EP0796587B1 - Dishwasher - Google Patents

Dishwasher Download PDF

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Publication number
EP0796587B1
EP0796587B1 EP97101983A EP97101983A EP0796587B1 EP 0796587 B1 EP0796587 B1 EP 0796587B1 EP 97101983 A EP97101983 A EP 97101983A EP 97101983 A EP97101983 A EP 97101983A EP 0796587 B1 EP0796587 B1 EP 0796587B1
Authority
EP
European Patent Office
Prior art keywords
coupling
plate
machine according
dishwashing machine
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97101983A
Other languages
German (de)
French (fr)
Other versions
EP0796587A2 (en
EP0796587A3 (en
Inventor
Gerhard Dipl.-Ing. Fetzer (Fh)
Michael Dipl.-Ing. Hartmann (Fh)
Markus Dipl.-Ing. Höpfl (FH)
Helmut Dipl.-Ing. Jerg (Fh)
Karl-Heinz Dipl.-Ing. Rehm (Fh)
Rudolf Dipl.-Ing. Schmidt (Fh)
Bernd Dipl.-Ing. Schessl (Fh)
Johann Wilhelmstätter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0796587A2 publication Critical patent/EP0796587A2/en
Publication of EP0796587A3 publication Critical patent/EP0796587A3/en
Application granted granted Critical
Publication of EP0796587B1 publication Critical patent/EP0796587B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/50—Racks ; Baskets
    • A47L15/508—Hydraulic connections for racks
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays

Definitions

  • the invention relates to a dishwasher with at least one adjustable in height Dish rack on which an associated spray arm and its feed pipe is attached, wherein the inlet pipe arranged horizontally and by means of a coupling with one on a side wall a rinsing tank attached supply line with one towards the inlet pipe protruding open connecting piece and two closed in the direction of the inlet pipe projecting blind connector is connected, wherein the coupling has two openings into which the connection piece and one of the blind pieces protrudes.
  • a dishwasher of the type mentioned where the coupling when inserting the crockery basket due to the conical Design of the two openings, the connecting piece and the blind piece is found and in which the two openings only because of the attachment of the attached to the crockery basket Feed pipe on the feed line and the conical shape of the two Openings, the connection piece and the blind piece are sealed, due to the after loading different bending of the crockery basket and thus different Position of the feed pipe, manufacturing tolerances of the crockery basket and its guides, Surface irregularities etc. result in difficulties when merging the coupling with the appropriate connector and it is almost impossible this coupling at the water pressures in the water supply to a dishwasher to operate without fluid leakage at the coupling points.
  • This fluid leak on the coupling does not lead to loss of fluid in a closed rinsing container, but leads to pressure losses in the water supply to that by means of the supply Coupling connected spray arm, which worsens the cleaning result leads.
  • the invention is therefore based on the object of a dishwasher in a simple manner of the type mentioned at the outset, regardless of the load the crockery basket a secure merging of the coupling with the nozzle is possible and with the pressure losses in the water supply to that by means of the supply spray arm connected with coupling and resulting deterioration of the Cleaning results can be effectively avoided.
  • the coupling Due to the sealing plate that can be moved in all directions, the coupling is displaced due to the different according to the different loading of the crockery basket Position of the coupling when the coupling is moved together with the connecting piece of the feed pipe balanced. If water pressure occurs in the coupling, it happens a sealing concern of the flexible sealing lips on the connecting piece and on the protruding blind spigot and on the centering plate, making water loss effective are prevented.
  • the arrangement according to the invention is a simple Dishwasher of the type mentioned created, regardless of the Loading the crockery basket a secure merging of the clutch with the Nozzles are possible and the pressure drops in the water supply to the means of Supply of spray arm connected with coupling and resulting deterioration the cleaning result can be effectively avoided.
  • the openings face one towards the inside conical shape of the coupling.
  • a flexible is in the sealing plate Plate with sealing lips used, which enables easy manufacture.
  • the flexible plate is expediently made of rubber, which is a further relief the manufacturing means.
  • the sealing plate are flexible on the sealing plate Molded sealing lips, alternatively has the according to a further advantageous embodiment Invention, the sealing plate a coating of flexible material that has flexible sealing lips. Both embodiments show further possibilities by means of simple manufacture to generate the sealing function of the sealing plate.
  • the blind connectors have a conical shape Tips that protrude in front of the free end of the connecting piece, with which an additional Guide for easier insertion of the nozzle into the coupling is created.
  • the centering plate is preferably in the housing of the coupling by means of snap connections attached, whereby a simple assembly of the device is achieved.
  • locking knobs are arranged on a peripheral edge of the centering plate, which fall into locking openings of the housing, which further simplifies the Manufacturing and assembly means.
  • the centering plate is against the housing of the clutch sealed by means of a labyrinth-like sealing arrangement, which is another cause for possible water loss is avoided.
  • the labyrinth-like sealing arrangement is expediently replaced by the circumferential one Edge of the centering plate and one encircling within the circumferential edge of the centering plate arranged sealing edge of the housing of the coupling is formed, which makes a simple Manufacturing is guaranteed.
  • a housing of the coupling is advantageously produced in one piece with the inlet pipe, which means a further simplification of the device according to the invention.
  • the housing of the coupling expediently has receptacles and counterholders for Longitudinal wires of the crockery basket, making the inventive assembly easy to assemble Device is achieved.
  • a dishwasher according to the invention has in the shown Embodiment a, not shown, in height adjustable crockery basket on which is assigned an associated spray arm 8 and its inlet pipe 10.
  • the spray arm 8 is by means of a bearing 9 not explained in more detail on the horizontally arranged inlet pipe 10 stored.
  • the inlet pipe 10 is connected to a by means of a coupling 11 on a side wall of a rinsing container, in the exemplary embodiment shown on the rear wall 1 of the rinsing tank attached supply line 2 connected.
  • the feed line 2 has an open connecting piece 3 and projecting in the direction of the inlet pipe 10 two closed blind stubs 4, 5 projecting in the direction of the inlet pipe 10.
  • the Blind sockets 4, 5 have conical tips 6, 7, which are in front of the free end of the connecting piece 3 project.
  • the coupling 11 of the inlet pipe 10 has an inlet pipe in the exemplary embodiment 10 one-piece housing 12, in which a centering plate 15 as a front end the coupling 11 in the vertical position, essentially parallel to the feed line 2 is snapped in via snap connections. These rest connections will be by means of locking knobs 19 arranged on a peripheral edge 18 of the centering plate 15 formed, which occur during assembly in locking openings 14 of the housing 12.
  • the centering plate 15 is against the housing 12 of the coupling 11 by means of a labyrinth-like sealing arrangement sealed by the peripheral edge 18 of the centering plate 15 and one circumferentially arranged within the peripheral edge 18 of the centering plate 15 Sealing edge 13 of the housing 12 of the coupling 11 is formed.
  • the coupling 11 points towards the supply line 2 End in the flow direction behind the centering plate 15, a sealing plate 20 with flexible Sealing lips 28, 29, which in the exemplary embodiment shown as a sealing plate 20 with a inserted flexible plate 25 is executed and between the housing 12 of the coupling 11 and the centering plate 15 is freely movable.
  • the flexible plate 25 is shown in FIG Embodiment made of rubber.
  • the sealing plate 20 encloses with an advanced outer edge 23 surrounding the circumference of the flexible plate 25. Adjacent to the circumferential edge 23 of the sealing plate 20, the flexible plate 25 has the circumferential Sealing lip 28, which rests on the centering plate 15.
  • the clutch 11 has in the mentioned Plates 15, 20 and 25 each have two openings 16 and 17, 21 and 22, 26 and 27 into which each of the connection piece 3 and one of the blind piece 4, 5 of the feed line 2, in the Figure 1 shown position of the embodiment protrudes the upper blind connector 4, wherein the two openings 26, 27 in the flexible plate 25 one to the inside of the coupling 11 have a narrowing, conical shape, as best seen in FIG. 2. These openings 26, 27 are each surrounded by a peripheral edge 24 of the sealing plate 20.
  • the flexible plate 25 has the openings 26, 27 adjacent to the end of the openings 26, 27 circumferential sealing lips 29, which bear against the centering plate 15.
  • the housing 12 further has adjacent to the front end on the centering plate 15 a receptacle 30 with a counter-holder designed as a spring hook in the exemplary embodiment 31 and at the rear end adjacent to the bearing 9 of the spray arm 8 another Recording 32, which are integrally formed on the housing 12 for fastening the Feed pipe 10 on longitudinal wires, not shown, of the crockery basket.
  • the dishwasher basket Before putting the dishwasher into operation, the dishwasher basket is loaded with cleaning items to be washed inserted into the rinsing container on guides not shown.
  • one of the dummy connections 4, 5 comes into contact with its conical tip 6, 7 with the corresponding opening 26, 27 in the flexible plate 25 of the sealing plate 20, in the position shown of the embodiment shown, the dummy connector 4 comes with the opening 26 in contact and thereby raises or lowers the sealing plate 20 accordingly the exact position of the crockery basket before the connecting piece 3 in the corresponding Opening 26, 27, in the exemplary embodiment shown, enters opening 27.
  • the crockery basket closes a door, not shown, and the Operation of the dishwasher can be started.
  • the free movement of the sealing plate 20 makes it easy to find the Coupling 11 with the connecting pieces 3, 4, 5 to be reached.
  • sealing between Housing 12 and centering plate 15, between centering plate 15 and sealing plate 20, or flexible plate 25 and between nozzle 3, 4, 5 and openings 26, 27 are water losses effectively prevented.
  • a dishwasher of the type mentioned in which independently from the loading of the crockery basket a secure merging of the coupling 11 with the nozzle 3, 4, 5 is possible and in the pressure loss in the water supply to that by means of the feed pipe 10 with coupling 11 from the feed line 2 connected spray arm 8 and resulting deterioration in the cleaning result can be effectively avoided.

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  • Washing And Drying Of Tableware (AREA)

Description

Die Erfindung betrifft eine Geschirrspülmaschine mit wenigstens einem in der Höhe verstellbaren Geschirrkorb an dem ein zugeordneter Sprüharm und dessen Zulaufrohr befestigt ist, wobei das Zulaufrohr horizontal angeordnet und mittels einer Kupplung mit einer an einer Seitenwand eines Spülbehälters befestigten Zuführungsleitung mit einem in Richtung zum Zulaufrohr vorstehenden offenen Anschlußstutzen und zwei geschlossenen in Richtung zum Zulaufrohr vorstehenden Blindstutzen verbunden ist, wobei die Kupplung zwei Öffnungen aufweist, in die jeweils der Anschlußstutzen und einer der Blindstutzen einragt.The invention relates to a dishwasher with at least one adjustable in height Dish rack on which an associated spray arm and its feed pipe is attached, wherein the inlet pipe arranged horizontally and by means of a coupling with one on a side wall a rinsing tank attached supply line with one towards the inlet pipe protruding open connecting piece and two closed in the direction of the inlet pipe projecting blind connector is connected, wherein the coupling has two openings into which the connection piece and one of the blind pieces protrudes.

Aus der DE-OS 23 55 271 ist eine Geschirrspülmaschine der eingangs genannten Art bekannt, bei der die Kupplung beim Einschieben des Geschirrkorbes aufgrund der konischen Gestaltung der beiden Öffnungen, des Anschlußstutzens und der Blindstutzen gefunden wird und bei der die zwei Öffnungen lediglich aufgrund der Anlage des an dem Geschirrkorb befestigten Zuführungsrohr an der Zuführungsleitung und der konischen Gestaltung der beiden Öffnungen, des Anschlußstutzens und der Blindstutzen abgedichtet sind, Aufgrund der je nach Beladung unterschiedlichen Verbiegung des Geschirrkorbes und damit unterschiedlichen Lage des Zuführrohres, Fertigungstoleranzen des Geschirrkorbes und seiner Führungen, Oberflächenunebenheiten usw. ergeben sich Schwierigkeiten beim Zusammenführen der Kupplung mit den entsprechenden Stutzen und ist es nahezu unmöglich diese Kupplung bei den in der Wasserzuführung einer Geschirrspülmaschine herrschenden Wasserdrücken ohne Flüssigkeitsaustritt an den Kupplungsstellen zu betreiben. Dieser Flüssigkeitsaustritt an der Kupplung führt zwar in einem geschlossenen Spülbehälter nicht zu Flüssigkeitsverlusten, führt aber zu Druckverlusten in der Wasserzuführung zu dem mittels der Zuführung mit Kupplung verbundenen Sprüharm, was zu Verschlechterungen des Reinigungsergebnisses führt.From DE-OS 23 55 271 a dishwasher of the type mentioned is known where the coupling when inserting the crockery basket due to the conical Design of the two openings, the connecting piece and the blind piece is found and in which the two openings only because of the attachment of the attached to the crockery basket Feed pipe on the feed line and the conical shape of the two Openings, the connection piece and the blind piece are sealed, due to the after loading different bending of the crockery basket and thus different Position of the feed pipe, manufacturing tolerances of the crockery basket and its guides, Surface irregularities etc. result in difficulties when merging the coupling with the appropriate connector and it is almost impossible this coupling at the water pressures in the water supply to a dishwasher to operate without fluid leakage at the coupling points. This fluid leak on the coupling does not lead to loss of fluid in a closed rinsing container, but leads to pressure losses in the water supply to that by means of the supply Coupling connected spray arm, which worsens the cleaning result leads.

Der Erfindung liegt daher die Aufgabe zugrunde, auf einfache Art und Weise eine Geschirrspülmaschine der eingangs genannten Art zu schaffen, bei der unabhängig von der Beladung des Geschirrkorbes ein gesichertes Zusammenführen der Kupplung mit den Stutzen möglich ist und bei der Druckverluste in der Wasserzuführung zu dem mittels der Zuführung mit Kupplung verbundenen Sprüharm und dadurch entstehende Verschlechterungen des Reinigungsergebnisses wirkungsvoll vermieden werden. The invention is therefore based on the object of a dishwasher in a simple manner of the type mentioned at the outset, regardless of the load the crockery basket a secure merging of the coupling with the nozzle is possible and with the pressure losses in the water supply to that by means of the supply spray arm connected with coupling and resulting deterioration of the Cleaning results can be effectively avoided.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Kupplung an ihrem zu der Zuführungsleitung gerichteten Ende eine Zentrierplatte und in Strömungsrichtung hinter dieser eine Dichtplatte mit flexiblen Dichtlippen aufweist, die zwischen einem Gehäuse der Kupplung und der Zentrierplatte frei beweglich ist.This object is achieved in that the coupling on its to the feed line directed end a centering plate and in the direction of flow behind this has a sealing plate with flexible sealing lips, between a housing of the coupling and the centering plate is freely movable.

Durch die in alle Richtungen beweglichen Dichtplatte werden Verschiebungen der Kupplung durch die entsprechend der unterschiedlichen Beladung des Geschirrkorbes unterschiedlichen Lage der Kupplung beim Zusammenfahren der Kupplung mit den Stutzen des Zuführungsrohres ausgeglichen. Beim Auftreten von Wasserdruck in der Kupplung kommt es zu einem abdichtenden Anliegen der flexiblen Dichtlippen an dem Anschlußstutzen und an dem einragenden Blindstutzen sowie an der Zentrierplatte, womit Wasserverluste wirkungsvoll verhindert sind. Mit der erfindungsgemäßen Anordnung ist auf einfache Art und Weise eine Geschirrspülmaschine der eingangs genannten Art geschaffen, bei der unabhängig von der Beladung des Geschirrkorbes ein gesichertes Zusammenführen der Kupplung mit den Stutzen möglich ist und bei der Druckverluste in der Wasserzuführung zu dem mittels der Zuführung mit Kupplung verbundenen Sprüharm und dadurch entstehende Verschlechterungen des Reinigungsergebnisses wirkungsvoll vermieden werden.Due to the sealing plate that can be moved in all directions, the coupling is displaced due to the different according to the different loading of the crockery basket Position of the coupling when the coupling is moved together with the connecting piece of the feed pipe balanced. If water pressure occurs in the coupling, it happens a sealing concern of the flexible sealing lips on the connecting piece and on the protruding blind spigot and on the centering plate, making water loss effective are prevented. With the arrangement according to the invention is a simple Dishwasher of the type mentioned created, regardless of the Loading the crockery basket a secure merging of the clutch with the Nozzles are possible and the pressure drops in the water supply to the means of Supply of spray arm connected with coupling and resulting deterioration the cleaning result can be effectively avoided.

Nach einem bevorzugten Merkmal der Erfindung weisen die Öffnungen eine sich zum Inneren der Kupplung verengende, konische Form auf. Beim Auftreten von Wasserdruck in der Kupplung kommt es zu einem abdichtenden Anliegen der Konusse an den einragenden Stutzen, womit eine Verbesserung der Abdichtung erreicht wird.According to a preferred feature of the invention, the openings face one towards the inside conical shape of the coupling. When water pressure occurs in the Coupling there is a sealing concern of the cones on the protruding Nozzle, with which an improvement of the sealing is achieved.

Nach einer bevorzugten Ausführungsform der Erfindung ist in die Dichtplatte eine flexible Platte mit Dichtlippen eingesetzt, womit eine einfache Fertigung ermöglicht ist.According to a preferred embodiment of the invention, a flexible is in the sealing plate Plate with sealing lips used, which enables easy manufacture.

Zweckmäßigerweise ist die flexible Platte aus Gummi hergestellt, was eine weitere Erleichterung der Fertigung bedeutet.The flexible plate is expediently made of rubber, which is a further relief the manufacturing means.

Nach einer vorteilhaften Ausführungsform der Erfindung sind an der Dichtplatte flexible Dichtlippen angeformt, alternativ hat nach einer weiteren vorteilhaften Ausführungsform der Erfindung die Dichtplatte einen Überzug aus flexiblem Material, das flexible Dichtlippen aufweist. Beide Ausführungsformen zeigen weitere Möglichkeiten mittels einer einfachen Fertigung die Dichtfunktion der Dichtplatte zu erzeugen.According to an advantageous embodiment of the invention are flexible on the sealing plate Molded sealing lips, alternatively has the according to a further advantageous embodiment Invention, the sealing plate a coating of flexible material that has flexible sealing lips. Both embodiments show further possibilities by means of simple manufacture to generate the sealing function of the sealing plate.

Nach einer bevorzugten Ausführungsform der Erfindung weisen die Blindstutzen kegelförmige Spitzen auf, die vor das freie Ende des Anschlußstutzens vorstehen, womit eine zusätzliche Führung zum leichteren Einfahren der Stutzen in die Kupplung geschaffen ist. According to a preferred embodiment of the invention, the blind connectors have a conical shape Tips that protrude in front of the free end of the connecting piece, with which an additional Guide for easier insertion of the nozzle into the coupling is created.

Bevorzugt ist die Zentrierplatte in dem Gehäuse der Kupplung mittels Schnappverbindungen befestigt, womit eine einfache Montage der Vorrichtung erreicht wird.The centering plate is preferably in the housing of the coupling by means of snap connections attached, whereby a simple assembly of the device is achieved.

Zweckmäßigerweise sind auf einem umlaufenden Rand der Zentrierplatte Rastnoppen angeordnet, die in Rastöffnungen des Gehäuses einfallen, was eine weitere Vereinfachung der Herstellung und Montage bedeutet.Expediently, locking knobs are arranged on a peripheral edge of the centering plate, which fall into locking openings of the housing, which further simplifies the Manufacturing and assembly means.

In besonders vorteilhafter Weise ist die Zentrierplatte gegen das Gehäuse der Kupplung mittels einer labyrinthartigen Dichtungsanordnung abgedichtet, womit eine weitere Ursache für eventuellen Wasserverlust vermieden ist.In a particularly advantageous manner, the centering plate is against the housing of the clutch sealed by means of a labyrinth-like sealing arrangement, which is another cause for possible water loss is avoided.

Zweckmäßigerweise wird die labyrinthartige Dichtungsanordnung durch den umlaufenden Rand der Zentrierplatte und eine innerhalb des umlaufenden Randes der Zentrierplatte umlaufend angeordnete Dichtkante des Gehäuses der Kupplung gebildet, wodurch eine einfache Herstellung gewährleistet wird.The labyrinth-like sealing arrangement is expediently replaced by the circumferential one Edge of the centering plate and one encircling within the circumferential edge of the centering plate arranged sealing edge of the housing of the coupling is formed, which makes a simple Manufacturing is guaranteed.

Vorteilhafterweise ist ein Gehäuse der Kupplung einstückig mit dem Zulaufrohr hergestellt, was eine weitere Vereinfachung der erfindungsgemäßen Vorrichtung bedeutet.A housing of the coupling is advantageously produced in one piece with the inlet pipe, which means a further simplification of the device according to the invention.

Zweckmäßigerweise weist das Gehäuse der Kupplung Aufnahmen und Gegenhalter für Längsdrähte des Geschirrkorbes auf, womit eine einfache Montage der erfindungsgemäßen Vorrichtung erzielt wird.The housing of the coupling expediently has receptacles and counterholders for Longitudinal wires of the crockery basket, making the inventive assembly easy to assemble Device is achieved.

Die Erfindung wird nachstehend anhand dem in der Zeichnung dargestellten Ausführungsbeispiel erläutert. Es zeigen

Fig. 1
einen Schnitt durch eine Seitenansicht einer erfindungsgemäßen Geschirrspülmaschine.
Fig. 2
eine vergrößerte Darstellung der Einzelheit II in Fig. 1 und
Fig. 3
eine vergrößerte Darstellung der Einzelheit III in Fig. 1.
The invention is explained below with reference to the embodiment shown in the drawing. Show it
Fig. 1
a section through a side view of a dishwasher according to the invention.
Fig. 2
an enlarged view of the detail II in Fig. 1 and
Fig. 3
an enlarged view of the detail III in Fig. 1st

Eine erfindungsgemäße, nicht näher erläuterte Geschirrspülmaschine weist im gezeigten Ausführungsbeispiel einen nicht dargestellten, in der Höhe verstellbaren Geschirrkorb auf, an dem ein zugeordneter Sprüharm 8 und dessen Zulaufrohr 10 befestigt ist. Der Sprüharm 8 ist mittels einer nicht näher erläuterten Lagerung 9 an dem horizontal angeordneten Zulaufrohr 10 gelagert. Erfindungsgemäß ist das Zulaufrohr 10 mittels einer Kupplung 11 mit einer an einer Seitenwand eines Spülbehälters, im gezeigten Ausführungsbeispiel an der Rückwand 1 des Spülbehälters befestigten Zuführungsleitung 2 verbunden. Die Zuführungsleitung 2 weist einen in Richtung zum Zulaufrohr 10 vorstehenden, offenen Anschlußstutzen 3 und zwei in Richtung zum Zulaufrohr 10 vorstehende, geschlossene Blindstutzen 4, 5 auf. Die Blindstutzen 4, 5 weisen kegelförmige Spitzen 6, 7 auf, die vor das freie Ende des Anschlußstutzens 3 vorstehen.A dishwasher according to the invention, not explained in more detail, has in the shown Embodiment a, not shown, in height adjustable crockery basket on which is assigned an associated spray arm 8 and its inlet pipe 10. The spray arm 8 is by means of a bearing 9 not explained in more detail on the horizontally arranged inlet pipe 10 stored. According to the invention, the inlet pipe 10 is connected to a by means of a coupling 11 on a side wall of a rinsing container, in the exemplary embodiment shown on the rear wall 1 of the rinsing tank attached supply line 2 connected. The feed line 2 has an open connecting piece 3 and projecting in the direction of the inlet pipe 10 two closed blind stubs 4, 5 projecting in the direction of the inlet pipe 10. The Blind sockets 4, 5 have conical tips 6, 7, which are in front of the free end of the connecting piece 3 project.

Die Kupplung 11 des Zulaufrohres 10 weist ein im Ausführungsbeispiel mit dem Zulaufrohr 10 einstückig hergestelltes Gehäuse 12 auf, in das eine Zentrierplatte 15 als vorderer Abschluß der Kupplung 11 in Einsatzstellung senkrecht, im wesentlichen parallel zu der Zuführungsleitung 2 über Rastverbindungen eingeschnappt ist. Diese Rastverbindungen werden durch an einem umlaufenden Rand 18 der Zentrierplatte 15 angeordnete Rastnoppen 19 gebildet, die bei der Montage in Rastöffnungen 14 des Gehäuses 12 einfallen. Die Zentrierplatte 15 ist gegen das Gehäuse 12 der Kupplung 11 mittels einer labyrinthartigen Dichtungsanordnung abgedichtet, die durch den umlaufenden Rand 18 der Zentrierplatte 15 und eine innerhalb des umlaufenden Randes 18 der Zentrierplatte 15 umlaufend angeordnete Dichtkante 13 des Gehäuses 12 der Kupplung 11 gebildet wird.The coupling 11 of the inlet pipe 10 has an inlet pipe in the exemplary embodiment 10 one-piece housing 12, in which a centering plate 15 as a front end the coupling 11 in the vertical position, essentially parallel to the feed line 2 is snapped in via snap connections. These rest connections will be by means of locking knobs 19 arranged on a peripheral edge 18 of the centering plate 15 formed, which occur during assembly in locking openings 14 of the housing 12. The centering plate 15 is against the housing 12 of the coupling 11 by means of a labyrinth-like sealing arrangement sealed by the peripheral edge 18 of the centering plate 15 and one circumferentially arranged within the peripheral edge 18 of the centering plate 15 Sealing edge 13 of the housing 12 of the coupling 11 is formed.

Erfindungsgemäß weist die Kupplung 11 an ihrem zu der Zuführungsleitung 2 gerichteten Ende in Strömungsrichtung hinter der Zentrierplatte 15 eine Dichtplatte 20 mit flexiblen Dichtlippen 28, 29 auf , die im gezeigten Ausführungsbeispiel als Dichtplatte 20 mit einer eingesetzten flexiblen Platte 25 ausgeführt ist und die zwischen dem Gehäuse 12 der Kupplung 11 und der Zentrierplatte 15 frei beweglich ist. Die flexible Platte 25 ist im gezeigten Ausführungsbeispiel aus Gummi hergestellt. Die Dichtplatte 20 umschließt mit einem vorgezogenen äußeren Rand 23 den Umfang der flexiblen Platte 25 umlaufend. Benachbart zu dem umlaufenden Rand 23 der Dichtplatte 20 weist die flexible Platte 25 die umlaufende Dichtlippe 28 auf, die an der Zentrierplatte 15 anliegt. Die Kupplung 11 weist in den erwähnten Platten 15, 20 und 25 jeweils zwei Öffnungen 16 und 17, 21 und 22, 26 und 27 auf, in die jeweils der Anschlußstutzen 3 und einer der Blindstutzen 4, 5 der Zuführleitung 2, in der in Figur 1 gezeigten Stellung des Ausführungsbeispieles der obere Blindstutzen 4 einragt, wobei die zwei Öffnungen 26, 27 in der flexiblen Platte 25 eine sich zum Inneren der Kupplung 11 verengende, konische Form aufweisen, wie am besten in Fig. 2 zu sehen ist. Diese Öffnungen 26, 27 sind jeweils von einem umlaufenden Rand 24 der Dichtplatte 20 umgeben. Benachbart dem Ende der Öffnungen 26, 27 weist die flexible Platte 25 die Öffnungen 26, 27 umlaufende Dichtlippen 29 auf, die an der Zentrierplatte 15 anliegen.According to the invention, the coupling 11 points towards the supply line 2 End in the flow direction behind the centering plate 15, a sealing plate 20 with flexible Sealing lips 28, 29, which in the exemplary embodiment shown as a sealing plate 20 with a inserted flexible plate 25 is executed and between the housing 12 of the coupling 11 and the centering plate 15 is freely movable. The flexible plate 25 is shown in FIG Embodiment made of rubber. The sealing plate 20 encloses with an advanced outer edge 23 surrounding the circumference of the flexible plate 25. Adjacent to the circumferential edge 23 of the sealing plate 20, the flexible plate 25 has the circumferential Sealing lip 28, which rests on the centering plate 15. The clutch 11 has in the mentioned Plates 15, 20 and 25 each have two openings 16 and 17, 21 and 22, 26 and 27 into which each of the connection piece 3 and one of the blind piece 4, 5 of the feed line 2, in the Figure 1 shown position of the embodiment protrudes the upper blind connector 4, wherein the two openings 26, 27 in the flexible plate 25 one to the inside of the coupling 11 have a narrowing, conical shape, as best seen in FIG. 2. These openings 26, 27 are each surrounded by a peripheral edge 24 of the sealing plate 20. The flexible plate 25 has the openings 26, 27 adjacent to the end of the openings 26, 27 circumferential sealing lips 29, which bear against the centering plate 15.

Das Gehäuse 12 weist weiterhin benachbart zu dem vorderen Ende an der Zentrierplatte 15 eine Aufnahme 30 mit einem im Ausführungsbeispiel als Federhaken ausgebildeten Gegenhalter 31 und am hinteren Ende benachbart zu der Lagerung 9 des Sprüharmes 8 eine weitere Aufnahme 32, die einstückig an dem Gehäuse 12 angeformt sind, zur Befestigung des Zuführrohres 10 an nicht gezeigten Längsdrähten des Geschirrkorbes auf.The housing 12 further has adjacent to the front end on the centering plate 15 a receptacle 30 with a counter-holder designed as a spring hook in the exemplary embodiment 31 and at the rear end adjacent to the bearing 9 of the spray arm 8 another Recording 32, which are integrally formed on the housing 12 for fastening the Feed pipe 10 on longitudinal wires, not shown, of the crockery basket.

Vor Inbetriebnahme der Geschirrspülmaschine wird nach Beladen des Geschirrkorbes mit zu reinigendem Spülgut dieser auf nicht gezeigten Führungen in den Spülbehälter eingeschoben. Dabei kommt zuerst einer der Blindstutzen 4, 5 mit seiner konischen Spitze 6, 7 in Berührung mit der entsprechenden Öffnung 26, 27 in der flexiblen Platte 25 der Dichtplatte 20, in der gezeigten Stellung des gezeigten Ausführungsbeispieles kommt der Blindstutzen 4 mit der Öffnung 26 in Berührung und hebt oder senkt dadurch die Dichtplatte 20 entsprechend der genauen Lage des Geschirrkorbes, bevor der Anschlußstutzen 3 in die entsprechende Öffnung 26, 27, im gezeigten Ausführungsbeispiel in die Öffnung 27, einfährt. Nach vollständigem Einfahren des Geschirrkorbes wird eine nicht gezeigte Tür geschlossen und der Betrieb der Geschirrspülmaschine kann begonnen werden.Before putting the dishwasher into operation, the dishwasher basket is loaded with cleaning items to be washed inserted into the rinsing container on guides not shown. First, one of the dummy connections 4, 5 comes into contact with its conical tip 6, 7 with the corresponding opening 26, 27 in the flexible plate 25 of the sealing plate 20, in the position shown of the embodiment shown, the dummy connector 4 comes with the opening 26 in contact and thereby raises or lowers the sealing plate 20 accordingly the exact position of the crockery basket before the connecting piece 3 in the corresponding Opening 26, 27, in the exemplary embodiment shown, enters opening 27. After complete Retracting the crockery basket closes a door, not shown, and the Operation of the dishwasher can be started.

Bei Betrieb der Geschirrspülmaschine, z.B. in der in Figur 1 gezeigten Höhenstellung des Geschirrkorbes, wird von einer nicht gezeigten Umwälzpumpe über die Zuführleitung 2 und über den Anschlußstutzen 3 von dem Sprüharm 8 zu versprühende Spülflüssigkeit in das Zulaufrohr 10 gefördert. Aufgrund des in der Kupplung 11 anstehenden Druckes wird die erfindungsgemäß zwischen Gehäuse 12 und Zentrierplatte 15 frei bewegliche Dichtplatte 20 mit der eingelegten flexible Platte 25 in Richtung auf die Zuführleitung 2 verschoben, wodurch die Dichtlippen 28, 29 der flexiblen Platte 25 an der Zentrierplatte 15 abdichtend anliegen. Die konischen Öffnungen 26, 27 der flexiblen Platte 25 werden durch den auftretenden Druck an dem Anschlußstutzen 3 (Fig. 2) und an dem in die Kupplung 11 einragenden, die nicht benötigte Öffnung 26 verschließenden Blindstutzen 4 abdichtend zur Anlage gebracht. Die labyrinthartige Dichtungsanordnung (Fig. 3) zwischen Gehäuse 12 und Zentrierplatte 15 verhindert am äußeren Umfang des Gehäuses 12 der Kupplung 11 einen Wasseraustritt.When operating the dishwasher, e.g. in the height position shown in Figure 1 Dish rack, is from a circulation pump, not shown, via the feed line 2 and About the connector 3 from the spray arm 8 spray liquid to be sprayed into the Inlet pipe 10 promoted. Due to the pressure present in the clutch 11, the pressure according to the invention between housing 12 and centering plate 15 freely movable sealing plate 20 with the inserted flexible plate 25 in the direction of the feed line 2, whereby the sealing lips 28, 29 of the flexible plate 25 bear against the centering plate 15 in a sealing manner. The conical openings 26, 27 of the flexible plate 25 are caused by the Pressure on the connecting piece 3 (Fig. 2) and on the protruding into the coupling 11, the unused opening 26 closing blind connector 4 sealingly brought to the plant. The labyrinth-like sealing arrangement (FIG. 3) between the housing 12 and the centering plate 15 prevents water leakage on the outer circumference of the housing 12 of the coupling 11.

Durch die freie Beweglichkeit der Dichtplatte 20 ist ein einfaches Zusammenfinden der Kupplung 11 mit den anzuschließenden Stutzen 3, 4, 5 erreicht. Durch das Abdichten zwischen Gehäuse 12 und Zentrierplatte 15, zwischen Zentrierplatte 15 und Dichtplatte 20, bzw. flexible Platte 25 und zwischen Stutzen 3, 4, 5 und Öffnungen 26, 27 sind Wasserverluste wirkungsvoll verhindert. Mit der erfindungsgemäßen Anordnung ist auf einfache Art und Weise eine Geschirrspülmaschine der eingangs genannten Art geschaffen, bei der unabhängig von der Beladung des Geschirrkorbes ein gesichertes Zusammenführen der Kupplung 11 mit den Stutzen 3, 4, 5 möglich ist und bei der Druckverluste in der Wasserzuführung zu dem mittels dem Zuführungrohr 10 mit Kupplung 11 von der Zuführungsleitung 2 verbundenen Sprüharm 8 und dadurch entstehende Verschlechterungen des Reinigungsergebnisses wirkungsvoll vermieden werden.The free movement of the sealing plate 20 makes it easy to find the Coupling 11 with the connecting pieces 3, 4, 5 to be reached. By sealing between Housing 12 and centering plate 15, between centering plate 15 and sealing plate 20, or flexible plate 25 and between nozzle 3, 4, 5 and openings 26, 27 are water losses effectively prevented. With the arrangement according to the invention is simple and Way created a dishwasher of the type mentioned, in which independently from the loading of the crockery basket a secure merging of the coupling 11 with the nozzle 3, 4, 5 is possible and in the pressure loss in the water supply to that by means of the feed pipe 10 with coupling 11 from the feed line 2 connected spray arm 8 and resulting deterioration in the cleaning result can be effectively avoided.

Claims (13)

  1. Dishwashing machine with at least one crockery basket, which is adjustable in height and at which an associated spray arm (8) and the feed pipe (10) thereof are fastened, wherein the feed pipe (10) is arranged horizontally and connected by means of a coupling (11) with a feed duct (2), which is fastened to a side wall (1) of a rinsing container, with an open connecting stub pipe (3) projecting in direction towards the feed pipe (10) and two closed blind stub pipes (4, 5) projecting in direction towards the feed pipe (10), wherein the coupling (11) has two openings (26, 27) into which the connecting stub pipe (3) and one of the blind stub pipes (4, 5) respectively protrude, characterised in that the coupling (11) has a centring plate (15) at its end oriented towards the feed duct (2) and a sealing plate (20) with flexible sealing lips (28, 29), which is freely movable between a housing (12) of the coupling (11) and the centring plate (15), behind the centring plate in flow direction.
  2. Dishwashing machine according to claim 1, characterised in that the openings (26, 27) have a conical shape narrowing towards the interior of the coupling (11).
  3. Dishwashing machine according to claim 1 or 2, characterised in that a flexible plate (25) with sealing lips (28, 29) is inserted in the sealing plate (20).
  4. Dishwashing machine according to claim 3, characterised in that the flexible plate (25) is made of rubber.
  5. Dishwashing machine according to claim 1 or 2, characterised in that flexible sealing lips are shaped on at the sealing plate.
  6. Dishwashing machine according to claim 1 or 2, characterised in that the sealing plate has a covering of flexible material, which has flexible sealing lips.
  7. Dishwashing machine according to one of claims 1 to 6, characterised in that the blind stub pipes (4, 5) have conical tips (6, 7), which project in front of the free end of the connecting stub pipe (3).
  8. Dishwashing machine according to one of claims 1 to 7, characterised in that the centring plate (15) is fastened in the housing (12) of the coupling (11) by means of snap connections.
  9. Dishwashing machine according to claim 8, characterised in that detent knobs (19), which drop into detent openings (14) of the housing (12), are arranged on an encircling edge (18) of the centring plate (15).
  10. Dishwashing machine according to one of claims 1 to 9, characterised in that the centring plate (15) is sealed relative to the housing (12) of the coupling (11) by means of a labyrinth-like sealing arrangement.
  11. Dishwashing machine according to claim 10, characterised in that the labyrinth-like sealing arrangement is formed by the encircling edge (18) of the centring plate (15) and a sealing edge (13), which is arranged to extend around within the encircling edge (18) of the centring plate (15), of the housing (12) of the coupling (11).
  12. Dishwashing machine according to one of claims 1 to 11, characterised in that the housing (12) of the coupling is produced integrally with the feed pipe (10).
  13. Dishwashing machine according to one of claims 1 to 11, characterised in that the housing (12) of the coupling has receptacles (30, 32) and counterholders (31) for the longitudinal wires of the crockery basket.
EP97101983A 1996-03-20 1997-02-07 Dishwasher Expired - Lifetime EP0796587B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19611054 1996-03-20
DE19611054A DE19611054A1 (en) 1996-03-20 1996-03-20 dishwasher

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EP0796587A2 EP0796587A2 (en) 1997-09-24
EP0796587A3 EP0796587A3 (en) 1998-03-25
EP0796587B1 true EP0796587B1 (en) 1999-05-19

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US (1) US5823211A (en)
EP (1) EP0796587B1 (en)
DE (2) DE19611054A1 (en)
ES (1) ES2134657T3 (en)
TR (1) TR199700215A2 (en)

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US8778094B2 (en) 2011-05-11 2014-07-15 Whirlpool Corporation Dishwasher with multi-feed washing system
US8801863B2 (en) 2011-05-11 2014-08-12 Whirlpool Corporation Dishwasher with rack corner spray system
US9034114B2 (en) 2012-09-14 2015-05-19 Whirlpool Corporation Dishwasher with booster agent dispersal system

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US8778094B2 (en) 2011-05-11 2014-07-15 Whirlpool Corporation Dishwasher with multi-feed washing system
US8801863B2 (en) 2011-05-11 2014-08-12 Whirlpool Corporation Dishwasher with rack corner spray system
US9034114B2 (en) 2012-09-14 2015-05-19 Whirlpool Corporation Dishwasher with booster agent dispersal system

Also Published As

Publication number Publication date
EP0796587A2 (en) 1997-09-24
TR199700215A2 (en) 1997-10-21
ES2134657T3 (en) 1999-10-01
US5823211A (en) 1998-10-20
DE59700162D1 (en) 1999-06-24
DE19611054A1 (en) 1997-09-25
EP0796587A3 (en) 1998-03-25

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