EP2413774A2 - Procédé pour faire fonctionner un appareil ménager à circulation d'eau - Google Patents

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

Info

Publication number
EP2413774A2
EP2413774A2 EP10709493A EP10709493A EP2413774A2 EP 2413774 A2 EP2413774 A2 EP 2413774A2 EP 10709493 A EP10709493 A EP 10709493A EP 10709493 A EP10709493 A EP 10709493A EP 2413774 A2 EP2413774 A2 EP 2413774A2
Authority
EP
European Patent Office
Prior art keywords
water
household appliance
conducting household
speed
motor
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
EP10709493A
Other languages
German (de)
English (en)
Other versions
EP2413774B1 (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
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0047Energy or water consumption, e.g. by saving energy or water
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0002Washing processes, i.e. machine working principles characterised by phases or operational steps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/08Drain or recirculation pump parameters, e.g. pump rotational speed or current absorbed by the motor
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00Output 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
    • A47L2501/02Water 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.
  • WO 2005/089621 A1 discloses a dishwashing machine in which emergency conditions during the rinsing operation are detected by monitoring the power consumption of the circulating pump. Such exceptional conditions are, for example, a clogging of the filter or a blockade of the pump impeller of the circulation pump. When detecting such a state of emergency, the speed or the direction of rotation of the circulation pump is changed.
  • 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.
  • Rinsing fluid is pumped, but only a part of the rinsing fluid.
  • the remaining in the household appliance part of the rinsing liquid can be used again in the following program steps with liquid insert, whereby the fresh water supply can be reduced.
  • the part of the rinsing liquid remaining in the water-conducting domestic appliance after partial pumping is applied to items to be cleaned.
  • a dishwasher e.g. during one
  • the rinsing liquid used during the pre-rinsing step can be at least partially used in the subsequent cleaning step and so the
  • the filter system can be detected by a sensor device.
  • suitable sensors for example ultrasonic sensors, can be used to detect, for example, 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. In this case, variables such as manipulated variables of a motor current controller and / or the frequency of an electronic commutation can be 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, since no air is drawn from the circulation pump, 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. Much more 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 can be used, in which 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 speed detection of the circulating pump can also be due to the phase shift of the force applied to the pump motor motor current.
  • a water-conducting household appliance in particular a dishwasher, at least comprising a hydraulic circuit with a filter system, the Siebbelegungsgrad is detected, from the water-bearing household appliance flushing liquid can be discharged, according to the invention when falling below a predetermined limit Siebbeschegungsgrades the flushing liquid only partially dissipated from the household appliance.
  • FIG. 1 shows a schematic diagram of an embodiment of a dishwasher for carrying out the rinsing method according to the invention
  • Fig. 2 is a temperature-time diagram for illustrating the program steps performed in a rinse cycle.
  • a dishwasher with a washing compartment 1 delimiting a washing compartment 1 is shown schematically as an exemplary embodiment of a water-conducting domestic appliance.
  • a washing compartment of the washing container 1 not to be cleaned, to be cleaned dishes in dish racks 3, 5 are arranged. Im shown
  • Rinsing tank 1 are exemplified by two provided in different spray levels
  • Spray arms 7, 8 arranged, via which the items to be washed is applied with rinsing liquid.
  • a pump pot 1 1 is provided in a known manner with a coarse only indicated filter system, 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 over
  • the circulation pump 13 is 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 shows a wash program sequence of the dishwasher on the basis of 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 controlled by means of a control device 27 by appropriate the respective device components, such as the drain pump 18 or the circulation pump 13, executed.
  • 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 control device 27, the water inlet valve 28 opens in the fresh water supply line 16, whereby fresh water enters the sump 1 1.
  • the rinsing liquid is pumped off by means of the rinse 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 limit Siebbeschegungsgrad, so controls the controller 27, the drain pump 18 after execution of the pre-rinse step V so that only a partial pumping of the used Rinsing liquid 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 needed 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 a brushless DC motor with electronic commutation

Landscapes

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

Abstract

L'invention concerne un procédé pour faire fonctionner un appareil ménager à circulation d'eau, en particulier un lave-vaisselle, procédé au cours duquel un degré d'occupation de tamis d'un système de filtre (10, 12) monté dans le circuit hydraulique de l'appareil ménager est détecté. Selon l'invention, le liquide de rinçage est évacué uniquement de manière partielle de l'appareil ménager lorsqu'il est détecté qu'un degré d'occupation de tamis limite prédéterminé n'est pas atteint.
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)

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

Family

ID=42245570

Family Applications (1)

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

Country Status (5)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9192280B2 (en) * 2012-12-07 2015-11-24 Electrolux Home Products, Inc. Method and system for detecting and removing a clogging condition of a filter in a dishwasher
US20140173467A1 (en) * 2012-12-19 2014-06-19 Rabbit, Inc. Method and system for content sharing and discovery
WO2018153472A1 (fr) 2017-02-24 2018-08-30 Electrolux Appliances Aktiebolag Lave-vaisselle, procédé et système de commande pour gérer un état d'obstruction
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
DE102017223271A1 (de) * 2017-07-18 2019-01-24 BSH Hausgeräte GmbH Geschirrspülmaschine mit ein oder mehreren Beladeeinheiten
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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US4673441A (en) * 1982-10-18 1987-06-16 Meyers Theodore F Dishwashing method
DE3626351A1 (de) 1986-08-04 1988-02-11 Licentia Gmbh Verfahren zum betreiben einer geschirrspuelmaschine
DE4243868C2 (de) * 1992-12-23 1996-01-25 Bosch Siemens Hausgeraete Verfahren zum Betreiben einer Geschirrspülmaschine
DE4415823C2 (de) * 1994-05-05 2001-07-19 Aeg Hausgeraete Gmbh Verfahren zur Spülprogramm-Steuerung in Haushalt-Geschirrspülmaschinen und Vorrichtung zur Durchführung des Verfahrens
DE4418721A1 (de) * 1994-05-28 1995-11-30 Licentia Gmbh Steuerungsverfahren für Laugenumwälz-Pumpen in Haushalt-Geschirrspülmaschinen
US6182674B1 (en) 1996-11-19 2001-02-06 Whirlpool Corporation Pump and soil collection system for a dishwasher
US6034493A (en) * 1997-02-05 2000-03-07 Fisher & Paykel Limited Brushless DC motor control
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US7241347B2 (en) * 2002-07-02 2007-07-10 Whirlpool Corporation Adaptive drain and purge system for a dishwasher
DE10314892A1 (de) * 2003-04-01 2004-10-14 Electrolux Home Products Corporation N.V. Verfahren zur Erkennung der Beladung eines Siebsystems einer Geschirrspülmaschine
KR100488033B1 (ko) * 2003-07-31 2005-05-06 엘지전자 주식회사 식기 세척기의 세척 유로 제어 장치
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Also Published As

Publication number Publication date
WO2010112331A3 (fr) 2010-11-25
PL2413774T3 (pl) 2015-05-29
US20120006360A1 (en) 2012-01-12
WO2010112331A2 (fr) 2010-10-07
DE102009002150A1 (de) 2010-10-07
EP2413774B1 (fr) 2015-01-07

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