EP2519674B1 - Waschmaschine mit enthärtungseinrichtung - Google Patents

Waschmaschine mit enthärtungseinrichtung Download PDF

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Publication number
EP2519674B1
EP2519674B1 EP10796433.0A EP10796433A EP2519674B1 EP 2519674 B1 EP2519674 B1 EP 2519674B1 EP 10796433 A EP10796433 A EP 10796433A EP 2519674 B1 EP2519674 B1 EP 2519674B1
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EP
European Patent Office
Prior art keywords
washing
unit
control unit
user
detected
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Application number
EP10796433.0A
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English (en)
French (fr)
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EP2519674A1 (de
Inventor
Gokhan Ozgurel
Emre Ozturk
Yavuz Sahin
Ilkan Erdem
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.)
Arcelik AS
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Arcelik AS
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Priority to PL10796433T priority Critical patent/PL2519674T3/pl
Publication of EP2519674A1 publication Critical patent/EP2519674A1/de
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Publication of EP2519674B1 publication Critical patent/EP2519674B1/de
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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 
    • D06F39/007—Arrangements of water softeners

Definitions

  • the present invention relates to washing machines wherein water softening process is performed.
  • a washing program is implemented that consists of various steps such as pre-washing, main washing and rinsing.
  • the washing and/or drying performance is inversely proportional to the hardness degree of water.
  • the hardness of water results from the positive calcium and magnesium ions (Ca++ and Mg++) dissolved therein.
  • the softening unit having an ion exchanger is used in order to decrease the hardness of water.
  • the water used in washing is first passed over the ion exchanger, for example, resin.
  • the ion exchanger absorbs these ions from the water and gives off sodium ions (Na+) instead. Consequently, the hardness of water is decreased.
  • the ion exchanger becomes unable to absorb the calcium and magnesium ions. Therefore, the calcium and magnesium ions are provided to be removed and to be enriched with sodium ions again by keeping the ion exchanger in a salt solution (for example NaCl) or by the capacitive deionization method. This process is called regeneration. It is important to make the regeneration process properly so that the ion exchanger can soften the water. Sensors are used in the technique for performing the regeneration process in the correct frequency.
  • a washing machine with the features of the preamble of claim 1 is known from WO 0064325 .
  • German Patent Application No. DE19841568 a washer is explained that comprises an electrical conductivity sensor which measures the electrical conductivity of water both before and after water is passed through the ion exchanger.
  • the decision for regeneration is given by registering and comparing the difference with previous values of conductivity from earlier treatment cycles detected by the two sensors. If the said difference is below a certain threshold value then it is understood that the ion exchanger is not functioning properly and regeneration is performed.
  • the state of the art European Patent Application No. EP1252855 the explained washer , comprises a conductivity sensor that measures the conductivity of the ion exchanger. When to perform the regeneration process is determined in accordance with the measured value.
  • the aim of the present invention is the realization of a washing machine wherein effective washing is performed even in the case the water softening process cannot be performed.
  • the water softening unit providing to decrease hardness of water, comprises an ion exchanger, a regeneration unit and a sensor that detects whether or not the regeneration unit is functioning. Work data of the water softening unit is transmitted to the control unit that regulates the washing program.
  • control unit When the control unit detects an error in the regeneration unit or in the sensor during the washing performed with the parameters selected by the user, the control unit readjusts the washing parameters so that decrease in the washing effectiveness is prevented.
  • the water temperature selected by the user is increased by the control unit so that the laundry is cleaned effectively which is washed with un-softened water resulting from the softening unit not functioning due to depletion of ions providing regeneration in the regeneration unit or the sensor not being able to transmit data as a result of an electrical malfunction.
  • the control unit prolongs the duration of the washing process by readjusting the program duration selected by the user. Consequently, even though the water cannot be softened due to the occurring error, the cleaning performance is prevented from decreasing by performing the washing for a longer period of time.
  • the drum rotates at a certain speed during washing according to the selected washing program.
  • the control unit increases the decreased washing effectiveness resulting from water not being softened by increasing the rotation speed by a predetermined amount.
  • the control unit prolongs the rotation duration and shortens the stopping duration of the drum which rotates for a certain time and stops for a certain time under normal conditions. Consequently, the laundry is provided to be cleaned better by being agitated more.
  • control unit continues the washing process with the changed parameters however delivers a warning to the user when the softening unit is detected not to function properly.
  • control unit changes the washing parameters thus preventing the washing performance from being adversely affected when an error is detected that prevents the softening unit from functioning properly.
  • the washing machine (1) provides cleaning of the laundry in accordance with a washing program that includes at least some of the various steps like pre-washing, main washing, rinsing, and spin-drying.
  • the washing programs are performed in accordance with the parameters like washing temperature and washing duration selected by the user.
  • the washing machine (1) comprises a drum (2) wherein the laundry to be washed is placed, a softening unit (3) having an ion exchanger (4) providing the water to be delivered to the drum (2) to be softened, a regeneration unit (5) that provides regeneration process of the ions to be performed when the ions in the ion exchanger (4) are decreased, and a sensor (6) that detects when the ion exchanger (4) becomes unable to absorb the ions contained in the water passing therethrough ( Figure 1 ).
  • the ion exchanger (4) becomes unable to absorb the ions contained in the water passing therethrough anymore with the lapse of time. Therefore, in the ion exchanger (4) the calcium and magnesium ions are provided to be separated from the ions supplied by the regeneration unit (5) and to be enriched with the sodium ions again. This process is called regeneration.
  • the washing machine (1) comprises a control unit (7) that actuates the regeneration process in accordance with the data received from the sensor (6). Under normal work conditions, the sensor (6), delivers data to the control unit (7) at the start of each washing process about whether or not the regeneration process will be performed.
  • the control unit (7) changes the parameters of the washing program selected by the user when the softening unit (3) is detected to have become unable to function properly.
  • the softening unit (3) becomes unable to function properly in cases when the ions in the regeneration unit (5) are depleted or the connection between the regeneration unit (5) and the ion exchanger (4) is broken or the sensor (6) malfunctions.
  • the control unit (7) regulates the washing parameters such that the washing effectiveness that will at least be maintained by softened water is provided so that hard water does not decrease the washing effectiveness.
  • the washing effectiveness obtained by the washing machine (1) with softened water and the washing parameters of the program selected by the user is provided with the parameters changed by the control unit (7) when the washing water cannot be softened due malfunctioning of the ion exchanger (4) or the sensor (6).
  • the control unit (7) when the softening unit (3) becomes unable to function properly, the control unit (7) increases the washing temperature (T1) determined while the washing program is selected by the user, by an amount ( ⁇ T) predetermined by the producer. For example, if an error is detected while a washing program operates wherein the user has selected the washing temperature (T1) for washing medium soiled laundry, the control unit (7) increases the washing temperature to T1+ ⁇ T without requiring intervention of the user. Thus, the negative contribution of hard water in washing effectiveness is compensated by the increased water temperature.
  • the control unit (7) prolongs the washing duration (t1) determined while the washing program is selected by the user, by an amount ( ⁇ t) predetermined by the producer.
  • the user selects the washing duration (t1) that will be sufficient for effective washing in the case the softening unit (3) can perform adequate softening.
  • the control unit (7) provides the washing duration to be (t1+ ⁇ t) when the selected washing duration (t1) is inadequate with the water that cannot be softened resulting from the detected error.
  • the control unit (7) increases the rotational speed (V1) of the drum (2) during the washing process in the washing program selected by the user, by an amount ( ⁇ V) predetermined by the producer.
  • V1 rotational speed of the drum (2) during the washing process in the washing program selected by the user
  • the control unit (7) increases the rotation duration (tr) of the drum (2) in the washing step of the washing program selected by the user by a duration ( ⁇ ta) predetermined by the producer which is recorded in memory and decreases the stop times (ts) by the same duration ( ⁇ ta). Consequently, the decrease in washing effectiveness resulting from hardness of water is compensated by increasing mechanical movements of the laundry in the drum (2) without making a change in the total washing duration (tr+ts) selected by the user.
  • control unit (7) gives a warning to the user informing about the problem when the softening unit (3) is detected to not function properly.
  • the errors that will prevent the softening unit (3) from functioning properly like not being able to receive data from the sensor (6) that detects when to perform the regeneration process or depletion of ions in the regeneration unit (5) are detected by the control unit (7).
  • the control unit (7) regulates the washing parameters when error is detected such that at least the washing effectiveness that is provided with the parameters selected by the user in the error-free situation is maintained.
  • the washing machine (1) is provided to perform the washing process effectively without the intervention of the user or the technical maintenance personnel.

Landscapes

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

Claims (6)

  1. Waschmaschine (1), umfassend eine Trommel (2), in die die zu waschende Wäsche gelegt wird, eine Weichmachereinheit (3) mit einem Ionentauscher (4), die ein Weichmachen des an die Trommel (2) geleiteten Wassers ermöglicht, eine Regenerierungseinheit (5), die ein Durchführen eines Regenerierungsprozesses der Ionen ermöglicht, wenn die Ionen im Ionentauscher (4) abnehmen, und einen Sensor (6), der erkennt, wenn der Ionentauscher (4) die im Wasser, das durch ihn hindurch strömt, enthaltenen Ionen nicht aufnehmen kann, gekennzeichnet durch die Steuereinheit (7), die die Parameter des vom Benutzer ausgewählten Waschprogramms ändert, wenn erkannt wird, dass die Weichmachereinheit (3) nicht mehr wie vorgesehen arbeitet.
  2. Waschmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Steuereinheit (7) die Waschtemperatur (T1), die bestimmt wird, während das Waschprogramm von dem Benutzer ausgewählt wird, um eine Größe (ΔT) senkt, die vom Hersteller vorgegeben wird, wenn erkannt wird, dass die Weichmachereinheit (3) nicht mehr wie vorgesehen arbeitet.
  3. Waschmaschine (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinheit (7) die Waschdauer (t1), die bestimmt wird, während das Waschprogramm von dem Benutzer ausgewählt wird, um eine Größe (Δt) verlängert, die vom Hersteller vorgegeben wird, wenn erkannt wird, dass die Weichmachereinheit (3) nicht mehr wie vorgesehen arbeitet.
  4. Waschmaschine (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinheit (7) die Drehzahl (V1) der Trommel (2) während des Waschvorgangs in dem vom Benutzer ausgewählten Waschprogramm um eine Größe (ΔV) erhöht, die vom Hersteller vorgegeben wird, wenn erkannt wird, dass die Weichmachereinheit (3) nicht mehr wie vorgesehen arbeitet.
  5. Waschmaschine (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinheit (7) die Drehdauer (tr) der Trommel (2) im Waschschritt des vom Benutzer ausgewählten Waschprogramms um eine Dauer (Δta) erhöht, die vom Hersteller vorgegeben wird und im Speicher aufgezeichnet ist, und die Haltezeiten (ts) um dieselbe Dauer (Δta) senkt, wenn erkannt wird, dass die Weichmachereinheit (3) nicht mehr wie vorgesehen arbeitet.
  6. Waschmaschine (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinheit (7) eine Warnung an den Benutzer bereitstellt, die ihn über das Problem informiert, wenn erkannt wird, dass die Weichmachereinheit (3) nicht mehr wie vorgesehen arbeitet.
EP10796433.0A 2009-12-31 2010-12-24 Waschmaschine mit enthärtungseinrichtung Active EP2519674B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10796433T PL2519674T3 (pl) 2009-12-31 2010-12-24 Pralka zawierająca jednostkę zmiękczającą

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200910071 2009-12-31
PCT/EP2010/070740 WO2011080241A1 (en) 2009-12-31 2010-12-24 A washing machine comprising a softening unit

Publications (2)

Publication Number Publication Date
EP2519674A1 EP2519674A1 (de) 2012-11-07
EP2519674B1 true EP2519674B1 (de) 2015-04-01

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EP (1) EP2519674B1 (de)
PL (1) PL2519674T3 (de)
WO (1) WO2011080241A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015101390A1 (en) * 2013-12-30 2015-07-09 Electrolux Appliances Aktiebolag Laundry washing machine with water softening system and method for controlling a laundry washing machine
CN105849332B (zh) * 2013-12-30 2018-02-27 伊莱克斯家用电器股份公司 洗衣机和用于控制洗衣机的方法
US10494751B2 (en) 2013-12-30 2019-12-03 Electrolux Appliances Aktiebolag Laundry washing machine with water softening system and method for controlling a laundry washing machine
WO2015101425A1 (en) * 2013-12-30 2015-07-09 Electrolux Appliances Aktiebolag Laundry washing machine and method for controlling a laundry washing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131791C1 (en) * 1991-09-24 1993-02-04 Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De Method for operating dishwasher - uses programmable water softening ion exchanger and regenerating water storage container
DE19841568A1 (de) 1997-11-26 1999-05-27 Miele & Cie Verfahren und Anordnung zur Bestimmung des Regenerierzeitpunktes einer Wasserenthärtungseinrichtung insbesondere für wasserführende Haushaltgeräte
IT1309792B1 (it) * 1999-04-22 2002-01-30 Eltek Spa Elettrodomestico utilizzante acqua, in particolare una macchinadi lavaggio, con dispositivo perfezionato per l'abbattimento
ITMI20010874A1 (it) 2001-04-26 2002-10-26 Whirlpool Co Dispositivo addolcitore in particolare per apparecchi domestici come lavastoviglie lavabiancheria e simili
KR101028078B1 (ko) * 2004-02-13 2011-04-08 엘지전자 주식회사 식기 세척기의 세탁방법

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EP2519674A1 (de) 2012-11-07
PL2519674T3 (pl) 2015-08-31
WO2011080241A1 (en) 2011-07-07

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