WO2008075716A1 - タービン翼 - Google Patents
タービン翼 Download PDFInfo
- Publication number
- WO2008075716A1 WO2008075716A1 PCT/JP2007/074414 JP2007074414W WO2008075716A1 WO 2008075716 A1 WO2008075716 A1 WO 2008075716A1 JP 2007074414 W JP2007074414 W JP 2007074414W WO 2008075716 A1 WO2008075716 A1 WO 2008075716A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- turbine blade
- temperature atmosphere
- exposed
- convex
- low
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
- F01D5/145—Means for influencing boundary layers or secondary circulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D7/00—Rotors with blades adjustable in operation; Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/324—Blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/502—Thermal properties
- F05D2300/5021—Expansivity
- F05D2300/50212—Expansivity dissimilar
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/505—Shape memory behaviour
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/914—Device to control boundary layer
Definitions
- the present invention relates to a turbine blade that is exposed to a relatively high temperature high temperature atmosphere and a relatively low temperature low temperature atmosphere, and relates to a turbine blade used in, for example, a gas turbine.
- a turbine blade used in a gas turbine or the like has a concave curved pressure surface that is concave along the fluid flowing direction and a convex curved negative surface that is convex along the fluid flowing direction. And a pressure surface.
- a phenomenon in which a boundary layer of fluid formed on the suction surface peels, that is, so-called laminar flow separation occurs.
- Laminar flow separation results in noise and reduced turbine efficiency.
- a technique has been proposed in which a turbulent flow is positively formed by providing protrusions on the suction surface as in Patent Document 1 and the occurrence of laminar flow separation is suppressed by this turbulent flow.
- Patent Document 1 Japanese Utility Model Publication No. 7-35702
- a turbine blade is used.
- 1S Aircraft will be exposed to different temperature environments during cruise and takeoff and landing.
- the combustion energy of a combustor provided in front of the turbine is low, that is, because the engine output is small, the turbine blades are exposed to a relatively low temperature environment (low temperature atmosphere).
- the combustion energy of the combustor is high, that is, the engine output is large, so that the turbine blades are exposed to a relatively high temperature environment (high temperature atmosphere).
- the present invention has been made in view of the above-described problems, and reduces the pressure loss of the turbine blade at a low layarez number in a low-temperature atmosphere without increasing the pressure loss of the turbine blade at a high layarez number in a high-temperature atmosphere.
- the purpose is to let you.
- the present invention provides a turbine blade that is exposed to a relatively high temperature high temperature atmosphere and a relatively low temperature low temperature atmosphere, and is recessed along the fluid flow direction.
- the present invention provides a turbine blade provided with an unevenness forming means that makes a suction surface a smooth surface along a convex curved surface when exposed to a high temperature atmosphere.
- the unevenness forming means when the unevenness forming means is exposed to a low temperature atmosphere, an uneven portion along the flow of the fluid appears on the negative pressure surface, and when exposed to the high temperature atmosphere, the negative pressure surface follows the convex surface. A smooth surface. That is, when exposed to a low temperature atmosphere, an uneven portion that suppresses laminar flow separation is formed on the negative pressure surface, and when exposed to a high temperature atmosphere, the uneven portion disappears from the negative pressure surface.
- the unevenness forming means includes a metal material group made of a plurality of metal materials having different thermal expansion coefficients arranged in the fluid flow direction. Monkey.
- the metal material group is formed by alternately arranging a plurality of metal materials having a relatively small coefficient of thermal expansion and metal materials having a relatively large coefficient of thermal expansion in the flow direction.
- V U configuration can be adopted.
- the turbine blade at a high leikarez number in a high temperature atmosphere It is possible to reduce the pressure loss of the turbine blades at a low Reikales number in a low-temperature atmosphere without increasing the pressure loss of the turbine.
- FIG. 1 is a perspective view of a wing that is a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the main part including the vicinity of the concavo-convex forming portion provided in the blade according to the first embodiment of the present invention, and shows the case where the blade is exposed to a low-temperature atmosphere.
- FIG. 3 is a cross-sectional view of the main part including the vicinity of the concavo-convex forming portion provided in the blade according to the first embodiment of the present invention, and shows the case where the blade is exposed to a high-temperature atmosphere.
- FIG. 4 is a perspective view of a wing that is a second embodiment of the present invention.
- FIG. 1 is a perspective view of a turbine blade 10 according to a first embodiment of the present invention. Shown in this figure Thus, the turbine blade 10 has a leading edge 11 on the side where the fluid F flows, a concave curved pressure surface 12 which is recessed along the direction in which the fluid F flows, and a convex shape along the direction in which the fluid F flows. It is configured to be surrounded by a convex-curved negative pressure surface 13 and a rear edge 14 on the side where the fluid F flows out.
- a mounting base 16 that is attached to a turbine body (not shown) is provided on the side surface of the turbine blade 10.
- the suction surface 13 is provided with a concavo-convex forming portion 15 (concave / convex forming means) over the entire region in the width direction H of the turbine blade 10 (direction perpendicular to the chord direction).
- FIG. 2 is a cross-sectional view of the main part of the turbine blade 10 including the vicinity of the unevenness forming part 15.
- the unevenness forming portion 15 includes a plurality of low expansion coefficient coating materials 151, a high expansion coefficient coating material 1 52, and a plurality of alternately in the flow direction of force fluid F (in this embodiment, low expansion coefficient coating material).
- the material 151 is arranged in two rows and the high expansion coefficient coating material 152 is arranged in three rows.
- the low expansion coefficient coating material 151 is formed of an alloy material (metal material) having a smaller thermal expansion coefficient than the high expansion coefficient coating material 152.
- the low expansion coefficient coating material 151 for example, an alloy material containing platinum, a zirconium alloy or the like can be used.
- the high expansion coefficient coating material 152 is formed of an alloy material (metal material) having a larger thermal expansion coefficient than the low expansion coefficient coating material 151.
- an alloy material containing an aluminum alloy or the like can be used. That is, in the present embodiment, the unevenness forming portion 15 is made of a metal material group composed of a plurality of metal materials arranged in the flow direction of the fluid F and having different thermal expansion coefficients.
- the turbine blade 10 of the present embodiment causes the uneven surface 153 along the flow of the fluid F to appear on the suction surface 13 when exposed to a low temperature atmosphere, and is negative when exposed to a high temperature atmosphere.
- a concave / convex forming portion 15 is provided that makes the pressure surface 13 a smooth surface along a convex curved surface that is convex along the direction in which the fluid F flows.
- the high temperature atmosphere refers to a state in which the combustion energy of the combustor during takeoff and landing of the aircraft is high when the turbine on which the turbine blades 10 are installed is mounted on an aircraft jet engine. That is, the temperature at which the turbine blades 10 are exposed in a state where the engine output is high, and an atmosphere in which laminar flow separation does not occur regardless of the presence or absence of the concavo-convex portion 153 (atmosphere with a high Leicarez number).
- the low temperature atmosphere in this embodiment is
- the temperature difference between the high temperature atmosphere and the low temperature atmosphere is about 300 ° C
- the difference in thickness between the low expansion coefficient coating material 151 and the high expansion coefficient coating material 152 in the low temperature atmosphere is about 0. 05mm.
- the negative pressure surface 13 becomes a smooth surface as shown in FIG. Then, the flow of the fluid F flowing into the suction surface from the front edge 11 side of the turbine blade 10 flows out from the rear edge 12 of the turbine blade 10 as it is. In this way, in the state where laminar flow separation does not occur, the uneven portion 153 disappears from the suction surface 13, thereby reducing the pressure loss of the turbine blade 10 compared with the case where the uneven portion 153 is present. .
- the uneven portion 153 that suppresses the occurrence of laminar flow separation is formed on the negative pressure surface 13 when exposed to a low temperature atmosphere, and the high temperature atmosphere When exposed to water, the uneven portion 153 disappears from the suction surface 13. That is, the uneven portion 153 appears when the laikarez number is low and laminar flow separation occurs, and the uneven portion 153 disappears when the laikarez number is high and no laminar flow separation occurs.
- the pressure loss of the turbine blade 10 in the low temperature atmosphere can be reduced without increasing the pressure loss of the turbine blade 10 in the high temperature atmosphere.
- the formation position of the concavo-convex forming portion 15 is preferably located closer to the leading edge 11 than the maximum velocity point at which the flow velocity of the fluid F flowing into the suction surface 13 is maximum on the suction surface 13. That's right.
- the uneven portion 153 appears by positioning the uneven portion 15 on the leading edge 11 side from the maximum velocity point at which the flow velocity of the fluid F is maximum on the suction surface 13, the fluid F is uneven. It is possible to make the turbulent flow generated by hitting the part 153 stronger and further suppress the occurrence of laminar flow separation.
- FIG. 4 is a perspective view of the turbine blade 30 of the second embodiment. As shown in this figure, in the turbine blade 30 of the present embodiment, the unevenness provided over the entire region in the width direction H (direction perpendicular to the chord direction) of the turbine blade 10 in the first embodiment. The forming portion 15 is provided intermittently in the width direction H of the turbine blade 30.
- the formation material of the unevenness forming portion 15, that is, the low expansion coefficient coating material 151 and the high expansion coefficient coating material 152 can be reduced, and the cost can be further reduced.
- the pressure loss of the blade in the low temperature atmosphere can be reduced without increasing the pressure loss of the blade in the high temperature atmosphere.
- each of the rod-shaped members formed of the same metal material as the low expansion coefficient coating material 151 and the high expansion coefficient coating material 152 is formed.
- the concavo-convex forming portion 15 may be configured by burying a part of the ridges and alternately arranging them.
- the unevenness forming portion 15 has a plurality of low expansion coefficient coating materials 151 and a plurality of high expansion coefficient coating materials 152 alternately arranged has been described.
- the present invention is not limited to this, and the unevenness forming portion 15 may be constituted by the low expansion coefficient coating material 151 and the high expansion coefficient coating material 152 arranged in a row. . Further, the unevenness forming portion 15 may be configured such that a plurality of low expansion coefficient coating materials 151 and a plurality of high expansion coefficient coating materials 152 are alternately arranged.
- the configuration in which the unevenness forming portion 15 is made of two types of coating materials has been described.
- the present invention is not limited to this, and the concavo-convex forming portion 15 may be configured by arranging a plurality of types of coating materials. In such a case, since each coating material has a different coefficient of thermal expansion, it is possible to bring about a fine shape change by the concavo-convex forming portion 15.
- the unevenness forming means of the present invention is not limited to the configuration of the unevenness forming part 15 of the above embodiment, and is negative in a high temperature atmosphere depending on the temperature difference between the high temperature atmosphere and the low temperature atmosphere. Any material may be used as long as the uneven portion 153 is eliminated from the pressure surface 13 and the uneven portion 153 is formed on the negative pressure surface 13 in a low temperature atmosphere.
- a turbine in a turbine blade mounted on an aircraft jet engine, a turbine at a low Reikarez number in a low temperature atmosphere without increasing the pressure loss of the turbine blade at a high Reikarez number in a high temperature atmosphere.
- Use force S to reduce the pressure loss of the wing.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2673588A CA2673588C (en) | 2006-12-21 | 2007-12-19 | Turbine blade with temperature-dependent separation prevention means |
US12/520,562 US8235661B2 (en) | 2006-12-21 | 2007-12-19 | Turbine blade |
EP07850884.3A EP2123862B1 (en) | 2006-12-21 | 2007-12-19 | Turbine blade |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006343951A JP4793250B2 (ja) | 2006-12-21 | 2006-12-21 | タービン翼 |
JP2006-343951 | 2006-12-21 |
Publications (1)
Publication Number | Publication Date |
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WO2008075716A1 true WO2008075716A1 (ja) | 2008-06-26 |
Family
ID=39536343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/074414 WO2008075716A1 (ja) | 2006-12-21 | 2007-12-19 | タービン翼 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8235661B2 (ja) |
EP (1) | EP2123862B1 (ja) |
JP (1) | JP4793250B2 (ja) |
CA (1) | CA2673588C (ja) |
WO (1) | WO2008075716A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011081112A1 (de) * | 2011-08-17 | 2013-02-21 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren zur Herstellung eines Bauteils für hohe thermische Belastungen, ein Bauteil herstellbar mit dem Verfahren und ein Flugzeugtriebwerk mit dem Bauteil |
US9957801B2 (en) | 2012-08-03 | 2018-05-01 | United Technologies Corporation | Airfoil design having localized suction side curvatures |
US20150044052A1 (en) * | 2012-11-19 | 2015-02-12 | United Technologies Corporation | Geared Turbofan With Fan Blades Designed To Achieve Laminar Flow |
US10577948B2 (en) * | 2015-10-29 | 2020-03-03 | MTU Aero Engines AG | Turbine blade and aircraft engine comprising same |
US10519976B2 (en) * | 2017-01-09 | 2019-12-31 | Rolls-Royce Corporation | Fluid diodes with ridges to control boundary layer in axial compressor stator vane |
GB201716178D0 (en) * | 2017-10-04 | 2017-11-15 | Rolls Royce Plc | Blade or vane for a gas turbine engine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6036701A (ja) * | 1983-07-15 | 1985-02-25 | エム・テー・ウー・モトーレン‐・ウント・ツルビーネン‐ウニオーン・ミユンヘン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | ガス又は蒸気で運転されるタービンの軸方向で通流される翼列 |
JPH0735702A (ja) | 1993-07-21 | 1995-02-07 | Yokogawa Electric Corp | シート状物体の配向計 |
JPH0735702U (ja) * | 1993-12-09 | 1995-07-04 | 眞治 本阿彌 | 翼 列 |
US20030035968A1 (en) * | 2001-08-14 | 2003-02-20 | Gordon Anderson | Process for treating a coated gas turbine part, and coated gas turbine part |
JP2006343951A (ja) | 2005-06-08 | 2006-12-21 | Toshiba Corp | サンプルデータ作成システムおよびその作成プログラム |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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GB580806A (en) * | 1941-05-21 | 1946-09-20 | Alan Arnold Griffith | Improvements in compressor, turbine and like blades |
US3014640A (en) * | 1958-06-09 | 1961-12-26 | Gen Motors Corp | Axial flow compressor |
GB2046369A (en) * | 1979-04-04 | 1980-11-12 | Rolls Royce | Gas turbine blade |
JPH089998B2 (ja) * | 1987-01-26 | 1996-01-31 | 臼井国際産業株式会社 | 送風フアン用ブレ−ド |
JPH02140497A (ja) * | 1988-11-21 | 1990-05-30 | Usui Internatl Ind Co Ltd | 送風ファン用ブレード |
US5209644A (en) * | 1991-01-11 | 1993-05-11 | United Technologies Corporation | Flow directing element for the turbine of a rotary machine and method of operation therefor |
GB9920564D0 (en) * | 1999-08-31 | 1999-11-03 | Rolls Royce Plc | Axial flow turbines |
GB2356684A (en) * | 1999-11-24 | 2001-05-30 | Lorenzo Battisti | Boundary layer control using electroformed microporous material |
US7878759B2 (en) * | 2003-12-20 | 2011-02-01 | Rolls-Royce Deutschland Ltd & Co Kg | Mitigation of unsteady peak fan blade and disc stresses in turbofan engines through the use of flow control devices to stabilize boundary layer characteristics |
EP1580399B1 (de) * | 2004-03-25 | 2006-11-15 | Rolls-Royce Deutschland Ltd & Co KG | Verdichter für ein Flugzeugtriebwerk |
US7204731B2 (en) * | 2005-02-03 | 2007-04-17 | International Business Machines Corporation | Linear propulsor with radial motion |
-
2006
- 2006-12-21 JP JP2006343951A patent/JP4793250B2/ja active Active
-
2007
- 2007-12-19 WO PCT/JP2007/074414 patent/WO2008075716A1/ja active Application Filing
- 2007-12-19 CA CA2673588A patent/CA2673588C/en active Active
- 2007-12-19 US US12/520,562 patent/US8235661B2/en active Active
- 2007-12-19 EP EP07850884.3A patent/EP2123862B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6036701A (ja) * | 1983-07-15 | 1985-02-25 | エム・テー・ウー・モトーレン‐・ウント・ツルビーネン‐ウニオーン・ミユンヘン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | ガス又は蒸気で運転されるタービンの軸方向で通流される翼列 |
JPH0735702A (ja) | 1993-07-21 | 1995-02-07 | Yokogawa Electric Corp | シート状物体の配向計 |
JPH0735702U (ja) * | 1993-12-09 | 1995-07-04 | 眞治 本阿彌 | 翼 列 |
US20030035968A1 (en) * | 2001-08-14 | 2003-02-20 | Gordon Anderson | Process for treating a coated gas turbine part, and coated gas turbine part |
JP2006343951A (ja) | 2005-06-08 | 2006-12-21 | Toshiba Corp | サンプルデータ作成システムおよびその作成プログラム |
Non-Patent Citations (1)
Title |
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See also references of EP2123862A4 |
Also Published As
Publication number | Publication date |
---|---|
US20100014983A1 (en) | 2010-01-21 |
CA2673588A1 (en) | 2008-06-26 |
EP2123862A1 (en) | 2009-11-25 |
US8235661B2 (en) | 2012-08-07 |
EP2123862B1 (en) | 2016-08-03 |
EP2123862A4 (en) | 2013-05-01 |
CA2673588C (en) | 2013-01-29 |
JP2008157046A (ja) | 2008-07-10 |
JP4793250B2 (ja) | 2011-10-12 |
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