EP2939585B1 - Geschirrreinigungsverfahren - Google Patents

Geschirrreinigungsverfahren Download PDF

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Publication number
EP2939585B1
EP2939585B1 EP15164721.1A EP15164721A EP2939585B1 EP 2939585 B1 EP2939585 B1 EP 2939585B1 EP 15164721 A EP15164721 A EP 15164721A EP 2939585 B1 EP2939585 B1 EP 2939585B1
Authority
EP
European Patent Office
Prior art keywords
conduit
washing
spraying
minutes
comprised
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
EP15164721.1A
Other languages
English (en)
French (fr)
Other versions
EP2939585A1 (de
Inventor
Silvia Barus
Gianluca Benedetto
Marco Ten Bok
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.)
Whirlpool EMEA SpA
Original Assignee
Whirlpool EMEA 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
Priority claimed from IT000092A external-priority patent/ITPR20120092A1/it
Priority claimed from IT000093A external-priority patent/ITPR20120093A1/it
Application filed by Whirlpool EMEA SpA filed Critical Whirlpool EMEA SpA
Publication of EP2939585A1 publication Critical patent/EP2939585A1/de
Application granted granted Critical
Publication of EP2939585B1 publication Critical patent/EP2939585B1/de
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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • 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
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/12—Water temperature
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/20—Time, e.g. elapsed operating time
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/04—Water pressure or flow rate
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction

Definitions

  • the present invention relates to a dish washing method.
  • DE102011075020 discloses a washing machine.
  • no. 1 indicates a dishwasher comprising a box-shaped casing 2, substantially in the shape of a parallelepiped, defining a washing compartment 3. Inside the washing compartment 3 are two racks 4, 5 destined for housing the dishes to be washed.
  • racks 4, 5 are the only racks present in the dishwasher 1.
  • the expression 'racks' in the course of this treatment is intended to mean support means for the dishes to be washed which slide along guides formed along the box-shaped casing 2.
  • these racks are perforated, being obtained by intersection of filiform elements. They have overall dimensions which almost completely occupy a horizontal level of the box-shaped casing 2.
  • Any accessories applicable to said racks to increase their load capacity or make them suitable for housing particular types of dishes are to be considered an integral part of said racks and are not to be considered distinct racks.
  • the dishwasher 1 comprises spraying means 6, 7, 8 arranged inside the washing compartment 3 and capable of spraying washing liquid on the dishes contained in the two racks 4, 5.
  • the washing liquid comprises water and detergents (cleaning agents, finisher etc.). After coming into contact with the dishes to be washed, the washing liquid also comprises the dirt removed from the dishes to be washed (for example residues of food or condiments).
  • the dishwasher 1 comprises furthermore conveying means 9 suitable for connecting the washing compartment 3 to the spraying means 6, 7, 8.
  • the conveying means 9 connect the bottom 2a of the box-shaped casing 2 to the spraying means 6, 7, 8.
  • the dishwasher 1 comprises a motorised pump 10 operatively active on the conveying means 9 to take the washing liquid from the washing compartment 3 and send it to the spraying means 6, 7, 8.
  • the washing liquid sprayed by the spraying means 6, 7, 8 builds up by gravity on the bottom 2a of the box-shaped casing 2, where it is picked up by the motorised pump 10 and sent again to the spraying means 6, 7, 8 via the conveying means.
  • the spraying means 6, 7, 8 comprise first bottom spraying means 6, second bottom spraying means 7 and top spraying means 8.
  • the first bottom spraying means 6 are situated below the lower rack 4.
  • the first bottom spraying means 7 are situated below the upper rack 5.
  • the top spraying means 8 are positioned above the upper rack 5.
  • the top spraying means 8 consist of a sprinkler comprising an impeller 12, a ring nut 13 and a cage 14 attachable to the ring 13 in such a way as to form a housing receptacle 15 for the impeller 12.
  • the cage 14 has a pin 16 having an end 16a of conical shape.
  • the impeller 12 has a through hole 17 in such a way as to be able to be rotatably mounted on the pin 16 of the cage 14.
  • the sprinkler 8 is attached to the conveying means 9 by rotation of the ring nut 13 through a quarter of a turn.
  • the dishwasher 1 comprises a selector 11 operatively active over the conveying means 9 to selectively open a first route 9a towards the first bottom spraying means 6 or a second route 9b towards the second bottom spraying means 7 or a third route 9c towards the top spraying means 8 in such a way that the washing liquid is sprayed from the selected sprayer.
  • the motorised pump 10 operates at a rotation speed comprised between 2300 and 2600 revolutions per minute.
  • the motorised pump 10 operates at between 1500 and 2500 revolutions per minute.
  • the selector 11 is formed of a fixed disc and a rotating disc superimposed.
  • This method is used both in ECO washing programmes (or cycles) and in normal programmes (i.e. non-ECO).
  • the proposed procedure is used for washing dishes positioned in the racks 4, 5 in such a way as to have the concavity facing downwards.
  • the method comprises a first step of top spraying of said upper rack 5 via the top spraying means 8 positioned above said upper rack 5 and supplied via the third conduit 9c.
  • the third conduit 9c connects the spraying means 8 to said selector 11.
  • the step of top spraying of said upper rack 5 comprises a step of removing the dirt which, during the change from the bottom spraying of the lower rack 4 to the bottom spraying the upper rack 5 or vice versa, built up in said third conduit 9c.
  • the selector 11 comprises a fixed disc comprising at least one hole and a movable disc comprising a plurality of holes. Depending on which hole in the movable disc is superimposed on the hole in the fixed disc, the first or second or third conduit 9a, 9b, 9c is supplied.
  • the movable disc rotates and during this rotation the hole in the fixed disc is superimposed for a brief space of time on the hole which supplies the third conduit 9c, causing the introduction of a small quantity of water (often dirty) which stagnates in the third conduit 9c.
  • Bottom spraying of the lower rack 4 and bottom spraying of the upper rack 5 are carried out alternately several consecutive times in such a way as to form a step of bottom spraying.
  • the step of removing the dirt built up in the third conduit 9c is performed before and/or after this step of bottom washing. It is performed at the end of a ramping up of the heating of the washing liquid. It can also be performed after a long step (for example greater than 30 minutes) in which said step of bottom washing is performed.
  • the duration of the step of bottom washing is greater by an order of magnitude than the duration of the step of removing the dirt built up in the third conduit 9c.
  • both the bottom spraying of the lower rack 4 and the bottom spraying of the upper rack 5 have a duration comprised between about one minute and about five minutes, while the bottom washing (which is given by the multiple alternation of these sprayings) has a duration comprised between about twelve minutes and fifty-six minutes.
  • the step of removing the dirt built up in the third conduit 9c has a duration comprised between about one minute and about five minutes.
  • the embodiment here described and illustrated refers to a programme or cycle of ECO type thus composed.
  • the washing liquid is loaded into the washing compartment 3 during a first loading step.
  • the step of bottom washing is actuated for a duration comprised between 25 and 40 minutes during which the temperature of the washing liquid is kept constant between 20 and 25 °C for a first interval comprised between 10 and 20 minutes (see reference “a” in figure 5 ) and is heated up to a temperature comprised between 45° and 55°C in a second interval of duration comprised between 10 and 20 minutes (see reference “b" in figure 5 ).
  • the step of bottom washing is performed again for a total duration comprised between 50 and 60 minutes during which the temperature of the washing liquid is kept constant (see reference “d” in figure 5 ).
  • the ECO cycle comprises furthermore the so-called “cold rinsing” (see reference “f”) and the so-called “hot rinsing” (see reference “g”), which are not explained in detail because they do not constitute the subject of the patent.
  • the step of removing the dirt from the main conduit can be performed even during the "cold rinsing" or during the "hot rinsing".
  • the sprinkler makes it possible to complete the washing of the dishes by spraying from above (the other sprayers are positioned below the relative racks).

Claims (6)

  1. Verfahren zur Reinigung des Geschirrs, das in einem Spülraum (2) platziert wird, der nur zwei Geschirrkörbe (4, 5) aufnimmt, umfassend die Schritte:
    - Sprühen nach unten eines unteren Geschirrkorbs (4) durch erste untere Sprühmittel (6);
    - Sprühen nach unten eines oberen Geschirrkorbs (5), der oberhalb des unteren Geschirrkorbs (4) positioniert ist, durch zweite untere Sprühmittel (7);
    - Betätigen eines Selektors (11), um die Zuführung einer Waschflüssigkeit zumindest zwischen einer ersten Leitung (9a), die die ersten Sprühmittel (6) versorgt, und eine zweite Leitung (9b), die die zweiten Sprühmittel (7) versorgt, zu schalten;
    - Sprühen nach oben des oberen Geschirrkorbs (5) durch obere Sprühmittel (8), die oberhalb des oberen Geschirrkorbs (5) positioniert sind und durch eine dritte Leitung (9c) versorgt werden, die sie mit dem Selektor (11) verbindet;
    dadurch gekennzeichnet, dass der Selektor (11) aus einer festen Scheibe und einer überlagerten rotierenden Scheibe gebildet ist, je nachdem, welches Loch in der beweglichen Scheibe dem Loch in der festen Scheibe überlagert ist, wird die erste oder zweite oder dritte Leitung (9a, 9b, 9c) versorgt, wobei der Schritt des Sprühens nach oben des oberen Geschirrkorbs (5) einen Schritt des Entfernens des Schmutzes umfasst, der sich während des Wechsels vom Sprühen nach unten des unteren Geschirrkorbs (4) zum Sprühen nach unten des oberen Geschirrkorbs (5) oder umgekehrt, in der dritten Leitung (9c) abgelagert hat;
    wobei der Schritt des Entfernens des in der dritten Leitung (9c) abgelagerten Schmutzes am Ende eines Anstiegs der Erwärmung der Waschflüssigkeit durchgeführt wird.
  2. Verfahren nach Anspruch 1, wobei im Schritt des Sprühens nach unten des unteren Geschirrkorbs (4) und der Schritt des Sprühens nach unten des oberen Geschirrkorbs (5) ein paar aufeinanderfolgende Zeiten sich abwechseln, um einen Schritt der unteren Reinigung zu definieren, wobei der Schritt des Entfernens des in der dritten Leitung (9c) abgelagerten Schmutzes zumindest nach dem Schritt der unteren Reinigung durchgeführt wird.
  3. Verfahren nach Anspruch 2, wobei die Dauer des Schrittes der unteren Reinigung um eine Größenordnung größer als die Dauer des Schrittes des Entfernens des in der dritten Leitung (9c) abgelagerten Schmutzes ist.
  4. Verfahren nach Anspruch 2 oder 3, wobei sowohl das Sprühen nach unten des unteren Geschirrkorbs (4) als auch das Sprühen nach unten des oberen Geschirrkorbs (5) eine Dauer zwischen etwa einer Minute und etwa fünf Minuten haben, während die untere Reinigung, die durch den mehrfachen Wechsel dieser Sprühungen gegeben ist, eine Dauer zwischen etwa zwölf Minuten und sechsundfünfzig Minuten hat.
  5. Verfahren nach einem der Ansprüche 2 bis 4, wobei der Schritt des Entfernens des in der dritten Leitung (9c) abgelagerten Schmutzes eine Dauer zwischen etwa einer Minute und etwa fünf Minuten hat.
  6. Verfahren nach einem der Ansprüche 2 bis 5, wobei der Schritt der unteren Reinigung für eine Gesamtdauer zwischen 25 und 40 Minuten betrieben wird, während der die Temperatur der Waschflüssigkeit zwischen 20 und 25 °C konstant für ein erstes Zeitintervall zwischen 10 und 20 Minuten gehalten wird und wird auf eine Temperatur zwischen 45 und 55 °C für ein zweites Zeitintervall zwischen 10 und 20 Minuten erwärmt wird, wobei der Schritt der unteren Reinigung von dem Schritt des Entfernens des in der dritten Leitung (9c) abgelagerten Schmutzes, für eine Gesamtdauer zwischen 1 und 5 Minuten, von einem weiteren Schritt der unteren Reinigung für eine Gesamtdauer zwischen 50 und 60 Minuten, während der die Temperatur der Waschflüssigkeit konstant gehalten wird, und von einem weiteren Schritt des Entfernens des in der dritten Leitung (9c) abgelagerten Schmutzes für eine Dauer zwischen 1 und 5 Minuten gefolgt wird.
EP15164721.1A 2012-12-28 2013-12-27 Geschirrreinigungsverfahren Not-in-force EP2939585B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000092A ITPR20120092A1 (it) 2012-12-28 2012-12-28 Metodo di lavaggio di stoviglie.
IT000093A ITPR20120093A1 (it) 2012-12-28 2012-12-28 Lavastoviglie e procedimento per lavare stoviglie.
EP13199631.6A EP2756788B1 (de) 2012-12-28 2013-12-27 Geschirrreinigungsverfahren

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP13199631.6A Division-Into EP2756788B1 (de) 2012-12-28 2013-12-27 Geschirrreinigungsverfahren
EP13199631.6A Division EP2756788B1 (de) 2012-12-28 2013-12-27 Geschirrreinigungsverfahren

Publications (2)

Publication Number Publication Date
EP2939585A1 EP2939585A1 (de) 2015-11-04
EP2939585B1 true EP2939585B1 (de) 2017-09-20

Family

ID=49767055

Family Applications (3)

Application Number Title Priority Date Filing Date
EP15164721.1A Not-in-force EP2939585B1 (de) 2012-12-28 2013-12-27 Geschirrreinigungsverfahren
EP15164728.6A Not-in-force EP2949256B1 (de) 2012-12-28 2013-12-27 Geschirrspüler
EP13199631.6A Active EP2756788B1 (de) 2012-12-28 2013-12-27 Geschirrreinigungsverfahren

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP15164728.6A Not-in-force EP2949256B1 (de) 2012-12-28 2013-12-27 Geschirrspüler
EP13199631.6A Active EP2756788B1 (de) 2012-12-28 2013-12-27 Geschirrreinigungsverfahren

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EP (3) EP2939585B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160353966A1 (en) * 2015-06-05 2016-12-08 Whirlpool Corporation Automatic dishwasher
CN110664347B (zh) * 2018-07-02 2023-04-18 青岛海尔洗碗机有限公司 一种洗碗机的喷淋装置
CN113520262B (zh) * 2020-04-14 2022-11-18 宁波方太厨具有限公司 一种柜式清洗机

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE2911005A1 (de) * 1979-03-21 1980-09-25 Licentia Gmbh Verfahren zum reinigen von geschirr in einer haushaltgeschirrspuelmaschine und haushaltgeschirrspuelmaschine zur durchfuehrung des verfahrens
IT1311215B1 (it) * 1999-03-29 2002-03-04 Electrolux Zanussi Elettrodome Lavastoviglie con mezzi di spruzzatura perfezionati
DE10134917B4 (de) * 2001-07-18 2006-03-16 AEG Hausgeräte GmbH Geschirrspülmaschine mit veränderbarer Flüssigkeitsverteilung
DE102005013127B4 (de) * 2004-11-12 2007-08-23 Aweco Appliance Systems Gmbh & Co. Kg Sprühvorrichtung zum Versprühen einer Betriebsflüssigkeit
KR101556124B1 (ko) * 2008-08-21 2015-09-30 엘지전자 주식회사 식기세척기 및 식기세척기의 제어방법
US8939162B2 (en) * 2010-03-30 2015-01-27 Bsh Home Appliances Corporation Variable spray-pattern in water-using cleaning appliances
DE102011075020A1 (de) * 2011-04-29 2012-10-31 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
EP2756788A3 (de) 2014-10-29
EP2756788B1 (de) 2020-03-25
EP2939585A1 (de) 2015-11-04
EP2949256A1 (de) 2015-12-02
EP2756788A2 (de) 2014-07-23
EP2949256B1 (de) 2017-08-09

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