WO2011042341A1 - A washing machine comprising a water softener unit - Google Patents

A washing machine comprising a water softener unit Download PDF

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Publication number
WO2011042341A1
WO2011042341A1 PCT/EP2010/064460 EP2010064460W WO2011042341A1 WO 2011042341 A1 WO2011042341 A1 WO 2011042341A1 EP 2010064460 W EP2010064460 W EP 2010064460W WO 2011042341 A1 WO2011042341 A1 WO 2011042341A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
water softener
softener unit
detergent
washing machine
Prior art date
Application number
PCT/EP2010/064460
Other languages
French (fr)
Inventor
Gokhan Ozgurel
Zehra Ulger
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to EP10763660.7A priority Critical patent/EP2486180B1/en
Publication of WO2011042341A1 publication Critical patent/WO2011042341A1/en

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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 
    • D06F39/007—Arrangements of water softeners

Definitions

  • the present invention relates to a washing machine wherein use of the water softener unit and the regeneration process are decreased.
  • a washing program is implemented that consists of various washing 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 positively charged calcium and magnesium ions (Ca++ and Mg++) dissolved therein.
  • the water used in washing is first passed through an ion exchanger, for example a resin, in order to use soft water in washing machines.
  • the ion exchanger absorbs these ions from the water and gives off sodium ions (Na+) instead.
  • Na+ sodium ions
  • the ion exchanger is kept in a salt solution (for example NaCI) and thus, its calcium and magnesium ions are provided to be decomposed and it is provided to be enriched with sodium ions again.
  • a salt solution for example NaCI
  • This process is called regeneration. Determining the frequency of the regeneration process (once in how many washing) is important in terms of the washing machine performance. If the regeneration process is performed more frequently than required, salt consumption will increase unnecessarily.
  • the aim of the present invention is the realization of a washing machine wherein regeneration process is not performed unnecessarily.
  • the washing machine realized in order to attain the aim of the present invention is explicated in the claims.
  • the washing machine comprises a button that is actuated when liquid detergent is used by the user and a valve on the mains line.
  • the button When the button is actuated, water is passed through the water softener unit by means of the valve.
  • the liquid detergents do not contain the builder ingredients which provide softening of water. Therefore, when liquid detergent is used, water is required to pass through the water softener unit.
  • the valve directs the water, received from the mains, optionally either to the water softener unit or the detergent dispenser.
  • the valve is controlled by a control unit which provides directing thereof depending on whether or not the button is pressed on.
  • the control unit provides the valve to direct water to the water softener unit if the button is pressed.
  • the regeneration frequency of the water softener unit is decreased by activating the water softener unit only when liquid detergent is used.
  • the washing machine of the present invention by means of the water softener unit that is activated only when the user actuates the button, the laundry is also cleaned better even when washed with liquid detergent and the regeneration frequency of the water softener unit is decreased by using it only when necessary and thus, the cost of washing is decreased.
  • hardness of the mains water is measured by a sensor disposed prior to the valve on the mains line. If the water is very soft, the control unit provides the valve to direct water to the detergent dispenser and not to the water softener unit even if the user actuates the button.
  • the user is provided to press the button and thus, the water is provided to be softened in the water softener unit on account of the fact that water needs to be softened when liquid detergent is used.
  • the water softener unit is prevented from being activated unnecessarily. Consequently, the water softener unit is used only when necessary, its ions are not consumed in a short period of time and thus, the regeneration frequency is decreased.
  • 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, drying and regeneration.
  • the washing machine (1 ) comprises a drum (2) wherein the laundry to be cleaned is placed, a detergent dispenser (3) wherein the detergent to be transferred into the drum (2) is put and through which the water received from the mains line (H) passes to be transferred to the drum (2) by sweeping the detergent, a water softener unit (4) which is located between the mains line (H) and the detergent dispenser (3) and provides the water hardness to be decreased and an ion supplier (5) which contains the ions required for regeneration of the water softener unit (4) and which is engaged with the water softener unit (4) ( Figure 1 ).
  • the water softener unit (4) becomes incapable of absorbing the ions in the water passing therethrough. Therefore, from time to time, the water softener unit (4) is kept in a salt water solution delivered from the ion supplier (5) and thus, its calcium and magnesium ions are provided to be decomposed and it is provided to be enriched with sodium ions again. This process is called regeneration.
  • the washing machine (1 ) furthermore, comprises a button (6) which is actuated by the user when liquid detergent is placed in the detergent dispenser (3).
  • the water softener unit (4) is activated when the button (6) is actuated ( Figure 1 ).
  • the washing machine (1 ) comprises at least one valve (7) disposed prior to the water softener unit (4) on the mains line (H) and a control unit (8) that controls the valve (7) such that water will be provided to be directed to the water softener unit (4) when the button (6) is actuated and directly to the detergent dispenser (3) when the button (6) is not actuated ( Figure 1 ).
  • the control unit (8) detects that the detergent does not contain builder ingredients and that water is required to be passed through the water softener unit (4).
  • a bidirectional valve (7) is provided on the mains line (H), one end opening to the water softener unit (4) and the other end to the detergent dispenser (3). The control unit (8) opens the valve (7) end opening to the water softener unit (4) when the button (6) is actuated.
  • the water softener unit (4) is a mechanism like ion exchanger resin
  • the water softener unit (4) With the lapse of time, becomes incapable of absorbing the ions in the water which is passed therethrough. Therefore, from time to time, the water softener unit (4) is kept in a salt water solution delivered from the ion supplier (5) and thus, its calcium and magnesium ions are provided to be decomposed and it is provided to be enriched with the sodium ions again.
  • a water softener unit (4) used as the electrochemical ion exchanger can be used again by means of the ion supplier (5) regenerating the ions. This process is called regeneration.
  • the unnecessary use of the water softener unit (4) is prevented by means of the water softener unit (4) being activated only when the user actuates the button (6) when liquid detergent is placed in the detergent dispenser (3).
  • the water softener unit (4) is not activated when solid detergent is used since the button (6) is not pressed on, consequently the life span of the water softener unit (4) is prolonged and also the regeneration frequency is decreased. Accordingly, the performance of the washing machine (1 ) increases.
  • the control unit (8) controls the valve (7) such that water is provided to be directed to the detergent dispenser (3) if the hardness of the water is lower than a minimum hardness degree prestored in its memory ( Figure 1).
  • a predetermined hardness degree that is, when the water is very soft, it is not necessary to direct the water to the water softener unit (4) for softening. Therefore, the hardness degree of water is measured by the sensor (9) disposed prior to the valve (7) on the mains line (H) and the control unit (8) controls whether or not it is lower than the minimum degree of hardness stored in its memory.
  • control unit (8) opens the valve (7) such that water is directed to the detergent dispenser (3) instead of the water softener unit (4) even if the button (6) has been pressed.
  • the water softener unit (4) is not activated unnecessarily if there is soft water in the mains line (H).
  • the washing machine (1 ) of the present invention prevents unnecessary use of the water softener unit (4) by means of the water softener unit (4) which is activated when the button (6) is actuated by the user if liquid detergent is used.
  • the valve (7) controlled by the control unit (8) directs the water to the water softener unit (4) if the button (6) is actuated and to the detergent dispenser (3) if the button (6) is not actuated. Accordingly, when liquid detergent is not used, the water, which is also softened by th detergent, is not furthermore passed through the water softener unit (4), thus the performance of the washing machine (1 ) increases.

Abstract

The present invention relates to a washing machine (1) comprising a drum (2) wherein the washing process is performed, a detergent dispenser (3) wherein the detergent to be transferred into the drum (2) is placed, through which the water received from the mains passes to be transferred to the drum (2) by sweeping the detergent, a water softener unit (4) which is disposed between the mains line (H) and the detergent dispenser (3) and which provides the hardness of water to be decreased, and an ion supplier (5) which contains the ions for regeneration of the water softener unit (4) and which is engaged with the water softener unit (4).

Description

Description
A WASHING MACHINE COMPRISING A WATER SOFTENER UNIT
[0001] The present invention relates to a washing machine wherein use of the water softener unit and the regeneration process are decreased.
[0002] In a washing machine, a washing program is implemented that consists of various washing steps such as pre-washing, main washing and rinsing. In these machines, the washing and/or drying performance is inversely proportional to the hardness degree of water. As is known, the hardness of water results from the positively charged calcium and magnesium ions (Ca++ and Mg++) dissolved therein. The water used in washing is first passed through an ion exchanger, for example a resin, in order to use soft water in washing machines. The ion exchanger absorbs these ions from the water and gives off sodium ions (Na+) instead. Thus, the hardness of water is reduced. However, in time, the ion exchanger cannot absorb the calcium and magnesium ions anymore. Therefore, from time to time, the ion exchanger is kept in a salt solution (for example NaCI) and thus, its calcium and magnesium ions are provided to be decomposed and it is provided to be enriched with sodium ions again. This process is called regeneration. Determining the frequency of the regeneration process (once in how many washing) is important in terms of the washing machine performance. If the regeneration process is performed more frequently than required, salt consumption will increase unnecessarily.
[0003] In the European Patent Application No EP0425815, a washing machine, comprising means which reduces the hardness of the water supplied to the machine and at least a hardness sensor device disposed prior to means for reducing hardness of water, is explained. The sensor used in this method increases the cost of the washing machine. At the same time, in case the sensor malfunctions, washing performance is lowered as a result of water being softened unnecessarily or not being softened at all.
[0004] The aim of the present invention is the realization of a washing machine wherein regeneration process is not performed unnecessarily.
[0005] The washing machine realized in order to attain the aim of the present invention is explicated in the claims. [0006] The washing machine comprises a button that is actuated when liquid detergent is used by the user and a valve on the mains line. When the button is actuated, water is passed through the water softener unit by means of the valve. The liquid detergents do not contain the builder ingredients which provide softening of water. Therefore, when liquid detergent is used, water is required to pass through the water softener unit. The valve directs the water, received from the mains, optionally either to the water softener unit or the detergent dispenser. The valve is controlled by a control unit which provides directing thereof depending on whether or not the button is pressed on. The control unit provides the valve to direct water to the water softener unit if the button is pressed. The regeneration frequency of the water softener unit is decreased by activating the water softener unit only when liquid detergent is used.
[0007] In the washing machine of the present invention, by means of the water softener unit that is activated only when the user actuates the button, the laundry is also cleaned better even when washed with liquid detergent and the regeneration frequency of the water softener unit is decreased by using it only when necessary and thus, the cost of washing is decreased.
[0008] In an embodiment of the present invention, hardness of the mains water is measured by a sensor disposed prior to the valve on the mains line. If the water is very soft, the control unit provides the valve to direct water to the detergent dispenser and not to the water softener unit even if the user actuates the button.
[0009] By means of the embodiment of the present invention, the user is provided to press the button and thus, the water is provided to be softened in the water softener unit on account of the fact that water needs to be softened when liquid detergent is used. When the user does not actuate the button, the water softener unit is prevented from being activated unnecessarily. Consequently, the water softener unit is used only when necessary, its ions are not consumed in a short period of time and thus, the regeneration frequency is decreased.
[0010] The washing machine realized in order to attain the aim of the present invention is illustrated in the attached figures, where: [001 1] Figure 1 - is the schematic view of a washing machine.
[0012] The elements illustrated in the figures are numbered as follows:
1. Washing machine
2. Drum
3. Detergent dispenser
4. Water softener unit
5. Ion supplier
6. Button
7. Valve
8. Control unit
9. Sensor
[0013] 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, drying and regeneration.
[0014] The washing machine (1 ) comprises a drum (2) wherein the laundry to be cleaned is placed, a detergent dispenser (3) wherein the detergent to be transferred into the drum (2) is put and through which the water received from the mains line (H) passes to be transferred to the drum (2) by sweeping the detergent, a water softener unit (4) which is located between the mains line (H) and the detergent dispenser (3) and provides the water hardness to be decreased and an ion supplier (5) which contains the ions required for regeneration of the water softener unit (4) and which is engaged with the water softener unit (4) (Figure 1 ).
[0015] In the washing machine (1 ), with the lapse of time, the water softener unit (4) becomes incapable of absorbing the ions in the water passing therethrough. Therefore, from time to time, the water softener unit (4) is kept in a salt water solution delivered from the ion supplier (5) and thus, its calcium and magnesium ions are provided to be decomposed and it is provided to be enriched with sodium ions again. This process is called regeneration.
[0016] The washing machine (1 ), furthermore, comprises a button (6) which is actuated by the user when liquid detergent is placed in the detergent dispenser (3). The water softener unit (4) is activated when the button (6) is actuated (Figure 1 ).
[0017] The washing machine (1 ) comprises at least one valve (7) disposed prior to the water softener unit (4) on the mains line (H) and a control unit (8) that controls the valve (7) such that water will be provided to be directed to the water softener unit (4) when the button (6) is actuated and directly to the detergent dispenser (3) when the button (6) is not actuated (Figure 1 ).
[0018] The detergents used for cleaning the laundry are divided into two
categories, the ones containing builder ingredients used for removing the hardness of water and the ones that don't contain builder ingredients. The detergents supplied as liquid detergent in the market do not contain builder ingredients. When the user actuates the button (6) while using liquid detergent, the control unit (8) detects that the detergent does not contain builder ingredients and that water is required to be passed through the water softener unit (4). Preferably a bidirectional valve (7) is provided on the mains line (H), one end opening to the water softener unit (4) and the other end to the detergent dispenser (3). The control unit (8) opens the valve (7) end opening to the water softener unit (4) when the button (6) is actuated. Consequently, water reaches the detergent dispenser (3) after being softened in the water softener unit (4) when liquid detergent is used. Accordingly, the laundry can be washed better by softened water when liquid detergent is used. When solid detergent containing builder ingredients with water softening features is used, the user does not actuate the button (6) and the control unit (8) opens the valve (7) end opening to the detergent dispenser (3). Thus, water reaches the detergent dispenser (3) without passing through the water softener unit (4).
[0019] The water softener unit (4) is a mechanism like ion exchanger resin,
filtration systems holding Ca and MG ions, electrochemical,
electro-deionization which provides the hardness of water to be removed. The water softener unit (4), with the lapse of time, becomes incapable of absorbing the ions in the water which is passed therethrough. Therefore, from time to time, the water softener unit (4) is kept in a salt water solution delivered from the ion supplier (5) and thus, its calcium and magnesium ions are provided to be decomposed and it is provided to be enriched with the sodium ions again. For example, a water softener unit (4) used as the electrochemical ion exchanger can be used again by means of the ion supplier (5) regenerating the ions. This process is called regeneration. The unnecessary use of the water softener unit (4) is prevented by means of the water softener unit (4) being activated only when the user actuates the button (6) when liquid detergent is placed in the detergent dispenser (3). The water softener unit (4) is not activated when solid detergent is used since the button (6) is not pressed on, consequently the life span of the water softener unit (4) is prolonged and also the regeneration frequency is decreased. Accordingly, the performance of the washing machine (1 ) increases.
[0020] In an embodiment of the present invention, the washing machine (1 )
comprises a sensor (9) which is disposed prior to the valve (7) and which measures the hardness of mains water. The control unit (8) controls the valve (7) such that water is provided to be directed to the detergent dispenser (3) if the hardness of the water is lower than a minimum hardness degree prestored in its memory (Figure 1). In the case hardness of water is lower than a predetermined hardness degree, that is, when the water is very soft, it is not necessary to direct the water to the water softener unit (4) for softening. Therefore, the hardness degree of water is measured by the sensor (9) disposed prior to the valve (7) on the mains line (H) and the control unit (8) controls whether or not it is lower than the minimum degree of hardness stored in its memory. If the hardness degree of water is low, the control unit (8) opens the valve (7) such that water is directed to the detergent dispenser (3) instead of the water softener unit (4) even if the button (6) has been pressed. Thus, the water softener unit (4) is not activated unnecessarily if there is soft water in the mains line (H).
[0021] The washing machine (1 ) of the present invention prevents unnecessary use of the water softener unit (4) by means of the water softener unit (4) which is activated when the button (6) is actuated by the user if liquid detergent is used. The valve (7) controlled by the control unit (8) directs the water to the water softener unit (4) if the button (6) is actuated and to the detergent dispenser (3) if the button (6) is not actuated. Accordingly, when liquid detergent is not used, the water, which is also softened by th detergent, is not furthermore passed through the water softener unit (4), thus the performance of the washing machine (1 ) increases.
It is to be understood that the present invention is not limited to the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims

Claims
1. A washing machine (1 ) comprising a drum (2) wherein the laundry to be
cleaned is placed, a detergent dispenser (3) wherein the detergent to be transferred into the drum (2) is placed, through which the water received from the mains line (H) passes to be transferred to the drum (2) by sweeping the detergent, a water softener unit (4) disposed between the mains line (H) and the detergent dispenser (3) providing to decrease hardness of water and an ion supplier (5) containing the ions for regeneration of the water softener unit (4) which is engaged with the water softener unit (4) and characterized by a button (6) which is actuated by the user when liquid detergent is placed in the detergent dispenser (3), the water softener unit (4) which is activated when the button (6) is actuated, at least one valve (7) which is disposed prior to the water softener unit (4) on the mains line (H) and a control unit (8) that controls the valve (7) such that water is provided to be directed to the water softener unit (4) when the button (6) is actuated and directly to the detergent dispenser (3) when the button (6) is not actuated.
2. A washing machine (1 ) as in Claim 1 , characterized by a sensor (9) which is disposed prior to the valve (7) and which measures the hardness of water, and the control unit (8) which controls the valve (7) such that water is provided to be directly guided to the detergent dispenser (3) if hardness of water is lower than a minimum hardness degree prestored in its memory.
PCT/EP2010/064460 2009-10-09 2010-09-29 A washing machine comprising a water softener unit WO2011042341A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10763660.7A EP2486180B1 (en) 2009-10-09 2010-09-29 A washing machine comprising a water softener unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200907681 2009-10-09
TRA2009/07681 2009-10-09

Publications (1)

Publication Number Publication Date
WO2011042341A1 true WO2011042341A1 (en) 2011-04-14

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TR (1) TR201716783T3 (en)
WO (1) WO2011042341A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2554738A1 (en) * 2011-08-01 2013-02-06 Electrolux Home Products Corporation N.V. Laundry washing machine
DE102013206359A1 (en) 2013-04-11 2014-10-16 Henkel Ag & Co. Kgaa Process for washing textiles
EP2857572A1 (en) * 2013-10-02 2015-04-08 Samsung Electronics Co., Ltd Softening apparatus and washing machine including the same
WO2015101391A1 (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
CN105849331A (en) * 2013-12-30 2016-08-10 伊莱克斯家用电器股份公司 Laundry washing machine with water softening system and method for controlling a laundry washing machine
US9637856B2 (en) 2011-08-01 2017-05-02 Electrolux Home Products N.V. Laundry washing machine
US9663892B2 (en) 2011-08-01 2017-05-30 Electrolux Home Products Corporation N.V. Laundry washing machine
US9790635B2 (en) 2011-08-01 2017-10-17 Electrolux Home Products Corporation N.V. Laundry washing machine with a water softening device
US10544536B2 (en) 2013-12-30 2020-01-28 Electrolux Appliances Aktiebolag Laundry washing machine and method for controlling a laundry washing machine
US10563339B2 (en) 2013-12-30 2020-02-18 Electrolux Appliances Aktiebolag Laundry washing machine and method for controlling a laundry washing machine

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EP4074883A1 (en) * 2021-04-15 2022-10-19 Electrolux Appliances Aktiebolag Laundry treatment appliance with water softening system and device for generating steam
EP4074882A1 (en) * 2021-04-15 2022-10-19 Electrolux Appliances Aktiebolag Laundry treatment appliance with water softening system

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9790636B2 (en) 2011-08-01 2017-10-17 Electrolux Home Products Corporation N.V. Laundry washing machine with a water softening device
AU2012292187B2 (en) * 2011-08-01 2017-08-24 Electrolux Home Products Corporation N.V. Laundry washing machine with a water softening device
US9637856B2 (en) 2011-08-01 2017-05-02 Electrolux Home Products N.V. Laundry washing machine
US9663892B2 (en) 2011-08-01 2017-05-30 Electrolux Home Products Corporation N.V. Laundry washing machine
US10385500B2 (en) 2011-08-01 2019-08-20 Electrolux Home Products Corporation N.V. Laundry washing machine with a water softening device
EP2554738A1 (en) * 2011-08-01 2013-02-06 Electrolux Home Products Corporation N.V. Laundry washing machine
WO2013017546A1 (en) * 2011-08-01 2013-02-07 Electrolux Home Products Corporation N.V. Laundry washing machine with a water softening device
US9790635B2 (en) 2011-08-01 2017-10-17 Electrolux Home Products Corporation N.V. Laundry washing machine with a water softening device
DE102013206359A1 (en) 2013-04-11 2014-10-16 Henkel Ag & Co. Kgaa Process for washing textiles
EP2857572A1 (en) * 2013-10-02 2015-04-08 Samsung Electronics Co., Ltd Softening apparatus and washing machine including the same
CN104512945A (en) * 2013-10-02 2015-04-15 三星电子株式会社 Softening apparatus and washing machine including the same
US11180887B2 (en) 2013-12-30 2021-11-23 Electrolux Appliances Aktiebolag Laundry washing machine with water softening system and method for controlling a laundry washing machine
CN105874114A (en) * 2013-12-30 2016-08-17 伊莱克斯家用电器股份公司 Laundry washing machine with water softening system and method for controlling a laundry washing machine
AU2013409581B2 (en) * 2013-12-30 2018-12-20 Electrolux Appliances Aktiebolag Laundry washing machine with water softening system and method for controlling a laundry washing machine
CN105849331A (en) * 2013-12-30 2016-08-10 伊莱克斯家用电器股份公司 Laundry washing machine with water softening system and method for controlling a laundry washing machine
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
US10544536B2 (en) 2013-12-30 2020-01-28 Electrolux Appliances Aktiebolag Laundry washing machine and method for controlling a laundry washing machine
US10563339B2 (en) 2013-12-30 2020-02-18 Electrolux Appliances Aktiebolag Laundry washing machine and method for controlling a laundry washing machine
WO2015101391A1 (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

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EP2486180B1 (en) 2018-06-27
EP2486180A1 (en) 2012-08-15
TR201716783T3 (en) 2017-12-21

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