EP1586264B1 - Dishwasher with a tub and a least one sprayarm arranged within the tub - Google Patents

Dishwasher with a tub and a least one sprayarm arranged within the tub Download PDF

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Publication number
EP1586264B1
EP1586264B1 EP05006974A EP05006974A EP1586264B1 EP 1586264 B1 EP1586264 B1 EP 1586264B1 EP 05006974 A EP05006974 A EP 05006974A EP 05006974 A EP05006974 A EP 05006974A EP 1586264 B1 EP1586264 B1 EP 1586264B1
Authority
EP
European Patent Office
Prior art keywords
spray
spray arm
arm
dishwasher
tub
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.)
Not-in-force
Application number
EP05006974A
Other languages
German (de)
French (fr)
Other versions
EP1586264A3 (en
EP1586264A2 (en
Inventor
Kai Buller
Günther Dr. Ennen
Seyfettin Kara
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL05006974T priority Critical patent/PL1586264T3/en
Publication of EP1586264A2 publication Critical patent/EP1586264A2/en
Publication of EP1586264A3 publication Critical patent/EP1586264A3/en
Application granted granted Critical
Publication of EP1586264B1 publication Critical patent/EP1586264B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/14—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
    • 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
    • A47L15/4278—Nozzles
    • A47L15/4282—Arrangements to change or modify spray pattern or direction

Definitions

  • the invention relates to a dishwasher according to the preamble of claim 1.
  • Such a dishwasher is from the US 1,997,450 known.
  • spray arms are known from the prior art, which are designed such that they take into account in particular problem areas in the washing.
  • a dishwashing machine for a dishwasher which has a spray arm, which has Eckspritzdüsen, which are fed separately and are applied only in defined rotational positions of the washing or rinsing arm with rinsing liquid.
  • Eckspritzdüsen which are fed separately and are applied only in defined rotational positions of the washing or rinsing arm with rinsing liquid.
  • the spray arm on a subdivided chamber system, wherein the main spray nozzles are supplied with rinsing liquid via the one chamber, and wherein the other chamber supplies the Ecksprühdüsen with rinsing liquid.
  • the separate supply takes place here via separate outlet openings in the hub region of the mounted spray arm, wherein in defined rotational positions of the spray arm, the second chamber is in flow communication with the feed of Ecksprühdüsen.
  • the EP 1 040 786 A1 and the EP 1 040 787 A1 show dishwashers with spray arms, in which separate chambers with nozzle groups can be hydraulically controlled via a central spring element.
  • the invention addresses the problem of improving the efficiency of provided on a spray arm spray nozzles, in particular, the spray jets should give a higher coverage of the washing compartment.
  • the advantages achievable with the invention are that the utilization of the pressure in the spray arm (eg influenced by the change in the circulation pump speed) and the associated geometry change requires no additional actuators, which is achieved in particular by providing elastic means in the region of the spray arm which occupy different positions due to the variable pump pressure for the activation or deactivation of arranged on the spray arm spray nozzles.
  • This design also ensures that, as a result of the changed pump pressure, a so-called pulsating spraying of the dishes takes place, which leads to a more effective cleaning.
  • the elastic means are designed as spring elements which cause an immediate closure or opening of the nozzle opening.
  • the spring element is designed as an elastic molded part, which releases the opening cross section of the nozzle as a result of the pressure increase, whereby the other way round, as a result of the pressure reduction, an automatic closure caused by the elastic molded part again.
  • the elastic molded part consists of a lip-like ring element, which leads to closure of the nozzle opening as a result of its elastic recovery in pressure drop.
  • the subject invention relates to a dishwasher, which is not shown in detail in which a rinsing container is provided, in which at least one spray arm 1 is arranged, which is rotatably mounted in the spray chamber about a vertical axis 2, wherein the spray arm 1 with spray nozzles is fitted, which are fed via a circulation pump also not shown with rinsing liquid.
  • a circulation pump also not shown with rinsing liquid.
  • elastic means are provided which, due to the variable pump pressure, occupy a first closed position and a second open position, in order to either activate or deactivate the spray nozzles 3 provided on the spray arm 1.
  • the elastic means can thus be provided for controlling additional nozzles 3 provided on the spray arm 1.
  • the elastic means are designed as spring elements which cause an immediate closure or opening of the nozzle opening.
  • FIG. 1 shows a spring element, which is formed as an elastic molding.
  • a lip-like ring element 7 is provided in the region of the nozzle opening 3, which opens at elevated pressure, FIG. 1b , and at self-closing pressure closes automatically, as in the FIG. 1a is shown.

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  • Washing And Drying Of Tableware (AREA)
  • Food-Manufacturing Devices (AREA)
  • Detergent Compositions (AREA)

Abstract

A dishwasher comprises a rinse container having an arm (1) that can rotate about a vertical axis and has rinsing nozzles (3) fed by a rotary pump. There is an elastic piece (4) that responds to differing pump pressures to activate or deactivate the spray nozzles. An independent claim is also included for an operating process for the above.

Description

Die Erfindung betrifft eine Geschirrspülmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a dishwasher according to the preamble of claim 1.

Eine solche Geschirrspülmaschine ist aus der US 1,997,450 bekannt.Such a dishwasher is from the US 1,997,450 known.

Aus dem Stand der Technik sind insbesondere Sprüharme bekannt, die derart ausgelegt sind, dass sie insbesondere Problemzonen im Spülbehälter berücksichtigen. So ist beispielsweise aus der EP 0 974 302 eine Spülvorrichtung für eine Geschirrspülmaschine bekannt, die einen Sprüharm aufweist, der über Eckspritzdüsen verfügt, die gesondert gespeist werden und nur in definierten Drehpositionen des Wasch- oder Spülarmes mit Spülflüssigkeit beaufschlagt werden. Auf diese Weise soll gewährleistet werden, dass insbesondere die in den Eckbereichen vorhandenen Problemzonen hinreichend mit Spülflüssigkeit beaufschlagt werden, um auf diese Weise eine effektive Reinigung von Geschirr, wie beispielsweise Töpfen, in den Eckbereichen zu erzielen. Hierzu weist der Sprüharm ein unterteiltes Kammersystem auf, wobei über die eine Kammer die Hauptsprühdüsen mit Spülflüssigkeit versorgt werden, und wobei die andere Kammer die Ecksprühdüsen mit Spülflüssigkeit versorgt. Die getrennte Versorgung erfolgt hierbei über getrennte Austrittsöffnungen im Nabenbereich des gelagerten Sprüharmes, wobei in definierten Drehpositionen des Sprüharmes die zweite Kammer in Strömungsverbindung zur Speisung der Ecksprühdüsen steht.In particular spray arms are known from the prior art, which are designed such that they take into account in particular problem areas in the washing. For example, from the EP 0 974 302 a dishwashing machine for a dishwasher, which has a spray arm, which has Eckspritzdüsen, which are fed separately and are applied only in defined rotational positions of the washing or rinsing arm with rinsing liquid. In this way, it is to be ensured that, in particular, the problem zones present in the corner areas are sufficiently supplied with rinsing liquid in order in this way to achieve effective cleaning of dishes, such as pots, in the corner areas. For this purpose, the spray arm on a subdivided chamber system, wherein the main spray nozzles are supplied with rinsing liquid via the one chamber, and wherein the other chamber supplies the Ecksprühdüsen with rinsing liquid. The separate supply takes place here via separate outlet openings in the hub region of the mounted spray arm, wherein in defined rotational positions of the spray arm, the second chamber is in flow communication with the feed of Ecksprühdüsen.

Eine andere Lösung, um die Eckbereiche einer Spülkammer einer Geschirrspülmaschine mit Spülflüssigkeit zu versorgen, ist aus dem deutschen Gebrauchsmuster 297 18 777 bekannt. Dort wird beschrieben, dass ein Hauptspülarm sowie ein Hilfsspülarm, der drehbar am Hauptspülarm befestigt ist, an der Wand der Geschirrspülmaschine entlang streicht und unter dem Einfluss der Zentrifugalkraft durch die Eckbereiche geführt wird. Allerdings ist bei dieser vorgeschlagenen Lösung der Gesamtwasserverbrauch sehr hoch, weil der Hilfsdüsenarm je nach Geometrie der Geschirrspülmaschine eng an der Innenwand entlang streicht und somit eine große Menge an Spülflüssigkeit in einen Bereich abgegeben wird, in dem diese nicht genutzt werden kann. Als nachteilig bei der erstgenannten Ausführungsform des Standes der Technik wird es angesehen, dass diese aufwendig aufgebaut ist, wobei bestimmte Bereiche des Geschirrs nicht ausreichend mit Sprühstrahlen beaufschlagt werden. Zu dem ist eine Veränderung der Sprühstrahlen derzeit nur sehr begrenzt über den Volumenstrom möglich.Another solution to supply the corner areas of a washing chamber of a dishwasher with rinsing liquid is from the German utility model 297 18 777 known. There, it is described that a main rinsing arm and an auxiliary rinsing arm rotatably mounted on the main rinsing arm pass along the wall of the dishwasher and are guided by the corner portions under the influence of centrifugal force. However, in this proposed solution, the total water consumption is very high, because the Hilfsdüsenarm depending on the geometry of the dishwasher closely along the inner wall along sweeps and thus a large amount of flushing liquid is discharged into an area where it can not be used. A disadvantage of the first-mentioned embodiment of the prior art, it is considered that this is constructed consuming, with certain areas of the dishes are not sufficiently applied with spray jets. For a change in the spray is currently possible only very limited on the flow rate.

Die EP 1 040 786 A1 und die EP 1 040 787 A1 zeigen Geschirrspülmaschinen mit Sprüharmen, bei denen separate Kammern mit Düsengruppen über ein zentrales Federelement hydraulisch gesteuert werden können.The EP 1 040 786 A1 and the EP 1 040 787 A1 show dishwashers with spray arms, in which separate chambers with nozzle groups can be hydraulically controlled via a central spring element.

Der Erfindung stellt sich das Problem, die Effizienz von an einem Sprüharm vorgesehenen Sprühdüsen zu verbessern, wobei insbesondere die Sprühstrahlen eine höhere Abdeckung des Spülraumes geben sollen.The invention addresses the problem of improving the efficiency of provided on a spray arm spray nozzles, in particular, the spray jets should give a higher coverage of the washing compartment.

Erfindungsgemäß wird dieses Problem mit den Merkmalen des Patentanspruchs gelöst.According to the invention this problem is solved with the features of the claim.

Die mit der Erfindung erreichbaren Vorteile bestehen dadurch, dass die Ausnutzung des Druckes im Sprüharm (z.B. beeinflussbar durch die Veränderung der Umwälzpumpendrehzahl) und der damit einhergehenden Geometrieänderung keine zusätzlichen Aktoren benötigt, was insbesondere dadurch erreicht wird, dass im Bereich des Sprüharmes elastische Mittel vorgesehen sind, die infolge des veränderbaren Pumpendrucks unterschiedliche Stellungen zur Aktivierung bzw. Deaktivierung von an dem Sprüharm angeordneten Sprühdüsen einnehmen. Durch diese Ausbildung wird auch erreicht, dass infolge des veränderten Pumpendruckes ein sogenanntes pulsierendes Besprühen des Geschirrs erfolgt, was zu einer effektiveren Reinigung führt. Die elastischen Mittel sind dabei als Federelemente ausgebildet, die eine unmittelbare Schließung oder Öffnung der Düsenöffnung bewirken.The advantages achievable with the invention are that the utilization of the pressure in the spray arm (eg influenced by the change in the circulation pump speed) and the associated geometry change requires no additional actuators, which is achieved in particular by providing elastic means in the region of the spray arm which occupy different positions due to the variable pump pressure for the activation or deactivation of arranged on the spray arm spray nozzles. This design also ensures that, as a result of the changed pump pressure, a so-called pulsating spraying of the dishes takes place, which leads to a more effective cleaning. The elastic means are designed as spring elements which cause an immediate closure or opening of the nozzle opening.

Hierzu ist das Federelement als ein elastisches Formteil ausgebildet, welches infolge der Druckerhöhung den Öffnungsquerschnitt der Düse freigibt, wobei anders herum infolge der Druckabsenkung eine selbsttätige Schließung durch das elastische Formteil wieder hervorgerufen wird. Außerdem besteht das elastische Formteil aus einem lippenartigen Ringelement, welches in Folge seiner elastischen Rückverformung bei Druckabfall zur Schließung der Düsenöffnung führt. Durch Ausnutzung des variierenden Druckes können nun beim Sprüharm zusätzliche Sprühdüsen aktiviert werden, hierbei werden z.B. unterschiedliche Pumpendrehzahlen verwendet, um den Sprüharm selbst mit unterschiedlichen Drücken zu betreiben. Bei einer Standardpumpendrehzahl werden nicht alle Sprühdüsen mit Wasser versorgt. Bei einer erhöhten Drehzahl soll durch Ausnutzung des Druckes z.B. eine zusätzliche Sprühdüse hinzugeschaltet werden.For this purpose, the spring element is designed as an elastic molded part, which releases the opening cross section of the nozzle as a result of the pressure increase, whereby the other way round, as a result of the pressure reduction, an automatic closure caused by the elastic molded part again. In addition, the elastic molded part consists of a lip-like ring element, which leads to closure of the nozzle opening as a result of its elastic recovery in pressure drop. By utilizing the varying pressure, additional spray nozzles can now be activated in the spray arm; different pump speeds used to operate the spray arm itself with different pressures. At a standard pump speed, not all spray nozzles are supplied with water. At an increased speed, by utilizing the pressure, e.g. an additional spray nozzle can be added.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben; es zeigen:

  • Figur 1a, 1b ein elastisches Formteil in Zusammenwirkung mit einer Düsenöffnung;
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below; show it:
  • FIG. 1a, 1b an elastic molding in cooperation with a nozzle opening;

Der Erfindungsgegenstand betrifft eine Geschirrspülmaschine, die nicht näher im Einzelnen gezeigt wird, in der ein Spülbehälter vorgesehen ist, in den mindestens ein Sprüharm 1 angeordnet ist, der in dem Sprühraum um eine vertikale Achse 2 rotierend gelagert ist, wobei der Sprüharm 1 mit Sprühdüsen 3 bestückt ist, die über eine ebenfalls nicht näher dargestellte Umwälzpumpe mit Spülflüssigkeit gespeist werden. Der Darstellung der Figuren 1 ist es nun zu eigen, dass sie die geschlossene bzw. die offene Stellung einer Düse 3 zeigt.The subject invention relates to a dishwasher, which is not shown in detail in which a rinsing container is provided, in which at least one spray arm 1 is arranged, which is rotatably mounted in the spray chamber about a vertical axis 2, wherein the spray arm 1 with spray nozzles is fitted, which are fed via a circulation pump also not shown with rinsing liquid. The representation of the FIGS. 1 it is now her own that it shows the closed or the open position of a nozzle 3.

Im Bereich des Sprüharmes 1 sind elastische Mittel vorgesehen, die infolge des veränderbaren Pumpendrucks eine erste geschlossene, und eine zweite geöffnete Stellung, einnehmen, um auf diese Weise, die an dem Sprüharm 1 vorgesehenen Sprühdüsen 3 entweder zu aktivieren oder zu deaktivieren. Die elastischen Mittel können somit zur Ansteuerung von zusätzlichen am Sprüharm 1 vorgesehenen Düsen 3 vorgesehen sein. Dabei sind die elastischen Mittel als Federelemente ausgebildet, die eine unmittelbare Schließung oder Öffnung der Düsenöffnung bewirken.In the region of the spray arm 1, elastic means are provided which, due to the variable pump pressure, occupy a first closed position and a second open position, in order to either activate or deactivate the spray nozzles 3 provided on the spray arm 1. The elastic means can thus be provided for controlling additional nozzles 3 provided on the spray arm 1. The elastic means are designed as spring elements which cause an immediate closure or opening of the nozzle opening.

Die Figur 1 zeigt ein Federelement, das als ein elastisches Formteil ausgebildet ist. Dabei ist im Bereich der Düsenöffnung 3 ein lippenartiges Ringelement 7 vorgesehen, welches bei erhöhtem Druck sich öffnet, Figur 1b, und bei ablassendem Druck sich selbsttätig schließt, wie dies in der Figur 1a dargestellt ist.The FIG. 1 shows a spring element, which is formed as an elastic molding. In this case, a lip-like ring element 7 is provided in the region of the nozzle opening 3, which opens at elevated pressure, FIG. 1b , and at self-closing pressure closes automatically, as in the FIG. 1a is shown.

Claims (1)

  1. Dishwasher including a washing chamber in which is disposed at least one spray arm that is mounted in the washing chamber so as to rotate about an at least approximately vertical axis, wherein the spray arm is provided with spray nozzles that are supplied with washing liquid by means of a circulating pump, wherein in the region of the spray arm there are provided resilient elements that effect a direct closing or opening of the nozzle aperture and in this manner, on account of the modifiable pump pressure, assume different positions for activating or respectively de-activating spray nozzles (3) that are provided additionally on the spray arm (1), and wherein the resilient element is in the form of a resilient moulded part that exposes the cross-sectional aperture of the nozzle (3) on account of the pressure increase, characterized in that the resilient moulded part consists of a lip-shaped ring element (7).
EP05006974A 2004-04-15 2005-03-31 Dishwasher with a tub and a least one sprayarm arranged within the tub Not-in-force EP1586264B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05006974T PL1586264T3 (en) 2004-04-15 2005-03-31 Dishwasher with a tub and a least one sprayarm arranged within the tub

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004018878 2004-04-15
DE102004018878A DE102004018878B4 (en) 2004-04-15 2004-04-15 Dishwasher with a washing container in which at least one spray arm is arranged

Publications (3)

Publication Number Publication Date
EP1586264A2 EP1586264A2 (en) 2005-10-19
EP1586264A3 EP1586264A3 (en) 2008-07-23
EP1586264B1 true EP1586264B1 (en) 2009-03-18

Family

ID=34934604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05006974A Not-in-force EP1586264B1 (en) 2004-04-15 2005-03-31 Dishwasher with a tub and a least one sprayarm arranged within the tub

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EP (1) EP1586264B1 (en)
AT (1) ATE425695T1 (en)
DE (2) DE102004018878B4 (en)
PL (1) PL1586264T3 (en)

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DE102005013127B4 (en) * 2004-11-12 2007-08-23 Aweco Appliance Systems Gmbh & Co. Kg Spraying device for spraying a working fluid
WO2011154471A1 (en) * 2010-06-10 2011-12-15 Aktiebolaget Electrolux A dishwasher
DE102010032005A1 (en) 2010-07-22 2012-01-26 Michael Heidan Quadratic dishwasher, has large spray arm moved around rotational axis, and small spray arm whose movements stand independence of movements of large spray arm, where small spray arm covers entire area of base surface of dishwasher
DE102010032006A1 (en) 2010-07-22 2012-01-26 Michael Heidan Dishwasher has perpendicular rotating axis rotating around rotating spraying arm and for discharging water jets with pressure water
EP2454983B1 (en) 2010-11-15 2013-08-14 Electrolux Home Products Corporation N.V. Dishwasher with thermally adjusting spray nozzles
US9693672B2 (en) * 2011-09-22 2017-07-04 Whirlpool Corporation Dishwasher with sprayer
DE102012103445B4 (en) 2012-04-19 2018-10-31 Miele & Cie. Kg Dishwasher, in particular commercial dishwasher
US9713413B2 (en) 2013-07-01 2017-07-25 Whirlpool Corporation Dishwasher for treating dishes
WO2015018671A1 (en) * 2013-08-06 2015-02-12 Arcelik Anonim Sirketi A dishwasher with improved washing effectiveness
DE102014100002A1 (en) * 2014-01-02 2015-07-02 Miele & Cie. Kg dishwasher
US9962063B2 (en) 2014-03-13 2018-05-08 Whirlpool Corporation Dishwasher rack spray assembly
WO2015149859A1 (en) * 2014-04-03 2015-10-08 Electrolux Appliances Aktiebolag Wash arm arrangement
TR201618057A2 (en) * 2016-12-07 2018-06-21 Arcelik As A dishwasher
DE102019212952B4 (en) * 2019-08-28 2023-05-11 Blanco Gmbh + Co Kg Cleaning device and method for operating a cleaning device

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US1997450A (en) * 1933-03-17 1935-04-09 Richard Merrifield Spray projector for automatic dish washing and drying machine
US5944037A (en) * 1996-10-16 1999-08-31 Samsung Electronics Co., Ltd. Water spray apparatus for tableware washing machine
IT1289398B1 (en) * 1996-11-06 1998-10-02 Electrolux Zanussi Elettrodome DISHWASHER WITH PERFECTED SPRAYING VEHICLES
JP3651240B2 (en) * 1998-03-18 2005-05-25 松下電器産業株式会社 Dishwasher
DE19832982C2 (en) * 1998-07-22 2000-08-03 Premark Feg Llc Dishwashing device for a dishwasher
IT1311215B1 (en) * 1999-03-29 2002-03-04 Electrolux Zanussi Elettrodome DISHWASHER WITH PERFECTED SPRAYING VEHICLES
IT1311214B1 (en) * 1999-03-29 2002-03-04 Electrolux Zanussi Elettrodome DISHWASHER WITH BUTTON WATER JETS
DE10134917B4 (en) * 2001-07-18 2006-03-16 AEG Hausgeräte GmbH Dishwasher with variable liquid distribution

Also Published As

Publication number Publication date
DE502005006856D1 (en) 2009-04-30
EP1586264A3 (en) 2008-07-23
DE102004018878B4 (en) 2006-01-05
PL1586264T3 (en) 2009-06-30
ATE425695T1 (en) 2009-04-15
DE102004018878A1 (en) 2005-11-10
EP1586264A2 (en) 2005-10-19

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