EP1830688A1 - Appareil menager utilisant de l'eau et procede pour le faire fonctionner - Google Patents

Appareil menager utilisant de l'eau et procede pour le faire fonctionner

Info

Publication number
EP1830688A1
EP1830688A1 EP05797125A EP05797125A EP1830688A1 EP 1830688 A1 EP1830688 A1 EP 1830688A1 EP 05797125 A EP05797125 A EP 05797125A EP 05797125 A EP05797125 A EP 05797125A EP 1830688 A1 EP1830688 A1 EP 1830688A1
Authority
EP
European Patent Office
Prior art keywords
filter element
water
impurities
household appliance
operating state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05797125A
Other languages
German (de)
English (en)
Other versions
EP1830688B1 (fr
Inventor
Egbert Classen
Helmut Jerg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1830688A1 publication Critical patent/EP1830688A1/fr
Application granted granted Critical
Publication of EP1830688B1 publication Critical patent/EP1830688B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • A47L15/4202—Water filter means or strainers
    • A47L15/4206—Tubular filters

Definitions

  • the invention relates to a water-conducting household appliance, in particular a dishwasher, with at least one substantially closed water circulation, in which rinsing liquid is circulated in accordance with a program control unit, wherein the rinsing liquid is conveyed during the circulation for filtering impurities through a filter element.
  • the invention further relates to a method for operating a water-conducting household appliance.
  • rinsing liquid When operating a dishwasher, depending on the degree of soiling of the items to be cleaned, larger and smaller impurities are removed from the items to be washed by the rinsing liquid.
  • known dishwashers In order to prevent rinsing liquid already being circulated during a rinsing program section from being applied again to the items to be washed, known dishwashers have arranged more or less complex filter arrangements in the area of the rinsing pan or the sump.
  • a filter arrangement mounted in the sump of the dishwasher often consists of a coarse sieve which filters out large-diameter contaminants from the rinsing liquid, a fine sieve whose mesh diameter is in the range from 0.9 to 1.1 mm, and a microsieve downstream of the fine sieve , whose mesh size is about 0.3 mm, to filter even small impurities from the rinsing liquid.
  • the purpose of such a filter arrangement is, during the circulation of the rinsing liquid, preciselyfiltem the largest possible proportion of impurities from the rinsing liquid.
  • a disadvantage of the arrangement just described is that in practice only a portion of the impurities held in the filter assembly can be removed from the dishwasher during pumping. Therefore, it is necessary that at least some of the filter elements of the filter assembly are temporarily removed manually by a user of the dishwasher and cleaned manually. Around To spare the user of a dishwasher such unpleasant activity, it would be desirable if the filter assembly of the self-cleaning type would be.
  • a dishwasher with such a self-cleaning filter is known for example from US 3,179,116.
  • the filter consists of a helical spring, wherein the distances of superimposed spiral sections are variably adjustable.
  • the spring When the rinsing liquid is circulated from the rinsing trough to the rinsing arms, the spring has a small length and thus small spiral section distances, so that contaminants detached from the ware are filtered by the spiral spring.
  • the length of the coil spring is increased, whereby the distance between two adjacent spring sections increases, so that the adhering to the coil spring impurities flushed by the pumped flushing liquid into the interior of the coil spring and finally fed to the water drain.
  • the changing of the length of the coil spring is made by water pressure generated in the lines, which is dependent on the direction of a circulation pump. During the circulation, only a slight water pressure is generated in a line connected to the spiral spring, whereby the coil spring remains shortened in length. When pumping, however, a high pressure is generated in the line connected to the spiral spring, whereby the coil spring is extended by a lever mechanism.
  • a disadvantage of the described arrangement is that the self-cleaning of the filter can only take place when changing from one to the next wash program section. However, if the filter is acted upon during a Spülprogrammabitess with a large amount of impurities, it can not be circulated by the pump enough rinse liquid for applying the dishes. The proposed arrangement therefore accepts that the cleaning effect of individual rinse program sections may be lowered.
  • a device for wet washing garments which has a designed as a gap filter lint filter and a fine filter.
  • the lint filter consists of wires running parallel to one another and is arranged such that a liquid inlet opening above the upper end of the wire layer and one of two liquid outlet openings optionally immediately behind located at the bottom of the wire layer.
  • the other outlet opening of the split filter leads to the inlet side of the feed pump and is located at any point of the bottom portion of the lint filter housing.
  • the slit filter makes it possible to slip along the parallel wires to the lower end of the wire layer in front of the closable liquid outlet opening in the successive passing of the washing water in several program sections supplied Feus. From there, the impurities (fluff) at the end of the program sections by opening the liquid outlet through the effluent wash water flushed into the sewer.
  • the fine filter only serves to retain washed out of the garments detergent in this.
  • DE-OS 2 249 603 and DE-OS 29 22 549 disclose filters for large-scale industrial use, which have self-cleaning properties due to their variable filter spacings or diameters.
  • the object of the present invention is to provide a water-conducting household appliance, in particular a dishwasher, which makes a manual cleaning of a filter element used for retaining impurities redundant, wherein the qualitative characteristics of the household appliance should be optimized in terms of energy consumption and cleaning performance. Furthermore, a method for operating such a water-conducting household appliance should be specified.
  • a further water cycle is provided in the water-conducting domestic appliance, through which the rinsing liquid is circulated in accordance with the program control unit when the filter element is covered with impurities to cause the soiling of the filter element.
  • the provision of a further water circulation makes it possible in an advantageous manner to carry out the self-cleaning of the filter element even during a wash program section, without having to carry out a pumping of the washing liquid currently being used in the household appliance.
  • the provision of the further water cycle further reliably prevents contaminants detached from the filter element from migrating into the closed water loop, thereby avoiding the settling of these dissolved contaminants on the items to be washed.
  • the filter element is installed on or in a sump of the dishwasher such that it is well bathed by the rinsing liquid flowing or conveyed in the further water circuit. This ensures that all or at least a large part of the impurities that have settled on the filter element can be solved by the rinsing fluid circulated in the further water cycle.
  • the filter element has a variable mesh or gap width for providing a first and a second operating state, wherein the filter element in the first operating state, the filtering of impurities from the impurities in the water circulation carries out and in the second operating state, the release of the in the filter element trapped impurities when flowing through the funded by the further water circulation rinsing allows.
  • the filter element has a variable mesh or gap width for providing a first and a second operating state, wherein the filter element in the first operating state, the filtering of impurities from the impurities in the water circulation carries out and in the second operating state, the release of the in the filter element trapped impurities when flowing through the funded by the further water circulation rinsing allows.
  • a spatially uniform layer of the filtration material is formed, which has a large absorption capacity and enables a high degree of cleaning of the rinsing liquid during circulation in the closed water cycle.
  • the flushing capacity is not adversely affected by an increasingly clogging filter element, since a filter element with constant filter performance is created by actuating the further water circuit.
  • the further filter element is arranged in a collecting container. This makes it possible to collect the promoted in the wider water cycle impurities.
  • the further filter element has a variable mesh or gap width for providing a first and a second operating state, wherein the further filter element in the first operating state, the filtering of impurities promoted by the further water circulation Spülillonkeit and takes place in the second operating state Loosen the trapped in the other filter element impurities when flowing around the other filter element with rinsing fluid of the other water cycle allows.
  • the further filter element is designed to be self-cleaning. This ensures a constant filtering performance of the second filter element during operation of the further water cycle.
  • the further water circuit is integrated into a water drain, so that the conveyed in the further water circulation rinse liquid can be supplied according to the program control unit either the dishwasher or the wastewater drain.
  • the further water circuit is advantageously operated such that the further filter element is in the first operating state when the rinsing liquid is circulated in the household appliance. Accordingly, the further filter element is in the second operating state in which this allows a cleaning, wherein the impurities are supplied to the water drain. After a " store the contaminants in the further filter element or the collecting container, the impurities are transported from the household appliance.
  • a dishwasher according to the invention with at least one substantially closed water circulation in the rinsing liquid in accordance with a program control unit is circulated, wherein the rinsing fluid during the circulation for filtering impurities by at least one filter element is conveyed, wherein the at least one filter element consists of thread elements, which in a tensioned state for cleaning the rinsing liquid and in a relaxed state for cleaning the filter element are arranged.
  • the thread elements are arranged on holding elements and in the tensioned state substantially in a plane or in a curved shape, for. B. cylindrical shape arranged.
  • the inventive method for operating a water-conducting household appliance, in particular a dishwasher, comprising a multiple program sections washing program comprising the following steps:
  • the filter element is operated during the course of the wash program in a first operating state in which this filtering the flushing liquid of impurities of the closed Water cycle takes over.
  • the program control unit or upon detection of a defined occupancy of the filter element with impurities of the further water cycle is activated and brought the filter element in a second operating state for detachment of impurities present in or on it.
  • the second filter element is operated in activated further water cycle in its first operating state to free the conveyed in the further water circulation rinsing liquid from impurities.
  • the further filter element after completion of the washing program or in accordance with the program control unit in a second Melzu- spent, in which the impurities located on or in the further filter element are flushed out of the further filter element by the rinsing liquid conveyed in the further water cycle.
  • the rinsing liquid conveyed in the further water cycle is supplied to the water outlet during the second operating state of the further filter element.
  • the water-conducting household appliance according to the invention thus advantageously makes it possible to carry out a self-cleaning of the filter element of the closed water cycle even during a wash program section instead of basically waiting for the wash program end, as proposed in the prior art.
  • the cleaning performance during a Spülprogrammabitess be kept at a consistently high level without the water-bearing household appliance additional fresh water would have to be supplied.
  • FIG. 1 shows a schematic representation of a water-conducting domestic appliance designed as a dishwasher with a further water cycle
  • FIGS. 2a, 2b show a schematic illustration of a filter element which can be used by way of example in the domestic appliance shown in FIG. 1 in a side view and a cross section, wherein the filter element is shown in a first operating state, and
  • 3a, 3b is a schematic representation of an example used in the household appliance shown in FIG. 1 filter element in a side view and a cross section, wherein the filter element is shown in a second operating state.
  • a dishwasher 1 is shown in a schematic view.
  • the dishwasher 1 essentially comprises a washing compartment 2, in which not shown is arranged Spülgutsniklauf 6, a (not shown in the figure) water inlet and a water outlet 11.
  • the items to be washed is arranged in the washing compartment 2 between washing or spraying 3.
  • the sump 5 belongs to the Spülflüs- stechniksniklauf 6, in which the rinsing liquid 7 required for a washing process is circulated.
  • the sump 5 is removed via a line 8 rinsing liquid and passed through a filter element 14 to a pump 9.
  • the flushing liquid is led by the pump 9 via lines 10 to the washing arms 3 and sprayed by them into the flushing space 2.
  • the rinsing liquid 7 then passes through the rinsing tank 4 back into the sump 5.
  • the water outlet 11 is connected, via which the rinsing liquid can be derived.
  • the dishwasher 1 may have further, not shown in the figure elements, such as a device for the addition of detergent, a water softening system, sensors and the like.
  • FIGS. 2 and 3 show a self-cleaning filter element.
  • FIGS. 2 and 3 show a first operating state, in which a filtering of the conveyed through it rinsing liquid is effected.
  • FIG. 3 shows the filter element in a second operating state in which self-cleaning is possible.
  • the filter elements shown in the figures are traversed perpendicular to the sheet plane.
  • the filter element has holding elements 32 arranged in a housing 30 formed with guides 31, between which thread elements 33, e.g. made of metal, a plastic or other material, are arranged.
  • thread elements 33 e.g. made of metal, a plastic or other material
  • the distance can be defined by fastening the thread elements 33 in the holding elements 32.
  • Fig. 2b it can be seen that all thread elements 33 lie in a plane, whereby a good filtering effect is ensured.
  • the thread elements 33 can relax in the manner shown in the figure, whereby the distances are increased in more or less random manner.
  • the impurities held on or in it can then be rinsed out.
  • the self-cleaning process of the filter 14 can either be controlled by a program control unit (not shown in the figures) or upon detection of a defined occupancy of the filter element 14. With increasing occupancy of the filter element 14, the funded by the pump 9 flushing liquid is reduced. By the measured after the filter element 14 funded amount of flushing liquid can then be closed to the assignment of the filter element.
  • the filter element 14 For cleaning the filter element 14, as described in connection with FIG. 3, the filter element 14 is brought into its second operating state.
  • a further pump 13 is set in motion, which promotes the flushing liquid 7 located in the sump 5 by a further water circuit 15.
  • the pump 13 is located in the further water circuit 15, which also has a collecting container 16, in which a further filter element 17 is arranged.
  • On the output side is the Sump 16 via a valve 18 selectively connected to the water outlet 11 or a line 20 which promotes circulating in the further water circulation 15 rinsing liquid back into the sump 5.
  • the filter element 14 In order to be able to effect a self-cleaning of the filter element 14, it has to be flowed around in a suitable manner by the rinsing liquid conveyed through the further water circuit 15. In practice, the filter element 14 will therefore be arranged at a suitable location in the conduit 8 or directly on or in the sump 5.
  • the detached from the filter element 14 impurities are collected via the pump 13 and the line 19 through the further filter element 17, which is preferably also carried out self-cleaning.
  • the funded by the further water circulation 15 rinsing liquid is thus cleaned at the outlet of the collecting container 16, and, if the water cycle was actuated during a Spülprogrammabitess, fed to the sump 5.
  • the further water circuit 15 can be deactivated, at the same time the filter element 14 being returned to its first operating position. Subsequently, the interrupted rinse program section can be continued.
  • the rinsing liquid cleaned by the further filter element 17 could be used for the next rinsing program section, so that the supply of fresh water could be dispensed with.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Domestic Plumbing Installations (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un appareil ménager utilisant de l'eau, en particulier un lave-vaisselle (1), comprenant au moins un circuit hydraulique (6) sensiblement fermé, dans lequel le liquide de nettoyage circule selon les indications d'une unité de commande de programmation. Le liquide de nettoyage est débité, pendant sa circulation, lors d'un filtrage d'impuretés au moyen d'un élément filtre (14). L'invention concerne également un autre circuit hydraulique (15), à travers lequel le liquide de nettoyage circule en fonction de l'unité de commande, lorsque l'élément filtre (14) est recouvert d'impuretés, ceci permettant d'effectuer un décrassage de l'élément filtre (14).
EP05797125.1A 2004-12-23 2005-10-20 Appareil menager utilisant de l'eau et procede pour le faire fonctionner Not-in-force EP1830688B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062242A DE102004062242A1 (de) 2004-12-23 2004-12-23 Wasserführendes Haushaltsgerät und Verfahren zum Betreiben desselben
PCT/EP2005/055406 WO2006069830A1 (fr) 2004-12-23 2005-10-20 Appareil menager utilisant de l'eau et procede pour le faire fonctionner

Publications (2)

Publication Number Publication Date
EP1830688A1 true EP1830688A1 (fr) 2007-09-12
EP1830688B1 EP1830688B1 (fr) 2013-06-12

Family

ID=35709033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05797125.1A Not-in-force EP1830688B1 (fr) 2004-12-23 2005-10-20 Appareil menager utilisant de l'eau et procede pour le faire fonctionner

Country Status (9)

Country Link
US (3) US7909941B2 (fr)
EP (1) EP1830688B1 (fr)
JP (1) JP2008525072A (fr)
KR (1) KR20070089708A (fr)
CN (1) CN200987658Y (fr)
BR (1) BRPI0519206A2 (fr)
DE (1) DE102004062242A1 (fr)
RU (1) RU2405404C2 (fr)
WO (1) WO2006069830A1 (fr)

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ATE510487T1 (de) * 2007-08-08 2011-06-15 Electrolux Home Prod Corp Geschirrspüler
JP5029215B2 (ja) * 2007-08-24 2012-09-19 パナソニック株式会社 食器洗い機
DE102011015188A1 (de) * 2010-03-29 2011-09-29 Herbert Kannegiesser Gmbh Verfahren zur Nassbehandlung, insbesondere zum Reinigen, von Gegenständen
PL2499954T3 (pl) * 2011-03-17 2017-10-31 Electrolux Home Products Corp Nv Zmywarka z dwustabilnym filtrem
CN104342875A (zh) * 2013-07-26 2015-02-11 海尔集团技术研发中心 洗衣机及其控制方法
DE102017217801A1 (de) * 2017-10-06 2019-04-11 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät und Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts
DE102019203809B3 (de) * 2019-03-20 2020-07-02 E.G.O. Elektro-Gerätebau GmbH Wasserführendes Haushaltsgerät und Verfahren zu seinem Betrieb
DE102021209568A1 (de) 2021-08-31 2023-03-02 E.G.O. Elektro-Gerätebau GmbH Filtervorrichtung für ein wasserführendes Haushaltsgerät, wasserführendes Haushaltsgerät und Verfahren zum Reinigen der Filtervorrichtung
DE102022117810A1 (de) * 2022-07-15 2024-01-18 Illinois Tool Works Inc. Spülmaschine mit schmutzaustragsystem

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Also Published As

Publication number Publication date
US20110114122A1 (en) 2011-05-19
BRPI0519206A2 (pt) 2008-12-30
JP2008525072A (ja) 2008-07-17
WO2006069830A1 (fr) 2006-07-06
US7909941B2 (en) 2011-03-22
EP1830688B1 (fr) 2013-06-12
WO2006069830A8 (fr) 2007-08-16
US20130228197A1 (en) 2013-09-05
US8574376B2 (en) 2013-11-05
RU2007121897A (ru) 2009-01-27
CN200987658Y (zh) 2007-12-12
US8663393B2 (en) 2014-03-04
KR20070089708A (ko) 2007-08-31
DE102004062242A1 (de) 2006-07-13
US20080149138A1 (en) 2008-06-26
RU2405404C2 (ru) 2010-12-10

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