EP1980193A1 - Verfahren zur Reinigung des Filters eines Geschirrspülers und Geschirrspüler zur Ausführung dieses Verfahrens - Google Patents

Verfahren zur Reinigung des Filters eines Geschirrspülers und Geschirrspüler zur Ausführung dieses Verfahrens Download PDF

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Publication number
EP1980193A1
EP1980193A1 EP08104236A EP08104236A EP1980193A1 EP 1980193 A1 EP1980193 A1 EP 1980193A1 EP 08104236 A EP08104236 A EP 08104236A EP 08104236 A EP08104236 A EP 08104236A EP 1980193 A1 EP1980193 A1 EP 1980193A1
Authority
EP
European Patent Office
Prior art keywords
filter
water
collecting sump
cleaning
heating means
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.)
Withdrawn
Application number
EP08104236A
Other languages
English (en)
French (fr)
Inventor
Roberto Alessandrelli
Enrico Brambilla
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Publication of EP1980193A1 publication Critical patent/EP1980193A1/de
Withdrawn legal-status Critical Current

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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
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
    • 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
    • A47L15/4285—Water-heater arrangements

Definitions

  • the present invention refers to a method for cleaning the filter in a dishwasher, as well as a dishwasher for carrying out such method.
  • Such clogged condition of the dishwasher filter has the effect of preventing water from being duly circulated during washing and rinsing of the tableware items, as well as from being regularly let off at the end of the washing process. As it can be readily appreciated, this causes the cleaning effectiveness of the dishwashing machine to suffer a setback.
  • Such cleaning of the dishwasher filter requires a user to remove the filter from a proper accommodation thereof provided in the dishwasher, and then clean it by removing the solid organic material settled thereon directly with the hands or with the use of some appropriate tool.
  • the method for cleaning the filter of a dishwashing machine comprising a washing vessel 2 adapted to accommodate the tableware items to be washed, a collecting sump 3 provided at the bottom of the washing vessel 2 and adapted to be filled with water, a washing or circulation pump 4 and a drain pump 5, both of them fluidly connected to the collecting sump 3, and at least one filter 6 arranged in the collecting sump 3 for filtering the water being circulated and let off by said pumps, includes the steps of:
  • the dishwashing machine adapted to carry out the above-cited method - as generally indicated at 1 in the Figures - is provided with top and bottom rotating spray arms 8, 9, connected via respective water delivery ducts 10, 11 to the circulation pump 4, for washing the tableware items.
  • the washing vessel 2 is adapted to receive water being let into it from the water supply line via a proper water-supply duct 12.
  • an electromagnetic valve 13 is provided to control the inflow of the water from the water supply line, so as to enable pre-established amounts of water to be each time filled into the sump 3.
  • the dishwashing machine further comprises heating means 7 provided to overheat the filter when the collecting sump 3 is empty, i.e. has no water inside it.
  • These heating means 7 are adapted to heat the filter up to such a temperature as to cause the organic material retained in the filter to be burnt and reduced to ashes.
  • said heating means 7 are adapted to overheat the filter 6 by radiation.
  • the filter 6 may further be made of a heat-conductive material so as to enhance both the heat efficiency and the effectiveness in overheating the filter 6, thereby enabling the organic material to be reduced to ashes in a very quick manner.
  • the heating means 7 may comprise one or several electric heating elements of the sheathed type, duly arranged in the collecting sump close to the filter to be overheated. These same sheathed-type heating elements are also used to heat up the washing and rinsing water circulated in the washing vessel through the rotating spray arms 8, 9, and through the collecting sump 3.
  • the heating means 7 are arranged in contact with a filter 6 made of a heat-conductive material, so that the same filter is heated by the heating means by conduction.
  • the latter may be comprised of at least an annular sheathed-type heating element coiled into a plurality of turns round the outer surface of a filter provided in the form of a perforated cylindrical body made of heat-conductive material, as illustrated by way of example in Figure 1 .
  • the heating means 7 may be provided in the form of a film heater applied on to a heat-conductive, perforated support acting as the filter.
  • This film heater may for instance be made of an insulated steel plate with a resistor applied to it according to known film technology.
  • Such heating means 7 may be either specially provided to solely heat up the filter 6 or be provided so as to be also used - at least partially and in at least some of the phases of the washing cycle - to heat up the water circulated in the washing vessel 2 through the rotating spray arms 8, 9, and through the collecting sump 3 during the regular operation of the dishwashing machine.
  • the method according to the present invention calls therefore for the heating means to be energized and operated when the collecting sump 3 is empty, i.e. when there is no water in it. Under these conditions, the heating means 7 heat up the filter to a temperature at which the organic residues settled on the same filter during the previous washing cycles performed by the machine are eventually burnt and reduced to ashes.
  • the filter 6 is duly cleaned and the risk of clogging is totally eliminated. Further, all the unpleasant odours produced by the organic material settled on the filter 6 are completely eliminated as well.
  • the method comprise the step of delivering a pre-established amount of water into the collecting sump 3, and operating the drain pump 5 in view of causing said water to rush through the collecting sump 3 so as to flush the filter 6 and remove the ashes of the burnt organic material off the same filter.
  • the ashes of the burnt organic material can be removed from the filter 6 by means of the water flow, which occur during normal pre-washing or washing phase of the washing cycle.
  • the dishwashing machine is provided with a filter self-cleaning feature, which can be selected through the actuation of proper input and setting controls that may for instance be provided on the front panel of the dishwasher machine.
  • the dishwashing machine will then automatically activate - through proper control means - a specially designed programme that carries out the filter cleaning method according to the present invention.
  • the filter self-cleaning feature may also be provided to be carried out in an alternative method, in which the filter is overheated by convection by the heated-up water filling the collecting sump 3.
  • Such alternative method for cleaning the filter of a dishwashing machine comprising a washing vessel 2 adapted to accommodate the tableware items to be washed, a collecting sump 3 provided at the bottom of the washing vessel 2 and adapted to be filled with water, a washing or circulation pump 4 and a drain pump 5, both of them fluidly connected to the collecting sump 3, and at least one filter 6 arranged in the collecting sump 3 for filtering the water being circulated and let off by said pumps, respectively, includes the steps of:
  • the heating means 7 are arranged in the collecting sump 3 and they may be provided to either heat up the water in the collecting sump 3 to the sole purpose of carrying out the filter self-cleaning feature of the filter 6 or they can be used to also heat up the water circulating in the collecting sump 3 during the different washing cycles that can be selected for the dishwashing machine to perform.
  • the filter self-cleaning feature may be selected by correspondingly actuating appropriate input and setting controls that may for instance be provided on the front panel of the dishwashing machine.
  • the dishwashing machine will then automatically activate - through proper control means - a specially designed programme that carries out this alternative filter cleaning method according to the present invention.
  • this filter self-cleaning feature may be provided as to be able to be performed automatically by the dishwashing machine after a predetermined number of washing cycles completed by it.
  • the dishwashing machine may be provided so as to warn the user - through proper light or sound indicating means - that the filter self-cleaning feature needs to be activated, wherein this may for instance occur on the basis of the number of washing cycles that have been carried out by the same machine.

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  • Washing And Drying Of Tableware (AREA)
EP08104236A 2006-05-30 2006-05-30 Verfahren zur Reinigung des Filters eines Geschirrspülers und Geschirrspüler zur Ausführung dieses Verfahrens Withdrawn EP1980193A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06114728A EP1862104A1 (de) 2006-05-30 2006-05-30 Verfahren zur Reinigung des Filters einer Geschirrspülmachine und Geschirrspülmachine zur Durchführung dieses Verfahrens.

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP06114728A Division EP1862104A1 (de) 2006-05-30 2006-05-30 Verfahren zur Reinigung des Filters einer Geschirrspülmachine und Geschirrspülmachine zur Durchführung dieses Verfahrens.

Publications (1)

Publication Number Publication Date
EP1980193A1 true EP1980193A1 (de) 2008-10-15

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP06114728A Withdrawn EP1862104A1 (de) 2006-05-30 2006-05-30 Verfahren zur Reinigung des Filters einer Geschirrspülmachine und Geschirrspülmachine zur Durchführung dieses Verfahrens.
EP08104236A Withdrawn EP1980193A1 (de) 2006-05-30 2006-05-30 Verfahren zur Reinigung des Filters eines Geschirrspülers und Geschirrspüler zur Ausführung dieses Verfahrens

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06114728A Withdrawn EP1862104A1 (de) 2006-05-30 2006-05-30 Verfahren zur Reinigung des Filters einer Geschirrspülmachine und Geschirrspülmachine zur Durchführung dieses Verfahrens.

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130319458A1 (en) * 2012-06-04 2013-12-05 Samsung Electronics Co., Ltd. Dishwasher
KR20130136354A (ko) * 2012-06-04 2013-12-12 삼성전자주식회사 식기세척기
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US10653291B2 (en) 2011-06-20 2020-05-19 Whirlpool Corporation Ultra micron filter for a dishwasher
US11839340B2 (en) 2021-08-06 2023-12-12 Haier Us Appliance Solutions, Inc. Dishwashing appliance clogged drain line prevention

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101645040B1 (ko) * 2010-03-31 2016-08-02 엘지전자 주식회사 식기 세척기 및 그 제어 방법
DE102013110974A1 (de) * 2013-03-19 2014-09-25 Hanning Elektro-Werke Gmbh & Co. Kg Reinigungsvorrichtung für Küchengeräte und Pumpensystem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150478A1 (de) * 1984-01-05 1985-08-07 INDUSTRIE ZANUSSI S.p.A. Geschirrspüler mit selbstreinigendem Pumpenschutzfilter
DE19951838A1 (de) * 1999-10-28 2001-05-10 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einem Spülbehälter
EP1224902A2 (de) * 2001-01-18 2002-07-24 CANDY S.p.A. Heizvorrichtung für eine Geschirrspülmaschine

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DE1428358A1 (de) * 1964-12-16 1968-11-14 Braun Ag Geschirrspuelmaschine mit im Kreislauf gefuehrtem Spuelwasser
DE3635778C2 (de) * 1986-10-21 1994-08-25 Bosch Siemens Hausgeraete Einrichtung zur Heizstabhalterung
IT1197983B (it) * 1986-11-13 1988-12-21 Candy Elettrodomestici Ciclo di lavaggio per macchine lavatrici, in particolare lavastoviglie e macchina lavatrice operante secondo tale ciclo

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0150478A1 (de) * 1984-01-05 1985-08-07 INDUSTRIE ZANUSSI S.p.A. Geschirrspüler mit selbstreinigendem Pumpenschutzfilter
DE19951838A1 (de) * 1999-10-28 2001-05-10 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einem Spülbehälter
EP1224902A2 (de) * 2001-01-18 2002-07-24 CANDY S.p.A. Heizvorrichtung für eine Geschirrspülmaschine

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US9375129B2 (en) 2009-12-21 2016-06-28 Whirlpool Corporation Rotating filter for a dishwashing machine
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US10779703B2 (en) 2009-12-21 2020-09-22 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9211047B2 (en) 2009-12-21 2015-12-15 Whirlpool Corporation Rotating filter for a dishwashing machine
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9572473B2 (en) 2010-12-03 2017-02-21 Whirlpool Corporation Dishwasher with unitary wash module
US9532696B2 (en) 2010-12-03 2017-01-03 Whirlpool Corporation Dishwasher with unitary wash module
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US9532697B2 (en) 2010-12-03 2017-01-03 Whirlpool Corporation Dishwasher with unitary wash module
US9364131B2 (en) 2010-12-13 2016-06-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US9538898B2 (en) 2011-05-16 2017-01-10 Whirlpool Corporation Dishwasher with filter assembly
US9700196B2 (en) 2011-05-16 2017-07-11 Whirlpool Corporation Dishwasher with filter assembly
US11882977B2 (en) 2011-05-16 2024-01-30 Whirlpool Corporation Dishwasher with filter assembly
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US9167950B2 (en) 2011-05-16 2015-10-27 Whirlpool Corporation Dishwasher with filter assembly
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US10314457B2 (en) 2011-06-20 2019-06-11 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US10178939B2 (en) 2011-06-20 2019-01-15 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US10813525B2 (en) 2011-06-20 2020-10-27 Whirlpool Corporation Ultra micron filter for a dishwasher
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US10653291B2 (en) 2011-06-20 2020-05-19 Whirlpool Corporation Ultra micron filter for a dishwasher
US10058227B2 (en) 2011-06-20 2018-08-28 Whirlpool Corporation Filter assembly for a dishwasher
US10070769B2 (en) 2011-06-20 2018-09-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US10058228B2 (en) 2012-02-27 2018-08-28 Whirlpool Corporation Soil chopping system for a dishwasher
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US10376128B2 (en) 2012-05-30 2019-08-13 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US11134825B2 (en) 2012-05-30 2021-10-05 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US10076226B2 (en) 2012-05-30 2018-09-18 Whirlpool Corporation Rotating filter for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9615719B2 (en) * 2012-06-04 2017-04-11 Samsung Electronics Co., Ltd. Dishwasher
EP2671497A3 (de) * 2012-06-04 2018-07-25 Samsung Electronics Co., Ltd Geschirrspüler
CN103445740B (zh) * 2012-06-04 2018-03-06 三星电子株式会社 洗碗机
US20130319458A1 (en) * 2012-06-04 2013-12-05 Samsung Electronics Co., Ltd. Dishwasher
CN103445740A (zh) * 2012-06-04 2013-12-18 三星电子株式会社 洗碗机
KR20130136354A (ko) * 2012-06-04 2013-12-12 삼성전자주식회사 식기세척기
US9962060B2 (en) 2012-10-23 2018-05-08 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9826882B2 (en) 2012-10-23 2017-11-28 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9757008B2 (en) 2012-10-23 2017-09-12 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9649007B2 (en) 2012-10-23 2017-05-16 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US11839340B2 (en) 2021-08-06 2023-12-12 Haier Us Appliance Solutions, Inc. Dishwashing appliance clogged drain line prevention

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