EP2256240A1 - Washing machine and method for washing clothes in a washing machine - Google Patents

Washing machine and method for washing clothes in a washing machine Download PDF

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Publication number
EP2256240A1
EP2256240A1 EP09007096A EP09007096A EP2256240A1 EP 2256240 A1 EP2256240 A1 EP 2256240A1 EP 09007096 A EP09007096 A EP 09007096A EP 09007096 A EP09007096 A EP 09007096A EP 2256240 A1 EP2256240 A1 EP 2256240A1
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EP
European Patent Office
Prior art keywords
washing
water level
drum
duration
rotational
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.)
Granted
Application number
EP09007096A
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German (de)
French (fr)
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EP2256240B1 (en
Inventor
Dirk Sieding
Marcel Zielke
Felix Maßmann
Olga Walth
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Miele und Cie KG
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Miele und Cie KG
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Priority to EP09007096A priority Critical patent/EP2256240B1/en
Priority to PL09007096T priority patent/PL2256240T3/en
Priority to AT09007096T priority patent/ATE516398T1/en
Priority to ES09007096T priority patent/ES2365298T3/en
Publication of EP2256240A1 publication Critical patent/EP2256240A1/en
Application granted granted Critical
Publication of EP2256240B1 publication Critical patent/EP2256240B1/en
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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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors

Definitions

  • the invention relates to a method for washing a laundry item in a washing machine with a tub, in which a drum is rotatably mounted and driven by a motor, comprising a washing phase, in which an amount of water is admitted into the tub until a predetermined water level is reached, and a plurality of rotational phases in which the drum is rotated at a predetermined speed and duration to move the laundry item within the drum, and wherein there are rotational pauses between each of the rotational phases.
  • the invention further relates to a washing machine or a washer-dryer with a housing and a therein, vibrating mounted tub, in which a drivable with a motor drum is rotatably mounted, a water inlet valve, a drain device, a detection device for the water level within the tub and a microprocessor Control device adapted to control the water inlet valve and the drainage device and the motor in dependence on the detected water level for carrying out the method described below.
  • the laundry For washing laundry in a washing machine, the laundry is washed in a first phase with heated water with the addition of detergent with slight or strong drum movement, depending on the selected or detected type of washing.
  • the laundry In order to achieve a good development of the detergent and a good soil solution, the laundry is usually moved for about 20 to 80 minutes in the washing liquid. Subsequently, the laundry is rinsed, whereby spent washing liquid is pumped out. After rinsing, the laundry is spun to drain it. In this case, however, a stronger washing mechanism is effected at low load due to the approximately equal drum movement, which unnecessarily lengthens the wash cycle and increases the wear of the laundry.
  • a method for washing laundry is known in which the rotational drive time in the washing phase can be varied by means of information about the amount of laundry.
  • the rotational drive time is determined by the ratio of drum rotation to pause is set accordingly. This tunes the washing process more precisely to the load.
  • the invention is therefore based on the object, in a washing or rinsing cycle to provide a good washing or rinsing effect with improved protection of the laundry items to be washed.
  • the essential advantage of the method according to the invention is that a simple washing mechanism is provided in a simple manner, which is matched to the laundry items to be washed.
  • the washing effect is not affected by the optimal mechanics entry or even improved at high loadings.
  • the optimal laundry movement is achieved in that the duration of the individual rotational phases is limited in each case by a sinking during the rotation phase water level and the duration of the rotation breaks is limited in each case by a rising during the rotation break water level.
  • This means that the drive time of the drum is no longer set by the amount of laundry and / or the type of laundry detected at the beginning of the program, but by the amount of liquid in the free liquor during washing.
  • the rotation break is adjusted until the liquor flows out of the laundry, so that in this time the dirt is discharged from the laundry zw. Rinsed out.
  • a mixed-composition laundry item can also be optimally washed.
  • the composition is known because the drum is rotated in response to the actually occurring suction and discharge behavior of the laundry item.
  • the drum rotation is adjusted even when changing the suction or exit behavior during the washing phase.
  • the duration of the respective rotational phase by means of the time of lowering of the water level is set from an upper limit to a lower limit and the duration of the rotation break by means of the time of increase of the water level after the end of the rotational phase or from the lower limit is set to the upper limit.
  • intended for washing or rinsing amount of water of the free liquor has a predetermined water level of about 45 to 80 mmWs and that the low water level by about 5 to 15 mmWs lower than the specified water level.
  • the drum is rotated during the rotation phase at a speed of 25 to 40 1 / min.
  • the drum is rotated reversing, being rotated during a rotational phase in each case only in a single direction of rotation.
  • the suction phase is kept quite short due to the suction behavior of moving laundry, resulting in a total of a short and effective washing phase.
  • a duration of about 30 to 80 minutes for the washing phase is expedient to provide a duration of about 30 to 80 minutes for the washing phase.
  • the duration depends on the set pollution, the amount of laundry and the type of laundry.
  • FIG. 1 is a purely schematic representation of a washing machine 1, shown with a tub 2.
  • a rotatably mounted and driven by an electric motor 13 drum 3 is arranged, which are located in the tub 2 and in the drum 3 garments 8 and 8, respectively. Laundry items moved.
  • the drum 3 is made in the present embodiment of stainless steel and provided with a plurality of openings for the flooding.
  • the housing 4 has a loading opening 9, via which the interior of the drum 3 can be reached through the sealing sleeve 6.
  • the loading opening 9 can be closed by means of the door 5.
  • the water or the washing liquid 7, which is needed for cleaning or treating the laundry 8.
  • a radiator 10 is arranged in the lower region of the tub 2.
  • an inlet valve 15 is sketched, which controls the entry of the water from the supply network.
  • the water is passed through the connecting pipe 14 in the tub 2, wherein in the dispenser 11 entered detergent is flushed into the tub 2.
  • a drain device 12 is arranged, which brings out the spent washing liquid or the rinse water 7 from the tub 2 to the drain line 16, which usually opens into a sewer.
  • the control device 17 controls the water inlet 15, the activity of the drain device 12 and the drive motor 13, which is energized via the power unit or a frequency converter 18, and the radiator 10.
  • Fig. 2b is the drum speed (speed) in a diagram for a section of the washing phase of a washing cycle or a program for washing laundry 8 (FIG. Fig. 1 ).
  • the duration of the respective phases and sections in time segments is shown here by way of example on the common time axis t.
  • the duration of the rotation pause P is also set by the water level of the free fleet, the water level of the free fleet increases when the laundry item is not moved. This phase is also referred to as Schmutzaustragsphase, because the water penetrating from the tissue flooded dirt particles from the tissue in the free fleet.
  • Schmutzaustragsphase because the water penetrating from the tissue flooded dirt particles from the tissue in the free fleet.
  • Fig. 2a the rise and fall of the water level are sketched as a linear function, in practice they can also have curved courses.
  • a greater decrease in the water level level occurs than shortly before reaching the lower limit L.
  • the increase in the water level level at the beginning of the rotation P is stronger than shortly before reaching the upper limit H
  • the method described here does not restrictively refer to water but also to a washing or rinsing liquid provided with detergent or other additives.
  • the rotation phases Ro and rotation pauses P are repeated a plurality of times until a predetermined time for the washing phase WA is reached or a predetermined number of rotation cycles Ro have been performed.

Abstract

The method involves rotating a drum (3) with predetermined speed and duration in multiple rotational phases, such that laundry items (8) are moved within the drum. Rotational breaks are given between the rotational phases. The duration of each rotational phase is limited by a water level dropping during the rotational phase. Duration of the rotational breaks is limited by the water level increasing during the rotational phase. The duration of the each rotational phase is defined by time of dropping of the water level from an upper limit value (H) to a lower limit value (L). An independent claim is also included for a washing machine or washer-dryer comprising a housing.

Description

Die Erfindung betrifft ein Verfahren zum Waschen eines Wäschepostens in einer Waschmaschine mit einem Laugenbehälter, in dem eine Trommel drehbar gelagert und mittels eines Motors angetrieben ist, umfassend eine Waschphase, in der eine Wassermenge in den Laugenbehälter eingelassen wird, bis ein vorgegebener Wasserstand erreicht ist, und mehrere Drehphasen, in denen die Trommel mit einer vorgegebenen Drehzahl und Dauer gedreht wird, um den Wäscheposten innerhalb der Trommel zu bewegen, und wobei jeweils zwischen den Drehphasen Drehpausen liegen.The invention relates to a method for washing a laundry item in a washing machine with a tub, in which a drum is rotatably mounted and driven by a motor, comprising a washing phase, in which an amount of water is admitted into the tub until a predetermined water level is reached, and a plurality of rotational phases in which the drum is rotated at a predetermined speed and duration to move the laundry item within the drum, and wherein there are rotational pauses between each of the rotational phases.

Die Erfindung betrifft ferner eine Waschmaschine oder einen Waschtrockner mit einem Gehäuse und einem darin angeordneten, schwingbeweglich befestigten Laugenbehälter, in dem eine mit einem Motor antreibbare Trommel drehbar gelagert ist, einem Wasserzulaufventil, einer Ablaufeinrichtung, einer Erfassungseinrichtung für den Wasserstand innerhalb des Laugenbehälters und einer Mikroprozessor-Steuereinrichtung, die dazu ausgebildet ist, das Wasserzulaufventil und die Ablaufeinrichtung und den Motor in Abhängigkeit des erfassten Wasserstandes zur Durchführung des nachfolgend beschriebenen Verfahrens zu steuern.The invention further relates to a washing machine or a washer-dryer with a housing and a therein, vibrating mounted tub, in which a drivable with a motor drum is rotatably mounted, a water inlet valve, a drain device, a detection device for the water level within the tub and a microprocessor Control device adapted to control the water inlet valve and the drainage device and the motor in dependence on the detected water level for carrying out the method described below.

Zum Waschen von Wäsche in einer Waschmaschine wird die Wäsche in einer ersten Phase mit erwärmtem Wasser unter Zugabe von Waschmittel mit leichter oder starker Trommelbewegung gewaschen, je nach ausgewählter oder erfasster Wäscheart. Um eine gute Entfaltung des Waschmittels und eine gute Schmutzlösung zu erreichen, wird die Wäsche in der Regel für etwa 20 bis 80 Minuten in der Waschflüssigkeit bewegt. Anschließend wird die Wäsche gespült, wobei verbrauchte Waschflüssigkeit abgepumpt wird. Nach dem Spülen wird die Wäsche geschleudert, um sie zu entwässern. Hierbei wird jedoch bei geringer Beladung aufgrund der etwa gleichlangen Trommelbewegung eine stärkere Waschmechanik bewirkt, was den Waschgang unnötig verlängert und den Verschleiß der Wäsche vergrößert.For washing laundry in a washing machine, the laundry is washed in a first phase with heated water with the addition of detergent with slight or strong drum movement, depending on the selected or detected type of washing. In order to achieve a good development of the detergent and a good soil solution, the laundry is usually moved for about 20 to 80 minutes in the washing liquid. Subsequently, the laundry is rinsed, whereby spent washing liquid is pumped out. After rinsing, the laundry is spun to drain it. In this case, however, a stronger washing mechanism is effected at low load due to the approximately equal drum movement, which unnecessarily lengthens the wash cycle and increases the wear of the laundry.

Aus der DE 43 13 814 A1 ist ein Verfahren zum Waschen von Wäsche bekannt, bei dem die Drehantriebsdauer in der Waschphase mittels einer Information über die Wäschemenge variiert werden kann. Hierbei wird die Drehantriebsdauer dadurch bestimmt, dass das Verhältnis von Trommeldrehung zur Pause entsprechend eingestellt wird. Dadurch wird der Waschprozess genauer auf die Beladungsmenge abgestimmt.From the DE 43 13 814 A1 For example, a method for washing laundry is known in which the rotational drive time in the washing phase can be varied by means of information about the amount of laundry. Here, the rotational drive time is determined by the ratio of drum rotation to pause is set accordingly. This tunes the washing process more precisely to the load.

Aus der DE 34 36 786 A1 ist es bekannt, bei einer Haushaltswaschmaschine mit horizontal drehender Trommel die Drehzahl der Trommel abhängig vom zu waschenden Wäscheposten einzustellen. Hierbei wird bei einem stark saugfähigen Wäscheposten von einer großen Beladungsmenge mit Koch-Buntwäsche ausgegangen, wobei eine hohe Drehzahl, beispielsweise 65 1/min, eingestellt wird. Bei einem Wäscheposten mit geringer Saugfähigkeit wird von einer geringeren Beladungsmenge ausgegangen, wobei eine geringe Drehzahl, beispielsweise 45 1/min, eingestellt wird.From the DE 34 36 786 A1 It is known in a household washing machine with horizontally rotating drum, the rotational speed of the drum depending on the laundry items to be washed adjust. This is assumed in a highly absorbent laundry items from a large load of cooking color washing, with a high speed, for example, 65 1 / min, is set. For a low absorbency item, a lower load is assumed, with a low speed, such as 45 rpm, being set.

Bei diesen Verfahren besteht jedoch immer noch die Gefahr, dass ein stark saugfähiger Wäscheposten bei geringer Beladung mit einer zu hohen Mechanik beaufschlagt wird, was zu einem übermäßigen Verschleiß oder zu Schäden führen kann.However, with these methods, there is still a risk that a highly absorbent laundry item will be subjected to too high a mechanical load at low loading, which may lead to excessive wear or damage.

Der Erfindung liegt deshalb die Aufgabe zu Grunde, bei einem Wasch,- oder Spülzyklus eine gute Wasch- oder Spülwirkung bei verbesserter Schonung des zu waschenden Wäschepostens bereit zu stellen.The invention is therefore based on the object, in a washing or rinsing cycle to provide a good washing or rinsing effect with improved protection of the laundry items to be washed.

Die Aufgabe wird durch ein Verfahren mit den Merkmalen des Anspruchs 1 und mit einer Waschmaschine mit den Merkmalen des Anspruchs 7 gelöst. Vorteilhafte Ausführungen ergeben sich aus den abhängigen Ansprüchen 2 bis 6.The object is achieved by a method having the features of claim 1 and with a washing machine having the features of claim 7. Advantageous embodiments emerge from the dependent claims 2 to 6.

Der wesentliche Vorteil des erfindungsgemäßen Verfahrens ist, dass auf einfache Weise eine optimale, auf den zu waschenden Wäscheposten abgestimmte Waschmechanik bereitgestellt wird. Die Waschwirkung wird durch den optimalen Mechanikeintrag nicht beeinträchtigt bzw. bei großen Beladungsmengen sogar verbessert.The essential advantage of the method according to the invention is that a simple washing mechanism is provided in a simple manner, which is matched to the laundry items to be washed. The washing effect is not affected by the optimal mechanics entry or even improved at high loadings.

Die optimale Wäschebewegung wird dadurch erreicht, dass die Dauer der einzelnen Drehphasen jeweils von einem während der Drehphase absinkenden Wasserstand begrenzt ist und die Dauer der Drehpausen jeweils von einem während der Drehpause ansteigenden Wasserstand begrenzt ist. Das bedeutet, dass die Antriebsdauer der Trommel nicht mehr anhand der zu Beginn des Programmablaufs erfassten Wäschemenge und/oder Wäscheart eingestellt wird, sondern anhand der Flüssigkeitsmenge der Freien Flotte während des Waschens. Das hat den besonderen Vorteil, dass eine optimale Waschwirkung erreicht wird, weil die mechanische Einwirkung auf den Wäscheposten nur so lange erfolgt, bis dieser aufgrund der Saugwirkung einen Großteil der Waschflotte gebunden hat. Anschließend wird die Drehpause so lange eingestellt, bis die Flotte aus der Wäsche heraus fließt, so dass in dieser Zeit der Schmutz aus der Wäsche ausgetragen zw. Herausgespült wird. Diese beiden Phasen, die Saugphase und die Schmutzaustragsphase wechseln sich nun mehrmals ab, wobei die Zeit jeweils durch den jeweiligen Wasserstand festgelegt ist, so dass es zu keinen unnötigen Wartezeiten kommt. Mit dem erfindungsgemäßen Verfahren kann auch ein Wäscheposten mit gemischter Zusammensetzung optimal gewaschen werden. Für das Verfahren ist es nicht notwendig, dass die Zusammensetzung bekannt ist, weil die Trommel in Abhängigkeit vom tatsächlich auftretenden Saug- und Austrittsverhaltens des Wäschepostens gedreht wird. Somit wird die Trommeldrehung auch bei verändertem Saugverhalten oder Austrittsverhaltens während der Waschphase angepasst.The optimal laundry movement is achieved in that the duration of the individual rotational phases is limited in each case by a sinking during the rotation phase water level and the duration of the rotation breaks is limited in each case by a rising during the rotation break water level. This means that the drive time of the drum is no longer set by the amount of laundry and / or the type of laundry detected at the beginning of the program, but by the amount of liquid in the free liquor during washing. This has the particular advantage that an optimal washing effect is achieved because the mechanical action on the laundry items only takes place until it has bound a large part of the wash liquor due to the suction effect. Subsequently, the rotation break is adjusted until the liquor flows out of the laundry, so that in this time the dirt is discharged from the laundry zw. Rinsed out. These two phases, the suction phase and the Schmutzaustragsphase now alternate several times, the time is determined by the respective water level, so there is no unnecessary waiting. With the method according to the invention, a mixed-composition laundry item can also be optimally washed. For the process, it is not necessary that the composition is known because the drum is rotated in response to the actually occurring suction and discharge behavior of the laundry item. Thus, the drum rotation is adjusted even when changing the suction or exit behavior during the washing phase.

Hierbei ist es zweckmäßig, dass die Dauer der jeweiligen Drehphase mittels der Zeit des Absinkens des Wasserstandes von einem oberen Grenzwert zu einem unteren Grenzwert festgelegt ist und die Dauer der Drehpause mittels der Zeit des Ansteigens des Wasserstandes nach dem Ende der Drehphase bzw. vom unteren Grenzwert zum oberen Grenzwert festgelegt ist. Damit wird zuverlässig verhindert, dass der Wäscheposten mit einer zu hohen mechanischen Einwirkung beaufschlagt wird und andererseits werden die Pausen nur so lange eingestellt, bis keine gebundene Flotte mehr aus dem Wäscheposten heraustritt. Bei fest vorgegebenen Zeiten kann es vorkommen, dass diese zu lang sind, was die gesamte Waschphase unnötig verlängert oder sie sind zu kurz, so dass die Schmutzaustragsphase nicht vollständig beendet ist, wenn die Trommel wieder bewegt wird, was zu einer schlechteren Waschwirkung führt.It is expedient that the duration of the respective rotational phase by means of the time of lowering of the water level is set from an upper limit to a lower limit and the duration of the rotation break by means of the time of increase of the water level after the end of the rotational phase or from the lower limit is set to the upper limit. This reliably prevents the laundry item from being subjected to too high a mechanical action and, on the other hand, the breaks are only adjusted until no bound liquor leaves the laundry item. At fixed times, these may be too long, unnecessarily prolonging the entire wash phase, or too short, so that the dirt discharge phase is not completely completed when the drum is moved again, resulting in a poorer wash effect.

Bei einer Trommelwaschmaschine für den Haushalt mit einem Trommelvolumen im Bereich von 45 bis 65 I ist es zweckmäßig, dass die zum Waschen oder Spülen vorgesehene Wassermenge der freien Flotte einen vorgegebenen Wasserstand von etwa 45 bis 80 mmWs aufweist und dass der niedrige Wasserstand um etwa 5 bis 15 mmWs niedriger ist, als der vorgegebene Wasserstand. Somit wird für nahezu alle im Haushalt vorkommenden Wäscheposten, wie unter anderem Koch-Buntwäsche, Pflegeleicht, Feinwäsche, und Beladungsmengen ein optimales Waschergebnis bei geringer Wassermenge erreicht.In a drum washing machine for the household with a drum volume in the range of 45 to 65 I, it is appropriate that intended for washing or rinsing amount of water of the free liquor has a predetermined water level of about 45 to 80 mmWs and that the low water level by about 5 to 15 mmWs lower than the specified water level. Thus, for almost all occurring in the household items of laundry, such as, among other things, kitchen cotton, easy care, delicates, and load amounts optimal washing results achieved with low water volume.

In einer vorteilhaften Ausführung wird die Trommel während der Drehphase mit einer Drehzahl von 25 bis 40 1/min gedreht. Dadurch wird einerseits wenig Energie für den Antrieb verwendet und anderseits wird eine schonende Bewegung der Wäsche erreicht.In an advantageous embodiment, the drum is rotated during the rotation phase at a speed of 25 to 40 1 / min. As a result, on the one hand little energy is used for the drive and on the other hand, a gentle movement of the laundry is achieved.

In einer zweckmäßigen Weiterbildung wird die Trommel reversierend gedreht, wobei sie während einer Drehphase jeweils nur in einer einzigen Drehrichtung gedreht wird. Dadurch wird aufgrund des Saugverhaltens von bewegter Wäsche die Saugphase recht kurz gehalten, was insgesamt zu einer kurzen und effektiven Waschphase führt.In an expedient development, the drum is rotated reversing, being rotated during a rotational phase in each case only in a single direction of rotation. As a result, the suction phase is kept quite short due to the suction behavior of moving laundry, resulting in a total of a short and effective washing phase.

Insgesamt ist es zweckmäßig, für die Waschphase eine Dauer von etwa 30 bis 80 Minuten vorzusehen. Die Dauer ist hierbei abhängig von der eingestellten Verschmutzung, der Wäschemenge und der Art des Wäschepostens.Overall, it is expedient to provide a duration of about 30 to 80 minutes for the washing phase. The duration depends on the set pollution, the amount of laundry and the type of laundry.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigen:

Fig. 1:
eine Waschmaschine in einer skizzierten Schnittdarstellung und
Fig. 2a, 2b:
die Trommelbewegung und den Wasserstand während der Waschphase eines Waschprogramms als Diagramm im zeitlichen Ablauf.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. Show it:
Fig. 1:
a washing machine in a sketched sectional view and
2a, 2b:
the drum movement and the water level during the washing phase of a washing program as a diagram in chronological order.

In Fig. 1 ist in rein schematischer Darstellung eine Waschmaschine 1, mit einem Laugenbehälter 2 dargestellt. Die Positions- und Richtungsangaben beziehen sich auf die betriebsgemäße Aufstellposition der Waschmaschine 1. Innerhalb des Laugenbehälters 2 ist eine drehbar gelagerte und über einen elektrischen Motor 13 angetriebene Trommel 3 angeordnet, die die im Laugenbehälter 2 bzw. in der Trommel 3 befindlichen Wäschestücke 8 bzw. Wäscheposten bewegt. Die Trommel 3 ist im vorliegenden Ausführungsbeispiel aus Edelstahl hergestellt und mit einer Vielzahl an Öffnungen für die Durchflutung versehen. Das Gehäuse 4 hat eine Beiadungsöffnung 9, über die das Innere der Trommel 3 durch die Dichtungsmanschette 6 hindurch erreichbar ist. Die Beladungsöffnung 9 ist mittels der Tür 5 verschließbar. Im unteren Bereich des Laugenbehälters 2 ist das Wasser bzw. die Waschflüssigkeit 7, welche zum Reinigen oder Behandeln der Wäsche 8 benötigt wird. Zur Erwärmung oder zum Erhitzen der Flüssigkeit 7 ist im unteren Bereich des Laugenbehälters 2 ein Heizkörper 10 angeordnet. Im oberen Bereich der Maschine 1 ist ein Einlassventil 15 skizziert, welches das Einlaufen des Wassers aus dem Versorgungsnetz steuert. Über den Einspülkasten 11 wird das Wasser über das Verbindungsrohr 14 in den Laugenbehälter 2 geleitet, wobei im Einspülkasten 11 eingegebenes Waschmittel mit in den Laugenbehälter 2 gespült wird. Unterhalb des Laugenbehälters 2 ist eine Ablaufeinrichtung 12 angeordnet, die die verbrauchte Waschflüssigkeit oder das Spülwasser 7 aus dem Laugenbehälter 2 zur Ablaufleitung 16 herausführt, die in der Regel in einen Abwasserkanal mündet. Die Steuereinrichtung 17 steuert den Wassereinlauf 15, die Aktivität der Ablaufeinrichtung 12 und den Antriebsmotor 13, der über das Leistungsteil oder einen Frequenzumrichter 18 bestromt wird, und den Heizkörper 10. Ein Sensor 19, hier ein Drucksensor, steht mit dem Laugenbehälter 2 in Verbindung, um den Wasserstand, zumindest einen unteren Grenzwert L und einen oberen Grenzwert H zu erfassen und als Signal oder Datum der Steuereinrichtung 17 zu übertragen, damit sie entsprechend den Wassereinlauf und das in Fig. 2a und 2b skizzierte Verfahren steuern kann.In Fig. 1 is a purely schematic representation of a washing machine 1, shown with a tub 2. Within the tub 2 a rotatably mounted and driven by an electric motor 13 drum 3 is arranged, which are located in the tub 2 and in the drum 3 garments 8 and 8, respectively. Laundry items moved. The drum 3 is made in the present embodiment of stainless steel and provided with a plurality of openings for the flooding. The housing 4 has a loading opening 9, via which the interior of the drum 3 can be reached through the sealing sleeve 6. The loading opening 9 can be closed by means of the door 5. In the lower region of the tub 2, the water or the washing liquid 7, which is needed for cleaning or treating the laundry 8. For heating or for heating the liquid 7, a radiator 10 is arranged in the lower region of the tub 2. In the upper part of the machine 1, an inlet valve 15 is sketched, which controls the entry of the water from the supply network. About the Einspülkasten 11, the water is passed through the connecting pipe 14 in the tub 2, wherein in the dispenser 11 entered detergent is flushed into the tub 2. Below the tub 2, a drain device 12 is arranged, which brings out the spent washing liquid or the rinse water 7 from the tub 2 to the drain line 16, which usually opens into a sewer. The control device 17 controls the water inlet 15, the activity of the drain device 12 and the drive motor 13, which is energized via the power unit or a frequency converter 18, and the radiator 10. A sensor 19, here a pressure sensor, communicates with the tub 2, to detect the water level, at least a lower limit L and an upper limit H and transmit as a signal or date of the controller 17 so that they correspond to the water inlet and the in Fig. 2a and 2b can control outlined procedures.

In Fig. 2b ist die Trommeldrehzahl (Speed) in einem Diagramm für einen Ausschnitt der Waschphase eines Waschzyklusses bzw. eines Programms zum Waschen von Wäsche 8 (Fig. 1) dargestellt. Auf der gemeinsamen Zeitachse t ist hierbei beispielhaft die Dauer der jeweiligen Phasen und Abschnitte in zeitlichen Abschnitten aufgezeigt.In Fig. 2b is the drum speed (speed) in a diagram for a section of the washing phase of a washing cycle or a program for washing laundry 8 (FIG. Fig. 1 ). The duration of the respective phases and sections in time segments is shown here by way of example on the common time axis t.

Zum Zeitpunkt t=0 befindet sich während der Waschphase Wa im Laugenbehälter 2 ein Wasserstand von etwa 45 mmWs (45 Millimeter Wassersäule). Die Abläufe des Wassereinlassens und der Benetzungsphase sind hierbei nicht genauer skizziert, werden jedoch zu oder vor Beginn der Waschphase Wa durchgeführt. Ab diesem Zeitpunkt t=0 beginnt die Drehphase Ro, in der die Trommel 3 in einer Drehrichtung gedreht wird. In dieser Ausführung wird die Trommel 3 mit einer Drehzahl von 30 1/min gedreht. In Fig. 2a ist zu erkennen, dass ab dem Zeitpunkt t=0 der Wasserstand der freien Flotte sinkt. Sobald der Wasserstand Level den unteren Grenzwert L, in diesem Beispiel 35 mmWS erreicht hat, wird der Drehzyklus Ro beendet, da eine weitere Bewegung der Wäsche keine schmutzlösende Wirkung mehr hätte. Ab diesem Zeitpunkt t=1, also sobald der untere Grenzwert erreicht wurde, beginnt die Drehpause P. Die Dauer der Drehpause P ist hierbei auch vom Wasserstand der freien Flotte eingestellt, wobei der Wasserstand der freien Flotte ansteigt, wenn der Wäscheposten nicht bewegt wird. Diese Phase wird auch als Schmutzaustragsphase bezeichnet, weil das aus dem Gewebe ausdringende Wasser Schmutzteilchen aus dem Gewebe in die freie Flotte ausschwemmt. In Fig. 2a ist zu erkennen, dass ab dem Zeitpunkt t=1 der Wasserstand Level im Laugenbehälter 2 ansteigt, wobei bei Erreichen des oberen Grenzwertes H, der zum Zeitpunkt t=2 erreicht wird, die Pause beendet und ein neuer Drehzyklus Ro gestartet wird. Die Drehrichtung ist hierbei entgegengesetzt gegenüber dem vorherigen Drehzyklus Ro, was mit der Angabe der Drehzahl = - 30 1/min verdeutlicht ist. Für einen Wäscheposten 8 mit stark saugfähiger Wäsche stellt sich für die einzelnen Drehzyklen Ro eine Dauer im Bereich von 5 bis 15 sek. und für die Drehpause P von etwa 5 bis 15 sek. ein. Für einen Wäscheposten 8, der nicht viel Waschflotte binden kann, beispielsweise ein Wäscheposten 8, für den ein Pflegeleicht oder Feinwäsche-Programm vorgesehen ist, stellen sich entsprechend kürzere Zeiten ein.At time t = 0 is during the washing phase Wa in the tub 2, a water level of about 45 mmWs (45 mm water column). The processes of the Water intake and the wetting phase are not outlined here, but are performed at or before the beginning of the washing phase Wa. From this time t = 0, the rotational phase Ro begins, in which the drum 3 is rotated in one direction of rotation. In this embodiment, the drum 3 is rotated at a speed of 30 1 / min. In Fig. 2a It can be seen that from the time t = 0 the water level of the free fleet decreases. As soon as the water level has reached the lower limit value L, in this example 35 mmWS, the rotation cycle Ro is ended, since further movement of the laundry would no longer have a dirt-dissolving effect. From this time t = 1, so as soon as the lower limit was reached, the rotation pause begins P. The duration of the rotation pause P is also set by the water level of the free fleet, the water level of the free fleet increases when the laundry item is not moved. This phase is also referred to as Schmutzaustragsphase, because the water penetrating from the tissue flooded dirt particles from the tissue in the free fleet. In Fig. 2a It can be seen that from the time t = 1, the water level in the tub 2 increases, and when reaching the upper limit H, which is reached at the time t = 2, the break ends and a new rotation cycle Ro is started. The direction of rotation is in this case opposite to the previous rotation cycle Ro, which is indicated by the indication of the speed = - 30 1 / min. For a laundry lot 8 with highly absorbent laundry turns for the individual cycles of rotation Ro a duration in the range of 5 to 15 sec. and for the rotation break P of about 5 to 15 sec. one. For a laundry item 8, which can not bind a lot of wash liquor, for example, a laundry item 8, for which a easy care or delicates program is provided, set correspondingly shorter times.

In Fig. 2a sind der Anstieg und das Sinken des Wasserstands als lineare Funktion aufskizziert, in der Praxis können sie auch gekrümmte Verläufe aufweisen. So kommt es häufig vor, dass zu Beginn einer Drehphase ein stärkeres Absinken des Wasserstandes Level erfolgt, als kurz vor Erreichen des unteren Grenzwertes L. Entsprechend ist der Anstieg des Wasserstandes Level zu Beginn der Drehpause P stärker, als kurz vor Erreichen des oberen Grenzwertes H. Das hier beschriebene Verfahren bezieht sich nicht einschränkend auf Wasser, sondern ebenso auf eine mit Waschmittel oder sonstigen Zusätzen versehene Wasch- oder Spülflüssigkeit. Die Drehphasen Ro und Drehpausen P werden mehrmals wiederholt, bis eine vorgegebene Zeit für die Waschphase WA erreicht ist oder eine vorgegebene Anzahl von Drehzyklen Ro durchgeführt wurden.In Fig. 2a the rise and fall of the water level are sketched as a linear function, in practice they can also have curved courses. Thus, it often happens that at the beginning of a rotation phase, a greater decrease in the water level level occurs than shortly before reaching the lower limit L. Accordingly, the increase in the water level level at the beginning of the rotation P is stronger than shortly before reaching the upper limit H The method described here does not restrictively refer to water but also to a washing or rinsing liquid provided with detergent or other additives. The rotation phases Ro and rotation pauses P are repeated a plurality of times until a predetermined time for the washing phase WA is reached or a predetermined number of rotation cycles Ro have been performed.

Claims (7)

Verfahren zum Waschen eines Wäschepostens (8) in einer Waschmaschine (1) mit einem Laugenbehälter (2), in dem eine Trommel (3) drehbar gelagert und mittels eines Motors (13) angetrieben ist, umfassend eine Waschphase (Wa), in der eine Wassermenge in den Laugenbehälter (2) eingelassen wird, bis ein vorgegebener Wasserstand (H) erreicht ist, und mehrere Drehphasen (Ro), in denen die Trommel (3) mit einer vorgegebenen Drehzahl (Speed) und Dauer gedreht wird, um den Wäscheposten (8) innerhalb der Trommel (3) zu bewegen, und wobei jeweils zwischen den Drehphasen (Ro) Drehpausen (P) liegen,
dadurch gekennzeichnet,
dass die Dauer der einzelnen Drehphasen (Ro) jeweils von einem während der Drehphase (Ro) absinkenden Wasserstand (Level) begrenzt ist und die Dauer der Drehpausen (P) jeweils von einem während der Drehpause (P) ansteigenden Wasserstand (Level) begrenzt ist.Method for washing a laundry item (8) in a washing machine (1) with a tub (2) in which a drum (3) is rotatably mounted and driven by a motor (13) comprising a washing phase (Wa) in which Amount of water in the tub (2) is admitted until a predetermined water level (H) is reached, and several rotational phases (Ro), in which the drum (3) at a predetermined speed and duration is rotated to the laundry item ( 8) within the drum (3), and wherein in each case between the rotational phases (Ro) rotational pauses (P),
characterized,
is that the duration of the different rotational phases (Ro) each descending from a during the rotation phase (Ro) water level (level) is limited and the duration of the rotation pauses (P) respectively by a during the rotation pause (P) rising water level (level) is limited. Verfahren zum Waschen eines Wäschepostens (8) nach Anspruch 1,
dadurch gekennzeichnet,
dass die Dauer der jeweiligen Drehphase (Ro) mittels der Zeit des Absinkens des Wasserstandes (Level) von einem oberen Grenzwert (H) zu einem unteren Grenzwert (L) festgelegt ist und die Dauer der Drehpause (P) mittels der Zeit des Ansteigens des Wasserstandes (Level) nach dem Ende der Drehphase (Ro) bzw. vom unteren Grenzwert (L) zum oberen Grenzwert (H) festgelegt ist.Method for washing a laundry item (8) according to claim 1,
characterized,
in that the duration of the respective rotational phase (Ro) is determined by means of the time of lowering of the water level (Level) from an upper limit value (H) to a lower limit value (L) and the duration of the rotational pause (P) by means of the time of increase of the water level (Level) is defined after the end of the rotation phase (Ro) or from the lower limit value (L) to the upper limit value (H). Verfahren zum Waschen eines Wäschepostens (8) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass die zum Waschen oder Spülen vorgesehene Wassermenge der freien Flotte einen vorgegebenen hohen Wasserstand (H) von etwa 45 bis 80 mmWs aufweist und dass der niedrige Wasserstand (L) um etwa 5 bis 15 mmWs niedriger ist, als der vorgegebene hohe Wasserstand (H) bei einem Trommelvolumen im Bereich von 45 bis 65 I.Method for washing a laundry item (8) according to claim 1 or 2,
characterized,
that the amount of water of the free liquor intended for washing or rinsing has a predetermined high water level (H) of about 45 to 80 mmWs and that the low water level (L) is lower by about 5 to 15 mmWs than the predetermined high water level (H) at a drum volume in the range of 45 to 65 I. Verfahren zum Waschen eines Wäschepostens (8) nach Anspruch 1,
dadurch gekennzeichnet,
dass die Trommel (3) während der Drehphase (Ro) mit einer Drehzahl (Speed) von 25 bis 40 1/min gedreht wird.Method for washing a laundry item (8) according to claim 1,
characterized,
that the drum (3) during the rotation phase (Ro) at a speed (Speed) of 25 to 40 1 / min is rotated. Verfahren zum Waschen eines Wäschepostens (8) nach Anspruch 1 oder 4,
dadurch gekennzeichnet,
dass die Trommel (3) reversierend gedreht wird, wobei sie während einer Drehphase (Ro) jeweils nur in einer einzigen Drehrichtung gedreht wird.Method for washing a laundry item (8) according to claim 1 or 4,
characterized,
that the drum (3) is reversely rotated, wherein it is rotated during a rotational phase (Ro) in each case only in a single direction of rotation. Verfahren zum Waschen eines Wäschepostens (8) nach Anspruch 1,
dadurch gekennzeichnet,
dass die Waschphase (Wa) eine Dauer von etwa 30 bis 80 Minuten hat.Method for washing a laundry item (8) according to claim 1,
characterized,
that the washing phase (Wa) has a duration of about 30 to 80 minutes. Waschmaschine (1) oder Waschtrockner mit einem Gehäuse (4) und einem darin angeordneten, schwingbeweglich befestigten Laugenbehälter (2), in dem eine mit einem Motor (13) antreibbare Trommel (3) drehbar gelagert ist, einem Wasserzulaufventil (15), einer Ablaufeinrichtung (12), einer Erfassungseinrichtung(19) für den Wasserstand (Level) innerhalb des Laugenbehälters (2) und einer Mikroprozessor-Steuereinrichtung (17), die dazu ausgebildet ist, das Wasserzulaufventil (15) und die Ablaufeinrichtung (12) und den Motor (13) in Abhängigkeit des erfassten Wasserstandes (Level) zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 6 zu steuern.Washing machine (1) or washer-dryer with a housing (4) and a suds container (2) mounted in a swinging manner, in which a drum (3) drivable with a motor (13) is rotatably mounted, a water inlet valve (15), a discharge device (12), a level detection means (19) inside the tub (2) and a microprocessor control means (17) adapted to control the water inlet valve (15) and the drainage means (12) and the motor (12). 13) depending on the detected water level (level) for carrying out the method according to one of claims 1 to 6 to control.
EP09007096A 2009-05-28 2009-05-28 Washing machine and method for washing clothes in a washing machine Not-in-force EP2256240B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09007096A EP2256240B1 (en) 2009-05-28 2009-05-28 Washing machine and method for washing clothes in a washing machine
PL09007096T PL2256240T3 (en) 2009-05-28 2009-05-28 Washing machine and method for washing clothes in a washing machine
AT09007096T ATE516398T1 (en) 2009-05-28 2009-05-28 METHOD FOR WASHING LAUNDRY IN A WASHING MACHINE AND WASHING MACHINE
ES09007096T ES2365298T3 (en) 2009-05-28 2009-05-28 PROCEDURE FOR WASHING CLOTHES IN A WASHER AND WASHER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09007096A EP2256240B1 (en) 2009-05-28 2009-05-28 Washing machine and method for washing clothes in a washing machine

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EP2256240A1 true EP2256240A1 (en) 2010-12-01
EP2256240B1 EP2256240B1 (en) 2011-07-13

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DE19538291A1 (en) * 1995-10-14 1997-04-17 Aeg Hausgeraete Gmbh Registering water absorption degree of washing
EP0787848A1 (en) * 1996-02-05 1997-08-06 Merloni Elettrodomestici S.p.A. Method for determining quantity and/or type of fabric introduced in a laundry washing machine
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ATE516398T1 (en) 2011-07-15
ES2365298T3 (en) 2011-09-28
PL2256240T3 (en) 2011-10-31
EP2256240B1 (en) 2011-07-13

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