EP2707533B1 - Procédé permettant de désinfecter du linge et unité lave- et sèche-linge - Google Patents

Procédé permettant de désinfecter du linge et unité lave- et sèche-linge Download PDF

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Publication number
EP2707533B1
EP2707533B1 EP20120718246 EP12718246A EP2707533B1 EP 2707533 B1 EP2707533 B1 EP 2707533B1 EP 20120718246 EP20120718246 EP 20120718246 EP 12718246 A EP12718246 A EP 12718246A EP 2707533 B1 EP2707533 B1 EP 2707533B1
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EP
European Patent Office
Prior art keywords
temperature
washing
laundry items
laundry
target
Prior art date
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Active
Application number
EP20120718246
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German (de)
English (en)
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EP2707533A1 (fr
Inventor
Andreas Hanau
Thomas Koch
Harald MOSCHÜTZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Priority to PL12718246T priority Critical patent/PL2707533T3/pl
Publication of EP2707533A1 publication Critical patent/EP2707533A1/fr
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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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/65—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of conditioning or finishing phases, e.g. for smoothing or removing creases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/26—Condition of the drying air, e.g. air humidity or 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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/203—Laundry conditioning arrangements
    • 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
    • D06F2101/14—Time settings
    • 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
    • D06F2101/18—Target temperature for the drying process, e.g. low-temperature cycles
    • 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
    • D06F2103/28—Air properties
    • D06F2103/32—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
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2105/14—Temperature of laundry

Definitions

  • the invention relates to a method for sterilizing temperature-sensitive laundry items with the following features: the laundry items are dry-exposed and heated for a predetermined period of time in the absence of water to a process air stream of defined temperature, and then the thus heated items of laundry are heated to a defined temperature significantly reduced setpoint temperature cooled. Moreover, the invention relates to a washer-dryer unit.
  • Such a method and a drying and sterilization cabinet for its implementation are the EP 0 262 451 A2 removable. According to this document, pieces of laundry are sterilized immediately after being dried.
  • the US 2007/0169282 A1 and the JP 4-158896 A respectively relate to a method and a washing machine for carrying it out, in which method items to be washed are first steamed to sterilize and moisten them or to dissolve their fibers and then to be washed only with the addition of wash water.
  • Sensitive laundry is known to be washed only at low temperature (eg, room temperature or 30 ° C to 40 ° C) because at higher wash temperatures, the fabric or dyeing of the laundry would suffer and be damaged, at least over many washes. This can lead to the decolorization of a textile or the transfer of color from one to another textile. Disadvantage of washing at low temperature, however, is that in the laundry contained germs are not killed by such washing to the extent as when washing at high temperature such. B. 95 ° C (so-called cooking linen). This disadvantage has been partially circumvented by the fact that the still wet laundry is exposed to the washing process by means of a tumble dryer hot air.
  • the DE 33 43 236 A1 discloses a drying cabinet, in which the laundry still wet from a previous washing process is introduced, where it is first dried and then sterilized thereon.
  • the method according to the invention has the advantage that the hot air supplied to the laundry in the first process step damages the delicate laundry far less than during a drying process subsequent to a washing process. Due to the absence of water and a removal of color from a textile treated according to the invention and thus both discoloration and transfer to another textile is excluded. Also, a shrinkage of the laundry is prevented by the action of water at elevated temperature. Yet another advantage lies in the fact that for sterilizing less energy for heating the (still) dry Laundry is required as with a corresponding heating conventional wet laundry.
  • a preferred embodiment of the invention provides that the setpoint temperature (Tp soll ) corresponds to a room temperature (Tp space ), ie the temperature of an environment of the device or device in which the method is carried out. It is therefore in particular the temperature of about 20 ° C usually prevailing in an inhabited closed room.
  • a first particularly preferred, further developed embodiment of the invention provides that the setpoint temperature (Tp soll ) is equal to a maximum washing temperature that occurs during the washing process. This ensures that the maximum permissible temperature is never exceeded during the subsequent washing of the laundry items.
  • a second particularly preferred, further developed embodiment of the invention provides that the target temperature (Tp soll ) is calculated using a previously determined loading amount of laundry items which are sterilized and a predetermined washing temperature of the subsequent washing program, so that after the addition of water to the amount of laundry sets a temperature in the laundry sets, which is less than or equal to the washing temperature. In this way, the heat used for sterilization is advantageously utilized in the subsequent washing process. More preferably, the laundry items are dried after washing in a conventional manner, which then also creates a connection to a conventional drying process.
  • Another preferred embodiment of the invention provides that a period of between five and twenty-five minutes is selected as the predetermined period (T), in particular one between ten and twenty minutes, inclusive.
  • a further preferred embodiment of the invention provides that a temperature with a value range between 60 ° C and 120 ° C is specified as the defined temperature (Tp), in particular one between 70 ° C and 90 ° C, inclusive.
  • Yet another preferred embodiment of the invention provides that a temperature of the process air flow is measured immediately before the laundry is exposed to it, and a temperature of the process air flow is measured immediately after the laundry has been exposed to it and both measured temperatures to control the temperature the laundry items are used.
  • the washer-dry unit according to the invention accordingly has a control device for carrying out the method according to the invention or one of its preferred developments.
  • a preferred embodiment of the invention provides that in the washer-drying unit, a timer unit is provided, by means of which the predetermined period (T) is predetermined by value.
  • a temperature control unit is provided in the washer-drying unit, by means of which the desired temperature (Tp soll ) can be predetermined in terms of value and, in particular, as described above, can be calculated.
  • the temperature control unit includes a first temperature sensor for measuring a temperature of the process airflow immediately after the laundry items have been exposed to it, and a second temperature sensor for measuring a temperature of the process airflow immediately before the laundry items are exposed to it, and is the temperature control unit arranged such that both measured temperatures are used to control the temperature of the laundry items.
  • a further preferred embodiment of the invention provides that in the washer-dryer unit, the control device is designed so that it starts a previously selected wash program of the washer-dryer after completion of the cooling down.
  • the laundry to be washed ie the laundry items to be washed
  • the heating takes place at a defined temperature Tp, which is either fixed by the heating device or can be preselected. It is advantageous if the defined temperature Tp is selected in a value range between 60 ° C and 120 ° C, in particular in a value range between 70 ° C and 90 ° C, each inclusive.
  • Tp the defined temperature
  • the laundry is exposed to this temperature for a given period T, the given period T being between five and twenty five minutes, in particular between ten and twenty minutes, inclusive.
  • the given period T is fixed either by the device causing the heating or it is preselected.
  • the heating in the hot air flow causes the intended sterilization, namely an almost complete killing of the germs contained in the laundry such. As bacteria, viruses, mites etc.
  • the laundry is cooled.
  • the laundry is washed in a further development of the invention in a conventional manner and also dried.
  • the drying can be carried out, for example, in a dryer at low, the sensitivity of the laundry adapted temperature, since the sterilization of the laundry has already taken place.
  • the laundry is characterized much more spared than when drying at a correspondingly high temperature in the context of a conventional washing-drying process, since the laundry is heated only in the dry state above the maximum temperature permissible for washing.
  • Another advantage of this development is that the germs killed in the previous treatment of the laundry with process air flow are flushed out of the laundry items by the subsequent washing process and thus removed therefrom. Namely, in the methods of the conventional washing-drying process without the preliminary sterilization, the germs are not killed until the drying process following washing, leaving their remains in the dried laundry.
  • the cooling down is carried out until the sterilized laundry, depending on the selected embodiment of the method according to the invention, room temperature Tp room or a target temperature Tp soll , the value is approximately equal to a washing process in the subsequent washing maximum washing temperature, or at the after the subsequent addition of water for washing in the laundry sets a temperature less than or equal to the washing temperature.
  • Fig. 1 shows the two possible gradients of the temperature Temp, shown over the time t.
  • the temperature Temp rises from the room temperature Tp space to the defined temperature Tp. There, it remains over the predetermined time period T, in order then to drop to the setpoint temperature Tp soll .
  • the temperature profile is initially the same as described above in one case. After the end of the predetermined period T, however, the temperature Temp then drops to the room temperature Tp space , which is shown partially in dashed lines.
  • a combined washing-drying unit in which washing and drying are carried out in one and the same drum, so that no transfer of the laundry from a washing machine to a tumble dryer
  • a control device CTRL which controls the usually existing components of a combined washer-dryer unit including pump (s) for water inlet and outlet, hot air device, motor (s) for moving the laundry drum and a program control unit so that in Operation overall, the inventive method is performed.
  • a combined washer-dryer is symbolic in Fig. 2 shown.
  • the combined washer-dry unit has a timer unit Z, by means of which the defined period of time T can be predetermined in terms of value.
  • the combined washer-dryer unit has a temperature control unit TS, by means of which the setpoint temperature Tp soll should be predetermined in terms of value, to which the laundry items are to be cooled at the end of the sterilization process.
  • the control device CTRL is advantageously designed so that it starts after disinfecting and cooling down the laundry a previously directly or indirectly selected wash program.
  • Indirect selection is understood to mean that a desired washing program is already selected with the selection "disinfecting".
  • FIG. 3 shows a vertical section through a washer-dryer unit.
  • laundry 1 which is located in a rotatable drum 2, which in turn is received in a swinging suspended, but not rotatable tub 3.
  • the tub 3 is located with all other components of the washer-dryer unit in a housing 5.
  • movable sleeve 6 is an access of created outside the housing 5 to the tub 3 and the drum 2; This access is closed by a door 7.
  • An inlet 8 for fresh water and a drain 9 for wastewater, the latter also provided with a pump 10, are also present.
  • a process air channel 11 with a fan 12 and a heater 13 are provided to drive process air, symbolized by arrows 14, through the drum 2 and the laundry 1 located therein.
  • a condenser with which moisture which has extracted the heated by the heater 13 process air from the laundry, is condensed out of the process air, wherein the resulting liquid condensate flows into the tub 3 and is disposed of through the drain 9.
  • Two temperature sensors 15 and 16 connected to the temperature control unit TS serve to control and regulate the temperature of the flowing process air 14.
  • a first temperature sensor 15 is placed in the process air duct 11 so that it measures the temperature of the process air 14 flowing directly from the tub 3; the second temperature sensor 16 is placed in the process air duct 11 so that it measures the temperature of the process air 14 flowing from the heater 13.
  • the process air 14 In order to allow a rapid heating to a desired high temperature Tp, the process air 14 must have a slightly above the temperature Tp when entering the tub 3; To control this, the second temperature sensor 16 is used. With the first temperature sensor 15, the temperature of the laundry items 1 in the tub 1 can be estimated relatively accurately, so that exceeding the temperature Tp in the laundry items 12 can be safely avoided.
  • the process air duct 11 with blower 12, heater 13, first temperature sensor 15 and second temperature sensor 16 also serves to sterilize the laundry 1 as described in a dry state by hot process air is conveyed through the dry laundry 1 in the manner already described. This is controlled by the already mentioned control unit CTRL, which is connected to all the components just mentioned for their operation and application, in FIG. 3 however, for clarity's sake not shown. After sterilization, the laundry 1 can then be washed in a conventional manner.
  • the combined washer-dryer also has the advantage that at the beginning of the washing process in their components due to the previous Entkeimreaes still stored residual heat can be used for heating the possibly necessary for the washing process reheating the wash water, which contributes to a total (further) energy savings.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (12)

  1. Procédé destiné à stériliser des pièces de linge (1) sensibles à la température, comprenant les caractéristiques suivantes :
    - les pièces de linge (1) sont exposées à l'état sec à un courant d'air de processus (14) de température définie (Tp) pendant une période de temps prédéfinie (T) en absence d'eau et sont échauffées,
    - ensuite les pièces de linge (1) ainsi échauffées sont refroidies à une température théorique (Tpsoll) nettement réduite par rapport à la température définie (Tp), caractérisé en ce que
    - suite à cela, les pièces de linge refroidies (1) sont lavées pendant une opération de lavage.
  2. Procédé selon la revendication 1, dans lequel la température théorique (Tpsoll) correspond à une température ambiante (TpRaum).
  3. Procédé selon la revendication 1, dans lequel la température théorique (Tpsoll) est égale à une température de lavage maximale se produisant lors de l'opération de lavage.
  4. Procédé selon la revendication 1, dans lequel la température théorique (Tpsoll) est calculée en utilisant une quantité de chargement des pièces de linge (1) constatée au préalable, lesquelles sont stérilisées, et en utilisant une température de lavage prédéfinie de l'opération de lavage, de sorte qu'après une adjonction d'eau à la quantité de chargement, une température se règle dans les pièces de linge (1), laquelle est inférieure ou égale à la température de lavage.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les pièces de linge (1) sont séchées après le lavage.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une période de temps comprise entre cinq et vingt-cinq minutes est sélectionnée comme période de temps prédéfinie (T), notamment une telle période de temps comprise entre dix et vingt minutes, respectivement y compris ces valeurs.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une température ayant une plage de valeurs comprise entre 60°C et 120°C est prédéfinie comme température définie (Tp), notamment une telle température comprise entre 70°C et 90°C, respectivement y compris ces valeurs.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une température du courant d'air de processus (14) est mesurée directement avant que les pièces de linge (1) ne lui soient exposées, et en ce qu'une température du courant d'air de processus (14) est mesurée directement après que les pièces de linge (1) lui aient été exposées, et en ce que les deux températures mesurées sont utilisées pour régler la température des pièces de linge (1).
  9. Unité de lavage-séchage, caractérisée en ce qu'elle présente un dispositif de commande (CTRL) pour la réalisation d'un procédé destiné à stériliser des pièces de linge sensibles à la température dans l'unité de lavage-séchage, le dispositif de commande (CTRL) présentant les fonctions suivantes :
    - il expose les pièces de linge sèches (1) à un courant d'air de processus (14) de température définie (Tp) pendant une période de temps prédéfinie (T) en absence d'eau pour les échauffer,
    - ensuite, il refroidit les pièces de linge (1) ainsi échauffées à une température théorique (Tpsoll) nettement réduite par rapport à la température définie (Tp), caractérisé en ce que
    - suite à cela, il démarre un programme de lavage de l'unité de lavage-séchage, sélectionné au préalable.
  10. Unité de lavage-séchage selon la revendication 9, caractérisée en ce qu'elle présente une unité d'horloge (Z) au moyen de laquelle la période de temps prédéfinie (T) peut être prédéfinie quant aux valeurs.
  11. Unité de lavage-séchage selon les revendications 9 et 10, caractérisée en ce qu'elle présente une unité de température (TS) au moyen de laquelle la température théorique (Tpsoll) peut être prédéfinie quant aux valeurs.
  12. Unité de lavage-séchage selon la revendication 11, caractérisée en ce que l'unité de commande de température (TS) présente un premier capteur de température (15) destiné à mesurer une température du courant d'air de processus (14) directement après que les pièces de linge (1) lui aient été exposées, et un deuxième capteur de température (16) destiné à mesurer une température du courant d'air de processus (14) directement avant que les pièces de linge (1) ne lui soient exposées, et en ce que l'unité de commande de température (TS) est configurée de manière à ce que les deux températures mesurées soient utilisées pour régler la température des pièces de linge (1).
EP20120718246 2011-05-09 2012-05-04 Procédé permettant de désinfecter du linge et unité lave- et sèche-linge Active EP2707533B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12718246T PL2707533T3 (pl) 2011-05-09 2012-05-04 Sposób wyjaławiania prania i zespół piorąco-suszący

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110075501 DE102011075501A1 (de) 2011-05-09 2011-05-09 Verfahren zum schonenden Entkeimen von Wäsche und Waschtrockeneinheit
PCT/EP2012/058226 WO2012152683A1 (fr) 2011-05-09 2012-05-04 Procédé permettant de désinfecter du linge et unité sèche-linge

Publications (2)

Publication Number Publication Date
EP2707533A1 EP2707533A1 (fr) 2014-03-19
EP2707533B1 true EP2707533B1 (fr) 2015-03-11

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US (1) US9109320B2 (fr)
EP (1) EP2707533B1 (fr)
KR (1) KR20140023342A (fr)
CN (1) CN103518013B (fr)
DE (1) DE102011075501A1 (fr)
PL (1) PL2707533T3 (fr)
RU (1) RU2552513C1 (fr)
WO (1) WO2012152683A1 (fr)

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JP6653419B2 (ja) * 2016-09-12 2020-02-26 パナソニックＩｐマネジメント株式会社 洗濯乾燥機
RU2677476C1 (ru) * 2017-09-15 2019-01-17 Российская Федерация, от имени которой выступает Министерство обороны Российской Федерации Способ теплохимической дезинфекции и сушки вещевого имущества
US10731289B2 (en) 2017-10-26 2020-08-04 Samsung Electronics Co., Ltd. Clothes dryer and method for performing sterilization course thereof
CN109594289A (zh) * 2018-12-27 2019-04-09 无锡小天鹅股份有限公司 衣物处理装置的控制方法、装置以及衣物处理装置
CN112796079B (zh) * 2020-12-31 2023-07-18 珠海格力电器股份有限公司 一种衣物灭菌装置、方法及衣物处理装置
DE102022207952A1 (de) 2022-08-02 2024-02-08 BSH Hausgeräte GmbH Waschmaschine mit Luftheizung und verbessertes Hygieneverfahren bei deren Betrieb
DE102022207950A1 (de) 2022-08-02 2024-02-08 BSH Hausgeräte GmbH Waschmaschine mit Luftheizung und Verfahren zu deren Betrieb

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Publication number Publication date
WO2012152683A1 (fr) 2012-11-15
DE102011075501A1 (de) 2012-11-15
US9109320B2 (en) 2015-08-18
KR20140023342A (ko) 2014-02-26
PL2707533T3 (pl) 2015-08-31
RU2552513C1 (ru) 2015-06-10
US20140082852A1 (en) 2014-03-27
CN103518013A (zh) 2014-01-15
CN103518013B (zh) 2016-02-10
EP2707533A1 (fr) 2014-03-19

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