EP1458981B1 - Verdichter für gasturbinen - Google Patents
Verdichter für gasturbinen Download PDFInfo
- Publication number
- EP1458981B1 EP1458981B1 EP02803485A EP02803485A EP1458981B1 EP 1458981 B1 EP1458981 B1 EP 1458981B1 EP 02803485 A EP02803485 A EP 02803485A EP 02803485 A EP02803485 A EP 02803485A EP 1458981 B1 EP1458981 B1 EP 1458981B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layers
- compressor
- hardness
- coating
- layer
- 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.)
- Expired - Lifetime
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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/007—Preventing corrosion
-
- 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
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for 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
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/224—Carbon, e.g. graphite
-
- 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
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
-
- 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
- F05D2300/506—Hardness
-
- 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
- F05D2300/512—Hydrophobic, i.e. being or having non-wettable properties
-
- 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
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/604—Amorphous
-
- 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
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/611—Coating
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
Definitions
- the invention relates to a compressor for gas turbines and in particular a Coating for protection against liquid drops and solid particles on the surfaces of components are applied in the inlet area of the compressor.
- the components of compressors in turbines are during compressor operation exposed to various particles, which are the surfaces of the components sustainably damage.
- particles include liquid drops, including water droplets and solid particles such as Dust particles that enter the compressor with the intake air.
- ice particles to be mentioned which are due to desublimation due to the Cooling of the air by the acceleration of the air can form.
- the Components in the inlet region of the compressor is in particular the blading affected by potential damage from these particles.
- Liquids are injected with the gas or air stream. It becomes the Example for cleaning a mixture of water and a commercial concentrate by means of one or more atomizing nozzles in the compressor is injected as described for example in EP 0468024 is described.
- drop impact erosion occurs even after the formation of closed liquid films, if the components of the injected Liquid have been wetted.
- liquid separation from a surface Secondary big drops can form on the downstream side arranged components can cause drop impact erosion.
- a compressor for a gas turbine according to the invention comprises components such as For example, the blading, which on their surfaces with a coating are provided, the at least two layers of an amorphous carbon or a plasma polymer.
- the outermost layer of the coating has particular hydrophobic properties.
- All layers or layer systems that are low in size are suitable Have interface energy, if it is less than the surface tension of water.
- these layers also have the amorphous carbon or a Plasma polymer inherently high surface hardness, such as from 500 up to 3000 HV.
- amorphous carbon or a plasma polymer particularly suitable.
- the hydrophobic property of the outermost layer prevents the wetting of the Surfaces. Impacting drops of liquid go very low Interaction with the surface, since their interfacial energy is low. As a result, the liquid drops do not adhere to the surfaces, but rather roll over the surface while keeping its small size and without to unite with other drops or even a closed one Liquid film to form. The formation of large liquid drops through Tear off a closed film on an edge of a component is thereby prevented. The small drops can then also no significant To cause drop impact erosion.
- Hydrophobic layers such as amorphous carbon also have dirt-repellent properties. Because of that Rolling liquid droplets immediately, will cause a chemical interaction of the Liquid or components that are dissolved in the liquid, with the Surface prevented. This then avoids a deposit of other foreign material, which has a positive effect on the gas turbine performance and the Life of the coated components affects.
- the Components of the compressor on a protective coating which has a layer sequence a pair of layers or more pairs of layers, wherein the inner Layer of a layer pair compared to the outer layer of the layer pair has a higher hardness and the outer has a relatively low hardness.
- the inner layer of the layer pair has a hardness of 1500 to 3000 HV and the outer layer has a hardness of 500 HV up to 1500 HV.
- the individual layers of the Layer sequence thicknesses in the range of 0.1 to 2 microns.
- the thicknesses behave the individual layers of the layer sequence in inverse proportion to their relative hardness.
- the outer layer may have a thickness of 1.0 to 1.5 Micrometer and the inner layer has a thickness of 0.5 to 0.75 microns exhibit.
- the surfaces the components of the compressor, an adhesive layer on which a pair of layers or several pairs of layers are applied are applied.
- an adhesive layer is suitable for example a harder layer applied to titanium, which is the above-mentioned inner Layer corresponds.
- the hydrophobic coating contains amorphous carbon.
- amorphous carbon are to be understood in the following hydrogen-containing carbon layers with 10 to 50 at -% hydrogen content and with a ratio of sp 3 to sp 2 bonds between 0.1 to 0.9.
- all amorphous or dense carbon layers produced by means of carbon or hydro-carbon precursors as well as plasma polymer layers, polymer-like or dense carbon and hydrocarbon layers can be used, provided they have the hydrophobic and the following mechanical or chemical properties of the amorphous carbon for the production of individual layers or layer sequences.
- Amorphous carbon, also called diamond like carbon, is well known for its exceptional hardness, chemical stability as well as for its elasticity.
- amorphous carbon has a low surface energy compared to the surface tension of water, thus providing a hydrophobic or water repellent property.
- the hardness of amorphous carbon is variable by varying the parameters for the production of a coating.
- a layer of relatively lower hardness (within the hardness range of amorphous carbon) is considered to be less hard than a hard layer.
- a less hard layer has a pronounced hydrophobic property.
- the coating according to the invention can be realized by various, generally known production methods, such as, for example, deposition by means of glow discharge in a plasma from hydrocarbon-containing precursors, ion beam coating and sputtering of carbon in hydrogen-containing working gas.
- the substrate is exposed to a stream of ions of several hundred eV.
- the glow discharge the substrate is placed in a reactor chamber in contact with a cathode capacitively connected to a 13.56 MHz RF generator.
- the grounded walls of the plasma chamber form a large counterelectrode.
- any hydrocarbon vapor or hydrocarbon gas can be used as the first working gas for the coating.
- various gases are added to the first working gas.
- nitrogen fluorine or silicon-containing gases, for example, high or low surface energies are achieved.
- the addition of nitrogen additionally leads to an increase in the hardness of the resulting layer.
- the bias voltage across the electrodes between 100 and 1000 V, the resulting hardness of the layer is controllable, with high bias voltage resulting in a hard, amorphous carbon layer and low stress resulting in a relatively lower hardness amorphous carbon layer.
- the compressor according to the invention are all components that with the sucked air or with injected liquids come into contact with the Layer sequence provided.
- the components in the inlet area are like for example, the blading and the bearing for the adjustable Vorleit plinth to provide with it.
- the invention is to compressors for gas turbines of power plants of all kinds and also of turbine jet engines and other components in aircraft and Ships, such as the leading edge of aircraft wings.
- the components of the inventive compressor consist of materials such as For example, titanium, stainless steels, chrome steels, aluminum and carbide.
- the layer sequence described with adhesive layer is quite suitable for a Application on these materials.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Bei diesen Verfahren wird das Substrat einem Strom von Ionen von mehreren 100 eV ausgesetzt. Bei der Glimmentladung wird das Substrat in einer Reaktorkammer in Kontakt mit einer Kathode, die kapazitiv mit einem 13.56 MHz RF Generator verbunden ist, angeordnet. Die geerdeten Wände der Plasmakammer bilden dabei eine grosse Gegenelektrode. In dieser Anordnung lässt sich jeder Kohlenwasserstoffdampf oder jedes Kohlenwasserstoffgas als erstes Arbeitsgas für die Beschichtung verwenden. Um besondere Schichteigenschaften zu erzielen, beispielsweise verschiedene Oberflächenenergien, Härten, optische Eigenschaften usw. werden verschiedene Gase zum ersten Arbeitsgas dazugegeben. Unter Zugabe von Stickstoff, fluor- oder silizium-haltigen Gasen werden beispielsweise hohe oder niedrige Oberflächenenergien erreicht. Die Zugabe von Stickstoff führt zusätzlich zu einer Erhöhung der Härte der resultierenden Schicht. Ferner ist mittels der Veränderung der Bias-Spannung über den Elektroden zwischen 100 und 1000 V die resultierende Härte der Schicht steuerbar, wobei eine hohe Bias-Spannung zu einer harten, amorphen Kohlenstoffschicht und eine tiefe Spannung zu einer amorphen Kohlenstoffschicht mit relativ niedrigerer Härte führt.
Claims (7)
- Verdichter für eine Gasturbine, wobei
die Bauteile des Verdichters auf ihren Oberflächen eine Beschichtung zum Schutz gegen Erosion durch Flüssigkeitstropfen und/oder Feststoffpartikel aufweisen, die mindestens zwei Schichten aufweist, dadurch gekennzeichnet, dass die zwei Schichten amorphen Kohlenstoff oder ein Plasmapolymer enthalten, wobei die äusserste Schicht der Beschichtung hydrophobe Eigenschaften aufweist. - Verdichter nach Anspruch 1
dadurch gekennzeichnet, dass
die Beschichtung eine Schichtpaar oder eine Folge von mehreren Schichtpaaren aufweist, wobei die Härte der inneren Schicht eines Schichtpaares höher ist als die Härte der äusseren Schicht jenes Schichtpaares. - Verdichter nach Anspruch 2
dadurch gekennzeichnet, dass
die innere Schicht eines Schichtpaares eine Härte im Bereich von 1500 bis 3000 HV und die äussere Schicht eines Schichtpaares eine Härte im Bereich von 500 bis 1500 HV aufweist. - Verdichter nach einem der Ansprüche 2 oder 3
dadurch gekennzeichnet, dass
die Dicken der Schichten der Schichtenpaare sich in umgekehrtem Verhältnis zu ihrer Härte verhalten. - Verdichter nach einem der vorangehenden Ansprüche 2 bis 4
dadurch gekennzeichnet, dass
die Dicken der inneren und äusseren Schichten der Schichtpaare im Bereich von 0.1 bis 2 Mikrometern liegen. - Verdichter nach einem der vorangehenden Ansprüche
dadurch gekennzeichnet, dass
die Oberflächen der Verdichterbauteile zunächst eine Haftschicht aufweisen, auf denen die Beschichtung aufgetragen ist. - Verdichter nach einem der vorangehenden Ansprüche
dadurch gekennzeichnet, dass
Beschichtung auf den Oberflächen von Bauteilen im Einlassbereich des Verdichters, der Beschaufelung des Verdichters und/oder der Lagerstellen der verstellbaren Vorleitreihe aufgetragen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH212501 | 2001-11-19 | ||
CH21252001 | 2001-11-19 | ||
PCT/IB2002/004745 WO2003044374A1 (de) | 2001-11-19 | 2002-11-12 | Verdichter für gasturbinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1458981A1 EP1458981A1 (de) | 2004-09-22 |
EP1458981B1 true EP1458981B1 (de) | 2005-07-20 |
Family
ID=4567609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02803485A Expired - Lifetime EP1458981B1 (de) | 2001-11-19 | 2002-11-12 | Verdichter für gasturbinen |
Country Status (6)
Country | Link |
---|---|
US (1) | US7083389B2 (de) |
EP (1) | EP1458981B1 (de) |
JP (1) | JP2005518490A (de) |
AU (1) | AU2002366009A1 (de) |
DE (1) | DE50203708D1 (de) |
WO (1) | WO2003044374A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008009985U1 (de) * | 2008-07-24 | 2009-12-17 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Ventilator- oder Gebläserad mit einer Antihaftbeschichtung |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2002366009A1 (en) | 2001-11-19 | 2003-06-10 | Alstom Technology Ltd | Compressor for gas turbines |
GB2382848A (en) | 2001-12-06 | 2003-06-11 | Alstom | Gas turbine wet compression |
GB2382847A (en) | 2001-12-06 | 2003-06-11 | Alstom | Gas turbine wet compression |
US7247348B2 (en) * | 2004-02-25 | 2007-07-24 | Honeywell International, Inc. | Method for manufacturing a erosion preventative diamond-like coating for a turbine engine compressor blade |
CN1296517C (zh) * | 2004-10-14 | 2007-01-24 | 北京工业大学 | 后续表面氟化处理的非晶碳薄膜疏水材料的制备方法 |
JP4611914B2 (ja) * | 2006-02-28 | 2011-01-12 | トーカロ株式会社 | 圧縮機翼及びその製造方法、並びに、火力発電用ガスタービン |
JP2007327349A (ja) * | 2006-06-06 | 2007-12-20 | Tocalo Co Ltd | 送液ポンプ用部材及びその製造方法 |
EP1925782A1 (de) * | 2006-11-23 | 2008-05-28 | Siemens Aktiengesellschaft | Unbenetzbare Flächenbeschichtung von Nassdampfturbinenbauteilen |
DE102007042124A1 (de) * | 2007-09-05 | 2009-03-12 | Lufthansa Technik Ag | Triebwerksbauteil für eine Gasturbine |
NO2133572T3 (de) * | 2008-06-12 | 2018-04-14 | ||
JP5244495B2 (ja) * | 2008-08-06 | 2013-07-24 | 三菱重工業株式会社 | 回転機械用の部品 |
DE102009003898A1 (de) | 2009-01-03 | 2010-07-08 | Harald Prof. Dr. Dr. habil. Reiss | Turbinenschaufeln und andere massive Bauteile |
FR3003539B1 (fr) | 2013-03-22 | 2016-04-15 | European Aeronautic Defence & Space Co Eads France | Structure anti-erosion pour aeronefs |
US20140321976A1 (en) * | 2013-04-26 | 2014-10-30 | Sol-Electrica, Llc | Modular thermal molecular adhesion turbine |
EP3129596B1 (de) * | 2014-04-09 | 2023-12-13 | Nuovo Pignone Tecnologie - S.r.l. | Verfahren zum schutz einer komponente einer turbomaschine vor der erosion durch flüssigkeitströpfchen, komponente und turbomaschine |
WO2017222516A1 (en) * | 2016-06-22 | 2017-12-28 | Siemens Aktiengesellschaft | Method and system for reducing liquid droplet impact damage by superhydrophobic surfaces |
CN110049820B (zh) | 2016-12-05 | 2021-07-20 | 康明斯过滤Ip公司 | 具有单件式脉冲涡轮机的分离组件 |
US11471808B2 (en) | 2017-01-09 | 2022-10-18 | Cummins Filtration Ip, Inc. | Impulse turbine with non-wetting surface for improved hydraulic efficiency |
US11261762B2 (en) | 2017-11-21 | 2022-03-01 | Bl Technologies, Inc. | Improving steam power plant efficiency with novel steam cycle treatments |
US12030063B2 (en) | 2018-02-02 | 2024-07-09 | Cummins Filtration Ip, Inc. | Separation assembly with a single-piece impulse turbine |
EP3781289B1 (de) | 2018-04-17 | 2024-08-21 | Cummins Filtration IP, Inc. | Trennanordnung mit zweiteiliger impulsturbine |
US11015474B2 (en) * | 2018-10-19 | 2021-05-25 | Raytheon Technologies Corporation | Geometrically segmented abradable ceramic thermal barrier coating with improved spallation resistance |
JP7146582B2 (ja) * | 2018-11-08 | 2022-10-04 | キヤノン株式会社 | 液体吐出ヘッド |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2899943A (en) | 1959-08-18 | Preventing stalling of carbureted | ||
SU572576A1 (ru) * | 1965-07-07 | 1977-09-15 | Yavelskij Mikhail B | Влажнопарова турбина |
US4695229A (en) | 1984-05-17 | 1987-09-22 | Feuling James J | Friction reduction for moving elements in contact with a fluid medium |
SU1507991A1 (ru) | 1988-01-13 | 1989-09-15 | Комсомольский-на-Амуре политехнический институт | Лопатка влажнопаровой ступени турбины |
CH681381A5 (de) | 1990-02-14 | 1993-03-15 | Turbotect Ag | |
US5707717A (en) * | 1991-10-29 | 1998-01-13 | Tdk Corporation | Articles having diamond-like protective film |
EP0589641A3 (en) | 1992-09-24 | 1995-09-27 | Gen Electric | Method of producing wear resistant articles |
US5463873A (en) | 1993-12-06 | 1995-11-07 | Cool Fog Systems, Inc. | Method and apparatus for evaporative cooling of air leading to a gas turbine engine |
US5714202A (en) * | 1995-06-07 | 1998-02-03 | Lemelson; Jerome H. | Synthetic diamond overlays for gas turbine engine parts having thermal barrier coatings |
DE19625329A1 (de) * | 1996-06-25 | 1998-01-08 | Karlsruhe Forschzent | Stoffverbund und Verfahren zu dessen Herstellung |
DE19808180A1 (de) * | 1998-02-26 | 1999-09-09 | Bosch Gmbh Robert | Kombinierte Verschleißschutzschicht, Verfahren zur Erzeugung derselben, die damit beschichteten Objekte und deren Verwendung |
AU4566400A (en) * | 1999-06-08 | 2000-12-28 | N.V. Bekaert S.A. | A doped diamond-like carbon coating |
DE10026477A1 (de) * | 2000-05-27 | 2001-11-29 | Abb Patent Gmbh | Schutzüberzug für metallische Bauelemente |
DE10056242A1 (de) * | 2000-11-14 | 2002-05-23 | Alstom Switzerland Ltd | Kondensationswärmeübertrager |
DE10056241B4 (de) * | 2000-11-14 | 2010-12-09 | Alstom Technology Ltd. | Niederdruckdampfturbine |
AU2002366009A1 (en) | 2001-11-19 | 2003-06-10 | Alstom Technology Ltd | Compressor for gas turbines |
-
2002
- 2002-11-12 AU AU2002366009A patent/AU2002366009A1/en not_active Abandoned
- 2002-11-12 JP JP2003545972A patent/JP2005518490A/ja not_active Withdrawn
- 2002-11-12 DE DE50203708T patent/DE50203708D1/de not_active Expired - Lifetime
- 2002-11-12 WO PCT/IB2002/004745 patent/WO2003044374A1/de active IP Right Grant
- 2002-11-12 EP EP02803485A patent/EP1458981B1/de not_active Expired - Lifetime
-
2004
- 2004-05-18 US US10/847,473 patent/US7083389B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008009985U1 (de) * | 2008-07-24 | 2009-12-17 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Ventilator- oder Gebläserad mit einer Antihaftbeschichtung |
Also Published As
Publication number | Publication date |
---|---|
EP1458981A1 (de) | 2004-09-22 |
AU2002366009A1 (en) | 2003-06-10 |
JP2005518490A (ja) | 2005-06-23 |
US20040213675A1 (en) | 2004-10-28 |
US7083389B2 (en) | 2006-08-01 |
DE50203708D1 (de) | 2005-08-25 |
WO2003044374A1 (de) | 2003-05-30 |
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