EP0291713A1 - Method for washing dishes and domestic dishwasher using said method - Google Patents

Method for washing dishes and domestic dishwasher using said method Download PDF

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Publication number
EP0291713A1
EP0291713A1 EP88106345A EP88106345A EP0291713A1 EP 0291713 A1 EP0291713 A1 EP 0291713A1 EP 88106345 A EP88106345 A EP 88106345A EP 88106345 A EP88106345 A EP 88106345A EP 0291713 A1 EP0291713 A1 EP 0291713A1
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EP
European Patent Office
Prior art keywords
rinsing
cleaning
dishes
steam
programs
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.)
Withdrawn
Application number
EP88106345A
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German (de)
French (fr)
Inventor
Walter Dipl.-Ing. Spitzer
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0291713A1 publication Critical patent/EP0291713A1/en
Withdrawn legal-status Critical Current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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • 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
    • A47L15/4234—Steam generating arrangements
    • 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
    • A47L2601/04—Steam

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a household dishwasher for performing this method.
  • programs can be selected via a program control device, which programs can be composed of a pre-rinse cycle, cleaning cycle, intermediate rinse cycle, rinse cycle and drying cycle.
  • a program control device which programs can be composed of a pre-rinse cycle, cleaning cycle, intermediate rinse cycle, rinse cycle and drying cycle.
  • cleaning follows, consisting of the fresh water supply of about six to ten liters of cold water, heating to 55 or 65 ° C and addition of a cleaning agent, circulation of the cleaning liquid and preferably gradual pumping out of part of the cleaning liquid and replacement with cold water, which gradually cools the hot liquor and avoids temperature stress in the dishes.
  • the lye is pumped out.
  • the intermediate rinsing begins, with cold water in several steps, each consisting of a water inlet of about five to ten liters of fresh water, circulating and pumping, rinsing the loosened dirt particles from the dishes and pumping them out with the water.
  • a fresh water quantity of about five to ten liters flows back into the rinse container, to which a rinse aid is added.
  • the fresh water mixed with the rinse aid is heated to about 65 to 75 ° C and circulated. Then the pumping takes place and drying begins due to the inherent heat of the dishes and, if necessary, the additional radiant heat of an electric heater.
  • the sub-program pre-rinse can be supplemented or replaced by a sub-program pre-cleaning for cookware, pots or the like, this sub-program pre-cleaning from a water supply step for two to five liters Water, a heating step to 30 ° C to 60 ° C, a cleaning agent addition and a circulation of the rinsing liquid by means of the spray device assigned to the cookware, driven at a reduced speed, which has nozzles spraying against the cookware with increased spray pressure, some of which in the other program steps or are completely closable.
  • the invention has for its object to improve the known methods for cleaning heavily soiled dishes in household dishwashers.

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  • Washing And Drying Of Tableware (AREA)

Abstract

The method for washing very dirty crockery comprises the partial programs prewash, wash, intermediate rinse, clear rinse and dry. It is distinguished by the fact that a further partial program can be selected before or instead of the partial program prewash for washing very dirty crockery, in which further partial program steam is applied to the crockery in a softening phase.

Description

Die Erfindnung betrifft ein Verfahren gemäß dem Oberbegriff des Patentanspruches 1 sowie eine Haushalt-Geschirrspülmaschine zur Durchführung dieses Verfahrens.The invention relates to a method according to the preamble of claim 1 and a household dishwasher for performing this method.

Bei den bekannten Haushalt-Geschirrspülmaschinen sind über ein Programmsteuerge­rät Programme wählbar, die aus Vorspülzyklus, Reinigungszyklus, Zwischenspülzyklus, Klarspülzyklus und Trockenzyklus zusammensetzbar sind. Während des Vorspülens fließen dem Spülbehälter etwa sechs bis zehn Liter Frischwasser zu, das durch die Umwälzpumpe und über Sprüheinrichtungen auf das Geschirr gesprüht und nach eini­ger Zeit mit den abgelösten Speiserestern abgepumpt wird. Nach dem auch ausblend­baren Vorspülen schließt sich das Reinigen an, bestehend aus der Frischwasserzufuhr von etwa sechs bis zehn Liter Kaltwasser, aus Aufheizen auf 55 oder 65°C und Zu­gabe eines Reinigungsmittels, aus Umwälzen der Reinigungsflüssigkeit und vorzugs­weise stufenweisen Abpumpen eines Teils der Reinigungsflüssigkeit und Ersetzen durch Kaltwasser, wodurch die heiße Lauge allmählich abgekühlt wird und Tempera­turspannungen im Geschirr vermieden werden. Am Ende des Reinigungszyklus wird die Lauge abgepumpt. Nach dem Entleeren des Spülbehälters beginnt das Zwi­schenspülen, dabei werden mit Kaltwasser in mehreren Schritten, bestehend aus je­weils einem Wassereinlaß von etwa fünf bis zehn Liter Frischwasser, Umwälzen und Abpumpen, die gelösten Schmutzteilchen vom Geschirr abgespült und mit dem Was­ser abgepumpt. Zu Beginn des nach den Zwischenspülgängen sich anschließenden Klarspülzyklus fließt wieder eine Frischwassermenge von etwa fünf bis zehn Litern dem Spülbehälter zu, der ein Klarspülmittel zudosiert wird. Das mit dem Klarspül­mittel versetzte Frischwasser wird auf etwa 65 bis 75°C erwärmt und umgewälzt. Anschließend erfolgt das Abpumpen und es beginnt das Trocknen durch die Eigen­wärme des Geschirrs und gegebenenfalls durch die zusätzliche Strahlungswärme ei­ner elektrischen Heizung.In the known household dishwashers, programs can be selected via a program control device, which programs can be composed of a pre-rinse cycle, cleaning cycle, intermediate rinse cycle, rinse cycle and drying cycle. During the pre-rinsing, about six to ten liters of fresh water flow into the rinsing tank Circulation pump and sprayed onto the dishes and then pumped out with the loosened food residues after some time. After the pre-rinsing, which can also be hidden, cleaning follows, consisting of the fresh water supply of about six to ten liters of cold water, heating to 55 or 65 ° C and addition of a cleaning agent, circulation of the cleaning liquid and preferably gradual pumping out of part of the cleaning liquid and replacement with cold water, which gradually cools the hot liquor and avoids temperature stress in the dishes. At the end of the cleaning cycle, the lye is pumped out. After emptying the rinsing container, the intermediate rinsing begins, with cold water in several steps, each consisting of a water inlet of about five to ten liters of fresh water, circulating and pumping, rinsing the loosened dirt particles from the dishes and pumping them out with the water. At the beginning of the rinse cycle that follows after the intermediate rinse cycles, a fresh water quantity of about five to ten liters flows back into the rinse container, to which a rinse aid is added. The fresh water mixed with the rinse aid is heated to about 65 to 75 ° C and circulated. Then the pumping takes place and drying begins due to the inherent heat of the dishes and, if necessary, the additional radiant heat of an electric heater.

Um stark verschmutztes Kochgeschirr, wie Töpfe und Pfannen in einer Haushalt-Ge­schirrspülmaschine zu reinigen, ist es bekannt, die Kochgeschirre der Einwirkung ei­ner Lösung eines Reinigungsmittels im Wasser mit einer Konzentration von minde­stens etwa 2,65 Gramm pro Liter bei etwa 80°C und einem Höchstwert von etwa 99°C während einer Zeitspanne von etwa 75 min bis etwa 180 min auszusetzen, wo­bei die Kochgeschirre mit auf eine Temperatur von etwa 93°C erhitztem Wasser ab­gespült werden (DE-OS 21 17 082). Die Anwendung dieses energieaufwendigen Lang­zeit-Verfahrens ist jedoch nur möglich, wenn die Geschirrkörbe ausschließlich mit unempfindlichem Kochgeschirr beladen werden. Kochgeschirr in einer Menge, die zum wirtschaftlichen Beladen einer Geschirrspülmaschine ausreicht, fällt in der Re­gel in den durchschnittlichen Haushalten innerhalb begrenzbarer Zeiträume nicht an.In order to clean heavily soiled cookware such as pots and pans in a household dishwasher, it is known to expose the cookware to the action of a solution of a detergent in water with a concentration of at least about 2.65 grams per liter at about 80 ° C and one Suspend maximum value of about 99 ° C for a period of about 75 minutes to about 180 minutes, the dishes being rinsed with water heated to a temperature of about 93 ° C (DE-OS 21 17 082). However, the use of this energy-intensive long-term process is only possible if the crockery baskets are only loaded with insensitive cookware. Cookware in an amount sufficient to economically load a dishwasher is generally not available in the average household within a limited period of time.

Ferner ist bei einem Verfahren zum Reinigen von Geschirr bekannt (DE-OS 33 30 537), daß das Teilprogramm Vorspülen durch ein Teilprogramm Vorreinigen für Kochgeschirr, Töpfe oder dergleichen ergänzbar oder ersetzbar ist, wobei dieses Teilprogramm Vorreinigen aus einem Wasserzulaufschritt für zwei bis fünf Liter Wasser, einem Aufheizschritt auf 30°C bis 60°C, einer Reinigerzugabe und einem Umwälzen der Spülflüssigkeit über die dem Kochgeschirr zugeordnete, mit verminder­ter Drehzahl angetriebene Sprühvorrichtung besteht, die mit erhöhtem Sprühdruck gegen das Kochgeschirr sprühende Düsen aufweist, welche in den übrigen Programm­schritten teilweise oder ganz verschließbar sind.It is also known in a method for cleaning dishes (DE-OS 33 30 537) that the sub-program pre-rinse can be supplemented or replaced by a sub-program pre-cleaning for cookware, pots or the like, this sub-program pre-cleaning from a water supply step for two to five liters Water, a heating step to 30 ° C to 60 ° C, a cleaning agent addition and a circulation of the rinsing liquid by means of the spray device assigned to the cookware, driven at a reduced speed, which has nozzles spraying against the cookware with increased spray pressure, some of which in the other program steps or are completely closable.

Zur Desinfektion des Geschirrs in Geschirrspülmaschinen für Krankenhäuser ist es schließlich bei diesen gewerblichen Maschinen bekannt, zum Desinfizieren heißen Dampf einzusetzen (DE-AS 12 26 248).To disinfect the dishes in dishwashers for hospitals, it is finally known in these commercial machines to use hot steam for disinfecting (DE-AS 12 26 248).

Der Erfindung liegt die Aufgabe zugrunde, die bekannten Verfahren zum Reinigen von stark angeschmutztem Geschirr in Haushalt-Geschirrspülmaschinen zu verbessern.The invention has for its object to improve the known methods for cleaning heavily soiled dishes in household dishwashers.

Die Lösung dieser Aufgabe erfolgt gemäß der Erfindung durch die kennzeichnenden Merkmale des Patentanspruches 1 bzw. der Ansprüche 2 oder 3.This object is achieved according to the invention by the characterizing features of patent claim 1 or claims 2 or 3.

Nach dem erfindungsgemäßen Reinigungsverfahren brauchen keine mechanischen Hilfsmittel zum Reinigen des Geschirrs eingesetzt werden. Auch auf umweltbela­stende chemische Reinigungsmittelzusätze kann, neben dem üblichen Reiniger und Klarspüler verzichtet werden. Besonders vorteilhaft ist es, wenn im unteren Ge­schirrkorb eine besondere Abstellfläche für die stark angeschmutzten Kochtöpfe vor­gesehen ist. Die mit der Öffnung nach unten abgestellten Kochtöpfe werden dann, ohne daß das übrige, gegebenenfalls feinere Geschirr nachteilig behandelt wird, aus gesonderten Düsen mit Wasserdampf beaufschlagt. Dadurch werden die angetrockne­ten Speisereste aufgeweicht und können danach im ablaufenden wieteren Spülpro­gramm sauber abgetragen werden.According to the cleaning method according to the invention, no mechanical aids need to be used for cleaning the dishes. In addition to the usual detergent and rinse aid, it is also possible to dispense with environmentally harmful chemical detergent additives. It is particularly advantageous if a special storage surface for the heavily soiled saucepans is provided in the lower crockery basket. The pots placed with the opening facing downwards are then subjected to water vapor from separate nozzles without the remaining, possibly finer dishes being treated disadvantageously. As a result, the dried-on food remnants are softened and can then be removed in the subsequent washing program.

Claims (3)

1. Verfahren zum Reinigen von Geschirr in Spülbehältern von Haushalt-Geschirr­spülmaschinen, die mit aus den Teilprogrammen Vorspülen, Reinigen, Zwischen­spülen, Klarspülen und Trocknen wählbaren Programmen betätigbar sind, wobei in den Teilprogrammen Vorspülen, Reinigen, Zwischenspülen und Klarspülen die im Sumpf der Geschirrspülmaschinen vorhandenen Flüssigkeitsmengen mittels einer Umwälzpumpe Spritzeinrichtungen zugeführt und unter Beaufschlagung des Ge­schirrs umgewälzt werden,dadurch gekennzeichnet, daß zum Rei­nigen von stark angeschmutztem Geschirr, Kochtöpfen oder Besteck vor dem oder anstelle des Teilprogrammes Vorspülen ein wieteres Teilprogramm wählbar ist, in dem das Geschirr in einer Einweichphase mit Dampf beaufschlagt wird.1. A method for cleaning dishes in the rinsing containers of household dishwashers which can be operated with programs which can be selected from the sub-programs prewash, cleaning, intermediate rinsing, rinsing and drying, the sub-programs pre-rinsing, cleaning, intermediate rinsing and rinsing being those present in the sump of the dishwashers Amounts of liquid are supplied to a spraying device by means of a circulating pump and circulated while the dishes are acted on, characterized in that a further partial program can be selected for cleaning heavily soiled dishes, pots or cutlery before or instead of the pre-rinsing sub-program, in which the crockery is soaked with steam is applied. 2. Haushalt-Geschirrspülmaschine zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch eine Dampferzeugungsvorrichtung, einen Durchlauferhitzer, Rohrheizkörper oder dergleichen, der in der Einweichphase zur Dampferzeugung eingeschaltet ist, sowie ein Gebläse oder ein Pumpenlaufrad, das über Düsen oder die vorhandenen Spritzeinrichtungen Wasserdampf auf das stark angeschmutzte Geschirr fördert.2. Household dishwasher for performing the method according to claim 1, characterized by a steam generating device, a water heater, tubular heater or the like, which is switched on in the soaking phase for steam generation, and a blower or a pump impeller, the water via nozzles or the existing spray devices promotes heavily soiled dishes. 3. Haushalt-Geschirrspülmaschine nach Anspruch 2, dadurch gekennzeichnet, daß in einem unteren Geschirrkorb eine Abstellfläche für das stark angeschmutzte Ge­schirr vorgesehen und dieser Abstellfläche Dampfdüsen zugeordnet sind, die an die Dampferzeugungsvorrichtung sowie an ein Gebläse angeschlossen sind.3. Household dishwasher according to claim 2, characterized in that a storage area for the heavily soiled dishes is provided in a lower crockery basket and this storage surface is assigned steam nozzles which are connected to the steam generating device and to a blower.
EP88106345A 1987-05-20 1988-04-21 Method for washing dishes and domestic dishwasher using said method Withdrawn EP0291713A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3716952 1987-05-20
DE19873716952 DE3716952A1 (en) 1987-05-20 1987-05-20 METHOD FOR CLEANING DISHES AND DOMESTIC DISHWASHER FOR CARRYING OUT THE METHOD

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0468517A1 (en) * 1990-07-27 1992-01-29 Daikin Industries, Limited Method and apparatus for washing dishes
EP0487474A1 (en) * 1990-11-23 1992-05-27 Aktiebolaget Electrolux Method for transporting liquid in a dishwasher and a device for accomplishing the method
EP0593876A1 (en) * 1992-10-08 1994-04-27 Bosch-Siemens HausgerÀ¤te GmbH Apparatus for rinsing dishes
US7331356B2 (en) 2003-06-17 2008-02-19 Whirlpool Corporation Multiple wash zone dishwater
WO2008107636A1 (en) * 2007-03-07 2008-09-12 Reckitt Benckiser (Uk) Limited A free standing treatment device for a dishwasher
US7475696B2 (en) 2003-06-17 2009-01-13 Whirlpool Corporation Dishwasher having valved third-level sprayer
US7523758B2 (en) 2003-06-17 2009-04-28 Whirlpool Corporation Dishwasher having rotating zone wash sprayer
US7909936B2 (en) 2008-12-19 2011-03-22 Whirlpool Corporation Dishwasher final steam rinse method
US9119517B2 (en) 2011-10-17 2015-09-01 Whirlpool Corporation Dishwasher having spray manifold and method for controlling same
US9259138B2 (en) 2010-12-07 2016-02-16 Whirlpool Corporation Dishwasher with auxiliary spray system having removable sprayers
US9272314B2 (en) 2008-12-19 2016-03-01 Whirlpool Corporation Dishwasher steam purge method
US10076224B2 (en) 2014-01-20 2018-09-18 Whirlpool Corporation Dishwasher

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214188A1 (en) * 1992-04-30 1993-11-04 Licentia Gmbh Cleaning of badly soiled dishes in dishwasher - using intensive programme selectable in addition to normal programmable modes, such as pre-rinsing and cleaning modes, and introduced in form of softening mode directly before or after cleaning mode
DE4233936C2 (en) * 1992-10-08 1996-02-01 Bosch Siemens Hausgeraete Process for washing dishes
DE4414347B4 (en) * 1994-04-25 2007-07-05 BSH Bosch und Siemens Hausgeräte GmbH Method for operating a program-controlled dishwasher
DE29607515U1 (en) * 1996-04-25 1997-08-21 AEG Hausgeräte GmbH, 90429 Nürnberg Dishwasher with a washing compartment for arranging items to be cleaned

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US2664094A (en) * 1947-08-01 1953-12-29 Spragins John Harris Dishwasher
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US4279384A (en) * 1978-07-05 1981-07-21 Sharp Kabushiki Kaisha Steam generation in a dishwasher
US4366005A (en) * 1978-01-11 1982-12-28 Sharp Kabushiki Kaisha Steam washing in a dishwasher

Patent Citations (8)

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Publication number Priority date Publication date Assignee Title
DE512274C (en) * 1928-02-02 1930-11-08 Heinrich Schloemann Dish washing and drying device
US2664094A (en) * 1947-08-01 1953-12-29 Spragins John Harris Dishwasher
GB775975A (en) * 1952-10-02 1957-05-29 Simplex Electric Co Ltd Improvements relating to dish-washing apparatus
US3063459A (en) * 1959-05-25 1962-11-13 Gen Motors Corp Dishwashing machine
US3549294A (en) * 1970-03-25 1970-12-22 Hobart Corp Automatic dishwashing machine with soak cycle
US4366005A (en) * 1978-01-11 1982-12-28 Sharp Kabushiki Kaisha Steam washing in a dishwasher
US4279384A (en) * 1978-07-05 1981-07-21 Sharp Kabushiki Kaisha Steam generation in a dishwasher
EP0022879A1 (en) * 1979-07-18 1981-01-28 Elpag Ag Chur Dish washer

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0468517A1 (en) * 1990-07-27 1992-01-29 Daikin Industries, Limited Method and apparatus for washing dishes
US5427127A (en) * 1990-07-27 1995-06-27 Daikin Industries, Ltd. Method and apparatus for washing dishes, sticking inhibitor and rinsing assistant
EP0487474A1 (en) * 1990-11-23 1992-05-27 Aktiebolaget Electrolux Method for transporting liquid in a dishwasher and a device for accomplishing the method
EP0593876A1 (en) * 1992-10-08 1994-04-27 Bosch-Siemens HausgerÀ¤te GmbH Apparatus for rinsing dishes
US8454762B2 (en) 2003-06-17 2013-06-04 Whirlpool Corporation Dishwasher
US8454763B2 (en) 2003-06-17 2013-06-04 Whirlpool Corporation Dishwasher
US7445013B2 (en) 2003-06-17 2008-11-04 Whirlpool Corporation Multiple wash zone dishwasher
US7475696B2 (en) 2003-06-17 2009-01-13 Whirlpool Corporation Dishwasher having valved third-level sprayer
US7523758B2 (en) 2003-06-17 2009-04-28 Whirlpool Corporation Dishwasher having rotating zone wash sprayer
US7594513B2 (en) 2003-06-17 2009-09-29 Whirlpool Corporation Multiple wash zone dishwasher
US9615720B2 (en) 2003-06-17 2017-04-11 Whirlpool Corporation Dishwasher
US9474434B2 (en) 2003-06-17 2016-10-25 Whirlpool Corporation Dishwasher
US7331356B2 (en) 2003-06-17 2008-02-19 Whirlpool Corporation Multiple wash zone dishwater
US8753454B2 (en) 2003-06-17 2014-06-17 Whirlpool Corporation Dishwasher
US8764908B2 (en) 2003-06-17 2014-07-01 Whirlpool Corporation Method of controlling the operation of a dishwasher
US8801868B2 (en) 2003-06-17 2014-08-12 Whirlpool Corporation Dishwasher
US8808467B2 (en) 2003-06-17 2014-08-19 Whirlpool Corporation Dishwasher
US8871031B2 (en) 2003-06-17 2014-10-28 Whirlpool Corporation Dishwasher
US10238266B2 (en) 2003-06-17 2019-03-26 Whirlpool Corporation Dishwasher
WO2008107636A1 (en) * 2007-03-07 2008-09-12 Reckitt Benckiser (Uk) Limited A free standing treatment device for a dishwasher
US7909936B2 (en) 2008-12-19 2011-03-22 Whirlpool Corporation Dishwasher final steam rinse method
US9272314B2 (en) 2008-12-19 2016-03-01 Whirlpool Corporation Dishwasher steam purge method
US9259138B2 (en) 2010-12-07 2016-02-16 Whirlpool Corporation Dishwasher with auxiliary spray system having removable sprayers
US9119517B2 (en) 2011-10-17 2015-09-01 Whirlpool Corporation Dishwasher having spray manifold and method for controlling same
US10499787B2 (en) 2011-10-17 2019-12-10 Whirlpool Corporation Dishwasher having spray manifold
US10076224B2 (en) 2014-01-20 2018-09-18 Whirlpool Corporation Dishwasher

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