EP2308364B1 - Dishwasher having a program option and dishwashing cycle - Google Patents

Dishwasher having a program option and dishwashing cycle Download PDF

Info

Publication number
EP2308364B1
EP2308364B1 EP10010757A EP10010757A EP2308364B1 EP 2308364 B1 EP2308364 B1 EP 2308364B1 EP 10010757 A EP10010757 A EP 10010757A EP 10010757 A EP10010757 A EP 10010757A EP 2308364 B1 EP2308364 B1 EP 2308364B1
Authority
EP
European Patent Office
Prior art keywords
treatment
wash
washing liquid
washing
range
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
EP10010757A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2308364A1 (en
Inventor
Winfried Steiner
Rolf Stahlmann
Stefan Füglein
Friedrich Mack
Klaus-Martin Forst
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to PL10010757T priority Critical patent/PL2308364T3/pl
Publication of EP2308364A1 publication Critical patent/EP2308364A1/en
Application granted granted Critical
Publication of EP2308364B1 publication Critical patent/EP2308364B1/en
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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0007—Washing phases
    • 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
    • A47L15/0028—Washing phases
    • 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
    • A47L2301/00—Manual input in controlling methods of washing or rinsing machines for crockery or tableware, i.e. information entered by a user
    • A47L2301/04—Operation mode, e.g. delicate washing, economy washing, reduced time, sterilizing, water softener regenerating, odor eliminating or service
    • 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
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • 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
    • A47L2501/02—Water discharge, e.g. opening or closure of discharge valve
    • 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
    • A47L2501/06—Water heaters
    • 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
    • A47L2501/07—Consumable products, e.g. detergent, rinse aids or salt
    • 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
    • A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/02—Pressurised cleaning liquid delivered by a pump

Definitions

  • the invention relates to a dishwashing machine having a program option to modify the washing cycle, and to a dishwashing cycle which provides an optimized dishwashing procedure, in particular for heavily soiled articles to be washed in the dishwasher.
  • DE 199 57 243 A1 discloses a dishwasher having an option button for the use of a three-in-one combi-detergent tablet and a washing cycle specifically adapted to optimize the washing result using a three-in-one combi-detergent tablet.
  • the control unit modifies a standard dishwashing cycle including a pre-wash and a main wash in that an optimum time and temperature profile is used during the washing cycle.
  • a first component of the three-in-one tablet is dissolved during a cold pre-wash.
  • a second component is dissolved during a first portion of the main wash using a washing temperature of 40°C.
  • a third component is dissolved during a second portion of the main wash heating the washing liquid to a temperature of 60°C.
  • the dissolving of the components of the three-in-one tablet is optimized on the one side and on the other side the respective component is used at its optimum activation temperature such that the washing result on the articles placed in the dishwasher is also optimized.
  • the composition of such a tablet (amount of the detergent component and the resolving time of the three-in-one tablet) is selected for an average load of the dishwasher and an average soiling of the articles.
  • a pre-treatment detergent is added to a washing compartment of a dishwasher, which is particularly useful to clean heavily soiled articles to be washed, for example pots and pans where food remainders are partially burned in.
  • a pre-treatment wash or phase may be designated as 'power-booster phase' which provides a period of intense washing to remove soiling which in conventional dishwashing cycles is normally not completely removed.
  • the pre-treatment phase may be an introductory period during the main wash (claim 2) which provides optimum conditions for the pre-treatment detergent.
  • the main wash detergent is added with a delay from the start of the pre-treatment phase and it is best added when the pre-treatment phase has been finished and the main wash is resuming its normal conditions.
  • the pre-treatment wash or phase is only activated when an option for the dishwashing cycle has been selected, for example by the user pressing a corresponding pre-treatment option button at the console of the dishwasher.
  • the main wash detergent for the main wash or the master phase of the main wash is added to a washing compartment of the dishwasher as soon as the pre-treatment wash or phase is finished.
  • optimum washing conditions can also be set for the main wash detergent and there is no interference between the pre-treatment detergent and the main wash detergent, or the interference is at least minimized.
  • the temperature of the washing liquid is set in the range of 30°C-65°C, preferably in the range of 40°C-55°C, which is an optimum activity range, if for example the pre-treatment detergent comprises enzymes or a bleaching component.
  • the washing liquid temperature in a first time period during the pre-treatment wash is in the range of 30°C-50°C, in which for example enzymes have their optimum activity.
  • the temperature in a second time period the temperature is set in the range of 40°C-80°C, in which for example the bleaching component has its optimum activity. So two components of the pre-treatment detergent are activated separately and the mutual interferences, for example by destroying the enzymes at higher washing liquid temperatures, are avoided.
  • the washing liquid temperature is successively raised in distinct temperature steps or continuously raised.
  • a pre-wash phase of a conventional dishwashing cycle is preferably replaced by said pre-treatment wash when an option selection is made for pre-treatment.
  • the pre-treatment wash or phase is finished by completely or partially replacing the soiled washing liquid.
  • the degree of soiling of the washing liquid is preferably determined by a soiling detector so that the need and extent of replacing soiled washing liquid by fresh water is determined in dependence of the soiling degree.
  • an input unit includes a pre-treatment option, for example a pre-treatment button or a pre-treatment menu option by which the pre-treatment wash is activated.
  • a control unit of the dishwasher modifies the washing cycle to include a pre-treatment.wash or a pre-treatment phase which optimizes the washing result when using a pre-treatment detergent.
  • Fig. 1 illustrates a block diagram of a control section and functional components of the dishwasher.
  • a control unit 1 controls the operation of the dishwasher by sending control signals to the functional components of the dishwasher and by receiving detection signals from sensors of the dishwasher.
  • a draining pump 2 is activated by the control unit 1 to completely or partially drain the washing liquid out of.the washing compartment (not shown) of the dishwasher.
  • a water inlet valve 3 is opened and closed under the control of the control unit to fill fresh water into the washing compartment.
  • a heater 4 heats the washing liquid to a temperature set by the control unit 1 and as detected by a temperature sensor 7 which sends the temperature signal to the control unit.
  • a detergent for the main wash is supplied into the washing compartment by a first dispenser 5 and a pre-treatment detergent is supplied into the washing compartment by a second dispenser 6.
  • Both dispensers 5, 6 can have spring-biased lids which are released by a solenoid activated by the control unit 1.
  • the degree of soiling or the contamination of the washing liquid is detected by a turbidity sensor 8 which sends a respective turbidity signal to the control unit.
  • a conductivity sensor for detecting the degree of soiling of the washing liquid could be used instead.
  • Program options for the dishwashing cycle are set at an operation panel 9 which supplies the option selection signal(s) to the control unit and in turn shows the selected option or specific states of the dishwashing machine and the washing cycle state at a display (not shown) of the operation panel 9. If for example in addition to a standard washing cycle including a pre-wash, the pre-treatment option button has been pressed at the operation panel 9, the pre-wash is skipped from the washing cycle and instead of it a pre-treatment phase is performed prior to starting the main wash phase.
  • FIG. 2 An example of a washing cycle including a pre-treatment wash (P1+P2) and a main wash (M) which is succeeded by a rinsing (R) is depicted in Fig. 2 .
  • the pre-treatment detergent can be directly poured into the washing compartment, e.g. to the bottom of the washing compartment.
  • the first phase P1 of the pre-treatment period is continued from time to to t 1 , while the liquid temperature is heated to and held at temperature T 1 .
  • a second phase P2 of the pre-treatment period lasting from time t 1 to t 2 the washing liquid is heated from temperature T 1 to temperature T 2 by the heater 4.
  • the pre-treatment period is finished and depending on the signal of the turbidity sensor 8 washing liquid from the dishwasher is drained or not. For example, if there is no or only a low level of detected turbidity, no liquid is drained (saving liquid) and the main wash period M is continued with the washing liquid of the pre-treatment period, possibly by adding additional fresh water. If a medium level of soiling of the washing liquid is detected, only a part of the washing liquid is drained and replaced by fresh water. This case is depicted in Fig. 2 where in the time period t 2 to t 2 ' (phase E) washing liquid is drained and fresh water (from time t2') is successively refilled to the washing compartment.
  • the washing liquid is completely drained out of the washing compartment and fresh water is filled in up to a predetermined level.
  • the washing liquid during the main wash period M is heated to a third temperature T 3 and the articles placed in the washing compartment are conventionally cleaned.
  • the control unit 1 activates the first dispenser 5 to supply the main wash detergent into the washing compartment.
  • the main wash period M lasts from time t 2 to t 3 .
  • the rinsing period R starts by completely draining the washing liquid.
  • the rinsing period R is only shown in the starting phase and is performed in a conventional way.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)
EP10010757A 2004-11-20 2004-11-20 Dishwasher having a program option and dishwashing cycle Not-in-force EP2308364B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10010757T PL2308364T3 (pl) 2004-11-20 2004-11-20 Zmywarka mająca opcję programu oraz cykl zmywania

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04027623A EP1658803B1 (en) 2004-11-20 2004-11-20 Dishwasher having a program option and dishwashing cycle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP04027623.0 Division 2004-11-20

Publications (2)

Publication Number Publication Date
EP2308364A1 EP2308364A1 (en) 2011-04-13
EP2308364B1 true EP2308364B1 (en) 2012-06-27

Family

ID=34927473

Family Applications (3)

Application Number Title Priority Date Filing Date
EP10010757A Not-in-force EP2308364B1 (en) 2004-11-20 2004-11-20 Dishwasher having a program option and dishwashing cycle
EP04027623A Not-in-force EP1658803B1 (en) 2004-11-20 2004-11-20 Dishwasher having a program option and dishwashing cycle
EP10010756A Not-in-force EP2308363B1 (en) 2004-11-20 2004-11-20 Dishwasher having a program option and dishwashing cycle

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP04027623A Not-in-force EP1658803B1 (en) 2004-11-20 2004-11-20 Dishwasher having a program option and dishwashing cycle
EP10010756A Not-in-force EP2308363B1 (en) 2004-11-20 2004-11-20 Dishwasher having a program option and dishwashing cycle

Country Status (3)

Country Link
EP (3) EP2308364B1 (pl)
AT (1) ATE511382T1 (pl)
PL (2) PL2308363T3 (pl)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2120669B1 (en) * 2006-12-26 2012-03-28 Arçelik Anonim Sirketi Dishwasher with temperature increase for hygienic environment
DE102008040651B3 (de) * 2008-07-23 2010-04-15 BSH Bosch und Siemens Hausgeräte GmbH Spülverfahren für ein wasserführendes Haushaltsgerät, insbesondere eine Geschirrspülmaschine
CN105615800B (zh) * 2016-03-07 2019-02-15 佛山市顺德区美的洗涤电器制造有限公司 洗碗机的自动洗涤控制方法、装置和洗碗机
CN110693406B (zh) * 2018-07-09 2022-11-01 青岛海尔洗碗机有限公司 一种洗碗机洗涤控制方法及洗碗机
TR202021905A2 (tr) * 2020-12-28 2022-07-21 Arçeli̇k Anoni̇m Şi̇rketi̇ Opti̇mi̇zasyon sağlayan bi̇r bulaşik maki̇nesi̇

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE629473A (pl) * 1963-02-11 1900-01-01
DE4422128A1 (de) * 1994-06-24 1996-01-04 Licentia Gmbh Programmgesteuertes Haushaltsgerät
US5957144A (en) * 1998-05-18 1999-09-28 Maytag Corporation Turbidity sensor that interrupts drain motor and water valve
IT1301905B1 (it) * 1998-08-04 2000-07-07 Candy Spa Procedimento di lavaggio per lavastoviglie.
DE19957243A1 (de) 1999-11-27 2001-05-31 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einer Programmsteuerung und Verfahren zum Betreiben einer Geschirrspülmaschine

Also Published As

Publication number Publication date
EP1658803A1 (en) 2006-05-24
EP2308363B1 (en) 2012-06-27
EP2308364A1 (en) 2011-04-13
PL2308364T3 (pl) 2012-12-31
EP1658803B1 (en) 2011-06-01
PL2308363T3 (pl) 2012-12-31
EP2308363A1 (en) 2011-04-13
ATE511382T1 (de) 2011-06-15

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