EP1845833B1 - Method for operating a water-using domestic appliance - Google Patents

Method for operating a water-using domestic appliance Download PDF

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Publication number
EP1845833B1
EP1845833B1 EP05797269.7A EP05797269A EP1845833B1 EP 1845833 B1 EP1845833 B1 EP 1845833B1 EP 05797269 A EP05797269 A EP 05797269A EP 1845833 B1 EP1845833 B1 EP 1845833B1
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EP
European Patent Office
Prior art keywords
hardness
degree
water
limit value
facility
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
EP05797269.7A
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German (de)
French (fr)
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EP1845833A1 (en
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 PL05797269T priority Critical patent/PL1845833T3/en
Publication of EP1845833A1 publication Critical patent/EP1845833A1/en
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Publication of EP1845833B1 publication Critical patent/EP1845833B1/en
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    • 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
    • A47L15/4229—Water softening 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • 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
    • A47L2401/11—Water hardness, acidity or basicity
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/07—Consumable products, e.g. detergent, rinse aids or salt
    • 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
    • A47L2501/18—Water softening devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • 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
    • 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
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • 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
    • D06F2105/42—Detergent or additive 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
    • 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

Definitions

  • the invention relates to a method for water softening in a liquid-operated water-conducting household appliance with a device for detecting a degree of hardness in the liquid and with a controlled by a control and / or regulating device signaling device for outputting information about the degree of hardness.
  • a disadvantage of this solution is that the measured value detected by the turbidity sensor measures an impermissibly high degree of hardness, in which calcification has already taken place in the household appliance.
  • the user is not informed prior to the onset of calcification in the household appliance in order to take early countermeasures that do not lead to damage in the household appliance.
  • From the DE 196 50 915 A1 is a liquid-conducting domestic appliance with a program control and with at least one conductivity sensor, by which the conductance of a liquid located in the sphere of action of the domestic appliance can be determined.
  • the further program sequence can be set.
  • a dishwashing machine which has a sensor which is designed and arranged to measure a functional parameter, such as the hardness, of the rinsing liquid during the course of the rinsing program.
  • the sensor result can be used to influence the Spülprogrammablauf.
  • the sensor result can be compared with stored data and, if necessary, a signal to the user can be generated.
  • the invention is therefore based on the object in water-bearing household appliances of the type mentioned already inform the user about the degree of hardness, which threatens damage due to calcification in water-bearing household appliance, but no damage in the water-bearing appliance have occurred.
  • This object is achieved in that upon detection of an impermissible above or below a threshold level of hardness, the signaling device is activated.
  • the degree of hardness of the liquid is changed when the signal device signals the impermissible degree of hardness lying above or below the limit value.
  • the degree of hardness of the liquid is adjusted by an external water softening system such that the household appliance liquid is supplied with a permissible degree of hardness.
  • the main advantage is that lime-free liquid is supplied to the water-containing appliance by the setting on the external water softening system, which exclude damage in the water-bearing household appliance and the good to be washed.
  • the external water softening system is designed as a water softening system associated with a building.
  • This arrangement is particularly characterized by the fact that is dispensed with an additional water softening system in the water-bearing domestic appliance and thus costs in the design and assembly can be saved. Furthermore, by the waiver of the water softening system is in the water-bearing household appliance more space for the arrangement of other components available.
  • the water-conducting household appliance over a predetermined period of time detergent is supplied until the signaling device is deactivated.
  • the essential advantage is that it dispenses with a water softening system in the water-bearing household appliance, since the detergent lowers the degree of hardness of the liquid, so that it lies within the permissible range. This measure ensures that damage in the water-conducting household appliance and the goods to be washed are excluded.
  • the user can recognize on the signaling device whether sufficient cleaning agent has been supplied to the liquid in the water-conducting household appliance, since the signaling device is deactivated at the permissible degree of hardness.
  • the cleaning agent is a descaling agent.
  • This solution is particularly characterized by the fact that the descaling agent is inexpensive to produce.
  • a lighting device associated with the signal device upon detection of the impermissible degree of hardness lying above or below the limit value, a lighting device associated with the signal device is activated by the control and / or regulating device.
  • This solution offers the advantage that the information of the impermissible degree of hardness lying above or below the limit value is visualized by means of the lighting device. By visualizing the user recognizes that he must take countermeasures to reduce the degree of hardness in order to extend the life of the water-bearing household appliance.
  • lighting devices are characterized by the fact that they are inexpensive to manufacture.
  • an acoustic device assigned to the signal device is activated by the control and / or regulating device.
  • the device for detecting the degree of hardness is designed as an optical sensor.
  • This solution is characterized in particular by the fact that the optical sensor is very inexpensive to manufacture and the measured values are more accurately detected for determination, since the transmitter is less susceptible to disturbances caused by the liquid flowing around.
  • the device for detecting the degree of hardness is designed as a conductivity sensor.
  • the conductivity sensor is inexpensive to manufacture.
  • FIG. 1 and Fig. 2 show two substantially similar executed dishwasher according to the invention 1, 1 'with a housing 2, 2' shown.
  • a treatment room, not shown, is accessible via door 3, 3 ', which is pivotally mounted on a horizontal axis.
  • the door 3, 3 ' has an inner door, not shown, and an outer door 4, 4', on which an aperture 5, 5 'is arranged.
  • On the panel 5, 5 'are Operating elements 6, 6 'are arranged, via which one can select a program with the individual program steps pre-rinsing, cleaning, intermediate rinsing, rinsing, drying.
  • the outer door 4, 4 ' has for opening and closing a on the aperture 5, 5' arranged actuating handle 7, 7 '.
  • a signal device 8, 8 ' for outputting information of an impermissible degree of hardness above or below a limit value is arranged on the diaphragm 5, 5'.
  • the signal device 8 is designed as an acoustic signal device.
  • the acoustic signal device is formed in the illustrated embodiment as a speaker that outputs an acoustic signal at the impermissible above or below the threshold level of hardness.
  • the signal device 8 ' is designed as a display device. A lettering is visualized on the display device 8 'at the impermissible degree of hardness lying above or below the limit value.
  • the signaling device 8 'could also be designed as an LED which makes the impermissible degree of hardness above or below the limit mark by indicating a color.
  • the signaling device 8, 8 ' is connected to a not shown control and regulation electronics, which receives a measurement signal from a device, not shown, for detecting a degree of hardness of a liquid.
  • the device for detecting a degree of hardness in a liquid is designed as an optical sensor.
  • the device for detecting a degree of hardness can be designed as a conductivity sensor.
  • the optical sensor measures the degree of hardness of a liquid which is fed to the dishwasher 1, 1 '.
  • the optical sensor has a glass body, on which small lime particles, which lie at least in the microscopic range of hardness, settle.
  • a transmitter of the optical sensor transmits light waves in the same frequencies through the glass body to a receiver also associated with the optical sensor.
  • the receiver measures the incoming light intensity and forwards the measurement signal to the control electronics.
  • the dishwasher does not work within the permissible range damaged and there are essentially no lime particles in the liquid, so that the receiver receives the maximum light intensity transmitted by the transmitter.
  • the dishwasher or the goods to be washed can be damaged and lime particles are present in the liquid.
  • the lime particles settle on the glass body of the optical sensor during operation of the dishwasher, so that the receiver does not receive the maximum light intensity transmitted by the transmitter, but only a reduced proportion of the light intensity transmitted by the transmitter.
  • microscopic lime particles are present in the impermissible degree of hardness, they have no influence on the life of the dishwasher. Therefore, damage in the dishwasher and the goods to be washed are excluded.
  • the limit value in the impermissible range of the degree of hardness is defined by the fact that first deposits of microscopically small lime particles form on the glass body of the optical sensor.
  • the receiver of the optical sensor in this case does not receive the maximum light intensity transmitted by the transmitter. If the degree of hardness of the liquid increases, the number of lime particles increases and the degree of hardness is above the limit value. As a result, the receiver receives a lower light intensity and the signaling device is activated via the control and regulating electronics, so that the user can initiate measures for decalcifying the liquid.
  • An alternative way of defining the limit is to calibrate the optical sensor at the factory. The limit value is then defined by the fact that the light intensity received by the receiver is equivalent to a factory-determined number of lime particles arranged on the glass body.
  • the receiver does not receive the maximum light intensity, but a higher light intensity than that in the factory-set calibration. In this case, the impermissible degree of hardness is below the limit in the impermissible range. It should be noted that the microscopic lime particles have no effect on the life of the dishwasher.
  • the optical sensor measures the impermissible degree of hardness above or below the limit value
  • the receiver sends a measuring signal to the control electronics. It is possible to arrange two optical sensors in the dishwasher, with one optical sensor exceeding the impermissible degree of hardness above the limit and another Sensor measures the impermissible degree of hardness below the limit value.
  • the control electronics then controls the signaling device, so that the user is informed of the increased degree of hardness.
  • the information can be delivered via the display or alternatively via the LED as in FIG. 1 shown, or over the speaker, as in FIG. 2 shown, which generates an acoustic signal.
  • the user is informed that he must take measures to lower the degree of hardness of the liquid.
  • he can set an external water softening system associated with the dishwasher 1, 1 '.
  • it can supply descaling agent to the dishwasher 1, 1 ', so that the degree of hardness is lowered.
  • the signaling device 8, 8 ' is deactivated by the control and regulating electronics, since the degree of hardness detected by the optical sensor is within the permissible range and thus can not be damaged by calcium deposits. Due to the decalcifying measures introduced, decanted liquid now flows around the glass body of the optical sensor, so that the microscopic lime particles arranged on the glass body are swept away and the glass body is free of lime particles.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Wasserenthärtung in einem mit Flüssigkeit betriebenen wasserführenden Haushaltgerät mit einer Vorrichtung zur Erfassung eines Härtegrads in der Flüssigkeit und mit einer von einer Steuer- und/oder Regelungseinrichtung angesteuerten Signaleinrichtung zur Ausgabe von Informationen über den Härtegrad.The invention relates to a method for water softening in a liquid-operated water-conducting household appliance with a device for detecting a degree of hardness in the liquid and with a controlled by a control and / or regulating device signaling device for outputting information about the degree of hardness.

Aus der Offenlegungsschrift DE 19721976 A1 ist ein Verfahren zum Feststellen eines unzulässig hohen Verkalkungsgrades einer optischen Messstrecke zur Messung der Trübung einer Lauge in einem mit kalkhaltigem Wasser betriebenen Haushaltgerät bekannt. Das Haushaltgerät weist eine Steuer- und Regelungselektronik auf, die die Messsignale der Messstrecke auswertet und ein Steuersignal abgibt, welches ein am Haushaltgerät angeordnetes Anzeigeelement ansteuert. Durch die in Abhängigkeit des Verkalkungsgrads angesteuerte Anzeigevorrichtung wird dem Benutzer des Gerätes somit signalisiert, dass der Verkalkungsgrad des Gerätes einen die Arbeitsergebnisse des Gerätes oder seiner Bestandteile und/oder dessen Lebensdauer ungünstig beeinflussenden Wert erreicht hat. Somit wird der Benutzer einerseits auf die durch eine Verkalkung drohende Schädigung des Gerätes hingewiesen. Andererseits kann eine solche Anzeige auf einen gezielten Einsatz von Entkalkungsmitteln genutzt und dadurch deren überflüssiger Einsatz vermieden werden.From the publication DE 19721976 A1 is a method for detecting an unacceptably high degree of calcification of an optical measuring section for measuring the turbidity of a liquor in a household appliance operated with kalkhaltigem water known. The household appliance has control and regulating electronics which evaluate the measuring signals of the measuring path and emit a control signal which activates a display element arranged on the household appliance. As a result of the display device activated as a function of the degree of calcification, the user of the device is thus signaled that the degree of calcification of the device has reached a value that unfavorably influences the work results of the device or its components and / or its service life. Thus, the user is on the one hand pointed to the imminent damage caused by calcification of the device. On the other hand, such a display can be used on a targeted use of descaling agents and thereby avoiding their unnecessary use.

Nachteilig bei dieser Lösung ist jedoch, dass der vom Trübungssensor erfasste Messwert einen unzulässig hohen Härtegrad misst, bei dem bereits eine Verkalkung im Haushaltgerät stattgefunden hat. Der Benutzer wird jedoch nicht vor dem Einsetzen der Verkalkung im Haushaltgerät informiert, um frühzeitig Gegenmaßnahmen einzuleiten, die nicht zu Beschädigung im Haushaltgerät führen.A disadvantage of this solution, however, is that the measured value detected by the turbidity sensor measures an impermissibly high degree of hardness, in which calcification has already taken place in the household appliance. However, the user is not informed prior to the onset of calcification in the household appliance in order to take early countermeasures that do not lead to damage in the household appliance.

Aus der DE 196 50 915 A1 ist ein flüssigkeitsführendes Hausgerät mit einer Programmsteuerung und mit wenigstens einem Leitwertsensor, durch welchen der Leitwert einer im Wirkungsbereich des Hausgerätes befindlichen Flüssigkeit bestimmbar ist. Dabei ist ausgehend von dem erfassten Leitwert der weitere Programmablauf einstellbar.From the DE 196 50 915 A1 is a liquid-conducting domestic appliance with a program control and with at least one conductivity sensor, by which the conductance of a liquid located in the sphere of action of the domestic appliance can be determined. In this case, starting from the detected conductance, the further program sequence can be set.

Aus der DE 102 60 160 A1 ist eine Geschirrspülmaschine bekannt, welche einen Sensor aufweist, der so ausgebildet und angeordnet ist, dass er einen Funktionsparameter, wie z.B. die Härte, der Spülflüssigkeit während des Ablaufs des Spülprogramms misst. Dabei kann das Sensorergebnis dazu genutzt werden, den Spülprogrammablauf zu beeinflussen. Ebenso kann das Sensorergebnis mit abgespeicherten Daten verglichen werden und im Bedarfsfall ein Signal an den Benutzer erzeugt werden.From the DE 102 60 160 A1 For example, a dishwashing machine is known which has a sensor which is designed and arranged to measure a functional parameter, such as the hardness, of the rinsing liquid during the course of the rinsing program. In this case, the sensor result can be used to influence the Spülprogrammablauf. Likewise, the sensor result can be compared with stored data and, if necessary, a signal to the user can be generated.

Der Erfindung liegt daher die Aufgabe zugrunde, bei wasserführenden Haushaltgeräten der eingangs genannten Art den Benutzer bereits über den Härtegrad zu informieren, bei dem eine Beschädigungen durch Verkalkung im wasserführenden Haushaltgerät droht, jedoch noch keine Beschädigungen im wasserführenden Haushaltgerät aufgetreten sind.The invention is therefore based on the object in water-bearing household appliances of the type mentioned already inform the user about the degree of hardness, which threatens damage due to calcification in water-bearing household appliance, but no damage in the water-bearing appliance have occurred.

Diese Aufgabe wird dadurch gelöst, dass bei Erfassung eines unzulässigen oberhalb oder unterhalb eines Grenzwerts liegenden Härtegrads die Signaleinrichtung aktiviert wird.This object is achieved in that upon detection of an impermissible above or below a threshold level of hardness, the signaling device is activated.

Dadurch ist sichergestellt, dass der Benutzer durch die Signaleinrichtung informiert wird, dass der Härtegrad der Reinigungsflüssigkeit den Messwert erreicht hat, der zur Verkalkung des wasserführenden Haushaltgerätes führen könnte. Somit ist der Benutzer in der Lage, Gegenmaßnahme einzuleiten, um eine drohende Schädigung des wasserführenden Haushaltgeräts zu verhindern.This ensures that the user is informed by the signaling device that the degree of hardness of the cleaning liquid has reached the reading that could lead to calcification of the water-bearing household appliance. Thus, the user is able to take countermeasures to prevent impending damage to the water-bearing household appliance.

Nach einer bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass der Härtegrad der Flüssigkeit verändert wird, wenn die Signaleinrichtung den unzulässigen oberhalb oder unterhalb des Grenzwerts liegenden Härtegrad signalisiert.
Durch die Veränderung des Härtegrads in der Flüssigkeit wird in vorteilhafter Weise verhindert, dass das wasserführende Haushaltgerät beschädigt wird. Ebenfalls ist dann ausgeschlossen, dass Kalkflecken am zu waschenden Gut auftreten.According to a preferred embodiment of the subject matter of the invention, it is provided that the degree of hardness of the liquid is changed when the signal device signals the impermissible degree of hardness lying above or below the limit value.
By changing the degree of hardness in the liquid is advantageously prevented that the water-bearing domestic appliance is damaged. It is then also excluded that limescale occur on the material to be washed.

Bei einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung ist vorgesehen, dass der Härtegrad der Flüssigkeit durch eine externe Enthärtungsanlage derart eingestellt wird, dass dem Haushaltgerät Flüssigkeit mit einem zulässigen Härtegrad zugeführt wird.In a further advantageous embodiment of the object of the invention it is provided that the degree of hardness of the liquid is adjusted by an external water softening system such that the household appliance liquid is supplied with a permissible degree of hardness.

Der wesentliche Vorteil besteht darin, dass durch die Einstellung an der externen Enthärtungsanlage dem wasserführenden Haushaltgerät kalkfreie Flüssigkeit zugeführt wird, die Beschädigungen in dem wasserführenden Haushaltgerät und am zu waschenden Gut ausschließen.The main advantage is that lime-free liquid is supplied to the water-containing appliance by the setting on the external water softening system, which exclude damage in the water-bearing household appliance and the good to be washed.

Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass die externe Enthärtungsanlage als eine einem Gebäude zugeordnete Enthärtungsanlage ausgebildet ist.
Diese Anordnung zeichnet sich besonders dadurch aus, dass auf eine zusätzliche Enthärtungsanlage in dem wasserführenden Haushaltgerät verzichtet wird und somit Kosten in der Konstruktion und in der Montage gespart werden. Ferner ist durch den Verzicht der Enthärtungsanlage steht in dem wasserführenden Haushaltgerät mehr Raum zur Anordnung andere Bauteile zur Verfügung.According to a further preferred embodiment of the subject matter of the invention, it is provided that the external water softening system is designed as a water softening system associated with a building.
This arrangement is particularly characterized by the fact that is dispensed with an additional water softening system in the water-bearing domestic appliance and thus costs in the design and assembly can be saved. Furthermore, by the waiver of the water softening system is in the water-bearing household appliance more space for the arrangement of other components available.

Nach einer alternativen Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass dem wasserführenden Haushaltgerät über eine vorbestimmte Zeitdauer Reinigungsmittel zugeführt wird, bis die Signaleinrichtung deaktiviert wird.
Der wesentliche Vorteil besteht darin, dass auf eine Enthärtungsanlage in dem wasserführenden Haushaltgerät verzichtet wird, da das Reinigungsmittel den Härtegrad der Flüssigkeit senkt, so dass dieser im zulässigen Bereich liegt. Durch diese Maßnahme ist sichergestellt, dass Beschädigungen in dem wasserführenden Haushaltgerät und am zu waschenden Gut ausgeschlossen sind. Ferner kann der Benutzer an der Signaleinrichtung erkennen, ob genügend Reinigungsmittel der Flüssigkeit in dem wasserführenden Haushaltgerät zugeführt worden ist, da die Signaleinrichtung bei dem zulässigen Härtegrad deaktiviert wird.According to an alternative embodiment of the object of the invention it is provided that the water-conducting household appliance over a predetermined period of time detergent is supplied until the signaling device is deactivated.
The essential advantage is that it dispenses with a water softening system in the water-bearing household appliance, since the detergent lowers the degree of hardness of the liquid, so that it lies within the permissible range. This measure ensures that damage in the water-conducting household appliance and the goods to be washed are excluded. Furthermore, the user can recognize on the signaling device whether sufficient cleaning agent has been supplied to the liquid in the water-conducting household appliance, since the signaling device is deactivated at the permissible degree of hardness.

Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass das Reinigungsmittel ein Entkalkungsmittel ist.
Diese Lösung zeichnet sich besonders dadurch aus, dass das Entkalkungsmittel kostengünstig in seiner Herstellung ist.According to a further preferred embodiment it is provided that the cleaning agent is a descaling agent.
This solution is particularly characterized by the fact that the descaling agent is inexpensive to produce.

Entsprechend einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass bei Erfassung des unzulässigen oberhalb oder unterhalb des Grenzwerts liegenden Härtegrads eine der Signaleinrichtung zugeordnete Beleuchtungsvorrichtung durch die Steuer- und/oder Regelungseinrichtung aktiviert wird.
Diese Lösung bietet den Vorteil, das die Information des unzulässigen oberhalb oder unterhalb des Grenzwertes liegenden Härtegrads mittels der Beleuchtungsvorrichtung visualisiert wird. Durch die Visualisierung erkennt der Benutzer, dass er Gegenmaßnahmen zur Reduzierung des Härtegrades einleiten muss, um die Lebensdauer des wasserführenden Haushaltgerätes zu verlängern. Ferner zeichnen sich Beleuchtungsvorrichtungen, dadurch aus, dass sie kostengünstig in ihrer Herstellung sind.According to a further preferred embodiment, it is provided that upon detection of the impermissible degree of hardness lying above or below the limit value, a lighting device associated with the signal device is activated by the control and / or regulating device.
This solution offers the advantage that the information of the impermissible degree of hardness lying above or below the limit value is visualized by means of the lighting device. By visualizing the user recognizes that he must take countermeasures to reduce the degree of hardness in order to extend the life of the water-bearing household appliance. Furthermore, lighting devices are characterized by the fact that they are inexpensive to manufacture.

Nach einer alternativen Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass bei Erfassung des unzulässigen oberhalb oder unterhalb des Grenzwerts liegenden Härtegrads eine der Signaleinrichtung zugeordnete akustische Vorrichtung durch die Steuer- und/oder Regelungseinrichtung aktiviert wird.
Diese Lösung bietet den Vorteil, dass der Benutzer Informationen über den unzulässigen oberhalb oder unterhalb des Grenzwerts liegenden Härtegrad erhält, wenn er sich nicht im Nahbereich des wasserführenden Haushaltgerätes aufhält. Dadurch ist sichergestellt, dass der Benutzer bei dem Ertönen eines Signals Maßnahmen einleiten kann, um die Lebensdauer des wasserführenden Haushaltgerätes zu verlängern.According to an alternative embodiment of the subject matter of the invention, it is provided that upon detection of the impermissible degree of hardness lying above or below the limit value, an acoustic device assigned to the signal device is activated by the control and / or regulating device.
This solution has the advantage that the user receives information about the impermissible degree of hardness above or below the limit value, if he is not in the Close range of the water-conducting household appliance stops. This ensures that the user can take measures when sounding a signal to extend the life of the water-bearing household appliance.

Entsprechend einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass die Vorrichtung zur Erfassung des Härtegrads als optischer Sensor ausgebildet ist.
Diese Lösung zeichnet sich besonders dadurch aus, dass der optische Sensor sehr kostengünstig in seiner Herstellung ist und die Messwerte zur Bestimmung genauer erfasst werden, da der Sender weniger anfällig gegen Störungen hervorgerufen durch die umströmende Flüssigkeit ist.According to a further preferred embodiment, it is provided that the device for detecting the degree of hardness is designed as an optical sensor.
This solution is characterized in particular by the fact that the optical sensor is very inexpensive to manufacture and the measured values are more accurately detected for determination, since the transmitter is less susceptible to disturbances caused by the liquid flowing around.

Nach einer alternativen Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass die Vorrichtung zur Erfassung des Härtegrads als Leitwertsensor ausgebildet ist
Der Vorteil dieser Lösung liegt darin, dass der Leitwertsensor kostengünstig in seiner Herstellung ist.According to an alternative embodiment of the object of the invention, it is provided that the device for detecting the degree of hardness is designed as a conductivity sensor
The advantage of this solution is that the conductivity sensor is inexpensive to manufacture.

Die Erfindung ist in einer nachfolgenden Beschreibung anhand eines in der Zeichnung vereinfacht dargestellten Ausführungsbeispiels erläutert. Es zeigen:

Figur 1
eine schematisch dargestellte Geschirrspülmaschine gemäß einer ersten Ausführungsform, mit einer um eine horizontale Achse schwenkbar gelagerte Tür, auf deren Außenseite eine akustische Signaleinrichtung angeordnet ist, und
Figur 2
eine schematisch dargestellte Geschirrspülmaschine gemäß einer zweiten Ausführungsform, mit einer um eine horizontale Achse schwenkbar gelagerte Tür, an deren Außenseite eine Anzeigeeinrichtung angeordnet ist.
The invention is explained in a following description with reference to an embodiment shown in simplified form in the drawing. Show it:
FIG. 1
a schematically illustrated dishwasher according to a first embodiment, with a pivotally mounted about a horizontal axis door on the outside of an acoustic signaling device is arranged, and
FIG. 2
a schematically illustrated dishwasher according to a second embodiment, with a pivotally mounted about a horizontal axis door, on the outside of a display device is arranged.

In den Figuren Fig. 1 und Fig. 2 sind zwei im wesentlichen ähnlich ausgeführte erfindungsgemäße Geschirrspülmaschinen 1, 1' mit einem Gehäuse 2, 2' gezeigt. Ein nicht gezeigter Behandlungsraum ist über Tür 3, 3' zugänglich, die an einer horizontalen Achse schwenkbar gelagert ist. Die Tür 3, 3' weist eine nicht gezeigte Innentür und eine Außentür 4, 4' auf, an der eine Blende 5, 5' angeordnet ist. Auf der Blende 5, 5' sind Bedienelemente 6, 6' angeordnet, über die man ein Programm mit den einzelnen Programmschritten Vorspülen, Reinigen, Zwischenspülen, Klarspülen, Trocknen wählen kann. Die Außentür 4, 4' weist zum Öffnen und Schließen eine an der Blende 5, 5' angeordnete Betätigungshandhabe 7, 7' auf. Des Weiteren ist an der Blende 5, 5' eine Signaleinrichtung 8, 8' zur Ausgabe von Informationen eines unzulässigen oberhalb oder unterhalb eines Grenzwerts liegenden Härtegrads angeordnet.In the figures Fig. 1 and Fig. 2 show two substantially similar executed dishwasher according to the invention 1, 1 'with a housing 2, 2' shown. A treatment room, not shown, is accessible via door 3, 3 ', which is pivotally mounted on a horizontal axis. The door 3, 3 'has an inner door, not shown, and an outer door 4, 4', on which an aperture 5, 5 'is arranged. On the panel 5, 5 'are Operating elements 6, 6 'are arranged, via which one can select a program with the individual program steps pre-rinsing, cleaning, intermediate rinsing, rinsing, drying. The outer door 4, 4 'has for opening and closing a on the aperture 5, 5' arranged actuating handle 7, 7 '. Furthermore, a signal device 8, 8 'for outputting information of an impermissible degree of hardness above or below a limit value is arranged on the diaphragm 5, 5'.

In Figur 1 ist die Signaleinrichtung 8 als akustische Signaleinrichtung ausgebildet. Die akustische Signaleinrichtung ist in dem dargestellten Ausführungsbeispiel als ein Lautsprecher ausgebildet, der bei dem unzulässigen oberhalb oder unterhalb des Grenzwertes liegenden Härtegrad ein akustisches Signal ausgibt.
Bei dem unter Figur 2 gezeigten Ausführungsbeispiel ist die Signaleinrichtung 8' als Anzeigeeinrichtung ausgebildet. Auf der Anzeigeeinrichtung 8' wird bei dem unzulässigen oberhalb oder unterhalb des Grenzwertes liegenden Härtegrad ein Schriftzug visualisiert. Alternativ könnte die Signaleinrichtung 8' auch als eine LED ausgebildet sein, die den unzulässigen oberhalb oder unterhalb des Grenzwerts liegenden Härtegrad durch das Anzeigen einer Farbe kenntlich macht.
Die Signaleinrichtung 8, 8' ist mit einer nicht gezeigten Steuer- und Regelungselektronik verbunden, die von einer nicht gezeigten Vorrichtung zur Erfassung eines Härtegrades einer Flüssigkeit ein Messsignal erhält. Die Vorrichtung zur Erfassung eines Härtegrads in einer Flüssigkeit ist als optischer Sensor ausgebildet. Alternativ kann die Vorrichtung zur Erfassung eines Härtegrads als ein Leitwertsensor ausgebildet sein.In FIG. 1 the signal device 8 is designed as an acoustic signal device. The acoustic signal device is formed in the illustrated embodiment as a speaker that outputs an acoustic signal at the impermissible above or below the threshold level of hardness.
In the under FIG. 2 the embodiment shown, the signal device 8 'is designed as a display device. A lettering is visualized on the display device 8 'at the impermissible degree of hardness lying above or below the limit value. Alternatively, the signaling device 8 'could also be designed as an LED which makes the impermissible degree of hardness above or below the limit mark by indicating a color.
The signaling device 8, 8 'is connected to a not shown control and regulation electronics, which receives a measurement signal from a device, not shown, for detecting a degree of hardness of a liquid. The device for detecting a degree of hardness in a liquid is designed as an optical sensor. Alternatively, the device for detecting a degree of hardness can be designed as a conductivity sensor.

Während des Betriebes misst der optische Sensor den Härtegrad einer Flüssigkeit, die der Geschirrspülmaschine 1, 1' zugeführt wird. Um den Härtegrad zu erfassen, weist der optische Sensor einen Glaskörper auf, an dem sich kleine Kalkpartikel, die mindestens im mikroskopischen Bereich des Härtegrads liegen, absetzen. Ein Sender des optischen Sensors sendet Lichtwellen in gleichen Frequenzen durch den Glaskörper zu einem ebenfalls dem optischen Sensor zugeordneten Empfänger. Der Empfänger misst die ankommende Lichtintensität und leitet das Messsignal an die Steuer- und Regelungselektronik weiter.
Es gibt zwei Bereiche, die dem Härtegrad der Flüssigkeit zugeordnet sind und zwar den Bereich in dem ein unzulässiger Härtegrad herrscht und einen Bereich in dem ein zulässiger Härtegrad herrscht. Im zulässigen Bereich wird die Geschirrspülmaschine nicht beschädigt und es liegen im wesentlichen keine Kalkpartikel in der Flüssigkeit vor, so dass der Empfänger die vom Sender gesendete maximale Lichtintensität empfängt.
Im unzulässigen Bereich kann die Geschirrspülmaschine oder das zu waschende Gut beschädigt werden und es liegen Kalkpartikel in der Flüssigkeit vor. Die Kalkpartikel setzen sich während des Betriebes der Geschirrspülmaschine auf dem Glaskörper des optischen Sensors ab, so dass der Empfänger nicht die vom Sender gesendete maximale Lichtintensität, sondern nur einen verringerten Anteil der vom Sender gesendeten Lichtintensität empfängt. Mikroskopische Kalkpartikel liegen zwar im unzulässigen Bereich des Härtegrads vor, haben aber keinen Einfluss auf die Lebensdauer der Geschirrspülmaschine. Daher sind Beschädigungen in der Geschirrspülmaschine und am zu waschenden Gut ausgeschlossen.
Der Grenzwert im unzulässigen Bereich des Härtegrads ist dadurch definiert, dass sich erste Ablagerungen von mikroskopisch kleinen Kalkpartikel am Glaskörper des optischen Sensors bilden. Der Empfänger des optischen Sensors empfängt in diesem Fall nicht die maximale Lichtintensität die vom Sender gesendet wird. Steigt nun der Härtegrad der Flüssigkeit, so erhöht sich die Anzahl der Kalkpartikel und der Härtegrad ist oberhalb des Grenzwerts. Dadurch empfängt der Empfänger eine geringere Lichtintensität und die Signaleinrichtung wird über die Steuer- und Regelungselektronik aktiviert, so dass der Benutzer Maßnahmen zur Entkalkung der Flüssigkeit einleiten kann.
Eine alternative Möglichkeit den Grenzwert zu definieren, besteht darin, den optischen Sensor werkseitig zu kalibrieren. Der Grenzwert ist dann dadurch definiert, dass die vom Empfänger empfangene Lichtintensität equivalent zu einer werkseitig bestimmten Anzahl von am Glaskörper angeordneten Kalkpartikeln ist. Ist die Anzahl der Kalkpartikel in der Flüssigkeit geringer, so setzen sich weniger mikroskopische Kalkpartikel am Glaskörper ab und der Empfänger empfängt nicht die maximale Lichtintensität, jedoch eine höhere Lichtintensität als die bei der werkseitig eingestellten Kalibrierung. In diesem Fall ist der unzulässige Härtegrad unterhalb des Grenzwerts im unzulässigen Bereich angeordnet. Es sei darauf hingewiesen, dass die mikroskopischen Kalkpartikel keinen Einfluss auf die Lebensdauer der Geschirrspülmaschine haben.
Im Falle, dass der optische Sensor den unzulässigen oberhalb oder unterhalb des Grenzwerts liegenden Härtegrad misst, gibt der Empfänger ein Messsignal an die Steuer- und Regelungselektronik ab.
Es ist möglich zwei optische Sensoren in der Geschirrspülmaschine anzuordnen, wobei ein optischer Sensor den unzulässigen Härtgrade über dem Grenzwert und ein andere Sensor den unzulässigen Härtegrad unter dem Grenzwert misst. Dadurch ist eine effektivere und noch sicherer Überwachung des Kalkgehalts in der Flüssigkeit gewährleistet.
Die Steuer- und Regelungselektronik steuert dann die Signaleinrichtung an, so dass der Benutzer über den erhöhten Härtegrad informiert wird. Die Information kann über das Display oder alternativ über die LED abgegeben werden, wie in Figur 1 gezeigt, oder über den Lautsprecher, wie in Figur 2 gezeigt, der ein akustisches Signal erzeugt. In beiden Fällen wird der Benutzer darüber informiert, dass er Maßnahmen einleiten muss, um den Härtegrad der Flüssigkeit zu senken. Zum Einen kann er eine externe Enthärtungsanlage, die der Geschirrspülmaschine 1, 1' zugeordnet ist, einstellen. Zum Anderen kann er der Geschirrspülmaschine 1, 1' Entkalkungsmittel zuführen, so dass der Härtegrad gesenkt wird. Nach der Durchführung dieser Maßnahmen wird die Signaleinrichtung 8, 8' von der Steuer- und Regelungselektronik deaktiviert, da der vom optischen Sensor erfasste Härtegrad im zulässigen Bereich liegt und somit keine Beschädigungen durch Kalkablagerungen entstehen können. Durch die eingeleiteten Maßnahmen der Entkalkung umfließt nun entkalte Flüssigkeit den Glaskörper des optischen Sensors, so dass die am Glaskörper angeordneten mikroskopischen Kalkpartikel fortgeschwemmt werden und der Glaskörper frei von Kalkpartikeln ist.During operation, the optical sensor measures the degree of hardness of a liquid which is fed to the dishwasher 1, 1 '. In order to detect the degree of hardness, the optical sensor has a glass body, on which small lime particles, which lie at least in the microscopic range of hardness, settle. A transmitter of the optical sensor transmits light waves in the same frequencies through the glass body to a receiver also associated with the optical sensor. The receiver measures the incoming light intensity and forwards the measurement signal to the control electronics.
There are two areas which are assigned to the degree of hardness of the liquid, namely the area in which an impermissible degree of hardness prevails and an area in which a permissible degree of hardness prevails. The dishwasher does not work within the permissible range damaged and there are essentially no lime particles in the liquid, so that the receiver receives the maximum light intensity transmitted by the transmitter.
In the impermissible area, the dishwasher or the goods to be washed can be damaged and lime particles are present in the liquid. The lime particles settle on the glass body of the optical sensor during operation of the dishwasher, so that the receiver does not receive the maximum light intensity transmitted by the transmitter, but only a reduced proportion of the light intensity transmitted by the transmitter. Although microscopic lime particles are present in the impermissible degree of hardness, they have no influence on the life of the dishwasher. Therefore, damage in the dishwasher and the goods to be washed are excluded.
The limit value in the impermissible range of the degree of hardness is defined by the fact that first deposits of microscopically small lime particles form on the glass body of the optical sensor. The receiver of the optical sensor in this case does not receive the maximum light intensity transmitted by the transmitter. If the degree of hardness of the liquid increases, the number of lime particles increases and the degree of hardness is above the limit value. As a result, the receiver receives a lower light intensity and the signaling device is activated via the control and regulating electronics, so that the user can initiate measures for decalcifying the liquid.
An alternative way of defining the limit is to calibrate the optical sensor at the factory. The limit value is then defined by the fact that the light intensity received by the receiver is equivalent to a factory-determined number of lime particles arranged on the glass body. If the number of lime particles in the liquid is lower, less microscopic lime particles are deposited on the glass body and the receiver does not receive the maximum light intensity, but a higher light intensity than that in the factory-set calibration. In this case, the impermissible degree of hardness is below the limit in the impermissible range. It should be noted that the microscopic lime particles have no effect on the life of the dishwasher.
In the event that the optical sensor measures the impermissible degree of hardness above or below the limit value, the receiver sends a measuring signal to the control electronics.
It is possible to arrange two optical sensors in the dishwasher, with one optical sensor exceeding the impermissible degree of hardness above the limit and another Sensor measures the impermissible degree of hardness below the limit value. This ensures a more effective and even more reliable monitoring of the lime content in the liquid.
The control electronics then controls the signaling device, so that the user is informed of the increased degree of hardness. The information can be delivered via the display or alternatively via the LED as in FIG. 1 shown, or over the speaker, as in FIG. 2 shown, which generates an acoustic signal. In both cases, the user is informed that he must take measures to lower the degree of hardness of the liquid. On the one hand, he can set an external water softening system associated with the dishwasher 1, 1 '. On the other hand, it can supply descaling agent to the dishwasher 1, 1 ', so that the degree of hardness is lowered. After carrying out these measures, the signaling device 8, 8 'is deactivated by the control and regulating electronics, since the degree of hardness detected by the optical sensor is within the permissible range and thus can not be damaged by calcium deposits. Due to the decalcifying measures introduced, decanted liquid now flows around the glass body of the optical sensor, so that the microscopic lime particles arranged on the glass body are swept away and the glass body is free of lime particles.

Claims (10)

  1. Method for softening water in a water-conducting domestic appliance (1, 1') operated using fluid, having an apparatus for detecting a degree of hardness in the fluid and having a signal facility (8, 8') actuated by a control and/or regulating facility for outputting information about the degree of hardness, wherein the signal facility (8, 8') is activated on detection of an non-permissible degree of hardness above or below a limit value, characterised in that the limit value is set so that a user is informed by the signal facility that damage to the water-conducting domestic appliance has not yet occurred but the degree of hardness of the cleaning fluid has reached a measurement value, which may cause damage to the water-conducting domestic appliance.
  2. Method according to claim 1, characterised in that the degree of hardness of the fluid is changed when the signal facility (8, 8') signals the non-permissible degree of hardness above or below the limit value.
  3. Method according to claim 1 or 2, characterised in that the degree of hardness of the fluid is set by an external softening system so that fluid with a permissible degree of hardness is supplied to the domestic appliance.
  4. Method according to claim 3, characterised in that the external softening system is configured as a softening system assigned to a building.
  5. Method according to claim 1 or 2, characterised in that cleaning agent is supplied to the water-conducting domestic appliance (1, 1') for a predetermined time period until the signal facility (8, 8') is deactivated.
  6. Method according to claim 5, characterised in that the cleaning agent is a decalcifying agent.
  7. Method according to one of claims 1 to 6, characterised in that an illumination apparatus assigned to the signal facility (8, 8') is activated by the control and/or regulating facility on detection of the non-permissible degree of hardness above or below the limit value.
  8. Method according to one of claims 1 to 6, characterised in that an acoustic apparatus assigned to the signal facility (8, 8') is activated by the control and/or regulating facility on detection of the non-permissible degree of hardness above or below the limit value.
  9. Method according to one of claims 1 to 8, characterised in that the apparatus for detecting the degree of hardness is configured as an optical sensor.
  10. Method according to one of claims 1 to 8, characterised in that the apparatus for detecting the degree of hardness is configured to as a conductance sensor.
EP05797269.7A 2005-02-03 2005-10-21 Method for operating a water-using domestic appliance Not-in-force EP1845833B1 (en)

Priority Applications (1)

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Applications Claiming Priority (2)

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DE102005005040A DE102005005040A1 (en) 2005-02-03 2005-02-03 Method for operating a water-conducting household appliance
PCT/EP2005/055469 WO2006081880A1 (en) 2005-02-03 2005-10-21 Method for operating a water-using domestic appliance

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EP1845833A1 EP1845833A1 (en) 2007-10-24
EP1845833B1 true EP1845833B1 (en) 2013-07-03

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CN (1) CN1815239A (en)
DE (1) DE102005005040A1 (en)
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JP2012500685A (en) * 2008-08-27 2012-01-12 ベーエスハー ボッシュ ウント ジーメンス ハウスゲレーテ ゲゼルシャフト ミット ベシュレンクテル ハフツング How to drive a dishwasher
DE102012212638C5 (en) * 2012-07-18 2020-07-30 Premark Feg L.L.C. Dishwasher and method for operating a dishwasher
DE102015223371A1 (en) * 2015-11-26 2017-06-01 BSH Hausgeräte GmbH Sensor device for determining a property of a liquid, method for operating the sensor device and water-conducting household appliance with the sensor device

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IT1279102B1 (en) * 1995-02-01 1997-12-04 Merloni Elettrodomestici Spa WASHING MACHINE WITH ELECTRONIC CONTROL SYSTEM WITH SIMPLIFIED PROGRAMMING AND RELATIVE PROGRAMMING METHOD.
DE29611091U1 (en) 1996-06-25 1997-10-23 Aeg Hausgeraete Gmbh Liquid-carrying household appliance with program control
DE19721976B4 (en) * 1997-05-26 2008-07-24 BSH Bosch und Siemens Hausgeräte GmbH Method for determining an inadmissibly high degree of calcification in a water-conducting domestic appliance
DE19841568A1 (en) * 1997-11-26 1999-05-27 Miele & Cie Automatic regeneration of washing up machine water softener
DE19825981C2 (en) * 1998-06-10 2003-04-10 Bsh Bosch Siemens Hausgeraete Process and water-bearing household appliance for water softening
DE10011692A1 (en) * 2000-03-10 2001-09-13 Aweco Appliance Sys Gmbh & Co Method by which the water hardness in a dish or clothes washing machine is controlled to ensure optimum cleaning performance has at least one sensor in the rinse water circuit
DE10260160A1 (en) 2002-12-20 2004-07-08 BSH Bosch und Siemens Hausgeräte GmbH dishwasher

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CN1815239A (en) 2006-08-09
EP1845833A1 (en) 2007-10-24
DE102005005040A1 (en) 2006-08-10
ES2422202T3 (en) 2013-09-09
WO2006081880A1 (en) 2006-08-10

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