EP1871941B1 - Method for washing shrinkable textiles and a washing machine for carrying out said method - Google Patents

Method for washing shrinkable textiles and a washing machine for carrying out said method Download PDF

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Publication number
EP1871941B1
EP1871941B1 EP06701673A EP06701673A EP1871941B1 EP 1871941 B1 EP1871941 B1 EP 1871941B1 EP 06701673 A EP06701673 A EP 06701673A EP 06701673 A EP06701673 A EP 06701673A EP 1871941 B1 EP1871941 B1 EP 1871941B1
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EP
European Patent Office
Prior art keywords
switch
washing
laundry
laundry drum
motor
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EP06701673A
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German (de)
French (fr)
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EP1871941A1 (en
Inventor
Oliver RÜDIGER
Gundula Czyzewski
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Priority to SI200630105T priority Critical patent/SI1871941T1/en
Publication of EP1871941A1 publication Critical patent/EP1871941A1/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
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • 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 from textiles susceptible to shrinkage in a program-controlled washing machine, which during the treatment is moved in a process section adapted to the needs of the textiles in a rotatably mounted laundry drum with the passage of water and, if appropriate, detergent. and turn-off duration of a motor that rotates the laundry drum, and a washing machine for performing this method.
  • a method for washing wool is known, which is a shrinkage-prone type of textile.
  • the laundry drum is driven during successive phases of movement and rest with a motor which accelerates the laundry drum over a ramp to a speed of 45 1 / min during the very short movement phases, wherein in successive phases of movement, the direction of rotation of the laundry drum changes.
  • the duration of each resting phase is a multiple of the duration of the movement phases.
  • a disadvantage of such a method is that the textiles are not completely wetted with water or alkali even after several phases of motion and are not sufficiently flooded for the purpose of cleaning.
  • EP 475 462 A1 Known method for washing a shrink-sensitive laundry items a laundry drum of a washing machine is reversibly driven in a feeder.
  • the laundry drum is equipped with so-called carriers with scooping devices for better moisture through the laundry, which are designed such that water is preferably absorbed in a Schöpfmosraum of the drivers and in the reverse direction of rotation, the carriers are emptied.
  • the rhythm of rotation of the laundry drum is adapted to the scooping device, with the laundry drum in the feeder with a duty cycle of 30% is operated.
  • EP 475 462 A1 discloses the use of various rotary rhythms in which the laundry drum is driven in the scoop and reverse directions with the same or different percent duty cycle ratios.
  • Such a washing machine has a laundry drum, which consists of two mutually rotatable halves.
  • the washing processes are divided into several process sections in which, depending on a selected program, the laundry drum is operated with different switch-on durations. Within such process sections, the drum halves are driven either in the same direction or counter-rotating.
  • One of the disclosed methods is suitable for washing shrink-sensitive textiles in which, in a main washing process, the drum halves are driven in the same direction in a first phase with a low duty cycle and in a subsequent phase with a very short duty cycle. This is followed by another phase, in which the drum halves are operated in opposite directions with a higher duty cycle compared to the previous phase.
  • the invention is therefore an object of the invention to provide a method and a washing machine for performing the method that during a tailored to the needs of shrunken textiles washing process, the textiles are wetted and flooded early with the optimum amount of water or alkali and thus the Washing process for shrinkable textiles is optimized.
  • the method described in the introduction is formed by the ratio of the switch-on duration to the possible switch-on duration of the motor during of the process section is smaller in sections or continuously.
  • the shrinkage sensitivity of the textiles only rises sharply with the duration of treatment. Therefore, it is particularly advantageous to move the textile relatively strongly at the beginning of the washing process, whereby rapid wetting and good flooding of the textile with water or alkali can be achieved without causing excessive shrinkage of the textile.
  • the shrinkage sensitivity increases due to the increasing duration of the action and, if appropriate, due to an increasing treatment temperature of the water or the alkali. Therefore, advantageously, in the inventive method, the degree of movement of the fabric is reduced with increasing treatment time in accordance with the increase in shrinkage sensitivity.
  • Such a reduction of the movement of the textiles is achieved by reducing the ratio of the duty cycle to the possible duty cycle of the engine. This means that the duration of the respective switch-on times of the engine is reduced and / or the duration of the respective switch-off times is extended during the washing process progress.
  • the rapid wetting of the textiles is advantageously assisted by raining the scooped water over the laundry during rotation of the laundry drum, on the inside of her coat a means for scooping the water from the bottom of a tub is arranged, if the scoop is located in one position higher than the laundry items.
  • the textiles are not only wetted by the free liquor, but they are treated on all sides with water or alkali.
  • the laundry drum is rotated during the process section exclusively in one direction or with alternating directions of rotation, thereby advantageously a rearrangement of the textiles within the Wäschepostens is achieved so that all laundry is wetted evenly.
  • the rotation of the laundry drum in the direction in the effectiveness of the scoop takes place.
  • the scooping device is optimally filled with water or liquor when the laundry drum is rotated, and when the scooping device is above the laundry item, the quantity of water taken in from the scooping device rains on the textiles.
  • the inventive method is advantageously developed in an operation of the laundry drum, which has a scooping device with an optimal effectiveness for one direction of rotation, that the laundry drum is rotated in the direction of effectiveness of the scoop with a duty ratio of this direction, which is greater than the duty cycle of the opposite direction is.
  • a development can also be clearly supported in the operation of the laundry drum with changing directions of rapid wetting of the laundry costs through the optimal use of the scooping device.
  • the rapid wetting and flooding of the textiles is further promoted particularly advantageous in that at the beginning of the washing process, the duty cycle is greater than 12%.
  • the duty cycle is greater than 12%.
  • a duty cycle of less than 5% is selected in a further embodiment of the method at the end of the washing process. It has been found that just at the end of the washing process, the shrinkage sensitivity has increased so much due to the previous and ongoing softening of the textile, that with such a small movement of the textiles an excessive shrinkage of the same is effectively avoided. Since at the beginning of the washing process, the textiles are treated with a high proportion of movement, despite the slight movement at the end of the washing process required for the cleaning absolute Waschmechanikeintrag or the required mechanical energy ensures optimal cleaning and low shrinkage of the textiles achieved.
  • drum rotation in coordination with the design features of the tub and / or the laundry drum at a speed of 15 to 35 1 / min for all possible embodiments of the method according to the invention is particularly advantageous.
  • the exact speed value can be optimized depending on the geometry, function of the driver and the preferred direction of rotation.
  • the drum movement in coordination with the design features of the tub and / or the laundry drum with a break of 10 to 60 seconds has been found to be particularly suitable.
  • the wash liquor has the opportunity to act sufficiently intense on the textiles.
  • a washing machine has an in Fig. 1 illustrated in a Lauge actuallyer 2 rotatably mounted laundry drum 1 and a motor, not shown, which drives the laundry drum 1.
  • a motor not shown
  • the degree of movement or the washing mechanism of the laundry depends on the geometric dimensions of the laundry drum 1 and the driver 3 and the speed of the laundry drum 1.
  • the drum diameter of the washing machine of the preferred embodiment is 50 cm. There are also other drum diameter possible, in which case in particular the drum speed must be adjusted accordingly for each drum diameter.
  • Fig. 2 is a qualitative course of the shrinkage sensitivity SE of a textile, such as wool, depending on the exposure time t during a washing process shown.
  • the exposure time t or the duration t of a washing process is plotted on the x-axis of the diagram and the shrinkage sensitivity SE is plotted on the y-axis.
  • the shrinkage sensitivity SE indicates the capacity of a garment to what degree the length dimensions of the garment change during its treatment.
  • the shrinkage sensitivity SE is expressed as a ratio of the instantaneous linear expansion to the longitudinal extension of the laundry prior to the treatment thereof in percent.
  • the shrinkage of the textiles by the entry of mechanical Energy influences, for example in the form of textile movement. Therefore, the parameters of the speed of the laundry drum 1 and the duty cycle of the engine, which significantly influence the textile movement to match the shrinkage sensitivity SE of the textiles.
  • the shrinkage of the textile is also influenced by the temperature of the treatment medium.
  • the shrinkage sensitivity SE is still relatively low at the beginning of the washing process, since the individual fibers are not yet swollen due to the low exposure time.
  • the otherwise very sensitive to shrinkage textile can be moved more, without causing excessive shrinkage of the textile by this movement.
  • the washing machine therefore has a program control device with means for controlling the motor and for controlling the course of the drum speed according to the FIGS. 4 or 5 ,
  • the motor is turned on during the phase A successively for the duration T_e of 12 sec and off for 48 sec T_a, the motor is controlled such that during the switch-on the laundry drum 1 at a speed of 22 1 / min turns.
  • shrinkage sensitivity ED is in the method according to Fig. 4
  • the switch-on duration of the motor T_e is shortened to 7.2 sec (or to 1.8 sec during phase C) and the switch-off duration T_a correspondingly to 52.8 sec (or to 58.2 sec during phase C) ) extended.
  • a duty ratio ED of 12%
  • a duty ratio of 3% is required for the process designed in this way.
  • the laundry drum is provided with a constant duty ratio during the washing process ED moved by 12%.
  • the resulting total acting on the textile mechanical energy is about as large as in the embodiment of the invention.
  • the change in the duty ratio ED during the washing process in the preferred embodiment according to FIG Fig. 4 is in the diagram according to Fig. 3 (solid line) shown.
  • the ratio of the duty cycle ED during the duration t of the washing process also according to the dashed line in Fig. 3 be continuously reduced.
  • the laundry drum 1 has in Fig. 1 illustrated Wäschemit Meeting 3, which are equipped with scooping devices 4 and have on their ridge sections holes 5, is rained by the water from the lower portion of the tub 2 scooped water over the laundry items 6 when the driver 3, as the driver 3.1 in the illustration, by turning the laundry drum 1 in the direction of the arrow 7 in a lying above the laundry item 6 device.
  • the laundry drum 1 rotates exclusively in the direction of arrow 7, thus the effectiveness of the scooping device is used optimally and the laundry items 6 on all sides acted upon with water or brine. As a result, the rapid wetting and flooding of the textiles of the laundry items 6 is advantageously supported.
  • the washing drum 1 rotates with alternating directions of rotation at a speed of +33 or -33 1 / min.
  • the duty cycle T_e1 of the motor with 15 sec for the rotation of the laundry drum 1 in the direction of in Fig. 1 in the direction of the efficiency of the scooping device 4 longer than the duty cycle T_e2 with 9 sec for the rotation of the laundry drum 1 in the opposite direction.
  • the switch-off durations T_a1 are 45 sec and T_a2 51 sec.
  • the duty ratio ED_1 of the motor for the rotation of the laundry drum 1 in the direction of the efficiency of the scooping device 4 is 25% greater than the duty cycle ED_2 of the counterclockwise direction of 15%.
  • the switch-on and switch-off durations T_e1, T_a1, T_e2 and T_a2 are selected in the second exemplary embodiment such that the average switch-on duration ratio based on the entire phase A is 20%, as in the first exemplary embodiment.
  • the turn-on and turn-off times T_e and T_a of the engine and the rotational speeds of the laundry drum 1 are not limited to the numerical values given for the two exemplary embodiments in the inventive method, but they can take into account the needs of the textiles to be treated and the geometric dimensions of the laundry drum. 1 and the driver 3 are varied within the claimed ranges.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

A method for washing shrinkable textiles in a program-controlled washing machine consisting in washing textiles in a rotatably mounted washing drum according to a process corresponding to textile requirements with a water flow and possibly washing agents, wherein a starting and operating time of a drum driving motor are predefined. A washing machine for carrying out said method is also disclosed. At the beginning of the washing process, the motor operates with a staring time rate which is greater than a possible staring time and which decreases step by step or continuously during the process in order to reduce a mechanical energy applied to the textile according to the shrinkability thereof which strongly increases along with the increase of the washing process time. In such a way, the textile is pre-wetted with an optimal water quantity or soapy solution without producing the excessive textile shrinkage.

Description

Die Erfindung betrifft ein Verfahren zum Waschen eines Wäschepostens aus schrumpfgefährdeten Textilien in einer programmgesteuerten Waschmaschine, der während der Behandlung in einem auf die Bedürfnisse der Textilien abgestimmten Prozessabschnitt in einer drehbar gelagerten Wäschetrommel unter Durchflutung von Wasser und gegebenenfalls Waschmittel bewegt wird, bei dem die Einschalt- und Ausschaltdauer eines Motors vorgegeben wird, der die Wäschetrommel dreht, und eine Waschmaschine zur Durchführung dieses Verfahrens.The invention relates to a method for washing a laundry item from textiles susceptible to shrinkage in a program-controlled washing machine, which during the treatment is moved in a process section adapted to the needs of the textiles in a rotatably mounted laundry drum with the passage of water and, if appropriate, detergent. and turn-off duration of a motor that rotates the laundry drum, and a washing machine for performing this method.

Aus DE 37 03 860 A1 ist ein Verfahren zum Waschen von Wolle bekannt, das eine schrumpfgefährdete Textilart ist. Bei diesem Verfahren wird die Wäschetrommel während aufeinander folgenden Bewegungs- und Ruhephasen mit einem Motor angetrieben, der die Wäschetrommel während der sehr kurzen Bewegungsphasen über eine Rampe auf eine Drehzahl von 45 1/min beschleunigt, wobei bei aufeinander folgenden Bewegungsphasen die Drehrichtung der Wäschetrommel wechselt. Die Zeitdauer der jeweiligen Ruhephasen beträgt ein Vielfaches der Dauer der Bewegungsphasen.Out DE 37 03 860 A1 For example, a method for washing wool is known, which is a shrinkage-prone type of textile. In this method, the laundry drum is driven during successive phases of movement and rest with a motor which accelerates the laundry drum over a ramp to a speed of 45 1 / min during the very short movement phases, wherein in successive phases of movement, the direction of rotation of the laundry drum changes. The duration of each resting phase is a multiple of the duration of the movement phases.

Durch die sehr kurzen Bewegungsphasen und dem speziellen Anlauf des Motors soll die mechanische Belastung des Textils und somit der Schrumpf desselben verringert werden. Nachteilig an einem solchen Verfahren ist, dass die Textilien auch nach mehreren Bewegungsphasen nicht vollständig mit Wasser oder Lauge benetzt und zum Zwecke der Reinigung nicht genügend durchflutet werden.Due to the very short movement phases and the special start-up of the engine, the mechanical load on the textile and thus the shrinkage of the same should be reduced. A disadvantage of such a method is that the textiles are not completely wetted with water or alkali even after several phases of motion and are not sufficiently flooded for the purpose of cleaning.

Bei einem aus EP 475 462 A1 bekannten Verfahren zum Waschen eines schrumpfempfindlichen Wäschepostens wird eine Wäschetrommel einer Waschmaschine in einem Feingang reversierend angetrieben. Die Wäschetrommel ist unter so genannten Mitnehmern mit Schöpfeinrichtungen zur besseren Durchfeuchtung der Wäsche ausgerüstet, die derart ausgebildet sind, dass Wasser bevorzugt in einer Schöpfdrehrichtung von den Mitnehmern aufgenommen wird und in der Gegendrehrichtung die Mitnehmer entleert werden. Der Drehrythmus der Wäschetrommel ist auf die Schöpfeinrichtung angepasst, wobei die Wäschetrommel in dem Feingang mit einer Einschaltdauer von 30% betrieben wird. EP 475 462 A1 offenbart die Verwendung verschiedener Drehrythmen, bei denen die Wäschetrommel in Schöpfdrehrichtung und in Gegendrehrichtung mit denselben oder mit unterschiedlichen prozentualen Einschaltdauerverhältnissen angetrieben wird.At one off EP 475 462 A1 Known method for washing a shrink-sensitive laundry items a laundry drum of a washing machine is reversibly driven in a feeder. The laundry drum is equipped with so-called carriers with scooping devices for better moisture through the laundry, which are designed such that water is preferably absorbed in a Schöpfdrehrichtung of the drivers and in the reverse direction of rotation, the carriers are emptied. The rhythm of rotation of the laundry drum is adapted to the scooping device, with the laundry drum in the feeder with a duty cycle of 30% is operated. EP 475 462 A1 discloses the use of various rotary rhythms in which the laundry drum is driven in the scoop and reverse directions with the same or different percent duty cycle ratios.

Eine weitere Waschmaschine und an unterschiedliche Textilarten angepasste Verfahren zum Waschen von Wäsche ist aus US 2003/0061840 A1 bekannt. Eine solche Waschmaschine weist eine Wäschetrommel auf, die aus zwei zueinander drehbaren Hälften besteht. Die Waschverfahren sind in mehrere Prozessabschnitte aufgeteilt, in welchen abhängig von einem gewählten Programm die Wäschetrommel mit unterschiedlichen Einschaltdauern betrieben wird. Innerhalb solcher Prozessabschnitte werden die Trommelhälften entweder gleichsinnig oder gegenläufig drehend angetrieben. Eines der offenbarten Verfahren eignet sich zum Waschen von schrumpfempfindlichen Textilien, bei dem in einem Hauptwaschprozess die Trommelhälften gleichsinnig in einer ersten Phase mit einer geringen Einschaltdauer und in einer daran anschließenden Phase mit einer sehr geringen Einschaltdauer angetrieben werden. Es folgt eine weitere Phase, in der die Trommelhälften gegenläufig mit einer gegenüber der vorangegangenen Phase höheren Einschaltdauer betrieben werden.Another washing machine and adapted to different types of textile process for washing laundry is out US 2003/0061840 A1 known. Such a washing machine has a laundry drum, which consists of two mutually rotatable halves. The washing processes are divided into several process sections in which, depending on a selected program, the laundry drum is operated with different switch-on durations. Within such process sections, the drum halves are driven either in the same direction or counter-rotating. One of the disclosed methods is suitable for washing shrink-sensitive textiles in which, in a main washing process, the drum halves are driven in the same direction in a first phase with a low duty cycle and in a subsequent phase with a very short duty cycle. This is followed by another phase, in which the drum halves are operated in opposite directions with a higher duty cycle compared to the previous phase.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Waschmaschine zur Durchführung des Verfahrens zu schaffen, dass während eines auf die Bedürfnisse von schrumpfgefährdeten Textilien abgestimmten Waschprozess die Textilien frühzeitig mit der optimalen Menge an Wasser bzw. Lauge benetzt und durchflutet werden und damit der Waschprozess für schrumpfgefährdete Textilien optimiert wird.The invention is therefore an object of the invention to provide a method and a washing machine for performing the method that during a tailored to the needs of shrunken textiles washing process, the textiles are wetted and flooded early with the optimum amount of water or alkali and thus the Washing process for shrinkable textiles is optimized.

Erfindungsgemäß ist das eingangs beschriebene Verfahren dadurch ausgebildet, dass das Verhältnis der Einschaltdauer zu der möglichen Einschaltdauer des Motors während des Prozessabschnitts abschnittsweise oder kontinuierlich kleiner wird.According to the invention, the method described in the introduction is formed by the ratio of the switch-on duration to the possible switch-on duration of the motor during of the process section is smaller in sections or continuously.

Es hat sich nämlich gezeigt, dass das die Schrumpfempfindlichkeit der Textilien erst mit der Behandlungsdauer stark ansteigt. Daher ist es besonders vorteilhaft das Textil zu Beginn des Waschprozesses relativ stark zu bewegen, wodurch eine schnelle Benetzung und gute Durchflutung des Textils mit Wasser oder Lauge erreicht werden kann, ohne ein übermäßiges Schrumpfen des Textils zu bewirken. Im weiteren Verlauf des Waschprozesses steigt die Schrumpfempfindlichkeit durch die zunehmende Einwirkdauer und gegebenenfalls durch eine steigende Behandlungstemperatur des Wassers oder der Lauge. Daher wird vorteilhaft bei dem erfinderischen Verfahren der Grad der Bewegung des Textils mit zunehmender Behandlungsdauer entsprechend der Zunahme der Schrumpfempfindlichkeit verringert. Eine solche Verringerung der Bewegung der Textilien wird durch die Reduzierung des Verhältnisses der Einschaltdauer zu der möglichen Einschaltdauer des Motors erreicht. Das heißt, dass die Dauer der jeweiligen Einschaltzeiten des Motors verringert und/oder die Dauer der jeweiligen Ausschaltzeiten während des Waschprozessfortschritts verlängert werden.It has been shown that the shrinkage sensitivity of the textiles only rises sharply with the duration of treatment. Therefore, it is particularly advantageous to move the textile relatively strongly at the beginning of the washing process, whereby rapid wetting and good flooding of the textile with water or alkali can be achieved without causing excessive shrinkage of the textile. In the further course of the washing process, the shrinkage sensitivity increases due to the increasing duration of the action and, if appropriate, due to an increasing treatment temperature of the water or the alkali. Therefore, advantageously, in the inventive method, the degree of movement of the fabric is reduced with increasing treatment time in accordance with the increase in shrinkage sensitivity. Such a reduction of the movement of the textiles is achieved by reducing the ratio of the duty cycle to the possible duty cycle of the engine. This means that the duration of the respective switch-on times of the engine is reduced and / or the duration of the respective switch-off times is extended during the washing process progress.

In einer Ausgestaltung der Erfindung wird die schnelle Benetzung der Textilien vorteilhaft unterstützt, indem während der Drehung der Wäschetrommel, auf deren Innenseite ihres Mantels eine Einrichtung zum Schöpfen des Wassers aus dem unteren Bereich eines Laugenbehälters angeordnet ist, das geschöpfte Wasser über der Wäsche abregnet, wenn die Schöpfeinrichtung sich in jeweils einer Position höher als der Wäscheposten befindet. Somit werden die Textilien nicht nur durch die freie Flotte benetzt, sondern sie werden allseitig mit Wasser oder Lauge beaufschlagt.In one embodiment of the invention, the rapid wetting of the textiles is advantageously assisted by raining the scooped water over the laundry during rotation of the laundry drum, on the inside of her coat a means for scooping the water from the bottom of a tub is arranged, if the scoop is located in one position higher than the laundry items. Thus, the textiles are not only wetted by the free liquor, but they are treated on all sides with water or alkali.

Gemäß der Weiterbildungen der Erfindung nach Anspruch 3 oder 5 wird die Wäschetrommel während des Prozessabschnitts ausschließlich in einer Richtung oder mit abwechselnden Drehrichtungen gedreht, wodurch vorteilhaft eine Umlagerung der Textilien innerhalb des Wäschepostens erzielt wird, damit alle Wäschestücke gleichmäßig benetzt werden.According to the developments of the invention according to claim 3 or 5, the laundry drum is rotated during the process section exclusively in one direction or with alternating directions of rotation, thereby advantageously a rearrangement of the textiles within the Wäschepostens is achieved so that all laundry is wetted evenly.

Es hat sich gezeigt, dass bei einem Drehen der Wäschetrommel mit einer relativ geringen Drehzahl von beispielsweise 15 bis 25 1/min eine Umlagerung der Wäsche besonders gut erzielt wird, wenn die Wäschetrommel ausschließlich in einer Drehrichtung bewegt wird, da die Textilien bei einer solchen Trommeldrehzahl in der Wäschetrommel nur wenig von den am Trommelmantel angeordneten Mitnehmern angehoben werden. Die Wäschestücke werden bei einer gleichbleibenden Drehrichtung somit allmählich weiterbewegt und umgelagert, wohingegen ein Drehen der Trommel bei einer solchen Drehzahl in entgegengesetzter Drehrichtung die Wäschestücke an den ursprünglichen Ort zurückbewegen würde.It has been shown that, when the laundry drum is rotated at a relatively low speed of, for example, 15 to 25 l / min, a rearrangement of the laundry is achieved particularly well if the laundry drum is moved exclusively in one direction of rotation, since the textiles are lifted at such a drum speed in the laundry drum little of the arranged on the drum shell drivers. The laundry items are thus gradually moved and relocated at a constant rotational direction, whereas rotating the drum at such a rotational speed in the opposite direction of rotation would move the laundry items back to the original location.

Dem gegenüber ist ein Drehen der Wäschetrommel mit wechselnden Drehrichtungen mit einer Drehzahl von beispielsweise 25 bis 35 1/min günstiger für eine schnelle Umlagerung der Wäschestücke innerhalb des Wäschepostens, da bei solchen Drehzahlen die Wäschestücke durch die Mitnehmer weiter angehoben werden und von dem Trommelmantel zum Grund der Wäschetrommel zurückfallen, wodurch eine zufällige Wäscheverteilung erzielt und der Wäscheposten somit besonders schnell umverteilt wird.In contrast, turning the laundry drum with changing directions of rotation at a speed of, for example, 25 to 35 1 / min cheaper for a quick transfer of laundry within the Wäschepostens because at such speeds, the laundry items are further raised by the driver and the drum shell to the bottom the laundry drum fall back, whereby a random distribution of laundry achieved and the laundry items is thus redistributed very quickly.

In einer weiteren vorteilhaften Ausgestaltung des Verfahrens erfolgt die Drehung der Wäschetrommel in der Richtung in der Wirksamkeit der Schöpfeinrichtung. Dadurch wird die Schöpfeinrichtung beim Drehen der Wäschetrommel optimal mit Wasser oder Lauge gefüllt und wenn die Schöpfeinrichtung sich oberhalb des Wäschepostens befindet, regnet die aufgenommene Wassermenge aus der Schöpfeinrichtung auf die Textilien ab.In a further advantageous embodiment of the method, the rotation of the laundry drum in the direction in the effectiveness of the scoop takes place. As a result, the scooping device is optimally filled with water or liquor when the laundry drum is rotated, and when the scooping device is above the laundry item, the quantity of water taken in from the scooping device rains on the textiles.

Das erfinderische Verfahren wird bei einem Betrieb der Wäschetrommel, die eine Schöpfeinrichtung mit einer optimalen Wirksamkeit für eine Drehrichtung hat, dadurch vorteilhaft weitergebildet, dass die Wäschetrommel in Richtung der Wirksamkeit der Schöpfeinrichtung mit einem Einschaltdauerverhältnis dieser Richtung gedreht wird, das größer als das Einschaltdauerverhältnis der Gegenrichtung ist. Durch eine solche Weiterbildung kann auch bei dem Betrieb der Wäschetrommel mit wechselnden Drehrichtungen ein schnelles Benetzen des Wäschepostens durch die optimale Nutzung der Schöpfeinrichtung deutlich unterstützt werden.The inventive method is advantageously developed in an operation of the laundry drum, which has a scooping device with an optimal effectiveness for one direction of rotation, that the laundry drum is rotated in the direction of effectiveness of the scoop with a duty ratio of this direction, which is greater than the duty cycle of the opposite direction is. Such a development can also be clearly supported in the operation of the laundry drum with changing directions of rapid wetting of the laundry costs through the optimal use of the scooping device.

Die schnelle Benetzung und Durchflutung der Textilien wird weiter besonders vorteilhaft dadurch gefördert, dass zu Beginn des Waschprozesses das Einschaltdauerverhältnis größer als 12% ist. Durch diese Ausgestaltung wird eine Bewegungsarmut zu Beginn des Waschprozesses vermieden und eine intensive Durchdringung des Textils mit Wasser oder Lauge erzielt. Der hohe Bewegungsanteil der Textilien bewirkt zusätzliche eine hohe Wäschemechanik, die für die Reinigung des Textils besonders vorteilhaft ist.The rapid wetting and flooding of the textiles is further promoted particularly advantageous in that at the beginning of the washing process, the duty cycle is greater than 12%. By this embodiment, a lack of movement at the beginning of the washing process is avoided and achieved an intensive penetration of the textile with water or alkali. The high proportion of movement of textiles causes additional high Laundry mechanics, which is particularly advantageous for the cleaning of the textile.

Zur Vermeidung des Schrumpfes der Textilien wird in einer weiteren Ausgestaltung des Verfahrens zum Ende des Waschprozesses ein Einschaltdauerverhältnis von weniger als 5% gewählt. Es hat sich gezeigt, dass gerade zum Ende des Waschprozesses die Schrumpfempfindlichkeit durch die vorangegangene und noch andauernde Aufweichung des Textils so stark zugenommen hat, dass bei einer so geringen Bewegung der Textilien ein übermäßiges Schrumpfen derselben wirksam vermieden wird. Da zu Beginn des Waschprozesses die Textilien mit einem hohen Bewegungsanteil behandelt werden, wird trotz der geringen Bewegung am Ende des Waschprozesses der für die Reinigung erforderliche absolute Waschmechanikeintrag bzw. die erforderliche mechanische Energie gewährleistet und eine optimale Reinigung bei geringem Schrumpf der Textilien erzielt.To avoid the shrinkage of the textiles, a duty cycle of less than 5% is selected in a further embodiment of the method at the end of the washing process. It has been found that just at the end of the washing process, the shrinkage sensitivity has increased so much due to the previous and ongoing softening of the textile, that with such a small movement of the textiles an excessive shrinkage of the same is effectively avoided. Since at the beginning of the washing process, the textiles are treated with a high proportion of movement, despite the slight movement at the end of the washing process required for the cleaning absolute Waschmechanikeintrag or the required mechanical energy ensures optimal cleaning and low shrinkage of the textiles achieved.

Dazu hat sich gezeigt, dass die Trommeldrehung in Abstimmung mit den Konstruktionsmerkmalen des Laugenbehälters und/oder der Wäschetrommel mit einer Drehzahl von 15 bis 35 1/min für alle möglichen Ausgestaltungen des erfindungsgemäßen Verfahrens besonders vorteilhaft ist. Der genaue Drehzahlwert kann abhängig von der Geometrie, Funktion der Mitnehmer und der bevorzugten Drehrichtung noch optimiert werden.It has been shown that the drum rotation in coordination with the design features of the tub and / or the laundry drum at a speed of 15 to 35 1 / min for all possible embodiments of the method according to the invention is particularly advantageous. The exact speed value can be optimized depending on the geometry, function of the driver and the preferred direction of rotation.

Entsprechend hat sich die Trommelbewegung in Abstimmung mit den Konstruktionsmerkmalen des Laugenbehälters und/oder der Wäschetrommel mit einer Pause von 10 bis 60 Sekunden als besonders geeignet erwiesen. Dadurch hat die Waschlauge Gelegenheit, ausreichend intensiv auf die Textilien einzuwirken.Accordingly, the drum movement in coordination with the design features of the tub and / or the laundry drum with a break of 10 to 60 seconds has been found to be particularly suitable. As a result, the wash liquor has the opportunity to act sufficiently intense on the textiles.

Die erfindungsgemäße Ausgestaltung des Verfahrens sowie der Waschmaschine zur Durchführung desselben sind nachstehend anhand zweier Ausführungsbeispiele für einen Bewegungsablauf einer Wäschetrommel während eines Waschprozesses näher erläutert. Es zeigen

Fig. 1
ein schematisches Schnittbild durch einen Laugenbehälter mit einer Wäschetrommel,
Fig. 2
einen qualitativen Funktionsverlauf der Schrumpfempfindlichkeit in Abhängigkeit der Einwirkdauer eines Textils während des Waschprozesses,
Fig. 3
einen qualitativen Funktionsverlauf des Einschaltdauerverhältnisses in Abhängigkeit der Waschprozessdauer,
Fig.4
einen erfindungsgemäßen unidirektionalen Bewegungsablauf der Wäschetrommel anhand eines Diagramms und
Fig. 5
einen erfindungsgemäßen Bewegungsabschnitt der Wäschetrommel mit wechselnden Drehrichtungen anhand eines Diagramms.
The inventive design of the method and the washing machine for performing the same are explained in more detail below with reference to two embodiments for a movement of a laundry drum during a washing process. Show it
Fig. 1
a schematic sectional view through a tub with a laundry drum,
Fig. 2
a qualitative functional progression of the shrinkage sensitivity as a function of the duration of action of a textile during the washing process,
Fig. 3
a qualitative functional course of the duty cycle as a function of the washing process duration,
Figure 4
a unidirectional movement sequence of the laundry drum according to the invention based on a diagram and
Fig. 5
a movement section of the laundry drum according to the invention with changing directions of rotation based on a diagram.

Eine Waschmaschine hat eine in Fig. 1 dargestellte in einem Laugebehälter 2 drehbar gelagerte Wäschetrommel 1 und einen nicht dargestellten Motor, der die Wäschetrommel 1 antreibt. An der Innenseite des Mantels der Wäschetrommel 1 sind drei Wäschemitnehmer 3 befestigt, die bei einer Drehung der Wäschetrommel 1 bewirken, dass die Wäschestücke des Wäschepostens 6 vom Grund der Wäschetrommel 1 angehoben werden und aufgrund der Schwerkraft nach dem Anheben zurückfallen. Somit wird die für die Reinigung erforderliche Waschmechanik auf die Wäschestücke bewirkt. Der Grad der Bewegung bzw. der Waschmechanik der Wäschestücke hängt von den geometrischen Abmessungen der Wäschetrommel 1 und der Mitnehmer 3 sowie der Drehzahl der Wäschetrommel 1 ab. Der Trommeldurchmesser der Waschmaschine des bevorzugten Ausführungsbeispiels beträgt 50 cm. Es sind auch andere Trommeldurchmesser möglich, wobei dann insbesondere die Trommeldrehzahl entsprechend für den jeweiligen Trommeldurchmesser angepasst werden muss.A washing machine has an in Fig. 1 illustrated in a Laugebehälter 2 rotatably mounted laundry drum 1 and a motor, not shown, which drives the laundry drum 1. On the inside of the jacket of the laundry drum 1, three clothes hoppers 3 are fastened, which, when the laundry drum 1 rotates, cause the laundry items of the laundry item 6 to be raised from the bottom of the laundry drum 1 and fall back due to the force of gravity after the lifting. Thus, the washing mechanics required for cleaning is effected on the laundry items. The degree of movement or the washing mechanism of the laundry depends on the geometric dimensions of the laundry drum 1 and the driver 3 and the speed of the laundry drum 1. The drum diameter of the washing machine of the preferred embodiment is 50 cm. There are also other drum diameter possible, in which case in particular the drum speed must be adjusted accordingly for each drum diameter.

In Fig. 2 wird qualitativ ein Verlauf der Schrumpfempfindlichkeit SE von einem Textil, beispielsweise Wolle, in Abhängigkeit der Einwirkdauer t während eines Waschprozesses gezeigt. Dabei ist auf der x-Achse des Diagramms die Einwirkdauer t bzw. die Dauer t eines Waschprozesses und auf der y-Achse die Schrumpfempfindlichkeit SE aufgetragen. Die Schrumpfempfindlichkeit SE gibt das Vermögen eines Wäschestückes an, in welchem Grad sich die Längenausdehnungen des Wäschestücks während der Behandlung desselben ändern. Dabei wird die Schrumpfempfindlichkeit SE als eine Verhältniszahl der momentanen Längenausdehnung zu der Längenausdehnung des Wäschestücks vor der Behandlung desselben in Prozent angegeben.In Fig. 2 is a qualitative course of the shrinkage sensitivity SE of a textile, such as wool, depending on the exposure time t during a washing process shown. In this case, the exposure time t or the duration t of a washing process is plotted on the x-axis of the diagram and the shrinkage sensitivity SE is plotted on the y-axis. The shrinkage sensitivity SE indicates the capacity of a garment to what degree the length dimensions of the garment change during its treatment. In this case, the shrinkage sensitivity SE is expressed as a ratio of the instantaneous linear expansion to the longitudinal extension of the laundry prior to the treatment thereof in percent.

Neben der Einwirkdauer wird der Schrumpf der Textilien durch den Eintrag an mechanischer Energie beeinflusst, beispielsweise in Form von Textilbewegung. Daher sind die Parameter der Drehzahl der Wäschetrommel 1 und der Einschaltdauer des Motors, die die Textilbewegung maßgeblich beeinflussen, auf die Schrumpfempfindlichkeit SE der Textilien abzustimmen. Neben der Textilbewegung wird der Schrumpf des Textils auch durch die Temperatur des Behandlungsmedium beeinflusst.In addition to the exposure time, the shrinkage of the textiles by the entry of mechanical Energy influences, for example in the form of textile movement. Therefore, the parameters of the speed of the laundry drum 1 and the duty cycle of the engine, which significantly influence the textile movement to match the shrinkage sensitivity SE of the textiles. In addition to the textile movement, the shrinkage of the textile is also influenced by the temperature of the treatment medium.

Wie in Fig. 2 gezeigt ist die Schrumpfempfindlichkeit SE zu Beginn des Waschprozesses noch relativ gering, da die einzelnen Fasern durch die geringe Einwirkzeit noch nicht stark aufgequollen sind. Somit kann zu Beginn des Waschprozesses auch das sonst sehr schrumpfempfindliche Textil stärker bewegt werden, ohne einen übermäßigen Schrumpf des Textils durch diese Bewegung zu bewirken.As in Fig. 2 shown the shrinkage sensitivity SE is still relatively low at the beginning of the washing process, since the individual fibers are not yet swollen due to the low exposure time. Thus, at the beginning of the washing process, the otherwise very sensitive to shrinkage textile can be moved more, without causing excessive shrinkage of the textile by this movement.

Die Waschmaschine verfügt daher über eine Programmsteuereinrichtung mit Mitteln zur Ansteuerung des Motors und zum Steuern des Ablaufes der Trommeldrehzahl gemäß der Figuren 4 oder 5.The washing machine therefore has a program control device with means for controlling the motor and for controlling the course of the drum speed according to the FIGS. 4 or 5 ,

Sofern die Wäschetrommel 1 gemäß Figur 4 in nur einer Drehrichtung betrieben wird, wird der Motor während der Phase A aufeinanderfolgend für die Dauer T_e von 12 sec eingeschaltet und für T_a von 48 sec ausgeschaltet, wobei der Motor derartig angesteuert wird, dass während der Einschaltphasen die Wäschetrommel 1 mit einer Drehzahl von 22 1/min dreht. Das Einschaltdauerverhältnis ED während der Phase A ergibt sich somit gemäß der Formel ED = T_e / (T_e + T_a) zu 20 %.If the laundry drum 1 according to FIG. 4 is operated in one direction of rotation, the motor is turned on during the phase A successively for the duration T_e of 12 sec and off for 48 sec T_a, the motor is controlled such that during the switch-on the laundry drum 1 at a speed of 22 1 / min turns. The duty ratio ED during the phase A thus results according to the formula ED = T_e / (T_e + T_a) to 20%.

Entsprechend der Zunahme der in Fig. 2 dargestellten Schrumpfempfindlichkeit ED wird bei dem Verfahren gemäß Fig. 4 während der Phase B die Einschaltdauer des Motors T_e auf 7,2 sec (bzw. auf 1,8 sec während der Phase C) verkürzt und die Ausschaltdauer T_a entsprechend auf 52,8 sec (bzw. auf 58,2 sec während der Phase C) verlängert. Somit ergibt sich für die Phase B ein Einschaltdauerverhältnis ED von 12% und entsprechend für die Phase C ein Einschaltdauerverhältnis von 3%. Das derartig gestaltete Verfahren bewirkt, dass der Eintrag an mechanischer Energie in das Textil mit zunehmender Schrumpfempfindlichkeit SE abnimmt und dass zugleich die für die Reinigung des Textils erforderliche gesamte mechanische Energie erhalten bleibt. Beispielsweise werden bei im Stand der Technik bekannten Waschverfahren für schrumpfgefährdete Textilien die Wäschetrommel während des Waschprozesses mit einem konstanten Einschaltdauerverhältnis ED von 12 % bewegt. Die dabei resultierende gesamte auf das Textil wirkende mechanische Energie ist in etwa so groß wie bei dem erfindungsgemäßen Ausführungsbeispiel.
Die Veränderung des Einschaltdauerverhältnisses ED während des Waschprozesses bei der bevorzugten Ausführung gemäß Fig. 4 ist im Diagramm gemäß Fig. 3 (durchgezogenen Funktionslinie) dargestellt. In alternativen Ausführungen kann das Verhältnis der Einschaltdauer ED während der Dauer t des Waschprozesses auch gemäß der gestrichelten Linie in Fig. 3 kontinuierlich reduziert werden.According to the increase in Fig. 2 shown shrinkage sensitivity ED is in the method according to Fig. 4 During phase B, the switch-on duration of the motor T_e is shortened to 7.2 sec (or to 1.8 sec during phase C) and the switch-off duration T_a correspondingly to 52.8 sec (or to 58.2 sec during phase C) ) extended. Thus, for the phase B, a duty ratio ED of 12% and, accordingly, for the phase C, a duty ratio of 3%. The process designed in this way causes the entry of mechanical energy in the textile decreases with increasing shrinkage sensitivity SE and at the same time preserves the total mechanical energy required for the cleaning of the textile. For example, in the washing process for shrinkage-endangered textiles known in the prior art, the laundry drum is provided with a constant duty ratio during the washing process ED moved by 12%. The resulting total acting on the textile mechanical energy is about as large as in the embodiment of the invention.
The change in the duty ratio ED during the washing process in the preferred embodiment according to FIG Fig. 4 is in the diagram according to Fig. 3 (solid line) shown. In alternative embodiments, the ratio of the duty cycle ED during the duration t of the washing process also according to the dashed line in Fig. 3 be continuously reduced.

Darüber hinaus verfügt die Wäschetrommel 1 über in Fig. 1 dargestellte Wäschemitnehmer 3, die mit Schöpfeinrichtungen 4 ausgestattet sind und die auf ihren Firstabschnitten Löcher 5 aufweisen, durch die aus dem unteren Abschnitt des Laugenbehälters 2 geschöpftes Wasser über den Wäscheposten 6 geregnet wird, wenn die Mitnehmer 3, wie der Mitnehmer 3.1 in der Darstellung, durch Drehen der Wäschetrommel 1 in Richtung des Pfeils 7 in eine oberhalb des Wäscheposten 6 liegende Position gerät.In addition, the laundry drum 1 has in Fig. 1 illustrated Wäschemitnehmer 3, which are equipped with scooping devices 4 and have on their ridge sections holes 5, is rained by the water from the lower portion of the tub 2 scooped water over the laundry items 6 when the driver 3, as the driver 3.1 in the illustration, by turning the laundry drum 1 in the direction of the arrow 7 in a lying above the laundry item 6 device.

Im bevorzugten Ausführungsbeispiel dreht die Wäschetrommel 1 ausschließlich in Richtung des Pfeils 7, somit wird die Wirksamkeit der Schöpfeinrichtung optimal genutzt und der Wäscheposten 6 allseitig mit Wasser oder Lauge beaufschlagt. Hierdurch wird die eine schnelle Benetzung und Durchflutung der Textilien des Wäscheposten 6 vorteilhaft unterstützt.In the preferred embodiment, the laundry drum 1 rotates exclusively in the direction of arrow 7, thus the effectiveness of the scooping device is used optimally and the laundry items 6 on all sides acted upon with water or brine. As a result, the rapid wetting and flooding of the textiles of the laundry items 6 is advantageously supported.

Gemäß dem zweiten Ausführungsbeispiel, dargestellt in Fig. 5, dreht die Wäschetrommel 1 mit wechselnden Drehrichtungen mit einer Drehzahl von +33 bzw. -33 1/min. Dabei ist in der Phase A die Einschaltdauer T_e1 des Motors mit 15 sec für die Drehung der Wäschetrommel 1 in Richtung des in Fig. 1 dargestellten Pfeils 7 bzw. in Richtung der Wirksamkeit der Schöpfeinrichtung 4 länger als die Einschaltdauer T_e2 mit 9 sec für die Drehung der Wäschetrommel 1 in entgegengesetzter Richtung. Während der Phase A betragen die Ausschaltdauern T_a1 45 sec und T_a2 51 sec. Das Einschaltdauerverhältnis ED_<> des Motors einer Drehrichtung berechnet sich nach der Formel ED_<> = T_e<> / (T_e<> + T_a<>). Somit ist das Einschaltverhältnis ED_1 des Motors für die Drehung der Wäschetrommel 1 in Richtung der Wirksamkeit der Schöpfeinrichtung 4 mit 25% größer als das Einschaltdauerverhältnis ED_2 der Gegendrehrichtung mit 15%. Durch eine solche Wahl der Einschaltdauerverhältnisse ED_1 und ED_2 kann trotz eines Betriebes der Wäschetrommel mit wechselnden Drehrichtungen die Wirksamkeit der Schöpfeinrichtung 4 wirkungsvoll genutzt werden. Die Ein- und Ausschaltdauern T_e1, T_a1, T_e2 und T_a2 sind im zweiten Ausführungsbeispiel derartig gewählt, dass das mittlere Einschaltdauerverhältnis bezogen auf die gesamte Phase A wie im ersten Ausführungsbeispiel 20% beträgt.According to the second embodiment, shown in FIG Fig. 5 , the washing drum 1 rotates with alternating directions of rotation at a speed of +33 or -33 1 / min. In this case, in the phase A, the duty cycle T_e1 of the motor with 15 sec for the rotation of the laundry drum 1 in the direction of in Fig. 1 in the direction of the efficiency of the scooping device 4 longer than the duty cycle T_e2 with 9 sec for the rotation of the laundry drum 1 in the opposite direction. During phase A, the switch-off durations T_a1 are 45 sec and T_a2 51 sec. The switch-on duration ratio ED _ <> of the motor of one direction of rotation is calculated according to the formula: ED _ <> = T_e <> / (T_e <> + T_a <>). Thus, the duty ratio ED_1 of the motor for the rotation of the laundry drum 1 in the direction of the efficiency of the scooping device 4 is 25% greater than the duty cycle ED_2 of the counterclockwise direction of 15%. By such a choice of the duty cycles ED_1 and ED_2, despite an operation of the Laundry drum with changing directions of the effectiveness of the scooping device 4 can be effectively used. The switch-on and switch-off durations T_e1, T_a1, T_e2 and T_a2 are selected in the second exemplary embodiment such that the average switch-on duration ratio based on the entire phase A is 20%, as in the first exemplary embodiment.

Die Ein- und Ausschaltdauern T_e1, T_a1, T_e2 und T_a2 des Motors bei dem Verfahren gemäß Fig. 5 sind zusammenfassend in der nachstehenden Tabelle 1 aufgeführt: Tabelle 1 Phase A Phase B Phase C T_e1 15 sec 9 sec 2,25 T_a1 45 sec 51 sec 57,75 T_e2 9 sec 5,4 sec 1,35 T_a2 51 sec 54,6 sec 58,65 ED_1 25% 15% 3,75 % ED_2 15% 9% 2,25 % mittlere ED 20 % 12 % 3% The on and off periods T_e1, T_a1, T_e2 and T_a2 of the engine in the method according to Fig. 5 are summarized in Table 1 below: <b> Table 1 </ b> Phase A Phase B Phase C T_e1 15 sec 9 sec 2.25 t_A1 45 sec 51 sec 57.75 T_e2 9 sec 5.4 sec 1.35 T_a2 51 sec 54.6 sec 58,65 ED_1 25% 15% 3.75% ED_2 15% 9% 2.25% middle ED 20% 12% 3%

Die Ein- und Ausschaltdauern T_e und T_a des Motors und die Drehzahlen der Wäschetrommel 1 sind nicht bei dem erfinderischen Verfahren auf die für die beiden Ausführungsbeispiele angegebenen Zahlenwerte beschränkt, sondern sie können unter Berücksichtigung der Bedürfnisse der zu behandelnden Textilien und der geometrischen Abmessungen der Wäschetrommel 1 und der Mitnehmer 3 im Rahmen der beanspruchten Bereiche variiert werden.The turn-on and turn-off times T_e and T_a of the engine and the rotational speeds of the laundry drum 1 are not limited to the numerical values given for the two exemplary embodiments in the inventive method, but they can take into account the needs of the textiles to be treated and the geometric dimensions of the laundry drum. 1 and the driver 3 are varied within the claimed ranges.

Claims (20)

  1. Method of washing a laundry batch (6) of shrink-prone textiles in a program-controlled washing machine with a motor driving a rotatably mounted laundry drum (1), comprising a washing process in which the laundry batch (6) is, for wetting and saturation by water or solution, moved in that the motor is driven with predetermined switch-on periods (T_e, T_e1, T_e2) and switch-off periods (T_a, T_a1, T_a2), characterised in that during the progress of the washing process the switch-on period ratio (ED, ED_1, ED_2) of the motor, which is determined by the quotient of the switch-on period (T_e, T_e1, T_e2) and the sum of the switch-on period (T_e, T_e1, T_e2) and the switch-off period (T_a, T_a1, T_a2), is reduced section-by-section or continuously in correspondence with the increase in shrinkage sensitivity (SE).
  2. Method according to claim 1, characterised in that during the rotation of the laundry drum (1), on the inner side of the casing of which a scoop device (4) for scooping water from the lower region of the solution container (2) is arranged, the scooped water is rained over the laundry batch (6) when the scoop device (4) is disposed above the laundry batch (6).
  3. Method according to claim 1 or 2, in which the laundry drum (1) during the washing process is rotated exclusively in one direction (7).
  4. Method according to claim 2, characterised in that the laundry drum (1) is rotated in the direction (7) of effectiveness of the scoop device (4).
  5. Method according to claim 1 or 2, in which the laundry drum (1) during the washing process is rotated in alternate directions.
  6. Method according to claim 2, characterised in that the laundry drum (1) is rotated in the direction (7) of effectiveness of the scoop device (4) with a switch-on period ratio (ED_1) of this direction which is greater than the switch-on period ratio (ED_2) of the opposite direction.
  7. Method according to any one of the preceding claims, characterised in that the motor is operated during a phase (A) at the beginning of the washing process with a switch-on period ratio (ED, ED_1, ED_2) greater than 12%.
  8. Method according to claim 7, characterised in that the motor is operated during a phase (C) at the end of the washing process with a switch-on period ratio (ED, ED_1, ED_2) less than 5%.
  9. Method according to any one of the preceding claims, in which the drum rotation is rotated at a rotational speed of 15 to 35 1/min in adaptation to the constructional features of the solution container (2).
  10. Method according to any one of the preceding claims, in which the drive phases of the motor follow at an interval of 10 to 60 seconds.
  11. Program-controlled washing machine for carrying out the method according to any one of claims 1 to 10, with a rotatably mounted laundry drum (1) driven by a motor and with a program control, which comprises means for drive control of the motor and for control of the sequence of the rotational speed of the laundry drum (1) with respect to the level of the rotational speed, the rotational direction (7), the switch-on period (T_e, T_e1, T_e2) and the switch-off period (T_a, T_a1, T_a2) of the motor, characterised in that the means are constructed for section-by-section or continuous reduction of the switch-on period ratio in correspondence with the increase in shrinkage sensitivity (SE) during the washing process by control of the switch-on period (T_e, T_e1, T_e2) and switch-off period (T_a, T_a1, T_a2).
  12. Washing machine according to claim 11 with a solution container (2), characterised in that the laundry drum includes on the inner side of the casing thereof an entrainer (3, 3.1) which is equipped with a scoop device (4) for scooping the water from the lower region of the solution container (2) and for sprinkling the scooped water, wherein sprinkling takes place when the scoop device (4) is disposed above the laundry batch (6).
  13. Washing machine according to claim 11 or 12, characterised in that the rotation of the laundry drum during the washing process takes place exclusively in one rotational direction (7).
  14. Washing machine according to claim 12, characterised in that the rotational direction (7) of the laundry drum (1) corresponds with the direction of effectiveness of the scoop device.
  15. Washing machine according to claim 11 or 12, characterised in that the rotation of the laundry drum (1) during the washing process takes place with alternating rotational directions.
  16. Washing machine according to claim 12, characterised in that the rotation of the laundry drum (1) in the direction of the effectiveness of the scoop device (7) takes place with a switch-on period ratio (ED_1) of this direction which is greater than the switch-on period ratio (ED_2) of the opposite direction.
  17. Washing machine according to any one of claims 11 to 16, characterised in that the means are constructed for drive control of the motor during a phase (A) at the beginning of the washing process with a switch-on period ratio (ED, ED_1, ED_2) greater than 12%.
  18. Washing machine according to claim 17, characterised in that the means are constructed for drive control of the motor during a phase (C) at the end of the washing process with a switch-on period ratio (ED, ED_1, ED_2) less than 5%.
  19. Washing machine according to any one of claims 11 to 18, characterised in that the drum rotation can be performed at a rotational speed of 15 to 35 1/min in adaptation to the constructional features of the solution container (2) and/or the laundry drum (1).
  20. Washing machine according to any one of claims 11 to 19, characterised in that the drive phases of the motor have an interval of 10 to 60 seconds.
EP06701673A 2005-04-11 2006-01-09 Method for washing shrinkable textiles and a washing machine for carrying out said method Active EP1871941B1 (en)

Priority Applications (1)

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SI200630105T SI1871941T1 (en) 2005-04-11 2006-01-09 Method for washing shrinkable textiles and a washing machine for carrying out said method

Applications Claiming Priority (2)

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DE102005016566A DE102005016566A1 (en) 2005-04-11 2005-04-11 Process for washing textiles susceptible to shrinkage and washing machine for carrying it out
PCT/EP2006/050083 WO2006108722A1 (en) 2005-04-11 2006-01-09 Method for washing shrinkable textiles and a washing machine for carrying out said method

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EP1871941A1 EP1871941A1 (en) 2008-01-02
EP1871941B1 true EP1871941B1 (en) 2008-07-30

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EP06701673A Active EP1871941B1 (en) 2005-04-11 2006-01-09 Method for washing shrinkable textiles and a washing machine for carrying out said method

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US (1) US20090013480A1 (en)
EP (1) EP1871941B1 (en)
KR (1) KR101083953B1 (en)
CN (1) CN101155956B (en)
AT (1) ATE403023T1 (en)
DE (2) DE102005016566A1 (en)
EA (1) EA011757B1 (en)
ES (1) ES2309938T3 (en)
SI (1) SI1871941T1 (en)
WO (1) WO2006108722A1 (en)

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ATE547552T1 (en) * 2008-07-10 2012-03-15 Electrolux Home Prod Corp WASH CYCLE PROFILE IN LAUNDRY DISTRIBUTION AND LAUNDRY RELEASE
EP3205958B1 (en) * 2010-02-01 2019-11-13 LG Electronics Inc. Refrigerator
US10422068B2 (en) 2016-02-12 2019-09-24 Whirlpool Corporation Laundry treating appliance and methods of operation

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Publication number Priority date Publication date Assignee Title
GB1174815A (en) * 1966-02-17 1969-12-17 Candy Spa An improved Washing method
DE3703860A1 (en) * 1987-02-07 1988-08-18 Bauknecht Hausgeraete METHOD FOR LAUNDRY WASHING IN A DRUM WASHING MACHINE
DE3741177A1 (en) * 1987-12-04 1989-06-15 Bosch Siemens Hausgeraete METHOD FOR OPERATING A DRUM WASHING MACHINE AND DRUM WASHING MACHINE FOR CARRYING OUT THE METHOD
JP3124358B2 (en) * 1992-01-13 2001-01-15 株式会社日立製作所 Control device for rotating equipment and washing machine using it
DE4310595A1 (en) * 1993-03-31 1994-10-06 Bosch Siemens Hausgeraete Washing machine with a reversing laundry drum
DE19600354A1 (en) * 1995-01-11 1996-07-18 Miele & Cie Washing machine has perforated drum
GB0006507D0 (en) 2000-03-18 2000-05-10 Notetry Ltd Laundry appliance
DE10130779A1 (en) * 2001-06-26 2003-01-02 Aeg Hausgeraete Gmbh Careful washing procedure for washing machine involves using drum revolution rate of between 32 rpm and 53 rpm during washing process, interrupting for 10 to 15 seconds at intervals
US7127767B2 (en) * 2002-05-09 2006-10-31 Whirlpool Corporation Time-varying agitator oscillations in an automatic washer
DE10234473A1 (en) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH A method for acceleration of the absorption of water in the dry wash load of an automatic washing machine, using a controlled sequence of alternate direction tumbles at different speeds
JP2005124764A (en) * 2003-10-23 2005-05-19 Matsushita Electric Ind Co Ltd Drum type washing machine
KR20060023067A (en) * 2004-09-08 2006-03-13 삼성전자주식회사 Washing machine

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DE502006001247D1 (en) 2008-09-11
KR101083953B1 (en) 2011-11-16
CN101155956B (en) 2010-08-04
DE102005016566A1 (en) 2006-10-12
SI1871941T1 (en) 2008-12-31
EA200701832A1 (en) 2008-04-28
ES2309938T3 (en) 2008-12-16
EA011757B1 (en) 2009-06-30
CN101155956A (en) 2008-04-02
KR20080000581A (en) 2008-01-02
US20090013480A1 (en) 2009-01-15
WO2006108722A1 (en) 2006-10-19
EP1871941A1 (en) 2008-01-02
ATE403023T1 (en) 2008-08-15

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