EP2348151B1 - Procédé de fonctionnement d'un lave-linge avec un dispositif d'écoulement - Google Patents

Procédé de fonctionnement d'un lave-linge avec un dispositif d'écoulement Download PDF

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Publication number
EP2348151B1
EP2348151B1 EP10401014.5A EP10401014A EP2348151B1 EP 2348151 B1 EP2348151 B1 EP 2348151B1 EP 10401014 A EP10401014 A EP 10401014A EP 2348151 B1 EP2348151 B1 EP 2348151B1
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Prior art keywords
speed
drum
laundry
washing
washing liquid
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EP10401014.5A
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German (de)
English (en)
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EP2348151A1 (fr
Inventor
Dirk Sieding
Helge Müller
Rainer Bicker
Patrick Dummeier
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Miele und Cie KG
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Miele und Cie KG
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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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements

Definitions

  • the invention relates to a method for operating a washing machine with a tub for holding washing liquid for treating laundry, a radiator and a Umflut issued, the method comprises a washing phase with activated radiator for heating the washing liquid and activated Umflut Nurs, the washing liquid from the lower Area of the tub in the upper area, based on the operational installation position of the washing machine promotes (see EP-A-0 726 349 ).
  • the laundry is moved in the rotating drum, whereby the wetting of the laundry with the washing liquid and the washing mechanism are effected. In this case, there is water in the tub or in the drum, wherein the dirt is flushed out by the movement of the laundry.
  • the actual circulating device is activated, that is, the laundry is acted upon by the washing liquid.
  • the actual circulating device is activated, that is, the laundry is acted upon by the washing liquid.
  • an increased time is required compared to a normal washing phase, since the detergent dissolution is performed separately before the wetting section.
  • more washing liquid must be provided because the space below the tub takes up a significant portion of the free liquor.
  • a method of operating a washing machine in which a flooding device is temporarily activated while the drum is being rotated at application speed. At other times, the drum is rotated at a reduced speed so that the laundry is moved within the drum, during which time the flooding device is not activated. With an increased speed is deliberately rotated only at the beginning of the washing phase to prevent the laundry from adhering to the drum thereafter. It is therefore no longer rotated at increased speed, which is at the expense of water efficiency.
  • the invention is therefore based on the object to provide a method with improved washing action and to reduce the energy consumption and / or the total duration of the washing process.
  • the essential advantage of the method according to the invention is that in a simple manner an improvement in the washing effect and a reduction in the washing time and the energy consumption compared to a conventional washing phase with circulating are achieved. Elaborate design measures are not necessary here. Although sensors, such as pressure sensors and temperature sensor are needed, but they are inexpensive to install accordingly or they are already present in a conventional washing machine.
  • the control of the washing process is achieved by the adaptation of the computer program for the control device.
  • the steps c) and d) are repeated several times and only then deactivated the Umflut nails. As a result, thorough mixing of the laundry with the small amount of washing liquid is achieved.
  • steps c) and d) are repeated 2 to 10 times.
  • step d) requires approximately 1.5 to 4 times the time that is provided for step c).
  • the circulating device is operated at a lower delivery rate in step d) than in step c.
  • the lowering of the level can be slowed down somewhat, as a result of which step d) can last in each case.
  • the upper limit of the temperature for the washing liquid is set higher than the user-selected set temperature for the laundry treatment.
  • the upper limit in the range of 5 ° C to 10 ° C is higher than the setpoint for the lye temperature. Short-term overheating in this temperature range Do not lead to damage to the laundry, increased wear on the laundry or visible discoloration.
  • the first speed is in the range of 30 1 / min to 70 1 / min.
  • a good wash fall is achieved with usual household drum sizes.
  • a range of 300 1 / min to 700 1 / min is provided, so that in the usual drum size, a concern of the laundry items on the drum shell and expelling the liquor is achieved from the laundry, without too much mechanical stress on the laundry .
  • the speeds deviate from the critical speed range, where the imbalance leads the most to vibrations, so that a safe and quiet run is provided.
  • steps c) and j) at least in steps c) and j), a monitoring of foam formation is activated, wherein steps c) or j) are respectively ended only after the recognition of foam.
  • the drum can be rotated longer with the so-called high speed, resulting in a shortened or improved moisture penetration or washing effect.
  • a washing machine is further proposed with a tub for holding washing liquid for treating laundry, a horizontally rotatably mounted drum in the tub, a motor for rotating the drum, a radiator, a Umflutdazzling, a water inlet device, a sensor for detection the liquid level in the tub, a temperature sensor for detecting the temperature of the washing liquid and a control means for controlling the individual phases of the selected washing program, wherein the control means is in operative connection with the sensors and configured for the Umflut Vietnamese, the radiator, the water inlet device and the motor for turning the drum according to the method of any of the above embodiments or developments to activate or deactivate or turn on or off.
  • the sensors are in communication with the controller.
  • a pressure sensor can be used which is connected to an air trap on the tub in the lower region by means of a hose line.
  • conductance sensors may also be attached to the tub wall, which then provide a signal to the controller when covered by wash liquid.
  • Other sensors are also possible, with the controller then having to be configured accordingly.
  • the temperature sensor and the sensor for detecting the liquid level are arranged in the sump of the suds container. As a result, the temperature of the fairly small amount of Waschtlerkiet can be detected reliably and accurately.
  • the washing machine comprises a further sensor for detecting the liquid level or pressure in a Umfluttechnisch the Umflut Surprise. This ensures that the flooding is always reliable and the circulating pump can be switched off as soon as there is no more caustic in the circulating line.
  • Fig. 1 is a purely schematic representation of a washing machine 1, shown with a tub 2.
  • the position and direction information refer to the operational installation position of the washing machine 1.
  • a rotatably mounted and driven by an electric motor 13 drum 3 is arranged, which moves the laundry items located in the tub 2 8.
  • 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 a door 5.
  • a radiator 7 is arranged, which can heat the washing liquid in the tub.
  • an inlet valve 15 is sketched, which provides the running in 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 leads the spent washing liquid or the rinse water from the tub 2 to the drain line 12c, which usually opens into a sewer.
  • the control device 18 controls the inlet valve 15, the activity of the drain device 12 or the drain pump 12a, the drive motor 13, which is energized via the power unit or a frequency converter 16, and the radiator 7.
  • the pump 17a In the lower part of the tub 2, based on the Bertriebspare Installation position of the washing machine, the pump 17a is mounted a Umflut worn.
  • the pump 17a is connected to the drain pipe 12b on the inlet side and suction side, respectively, and can convey the washing liquid 19 therein through the pipe 17b into the upper portion of the tub 2 and the drum 3, respectively.
  • the washing liquid 19 is injected or flows onto the laundry items 8 through the nozzle or the outlet 17c.
  • Fig. 1 is also shown that the washing machine below the tub 2 has an additional sump 24, in which wash liquor 19 can collect.
  • the radiator 7 and a temperature sensor 22 are arranged or integrated.
  • a pressure sensor 21 Below the sump 24 is a pressure sensor 21.
  • a complete sequence of a washing program WP is shown in a diagram.
  • the individual phases or temporal sections within the wash program WP are shown on the time axis t.
  • the program sequence WP shown here comprises a washing phase Wa, a rinsing phase Sp and a spinning phase Sc.
  • the radiator 7 and the circulating device 17 are controlled accordingly to heat the washing liquid 19 to the predetermined temperature.
  • the Shufeuchtungsabschhnitt DF is performed, in which the laundry 8 is wetted with liquid 19 and moistened.
  • this section DF water is introduced into the purging device 11, whereby the processing agent stored therein, such as washing powder, is introduced into the tub 2 through the connection pipe 14.
  • the heating-up section Hz in which the washing liquid is heated by means of the heating element 7 switched on to the temperature preset by the control device 18 by the selected program.
  • the washing liquid 19 cools.
  • the washing phase Wa is ended with the pumping, wherein the drain device 12, in particular the pump 12a or a drain valve is activated.
  • pumping can also be spun so that the scrubbing added with detergent washing liquid 19 is removed from the fabric of the laundry items 8.
  • the flushing section Sp in which fresh water is introduced into the tub and the items of laundry 8 are moved therein.
  • the rinse water is pumped out, followed by the final spin Sc for dewatering the laundry items 8.
  • the drum 3 is rotated at a higher speed compared to the washing process, in which the laundry items 8 abut the drum shell and the water or the washing liquid is thrown out of the fabric due to the centrifugal force out through the drum openings.
  • the drain device 12 is activated in this case, so that the liquid is removed from the tub 2.
  • a major problem in the process of wet cleaning is the uniform moisture penetration of the laundry 8. It must be several times ejected wash liquor 19, and returned to the laundry 8, to achieve a uniform moisture. Since wash liquor 19 collects in the tub 2 during spinning, massive foam problems may also occur. To counteract these problems, special measures must be taken for the moisture Df and the heating Hz of the laundry. The individual phases of the washing process are adapted in a special way.
  • Fig. 3 is the fürfeuchtungsabrough DF schematically shown in a diagram.
  • the detergent is flushed into the tub 2.
  • the inflowing amount of water is kept so low that a complete saturation of the laundry 8 with wash liquor 19 is not possible.
  • first wet 1-2 is first performed.
  • the laundry 8 is thereby at the rotational speed n 1 in a conventional rotational rhythm with a speed less than the application speed moves until the liquid level reaches or exceeds an upper value Niv3.
  • the water inlet 15 is stopped and the liquor 19 flooded.
  • appropriate speed 30 to 60 1 / min is set in a household washing machine. This is done until time 2-1a, when the liquid level in the tub 2 has fallen below the predetermined level Niv 2 .
  • the moistening phase consists of purge spinner cycles and wet overflow cycles which are called several times in succession.
  • the drum is brought to speeds n 2 above the application speed of the laundry 8. So lye 19 is expelled from the laundry 8.
  • the circulating pump 17a is running and the ejected liquor 19 is again injected into the laundry 8.
  • the circulating centrifugal process is always carried out only for a short time, for example 1 to 3 minutes, so that no foam can form.
  • Fig. 4 the heating section HZ is shown schematically in a diagram.
  • the time points on the time axis t are given here only symbolically, in the real process, these markings correspond to a time unit.
  • the heating phase is realized with a conventional radiator in a sump 24.
  • the laundry 8 is first brought to the time point 3-1 a back to a speed n2 above the application speed. As a result, lye 19 is expelled from the laundry 8, which collects in the sump 24. If the sump 24 is filled to the predetermined level Niv 2 , the speed is reduced again to the normal washing speed n1. From the time 3-1 b of the radiator 7 is turned on, so that the expelled liquor 19 is now heated by the radiator 7 located in the extended sump 14.
  • the circulating device 17 is activated or the circulating pump 17 a is switched on and the heater 7 is switched off.
  • the heated liquor 19 is returned to the laundry 8 in the period 3-1 c to 3-2a.
  • the drum 3 is rotated at normal washing speed n1.
  • the level of the washing liquid decreases until the lower level Niv2 is reached.
  • the flooding spin is again activated, with the drum 3 being rotated at high speed n2 until time 3-2c.
  • the three steps listed are repeated until the average liquor temperature corresponds to the desired setpoint temperature T soll .
  • the setpoint temperature Tsoll is below the temperature Tmax at which the shutdown of the radiator 7 takes place.
  • the foaming can be minimized, but still a uniform heating of the laundry 8 can be achieved.
  • a normal washing cycle is carried out to allow the temperature activated components of the detergent to act.
  • the drum 3 is hereby rotated at normal speed n1, in which the so-called laundry event takes place.
  • the overall sequence of the washing program WP can be shortened, the amount of detergent can be reduced and / or the washing effect can be improved.
  • the Umwutschleudern performed in the phases fürfeuchtung Df and heating Hz ensures a strong foaming, especially if the liquid level in the tub 2 is so high that the rotating drum 3 comes into contact with wash liquor. It then comes to an increased power consumption and finally to a drop in speed at the drive motor 13. Therefore, the formation of foam must be detected in good time. This is possible either by reading the engine speed or the motor current.
  • the engine speed can be read out via the tachogenerator already used in the engines today.
  • the evaluation of the motor current can be done on drives with frequency inverters 16 or brushless motors via the control electronics.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (12)

  1. Procédé de fonctionnement d'une machine à laver (1) avec une cuve de lessivage (2) destinée à recevoir du liquide de lavage (19) pour traiter du linge (8), avec un corps chauffant (7) et un dispositif de circulation (17), dans lequel le procédé comprend une phase de lavage (Wa) avec le corps chauffant (7) mis en circuit pour le chauffage du liquide de lavage (19) et avec le dispositif de circulation (17) activé qui transporte le liquide de lavage (19) à partir de la zone inférieure de la cuve de lessivage (2) vers la zone supérieure, en se rapportant à la position d'installation opérationnelle de la machine à laver (1),
    caractérisé par
    une période d'humidification (DF) au début de la phase de lavage (Wa), avec les étapes suivantes :
    a) admission d'une quantité d'eau avec addition de détergent dans la cuve de lessivage (2), dans lequel la quantité d'eau est dimensionnée de telle sorte qu'une saturation complète de l'article à laver (8) n'est pas atteinte, et rotation du tambour (3) dans le rythme d'inversion à une première vitesse de rotation (n1) inférieure à la vitesse de rotation provoquant l'application du linge contre le tambour,
    b) activation du dispositif de circulation (17) jusqu'à ce que le niveau du liquide de lavage (19) atteigne une valeur limite inférieure (Niv2),
    c) rotation du tambour (3) à une deuxième vitesse de rotation (n2) qui est plus élevée que la première vitesse de rotation (n1) et qui est supérieure à la vitesse de rotation provoquant l'application du linge contre le tambour, ce qui provoque un effet d'essorage avec expulsion du liquide de lavage à partir de l'article à laver (8) et une augmentation du niveau du liquide de lavage jusqu'à une valeur supérieure (Niv3),
    d) rotation du tambour (3) à la première vitesse de rotation (n1) jusqu'à ce que le niveau atteigne la valeur limite inférieure (Niv2),
    dans lequel le dispositif de circulation (17, 17a) est activé de façon ininterrompue pendant les étapes c) et d).
  2. Procédé selon la revendication 1, caractérisé en ce que les étapes c) et d) sont répétées plusieurs fois, après quoi le dispositif de circulation (17, 17a) est désactivé.
  3. Procédé selon la revendication 2, caractérisé en ce que les étapes c) et d) sont répétées de 2 à 10 fois.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que, pendant l'étape d), le dispositif de circulation (17, 17a) est mis en marche avec un débit plus faible que pendant l'étape c).
  5. Procédé de fonctionnement d'une machine à laver (1) selon l'une des revendications 1 à 4, caractérisé en ce que la période d'humidification (DF) est suivie d'une période de chauffage (HZ) destinée au chauffage du liquide de lavage (19) à une température prédéfinie, comprenant les étapes suivantes
    e) rotation du tambour (3) à une deuxième vitesse de rotation (n2) qui est plus élevée que la première vitesse de rotation (n1) et qui est supérieure à la vitesse de rotation provoquant l'application du linge contre le tambour, ce qui provoque un effet d'essorage avec expulsion du liquide de lavage à partir de l'article à laver (8) et une augmentation du niveau du liquide de lavage jusqu'à une valeur limite supérieure (Niv3),
    f) rotation du tambour (3) à la première vitesse de rotation (n1) au-dessous de la vitesse de rotation provoquant l'application du linge contre le tambour,
    g) activation du corps chauffant (7) pour le chauffage du liquide de lavage (19) jusqu'à ce que la température du liquide de lavage atteigne ou dépasse une valeur limite supérieure (Tmax),
    h) arrêt du corps chauffant (7) et activation du dispositif de circulation (17, 17a) jusqu'à ce qu'une valeur limite inférieure (Niv2) soit atteinte,
    dans lequel les étapes e à h sont répétées plusieurs fois.
  6. Procédé selon la revendication 5, caractérisé en ce que la valeur limite supérieure de la température du liquide de lavage (Tmax) est plus élevée que la température de consigne (Tsoll) de traitement du linge sélectionnée par l'utilisateur.
  7. Procédé selon la revendication 6, caractérisé en ce que la valeur limite supérieure (Tmax) est plus élevée que la température de consigne (Tsoll) dans la plage de 5 °C à 10 °C.
  8. Procédé selon la revendication 5, caractérisé en ce que, après la période de chauffage (HZ), la phase de post-lavage (NA) est effectuée avec le dispositif de circulation (17, 17a) activé, comprenant les étapes suivantes :
    i) rotation du tambour (3) à la première vitesse de rotation (n1) au-dessous de la vitesse de rotation provoquant l'application du linge contre le tambour jusqu'à ce que le niveau atteigne la valeur limite inférieure (Niv2),
    j) rotation du tambour (3) à une deuxième vitesse de rotation (n2) qui est plus élevée que la première vitesse de rotation (n1) et qui est supérieure à la vitesse de rotation provoquant l'application du linge contre le tambour, ce qui provoque un effet d'essorage avec expulsion du liquide de lavage à partir de l'article à laver (8) et une augmentation du niveau du liquide de lavage jusqu'à une valeur supérieure (Niv3),
    dans lequel les étapes i) et j) sont répétées plusieurs fois.
  9. Procédé selon la revendication 5, caractérisé en ce que, après la période de chauffage (Hz), la phase de post-lavage (Na) est effectuée avec le corps chauffant (7) arrêté et avec une rotation du tambour (3) à la première vitesse de rotation (n1) pour entraîner une chute du linge pendant un certain temps, comprenant les étapes suivantes
    k) admission d'une quantité d'eau supplémentaire jusqu'à ce qu'un niveau (Niv3) plus élevé soit atteint,
    l) activation du dispositif de circulation (17, 17a).
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que, après la phase de post-lavage (Na), il est effectué au moins une phase de rinçage (Sp) dans laquelle le liquide de lavage (19) est enlevé de la cuve de lessivage (2) et de l'eau fraîche est admise dans la cuve de lessivage (2) pour le rinçage de l'article à laver (8).
  11. Procédé selon l'une des revendications 1 à 5, 7 ou 8, caractérisé en ce que la première vitesse de rotation (n1) se situe dans la plage de 30 tr/min à 70 tr/min, et la deuxième vitesse de rotation (n2) se situe dans la plage de 300 tr/min à 600 tr/min.
  12. Procédé selon la revendication 1 ou 5, caractérisé en ce que, au moins pendant les étapes c) et j), une surveillance de la formation de mousse est activée, dans lequel les étapes c) ou j) ne sont terminées respectivement qu'après la détection de mousse.
EP10401014.5A 2010-01-25 2010-01-25 Procédé de fonctionnement d'un lave-linge avec un dispositif d'écoulement Active EP2348151B1 (fr)

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CN109072528A (zh) * 2016-04-12 2018-12-21 Bsh家用电器有限公司 具有控制装置的洗涤物护理器具
CN109072528B (zh) * 2016-04-12 2021-05-25 Bsh家用电器有限公司 具有控制装置的洗涤物护理器具
WO2019132593A1 (fr) * 2017-12-28 2019-07-04 Lg Electronics Inc. Procédé de commande de lave-linge
DE102020108667A1 (de) 2020-03-30 2021-09-30 Miele & Cie. Kg Verfahren und Steuereinheit zur Waschmittelaktivierung für ein Reinigungsgerät mit einer drehbaren rippenlosen Trommel und Reinigungsgerät
WO2021197878A1 (fr) 2020-03-30 2021-10-07 Miele & Cie. Kg Procédé et unité de commande permettant d'activer un détergent pour un appareil de nettoyage avec un tambour rotatif sans nervures, et appareil de nettoyage

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