EP0031016B2 - Method of washing laundry - Google Patents
Method of washing laundry Download PDFInfo
- Publication number
- EP0031016B2 EP0031016B2 EP80106860A EP80106860A EP0031016B2 EP 0031016 B2 EP0031016 B2 EP 0031016B2 EP 80106860 A EP80106860 A EP 80106860A EP 80106860 A EP80106860 A EP 80106860A EP 0031016 B2 EP0031016 B2 EP 0031016B2
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- Prior art keywords
- washing
- time
- program section
- laundry
- cold
- 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.)
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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
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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
- 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
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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
- 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
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
Definitions
- the invention relates to a method for washing laundry in a program-controlled drum washing machine, which is provided with connections for cold and hot domestic water of a household.
- Drum washing machines with connections for cold and warm fresh water are known (DE-C 853 151).
- the washing processes taking place do not differ from washing processes that are used in drum washing machines that are only equipped with a cold water connection.
- the laundry care specialist is required to set up a program section for washing normally soiled laundry, in which only fresh or only warm fresh water is used instead of cold so that the total washing time during this program section is approximately as long as for a corresponding program section with only cold fresh water.
- this specialist will compensate for the time lost here by extending the active washing time, which counts from the time the washing temperature is reached to the end of the program section, so that the time factor is not neglected and leads to a disruption of the leads the optimum described by Sinner's 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 the case of a program section for normally soiled laundry in which hot domestic water is flowing in, in comparison to such a program section in which only cold domestic water is running 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.
- the total time of this program section is therefore approx. 1 hour.
- the person skilled in the art would also observe this total time in the case of a program section in which hot domestic water is supplied, that is to say which is initiated at a higher initial temperature of approximately 50 ° C.
- the heating-up time for this example is only about 20 minutes.
- the active washing time is shortened according to the method according to the invention. For example, it is now only 0 to 8 minutes (corresponding to 0 to 40% of usually 20 minutes). The total time is now only 25 minutes: a reduction of almost 60%. During this short time, of course, less heat is lost through radiation and transition to the environment, so that another energy-saving effect can be seen.
- the loss of mechanical action on the laundry in the program section in which warm process water flows in, as a result of a shorter washing time compared to such a program section in which only cold process water runs 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. This means that the results regarding cleaning effectiveness and bleaching intensity can be adapted to the respective requirements.
- the method according to the invention can be carried out in a drum-type washing machine which contains a program control device with a switching stage which, when the desired washing temperature is reached, emits an output signal to the set input of a time control stage for the active washing process, the one time-out signal output of which is connected to an advance stage of the program control unit.
- 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. B. 4 min, the activity of this switching stage ends for the active washing process.
- the program control device contains a further 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 further 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 hot domestic water or a further switching stage which is connected to a switch for a heating device which heats the washing liquor.
- a switching stage which is connected to a switch for a magnetic valve controlling the flow of the hot domestic water
- a further switching stage which is connected to a switch for a heating device which heats the washing 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 process water that has an initial temperature of 15 ° C. is supplied. After the continuous heating process has ended, the wash liquor has a temperature of 90 ° C as a prerequisite. 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 time course of the temperature in the washing method according to the invention in the program section for normally soiled laundry, in which warm process 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 a total washing time of 25 minutes within this program section, the clear wash cycle ends.
- FIG. 2 shows part of a block diagram for a program control device which is provided in an automatically operating drum washing machine and which controls the washing method in accordance with 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 outputs its output signal to the set input of a timing 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.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Description
Die Erfindung geht aus von einem Verfahren zum Waschen von Wäsche in einer programmgesteuerten Trommelwaschmaschine, die mit Anschlüssen für kaltes und warmes Brauchwasser eines Haushalts versehen ist.The invention relates to a method for washing laundry in a program-controlled drum washing machine, which is provided with connections for cold and hot domestic water of a household.
Es sind Trommelwaschmaschinen mit Anschlüssen für kaltes und warmes Frischwasser bekannt (DE-C 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-C 853 151). In principle, the washing processes taking place do not differ from washing processes that are used in drum washing machines that 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's Circle (compare Dr. K. Lindner in the journal "Soap-Oil-Fate-Waxes" 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 required to set up a program section for washing normally soiled laundry, in which only fresh or only warm fresh water is used instead of cold so that the total washing time during this program section is approximately as long as for a corresponding program section with only cold fresh water. This is because the time to heat the liquor at a higher initial temperature up to the required washing temperature, e.g. 90 ° C, is shorter, this specialist will compensate for the time lost here by extending the active washing time, which counts from the time the washing temperature is reached to the end of the program section, so that the time factor is not neglected and leads to a disruption of the leads the optimum described by Sinner's circle.
Der Erfindung liegt die Aufgabe zugrunde, ein eingangs genanntes Waschverfahren zu entwikkeln, 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 Brauchwasser zuläuft, im Vergleich zu einem solchen Programmabschnitt, bei dem nur kaltes Brauchwasser 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 the case of a program section for normally soiled laundry in which hot domestic water is flowing in, in comparison to such a program section in which only cold domestic water is running 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 Programmabschnitts beträgt daher ca. 1 h. Diese Gesamtzeit würde der Fachmann, wie oben erläutert, auch bei einem Programmabschnitt einhalten, bei dem warmes Brauchwasser zuläuft, der also mit einer höheren Anfangstemperatur von ca. 50°C eingeleitetwird. 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 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, so dass 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. The total time of this program section is therefore approx. 1 hour. As explained above, the person skilled in the art would also observe this total time in the case of a program section in which hot domestic water is supplied, that is to say which is initiated at a higher initial temperature of approximately 50 ° C. In the washing process according to the invention, the heating-up time for this example is only about 20 minutes. Instead of now extending the duration of the active washing time to 40 minutes in order to come back to a total time of approximately 1 hour for the program section “clear wash”, the active washing time is shortened according to the method according to the invention. For example, it is now only 0 to 8 minutes (corresponding to 0 to 40% of usually 20 minutes). The total time is now only 25 minutes: a reduction of almost 60%. During this short time, of course, less heat is lost through radiation and transition to the environment, so that another energy-saving effect can be seen.
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. The laundry protection is even significantly 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 Brauchwasser zuläuft, infolge kürzerer Waschzeit gegenüber einem solchen Programmabschnitt, bei dem nur kaltes Brauchwasser 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 process water flows in, as a result of a shorter washing time compared to such a program section in which only cold process water runs 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. This means that the results regarding cleaning effectiveness and bleaching intensity can be adapted to the respective requirements.
Bei einer Gegenüberstellung in einem Test des Anmelders hat sich ergeben, dass mittels einer handelsüblichen Trommelwaschmaschine bei Vorwäsche und anschliessender Kochwäsche von 95°C mit einer aktiven Waschzeit von 15 min und einer Laugenanfangstemperatur von 15°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 showed that using a commercially available drum washing machine for prewash and subsequent hot wash at 95 ° C with an active washing time of 15 min and an alkali starting temperature of 15 ° C, cleaning effects according to DIN 44983 for WFK dirt fabric of 64 , 2% and with EMPA dirty tissue of 56%, a bleaching intensity of 49.5% and a loss of tear strength of 6.5% occur. When using the method according to the invention also with prewash and subsequent hot wash at 95 ° C without active washing time and an alkali starting temperature of approx. 50 ° C, the values for the previously enumerated results in the same order were 63%, 55.4%, 49.4% and 5.2%. It can clearly be seen from this that the method according to the invention has significant economic advantages over the previously known washing methods.
Das erfindungsgemässe Verfahren kann in einer Trommelwaschmaschine durchgeführt werden, die ein Programmsteuergerät mit einer Schaltstufe enthält, die beim Erreichen der gewünschten Waschtemperatur ein Ausgangssignal an den Setzeingang einer Zeitsteuerstufe für den aktiven Waschvorgang abgibt, deren einer Zeitablaufsignal-Ausgang mit einer Fortschaltstufe des Programmsteuergeräts 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-type washing machine which contains a program control device with a switching stage which, when the desired washing temperature is reached, emits an output signal to the set input of a time control stage for the active washing process, the one time-out signal output of which is connected to an advance stage of the program control unit. 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. B. 4 min, the activity of this switching stage ends for the active washing process.
Bei einer weiteren vorteilhaften Ausführungsform der Trommelwaschmaschine enthält das Programmsteuergerät eine weitere 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. 7,5s Lauf und 7,5 s Pause, umgestellt wird.In a further advantageous embodiment of the drum washing machine, the program control device contains a further 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. This allows an intensive movement rhythm, e.g. B. 12 s run and 3 s break, can be selected, the normal movement rhythm, z. B. 7.5 s run and 7.5 s break.
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.With a 4 min expiry time between the set signal to the time control stage and its time expiry signal, there was an active washing time, in which experience has shown very good results.
Vorteilhafterweise kann das Programmsteuergerät weiterhin eine Schaltstufe enthalten, die mit einem Schalter für ein den Fluss des warmen Brauchwassers 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 hot domestic water or a further switching stage which is connected to a switch for a heating device which heats the washing liquor. Such an embodiment allows, for example, a dependency circuit for the water level and the washing temperature.
Anhand eines in Fig. 1 dargestellten Diagramms und einer in Fig. dargestellten blockschaltbildartigen Schaltungsanordnung sind das erfingungsgemässe Verfahren und einen Teil einer zur Durchführung dieses Verfahrens geeigneten, automatisch arbeitenden Trommelwaschmaschine nachstehend beschrieben.The method according to the invention and a part of 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 arrangement in the form of a block diagram.
Die unausgefüllte Diagrammlinie in Fig. 1 zeigt von 0 bis 40 min, gerechnet vom Beginn des für einen Klarwaschgang vorgesehenen Programmabschnitts, die Aufheizphase bei einem Programmabschnitt, bei dem nur kaltes Brauchwasser zuläuft, das eine Anfangstemperatur von 15°C hat. Nach Beendigung des kontinuierlich verlaufenden Aufheizvorgangs hat die Waschflotte eine Temperatur von voraussetzungsmässig 90°C. Daran schliesst sich eine 20minütige aktive Waschzeit, so dass dieser Programmabschnitt nach insgesamt 60minütiger 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 process water that has an initial temperature of 15 ° C. is supplied. After the continuous heating process has ended, the wash liquor has a temperature of 90 ° C as a prerequisite. 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 Brauchwasser zuläuft. Anfangs befindet sich auch im Warmwassernetz kühles Wasser, so dass die Laugentemperatur schnell von etwa 15°C bis zum Abschalten des Brauchwasserzutaufs 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 Programmabschnitts ist die Aufheizphase beendet und eine Waschtemperatur von 90°C erreicht. Daran schliesst sich noch eine aktive Waschzeit von etwa 5 min, so dass nach 25 min Gesamt-Waschzeit innerhalb dieses Programmabschnitts der Klarwaschgang beendet ist.In contrast to this, the filled diagram line shows the time course of the temperature in the washing method according to the invention in the program section for normally soiled laundry, in which warm process water flows in. At the beginning there is also cool water in the hot water network, so that the alkali temperature quickly increases from around 15 ° C to around 50 ° C until the hot 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 minutes since the beginning of this program section, 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 a total washing time of 25 minutes within this program section, the clear wash cycle ends.
In Fig. 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 which is provided in an automatically operating drum washing machine and which controls the washing method in accordance with the invention. It contains
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
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 Setzeingang 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
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
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE2951926 | 1979-12-21 | ||
DE19792951926 DE2951926A1 (en) | 1979-12-21 | 1979-12-21 | METHOD FOR WASHING LAUNDRY AND AUTOMATICALLY WORKING DRUM WASHING MACHINE |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0031016A1 EP0031016A1 (en) | 1981-07-01 |
EP0031016B1 EP0031016B1 (en) | 1984-04-18 |
EP0031016B2 true EP0031016B2 (en) | 1989-10-18 |
Family
ID=6089359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80106860A Expired EP0031016B2 (en) | 1979-12-21 | 1980-11-07 | Method of washing laundry |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0031016B2 (en) |
DE (2) | DE2951926A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
KR101085494B1 (en) * | 2006-06-19 | 2011-11-23 | 삼성전자주식회사 | Washing machine and laundry control method |
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 |
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 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB675115A (en) * | 1949-09-24 | 1952-07-02 | Fisher & Ludlow Ltd | Improvements in or relating to washing machines |
FR1046617A (en) * | 1950-06-12 | 1953-12-08 | Hoover Ltd | Washing machine for household use |
DE919883C (en) * | 1951-05-20 | 1955-09-05 | Heinrich Oelkers | Washing processes for textiles, in particular laundry |
US2949759A (en) * | 1957-06-27 | 1960-08-23 | Gen Motors Corp | Domestic appliance |
AT270550B (en) * | 1963-10-29 | 1969-04-25 | Zanussi A Spa Industrie | Leaching method for washing laundry |
DE2730865C3 (en) * | 1977-07-08 | 1988-12-01 | Bauknecht Hausgeräte GmbH, 7000 Stuttgart | Household washing machine or dishwasher |
-
1979
- 1979-12-21 DE DE19792951926 patent/DE2951926A1/en active Granted
-
1980
- 1980-11-07 DE DE8080106860T patent/DE3067571D1/en not_active Expired
- 1980-11-07 EP EP80106860A patent/EP0031016B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3067571D1 (en) | 1984-05-24 |
DE2951926A1 (en) | 1981-07-02 |
EP0031016A1 (en) | 1981-07-01 |
EP0031016B1 (en) | 1984-04-18 |
DE2951926C2 (en) | 1988-07-07 |
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