EP1536726B1 - Filter device - Google Patents

Filter device Download PDF

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Publication number
EP1536726B1
EP1536726B1 EP03794903A EP03794903A EP1536726B1 EP 1536726 B1 EP1536726 B1 EP 1536726B1 EP 03794903 A EP03794903 A EP 03794903A EP 03794903 A EP03794903 A EP 03794903A EP 1536726 B1 EP1536726 B1 EP 1536726B1
Authority
EP
European Patent Office
Prior art keywords
water
adhesion
screen
reducing layer
sieve
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
EP03794903A
Other languages
German (de)
French (fr)
Other versions
EP1536726A1 (en
Inventor
Michael Rosenbauer
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 EP1536726A1 publication Critical patent/EP1536726A1/en
Application granted granted Critical
Publication of EP1536726B1 publication Critical patent/EP1536726B1/en
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
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning

Definitions

  • the invention relates to a screening device consisting of at least one screen body with a screen surface.
  • screens are often arranged in water-conducting household appliances, especially in dishwashers.
  • a screen body is provided with one or more screen surfaces, wherein the screen surface is preferably made of materials that are substantially resistant to corrosion dissolved in a cleaning fluid used ingredients. Therefore, the screen surfaces are made for example in conventional dishwashers either made of stainless steel or a high-quality plastic, in addition to the choice of material and the surface quality of the screen surface is crucial. In practice, it has been shown that with a coarse surface quality in grooves and surface roughness small dirt particles and / or bacteria can accumulate, so that both from a hygienic and optical point of view, a screen surface appears as impure.
  • a water-conducting domestic appliance according to the preamble of claim 1 is made US 3772902 known.
  • the object of the present invention is therefore to provide a water-conducting domestic appliance with a sieve device, which makes it possible that manual cleaning of the sieve surface must take place less frequently or that self-cleaning of the sieve surface takes place; as well as a water-conducting household appliance, in particular a dishwasher, provide, in which the taking place during the exchange pumping cleaning effect is further increased, so that, as already mentioned, a manual cleaning of the screen surface must take place less often or a self-cleaning of the screen surface takes place.
  • the water-conducting household appliance according to the invention has a sieve device, which has an adhesion-reducing layer at least on the side of the sieve surface facing the material to be filtered.
  • the advantage is achieved that both particles and substances to be filtered with components dissolved therein are difficult to adhere to the screen surfaces, so that dirt particles and / or bacteria and dissolved in the substances to be filtered components Do not stick to the screen surface and thus it is possible that a manual cleaning of the screen surface must take place less frequently or that a self-cleaning of the screen surface takes place.
  • an adhesion-reducing layer is provided on both sides of the screen surfaces, so that the adhesion of dirt particles and / or bacteria is substantially reduced even in the above-described replaceable pumps on both sides of the screen surface.
  • the adhesion-reducing layer essentially consists of a so-called diamond-light-carbon substance.
  • the screen surface is provided with an adhesion-reducing layer at least on the side facing a washing container of the dishwasher.
  • the advantage is achieved that both particles and to be filtered substances with dissolved components are difficult to adhere to the screen surfaces, so that in particular when using a Diamond Light Carbon coating dirt particles and water-conducting household appliances and dishwashers in the used cleaning liquid does not adhere dissolved components to the screen surface.
  • a particularly high self-cleaning effect is achieved when using the screening device according to the invention.
  • the adhesion-reducing layer can already be applied to the metal foils from which the screen surfaces are produced. However, it is also possible to make the coating with Diamond Light Carbon only after completion of the screen surfaces. In the case of subsequent coating, there is the advantage that the surface quality reduction resulting from the punching out of the screen openings can be substantially compensated since the Diamond Light Carbon coating can also be applied in the cross-sectional spaces of the screen surface openings. In contrast, coating the films before introducing the sieve holes can be far more economical.

Abstract

The sieve is designed for use in a dishwashing machine to filter out particles of dirt, bacteria etc. It may be cleared by periodic reversals of the current through it to prevent clogging of the pores. The side of the sieve facing the material to be filtered is faced with non-stick material e.g. Diamond-Light-Carbon to reduce adhesion of solid material to a minimum.

Description

Die Erfindung betrifft eine Siebvorrichtung bestehend aus wenigstens einem Siebkörper mit einer Siebfläche. Derartige Siebe werden häufig in wasserführenden Haushaltgeräten, insbesondere in Geschirrspülmaschinen, angeordnet.The invention relates to a screening device consisting of at least one screen body with a screen surface. Such screens are often arranged in water-conducting household appliances, especially in dishwashers.

Bei herkömmlichen Siebvorrichtungen, z.B. für Geschirrspülmaschinen, ist ein Siebkörper mit einer oder mehreren Siebflächen vorgesehen, wobei die Siebfläche vorzugsweise aus Werkstoffen hergestellt wird, die im wesentlichen korrosionsbeständig gegen in einer verwendeten Reinigungsflüssigkeit gelöste Bestandteile sind. Daher sind die Siebflächen z.B. bei herkömmlichen Geschirrspülmaschinen entweder aus Edelstahl oder einem hochwertigen Kunststoff hergestellt, wobei neben der Materialwahl auch die Oberflächenqualität der Siebfläche entscheidend ist. In der Praxis hat sich gezeigt, dass sich bei einer groben Oberflächengüte in Riefen und Oberflächenrauheiten kleine Schmutzpartikel und/oder Bakterien festsetzen können, so dass sowohl aus hygienischen als auch aus optischen Gesichtspunkten eine Siebfläche als unrein erscheint. Bei Geschirrspülmaschinen ist es bekannt (z.B. siehe DE-31 14 663 A1 ), zumindest für kurze Zeit die Fließrichtung durch die Siebfläche umzukehren - sogenanntes Wechselpumpen -, womit zwar erreicht werden kann, dass eine gewisse Selbstreinigung der Filtereinrichtungen stattfindet, jedoch bedarf es immer noch von Zeit zu Zeit einer manuellen Reinigung der Siebflächen.In conventional screening devices, eg for dishwashers, a screen body is provided with one or more screen surfaces, wherein the screen surface is preferably made of materials that are substantially resistant to corrosion dissolved in a cleaning fluid used ingredients. Therefore, the screen surfaces are made for example in conventional dishwashers either made of stainless steel or a high-quality plastic, in addition to the choice of material and the surface quality of the screen surface is crucial. In practice, it has been shown that with a coarse surface quality in grooves and surface roughness small dirt particles and / or bacteria can accumulate, so that both from a hygienic and optical point of view, a screen surface appears as impure. For dishwashers it is known (eg see DE-31 14 663 A1 ), at least for a short time to reverse the flow direction through the screen surface - so-called replaceable pumping - whereby it can be achieved that a certain self-cleaning of the filter devices takes place, but it still requires manual cleaning of the screen surfaces from time to time.

Ein wasser führendes Haushaltgerät gemäß dem oberbegriff des Anspruchs 1 ist aus US 3772902 bekannt.A water-conducting domestic appliance according to the preamble of claim 1 is made US 3772902 known.

Aufgabe der vorliegenden Erfindung ist es daher, ein wasserführendes Haushaltgerät mit einer Siebvorrichtung bereitzustellen, die es ermöglicht, dass eine manuelle Reinigung der Siebfläche seltener stattfinden muss bzw. dass eine Selbstreinigung der Siebfläche erfolgt; sowie ein wasserführendes Haushaltgerät, insbesondere eine Geschirrspülmaschine, bereitzustellen, bei der der beim Wechselpumpen stattfindende Reinigungseffekt noch erhöht wird, so dass, wie schon genannt, eine manuelle Reinigung der Siebfläche seltener stattfinden muss bzw. eine Selbstreinigung der Siebfläche erfolgt.The object of the present invention is therefore to provide a water-conducting domestic appliance with a sieve device, which makes it possible that manual cleaning of the sieve surface must take place less frequently or that self-cleaning of the sieve surface takes place; as well as a water-conducting household appliance, in particular a dishwasher, provide, in which the taking place during the exchange pumping cleaning effect is further increased, so that, as already mentioned, a manual cleaning of the screen surface must take place less often or a self-cleaning of the screen surface takes place.

Diese Aufgabe wird durch des erfindungsgemäße wasserführendes Haushaltgerät mit den Merkmalen gemäß Anspruch 1 gelöst. Diese Aufgabe wird für die Geschirrspülmaschine gemäß den Merkmalen der weiteren unabhängigen Ansprüchen gelöst. Vorteilhafte Weiterbildungen der vorliegenden Erfindung sind in den Unteransprüchen gekennzeichnet.This object is achieved by the water-conducting household appliance according to the invention with the features according to claim 1. This object is achieved for the dishwasher according to the features of the further independent claims. Advantageous developments of the present invention are characterized in the subclaims.

Das erfindungsgemäße wasserführendes Haushaltgerät weist eine Siebvorrichtung, auf, die wenigstens auf der dem zu filternden Stoff zugewandten Seite der Siebfläche eine haftmindernden Schicht auf weist.The water-conducting household appliance according to the invention has a sieve device, which has an adhesion-reducing layer at least on the side of the sieve surface facing the material to be filtered.

Mit dem erfindungsgemäßen wasserführendes Haushaltgerät mit dieses Siebvorrichtung wird der Vorteil erreicht, dass sowohl Partikel als auch zu filternde Stoffe mit darin gelösten Bestandteilen nur schwer an den Siebflächen anhaften können, so dass Schmutzpartikel und/oder Bakterien und auch in den zu filternden Stoffen gelöste Bestandteile an der Siebfläche nicht anhaften und es somit ermöglicht wird, dass eine manuelle Reinigung der Siebfläche seltener stattfinden muss bzw. dass eine Selbstreinigung der Siebfläche erfolgt.With the water-conducting household appliance according to the invention with this screening device, the advantage is achieved that both particles and substances to be filtered with components dissolved therein are difficult to adhere to the screen surfaces, so that dirt particles and / or bacteria and dissolved in the substances to be filtered components Do not stick to the screen surface and thus it is possible that a manual cleaning of the screen surface must take place less frequently or that a self-cleaning of the screen surface takes place.

Nach einer vorteilhaften Ausführungsform der Erfindung ist auf beiden Seiten der Siebflächen eine haftmindernde Schicht vorgesehen, so dass auch beim oben beschriebenen Wechselpumpen auf beiden Seiten der Siebfläche das Anhaften von Schmutzpartikeln und/oder Bakterien wesentlich reduziert wird.According to an advantageous embodiment of the invention, an adhesion-reducing layer is provided on both sides of the screen surfaces, so that the adhesion of dirt particles and / or bacteria is substantially reduced even in the above-described replaceable pumps on both sides of the screen surface.

In besonders vorteilhafter Weise besteht die haftmindernde Schicht wesentlich aus einer sogenannten Diamond-Light-Carbon-Substanz.In a particularly advantageous manner, the adhesion-reducing layer essentially consists of a so-called diamond-light-carbon substance.

Die oben genannten Vorteile der erfindungsgemäßen Siebvorrichtung werden natürlich bei der erfindungsgemäßen Anordnung wenigstens einer der vorbeschriebenen erfindungsgemäßen Siebvorrichtungen in einem wasserführenden Haushaltgerät ebenso in einer erfindungsgemäßen Geschirrspülmaschine genutzt.The abovementioned advantages of the sieve device according to the invention are of course also used in a dishwashing machine according to the invention in the arrangement according to the invention of at least one of the above-described sieve devices in a water-conducting domestic appliance.

Vorteilhafterweise ist bei der erfindungsgemäßen Anordnung einer der vorbeschriebenen erfindungsgemäßen Siebvorrichtungen in einer Geschirrspülmaschine die Siebfläche wenigstens auf der einem Spülbehälter der Geschirrspülmaschine zugewandten Seite mit einer haftmindernden Schicht versehen.Advantageously, in the inventive arrangement of one of the above-described screening devices according to the invention in a dishwasher, the screen surface is provided with an adhesion-reducing layer at least on the side facing a washing container of the dishwasher.

Mit der erfindungsgemäßen Siebvorrichtung wird der Vorteil erreicht, dass sowohl Partikel als auch zu filternde Stoffe mit darin gelösten Bestandteilen nur schwer an den Siebflächen anhaften können, so dass insbesondere bei Verwendung einer Diamond-Light-Carbon-Beschichtung Schmutzpartikel und bei wasserführenden Haushaltgeräten und Geschirrspülmaschinen in der verwendeten Reinigungsflüssigkeit gelöste Bestandteile an der Siebfläche nicht anhaften. Beim oben beschriebenen Wechselpumpen wird bei Verwendung der erfindungsgemäßen Siebvorrichtung ein besonders hoher Selbstreinigungseffekt erzielt.With the screening device according to the invention the advantage is achieved that both particles and to be filtered substances with dissolved components are difficult to adhere to the screen surfaces, so that in particular when using a Diamond Light Carbon coating dirt particles and water-conducting household appliances and dishwashers in the used cleaning liquid does not adhere dissolved components to the screen surface. When changing pumps described above, a particularly high self-cleaning effect is achieved when using the screening device according to the invention.

Die haftmindernde Schicht kann bereits auf die Metallfolien, aus denen die Siebflächen hergestellt werden, aufgetragen werden. Es ist jedoch auch möglich, erst nach Fertigstellung der Siebflächen die Beschichtung mit Diamond-Light-Carbon vorzunehmen. Bei der nachträglichen Beschichtung besteht der Vorteil, dass die durch das Ausstanzen der Siebdurchbrüche entstandene Oberflächengüteminderung wesentlich kompensiert werden können, da sich die Diamond-Light-Carbon-Beschichtung auch in die Querschnittsräume der Siebflächenöffnungen auftragen lässt. Demgegenüber kann das Beschichten der Folien vor Einbringen der Sieblöcher weitaus wirtschaftlicher sein.The adhesion-reducing layer can already be applied to the metal foils from which the screen surfaces are produced. However, it is also possible to make the coating with Diamond Light Carbon only after completion of the screen surfaces. In the case of subsequent coating, there is the advantage that the surface quality reduction resulting from the punching out of the screen openings can be substantially compensated since the Diamond Light Carbon coating can also be applied in the cross-sectional spaces of the screen surface openings. In contrast, coating the films before introducing the sieve holes can be far more economical.

Claims (5)

  1. Water-conducting domestic appliance comprising
    - a filter device
    - consisting of at least one filter body with a filter area,
    characterised in that
    - the filter surface is provided with an adhesion-reducing layer at least on the side facing the substance to be filtered.
  2. Water-conducting domestic appliance according to claim 1, characterised in that both sides of the filter area are provided with the adhesion-reducing layer.
  3. Water-conducting domestic appliance according to one of the preceding claims, characterised in that the adhesion-reducing layer consists substantially of diamond light carbon.
  4. Water-conducting domestic appliance according to any one of the preceding claims, characterised in that it is a dishwasher.
  5. Dishwasher according to claim 4, characterised in that the filter area is provided with an adhesion-reducing layer at least one the side facing a rinsing container of the dishwasher.
EP03794903A 2002-08-28 2003-08-20 Filter device Expired - Lifetime EP1536726B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10239495 2002-08-28
DE10239495A DE10239495A1 (en) 2002-08-28 2002-08-28 Sieve for dishwashing machine may be cleared by periodic reversals of current and side of sieve facing material to be filtered is faced with non-stick material
PCT/EP2003/009242 WO2004023969A1 (en) 2002-08-28 2003-08-20 Filter device

Publications (2)

Publication Number Publication Date
EP1536726A1 EP1536726A1 (en) 2005-06-08
EP1536726B1 true EP1536726B1 (en) 2011-08-03

Family

ID=31502052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03794903A Expired - Lifetime EP1536726B1 (en) 2002-08-28 2003-08-20 Filter device

Country Status (8)

Country Link
US (1) US7347212B2 (en)
EP (1) EP1536726B1 (en)
CN (1) CN100536754C (en)
AT (1) ATE518471T1 (en)
AU (1) AU2003258642A1 (en)
DE (1) DE10239495A1 (en)
ES (1) ES2367689T3 (en)
WO (1) WO2004023969A1 (en)

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US8746261B2 (en) * 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
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US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
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US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary 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
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a 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
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Also Published As

Publication number Publication date
US20050199273A1 (en) 2005-09-15
DE10239495A1 (en) 2004-03-11
US7347212B2 (en) 2008-03-25
CN100536754C (en) 2009-09-09
CN1678232A (en) 2005-10-05
ES2367689T3 (en) 2011-11-07
EP1536726A1 (en) 2005-06-08
AU2003258642A1 (en) 2004-04-30
ATE518471T1 (en) 2011-08-15
WO2004023969A1 (en) 2004-03-25

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