EP0405086B1 - Procédé d'exploitation d'un lave-vaisselle commandé par un programmateur - Google Patents

Procédé d'exploitation d'un lave-vaisselle commandé par un programmateur Download PDF

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Publication number
EP0405086B1
EP0405086B1 EP90107765A EP90107765A EP0405086B1 EP 0405086 B1 EP0405086 B1 EP 0405086B1 EP 90107765 A EP90107765 A EP 90107765A EP 90107765 A EP90107765 A EP 90107765A EP 0405086 B1 EP0405086 B1 EP 0405086B1
Authority
EP
European Patent Office
Prior art keywords
program
ion exchanger
sub
water
cleaning
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.)
Expired - Lifetime
Application number
EP90107765A
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German (de)
English (en)
Other versions
EP0405086A1 (fr
Inventor
Rüdiger Dipl.-Ing. Eiermann (FH)
Wolfgang Dipl.-Ing. Steck
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
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Individual
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Publication date
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Publication of EP0405086A1 publication Critical patent/EP0405086A1/fr
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Classifications

    • 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

Definitions

  • the invention relates to a method for operating a program-controlled dishwasher, with a softening device consisting of an ion exchanger, a salt reservoir and a regeneration water reservoir, the dishwasher with from the sub-programs - pre-rinsing, cleaning, rinsing, rinsing, drying, adding a brine quantity Regeneration of the ion exchanger and addition of an amount of backwash water to rinse out the exchanged hardness formers from the regenerated ion exchanger - selectable wash programs can be operated.
  • a method and a program-controlled dishwasher of the type mentioned above is known from DE-OS 33 16 685, the sub-program adding a brine quantity for regenerating the ion exchanger being carried out during the drying sub-program and the sub-program adding a backwashing water quantity for rinsing out the exchanged hardness formers from the regenerated one Ion exchanger is carried out at the beginning of the program of a subsequent next rinsing program.
  • a method for operating a program-controlled dishwasher in which only the water for the sub-program final rinsing of a washing program is softened to enable the use of an ion exchanger with a particularly small exchange capacity in dishwashers.
  • This ion exchanger is rinsed according to the method described before each rinse sub-program, namely before, during or after the rinse sub-program.
  • FR-A-23 25 348 describes a method of the type mentioned at the outset for operating a program-controlled dishwasher, the sub-program adding a brine quantity for regenerating the ion exchanger being provided between the sub-program intermediate rinsing and the sub-program rinsing.
  • the sub-program adding a brine quantity to regenerate the ion exchanger and the sub-program adding a backwashing water quantity to rinse out the exchanged hardness formers from the regenerated ion exchanger is carried out and then a second part of the sub-program is carried out between rinsing .
  • the rinse aid sub-program is then carried out.
  • the amount of water to be filled in in the intermediate rinse program should be increased by a corresponding amount of water in the publications mentioned. This means an extension of the program and an unnecessary increase in water consumption.
  • the invention has for its object to be able to use water with the lowest water hardness in a method of the type mentioned for the rinse-aid sub-program without increased water consumption.
  • This object is achieved in that the sub-program adding a brine quantity to regenerate the ion exchanger is carried out in the sub-program cleaning and then the sub-program adding a quantity of backwash water for rinsing out the exchanged hardness formers from the regenerated ion exchanger follows the sub-program cleaning with this sub-program Brine quantity flowing out of the ion exchanger is stored in a storage container and is discharged at the end of the cleaning sub-program or directly after the cleaning sub-program bypassing the ion exchanger.
  • the invention is based on the knowledge that the best softening result is achieved with a freshly regenerated ion exchanger after sufficient backwashing water has been added.
  • the amount of backwashing water added in the sub-program adding a backwashing water to rinse out the exchanged hardness formers from the regenerated ion exchanger is usually limited to a small amount of water to avoid an extension of the program execution time and unnecessary water consumption, which only the majority of the hardness formulators wash out from the ion exchanger.
  • This rinsing of the ion exchanger is then continued in a subsequent sub-program without addition of detergent in order to avoid dilution of the detergent by brine components which may have been rinsed out.
  • water softened by the ion exchanger is also used to improve the cleaning result, in particular when a cleaner is added.
  • this is the case the degree of hardness of the water used is not of decisive importance as for the rinse sub-program.
  • the sub-program adding a brine quantity for regenerating the ion exchanger and the sub-program adding a backwashing water quantity for rinsing out the exchanged hardness formers from the regenerated ion exchanger in the sub-program intermediate rinsing FR-A-23 25 348 is carried out between two sections of the intermediate rinsing sub-program, which leads to the abovementioned disadvantages, in particular in an increased water consumption, to the complete rinsing out of the exchanged hardness formers.
  • the rinsing of the ion exchanger is practically continued in the intermediate rinsing sub-program with the entire amount of water used for the intermediate rinsing, with the result that an additional amount of water is not required to completely rinse out the exchanged hardness agents.
  • a direct discharge of the amount of brine flowing from the ion exchanger during cleaning causes the cleaning agent used for cleaning to dilute and a repeated passage through the ion exchanger leads to its back soiling, both of which are therefore avoided with the advantageous measure.
  • the sub-program adding a brine quantity for regenerating the ion exchanger is carried out at the end of the cleaning sub-program and the brine quantity flowing out of the ion exchanger is bypassed bypassing the storage container.
  • the amount of brine flowing out of the ion exchanger is stored in the filling container.
  • the filling container is empty after the start of the cleaning sub-program, it can be used to store the brine quantity. An additional container is thus avoided and the possibility is created without additional control means, e.g. Valves etc. bypassing the ion exchanger to derive the stored amount of brine.
  • the figure shows a program flow diagram.
  • the program sequence shown in the figure consists of the sub-programs prewashing, cleaning, intermediate rinsing, Rinsing, drying, adding an amount of brine to regenerate the ion exchanger and adding an amount of backwashing water to rinse out the exchanged hardness formers from the regenerated ion exchanger.
  • the program sequence diagram in the figure shows the periods of the functions of the components of the dishwasher that are essential for the program sequence, a control unit motor of a program control unit, a circulation pump, a drain pump, a regeneration valve, a filling valve and a heater in assigned columns, the division into Intervals shows the switching steps of the program control unit.
  • functional sequences the functions of the dishwasher are like marked as follows: F for filling the dishwasher with water by opening the inlet valve; U for circulating the water possibly mixed with a detergent or rinse aid through the circulating pump; H for heating the water by means of the heater; Reg.
  • t denotes the program time sequence.
  • T1 denotes the period for a first pre-rinse sub-program and t2 denotes the period for a second pre-rinse sub-program.
  • the cleaning sub-program takes place in the period t3.
  • the sub-program adding a brine quantity for regenerating the ion exchanger is carried out, in the figure with I and by means of a hatched field in the regeneration valve column, the time of initiation of the sub-program adding a brine quantity for regenerating the ion exchanger during the sub-program Clean and with II and by means of a filled-in field in the regeneration valve column the alternatively possible arrangement of the sub-program adding a brine quantity for regenerating the ion exchanger is shown at the end of the sub-program cleaning.
  • the amount of brine is stored in a storage container and discharged at the end of the cleaning sub-program to reduce the back contamination of the ion exchanger bypassing the ion exchanger.
  • the period of time of the sub-program following the sub-program cleaning is added by adding a quantity of backwash water for rinsing out the exchanged hardness formers from the regenerated ion exchanger.
  • the time period for the intermediate rinse program is specified with t5, the time period for rinse aid with t6.
  • the period for the drying sub-program is designated t7.
  • the rinse-aid sub-program is carried out after the intermediate rinse sub-program in which the backwashing of the ion exchanger has been completed, that is to say with the water softened from the regenerated ion exchanger to the lowest degree

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)

Claims (3)

  1. Procédé d'exploitation d'un lave-vaisselle commandé par programme comportant un dispositif d'adoucissement de l'eau composé d'un échangeur d'ions, d'un réservoir de stockage de sel et d'un réservoir de stockage d'eau de régénération, le lave-vaisselle pouvant être activé au moyen de programmes de lavage qui peuvent être sélectionnés à partir des sous-programmes - prélavage, lavage, rinçage intermédiaire, rinçage final, séchage, envoi de solution de sel pour la régénération de l'échangeur d'ions et envoi d'eau de rétro-lavage pour évacuer hors de l'échangeur d'ions régénéré les sels de dureté de l'eau, caractérisé par le fait que le sous-programme envoi de sel pour la régénération de l'échangeur d'ions se déroule au cours du sous-programme lavage et que le sous-programme envoi d'eau de rétro-lavage pour évacuer hors de l'échangeur d'ions régénéré les sels de dureté de l'eau a lieu à la suite dudit sous-programme de lavage complété par ce sous programme, la solution de sel sortant de l'échangeur d'ions étant stockée dans un réservoir et évacuée sans passer par l'échangeur d'ions à la fin du sous-programme de lavage ou immédiatement après le sous-programme de lavage.
  2. Procédé selon la revendication 1, caractérisé par le fait que le sous-programme envoi de sel pour régénérer l'échangeur d'ions se déroule à la fin du sous-programme de lavage et que la solution de sel sortant de l'échangeur d'ions est évacuée sans passer par le réservoir de stockage.
  3. Procédé selon la revendication 1, le lave-vaisselle étant pourvu d'un réservoir qui peut recevoir l'eau provenant de l'échangeur d'ions, caractérisé par le fait que la solution sortant de l'échangeur d'ions est stockée dans le réservoir.
EP90107765A 1989-06-29 1990-04-24 Procédé d'exploitation d'un lave-vaisselle commandé par un programmateur Expired - Lifetime EP0405086B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921422A DE3921422A1 (de) 1989-06-29 1989-06-29 Verfahren zum betrieb einer programmgesteuerten geschirrspuelmaschine
DE3921422 1989-06-29

Publications (2)

Publication Number Publication Date
EP0405086A1 EP0405086A1 (fr) 1991-01-02
EP0405086B1 true EP0405086B1 (fr) 1993-11-10

Family

ID=6383938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107765A Expired - Lifetime EP0405086B1 (fr) 1989-06-29 1990-04-24 Procédé d'exploitation d'un lave-vaisselle commandé par un programmateur

Country Status (4)

Country Link
EP (1) EP0405086B1 (fr)
DD (1) DD295977A5 (fr)
DE (2) DE3921422A1 (fr)
ES (1) ES2045623T3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125414A1 (de) * 1991-07-31 1993-02-04 Bosch Siemens Hausgeraete Verfahren zum betrieb einer programmgesteuerten geschirrspuelmaschine
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
GR1001227B (el) * 1992-04-20 1993-06-30 Dimitrios Pachopoulos Νεου τυπου πλυντηριο πιατων υψηλης αισθητικης και λειτουργικοτητας.
DE4233934C2 (de) * 1992-10-08 1996-02-29 Bosch Siemens Hausgeraete Vorrichtung zum Spülen von Spülgut
DE4233936C2 (de) * 1992-10-08 1996-02-01 Bosch Siemens Hausgeraete Verfahren zum Spülen von Spülgut
DE4238450C2 (de) * 1992-11-13 1995-11-16 Bosch Siemens Hausgeraete Programmgesteuerte Haushalt-Geschirrspülmaschine
DE4413432C1 (de) * 1994-04-18 1995-08-31 Bauknecht Hausgeraete Programmgesteuerte Geschirrspülmaschine
IT1288831B1 (it) * 1996-11-15 1998-09-24 Bitron Spa Dispositivo decalcificatore perfezionato
DE19903635A1 (de) * 1999-01-29 2000-08-10 Premark Feg Llc Kleinenthärter für Geschirrspülmaschine
DE19907074A1 (de) * 1999-02-19 2000-08-24 Bsh Bosch Siemens Hausgeraete Wasserführendes Haushaltgerät, insbesondere Haushalt-Geschirrspülmaschine
DE19940162A1 (de) * 1999-08-25 2001-03-01 Miele & Cie Verfahren zur Bereitstellung von Weichwasser zum Geschirrspülen bei einer programmgesteuerten Geschirrspülmaschine
DE19960307A1 (de) * 1999-12-14 2001-06-21 Bsh Bosch Siemens Hausgeraete Verfahren zum Betrieb einer programmgesteuerten Geschirrspülmaschine
EP1844692B1 (fr) 2006-04-12 2010-05-05 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Procédé pour supprimer l'eau chargée en sels pour lave-vaisselles
DE102009026904A1 (de) * 2009-06-10 2010-12-16 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer Enthärtungseinrichtung sowie zugehöriges Wartungsverfahren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2312126C2 (de) * 1973-03-10 1983-02-24 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Geschirrspülmaschine mit einem Spülbehälter und einem Ionenaustauscher zum Enthärten von Frischwasser
NL7609553A (nl) * 1975-09-24 1977-03-28 Zanussi A Spa Industrie Werkwijze voor het instellen van het arbeids- verloop van een vaatwasmachine.
IT1156468B (it) * 1982-05-07 1987-02-04 Indesit Macchina per lavare con procedimento perfezionato di rigenerazione delle resine
DE3316685C2 (de) * 1983-05-06 1985-11-07 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Haushalt-Geschirrspülmaschine
DE3732452A1 (de) * 1987-09-25 1989-04-20 Bosch Siemens Hausgeraete Programmgesteuerte haushalt-geschirrspuelmaschine

Also Published As

Publication number Publication date
DE59003411D1 (de) 1993-12-16
DD295977A5 (de) 1991-11-21
DE3921422C2 (fr) 1991-09-19
EP0405086A1 (fr) 1991-01-02
ES2045623T3 (es) 1994-01-16
DE3921422A1 (de) 1991-01-10

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