the pumping steps.
  • the pump can be turned on. Preferably, however, the pump is switched off between the pumping steps.
  • foam detection an examination is made for the presence of foam.
  • foam signal a foam signal
  • the foam detection can also be carried out via a conductivity measurement with two electrodes in the lower region of the tub.
  • a foam detection during spin by means of an evaluation of the target / actual speed difference is possible.
  • the foam detection by evaluation of the target / actual speed difference use is made of the fact that the foam can brake a rotating drum, whereby there is a difference between the target and the actual speed.
  • the association between a specific foam concentration and the target / actual difference is generally stored in a data memory of the drum washing machine.
  • foam control measures can be taken in the process according to the invention.
  • a pressure level can be released that does not allow foam (a foam mat) can be pushed out of the Ein effetschale (washing the detergent).
  • Releasing a pressure level in this case means that the sensor is given a certain pressure value until it is filled water is filled into the tub. This method is preferred in the presence of foam. If no foam is present, a certain predetermined amount of water is generally filled.
  • Another measure to combat foam is that the duty cycle ED is reduced.
  • a substance for inhibiting the foam can be added automatically during the performance of the method according to the invention. This is particularly useful if facilities for automatic dosing of detergents in a drum washing machine are present anyway.
  • FIG. 1 Fig. 12 is a schematic representation of the presently relevant parts of an embodiment for a drum type washing machine in which the foam removing method to be described below can be performed.
  • the drum washing machine of in FIG. 1 embodiment shown has a tub 1, in which a drum 2 is rotatably mounted and driven by the drive motor 14.
  • the rotation axis 3 of the drum 2 from the horizontal by a small angle (eg 13 °) directed forwardly upwards, so that the user of the drum washing machine easier access and insight into the interior of the drum washing machine Drum 2 has.
  • the drum washing machine also has a liquor inlet system comprising a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which may optionally also be guided via a Waschstoffein Kunststoff Anlagen Maschinene ("Ein Hamptonschale") 11, from which the feed water Can carry detergent portions in the tub 1.
  • a heater 13 in the tub 1, a heater 13.
  • the valve 9 as well as the heater 13 can be controlled by a control device (“program control”) 12 in response to a program flowchart, the to a time program and / or to the achievement of certain measurements of Parameters such as liquor level, liquor temperature, speed of the laundry drum, etc. may be bound within the drum washing machine.
  • 15 means a sensor for measuring the pressure in the tub 1.
  • FIG. 2 is a graphical representation of a typical section of the time course of speed, water inlet, pressure and temperature in the case of the detection of foam in a previously known method.
  • FIG. 3 is a graphical representation of a section of the time course of speed, water inlet, pressure and temperature in the case of foam in one embodiment of the method presented here. Compared to FIG. 2 is the time course of speed, water supply, pressure and temperature significantly different.
  • the invention has numerous advantages.
  • the method according to the invention is characterized by a high degree of effectiveness in the case of foam, which is produced during washing and can lead to foaming in the first rinsing cycle. This is thrown only when the foam is sufficiently reduced and the risk of foam leakage from the dispenser is no longer.
  • the bubbles are already destroyed before the addition of water.
  • no new foam is opened, but instead reduces the detergent concentration. Flushing may be carried out, thereby effectively removing the detergent-containing caustic and improving the scavenging effect.

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

Claims (6)

  1. Procédé pour éliminer la mousse dans un réservoir de liquide de lavage (1) d'un lave-linge à tambour à commande électronique comprenant un système d'évacuation de liquide de lavage, disposé au fond du réservoir de liquide de lavage (1), muni d'une pompe de liquide de lavage, comprenant un capteur (15) destiné à déterminer une hauteur du liquide se trouvant dans le réservoir de liquide de lavage (1), dont le signal de capteur est enregistré pendant le fonctionnement de la pompe de liquide de lavage, et comprenant un tambour (2), caractérisé en ce qu'après un cycle principal de lavage et une vidange du liquide, les étapes suivantes sont réalisées :
    a) rotation alternante du tambour avec une basse vitesse de rotation U1 et immobilisation du tambour ainsi que vidange du liquide pendant une période de temps t1 de 30 secondes à 15 minutes,
    b) admission d'eau dans une quantité suffisante pour recouvrir toutes les voies d'eau, et lavage pendant une brève période de temps t2, un réglage du niveau étant réalisé sur une très petite hystérèse,
    c) vidange du liquide pendant que le tambour est déplacé avec une basse vitesse de rotation U2.
  2. Procédé selon la revendication 1, caractérisé en ce qu'a lieu, entre l'étape a) et l'étape b),
    d) un essorage pendant une brève période de temps t3 avec une vitesse de rotation U3 du tambour inférieure à 500 tours/minute.
  3. Procédé selon la revendication 2, caractérisé en ce que suite à l'étape d)
    e) une rotation du tambour avec une basse vitesse de rotation U5 et une immobilisation du tambour ainsi qu'une vidange du liquide sont réalisées en alternance pendant une période de temps t4 de 30 secondes à 15 minutes.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que suite à l'étape c) un essorage de rinçage régulier est réalisé, pendant lequel la mousse peut être de nouveau identifiée.
  5. Procédé selon la revendication 4, caractérisé en ce que lors de l'identification de la mousse, l'essorage est interrompu et le procédé est de nouveau exécuté selon l'une quelconque des revendications 1 à 3.
  6. Lave-linge à tambour comprenant une commande à programme (12) pour la commande du déroulement des programmes, comprenant un tambour (2) logé de manière rotative dans un réservoir de liquide de lavage (1), un système d'évacuation de liquide de lavage, disposé au fond du réservoir de liquide de lavage (1), muni d'une pompe de liquide de lavage, un moteur d'entraînement (14) pour le tambour, un dispositif de chauffage (13), un capteur (15) destiné à déterminer la hauteur du liquide se trouvant dans le réservoir de liquide de lavage (1) et des moyens de commutation (9, 12, 14) destinés à faire tourner et immobiliser le tambour, caractérisé en ce que les moyens de commutation (9, 12, 14), en cas d'une détection de mousse, peuvent exécuter le procédé selon l'une quelconque des revendications 1 à 5.
EP07729355.3A 2006-06-12 2007-05-22 Procédé pour éliminer la mousse dans une machine à laver à tambour et machine à laver à tambour appropriée à cet effet Active EP2010706B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07729355T PL2010706T3 (pl) 2006-06-12 2007-05-22 Sposób usuwania piany w pralce bębnowej i odpowiednia do tego pralka bębnowa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006027197A DE102006027197A1 (de) 2006-06-12 2006-06-12 Verfahren zum Beseitigen von Schaum in einer Trommelwaschmaschine und hierzu geeignete Trommelwaschmaschine
PCT/EP2007/054913 WO2007144248A1 (fr) 2006-06-12 2007-05-22 Procédé pour éliminer la mousse dans une machine à laver à tambour et machine à laver à tambour appropriée à cet effet

Publications (2)

Publication Number Publication Date
EP2010706A1 EP2010706A1 (fr) 2009-01-07
EP2010706B1 true EP2010706B1 (fr) 2013-09-11

Family

ID=38474192

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Application Number Title Priority Date Filing Date
EP07729355.3A Active EP2010706B1 (fr) 2006-06-12 2007-05-22 Procédé pour éliminer la mousse dans une machine à laver à tambour et machine à laver à tambour appropriée à cet effet

Country Status (7)

Country Link
US (1) US8152932B2 (fr)
EP (1) EP2010706B1 (fr)
CN (1) CN101466884B (fr)
DE (1) DE102006027197A1 (fr)
PL (1) PL2010706T3 (fr)
RU (1) RU2439227C2 (fr)
WO (1) WO2007144248A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102008028030A1 (de) 2008-06-12 2009-12-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Einrichtung zum Bestimmen von Schaum in einer Waschmaschine
DE102009002622B4 (de) * 2009-04-24 2016-01-14 BSH Hausgeräte GmbH Verfahren zur Durchführung einer Spülphase in einer Trommelwaschmaschine
DE102009027933A1 (de) * 2009-07-22 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Erkennen von Schaum für eine programmgesteuerte Wäschebehandlungsmaschine
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
KR20120004208A (ko) * 2010-07-06 2012-01-12 삼성전자주식회사 세제공급장치 및 이를 가지는 세탁기
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.
DE102013216743A1 (de) * 2013-08-23 2015-02-26 BSH Bosch und Siemens Hausgeräte GmbH Wäschepflegegerät
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
DE102014214348B4 (de) * 2014-07-23 2016-09-15 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Laugenerzeugungseinrichtung
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
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
CN105088646B (zh) * 2015-05-29 2018-03-16 无锡小天鹅股份有限公司 滚筒洗衣机的控制方法、控制装置及滚筒洗衣机
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
CN114108232B (zh) * 2021-12-02 2024-03-12 Tcl家用电器（合肥）有限公司 泡沫量预测方法、装置、存储介质以及洗涤设备

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DE3703917A1 (de) * 1987-02-09 1988-08-18 Bosch Siemens Hausgeraete Verfahren zum automatischen waschen von waesche
DE4104151A1 (de) * 1991-02-12 1992-08-13 Miele & Cie Waeschebehandlungsmaschine
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US5890247A (en) * 1997-12-22 1999-04-06 Maytag Corporation Automatic washing machine incorporating a suds detection and control system
DE19821148A1 (de) * 1998-05-12 1999-11-18 Aeg Hausgeraete Gmbh Programmgesteuertes wasserführendes elektrisches Haushaltsgerät
JP3643772B2 (ja) * 2000-12-05 2005-04-27 株式会社東芝 ドラム式洗濯機
DE10234472A1 (de) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Beseitigen von Schaum im Laugenbehälter einer Trommelwaschmaschine
KR101034198B1 (ko) * 2005-02-02 2011-05-12 삼성전자주식회사 세탁기 및 그 거품감지방법
KR101095555B1 (ko) * 2005-05-04 2011-12-19 삼성전자주식회사 세탁기 및 그 거품제거방법

Also Published As

Publication number Publication date
US20100154829A1 (en) 2010-06-24
RU2008148162A (ru) 2010-07-20
CN101466884A (zh) 2009-06-24
DE102006027197A1 (de) 2007-12-13
CN101466884B (zh) 2011-05-25
PL2010706T3 (pl) 2014-02-28
US8152932B2 (en) 2012-04-10
RU2439227C2 (ru) 2012-01-10
WO2007144248A1 (fr) 2007-12-21
EP2010706A1 (fr) 2009-01-07

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