EP0749720A1 - Regenerationsverfahren einer Wasserenthärtungsanlage für eine Wasch-oder Geschirrspülmaschine - Google Patents

Regenerationsverfahren einer Wasserenthärtungsanlage für eine Wasch-oder Geschirrspülmaschine Download PDF

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Publication number
EP0749720A1
EP0749720A1 EP96109227A EP96109227A EP0749720A1 EP 0749720 A1 EP0749720 A1 EP 0749720A1 EP 96109227 A EP96109227 A EP 96109227A EP 96109227 A EP96109227 A EP 96109227A EP 0749720 A1 EP0749720 A1 EP 0749720A1
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EP
European Patent Office
Prior art keywords
water
regeneration
container
valve
saline solution
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
EP96109227A
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English (en)
French (fr)
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EP0749720B1 (de
Inventor
Karl-Heinz Müller
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.)
Whirlpool Europe BV
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Whirlpool Europe BV
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Publication date
Application filed by Whirlpool Europe BV filed Critical Whirlpool Europe BV
Publication of EP0749720A1 publication Critical patent/EP0749720A1/de
Application granted granted Critical
Publication of EP0749720B1 publication Critical patent/EP0749720B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4229—Water softening arrangements
    • 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 invention relates to a method of regenerating a water-softening installation for an automatic washing machine or dishwasher, which has a wash or rinse container connected to a water container which is filled with active resin and into which fresh water can be led for softening in intake phases via a software-driven intake valve, a storage container and a water supply pipe and into which saline solution for regenerating the resin can be led from a saline solution container by means of a software-driven regeneration valve, a non-return valve being connected after the regeneration valve between the storage container and the saline solution container, said regeneration valve being permeable only in the direction towards the water softener and connected on the outlet side with the entrance of the water softener and of a water supply pipe connected electrically to it and taken from the storage container, the outlet of the storage container being arranged above the saline solution container and the water softener in such a way that, when the intake valve is open, fresh water can only be led into the water softener via the water supply pipe when the storage container
  • An automatic washing machine with a regeneration phase of this kind is known from EP 0 496 957 B1.
  • a pre-measured amount of saline solution is led from the saline solution container into the water softener.
  • an additional amount of fresh water is led into the water softener.
  • the water softener has a total inner area that is as big as the volume of the resin poured into it, plus some free space.
  • the sum of the measured saline solution and of the above-mentioned additional amount of fresh water must be substantially as big as the total free space in the water softener, so that in the water softener the process of regeneration is improved by a kind of stirring or mixing effect.
  • in regeneration consideration should be given to the variable degree of hardness of the fresh water used. It is not easy to optimize regeneration in this way.
  • the washing machine according to DE 37 10 511 A1 has a water-softening installation of a similar structure. However, in this, too, the stirring and mixing effect during the regeneration phase is not optimal.
  • the object of the invention is to design a method of the kind mentioned initially in such a way that the regeneration process is optimized during the regeneration phase in a simple fashion.
  • This object is achieved according to the invention in that the regeneration valve is opened in the regeneration phase and thus a common water level is set in the storage container, in the saline solution container, in the connecting pipe and the water softener up to the wash or rinse container, which level lies above the upper water level of the saline solution container and the water softener, and in that a through pulse is created in the water supply pipe by opening the intake valve for a short time in the regeneration phase.
  • the saline solution is led from its container into the water softener and the fresh water stored in the storage container can be pre-measured and adapted optimally to the degree of hardness of the fresh water used.
  • an air-pressure pulse is created in the water supply pipe and this pulse can extend through the water softener up to the wash or rinse container. By means of the air-pressure pulse, a stirring and eddy effect is created so that the saline solution led in reaches the reaction zone of the resin more effectively.
  • the portion of the saline solution standing in the lower region of the water softener is forced upwards by the air-pressure pulse, so that a kind of exchange of the saline solution takes place and said saline solution participates more effectively in regeneration without changing, through the addition of extra fresh water, the concentration of the saline solution which is, of course, adjusted to the degree of hardness of the fresh water used.
  • Regeneration can easily be further improved by creating, in the regeneration phase, after the regeneration valve has been closed, a plurality of air-pressure pulses in the water-supply pipe by repeatedly opening the intake valve briefly.
  • the air-pressure pulses each time force the portion of the saline solution in the water softener upwards and cause repeated exchange.
  • the fresh water source can be decoupled quite simply from the water-softening installation by the storage container being connected with the exit of the intake valve via a free air gap and by the in-flow into the storage container being arranged above the outgoing water supply pipe in the upper region of the storage container.
  • the intake of fresh water into the water-softening installation is released and stopped via an intake valve 1, controlled by a program control unit 8.
  • the intake valve 1 is connected, via a free air gap 3, with the storage container 2, which has a capacity e.g. of 300 cm 3 and is connected with the entrance of the water softener 16 via the water supply pipe 4 arranged in the upper region.
  • the storage container 2 which has a capacity e.g. of 300 cm 3 and is connected with the entrance of the water softener 16 via the water supply pipe 4 arranged in the upper region.
  • a quantity of active resin 17 is accommodated between a lower membrane 21 and an upper membrane 22.
  • the water supply pipe 4 leads from the water softener 16 on to the wash container 10.
  • the outlet arranged in the lower region of the storage container 2 leads via a connecting pipe 5 and a regeneration valve 14, controlled by a program control unit 8, to the entrance of a saline solution container 7, which is filled with salt.
  • the exit of the saline solution container 7 leads via a non-return valve 20 to the entrance of the water softener 16, to which the water supply pipe 4 is also joined.
  • the non-return valve 20 is only permeable in the direction from the saline solution container 7 to the water softener 16.
  • the intake valve 1 and the regeneration valve 14 are closed.
  • the storage container 2 is partly filled. If the intake valve 1 is then opened, the storage container 2 is then filled with the regeneration volume of fresh water, i.e. with approximately 300 cm 3 . Once this has happened, the fresh water flows via the water supply pipe 4 into the water softener 16 and is softened in it, because the resin binds the hardness components of the fresh water. The soft water then flows from the water softener 16 into the wash container 10, where it is used for rinsing and/or washing processes.
  • the intake valve 1 and the regeneration valve 14 are closed.
  • the storage container 2 is filled and there is also saline solution in the saline solution container 7.
  • the resin has bound the hardness components.
  • the regeneration valve 14 is opened. From the storage container 2 the pre-measured regeneration volume of fresh water flows into the saline solution container 7 (pressure from geodetic level).
  • the non-return valve 20 opens and saline solution flows into the water softener 16.
  • the general water level 6 is thereby set, extending uniformly through the connecting pipe 5 between the storage container 2 and the saline solution container 7, through the saline solution container 7, the water supply pipe 4, the water softener 16 and the lower region of the wash container 10.
  • the hardness components are released by the saline solution and the resin 17 is regenerated.
  • the volume 23 of saline solution standing in the water supply pipe 4 does not come into contact with the resin and remains unused.
  • the regeneration valve 14 is closed and the intake valve 1 is opened briefly.
  • fresh water is discharged briefly into the storage container 2.
  • the volume of water discharged is, however, smaller than the capacity of the storage container 2, so water cannot reach the water softener 16.
  • the regeneration process is supported and optimized by these air-pressure pulses created in the second part of the regeneration phase, without diluting the concentration of the saline solution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
EP96109227A 1995-06-19 1996-06-08 Regenerationsverfahren einer Wasserenthärtungsanlage für eine Wasch-oder Geschirrspülmaschine Expired - Lifetime EP0749720B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19522140 1995-06-19
DE19522140A DE19522140C3 (de) 1995-06-19 1995-06-19 Verfahren zum Regenerieren einer Wasserenthärtungsanlage für einen Wasch- oder Geschirrspülautomaten

Publications (2)

Publication Number Publication Date
EP0749720A1 true EP0749720A1 (de) 1996-12-27
EP0749720B1 EP0749720B1 (de) 2000-01-19

Family

ID=7764657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96109227A Expired - Lifetime EP0749720B1 (de) 1995-06-19 1996-06-08 Regenerationsverfahren einer Wasserenthärtungsanlage für eine Wasch-oder Geschirrspülmaschine

Country Status (2)

Country Link
EP (1) EP0749720B1 (de)
DE (2) DE19522140C3 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004019330A1 (de) * 2003-12-22 2005-07-21 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einem System zur Wasserenthärtung
WO2006079500A1 (en) * 2005-01-27 2006-08-03 Elektra S.R.L. Method for controlling and managing the water flow to a coffee machine provided with a water softener device of ion exchange resin type, and coffee machine for implementing the method
WO2006134338A1 (en) * 2005-06-13 2006-12-21 Reckitt Benckiser (Uk) Limited Device for providing a relatively constant rate of dissolution of a solid article within it
WO2015101425A1 (en) * 2013-12-30 2015-07-09 Electrolux Appliances Aktiebolag Laundry washing machine 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
CN110693433A (zh) * 2018-07-09 2020-01-17 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
CN110693432A (zh) * 2018-07-09 2020-01-17 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
CN110693431A (zh) * 2018-07-09 2020-01-17 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
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
IT202100003668A1 (it) * 2021-02-17 2022-08-17 Bitron Spa Sistema di alimentazione e trattamento dell’acqua per elettrodomestici atto ad operare a pressione atmosferica e relativo elettrodomestico.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10244243A1 (de) * 2002-09-24 2004-03-25 Aweco Appliance Systems Gmbh & Co. Kg Haushaltsmaschine
US20180148348A1 (en) * 2015-05-08 2018-05-31 Dow Global Technologies Llc Process of use of adsorbent resin particles

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1138056A (en) * 1964-07-29 1968-12-27 Philips Nv Improvements in or relating to devices for automatically regenerating ion-exchangersin water softeners
GB2067067A (en) * 1979-11-24 1981-07-22 Bosch Siemens Hausgeraete Washing apparatus with water softening means
FR2487186A3 (fr) * 1980-07-25 1982-01-29 Licentia Gmbh Procede et dispositif pour la condensation des vapeurs d'eau presentes a l'interieur de la cuve d'un lave-vaisselle
FR2517951A3 (fr) * 1981-12-14 1983-06-17 Zanussi A Spa Industrie Machine a laver automatique equipee d'un circuit hydraulique perfectionne d'alimentation
EP0219704A1 (de) * 1985-09-26 1987-04-29 INDUSTRIE ZANUSSI S.p.A. Geschirrspülmaschine mit Wasserenthärtungsanlage und Vorrichtung zum Programmieren davon
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
EP0570872A1 (de) * 1992-05-16 1993-11-24 AWECO Kunststofftechnik Gerätebau GmbH & Co. KG Wasserenthärter für Haushalts-Geschirrspülmaschinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3710511C2 (de) * 1987-03-30 1995-12-21 Bauknecht Hausgeraete Einrichtung zum Regeln der Salzmengenzufuhr beim Regenerieren von Wasserenthärtungsanlagen, insbesondere für Geschirrspüler
IT1250374B (it) * 1991-01-23 1995-04-07 Zanussi Elettrodomestici Metodo per la rigenerazione di un addolcitore d'acqua in una macchina lavatrice
DE4422143A1 (de) * 1994-06-28 1996-01-04 Aweco Kunststofftech Geraete Verfahren zum Betrieb eines Wasserenthärters, insbesondere für Haushaltsmaschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1138056A (en) * 1964-07-29 1968-12-27 Philips Nv Improvements in or relating to devices for automatically regenerating ion-exchangersin water softeners
GB2067067A (en) * 1979-11-24 1981-07-22 Bosch Siemens Hausgeraete Washing apparatus with water softening means
FR2487186A3 (fr) * 1980-07-25 1982-01-29 Licentia Gmbh Procede et dispositif pour la condensation des vapeurs d'eau presentes a l'interieur de la cuve d'un lave-vaisselle
FR2517951A3 (fr) * 1981-12-14 1983-06-17 Zanussi A Spa Industrie Machine a laver automatique equipee d'un circuit hydraulique perfectionne d'alimentation
EP0219704A1 (de) * 1985-09-26 1987-04-29 INDUSTRIE ZANUSSI S.p.A. Geschirrspülmaschine mit Wasserenthärtungsanlage und Vorrichtung zum Programmieren davon
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
EP0570872A1 (de) * 1992-05-16 1993-11-24 AWECO Kunststofftechnik Gerätebau GmbH & Co. KG Wasserenthärter für Haushalts-Geschirrspülmaschinen

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004019330A1 (de) * 2003-12-22 2005-07-21 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einem System zur Wasserenthärtung
WO2006079500A1 (en) * 2005-01-27 2006-08-03 Elektra S.R.L. Method for controlling and managing the water flow to a coffee machine provided with a water softener device of ion exchange resin type, and coffee machine for implementing the method
CN101111179B (zh) * 2005-01-27 2011-03-09 埃莱克特拉有限公司 用于控制和管理通向具有离子交换树脂型水软化器装置的咖啡机的水流的方法以及用于实施该方法的咖啡机
US8100049B2 (en) 2005-01-27 2012-01-24 Elektra S.R.L. Method for controlling and managing the water flow to a coffee machine provided with a water softener device of ion exchange resin type, and coffee machine for implementing the method
WO2006134338A1 (en) * 2005-06-13 2006-12-21 Reckitt Benckiser (Uk) Limited Device for providing a relatively constant rate of dissolution of a solid article within it
AU2006258839B2 (en) * 2005-06-13 2011-03-03 Reckitt Benckiser (Uk) Limited Device for providing a relatively constant rate of dissolution of a solid article within it
US8142731B2 (en) 2005-06-13 2012-03-27 Reckitt Benckiser (Uk) Limited Device for providing a relatively constant rate of dissolution of a solid article within it
AU2014375412B2 (en) * 2013-12-30 2019-01-31 Electrolux Appliances Aktiebolag Laundry washing machine and method for controlling a laundry washing machine
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
CN105849334A (zh) * 2013-12-30 2016-08-10 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
WO2015101425A1 (en) * 2013-12-30 2015-07-09 Electrolux Appliances Aktiebolag Laundry washing machine and method for controlling a laundry washing machine
AU2014375413B2 (en) * 2013-12-30 2019-11-21 Electrolux Appliances Aktiebolag Laundry washing machine 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
WO2015101424A1 (en) * 2013-12-30 2015-07-09 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
CN110693431A (zh) * 2018-07-09 2020-01-17 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
CN110693432A (zh) * 2018-07-09 2020-01-17 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
CN110693433A (zh) * 2018-07-09 2020-01-17 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
CN110693433B (zh) * 2018-07-09 2023-04-18 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
CN110693431B (zh) * 2018-07-09 2023-04-18 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
CN110693432B (zh) * 2018-07-09 2023-04-18 青岛海尔洗碗机有限公司 一种洗碗机的软化装置、控制方法及洗碗机
IT202100003668A1 (it) * 2021-02-17 2022-08-17 Bitron Spa Sistema di alimentazione e trattamento dell’acqua per elettrodomestici atto ad operare a pressione atmosferica e relativo elettrodomestico.
EP4046561A1 (de) * 2021-02-17 2022-08-24 Bitron S.p.A. Wasseraufbereitungssystem für haushaltsgeräte, eingerichtet um bei atmosphärischem druck zu arbeiten und das entsprechende haushaltsgerät

Also Published As

Publication number Publication date
DE69606230D1 (de) 2000-02-24
DE19522140C3 (de) 2000-06-15
EP0749720B1 (de) 2000-01-19
DE19522140A1 (de) 1997-01-02
DE19522140C2 (de) 1998-08-13
DE69606230T2 (de) 2000-07-13

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