EP2564666B1 - Ensemble table de cuisson - Google Patents

Ensemble table de cuisson Download PDF

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Publication number
EP2564666B1
EP2564666B1 EP11720183.0A EP11720183A EP2564666B1 EP 2564666 B1 EP2564666 B1 EP 2564666B1 EP 11720183 A EP11720183 A EP 11720183A EP 2564666 B1 EP2564666 B1 EP 2564666B1
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EP
European Patent Office
Prior art keywords
time interval
switching
during
switching unit
cooktop
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
EP11720183.0A
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German (de)
English (en)
Other versions
EP2564666A1 (fr
Inventor
Daniel Anton Falcon
Carlos Bernal Ruiz
José Miguel Burdio Pinilla
Jose Maria De La Cuerda Ortin
Jose-Ramon Garcia Jimenez
Pablo Jesus Hernandez Blasco
Sergio Llorente Gil
Oscar Lucia Gil
Arturo Mediano Heredia
Ignacio Millan Serrano
Fernando Monterde Aznar
Daniel Moros Sanz
Jose Joaquin Paricio Azcona
Diego Puyal Puente
Jose Ignacio Artigas Maestre
Luis Angel Barragan Perez
Claudio Carretero Chamarro
Oscar Jimenez Navascues
Denis Navarro Tabernero
Isidro Urriza Parroque
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority to PL11720183T priority Critical patent/PL2564666T3/pl
Publication of EP2564666A1 publication Critical patent/EP2564666A1/fr
Application granted granted Critical
Publication of EP2564666B1 publication Critical patent/EP2564666B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/04—Sources of current
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like

Definitions

  • a cooktop with an inverter known, by means of which a power supply line can be interrupted and produced, flows through the generated during operation of a current generated by a power line voltage and leads to a switching element.
  • the cooktop has a control device, which controls the inverter in the operating process such that the inverter interrupts the power supply line during a total time interval. Further, in the operation, the control device causes the power supply line to be established immediately before and immediately after the time interval. Furthermore, the control device causes switching of the switching element, which starts and ends during the time interval and which brings the switching element in a specific switching position. The switching element remains in the switching position during a cooking process, wherein current flows through the switching element during the cooking process and the current is used for inductive heating of a cookware.
  • a cooktop with an inverter and with two heating elements is known, which are alternately supplied with power in a single operation of a single inverter.
  • a switching position of an SPDT relay determines which of the two heating elements will be supplied with power.
  • At the inverter is a rectified AC voltage.
  • the rectified AC voltage has a minimum.
  • a “power supply voltage” is to be understood in particular a periodic voltage, with which in a power plant, in particular a nuclear power plant or a coal power plant, generated electricity, after it was conducted by power lines from the power plant to a consumer household, is delivered to the consumer household, said an effective value of the voltage is preferably 230 V, and wherein preferably a frequency of the periodic voltage is 50 Hz or 60 Hz.
  • a "current generated by means of a mains voltage” is to be understood in particular as meaning a current caused by the action of the mains voltage, wherein the current is preferably a rectified single-phase alternating current and particularly preferably has a frequency of 100 Hz or 120 Hz.
  • FIGS first conductive connection of the switching element during the time interval initially exists and a state of the switching element during the time interval changed such that the first conductive connection is completely interrupted at least one time of the time interval and that the second conductive connection of the switching element during the time interval initially completely interrupted is and a state of the switching element is changed during the time interval such that the second conductive connection completely at least one time of the time interval, wherein in particular in the case in which d em making the second conductive connection, two contacts of the switching element collide, the collision is completely completed before one end of the time interval.
  • a high efficiency can be achieved.
  • a cost-effective design can be achieved together with a high heating efficiency.
  • a low cost construction of the switching element and a high life of the switching element combined with a single operation power supply of two different heating elements each contributing to different cooking operations can be achieved by a single inverter.
  • a temporally uniform load of a storm network can be achieved.
  • the cooktop device has at least one voltage supply unit which, during the operating process, applies a time-dependent voltage, which has a minimum point essentially at a middle of the first time interval, to the switching unit.
  • a “middle” of the first time interval is to be understood in particular as meaning a time which has the same time interval from one end to the beginning of the time interval.
  • a “minimum point” of the voltage should in particular be understood as a point in time at which the voltage has a minimum.
  • a “minimum” of the time-dependent voltage is understood in particular to be a voltage value of the voltage at a specific time, which lies within a time interval in which the voltage only assumes values which are greater than or equal to the voltage value, the time being from a start point and an end point of the latter time interval.
  • the voltage "essentially” has a minimum point in the middle of the first time interval, it should be understood in particular that the minimum point is at most 25 percent, preferably at most 10 percent and more preferably at most 2 percent of a total duration of the time interval from the center , In this way, a comfortable usability of the cooktop device can be achieved. In particular, a uniform load on the power grid can be achieved during operation of the hob device.
  • the first time interval is at least two milliseconds.
  • a gentle switching during the first time interval can be reliably achieved.
  • the first time interval is at least four milliseconds in size.
  • a gentle switching can be achieved particularly reliable.
  • deviations a reaction time of the switching element from a control to a start of a switching operation of a target reaction time can be compensated.
  • control device causes the switching unit in the operating process to interrupt the power supply periodically for at least a total period of time, which is substantially the same as the first time interval.
  • a time span which is "substantially" the same as the first time interval should be understood to mean, in particular, a time period whose length deviates from a length of the first time interval by at most forty percent, preferably by at most ten percent and particularly preferably by at most two percent ,
  • a single inverter in an operating operation in which two different heating elements are operated to carry out two different cooking operations, passes electricity to both heating elements.
  • the cooktop device has the first and at least one second switching element, which is connected in series with the first switching element, and the control device switches the second switching element in a second time interval and the control device interrupts the power supply line by means of the switching unit during the entire second time interval and the control device, by means of the switching unit, causes current to flow through the power supply line immediately before and immediately after the second time interval.
  • control device switch the switching unit in a first time period, which immediately precedes the first time interval, with a first set of switching parameters, and the control device switches the switching unit in a second time interval, which immediately follows the first time interval, with a second set of switching parameters, which is different from the first set of switching parameters.
  • the switching unit has at least two inverters, which are provided to influence a current flow through the first switching element. This allows a high degree of flexibility can be achieved.
  • the first switching element is a relay which has at least one coil. This allows a cost-effective design can be achieved.
  • the switching unit has at least one insulated gate bipolar transistor. Thereby, an efficient power control can be achieved.
  • FIG. 1 shows a plan view of a cooking hob with a cooking hob device according to the invention, designed as an induction cooker device, which has a plurality of cooking zones 34.
  • a circuit 36 ( FIG. 2a ) of the cooktop device has four coils formed as heating elements L 1 , L 2 , L 3 , L 4 , which are all simultaneously operated at different power levels. Each of the heating elements L 1 , L 2 , L 3 , L 4 is associated with one of the cooking zones 34, so that when using the cooktop each heating element L 1 exactly one cookware element, ie z. As a pot or pan, heated.
  • the circuit 36 has a switching unit 10, which is formed by a first and a second inverter 28, 30.
  • the first inverter 28 includes a first insulated gate bipolar transistor (hereinafter, the abbreviation "IGBT" is used) 32 and a second IGBT 33.
  • the inverter 30 has a first IGBT 44 and a second IGBT 46.
  • the circuit 36 has a country-specific AC voltage source U, which supplies a mains voltage with an effective value of 230 V and a frequency of 50 Hz.
  • the cooking hob device described is intended in particular for operation in Europe.
  • a corresponding AC power source provides a 60 Hz power line voltage.
  • the voltage of AC power source U first passes through a filter 40 of circuit 36, which eliminates high frequency noise and is essentially a low pass filter.
  • a voltage filtered by the filter 40 is rectified by a rectifier 42 of the circuit 36, which may be designed as a bridge rectifier, so that at a output of the rectifier 42 is a rectified voltage U g ( FIG. FIG.
  • the circuit 36 has two capacitors C 1 , C 2 .
  • a first contact of the capacitors C 1 , C 2 is conductively connected to the collector of the IGBT 32 and conductively connected to a collector of the IGBT 44.
  • a second contact of the capacitors C 1 , C 2 is conductively connected to the emitter of the IGBT 33 and conductively connected to the emitter of the IGBT 46.
  • An emitter of the IGBT 32 is conductively connected to a collector of the IGBT 33.
  • an emitter of the IGBT 44 is conductively connected to a collector of the IGBT 46.
  • the circuit 36 as a relay S 1 'trained switching element S 1 and five other relays S 2 , S 3 , S 4 , S 5 , S 6 on.
  • the relays S 1 ', S 2 , S 3 , S 4 , S 5 , S 6 are SPDT relay and identical.
  • Each of the relays S 1 ', S 2 , S 3 , S 4 , S 5 , S 6 has a first, a second and a third contact and a coil, wherein the first contacts by a corresponding control of the coil optionally with the second or the third contact is conductively connected.
  • the first contact of the relay S 3 is conductively connected to the emitter of the IGBT 32. Further, the second contact of the relay S 3 is connected to the first contact of the relay S 1 '.
  • the third contact of the relay S 3 is conductively connected to the first contact of the relay S 2 .
  • the second contact of the relay S 1 ' is conductively connected to a first contact of the heating element L 1 .
  • the third contact of the relay S 1 ' is conductively connected to a first contact of the heating element L 2 .
  • the second contact of the relay S 2 is conducting with a first contact of the heating element L 3 connected.
  • the third contact of the relay S 2 is conductively connected to a first contact of the heating element L 4 .
  • the first contact of the relay S 6 is conductively connected to the emitter of the IGBT 44. Further, the second contact of the relay S 6 is connected to the first contact of the relay S 4 .
  • the third contact of the relay S 6 is conductively connected to the first contact of the relay S 5 .
  • the second contact of the relay S 4 is conductively connected to a first contact of the heating element L 1 .
  • the third contact of the relay S 4 is conductively connected to a first contact of the heating element L 2 .
  • the second contact of the relay S 5 is conductively connected to a first contact of the heating element L 3 .
  • the third contact of the relay S 5 is conductively connected to a first contact of the heating element L 4 .
  • a second contact of the heating element L 1 is conductively connected to a second contact of the heating element L 2 . Further, a second contact of the heating element L 3 is conductively connected to a second contact of the heating element L 4 .
  • the circuit 36 also has capacitors C 3 , C 4 , C 5 , C 6 .
  • the second contact of the heating element L 1 is conductively connected to a first contact of the capacitor C 3 and to a first contact of the capacitor C 4 .
  • the second contact of the heating element L 3 is conductive to a first contact of the capacitor C5 and connected to a first contact of the capacitor C. 6
  • Second contacts of the capacitors C 3 and C 5 are conductively connected to the collector of the IGBT 32. Further, second contacts of the capacitors C 4 and C 6 are conductively connected to the emitter of the IGBT 46.
  • Both by means of the IGBT 32 and by means of the IGBT 33 is in each case a power supply to the first switching element S 1 , through which in an operating process, a generated by means of the AC voltage source U current flows, producible and interruptible.
  • a control device 14 of the circuit 36 which has two control units 56, 58, controls the switching unit 10 during the operating process, such that during a total time interval t (FIG. FIG. 3 ) for each one of the IGBTs 32, 33, 44, 46 is that a conductive connection between its collector and its emitter is interrupted.
  • the control device 14 is connected to the switching unit 10 and in particular to the gate terminals of the IGBTs 32, 33, 44, 46 (not shown).
  • Immediately before and immediately after the time interval t is at least one of the IGBTs 32, 33 and at least one of the IGBTs 44, 46 in a state in which its collector is conductively connected to its emitter.
  • control device 14 causes, during the entire time interval t only for each of the IGBTs 32, 33, that a conductive connection between its collector and its emitter is interrupted, while the IGBTs 44, 46, for example, in the time interval t can perform switching operations.
  • each of the first contact with the second contact is conductive connected.
  • the relay S 6 the first is conductively connected to the third contact.
  • FIG. 3 schematically a Bewerk Trent a switching operation of the relay S 1 'is illustrated, wherein on an abscissa 52, the time is shown.
  • a switching position 54 of the relay S 1 ' that is, a position of the first contact of the relay S 1 ' is shown in dashed lines.
  • the first relay S 1 ' in a first switching state, in which the first contact of the relay S 1 ' with the second contact of the relay S 1 'forms a conductive connection.
  • the conductive connection is free of current flow.
  • the control device 14 causes, during a time period t 2 , which is completely within the time interval t and which is spaced from end points of the time interval t, starting from the first switching state (FIG. FIG. 2a ) solves the conductive connection, the first contact of the relay S 1 'is finally separated from the second contact of the relay S 1 ' and subsequently impinges on the third contact and after the impact of the first and the third contact of the relay S 1 'a form a conductive connection, this conductive connection existing before one end of the time interval t ( FIG. 2b ) and during the time interval t is free from a current flow.
  • the control device 14 applies a voltage U s to the coil of the relay S 1 'at a time which has a time interval t 1 from a middle of the time interval t 2 , which characterizes a reaction time of the relay S 1 ' Switching the relay S 1 'caused in the period t 2 .
  • a total duration of the time interval t is the sum of the time period t 2 and twice the amount of the deviation time. Because the conductive connections of the relay S 1 'during the time interval t are de-energized, the switching operation of the relay S 1 ', which takes place during the time interval t, particularly gentle for the relay S 1 'and allows a long life of the relay S 1 ' , In principle, it is conceivable that during the time interval t apart from the relay S 1 'another of the relay S 2, S 3, S 4, S 5, S 6 performs a switching operation, which begins during the time interval t and ends.
  • the mains voltage has a frequency of 50 Hz.
  • the time interval t is less than half the period of the mains voltage and has a length of eight milliseconds.
  • the AC voltage source U, the filter 40 and the rectifier 42 form a voltage supply unit 18, which applies the voltage U g to the switching unit 10 during the operating process.
  • the voltage U g has a minimum point in a middle of the time interval t. Furthermore, a voltage delivered by the AC voltage source U has a zero crossing in the middle of the time interval t.
  • the capacitors C 1 and C 2 and the inactivity of the inverters 28, 30 ensure that the voltage U g is constant.
  • the control device 14 causes the switching unit 10 during the operation to interrupt periodically for periods of time t 3 , which are as long as the time interval t, all power supply lines which can be produced and interrupted by the switching unit 10.
  • a period T Mux of the periodic interruption is less than one second ( FIG. 4 ).
  • the period T Mux begins with one of the time periods t 3 , which is followed immediately by a first time period T S1 .
  • a switching operation of the switching element S 1 starts and ends, which switches the switching element S 1 from a state in which the first and third contacts of the switching element S 1 are conductively connected to a state in which the first and the second contact of the switching element S 1 are conductively connected, transferred.
  • the controller 14 causes each of the IGBTs 32, 33 to switch at a first frequency during the time period T S1 .
  • the time period T S1 is followed by one of the time periods t 3 , which is identical to the time interval t, immediately on.
  • the time interval t is followed immediately by a time interval T S2 .
  • the controller 14 causes each of the IGBTs 32, 33 to switch at a second frequency different from the first frequency during the time period T S2 .
  • a power is delivered to the heating element L 1 by means of the first inverter 28 (FIG. FIG. 2a ), which corresponds approximately to the power which during the second time period T S2 by means of the inverter 30 to the heating element L 2 ( FIG.
  • the inverter 30 supplies the heating element L 3 with power during the periods T S1 , T S2 .
  • the voltage U g is in periods that are free of all time intervals t 3 , periodically with a period that is half as large as the period of the power grid voltage.
  • the relay S 3 is a switching element S 3 ', which is connected in series with the switching element S 1 .
  • the control device 14 switches the relay S 3 in a second time interval which differs from the operating procedure in a second time interval which is seven milliseconds long ( FIG. 5 ).
  • the switching of the relay S 3 starts and ends in the second time interval.
  • the control device 14 causes each of the IGBTs 32, 33, 44, 46 to be in a blocking state during the entire second time interval, that is to say free from a conductive connection between its collector and its emitter.
  • at least one of the IGBTs 32, 33 and at least one of the IGBTs 44, 46 switches.
  • all the IGBTs 32, 33, 44, 46 are periodically switched by the control device 14.
  • the circuit 36 has further relays and further heating elements, which are connected by means of the further relay to the inverters 28, 30.
  • the relays S 1 ', S 2 , S 3 , S 4 , S 5 , S 6 which are designed as SPDT relays, are each replaced by two SPST relays.
  • switching unit C 6 capacitor 14 control device S 1 switching element 18 Power supply unit S 1 ' relay 28 inverter S 2 relay 30 inverter S 3 relay 32 Bipolar transistor with insulated gate electrode S 3 ' switching element S 4 relay 33 IGBT S 5 relay 34 cooking zone S 6 relay 36 circuit L 1 heating element 40 filter L 2 heating element 42 rectifier L 3 heating element 44 IGBT L 4 heating element 46 IGBT t time interval 52 abscissa t 1 distance 54 switch position t 2 Period of time 56 control unit t 3 Period of time 58 control unit T S1 period U AC voltage source T S2 period T Mux period U g tension U S tension C 1 capacitor C 2 capacitor C 3 capacitor C 4 capacitor C 5 capacitor

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)
  • Inverter Devices (AREA)

Claims (11)

  1. Ensemble table de cuisson, en particulier un ensemble table de cuisson à induction, avec au moins une unité de commutation (10) au moyen de laquelle au moins une alimentation électrique peut être interrompue et établie, à travers laquelle un courant généré au moyen d'une tension de réseau électrique s'écoule pour au moins une opération de fonctionnement et qui mène à un premier élément de commutation (S1), et avec au moins un dispositif de commande (14) qui commande l'unité de commutation (10) de telle sorte lors de l'opération de fonctionnement que l'unité de commutation (10) interrompt l'alimentation électrique durant au moins un premier intervalle de temps complet (t), et qui, lors de l'opération de fonctionnement, ordonne l'établissement de l'alimentation électrique immédiatement avant et immédiatement après le premier intervalle de temps (t), et qui ordonne une commutation du premier élément de commutation (S1), laquelle débute et se termine durant le premier intervalle de temps (t), le premier intervalle de temps (t) étant inférieur à une demie période de la tension de réseau électrique, caractérisé par au moins une unité d'alimentation en tension (18), laquelle établit lors de l'opération de fonctionnement au niveau de l'unité de commutation (10) une tension dépendante du temps, qui présente essentiellement en un milieu du premier intervalle de temps (t) un point minimal.
  2. Ensemble table de cuisson selon la revendication 1, caractérisé en ce que le premier intervalle de temps (t) est d'au moins deux millisecondes.
  3. Ensemble table de cuisson selon la revendication 2, caractérisé en ce que le premier intervalle de temps (t) est d'au moins quatre millisecondes.
  4. Ensemble table de cuisson selon l'une des revendications précédentes, caractérisé en ce que lors de l'opération de fonctionnement, le dispositif de commande (14) fait en sorte que l'unité de commutation (10) interrompe périodiquement l'alimentation électrique pour au moins une période de temps complète (t3) essentiellement aussi longue que le premier intervalle de temps (t).
  5. Ensemble table de cuisson selon la revendication 4, caractérisé en ce qu'une période (TMUX) de la commande périodique est inférieure à une seconde.
  6. Ensemble table de cuisson selon l'une des revendications précédentes, caractérisé par le premier et au moins un deuxième élément de commutation (S1, S3'), branché en série avec le premier élément de commutation (S1), et le dispositif de commande (14) commute le deuxième élément de commutation (S3') dans un deuxième intervalle de temps et le dispositif de commande (14) interrompt durant l'ensemble du deuxième intervalle de temps l'alimentation électrique au moyen de l'unité de commutation (10) et le dispositif de commande (14) fait en sorte, au moyen de l'unité de commutation (10), que de l'électricité traverse l'alimentation électrique immédiatement avant et immédiatement après le deuxième intervalle de temps.
  7. Ensemble table de cuisson selon l'une des revendications précédentes, caractérisé en ce que le dispositif de commande (14) commute l'unité de commutation (10) dans une première période (TS1), qui précède immédiatement le premier intervalle de temps (t), avec un premier ensemble de paramètres de commutation et le dispositif de commande (14) commute l'unité de commutation (10) dans une deuxième période (TS2), qui suit immédiatement le premier intervalle de temps (t), avec un deuxième ensemble de paramètres de commutation, lequel se différencie du premier ensemble de paramètres de commutation.
  8. Ensemble table de cuisson selon l'une des revendications précédentes, caractérisé en ce que l'unité de commutation (10) présente au moins deux onduleurs (28, 30), lesquels sont prévus afin d'influencer une conduction électrique à travers le premier élément de commutation (S1).
  9. Ensemble table de cuisson selon l'une des revendications précédentes, caractérisé en ce que le premier élément de commutation (S1) est un relais (S1') présentant au moins une bobine.
  10. Ensemble table de cuisson selon l'une des revendications précédentes, caractérisé en ce que l'unité de commutation (10) présente au moins un transistor bipolaire à jonctions avec grille isolée (32).
  11. Table de cuisson avec un ensemble table de cuisson selon l'une des revendications précédentes.
EP11720183.0A 2010-04-27 2011-04-01 Ensemble table de cuisson Active EP2564666B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11720183T PL2564666T3 (pl) 2010-04-27 2011-04-01 Urządzenie płyty grzejnej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201030607A ES2385091B1 (es) 2010-04-27 2010-04-27 Dispositivo de encimera de cocción.
PCT/IB2011/051396 WO2011135470A1 (fr) 2010-04-27 2011-04-01 Ensemble table de cuisson

Publications (2)

Publication Number Publication Date
EP2564666A1 EP2564666A1 (fr) 2013-03-06
EP2564666B1 true EP2564666B1 (fr) 2017-06-14

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EP11720183.0A Active EP2564666B1 (fr) 2010-04-27 2011-04-01 Ensemble table de cuisson

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US (1) US10136478B2 (fr)
EP (1) EP2564666B1 (fr)
CN (1) CN102860124B (fr)
ES (2) ES2385091B1 (fr)
PL (1) PL2564666T3 (fr)
WO (1) WO2011135470A1 (fr)

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TW200702968A (en) * 2005-07-12 2007-01-16 Holtek Semiconductor Inc Architecture and method of power-controlling circuit applicable to electronic cooker
WO2007088931A1 (fr) * 2006-02-02 2007-08-09 Matsushita Electric Industrial Co., Ltd. Appareil de chauffage par induction
ES2325108B1 (es) * 2006-09-13 2010-06-01 Bsh Electrodomesticos España, S.A. Dispositivo de cocina.
CN101500350B (zh) * 2008-01-30 2011-07-06 义隆电子股份有限公司 电磁炉控制电路及使用其的电磁炉
ES2729186T3 (es) * 2008-09-01 2019-10-30 Mitsubishi Electric Corp Circuito convertidor y aparato de control de accionamiento de motor, acondicionador de aire, refrigerador y cocina de calentamiento por inducción dotados con el circuito

Also Published As

Publication number Publication date
US10136478B2 (en) 2018-11-20
ES2634946T3 (es) 2017-09-29
PL2564666T3 (pl) 2017-10-31
EP2564666A1 (fr) 2013-03-06
ES2385091B1 (es) 2013-05-28
ES2385091A1 (es) 2012-07-18
WO2011135470A1 (fr) 2011-11-03
US20130043239A1 (en) 2013-02-21
CN102860124A (zh) 2013-01-02
CN102860124B (zh) 2015-12-16

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