EP2271801B1 - Sèche-linge à évacuation avec détection d'un flux d'air à contre-courant et son procédé de fonctionnement - Google Patents

Sèche-linge à évacuation avec détection d'un flux d'air à contre-courant et son procédé de fonctionnement Download PDF

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Publication number
EP2271801B1
EP2271801B1 EP09737986A EP09737986A EP2271801B1 EP 2271801 B1 EP2271801 B1 EP 2271801B1 EP 09737986 A EP09737986 A EP 09737986A EP 09737986 A EP09737986 A EP 09737986A EP 2271801 B1 EP2271801 B1 EP 2271801B1
Authority
EP
European Patent Office
Prior art keywords
air
process air
temperature sensor
drum
dryer
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.)
Not-in-force
Application number
EP09737986A
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German (de)
English (en)
Other versions
EP2271801A1 (fr
Inventor
Kai-Uwe Bache
Philipp Steusloff
Andy Wischer
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
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2271801A1 publication Critical patent/EP2271801A1/fr
Application granted granted Critical
Publication of EP2271801B1 publication Critical patent/EP2271801B1/fr
Not-in-force legal-status Critical Current
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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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • 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
    • D06F2105/32—Air flow control means
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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

Definitions

  • the invention relates to an exhaust air dryer with a drum for drying wet laundry by means of warm process air, a heating device for heating the process air in a first process air duct in front of the drum into which a supply air duct opens, a second process air duct after the drum, which merges into an exhaust duct, a fan and a first temperature sensor in the first process air duct, and a method for its operation.
  • the invention relates to a vented air dryer with back-air detection, i. a detection of an opposite to the operationally provided flow direction flowing air flow (counter air flow), and a method for its operation.
  • drying material in particular laundry, which is located in a generally rotating drum, is dried by passing through the drum and thus the dry material a heated air stream which removes moisture from the dry product, whereby the dry material is gradually dried ,
  • Process air stream is heated in a supply line (supply air duct or herein “first process air duct”) in front of the drum (in the case of a tumble dryer also “laundry drum”) by means of a heater and after passage through the drum either to the outside ( Exhaust air dryer) or fed to a heat exchanger in which the air flow is cooled and the moisture removed from the dry matter and entrained in the air flow precipitates as condensate. Mixed forms thereof are also known.
  • a blower process air blower
  • the moist, warm air originating from the drum is transported through an exhaust air outlet into the installation room or via an exhaust system to the outside.
  • an exhaust air dryer In an exhaust air dryer, the moist, warm air originating from the drum is transported through an exhaust air outlet into the installation room or via an exhaust system to the outside.
  • air is forced through the exhaust air outlet in the exhaust air dryer. This can lead to a disruption of the overheating system which is normally present in the exhaust air dryer.
  • a temperature sensor or temperature limiter is arranged in an exhaust air dryer usually in the flow direction of the process air behind the heater and in front of the drum, which can turn off the heater at a detected overheating in the exhaust air dryer.
  • air heated by the heating device can flow in the opposite direction, ie. away from the drum, flow.
  • This hot air can flow into a supply air duct or, if present, into a recirculating air duct.
  • a hot air flow in the opposite direction of flow can lead to disturbances and is therefore undesirable.
  • the object of the invention is therefore to provide an exhaust air dryer, which allows reliable detection of the occurrence of a counter air flow during operation of the exhaust air dryer.
  • the invention thus relates to an exhaust air dryer with a drum for drying dry material by means of warm process air, a heater for heating the Process air in a first process air duct in front of the drum into which a supply air duct opens, a second process air duct after the drum, which merges into an exhaust duct, a blower and a first temperature sensor in the first process air duct, the exhaust air dryer, a device for generating a heat accumulation at the first temperature sensor Occurrence of a counter air flow, which obstructs an air flow in the first process air duct when a counterflow of air from the drum in the direction of the heater occurs and thereby generates the heat accumulation at the first temperature sensor.
  • Temperature sensor as used herein is to be construed broadly. This includes, for example, any temperature sensor which merely measures a temperature value and forwards this temperature value to a suitable processing device, for example a program controller of the Vented dryer. Temperature sensor according to the invention is also such a sensor device, which can initiate a measure as a result of measuring a temperature value without the detour via a process control, for example, the interruption of a circuit. Such a sensor device is generally referred to as a "temperature monitor”.
  • a temperature monitor may, for example, consist of a bimetallic plate which deforms suitably in the event of a temperature change and in particular can interrupt a circuit when a certain upper temperature limit is reached by actuating a correspondingly assigned switch.
  • the device for generating a heat accumulation between the heater and the drum is arranged.
  • the device is disposed between the first temperature sensor and the drum.
  • the first temperature sensor is generally used to detect a heat build-up. In a preferred embodiment, therefore, a distance between the device and the first temperature sensor of 1 to 15 cm, in particular 2 to 10 cm.
  • the device is preferably a folding device.
  • this folding device changes its position depending on the direction of an air flow in the first process air duct.
  • folding device is to be interpreted broadly.
  • folding device means that it is a device that can assume different positions in the first process air duct, which manifest themselves in a more or less large obstruction of an air flow in the first process air duct.
  • the shape and arrangement of the folding device are not limited as long as the purpose of the present invention is achieved.
  • the folding device is a substantially planar, pivotable plate.
  • the folding device may have at its one end, on which it is arranged, for example, on a wall of the first process air circuit or on the first temperature sensor, a shape suitable for the arrangement.
  • the arrangement of the folding device in the exhaust air dryer is generally carried out via a suitable connection, which allows any necessary pivoting of the folding device, such as a hinge mechanism.
  • the folding device is arranged by means of a hinge or spring mechanism on a wall of the first process air duct or on the first temperature sensor. More preferably, the folding device is arranged by means of a hinge mechanism on the wall of the first process air duct or on the first temperature sensor.
  • a planar plate may be suitably bent at one end to form a hinge with a holder, in particular an arrangement of one lug or lobes, on a wall of the first process air channel or on the first sensor.
  • the device here the flat plate, is thus rotatably mounted on the wall or the sensor.
  • the shape of the device may differ from a flat plate.
  • embodiments may provide for the use of two or more thermal heat generation devices upon the occurrence of a countercurrent flow.
  • the change of the position of the device in the first process air duct as a result of a varying air flow is preferably chosen so that the device, in particular the folding device, at a reversal of the flow direction of the air in the first process air duct again their previous position can take.
  • an angle which the device, in particular the folding device, can form with the direction of flow of the air is suitably limited.
  • the possibility of generating a heat build-up by the device when a counterflow of air occurs is important. It is not necessary for this purpose that an air flow in the first process air duct is completely interrupted.
  • the device in particular the folding device, in an open, in particular in an unfolded state, does not completely close the first process air channel.
  • a second temperature sensor is present in the exhaust air dryer according to the invention.
  • a second temperature sensor which may possibly also be combined with another device for generating a heat accumulation, the reliability of the exhaust air dryer increases.
  • a second temperature sensor is connected to a program control of the exhaust air dryer.
  • the exhaust air dryer according to the invention can be operated as a pure exhaust air dryer, in which the entire amount of passing out of the drum moist, warm process air is passed as exhaust air into the installation room.
  • the exhaust air dryer according to the invention is operated with a recirculated air fraction.
  • a first end of a circulating air channel opens into the first process air channel and a second end of the circulating air channel into the second process air channel.
  • the content of lint in the process air coming out of the drum can be reduced by one or more suitable lint filters.
  • the term "lint filter” is to be interpreted broadly.
  • this also includes a heat exchanger (condenser), in which the humid-warm air emerging from the drum, which is also enriched with lint, by heat exchange with a suitable cooling medium (supply air or cooling air in an optional air-to-air heat exchanger; Evaporator of an optionally existing heat pump) is cooled and condenses moisture contained in the process air.
  • the wet condenser can act as a kind of lint filter.
  • nets with different mesh sizes can also be used as lint filters be used.
  • the exhaust air dryer in the embodiment with a recirculating air duct has a lint trap in the recirculating air duct.
  • the exhaust air dryer according to the invention can be operated with or without a heat exchanger for condensing the moisture contained in the warm process air after passing through the drum.
  • an occurrence of a counterflow of air in the form of an optical and / or acoustic signal is indicated.
  • an acoustic signal display could be used as the display means, e.g. one or more encoders with different sounds or tones, or a speech synthesizer with a message such as e.g. "Counter air” or "overheating”.
  • a corresponding information can also be done via an optical signal display (LED or LCD).
  • the exhaust air dryer on display means for occurrence of a counter air flow.
  • the invention also relates to a method for operating an exhaust air dryer, comprising a drum for drying wet laundry by means of warm process air, a heating device for heating the process air in a first process air duct in front of the drum into which a supply air duct opens, a second process air duct downstream of the drum passing into an exhaust duct, a blower, a first temperature sensor in the first process air duct and a device for generating a heat accumulation upon the occurrence of a counter air flow, wherein upon occurrence of a counter air flow from the drum toward the heater, the apparatus obstructs and obstructs an air flow in the first process air duct Heat accumulation generated at the first temperature sensor.
  • the first temperature sensor it is preferable for the first temperature sensor to switch off the heating device upon reaching a predefined maximum temperature value T max and / or to indicate the occurrence of a counterflow of air with a display means.
  • the predetermined temperature value T max becomes suitable in Depending on factors such as the distance of the first temperature sensor from the device, the location of the arrangement of the second temperature sensor and / or the design of the airways (first and second process air duct, circulating air duct, etc.) set.
  • the first and, if present, a second temperature sensor are connected to a program control of the exhaust air dryer.
  • the exhaust air dryer according to the invention has the advantage that an occurrence of a counter air flow can be reliably detected, whereupon suitable or by a user of the exhaust dryer suitable countermeasures, in particular a shutdown of the heating of the exhaust air dryer can be initiated. Due to the invention, the use of a second temperature sensor is unnecessary.
  • FIG. 1 is shown in partial sectional view of a vented dryer 1.
  • This has in its upper part on a program control 17, which is adjustable by an operating handle 19 and preferably may contain a fuzzy processor controller, not shown here.
  • 18 means an optical or acoustic display means for different states of the exhaust air dryer 1, in particular the occurrence of a counter air flow.
  • the exhaust air dryer 1 has a drum 2, which is accessible via a pot 20 from a loading door 21 and can be introduced into the drum 2 via the laundry items to be dried and removed again.
  • a supply air opening 22 is present, into which air is sucked from outside via a blower 11 and conducted via a supply air duct 5 into a first process air duct 4.
  • the fresh process air also referred to as "supply air”
  • the heating device 3 flows via a heating device 3 to the inlet 23 of the drum 2.
  • a first temperature sensor 13 designed as a folding device 12 for generating a heat accumulation and a second temperature sensor 25.
  • the second temperature sensor 25 detects at predetermined time intervals periodically the temperature of the process air and leads the measured value of the program control 17.
  • Fig. 1 In this normal operation of the exhaust air dryer, the warm air coming from the heater 3 (referred to in the first and second process air ducts as "process air”) pushes the folding device 12 away from the first temperature sensor 13 in the direction of a wall 28 of the first process air channel 4.
  • the folding device 12 is connected via a hinge mechanism 14 with the wall 28.
  • the heated process air can thus flow freely and first passes through the drum 2.
  • the then laden with moisture warm process air flows at the drum outlet 24 through a second process air channel 8 in which a second lint filter 26 is initially.
  • the process air continues to flow through the second process air channel 8, which is located at the in Fig. 1 shown embodiment in a recirculating air duct 7 and an exhaust duct 9 splits.
  • FIG. 1 A part of the process air from the drum 2 thus passes in accordance Fig. 1 via the exhaust duct 9 to an exhaust air outlet 27, from where the process air flows as exhaust air into the installation room of the exhaust air dryer or in an exhaust air system not shown here.
  • the exhaust air dryer 1 of this embodiment thus operates according to the exhaust air principle with a recirculated air portion.
  • the relative proportions of supply air and circulating air via a first valve 15 (designed here as a flap) in the supply air duct 5 and a second valve 16 (also configured here as a flap) in the recirculating air channel 7 can be adjusted.
  • FIG. 2 shows a section of the exhaust air dryer of Fig. 1 in which the relevant part of a first process air channel 4 is visible. Shown is a heater 3, above which in the normal, ie operationally provided flow direction of the air, indicated here by two open arrows, a first temperature sensor 13, a device 12 for generating a heat accumulation and a second temperature sensor 25 are. 28 denotes a wall of the first process air channel 4.
  • Fig. 2 the device 12 for generating a heat accumulation is shown in a deployed state, ie in a state after the occurrence of a counter air flow through which it comes to the first temperature sensor 13 due to the obstruction of the air flow of the air from the heater 3 to a heat accumulation.
  • the device 12 is attached to a wall 28 of the first process air channel 4.
  • the small open arrow shows the obstructed air flow from the heater 3.
  • the two large open arrows indicate a counter air flow, which has led to the unfolding of the device 12.
  • the first temperature sensor 13 may register a value of the air temperature increased due to the heat build-up. 25 means a second temperature sensor, which contributes to increased reliability of the exhaust air dryer.
  • FIG. 3 shows a plan view of an enlarged part of the section of FIG. 2 , The top view is along the in FIG. 2 drawn filled arrow. The two possible directions of the air flow are illustrated by a double arrow.
  • the device 12 is generated to generate a heat accumulation in the presence of a counter air flow at one end to form a hinge mechanism 14 at one point of the wall 28 of the first process air duct not shown in detail, in which the device 12 is rotatably mounted , 13 means a first temperature sensor 13, which registers a heat accumulation generated due to the unfolded device 12.

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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)
  • Drying Of Solid Materials (AREA)

Claims (14)

  1. Sèche-linge à évacuation (1) doté d'un tambour (2) pour le séchage de linge humide au moyen d'air de processus chaud, d'un dispositif de chauffage (3) destiné à échauffer l'air de processus dans un premier canal d'air de processus (4) en amont du tambour (2), dans lequel canal d'air de processus débouche un canal d'air d'arrivée (5), dans un deuxième canal d'air de processus (8) en aval du tambour (2), lequel se transforme en un canal d'air d'évacuation (9), d'un ventilateur (11) et d'un premier capteur de température (13) placé dans le premier canal d'air de processus (4), caractérisé en ce que le sèche-linge à évacuation présente un dispositif (12) destiné à générer une accumulation de chaleur sur le premier capteur de température (13) lors de l'apparition d'un contre-courant d'air, lequel dispositif, lors de l'apparition d'un contre-courant d'air du tambour (2) en direction du dispositif de chauffage (3) empêche un courant d'air dans le premier canal d'air de processus (4) et génère ainsi l'accumulation de chaleur sur le premier capteur de température (13).
  2. Sèche-linge à évacuation (1) selon la revendication 1, caractérisé en ce que le dispositif (12) destiné à générer une accumulation de chaleur est disposé entre le dispositif de chauffage (3) et le tambour (2).
  3. Sèche-linge à évacuation (1) selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le dispositif (12) est disposé entre le premier capteur de température (13) et le tambour (2).
  4. Sèche-linge à évacuation (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'un écart entre le dispositif (12) et le premier capteur de température (13) est de 1 à 15 cm.
  5. Sèche-linge à évacuation (1) selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le dispositif (12) est un dispositif à clapet (12).
  6. Sèche-linge à évacuation (1) selon la revendication 5, caractérisé en ce que le dispositif à clapet (12) est disposé sur une paroi (28) du premier canal d'air de processus (4) ou sur le premier capteur de température (13) au moyen d'un mécanisme à charnière ou à ressort (14).
  7. Sèche-linge à évacuation (1) selon la revendication 6, caractérisé en ce que le dispositif à clapet (12) est disposé sur la paroi (28) du premier canal d'air de processus (4) ou sur le premier capteur de température (13) au moyen d'un mécanisme à charnière (14).
  8. Sèche-linge à évacuation (1) selon la revendication 5, caractérisé en ce que le dispositif à clapet (12), dans un état ouvert, n'obture pas complètement le premier canal d'air de processus (4).
  9. Sèche-linge à évacuation (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un deuxième capteur de température (25) est présent.
  10. Sèche-linge à évacuation (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une première extrémité (6) d'un canal de circulation d'air (7) débouche dans le premier canal d'air de processus (4) et en ce qu'une deuxième extrémité (10) du canal de circulation d'air (7) débouche dans le deuxième canal d'air de processus (8).
  11. Sèche-linge à évacuation (1) selon la revendication 10, caractérisé en ce que le sèche-linge à évacuation (1) présente un piège à peluches (29) dans le canal de circulation d'air (7).
  12. Sèche-linge à évacuation (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le sèche-linge à évacuation (1) présente des moyens d'indication (18) pour une apparition d'un contre-courant d'air.
  13. Procédé destiné au fonctionnement d'un sèche-linge à évacuation (1) doté d'un tambour (2) pour le séchage de linge humide au moyen d'air de processus chaud, d'un dispositif de chauffage (3) destiné à échauffer l'air de processus dans un premier canal d'air de processus (4) en amont du tambour (2), dans lequel canal d'air de processus débouche un canal d'air d'arrivée (5), dans un deuxième canal d'air de processus (8) en aval du tambour (2), lequel se transforme en un canal d'air d'évacuation (9), d'un ventilateur (11), d'un premier capteur de température (13) placé dans le premier canal d'air de processus (4), caractérisé en ce qu'un dispositif (12) destiné à générer une accumulation de chaleur lors de l'apparition d'un contre-courant d'air est prévu sur le premier capteur de température (13), le dispositif (12) empêchant un courant d'air dans le premier canal d'air de processus (4) lors de l'apparition d'un contre-courant d'air du tambour (2) en direction du dispositif de chauffage (3) et générant ainsi l'accumulation de chaleur sur le premier capteur de température (13).
  14. Procédé selon la revendication 13, caractérisé en ce que le premier capteur de température (13) arrête le dispositif de chauffage (3) lorsqu'une valeur de température maximale prédéfinie Tmax est atteinte et/ou indique l'apparation d'un contre-courant d'air à l'aide d'un moyen d'indication (18).
EP09737986A 2008-04-29 2009-04-08 Sèche-linge à évacuation avec détection d'un flux d'air à contre-courant et son procédé de fonctionnement Not-in-force EP2271801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008021376A DE102008021376A1 (de) 2008-04-29 2008-04-29 Ablufttrockner mit Gegenlufterkennung sowie Verfahren zu seinem Betrieb
PCT/EP2009/054246 WO2009132942A1 (fr) 2008-04-29 2009-04-08 Sèche-linge à évacuation avec détection d'un flux d'air à contre-courant et son procédé de fonctionnement

Publications (2)

Publication Number Publication Date
EP2271801A1 EP2271801A1 (fr) 2011-01-12
EP2271801B1 true EP2271801B1 (fr) 2011-12-28

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EP09737986A Not-in-force EP2271801B1 (fr) 2008-04-29 2009-04-08 Sèche-linge à évacuation avec détection d'un flux d'air à contre-courant et son procédé de fonctionnement

Country Status (6)

Country Link
US (1) US8528226B2 (fr)
EP (1) EP2271801B1 (fr)
CN (1) CN102016157B (fr)
AT (1) ATE539190T1 (fr)
DE (1) DE102008021376A1 (fr)
WO (1) WO2009132942A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11186943B2 (en) 2017-10-09 2021-11-30 Whirlpool Corporation Filter configured for being used in a machine for drying laundry and machine for drying laundry equipped with such a filter
US11761141B2 (en) 2017-10-09 2023-09-19 Whirlpool Corporation Filter configured for being used in a machine for drying laundry and machine for drying laundry equipped with such a filter

Also Published As

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US8528226B2 (en) 2013-09-10
DE102008021376A1 (de) 2009-11-05
EP2271801A1 (fr) 2011-01-12
CN102016157B (zh) 2012-05-30
CN102016157A (zh) 2011-04-13
ATE539190T1 (de) 2012-01-15
WO2009132942A1 (fr) 2009-11-05
US20110041353A1 (en) 2011-02-24

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