EP2201883B1 - Geschirrspülmaschine mit Vernebler und Geschirrbehandlungsverfahren - Google Patents

Geschirrspülmaschine mit Vernebler und Geschirrbehandlungsverfahren Download PDF

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Publication number
EP2201883B1
EP2201883B1 EP08425795.5A EP08425795A EP2201883B1 EP 2201883 B1 EP2201883 B1 EP 2201883B1 EP 08425795 A EP08425795 A EP 08425795A EP 2201883 B1 EP2201883 B1 EP 2201883B1
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EP
European Patent Office
Prior art keywords
washing
dishwashing machine
nebulisation
washing liquid
program
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Not-in-force
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EP08425795.5A
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English (en)
French (fr)
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EP2201883A1 (de
Inventor
Silvano Fumagalli
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Candy SpA
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Candy SpA
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Priority to EP08425795.5A priority Critical patent/EP2201883B1/de
Priority to ES08425795T priority patent/ES2743236T3/es
Publication of EP2201883A1 publication Critical patent/EP2201883A1/de
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Publication of EP2201883B1 publication Critical patent/EP2201883B1/de
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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0015—Washing processes, i.e. machine working principles characterised by phases or operational steps other treatment phases, e.g. steam or sterilizing phase
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/02—Pressurised cleaning liquid delivered by a pump

Definitions

  • the present invention relates to a dishwashing machine of the type comprising a washing container to receive dishes to be washed, a spraying device adapted to spray a non-nebulised washing liquid on the dishes arranged in the washing container, and a heating device (10) adapted to heat the washing liquid.
  • a dishwashing machine provided with washing liquid nebulisation means.
  • the present invention further relates to a dish treatment method by means of a dishwashing machine.
  • the washing liquid is usually introduced in the washing container by means of spraying devices and, after the last washing cycle, a final rinsing step is performed, in which a brightener substance can be added to the washing liquid.
  • the dishes are wetted by a spraying device through a washing liquid previously mixed with a detergent.
  • Dishwashing machines with spraying devices are known, in which the washing liquid is distributed in the washing container by means of rotating sprayer arms. Due to the usually rectangular shape of the washing container, and the circular spray zone of the rotating sprayer arms, the washing liquid does not result to be evenly distributed in all the zones of the washing container.
  • Stationary spraying devices or nozzles are further known, the invariable spray directions of which cannot however ensure an even washing of all the dishes arranged in the washing container.
  • the publication EP 0 487 474 A1 discloses, for example, a dishwashing machine in which the washing liquid containing a detergent substance is nebulised in the washing container via an ultrasound generator.
  • DE 10 2006 055 345 A1 proposes to combine the ultrasound nebuliser known from EP 0 487 474 A1 with a blower to forcedly convey the nebulised washing liquid in the washing container.
  • a blower to forcedly convey the nebulised washing liquid in the washing container.
  • an electric blower involves high manufacturing costs, a reduction of the space available to contain the dishes to be washed, as well as an additional and undesired energy consumption.
  • FR2717670 discloses a prior art dishwashing device which can be considered a closest state of the art for the present invention.
  • object of the present invention is to improve the prior art dishwashing machines and the known washing methods for the dishes, so as to improve the washing efficacy thereof and to reduce the water and electric power consumption thereof.
  • a dishwashing machine is generally indicated with the reference numeral 1.
  • the dishwashing machine 1 comprises at least one washing container 2 adapted to receive dishes 3 to be washed and closable through a port (not shown).
  • a spraying device 4 is provided, for example, a pump 5 with a delivery tube 6, and one or more spraying nozzles 7 and/or spraying rotors 8.
  • the spraying device 4 is configured to spray a non-nebulised washing liquid onto the dishes 3 arranged in the washing container 2.
  • a nebuliser device 9 is further provided to nebulise at least part of the washing liquid with the aim of producing an aerosol flow and to convey such nebulised washing liquid (aerosol flow) onto the dishes 3 contained in the washing container 2.
  • the dishwashing machine 1 further comprises a heating device adapted to heat the washing liquid, for example, an electric resistance 10 arranged in a washing liquid collection tank 11.
  • the collection tank 11, preferably formed in a lower zone of the washing container 2 or under the washing container 2, is connected to the spraying device 4 and, optionally, to the nebulisation device 9 to allow that they withdraw the cold or heated washing liquid necessary for the treatment of the dishes.
  • the dishwashing machine 1 further comprises control means, for example, an electronic control unit 12, so configured as to allow the selection of a dish treatment program amongst a plurality of treatment programs.
  • control means for example, an electronic control unit 12, so configured as to allow the selection of a dish treatment program amongst a plurality of treatment programs.
  • the plurality of treatment programs comprises at least one washing program with at least one washing step in which the heating device 10 is actuated so as to heat the washing liquid, and in which the spraying device 4 is actuated so as to insert the heated washing liquid in the washing container 2, or in other words, so as to spray the heated washing liquid onto the dishes 3 arranged in the washing container 2.
  • the treatment programs also comprise at least one stand-by program with one or more nebulisation steps, in which the nebuliser device 9 is actuated so as to introduce nebulised washing liquid in the washing container 2 (applying it on the dishes 3), and in which during the entire stand-by program, the heating device 10 remains deactivated.
  • control means 12 are configured so as to perform the nebulisation steps of the stand-by program in a time-independent manner from the carrying out of the washing steps of the washing programs.
  • control means 12 are configured so as to deactivate also the spraying device 14 during the carrying out of the stand-by program.
  • the dishes awaiting to be washed are treated with a washing liquid cold aerosol, and in this manner are prepared and kept ready for a successive actual washing with hot washing liquid.
  • This allows always awaiting for the complete filling of the dishwashing machine, independently from the soils and incrustation type, before carrying out the washing program and subjecting the dishes awaiting to washing to an optionally repeated pre-treatment through washing liquid aerosol, so as to improve the washing program efficacy and to reduce the duration, the electric energy and water consumptions thereof.
  • control means are configured so that, during the nebulisation steps of the stand-by program, the nebuliser device 9 is automatically deactivated when the port is opened, and the nebuliser device 9 is automatically reactivated when the previously opened port is closed.
  • this allows carrying out the treatment through washing liquid aerosol with a closed container, increasing the treatment efficacy and minimizing the escape of washing liquid aerosol into the surrounding environment.
  • the control means 12 can further comprise signalling means, for example, LCD, LED display, or the like, which indicate to the user the carrying out of a nebulisation step during the stand-by program.
  • signalling means for example, LCD, LED display, or the like, which indicate to the user the carrying out of a nebulisation step during the stand-by program.
  • the user who wants to load further dishes in the dishwashing machine can decide whether to wait for the end of the treatment with washing liquid aerosol or to temporarily discontinue such treatment by opening the port.
  • control means 12 are so configured as to actuate the nebulisation device 9, during the carrying out of the stand-by program, when the port has remained closed for a predetermined period of time, preferably from 2 to 10 minutes, still more preferably from 5 to 10 minutes, after the last opening thereof.
  • a predetermined period of time preferably from 2 to 10 minutes, still more preferably from 5 to 10 minutes, after the last opening thereof.
  • control means 12 are so configured as to actuate the nebulisation device 9 in a discontinuous manner during the carrying out of the stand-by program.
  • control means 12 deactivate the nebulisation device 9 during a rest step between two consecutive nebulisation steps, in which such rest step can have a duration of from 1 to 8 hours, preferably from 1 to 4 hours, still more preferably from 2 to 4 hours.
  • the nebulisation steps of the stand-by program have a duration of from 1 minute to 1 hour, preferably from 5 minutes to 30 minutes, still more preferably from 5 minutes to 10 minutes.
  • the nebuliser device 9 With the aim of carrying out the nebulisation steps during the stand-by program, it is particularly advantageous to provide the nebuliser device 9 with a piezoelectric aerosol generator 13.
  • Such piezoelectric aerosol generator 13 can be arranged within a nebulisation container 14 connected through a supply tube 15 to the delivery duct 6 of the spraying device 4 and through a dispensing duct or port 16 within the washing container 2 ( Fig. 1 ).
  • the nebulisation container 14 is connected through the supply tube 15 to a duct with air head directly connectable to the water network by the interposition of an electrovalve, for example, the supply duct of a water softener device.
  • the nebulisation device 9 dispensing duct 16 is connected to a sprayer nozzle 7 of the spraying device 4 so that the same sprayer nozzle 7 introduces both the sprays of non-nebulised washing liquid during the washing steps of the washing programs and the aerosol flow of nebulised washing liquid during the nebulisation steps of the stand-by program.
  • a device can be provided within the machine 1 to receive a detergent substance and to bring such detergent substance to the washing liquid intended to be nebulised during the nebulisation steps of the stand-by program.
  • the dishwashing machine 1 By means of the dishwashing machine 1 hereto described, it is possible to carry out a dish treatment method aimed at a water, electric energy, and detergent saving, for a given amount of washed dishes, and to improve the result of washing in the sense of a more complete removal of the food residues from the dishes.
  • the method contemplates to arrange the dishes to be washed in the dishwashing machine, to await for the essentially complete filling of the dishwashing machine with dishes to be washed, and to wash the dishes only when the dishwashing machine results to be essentially filled with dishes, through heating washing liquid and spraying the heated washing liquid onto the dishes.
  • the method provides for nebulisation of washing liquid and the conveyance of the nebulised washing liquid onto the dishes, without heating the washing liquid.
  • the nebulisation of the washing liquid when awaiting for the filling of the dishwashing machine occurs in a time-independent manner from the carrying out of the washing of the dishes.
  • the nebulisation is discontinued when the port is opened during the awaiting for the complete filling of the dishwashing machine and is resumed only after the closure of the port.

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  • Washing And Drying Of Tableware (AREA)

Claims (16)

  1. Geschirrspülmaschine (1), welche aufweist:
    - zumindest einen Spülbehälter (2), der dazu ausgelegt ist, zu spülendes Geschirr (3) aufzunehmen, und der durch eine Öffnung verschließbar ist;
    - eine Sprühvorrichtung (4), die dazu ausgelegt ist, eine nicht vernebelte Spülflüssigkeit auf das in dem Geschirrbehälter (2) angeordnete Geschirr (3) zu sprühen;
    - eine Verneblungsvorrichtung (9), die dazu ausgelegt ist, zumindest ein Teil der Spülflüssigkeit zu vernebeln und die so vernebelte Spülflüssigkeit in den Spülbehälter (2) zu fördern;
    - eine Heizvorrichtung (10), die dazu ausgelegt ist, die Spülflüssigkeit zu heizen;
    - Steuermittel (12), die konfiguriert sind, um zu erlauben, ein Geschirrbehandlungsprogramm unter einer Mehrzahl von Behandlungsprogrammen auszuwählen,
    wobei die Mehrzahl von Behandlungsprogrammen zumindest ein Spülprogramm mit zumindest einem Spülschritt aufweist, wobei während diesem Spülschritt die Heizvorrichtung (10) aktiviert wird, um die Spülflüssigkeit zu heizen und die Sprühvorrichtung (4) aktiviert wird, um die erhitzte Spülflüssigkeit auf das Geschirr (3) in dem Geschirrbehälter (2) zu sprühen,
    wobei die Behandlungsprogramme zumindest ein Warteprogramm mit einem oder mehreren Verneblungsschritten aufweisen, wobei während diesen Verneblungsschritten die Verneblungsvorrichtung (9) aktiviert wird, um vernebelte Spülflüssigkeit in den Spülbehälter (2) einzuführen, und wobei die Heizvorrichtung (10) während des gesamten Warteprogramms deaktiviert wird,
    dadurch gekennzeichnet, dass die Steuermittel (12) konfiguriert sind, um die Verneblungsvorrichtung (9) während der Ausführung des Warteprogramms zu aktiveren, wenn die Öffnung für eine vorbestimmte Zeitspanne nach ihrem letzten Öffnen geschlossen geblieben ist.
  2. Die Geschirrspülmaschine (1) nach Anspruch 1, wobei die vorbestimmte Zeitspanne im Bereich von 2 bis 10 Minuten oder im Bereich von 5 bis 10 Minuten ist.
  3. Die Geschirrspülmaschine (1) nach Anspruch 1 oder 2, wobei die Steuermittel (12) konfiguriert sind, um die Ausführung des einen oder der mehreren Verneblungsschritte des Warteprogramms in einer Weise zu steuern, die zeitlich von der Ausführung der Spülschritte in den Spülprogrammen unabhängig ist.
  4. Die Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, wobei die Steuermittel (12) konfiguriert sind, um die Sprühvorrichtung (4) während der Ausführung des Warteprogramms zu deaktivieren.
  5. Die Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, wobei die Steuermittel (12) so konfiguriert sind, dass während der Verneblungsschritte des Warteprogramms,
    - die Verneblungsvorrichtung (9) automatisch deaktiviert wird, wenn die Öffnung geöffnet wird; und
    - die Verneblungsvorrichtung (9) automatisch reaktiviert wird, wenn die Öffnung geschlossen wird.
  6. Die Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, wobei die Steuermittel (12) Signalmittel aufweisen, die dem Benutzer die Ausführung eines Verneblungsschritts während des Warteprogramms anzeigen.
  7. Die Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, wobei die Steuermittel (12) konfiguriert sind, um während der Ausführung des Warteprogramms die Verneblungsvorrichtung (9) diskontinuierlich zu aktivieren.
  8. Die Geschirrspülmaschine (1) nach dem vorhergehenden Anspruch, wobei während der Ausführung des Warteprogramms die Steuermittel (12) die Verneblungsvorrichtung (9) während eines Pauseschritts zwischen zwei aufeinanderfolgenden Verneblungsschritten deaktiveren.
  9. Die Geschirrspülmaschine (1) nach dem vorhergehenden Anspruch, wobei der Pauseschritt eine Dauer von 1 bis 8 Stunden hat, bevorzugt von 1 bis 4 Stunden, noch weiter bevorzugt von 2 bis 4 Stunden.
  10. Die Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, wobei die Verneblungsschritte des Warteprogramms eine Dauer von 1 Minute bis 1 Stunde haben, bevorzugt von 5 Minuten bis 30 Minuten, noch weiter bevorzugt von 5 Minuten bis 10 Minuten.
  11. Die Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, wobei die Verneblungsvorrichtung (9) einen piezoelektrischen Aerosolgenerator (13) aufweist.
  12. Die Geschirrspülmaschine (1) nach dem vorhergehenden Anspruch, wobei der piezoelektrische Aerosolgenerator (13) in einem Verneblungsbehälter (14) angeordnet ist, der über ein Zuführrohr (15) mit einer Ausgabeleitung (6) der Sprühvorrichtung (4) und über eine Spendeleitung oder -Öffnung (16) in dem Spülbehälter (2) verbunden ist.
  13. Die Geschirrspülmaschine (1) nach dem vorhergehenden Anspruch, wobei die Spendeleitung (16) der Verneblungsvorrichtung (9) mit einer Sprühdüse (7) der Sprühvorrichtung (4) verbunden ist, so dass diese Sprühdüse (7) sowohl Spritzer von nicht-vernebelter Spülflüssigkeit während der Spülschritte der Spülprogramme als auch den während der Verneblungsschritte des Warteprogramms vernebelten Spülaerosolfluss einführt.
  14. Die Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, die eine Vorrichtung zur Aufnahme einer Detergenz-Substanz aufweist, sowie Mittel, um die Detergenz-Substanz der Spülflüssigkeit zuzufügen, die während der Verneblungsschritte des Warteprogramms vernebelt werden soll.
  15. Geschirrbehandlungsverfahren mittels einer Geschirrspülmaschine, wobei die Geschirrspülmaschine aufweist:
    - zumindest einen Spülbehälter (2), der dazu ausgelegt ist, zu spülendes Geschirr (3) aufzunehmen, und der durch eine Öffnung verschließbar ist;
    - eine Sprühvorrichtung (4), die dazu ausgelegt ist, eine nicht vernebelte Spülflüssigkeit auf das in dem Geschirrbehälter (2) angeordnete Geschirr (3) zu sprühen;
    - eine Verneblungsvorrichtung (9), die dazu ausgelegt ist, zumindest ein Teil der Spülflüssigkeit zu vernebeln und die so vernebelte Spülflüssigkeit in den Spülbehälter (2) zu fördern;
    - eine Heizvorrichtung (10), die dazu ausgelegt ist, die Spülflüssigkeit zu heizen;
    - Steuermittel (12), die konfiguriert sind, um zu erlauben, ein Geschirrbehandlungsprogramm unter einer Mehrzahl von Behandlungsprogrammen auszuwählen,
    wobei die Mehrzahl von Behandlungsprogrammen aufweist:
    - zumindest ein Spülprogramm mit zumindest einem Spülschritt, wobei während diesem Spülschritt die Heizvorrichtung (10) aktiviert wird, um die Spülflüssigkeit zu heizen, und die Sprühvorrichtung (4) aktiviert wird, um erhitzte Spülflüssigkeit auf das Geschirr (3) in dem Geschirrbehälter (2) zu sprühen,
    - zumindest ein Warteprogramm mit einem oder mehreren Verneblungsschritten, wobei während diesen Verneblungsschritten die Verneblungsvorrichtung (9) aktiviert wird, um vernebelte Spülflüssigkeit in den Spülbehälter (2) einzuführen, und wobei die Heizvorrichtung (10) während des gesamten Warteprogramms deaktiviert wird,
    wobei das Verfahren aufweist:
    - Anordnen von zu spülendem Geschirr in der Geschirrspülmaschine;
    - Abwarten, bis die Geschirrspülmaschine mit zu spülendem Geschirr im Wesentlichen vollständig gefüllt ist;
    - wenn die Geschirrspülmaschine mit Geschirr im Wesentlichen gefüllt ist, Spülen des Geschirrs mittels erhitzter Waschflüssigkeit und Sprühen der erhitzten Waschflüssigkeit auf das Geschirr;
    - während des Abwarteschritts, bis die Geschirrspülmaschine im Wesentlichen vollständig gefüllt ist, Aktivieren einer Verneblungsvorrichtung (9) der Geschirrspülmaschine, um Spülflüssigkeit zu vernebeln und die vernebelte Spülflüssigkeit auf das Geschirr zu fördern, ohne die Spülflüssigkeit zu erhitzen, während das Spülen abgewartet wird,
    wobei das Verfahren gekennzeichnet ist durch die Verwendung der Steuermittel (12) zum Aktivieren der Verneblungsvorrichtung (9) während der Ausführung des Warteprogramms, wenn die Öffnung für eine vorbestimmte Zeitspanne nach ihrem letzten Öffnen geschlossen geblieben ist.
  16. Das Verfahren nach Anspruch 15, das den Schritt aufweist, die Spülflüssigkeitsverneblung auszuführen, wenn das Füllen abgewartet wird, in einer Weise, die von der Ausführung des Geschirrspülens zeitlich unabhängig ist.
EP08425795.5A 2008-12-17 2008-12-17 Geschirrspülmaschine mit Vernebler und Geschirrbehandlungsverfahren Not-in-force EP2201883B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08425795.5A EP2201883B1 (de) 2008-12-17 2008-12-17 Geschirrspülmaschine mit Vernebler und Geschirrbehandlungsverfahren
ES08425795T ES2743236T3 (es) 2008-12-17 2008-12-17 Máquina lavavajillas con nebulizador y procedimiento de tratamiento de vajillas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08425795.5A EP2201883B1 (de) 2008-12-17 2008-12-17 Geschirrspülmaschine mit Vernebler und Geschirrbehandlungsverfahren

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EP2201883A1 EP2201883A1 (de) 2010-06-30
EP2201883B1 true EP2201883B1 (de) 2019-05-29

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150374201A1 (en) * 2013-03-22 2015-12-31 Panasonic Intellectual Property Management Co., Ltd. Dishwashing machine
CN106140642A (zh) * 2015-04-16 2016-11-23 苏州旋特自动化科技有限公司 餐具不易破碎的洗涤设备
GB201507289D0 (en) * 2015-04-29 2015-06-10 Reckitt Benckiser Brands Ltd Method of cleaning tableware
DE102017208440B4 (de) * 2017-05-18 2019-05-02 BSH Hausgeräte GmbH Verfahren zum Betreiben einer Geschirrspülmaschine und Geschirrspülmaschine

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Publication number Priority date Publication date Assignee Title
US5202582A (en) * 1991-07-25 1993-04-13 Whirlpool Corporation Electronic control for a dishwasher
US20030168080A1 (en) * 2002-03-07 2003-09-11 Raches Scott D. Fast interrupt of dishwasher hand sensor

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SE9003730D0 (sv) 1990-11-23 1990-11-23 Electrolux Ab Saett att transportera vaetska fraan en vaetskesamling till en yta paa ett foeremaal
FR2717670A1 (fr) * 1994-03-25 1995-09-29 Beauchamp Bruno Dispositif de trempage et de rincage pour lave vaisselle.
JP3988709B2 (ja) * 2003-10-15 2007-10-10 松下電器産業株式会社 食器洗い機
JP4075842B2 (ja) * 2004-04-12 2008-04-16 松下電器産業株式会社 食器洗い機
DE102006055345A1 (de) 2006-11-23 2008-05-29 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspüler mit einem System zur Zerstäubung von Spülflüssigkeit und Verfahren zum Betrieb desselben
DE102007029502B3 (de) * 2007-06-25 2008-10-23 Miele & Cie. Kg Steuerung für einen Geschirrspüler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5202582A (en) * 1991-07-25 1993-04-13 Whirlpool Corporation Electronic control for a dishwasher
US20030168080A1 (en) * 2002-03-07 2003-09-11 Raches Scott D. Fast interrupt of dishwasher hand sensor

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ES2743236T3 (es) 2020-02-18
EP2201883A1 (de) 2010-06-30

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