EP2074921A2 - Siebfilter für eine Flüssigkeitsleitungsvorrichtung, insbesondere für eine Spülmaschine - Google Patents

Siebfilter für eine Flüssigkeitsleitungsvorrichtung, insbesondere für eine Spülmaschine Download PDF

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Publication number
EP2074921A2
EP2074921A2 EP09154971A EP09154971A EP2074921A2 EP 2074921 A2 EP2074921 A2 EP 2074921A2 EP 09154971 A EP09154971 A EP 09154971A EP 09154971 A EP09154971 A EP 09154971A EP 2074921 A2 EP2074921 A2 EP 2074921A2
Authority
EP
European Patent Office
Prior art keywords
screen filter
dishwashing machine
flow holes
machine according
underside
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
EP09154971A
Other languages
English (en)
French (fr)
Other versions
EP2074921B1 (de
EP2074921A3 (de
Inventor
Jochen Kunkel
Michael Heil
Yannick 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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27675152&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2074921(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP2074921A2 publication Critical patent/EP2074921A2/de
Publication of EP2074921A3 publication Critical patent/EP2074921A3/de
Application granted granted Critical
Publication of EP2074921B1 publication Critical patent/EP2074921B1/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 present invention relates to a household dishwashing machine having a screen filter with flow holes, separating the washing space from a drainage shaft and lying at the bottom of the washing space, sealing the perimeter.
  • Such a dishwashing machine is disclosed in US-A-5700329 .
  • Such document discloses a relatively 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 screen filter removes entrained solid particles from the liquid when draining the liquid from the washing 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. The result is that often small solid particles cannot sufficiently be retained and end up in the drainage shaft.
  • the task of the invention is to create a screen filter of the type mentioned at the outset that can be manufactured easily and cost efficiently and that is optimized in terms of flow restriction and the entire flow surface, provides an optimal sealing effect at the edges and that largely excludes the influence of material fatigue due to its design.
  • the edge lining of the screen filter around the drainage shaft is improved and sealed in that a link web that protrudes vertically on the underside is designed as a sealing lip.
  • the seal can be improved even more by providing the edge area with a double web that protrudes vertically on the underside that is designed as a double sealing lip or that is provided at the edge with an edging that protrudes out on the bottom side that is provided with receptacles for attaching an elastic sealing element.
  • the screen filter is equipped with flow holes that flare out in the flow direction, which are condensed to individual honeycombs in staggered row formation, that at the exterior of the edge it is provided with an orbiting, vertically aligned web that seals and is flat or linear shape, that it provides stiffening, injected reinforcement links in partitions on its underside, and 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 adopts a thickness of approx. 1 to 1.2 mm and that the diameter of the flow holes is approx. 1 mm and a distance of approx. 2 mm between adjacent rows. It is intended furthermore that adjacent rows of flow holes are each offset opposite to each other by half the distance between rows and the imaginary connection lines of the midpoint 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 honeycombs 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, as will be shown below.
  • 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 low material cost.
  • 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 as shown in Fig. 8 .
  • 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.
  • 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. 8 ).
  • Figure 2 shows such a surface 16 of the screen filter 10 in the view of its underside 13.
  • Reinforcement links 15 encompass the surface 16 and the adjacent surfaces 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 distance of approx. 2 mm in the rows.
  • thirteen rows are provided that begin and end with seven flow holes on the edges of the field 6 and increase to thirteen flow holes 17 in the middle, as shown in the sectional views of Fig. 3 and 4 .
  • 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.
  • the edge 14 of the screen filter 10 is designed, in a first embodiment of the invention, as a sealing lip which forms the transition from the screen filter 10 to the base 20 of the water conducting space, in order to seal the drainage shaft, as shown in Fig. 5 .
  • the edge is designed as a double sealing lip, as Fig. 6 illustrates.
  • edge 14 also provides receptacles 19 that allow for the attachment or injection of a separate, elastic sealing element 30, as shown in Fig. 7 .

Landscapes

  • Filtering Materials (AREA)
  • Washing And Drying Of Tableware (AREA)
EP09154971.7A 2002-02-28 2003-01-08 Siebfilter für eine flüssigkeitsleitungsvorrichtung, insbesondere für eine spülmaschine Expired - Lifetime EP2074921B1 (de)

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
EP03000076.4A EP1340448B2 (de) 2002-02-28 2003-01-08 Flachfilter für ein wasserführendes Gerät, insbesondere eine Geschirrspülmaschine

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP03000076.4A Division EP1340448B2 (de) 2002-02-28 2003-01-08 Flachfilter für ein wasserführendes Gerät, insbesondere eine Geschirrspülmaschine
EP03000076.4A Division-Into EP1340448B2 (de) 2002-02-28 2003-01-08 Flachfilter für ein wasserführendes Gerät, insbesondere eine Geschirrspülmaschine

Publications (3)

Publication Number Publication Date
EP2074921A2 true EP2074921A2 (de) 2009-07-01
EP2074921A3 EP2074921A3 (de) 2009-08-12
EP2074921B1 EP2074921B1 (de) 2016-08-31

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 After (1)

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

Country Status (3)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9451864B2 (en) 2011-04-29 2016-09-27 Electrolux Home Products Corporation N.V. Filter
US20220211245A1 (en) * 2019-04-30 2022-07-07 Qingdao Haier Dishwasher Co., Ltd. Filter structure of dishwasher, and dishwasher

Families Citing this family (9)

* 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
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530206A (en) 1975-09-18 1978-10-25 Euro Hausgeraete Gmbh Dishwashing machine
US5700329A (en) 1996-05-22 1997-12-23 White Consolidated Industries, Inc. Filter standpipe for dishwasher

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE2555153A1 (de) * 1975-12-08 1977-06-23 Licentia Gmbh Geschirrspuelmaschine
DE2832084A1 (de) * 1978-07-21 1980-01-31 Licentia Gmbh Geschirrspuelmaschine
US4201345A (en) * 1978-08-04 1980-05-06 General Electric Company Food cutter for dishwasher
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.
IT1245021B (it) * 1991-01-31 1994-09-13 Merloni Elettrodomestici Spa Perfezionamenti ad un filtro estraibile per lavastoviglie
DE29607001U1 (de) * 1996-04-17 1996-07-11 ADEK Bauteile GmbH, 40699 Erkrath Sieb für Spülmaschinen, insbesondere Geschirrspülmaschinen
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530206A (en) 1975-09-18 1978-10-25 Euro Hausgeraete Gmbh Dishwashing machine
US5700329A (en) 1996-05-22 1997-12-23 White Consolidated Industries, Inc. Filter standpipe for dishwasher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9451864B2 (en) 2011-04-29 2016-09-27 Electrolux Home Products Corporation N.V. Filter
US20220211245A1 (en) * 2019-04-30 2022-07-07 Qingdao Haier Dishwasher Co., Ltd. Filter structure of dishwasher, and dishwasher

Also Published As

Publication number Publication date
DE10208992A1 (de) 2003-09-18
EP2074921B1 (de) 2016-08-31
DE10208992B4 (de) 2007-06-28
EP1340448B2 (de) 2019-05-22
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
ES2596078T3 (es) 2017-01-04

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