EP2930261B1 - Procédé de fonctionnement d'un lave-linge et lave-linge - Google Patents

Procédé de fonctionnement d'un lave-linge et lave-linge Download PDF

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Publication number
EP2930261B1
EP2930261B1 EP15161681.0A EP15161681A EP2930261B1 EP 2930261 B1 EP2930261 B1 EP 2930261B1 EP 15161681 A EP15161681 A EP 15161681A EP 2930261 B1 EP2930261 B1 EP 2930261B1
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EP
European Patent Office
Prior art keywords
washing
washing liquid
temperature
laundry
tub
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.)
Active
Application number
EP15161681.0A
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German (de)
English (en)
Other versions
EP2930261A1 (fr
Inventor
Markus Drücker
Andrej Vonberg
Patrick Dummeier
Peter Zinkann
Dirk Sieding
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Miele und Cie KG
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Miele und Cie KG
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Publication of EP2930261A1 publication Critical patent/EP2930261A1/fr
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Classifications

    • 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
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/12—Washing temperature
    • 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
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2105/10—Temperature of washing liquids; Heating means therefor

Definitions

  • the invention relates to a method for operating a washing machine with a tub for holding washing liquid for treating laundry, a rotatably mounted in the tub drum for receiving the laundry, a radiator and a Umflut founded for conveying washing liquid from a lower portion of the tub in a Upper area, based on the operating position of the washing machine.
  • the method includes performing a wash program at a predetermined dial temperature.
  • the washing program comprises a heating step and a subsequent washing step, wherein a washing liquid level is formed in the tub during the heating step so that the heating body is below the washing liquid level and the drum is above the washing liquid level based on the operating position of the washing machine and steam by operating the heating body is produced.
  • the post-washing step is carried out after the heating step. During the post-washing step, the laundry is moved in the drum.
  • warmed up scrubbing liquid is located in the lower portion of the tub, which is unused during the post-washing because it does not come into contact with the laundry in the drum.
  • the heating of washing liquid that is not used for washing is not efficient.
  • the EP 2 348 151 A1 describes a method in which, in a post-heating step following the heating step, flooding only takes place when a desired temperature has been reached.
  • the invention thus faces the problem of providing a method of operating a washing machine and a washing machine which are more efficient.
  • the flooding device is activated during the subsequent washing step, depending on the selection temperature.
  • the circulating device is activated, in particular, when it is efficient, the washing liquid heated in the lower region of the tub to promote in the upper region of the tub and thereby ensure a thorough mixing of the washing liquid with the laundry.
  • the achievable with the present invention consist in addition to improved efficiency is that when activated the Umflut founded a better mixing of washing liquid and laundry achieved and thereby the washing effect can be increased.
  • the post-wash step is performed without activating the flooding device.
  • the activation of the flooding device as a function of the selection temperature during the subsequent washing step therefore enables the process to be carried out in such a way that a good washing effect and energy balance can be achieved.
  • dialing temperature means the temperature that a washing machine user sets by selecting a washing program to be performed. Washing programs are usually associated with a dial and laundry temperature, e.g. Easy to clean 30 ° C or coloreds 60 ° C. By selecting the dialing temperature, the washing machine user sets the laundry temperature at which he wishes to wash the laundry.
  • laundry temperature refers to the temperature at which the laundry is washed in the post-wash step, i. the actual temperature measurable in the washing machine during the final washing. The dial temperature is in this sense the target temperature during the Nachwasch intimids, while the wash temperature represents the actual temperature during the Nachwasch intimids.
  • the post-washing step is carried out according to the specifications of the set washing program, regardless of whether the circulating device is activated or not.
  • the laundry is moved by means of a rotating drum over a specified by the wash program Nachwasch period.
  • the washing liquid covers the radiator disposed in the tub, but is below the drum. That is, before the heating step washing liquid has been introduced into the tub, wherein it has moistened the laundry located in the drum. The laundry has taken up washing liquid, but there is no free liquor in the drum.
  • the washing liquid is heated by means of the radiator to the predetermined by the washing program wash temperature.
  • the radiator is turned on, a temperature stratification sets in, which leads to microsolation occurring on the radiator surface after a period of time. Because of the short distance to the surface, the vapor bubbles manage to persist there, and they exit as vapor.
  • the laundry Since energy can be transferred via the natural propagation behavior of the steam in principle into the wet laundry, the laundry is on the heated by the selection temperature predetermined wash temperature. After reaching the predetermined laundry temperature or a predetermined heating step for the heating step, the heating of the washing liquid is stopped. After the heating step, the post-washing step is carried out.
  • washing liquid is conveyed from the lower region of the tub into the upper region of the tub.
  • the lower portion of the tub is within the meaning of the present invention, the bottom of the washing machine.
  • the sump is the lower part of the washing machine, in which the washing liquid introduced into the tub accumulates by gravity and is located below the drum.
  • the upper portion of the tub in the context of the present invention, the area of the tub, which is located above the bottom.
  • the flooding device is activated during the Nachwasch intimids if the selection temperature is less than or equal to a limit temperature.
  • the relation of the temperature of the washing liquid at the lower region of the tub to the selection temperature plays a particular role in the decision as to whether the activation of the circulating device makes sense or not.
  • the limit temperature therefore depends on the theoretically expected or measured during the heating step temperature of the washing liquid located in the lower region of the tub.
  • the limit temperature is equal to the temperature of the washing liquid located in the lower region of the tub or preferably up to 5 ° C higher.
  • the limit temperature is selected in a temperature range which is between the temperature of the washing liquid located in the lower region of the tub and a temperature which is higher by 5 ° C.
  • the temperature of the washing liquid located in the lower region of the tub is about 45.degree.
  • the selection temperature is equal to or up to 5 ° C higher than the temperature of the washing liquid located in the lower part of the tub, ie in the above example to 50 ° C, then probably the laundry temperature is not increased but rather slightly reduced, but an increase in the washing liquid in the laundry by activation of the flooding device can contribute to the improvement of the washing effect.
  • the limit temperature is preferably between 40 ° C and 60 ° C, more preferably between 45 ° C and 50 ° C.
  • the temperature of the washing liquid located in the lower region of the tub may vary at the end of the heating step.
  • the temperature of the washing liquid located in the lower region of the tub is in the range of 35 to 55 ° C, more in the range of 40 to 45 ° C.
  • the flooding device is deactivated after activation as a function of the washing liquid level and / or time-dependent. If no washing liquid can be pumped out of the sump, the circulating device is preferably deactivated so that it does not become damaged.
  • the method may include a time control of the circulating device and / or a control fluid level-dependent control for determining the time of deactivation of the circulating device.
  • the method may be deactivated after activation of the flooding device after a predetermined deactivation period.
  • the Umflut can also be deactivated depending on the washing liquid level in the lower portion of the tub, which can be determined for example by means of sensor means.
  • the flooding device is deactivated as a function of the washing liquid level when the amount of washing liquid to be conveyed by the flooding device is below a predetermined washing liquid quantity threshold value. Whether the amount of scrubbing liquid to be conveyed is below the predetermined scrubbing liquid amount threshold value depends on the level of scrubbing liquid in the lower area of the scrubber and can be determined, for example, by means of a sensor.
  • the predetermined washing liquid quantity threshold value is preferably chosen such that the circulatory device is not damaged during the delivery due to an insufficient amount of washing liquid available to the washing liquid and / or its operation is ineffective.
  • the flooding device is reactivated when the wash liquid level in the lower portion of the tub is above a predetermined wash liquid level threshold.
  • the circulating device can be operated at intervals. Whether this makes sense can be determined for example by means of sensors which measure the washing temperature and the washing liquid temperature in the lower region of the tub. If the ratio of wash temperature and wash liquid temperature in the lower portion of the tub indicates that activation of the purge means contributes to the efficiency of the process, the purge means will be activated, otherwise not.
  • the method is such that, in the case of activation of the flooding device, the flooding device at the beginning of the post-washing step, i. after the end of the heating step, is activated.
  • the circulating device is deactivated during the Nachwasch intimids when the circulating device is no longer sufficient to be pumped washing liquid available and / or when a predetermined activation period has expired.
  • the circulating device is preferably activated and deactivated once during the subsequent washing step, and the subsequent washing step is continued after the single-use operation of the circulating device.
  • a one-time activation of the flooding device is sufficient in the case of a selection temperature suitable for activating the flooding device, in order to achieve an improved efficiency of the washing method in a simple manner.
  • an amount of energy expended for operating the radiator during the heating step is adjusted such that the laundry temperature corresponds to the selection temperature.
  • the washing machine user sets the target temperature for washing the laundry in the post-washing step.
  • the washing temperature ie the actual temperature during the subsequent washing step, essentially depends on 3 input variables: 1. the selection temperature, 2. the amount of washing liquid and 3. the mixing temperature of washing liquid and laundry.
  • the mixture of washing liquid and laundry results from the fact that the laundry absorbs the washing liquid introduced before the heating step.
  • the amount of washing liquid to be heated is in Bottom of the tub, so that it covers the radiator, but is below the drum.
  • Selecting the selection temperature sets the temperature to be reached.
  • the amount of energy required during the heating step is adjusted such that the laundry temperature corresponds to the selection temperature.
  • the invention further relates to a washing machine with a tub for receiving washing liquid, a rotatably mounted in the tub drum for receiving laundry to be treated, a radiator, a Umflut Sk and a control device for controlling a washing program.
  • the control device is adapted to operate the washing machine during the implementation of the method described above.
  • the control device is in particular configured to adjust the amount of washing liquid required for the selected wash program such that no free liquor is present in the drum, that the heating element generates steam during the heating step, and that the circulating device depends on the selection temperature is activated.
  • the control device is adapted to disable the Umflut Nur in the case of activation time-dependent and / or washing liquid level dependent.
  • the control device can preferably determine and adjust the amount of energy expended for operating the radiator.
  • Fig. 1 shows a partial view of a washing machine in a sketched sectional view. Shown is the tub 3 a washing machine in which a drum 2 is rotatably mounted. In the drum 2 laundry 5 is filled for washing laundry. During a washing program, the drum 2 may be driven by a motor (not shown) to move the laundry 5 in the drum 2.
  • the drum 2 is provided in the present embodiment of stainless steel and with a plurality of openings for flooding with washing liquid.
  • a radiator 1 is arranged in the lower region of the tub 3, . The radiator 1 can heat in the tub 3 located washing liquid.
  • the radiator 1 is installed in the washing machine in such a way that with an appropriate level of washing liquid, the active heating surface of the radiator 1 is directly below the washing liquid surface, so that in this case steam forms on the surface of the washing liquid, which flows through the drum in the laundry.
  • an inlet valve (not shown) is arranged in the upper area of the washing machine, which provides the washing machine with water from the supply network.
  • the water is passed through a Ein Hugheskasten (not shown) in the tub 3, wherein optionally located in the dispenser detergent is flushed into the tub 3.
  • the tub 3 is connected to a drain device 6, which leads spent washing liquid from the tub 3 when activating a drain pump and usually opens into a sewer.
  • a flooding device 4 is further arranged to promote washing liquid 7 from the lower region of the tub 3 in the upper region of the tub 3.
  • the flooding device 4 has a circulating pump 4a, a circulating line 4b and an outlet 4c.
  • the circulating pump 4a is connected on the inlet or suction side to the lower region of the tub 3, the so-called sump, and can, when the circulating device 4 is activated, wash liquid 7 located therein via the circulating line 4b and an outlet 4c such as a nozzle in the upper region promote the tub 3 and the drum 2 and spray on the laundry 5.
  • a control device (not shown) of the washing machine controls the inlet valve, the activity of the drainage device 6, the activity of the flooding device 4, the motor and the radiator 1.
  • the control device activates the flooding device 4 as a function of the selection temperature. Below a predetermined washing liquid level (not shown), there is the risk that the circulating pump 4 a can no longer completely aspirate washing liquid when the circulating device 4 is activated. In this case, the flooding device 4 is deactivated by means of the control device. Furthermore, the washing machine sensor means, for example, a sensor for detecting the washing liquid level or pressure in the tub 3 have.
  • Fig. 2 shows by way of example a timing of a washing program WP as a diagram, which in the in Fig. 1 Washing machine shown is carried out and to which reference is made herein.
  • the sequence of the washing program comprises a detection phase ER, a washing phase Wa, a rinsing phase Sp and a spin phase Sc.
  • the washing machine user selects a dialing temperature by setting a washing program.
  • the washing program starts. At the beginning of the washing program, in the detection phase ER, the type and amount of laundry in the tub or in the drum is detected.
  • washing liquid is introduced through the inlet valve via the dispenser, whereby the stored in the dispenser detergent is introduced into the tub, so that the washing liquid is in the tub.
  • the scrubbing liquid wets the laundry in the drum while it is being let into the tub while free liquor collects by gravity in the lower region of the tub and covers the arranged in the tub radiator, but is below the drum as a washing liquid.
  • the laundry has therefore added washing liquid, but there is no free liquor in the drum.
  • the washing phase Wa starts.
  • the washing liquid is heated by means of a radiator to the predetermined temperature of the washing program, which may be higher by any K than the selection temperature.
  • the radiator When the radiator is turned on, a temperature stratification sets in, which leads to microsolation occurring on the radiator surface after a period of time. Because of the short distance to the surface, the vapor bubbles manage to persist there, and they exit as vapor. Since energy can be transmitted via the natural propagation behavior of the steam in principle into the wet laundry, the laundry is heated to the predetermined by the selection temperature wash temperature. After reaching the predetermined washing temperature or a predetermined time for the heating step, the heating of the washing liquid is stopped and a Nachwasch Colour Na follows. During the Nachwaschöns Na, the laundry is moved by means of a rotating drum. Depending on the selection temperature, the circulating device is activated or not activated.
  • the circulating device is activated during the subsequent washing step, if the highest possible process efficiency can be achieved with the washing liquid conveyed from the lower region of the liquor container into the upper region of the liquor container.
  • the circulating device is activated in particular if the selection temperature is less than 45 ° C.
  • the circulating device is deactivated when a predetermined period of time has elapsed and / or when the washing liquid level in the lower region of the tub has dropped to a level such that the circulating pump can no longer completely draw in washing liquid. If the dialing temperature is more than 45 ° C, the post-washing step Na is carried out without activating the circulating device.
  • the washing phase Wa is terminated by pumping out the washing liquid from the tub, wherein the drainage device is activated and the washing liquid is removed from the tub as far as possible. If necessary, the drum is operated at a high speed in order to remove the washing liquid present as a bound liquor from the textile fibers of the laundry as much as possible. Subsequently, fresh washing liquid, which consists essentially of water, is introduced into the tub. Then, a rinsing phase Sp starts, in which the drum moves the laundry in the washing liquid. Optionally, during the rinsing phase Sp, the flooding device can be activated. At the end of the rinsing phase Sp, the rinsing liquid is pumped off and removed via the drainage device.
  • a spin phase Sc is performed, which is used to drain the laundry serves.
  • the drum is rotated at a speed, so that the laundry is applied to the drum shell and the washing liquid is pulled out of the laundry through the openings of the drum due to the centrifugal force.
  • the drain device is activated so that the washing liquid is removed from the tub.

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

Claims (8)

  1. Procédé pour faire fonctionner une machine à laver comportant une cuve de lessivage (3) destinée à recevoir un liquide de lavage pour le traitement de linge (5), un tambour (2) monté rotatif dans la cuve de lessivage (3) pour recevoir le linge (5), un corps chauffant (1) et un dispositif de recirculation (4) pour le transport de liquide de lavage d'une zone inférieure de la cuve de lessivage (3) à une zone supérieure, par rapport à la position d'installation opérationnelle de la machine à laver, le procédé comprenant la réalisation d'un programme de lavage comprenant une étape de chauffage et une étape de rinçage réalisée après l'achèvement de l'étape de chauffage, un niveau de liquide de lavage se formant dans la cuve de lessivage (3) pendant l'étape de chauffage, de sorte que le corps chauffant (1) se trouve en dessous du niveau de liquide de lavage et le tambour (2) se trouve au-dessus du niveau de liquide de lavage, par rapport à la position d'installation opérationnelle de la machine à laver, et que la vapeur est produite par voie d'activation du corps chauffant (1), caractérisé en ce que le dispositif de recirculation (4) est activé pendant l'étape de rinçage lorsque la température sélectionnée pour le programme de lavage est inférieure ou égale à une température limite qui est supérieure ou égale à la température du liquide de lavage se trouvant dans la zone inférieure de la cuve de lessivage, ou qui est jusqu'à 5 °C plus élevée.
  2. Procédé selon l'une des revendications précédentes, caractérisé en ce que la température limite est comprise entre 40 et 60 °C, de préférence entre 45 et 50 °C.
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que le dispositif de recirculation (4) est désactivé après son activation en fonction du niveau de liquide de lavage et/ou en fonction du temps.
  4. Procédé selon la revendication 3, caractérisé en ce que le dispositif de recirculation (4) est désactivé en fonction du niveau de liquide de lavage si la quantité de liquide de lavage à transporter par le dispositif de recirculation est inférieure à une valeur seuil prédéterminée de quantité de liquide de lavage.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que le dispositif de recirculation (4) est réactivé après sa désactivation si le niveau de liquide de lavage dans la zone inférieure de la cuve de lessivage (3) est supérieur à une valeur seuil prédéterminée du niveau de liquide de lavage et/ou si une période de temps prédéterminée s'est écoulée.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que, en cas d'activation du dispositif de recirculation (4), celui-ci est activé au début de l'étape de rinçage.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une quantité d'énergie nécessaire au fonctionnement du corps chauffant (1) est réglée pendant l'étape de chauffage de sorte que la température de lavage corresponde à la température sélectionnée.
  8. Machine à laver comportant une cuve de lessivage (3) destinée à recevoir du liquide de lavage, un tambour (2) monté rotatif dans la cuve de lessivage (3) pour recevoir le linge (5) à traiter, un corps chauffant (1), un dispositif de recirculation (4) et un dispositif de régulation permettant de commander et/ou régler un programme de lavage, caractérisée en ce que le dispositif de régulation est conçu pour faire fonctionner la machine à laver pendant la réalisation des étapes de chauffage et de rinçage conformément à un procédé selon l'une des revendications 1 à 8.
EP15161681.0A 2014-04-09 2015-03-30 Procédé de fonctionnement d'un lave-linge et lave-linge Active EP2930261B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014105026.6A DE102014105026A1 (de) 2014-04-09 2014-04-09 Verfahren zum Betreiben einer Waschmaschine und Waschmaschine

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Publication Number Publication Date
EP2930261A1 EP2930261A1 (fr) 2015-10-14
EP2930261B1 true EP2930261B1 (fr) 2019-08-07

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DE (1) DE102014105026A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3649284B1 (fr) * 2017-07-04 2021-12-08 Electrolux Appliances Aktiebolag Procédé de commande du fonctionnement d'une machine à laver
DE102017219042A1 (de) * 2017-10-25 2019-04-25 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
DE102018200147A1 (de) 2018-01-08 2019-07-11 BSH Hausgeräte GmbH Verfahren zur Behandlung von Wäsche in einer Waschmaschine mit Umpumpsystem sowie Waschmaschine hierfür
DE102018122468A1 (de) * 2018-09-14 2020-03-19 Miele & Cie. Kg Verfahren und Vorrichtung zum thermischen Aktivieren einer Reinigungslösung vor einem Waschgang für ein Reinigungsgerät

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Publication number Priority date Publication date Assignee Title
DE19908804C5 (de) * 1999-03-01 2014-05-15 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine und automatisch gesteuerte Waschmaschine hierfür
EP1885935B1 (fr) * 2005-05-31 2019-09-04 LG Electronics Inc. Procede de commande d'un lave-linge
DE102008046465A1 (de) * 2008-09-09 2010-03-11 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine und Waschmaschine
EP2348151B1 (fr) * 2010-01-25 2017-07-05 Miele & Cie. KG Procédé de fonctionnement d'un lave-linge avec un dispositif d'écoulement
EP2381029B2 (fr) * 2010-04-26 2020-09-02 Miele & Cie. KG Procédé de fonctionnement d'un lave-linge

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Title
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EP2930261A1 (fr) 2015-10-14
DE102014105026A1 (de) 2015-10-15

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