EP2413774B1 - Procédé pour faire fonctionner un appareil ménager à circulation d'eau - Google Patents

Procédé pour faire fonctionner un appareil ménager à circulation d'eau Download PDF

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Publication number
EP2413774B1
EP2413774B1 EP10709493.0A EP10709493A EP2413774B1 EP 2413774 B1 EP2413774 B1 EP 2413774B1 EP 10709493 A EP10709493 A EP 10709493A EP 2413774 B1 EP2413774 B1 EP 2413774B1
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EP
European Patent Office
Prior art keywords
water
household device
rotational speed
conducting household
level
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.)
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Application number
EP10709493.0A
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German (de)
English (en)
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EP2413774A2 (fr
Inventor
Michael Rosenbauer
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.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Priority to PL10709493T priority Critical patent/PL2413774T3/pl
Publication of EP2413774A2 publication Critical patent/EP2413774A2/fr
Application granted granted Critical
Publication of EP2413774B1 publication Critical patent/EP2413774B1/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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0047—Energy or water consumption, e.g. by saving energy or water
    • 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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • 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
    • A47L2401/08—Drain or recirculation pump parameters, e.g. pump rotational speed or current absorbed by the motor
    • 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

Definitions

  • the invention relates to a method for operating a water-conducting domestic appliance according to the preamble of claim 1.
  • Reduced water consumption is of great importance in water-bearing domestic appliances, such as a dishwasher.
  • a rinse is performed with a series of program steps with or without liquid insert.
  • the after a program step no longer required rinsing liquid is pumped out of the dishwasher by means of a drain pump.
  • fresh water is passed into the dishwasher.
  • a dishwasher is known, are detected in the emergency conditions during the flushing operation by monitoring the power consumption of the circulation pump.
  • exceptional conditions are, for example, a clogging of the filter or a blockade of the pump impeller of the circulation pump.
  • the speed or the direction of rotation of the circulation pump is changed.
  • the EP 0 255 863 A2 describes a method for operating a dishwasher, wherein in individual rinses a multi-course total rinse the degree of contamination of the rinsing liquid is determined and taken as a function of influence on the rinsing liquid. In order to achieve a reduction in the water and energy requirements and the program duration, after determining a minor degree of contamination at least one of the following complete Spülillonkeits grill or Operazzi remplissic is hidden in the Automatoireprogramm.
  • the object of the invention is to provide a method for operating a water-conducting household appliance, with which the water consumption can be reduced in a simple manner.
  • the invention is based on a method for operating a water-conducting domestic appliance, in particular a dishwasher, in which a Siebbelegungsgrad a switched in the hydraulic circuit of the household appliance filter system is detected.
  • the part of the rinsing liquid remaining in the water-conducting domestic appliance after partial pumping is applied to items to be cleaned.
  • the Siebbelegungsgrad the filter are detected. With only slight sieve occupancy, ie with only slightly contaminated rinsing liquid, therefore, the rinsing liquid used during the pre-rinsing step can be at least partially used in the subsequent cleaning step and thus the total water consumption can be reduced.
  • an additional amount of water is added to the remaining part of the rinsing liquid in the water-conducting household appliance in a filling step. That is, by a filling step, the water-carrying household appliance, e.g. increased so far that a minimum level for the operation of the water-bearing household appliance is achieved.
  • the Siebbelegungsgrad the filter system can be detected by a sensor device.
  • suitable sensors e.g. Ultrasonic sensors can be used, e.g. to detect a filter cake formation.
  • the sensor device may be designed for detecting the rotational speed and / or a power consumption of a motor which drives a circulating pump connected in the hydraulic circuit. Sizes such as e.g. Manipulated variables of a motor current controller and / or the frequency of an electronic commutation are detected.
  • the rotational speed and / or a power consumption of a circulating pump connected in the hydraulic circuit are detected to determine the level of screen loading. From a deviation of the detected speed or power consumption of a given characteristic can then be deduced in a simple manner on the Siebbelegungsgrad the filter system.
  • At least one speed curve of the circulating pump is evaluated to determine the degree of screen occupancy.
  • air is drawn from the circulating pump or the circulating pump partially idles.
  • the speed fluctuation of the circulation pump is therefore correspondingly large.
  • the speed fluctuation is minimal because of the circulating pump no air is drawn, but this works in normal circulation operation.
  • a measure of the speed fluctuations of the circulation pump is determined from the speed curve. Furthermore, it is provided in a development that the determined measure of speed fluctuations is compared with at least one predetermined limit value and is closed to a falling below the predetermined limit Siebbeschegungsgrads when the value for the determined measure of speed fluctuations is less than the predetermined limit value ,
  • the speed detection in the circulation pump is therefore not used to signal emergency conditions. Rather, the detected rotational speed of the circulation pump is based on a decision as to whether a partial pumping should take place during a liquid change or not.
  • the circulating pump is driven by means of a brushless DC motor.
  • a drive motor for the circulation pump e.g. an asynchronous motor or a synchronous motor can be used.
  • a synchronous motor is used.
  • Such a motor allows in a comparatively simple manner a detection of its speed solely by monitoring the time course of the electromotive force in the windings of the motor, that is, the currents or voltages occurring at the motor, so that costly, space-consuming sensors on the engine or The pump is not required to determine the speed.
  • a speed sensor is needed.
  • a brushless DC motor that is, a so-called BLDC motor
  • the induced back voltage for detecting the pump speed or for detecting the rotor position are used without separate sensors would have to be provided.
  • the rotational speed detection of the circulation pump can also take place on account of the phase shift of the force of the motor current applied to the pump motor.
  • a water-conducting household appliance in particular a dishwasher, at least comprising a hydraulic circuit with a filter system, the Siebbelegungsgrad is detectable, wherein from the water-bearing household appliance rinsing liquid is discharged, according to the invention when falling below a predetermined limit Siebbeschegungsgrades the rinsing liquid only partially dissipated from the household appliance.
  • Fig. 1 is an embodiment of a water-conducting household appliance, a dishwasher with a, a washing compartment delimiting washing container 1 shown schematically.
  • a washing compartment of the washing container In the washing compartment of the washing container 1, not to be cleaned, to be cleaned dishes in dish racks 3, 5 are arranged.
  • two spraying arms 7, 8 provided in different spraying levels are arranged by way of example, via which the items to be washed are supplied with washing liquid.
  • a pump pot 11 is provided with a coarsely indicated filter system in a known manner, which is formed from a flat fine filter 10 and a hollow cylindrical coarse filter 12. From the sump 11, a recirculation line 9 is guided away with circulating pump arranged therein.
  • the circulation line 9 is connected via leads 14, 15 and a switched therein Water switch 25 with the spray arms 7, 8 connected.
  • the circulation pump 13 is connected downstream of a heating element 21 as a water heater.
  • a fresh water supply line 16 and a drain line 17 is connected, in which a drain pump 18 is arranged for pumping out rinsing liquid from the washing.
  • Fig. 2 is a Spülprogrammablauf the dishwasher shown using a temperature-time diagram.
  • the program sequence has individual partial program steps with or without use of liquid, namely pre-rinsing V, cleaning R, intermediate rinsing Z, rinsing K and drying T.
  • the partial program steps of the rinse cycle are carried out by means of a control device 27 by corresponding activation of the respective device components, for example the drain pump 18 or the circulating pump 13.
  • the temperature-time profile refers to a mixing temperature in the washing compartment, which is set in the items to be washed, in the washing and possibly in the washing liquid.
  • the control device 27 is signal-wise connected via signal lines 26 to the circulation pump 13 and the drain pump 18 and other device components of the hydraulic circuit.
  • the pre-rinsing step V in which the controller 27, the water inlet valve 28 opens in the fresh water supply line 16, whereby fresh water enters the sump 11.
  • the rinsing liquid is pumped off by means of the drain pump 18.
  • the rotational speed of the circulation pump 13 is detected during the pre-purge step V and passed to the control device 27 via a signal line 29.
  • the control device 27 has an evaluation unit, which determines the screen occupancy level of the filter system 10, 12 from a deviation of the detected actual rotational speed from a predetermined characteristic.
  • the speed variation of the circulation pump 13 is detected during the pre-rinsing step V and compared with a predetermined speed fluctuation. This is based on the finding that at a large Siebbelegungsgrad the circulation pump 13 is partially idling or air pulls, causing correspondingly large speed fluctuations occur.
  • the circulating pump runs at a low level of sieve loading continuously without major fluctuations in speed.
  • the evaluation unit of the control device 27 during the pre-rinsing step V only a reduced actual Siebbelegungsgrad the filter system, that is, the actual Siebbelegungsgrad a predetermined GrenzSiebbelegungsgrad, so controls the controller 27, the drain pump 18 after execution of the pre-rinse step V so that only a partial pumping the rinsing liquid used takes place.
  • the non-pumped-off portion of the rinsing liquid remaining in the hydraulic circuit of the dishwasher is then used further in the subsequent rinsing step R. Accordingly, only a reduced amount of fresh water is required for the purification step R, which is, for example, refilled in a refilling step.
  • an intermediate rinsing step Z, a final rinse step K and a drying step T follow in a known manner.
  • a brushless DC motor with electronic commutation that is, a so-called BLDC motor is used in the present embodiment.
  • BLDC motor the reverse voltage or the position detection of the rotor, the counter-voltage or the back EMF is used in the simple way without the use of additional sensors, the speed is detected.
  • an additional speed sensor such as a Hall sensor, required.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Physical Water Treatments (AREA)

Claims (20)

  1. Procédé de fonctionnement d'un appareil ménager à circulation d'eau, notamment d'un lave-vaisselle, dans lequel un degré d'encrassement de filtre d'un système de filtrage (10 ,12) commuté dans le circuit hydraulique de l'appareil ménager est enregistré, caractérisé en ce que, suite à un enregistrement d'un dépassement négatif d'un degré limite prédéfini d'encrassement de filtre, du liquide de lavage est évacué seulement partiellement hors de l'appareil ménager.
  2. Procédé selon la revendication 1, caractérisé en ce qu'après l'évacuation partielle, la fraction du liquide de lavage restant dans l'appareil ménager à circulation d'eau est amenée sur des produits à laver.
  3. Procédé selon la revendication 2, caractérisé en ce que dans une étape de remplissage, une quantité supplémentaire d'eau est ajoutée à la fraction du liquide de lavage restant dans l'appareil ménager à circulation d'eau.
  4. Procédé selon au moins l'une quelconque des revendications 1 à 3, caractérisé en ce que le degré d'encrassement de filtre du système de filtrage (10, 12) est enregistré au moyen d'un dispositif de détection.
  5. Procédé selon la revendication 4, caractérisé en ce que pour déterminer le degré d'encrassement de filtre, la vitesse de rotation et/ou une absorption de puissance d'une pompe de circulation (13) commutée dans le circuit hydraulique sont enregistrées.
  6. Procédé selon la revendication 5, caractérisé en ce que pour déterminer le degré d'encrassement de filtre, au moins une allure de vitesse de rotation d'une pompe de circulation (13) est évaluée.
  7. Procédé selon la revendication 6, caractérisé en ce qu'une mesure pour les variations de la vitesse de rotation de la pompe de circulation (13) est déterminée à partir de l'allure de vitesse de rotation.
  8. Procédé selon la revendication 7, caractérisé en ce que la mesure déterminée pour les variations de la vitesse de rotation est comparée à au moins une valeur limite prédéfinie et en ce qu'on conclut un dépassement négatif du degré d'encrassement de filtre prédéfini, lorsque la valeur de la mesure déterminée pour les variations de vitesse de rotation est inférieure à la valeur limite prédéfinie.
  9. Procédé selon au moins l'une quelconque des revendications 1 à 8, caractérisé en ce que pour amener du liquide de lavage sur des produits à laver, une pompe de circulation (13) est entraînée au moyen d'un moteur à courant continu sans balai.
  10. Procédé selon la revendication 9, caractérisé en ce que pour déterminer la vitesse de rotation du moteur à courant continu sans balai, une contre-tension induite et/ou un décalage de phase entre la tension électrique appliquée sur le moteur à courant continu et celle du courant de moteur sont enregistrés.
  11. Appareil ménager à circulation d'eau, notamment lave-vaisselle, présentant au moins un circuit hydraulique muni d'un système de filtrage (10, 12) dont le degré d'encrassement de filtre est enregistrable, caractérisé en ce que suite à un enregistrement d'un dépassement négatif d'un degré limite prédéfini d'encrassement de filtre, du liquide de lavage peut être évacué seulement en partie hors de l'appareil ménager.
  12. Appareil ménager à circulation d'eau selon la revendication 11, caractérisé en ce que la fraction du liquide de lavage restant dans l'appareil ménager à circulation d'eau après la vidange partielle peut être amenée sur des produits à laver.
  13. Appareil ménager à circulation d'eau selon la revendication 12, caractérisé en ce que dans une étape de remplissage, une quantité supplémentaire d'eau peut être ajoutée à la fraction du liquide de lavage restant dans l'appareil ménager à circulation d'eau.
  14. Appareil ménager à circulation d'eau selon les revendications 11, 12 ou 13, caractérisé en ce qu'un dispositif de détection est ménagé pour enregistrer le degré d'encrassement de filtre du système de filtrage (10, 12).
  15. Appareil ménager à circulation d'eau selon la revendication 14, caractérisé en ce que pour déterminer le degré d'encrassement de filtre, la vitesse de rotation et/ou une absorption de puissance d'une pompe de circulation (13) commutée dans le circuit hydraulique peuvent être enregistrées.
  16. Appareil ménager à circulation d'eau selon la revendication 15, caractérisé en ce qu'un dispositif de commande (27) est ménagé, lequel est réalisé dans le but de déterminer le degré d'encrassement de filtre pour évaluer au moins une allure de vitesse de rotation de la pompe de circulation (13).
  17. Appareil ménager à circulation d'eau selon la revendication 16, caractérisé en ce que le dispositif de commande (27) est réalisé pour déterminer une mesure pour des variations de vitesse de rotation de la pompe de circulation (13) à partir de l'allure de la vitesse de rotation.
  18. Appareil ménager à circulation d'eau selon la revendication 17, caractérisé en ce que le dispositif de commande (27) est réalisé pour comparer la mesure déterminée pour les variations de vitesse de rotation à au moins une valeur limite prédéfinie et en ce que l'on puisse conclure un dépassement négatif du degré limite d'encrassement de filtre prédéfini, lorsque la valeur de la mesure déterminée pour les variations de vitesse de rotation est inférieure à la valeur limite prédéfinie.
  19. Appareil ménager à circulation d'eau selon au moins l'une quelconque des revendications 11 à 18, caractérisé en ce qu'un moteur à courant continu sans balai est ménagé pour l'entraînement de la pompe de circulation (13).
  20. Appareil ménager à circulation d'eau selon la revendication 19, caractérisé en ce qu'un dispositif de commande (27) est ménagé, au moyen duquel une contre-tension induite et/ou un décalage de phase entre la tension électrique appliquée sur le moteur à courant continu et celle du courant de moteur peuvent être enregistrés pour déterminer la vitesse de rotation du moteur à courant continu sans balai.
EP10709493.0A 2009-04-02 2010-03-16 Procédé pour faire fonctionner un appareil ménager à circulation d'eau Active EP2413774B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10709493T PL2413774T3 (pl) 2009-04-02 2010-03-16 Sposób eksploatacji prowadzącego wodę urządzenia gospodarstwa domowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009002150A DE102009002150A1 (de) 2009-04-02 2009-04-02 Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts
PCT/EP2010/053354 WO2010112331A2 (fr) 2009-04-02 2010-03-16 Procédé pour faire fonctionner un appareil ménager à circulation d'eau

Publications (2)

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EP2413774A2 EP2413774A2 (fr) 2012-02-08
EP2413774B1 true EP2413774B1 (fr) 2015-01-07

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EP10709493.0A Active EP2413774B1 (fr) 2009-04-02 2010-03-16 Procédé pour faire fonctionner un appareil ménager à circulation d'eau

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US (1) US20120006360A1 (fr)
EP (1) EP2413774B1 (fr)
DE (1) DE102009002150A1 (fr)
PL (1) PL2413774T3 (fr)
WO (1) WO2010112331A2 (fr)

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US20140173467A1 (en) * 2012-12-19 2014-06-19 Rabbit, Inc. Method and system for content sharing and discovery
US11141039B2 (en) 2017-02-24 2021-10-12 Electrolux Appliances Aktiebolag Dishwasher, method and control system for handling clogging condition
DE102017211571A1 (de) 2017-07-06 2019-01-10 BSH Hausgeräte GmbH Verfahren zum Betrieb eines wasserführenden Haushaltsgerätes mit verbesserter Bestimmung einer Leerlauflast einer Pumpe und Haushaltsgerät hierfür
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IT201800001812A1 (it) * 2018-01-25 2019-07-25 Candy Spa Metodo per valutare automaticamente il grado di pulizia del sistema di filtraggio in una macchina lavastoviglie.

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Also Published As

Publication number Publication date
US20120006360A1 (en) 2012-01-12
EP2413774A2 (fr) 2012-02-08
WO2010112331A3 (fr) 2010-11-25
DE102009002150A1 (de) 2010-10-07
PL2413774T3 (pl) 2015-05-29
WO2010112331A2 (fr) 2010-10-07

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