EP1382287B1 - Spraying device for an automatic dishwasher - Google Patents

Spraying device for an automatic dishwasher Download PDF

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Publication number
EP1382287B1
EP1382287B1 EP20030011161 EP03011161A EP1382287B1 EP 1382287 B1 EP1382287 B1 EP 1382287B1 EP 20030011161 EP20030011161 EP 20030011161 EP 03011161 A EP03011161 A EP 03011161A EP 1382287 B1 EP1382287 B1 EP 1382287B1
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EP
European Patent Office
Prior art keywords
spray head
spray
automatic dishwasher
guiding means
rotation
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
EP20030011161
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German (de)
French (fr)
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EP1382287A2 (en
EP1382287A3 (en
Inventor
Adrian Honegger
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.)
V-Zug AG
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V-Zug AG
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    • 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 spraying device according to the preamble of claim 1.
  • Rotary spray devices for automatic dishwashers are known in a variety of designs, see, for example US 5 655 556 A1 .
  • the German utility model DE 78 27 011 U1 describes, for example, a spray device with a spray arm, on which a plurality of button-like, rotatable spray heads are arranged.
  • the spray heads have fine spray holes for water passage and are rotated by the water pressure around their axes of rotation.
  • the object of the invention is to develop such a spraying device so that it is as easy to produce and still has a good spray effect and reliability. This object is achieved by the automatic dishwasher with at least one spray device according to claim 1.
  • a holding arm is provided on a suitable water guide, which acts on the spraying head on the vat side, whereby the "vat side” is to be understood as the side of the spray head facing the water guide, facing the interior of the vat.
  • the holding arm serves to hold the spray head against the water flow, or the pressure prevailing in her water pressure.
  • the holding arm is arranged so that it covers the spray opening (s) of the spray head during its rotation periodically at least partially, so that the water jet is interrupted. This leads to a pulsed water outlet, which improves the kinetic energy of the water jet and thus the cleaning effect.
  • the holding arm can prevent blockage of the spray head by the above crockery and cutlery parts wholly or at least partially and reduce the risk of clogging of the nozzle by dirt particles.
  • the holding arm thus assumes a mechanical function in the holder of the spray arm, but at the same time a hydraulic function in the periodic interruption of the water jet emerging from the spray opening
  • the water guide and the spray head form a radial guide, which prevents or restricts a radial relative movement of the two parts relative to the axis of rotation.
  • a nozzle is formed on the water guide.
  • the spray head is designed as a rotatably arranged on the neck cover.
  • the spray head can be arranged either stationary or on a rotatable spray arm in the tub.
  • FIG. 1 A preferred embodiment of an inventive dishwasher is in Fig. 1 shown.
  • the dishwasher has a housing 1, in which a tub 2 is arranged for receiving the items to be washed.
  • the tub 2 is closed by a door 3 and can accommodate a plurality of baskets 4a, 4b in a known manner.
  • a lower spray arm 5 is arranged on the bottom 6 of the tub 2 and an upper spray arm 7 on the upper rack 4a. Both spray arms 5, 7 are rotatable in a known manner.
  • a water guide 9 is further arranged with spray head 10.
  • the same type of spray heads 10 may also be provided on the spray arms 5, 7.
  • a preferred embodiment of the spray head 10 is in Fig. 2-6 shown.
  • the spray head 10 is formed by a lid-shaped rotary body 11, the present embodiment has four spray holes 12a, 12b, 13a, 13b for the water outlet ( Fig. 4 ).
  • the rotary body 11 is rotatably supported about a rotation axis 14. He sits in the manner of a lid on a pipe 15 of the water 9.
  • water guide 9 or nozzle 15
  • rotary body 11 engage each other so that they form a radial guide, which prevents movements of the rotary body 11 perpendicular to the axis of rotation 14.
  • a holding arm 16 is provided for axial fixation of the rotary body 11.
  • the holding arm 16 in the present embodiment has a bracket 17 which extends transversely across the rotary body 11 and is secured to a frame 18 at both ends.
  • the frame 18 surrounds the outside of the water guide 9 and is fastened in snap closure to two lugs 19 of the water guide 9.
  • an elevation 20 is provided on the rotary body 11 in the region of the axis of rotation 14 ( Fig. 3 ), which ensures a low-friction contact with the bracket 17.
  • water passes through the water guide 9 and the nozzle 15 in the rotary body 11 and pushes it outwards, so that it is acted upon by the bracket 17 and prevented from further deflection movement.
  • the pressurized water passes through the spray holes 12a, 12b, 13a, 13b and is sprayed into the tub.
  • the spray holes are designed such that the water exits with a tangential velocity component, so that a driving torque results and the rotary body 11 is set in motion about the rotation axis 14.
  • each of the spray openings 12a, 12b, 13a, 13b passes twice under the bracket 17 and is partially covered by it, so that the water jet is interrupted. This results in a pulsed irrigation with good cleaning effect.
  • each spray arm 5, 7 of the automatic dishwasher with one or more spray heads 10 according to Fig. 2-6 be provided (see. Fig. 1 ), in which case the spray arms form the respective water guide.
  • each spray arm 5, 7 is provided with a plurality of spray heads, each having different distances to the respective pivot axis of the spray arm, so that the water is distributed as widely as possible on the dishes.
  • the present dishwasher can be modified in many different ways.
  • an angled arm instead of a simple bracket 17, which is fastened with two ends to the frame 18, an angled arm may be provided which is arranged only on one side on the frame 18 or on the water guide 9.
  • a bracket with three or more angled arms wherein an outer end of each arm is attached to the frame 18 and the inner ends of the arms meet in the region of the axis of rotation 14.
  • the water jet from each spray opening 12a, 12b, 13a, 13b is interrupted only once or more than twice per rotation.
  • spray openings 12a, 12b, 13a, 13b instead of four spray openings 12a, 12b, 13a, 13b, another number of spray openings may be provided on the rotary body.
  • the Spray openings at least partially designed differently from each other, so that there is a better water distribution.
  • the spray openings are each arranged symmetrically about the axis of rotation 14 so that the radial bearing forces generated by the water deflection offset each other.

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  • Washing And Drying Of Tableware (AREA)

Description

Die Erfindung betrifft einen Geschirrspülautomaten mit mindestens einer Sprühvorrichtung gemäss Oberbegriff von Anspruch 1.The invention relates to a dishwasher with at least one spraying device according to the preamble of claim 1.

Drehbare Sprühvorrichtungen für Geschirrspülautomaten sind in einer Vielzahl von Ausführungen bekannt , siehe z.B. US 5 655 556 A1 . Das deutsche Gebrauchsmuster DE 78 27 011 U1 beschreibt z.B. eine Sprühvorrichtung mit einem Sprüharm, an welchem mehrere, knopfartige, drehbare Sprühköpfe angeordnet sind. Die Sprühköpfe besitzen feine Sprühöffnungen für den Wasserdurchtritt und werden durch den Wasserdruck um ihre Drehachsen gedreht.Rotary spray devices for automatic dishwashers are known in a variety of designs, see, for example US 5 655 556 A1 , The German utility model DE 78 27 011 U1 describes, for example, a spray device with a spray arm, on which a plurality of button-like, rotatable spray heads are arranged. The spray heads have fine spray holes for water passage and are rotated by the water pressure around their axes of rotation.

Aufgabe der Erfindung ist es, eine derartige Sprühvorrichtung so weiterzuentwickeln, dass sie möglichst einfach herstellbar ist und dennoch eine gute Sprühwirkung und Zuverlässigkeit besitzt. Diese Aufgabe wird durch den Geschirrspülautomaten mit mindestens einer Sprühvorrichtung gemäss Anspruch 1 erfüllt.The object of the invention is to develop such a spraying device so that it is as easy to produce and still has a good spray effect and reliability. This object is achieved by the automatic dishwasher with at least one spray device according to claim 1.

Erfindungsgemäss ist also an einer geeigneten Wasserführung ein Haltearm vorgesehen, welcher den Sprühkopf bottichseitig beaufschlagt, wobei unter "bottichseitig" die der Wasserführung gegenüberliegende, dem Innern des Bottichs zugewandte Seite des Sprühkopfs zu verstehen ist. Der Haltearm dient dazu, den Sprühkopf gegen die Wasserführung, bzw. den in ihr herrschenden Wasserdruck, zu halten. Dabei ist der Haltearm so angeordnet, dass er die Sprühöffnung(en) des Sprühkopfs bei dessen Drehung periodisch mindestens teilweise abdeckt, so dass der Wasserstrahl unterbrochen wird. Dies führt zu einem gepulsten Wasseraustritt, was die kinetische Energie des Wasserstrahls und somit die Reinigungswirkung verbessert. Ausserdem kann der Haltearm ein Blockieren des Sprühkopfes durch vorstehende Geschirr- und Besteckteile ganz oder zumindest teilweise verhindern und die Gefahr eines Verstopfes der Düsen durch Schmutzpartikel reduzieren.According to the invention, therefore, a holding arm is provided on a suitable water guide, which acts on the spraying head on the vat side, whereby the "vat side" is to be understood as the side of the spray head facing the water guide, facing the interior of the vat. The holding arm serves to hold the spray head against the water flow, or the pressure prevailing in her water pressure. In this case, the holding arm is arranged so that it covers the spray opening (s) of the spray head during its rotation periodically at least partially, so that the water jet is interrupted. This leads to a pulsed water outlet, which improves the kinetic energy of the water jet and thus the cleaning effect. In addition, the holding arm can prevent blockage of the spray head by the above crockery and cutlery parts wholly or at least partially and reduce the risk of clogging of the nozzle by dirt particles.

Somit übernimmt der Haltearm also eine mechanische Funktion bei der Halterung des Sprüharms, gleichzeitig aber auch eine hydraulische Funktion beim periodischen Unterbrechen des aus der Sprühöffnung austretenden WasserstrahlsThus, the holding arm thus assumes a mechanical function in the holder of the spray arm, but at the same time a hydraulic function in the periodic interruption of the water jet emerging from the spray opening

Die Wasserführung und der Sprühkopf bilden durch Ineinandergreifen eine Radialführung, welche eine im Bezug zur Drehachse radiale Relativbewegung der beiden Teile verhindert oder einschränkt. Hierzu ist an der Wasserführung ein Stutzen ausgebildet. Der Sprühkopf ist als ein drehbar am Stutzen angeordneter Deckel ausgestaltet.By intermeshing, the water guide and the spray head form a radial guide, which prevents or restricts a radial relative movement of the two parts relative to the axis of rotation. For this purpose, a nozzle is formed on the water guide. The spray head is designed as a rotatably arranged on the neck cover.

Der Sprühkopf kann entweder ortsfest oder an einem drehbaren Sprüharm im Bottich angeordnet werden. Besonders bevorzugt ist die ortsfeste, d.h. lediglich um die Drehachse drehbare, Anordnung an der Deckwand des Bottichs, da dort aus Platzgründen und auch im Hinblick auf den geringen Wasserdruck eine möglichst kleine, Platz sparende Sprühvorrichtung erwünscht ist.The spray head can be arranged either stationary or on a rotatable spray arm in the tub. Most preferably, the fixed, i. only rotatable about the axis of rotation, arrangement on the top wall of the tub, since there is a space-saving and in view of the low water pressure smallest possible, space-saving spray device is desired.

Weitere bevorzugte Ausführungen der Erfindung ergeben sich aus den abhängigen Ansprüchen .Ein solcher Geschirrspülautomat ergibt sich aus der nun folgenden Beschreibung anhand der Figuren. Dabei zeigen:

  • Fig. 1 einen schematisierten Schnitt durch einen Geschirrspülautomaten,
  • Fig. 2 eine Ansicht einer Ausführung des Sprühkopfs an einer Wasserführung zur Montage an der Dekke des Bottichs,
  • Fig. 3 einen Schnitt durch die Ausführung der Vorrichtung nach Fig. 2 senkrecht zur Längsachse der Wasserführung,
  • Fig. 4 ein Detail aus Fig. 2,
  • Fig. 5 eine bottichseitige Ansicht der Vorrichtung nach Fig. 2 und
  • Fig. 6 eine Seitenansicht der Vorrichtung nach Fig. 2.
Further preferred embodiments of the invention will become apparent from the dependent claims. Such a dishwasher will become apparent from the following description with reference to the figures. Showing:
  • Fig. 1 a schematic section through an automatic dishwasher,
  • Fig. 2 a view of an embodiment of the spray head on a water supply for mounting on the lid of the tub,
  • Fig. 3 a section through the execution of the device according to Fig. 2 perpendicular to the longitudinal axis of the water supply,
  • Fig. 4 a detail from Fig. 2 .
  • Fig. 5 a vat-side view of the device Fig. 2 and
  • Fig. 6 a side view of the device according to Fig. 2 ,

Eine bevorzugte Ausführung eines erfindungsgemässen Geschirrspülautomaten wird in Fig. 1 dargestellt. Der Geschirrspülautomat besitzt ein Gehäuse 1, in welchem ein Bottich 2 zur Aufnahme des Spülguts angeordnet ist. Der Bottich 2 ist durch eine Türe 3 verschlossen und kann in bekannter Weise mehrere Geschirrkörbe 4a, 4b aufnehmen.A preferred embodiment of an inventive dishwasher is in Fig. 1 shown. The dishwasher has a housing 1, in which a tub 2 is arranged for receiving the items to be washed. The tub 2 is closed by a door 3 and can accommodate a plurality of baskets 4a, 4b in a known manner.

Zum Besprühen des Spülguts sind Sprüharme und Sprühköpfe vorgesehen. Ein unterer Sprüharm 5 ist am Boden 6 des Bottichs 2 angeordnet und ein oberer Sprüharm 7 am oberen Geschirrkorb 4a. Beide Sprüharme 5, 7 sind in bekannter Weise drehbar. An der Deckwand 8 des Bottichs ist ferner eine Wasserführung 9 mit Sprühkopf 10 angeordnet. Die gleiche Art Sprühköpfe 10 kann auch an den Sprüharmen 5, 7 vorgesehen sein.For spraying the items to be sprayed spray arms and spray heads are provided. A lower spray arm 5 is arranged on the bottom 6 of the tub 2 and an upper spray arm 7 on the upper rack 4a. Both spray arms 5, 7 are rotatable in a known manner. On the top wall 8 of the tub, a water guide 9 is further arranged with spray head 10. The same type of spray heads 10 may also be provided on the spray arms 5, 7.

Eine bevorzugte Ausführung des Sprühkopfs 10 ist in Fig. 2 - 6 dargestellt. Der Sprühkopf 10 wird durch einen deckelförmigen Drehkörper 11 gebildet, der vorliegenden Ausführung vier Sprühöffnungen 12a, 12b, 13a, 13b für den Wasseraustritt aufweist (Fig. 4).A preferred embodiment of the spray head 10 is in Fig. 2-6 shown. The spray head 10 is formed by a lid-shaped rotary body 11, the present embodiment has four spray holes 12a, 12b, 13a, 13b for the water outlet ( Fig. 4 ).

Der Drehkörper 11 ist drehbar um eine Drehachse 14 gelagert. Er sitzt in der Art eines Deckels auf einem Stutzen 15 der- Wasserführung 9 auf. Dabei greifen Wasserführung 9 (bzw. Stutzen 15) und Drehkörper 11 so ineinander ein, dass sie eine radiale Führung bilden, die Bewegungen des Drehkörpers 11 senkrecht zur Drehachse 14 verhindert. Zur achsialen Fixierung des Drehkörpers 11 ist ein Haltearm 16 vorgesehen. Der Haltearm 16 weist in der vorliegenden Ausführung einen Bügel 17 auf, der sich quer über den Drehkörper 11 erstreckt und an beiden Enden an einem Rahmen 18 befestigt ist. Der Rahmen 18 umgreift die Aussenseite der Wasserführung 9 und ist in Schnappverschluss an zwei Nasen 19 der Wasserführung 9 befestigt.The rotary body 11 is rotatably supported about a rotation axis 14. He sits in the manner of a lid on a pipe 15 of the water 9. In this case, water guide 9 (or nozzle 15) and rotary body 11 engage each other so that they form a radial guide, which prevents movements of the rotary body 11 perpendicular to the axis of rotation 14. For axial fixation of the rotary body 11, a holding arm 16 is provided. The holding arm 16 in the present embodiment has a bracket 17 which extends transversely across the rotary body 11 and is secured to a frame 18 at both ends. The frame 18 surrounds the outside of the water guide 9 and is fastened in snap closure to two lugs 19 of the water guide 9.

Bottichseitig ist am Drehkörper 11 im Bereich der Drehachse 14 eine Erhöhung 20 vorgesehen (Fig. 3), die einen reibungsarmen Kontakt mit dem Bügel 17 sicherstellt.On the tub side, an elevation 20 is provided on the rotary body 11 in the region of the axis of rotation 14 ( Fig. 3 ), which ensures a low-friction contact with the bracket 17.

Im Betrieb tritt Wasser durch die Wasserführung 9 und den Stutzen 15 in den Drehkörper 11 und drückt diesen nach aussen, so dass er vom Bügel 17 beaufschlagt und an einer weiteren Auslenkbewegung gehindert wird. Das unter Druck stehende Wasser durchtritt die Sprühöffnungen 12a, 12b, 13a, 13b und wird in den Bottich gesprüht. Dabei sind die Sprühöffnungen so konstruiert, dass das Wasser mit tangentialer Geschwindigkeitskomponente austritt, so dass sich ein antreibendes Drehmoment ergibt und der Drehkörper 11 in Bewegung um die Drehachse 14 gesetzt wird. Pro Umdrehung des Drehkörpers tritt jede der Sprühöffnungen 12a, 12b, 13a, 13b zweimal unter dem Bügel 17 hindurch und wird von diesem teilweise abgedeckt, so dass der Wasserstrahl unterbrochen wird. Dies ergibt eine gepulste Bewässerung mit guter Reinigungswirkung.In operation, water passes through the water guide 9 and the nozzle 15 in the rotary body 11 and pushes it outwards, so that it is acted upon by the bracket 17 and prevented from further deflection movement. The pressurized water passes through the spray holes 12a, 12b, 13a, 13b and is sprayed into the tub. there For example, the spray holes are designed such that the water exits with a tangential velocity component, so that a driving torque results and the rotary body 11 is set in motion about the rotation axis 14. For each revolution of the rotary body, each of the spray openings 12a, 12b, 13a, 13b passes twice under the bracket 17 and is partially covered by it, so that the water jet is interrupted. This results in a pulsed irrigation with good cleaning effect.

Im Betrieb bildet sich zwischen der Wasserführung 9 und dem Drehkörper 11 ein Wasserfilm, der die Reibungskräfte zwischen den beiden Teilen reduziert.In operation, a water film is formed between the water guide 9 and the rotary body 11, which reduces the frictional forces between the two parts.

Wie bereits eingangs erwähnt, können auch die Sprüharme 5, 7 des Geschirrspülautomaten mit einem oder mehreren Sprühköpfen 10 gemäss Fig. 2 - 6 versehen werden (vgl. Fig. 1), wobei in diesem Falle die Sprüharme die jeweilige Wasserführung bilden. Vorzugsweise wird jeder Sprüharm 5, 7 mit mehreren Sprühköpfen versehen, die je unterschiedliche Abstände zur jeweiligen Schwenkachse des Sprüharms aufweisen, so dass das Wasser möglichst flächendeckend auf dem Spülgut verteilt wird.As already mentioned, the spray arms 5, 7 of the automatic dishwasher with one or more spray heads 10 according to Fig. 2-6 be provided (see. Fig. 1 ), in which case the spray arms form the respective water guide. Preferably, each spray arm 5, 7 is provided with a plurality of spray heads, each having different distances to the respective pivot axis of the spray arm, so that the water is distributed as widely as possible on the dishes.

Der vorliegende Geschirrspülautomat kann in verschiedensten Punkten abgeändert werden. Beispielsweise kann anstelle eines einfachen Bügels 17, der mit zwei Enden am Rahmen 18 befestigt ist, ein abgewinkelter Arm vorgesehen sein, der nur einseitig am Rahmen 18 bzw. an der Wasserführung 9 angeordnet ist. Es ist auch denkbar einen Bügel mit drei oder mehr abgewinkelten Armen zu verwenden, wobei ein äusseres Ende jedes Arms am Rahmen 18 befestigt ist und die inneren Enden der Arme sich im Bereich der Drehachse 14 treffen. Bei diesen Ausführungen wird der Wasserstrahl aus jeder Sprühöffnung 12a, 12b, 13a, 13b nur einmal bzw. mehr als zweimal pro Drehung unterbrochen.The present dishwasher can be modified in many different ways. For example, instead of a simple bracket 17, which is fastened with two ends to the frame 18, an angled arm may be provided which is arranged only on one side on the frame 18 or on the water guide 9. It is also conceivable to use a bracket with three or more angled arms, wherein an outer end of each arm is attached to the frame 18 and the inner ends of the arms meet in the region of the axis of rotation 14. In these embodiments, the water jet from each spray opening 12a, 12b, 13a, 13b is interrupted only once or more than twice per rotation.

Anstelle von vier Sprühöffnungen 12a, 12b, 13a, 13b kann am Drehkörper auch eine andere Zahl von Sprühöffnungen vorgesehen sein. Vorzugsweise sind die Sprühöffnungen mindestens teilweise unterschiedlich voneinander ausgestaltet, so dass sich eine bessere Wasserverteilung ergibt.Instead of four spray openings 12a, 12b, 13a, 13b, another number of spray openings may be provided on the rotary body. Preferably, the Spray openings at least partially designed differently from each other, so that there is a better water distribution.

Vorzugsweise sind die Sprühöffnungen jeweils derart symmetrisch um die Drehachse 14 angeordnet, dass sich die durch die Wasserumlenkung erzeugten radialen Lagerkräfte gegenseitig aufheben.Preferably, the spray openings are each arranged symmetrically about the axis of rotation 14 so that the radial bearing forces generated by the water deflection offset each other.

Claims (8)

  1. Automatic dishwasher with at least one spraying device with a water guiding means (9; 5; 7) and at least one spray head (10, 11) which is arranged on the water guiding means (9; 5; 7) and can be rotated about an axis (14) of rotation by water pressure, which spray head has at least one spray opening (12a, 12b, 13a, 13b), the water guiding means (9; 5; 7) and the spray head (10, 11) by engaging in one another, forming a radial guiding means, which prevents or restricts a radial relative movement of the two parts in relation to the axis (14) of rotation, the automatic dishwasher having a tub, and the spray head (10,11) being acted upon by a holding arm (16, 17) on the tub side and being held against the water guiding means (9; 5; 7), wherein, by rotating the spray head (10, 11), the spray opening (12a, 12b, 13a, 13b) is periodically at least partially covered by the holding arm (16, 17), characterised in that a connecting piece (15) is formed on the water guiding means (9; 5; 7), the spray head (10, 11) being configured as a cover rotatably arranged on the connecting piece (15).
  2. Automatic dishwasher according to claim 1, characterised in that with axial deflection of the spray head (10, 11), the holding arm (16, 17) acts upon the spray head (10, 11) on the tub side in the region of the axis (14) of rotation.
  3. Automatic dishwasher according to claim 2, characterised in that the spray head (10, 11) has a raised portion on the tub side in the region of the axis (14) of rotation.
  4. Automatic dishwasher according to any one of the preceding claims, characterised in that the holding arm (16, 17) is configured as a hoop extending over the spray head (10, 11) and is connected by at least two ends to the water guiding means (9; 5; 7).
  5. Automatic dishwasher according to any one of the preceding claims, characterised in that the holding arm (16, 17) has a fastening device (18) which embraces an outer side of the water guiding means (9; 5; 7), in snap-in manner.
  6. Automatic dishwasher according to any one of the preceding claims, characterised in that the water guiding means (9; 5; 7) is configured as a rotatable spray arm (5, 7) in the tub.
  7. Automatic dishwasher according to any one of the preceding claims, characterised in that a plurality of spray openings (12a, 12b, 13a, 13b) arranged symmetrically about the axis of rotation are provided in such a way that radial forces generated by water deflection cancel each other out.
  8. Automatic dishwasher according to any one of the preceding claims, characterised in that the spray head (10, 11) is arranged on a top wall (8) of the tub in a fixed manner but so as to be rotatable about the axis (14) of rotation.
EP20030011161 2002-07-18 2003-05-26 Spraying device for an automatic dishwasher Expired - Lifetime EP1382287B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH12562002 2002-07-18
CH12562002A CH702240B1 (en) 2002-07-18 2002-07-18 Dishwasher with spray.

Publications (3)

Publication Number Publication Date
EP1382287A2 EP1382287A2 (en) 2004-01-21
EP1382287A3 EP1382287A3 (en) 2004-09-15
EP1382287B1 true EP1382287B1 (en) 2008-05-21

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Application Number Title Priority Date Filing Date
EP20030011161 Expired - Lifetime EP1382287B1 (en) 2002-07-18 2003-05-26 Spraying device for an automatic dishwasher

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EP (1) EP1382287B1 (en)
CH (1) CH702240B1 (en)
DE (1) DE50309872D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007017114A1 (en) 2007-04-11 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Roof spray system for dishwashers
ITPR20120091A1 (en) * 2012-12-28 2014-06-29 Indesit Co Spa SPRAYER DEVICE FOR WASHING MACHINE.
CN103622652B (en) * 2013-11-12 2017-07-18 广东格兰仕集团有限公司 The top spraying mechanism of dish-washing machine
DE102018206443B4 (en) 2018-04-26 2022-02-03 BSH Hausgeräte GmbH domestic dishwasher

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1196746A (en) * 1967-05-30 1970-07-01 Terence Derwent Siddall Improvements relating to Liquid Sprayers Particularly for Washing Apparatus.
DE7827011U1 (en) * 1978-09-12 1979-01-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt DISHWASHER
IL68440A (en) * 1983-04-20 1985-03-31 Rubinstein Zvi Water sprinkler with rotary deflection head
IT235027Y1 (en) * 1994-06-16 2000-03-31 Zanussi Elettrodomestici DISHWASHER WITH ROTATING SPRAY REEL

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Publication number Publication date
EP1382287A2 (en) 2004-01-21
EP1382287A3 (en) 2004-09-15
CH702240B1 (en) 2011-05-31
DE50309872D1 (en) 2008-07-03

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