EP2276388B1 - Method for controlling a filling process of a water-bearing household appliance - Google Patents

Method for controlling a filling process of a water-bearing household appliance Download PDF

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Publication number
EP2276388B1
EP2276388B1 EP09737980A EP09737980A EP2276388B1 EP 2276388 B1 EP2276388 B1 EP 2276388B1 EP 09737980 A EP09737980 A EP 09737980A EP 09737980 A EP09737980 A EP 09737980A EP 2276388 B1 EP2276388 B1 EP 2276388B1
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EP
European Patent Office
Prior art keywords
water
pump
domestic appliance
conducting domestic
household appliance
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.)
Active
Application number
EP09737980A
Other languages
German (de)
French (fr)
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EP2276388A1 (en
Inventor
Bernd Hesterberg
Karlheinz Rehm
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
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL09737980T priority Critical patent/PL2276388T3/en
Publication of EP2276388A1 publication Critical patent/EP2276388A1/en
Application granted granted Critical
Publication of EP2276388B1 publication Critical patent/EP2276388B1/en
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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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0023—Water filling
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4244—Water-level measuring or regulating arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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
    • A47L2501/01—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
    • A47L2501/26—Indication or alarm to the controlling device or to the user
    • 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
    • A47L2501/32—Stopping or disabling machine operation, including disconnecting the machine from a network, e.g. from an electrical power supply
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/14—Supply, recirculation or draining of washing liquid
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/48—Current or voltage of the motor driving the pump
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D06F2105/60—Audible signals
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices

Definitions

  • the invention relates to a method for controlling a filling process of a water-conducting household appliance, in particular a dishwasher or washing machine.
  • Domestic water appliances such as dishwashers or washing machines, require a minimum amount of water for their operation.
  • the inclusion of this minimum amount of water occurs during a filling step, which is usually at the beginning of a multi-step cleaning program.
  • a cleaning program may comprise the steps of pre-rinsing, intermediate rinsing, cleaning, rinsing and drying. D. h., It is often necessary during a run of such a cleaning program that water-conducting household appliances to fill again with a minimum amount of water.
  • a dishwashing machine which has a sensor for detecting water flowing into the household appliance water and a machine-controllable shut-off that flows in the open state water in the water-bearing household appliance and with a pump for conveying the incoming water into the household appliance water, wherein When the shut-off device is open, the fill sensor is monitored.
  • known methods is not the recognition of a total failure of the filling sensor possible.
  • shut-off is closed on the evaluation of the performance of the pump, so that overflow of the water-conducting household appliance is reliably prevented.
  • an optical and / or acoustic error signal is generated on the evaluation of the performance characteristic of the pump. This can be done for example by a signal lamp, which is arranged on a control panel of the water-conducting household appliance.
  • the inflow of water in the water-conducting household appliance is prevented in a new filling process.
  • an operator can not trigger a renewed filling process by re-starting the water-conducting water device, which could then possibly lead to overflow of the water-conducting household appliance.
  • the performance of the pump is preferably evaluated based on the power consumption or current consumption and / or controlled variables of a motor driving the pump.
  • the load of the motor driving the pump is determined on the basis of the evaluated current consumption and / or controlled variable. It is thus recorded and evaluated whether it comes to an increase in load during operation of the pump by the promotion of already in the water-bearing household appliance water.
  • the current consumption or current consumption and / or controlled variables of a controlled drive of the pump can be used to determine whether water is already present in the water-bearing domestic appliance after opening the controllable shut-off device.
  • the pump is activated in a non-concentricity of the pump ensuring water quantity.
  • the pump is activated in the case of a quantity of water which has flowed into the domestic appliance which is smaller than a quantity of water necessary for concentricity of the pump. That is, the pump is operated after opening the shut-off valve and after failure of a signal of the filling sensor with an amount of water in addition to water and air from the pump is sucked, resulting in a non-circular running of the pump.
  • it may be an amount of water from 0.5 to 1 l, while for a concentricity of the pump 3 to 4 1 water are required.
  • the activation of the pump after a period of time in particular a predetermined Zeitspannet takes place.
  • a period of time in particular a predetermined Zeitspannet takes place.
  • shut-off are closed, so that a further inflow of water is prevented.
  • the filling sensor is a FsselradGooder, so that a particularly simple structure is given.
  • the filling sensor is arranged in a supply line of the water-conducting household appliance, wherein the supply line allows to connect the water-conducting household appliance to a household water system.
  • the pump of a circulating pump for circulating liquid in the water-conducting household appliance or a drain pump for pumping liquid from the water-bearing household appliance is preferably provided.
  • the invention also includes a water-conducting household appliance, designed to carry out the method according to the invention.
  • a dishwasher 2 is shown as an example of a water-conducting household appliance.
  • the dishwasher 2 has a washing container 16, in the dishes to be cleaned in extendable arranged inside a washing container 16 dish racks (not shown) can be introduced.
  • a spray arm 18 is provided in the interior of the washing container 16, with which items to be washed can be wetted with liquid or rinsing liquor, ie water mixed with cleaning agents.
  • the spray arm 18 is liquid-conducting connected to a pump 8, which is connected on the suction side via a line with a pump pot 20 which is arranged in the bottom region of the washing container 16, so that trickling down from items to be washed down liquid or rinse liquor in the ground and thus in the pump sump 20th collects and can be sucked by the pump 8.
  • a motor 10 is provided, which may be, for example, a BLDC or BLAC motor, ie an electronically mounted electric motor with permanent magnets, which allows in a particularly simple way to detect load fluctuations of the pump.
  • the motor 10 is for this purpose connected to a control device 12 of the dishwasher 2.
  • a supply line 22 is provided which can be opened and closed by means of a controllable shut-off valve 6.
  • the shut-off valve 6 is also connected to the control device 12.
  • a filling sensor 4 is connected, which is formed in the present embodiment as an impeller. However, other suitable fill sensors may be used.
  • the shut-off valve 6 is opened by the control device 12 so that water can flow into the washing container 16 via the feed line 22.
  • the filling sensor 4 is also monitored by the control device 12. If the filling sensor 4 delivers a signal representing water flowing through the filling sensor 4 after opening the shut-off valve 6, the process continues until a predetermined amount has run into the washing container 16 of the dishwasher 2, for example 3 to 4 liters of water. Subsequently, it is possible to continue with a regular further program step, for example a cleaning step.
  • shut-off means 6 is kept open for a predetermined period of, for example, fifteen seconds to one minute, during which it is continuously checked whether the filling sensor 4 is on Signal to the controller 12 supplies. If this time elapses without the filling sensor 4 providing a signal to the control device 12, the shut-off valve 6 is subsequently closed again in order to prevent further water from flowing into the washing container 16 of the dishwasher 2.
  • control device 12 activates the motor 10 of the pump 8 in order to circulate the water which has already flowed into the washing container 16 of the dishwasher 2.
  • the current consumption of the motor 10 is evaluated by the control device 12 to determine based on the load of the motor 10, whether the pump 8 circulates water or not.
  • the closing means 6 is closed, if not already done, in order to prevent further water from entering the washing container 16 of the dishwasher 2 flows.
  • a display (not shown), for example on a control panel, is activated by the control device 12 so that an operator is informed by an optical error signal that there is a fault in the dishwasher 2, in particular in the filling sensor 4.
  • an acoustic error signal is generated in addition to the optical one.
  • shut-off valve 6 is permanently blocked, so that it is ensured that even in a renewed attempt to start the dishwasher 2, additional water washing container 16 of the dishwasher 2 can not flow, which could lead to overflow of the dishwasher 2 ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

A method for controlling a filling process of a water-bearing household appliance. The method includes opening a locking arrangement to fill the water-bearing household appliance with water, wherein the locking arrangement is controlled by the water-bearing household appliance; monitoring a fill sensor that detects the water flowing into the water-bearing household appliance; activating a pump to convey the water that flowed into the water-bearing household appliance as a result of the absence of at least one signal from the fill sensor; and analyzing a performance characteristic of the pump.

Description

Die Erfindung betrifft ein Verfahren zum Steuern eines Füllvorgangs eines wasserführenden Haushaltsgeräts, insbesondere einer Geschirrspül- oder Waschmaschine.The invention relates to a method for controlling a filling process of a water-conducting household appliance, in particular a dishwasher or washing machine.

Wasserführende Haushaltsgeräte, wie beispielsweise Geschirrspül- oder Waschmaschinen, benötigen für ihren Betrieb eine Mindestmenge an Wasser. Die Aufnahme dieser Mindestmenge an Wasser erfolgt während eines Füllschritts, der üblicherweise am Anfang eines mehrere Schritte aufweisenden Reinigungsprogramms steht. Ein derartiges Reinigungsprogramm kann beispielsweise im Fall einer Geschirrspülmaschine die Schritte Vorspülen, Zwischenspülen, Reinigen, Klarspülen und Trocknen umfassen. D. h., es ist während eines Durchlauf eines derartigen Reinigungsprogramms mehrfach nötig, dass wasserführende Haushaltsgeräte erneut mit einer Mindestwassermenge zu füllen.Domestic water appliances, such as dishwashers or washing machines, require a minimum amount of water for their operation. The inclusion of this minimum amount of water occurs during a filling step, which is usually at the beginning of a multi-step cleaning program. In the case of a dishwasher, for example, such a cleaning program may comprise the steps of pre-rinsing, intermediate rinsing, cleaning, rinsing and drying. D. h., It is often necessary during a run of such a cleaning program that water-conducting household appliances to fill again with a minimum amount of water.

Aus der EP 1 593 335 B1 ist eine Geschirrspülmaschine bekannt, die einen Sensor zum Erfassen von in das wasserführende Haushaltsgerät einströmenden Wasser aufweist sowie ein maschinenseitig ansteuerbares Absperrmittel, das im geöffneten Zustand Wasser in das wasserführende Haushaltsgerät strömen lässt und mit einer Pumpe zum Fördern des in das wasserführende Haushaltsgerät einströmenden Wassers, wobei bei geöffneten Absperrmittel eine Überwachung des Füllsensors erfolgt. Mit dem aus der aus der EP 1 593 335 B1 bekannten Verfahren ist jedoch nicht das Erkennen eines Totalausfalls des Füllsensors möglich.From the EP 1 593 335 B1 a dishwashing machine is known, which has a sensor for detecting water flowing into the household appliance water and a machine-controllable shut-off that flows in the open state water in the water-bearing household appliance and with a pump for conveying the incoming water into the household appliance water, wherein When the shut-off device is open, the fill sensor is monitored. With the out of the EP 1 593 335 B1 However, known methods is not the recognition of a total failure of the filling sensor possible.

Es ist daher Aufgabe der Erfindung, ein Verfahren anzugeben, das ein Erkennen eines Totalausfalls eines Füllsensors erlaubt.It is therefore an object of the invention to provide a method that allows detection of a total failure of a filling sensor.

Die Aufgabe der Erfindung wird dadurch gelöst, dass das Verfahren folgende Schritte aufweist:

  • Öffnen eines maschinenseitig ansteuerbaren Absperrmittels zum Füllen des wasserführenden Haushaltsgeräts mit Wasser,
  • Überwachen eines Füllsensors, der in das wasserführende Haushaltsgerät einströmendes Wasser erfasst,
  • Aktivieren einer Pumpe zum Fördern des in das wasserführende Haushaltsgerät eingeströmten Wassers auf Ausbleiben wenigstens eines Signals des Füllsensors hin, und
  • Auswerten der Leistungscharakteristik der Pumpe.
The object of the invention is achieved in that the method comprises the following steps:
  • Opening a shut-off device which can be activated on the machine for filling the water-bearing domestic appliance with water,
  • Monitoring a filling sensor that detects water entering the water-bearing domestic appliance,
  • Activation of a pump for conveying the water flowing into the household appliance water flowing out of at least one signal of the Füllsensors out, and
  • Evaluation of the performance characteristics of the pump.

Dadurch, dass nach Öffnen des Absperrmittels und Ausbleiben eines Signals des Füllsensors eine Aktivierung der Pumpe erfolgt, kann festgestellt werden, ob Wasser durch das Absperrmittel in das wasserführende Haushaltsgerät strömt oder eine Fehlfunktion des Füllsensors vorliegt. Um letzteres zu verifizieren ist vorgesehen, die Leistungscharakteristik der Pumpe auszuwerten, um so festzustellen, ob sich Wasser, bspw. eine Mindestmenge von 0,5 bis 1 I im wasserführenden Haushaltsgerät befindet. Ist dies der Fall, weist offensichtlich der Füllsensor einen Defekt auf, im anderen Fall hingegen liegt eine Störung im Wasserversorgungsnetz vor, das das wasserführende Haushaltsgerät mit Wasser versorgt, beispielsweise durch eine Blockade einer Zuleitung.Characterized in that after opening the shut-off and failure of a signal of the filling sensor activation of the pump, it can be determined whether water flows through the shut-off in the water-bearing household appliance or there is a malfunction of the filling sensor. To verify the latter is provided to evaluate the performance of the pump, so as to determine whether water, for example. A minimum amount of 0.5 to 1 I is in the water-bearing household appliance. If this is the case, obviously the filling sensor has a defect, in the other case, however, there is a fault in the water supply network, which supplies the water-bearing household appliance with water, for example by blocking a supply line.

Somit wird mit dem erfindungsgemäßen Verfahren auf einfache Art und Weise festgestellt, ob der Füllsensor des wasserführenden Haushaltsgeräts funktionsfähig ist oder nicht und vor Beendigung des Füllvorgangs dieser beendet.Thus, it is determined in a simple manner with the method according to the invention, whether the filling sensor of the water-conducting household appliance is functional or not and ends before the end of the filling process.

Dabei ist vorzugsweise vorgesehen, dass auf die Auswertung der Leistungscharakteristik der Pumpe das Absperrmittel geschlossen wird, so dass ein Überlaufen des wasserführenden Haushaltsgeräts zuverlässig verhindert ist.It is preferably provided that the shut-off is closed on the evaluation of the performance of the pump, so that overflow of the water-conducting household appliance is reliably prevented.

Ferner ist vorzugsweise vorgesehen, dass auf die Auswertung der Leistungscharakteristik der Pumpe ein optisches und/oder akustisches Fehlersignal, insbesondere ein von einer Bedienperson vernehmbares Fehlersignal erzeugt wird. Dies kann beispielsweise durch eine Signallampe erfolgen, die an einer Bedienblende des wasserführenden Haushaltsgeräts angeordnet ist.Furthermore, it is preferably provided that an optical and / or acoustic error signal, in particular an error signal audible by an operator, is generated on the evaluation of the performance characteristic of the pump. This can be done for example by a signal lamp, which is arranged on a control panel of the water-conducting household appliance.

Schließlich ist vorzugsweise vorgesehen, dass das Einströmen von Wasser im wasserführenden Haushaltsgerät bei einem erneuten Einfüllvorgang verhindert wird. Somit ist zuverlässig verhindert, dass im Fall eines defekten Füllsensors eine Bedienperson nicht durch erneutes Starten des wasserführenden Wassergeräts einen erneuten Füllvorgang auslösen kann, der dann eventuell zu einem Überlaufen des wasserführenden Haushaltsgeräts führen könnte.Finally, it is preferably provided that the inflow of water in the water-conducting household appliance is prevented in a new filling process. Thus, it is reliably prevented that in the case of a defective filling sensor, an operator can not trigger a renewed filling process by re-starting the water-conducting water device, which could then possibly lead to overflow of the water-conducting household appliance.

Die Leistungscharakteristik der Pumpe wird vorzugsweise anhand der Stromaufnahme oder Stromaufnahme und/oder Regelgrößen eines die Pumpe antreibenden Motors ausgewertet.The performance of the pump is preferably evaluated based on the power consumption or current consumption and / or controlled variables of a motor driving the pump.

Dabei ist vorzugsweise vorgesehen, dass anhand der ausgewerteten Stromaufnahme und/oder Regelgröße die Last des die Pumpe antreibenden Motors bestimmt wird. Es wird also erfasst und ausgewertet, ob durch die Förderung von bereits in das wasserführende Haushaltsgerät eingelaufenen Wassers es zu einer Lastzunahme bei dem Betrieb der Pumpe kommt. Anstelle der Stromaufnahme oder Stromaufnahme und/oder Regelgrößen eines geregelten Antriebs der Pumpe können auch andere geeignete Größen herangezogen werden, um festzustellen, ob sich bereits nach Öffnen des ansteuerbaren Absperrmittels Wasser im wasserführenden Haushaltsgerät befindet.It is preferably provided that the load of the motor driving the pump is determined on the basis of the evaluated current consumption and / or controlled variable. It is thus recorded and evaluated whether it comes to an increase in load during operation of the pump by the promotion of already in the water-bearing household appliance water. Instead of the current consumption or current consumption and / or controlled variables of a controlled drive of the pump, other suitable variables can be used to determine whether water is already present in the water-bearing domestic appliance after opening the controllable shut-off device.

Vorzugsweise ist vorgesehen, dass die Pumpe aktiviert wird bei einer keinen Rundlauf der Pumpe gewährleistenden Wassermenge. D.h., die Pumpe aktiviert wird bei einer in das wasserführende Haushaltsgerät eingeströmten Wassermenge, die kleiner ist als eine für einen Rundlauf der Pumpe notwendige Wassermenge. Das heißt, die Pumpe wird nach Öffnen des Absperrventils und nach Ausbleiben eines Signals des Füllsensors mit einer Wassermenge betrieben, bei der neben Wasser auch Luft von der Pumpe angesaugt wird, was einen unrunden Lauf der Pumpe zur Folge hat. Beispielsweise kann es sich um eine Wassermenge von 0,5 bis 1 l handeln, während für einen Rundlauf der Pumpe 3 bis 4 1 Wasser erforderlich sind.It is preferably provided that the pump is activated in a non-concentricity of the pump ensuring water quantity. In other words, the pump is activated in the case of a quantity of water which has flowed into the domestic appliance which is smaller than a quantity of water necessary for concentricity of the pump. That is, the pump is operated after opening the shut-off valve and after failure of a signal of the filling sensor with an amount of water in addition to water and air from the pump is sucked, resulting in a non-circular running of the pump. For example, it may be an amount of water from 0.5 to 1 l, while for a concentricity of the pump 3 to 4 1 water are required.

Ferner ist vorzugsweise vorgesehen, dass die Aktivierung der Pumpe nach einer Zeitspanne, insbesondere einer vorgebbaren Zeitspannet erfolgt. Somit wird auf einfache Art und Weise sichergestellt, dass sich nach Öffnen des Absperrmittels und auf ein Ausbleiben wenigstens eines Signals des Füllsensors hin eine ausreichende Menge Wasser im wasserführenden Haushaltsgerät sammeln kann, die mittels einer unrund laufenden Pumpe zuverlässig erfasst werden kann. Die Länge der Zeitspanne bemisst sich nach der Zeitdauer, die erforderlich ist, um die minimal erfassbare Menge von 0,5 bis 1 l Wasser zu erfassen. Die Zeitspanne kann beispielsweise zwischen 15 Sekunden und 1 Minute liegen.Furthermore, it is preferably provided that the activation of the pump after a period of time, in particular a predetermined Zeitspannet takes place. Thus, it is ensured in a simple manner that after opening the shut-off and a lack of at least one signal of the filling sensor towards a sufficient amount Collect water in water-bearing household appliance, which can be reliably detected by means of a non-running running pump. The length of the period of time is determined by the time required to detect the minimum detectable amount of 0.5 to 1 liter of water. The time span can be, for example, between 15 seconds and 1 minute.

Es ist ferner vorzugsweise vorgesehen, dass nach Ablauf einer Zeitspanne, insbesondere einer vorgebbaren Zeitspanne und auf die Auswertung der Leistungscharakteristik der Pumpe hin, die Absperrmittel geschlossen werden, so dass ein weiterer Zulauf von Wasser verhindert ist.It is further preferably provided that after a period of time, in particular a predetermined period of time and on the evaluation of the performance of the pump, the shut-off are closed, so that a further inflow of water is prevented.

Es ist ferner vorzugsweise vorgesehen, dass der Füllsensor ein Fühlradzähler ist, so dass ein besonders einfacher Aufbau gegeben ist.It is further preferably provided that the filling sensor is a Fühlradzähler, so that a particularly simple structure is given.

Außerdem ist vorzugsweise vorgesehen, dass der Füllsensor in einer Zulaufleitung des wasserführenden Haushaltsgeräts angeordnet ist, wobei die Zulaufleitung es erlaubt, das wasserführende Haushaltsgerät an ein haushaltiges Wassersystem anzuschließen.In addition, it is preferably provided that the filling sensor is arranged in a supply line of the water-conducting household appliance, wherein the supply line allows to connect the water-conducting household appliance to a household water system.

Schließlich ist vorzugsweise vorgesehen, dass die Pumpe einer Umwälzpumpe zum Umwälzen von Flüssigkeit im wasserführenden Haushaltsgerät oder eine Laugenpumpe zum Fördern von Flüssigkeit aus dem wasserführenden Haushaltsgerät ist.Finally, it is preferably provided that the pump of a circulating pump for circulating liquid in the water-conducting household appliance or a drain pump for pumping liquid from the water-bearing household appliance.

Schließlich gehört zur Erfindung noch ein wasserführendes Haushaltsgerät, ausgebildet zum Durchführen des erfindungsgemäßen Verfahrens.Finally, the invention also includes a water-conducting household appliance, designed to carry out the method according to the invention.

Im Folgenden wird die Erfindung anhand einer Zeichnung erläutert. Es zeigen:

  • Fig. 1 eine schematische Darstellung einer Geschirrspülmaschine.
In the following the invention will be explained with reference to a drawing. Show it:
  • Fig. 1 a schematic representation of a dishwasher.

Im vorliegenden Ausführungsbeispiel ist eine Geschirrspülmaschine 2 als Beispiel für ein wasserführendes Haushaltsgerät dargestellt.In the present embodiment, a dishwasher 2 is shown as an example of a water-conducting household appliance.

Die Geschirrspülmaschine 2 weist einen Spülbehälter 16 auf, in den zu reinigendes Spülgut in ausziehbar im Inneren eines Spülbehälters 16 angeordneten Geschirrkörben (nicht dargestellt) eingebracht werden kann. Zur Beaufschlagung des Spülguts ist im Inneren des Spülbehälters 16 ein Sprüharm 18 vorgesehen, mit dem Spülgut mit Flüssigkeit bzw. Spülflotte, d. h. mit Reinigungsmitteln versetztes Wasser, benetzt werden kann.The dishwasher 2 has a washing container 16, in the dishes to be cleaned in extendable arranged inside a washing container 16 dish racks (not shown) can be introduced. For loading the items to be washed, a spray arm 18 is provided in the interior of the washing container 16, with which items to be washed can be wetted with liquid or rinsing liquor, ie water mixed with cleaning agents.

Der Sprüharm 18 ist flüssigkeitsleitend mit einer Pumpe 8 verbunden, die saugseitig über eine Leitung mit einem Pumpentopf 20 verbunden ist, der im Bodenbereich des Spülbehälters 16 angeordnet ist, so dass vom Spülgut herab tröpfelnde Flüssigkeit bzw. Spülflotte sich im Boden und damit im Pumpensumpf 20 sammelt und von der Pumpe 8 angesaugt werden kann. Zum Antrieb der Pumpe 8 ist ein Motor 10 vorgesehen, bei dem es sich beispielsweise um einen BLDC- oder BLAC-Motor handeln kann, also um einen elektronisch montierten Elektromotor mit Permanentmagneten, der auf besonders einfache Weise es erlaubt, Lastschwankungen der Pumpe zu erfassen. Der Motor 10 ist hierzu mit einer Steuereinrichtung 12 der Geschirrspülmaschine 2 verbunden.The spray arm 18 is liquid-conducting connected to a pump 8, which is connected on the suction side via a line with a pump pot 20 which is arranged in the bottom region of the washing container 16, so that trickling down from items to be washed down liquid or rinse liquor in the ground and thus in the pump sump 20th collects and can be sucked by the pump 8. To drive the pump 8, a motor 10 is provided, which may be, for example, a BLDC or BLAC motor, ie an electronically mounted electric motor with permanent magnets, which allows in a particularly simple way to detect load fluctuations of the pump. The motor 10 is for this purpose connected to a control device 12 of the dishwasher 2.

Um die Geschirrspülmaschine 2 zu Beginn eines Reinigungsvorgangs mit Wasser zu füllen ist eine Zulaufleitung 22 vorgesehen, die mittels eines ansteuerbaren Absperrventils 6 geöffnet und geschlossen werden kann. Hierzu ist das Absperrventil 6 ebenfalls mit der Steuereinrichtung 12 verbunden.To fill the dishwasher 2 with water at the beginning of a cleaning process, a supply line 22 is provided which can be opened and closed by means of a controllable shut-off valve 6. For this purpose, the shut-off valve 6 is also connected to the control device 12.

Schließlich ist mit der Steuereinrichtung 12 ein Füllsensor 4 verbunden, der im vorliegenden Ausführungsbeispiel als Flügelradsensor ausgebildet ist. Es können jedoch auch andere geeignete Füllsensoren Verwendung finden.Finally, with the control device 12, a filling sensor 4 is connected, which is formed in the present embodiment as an impeller. However, other suitable fill sensors may be used.

Zu Beginn eines Füllvorgangs wird von der Steuereinrichtung 12 das Absperrventil 6 geöffnet, so dass über die Zulaufleitung 22 Wasser in den Spülbehälter 16 strömen kann. Zugleich zu dem Öffnen des Absperrventils 16 wird auch der Füllsensor 4 von der Steuereinrichtung 12 überwacht. Liefert der Füllsensor 4 nach Öffnen des Absperrventils 6 ein durch den Füllsensor 4 strömendes Wasser repräsentierendes Signal, wird der Vorgang fortgesetzt, bis eine vorgegebene Menge in dem Spülbehälter 16 der Geschirrspülmaschine 2, beispielsweise 3 bis 4 Liter Wasser eingelaufen ist. Anschließend kann mit einem regulären weiteren Programmschritt, beispielsweise einem Reinigungsschritt fortgesetzt werden.At the beginning of a filling operation, the shut-off valve 6 is opened by the control device 12 so that water can flow into the washing container 16 via the feed line 22. At the same time as the opening of the shut-off valve 16, the filling sensor 4 is also monitored by the control device 12. If the filling sensor 4 delivers a signal representing water flowing through the filling sensor 4 after opening the shut-off valve 6, the process continues until a predetermined amount has run into the washing container 16 of the dishwasher 2, for example 3 to 4 liters of water. Subsequently, it is possible to continue with a regular further program step, for example a cleaning step.

Wird hingegen nach dem Öffnen des Absperrmittels 6 von dem Füllsensor 4 kein Signal an die Steuereinrichtung 12 übertragen, wird das Absperrmittel 6 für eine vorgegebene Zeitdauer von beispielsweise fünfzehn Sekunden bis zu einer Minute offen gehalten, während der kontinuierlich überprüft wird, ob der Füllsensor 4 ein Signal an die Steuereinrichtung 12 liefert. Verstreicht diese Zeit, ohne dass der Füllsensor 4 ein Signal an die Steuereinrichtung 12 liefert, wird anschließend wieder das Absperrventil 6 geschlossen, um zu verhindern, dass weiter Wasser in den Spülbehälter 16 der Geschirrspülmaschine 2 strömt.If, on the other hand, no signal is transmitted to the control device 12 after opening the shut-off means 6 by the filling sensor 4, the shut-off means 6 is kept open for a predetermined period of, for example, fifteen seconds to one minute, during which it is continuously checked whether the filling sensor 4 is on Signal to the controller 12 supplies. If this time elapses without the filling sensor 4 providing a signal to the control device 12, the shut-off valve 6 is subsequently closed again in order to prevent further water from flowing into the washing container 16 of the dishwasher 2.

Anschließend aktiviert die Steuereinrichtung 12 den Motor 10 der Pumpe 8, um das bereits in den Spülbehälter 16 der Geschirrspülmaschine 2 eingeströmte Wasser umzuwälzen. Dabei wird von der Steuereinrichtung 12 die Stromaufnahme des Motors 10 ausgewertet, um anhand der Last des Motors 10 festzustellen, ob die Pumpe 8 Wasser umwälzt oder nicht.Subsequently, the control device 12 activates the motor 10 of the pump 8 in order to circulate the water which has already flowed into the washing container 16 of the dishwasher 2. In this case, the current consumption of the motor 10 is evaluated by the control device 12 to determine based on the load of the motor 10, whether the pump 8 circulates water or not.

Wird anhand der Last des Motors 10 festegestellt, dass sich Wasser in der Geschirrspülmaschine 2, dass heißt Wasser sich im Inneren des Spülbehälters 16 befindet, wird, falls noch nicht erfolgt, das Absperrmittel 6 geschlossen, um zu verhindern, dass weiter Wasser in den Spülbehälter 16 der Geschirrspülmaschine 2 strömt. Ferner wird von der Steuereinrichtung 12 eine Anzeige (nicht dargestellt), beispielsweise an einer Bedienblende, aktiviert, so dass einer Bedienperson durch ein optisches Fehlersignal zur Kenntnis gebracht wird, das eine Störung bei der Geschirrspülmaschine 2, insbesondere bei dem Füllsensor 4, vorliegt. Alternativ oder zusätzlich kann auch vorgesehen sein, dass neben der optischen auch ein akkustisches Fehlersignal erzeugt wird.If it is ascertained on the basis of the load of the engine 10 that water in the dishwasher 2, that is to say water is inside the washing container 16, the closing means 6 is closed, if not already done, in order to prevent further water from entering the washing container 16 of the dishwasher 2 flows. Furthermore, a display (not shown), for example on a control panel, is activated by the control device 12 so that an operator is informed by an optical error signal that there is a fault in the dishwasher 2, in particular in the filling sensor 4. Alternatively or additionally, it can also be provided that an acoustic error signal is generated in addition to the optical one.

Schließlich wird mittels der Steuereinrichtung 12 das Absperrventil 6 dauerhaft blockiert, so dass sichergestellt ist, dass auch bei einem erneuten Versuch, die Geschirrspülmaschine 2 zu starten, nicht zusätzliches Wasser Spülbehälter 16 der Geschirrspülmaschine 2 strömen kann, was zu einem Überlaufen der Geschirrspülmaschine 2 führen könnte.Finally, by means of the control device 12, the shut-off valve 6 is permanently blocked, so that it is ensured that even in a renewed attempt to start the dishwasher 2, additional water washing container 16 of the dishwasher 2 can not flow, which could lead to overflow of the dishwasher 2 ,

BezugszeichenlisteLIST OF REFERENCE NUMBERS

22
Geschirrspülmaschinedishwasher
44
Füllsensorfill sensor
66
Absperrmittelshutoff
88th
Pumpepump
1010
Motorengine
1212
Steuereinrichtungcontrol device
1616
Spülbehälterrinse tank
1818
Sprüharmspray arm
2020
Pumpenkopfpump head
2222
Zulaufleitungsupply line

Claims (12)

  1. Method of controlling a filling process of a water-conducting domestic appliance, particularly a dishwasher (2) or a washing machine, at least comprising the following steps:
    - opening a blocking means (6), which is activatable on the part of the machine, for filling the water-conducting domestic appliance with water,
    - monitoring a filling sensor (4) which detects water flowing into the water-conducting domestic appliance,
    - activating a pump (8) for conveying the water, which has flowed into the water-conducting domestic appliance, in the absence of at least one signal of the filling sensor (4) and
    - evaluating the performance characteristic of the pump (8).
  2. Method according to claim 1, characterised in that for the evaluation of the performance characteristic of the pump (8) the blocking means (6) is closed.
  3. Method according to claim 1 or 2, characterised in that for the evaluation of the performance characteristic of the pump (8) an optical and/or acoustic fault signal, particularly a fault signal perceivable by a user, is generated.
  4. Method according to claim 1, 2 or 3, characterised in that for the evaluation of the performance characteristic of the pump (8) a fresh filling process is prevented.
  5. Method according to any one of claims 1 to 4, characterised in that the current consumption and the regulating magnitudes or the current consumption of a motor (10) driving the pump (8) is or are evaluated.
  6. Method according to claim 5, characterised in that the load of the motor (1) driving the pump (8) is determined on the basis of the evaluated current consumption and/or the regulating magnitude or the current consumption.
  7. Method according to any one of claims 1 to 6, characterised in that the pump (8) is activated in the case of a water quantity which has flowed into the water-conducting domestic appliance and which is smaller than a water quantity necessary for cyclic running of the pump (8).
  8. Method according to any one of claims 1 to 7, characterised in that the activation of the pump (8) is carried out after elapsing of a time period, particularly a predeterminable time period.
  9. Method according to claim 8, characterised in that after elapsing of the time period, particularly a predeterminable time period, and for evaluation of the performance characteristic of the pump (8) the blocking means (6) is closed.
  10. Method according to any one of claims 1 to 9, characterised in that the filling sensor (4) comprises an impeller meter.
  11. Method according to any one of claims 1 to 10, characterised in that the filling sensor (4) is arranged in a feed duct (22) of the water-conducting domestic appliance.
  12. Method according to any one of claims 1 to 11, characterised in that the pump (8) is a circulating pump for the circulation of liquid in the water-conducting domestic appliance or a solution pump for the conveying of liquid out of the water-conducting domestic appliance.
EP09737980A 2008-04-29 2009-04-08 Method for controlling a filling process of a water-bearing household appliance Active EP2276388B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09737980T PL2276388T3 (en) 2008-04-29 2009-04-08 Method for controlling a filling process of a water-bearing household appliance

Applications Claiming Priority (2)

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DE102008021371A DE102008021371B3 (en) 2008-04-29 2008-04-29 Method for controlling a filling process of a water-conducting household appliance
PCT/EP2009/054180 WO2009132936A1 (en) 2008-04-29 2009-04-08 Method for controlling a filling process of a water-bearing household appliance

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EP2276388A1 EP2276388A1 (en) 2011-01-26
EP2276388B1 true EP2276388B1 (en) 2011-10-19

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EP (1) EP2276388B1 (en)
CN (1) CN102014726B (en)
AT (1) ATE529034T1 (en)
DE (1) DE102008021371B3 (en)
ES (1) ES2372368T3 (en)
PL (1) PL2276388T3 (en)
RU (1) RU2491013C2 (en)
WO (1) WO2009132936A1 (en)

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RU2491013C2 (en) 2013-08-27
RU2010146790A (en) 2012-06-10
PL2276388T3 (en) 2012-03-30
EP2276388A1 (en) 2011-01-26
DE102008021371B3 (en) 2010-01-07
WO2009132936A1 (en) 2009-11-05
CN102014726B (en) 2014-07-09
CN102014726A (en) 2011-04-13
ATE529034T1 (en) 2011-11-15
US8557048B2 (en) 2013-10-15
ES2372368T3 (en) 2012-01-19
US20110038736A1 (en) 2011-02-17

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