EP0766945B1 - Vorrichtung zum Waschen der Spülbehälterdecke einer Geschirrspülmaschine - Google Patents

Vorrichtung zum Waschen der Spülbehälterdecke einer Geschirrspülmaschine Download PDF

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Publication number
EP0766945B1
EP0766945B1 EP96830502A EP96830502A EP0766945B1 EP 0766945 B1 EP0766945 B1 EP 0766945B1 EP 96830502 A EP96830502 A EP 96830502A EP 96830502 A EP96830502 A EP 96830502A EP 0766945 B1 EP0766945 B1 EP 0766945B1
Authority
EP
European Patent Office
Prior art keywords
ceiling
dishwasher
rotor
washing
tank
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
EP96830502A
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English (en)
French (fr)
Other versions
EP0766945A2 (de
EP0766945A3 (de
Inventor
Roberto Bertazzoni
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.)
Smeg SpA
Original Assignee
Smeg SpA
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 Smeg SpA filed Critical Smeg SpA
Publication of EP0766945A2 publication Critical patent/EP0766945A2/de
Publication of EP0766945A3 publication Critical patent/EP0766945A3/de
Application granted granted Critical
Publication of EP0766945B1 publication Critical patent/EP0766945B1/de
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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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0057—Cleaning of machines parts, e.g. removal of deposits like lime scale or proteins from piping or tub
    • 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 present invention relates to washing devices utilized in dishwashers and more in particular to a device for washing the ceiling of a dishwasher's tank.
  • a further drawback of revolving sprinklers consists in that the washing nozzles are oriented in such a way as to hit always only certain portions of the ceiling, since they follow circular paths, whereby in some areas the dirt is not washed away.
  • the object of the present invention is to provide a device for washing the tank ceiling suitable to overcome the above-mentioned drawbacks.
  • a first fundamental advantage of the device according to the invention is that of generating a water film through which substantially the whole surface of the ceiling can be washed.
  • a second advantage of the present device is that of being quite simple and cheap, and therefore easy to manufacture and to install inside a dishwasher.
  • a third advantage of this device comes from its very small size, which allows a complete exploitation of the space existing between the top rack and the tank ceiling.
  • Still another advantage of the device is that the same water flow provides both the rotation of the rotor and the washing jets that emanate from said rotor. Therefore, a smaller and more efficient water consumption is achieved in this way.
  • the device according to the present invention is essentially made up of three members, namely a case 1, a coupling nut 2 that fixes the case 1 in its seat on the tank ceiling, and a rotor 3 that rotates about a vertical axis.
  • the rotor 3 is composed of a plurality of vertical vanes 4 linked at their internal ends to a blind hollow cylindrical hub 5 provided with a horizontal nozzle 6 in correspondence to each vane 4.
  • the hub 5 has a central vertical conduit 7 passing through nut 2 so as to project into case 1, and blocked therein by an O-ring 8 leaning on a slide ring 9.
  • the tightness achieved by the O-ring 8 and the slide ring 9 allows the rotor 3 to freely rotate, while avoiding water leakage even under operating conditions of high pressure, and therefore providing more effectiveness if compared to traditional systems.
  • Each vane is essentially S-shaped and it is provided with an intermediate deflector 10, located in correspondence to the first "curve” of the S, and an end deflector 11, also curved. These deflectors 10 and 11 have the twofold purpose of setting rotor 3 into rotation and of converting the horizontal jet coming out from the relevant nozzle 6 into a vertical water film.
  • a gasket 12 is interposed between case 1 and nut 2 for the tightness between the washing device and its corresponding seat formed in the tank ceiling.
  • the intermediate deflector 10 has a concavity which opposes that of the end deflector 11, so as to generate a rotational moment which is opposite to that given by the latter to rotor 3.
  • the resulting rotating moment produces an anti-clockwise rotation, as indicated by arrow R.
  • vanes 4 may come in a greater number, arranged along the perimeter of hub 5 in a way of obtaining a balanced rotation, typically in opposite angular positions.
  • the end of vane 4 may be particularly shaped so as to favour the opening of the jet and consequently the formation of the water film.
  • the end deflector 11 may be provided with a projecting lug 17 along the edge (fig.3), or with a series of grooves 18 arranged like a fan (fig.4).
  • a portion of the jet may also be deviated downwards in order to wash the convex surface of cups and glasses which are usually placed in the top rack, as indicated in fig.5.
  • rotor 3 might be made in other manners having different shapes, number and arrangement of vanes 4 and nozzles 6.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (5)

  1. Geschirrspülmaschine mit einer Vorrichtung zum Waschen der Spülbehälterdecke, dadurch gekennzeichnet, daß diese Vorrichtung ein mit einem Wasseranschluß (13) versehenes Gehäuse (1), eine Kupplungsmutter (2) zum Blokkieren dieses Gehäuses (1) in ihrem Sitz an der Behälterdecke und einen Rotor (3) aufweist, der um eine vertikale Achse rotiert und aus mehreren vertikalen Flügeln (4) besteht, die mit ihren inneren Enden an eine mit einer Blindöffnung versehene zylindrische Nabe (5) angeschlossen sind, die für jeden Flügel (4) eine waagerechte Düse (6) aufweist, wobei die Nabe (5) mit dem Gehäuse (1) über eine vertikale Leitung (7) verbunden ist, die durch die Mutter (2) verläuft und drehbar daran gehalten ist, jeder Flügel (4) mit ein oder mehreren Deflektoren geformt und ausgestattet ist, die in der Lage sind, den aus der betreffenden Düse (6) austretenden waagerechten Strahl abzulenken und in einen vertikalen Wasserfilm umzuwandeln.
  2. Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Rotor (3) zwei im wesentlichen S-förmige gegenüberliegende Flügel (4) aufweist, die einen Zwischendeflektor (10) und einen Enddeflektor (11) aufweisen, die entsprechend der ersten bzw. zweiten Kurve des S angeordnet sind und entgegengesetzte Höhlungen haben.
  3. Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Rotor (3) zwei im wesentlichen J-förmige gegenüberliegende Flügel (4) aufweist, die mit einem einzigen Enddeflektor (11) versehen sind.
  4. Geschirrspülmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Enddeflektor (11) längs seines Randes einen vorspringenden Ansatz (17) aufweist.
  5. Geschirrspülmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Enddeflektor (11) eine Serie von fächerförmig angeordneten Nuten (18) aufweist.
EP96830502A 1995-10-03 1996-10-01 Vorrichtung zum Waschen der Spülbehälterdecke einer Geschirrspülmaschine Expired - Lifetime EP0766945B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI952021 1995-10-03
IT95MI002021A IT1275786B1 (it) 1995-10-03 1995-10-03 Dispositivo per lavare il cielo della vasca di una macchina lavastoviglie

Publications (3)

Publication Number Publication Date
EP0766945A2 EP0766945A2 (de) 1997-04-09
EP0766945A3 EP0766945A3 (de) 1998-07-01
EP0766945B1 true EP0766945B1 (de) 2002-01-09

Family

ID=11372307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830502A Expired - Lifetime EP0766945B1 (de) 1995-10-03 1996-10-01 Vorrichtung zum Waschen der Spülbehälterdecke einer Geschirrspülmaschine

Country Status (4)

Country Link
EP (1) EP0766945B1 (de)
DE (1) DE69618409T2 (de)
ES (1) ES2169789T3 (de)
IT (1) IT1275786B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10959596B2 (en) 2015-12-16 2021-03-30 Whirlpool Corporation Dishwasher with a spray arm system having a bearing assembly

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787007B1 (fr) * 1998-12-15 2001-02-23 Esswein Sa Lave-vaisselle equipe de buses tournantes pour arrosage homogene
EP1046370A1 (de) * 1999-04-19 2000-10-25 CHEMISCHE FABRIK DR. WEIGERT (GMBH & CO.) Bandspülmaschine
KR20040023109A (ko) * 2002-09-10 2004-03-18 엘지전자 주식회사 식기세척기용 상부 물분사장치
PL1929920T3 (pl) * 2006-12-06 2011-04-29 Electrolux Home Products Corp Nv Zmywarka
DE102009002147A1 (de) * 2009-04-02 2010-10-14 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine
USD675386S1 (en) 2012-02-16 2013-01-29 Electrolux Home Products, Inc. Dishwasher spray arm
USD675387S1 (en) 2012-02-16 2013-01-29 Electrolux Home Products, Inc. Dishwasher spray arm with satellite spray arm
US9440266B2 (en) * 2012-11-30 2016-09-13 Steris Inc. Washer / disinfector having a water inlet diffuser
US11439291B2 (en) * 2016-12-20 2022-09-13 Electrolux Appliances Aktiebolag Washing liquid distribution device for a dishwasher
USD885694S1 (en) 2017-09-19 2020-05-26 Electrolux Home Products, Inc. Sprayer for dishwasher

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB633496A (en) * 1947-04-28 1949-12-19 Electrolux Ab Improvements in or relating to dish washing machines
US2987260A (en) * 1959-11-18 1961-06-06 Gen Electric Top spray dishwasher
DE1503866A1 (de) * 1965-06-21 1969-06-12 Rowenta Metallwarenfab Gmbh Geschirrspuelmaschine
FR2679121B1 (fr) * 1991-07-16 1995-05-19 Esswein Sa Lave-vaisselle a fonctionnement ameliore.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10959596B2 (en) 2015-12-16 2021-03-30 Whirlpool Corporation Dishwasher with a spray arm system having a bearing assembly

Also Published As

Publication number Publication date
EP0766945A2 (de) 1997-04-09
ITMI952021A1 (it) 1997-04-03
ES2169789T3 (es) 2002-07-16
ITMI952021A0 (de) 1995-10-03
DE69618409D1 (de) 2002-02-14
DE69618409T2 (de) 2002-08-29
IT1275786B1 (it) 1997-10-17
EP0766945A3 (de) 1998-07-01

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