EP2010706A1 - 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

Info

Publication number
EP2010706A1
EP2010706A1 EP07729355A EP07729355A EP2010706A1 EP 2010706 A1 EP2010706 A1 EP 2010706A1 EP 07729355 A EP07729355 A EP 07729355A EP 07729355 A EP07729355 A EP 07729355A EP 2010706 A1 EP2010706 A1 EP 2010706A1
Authority
EP
European Patent Office
Prior art keywords
drum
foam
tub
liquid
washing machine
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.)
Granted
Application number
EP07729355A
Other languages
German (de)
English (en)
Other versions
EP2010706B1 (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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38474192&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2010706(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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
Publication of EP2010706B1 publication Critical patent/EP2010706B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

  • 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 carried out 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 heating device.
  • 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 43 34 969 A1 a device for the destruction of detergent foam is described, which has a device for generating hot air, which is introduced through a supply line in the tub wall between the tub and the drum.
  • DE 102 34 472 A1 describes 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 liquid in the tub.
  • the course of the sensor signal (P) recorded during the operation of the leach pump contains a gradient ⁇ p n / ⁇ t n compared to ⁇ p n -i / ⁇ t n -i, which indicates the presence of foam, then one on 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 present invention is thus a method for removing foam in a tub of an electronically controlled drum washing machine with a lye outlet arranged at the bottom of the tub with a drain pump, with a sensor for determining the height of a liquid in the tub, the sensor signal during operation of the A drum is recorded, and a drum, wherein after a main wash and a pumping out of the liquid, the following steps are carried out:
  • 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 switch-on time (hereinafter abbreviated to "ED") is preferably 2 to 30%, particularly 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 the Turning and Stopping the Drum
  • the duty cycle is usually expressed 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 there sitting foam plug 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).
  • hysteresis 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
  • this pressure difference it is preferable for this pressure difference (hysteresis) to be in the range from 10 to 150 Pa, more is preferably from 20 to 100 Pa and most preferably in the range from 30 to 70 Pa.
  • 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 15 400 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 d) subsequent to step d), i. between steps d) and c),
  • step e alternately rotating the drum at a low speed U 5 and stopping the drum and pumping out the fluid during a period U of 30 seconds to 15 minutes, preferably 2 to 10 minutes, most preferably 2.5 to 4 minutes performed (step e)).
  • 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.
  • a regular dishwashing spinning before a rinse cycle
  • 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).
  • 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 a check is made for the presence of foam.
  • foam signal a check is made for the presence of foam.
  • a foam detection is used when pumping the wash liquor and when rinsing.
  • one of the following measures is taken:
  • Foam detection when pumping down when the drum is at a standstill by evaluating the gradients in the pressure curve in the case of a sensor (for example a sensor housing that is installed in the sensor)
  • 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) to be pushed out of the dispensing bowl (washing in 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.
  • An embodiment of the invention is illustrated below with reference to Figures 1 to 3 in more detail.
  • Figure 1 is a schematic representation of the presently relevant parts of a
  • Drum washing machine in which a process for removing foam can be carried out.
  • Figure 2 is a graphical representation of a typical portion of the time course of speed, water inlet, pressure and temperature during a wash in the case of the detection of foam in a conventional method.
  • Figure 3 is a graphical representation of a portion of the time course of speed, water inlet, pressure and temperature during a wash in the case of foam in one embodiment of the method.
  • FIG. 1 is a schematic representation of the presently relevant parts of an embodiment for a drum type washing machine, in which the method for the removal of foam to be described below can be carried out.
  • the drum washing machine of the embodiment shown in Figure 1 comprises 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, which includes 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 Why responses (“Ein Stammschale”) 1 1, from the Inlet water can carry detergent portions into the tub 1.
  • a heating device 13 is located in the tub 1.
  • the valve 9 as well as the heating device 13 can be controlled by a control device ("program control") 12 in accordance with a program schedule which corresponds to a time program and / or may be bound to the achievement of certain measurements of parameters such as liquor level, liquor temperature, laundry drum speed, etc. within the drum washing machine.
  • 15 means a sensor for measuring the pressure in the tub 1.
  • Figure 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 graphic representation of a section of the time profile of speed, water inlet, pressure and temperature in the case of foam in an embodiment of the method presented here. Compared to Figure 2, the time course of speed, water supply, pressure and temperature is 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.
  • mere dilution of the foam is not necessary.
  • the foam was not destabilized but steadily enriched with water. In this way, over several rinses - sometimes until the last rinse - visible foam remained in the drum while the Spülschleurg réelle were stopped. The rinsing effect was very bad for this case.
  • the inventive method avoids this.
  • 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.

Landscapes

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

Abstract

L'invention concerne un procédé pour éliminer la mousse dans un récipient de lessive (1) d'une machine à laver à tambour à commande électronique, comprenant un système de sortie de la lessive disposé au fond du récipient de lessive (1), avec une pompe de lessive, et comprenant un capteur (15) pour déterminer la hauteur du liquide se trouvant dans le récipient de lessive (1), dont le signal de capteur est enregistré pendant le fonctionnement de la pompe de lessive. La machine à laver comprend aussi un tambour (2), et après une opération de lavage principale et un pompage pour l'évacuation du liquide, les étapes suivantes sont mises en œuvre : a) rotation en alternance du tambour à faible vitesse U1 et arrêt du tambour, ainsi que pompage du liquide pendant un intervalle de temps t1 de 30 s à 15 minutes, b) introduction d'eau dans une quantité qui suffit pour couvrir toutes les voies d'eau, et rinçage pendant un court intervalle de temps t2, une régulation du niveau s'effectuant par le biais d'une très petite hystérésis, et c) pompage du liquide pendant la rotation du tambour à faible vitesse U2. L'invention concerne aussi une machine à laver à tambour à cet effet.
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 true EP2010706A1 (fr) 2009-01-07
EP2010706B1 EP2010706B1 (fr) 2013-09-11

Family

ID=38474192

Family Applications (1)

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016012212A1 (fr) * 2014-07-23 2016-01-28 BSH Hausgeräte GmbH Dispositif de traitement de linge équipé d'un moyen de production de lessive

Families Citing this family (14)

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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
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
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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KR101034198B1 (ko) * 2005-02-02 2011-05-12 삼성전자주식회사 세탁기 및 그 거품감지방법
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016012212A1 (fr) * 2014-07-23 2016-01-28 BSH Hausgeräte GmbH Dispositif de traitement de linge équipé d'un moyen de production de lessive
CN106536809A (zh) * 2014-07-23 2017-03-22 Bsh家用电器有限公司 包括液体生成装置的衣物处理器具
RU2662689C1 (ru) * 2014-07-23 2018-07-26 Бсх Хаусгерете Гмбх Прибор для ухода за бельем с устройством выработки щелочного раствора
CN106536809B (zh) * 2014-07-23 2019-01-01 Bsh家用电器有限公司 包括液体生成装置的衣物处理器具

Also Published As

Publication number Publication date
CN101466884A (zh) 2009-06-24
DE102006027197A1 (de) 2007-12-13
RU2008148162A (ru) 2010-07-20
US8152932B2 (en) 2012-04-10
CN101466884B (zh) 2011-05-25
US20100154829A1 (en) 2010-06-24
EP2010706B1 (fr) 2013-09-11
WO2007144248A1 (fr) 2007-12-21
PL2010706T3 (pl) 2014-02-28
RU2439227C2 (ru) 2012-01-10

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