EP1340448B2 - Flachfilter für ein wasserführendes Gerät, insbesondere eine Geschirrspülmaschine - Google Patents

Flachfilter für ein wasserführendes Gerät, insbesondere eine Geschirrspülmaschine Download PDF

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Publication number
EP1340448B2
EP1340448B2 EP03000076.4A EP03000076A EP1340448B2 EP 1340448 B2 EP1340448 B2 EP 1340448B2 EP 03000076 A EP03000076 A EP 03000076A EP 1340448 B2 EP1340448 B2 EP 1340448B2
Authority
EP
European Patent Office
Prior art keywords
flow holes
screen filter
dishwashing machine
rows
machine according
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.)
Expired - Lifetime
Application number
EP03000076.4A
Other languages
English (en)
French (fr)
Other versions
EP1340448B1 (de
EP1340448A2 (de
EP1340448A3 (de
Inventor
Jochen Kunkel
Michael Heil
Yannich Fierling
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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
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Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP09154971.7A priority Critical patent/EP2074921B1/de
Publication of EP1340448A2 publication Critical patent/EP1340448A2/de
Publication of EP1340448A3 publication Critical patent/EP1340448A3/de
Application granted granted Critical
Publication of EP1340448B1 publication Critical patent/EP1340448B1/de
Publication of EP1340448B2 publication Critical patent/EP1340448B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L15/4204—Flat filters

Definitions

  • the invention concerns a screen filter for a liquid-conducting device, in particular a household dishwashing machine, that is designed flat with flow holes, separates the water-conducting space from a drainage shaft and lies at the bottom of the water-conducting space, sealing the perimeter.
  • Such a screen filter is disclosed in EP 0 988 825 A2 .
  • the screen filter removes entrained solid particles from the liquid when draining the liquid from the space by passing it through the holes. They are held back by the screen filter and do not end up in the drainage shaft. The solid particles can be taken out when removing the screen filter and disposed of when cleaning the screen filter.
  • Filter screens of this type are usually designed as flexible metal punch-hole components that on the one hand can not optimally be designed in terms of flow restriction, i.e. the entire flow surface, and on the other hand cannot effectively seal the edges due to production reasons. Oftentimes the result is that small solid particles cannot sufficiently be retained and end up in the drainage shaft.
  • US-A-5700329 describes a flat screen type filter for a dishwasher made of metallic material, provided with legs to link the filter with other portions of the dishwasher.
  • GB-A-1530206 discloses a flat screen filter for dishwashers made in a single piece of plastic molded material.
  • the task of the invention is to create a dishwashing machine with a screen filter of the type mentioned at the outset that can be manufactured easily and cost efficiently, that is optimized in terms of flow restriction and the entire flow surface, and that largely excludes the influence of material fatigue due to its design.
  • the flow holes can be selected very small such that even the smallest of solid particles are retained.
  • the number of flow holes can be selected very large to achieve a large overall flow area while simultaneously retaining very small solid particles.
  • reinforcement links on the bottom of the screen filter provide the screen filter with sufficient stability and stiffness even in thin screen filters. This also achieves long, device-specific lifetimes for screen filters manufactured in this way.
  • the intended design of the screen filter is that it provides a material thickness of approx. 1 to 1.2 mm and that the diameter of the flow holes is approx. 1 mm and a hole spacing of approx. 2 mm in row direction. It is intended furthermore that adjacent rows of flow holes are each offset opposite to each other by half the distance, and the imaginary connection lines of the midpoints of three directly adjacent flow holes form an isosceles triangle, thus the entire flow surface can be optimized to the maximum by the honeycombs, which are separated by reinforcement links.
  • the design of the reinforcement links provides for a thickness of between 0.5 to 0.8 mm and a height of approx. 2 mm.
  • optimal use of screen filter surface space is achieved in that the reinforcement links arranged on the bottom separate individual, normally constructed, hexagonal honeycomb fields, which are furnished with "2 N -1" rows of flow holes, wherein “N” is the number of holes at the edges of the honeycombs.
  • the design provides rows of holes at the honeycomb edge with “N” flow holes and rows of holes with “2 N -1” flow holes in the middle of the honeycombs field.
  • Draining the liquid from which solid particles have been removed can be improved in that the profile of the flow holes flares out towards the underside, preferably designed as truncated cones.
  • the design of the screen filter 10 shown in Fig. 1 is typical for a dishwashing machine.
  • the opening 11 embedded in the screen filter 10 normally surrounds a coarse filter that is set in the drainage shaft, wherein the edge 12, which sticks up on the underside 13 of the screen filter 10 accepts the fit after sealing.
  • the edge 14 that encompasses the circumference of the screen filter 10 also protrudes on the underside 13 and serves the same purpose.
  • the screen filter 10 which is designed and manufactured as a plastic-injection mould part is relatively thin with a material thickness of approx. 1 to 1.2 mm and can therefore be produced with little material expense.
  • reinforcement links 15 that stick up are injected on the underside 13 next to the edges 12 and 14 that have a thickness of between 0.5 mm and 0.8 mm and a height of approx. 2 mm and separate the fields 16.
  • These fields 16 are designed for optimal use of space as standard hexagons that border each other in a honeycomb shape and cover the vast majority of the surface space of the screen filter 10.
  • These fields 16 are provided with rows of flow holes 17, the arrangement of which will be shown as an example.
  • the holes are arranged like in Fig. 6 and 7 .
  • Flow passage is optimized in that the flow holes are arranged in the shape of an isosceles triangle.
  • the distance “d1” equals the length of the sides.
  • the distances “d1” and “d2” are contingent upon the minimal wall thicknesses "m” and "t” of the mould draft "a”.
  • the screen is designed with two distances "d1” and “d2"; "d1" defines the hole spacing within a honeycomb and "d2" the minimum hole spacing between the outer holes of two bordering honeycombs (see Fig. 6 ).
  • Figure 2 shows such a field 16 of the screen filter 10 in the view of its underside 13.
  • Reinforcement links 15 encompass the field 16 and the adjacent fields 16 link up without surface loss.
  • the flow holes 17 have a diameter of approx. 1 mm and are arranged in rows, wherein they provide a hole spacing of approx. 2 mm in the rows.
  • 13 rows are provided that begin and end with 7 flow holes on the edges of the field 6 and increase to 13 flow holes 17 in the middle, as shown in the sectional views of Fig. 3 and 4 .
  • the adjacent rows of flow holes 17 are always offset to each other by half the distance, the distance of the rows is kept small and the surface of the field 16 can be used optimally for a large flow surface, however, the surface of flow holes 17 is kept very small in order to retain small solid particles as well.
  • the flow holes 17 may continually increase in profile from the topside to the underside 13 of the screen filter 10 in order to improve the flow of liquid that has been freed of solid particles.
  • a truncated cone-like design of the flow holes 17 has proven to be particularly beneficial, as can be seen in the partial views in Fig. 3 through 5 .

Landscapes

  • Filtering Materials (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (8)

  1. Haushaltsgeschirrspülmaschine mit einem Filtersieb (10), das flach mit Strömungslöchern (17) ausgelegt ist, den wasserleitenden Raum von einem Entleerungsschacht trennt und am Boden des wasserleitenden Raums liegt, wodurch der Umfang abgedichtet wird, dadurch gekennzeichnet, dass das Filtersieb (10) als ein Plastikspritzgussteil ausgelegt und hergestellt ist, das an seiner Unterseite (13) zumindest in Bereichen durch eingespritzte Verstärkungsglieder (15) in Felder (16) aufgeteilt ist, die als reguläre Sechsecke ausgebildet sind, die wabenförmig aneinandergrenzen und den überwiegenden Teil der Oberfläche des Siebfilters (10) bedecken, wobei diese Felder (16) mit den in Reihen angeordneten Strömungslöchern (17) bereitgestellt sind.
  2. Haushaltsgeschirrspülmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass das Filtersieb (10) eine Dicke von ungefähr 1 bis 1,2 mm aufweist und dass die Strömungslöcher (17) einen Durchmesser von ungefähr 1 mm und einen Lochabstand von ungefähr 2 mm in den Reihen aufweisen.
  3. Haushaltsgeschirrspülmaschinen-Siebfilter gemäß Anspruch 2, dadurch gekennzeichnet, dass benachbarte Reihen der Strömungslöcher (17) jeweils um eine Hälfte des Lochabstands voneinander versetzt sind.
  4. Haushaltsgeschirrspülmaschine gemäß Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die imaginären Verbindungslinien der Mittelpunkte der drei direkt benachbarten Strömungslöcher (17) ein gleichschenkliges Dreieck ausbilden.
  5. Haushaltsgeschirrspülmaschine gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Verstärkungsglieder (15) eine Dicke zwischen 0,5 bis 0,8 mm bereitstellen und eine Höhe von ungefähr 2 mm bereitstellen.
  6. Haushaltsgeschirrspülmaschine gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Verstärkungsglieder (15) die Felder (16) mit Reihen von Strömungslöchern (17) trennen, wobei die sich an den Kanten des Feldes (16) befindlichen Reihen mit N Strömungslöchern und in der Mitte des Feldes (16) mit 2N-1 Strömungslöchern (17) bereitgestellt sind.
  7. Haushaltsgeschirrspülmaschine gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Profile der Strömungslöcher (17) in der Richtung der Unterseite (13) kontinuierlich größer werden, wobei sie bevorzugt kegelstumpfförmig ausgelegt sind.
  8. Haushaltsgeschirrspülmaschine gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Filtersieb mit definierten Lagerflächen versehen ist, die einen gewünschten Strömungskontakt mit Halterungen garantieren, und ebenso einen positiven Formschluss an der Kante bereitstellen, selbst nachdem eine Materialermüdung eingesetzt hat.
EP03000076.4A 2002-02-28 2003-01-08 Flachfilter für ein wasserführendes Gerät, insbesondere eine Geschirrspülmaschine Expired - Lifetime EP1340448B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09154971.7A EP2074921B1 (de) 2002-02-28 2003-01-08 Siebfilter für eine flüssigkeitsleitungsvorrichtung, insbesondere für eine spülmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002108992 DE10208992B4 (de) 2002-02-28 2002-02-28 Filtersieb für ein flüssigkeitsführendes Haushaltsgerät, insbesondere eine Geschirrspülmaschine
DE10208992 2002-02-28

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP09154971.7A Division EP2074921B1 (de) 2002-02-28 2003-01-08 Siebfilter für eine flüssigkeitsleitungsvorrichtung, insbesondere für eine spülmaschine
EP09154971.7A Division-Into EP2074921B1 (de) 2002-02-28 2003-01-08 Siebfilter für eine flüssigkeitsleitungsvorrichtung, insbesondere für eine spülmaschine
EP09154971.7 Division-Into 2009-03-12

Publications (4)

Publication Number Publication Date
EP1340448A2 EP1340448A2 (de) 2003-09-03
EP1340448A3 EP1340448A3 (de) 2003-09-24
EP1340448B1 EP1340448B1 (de) 2010-06-02
EP1340448B2 true EP1340448B2 (de) 2019-05-22

Family

ID=27675152

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09154971.7A Expired - Lifetime EP2074921B1 (de) 2002-02-28 2003-01-08 Siebfilter für eine flüssigkeitsleitungsvorrichtung, insbesondere für eine spülmaschine
EP03000076.4A Expired - Lifetime EP1340448B2 (de) 2002-02-28 2003-01-08 Flachfilter für ein wasserführendes Gerät, insbesondere eine Geschirrspülmaschine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09154971.7A Expired - Lifetime EP2074921B1 (de) 2002-02-28 2003-01-08 Siebfilter für eine flüssigkeitsleitungsvorrichtung, insbesondere für eine spülmaschine

Country Status (3)

Country Link
EP (2) EP2074921B1 (de)
DE (2) DE10208992B4 (de)
ES (2) ES2346518T3 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10359615A1 (de) 2003-12-18 2005-07-28 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit Filtersystem
EP1709898A1 (de) * 2005-04-05 2006-10-11 Electrolux Home Products Corporation N.V. Siebelement für eine Geschirrspülmaschine
DE102010038582B4 (de) 2010-07-28 2017-03-16 BSH Hausgeräte GmbH Geschirrspülmaschine
DE102010038584A1 (de) 2010-07-28 2012-02-02 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät, insbesondere Geschirrspülmaschine
DE102010038585A1 (de) 2010-07-28 2012-02-02 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät, insbesondere Geschirrspülmaschine, sowie Filterelement
DE102010041158B4 (de) * 2010-09-21 2023-07-06 BSH Hausgeräte GmbH Geschirrspülmaschine
EP2499954B1 (de) 2011-03-17 2017-05-10 Electrolux Home Products Corporation N.V. Geschirrspüler mit bistabilen Filter
EP2517611A1 (de) 2011-04-29 2012-10-31 Electrolux Home Products Corporation N.V. Filter
DE102012214318B4 (de) * 2012-08-10 2016-12-01 BSH Hausgeräte GmbH Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine
WO2015127982A1 (en) * 2014-02-28 2015-09-03 Arcelik Anonim Sirketi Fine filter with improved filtration performance for use in a dishwasher and dishwasher having the same
CN111839410B (zh) * 2019-04-30 2024-09-13 青岛海尔洗碗机有限公司 一种洗碗机过滤结构及洗碗机

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US3334750A (en) * 1963-05-31 1967-08-08 Mullins Mfg Corp Dishwasher strainer with alternate filtering positions
US3322285A (en) * 1965-01-05 1967-05-30 Whirlpool Co Filter for washing apparatus
US3591095A (en) * 1968-11-25 1971-07-06 Albert Di Stefano Combination garbage grinder and pump
IT1042662B (it) 1975-09-18 1980-01-30 Ire Ind Riunite Eurodome Stici Filtro per macchina lavastoviglie
DE2555153A1 (de) * 1975-12-08 1977-06-23 Licentia Gmbh Geschirrspuelmaschine
DE2832084A1 (de) * 1978-07-21 1980-01-31 Licentia Gmbh Geschirrspuelmaschine
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IT1099936B (it) * 1978-10-18 1985-09-28 Venturini Pio Macchina lavastoviglie per bar,ristoranti e comunita'
AU527001B2 (en) * 1978-12-29 1983-02-10 Hobart International Inc. Warewasher bypass soil collector
FR2508304B1 (fr) * 1981-06-30 1986-02-07 Esswein Sa Lave-vaisselle a filtre de recyclage automatiquement nettoye
DE3339281C1 (de) * 1983-10-28 1985-06-05 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Einrichtung in der Ablaufwanne einer Geschirrspülmaschine
IT211726Z2 (it) * 1987-04-08 1989-04-07 Zanussi Elettrodomestici Macchina lavastoviglie con filtro di ricircolo atupoulente.
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DE29607001U1 (de) * 1996-04-17 1996-07-11 ADEK Bauteile GmbH, 40699 Erkrath Sieb für Spülmaschinen, insbesondere Geschirrspülmaschinen
US5700329A (en) 1996-05-22 1997-12-23 White Consolidated Industries, Inc. Filter standpipe for dishwasher
FR2760624A1 (fr) * 1997-03-13 1998-09-18 Christophe Baudin Lave-vaisselle adapte a une utilisation en libre service
IT245315Y1 (it) * 1998-06-10 2002-03-20 Electrolux Zanussi Elettrodome Lavastoviglie con mezzi di filtraggio perfezionati
DE19841354C2 (de) 1998-09-10 2003-04-30 Aeg Hausgeraete Gmbh Filtersieb für ein flüssigkeitsführendes Haushaltsgerät

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Also Published As

Publication number Publication date
DE10208992A1 (de) 2003-09-18
EP2074921B1 (de) 2016-08-31
DE10208992B4 (de) 2007-06-28
DE60332786D1 (de) 2010-07-15
ES2346518T3 (es) 2010-10-18
EP2074921A3 (de) 2009-08-12
EP1340448B1 (de) 2010-06-02
EP1340448A2 (de) 2003-09-03
EP1340448A3 (de) 2003-09-24
EP2074921A2 (de) 2009-07-01
ES2596078T3 (es) 2017-01-04

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