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EP2869747B1 - Dishwasher, in particular domestic dishwasher, comprising at least one guide structure on the inner face of the door thereof for deflecting drying fluid flowing along therefrom - Google Patents

Dishwasher, in particular domestic dishwasher, comprising at least one guide structure on the inner face of the door thereof for deflecting drying fluid flowing along therefrom Download PDF

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Publication number
EP2869747B1
EP2869747B1 EP13736797.5A EP13736797A EP2869747B1 EP 2869747 B1 EP2869747 B1 EP 2869747B1 EP 13736797 A EP13736797 A EP 13736797A EP 2869747 B1 EP2869747 B1 EP 2869747B1
Authority
EP
European Patent Office
Prior art keywords
door
guide
guide elements
front door
dishwasher
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
EP13736797.5A
Other languages
German (de)
French (fr)
Other versions
EP2869747A2 (en
Inventor
Helmut Jerg
Hans-Peter Nannt
Michael Georg 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 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 PL13736797T priority Critical patent/PL2869747T3/en
Publication of EP2869747A2 publication Critical patent/EP2869747A2/en
Application granted granted Critical
Publication of EP2869747B1 publication Critical patent/EP2869747B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4251Details of the casing
    • A47L15/4257Details of the loading door
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • A47L15/481Drying arrangements by using water absorbent materials, e.g. Zeolith
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • A47L15/483Drying arrangements by using condensers
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • A47L15/486Blower arrangements
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • A47L15/488Connections of the tub with the ambient air, e.g. air intake or venting arrangements

Definitions

  • the invention relates to a dishwasher, in particular a household dishwasher, according to the preamble of claim 1.
  • This comprises a washing container in which one or more washing racks serving to hold items to be washed are present.
  • the dishwasher has a door, in particular a front door, by means of which the washing container can be closed.
  • a dishwasher with a drying system is used in which air as the drying fluid is exposed to a flow so that it flows around the wash ware, absorbing moisture and this at a different point, for example a liquid-absorbing material such as zeolite material, or a cooling surface is present, releases again.
  • the flow of the drying fluid can in particular be a convection flow or a forced flow caused, for example, by a fan.
  • a deflector device is provided on the bottom of the washing compartment, which causes an air flow from an air inlet provided below the door to enter a wash ware area from below in a uniformly distributed manner.
  • the dishwasher of the DE 102 57 650 A1 has an electrical heating element in a depression in the lower area of the inside of the door above the highest possible liquid level.
  • its lower crockery basket has an inclined bottom, to which at least one section of the washing container bottom runs at least approximately parallel, which is pulled down with an edge zone approximately to the underside of the machine.
  • the object of the invention is to provide a dishwasher, in particular a domestic dishwasher, with an improved drying performance.
  • a dishwasher of the type mentioned at the outset in that, when the door is in the closed position, at least one guide structure in the form of a plurality or multiplicity of individual guide elements is raised in this way from a substantially flat or planar surface of the door inside protrudes and it is arranged that, in the drying mode of the dishwasher, a drying fluid flowing along the inside of the door is directed to a wash basket accommodated in the interior of the wash container or to wash items arranged thereon.
  • the flat surface forms either the entire inside of the door or part of it.
  • the former is the case with a door that is not recessed in the shape of a trough on the inside, in which the inside of the door is formed by a flat sheet metal part or blank, or a plate, for example made of glass or plastic.
  • the latter applies to a door, the inside of which has a trough-shaped depression delimited by an edge bead.
  • the inside of the door is formed in particular by the wall of the so-called inner door of the door facing the interior of the washing compartment (viewed in its closed position).
  • the door is designed as a front door with which a front opening of the dishwasher can be closed for loading and / or unloading the interior of the washing compartment.
  • the drying fluid is preferably air, but this is not saturated with water vapor and can therefore absorb moisture.
  • the guide structure protruding from the flat surface of the inside of the door in the form of several protruding guide elements ensures that any free space or edge gap that may be present between the said flat surface and the front sides of one or more washing baskets arranged in the washing compartment is narrowed when the front door is closed.
  • the drying fluid flow which in a preferred dishwasher, preferably through a correspondingly designed circulating device, flows along the vertical extent of the inside of the door, in particular from bottom to top, strikes several guide elements of a guide structure with which it creates a horizontal directional component in the direction of the interior, in particular is imposed on specific inner areas of the washing compartment of the washing compartment, ie the result is a flow of the drying fluid, which deviates from its flow direction originally running in the height direction of the door in the front edge gap, backwards into the interior of the washing compartment, ie inwards, specifically on the there Wash ware stored in one or more wash baskets is directed.
  • a deflection of the drying fluid flow directed backwards away from the front door into the interior of the washing compartment also results, of course, in the case of guide elements that are positioned above or below the mentioned free space on the inside of the door.
  • the previously essentially unused portion of the drying fluid flow flowing along the front edge gap on the inside of the door is now used according to the invention to dry the dishes, thereby improving the drying result and the drying performance of the dishwasher.
  • the multiple guide elements of the guide structure are in particular already additional, ie extra to one or more, for the correct operation of the dishwasher constructively existing functional elements of the dishwasher such as their addition unit for detergent and / or rinse aid provided.
  • the guide elements forming a guide structure on the inside thereof are vertically spaced from one another.
  • a largely flat or planar partial surface of the inner door wall of the door facing the interior of the washing container and a guide element protruding from this flat partial surface with a component in the depth direction of the interior of the washing container alternate.
  • the guide elements which are offset from one another in the height direction of the door, allow portions or portions of the drying fluid flowing on the inside of the door along its height extension, in particular from bottom to top, at different heights from the inside of the door in the direction of the interior of the washing compartment to the there in one or more wash baskets stored items to be washed are diverted in a targeted manner. This improves the drying of the items to be washed in the drying cycle of a respective dishwashing program to be carried out.
  • the vertical distance between two adjacent guide elements is greater than the vertical extension of the respective guide element.
  • Such a dimensioning of the change between flat partial surfaces of the inner door wall of the door and additional guide elements protruding therefrom creates a particularly effective spoiler effect or diffuser effect, with which a drying fluid flow sweeping along the inside of the door is directed in a targeted manner to predetermined areas in the interior of the washing compartment, can be distracted in particular to the respective interior of the one or more washing racks.
  • guide elements are expediently provided on the inside of the door.
  • the guide elements run essentially parallel to one another.
  • a conductive structure can be formed into a metallic inner door wall by stamping, deep drawing or by some other mechanical forming process.
  • the guide elements can also be attached to the inner door wall with a parallel alignment to one another with the help of another connection technique such as gluing. In the case of an inner door wall made of plastic, such a parallel alignment of the guide elements also favors their attachment or shaping.
  • the respective guide element is advantageously designed in the form of a guide rib that extends in the width direction of the door, in particular a linear guide rib. Since the respective guide rib protruding in the depth direction lies transversely, in particular perpendicular, to the flow direction of the drying fluid flow, a deflector or spoiler is in a simple manner for deflecting the drying fluid flowing along the inside of the door, in particular rising in the vertical direction, in the direction of the interior of the washing compartment, in particular on the wash items stored there in one or more wash baskets.
  • the respective guide element When the door is in the closed position, the respective guide element preferably has a vertical extension of 1 mm to 20 mm, in particular 3 mm to 12 mm.
  • the one or more guide structures, in particular guide elements, when viewed in the closed position of the door each have a depth of 1 mm to 10 mm, preferably from 3 mm to 7 mm, with which they, when viewed in the closed position of the door, from the plane Surface the inside of which protrudes into the interior of the washing compartment.
  • the inside of the door has a trough-shaped depression which is bordered by an edge bead.
  • the depth of the one or more guide structures is preferably 2% to 20%, in particular 5% to 15%, of the depth of the edge bead of the door and / or of a protruding from the flat surface of the inside of the door serving to accommodate a functional component Recording ledge.
  • the one or more guide structures, in particular guide elements extend over 50% to 90% of the width of the door.
  • the one or more guide structures, in particular guide elements are arranged only in the lower two thirds of the inside of the door. This already ensures that a drying fluid flowing along the inside of the door can be deflected into the interior of the washing container in good time before it reaches the ceiling wall of the washing container.
  • the drying fluid can be directed onto the bottom surface of an upper washing basket accommodated in the interior of the washing container, such as an upper crockery basket or a cutlery drawer, so that the drying fluid can flow through and flow through this upper washing basket from below.
  • the one or more guide structures, in particular guide elements are only arranged on a surface area of the inside of the door which is below the height level defined by the underside of an upper or uppermost wash rack. This results in a simple improvement in the drying result for items to be washed in the upper or uppermost wash basket.
  • the one or more guide structures, in particular guide elements are designed in one piece with an embossed molded part that forms the inside of the door. This simplifies the production technology.
  • the dishwasher can have a circulation drying system which serves to dry the drying fluid and which in particular comprises an absorption, preferably zeolite, drying element.
  • a circulation device for forced circulation of the drying fluid can be particularly advantageous.
  • an outflow element is provided in the washing compartment, which is designed so that the drying fluid flowing into the washing compartment is at least partially directed towards the inside of the door with a substantially horizontal directional component. It can be particularly advantageous if the outflow element is arranged in the bottom of the washing compartment.
  • the dishwasher 1 shown comprises a washing container 2, the front loading opening of which can be closed with a front door 3 which is hinged to a lower region of the dishwasher 1.
  • the Rinsing containers 2 are one or more - two in the example shown - serving to accommodate items 30 washing baskets 4a, 4b mounted horizontally displaceably.
  • an addition device 6 for active detergents such as detergents and / or rinse aid, for example on the upper edge of the door 3 or - as in Fig. 6 shown - in a relative to its longitudinal extent (which runs in the vertical direction when the door is closed) is arranged in the middle door area.
  • a plurality of guide elements 9 spaced apart in the vertical direction 10 protrude from a flat surface 8 of the door inside 5. These extend horizontally or in the width direction 14 of the door 3 or the dishwasher 1. Viewed overall, they form a guide structure 9 *. If a vertical direction is spoken of here, this information relates to the operating state in which the door 3 is closed. The same applies to the depth direction mentioned below. For the sake of simplicity, these directions are retained in the drawings even when the door is open - horizontally aligned.
  • the guide elements 9 can be separate components which are attached to the inside of the door 3, for example glued on. This can be useful if the inside of the door as a whole forms a flat surface 8 and is formed, for example, by a glass plate or plastic plate. If the door has on the inside, for example, a metallic embossed molded part 32, which is often also referred to as an inner door, the guide elements 9 are preferably formed in one piece with the embossed molded part 32. They are produced, for example, by embossing from the side of the embossed molded part 32 facing the door front, for example when the inner door is formed in a deep-drawing process.
  • the guide elements 9 are each preferably designed in the form of ribs.
  • they each have a straight longitudinal course in the width direction of the door. They therefore extend transversely, in particular perpendicularly, to the vertical flow direction of the drying fluid 11 rising along the inside of the door and, due to their raised protrusion from the inside of the door, they each form a spoiler or a deflecting element that deflects the flow of drying fluid in a horizontal direction Imprints the interior of the washing compartment.
  • they can optionally have different cross-sectional shapes or contours 15, provided that these are suitable for deflecting the drying fluid in the manner described above.
  • Guide elements 9 with a circular contour 15a and a triangular contour 15b are shown by way of example.
  • a door can be provided with guide elements 9 of the same or different contours. It is thus conceivable to choose a different contour depending on the height level at which a guide element 9 is arranged on the door 3.
  • guide elements 9 influencing the flow path are their depth 17, with which they protrude in the depth direction 16 from the door inside 5 or the flat surface 8 transversely, in particular perpendicularly to the latter.
  • Guide elements 9 are preferably provided, the depth 17 of which is from 1 mm to 10 mm.
  • the deflecting or guiding effect of the guiding elements is too small below 1 mm, so that a noticeable improvement in the drying effect can hardly be achieved.
  • the guide element increasingly acts like a barrier, so that the guide elements 9 arranged downstream are no longer exposed to the flow of drying fluid 11, or no longer sufficiently.
  • the aim is an approximately even division of the drying fluid 11 flowing along the inside of the door 5 into several partial flows directed towards the wash ware 30 or a wash basket 4a, 4b carrying the wash ware (arrows 36 in Fig. 2 ).
  • Guide elements 9, which ensure this requirement with sufficient flow deflection, have a depth in the range of 3 mm to 7 mm.
  • the guide elements 9 do not necessarily have to have one and the same depth 17. Rather, guide elements 9 of different depths 17 can be present. It is conceivable, for example, that the depth 17 changes as a function of the respective height or vertical position of the guide elements 9.
  • the guide elements With regard to a trough-shaped recess in the inside of the door 5 or a receiving projection 20 which extends, for example, in the width direction 14 and serves to receive a functional component, such as a feed device 6 ( Fig. 6 ) the guide elements have a comparatively small depth 17. This only makes about 2% to 20%, preferably 5% to 15% the depth 19 of the edge bead 18 or a receiving projection 20 protruding from the flat surface 8 and serving to receive a functional component, for example a feed device 6.
  • the guide elements 9 have a width in the vertical direction 10 or vertical extension 23 that is adapted to their depth 17. The larger this is, the less steep - for a given depth - the flank 241 of the guide elements 9 against which the drying fluid 11 flows.
  • the above-mentioned depth extensions 17 Realize the guide elements 9 with sufficient deflection for the dry fluid flow.
  • Another parameter that has an effect on the dry fluid flow is the density with which the guide elements 9 are arranged on the flat surface 8.
  • the vertical distance 21 is therefore selected so that it is greater than the vertical extension 23 of the guide elements 9, namely 1 cm to 10 cm, preferably 2 cm to 5 cm.
  • 1% to 20%, preferably 2% to 10% of the flat surface 8 is covered with guide elements 9.
  • a number of 2 to 8, in particular 3 to 6, guide elements are expediently selected, which are provided on the inside of the door.
  • the guide elements 9 run in the width direction 14 of the door 3, whereby they preferably extend over a range of 50% to 90% of the door width 24 in order to ensure a sufficient deflecting effect.
  • a single guide element 9 can extend over the mentioned width range or rows 25 of several guide elements 9 'are provided.
  • a transverse spacing 42 may be provided between two rows 25 provided next to one another in the width direction 14 can be spaced apart from one another in the height direction or vertical direction 10 arranged guide elements 9 ', each extending in the width direction 14, a transverse spacing 42 may be provided.
  • guide structures 9 * specifically adapted to the respective flow and construction conditions can be provided in a simple manner.
  • the intensity of the dry fluid flow decreases noticeably because of the deflection by the guide elements. It can therefore be expedient to arrange the guide elements 9 only on a surface area of the inside 5 of the door which, when the door 3 is closed, is below the height level 22 defined by the underside of the uppermost washing rack 4b. In the case of two or three washing baskets 4 arranged one above the other, it is therefore expedient to arrange guide elements 9 only in the lower two thirds of the inside 5 of the door.
  • the drying fluid 11 flows through an outflow element 26 arranged on the bottom 31 of the washing container 2 into the washing container 2 and is subjected to a forced flow which is achieved, for example, by a circulating device 27, such as a fan, which is expediently positioned in the base installation space 28 of the dishwasher 1 .
  • the outflow element 26 is designed in such a way that the drying fluid flow leaving it is directed towards the inside 5 of the door 3 in such a way that at least a partial flow of the drying fluid 11 hits the door inside 5 in the area of the lowermost wash basket 4a.
  • the outflow element 26 is preferably arranged at the rear end 29 of the bottom 31 of the washing compartment, which is remote from the door 3. This ensures that the majority of the drying fluid 11 flows up through the underside of the lowermost wash basket 4a (arrows 39) and dries items 30 in the wash basket 4a and in the wash basket 4b located above it.
  • a liquid-absorbing element, in particular a zeolite drying element 40, which removes water from the drying fluid 11, is arranged downstream of the circulating device 27.
  • the drying element 40, the circulation device 27, the outflow element 26, the outlet 33 and their connecting lines are components of an air circulation system 41.
  • part of the drying fluid 11 flows towards a lower area of the door inside 5 and is deflected vertically upwards, the drying fluid 11 initially flowing through a free space 35 existing between the lower washing basket 4a and the door inside 5.
  • the guide elements 9 present there on the inside of the door 5 or the flat surface 8 direct the drying fluid flowing through the free space 35 onto the items to be washed 30, which are arranged closest to the door (see arrows 36).
  • the uppermost guide element 9a is positioned in the area of the maximum loading height 37 of the wash basket 4a, deflecting drying fluid 11 over the wash items 30 towards the underside of the upper wash basket 4b (see arrow 38). In the free space 35 'between the upper washing rack 4b and the inside 5 of the door 3, there are preferably no guide elements 9, since this can only improve the drying result slightly.
  • one or more guide elements protruding from the tub base for air deflection or air diversion are expediently provided in the flat or smooth tub base of the inner door, which is enclosed by an edge bead all around.
  • the guide elements are preferably pressed in or molded in from the outside inwards, ie in the direction of the side facing the treatment room, in particular embossed (by embossing processes), or molded in by hydraulic forming. They are also provided on the otherwise flat surface of the inner door and protrude from it.
  • the raised guide elements can each be designed as a linear or narrow strip-shaped rib or web that runs in the width direction of the inner door.
  • a plurality of guide elements, in particular between 3 and 6, are preferably arranged one above the other at a predeterminable vertical distance. This multitude of guide elements forms a guide structure in stack form.
  • a guide structure can optionally also be designed as a logo, symbol, font, etc.
  • the one or the plurality of protruding structures are used for targeted air guidance and air deflection to a desired area in the interior of the washing compartment.
  • the additional, one or more protruding or protruding guide elements or Profile elements are provided on the otherwise smooth, ie flat inner door surface. This ensures better ventilation of the items to be washed in the wash baskets, e.g. in the upper crockery basket and / or in a cutlery drawer above.
  • the guide elements are provided in addition to the construction components that are usually present, such as an installation protrusion in the area of an upper edge zone of the door for adding detergent / rinse aid.
  • the air can preferably be guided / directed to a special zone of the respective wash basket, in particular a crockery basket, which is provided for items to be washed, in particular items to be washed, which place particular demands on the drying performance.
  • a special zone of the respective wash basket in particular a crockery basket, which is provided for items to be washed, in particular items to be washed, which place particular demands on the drying performance.
  • This can be, for example, an area of the washing basket that is specially intended for plastic or plastic dishes, which is more difficult to dry than ceramic or porcelain due to its lack of mass.
  • the guide elements or, in generalized terms, the guide structures protrude preferably between 1 mm and 10 mm, in particular between 3 and 7 mm, from the flat or planar inner surface of the inner door facing the interior of the washing compartment. (More does not make sense, as the air flow path between the inner door wall and the front of the crockery baskets must not be too narrow to avoid the air circulation in the interior of the washing container being torn off.)
  • the protrusion of the one or more guide structures over the flat inner surface of the inner door is flat in relation to any existing installation protrusion for adding detergent / rinse aid.
  • the respective guide structure is also much flatter than a bead that often surrounds the door pan of the door in many door constructions. When the door is completely closed in the vertical position, the respective guide structure preferably has an extension between 2% and 20% of the depth of the edge bead protruding in the depth direction relative to its door pan.
  • the one or more guide structures are preferably provided on the lower 2/3 of the door inner wall.
  • the upper third of the door remains free of guide structures (when the door is positioned vertically, viewed in height direction).
  • An air flow that rises from below from the area of the washing container close to the floor can then be sufficiently divided up in good time before it reaches the top wall of the washing container, in particular before reaching the upper basket, and diverted into the interior of the washing container with a flow component in the depth direction. In particular, this ensures improved ventilation of the upper basket from below.
  • the one or more conductive structures are preferably distributed over 1% to 20%, in particular between 2% and 10% of the inner wall surface of the door.
  • guide elements running transversely on the inner door side ie extending in the width direction of the inner door
  • these are preferably arranged essentially parallel and at a vertical distance from one another (based on the vertical closed position of the door).
  • the height or vertical distance of any two adjacent guide elements is in particular greater than the height extension of the respective guide element (height based on the vertical closed end position of the door).
  • the height distance from one guide rib to the next guide rib is preferably between 1 cm and 10 cm, in particular between 2 cm and 5 cm elected.
  • the height extension of the respective guide element is preferably selected between 1 mm and 20 mm, in particular between 3 mm and 12 mm
  • the width extension of the respective guide element is selected between 50% and 90% of the total width of the door.
  • guide elements are expedient in order to be able to effect a sufficient deflection and redistribution of the air flow from the inside of the door into the interior of the washing compartment. It can be particularly useful if the guide elements are distributed along the height of the lower basket (from its lower edge to its upper edge) in the flat surface of the inner door in order to force the front, upward air flow into the gap between the lower basket and the upper basket can.

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

Description

Die Erfindung betrifft eine Geschirrspülmaschine, insbesondere eine Haushaltsgeschirrspülmaschine, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a dishwasher, in particular a household dishwasher, according to the preamble of claim 1.

Diese umfasst einen Spülbehälter, in dem ein oder mehrere zur Aufnahme von Spülgut dienende Spülkörbe vorhanden sind. Zum Be- und Entladen des Spülguts weist die Geschirrspülmaschine eine Tür, insbesondere Fronttür auf, mit deren Hilfe der Spülbehälter verschlossen werden kann. Zur besseren Trocknung von nach einem Reinigungsvorgang mit Spülflüssigkeit behandeltem, feuchtem Spülgut wird eine Geschirrspülmaschine mit einem Trocknungssystem eingesetzt, bei dem Luft als Trocknungsfluid einer Strömung ausgesetzt wird, damit es das Spülgut umströmt, dabei Feuchtigkeit aufnimmt und diese an einer anderen Stelle, an der beispielsweise ein flüssigkeitabsorbierendes Material wie z.B. Zeolith-Material, oder eine Kühlfläche vorhanden ist, wieder abgibt. Die Strömung des Trocknungsfluids kann insbesondere eine Konvektionsströmung oder eine, z.B. durch ein Gebläse, hervorgerufene Zwangsströmung sein. Dabei kann es bei manchen Konstruktionen von Geschirrspülmaschinen mit einer Fronttür vorkommen, dass zwischen der dem Innenraum des Spülbehälters zugewandten Innenwandung, d.h. Innenseite der Fronttür und der Front eines im Innenraum des Spülbehälters untergebrachten Spülkorbs ein Freiraum oder Randspalt vorhanden ist, durch den ein Teil des zirkulierenden Trocknungsfluids entlang der Innenseite der Tür, insbesondere in Höhenrichtung des Innenraums des Spülbehälters strömt, so dass das dort entlang fließende Trocknungsfluid mit dem Spülgut, das in einem oder mehreren Spülkörben im Innenraum des Spülbehälters gelagert ist, allenfalls nur teilweise, d.h. eingeschränkt oder kaum in Kontakt kommt und somit keine oder zumindest weniger Feuchtigkeit aufnehmen kann, als dies bei einem Trocknungsfluidstrom der Fall ist, welcher die Oberfläche des Spülguts direkt beaufschlagt, etwa indem er die Unter- oder Oberseite eines Spülkorbs, vorzugsweise mittig, anströmt.This comprises a washing container in which one or more washing racks serving to hold items to be washed are present. For loading and unloading the items to be washed, the dishwasher has a door, in particular a front door, by means of which the washing container can be closed. For better drying of moist wash ware that has been treated with washing liquid after a cleaning process, a dishwasher with a drying system is used in which air as the drying fluid is exposed to a flow so that it flows around the wash ware, absorbing moisture and this at a different point, for example a liquid-absorbing material such as zeolite material, or a cooling surface is present, releases again. The flow of the drying fluid can in particular be a convection flow or a forced flow caused, for example, by a fan. It can happen in some designs of dishwashers with a front door that a free space or edge gap is present between the inner wall facing the interior of the washing container, ie the inside of the front door and the front of a washing basket housed in the interior of the washing container, through which a part of the circulating Drying fluid flows along the inside of the door, in particular in the vertical direction of the interior of the washing compartment, so that the drying fluid flowing along there is only partially, ie limited or hardly in contact with the items to be washed, which are stored in one or more washing racks in the interior of the washing compartment comes and thus can absorb no or at least less moisture than is the case with a drying fluid flow which acts directly on the surface of the items to be washed, for example by flowing against the bottom or top of a wash basket, preferably in the middle.

Bei der Geschirrspülmaschine der DE 10 2005 023 428 A1 ist am Boden des Spülbehälters eine Deflektoreinrichtung vorgesehen, die bewirkt, dass ein Luftstrom aus einem unterhalb der Tür vorgesehenen Lufteinlass gleichmäßig verteilt von unten in einen Spülgutbereich eintritt.In the dishwasher of the DE 10 2005 023 428 A1 a deflector device is provided on the bottom of the washing compartment, which causes an air flow from an air inlet provided below the door to enter a wash ware area from below in a uniformly distributed manner.

Die Geschirrspülmaschine der DE 102 57 650 A1 weist ein elektrisches Heizelement in einer Muldenausprägung im unteren Bereich der Innenseite der Tür oberhalb eines höchsten möglichen Flüssigkeitsstands auf.The dishwasher of the DE 102 57 650 A1 has an electrical heating element in a depression in the lower area of the inside of the door above the highest possible liquid level.

Bei der Geschirrspülmaschine der DE 26 10 379 A1 hat deren unterer Geschirrkorb einen geneigt verlaufenden Boden, zu dem mindestens ein Abschnitt des Spülbehälterbodens wenigstens annähernd parallel verläuft, der mit einer Randzone etwa bis an die Maschinenunterseite heruntergezogen ist.In the dishwasher of the DE 26 10 379 A1 its lower crockery basket has an inclined bottom, to which at least one section of the washing container bottom runs at least approximately parallel, which is pulled down with an edge zone approximately to the underside of the machine.

Aufgabe der Erfindung ist es, eine Geschirrspülmaschine, insbesondere eine Haushaltsgeschirrspülmaschine, mit einer verbesserten Trocknungsleistung bereitzustellen.The object of the invention is to provide a dishwasher, in particular a domestic dishwasher, with an improved drying performance.

Diese Aufgabe wird bei einer Geschirrspülmaschine der eingangs erwähnten Art gemäß Anspruch 1 dadurch gelöst, dass in der Schließstellung der Tür betrachtet aus einer im Wesentlichen ebenen bzw. planen Fläche deren Türinnenseite wenigstens eine Leitstruktur in Form einer Mehrzahl bzw. Vielzahl von einzelnen Leitelementen, derart erhaben vorsteht und angeordnet ist, dass im Trocknungsbetrieb der Geschirrspülmaschine ein an der Innenseite der Tür entlang strömendes Trocknungsfluid zu einem im Innenraum des Spülbehälters untergebrachten Spülkorb bzw. auf darauf angeordnetes Spülgut geleitet wird. Die ebene Fläche bildet entweder die gesamte Türinnenseite oder einen Teil davon. Ersteres ist bei einer Tür der Fall, die innenseitig nicht wannenförmig vertieft ist, bei der die Türinnenseite von einem ebenen Blechteil- oder -zuschnitt, oder einer Platte beispielsweise aus Glas oder Kunsstoff gebildet ist. Letzteres trifft bei einer Tür zu, deren Innenseite eine von einer Randwulst umgrenzte wannenförmige Vertiefung aufweist.This object is achieved in a dishwasher of the type mentioned at the outset in that, when the door is in the closed position, at least one guide structure in the form of a plurality or multiplicity of individual guide elements is raised in this way from a substantially flat or planar surface of the door inside protrudes and it is arranged that, in the drying mode of the dishwasher, a drying fluid flowing along the inside of the door is directed to a wash basket accommodated in the interior of the wash container or to wash items arranged thereon. The flat surface forms either the entire inside of the door or part of it. The former is the case with a door that is not recessed in the shape of a trough on the inside, in which the inside of the door is formed by a flat sheet metal part or blank, or a plate, for example made of glass or plastic. The latter applies to a door, the inside of which has a trough-shaped depression delimited by an edge bead.

Die Innenseite der Tür ist insbesondere durch die dem Innenraum des Spülbehälters zugewandte Wandung der sogenannten Innentür der Tür gebildet (in deren Schließstellung betrachtet). Die Tür ist als Fronttür ausgebildet, mit der eine frontseitige Öffnung der Geschirrspülmaschine zum Beladen und/oder Entladen des Innenraums des Spülbehälters geschlossen werden kann.The inside of the door is formed in particular by the wall of the so-called inner door of the door facing the interior of the washing compartment (viewed in its closed position). The door is designed as a front door with which a front opening of the dishwasher can be closed for loading and / or unloading the interior of the washing compartment.

Das Trocknungsfluid ist vorzugsweise Luft, wobei diese jedoch nicht mit Wasserdampf gesättigt ist und somit Feuchtigkeit aufnehmen kann.The drying fluid is preferably air, but this is not saturated with water vapor and can therefore absorb moisture.

Durch die aus der ebenen Fläche der Türinnenseite vorstehende Leitstrukturin Form der mehreren vorstehenden Leitelemente wird erreicht, dass ein bei geschlossener, frontseitiger Tür zwischen deren genannten ebene Fläche und den Frontseiten von ein oder mehreren im Spülbehälter angeordneten Spülkörben etwaig vorhandener Freiraum bzw. Randspalt verengt wird. Der Trocknungsfluidstrom, der bei einer bevorzugten Geschirrspülmaschine, vorzugsweise durch eine entsprechend gestaltete Umwälzvorrichtung, entlang der Höhenerstreckung der Türinnenseite, insbesondere von unten nach oben, strömt, trifft auf auf mehrere Leitelemente einer Leitstruktur auf, mit der ihm eine horizontale Richtungskomponente in Richtung Innenraum, insbesondere auf spezifische Innenbereiche des Spülraums des Spülbehälters, aufgezwungen wird, d.h. es resultiert eine Strömung des Trocknungsfluids, die abweichend von dessen ursprünglich in Höhenrichtung der Tür im frontseitigen Randspalt verlaufenden Strömungsrichtung nach hinten weg in den Innenraum des Spülbehälters, d.h. nach innen, gezielt auf das dort in ein oder mehreren Spülkörben gelagerte Spülgut gerichtet ist. Eine von der frontseitigen Tür nach hinten weg in den Innenraum des Spülbehälters gerichtete Ablenkung des Trocknungsfluidstroms ergibt sich natürlich auch bei Leitelementen, die ober- oder unterhalb des genannten Freiraums an der Türinnenseite positioniert sind. Der bisher im Wesentlichen ungenutzt gebliebene, an der im frontseitigen Randspalt an der Türinnenseite entlang strömende Anteil der Trocknungsfluidströmung wird jetzt erfindungsgemäß zur Trocknung des Geschirrs ausgenutzt, wodurch das Trocknungsergebnis bzw. die Trockenleistung der Geschirrspülmaschine verbessert wird.The guide structure protruding from the flat surface of the inside of the door in the form of several protruding guide elements ensures that any free space or edge gap that may be present between the said flat surface and the front sides of one or more washing baskets arranged in the washing compartment is narrowed when the front door is closed. The drying fluid flow, which in a preferred dishwasher, preferably through a correspondingly designed circulating device, flows along the vertical extent of the inside of the door, in particular from bottom to top, strikes several guide elements of a guide structure with which it creates a horizontal directional component in the direction of the interior, in particular is imposed on specific inner areas of the washing compartment of the washing compartment, ie the result is a flow of the drying fluid, which deviates from its flow direction originally running in the height direction of the door in the front edge gap, backwards into the interior of the washing compartment, ie inwards, specifically on the there Wash ware stored in one or more wash baskets is directed. A deflection of the drying fluid flow directed backwards away from the front door into the interior of the washing compartment also results, of course, in the case of guide elements that are positioned above or below the mentioned free space on the inside of the door. The previously essentially unused portion of the drying fluid flow flowing along the front edge gap on the inside of the door is now used according to the invention to dry the dishes, thereby improving the drying result and the drying performance of the dishwasher.

Die mehreren Leitelemente der Leitstruktur sind insbesondere zusätzlich, d.h. extra zu ein oder mehreren, für den ordnungsgemäßen Betrieb der Geschirrspülmaschine bereits konstruktiv vorhandenen Funktionselementen der Geschirrspülmaschine wie z.B. deren Zugabeeinheit für Reiniger und/oder Klarspüler vorgesehen.The multiple guide elements of the guide structure are in particular already additional, ie extra to one or more, for the correct operation of the dishwasher constructively existing functional elements of the dishwasher such as their addition unit for detergent and / or rinse aid provided.

Gemäß der Erfindung sind (in der Schließstellung der Tür betrachtet) die auf deren Innenseite eine Leitstruktur bildenden Leitelemente voneinander vertikal beabstandet. Es wechselt sich dabei jeweils eine weitgehend ebene bzw. plane Teilfläche der dem Innenraum des Spülbehälters zugewandten Innentürwandung der Tür und ein gegenüber dieser ebenen Teilfläche mit einer Komponente in Tiefenrichtung des Innenraums des Spülbehälters abstehendes Leitelement ab. Insgesamt betrachtet ergibt sich somit eine Leitstruktur, die ein mehrfaches, insbesondere schrittweises Umlenken eines Trocknungsfluidstroms in Richtung auf den mit ein oder mehreren Spülkörben bestückten Innenraum des Spülbehälters sicherstellt, während dieser in Höhenrichtung der Tür, insbesondere von unten nach oben, an deren Innenseite entlangströmt. Durch die in Höhenrichtung der Tür versetzt zueinander angeordneten Leitelemente können Anteile bzw. Portionen des an der Innenseite der Tür entlang deren Höhenerstreckung, insbesondere von unten nach oben, strömenden Trocknungsfluids in verschiedenen Höhenlagen von der Innenseite der Tür in Richtung Innenraum des Spülbehälters auf das dort in ein oder mehreren Spülkörben gelagerte Spülgut gezielt umgelenkt werden. Dies verbessert die Trocknung des Spülguts im Trocknungsgang eines jeweilig durchzuführenden Geschirrspülprogramms.According to the invention (viewed in the closed position of the door) the guide elements forming a guide structure on the inside thereof are vertically spaced from one another. A largely flat or planar partial surface of the inner door wall of the door facing the interior of the washing container and a guide element protruding from this flat partial surface with a component in the depth direction of the interior of the washing container alternate. Overall, this results in a guide structure that ensures a multiple, in particular step-by-step, deflection of a drying fluid flow in the direction of the interior of the washing compartment equipped with one or more washing racks, while it flows along the inside of the door in the vertical direction, in particular from bottom to top. The guide elements, which are offset from one another in the height direction of the door, allow portions or portions of the drying fluid flowing on the inside of the door along its height extension, in particular from bottom to top, at different heights from the inside of the door in the direction of the interior of the washing compartment to the there in one or more wash baskets stored items to be washed are diverted in a targeted manner. This improves the drying of the items to be washed in the drying cycle of a respective dishwashing program to be carried out.

Insbesondere ist es zweckmäßig, wenn (in Schließstellung der Tür betrachtet) der Vertikalabstand zwischen je zwei benachbarten Leitelementen größer als die Vertikalerstreckung des jeweiligen Leitelements ist. Durch eine derartige Dimensionierung des Wechsels zwischen ebenen Teilflächen der Innentürwandung der Tür und zusätzlich daraus abstehenden Leitelementen ist ein besonders wirkungsvoller Spoilereffekt oder Diffusoreffekt gebildet, mit der sich eine an der Innenseite der Tür entlang streichende Trocknungsfluidströmung in gezielter Weise auf vorgegebene Bereiche im Innenraum des Spülbehälters, insbesondere auf das jeweilige Innere der ein oder mehreren Spülkörbe ablenken lässt.In particular, it is useful if (viewed in the closed position of the door) the vertical distance between two adjacent guide elements is greater than the vertical extension of the respective guide element. Such a dimensioning of the change between flat partial surfaces of the inner door wall of the door and additional guide elements protruding therefrom creates a particularly effective spoiler effect or diffuser effect, with which a drying fluid flow sweeping along the inside of the door is directed in a targeted manner to predetermined areas in the interior of the washing compartment, can be distracted in particular to the respective interior of the one or more washing racks.

Als besonders günstig für ein einwandfreies Trocknungsergebnis hat sich gezeigt, wenn zwischen je zwei benachbarten Leitelementen ein Vertikalabstand von 1cm bis 10 cm, insbesondere von 2 cm bis 5 cm, gewählt ist. Je näher die Leitelemente beisammen stehen, je geringer also ihr Abstand in Vertikalrichtung, d.h. ihr Vertikalabstand ist, desto geringer wird ihre ablenkende Wirkung, da jeweils stromabwärts angeordnete Leitelemente quasi im "Windschatten" des stromauf benachbarten Leitelements stehen. Tests haben gezeigt, dass ein Mindest- Vertikalabstand von mindestens 1 cm zwischen je zwei benachbarten Leitelementen zweckmäßig ist, um durch das jeweilige Leitelement für das entlang der Türinnenseite strömende Trocknungsfluid eine gewünschte Ablenkung in den Innenraum des Spülbehälters hinein bewirken zu können.It has been shown to be particularly favorable for a perfect drying result if a vertical distance of 1 cm to 10 cm, in particular of 2 cm to 5 cm, is chosen between each two adjacent guide elements. The closer the guiding elements together stand, so the smaller their distance in the vertical direction, ie their vertical distance, the less their distracting effect, since downstream guide elements are in the "slipstream" of the upstream adjacent guide element. Tests have shown that a minimum vertical distance of at least 1 cm between each two adjacent guide elements is useful in order to be able to effect a desired deflection into the interior of the washing compartment for the drying fluid flowing along the inside of the door through the respective guide element.

Zweckmäßigerweise sind zur Bildung einer effektiven Leitstruktur zwischen 2 und 8, insbesondere zwischen 3 und 6, Leitelemente auf der Innenseite der Tür vorgesehen.To form an effective guide structure, between 2 and 8, in particular between 3 and 6, guide elements are expediently provided on the inside of the door.

Zweckmäßig kann es insbesondere sein, wenn die Leitelemente im Wesentlichen parallel zueinander verlaufen. Dadurch entsteht eine regelmäßige Leitstruktur, die sich bei der Massenfertigung von Geschirrspülmaschinen in einfacher Weise implementieren lässt. Insbesondere kann eine derartige Leitstruktur durch Prägen, Tiefziehen oder durch einen sonstigen, mechanischen Umformprozess in eine metallische Innentürwandung eingeformt werden. Die Leitelemente können auch mit Hilfe einer sonstigen Verbindungstechnik wie z.B. Kleben auf die Innentürwandung mit einer parallelen Ausrichtung zueinander aufgebracht werden. Im Fall einer Innentürwandung aus Kunststoff begünstigt eine solche parallele Ausrichtung der Leitelemente ebenfalls deren Anbringung oder Ausformung.It can be particularly expedient if the guide elements run essentially parallel to one another. This creates a regular lead structure that can be easily implemented in the mass production of dishwashers. In particular, such a conductive structure can be formed into a metallic inner door wall by stamping, deep drawing or by some other mechanical forming process. The guide elements can also be attached to the inner door wall with a parallel alignment to one another with the help of another connection technique such as gluing. In the case of an inner door wall made of plastic, such a parallel alignment of the guide elements also favors their attachment or shaping.

Nach einer zweckmäßigen Weiterbildung der Erfindung ist das jeweilige Leitelement in vorteilhafter Weise in Form einer sich in Breitenrichtung der Tür erstreckenden, insbesondere linienförmigen, Leitrippe ausgebildet. Da die jeweilige, in Tiefenrichtung abstehende Leitrippe quer, insbesondere senkrecht, zur Strömungsrichtung der Trocknungsfluidströmung liegt, ist in einfacher Weise ein Abweiser oder Spoiler zum Umlenken des entlang der Türinnenseite strömenden, insbesondere in Höhenrichtung aufsteigenden, Trocknungsfluids in Richtung auf den Innenraum des Spülbehälters, insbesondere auf das dort in ein oder mehreren Spülkörben gelagerte Spülgut, bereitgestellt.According to an expedient development of the invention, the respective guide element is advantageously designed in the form of a guide rib that extends in the width direction of the door, in particular a linear guide rib. Since the respective guide rib protruding in the depth direction lies transversely, in particular perpendicular, to the flow direction of the drying fluid flow, a deflector or spoiler is in a simple manner for deflecting the drying fluid flowing along the inside of the door, in particular rising in the vertical direction, in the direction of the interior of the washing compartment, in particular on the wash items stored there in one or more wash baskets.

Vorzugsweise weist das jeweilige Leitelement in der Schließstellung der Tür betrachtet eine Vertikalerstreckung von 1 mm bis 20 mm, insbesondere von 3 mm bis 12 mm, auf. Insbesondere weisen die ein oder mehreren Leitstrukturen, insbesondere Leitelemente, in der Schließstellung der Tür betrachtet jeweils eine Tiefenerstreckung von 1 mm bis 10 mm, bevorzugt von 3 mm bis 7 mm, auf, mit der sie in der Schließstellung der Tür betrachtet jeweils aus der ebenen Fläche deren Innenseite in den Innenraum des Spülbehälters abstehen.When the door is in the closed position, the respective guide element preferably has a vertical extension of 1 mm to 20 mm, in particular 3 mm to 12 mm. In particular, the one or more guide structures, in particular guide elements, when viewed in the closed position of the door, each have a depth of 1 mm to 10 mm, preferably from 3 mm to 7 mm, with which they, when viewed in the closed position of the door, from the plane Surface the inside of which protrudes into the interior of the washing compartment.

Nach einer vorteilhaften Ausführungsvariante weist die Türinnenseite eine wannenförmige Vertiefung auf, die von einer Randwulst umgrenzt ist.According to an advantageous embodiment variant, the inside of the door has a trough-shaped depression which is bordered by an edge bead.

Verallgemeinert ausgedrückt beträgt die Tiefenerstreckung der ein oder mehreren Leitstrukturen vorzugsweise jeweils 2% bis 20%, insbesondere 5% bis 15%, der Tiefenerstreckung der Randwulst der Tür und/oder eines aus der ebenen Fläche der Innenseite der Tür vorstehenden, zur Aufnahme eines Funktionsbauteils dienenden Aufnahmevorsprungs.In generalized terms, the depth of the one or more guide structures is preferably 2% to 20%, in particular 5% to 15%, of the depth of the edge bead of the door and / or of a protruding from the flat surface of the inside of the door serving to accommodate a functional component Recording ledge.

Zweckmäßig für die erfindungsgemäße Ablenkung oder Umlenkung des Trocknungsfluidstroms kann es sein, wenn 1% bis 20%, insbesondere 2% bis 10%, der ebenen Fläche der Innenseite der Tür von der wenigstens einen Leitstruktur, insbesondere von den Leitelementen, bedeckt sind.It can be useful for the deflection or redirection of the drying fluid flow according to the invention if 1% to 20%, in particular 2% to 10%, of the flat surface of the inside of the door is covered by the at least one guide structure, in particular the guide elements.

Vorteilhaft für eine ausreichende Umlenkwirkung kann es sein, wenn sich die ein oder mehreren Leitstrukturen, insbesondere Leitelemente, über 50% bis 90% der Breite der Tür erstrecken.It can be advantageous for a sufficient deflecting effect if the one or more guide structures, in particular guide elements, extend over 50% to 90% of the width of the door.

Insbesondere kann es ausreichend sein, wenn die ein oder mehreren Leitstrukturen, insbesondere Leitelemente, nur in den unteren zwei Dritteln der Innenseite der Tür angeordnet sind. Dadurch lässt sich bereits sicherstellen, dass ein entlang der Türinnenseite entlang strömendes Trocknungsfluid noch rechtzeitig vor Erreichen der Deckenwandung des Spülbehälters in den Innenraum des Spülbehälters abgelenkt werden kann. Insbesondere ist es so möglich, dass das Trocknungsfluid auf die Bodenfläche eines im Innenraum des Spülbehälters untergebrachten oberen Spülkorbs, wie z.B. eines oberen Geschirrkorbs oder einer Besteckschublade, gelenkt werden kann, so dass dieser obere Spülkorb von unten her mit dem Trocknungsfluid beströmt und durchströmt werden kann.In particular, it can be sufficient if the one or more guide structures, in particular guide elements, are arranged only in the lower two thirds of the inside of the door. This already ensures that a drying fluid flowing along the inside of the door can be deflected into the interior of the washing container in good time before it reaches the ceiling wall of the washing container. In particular, it is possible in this way that the drying fluid can be directed onto the bottom surface of an upper washing basket accommodated in the interior of the washing container, such as an upper crockery basket or a cutlery drawer, so that the drying fluid can flow through and flow through this upper washing basket from below.

Besonders günstig kann es sein, wenn die ein oder mehreren Leitstrukturen, insbesondere Leitelemente, nur an einem Flächenbereich der Innenseite der Tür angeordnet sind, welcher sich unterhalb des von der Unterseite eines oberen oder obersten Spülkorbs definierten Höhenniveaus befindet. Dadurch ergibt sich in einfacher Weise eine Verbesserung des Trocknungsergebnisses für Spülgut im oberen oder obersten Spülkorb.It can be particularly advantageous if the one or more guide structures, in particular guide elements, are only arranged on a surface area of the inside of the door which is below the height level defined by the underside of an upper or uppermost wash rack. This results in a simple improvement in the drying result for items to be washed in the upper or uppermost wash basket.

Zweckmäßig kann es ggf. sein, wenn die ein oder mehreren Leitstrukturen, insbesondere Leitelemente, einstückig mit einem die Türinnenseite bildenden Präge-Formteil ausgebildet sind. Dies vereinfacht die Produktionstechnik.It can possibly be expedient if the one or more guide structures, in particular guide elements, are designed in one piece with an embossed molded part that forms the inside of the door. This simplifies the production technology.

Nach einer vorteilhaften Ausführungsvariante der Erfindung kann die Geschirrspülmaschine ein zur Trocknung des Trocknungsfluids dienendes Zirkulationstrocknungssystem aufweisen, welches insbesondere ein Absorptions-, bevorzugt Zeolith-Trocknungselement umfasst.According to an advantageous embodiment variant of the invention, the dishwasher can have a circulation drying system which serves to dry the drying fluid and which in particular comprises an absorption, preferably zeolite, drying element.

Günstig kann ferner insbesondere eine Umwälzeinrichtung zur Zwangsumwälzung des Trocknungsfluids sein.Furthermore, a circulation device for forced circulation of the drying fluid can be particularly advantageous.

Ggf. kann es vorteilhaft sein, wenn ein im Spülbehälter vorhandenes Ausströmelement vorgesehen ist, welches so gestaltet ist, dass das in den Spülbehälter strömende Trocknungsfluid wenigstens teilweise mit einer im Wesentlichen horizontal verlaufenden Richtungskomponte gegen die Innenseite der Tür gelenkt wird. Dabei kann es insbesondere günstig sein, wenn das Ausströmelement im Boden des Spülbehälters angeordnet ist.It may be advantageous if an outflow element is provided in the washing compartment, which is designed so that the drying fluid flowing into the washing compartment is at least partially directed towards the inside of the door with a substantially horizontal directional component. It can be particularly advantageous if the outflow element is arranged in the bottom of the washing compartment.

Die vorstehend erläuterten und/oder die sonstigen, in den Unteransprüchen wiedergegebenen vorteilhaften Aus- und Weiterbildungen der Erfindung können dabei - außer z.B. in den Fällen eindeutiger Abhängigkeiten oder unvereinbarer Alternativen - einzeln oder aber auch in beliebiger Kombination miteinander zur Anwendung kommen. Die Erfindung und ihre vorteilhaften Aus- und Weiterbildungen sowie deren Vorteile werden nachfolgend anhand von Zeichnungen näher erläutert.The above-explained and / or the other advantageous developments and developments of the invention reproduced in the subclaims can be used individually or in any combination with one another, except, for example, in cases of clear dependencies or incompatible alternatives. The invention and its advantageous designs and developments as well as their advantages are explained in more detail below with reference to drawings.

Es zeigen, jeweils in einer schematischen Prinzipskizze:

Fig. 1
eine perspektivische Darstellung einer Haushaltsgeschirrspülmaschine, deren Tür insgesamt eben ausgestaltet ist,
Fig. 2
einen Längsschnitt durch eine Geschirrspülmaschine entsprechend Linie II-II in Fig. 1,
Fig. 3 A, B
einen Schnitt durch ein Paar in Vertikalrichtung beabstandeter Leitelemente mit jeweils unterschiedlicher Kontur, entsprechend Linie III-III in Fig. 5,
Fig. 4
eine perspektivische Darstellung einer Tür, deren Innenseite eine wannenförmige, von Randwülsten umgrenzte Vertiefung aufweist,
Fig. 5
eine Tür entsprechend Fig. 4, jedoch mit anders gestalteten Leitelementen,
Fig. 6
eine Tür entsprechend Fig. 4, welche einen sich zwischen zwei seitlichen Randwülsten erstreckenden Aufnahmevorsprung aufweist, wobei Leitelemente an einer von dem Aufnahmevorsprung und den Randwülsten umgrenzten ebenen Fläche der Vertiefung vorhanden sind.
It shows, each in a schematic sketch:
Fig. 1
a perspective view of a household dishwasher, the door of which is designed as a whole flat,
Fig. 2
a longitudinal section through a dishwasher according to line II-II in Fig. 1 ,
Fig. 3 A, B
a section through a pair of vertically spaced guide elements each with a different contour, corresponding to line III-III in Fig. 5 ,
Fig. 4
a perspective view of a door, the inside of which has a trough-shaped recess bordered by edge beads,
Fig. 5
a door accordingly Fig. 4 , but with differently designed guide elements,
Fig. 6
a door accordingly Fig. 4 , which has a receiving projection extending between two lateral edge beads, guide elements being present on a flat surface of the recess that is delimited by the receiving projection and the edge beads.

Elemente mit gleicher Funktion und Wirkungsweise sind in den Figuren mit denselben Bezugszeichen versehen. In den Figuren sind nur diejenigen Bestandteile einer Geschirrspülmaschine mit Bezugszeichen versehen und erläutert, welche für das Verständnis der Erfindung erforderlich sind. Es versteht sich von selbst, dass die Geschirrspülmaschine weitere Teile und Baugruppen umfassen kann.Elements with the same function and mode of operation are provided with the same reference symbols in the figures. In the figures, only those components of a dishwasher are provided with reference symbols and explained which are necessary for an understanding of the invention. It goes without saying that the dishwasher can comprise further parts and assemblies.

Eine in Fig. 1 und 2 gezeigte Geschirrspülmaschine 1 umfasst einen Spülbehälter 2, dessen vorderseitige Beladeöffnung mit einer frontseitigen Tür 3, die an einem unteren Bereich der Geschirrspülmaschine 1 schwenkbar angelenkt ist, verschließbar ist. Im Spülbehälter 2 sind ein oder mehrere - in dem gezeigten Beispiel zwei - zur Aufnahme von Spülgut 30 dienende Spülkörbe 4a, 4b horizontal verschiebbar gelagert. Am oberen Rand der Türinnenseite 5 ist eine Zugabeeinrichtung 6 für Spülwirkstoffe wie z.B. Reinigungsmittel und/oder Klarspülmittel vorhanden, die beispielsweise am oberen Rand der Tür 3 oder - wie in Fig. 6 gezeigt - in einem bezogen auf deren Längserstreckung (,die bei geschlossener Tür in Höhenrichtung verläuft,) mittleren Türbereich angeordnet ist. Aus einer ebenen Fläche 8 der Türinnenseite 5 steht eine Vielzahl von in Vertikalrichtung 10 beabstandeten Leitelementen 9 vor. Diese erstrecken sich horizontal bzw. in Breitenrichtung 14 der Tür 3 bzw. der Geschirrspülmaschine 1. Sie bilden insgesamt betrachtet eine Leitstruktur 9*. Wenn hier von einer Vertikalrichtung gesprochen ist, so bezieht sich diese Angabe auf den Betriebszustand, bei dem die Tür 3 geschlossen ist. Gleiches trifft für die weiter unten erwähnte Tiefenrichtung zu. Aus Gründen der Vereinfachung werden diese Richtungsangaben in den Zeichnungen auch bei geöffneter - horizontal ausgerichteter Tür - beibehalten.One in Fig. 1 and 2 The dishwasher 1 shown comprises a washing container 2, the front loading opening of which can be closed with a front door 3 which is hinged to a lower region of the dishwasher 1. in the Rinsing containers 2 are one or more - two in the example shown - serving to accommodate items 30 washing baskets 4a, 4b mounted horizontally displaceably. At the upper edge of the inside 5 of the door there is an addition device 6 for active detergents such as detergents and / or rinse aid, for example on the upper edge of the door 3 or - as in Fig. 6 shown - in a relative to its longitudinal extent (which runs in the vertical direction when the door is closed) is arranged in the middle door area. A plurality of guide elements 9 spaced apart in the vertical direction 10 protrude from a flat surface 8 of the door inside 5. These extend horizontally or in the width direction 14 of the door 3 or the dishwasher 1. Viewed overall, they form a guide structure 9 *. If a vertical direction is spoken of here, this information relates to the operating state in which the door 3 is closed. The same applies to the depth direction mentioned below. For the sake of simplicity, these directions are retained in the drawings even when the door is open - horizontally aligned.

Die Leitelemente 9 können separate Bauteile sein, die an der Innenseite der Tür 3 angebracht, beispielsweise angeklebt sind. Dies kann etwa dann zweckmäßig sein, wenn die Türinnenseite insgesamt eine ebene Fläche 8 bildet und beispielsweise von einer Glasplatte oder Kunststoffplatte gebildet ist. Wenn die Tür innenseitig ein z.B. metallisches Präge-Formteil 32 trägt, das vielfach auch als Innentür bezeichnet wird, sind die Leitelemente 9 vorzugsweise einstückig mit dem Präge-Formteil 32 ausgebildet. Sie werden beispielsweise durch eine von der zur Türvorderseite weisenden Seite des Präge-Formteils 32 her erfolgende Prägung, beispielsweise bei der Formung der Innentür in einem Tiefziehverfahren, erzeugt. Die Leitelemente 9 sind jeweils vorzugsweise rippenförmig ausgebildet. Hier im Ausführungsbeispiel weisen sie jeweils einen geradlinienförmigen Längsverlauf in Breitenrichtung der Tür auf. Sie erstrecken sich also quer, insbesondere senkrecht, zur vertikalen Strömungsrichtung des entlang der Türinnenseite aufsteigenden Trocknungsfluids 11 und bilden für dieses durch ihr erhabenes Abstehen von der Türinnenseite jeweils einen Spoiler oder ein Ablenkelement, der oder das der Trocknungsfluidströmung eine horizontale Richtungskomponente zu ihrer Umlenkung in Richtung Innenraum des Spülbehälters aufprägt.The guide elements 9 can be separate components which are attached to the inside of the door 3, for example glued on. This can be useful if the inside of the door as a whole forms a flat surface 8 and is formed, for example, by a glass plate or plastic plate. If the door has on the inside, for example, a metallic embossed molded part 32, which is often also referred to as an inner door, the guide elements 9 are preferably formed in one piece with the embossed molded part 32. They are produced, for example, by embossing from the side of the embossed molded part 32 facing the door front, for example when the inner door is formed in a deep-drawing process. The guide elements 9 are each preferably designed in the form of ribs. Here in the exemplary embodiment, they each have a straight longitudinal course in the width direction of the door. They therefore extend transversely, in particular perpendicularly, to the vertical flow direction of the drying fluid 11 rising along the inside of the door and, due to their raised protrusion from the inside of the door, they each form a spoiler or a deflecting element that deflects the flow of drying fluid in a horizontal direction Imprints the interior of the washing compartment.

Sie können zur Optimierung des Strömungsverlaufs des Trocknungsfluids ggf. unterschiedliche Querschnittsformen bzw. -konturen 15 aufweisen, sofern diese geeignet sind, das Trocknungsfluid in der oben beschriebenen Weise abzulenken.In order to optimize the flow course of the drying fluid, they can optionally have different cross-sectional shapes or contours 15, provided that these are suitable for deflecting the drying fluid in the manner described above.

In den Figuren 3A und 3B sind exemplarisch Leitelemente 9 mit einer kreisförmigen Kontur 15a und einer dreieckigen Kontur 15b gezeigt. Eine Tür kann mit Leitelementen 9 gleicher oder unterschiedlicher Kontur versehen sein. So ist es denkbar, je nach dem Höhenniveau, an dem ein Leitelement 9 an der Tür 3 angeordnet ist, eine andere Kontur zu wählen.In the Figures 3A and 3B Guide elements 9 with a circular contour 15a and a triangular contour 15b are shown by way of example. A door can be provided with guide elements 9 of the same or different contours. It is thus conceivable to choose a different contour depending on the height level at which a guide element 9 is arranged on the door 3.

Ein weiteres den Strömungsverlauf beeinflussendes Gestaltungsmerkmal der Leitelemente 9 ist deren Tiefenerstreckung 17, mit der sie in Tiefenrichtung 16 aus der Türinnenseite 5 bzw. der ebenen Fläche 8 quer, insbesondere senkrecht, zu dieser vorstehen. Vorzugsweise sind Leitelemente 9 vorgesehen, deren Tiefenerstreckung 17 von 1 mm bis 10 mm beträgt. Unter 1 mm ist die Ablenk- bzw. Leitwirkung der Leitelemente zu gering, so dass kaum noch eine merkliche Verbesserung der Trocknungswirkung erzielbar ist. Oberhalb von 10 mm wirkt das Leitelement zunehmend wie eine Sperre, so dass stromab angeordnete Leitelemente 9 nicht oder nicht mehr ausreichend mit Trocknungsfluid 11 angeströmt werden. Ziel ist jedoch eine etwa gleichmäßige Aufteilung des an der Türinnenseite 5 entlang strömenden Trocknungsfluids 11 in mehrere auf das Spülgut 30 bzw. auf einen das Spülgut tragenden Spülkorb 4a, 4b gerichtete Teilströme (Pfeile 36 in Fig. 2). Leitelemente 9, die diese Anforderung bei ausreichender Strömungsablenkung gewährleisten, weisen eine Tiefenerstreckung im Bereich von 3 mm bis 7 mm auf. Die Leitelemente 9 müssen nicht zwangsläufig ein und dieselbe Tiefenerstreckung 17 haben. Es können vielmehr Leitelemente 9 unterschiedlicher Tiefenerstreckung 17 vorhanden sein. Denkbar ist beispielsweise, dass sich die Tiefenerstreckung 17 in Abhängigkeit von der jeweiligen Höhen- bzw. Vertikalposition der Leitelemente 9 ändert.Another design feature of the guide elements 9 influencing the flow path is their depth 17, with which they protrude in the depth direction 16 from the door inside 5 or the flat surface 8 transversely, in particular perpendicularly to the latter. Guide elements 9 are preferably provided, the depth 17 of which is from 1 mm to 10 mm. The deflecting or guiding effect of the guiding elements is too small below 1 mm, so that a noticeable improvement in the drying effect can hardly be achieved. Above 10 mm, the guide element increasingly acts like a barrier, so that the guide elements 9 arranged downstream are no longer exposed to the flow of drying fluid 11, or no longer sufficiently. The aim, however, is an approximately even division of the drying fluid 11 flowing along the inside of the door 5 into several partial flows directed towards the wash ware 30 or a wash basket 4a, 4b carrying the wash ware (arrows 36 in Fig. 2 ). Guide elements 9, which ensure this requirement with sufficient flow deflection, have a depth in the range of 3 mm to 7 mm. The guide elements 9 do not necessarily have to have one and the same depth 17. Rather, guide elements 9 of different depths 17 can be present. It is conceivable, for example, that the depth 17 changes as a function of the respective height or vertical position of the guide elements 9.

In Bezug auf einen eine wannenförmige Vertiefung in der Türinnenseite 5 umgrenzenden Randwulst 18 oder einen sich beispielsweise in Breitenrichtung 14 erstreckenden, zur Aufnahme eines Funktions-Bauteils, etwa einer Zugabeeinrichtung 6 dienenden Aufnahmevorsprungs 20 (Fig. 6) weisen die Leitelemente eine vergleichsweise geringe Tiefenerstreckung 17 auf. Diese macht nur etwa 2% bis 20%, vorzugsweise 5% bis 15% der Tiefenerstreckung 19 des Randwulstes 18 oder eines aus der ebenen Fläche 8 vorstehenden, zur Aufnahme eines Funktionsbauteils, beispielsweise einer Zugabeeinrichtung 6 dienenden Aufnahmevorsprungs 20 aus.With regard to a trough-shaped recess in the inside of the door 5 or a receiving projection 20 which extends, for example, in the width direction 14 and serves to receive a functional component, such as a feed device 6 ( Fig. 6 ) the guide elements have a comparatively small depth 17. This only makes about 2% to 20%, preferably 5% to 15% the depth 19 of the edge bead 18 or a receiving projection 20 protruding from the flat surface 8 and serving to receive a functional component, for example a feed device 6.

Damit eine ausreichende Ablenkung des Trockenfluidstroms sichergestellt ist, weisen die Leitelemente 9 eine an ihre Tiefenerstreckung 17 angepasste Breite in Vertikalrichtung 10 bzw. Vertikalerstreckung 23 auf. Je größer diese ist, desto weniger steil ist - bei gegebener Tiefenerstreckung - die von dem Trocknungsfluid 11 angeströmte Flanke 241 der Leitelemente 9. Mit einer Vertikalerstreckung von 1 mm bis 20 mm, vorzugsweise von 3 mm bis 12, lassen sich die oben genannten Tiefenerstreckungen 17 der Leitelemente 9 bei ausreichender Ablenkung für den Trockenfluidstrom verwirklichen.So that a sufficient deflection of the dry fluid flow is ensured, the guide elements 9 have a width in the vertical direction 10 or vertical extension 23 that is adapted to their depth 17. The larger this is, the less steep - for a given depth - the flank 241 of the guide elements 9 against which the drying fluid 11 flows. With a vertical extension of 1 mm to 20 mm, preferably from 3 mm to 12, the above-mentioned depth extensions 17 Realize the guide elements 9 with sufficient deflection for the dry fluid flow.

Ein weiterer sich auf den Trockenfluidstrom auswirkender Parameter ist die Dichte, mit welcher die Leitelemente 9 auf der ebenen Fläche 8 angeordnet sind. Je größer der Abstand der Leitelemente 9 ist, desto geringer ist ihre Dichte und umgekehrt. Je näher die Leitelemente 9 beisammen stehen, je geringer also ihr Abstand in Vertikalrichtung, d.h. ihr Vertikalabstand 21 ist, desto geringer wird ihre ablenkende Wirkung, da jeweils stromabwärts angeordnete Leitelemente 9 quasi im "Windschatten" des stromauf benachbarten Leitelements stehen. Der Vertikalabstand 21 ist daher so gewählt, dass er größer ist als die Vertikalerstreckung 23 der Leitelemente 9, nämlich 1 cm bis 10 cm, vorzugsweise 2 cm bis 5 cm. Unter Einhaltung der genannten Abmessungsbereiche sind 1% bis 20%, vorzugsweise 2% bis 10% der ebenen Fläche 8 mit Leitelementen 9 bedeckt. Zweckmäßigerweise ist zur Bildung einer effektiven Leitstruktur eine Anzahl von 2 bis 8, insbesondere von 3 bis 6, Leitelementen gewählt, die auf der Innenseite der Tür vorgesehen sind.Another parameter that has an effect on the dry fluid flow is the density with which the guide elements 9 are arranged on the flat surface 8. The greater the distance between the guide elements 9, the lower their density and vice versa. The closer the guide elements 9 are together, i.e. the smaller their distance in the vertical direction, i.e. their vertical distance 21, the less their deflecting effect becomes, since each downstream guide elements 9 are quasi in the "slipstream" of the upstream adjacent guide element. The vertical distance 21 is therefore selected so that it is greater than the vertical extension 23 of the guide elements 9, namely 1 cm to 10 cm, preferably 2 cm to 5 cm. In compliance with the stated dimensional ranges, 1% to 20%, preferably 2% to 10% of the flat surface 8 is covered with guide elements 9. To form an effective guide structure, a number of 2 to 8, in particular 3 to 6, guide elements are expediently selected, which are provided on the inside of the door.

Die Leitelemente 9 verlaufen in Breitenrichtung 14 der Tür 3, wobei sie sich vorzugsweise über einen Bereich von 50% bis 90% der Türbreite 24 erstrecken, um eine ausreichende Ablenkwirkung zu gewährleisten.The guide elements 9 run in the width direction 14 of the door 3, whereby they preferably extend over a range of 50% to 90% of the door width 24 in order to ensure a sufficient deflecting effect.

Ferner kann sich ein einziges Leitelement 9 über den genannten Breitenbereich erstrecken oder es sind Reihen 25 von mehreren Leitelementen 9' vorgesehen. Insbesondere kann zwischen je zwei in Breitenrichtung 14 nebeneinander vorgesehenen Reihen 25 von in Höhenrichtung bzw. Vertikalrichtung 10 voneinander beabstandet angeordneten Leitelementen 9', die sich jeweils in Breitenrichtung 14 erstrecken, ein Querabstand 42 vorgesehen sein. Dadurch lassen sich spezifisch an die jeweiligen Strömungs- und Konstruktionsverhältnisse angepasste Leitstrukturen 9* auf einfache Weise bereitstellen.Furthermore, a single guide element 9 can extend over the mentioned width range or rows 25 of several guide elements 9 'are provided. In particular, between two rows 25 provided next to one another in the width direction 14 can be spaced apart from one another in the height direction or vertical direction 10 arranged guide elements 9 ', each extending in the width direction 14, a transverse spacing 42 may be provided. In this way, guide structures 9 * specifically adapted to the respective flow and construction conditions can be provided in a simple manner.

Die Intensität des Trockenfluidstroms nimmt wegen der Ablenkung durch die Leitelemente zusehends ab. Es kann daher zweckmäßig sein, die Leitelemente 9 nur an einem Flächenbereich der Türinnenseite 5 anzuordnen, der sich - bei geschlossener Tür 3 - unterhalb des von der Unterseite des obersten Spülkorbs 4b definierten Höhenniveaus 22 befindet. Im Falle von zwei oder drei übereinander angeordneten Spülkörben 4 ist es daher zweckmäßig, Leitelemente 9 nur in den unteren zwei Drittel der Türinnenseite 5 anzuordnen.The intensity of the dry fluid flow decreases noticeably because of the deflection by the guide elements. It can therefore be expedient to arrange the guide elements 9 only on a surface area of the inside 5 of the door which, when the door 3 is closed, is below the height level 22 defined by the underside of the uppermost washing rack 4b. In the case of two or three washing baskets 4 arranged one above the other, it is therefore expedient to arrange guide elements 9 only in the lower two thirds of the inside 5 of the door.

Anhand von Fig. 2 wird nun der Trocknungsprozess bei einer erfindungsgemäßen Geschirrspülmaschine 1 näher erläutert. Das Trocknungsfluid 11 strömt durch ein am Boden 31 des Spülbehälters 2 angeordnetes Ausströmelement 26 in den Spülbehälter 2 und wird einer erzwungenen Strömung ausgesetzt, die beispielsweise durch eine Umwälzeinrichtung 27, etwa ein Gebläse, welche zweckmäßigerweise im Sockelbauraum 28 der Geschirrspülmaschine 1 positioniert ist, erzielt wird. Das Ausströmelement 26 ist so gestaltet, dass der ihn verlassende Trocknungsfluidstrom zur Innenseite 5 der Tür 3 gerichtet ist und zwar so, dass zumindest ein Teilstrom des Trocknungsfluids 11 im Bereich des untersten Spülkorbs 4a auf die Türinnenseite 5 auftrifft. Das Ausströmelement 26 ist vorzugsweise an dem von der Tür 3 entfernten hinteren Ende 29 des Bodens 31 des Spülbehälters angeordnet. Auf diese Weise ist gewährleistet, dass der überwiegende Teil des Trocknungsfluids 11 durch die Unterseite des untersten Spülkorbs 4a hindurch nach oben strömt (Pfeile 39) und dabei in dem Spülkorb 4a und in dem sich darüber befindlichen Spülkorb 4b vorhandenes Spülgut 30 trocknet. An einem sich oberhalb des oberen Spülkorbs 4b befindlichen Höhenniveau ist in einer seitlichen Spülbehälterwand ein Auslass 33 vorhanden, über den das Trocknungsfluid 11 angesaugt und über eine Leitung 34 zum Ausströmelement 26 zurückgeführt wird. Stromabwärts der Umwälzeinrichtung 27 ist ein Flüssigkeit absorbierendes Element, insbesondere Zeolith-Trockungselement 40 angeordnet, welches dem Trocknungsfluid 11 Wasser entzieht. Das Trocknungselement 40, die Umwälzeinrichtung 27, das Ausströmelement 26, der Auslass 33 sowie deren Verbindungsleitungen sind Bestandteile eines Luftzirkulationssystems 41. Wie bereits gesagt, strömt ein Teil des Trocknungsfluids 11 gegen einen unteren Bereich der Türinnenseite 5 und wird dabei vertikal nach oben abgelenkt, wobei das Trocknungsfluid 11 zunächst einen zwischen dem unteren Spülkorb 4a und der Türinnenseite 5 vorhandenen Freiraum 35 durchströmt. Die dort an der Türinnenseite 5 bzw. der ebenen Fläche 8 vorhandenen Leitelemente 9 lenken das den Freiraum 35 durchströmende Trocknungsfluid auf das Spülgut 30, welches am nächsten zur Tür angeordnet ist (siehe Pfeile 36). Das oberste Leitelement 9a ist im Bereich der maximalen Beladehöhe 37 des Spülkorbs 4a positioniert, wobei es Trocknungsfluid 11 über das Spülgut 30 hinweg gegen die Unterseite des oberen Spülkorbs 4b ablenkt (siehe Pfeil 38). In dem Freiraum 35' zwischen dem oberen Spülkorb 4b und der Innenseite 5 der Tür 3 sind vorzugsweise keine Leitelemente 9 angeordnet, da sich dadurch Trocknungsergebnis allenfalls nur noch geringfügig verbessern lässt.Based on Fig. 2 the drying process in a dishwasher 1 according to the invention will now be explained in more detail. The drying fluid 11 flows through an outflow element 26 arranged on the bottom 31 of the washing container 2 into the washing container 2 and is subjected to a forced flow which is achieved, for example, by a circulating device 27, such as a fan, which is expediently positioned in the base installation space 28 of the dishwasher 1 . The outflow element 26 is designed in such a way that the drying fluid flow leaving it is directed towards the inside 5 of the door 3 in such a way that at least a partial flow of the drying fluid 11 hits the door inside 5 in the area of the lowermost wash basket 4a. The outflow element 26 is preferably arranged at the rear end 29 of the bottom 31 of the washing compartment, which is remote from the door 3. This ensures that the majority of the drying fluid 11 flows up through the underside of the lowermost wash basket 4a (arrows 39) and dries items 30 in the wash basket 4a and in the wash basket 4b located above it. At a height above the upper wash basket 4b, there is an outlet 33 in a side wall of the wash basin, through which the drying fluid 11 is sucked in and returned to the outflow element 26 via a line 34. A liquid-absorbing element, in particular a zeolite drying element 40, which removes water from the drying fluid 11, is arranged downstream of the circulating device 27. The drying element 40, the circulation device 27, the outflow element 26, the outlet 33 and their connecting lines are components of an air circulation system 41. As already mentioned, part of the drying fluid 11 flows towards a lower area of the door inside 5 and is deflected vertically upwards, the drying fluid 11 initially flowing through a free space 35 existing between the lower washing basket 4a and the door inside 5. The guide elements 9 present there on the inside of the door 5 or the flat surface 8 direct the drying fluid flowing through the free space 35 onto the items to be washed 30, which are arranged closest to the door (see arrows 36). The uppermost guide element 9a is positioned in the area of the maximum loading height 37 of the wash basket 4a, deflecting drying fluid 11 over the wash items 30 towards the underside of the upper wash basket 4b (see arrow 38). In the free space 35 'between the upper washing rack 4b and the inside 5 of the door 3, there are preferably no guide elements 9, since this can only improve the drying result slightly.

Zusammenfassend betrachtet sind zweckmäßigerweise im ebenen bzw. glatten Wannengrund der Innentür, der von einer Randwulst ringsum eingeschlossen ist, zusätzlich eine oder mehrere gegenüber dem Wannengrund hervorstehende Leitelemente zur Luftumlenkung bzw. Luftumleitung vorgesehen. Die Leitelemente sind vorzugsweise bei einer metallischen Innentürwandung von außen nach innen, d.h. in Richtung der dem Behandlungsraum zugewandten Seite eingedrückt oder eingeformt, insbesondere einprägt (durch Prägeverfahren), oder eingeformt durch hydraulisches Umformen. Sie sind zusätzlich auf der ansonsten ebenen Fläche der Innentür vorgesehen und stehen aus dieser hervor. Ggf. kann die Randwulst der Innentür bei manchen Varianten von Geschirrspülmaschinen weggelassen sein: Die erhabenen Leitelemente können jeweils als linienförmige(r) bzw. schmale(r) streifenförmige(r) Rippe oder Steg ausgebildet sein, der in Breitenrichtung der Innentür verläuft. Vorzugsweise sind mehrere, insbesondere zwischen 3 und 6, Leitelemente jeweils in einem vorgebbaren Vertikalabstand übereinander angeordnet. Diese Vielzahl von Leitelementen bildet ein Leitstruktur in Stapelform. Alternativ kann eine Leitstruktur ggf. auch als Logo, Symbol, Schriftzeichensatz, usw. ausgebildet sein. Die eine oder die Vielzahl von abstehenden Strukturen dienen der gezielten Luftführung und Luftumlenkung auf einen gewünschten Bereich im Inneren des Spülbehälters. Normalerweise, d.h. ohne zusätzliche Luftleitelemente, würde eine Luftströmung im Spaltraum bzw. Freiraum zwischen der dem Innenraum des Spülbehälters zugewandten Wandung der Innentür und den Frontseiten der beiden Geschirrkörbe in vertikaler Richtung (, insbesondere in den Ausführungsbeispielen der Figuren 1 - 6 von unten nach oben,) entlang streichen und damit für die Trocknung von Spülgut in den ein oder mehreren Spülkörben, insbesondere Geschirrkörben, weitgehend ungenutzt bleiben. Dann käme unter Umständen zu wenig Luft zum zu trocknenden Spülgut, das im Inneren des jeweiligen Geschirrkorbs gelagert ist. Insbesondere käme zu wenig an Luftströmung, d.h. bewegter Luft in den Zwischenraum zwischen dem Unterkorb und dem Oberkorb, so dass keine ausreichende Belüftung des Spülguts im Oberkorb von unten her sichergestellt werden könnte.In summary, one or more guide elements protruding from the tub base for air deflection or air diversion are expediently provided in the flat or smooth tub base of the inner door, which is enclosed by an edge bead all around. In the case of a metallic inner door wall, the guide elements are preferably pressed in or molded in from the outside inwards, ie in the direction of the side facing the treatment room, in particular embossed (by embossing processes), or molded in by hydraulic forming. They are also provided on the otherwise flat surface of the inner door and protrude from it. If necessary, the beaded edge of the inner door can be omitted in some variants of dishwashers: The raised guide elements can each be designed as a linear or narrow strip-shaped rib or web that runs in the width direction of the inner door. A plurality of guide elements, in particular between 3 and 6, are preferably arranged one above the other at a predeterminable vertical distance. This multitude of guide elements forms a guide structure in stack form. Alternatively, a guide structure can optionally also be designed as a logo, symbol, font, etc. The one or the plurality of protruding structures are used for targeted air guidance and air deflection to a desired area in the interior of the washing compartment. Normally, that is to say without additional air guiding elements, an air flow would occur in the gap or free space between the wall of the inner door facing the interior of the washing compartment and the front sides of the two crockery baskets in the vertical direction (especially in the exemplary embodiments of Figures 1 - 6 from bottom to top,) and thus remain largely unused for drying items to be washed in the one or more wash racks, in particular crockery racks. Then, under certain circumstances, too little air would come to the wash items to be dried, which are stored in the interior of the respective crockery basket. In particular, there would be too little air flow, ie moving air into the space between the lower basket and the upper basket, so that sufficient ventilation of the items to be washed in the upper basket could not be ensured from below.

Um eine möglichst gleichmäßige Luftzufuhr zu möglichst allen Bereichen des jeweiligen Spülkorbs, insbesondere des oberen Geschirrkorbs, für eine möglichst gleichmäßige Trocknung von dort gelagertem Spülgut im Trocknungsgang des jeweiligen Geschirrspülprogramms sicherstellen zu können, sind jetzt die zusätzlichen, ein oder mehreren vorspringenden bzw. abstehenden Leitelemente bzw. Profilelemente auf der ansonten glatten, d.h. ebenen Innentürfläche vorgesehen. Dadurch ist eine bessere Belüftung des Spülguts in den Spülkörben wie z.B. im oberen Geschirrkorb und/oder in einer darüber angeordneten Besteckschublade sichergestellt. Die Leitelemente sind zusätzlich zu den üblicherweise vorhandenen Konstruktionskomponenten wie z.B. einem im Bereich einer oberen Randzone der Tür vorhandenen Einbauvorsprung für eine Reiniger-/Klarspülmittelzugabe vorgesehen. Sie führen die Luft zu Bereichen der ein oder mehreren Spülkörbe, insbesosndere Geschirrkörbe, die mit Spülgut bestückt sind. Sie dienen also der gezielten, d.h. bewußt aufgezwungenen Verteilung bzw. Führung von Luft vom frontseitigen, vorderen Luftschacht zwischen den Spülkörben und der Innentürfläche in das Innere des Behandlungsraums, insbesondere in das Innere des jeweiligen Spülkorbs.In order to be able to ensure the most uniform possible air supply to all areas of the respective wash basket, in particular the upper crockery basket, for the most uniform possible drying of items stored there in the drying cycle of the respective dishwashing program, the additional, one or more protruding or protruding guide elements or Profile elements are provided on the otherwise smooth, ie flat inner door surface. This ensures better ventilation of the items to be washed in the wash baskets, e.g. in the upper crockery basket and / or in a cutlery drawer above. The guide elements are provided in addition to the construction components that are usually present, such as an installation protrusion in the area of an upper edge zone of the door for adding detergent / rinse aid. They lead the air to areas of the one or more wash baskets, especially crockery baskets, which are filled with items to be washed. They are therefore used for the targeted, i.e. deliberately forced distribution or guidance of air from the front air duct between the washing baskets and the inner door surface into the interior of the treatment room, in particular into the interior of the respective washing basket.

Ggf. kann die Luft bevorzugt zu einer speziellen Zone des jeweiligen Spülkorbs, insbesondere Geschirrkorbs geführt/gelenkt werden, der für Spülgut, insbesondere Geschirrgut vorgesehen ist, das besondere Anforderungen an die Trocknungsleistung stellt. Dies kann beispielsweise ein Bereich des Spülkorbs sein, der speziell für Plastik- bzw. Kunststoffgeschirr vorgesehen ist, das aufgrund seiner fehlenden Masse schwieriger als Keramik oder Porzellan zu trocknen ist.If necessary, the air can preferably be guided / directed to a special zone of the respective wash basket, in particular a crockery basket, which is provided for items to be washed, in particular items to be washed, which place particular demands on the drying performance. This can be, for example, an area of the washing basket that is specially intended for plastic or plastic dishes, which is more difficult to dry than ceramic or porcelain due to its lack of mass.

Die Leitelemente bzw. verallgemeinert ausgedrückt die Leitstrukturen stehen vorzugsweise zwischen 1 mm und 10 mm, insbesondere zwischen 3 und 7 mm gegenüber der ebenen bzw. planen, dem Innenraum des Spülbehälters zugewandten Innenfläche der Innentür ab. (Mehr ist nicht sinnvoll, da der Luftströmungsweg zwischen der Innentürwandung und der Frontseite der Geschirrkörbe nicht zu sehr eingeengt werden darf, um einen Abriss der Luftzirkulation im Innenraum des Spülbehälters zu vermeiden.) Der Vorsprung der ein oder mehreren Leitstrukturen gegenüber der planen Innenfläche der Innentür ist jeweils flach gegenüber einem etwaig vorhandenen Einbauvorsprung für die Reiniger-/Klarspülerzugabe. Die jeweilige Leitstruktur ist auch wesentlich flacher als eine Randwulst, die bei vielen Türkonstruktionen oftmals die Türwanne der Tür umgibt. Die jeweilige Leitstruktur weist bei in Vertikalstellung vollständig geschlossener Tür vorzugsweise eine gegenüber deren Türwanne in Tiefenrichtung abstehende Erstreckung zwischen 2% und 20% der Tiefenerstreckung der Randwulst auf.The guide elements or, in generalized terms, the guide structures protrude preferably between 1 mm and 10 mm, in particular between 3 and 7 mm, from the flat or planar inner surface of the inner door facing the interior of the washing compartment. (More does not make sense, as the air flow path between the inner door wall and the front of the crockery baskets must not be too narrow to avoid the air circulation in the interior of the washing container being torn off.) The protrusion of the one or more guide structures over the flat inner surface of the inner door is flat in relation to any existing installation protrusion for adding detergent / rinse aid. The respective guide structure is also much flatter than a bead that often surrounds the door pan of the door in many door constructions. When the door is completely closed in the vertical position, the respective guide structure preferably has an extension between 2% and 20% of the depth of the edge bead protruding in the depth direction relative to its door pan.

Die ein oder mehreren Leitstrukturen, insbesondere deren Leitelemente, sind vorzugsweise auf dem unteren 2/3 der Türinnenwandung vorgesehen. Das obere Drittel der Tür bleibt von Leitstrukturen frei (bei Vertikalstellung der Tür in Höhenrichtung betrachtet). Dann kann eine Luftströmung, die von unten aus dem bodennahen Bereich des Spülbehälters nach oben aufsteigt, noch rechtzeitig vor Erreichen der Deckenwandung des Spülbehälters, insbesondere vor Erreichen des Oberkorbss ausreichend aufgeteilt und in den Innenraum des Spülbehälters mit einer Strömungskomponente in Tiefenrichtung umgelenkt werden. Insbesondere ist dadurch die Belüftung des Oberkorbs von unten her verbessert sichergestellt. Die ein oder mehreren Leitstrukturen sind vorzugsweise auf 1% bis 20%, insbesondere zwischen 2% und 10% der Innenwandfläche der Tür verteilt.The one or more guide structures, in particular their guide elements, are preferably provided on the lower 2/3 of the door inner wall. The upper third of the door remains free of guide structures (when the door is positioned vertically, viewed in height direction). An air flow that rises from below from the area of the washing container close to the floor can then be sufficiently divided up in good time before it reaches the top wall of the washing container, in particular before reaching the upper basket, and diverted into the interior of the washing container with a flow component in the depth direction. In particular, this ensures improved ventilation of the upper basket from below. The one or more conductive structures are preferably distributed over 1% to 20%, in particular between 2% and 10% of the inner wall surface of the door.

Im Fall von mehreren auf der Innentürseite querverlaufenden, d.h. sich in Breitenrichtung der Innentür erstreckenden Leitelementen, insbesondere Leitrippen oder Leitstege, sind diese vorzugsweise im Wesentlichen parallel sowie mit Höhenabstand zueinander angeordnet (bezogen auf die vertikale Schließstellung der Tür). Der Höhen- bzw. Vertikalabstand je zweier benachbarter Leitelemente ist insbesondere größer als die Höhenerstreckung des jeweiligen Leitelements (Höhe bezogen auf die vertikale Schließendstellung der Tür). Der Höhenabstand von einer Leitrippe zur nächsten Leitrippe ist vorzugsweise zwischen 1 cm und 10 cm, insbesondere zwischen 2 cm und 5 cm gewählt. Die Höhenerstreckung des jeweiligen Leitelements (, d.h. dessen Breite in Höhenrichtung der Tür in deren vertikalen Schließstellung betrachtet) ist vorzugsweise zwischen 1 mm und 20 mm, insbesondere zwischen 3 mm bis 12 mm, gewähltIn the case of several guide elements running transversely on the inner door side, ie extending in the width direction of the inner door, in particular guide ribs or guide webs, these are preferably arranged essentially parallel and at a vertical distance from one another (based on the vertical closed position of the door). The height or vertical distance of any two adjacent guide elements is in particular greater than the height extension of the respective guide element (height based on the vertical closed end position of the door). The height distance from one guide rib to the next guide rib is preferably between 1 cm and 10 cm, in particular between 2 cm and 5 cm elected. The height extension of the respective guide element (ie its width viewed in the height direction of the door in its vertical closed position) is preferably selected between 1 mm and 20 mm, in particular between 3 mm and 12 mm

Die Breitenerstreckung des jeweiligen Leitelements in Breitenrichtung der Innentür betrachtet ist zwischen 50% und 90% der Gesamtbreite der Tür gewählt. Es sind zwischen 2 und 8, insbesondere zwischen 3 und 6, Leitelemente zweckmäßig, um eine ausreichende Ablenkung und Umverteilung der Luftströmung von der Türinnenseite weg in den Innenraum des Spülbehälters bewirken zu können. Zweckmäßig kann es insbesondere sein, wenn die Leitelemente entlang der Höhenerstreckung des Unterkorbs (von dessen Unterkante bis zu dessen Oberkante) verteilt in der ebenen Fläche der Innentür vorgesehen sind, um die vordere, nach oben ziehende Luftströmung in den Spaltzwischenraum zwischen Unterkorb und Oberkorb zwangsführen zu können.The width extension of the respective guide element, viewed in the width direction of the inner door, is selected between 50% and 90% of the total width of the door. Between 2 and 8, in particular between 3 and 6, guide elements are expedient in order to be able to effect a sufficient deflection and redistribution of the air flow from the inside of the door into the interior of the washing compartment. It can be particularly useful if the guide elements are distributed along the height of the lower basket (from its lower edge to its upper edge) in the flat surface of the inner door in order to force the front, upward air flow into the gap between the lower basket and the upper basket can.

BEZUGSZEICHENLISTEREFERENCE LIST

  • 1 Geschirrspülmaschine1 dishwasher
  • 2 Spülbehälter2 rinsing containers
  • 3.Tür3rd door
  • 4a, 4b Spülkorb4a, 4b washing basket
  • 5 Innenseite5 inside
  • 6 Zugabeeinrichtung6 Feeding device
  • 8 ebene Fläche8 flat surface
  • 9, 9' Leitelement9, 9 'guide element
  • 9* Leitstruktur9 * lead structure
  • 10 Vertikalrichtung bzw. Höhenrichtung10 Vertical direction or height direction
  • 11 Trocknungsfluid11 drying fluid
  • 14 Breitenrichtung14 width direction
  • 15a, 15b Kontur15a, 15b contour
  • 16 Tiefenrichtung16 Depth direction
  • 17 Tiefenerstreckung17 depth extension
  • 18 Randwulst18 Beaded edge
  • 19 Tiefenerstreckung19 depth extension
  • 20 Aufnahmevorsprung20 Support protrusion
  • 21 Vertikalabstand21 vertical spacing
  • 22 Höhenniveau22 height level
  • 23 Vertikalerstreckung23 vertical extension
  • 24 Türbreite24 door width
  • 25 Reihe25 row
  • 26 Ausströmelement26 discharge element
  • 27 Umwälzeinrichtung27 Circulation device
  • 28 Sockel28 base
  • 29 hinteres Ende29 rear end
  • 30 Spülgut30 items to be washed
  • 31 Boden31 floor
  • 32 Präge-Formteil32 Embossed part
  • 33 Auslass33 outlet
  • 34 Leitung34 Leadership
  • 35 Freiraum35 space
  • 36 Pfeil36 arrow
  • 37 Beladehöhe37 loading height
  • 38 Pfeil38 arrow
  • 39 Pfeil39 arrow
  • 40 Zeolith-Trocknungselement40 zeolite drying element
  • 41 Zirkulationstrocknungssystem41 Circulation drying system
  • 42 Querabstand42 transverse spacing
  • 241 Flanke241 edge

Claims (20)

  1. Dishwasher (1), in particular a household dishwasher, having a washing compartment (2), having one or more washing baskets (4a, 4b) which are disposed in the washing compartment and serve to hold items for washing (30), and having a front door (3) for closing the washing compartment (2), characterised in that when viewed with the front door (3) in the closed position, at least one guide structure (9*) in the form of a number of individual guide elements (9) spaced vertically apart from one another projects in a raised manner from a planar surface (8), which forms the inner face (5) of the front door (3) as a whole or a part thereof, into the interior of the washing compartment (2) and is disposed in such a manner that a drying fluid (11) flowing along the inner face (5) of the door (3) is guided onto the one or more washing baskets (4a, 4b) arranged in the washing compartment (2) or onto items for washing (30) disposed in the washing compartment (2) on the one or more washing baskets (4a, 4b) when the dishwasher (1) is in drying mode.
  2. Dishwasher according to claim 1, characterised in that the vertical distance (21) between two adjacent guide elements (9) in each instance is greater than the vertical extension (23) of the respective guide element (9).
  3. Dishwasher according to claim 2, characterised in that a vertical distance (23) of 1 cm to 10 cm, in particular 2 cm to 5 cm, is selected between two adjacent guide elements (9) in each instance.
  4. Dishwasher according to one of the preceding claims, characterised in that the number of guide elements (9) run essentially parallel to one another.
  5. Dishwasher according to one of the preceding claims, characterised in that the respective guide element (9) is configured in the form of an in particular linear guide rib extending in the widthwise direction (14) of the front door (3).
  6. Dishwasher according to one of the preceding claims, characterised in that when viewed with the front door (3) in the closed position the respective guide element (9) has a vertical extension (23) of 1 mm to 20 mm, in particular 3 mm to 12 mm.
  7. Dishwasher according to one of the preceding claims, characterised in that when viewed with the front door (3) in the closed position the one or more guide structures (9*) each have a depthwise extension (17) of 1 mm to 10 mm, preferably 3 mm to 7 mm, protruding by this in each instance from the planar surface (8) of its inner face (5) into the interior of the washing compartment (2), when viewed with the front door (3) in the closed position.
  8. Dishwasher according to one of the preceding claims, characterised in that the door inner face (5) has a trough-type recess (12) delimited by a peripheral bead (18).
  9. Dishwasher according to claim 8, characterised in that when viewed with the front door (3) in the closed position, the depthwise extension (17) of the one or more guide structures (9*), in particular guide elements (9), is in each case 2% to 20%, in particular 5% to 15%, of the depthwise extension (19) of the peripheral bead (18) of the front door (3)
  10. Dishwasher according to one of the preceding claims, characterised in that when viewed with the front door (3) in the closed position, the depthwise extension (17) of the one or more guide structures (9*), in particular guide elements (9), is in each case 2% to 20%, in particular 5% to 15%, of a holding projection (20) projecting from the planar surface (8) of the inner face (5) of the front door (3) and serving to hold a functional component.
  11. Dishwasher according to one of the preceding claims, characterised in that 1% to 20%, in particular 2% to 10%, of the planar surface (8) of the inner face (5) of the front door (3) is covered by the at least one guide structure (9*), in particular by the guide elements (9).
  12. Dishwasher according to one of the preceding claims, characterised in that the one or more guide structures (9*), in particular guide elements (9), extend over 50% to 90% of the width (24) of the front door (3).
  13. Dishwasher according to one of the preceding claims, characterised in that the one or more guide structures (9*), in particular guide elements (9), are only disposed in the lower two thirds of the inner face (5) of the front door (3).
  14. Dishwasher according to one of the preceding claims, characterised in that the one or more guide structures (9*), in particular guide elements (9), are only disposed on a surface region of the inner face (5) of the front door (3), which is located below the height level (22) defined by the lower face of an upper or topmost washing basket (4a).
  15. Dishwasher according to one of the preceding claims, characterised in that between 2 and 8, in particular between 3 and 6, guide elements (9) are provided on the inner face (5) of the front door (3).
  16. Dishwasher according to one of the preceding claims, characterised in that the one or more guide structures (9*), in particular guide elements (9), are configured as a single piece with a stamped and moulded part (32) forming the door inner face (5).
  17. Dishwasher according to one of the preceding claims, characterised by a circulation drying system (41) serving to dry the drying fluid (11), in particular comprising an absorption drying element, preferably a zeolite drying element (40).
  18. Dishwasher (2) according to one of the preceding claims, characterised by a circulating facility (27) for the forced circulation of the drying fluid (11).
  19. Dishwasher according to one of the preceding claims, characterised by an outflow element present (26) in the washing compartment (2), which is configured in such a manner that the drying fluid (11) flowing into the washing compartment is guided at least partially with a direction component running essentially horizontally towards the inner face (5) of the front door (3).
  20. Dishwasher according to claim 19, characterised in that the outflow element (26) is disposed in the base (31) of the washing compartment (2).
EP13736797.5A 2012-07-04 2013-06-21 Dishwasher, in particular domestic dishwasher, comprising at least one guide structure on the inner face of the door thereof for deflecting drying fluid flowing along therefrom Active EP2869747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13736797T PL2869747T3 (en) 2012-07-04 2013-06-21 Dishwasher, in particular domestic dishwasher, comprising at least one guide structure on the inner face of the door thereof for deflecting drying fluid flowing along therefrom

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DE102012211627.3A DE102012211627B4 (en) 2012-07-04 2012-07-04 Dishwasher, in particular household dishwasher, with at least one guide structure on the inside of its door for deflecting drying fluid flowing therealong
PCT/EP2013/062988 WO2014005857A2 (en) 2012-07-04 2013-06-21 Dishwasher, in particular domestic dishwasher, comprising at least one guide structure on the inner face of the door thereof for deflecting drying fluid flowing along therefrom

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EP2869747A2 EP2869747A2 (en) 2015-05-13
EP2869747B1 true EP2869747B1 (en) 2021-04-28

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US (2) US9901241B2 (en)
EP (1) EP2869747B1 (en)
CN (1) CN104582556B (en)
DE (1) DE102012211627B4 (en)
PL (1) PL2869747T3 (en)
WO (1) WO2014005857A2 (en)

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Publication number Publication date
PL2869747T3 (en) 2021-11-02
US20150157186A1 (en) 2015-06-11
WO2014005857A2 (en) 2014-01-09
US20180103826A1 (en) 2018-04-19
DE102012211627B4 (en) 2024-11-07
WO2014005857A3 (en) 2014-06-26
US10945583B2 (en) 2021-03-16
CN104582556B (en) 2017-10-27
US9901241B2 (en) 2018-02-27
EP2869747A2 (en) 2015-05-13
CN104582556A (en) 2015-04-29
DE102012211627A1 (en) 2014-01-09

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