EP0796587A2 - Dishwasher - Google Patents

Dishwasher Download PDF

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Publication number
EP0796587A2
EP0796587A2 EP97101983A EP97101983A EP0796587A2 EP 0796587 A2 EP0796587 A2 EP 0796587A2 EP 97101983 A EP97101983 A EP 97101983A EP 97101983 A EP97101983 A EP 97101983A EP 0796587 A2 EP0796587 A2 EP 0796587A2
Authority
EP
European Patent Office
Prior art keywords
coupling
plate
dishwasher according
sealing
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97101983A
Other languages
German (de)
French (fr)
Other versions
EP0796587B1 (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
Individual
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Filing date
Publication date
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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 height-adjustable crockery basket to which an associated spray arm and its feed pipe are fastened, the feed pipe being arranged horizontally and by means of a coupling with a feed line fastened to a side wall of a washing container and having an open projecting in the direction of the feed pipe Connection piece and two closed blind pipe projecting in the direction of the inlet pipe is connected, the coupling having two openings, into each of which the connection pipe and one of the blind pipe projects.
  • a dishwasher of the type mentioned in which the coupling when inserting the crockery basket is found due to the conical design of the two openings, the connecting piece and the blind connector and in which the two openings are only due to the system of the supply pipe attached to the crockery basket are sealed on the supply line and the conical design of the two openings, the connecting piece and the blind pipe, due to the different bending of the crockery basket depending on the load and thus the different position of the supply pipe, manufacturing tolerances of the crockery basket and its guides, surface irregularities, etc.
  • the invention is therefore based on the object to provide in a simple manner a dishwasher of the type mentioned, in which a secure merging of the coupling with the nozzle is possible regardless of the loading of the crockery basket and in the pressure loss in the water supply to the medium the spray arm connected to the coupling and the resulting deterioration in the cleaning result can be effectively avoided.
  • the coupling at its end facing the feed line has a centering plate and in the direction of flow behind it a sealing plate with flexible sealing lips, which is freely movable between a housing of the coupling and the centering plate.
  • a dishwasher of the type mentioned is created in a simple manner, in which a reliable merging of the coupling with the nozzle is possible regardless of the loading of the crockery basket and in the pressure losses in the water supply to the means of the supply with coupling connected spray arm and the resulting deterioration in the cleaning result can be effectively avoided.
  • the openings have a conical shape which narrows towards the interior of the coupling.
  • the cones are sealed against the protruding nozzle, which improves the seal.
  • a flexible plate with sealing lips is inserted into the sealing plate, making simple manufacture possible.
  • the flexible plate is expediently made of rubber, which means further ease of manufacture.
  • flexible sealing lips are formed on the sealing plate, alternatively, according to a further advantageous embodiment of the invention, the sealing plate has a coating of flexible material which has flexible sealing lips. Both embodiments show further possibilities of producing the sealing function of the sealing plate by means of simple manufacture.
  • the blind stubs have conical tips which protrude in front of the free end of the connecting stub, thus creating an additional guide for easier insertion of the stub into the coupling.
  • the centering plate is preferably fastened in the housing of the coupling by means of snap connections, with the result that the device can be easily installed.
  • locking knobs are arranged on a peripheral edge of the centering plate, which drop into locking openings in the housing, which means a further simplification of manufacture and assembly.
  • the centering plate is sealed off from the housing of the coupling by means of a labyrinth-like sealing arrangement, which avoids a further cause of possible water loss.
  • the labyrinth-like sealing arrangement is expediently formed by the circumferential edge of the centering plate and a sealing edge of the coupling housing arranged circumferentially within the circumferential edge of the centering plate, which ensures simple manufacture.
  • 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, with which a simple assembly of the device according to the invention is achieved.
  • a dishwasher according to the invention has a height-adjustable crockery basket, not shown, to which an associated spray arm 8 and its feed pipe 10 are fastened.
  • the spray arm 8 is mounted on the horizontally arranged inlet pipe 10 by means of a bearing 9, which is not explained in detail.
  • the inlet pipe 10 is by means of a coupling 11 with a on a side wall of a washing 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 connection piece 3 projecting in the direction of the inlet pipe 10 and two closed blind pieces 4, 5 projecting in the direction of the inlet pipe 10.
  • the blind stubs 4, 5 have conical tips 6, 7 which protrude in front of the free end of the connection stub 3.
  • the coupling 11 of the inlet pipe 10 has a housing 12, which in the exemplary embodiment is made in one piece with the inlet pipe 10, into which a centering plate 15 as the front end of the coupling 11 is snapped vertically, essentially parallel to the feed line 2, via snap-in connections.
  • These latching connections are formed by latching knobs 19 arranged on a peripheral edge 18 of the centering plate 15, which latches into latching openings 14 of the housing 12 during assembly.
  • the centering plate 15 is sealed against the housing 12 of the coupling 11 by means of a labyrinth-like sealing arrangement which is formed by the circumferential edge 18 of the centering plate 15 and a sealing edge 13 of the housing 12 of the coupling 11 arranged circumferentially within the circumferential edge 18 of the centering plate 15.
  • the coupling 11 at its end directed towards the supply line 2 in the flow direction behind the centering plate 15 has a sealing plate 20 with flexible sealing lips 28, 29, which in the exemplary embodiment shown is designed as a sealing plate 20 with an inserted flexible plate 25 and which is between the housing 12 of the coupling 11 and the centering plate 15 is freely movable.
  • the flexible plate 25 is made of rubber in the embodiment shown.
  • the sealing plate 20 surrounds the periphery of the flexible plate 25 all around with an extended outer edge 23. Adjacent to the circumferential edge 23 of the sealing plate 20, the flexible plate 25 has the circumferential sealing lip 28 which bears on the centering plate 15.
  • the coupling 11 has in the aforementioned plates 15, 20 and 25 two openings 16 and 17, 21 and 22, 26 and 27, in each of which the connection piece 3 and one of the blind pieces 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 have a conical shape narrowing towards the inside of the coupling 11, as can best be seen in FIG.
  • These openings 26, 27 are each surrounded by a peripheral edge 24 of the sealing plate 20.
  • Adjacent to the end of the openings 26, 27, the flexible plate 25 has sealing lips 29 which run around the openings 26, 27 and which bear against the centering plate 15.
  • the housing 12 also has, next to the front end on the centering plate 15, a receptacle 30 with a counter-holder 31 designed in the exemplary embodiment as a spring hook and at the rear end adjacent to the bearing 9 of the spray arm 8 another Receptacle 32, which are integrally formed on the housing 12, for fastening the feed tube 10 to longitudinal wires, not shown, of the crockery basket.
  • the dishwasher Before putting the dishwasher into operation, after loading the crockery basket with items to be cleaned, they are pushed into the rinsing container on guides (not shown). First, one of the dummy connections 4, 5 with its conical tip 6, 7 comes into contact with the corresponding opening 26, 27 in the flexible plate 25 of the sealing plate 20, in the position shown in the exemplary embodiment shown, the dummy connection 4 comes with the opening 26 in Touch and thereby raises or lowers the sealing plate 20 according to the exact position of the crockery basket before the connecting piece 3 moves into the corresponding opening 26, 27, in the embodiment shown in the opening 27. After the basket has been completely retracted, a door (not shown) is closed and the dishwasher can be operated.
  • 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 connected.
  • water losses are effectively prevented.
  • a dishwasher of the type mentioned at the outset is created in a simple manner, in which, regardless of the loading of the crockery basket, secure coupling of the coupling 11 with the connecting pieces 3, 4, 5 is possible and with the pressure losses in the water supply the spray arm 8 connected by means of the feed pipe 10 with the coupling 11 from the feed line 2 and the resulting deterioration in the cleaning result can be effectively avoided.

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  • Washing And Drying Of Tableware (AREA)

Abstract

The dishwasher has at least one height-adjustable basket with an attached spray arm and a horizontal delivery tube connected to a feed tube on the chamber wall with one open connector and two closed connectors facing the feed tube. The coupling has two openings, one to the open connector and the other to one closed connector. The coupling (11) has a centring plate (15) on its end facing the feed tube (2) and a sealing plate (20) downstream of this. The sealing plate has flexible sealing lips (28,29) freely movable between the coupling housing (12) and the centring plate.

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 height-adjustable crockery basket to which an associated spray arm and its feed pipe are fastened, the feed pipe being arranged horizontally and by means of a coupling with a feed line fastened to a side wall of a washing container and having an open projecting in the direction of the feed pipe Connection piece and two closed blind pipe projecting in the direction of the inlet pipe is connected, the coupling having two openings, into each of which the connection pipe and one of the blind pipe projects.

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, in which the coupling when inserting the crockery basket is found due to the conical design of the two openings, the connecting piece and the blind connector and in which the two openings are only due to the system of the supply pipe attached to the crockery basket are sealed on the supply line and the conical design of the two openings, the connecting piece and the blind pipe, due to the different bending of the crockery basket depending on the load and thus the different position of the supply pipe, manufacturing tolerances of the crockery basket and its guides, surface irregularities, etc. Difficulties arise in merging the coupling with the corresponding connecting piece and it is almost impossible for this coupling to be present at the water pressures prevailing in the water supply of a dishwasher without liquid escaping to the Ku to operate. This liquid leakage at the coupling does not lead to liquid losses in a closed rinsing container, but does lead to pressure losses in the water supply to the spray arm connected by means of the supply to the coupling, which leads to a deterioration in the cleaning result.

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 to provide in a simple manner a dishwasher of the type mentioned, in which a secure merging of the coupling with the nozzle is possible regardless of the loading of the crockery basket and in the pressure loss in the water supply to the medium the spray arm connected to the coupling and the resulting deterioration in the cleaning result 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 at its end facing the feed line has a centering plate and in the direction of flow behind it a sealing plate with flexible sealing lips, which is freely movable between a housing of the coupling and the centering plate.

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 movable in all directions, displacements of the coupling are compensated for by the different position of the coupling according to the different loading of the crockery basket when the coupling is moved together with the connecting piece of the feed pipe. When water pressure occurs in the coupling, there is a sealing contact of the flexible sealing lips on the connection piece and on the protruding blind piece and on the centering plate, with the result that water losses are effectively prevented. With the arrangement according to the invention, a dishwasher of the type mentioned is created in a simple manner, in which a reliable merging of the coupling with the nozzle is possible regardless of the loading of the crockery basket and in the pressure losses in the water supply to the means of the supply with coupling connected spray arm and the resulting deterioration in 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 have a conical shape which narrows towards the interior of the coupling. When water pressure occurs in the coupling, the cones are sealed against the protruding nozzle, which improves the seal.

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 plate with sealing lips is inserted into the sealing plate, making simple manufacture possible.

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

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, flexible sealing lips are formed on the sealing plate, alternatively, according to a further advantageous embodiment of the invention, the sealing plate has a coating of flexible material which has flexible sealing lips. Both embodiments show further possibilities of producing the sealing function of the sealing plate by means of simple manufacture.

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 stubs have conical tips which protrude in front of the free end of the connecting stub, thus creating an additional guide for easier insertion of the stub into the coupling.

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 fastened in the housing of the coupling by means of snap connections, with the result that the device can be easily installed.

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 drop into locking openings in the housing, which means a further simplification of manufacture and assembly.

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 sealed off from the housing of the coupling by means of a labyrinth-like sealing arrangement, which avoids a further cause of possible water loss.

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 formed by the circumferential edge of the centering plate and a sealing edge of the coupling housing arranged circumferentially within the circumferential edge of the centering plate, which ensures simple manufacture.

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, with which a simple assembly of the device according to the invention 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.In the exemplary embodiment shown, a dishwasher according to the invention, not explained in detail, has a height-adjustable crockery basket, not shown, to which an associated spray arm 8 and its feed pipe 10 are fastened. The spray arm 8 is mounted on the horizontally arranged inlet pipe 10 by means of a bearing 9, which is not explained in detail. According to the invention, the inlet pipe 10 is by means of a coupling 11 with a on a side wall of a washing 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 connection piece 3 projecting in the direction of the inlet pipe 10 and two closed blind pieces 4, 5 projecting in the direction of the inlet pipe 10. The blind stubs 4, 5 have conical tips 6, 7 which protrude in front of the free end of the connection stub 3.

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 a housing 12, which in the exemplary embodiment is made in one piece with the inlet pipe 10, into which a centering plate 15 as the front end of the coupling 11 is snapped vertically, essentially parallel to the feed line 2, via snap-in connections. These latching connections are formed by latching knobs 19 arranged on a peripheral edge 18 of the centering plate 15, which latches into latching openings 14 of the housing 12 during assembly. The centering plate 15 is sealed against the housing 12 of the coupling 11 by means of a labyrinth-like sealing arrangement which is formed by the circumferential edge 18 of the centering plate 15 and a sealing edge 13 of the housing 12 of the coupling 11 arranged circumferentially within the circumferential edge 18 of the centering plate 15.

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 at its end directed towards the supply line 2 in the flow direction behind the centering plate 15 has a sealing plate 20 with flexible sealing lips 28, 29, which in the exemplary embodiment shown is designed as a sealing plate 20 with an inserted flexible plate 25 and which is between the housing 12 of the coupling 11 and the centering plate 15 is freely movable. The flexible plate 25 is made of rubber in the embodiment shown. The sealing plate 20 surrounds the periphery of the flexible plate 25 all around with an extended outer edge 23. Adjacent to the circumferential edge 23 of the sealing plate 20, the flexible plate 25 has the circumferential sealing lip 28 which bears on the centering plate 15. The coupling 11 has in the aforementioned plates 15, 20 and 25 two openings 16 and 17, 21 and 22, 26 and 27, in each of which the connection piece 3 and one of the blind pieces 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 have a conical shape narrowing towards the inside of the coupling 11, as can best be seen in FIG. These openings 26, 27 are each surrounded by a peripheral edge 24 of the sealing plate 20. Adjacent to the end of the openings 26, 27, the flexible plate 25 has sealing lips 29 which run around the openings 26, 27 and 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 also has, next to the front end on the centering plate 15, a receptacle 30 with a counter-holder 31 designed in the exemplary embodiment as a spring hook and at the rear end adjacent to the bearing 9 of the spray arm 8 another Receptacle 32, which are integrally formed on the housing 12, for fastening the feed tube 10 to 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, after loading the crockery basket with items to be cleaned, they are pushed into the rinsing container on guides (not shown). First, one of the dummy connections 4, 5 with its conical tip 6, 7 comes into contact with the corresponding opening 26, 27 in the flexible plate 25 of the sealing plate 20, in the position shown in the exemplary embodiment shown, the dummy connection 4 comes with the opening 26 in Touch and thereby raises or lowers the sealing plate 20 according to the exact position of the crockery basket before the connecting piece 3 moves into the corresponding opening 26, 27, in the embodiment shown in the opening 27. After the basket has been completely retracted, a door (not shown) is closed and the dishwasher can be operated.

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 of the crockery basket shown in FIG. 1, rinsing liquid to be sprayed from the spray arm 8 is conveyed into the feed pipe 10 by a circulation pump (not shown) via the feed line 2 and the connecting piece 3. Due to the pressure present in the coupling 11, the sealing plate 20 according to the invention, which is freely movable between the housing 12 and the centering plate 15, with the inserted flexible plate 25 is displaced in the direction of the feed line 2, as a result of which the sealing lips 28, 29 of the flexible plate 25 seal against the centering plate 15 issue. The conical openings 26, 27 of the flexible plate 25 are brought into sealing contact by the pressure occurring at the connecting piece 3 (FIG. 2) and at the blind piece 4 which projects into the coupling 11 and closes the opening 26 which is not required. The labyrinth-like sealing arrangement (FIG. 3) between housing 12 and centering plate 15 prevents water from escaping on the outer circumference of housing 12 of 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 connected. By sealing between housing 12 and centering plate 15, between centering plate 15 and sealing plate 20, or flexible plate 25 and between connecting pieces 3, 4, 5 and openings 26, 27, water losses are effectively prevented. With the arrangement according to the invention, a dishwasher of the type mentioned at the outset is created in a simple manner, in which, regardless of the loading of the crockery basket, secure coupling of the coupling 11 with the connecting pieces 3, 4, 5 is possible and with the pressure losses in the water supply the spray arm 8 connected by means of the feed pipe 10 with the coupling 11 from the feed line 2 and the resulting deterioration in the cleaning result can be effectively avoided.

Claims (13)

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,
dadurch gekennzeichnet,
daß die Kupplung (11) an ihrem zu der Zuführungsleitung (2) gerichteten Ende eine Zentrierplatte (15) und in Strömungsrichtung hinter dieser eine Dichtplatte (20) mit flexiblen Dichtlippen (28, 29) aufweist, die zwischen einem Gehäuse (12) der Kupplung (11) und der Zentrierplatte (15) frei beweglich ist.Dishwasher with at least one height-adjustable crockery basket to which an associated spray arm and its feed pipe is fastened, the feed pipe being arranged horizontally and by means of a coupling with a feed line fastened to a side wall of a washing container with an open connecting piece projecting in the direction of the feed pipe and two closed is connected in the direction of the inlet pipe protruding blind connector, the coupling having two openings, into each of which the connection piece and one of the blind connector protrudes,
characterized,
that the coupling (11) has at its end directed to the feed line (2) a centering plate (15) and in the direction of flow behind it a sealing plate (20) with flexible sealing lips (28, 29) between a housing (12) of the coupling (11) and the centering plate (15) is freely movable. Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Öffnungen (26, 27) eine sich zum Inneren der Kupplung (11) verengende, konische Form aufweisen.Dishwasher according to claim 1, characterized in that the openings (26, 27) have a conical shape which narrows towards the interior of the coupling (11). Geschirrspülmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in die Dichtplatte (20) eine flexible Platte (25) mit Dichtlippen (28, 29) eingesetzt ist.Dishwasher according to claim 1 or 2, characterized in that a flexible plate (25) with sealing lips (28, 29) is inserted into the sealing plate (20). Geschirrspülmaschine nach Anspruch 3, dadurch gekennzeichnet, daß die flexible Platte (25) aus Gummi hergestellt ist.Dishwasher according to claim 3, characterized in that the flexible plate (25) is made of rubber. Geschirrspülmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß an der Dichtplatte flexible Dichtlippen angeformt sind.Dishwasher according to claim 1 or 2, characterized in that flexible sealing lips are formed on the sealing plate. Geschirrspülmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dichtplatte einen Überzug aus flexiblem Material hat, das flexible Dichtlippen aufweist.Dishwasher according to claim 1 or 2, characterized in that the sealing plate has a coating of flexible material which has flexible sealing lips. Geschirrspülmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Blindstutzen (4, 5) kegelförmige Spitzen (6, 7) aufweisen, die vor das freie Ende des Anschlußstutzens (3) vorstehen.Dishwasher according to one of claims 1 to 6, characterized in that the blind connections (4, 5) have conical tips (6, 7) which protrude in front of the free end of the connection connection (3). Geschirrspülmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Zentrierplatte (15) indem Gehäuse (12) der Kupplung (11) mittels Schnappverbindungen befestigt ist.Dishwasher according to one of claims 1 to 7, characterized in that the centering plate (15) is fastened in the housing (12) of the coupling (11) by means of snap connections. Geschirrspülmaschine nach Anspruch 8, dadurch gekennzeichnet, daß auf einem umlaufenden Rand (18) der Zentrierplatte (15) Rastnoppen (19) angeordnet sind, die in Rastöffnungen (14) des Gehäuses (12) einfallen.Dishwasher according to claim 8, characterized in that latching knobs (19) are arranged on a peripheral edge (18) of the centering plate (15) and engage in latching openings (14) of the housing (12). Geschirrspülmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Zentrierplatte (15) gegen das Gehäuse (12) der Kupplung (11) mittels einer labyrinthartigen Dichtungsanordnung abgedichtet ist.Dishwasher according to one of claims 1 to 9, characterized in that the centering plate (15) is sealed against the housing (12) of the coupling (11) by means of a labyrinth-like sealing arrangement. Geschirrspülmaschine nach Anspruch 10, dadurch gekennzeichnet, daß die labyrinthartige Dichtungsanordnung 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.Dishwasher according to claim 10, characterized in that the labyrinth-like sealing arrangement through the circumferential edge (18) of the centering plate (15) and within the circumferential edge (18) of the centering plate (15) circumferentially arranged sealing edge (13) of the housing (12) Coupling (11) is formed. Geschirrspülmaschine nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das Gehäuse (12) der Kupplung (11) einstückig mit dem Zulaufrohr (10) hergestellt ist.Dishwasher according to one of claims 1 to 11, characterized in that the housing (12) of the coupling (11) is made in one piece with the inlet pipe (10). Geschirrspülmaschine nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das Gehäuse (12) der Kupplung (11) Aufnahmen (30, 32) und Gegenhalter (31) für Längsdrähte des Geschirrkorbes aufweist.Dishwasher according to one of claims 1 to 11, characterized in that the housing (12) of the coupling (11) has receptacles (30, 32) and counterholders (31) for longitudinal wires of the crockery basket.
EP97101983A 1996-03-20 1997-02-07 Dishwasher Expired - Lifetime EP0796587B1 (en)

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DE19611054A DE19611054A1 (en) 1996-03-20 1996-03-20 dishwasher
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CN102458214B (en) * 2009-06-23 2014-09-10 伊莱克斯家用产品股份有限公司 Dishwasher, especially domestic dishwasher
AU2010265067B2 (en) * 2009-06-23 2016-06-16 Electrolux Home Products Corporation N.V. Dishwasher, especially domestic dishwasher
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US10349805B2 (en) 2011-05-11 2019-07-16 Whirlpool Corporation Dishwasher with rack corner spray system
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CN107137039A (en) * 2017-05-15 2017-09-08 珠海格力电器股份有限公司 Dish-washing machine
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Also Published As

Publication number Publication date
DE59700162D1 (en) 1999-06-24
ES2134657T3 (en) 1999-10-01
US5823211A (en) 1998-10-20
EP0796587B1 (en) 1999-05-19
DE19611054A1 (en) 1997-09-25
TR199700215A2 (en) 1997-10-21
EP0796587A3 (en) 1998-03-25

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