EP0068974B1 - Geschirrspüler mit selbstreinigendem Sieb - Google Patents

Geschirrspüler mit selbstreinigendem Sieb Download PDF

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Publication number
EP0068974B1
EP0068974B1 EP19820401091 EP82401091A EP0068974B1 EP 0068974 B1 EP0068974 B1 EP 0068974B1 EP 19820401091 EP19820401091 EP 19820401091 EP 82401091 A EP82401091 A EP 82401091A EP 0068974 B1 EP0068974 B1 EP 0068974B1
Authority
EP
European Patent Office
Prior art keywords
filter
water
washing machine
spray arm
dish washing
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
Application number
EP19820401091
Other languages
English (en)
French (fr)
Other versions
EP0068974A1 (de
Inventor
Camille Barbier
Laurent Didier
Benoit Gailledrat
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.)
Esswein SA
Original Assignee
Esswein SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9260025&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0068974(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Esswein SA filed Critical Esswein SA
Publication of EP0068974A1 publication Critical patent/EP0068974A1/de
Application granted granted Critical
Publication of EP0068974B1 publication Critical patent/EP0068974B1/de
Expired 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
    • A47L15/4202—Water filter means or strainers
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
    • 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
    • A47L15/4202—Water filter means or strainers
    • A47L15/4204—Flat filters
    • 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 an automatically cleaned recycling filter.
  • the filling water is usually sent by a pump in a circuit supplying a series of watering reels which spray the dishes to be cleaned.
  • the water dropped from the dishes is collected after passing through a filter, called a recycling filter, which retains dirt, and again directed into the same circuit which feeds the watering reels to carry out a new cycle. These cycles are repeated successively until the end of the washing operation.
  • the water thus circulates in a closed cycle. Dirt accumulates on the recycling filter, decreases the flow of recycling water and may cause total clogging.
  • a drainage circuit which discharges the used water and dirt, and the recycling filter is usually associated with the filter of this drainage circuit and forms with the latter a single piece.
  • the recycling filter must be provided with relatively fine meshes, and to obtain rapid emptying after washing, the drain filter must have relatively large meshes which make it possible to have a large evacuation rate and only retain large waste which could block the drain pump or damage it.
  • This solution consists in having the respective suction outlets of the recycling and emptying pumps in places quite distant from each other, and a mixed filter above these.
  • This mixed filter comprises relatively fine meshes in the area around the suction mouth of the recycling pump and relatively large meshes in the area near the suction mouth of the drain pump.
  • dirt still accumulates in the area of the fine mesh filter, decreases the passage section for the recycling water and may cause insufficient water flow for proper washing of the dishes.
  • the object of the present invention is to avoid the drawbacks recalled in the preceding paragraphs, makes it possible to produce a dishwasher having a recycling filter automatically cleaned over the whole of its surface, giving clean recycling water, having permanently a section sufficient filtration for the machine to operate with a minimum amount of water, and a removable, handy, easy-to-maintain drain filter.
  • a dishwasher with recycled water comprising a recycling filter of the type with a substantially horizontal surface on which dirt is retained, and means contributing to the cleaning of this filter, is characterized in that it comprises for a cleaning of this recycling filter over its entire surface of the means ensuring a thrust of the dirt respectively from the periphery towards the median circular zone and from the center towards this median circular zone of this recycling filter and along this median circular zone up to in a drain well located in this area.
  • a dishwasher 1 produced according to the invention illustrated diagrammatically in FIGS. 1 and 2 comprises an interior tank 2 and an exterior bodywork 3.
  • a lower dish basket 4 In the interior tank 2 are mounted a lower dish basket 4, a basket upper dishes 5, a lower watering reel 6, upper watering reels 7 and 8 and bodies supplying water to these watering reels and draining bodies.
  • These water supply members and these drain members are schematically and partially shown in FIG. 2.
  • the drive members, the dishwasher control members and the other accessories of the machine are those of known types and do not are not shown.
  • FIG. 2 In the lower part 9 of the tank 2 ( Figure 2) are grouped a tank bottom 10, a recycling pump 11 whose wheel is indicated at 12, pipes 13 and 14 respectively guiding the water discharged by the recycling pump 11 to the lower watering reel 6 and the upper watering reels 7 and 8, a recycling filter 15 and a removable drainage well 16 mounted in the recycling filter 15 and a drainage chamber 17 to connect the external surface of this filter 15 to a drain pump not shown.
  • the recycling filter 15 is fixed, substantially coaxial with the axis of rotation 18 of the lower watering reel 6 and comprises a relatively flat, substantially horizontal surface covering almost all of the lower part 9 of the tank 2.
  • the well of removable drain 16 which includes steep side walls, is mounted in the area of the central circular ring of the recycling filter 15 at a point radially off-center towards the outside.
  • the lower spray reel 6 is provided in its lower surface 19 facing the recycling filter 15, with at least two nozzles 20 and 21 creating jets of diverging flat inclined water 22, 23 directed on the recycling filter in the direction of rotation 24 of the reel (6), obliquely to the longitudinal axis of symmetry 25 of this reel and respectively from the center to the middle circular area and from the periphery to this middle circular area of the recycling filter 15, this which allows, during the rotation of the reel 6, to these jets of water to repel the dirt being on the recycling filter 15, towards the median circular zone and along this zone towards the draining well 16 at each passage of these jets 22, 23 and to precipitate or pour them into this well.
  • the recycling filter 15 which is provided throughout the surface with meshes 26 of which only a part is shown in FIG. 3, presents to soiling a substantially horizontal surface which is smooth and / or convex upwards.
  • a circular shape of the recycling filter 15 allows the flat water jets 22, 23 which repel the dirt, to reach all the points of this filter 15 and to ensure cleaning of the entire surface of the latter.
  • a large surface of the recycling filter 15 also allows the latter to advantageously have fine meshes to remove even dirt of very small dimensions.
  • this well may even have a small dimension compared to that of the recycling filter 15 without reducing the efficiency of the removal of this dirt.
  • the drain well 16 comprises in its side walls a relatively fine mesh filter 27 for the return of the recycling water into the recycling chamber 28, and in its bottom, a relatively wide mesh filter 29 which retains only large waste which could damage or immobilize the drain pump.
  • the small size of the removable or removable drain well 16 facilitates its removal and its replacement in the dishwasher 1 consequently its maintenance. In general, this drain well 16 is not very dirty because most of the dirt which falls into the drain chamber 17 through its large mesh filter 29 is discharged during the drain which follows each of the phases of the washing cycle.
  • the cleaning nozzles 20 and 21 which create jets of cleaning water for the recycling filter 15 are (FIGS. 4 to 6) formed by cutting and stamping in the lower half 19 of the lower reel 6, the upper half 30 of this reel being provided with spray nozzles of known types not shown.
  • the cleaning nozzle 20 is formed in the outer end of an arm of the lower reel (6) while the cleaning nozzle (21) is formed in the inner end of the opposite arm of this lower reel (6) .
  • the width 31 and the height 32 of each of the cleaning nozzles 20 or 21 determine the dimension of the spread jet of water 22 or 23 while the angle 33 that each of the nozzles 20 or 21 forms with the plan of the reel or of the lower half 19 of the reel 6, determines the inclination according to which the jet 22 or 23 collides with the dirt and drives it back.
  • a good choice of the values of these width 31, height 32 and angle 33 makes it possible to obtain a good efficiency of the repression of dirt.
  • the width 31 and the height 32 can be respectively of the order of 8 mm to 15 mm and 1 to 2 mm, and the angle 33 is of the order of 10 ° to 25 °.
  • the cleaning nozzles 20 and 21 have a width 31 of 11 mm, a height 32 of 1.5 mm and an angle 33 of 15 °.
  • the water jet created by the nozzle 20 is directed obliquely with respect to the axis of symmetry longitudinal 25 of the reel 6 at an angle 34 of the order of 20 ° to 40 ° and the jet 23 created by the nozzle 21 is oriented obliquely with respect to this axis 25 at an angle 35 of the order of 30 ° to 50 °.
  • the angles 34 and 35 of these water jets 22 and 23 have values of 30 ° and 40 ° respectively.
  • the end 40 in the form of an arc of a circle of each nozzle improves the spreading of the jet.
  • the lower water reel 6 sends to the recycling filter 15 by cleaning nozzles 20 and 21, jets of water 22, 23 grazing, divergent and flat, in the form of brushes in the direction of rotation.
  • 24 of the reel 6, obliquely to the longitudinal axis of symmetry of the reel 6 and respectively from the center to the middle circular area and from the periphery to this middle circular area of this recycling filter 15 to discharge dirt into this area and along it to the drain well 16 and pour it there.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (7)

1. Geschirrspülmaschine mit Wasserumwälzung mit einem Umwälzfilter (15) mit im wesentlichen waagerechter Oberfläche, auf der die Schmutzteilchen zurückgehalten werden, und mit zur Reinigung dieses Filters beitragenden Vorrichtungen, dadurch gekennzeichnet, daß sie für eine die gesamte Oberfläche dieses Umwälzfilters (15) erfassende Reinigung Vorrichtungen (22, 23) aufweist, die ein Vorschieben der Schmutzteilchen jeweils vom Umfang zum mittleren kreisförmigen Bereich und von der Mitte zum mittleren kreisförmigen Bereich dieses Umwälzfilters (15) und längs dieses mittleren kreisförmigen Bereichs bis in einen in diesem Bereich vorhandenen Entleerungsschacht (16) bewirken.
2. Geschirrspülmaschine nach Anspruch 1 mit Düsen in der Unterseite des drehbaren Sprüharms (6), die zum Reinigen des Umwälzfilters (15) beitragen, dadurch gekennzeichnet, daß sie als Vorrichtungen zum Vorschieben der Schmutzteilchen mindestens zwei in der Unterseite des drehbaren Sprüharmes (6) ausgebildete Düsen (20, 21) aufweist, welche Wasserstrahlen (22, 23) erzeugen, die auf das Umwälzfilter (15) in der Drehrichtung (24) dieses Sprüharms (6) schräg bezüglich der Längssymmetrieachse dieses Sprüharms und jeweils der eine (22) vom Umfang dieses Umwälzfilters (15) in Richtung auf den Entleerungsschacht (16) und der andere von der Mitte dieses Umwälzfilters (15) in Richtung auf diesen Schacht (16) gerichtet sind.
3. Geschirrspülmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die eine der Düsen (20) einen Wasserstrahl (22) erzeugt, der einen Winkel in der Größenordnung von 20° bis 40° mit der Längsachse (25) des drehbaren Sprüharmes (6) bildet, und die andere Düse (21) einen Wasserstrahl (23) erzeugt, der einen Winkel in der Größenordnung von 30° bis 50° mit der Längsachse (25) dieses drehbaren Sprüharmes (6) bildet.
4. Geschirrspülmaschine nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß die Düsen (20, 21) divergierende, streifende und flache Wasserstrahlen (22, 23) erzeugen.
5. Geschirrspülmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Düsen (20, 21) eine Breite (31) in der Grössenordnung von 8 mm bis 15 mm, eine Höhe (32) in der Größenordnung von 1 mm bis 2 mm und eine Neigung (33) bezüglich der Ebene des Drehbaren Sprüharmes (6) in einem Winkel der Größenordnung von 10° bis 25° haben.
6. Geschirrspülmaschine nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der Entleerungsschacht (16) am Umwälzfilter (15) an einem nach außen verschobenen Punkt im kreisförmigen Mittelbereich dieses Filters abnehmbar angebracht ist und dazu beiträgt, die Außenfläche dieses Filters (15) mit einem Entleerungspumpe zu verbinden.
7. Geschirrspülmaschine nach Anspruch 6, dadurch gekennzeichnet, daß sie einen Entleerungsschacht (16) aufweist, der in seinen Seitenwänden ein feinmaschiges Filter (27) und in seinem Boden ein grobmaschiges Filter hat.
EP19820401091 1981-06-30 1982-06-15 Geschirrspüler mit selbstreinigendem Sieb Expired EP0068974B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8112840 1981-06-30
FR8112840A FR2508304B1 (fr) 1981-06-30 1981-06-30 Lave-vaisselle a filtre de recyclage automatiquement nettoye

Publications (2)

Publication Number Publication Date
EP0068974A1 EP0068974A1 (de) 1983-01-05
EP0068974B1 true EP0068974B1 (de) 1986-03-05

Family

ID=9260025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820401091 Expired EP0068974B1 (de) 1981-06-30 1982-06-15 Geschirrspüler mit selbstreinigendem Sieb

Country Status (4)

Country Link
EP (1) EP0068974B1 (de)
DE (1) DE3269602D1 (de)
ES (1) ES8305575A1 (de)
FR (1) FR2508304B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher

Families Citing this family (37)

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IT8434002U1 (it) * 1984-01-05 1985-07-05 Zanussi A Spa Industrie Macchina lavastoviglie con filtro salva pompa autopulente
IT209170Z2 (it) * 1985-11-13 1988-09-16 Zanussi Elettrodomestici Macchina lavastoviglie con filtro di ricircolo autopulente.
IT1232575B (it) * 1989-02-13 1992-02-26 Merloni Elettrodomestici Spa Macchina lavastoviglie perfezionata
WO1991008700A1 (en) * 1989-12-20 1991-06-27 Vulcan Australia Limited Filter screen assembly for dishwasher
IT225641Y1 (it) * 1991-04-08 1997-01-13 Zanussi Elettrodomestici Lavastoviglie con filtro di ricircolo autopulente
US5333631A (en) * 1993-05-04 1994-08-02 White Consolidated Industries, Inc. Cleaning wash-arm for dishwashing filter
DE10208992B4 (de) * 2002-02-28 2007-06-28 Whirlpool Corp., Benton Harbor Filtersieb für ein flüssigkeitsführendes Haushaltsgerät, insbesondere eine Geschirrspülmaschine
ES2292692T3 (es) * 2002-11-28 2008-03-16 Whirlpool Corporation Lavavajillas con filtro plano que comprende zonas con dimensiones de agujero de flujo diferentes.
EP2179685B1 (de) * 2008-10-23 2013-01-09 Electrolux Home Products Corporation N.V. Geschirrspüler
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US20120318296A1 (en) 2011-06-20 2012-12-20 Whirlpool Corporation Ultra micron filter for a dishwasher
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
AU2016295237B2 (en) 2015-07-23 2018-11-15 Lg Electronics Inc. Dishwasher
DE102019211400B3 (de) 2019-07-31 2020-07-23 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine
DE102019211433A1 (de) * 2019-07-31 2021-02-04 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine
DE102023210426A1 (de) * 2023-10-23 2025-04-24 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine
DE102023210432A1 (de) * 2023-10-23 2025-04-24 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine und Verfahren
DE102023210425A1 (de) * 2023-10-23 2025-04-24 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine

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US3709236A (en) * 1969-12-08 1973-01-09 Jenn Air Corp Dishwasher
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US4038103A (en) * 1976-07-27 1977-07-26 Hobart Corporation Dishwasher filter flushing system
DE2737440A1 (de) * 1977-08-19 1979-02-22 Licentia Gmbh Geschirrspuelmaschine
AU527001B2 (en) * 1978-12-29 1983-02-10 Hobart International Inc. Warewasher bypass soil collector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US10058227B2 (en) 2011-06-20 2018-08-28 Whirlpool Corporation Filter assembly for a dishwasher

Also Published As

Publication number Publication date
ES513531A0 (es) 1983-04-16
ES8305575A1 (es) 1983-04-16
FR2508304B1 (fr) 1986-02-07
EP0068974A1 (de) 1983-01-05
FR2508304A1 (fr) 1982-12-31
DE3269602D1 (en) 1986-04-10

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