CN101785170A - Cooled casing type electric motor, and its stator - Google Patents
Cooled casing type electric motor, and its stator Download PDFInfo
- Publication number
- CN101785170A CN101785170A CN200880103927A CN200880103927A CN101785170A CN 101785170 A CN101785170 A CN 101785170A CN 200880103927 A CN200880103927 A CN 200880103927A CN 200880103927 A CN200880103927 A CN 200880103927A CN 101785170 A CN101785170 A CN 101785170A
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- China
- Prior art keywords
- stator
- stator frame
- stator core
- frame
- electric motor
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
Abstract
Provided is a cooled casing type electric motor, which is cooled by dipping the casing of a stator frame (2) in a coolant. A thermally conductive member layer (15) is formed in a clearance (13) between the back of a stator iron core (1), which is obtained by bringing an electromagnetic steel plate (11) into contact with the inner wall face of the stator frame (2) to fix the plate in the laminated state, and the inner wall face of the stator frame (2). The thermally conductive member layer (15) is made mainly of a graphite sheet, and may be mounted on either the back of the stator iron core (1) or the inner wall face of the stator frame (2). The clearance (13), which might otherwise exist between the back of the stator iron core (1) and the inner wall face of the stator frame (2) so that it would obstruct the radiation of the heat generated in the operation by the stator iron core (1) and transferred to the stator frame (2), thereby to drop the cooling performance of a stator winding (3), can be eliminated to provide the cooled casing type electric motor having an excellent cooling performance.
Description
Technical field
The present invention relates to cooled casing type electric motor and stator thereof that refrigerant environment that ventilation type electric rotating machine (gas-cooled typerotating electric machine) that valve formula hydraulic generator (valve type water turbine generator), submarine use down with motor or refrigerating gas environment under water waits moves down.
Background technology
As the typical example of cooled casing type electric motor (externally cooled electric rotating machine), lifting valve formula hydroturbine generator here is that example describes (with reference to patent documentation 1 and patent documentation 2) with reference to Fig. 7, Fig. 8.Valve formula hydroturbine generator is to be applicable to low head, the big flow hydroelectric installation of water turbine power station, be embedded in the water channel, utilize current to make not shown rotary wheel of water turbine (water turbine runner) rotation, send its rotating energy to directly be connected on the above-mentioned rotary wheel of water turbine generator and generate electricity.
Fig. 7 is the longitudinal section of general valve formula hydraulic generator major part, and Fig. 8 amplifies longitudinal section for the stator frame 2 of amplifying the A part in the presentation graphs 7 and the part of stator core 1.As shown in Figure 7, valve formula hydraulic generator installs to generating set the inside of the valve (valve) of top cover 12 formations of using double as stator frame 2 in the water channel 10.In the downstream of water channel 10 side, there is not the rotary wheel of water turbine of expression to be installed on the armature spindle 8 of generator among the above-mentioned figure.And the stator 4 that stator coil 3 has been installed on the stator core 1 closely is fixed on the inwall of stator frame 2, and side is provided with magnet exciting coil 7b is twined the rotor 7 that is installed on the magnetic pole 7a of armature spindle 8 rotations within it.
During this valve formula hydraulic generator operation, the stator 4 that stator coil 3 is installed is cooled off by the refrigerating gas 6 from aerial cooler 9 respectively with armature spindle 8 heating separately that is wound with magnet exciting coil 7b.And the cooling of stator 4 has aerial cooler mode and appearance water cooling mode.The aerial cooler mode is to make the pipeline that is arranged on radial direction on the stator core 1 from cooling air 6 processes of above-mentioned aerial cooler 9, by being arranged on the ventilation that does not have expression among the figure between stator core 1 and the stator frame 2 mode of pipeline to above-mentioned aerial cooler 9 circulations.In addition, the appearance water cooling mode is for being provided with aerial cooler 9, and stator core 1 directly is close to the mode that the inner wall part with the stator frame 2 of 5 coolings of the cooling water in the water channel 10 cools off that is fixed on.Stator core 1 directly is close in the cooling structure of stator frame 2 inner wall parts of appearance water cooling mode, use pipeline because not being provided with ventilates between said stator iron core 1 and stator frame 2, therefore have size that can reduce the generator radial direction and the feature that reduces the load capacity of aerial cooler 9.
Patent documentation 1: Japanese kokai publication hei 8-149756 communique
Patent documentation 2: Japanese kokai publication hei 6-14482 communique
In the above-mentioned appearance type of cooling---be about to stator core 1 and be close in the structure of cooling off on the stator frame 2, in order to pass to stator frame 2 well by the heat that stator 4 produces, the preferred employing makes stator core 1 and stator frame 2 thermo-contact well---promptly eliminate the clearance portion (air layer) of the contact portion of the back side of stator core 1 and stator frame 2 walls, the structure of being close to equably.Therefore, stator 4 adopts stator coil 3 in the generator operation process because heating and to radially direction thermal expansion, makes the inner wall part of stator core 1 and stator frame 2 keep predetermined surface pressing and contacting structure thus.
But, as shown in Figure 8, between the peripheral part of the inner wall part of stator frame 2 and stator core 1, because the end that the jog of the machined surface of stator frame 2 inner wall parts and the stacked electromagnetic steel plate (electromagnetic steel plate) that constitutes stator core 1 produced in 11 o'clock is not concordant, generation clearance portion 13 between the internal face of the back side of stator core 1 and stator frame 2.At the inner wall part of stator frame 2 and the boundary portion place at stator core 1 back side, this clearance portion 13 is about 0.2～0.3mm generally speaking, has become the inner wall part and the stator core 1 part contacting structure of stator frame 2.
Because clearance portion 13 be gas blanket, thermal conductivity ratio stator core 1 is little a lot, thus 13 one-tenth of this clearance portion thermal resistance, hinder heat that stator 4 produced to stator frame 2 heat radiations, existence makes the low problem of cooling performance of stator coil 3.
Summary of the invention
The present invention is exactly for corresponding the problems referred to above, its objective is the cooling performance that will improve the cooled casing type electric motor stator.
In order to address the above problem, a kind of form of cooled casing type electric motor stator involved in the present invention is impregnated into the cooled casing type electric motor stator of cooling stator core in the refrigerant for the shell with stator frame, this stator core is to make the internal face of electromagnetic steel plate and said stator frame stacked in contact fixing and obtain, and it is characterized in that: the layer that forms mainly the thermal conductive member that is made of graphite flake on the face of at least one in the outer peripheral face of the internal face of said stator frame or said stator iron core.
And, the another kind of form of cooled casing type electric motor stator involved in the present invention is impregnated into the cooled casing type electric motor stator of cooling stator core in the refrigerant for the shell with stator frame, this stator core is to make the internal face of electromagnetic steel plate and said stator frame stacked in contact fixing and obtain, and it is characterized in that: sandwich the main thermal conductive member that is made of graphite flake in the formed clearance portion of outer peripheral face by the internal face of said stator frame and said stator iron core.
And cooled casing type electric motor involved in the present invention is any one cooled casing type electric motor that possesses in the said stator.
The effect of invention: if adopt the present invention, the clearance portion between stator core and the stator frame is replaced by the thermal conductive member that mainly is made of graphite flake.Because graphite flake pyroconductivity height, and have flexibility and elasticity, therefore stator core always is close to stator frame between the two and is contacted, thereby can keep thermo-contact between them.Thus, can promote heat, can improve the cooling performance of cooled casing type electric motor stator from the conduction of stator core to stator frame.
Description of drawings
The sectional elevation of the formation situation part of the thermal conductive member that forms on the stator frame internal face of Fig. 1 for amplification expression the present invention the 1st example;
Fig. 2 is the sectional elevation of the part of the stator core that amplifies expression the present invention the 1st example and stator frame assembled condition;
Fig. 3 is the longitudinal section of the part of the stator core back side of amplifying expression the present invention the 1st example and stator frame assembled condition;
Fig. 4 is the perspective view of stator core assembled condition in expression the present invention the 1st example;
Fig. 5 is the perspective view of stator core assembled condition in expression the present invention the 2nd example;
Fig. 6 is the sectional elevation of the part of the stator core back side of amplifying expression the present invention the 3rd example and stator frame assembled condition;
Fig. 7 is the longitudinal section of the valve formula hydraulic generator of prior art;
Fig. 8 is that longitudinal section is amplified in stator frame and the part between the stator core of Fig. 7.
Description of reference numerals: 1. stator core; 2. stator frame; 3. stator coil; 4. stator; 5. cooling water; 6. refrigerating gas; 7. rotor; 7a. magnetic pole; 7b. magnet exciting coil; 8. armature spindle; 9. aerial cooler; 10. water channel; 11. electromagnetic steel plate; 12. top cover; 13. clearance portion; 14. dovetail key; 15,16. thermal conductive member layers; 17. thermal conductive member; 19. dovetail groove (dovetail); 20. slit
Embodiment
The representative example of cooled casing type electric motor involved in the present invention is described below with reference to Fig. 1 to Fig. 6.
In addition, add identical Reference numeral for identical with the above-mentioned background technology or similar structure division in this example, and omit its explanation, mainly assemble method and the structure with regard to stator core and stator frame describes.
(the 1st example)
The 1st example of cooled casing type electric motor involved in the present invention is described below with reference to Fig. 1 to Fig. 4.
Fig. 1 is the sectional elevation of a part that the stator frame before the stator core is installed in the related cooled casing type electric motor of expression the 1st example, and Fig. 2 is installed to stator core for expression the partial cross sectional view of the structure on the stator frame of Fig. 1.And Fig. 3 is the longitudinal section of the major part of the basic structure around the related cooled casing type electric motor stator of expression the 1st example.The perspective view that Fig. 4 represents for the stator core that only takes out valve formula hydraulic generator.
As described below stator core 1 is assembled into the inboard of stator frame 2 in the 1st example.
At first, with the internal face of the outside stator frame 2 in opposite directions at stator core 1 back side (lateral surface) on form thermal conductive member layer 15.In this example, thermal conductive member layer 15 forms by paste graphite flake on the internal face of stator frame 2.The stator core 1 of valve formula hydraulic generator is made of multi-disc (among the figure being 7) as shown in Figure 4 fan-shaped silicon steel plate electromagnetic steel plate 11 surround annulus tabular, form along the so tabular electromagnetic steel plate of annulus of the stacked multi-disc of axis direction.
Graphite flake with resin graphitizations such as polyimides, regular is arranged in planar and tablet moulding it for for example.
Be provided with the dovetail groove 19 that the dovetail key 14 that forms on the medial surface of stator frame 2 can embed at the outside diameter of electromagnetic steel plate 11, be provided with the slit 20 of a plurality of housing stator coils at internal side diameter.
If adopt the 1st example, stacked electromagnetic steel plate 11 and utilize thermal conductive member layer 15 distortion that form on stator frame 2 internal faces to fill and lead up at the male and fomale(M﹠F) that produces on the outer surface when forming stator core 1.Therefore, compared with prior art, clearance portion 13 during operation between the internal face of the outer peripheral face of stator core 1 and stator frame 2 is filled up by thermal conductive member layer 15, the gas blanket that pyroconductivity is little is replaced by the big thermal conductive member layer 15 of pyroconductivity, therefore can promote heat from the conduction of stator core 1 to stator frame 2.
So, because the little refrigerating gas layer of pyroconductivity that is present in the clearance portion 13 between stator core 1 back side and stator frame 2 internal faces is replaced by thermal conductive member layer 15, therefore the back side of stator core 1 and the thermal resistance between the stator frame 2 diminish, promoted heat from the transmission of stator core 1, so can improve the cooling performance of stator to stator frame 2.
Especially owing to use graphite flake as thermal conductive member layer 15, therefore have following effect: the graphite flake pyroconductivity is high, generally has the heat conductivities of high thermoconductivity metal more than 2 times such as copper or aluminium.So thermal conduction characteristic excellence.
And owing to the graphite flake softness, have flexibility and elasticity, therefore can adapt to the gap shape between stator core 1 back side and stator frame 2 internal faces and be out of shape, can fill and lead up this gap.And, though cooled casing type electric motor is along with the variation of operational modes such as starting, stop, the thermal expansion of the each several part that the each several part temperature change causes changes the back side of stator core 1 and the gap shape between stator frame 2 internal faces, but the variation of following this gap shape owing to graphite flake changes, and therefore can keep thermo-contact well.
And, graphite flake have weight be aluminium about 1/3, soft, bending machining such advantage easily.And,, can relax the inhomogeneous of temperature on circumferencial direction and the axis direction because therefore graphite flake disposes graphite flake by the annular section between stator core 1 and stator frame 2 to thickness direction about 10 times of the heat conductivity height of face direction.
(the 2nd example)
Use Fig. 5 that the stator of the cooled casing type electric motor of the present invention's the 2nd example is described below.Fig. 5 is the perspective view of the stator core 1 representing electromagnetic steel plate 11 stacked and form.With the back side of the internal face stator core 1 in opposite directions of stator frame 2 on, be formed with thermal conductive member layer 16.In this example, thermal conductive member layer 16 forms by paste graphite flake on the back side of stator core 1.After the back side of stator core 1 forms thermal conductive member layer 16, stator core 1 is assembled on the internal face of stator frame 2 like this in this example, then stator coil 3 is installed in the slit 20 and formation stator 4.
If adopt the 2nd example, because the back side of stator core 1 is stepped construction, therefore generation is concavo-convex on the outer surface of stator core 1, but should be filled and led up by thermal conductive member layer 16 by the concavo-convex of surface.Therefore, compared with prior art, the little gas blanket of pyroconductivity that produces in the clearance portion 13 during operation between the internal face of the back side of stator core 1 and stator frame 2 is replaced by thermal conductive member layer 16.
Thus, owing to there is not the little gas blanket of pyroconductivity in the clearance portion 13 between the internal face of the back side that is clipped in stator core 1 and stator frame 2, therefore the thermal resistance between the internal face of the back side of stator core 1 and stator frame 2 diminishes, and can improve the cooling performance of stator.
Use graphite flake identical with the 1st example as the peculiar effect that thermal conductive member layer 16 can obtain.
(the 3rd example)
The stator of the cooled casing type electric motor of the present invention's the 3rd example is described below with reference to Fig. 6.Fig. 6 is the partial cross sectional view of stator frame 2 in expression the 3rd example with the assembled condition of stator core 1.As shown in Figure 6, between the internal face of the back side of stator core 1 and stator frame 2, be provided with the certain clearance portion 13 that allows thermal expansion in service.Insert the intensity that has to a certain degree, thermal conductive member 17 in the clearance portion 13 in this example between the internal face of the back side of stator core 1 and stator frame 2 with flexibility.The graphite flake that uses flexibility, flexibility and good springiness is as thermal conductive member 17.Because stator core 1 heating of when operation is expanded, even therefore also how much exist the structure of some clearance portion, crack portion elimination running time just passable as long as insert when adopting assembling between the back side of stator frame 2 and stator core 1 after the thermal conductive member 17.Thus, because thermal conductive member 17 needn't clip insertion very close to each otherly, therefore insert operation and can carry out with comparalive ease.
If adopt the 3rd example because stator core 1 be stepped construction, so its outer surface exist concavo-convex, but thermal conductive member 17 these surperficial shapes of correspondence and being out of shape.Therefore, compared with prior art, there is the little gas blanket of pyroconductivity in the clearance portion 13 during operation between the internal face of the back side of stator core 1 and stator frame 2 hardly.
Thus, because the gas blanket that the pyroconductivity that clips in the clearance portion between the back side of stator core 1 and the internal face of stator frame 2 is little is replaced by the high thermal conductive member 17 of pyroconductivity, therefore the back side of stator core 1 and the thermal resistance between the stator frame 2 diminish, and can improve the cooling performance of stator.
In addition, use graphite flake identical with the 1st example as the peculiar effect that thermal conductive member 17 can obtain.
Claims (3)
1. the stator of a cooled casing type electric motor, the shell of stator frame is impregnated into cools off stator core in the refrigerant, this stator core is to make the internal face of electromagnetic steel plate and said stator frame stacked in contact fixing and obtain, and it is characterized in that: the layer that forms the thermal conductive member that is made of graphite flake on the face of at least one in the outer peripheral face of the internal face of said stator frame or said stator iron core.
2. the stator of a cooled casing type electric motor, the shell of stator frame is impregnated into cools off stator core in the refrigerant, this stator core is to make the internal face of electromagnetic steel plate and said stator frame stacked in contact fixing and obtain, and it is characterized in that: sandwich the thermal conductive member that is made of graphite flake in the formed clearance portion of outer peripheral face by the internal face of said stator frame and said stator iron core.
3. a cooled casing type electric motor possesses aforesaid right requirement 1 or 2 described stators.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-217338 | 2007-08-23 | ||
| JP2007217338 | 2007-08-23 | ||
| PCT/JP2008/002288 WO2009025093A1 (en) | 2007-08-23 | 2008-08-25 | Cooled casing type electric motor, and its stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101785170A true CN101785170A (en) | 2010-07-21 |
Family
ID=40378002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880103927A Pending CN101785170A (en) | 2007-08-23 | 2008-08-25 | Cooled casing type electric motor, and its stator |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2009025093A1 (en) |
| CN (1) | CN101785170A (en) |
| BR (1) | BRPI0815570A2 (en) |
| WO (1) | WO2009025093A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386694A (en) * | 2010-08-30 | 2012-03-21 | 通用电气公司 | Segmented stator assembly |
| CN102545406A (en) * | 2012-03-01 | 2012-07-04 | 多摩川精密电机（苏州）有限公司 | Rotary motor and heat transmission structure thereof |
| CN102569220A (en) * | 2010-12-28 | 2012-07-11 | 常州碳元科技发展有限公司 | Folding high-heat-radiation body |
| CN104471836A (en) * | 2012-07-11 | 2015-03-25 | 瑞美技术有限责任公司 | Segmented electric machine core secured with belt and method of manufacture |
| WO2015096284A1 (en) * | 2013-12-27 | 2015-07-02 | 中山大洋电机制造有限公司 | Stator assembly of electric motor and electric motor employing same |
| CN105490403A (en) * | 2015-12-21 | 2016-04-13 | 陈艳 | Generator stator |
| CN107769471A (en) * | 2017-10-16 | 2018-03-06 | 常州朗奇威电器有限公司 | A kind of stator core construction for motor |
| US10193421B2 (en) | 2015-11-13 | 2019-01-29 | General Electric Company | System for thermal management in electrical machines |
| CN109301973A (en) * | 2017-07-24 | 2019-02-01 | 西门子公司 | Motor and marine propulsion |
| CN110612657A (en) * | 2017-11-20 | 2019-12-24 | 三菱重工发动机和增压器株式会社 | Electric machine and method for producing same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011120350A (en) * | 2009-12-02 | 2011-06-16 | Fuji Electric Systems Co Ltd | Stator of rotary electric machine |
| CN101958590A (en) * | 2010-08-12 | 2011-01-26 | 上海中科深江电动车辆有限公司 | Stator iron core heat dissipation structure for permanent magnet motor of electromobile |
| JP5889157B2 (en) * | 2012-10-04 | 2016-03-22 | 三菱電機株式会社 | Rotating electric machine |
| US10014751B2 (en) | 2015-05-19 | 2018-07-03 | General Electric Company | Electrical machine cooling structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043045A (en) * | 1988-11-01 | 1990-06-13 | 西屋电气公司 | Generator core support system with and stacking fixture |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08149756A (en) * | 1994-11-15 | 1996-06-07 | Fuji Electric Co Ltd | Stator for electric rotating machine having water-cooled housing |
| JP4380226B2 (en) * | 2003-06-06 | 2009-12-09 | パナソニック株式会社 | Thermally conductive sheet and heat dissipation structure using the same |
| JP2006332305A (en) * | 2005-05-26 | 2006-12-07 | Matsushita Electric Ind Co Ltd | Method of manufacturing thermal conductive sheet |
-
2008
- 2008-08-25 BR BRPI0815570-4A2A patent/BRPI0815570A2/en not_active IP Right Cessation
- 2008-08-25 CN CN200880103927A patent/CN101785170A/en active Pending
- 2008-08-25 JP JP2009528960A patent/JPWO2009025093A1/en active Pending
- 2008-08-25 WO PCT/JP2008/002288 patent/WO2009025093A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043045A (en) * | 1988-11-01 | 1990-06-13 | 西屋电气公司 | Generator core support system with and stacking fixture |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386694B (en) * | 2010-08-30 | 2016-04-06 | 通用电气公司 | Segmented stator assemblies |
| CN102386694A (en) * | 2010-08-30 | 2012-03-21 | 通用电气公司 | Segmented stator assembly |
| CN102569220A (en) * | 2010-12-28 | 2012-07-11 | 常州碳元科技发展有限公司 | Folding high-heat-radiation body |
| CN102545406A (en) * | 2012-03-01 | 2012-07-04 | 多摩川精密电机（苏州）有限公司 | Rotary motor and heat transmission structure thereof |
| CN104471836A (en) * | 2012-07-11 | 2015-03-25 | 瑞美技术有限责任公司 | Segmented electric machine core secured with belt and method of manufacture |
| WO2015096284A1 (en) * | 2013-12-27 | 2015-07-02 | 中山大洋电机制造有限公司 | Stator assembly of electric motor and electric motor employing same |
| US10193421B2 (en) | 2015-11-13 | 2019-01-29 | General Electric Company | System for thermal management in electrical machines |
| CN105490403A (en) * | 2015-12-21 | 2016-04-13 | 陈艳 | Generator stator |
| CN109301973A (en) * | 2017-07-24 | 2019-02-01 | 西门子公司 | Motor and marine propulsion |
| CN109301973B (en) * | 2017-07-24 | 2021-07-30 | 西门子公司 | Motor and ship propulsion device |
| CN107769471A (en) * | 2017-10-16 | 2018-03-06 | 常州朗奇威电器有限公司 | A kind of stator core construction for motor |
| CN110612657A (en) * | 2017-11-20 | 2019-12-24 | 三菱重工发动机和增压器株式会社 | Electric machine and method for producing same |
| US11509190B2 (en) | 2017-11-20 | 2022-11-22 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Motor and method of producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009025093A1 (en) | 2009-02-26 |
| BRPI0815570A2 (en) | 2015-02-18 |
| JPWO2009025093A1 (en) | 2010-11-18 |
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Application publication date: 20100721 |