EP1593335B1 - Méthode de détection de défaut d'un dispositif de mesure de la quantité d'eau dans un lave-vaisselle - Google Patents

Méthode de détection de défaut d'un dispositif de mesure de la quantité d'eau dans un lave-vaisselle Download PDF

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Publication number
EP1593335B1
EP1593335B1 EP05007847A EP05007847A EP1593335B1 EP 1593335 B1 EP1593335 B1 EP 1593335B1 EP 05007847 A EP05007847 A EP 05007847A EP 05007847 A EP05007847 A EP 05007847A EP 1593335 B1 EP1593335 B1 EP 1593335B1
Authority
EP
European Patent Office
Prior art keywords
level
washing chamber
preset
measuring device
water
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.)
Not-in-force
Application number
EP05007847A
Other languages
German (de)
English (en)
Other versions
EP1593335A3 (fr
EP1593335A2 (fr
Inventor
Markus Hellweg
Stephan Lange
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL05007847T priority Critical patent/PL1593335T3/pl
Publication of EP1593335A2 publication Critical patent/EP1593335A2/fr
Publication of EP1593335A3 publication Critical patent/EP1593335A3/fr
Application granted granted Critical
Publication of EP1593335B1 publication Critical patent/EP1593335B1/fr
Not-in-force 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
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • 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
    • A47L2401/09—Water level
    • 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
    • A47L2501/01—Water supply, e.g. opening or closure of the water inlet valve
    • 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
    • A47L2501/02—Water discharge, e.g. opening or closure of discharge valve
    • 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
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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
    • A47L2501/26—Indication or alarm to the controlling device or to the user

Definitions

  • the invention relates to a method for detecting a fault of a measuring device for detecting the accumulated amount of water in the washing container of a program-controlled dishwasher with a circulation pump, with a sensor for detecting a necessary for the stable operation of the circulating pump minimum level N min , and with an evaluation circuit for processing the signals received by the measuring device and the level sensor, and with a device for limiting the volume flow flowing into the washing container.
  • the water inlet quantity is regulated by a so-called baffle plate in the solenoid valve. From a water pressure of 1 bar, this limits the flow rate to approx. 5 liters per minute (depending on the opening cross-section).
  • the quantity-controlled water supply can be superimposed for safety by a time control. Additional safety can be achieved by a second level sensor, which detects the reaching of an overflow level and then closes the solenoid valve via an integrated in the control evaluation circuit.
  • a disadvantage of the baffle plate is that it only works at a water pressure of 1 bar. At lower pressure conditions in the water supply and the same defect of the impeller counter, the latter can not be detected and it flows a quantity of water in the washing container, which is too high and thus has an increased water consumption and at worst the overrun of the machine result.
  • the DE 101 15 101 C1 shows a method for detecting / correcting the filling water amount of a washing machine, wherein both filling time, and filling level and filling water quantity are detected. It is not specified how the filling water quantity is detected.
  • the DE 33 29 345 A1 also describes a method of measuring amounts of water, wherein the flow rate of the water inlet is determined by determining the time to inflow a reference amount of water (which is detected by a level sensor).
  • the invention thus presents the problem to disclose a method of the type mentioned, in which an error in the measuring device for detecting the accumulated amount of water is detected, which does not result in their complete failure.
  • the dishwashing machine suitable for carrying out the method has, in a known manner, a housing in which a washing container, which can be closed at the front by a door, is arranged with a drain pan.
  • the door is pivotally mounted on its bottom-side portion about a horizontally extending axis on the device body.
  • crockery baskets are available, which are associated with spray arms for cleaning the parked dishes.
  • the supply of the spray arm with rinsing liquid via a circulation pump.
  • water is supplied to the washing at the beginning of various program sections via a supply line, at the end of this program sections, the emptying of the drain pan via a drain pump.
  • the adjustment of the individual wash programs is made possible for the user by various operating and display elements, the execution of these programs is controlled by a program control device, whereby preferably a microprocessor control is used.
  • the supply line can be opened by means of a solenoid valve by supplying power from the microprocessor control, in the de-energized state, the solenoid valve and thus the supply line is closed.
  • a timer runs in the microprocessor control and measures the time during which power is supplied. This time is referred to below as filling time t.
  • In the supply line is also arranged as a measuring device for detecting the accumulated amount of water an impeller. This gives pulses to the microprocessor control, the number of which are proportional to the volume flow passing through the line, so that the control of the number of pulses with a known cross-section can determine the amount of water introduced, hereinafter referred to as V i .
  • the drain pan is associated with a level sensor, with which a so-called minimum level N min can be detected, which is required for a stable running of the circulating pump.
  • the level sensor may be designed as a pressure switch, which is arranged in the line behind the circulation pump and is actuated when pumping water. Alternatively, the speed or other control parameters of the circulation pump can be evaluated, since these change depending on the level.
  • the measured variables of the timer, the vane counter and the output of the level sensor are processed in the microprocessor control by an integrated evaluation circuit in order to detect an error in the detection of the amount of accumulated water in the washing.
  • the solenoid valve is opened until the impeller counter has sensed a predetermined amount of water V 1 , for example 1 liter. As described above, the filling time t required for this water inlet is measured. If the filling time is below a predetermined minimum time t N , the evaluation circuit detects that there is neither a defect in the impeller counter nor too low a line pressure below 1 bar. There then takes place a quantity-controlled filling of the washing container, whereby a time control is superimposed for the purpose of securing.
  • a second filling step is performed.
  • the solenoid valve is opened until a subset has run into the washing, which is identified by the impeller or the microprocessor control as a predetermined amount V 2 .
  • This quantity V 2 of about one liter corresponds to a level which is below the minimum level N min .
  • the circulation pump is switched on for level detection. If the pressure switch switches stable, ie over a longer period of time, then the evaluation circuit recognizes that the amount of water actually in the rinsing tank is greater than that sensed by the vane wheel meter and thus the measurement result is definitely wrong.
  • the running program is aborted and an error message is generated. If the pressure switch only switches shortly after switching on the circulation pump, the evaluation circuit detects that the impeller counter is intact and only the line pressure is below 1 bar. Then the program is continued and volume controlled filled the necessary to carry out the set program amount of water in the washing.
  • a memory may be provided in the microprocessor control, in which the time required in the first filling step for filling the amount V 1 is stored. A renewed check only takes place if the respectively measured time t for the current filling step exceeds the stored value by a predetermined percentage of, for example, 15%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Claims (2)

  1. Procédé de détection d'un défaut d'un dispositif de mesure de la quantité d'eau chargée dans la cuve de lavage d'un lave-vaisselle commandé par programme avec une pompe de circulation, avec un capteur pour saisir un niveau minimum Nmin nécessaire pour le fonctionnement stable de la pompe de circulation, avec un circuit d'évaluation pour traiter les signaux reçus du dispositif de mesure et du capteur de niveau, et avec un dispositif pour limiter le débit volumique arrivant dans la cuve de lavage,
    lequel procédé comprend les étapes suivantes :
    • exécution d'une première étape de remplissage, dans laquelle une quantité partielle, qui est identifiée par le dispositif de mesure comme quantité prédéfinie V1, est amenée à la cuve de lavage ;
    • comparaison par le circuit d'évaluation du temps de remplissage t nécessaire pour la première étape de remplissage avec un temps minimum tN prédéfini ;
    si le temps de remplissage t dépasse le temps minimum tN prédéfini, les étapes de procédé suivantes sont exécutées :
    • vidange de la cuve de lavage ;
    • exécution d'une deuxième étape de remplissage, dans laquelle une quantité partielle, qui est identifiée par le dispositif de mesure comme quantité prédéfinie V2, est amenée à la cuve de lavage, la quantité prédéfinie V2 correspondant à un niveau qui se situe au-dessous du niveau minimum Nmin ;
    • émission d'un signal de défaut par le circuit d'évaluation si le capteur de niveau saisit un niveau de remplissage de la cuve de lavage se situant au-dessus du niveau minimum Nmin.
  2. Procédé selon la revendication 1,
    caractérisé en ce
    qu'avant la vidange de la cuve de lavage a lieu une phase intermédiaire au cours de laquelle les étapes de procédé suivantes sont exécutées :
    • une quantité partielle, qui est identifiée par le dispositif de mesure comme quantité prédéfinie V3, est amenée à la cuve de lavage, la somme des quantités V1 et V3 correspondant de préférence à un niveau qui se situe au-dessus du niveau minimum Nmin ;
    • mise en marche de la pompe de circulation pendant un temps tu prédéfini.
EP05007847A 2004-05-05 2005-04-11 Méthode de détection de défaut d'un dispositif de mesure de la quantité d'eau dans un lave-vaisselle Not-in-force EP1593335B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05007847T PL1593335T3 (pl) 2004-05-05 2005-04-11 Sposób rozpoznawania uszkodzenia urządzenia do mierzenia ilości wody dopływającej do zmywarki do naczyń

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004022682A DE102004022682B3 (de) 2004-05-05 2004-05-05 Verfahren zum Erkennen eines Fehlers einer Messeinrichtung zur Wassermengen-Erfassung bei Geschirrspülmaschinen
DE102004022682 2004-05-05

Publications (3)

Publication Number Publication Date
EP1593335A2 EP1593335A2 (fr) 2005-11-09
EP1593335A3 EP1593335A3 (fr) 2006-11-29
EP1593335B1 true EP1593335B1 (fr) 2008-03-26

Family

ID=34934961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05007847A Not-in-force EP1593335B1 (fr) 2004-05-05 2005-04-11 Méthode de détection de défaut d'un dispositif de mesure de la quantité d'eau dans un lave-vaisselle

Country Status (5)

Country Link
EP (1) EP1593335B1 (fr)
AT (1) ATE390076T1 (fr)
DE (2) DE102004022682B3 (fr)
ES (1) ES2300893T3 (fr)
PL (1) PL1593335T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008021371B3 (de) * 2008-04-29 2010-01-07 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Steuern eines Füllvorgangs eines wasserführenden Haushaltsgeräts

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007041305B4 (de) * 2007-08-31 2016-09-15 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät
DE102007052085A1 (de) * 2007-10-31 2009-05-07 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben eines wasserführendes Haushaltsgeräts
DE102011003953A1 (de) * 2011-02-10 2012-08-16 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer Rundlaufüberwachungseinheit und Verfahren zum Betrieb derselben
KR20120128359A (ko) * 2011-05-17 2012-11-27 주식회사 대우일렉트로닉스 세탁기의 수위측정오류 검출장치 및 검출방법
FR2993166B1 (fr) * 2012-07-12 2015-01-09 Fagorbrandt Sas Procede de commande en fonctionnement d'une machine a laver et machine a laver associee
PL2916708T3 (pl) 2012-11-08 2020-06-15 Electrolux Home Products Corporation N.V. Wykrywanie zablokowania filtra
WO2014071980A1 (fr) 2012-11-08 2014-05-15 Electrolux Home Products Corporation N. V. Détection d'un mode de fonctionnement d'un lave-vaisselle
US10595703B2 (en) 2015-11-10 2020-03-24 Electrolux Appliances Aktiebolag Method of determining whether process water is present in a circulation pump of an appliance for washing and rinsing goods, and appliance and computer program therewith
PL3379991T3 (pl) 2015-11-25 2020-01-31 Electrolux Appliances Aktiebolag Ustalenie czy woda procesowa została dodana do zbiornika ściekowego urządzenia do mycia i płukania dóbr podczas przerwy w działaniu urządzenia
BR112018015642A2 (pt) 2016-02-15 2018-12-26 Electrolux Appliances Aktiebolag método para detectar uma alteração na vazão de água, aparelho para lavar e enxaguar utensílios, programa de computador e produto de programa de computador
WO2018153472A1 (fr) 2017-02-24 2018-08-30 Electrolux Appliances Aktiebolag Lave-vaisselle, procédé et système de commande pour gérer un état d'obstruction

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
DE3146566C2 (de) * 1981-11-24 1988-10-20 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum Überwachen der Funktionstüchtigkeit von an ein elektronisches Steuergerät angeschlossenen Arbeitsorganen und Meßwertgebern in einem Haushaltgerät
DE3329345A1 (de) * 1983-08-13 1985-02-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur messung von wassermengen
US4697293A (en) * 1985-12-31 1987-10-06 Whirlpool Corporation Pressure sensing automatic water level control
DE4038802A1 (de) * 1990-12-05 1992-06-11 Bosch Siemens Hausgeraete Steuerung fuer ein elektrisches hausgeraet
DE10002687A1 (de) * 2000-01-22 2001-07-26 Aeg Hausgeraete Gmbh Wasserführendes Haushaltsgerät und Verfahren zum Entleeren eines Arbeitsbehälters desselben
DE10115101C1 (de) * 2001-03-27 2003-01-30 Diehl Ako Stiftung Gmbh & Co Verfahren zum Ausgleichen des Ansprechfehlers einer Füllstands-Druckdose in einer Waschmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008021371B3 (de) * 2008-04-29 2010-01-07 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Steuern eines Füllvorgangs eines wasserführenden Haushaltsgeräts

Also Published As

Publication number Publication date
DE502005003411D1 (de) 2008-05-08
ES2300893T3 (es) 2008-06-16
EP1593335A3 (fr) 2006-11-29
PL1593335T3 (pl) 2008-06-30
EP1593335A2 (fr) 2005-11-09
ATE390076T1 (de) 2008-04-15
DE102004022682B3 (de) 2006-03-02

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