EP2478818B1 - Lave-vaisselle avec dispositif de nettoyage du filtre - Google Patents

Lave-vaisselle avec dispositif de nettoyage du filtre Download PDF

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Publication number
EP2478818B1
EP2478818B1 EP12150074.8A EP12150074A EP2478818B1 EP 2478818 B1 EP2478818 B1 EP 2478818B1 EP 12150074 A EP12150074 A EP 12150074A EP 2478818 B1 EP2478818 B1 EP 2478818B1
Authority
EP
European Patent Office
Prior art keywords
dishwasher
cleaning device
sieve
pump
pump sump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12150074.8A
Other languages
German (de)
English (en)
Other versions
EP2478818A2 (fr
EP2478818A3 (fr
Inventor
Werner Haltmayer
Mathias Herrmann
Stefan Kasbauer
Claus KÖTHER
Martin Weissenburger
Mark Woldenberg
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL12150074T priority Critical patent/PL2478818T3/pl
Publication of EP2478818A2 publication Critical patent/EP2478818A2/fr
Publication of EP2478818A3 publication Critical patent/EP2478818A3/fr
Application granted granted Critical
Publication of EP2478818B1 publication Critical patent/EP2478818B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/4202—Water filter means or strainers
    • 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
    • A47L15/4246—Details of the tub
    • 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
    • A47L15/4204—Flat filters
    • 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 dishwasher, in particular household dishwasher, according to the preamble of claim 1.
  • Dishwashers have screen systems with which dirt particles are filtered out of the circulating in a hydraulic circuit of the dishwasher rinse liquid.
  • the sieve systems are usually multi-level and consist of a surface fine sieve, a coarse sieve and possibly a micro sieve. According to their designation, these sieves can filter dirt particles of different sizes out of the rinsing liquid.
  • a dishwasher known in the hydraulic circuit rinsing liquid is circulated, which is collected in a bottom-side sump, which is connected to the suction side of the circulation pump.
  • the washing chamber facing the open side of the pump pot is covered by a surface sieve which tapers in a funnel-shaped, approximately centrally disposed hollow cylindrical Grobsieb. This passes below the surface sieve in a likewise hollow cylindrical microsieve, which is surrounded by a pot wall of the sump at a distance.
  • the sieve system consisting of the flat sieve, the coarse sieve and the micro sieve becomes dirty over time, which means that the flat sieve, the coarse sieve and / or the micro sieve can become clogged with food residues or other settling particles. Due to added screen surfaces, the rinsing result is impaired, above all because of the back soiling and the reduced screening performance. Although it can sometimes be provided on the lower spray arm below the dish rack already nozzles, which are directed to the underlying flat screen. However, this also does not achieve complete flushing of the flat screen.
  • a dishwasher with recirculated rinse water by a circulating pump from a sump of the wash chamber is sucked, a suction opening covering the screen and opening into the sump openings for the flushing water drain and the fresh water inlet known.
  • a dishwashing machine comprising a washing tub equipped with a recirculation filter arranged in a flow path of the water to be sucked by a circulating pump adapted to feed at least one rotating spraying device located above the Filter is arranged, the latter consisting of a substantially flat portion which is formed with an opening which connects the interior of the washing tub directly to the suction of a drain pump, as well as a substantially cylindrical portion which surrounds said opening and from the plane Section extends downwards.
  • the impellers of the circulation and the discharge pump are mounted on a reversible drive shaft to pump the water alternately to the correct outlet when said drive shaft is actuated in a first and a second direction of rotation.
  • a water pipe of calibrated cross-section extending up to one end from the pressure chamber of the circulation pump adjoins the said filter and is suitable, in the direction of the suction of the drain pump, a jet of water through this filter and in countercurrent to said water flow path to steer when said drive shaft is actuated in said second direction of rotation to perform a discharge phase.
  • An object of the invention is to provide a dishwashing machine, in particular a household dishwasher, in which the screening capacity of the screen combination used in the dishwasher is not impaired even in continuous use.
  • the invention is based on the finding that dirt particles of a certain size and composition, such as caraway or the like, can not be removed from the sieve surface by applying the sieve surface of the flat sieve by means of spray nozzles, which are provided on the lower spray arm on the underside, but rather more pressed into the screen openings and thus solidify in it.
  • at least one cleaning device is provided according to the invention within the pump pot with which the sieve element can be cleaned. The cleaning of the screen element is thus not carried out on the sieve surface added with food residues, but rather on the side of the screen element facing away therefrom, whereby the screen element can be flushed free against the direction of flow in the flushing operation.
  • the sump of a dishwasher may preferably have a sieve combination with the above-mentioned surface sieve, a coarse sieve and a microsieve.
  • the surface sieve can cover the side of the sump which is open towards the washing compartment and can run in a funnel shape onto the hollow cylindrical coarse sieve, which is inserted approximately in the center of the sieve.
  • the coarse sieve can be extended below the surface sieve with the likewise hollow cylindrical microsieve.
  • the coarse screen is used for filtering larger dirt particles, while the fine and micro sieve is used to filter off in the rinsing liquid finely dispersed dirt particles.
  • the cleaning device according to the invention is spatially separated from the washing space by means of the surface sieve in the sump.
  • the cleaning device can therefore on the one hand ablate filter residues of the surface sieve on its underside facing away from the sieve surface, while the cleaning device can optionally additionally clean the microsieve disposed within the pump well.
  • the cleaning device can be arranged radially outside the hollow cylindrical microsieve or alternatively also radially inside the microsieve and, in this case, clean the liquid exit side of the microsieve facing away from the sieve surface.
  • the cleaning device has at least one spray nozzle, in particular a plurality of spray nozzles, which can act on the screen element mechanically by means of liquid jets.
  • spray nozzles are connected in a simple manner via at least one connecting line with the actual hydraulic circuit of the dishwasher.
  • one or more supply lines can lead from the circulation pump to the spray units arranged in the spray, that is, in particular to a arranged below the upper dish rack upper spray arm or arranged below a lower dish rack lower spray arm. From there, the rinsing liquid is sprayed onto the dishes arranged in the washing compartment. Subsequently, the rinsing liquid collects again in the sump, which is connected to the suction side of the circulation pump.
  • the cleaning device has at least one distributor pipe with a series of spray nozzles, which is connected via the connecting line to the above-described hydraulic circuit of the dishwasher.
  • the rinsing fluid circulated in the hydraulic circuit can be used at least partially in the screen cleaning according to the invention.
  • a water switch control which opens or closes depending on the switching position a flow path to the arranged in the spray chamber spraying and / or connection line.
  • the cleaning device can be activated automatically by the control electronics of the dishwasher, for example at the beginning of a rinse cycle during the pre-rinsing step or the cleaning step, in which the largest proportion of food residues is removed from the rinsing liquid.
  • the cleaning device can also be activated on the user side by manual actuation of a control element.
  • the spray nozzles of the distributor pipe are directed in the direction of the underside of the surface sieve and in the direction of the micro sieve arranged in the sump.
  • the distributor tube can extend around the microsieve essentially in an annular manner along the annular space provided in the sump.
  • the annulus may be bounded vertically upwardly by the planar screen, while the annulus may be bounded downwardly by a correspondingly shaped bottom flange of the sump.
  • the bottom flange can extend radially outward essentially starting from a hollow-cylindrical pot wall surrounding the micro-sieve and optionally pass over at the edge into an upwardly projecting annular collar, which can be covered by the opening edge region of the bottom pan of the washing container by way of example.
  • the bottom flange of the pump pot one or more fastening means, preferably locking elements, have, whereby the manifold can be releasably brought into locking connection with the sump in a simple manner.
  • the cleaning device may have any type of cleaning body, with which filter residues can be removed from the screen element.
  • a cleaning body may be a scraper with which the filter residues can be stripped off the screening element.
  • cleaning bodies can be provided which can move freely in the annular space of the pump pot. In this case, the cleaning bodies can be moved by the circular liquid flow in the annular space and thereby remove filter residues from the sieve element.
  • the cleaning bodies can in this case in the annular space in particular move transversely along the underside of the flat screen.
  • a dishwasher with a, a Spülraum limiting rinse tank 1.
  • upper and lower baskets 3, 5 are arranged.
  • spray arms 7, 8 are arranged in different spray levels, via which the items to be washed are supplied with rinsing liquid.
  • a pumping pot 11 is also provided with therein sieve assembly 10, which filters off food residues of different sizes of the circulating rinsing liquid in the rinsing operation. From a discharge port of the pump pot 11, not shown, performs a recirculation line 12 with arranged therein circulating pump 13 and a downstream water heater 14 away.
  • the circulation line 12 is fluidly connected via supply lines 15, 16 with the spray arms 7, 8.
  • the sump 11 is connected via further connecting pieces to a, connected to the water supply network fresh water supply line 17 and to a drain line 18, in which a drain pump 19 is arranged to pump rinsing liquid from the washing compartment 1.
  • the sieve assembly 10 located in the sump 11 has a surface sieve 20, a coarse sieve 21 and a micro sieve 22.
  • the flat screen 20 covers the upwardly towards the dishwasher open side of the pump pot 11 and is in accordance with the Fig. 1
  • the surface sieve 20 is usually a metal grid, which tapers in a funnel shape onto the coarse sieve 21 inserted centrally in the flat sieve 20.
  • the coarse sieve 21 is hollow-cylindrical with a coarse-meshed grid and projects beyond the sieve surface 32 (FIG. Fig. 3
  • the coarse sieve 21 is extended vertically downwards with the likewise hollow-cylindrical microsieve 22, which extends directly to the bottom 23 of the sump 11.
  • the pump pot 11 is shown by way of example in the figures as a rotationally symmetrical hollow body with the sump bottom 23 and a cylindrical pot wall 24 raised therefrom.
  • the pot wall 24 surrounds the Mikrosieb 22 with a flow gap 25 and goes according to the Fig. 3 in the axial course upwards in a laterally outwardly angled, circumferential bottom flange 25 via.
  • At the radially outer end of the bottom flange 25 is followed by an upwardly pulled ring collar 26, as shown in the Fig. 3 is shown.
  • the thus formed pump pot 11 is according to the Fig. 3 from below placed on a correspondingly formed opening edge region of the washing-tub bottom wall 9.
  • the opening edge region is stepped down with an inner edge flange 27, which may be by way of example in screw connection with the bottom flange 25 of the pump pot 11.
  • an inner edge flange 27 which may be by way of example in screw connection with the bottom flange 25 of the pump pot 11.
  • a circumferential seal 30 is inserted between a ring shoulder 29 of this gradation and the radially outer annular collar 26 of the pump pot.
  • the flat screen 20 is attached to the outer edge side, for example via screw 31 to the washing tub bottom wall 9. Between the surface sieve 20 and the bottom flange 25 of the pumping pot 11 thus results in a free annular space 33 which extends radially outward around the hollow cylindrical microsieve 22. In the rinsing operation, a circular flow sets in the annular space 33, which flows transversely along the underside 34 of the flat screen 20. In the annular space 33 below the flat screen 20 as a cleaning device according to the invention 35, a distributor pipe is additionally arranged, which has upwardly directed spray nozzles 37. The distribution pipe 35 extends according to the Fig.
  • FIG. 2 almost circular along the annulus 33 and is interrupted only over a small circle segment to provide space for the integrally formed in the bottom flange 25 connecting piece 49, which are part of the leading to the upper and lower spray arms 7, 8 leads 15, 16.
  • Fig. 2 and 3 are at the bottom flange 25 of the Pump pot 11 additionally provided spaced from each other in the radial direction about a nip locking leg 39, between which the manifold 35 is locked.
  • the manifold 35 can thus be used during assembly from above releasably between the locking legs 39.
  • the distribution pipe 35 is in the Fig. 1 connected via a connecting line 41 with the hydraulic circuit of the dishwasher.
  • a water diverter 43 is arranged at a branch point between the supply lines 15, 16 and the connecting line 41, which in the block diagram of Fig. 1 simplified as a 3/2-way valve is shown.
  • the fluid path to the distributor pipe 35 and / or to the supply lines 15, 16 is enabled or disabled.
  • control device 45 is shown, which is in signal communication with the device components connected in the hydraulic circuit.
  • the control electronics 45 is here in the embodiment also assigned a manually operable by the user control element 47, the control electronics can activate a cleaning mode, the flushing liquid can be selectively guided through the connecting line 41 to the manifold 35 to example short, powerful sprays on the To judge the underside of the flat screen 20.
  • spray nozzles may be provided which are directed to the sieve surface of the micro strainer 22.
  • the cleaning mode can be activated automatically by means of the control electronics 45 during a rinse cycle.
  • the cleaning mode is activated in order to rinse the flat sieve 20 in a direction opposite to the normal direction of flow in the direction of the surface sieve 20.
  • the sieve cleaning according to the invention can of course be carried out after completion of the respective rinse cycle or before the start of the rinse cycle of a newly started Geschirr Cyprusprogramms, ie between two successive Geschirr Hopkinsprogrammen.
  • the cleaning device 35 on no manifold piping, but loosely arranged in the annular space 33 cleaning body.
  • the cleaning body 35 can move freely during the wash cycle in the adjoining the annular space 33 circular flow and thereby beat against the bottom 34 of the flat screen 20, whereby filter residues that settle in the screen openings, from the bottom 34 of the flat screen 20th can be removed.
  • the cleaning device 35 may also be designed as a scraper, as shown in the Fig. 4 indicated by dashed lines.
  • the scraper can move around the microsieve 22 on the outside along a circular path and, in so doing, covers the underside 34 of the flat screen 20, as a result of which the set filter residues can be removed.
  • the filter cleaning by means of such scrapers may possibly also in connection with a distributor pipe according to the invention as above to the FIGS. 1 explained with 3 expedient.

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  • Washing And Drying Of Tableware (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Claims (9)

  1. Lave-vaisselle, en particulier lave-vaisselle ménager, dans le circuit hydraulique duquel du liquide de lavage peut être déplacé au moyen d'une pompe de circulation (13) raccordée côté aspiration à un creuset de pompe (11) traversé par le liquide de lavage, lequel présente au moins un élément de criblage (20, 21, 22) qui retient les particules de saleté présentes dans le liquide de lavage, dans lequel
    • au moins un dispositif de nettoyage (35) permettant de nettoyer l'élément de criblage (20, 21, 22) est prévu dans le creuset de pompe (11),
    • le dispositif de nettoyage (35) présente au moins une conduite distributrice avec une série de buses de pulvérisation (37) reliée via au moins une conduite de raccordement (41) au circuit hydraulique du lave-vaisselle, et
    • les buses de pulvérisation (37) de la conduite distributrice sont dirigées vers un microcrible (22) disposé dans le creuset de pompe (11), lequel permet de filtrer les particules de saleté finement dispersées dans le liquide de lavage,
    caractérisé en ce que les buses de pulvérisation (37) de la conduite distributrice sont également dirigées vers le côté inférieur d'un crible de surface (20) éloigné de l'espace de lavage, lequel crible de surface couvre le côté du creuset de pompe (11) ouvert vers l'espace de lavage et/ou sépare le dispositif de nettoyage (35) de l'espace de lavage.
  2. Lave-vaisselle selon la revendication 1, caractérisé en ce que le microcrible (22) est inséré dans le crible de surface (20) du lave-vaisselle.
  3. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce qu'un microcrible (22) entouré par un espace annulaire libre (33) est prévu dans le creuset de pompe (11), dans lequel espace le dispositif de nettoyage (35) est disposé.
  4. Lave-vaisselle selon la revendication 3, caractérisé en ce que l'espace annulaire (33) est limité par le crible de surface (20) et par un flasque de fond (25) du creuset de pompe (11) dans le sens vertical.
  5. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que la conduite de raccordement (41) bifurque de conduites d'alimentation (15, 16) qui mènent le liquide de lavage de la pompe de circulation (13) vers un ou plusieurs dispositif(s) de pulvérisation (7, 8) disposés dans l'espace de lavage.
  6. Lave-vaisselle selon la revendication 5, caractérisé en ce qu'un dispositif d'aiguillage de l'eau (43) est prévu au point de bifurcation entre la ou les conduite(s) d'alimentation (15, 16) et la conduite de raccordement (41), lequel dispositif ouvre ou ferme en fonction de la position de commutation une voie d'écoulement vers les conduites d'alimentation (15, 16) et/ou vers la conduite de raccordement (41).
  7. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le dispositif de nettoyage (35) peut être activé manuellement par l'utilisateur en actionnant un élément de commande (47) et/ou automatiquement par l'électronique de commande (45) du lave-vaisselle.
  8. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le dispositif de nettoyage (35) est maintenu par un ou plusieurs moyen(s) de fixation (39) sur le creuset de pompe (11).
  9. Lave-vaisselle selon la revendication 8, caractérisé en ce que le ou les moyen(s) de fixation (39) sont en particulier des éléments d'encliquetage prévus sur le flasque de fond (25) du creuset de pompe (11) et/ou avec lesquels le dispositif de nettoyage (35) peut être relié de façon amovible.
EP12150074.8A 2011-01-21 2012-01-03 Lave-vaisselle avec dispositif de nettoyage du filtre Active EP2478818B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12150074T PL2478818T3 (pl) 2011-01-21 2012-01-03 Zmywarka do naczyń z urządzeniem do czyszczenia sita

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011002989A DE102011002989A1 (de) 2011-01-21 2011-01-21 Geschirrspülmaschine

Publications (3)

Publication Number Publication Date
EP2478818A2 EP2478818A2 (fr) 2012-07-25
EP2478818A3 EP2478818A3 (fr) 2017-10-25
EP2478818B1 true EP2478818B1 (fr) 2019-04-17

Family

ID=45463440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12150074.8A Active EP2478818B1 (fr) 2011-01-21 2012-01-03 Lave-vaisselle avec dispositif de nettoyage du filtre

Country Status (5)

Country Link
US (1) US10004377B2 (fr)
EP (1) EP2478818B1 (fr)
DE (1) DE102011002989A1 (fr)
PL (1) PL2478818T3 (fr)
TR (1) TR201906640T4 (fr)

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EP2517611A1 (fr) 2011-04-29 2012-10-31 Electrolux Home Products Corporation N.V. Filtre
USD776372S1 (en) 2014-06-05 2017-01-10 Wolf Appliance, Inc. Dishwasher tub bottom
US9655494B2 (en) 2014-06-05 2017-05-23 Wolf Appliance, Inc. Dishwasher filtration system
US20160367106A1 (en) * 2015-06-19 2016-12-22 General Electric Company Dishwasher appliance and a method for forming a unitary sump
CN106551667B (zh) * 2015-09-24 2019-10-25 Lg电子株式会社 洗碗机
US10335012B2 (en) 2015-10-19 2019-07-02 Electrolux Home Products, Inc. Dishwasher spray fill
USD840117S1 (en) 2016-09-23 2019-02-05 Wolf Appliance, Inc. Dishwasher water softener cap
USD842558S1 (en) 2016-09-23 2019-03-05 Wolf Appliance, Inc. Dishwasher filter cap
CN106419795A (zh) * 2016-12-06 2017-02-22 江苏理工学院 餐具清洁及残羹处理设备
DE102017207214A1 (de) 2017-04-28 2018-10-31 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät und Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts
DE102017122323A1 (de) * 2017-09-26 2019-03-28 Illinois Tool Works Inc. Flüssigkeitsverteiler für ein Flüssigkeitstransfersystem einer Transportspülmaschine sowie Transportspülmaschine mit einem solchen Flüssigkeitsverteiler
WO2020005950A1 (fr) * 2018-06-25 2020-01-02 Peter Hoefler Filtres rotatifs et systèmes associés
CN113873930A (zh) * 2019-06-03 2021-12-31 埃科莱布美国股份有限公司 洗碗机水槽和洗碗机设备
TR202016946A2 (tr) * 2020-10-23 2022-05-23 Arcelik As Süzgeç içeren bir bulaşık makinesi

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DE3114663C2 (de) 1981-04-10 1992-11-26 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Siebanordnung in der Ablaufwanne des Spülbehälters einer Geschirrspülmaschine
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IT218189Z2 (it) 1988-11-23 1992-04-08 Zanussi A Spa Industrie Macchina lavastoviglie con filtro di ridircolo autopulente.
EP1386575B1 (fr) * 2002-07-31 2005-10-05 CANDY S.p.A. Lave-vaisselle avec filtre broyeur mis en rotation par le flux du liquide de lavage
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KR100628127B1 (ko) * 2004-09-14 2006-09-26 엘지전자 주식회사 식기세척기
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EP2179685B1 (fr) * 2008-10-23 2013-01-09 Electrolux Home Products Corporation N.V. Lave-vaisselle

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Also Published As

Publication number Publication date
US20120186609A1 (en) 2012-07-26
DE102011002989A1 (de) 2012-07-26
EP2478818A2 (fr) 2012-07-25
US10004377B2 (en) 2018-06-26
EP2478818A3 (fr) 2017-10-25
TR201906640T4 (tr) 2019-05-21
PL2478818T3 (pl) 2019-10-31

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