EP1188409B1 - Procédé de dosage d'un agent de rinçage dans un lave-vaisselle - Google Patents

Procédé de dosage d'un agent de rinçage dans un lave-vaisselle Download PDF

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Publication number
EP1188409B1
EP1188409B1 EP01118818A EP01118818A EP1188409B1 EP 1188409 B1 EP1188409 B1 EP 1188409B1 EP 01118818 A EP01118818 A EP 01118818A EP 01118818 A EP01118818 A EP 01118818A EP 1188409 B1 EP1188409 B1 EP 1188409B1
Authority
EP
European Patent Office
Prior art keywords
clear rinse
setpoint
clear
supply
actual value
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
EP01118818A
Other languages
German (de)
English (en)
Other versions
EP1188409A2 (fr
EP1188409A3 (fr
Inventor
Clemens Jung
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 Corp
Original Assignee
Whirlpool Corp
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
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Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP1188409A2 publication Critical patent/EP1188409A2/fr
Publication of EP1188409A3 publication Critical patent/EP1188409A3/fr
Application granted granted Critical
Publication of EP1188409B1 publication Critical patent/EP1188409B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0055—Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/07—Consumable products, e.g. detergent, rinse aids or salt

Definitions

  • the invention concerns a method for the dosed supply of clear rinse in the rinsing cycle to the clear rinse bath in the tub of a dishwasher where the foam concentration of the clear rinse bath is monitored with an optical sensor.
  • optical sensors are used in dishwashers to monitor the tub content for water, turbidity, air and foam to correspondingly influence the dishwasher program.
  • the program is continued or changed depending on the various contents of the tub.
  • EP-A-1029962 discloses a method of optimising the operating cycle of a dishwasher which comprises a step of measuring the quantity of water remaining in the compartment after a drainage operation of the end of the wash cycle.
  • the washing program includes several cleaning and rinsing cycles that are terminated with a clear rinse cycle.
  • the cleaned dishes in the tub are supplied with a clear rinse bath containing clear rinse.
  • the customer sets the dose to give a general amount of clear rinse. This frequently causes an overdose and the unnecessary use of clear rinse. In addition, when the dose is insufficient, the desired clear rinse effect is frequently not attained. Manually dosing the clear rinse does not take into account the quality of the clear rinse. This can produce a high foam concentration which lowers the pump pressure and increases noise.
  • the problem of the invention is to improve the method as cited above to easily prevent overdosing the clear rinse in the clear rinse cycle, and allow the quality of the clear rinse to be automatically evaluated when dosing.
  • This problem is solved according to the invention by providing a setpoint for the foam concentration in the clear rinse bath for the dosed supply of clear rinse, using the optical sensor to compare the actual value of the foam concentration in the clear rinse bath with the given setpoint during the clear rinse cycle, and supplying clear rinse continuously or at intervals to the clear rinse bath until the determined actual value corresponds to the given setpoint.
  • the existing optical sensor is used in a simple matter to automatically dose the clear rinse during the clear rinse cycle. Since a setpoint is given for the foam concentration, overdosing is prevented, and the quality of the clear rinse, i.e. the increased foam, is automatically taken into account. As is known, poor-quality clear rinses produce more foam; hence the supply of clear rinse is automatically reduced when the given setpoint for the foam concentration is reached. A dosing mechanism is not necessary since the supply of clear rinse during the clear rinse cycle only has to be released or blocked, and it is stopped when the setpoint is reached by the actual value of the foam concentration.
  • the foam concentration setpoint can be manually fixed by the user or by the machine manufacturer in the program.
  • a feed amount of clear rinse or a feed time for the supply of clear rinse is set for the comparison of the actual value and setpoint and the supply of clear rinse is interrupted and a display shows "Add clear rinse” when the actual value does not reach the given setpoint, in such case the monitoring circuit in the clear rinse container of the dishwasher can be abandoned since the "Add clear rinse” display is taken over by the automatic foam concentration monitoring system. If the actual value does not reach the given setpoint, it is an indication that more clear rinse is required.
  • the "Add clear rinse" display is triggered by a comparator circuit that is active while the clear rinse is being supplied until the setpoint is reached and is only shut off when the actual value reaches the given setpoint, the display indicates the end of the supply of clear rinse. When the display shuts off, the user sees that the supply of clear rinse has properly terminated and that the given setpoint is attained.
  • the dishes to be washed are placed in a tub 13.
  • a program control controls the washing and rinsing cycles by supplying, heating and draining the washing and rinsing bath in a familiar matter which will therefore not be described in detail.
  • a clear rinse cycle starts in which the tub 13 is fed clear rinse bath and clear rinse.
  • the tub 13 has an optical sensor 14 that monitors the foam concentration in the clear rinse bath and sends a corresponding actual value T act to a comparator circuit 11.
  • a setpoint T set for the foam concentration can be entered manually by the user into an input device 10, or the manufacturer can set it in the program.
  • the comparator circuit 11 emits an output signal A1 that communicates the ongoing supply of clear rinse as long as the actual value T act has not reach the setpoint T set .
  • the output signal A1 is terminated. This is a recognisable indication of the terminated proper supply of clear rinse.
  • the supply of clear rinse can be continuous or in intervals, and the supply only has to be released or blocked.
  • the comparator circuit 11 controls a clear rinse dispensing device 12 from which the clear rinse is sent to the tub 13.
  • a time can be set for the clear rinse supply during which the actual value T act can reach the given setpoint T set . If this does not occur, it can be deduced that the clear rinse dispensing device 12 does not have any more clear rinse required for the supply. The display then remains on beyond the given time and shows that more clear rinse is needed.
  • a specific quantity of clear rinse can be set for the clear rinse cycle, however. If this is not sufficient to reach the set foam concentration, the output signal A1 can also show that more clear rinse is needed.
  • the automatic supply of clear rinse limits the amount of clear rinse to the required amount and also saves clear rinse.
  • the level of the clear rinse container does not have to be monitored to indicate that clear rinse is needed. Beyond the optical sensor that is already used to control the program, only a slight amount of additional control is required for the automatic, dosed supply of clear rinse.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (4)

  1. Procédé d'alimentation dosée d'un agent de rinçage au bain de liquide de rinçage dans une cuve de lave-vaisselle pendant le cycle de rinçage, moyennant quoi un capteur optique contrôle la concentration de mousse du bain de l'agent de rinçage,
    caractérisé en ce que
    un point de consigne (Tset) est donné pour l'alimentation dosée d'agent de rinçage pour la concentration de mousse dans le bain d'agent de rinçage ;
    moyennant quoi la valeur réelle (Tact) de la concentration de mousse dans le bain d'agent de rinçage mesurée par le capteur optique (14) pendant le cycle de rinçage est comparée au point de consigne donné (Tset) ;
    et moyennant quoi l'agent de rinçage est fourni au bain de rinçage de manière continue ou par intervalles jusqu'à ce que la valeur réelle mesurée (Tact) corresponde au point de consigne donné (Tset).
  2. Procédé selon la revendication 1, caractérisé en ce que le point de consigne (Tset) est réglé manuellement par l'utilisateur, ou est réglé dans le programme par le fabricant de la machine.
  3. Procédé selon la revendication 1 ou 2 caractérisé en ce que, pour la comparaison de la valeur réelle (Tact) au point de consigne (Tset), une quantité d'agent de rinçage fourni ou un temps d'alimentation pour l'alimentation de l'agent de rinçage est établi, et moyennant quoi l'alimentation de l'agent de rinçage est interrompue et « Ajouter agent de rinçage » est affiché quand la valeur réelle (Tact) n'atteint pas le point de consigne donné (Tset).
  4. Procédé selon l'une quelconque des revendications 1-3, caractérisé en ce que l'écran « Ajouter agent de rinçage » est déclenché par un circuit comparateur (11) qui est actif pendant que l'agent de rinçage est alimenté jusqu'à ce que la valeur réelle (Tact) atteigne le point de consigne (Tset) et n'est terminé que lorsque le point de consigne donné (Tset) est atteint.
EP01118818A 2000-09-13 2001-08-10 Procédé de dosage d'un agent de rinçage dans un lave-vaisselle Expired - Lifetime EP1188409B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10045151 2000-09-13
DE10045151A DE10045151C2 (de) 2000-09-13 2000-09-13 Verfahren zur Zufuhr von Klarspülmittel bei einer Geschirrspülmaschine

Publications (3)

Publication Number Publication Date
EP1188409A2 EP1188409A2 (fr) 2002-03-20
EP1188409A3 EP1188409A3 (fr) 2003-04-02
EP1188409B1 true EP1188409B1 (fr) 2007-03-07

Family

ID=7655977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01118818A Expired - Lifetime EP1188409B1 (fr) 2000-09-13 2001-08-10 Procédé de dosage d'un agent de rinçage dans un lave-vaisselle

Country Status (3)

Country Link
EP (1) EP1188409B1 (fr)
DE (2) DE10045151C2 (fr)
ES (1) ES2281390T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10238303A1 (de) 2002-08-21 2004-03-04 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Anpassen eines Spülprogramms in einer Geschirrspülmaschine und Geschirrspülmaschine
DE10238304A1 (de) * 2002-08-21 2004-02-26 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Anpassen eines Spülprogramms in einer Geschirrspülmaschine und Geschirrspülmaschine
DE102004035718A1 (de) 2004-07-23 2006-04-13 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Zufuhr von Klarspülmittel bei einer programmgesteuerten Geschirrspülmaschine
DE102005061807A1 (de) * 2005-12-23 2007-06-28 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine für Niedertemperatur-Klarspülmittel
DE102005061806A1 (de) * 2005-12-23 2007-06-28 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine für Niedertemperatur-Klarspülmittel
EP2082677A1 (fr) * 2008-01-18 2009-07-29 Electrolux Home Products Corporation N.V. Processus de fonctionnement d'un lave vaisselle et lave vaisselle fonctionnant selon un tel procédé
DE102013203933B4 (de) * 2013-03-07 2022-11-03 Meiko Maschinenbau Gmbh & Co. Kg Reinigungsvorrichtung und Verfahren zur Reinigung von Reinigungsgut

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3440848A1 (de) * 1984-11-08 1986-05-22 Hans 8900 Augsburg Biermaier Verfahren und vorrichtung zum regeln der schaumbildung bei tank-waschmaschinen, insbesondere desinfektions-spuelmaschinen
US5443655A (en) * 1994-04-13 1995-08-22 Premark Feg Corporation Method for adjusting the rinse cycle of a warewasher
US5669983A (en) * 1995-06-08 1997-09-23 Maytag Corporation Enhanced cycles for an automatic appliance
DE29611091U1 (de) * 1996-06-25 1997-10-23 AEG Hausgeräte GmbH, 90429 Nürnberg Flüssigkeitsführendes Hausgerät mit einer Programmsteuerung
KR0176685B1 (ko) * 1996-11-19 1999-10-01 삼성전자주식회사 식기세척기 및 이를 이용한 과일세척방법
DE19720820A1 (de) * 1997-05-16 1998-11-19 Aweco Kunststofftech Geraete Verfahren und Dosiervorrichtung zum Betrieb einer Haushalts-Geschirrspülmaschine
DE19831688C1 (de) * 1998-07-15 2000-04-06 Whirlpool Co Optischer Sensor
DE19831687A1 (de) * 1998-07-15 2000-01-20 Whirlpool Co Verfahren zum Betreiben einer Geschirrspülmaschine mit Programmsteuerung
DE19857413A1 (de) * 1998-12-12 2000-06-21 Whirlpool Co Verfahren zum Reinigen von Geschirr in einer Geschirrspülmaschine
FR2789568B1 (fr) * 1999-02-16 2001-05-04 Esswein Sa Procede d'optimisation du cycle de fonctionnement d'un appareil electromenager lavant et appareil utilisant ce procede

Also Published As

Publication number Publication date
ES2281390T3 (es) 2007-10-01
DE60127054T2 (de) 2007-07-05
DE60127054D1 (de) 2007-04-19
DE10045151C2 (de) 2002-09-26
DE10045151A1 (de) 2002-03-28
EP1188409A2 (fr) 2002-03-20
EP1188409A3 (fr) 2003-04-02

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