EP3791768B1 - Geschirrspüler mit verbesserter waschwirksamkeit - Google Patents

Geschirrspüler mit verbesserter waschwirksamkeit Download PDF

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Publication number
EP3791768B1
EP3791768B1 EP20193634.1A EP20193634A EP3791768B1 EP 3791768 B1 EP3791768 B1 EP 3791768B1 EP 20193634 A EP20193634 A EP 20193634A EP 3791768 B1 EP3791768 B1 EP 3791768B1
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EP
European Patent Office
Prior art keywords
shaft
dishwasher
plate
spray arm
spraying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20193634.1A
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English (en)
French (fr)
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EP3791768A1 (de
Inventor
Yusuf Koc
Furkan BAYAV
Omer Burak Coban
Murat KOSAR
Alper BALKAN
Nevin AYATA AKKAS
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Publication date
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Publication of EP3791768A1 publication Critical patent/EP3791768A1/de
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Publication of EP3791768B1 publication Critical patent/EP3791768B1/de
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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
    • A47L15/16—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with rigidly-mounted spraying devices
    • 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
    • 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

Definitions

  • the present invention relates to a dishwasher with improved washing efficiency.
  • Dishwashers generally comprise upper and lower racks which are placed inside the washing tub and wherein the kitchenware items such as pots, plates, etc. are placed.
  • a spray arm is provided, which is connected to the water line and which rotates around its own axis so as to spray water onto the items in the rack.
  • the holes on the upper spray arm connected to the rack and the lower spray arm connected to the lower region of the washing tub the water is delivered into the washing tub.
  • the position and the geometry of said holes are designed such that the sprayed water scans more area in the washing tub so as to reach all the surfaces of the dishes.
  • the spray arm rotates as a result of the angular momentum generated by the water sprayed through the holes arranged thereon.
  • the holes generating said momentum are generally positioned towards the ends of the spray arm.
  • the water leaving the holes hits the dirt dishes and plays a critical role in removing the dirt from the surfaces.
  • one of the basic principles is the mechanical effect generated by the sprayed water. Increase in the mechanical effect positively affects the washing performance. Low water flow rate and pressure decreases the washing performance.
  • additional spray arms in the vicinity of the spray arm are used, which spray extra water to the region in the rack where dishes with relatively more intense dirts are placed, thus enabling said dishes to be effectively washed.
  • Said additional spray arms are used to better clean heavy stains, for example loads such as burnt pot, etc.
  • a dishwasher having a nozzle which extends from the side of the spray arm and which sprays water to a region of the rack situated thereabove.
  • the additional spray arm disclosed in this document moves forward by means of the rotating nozzle provided thereon, and performs the washing process for a certain time depending on the washing algorithm. As the water sprayed from the nozzles on the lower spray arm hits the rib on the additional spray arm, the additional spray arm returns to the initial position.
  • the operational frequency of the additional spray arm is controlled by an algorithm. Since the forward movement of the additional spray arm is provided by a rotating nozzle, some of the total fluid energy is used for pushing the additional spray arm forward. This decreases the energy of the water sprayed from the nozzles used for washing. Since the energy of the washing nozzles decreases, the mechanical effect applied for removing dirts also decreases, adversely affecting the washing performance.
  • the aim of the present invention is the realization of a dishwasher with improved washing efficiency.
  • the dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises an additional spray arm having a body, a lid, at least one spraying member which is pivotably attached so as to rotate around the point of attachment to the body, a shaft which is positioned at the center of the body and which rotates around its own axis with the effect of the water coming from the water line, a first pin which extends perpendicularly to the shaft and a first plate which is contacted by the first pin and which moves the spraying member by linearly moving in the contact direction of the first pin.
  • the additional spray arm used for better washing very dirty dishes in addition to the lower and upper spray arms in the dishwasher is enabled to be operated only by moving the spraying members without using any rotating nozzle.
  • the spraying members on the additional spray arm are enabled to move to right and left or forwards and backwards.
  • the additional spray arm is enabled to move in a direction opposite to the movement direction of the spraying members. Consequently, without using any rotating nozzle, the additional spray arm is moved and the washing performance is improved.
  • the body and the lid are circular, and the spraying members are disposed in the body close to the edge of the body at certain intervals in the radial direction.
  • the spraying member comprises an inlet which is connected to the water line, an outlet which sprays water, and an intermediate member which is arranged between the inlet and the outlet and which enables the outlet to rotate 360° around approximately the point where the spraying member is fixed.
  • the lid is attached onto the body while the body accommodates the spraying members, the shaft and the first plate, and comprises holes which are aligned with the outlets of the spraying members and through which the outlets extend outside the body when the lid is attached onto the body.
  • the lid protecting the spraying members, the shaft and the first plate against external factors after the spraying members, the shaft and the first plate are placed into the body is placed onto the body so as to cover the body such that the holes towards which the outlets of the spraying members extend are aligned with the outlets.
  • the additional spray arm comprises a shaft which is disposed in the middle of the spraying members positioned in the radial direction at the center of the body and perpendicularly to the base of the body so as to rotate around its own axis with the effect of the water coming from the water line.
  • the additional spray arm further comprises a first pin which extends on the shaft outwards from the shaft so as to be perpendicular to the axis of the shaft, and a second pin which extends outwards from the shaft in a parallel horizontal direction opposite to the first pin such that a certain distance in the vertical axis remains therebetween.
  • the additional spray arm further comprises a first plate and a second plate which are respectively aligned with the first pin and the second pin and which are positioned in the body so as to be in the middle of the spraying members such that a certain distance in the vertical axis remains therebetween and that the shaft and the pins are positioned at the center of the first plate and the second plate.
  • a housing surrounding the shaft and the first and second pins is arranged at the center of the first and second plates, and a recess is arranged at the point where the first and second plates are seated onto the intermediate member and where the first plate contacts the outlet and the second plate contacts the inlet.
  • One or more than one cut-out is provided on the first and second plates.
  • the first and second plates are enabled to be light, providing savings in material.
  • the shaft By means of the shaft, the first and second pins and the first and second plates which are provided on the additional spray arm, all the spraying members are enabled to be directed to the same direction.
  • the shaft, the first and second pins and the first and second plates work as a cam-shaft system, thus enabling the spraying arms in contact with the first and second plates to move.
  • the plate By means of the radial movement of the shaft, the plate linearly moves the spraying members which are in contact with the former. Thus, the circular movement is converted into linear movement.
  • the dishwasher comprises a washing tub (1); at least one rack which is disposed in the washing tub (1) and wherein the items to be washed are placed; at least one spray arm (2) which is connected to the water line so as to spray water into the rack and the washing tub (1); and one or more than one additional spray arm (3) which is positioned in the vicinity of the spray arm (2) and which enables a region of the washing tub (1) to be swept with water by means of the water coming from the water line ( Figure 1 ).
  • the additional spray arm (3) comprises a body (4), a lid (5), at least one spraying member (6) which is pivotably attached so as to rotate around the point of attachment to the body (4), a shaft (10) which is positioned at the center of the body (4) and which rotates around its own axis with the effect of the water coming from the water line, a first pin (11) which extends perpendicularly to the shaft (10) and a first plate (13) which is contacted by the first pin (11) and which moves the spraying member (6) by linearly moving in the contact direction of the first pin (11).
  • the additional spray arm (3) used for better washing very dirty dishes in addition to the lower and upper spray arms (2) in the dishwasher is enabled to be operated only by moving the spraying members (6) without using any rotating nozzle.
  • the energy of the water sprayed by the spraying members (6) used for washing and hence the washing efficiency is increased.
  • the water pumped with the operation of the circulation pump reaches the spray arm (2).
  • the water flows towards the two ends of the spray arm (3) and reaches the flow guiding valve at the outlet of the circulation pump. Afterwards, the water is pumped to the lower or upper spray arm (2) depending on the position of the valve. Three outlets are arranged on the flow guiding valve. The first delivers the water pumped by the circulation pump to the lower spray arm (2), the second to the upper spray arm (2) and the third to the additional spray arm (3) which is used for intensively washing a certain region.
  • the water reaching the additional spray arm (3) rotates the shaft (10), and the first pin (11) radially moving together with the shaft (10) hits the first plate (13) and moves the first plate (13) and hence one or more than one spray arm (6) in the same direction which is contact with the wall of the first plate (13) while the additional spray arm (3) move in a direction opposite to the spraying members (6).
  • the shaft (10), the first pin (11) and the first plate (13) converts the circular movement to linear movement just like a cam-shaft mechanism.
  • the body (4) and the lid (5) are circular, and the spraying members (6) are disposed in the body (4) close to the edge of the body (4) at certain intervals in the radial direction.
  • the spraying member (6) comprises an inlet (7) which is connected to the water line, an outlet (8) which sprays water, and an intermediate member (9) which is arranged between the inlet (7) and the outlet (8) and which enables the outlet (8) to rotate 360° around approximately the point where the spraying member (6) is fixed.
  • the spraying member (6) is fixed to the body (4) by means of a pivot.
  • the lid (5) is attached onto the body (4) while the body (4) accommodates the spraying members (6), the shaft (10) and the first plate (13), and comprises holes (18) which are aligned with the outlets (() of the spraying members (6) and through which the outlets (8) extend outside the body (4) when the lid (5) is attached onto the body (4).
  • the lid (5) protecting the spraying members (6), the shaft (10) and the first plate (13) against external factors after the spraying members (6), the shaft (10) and the first plate (13) are placed into the body (4) is placed onto the body (4) so as to cover the body (4) such that the holes (18) towards which the outlets (8) of the spraying members (6) extend are aligned with the outlets (8).
  • the additional spray arm (3) comprises a shaft (10) which is disposed in the middle of the spraying members (6) positioned in the radial direction at the center of the body (4) and perpendicularly to the base of the body (4) so as to rotate around its own axis with the effect of the water coming from the water line.
  • the additional spray arm (3) further comprises a first pin (11) which extends on the shaft (10) outwards from the shaft (10) so as to be perpendicular to the axis of the shaft (10), and a second pin (12) which extends outwards from the shaft (10) in a parallel horizontal direction opposite to the first pin (11) such that a certain distance in the vertical axis remains therebetween.
  • the additional spray arm (3) further comprises a first plate (13) and a second plate (14) which are respectively aligned with the first and second pins (11 and 12) and which are positioned in the body (4) so as to be in the middle of the spraying members (6) such that a certain distance in the vertical axis remains therebetween and that the shaft (10) and the first second pins (11 and 12) are positioned at the center of the first plate (13) and the second plate (14) ( Figure 4 ).
  • a housing (15) surrounding the shaft (10) and the first and second pins (11 and 12) is arranged at the center of the first and second plates (13 and 14), and a recess (16) is arranged at the point where the first and second plates (13 and 14) are seated onto the intermediate member (9) and where the first plate (13) contacts the outlet (8) and the second plate (14) contacts the inlet (7).
  • the water reaching the additional spray arm (3) rotates the shaft (10), and the first pin (11) radially moving together with the shaft (10) hits the housing (15) on the first plate (13) and the second pin (12) hits the housing (15) on the second plate (14) so as to move the first plate (13) and the second plate (14), hence one or more than one spray arm (6) which is contact with the recesses (16) at the wall of the first plate (13) and the second plate (14) while the additional spray arm (3) move in a direction opposite to the spraying members (6).
  • the first plate (13) contacts the outlets (8) on the spraying members (6) and the second plate (14) contacts the inlets (7) on the second plate (14), thus enabling the spraying members (6) to be directed to the same direction.
  • One or more than one cut-out (17) is provided on the first and second plates (13 and 14).
  • the first and second plates (13 and 14) are enabled to be light, providing savings in material.
  • the first and second plates (13 and 14) are elliptical.
  • the housing (15) is quadrilateral.
  • the first and second pins (11 and 12) contact the long side of the housing (15) arranged on the first and second plates (13 and 14).

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (10)

  1. Ein Geschirrspüler umfasst eine Spülwanne (1); mindestens einen Korb, der in der Spülwanne (1) angeordnet ist und in dem das Spülgut abgelegt wird; mindestens einen Sprüharm (2), der mit einer Wasserleitung verbunden ist, um Wasser in den Korb und die Spülwanne (1) zu sprühen; einen oder mehrere zusätzliche Sprüharme (3), die in der Nähe des Sprüharms (2) positioniert sind und das ermöglicht, mittels des aus der Wasserleitung kommenden Wassers einen Bereich der Spülwanne (1) mit Wasser zu bespülen, wobei der zusätzliche Sprüharm (3) einen Körper (4), einen Deckel (5), mindestens ein Sprühelement (6) aufweist; gekennzeichnet ist es dadurch, dass das Sprühelement (6) schwenkbar befestigt ist, um sich um den Befestigungspunkt am Körper (4) zu drehen, und der zusätzliche Sprüharm (3) außerdem eine Welle (10) umfasst, die in der Mitte des Körpers (4) positioniert ist und sich unter der Wirkung des aus der Wasserleitung kommenden Wassers um ihre eigene Achse dreht, einen ersten Stift (11), der sich senkrecht von der Welle (10) erstreckt, und eine erste Platte (13), die mit dem ersten Stift (11) und dem Sprühelement (6) in Kontakt steht, so angeordnet, dass er mit der Welle (10) und dem ersten Stift (11) als Nockenwellenmechanismus arbeitet, um die kreisförmige Bewegung der Welle (10) in eine lineare Bewegung umzuwandeln, wobei die erste Platte (13) so angeordnet ist, dass sie, während sich die Welle (10) dreht, das Sprühelement (6) durch lineare Bewegung in der Kontaktrichtung des ersten Stifts (11) bewegt.
  2. Ein Geschirrspüler, wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass der zusätzliche Sprüharm (3) den Körper (4) und den Deckel (5) umfasst, die kreisförmig sind.
  3. Ein Geschirrspüler, wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass die Sprühelemente (6) in bestimmten Abständen in radialer Richtung nahe am Rand des Körpers (4) im Körper (4) angeordnet sind.
  4. Ein Geschirrspüler, wie in den Ansprüchen 1 und 3 aufgeführt, ist dadurch gekennzeichnet, dass das Sprühelement (6) einen Einlass (7), der mit der Wasserleitung verbunden ist, einen Auslass (8), der Wasser versprüht, umfasst, und ein Zwischenelement (9), das zwischen dem Einlass (7) und dem Auslass (8) angeordnet ist und das eine Drehung des Auslasses (8) um 360° um ungefähr den Punkt ermöglicht, an dem das Sprühelement (6) befestigt ist.
  5. Ein Geschirrspüler, wie in Anspruch 4 aufgeführt, ist dadurch gekennzeichnet, dass der Deckel (5), der auf dem Körper (4) befestigt ist, während der Körper (4) die Sprühelemente (6), den Schaft (10) und die erste Platte (13) aufnimmt, und der Löcher (18) aufweist, die mit den Auslässen (8) der Sprühelemente (6) ausgerichtet sind und durch die sich die Auslässe (8) außerhalb des Körpers (4) erstrecken, wenn der Deckel (5) auf den Körper (4) aufgesetzt ist.
  6. Ein Geschirrspüler, wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass der Schaft (10) senkrecht zur Grundfläche des Körpers (4) angeordnet ist und in der Mitte der Sprühelemente (6) in radialer Richtung positioniert ist, und einen zweiten Stift (12), der sich von der Welle (10) in einer parallelen horizontalen Richtung gegenüber dem ersten Stift (11) nach außen erstreckt, so dass dazwischen ein bestimmter Abstand in der vertikalen Achse verbleibt.
  7. Ein Geschirrspüler, wie in Anspruch 6 aufgeführt, ist dadurch gekennzeichnet, dass der zusätzliche Sprüharm (3) die erste Platte (13) und eine zweite Platte (14) umfasst, die jeweils mit den ersten und zweiten Stiften (11 und 12) ausgerichtet sind und im Körper (4) positioniert sind, so dass sie sich in der Mitte der Sprühelemente (6) befinden, so dass zwischen ihnen ein gewisser Abstand in der vertikalen Achse verbleibt und dass die Welle (10) und die ersten zweiten Stifte (11 und 12) in der Mitte der ersten Platte (13) und der zweiten Platte (14) positioniert sind.
  8. Ein Geschirrspüler, wie in Anspruch 7 aufgeführt, ist dadurch gekennzeichnet, dass die ersten und zweiten Platten (13 und 14) in ihrer Mitte ein Gehäuse (15) umfassen, das die Welle (10) und die ersten und zweiten Stifte (11 und 12) umgibt und eine Aussparung (16), die an der Stelle angeordnet ist, an der die ersten und zweiten Platten (13 und 14) auf dem Zwischenelement (9) aufsitzen und wobei die erste Platte (13) den Auslass (8) und die zweite Platte (14) den Einlass (7) berührt.
  9. Ein Geschirrspüler, wie in Anspruch 7 und 8 aufgeführt, ist dadurch gekennzeichnet, dass die ersten und zweiten Platten (13 und 14) elliptisch sind.
  10. Ein Geschirrspüler, wie in einem der vorherigen Ansprüchen aufgeführt, ist dadurch gekennzeichnet, dass die Sprühelemente (6) so angeordnet sind, dass sie in die gleiche Richtung gerichtet sind.
EP20193634.1A 2019-09-16 2020-08-31 Geschirrspüler mit verbesserter waschwirksamkeit Active EP3791768B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201914029 2019-09-16

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EP3791768A1 EP3791768A1 (de) 2021-03-17
EP3791768B1 true EP3791768B1 (de) 2023-07-12

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PL (1) PL3791768T3 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0469184B1 (de) * 1990-07-10 1994-08-31 WERY S.p.A. Rotierbare Vorrichtung mit Waschdüsen in Geschirrspülern und damit ausgerüstete Geschirrspüler
JP4244374B2 (ja) * 2002-02-15 2009-03-25 Ｔｏｔｏ株式会社 吐水装置
DE60309474D1 (de) 2002-06-19 2006-12-14 R & C Holding Aps Phasenregelkreis mit inkrementiellen phasendetektoren und umsetzer zum kombinieren einer logikoperation mit einer digital/analog umsetzung
SE524021C2 (sv) 2002-08-30 2004-06-15 Asko Cylinda Ab Diskmaskin med intensivzon
TR201719775T3 (tr) 2013-08-06 2019-05-21 Arcelik As Yikama etki̇nli̇ği̇ artirilan bi̇r bulaşik maki̇nasi
TR201706566A3 (tr) * 2017-05-04 2018-12-21 Arcelik As Bi̇r su püskürtme başliği i̇çeren bi̇r bulaşik maki̇nesi̇
CN109259694B (zh) * 2018-11-22 2024-05-28 北斗星智能电器有限公司 一种喷淋系统及清洗机

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PL3791768T3 (pl) 2023-12-27

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