EP0031016A1 - Method of washing laundry - Google Patents

Method of washing laundry Download PDF

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Publication number
EP0031016A1
EP0031016A1 EP80106860A EP80106860A EP0031016A1 EP 0031016 A1 EP0031016 A1 EP 0031016A1 EP 80106860 A EP80106860 A EP 80106860A EP 80106860 A EP80106860 A EP 80106860A EP 0031016 A1 EP0031016 A1 EP 0031016A1
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EP
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Prior art keywords
washing
program
fresh water
washing machine
laundry
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Granted
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EP80106860A
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German (de)
French (fr)
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EP0031016B2 (en
EP0031016B1 (en
Inventor
Lieselotte Brodzina
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BOSCH-SIEMENS HAUSGERAETE GMBH
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Individual
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • D06F2105/04—Water supply from separate hot and cold water inlets
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof

Definitions

  • the invention is based on a method for washing laundry in a program-controlled drum washing machine which is provided with connections for cold and warm fresh water.
  • Drum washing machines with connections for cold and warm fresh water are known (DE-PS 853 151).
  • the washing processes carried out therein do not differ in principle from washing processes which are used in drum washing machines which are only equipped with a cold water connection.
  • the laundry care specialist is obliged to set up a program section for washing normally soiled laundry, in which fresh water is supplied instead of only cold or only warm, so that the total washing time during this program section is approximately as long as in a corresponding program section with only cold fresh water water. Because the time to heat up the liquor at a higher initial temperature to the required washing temperature, for example 90 ° C., is shorter, this person skilled in the art will avoid the time lost here by extending the active washing time, which counts from the time the washing temperature is reached until the end of the program section , balance again so that the time expenditure factor is not neglected and leads to a disturbance of the optimum described by the Sinner circle.
  • the invention has for its object to develop a washing process mentioned at the outset which further increases the energy-saving effect which can be achieved by a shortened heating-up phase and which leads to a shortening of the overall duration of a washing program.
  • the results regarding cleaning effect, bleaching intensity and gentle washing should be achieved, if not exceeded, as far as possible compared to those program sections in which only cold fresh water runs in.
  • this object is achieved in that in a program section for normally soiled laundry in which warm fresh water flows in, in comparison to such a program section in which only cold fresh water flows in, the active washing time after reaching the desired washing temperature of the alkali is only approx. 0 is up to 40%.
  • the heating-up time is approximately 40 minutes when the washing machine is fully loaded. This is usually followed by an active washing time of 20 minutes. at.
  • the total time of this program section is therefore approx. 1 hour.
  • the person skilled in the art would also adhere to this total time in the case of a program section in which warm fresh water flows in, that is to say which is initiated at a higher initial temperature of approximately 50 ° C.
  • the washing ver driving time for this example is only about 20 minutes. Instead of the duration of the active washing time to 40 min. To extend the time to come back to a total time of approx.
  • the active washing time is shortened by the method according to the invention. For example, it is now only 0 to 8 minutes. (corresponding to 0 to 40% of usually 20 min.). The total time is now only about 25 minutes: a reduction of almost 60%. During this short period of time, less heat is naturally lost through radiation and transition to the environment, so that there is another energy saving effect.
  • the loss of mechanical action on the laundry in the program section in which warm fresh water flows in as a result of a shorter washing time compared to such a program section in which only cold fresh water flows in can be at least partially compensated for in an advantageous development of the method according to the invention by intensifying the rhythm of movement. As a result, the results regarding cleaning effect and bleaching intensity can be adapted to the respective wishes.
  • the method according to the invention can be carried out in a drum washing machine which, according to one embodiment of the invention, contains a program control device with a switching stage which can be switched on the output side to a set input of a timing control stage, the timing signal output of which is connected to an indexing stage of the program control device.
  • the switching stage can be activated by a step-up device and, when the desired washing temperature is reached, starts a timing stage, the output of which changes when the signal changes after a certain time, e.g. 4 min., The activity of this switching stage ends for the active washing process.
  • the program control device contains a switching stage which can be switched on the output side to a changeover input of a clock generator for the movement rhythm when the hot water flow has ended and the desired washing temperature has been reached.
  • a switching stage which can be switched on the output side to a changeover input of a clock generator for the movement rhythm when the hot water flow has ended and the desired washing temperature has been reached.
  • the program control unit can furthermore contain a switching stage which is connected to a switch for a magnetic valve controlling the flow of the warm fresh water or a further switching stage which is connected to a switch for a heating device which heats the wash liquor.
  • a switching stage which is connected to a switch for a magnetic valve controlling the flow of the warm fresh water
  • a further switching stage which is connected to a switch for a heating device which heats the wash liquor.
  • the unfilled diagram line in FIG. 1 shows from 0 to 40 minutes, calculated from the beginning of the program section intended for a rinse cycle, the heating phase in a program section in which only cold fresh water that has an initial temperature of 15 ° C. is supplied. After the continuous heating process has ended, the washing liquor has a temperature of 90 ° C as required. This is followed by a 20-minute active washing time, so that this program section ends after a total of 60 minutes and ends with the gradual inflow of cold water and cooling of the washing liquor.
  • the filled diagram line shows the temperature over time in the washing method according to the invention in the program section for normally soiled laundry, in which warm fresh water flows in.
  • the heating phase begins, the course of which is essentially parallel to the course of heating up cold water.
  • the heating-up phase has ended and a washing temperature of 90 ° C has been reached. This is followed by an active washing time of about 5 minutes, so that after 25 minutes. Total wash time within this program section the rinse cycle has ended.
  • FIG. 2 shows part of a block diagram for a program control device provided according to the invention in an automatically operating drum washing machine, which controls the washing method according to the invention. It contains switching stages 1, 2 and 3, which can activate switching stages 11, 12 and 13 one after the other. The output of the switching stage 11 controls the flip-flop 21 in a position in which it switches on the solenoid valve 30 connected to its output 210. This solenoid valve controls the hot water flow in line 31.
  • the switching stage 12 controls the bistable flip-flop 22 in a position in which its output 220 switches on the contactor 40 for the caustic heater 41.
  • the inflow line 31 opens into the tub 50. Furthermore, a water level sensor 51 and a temperature sensor 52 are arranged in the tub, the switches 53 and 54 of which emit suitable signals to the switching stage 13.
  • the switching stage 13 gives her Output signal to the side input of a time control stage 23, one output of which is connected to the sliding input of the advance stages 1 to 3. The output signal of the switching stage 13 is dependent on the signal of the switches 53 and 54.
  • the switch 53 is also connected to the reset input of the bistable multivibrator 21, which switches off the solenoid valve 30 again when the switch is reset.
  • the switch 54 is also connected to the reset input of the bistable multivibrator 22, which switches off the heating contactor 40 when the switch is reset.

Abstract

1. Method for the washing of laundry in a program-controlled drum washing machine which is provided with a respective connection for the cold and for the warm service water mains of a house-hold, characterized thereby, that in a program section for normally polluted laundry, during which warm service water runs in, the active washing time after attainment of the desired washing temperature of the liquor amounts to only about 0 to 40 % by comparison with such a program section, during which only cold service water runs in.

Description

Die Erfindung geht aus von einem Verfahren zum Waschen von Wäsche in einer programmgesteuerten Trommelwaschmaschine, die mit Anschlüssen für kaltes und warmes Frischwasser versehen ist.The invention is based on a method for washing laundry in a program-controlled drum washing machine which is provided with connections for cold and warm fresh water.

Es sind Trommelwaschmaschinen mit Anschlüssen für kaltes und warmes Frischwasser bekannt (DE-PS 853 151). Die darin ablaufenden Waschverfahren unterscheiden sich prinzipiell nicht von Waschverfahren, die in nur mit einem Kaltwasseranschluß ausgestatteten Trommelwaschmaschinen angewendet werden.Drum washing machines with connections for cold and warm fresh water are known (DE-PS 853 151). The washing processes carried out therein do not differ in principle from washing processes which are used in drum washing machines which are only equipped with a cold water connection.

Eine allgemein herrschende und bislang nicht ernsthaft bezweifelte Ansicht unter Fachleuten für Wäschepflege über die Zusammensetzung von optimalen Waschverfahren drückt sich im sogenannten Sinnerschen Kreis aus (vergleiche Dr.K.Lindner in Zeitschrift "Seifen-Öle-Fette-Wachse" 1964, Seiten 714 und 715), der eine Gesetzmäßigkeit zwischen den Anteilen der Einwirkungen der vier Faktoren Zeitaufwand, Temperatur, Mechanik und Chemie auf die zu waschende Wäsche im Sinne einer gleichbleibenden Summe der Einzelwirkungen beschreibt.A generally prevailing and as yet not seriously doubted view among experts in laundry care about the composition of optimal washing processes is expressed in the so-called Sinner circle (compare Dr.K. Lindner in the magazine "Seifen-Öle-Fette-Wwachs" 1964, pages 714 and 715 ), which describes a law between the proportions of the effects of the four factors of time, temperature, mechanics and chemistry on the laundry to be washed in the sense of a constant sum of the individual effects.

Ausgehend von dieser Gesetzmäßigkeit als Tatsache ist der Wäschepflege-Fachmann gehalten, einen Programmabschnitt zum Waschen normal verschmutzter Wäsche, bei dem anstelle von nur kaltem ausschließlich oder zusätzlich warmes,Frischwasser zuläuft, so einzurichten, daß die gesamte Waschzeit während dieses Programmabschnitts etwa so lang ist wie bei einem entsprechenden Programmabschnitt mit nur kalt zulaufendem Frischwasser. Da nämlich die Zeit zum Aufheizen der Flotte bei höherer Anfangstemperatur bis auf die erforderliche Waschtemperatur, z.B. 90°C, kürzer ist, wird dieser Fachmann die hier ausgefallene Zeit durch Verlängerung der aktiven Waschzeit, die vom Zeitpunkt des Erreichens der Waschtemperatur bis Ende des Programmabschnitts zählt, wieder ausgleichen, damit der Faktor Zeitaufwand nicht zu kurz kommt und zu einer Störung des durch den Sinnerschen Kreis beschriebenen Optimums führt.Based on this legality as a fact, the laundry care specialist is obliged to set up a program section for washing normally soiled laundry, in which fresh water is supplied instead of only cold or only warm, so that the total washing time during this program section is approximately as long as in a corresponding program section with only cold fresh water water. Because the time to heat up the liquor at a higher initial temperature to the required washing temperature, for example 90 ° C., is shorter, this person skilled in the art will avoid the time lost here by extending the active washing time, which counts from the time the washing temperature is reached until the end of the program section , balance again so that the time expenditure factor is not neglected and leads to a disturbance of the optimum described by the Sinner circle.

Der Erfindung liegt die Aufgabe zugrunde, ein eingangs genanntes Waschverfahren zu entwickeln, das den durch eine verkürzte Aufheizphase erzielbaren Energie-Spareffekt noch weiter steigert und zu einer Verkürzung der gesamten Dauer eines Waschprogramms führt. Dabei sollen die Ergebnisse betreffend Reinigungswirkung, Bleichintensität und Wäscheschonung verglichen mit solchen Programmabschnitten, bei denen nur kaltes Frischwasser zuläuft, möglichst auch erzielt, wenn nicht sogar übertroffen werden.The invention has for its object to develop a washing process mentioned at the outset which further increases the energy-saving effect which can be achieved by a shortened heating-up phase and which leads to a shortening of the overall duration of a washing program. The results regarding cleaning effect, bleaching intensity and gentle washing should be achieved, if not exceeded, as far as possible compared to those program sections in which only cold fresh water runs in.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß bei einem Programmabschnitt für normal verschmutzte Wäsche, bei dem warmes Frischwasser zuläuft, im Vergleich zu einem solchen Programmabschnitt, bei dem nur kaltes Frischwasser zuläuft, die aktive Waschzeit nach Erreichen der gewünschten Waschtemperatur der Lauge nur ca. 0 bis 40 % beträgt.According to the invention, this object is achieved in that in a program section for normally soiled laundry in which warm fresh water flows in, in comparison to such a program section in which only cold fresh water flows in, the active washing time after reaching the desired washing temperature of the alkali is only approx. 0 is up to 40%.

Bei beispielsweise Klarwasch-Programmabschnitten mit einer Waschtemperatur bei 90° C beträgt die Aufheizzeit bei voller Beladung der Waschmaschine ca. 40 min. Daran schließt sich normalerweise eine aktive Waschzeit von 20 min. an. Die Gesamtzeit dieses Programmabschnittes beträgt daher ca. 1 h. Diese Gesamtzeit würde der Fachmann, wie oben erläutert, auch bei einem Programmabschnitt einhalten, bei dem warmes Frischwasser zuläuft, der also mit einer höheren Anfangstemperatur von ca. 500 C eingeleitet wird. Beim erfindungsgemäßen Waschverfahren beträgt für dieses Beispiel die Aufheizzeit nur ca. 20 min. Anstatt nunmehr die Dauer der aktiven Waschzeit auf 40 min. zu verlängern, um wieder auf eine Gesamtzeit von ca. 1 h für den Programmabschnitt "Klarwäsche" zu kommen, wird nach dem erfindungsgemäßen Verfahren die aktive Waschzeit verkürzt. Sie beträgt also beispielsweise nur noch 0 bis 8 min. (entsprechend 0 bis 40 % von üblicherweise 20 min.). Die Gesamtzeit beträgt nunmehr nur noch ca. 25 min: Eine Verkürzung also um fast 60 %. Während dieser kurzen Zeit geht natürlich auch weniger Wärme durch Abstrahlung und Übergang an die Umgebung verloren, sodaß ein weiterer Energie-Spareffekt zu verzeichnen ist.In the case of, for example, rinse-aid program sections with a washing temperature at 90 ° C., the heating-up time is approximately 40 minutes when the washing machine is fully loaded. This is usually followed by an active washing time of 20 minutes. at. The total time of this program section is therefore approx. 1 hour. As explained above, the person skilled in the art would also adhere to this total time in the case of a program section in which warm fresh water flows in, that is to say which is initiated at a higher initial temperature of approximately 50 ° C. In the washing ver driving time for this example is only about 20 minutes. Instead of the duration of the active washing time to 40 min. To extend the time to come back to a total time of approx. 1 hour for the "Clear wash" program section, the active washing time is shortened by the method according to the invention. For example, it is now only 0 to 8 minutes. (corresponding to 0 to 40% of usually 20 min.). The total time is now only about 25 minutes: a reduction of almost 60%. During this short period of time, less heat is naturally lost through radiation and transition to the environment, so that there is another energy saving effect.

Überraschenderweise hat sich weiterhin gezeigt, daß die Ergebnisse betreffend Reinigungswirkung, Bleichintensität und Wäscheschonung beim erfindungsgemäßen Verfahren kaum beeinträchtigt sind, ja die Wäsche sogar noch besser geschont wird als mit den bisher üblichen Waschverfahren, bei denen ausschließlich Kaltwasser zufließt. Die Wäscheschonung ist sogar erheblich besser gegenüber einem Verfahren, bei dem Warmwasser zufließt und dessen Gesamtwaschzeit wiederum etwa 1 h dauert.Surprisingly, it has also been shown that the results regarding cleaning action, bleaching intensity and gentle laundry care are hardly impaired in the process according to the invention, and the laundry is even better protected than with the washing processes customary hitherto, in which only cold water flows in. The laundry protection is even considerably better than a method in which hot water flows in and whose total washing time again takes about 1 hour.

Der Verlust an mechanischer Einwirkung auf die Wäsche beim Programmabschnitt, bei dem warmes Frischwasser zuläuft, infolge kürzerer Waschzeit gegenüber einem solchen Programmabschnitt, bei dem nur kaltes Frischwasser zuläuft, kann bei einer vorteilhaften Weiterbildung des erfindungsgemäßen Verfahrens durch Intensivierung des Bewegungsrhythmus wenigstens teilweise ausgeglichen werden. Dadurch können die Ergebnisse betreffend Reinigungswirkung und Bleichintensität den jeweiligen Wünschen angepaßt werden.The loss of mechanical action on the laundry in the program section in which warm fresh water flows in as a result of a shorter washing time compared to such a program section in which only cold fresh water flows in can be at least partially compensated for in an advantageous development of the method according to the invention by intensifying the rhythm of movement. As a result, the results regarding cleaning effect and bleaching intensity can be adapted to the respective wishes.

Bei einer Gegenüberstellung in einem Test des Anmelders hat sich ergeben, daß mittels einer handelsüblichen Trommelwaschmaschine bei Vorwäsche und anschließender Kochwäsche 95 °C mit einer aktiven Waschzeit von 15 min. und einer Laugenan- fangstemperatur von 150 C Reinigungswirkungen nach DIN 44983 bei WFK-Schmutzgewebe von 64,2 % und bei EMPA-Schmutzgewebe von 56 %, eine Bleichintensität von 49,5 % und ein Verlust an Reißkraft von 6,5 % eintreten. Bei einer Anwendung des erfindungsgemäßen Verfahrens ebenfalls bei Vorwäsche und anschließender Kochwäsche von 95° C ohne aktive Waschzeit und einer Laugenanfangstemperatur von ca. 50° C lagen die Werte für die zuvor aufgezählten Ergebnisse in derselben Reihenfolge bei 63 %, 55,4 %, 49,4 % und 5,2 %. Daraus kann klar ersehen werden, daß das erfindungsgemäße Verfahren wesentliche ökonomische Vorteile gegenüber den bisher bekannten Waschverfahren aufweist.A comparison in a test by the applicant has shown that 95 ° C. using a commercially available drum washing machine for prewashing and subsequent hot washing with an active washing time of 15 min. and a Laugenan- f angstemperatur of 15 0 C in accordance with DIN 44983 at cleaning effects WFK soil cloth of 64.2% and EMPA soiled fabric of 56%, a bleaching intensity of 49.5% and a loss in tear strength of 6.5% occur . When the method according to the invention was also used for prewashing and subsequent boiling at 95 ° C. without an active washing time and an alkali starting temperature of approximately 50 ° C., the values for the results listed above were 63%, 55.4%, 49, in the same order. 4% and 5.2%. From this it can clearly be seen that the process according to the invention has significant economic advantages over the washing processes known to date.

Das erfindungsgemäße Verfahren kann in einer Trommelwaschmaschine durchgeführt werden, die gemäß einer Ausführungsform der Erfindung ein Programmsteuergerät mit einer Schaltstufe enthält, die ausgangsseitig an einen Setzeingang einer Zeitsteuerstufe schaltbar ist, deren einer Zeitablaufsignal-Ausgang mit einer Fortschaltstufe des Programmsteuergerätes verbunden ist. Die Schaltstufe kann dabei von einer Fortschalteinrichtung aktiviert werden und setzt beim Erreichen der gewünschten Waschtemperatur eine Zeitsteuerstufe in Gang, deren einer Ausgang bei Signalwechsel nach einer gewissen Zeit, z.B. 4 min., für den aktiven Waschvorgang die Aktivität dieser Schaltstufe beendet.The method according to the invention can be carried out in a drum washing machine which, according to one embodiment of the invention, contains a program control device with a switching stage which can be switched on the output side to a set input of a timing control stage, the timing signal output of which is connected to an indexing stage of the program control device. The switching stage can be activated by a step-up device and, when the desired washing temperature is reached, starts a timing stage, the output of which changes when the signal changes after a certain time, e.g. 4 min., The activity of this switching stage ends for the active washing process.

Bei einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Trommelwaschmaschine enthält das Programmsteuergerät eine Schaltstufe, die ausgangsseitig an einen Umschalteingang eines Taktgebers für den Bewegungsrhythmus schaltbar ist, wenn der Warmwasserzufluß beendet und die gewünschte Waschtemperatur erreicht ist. Dadurch kann für den Trommelantriebsmotor in der Aufheizphase ein intensiver Bewegungsrhythmus, z.B. 12 s Lauf und 3 s Pause, gewählt werden, der bei beendetem Warmwasserzufluß und erreichter Waschtemperatur auf normalen Bewegungsrhythmus, z.B. 7.5 s Lauf und 7,5 s Pause, umgestellt wird.In a further advantageous embodiment of the drum washing machine according to the invention, the program control device contains a switching stage which can be switched on the output side to a changeover input of a clock generator for the movement rhythm when the hot water flow has ended and the desired washing temperature has been reached. As a result, an intensive movement rhythm, eg 12 s run, can be used for the drum drive motor in the heating phase and 3 s pause, can be selected, which is switched to normal movement rhythm, for example 7.5 s run and 7.5 s pause, when the hot water supply has ended and the washing temperature has been reached.

Bei 4 min. Ablaufzeit zwischen dem Setzsignal an die Zeitsteuerstufe und deren Zeitablaufsignal hat sich eine aktive Waschzeit ergeben, bei der sich erfahrungsgemäß sehr gute Ergebnisse einstellen.At 4 min. Expiry time between the set signal to the time control stage and its timing signal has resulted in an active washing time, in which experience has shown that very good results are obtained.

Vorteilhafterweise kann das Programmsteuergerät weiterhin eine Schaltstufe enthalten, die mit einem Schalter für ein den Fluß des warmen Frischwassers steuerndes Magnetventil verbunden ist bzw. eine weitere Schaltstufe, die mit einem Schalter für eine die Waschlauge aufheizende Heizeinrichtung verbunden ist. Eine solche Ausgestaltung läßt beispielsweise eine Abhängigkeitsschaltung zum Wasserstand und zur Waschtemperatur zu.Advantageously, the program control unit can furthermore contain a switching stage which is connected to a switch for a magnetic valve controlling the flow of the warm fresh water or a further switching stage which is connected to a switch for a heating device which heats the wash liquor. Such a configuration allows, for example, a dependency circuit for the water level and the washing temperature.

Anhand eines in Figur 1 dargestellten Diagramms und einer in Figur 2 dargestellten blockschaltbildartigen Schaltungsanordnung sind das erfindungsgemäße Verfahren und eine zur Durchführung dieses Verfahrens geeignete, automatisch arbeitende Trommelwaschmaschine nachstehend beschrieben.The method according to the invention and an automatically operating drum washing machine suitable for carrying out this method are described below on the basis of a diagram shown in FIG. 1 and a block circuit-type circuit arrangement shown in FIG.

Die unausgefüllte Diagrammlinie in Figur 1 zeigt von 0 bis 40 min., gerechnet vom Beginn des für einen Klarwaschgang vorgesehenen Programmabschnittes, die Aufheizphase bei einem Programmabschnitt, bei dem nur kaltes Frischwasser zuläuft, das eine Anfangstemperatur von 15° C hat. Nach Beendigung des kontinuierlich verlaufenden Aufheizvorganges hat die Waschflotte eine Temperatur von voraussetzungsgemäß 90° C. Daran schließt sich eine 20-minütige aktive Waschzeit, sodaß dieser Programmabschnitt nach insgesamt 60-minütiger Dauer beendet ist und mit stufenweisem Zufluß von Kaltwasser und Abkühlen der Waschflotte ausläuft.The unfilled diagram line in FIG. 1 shows from 0 to 40 minutes, calculated from the beginning of the program section intended for a rinse cycle, the heating phase in a program section in which only cold fresh water that has an initial temperature of 15 ° C. is supplied. After the continuous heating process has ended, the washing liquor has a temperature of 90 ° C as required. This is followed by a 20-minute active washing time, so that this program section ends after a total of 60 minutes and ends with the gradual inflow of cold water and cooling of the washing liquor.

Im Gegensatz dazu zeigt die ausgefüllte Diagrammlinie den zeitlichen Verlauf der Temperatur beim erfindungsgemäßen Waschverfahren im Programmabschnitt für normal verschmutzte Wäsche, bei dem warmes Frischwasser zuläuft. Anfangs befindet sich auch im Warmwassernetz kühles Wasser, sodaß die Laugentemperatur schnell von etwa 15° C bis zum Abschalten des Frischwasserzulaufs auf etwa 50° C ansteigt. Dort beginnt die Aufheizphase, deren Verlauf im wesentlichen parallel zu dem Verlauf bei Aufheizen von kaltem Wasser verläuft. Nach 20 min. seit Beginn dieses Programmabschnittes ist die Aufheizphase beendet und eine Waschtemperatur von 90° C erreicht. Daran schließt sich noch eine aktive Waschzeit von etwa 5 min., sodaß nach 25 min. GesamtWaschzeit innerhalb dieses Programmabschnittes der Klarwaschgang beendet ist.In contrast, the filled diagram line shows the temperature over time in the washing method according to the invention in the program section for normally soiled laundry, in which warm fresh water flows in. At the beginning there is also cool water in the hot water network, so that the alkali temperature rises quickly from about 15 ° C to about 50 ° C until the fresh water supply is switched off. There the heating phase begins, the course of which is essentially parallel to the course of heating up cold water. After 20 min. since the beginning of this section of the program, the heating-up phase has ended and a washing temperature of 90 ° C has been reached. This is followed by an active washing time of about 5 minutes, so that after 25 minutes. Total wash time within this program section the rinse cycle has ended.

In Figur 2 ist ein Teil eines Blockschaltbildes für ein erfindungsgemäß in einer automatisch arbeitenden Trommelwaschmaschine vorgesehenes Programmsteuergerät dargestellt, welches das erfindungsgemäße Waschverfahren steuert. Es enthält Fortschaltstufen 1, 2 und 3, die nacheinander die Schaltstufen 11,12 und 13 aktivieren können. Der Ausgang der Schaltstufe 11 steuert die Kippstufe 21 in eine Lage, in der sie das an ihren Ausgang 210 geschaltete Magnetventil 30 einschaltet. Dieses Magnetventil steuert den Warmwasserzufluß in der Leitung 31.FIG. 2 shows part of a block diagram for a program control device provided according to the invention in an automatically operating drum washing machine, which controls the washing method according to the invention. It contains switching stages 1, 2 and 3, which can activate switching stages 11, 12 and 13 one after the other. The output of the switching stage 11 controls the flip-flop 21 in a position in which it switches on the solenoid valve 30 connected to its output 210. This solenoid valve controls the hot water flow in line 31.

Die Schaltstufe 12 steuert die bistabile Kippstufe 22 in eine Lage, in der ihr Ausgang 220 das Schütz 40 für die Laugenheizung 41 einschaltet.The switching stage 12 controls the bistable flip-flop 22 in a position in which its output 220 switches on the contactor 40 for the caustic heater 41.

Im Laugenbehälter 50 mündet die Zuflußleitung 31. Ferner sind im Laugenbehälter ein Wasserstandgeber 51 und ein Temperaturgeber 52 angeordnet, deren Schalter 53 und 54 geeignete Signale an die Schaltstufe 13 abgeben. Die Schaltstufe 13 gibt ihr Ausgangssignal auf den Seitzeingang einer Zeitsteuerstufe 23, deren einer Ausgang mit dem Schiebeeingang der Fortschaltstufen 1 bis 3 verbunden ist. Das Ausgangssignal der Schaltstufe 13 ist abhängig vom Signal der Schalter 53 und 54.The inflow line 31 opens into the tub 50. Furthermore, a water level sensor 51 and a temperature sensor 52 are arranged in the tub, the switches 53 and 54 of which emit suitable signals to the switching stage 13. The switching stage 13 gives her Output signal to the side input of a time control stage 23, one output of which is connected to the sliding input of the advance stages 1 to 3. The output signal of the switching stage 13 is dependent on the signal of the switches 53 and 54.

Der Schalter 53 ist außerdem an den Rücksetzeingang der bistabilen Kippstufe 21 geschaltet, die beim Rücksetzen das Magnetventil 30 wieder abschaltet. Der Schalter 54 ist außerdem an den Rücksetzeingang der bistabilen Kippstufe 22 geschaltet, die beim Rücksetzen das Heizungsschütz 40 abschaltet.The switch 53 is also connected to the reset input of the bistable multivibrator 21, which switches off the solenoid valve 30 again when the switch is reset. The switch 54 is also connected to the reset input of the bistable multivibrator 22, which switches off the heating contactor 40 when the switch is reset.

Claims (7)

1. Verfahren zum Waschen von Wäsche in einer programmgesteuerten Trommelwaschmaschine, die mit Anschlüssen für kaltes und warmes Frischwasser versehen ist, adurch gekennzeichnet , daß bei einem Programmabschnitt für normal verschmutzte Wäsche, bei dem warmes Frischwasser zuläuft, im Vergleich zu einem solchen Programmabschnitt, bei dem nur kaltes Frischwasser zuläuft, die aktive Waschzeit nach Erreichen der gewünschten Waschtemperatur der Lauge nur ca. 0 bis 40 % beträgt.1. A method for washing laundry in a program-controlled drum washing machine, which is provided with connections for cold and warm fresh water, characterized in that in a program section for normally soiled laundry, in which warm fresh water flows in, compared to such a program section in which only cold fresh water runs in, the active washing time after reaching the desired washing temperature of the lye is only approx. 0 to 40%. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Verlust an mechanischer Einwirkung auf die Wäsche beim Programmabschnitt, bei dem warmes Frischwasser zuläuft, infolge kürzerer Waschzeit gegenüber einem solchen Programmabschnitt, bei dem nur kaltes Frischwasser zuläuft, durch Intensivierung des Bewegungsrhythmus wenigstens teilweise ausgeglichen wird.2. The method according to claim 1, characterized in that the loss of mechanical action on the laundry in the program section in which warm fresh water flows in, due to shorter washing time compared to such a program section in which only cold fresh water flows in, is at least partially compensated for by intensifying the rhythm of movement becomes. 3. Automatisch arbeitende Trommelwaschmaschine zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß das Programmsteuergerät (Fig. 2) eine Schaltstufe (13) enthält, die ausgangsseitig an einen Setzeingang einer Zeitsteuerstufe (23) schaltbar ist, deren einer Zeitablaufsignal-Ausgang mit einer Fortschaltstufe (1) des Programmsteuergerätes verbunden ist.3. Automatically operating drum washing machine for performing the method according to claim 1, characterized in that the program control device (Fig. 2) contains a switching stage (13) which can be switched on the output side to a set input of a timing control stage (23), one of which has a timing signal output an advance stage (1) of the program control unit is connected. 4. Trommelwaschmaschine nach Anspruch 3 zur Durchführung des Verfahrens nach Anspruch 2, dadurch gekennzeichnet, daß das Programmsteuergerät eine Schaltstufe enthält, die ausgangsseitig an einen Umschalteingang eines Taktgebers für den Bewegungsrhythmus schaltbar ist, wenn der Warmwasserzufluß beendet und die gewünschte Waschtemperatur erreicht ist.4. Drum washing machine according to claim 3 for performing the method according to claim 2, characterized in that the program control unit contains a switching stage which can be switched on the output side to a switching input of a clock generator for the movement rhythm when the hot water flow has ended and the desired washing temperature has been reached. 5. Trommelwaschmaschine nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Ablaufzeit zwischen dem Setz-Signal an die Zeitsteuerstufe (23) und deren Zeitablaufssignal höchstens 4 min. beträgt.5. Drum washing machine according to claim 3 or 4, characterized in that the expiry time between the setting signal to the timing control stage (23) and its timing signal is at most 4 min. is. 6. Trommelwaschmaschine nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß eine der Schaltstufen (11) des Programmsteuergerätes mit einem Schalter (21) für ein den Fluß des warmen Frischwassers steuerndes Magnetventil (30) verbunden ist.6. Drum washing machine according to one of claims 3 to 5, characterized in that one of the switching stages (11) of the program control device is connected to a switch (21) for a solenoid valve (30) controlling the flow of warm fresh water. 7. Trommelwaschmaschine nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß eine der Schaltstufen (12) des Programmsteuergerätes mit einem Schalter (22) für eine die Waschlauge aufheizenden Heizeinrichtung (41) verbunden ist.7. Drum washing machine according to one of claims 3 to 6, characterized in that one of the switching stages (12) of the program control device is connected to a switch (22) for a heating device (41) which heats the washing liquor.
EP80106860A 1979-12-21 1980-11-07 Method of washing laundry Expired EP0031016B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2951926 1979-12-21
DE19792951926 DE2951926A1 (en) 1979-12-21 1979-12-21 METHOD FOR WASHING LAUNDRY AND AUTOMATICALLY WORKING DRUM WASHING MACHINE

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EP0031016A1 true EP0031016A1 (en) 1981-07-01
EP0031016B1 EP0031016B1 (en) 1984-04-18
EP0031016B2 EP0031016B2 (en) 1989-10-18

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CN102995353A (en) * 2012-12-04 2013-03-27 无锡小天鹅股份有限公司 Washing machine and control method thereof

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DE3030656C2 (en) * 1980-08-13 1985-08-08 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Method for varying a manually adjustable program sequence of an automatically operating washing machine and washing machine for carrying out the method
NZ207319A (en) * 1984-02-29 1988-02-12 Fisher & Paykel Clothes washing machine, control of spin cycle and of washing during water entry
DE102008054931B4 (en) 2008-12-18 2012-03-08 BSH Bosch und Siemens Hausgeräte GmbH Method for controlling a household washing machine
DE102010001325A1 (en) * 2010-01-28 2011-08-18 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Washing machine has caustic solution container, drum, water inlet system with temperature sensor, system of expiration of caustic solution and program control

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US20070289607A1 (en) * 2006-06-19 2007-12-20 Samsung Electronics Co., Ltd. Washing machine and washing control method of the same
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CN101092788B (en) * 2006-06-19 2010-10-13 三星电子株式会社 Washing machine and washing control method of the same
US9045852B2 (en) 2006-06-19 2015-06-02 Samsung Electronics Co., Ltd. Washing machine and washing control method of the same
CN102995353A (en) * 2012-12-04 2013-03-27 无锡小天鹅股份有限公司 Washing machine and control method thereof
CN102995353B (en) * 2012-12-04 2015-07-01 无锡小天鹅股份有限公司 Washing machine and control method thereof

Also Published As

Publication number Publication date
DE2951926C2 (en) 1988-07-07
EP0031016B2 (en) 1989-10-18
DE3067571D1 (en) 1984-05-24
DE2951926A1 (en) 1981-07-02
EP0031016B1 (en) 1984-04-18

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