EP4402346A1 - Elément de turbomachine comprenant au moins une pale obtenue par fabrication additive - Google Patents
Elément de turbomachine comprenant au moins une pale obtenue par fabrication additiveInfo
- Publication number
- EP4402346A1 EP4402346A1 EP22789265.0A EP22789265A EP4402346A1 EP 4402346 A1 EP4402346 A1 EP 4402346A1 EP 22789265 A EP22789265 A EP 22789265A EP 4402346 A1 EP4402346 A1 EP 4402346A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- skin
- turbomachine
- lattice
- additive manufacturing
- 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.)
- Pending
Links
Classifications
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- 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
- F01D9/06—Fluid supply conduits to nozzles or the like
- F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
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- 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
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
- F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
- F01D5/189—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall the insert having a tubular cross-section, e.g. airfoil shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
- B22F10/47—Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1103—Making porous workpieces or articles with particular physical characteristics
- B22F3/1115—Making porous workpieces or articles with particular physical characteristics comprising complex forms, e.g. honeycombs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/04—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- 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
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
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- 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
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- 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
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
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- 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
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/22—Manufacture essentially without removing material by sintering
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- 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
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
- F05D2230/234—Laser welding
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- 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
- F05D2230/00—Manufacture
- F05D2230/30—Manufacture with deposition of material
- F05D2230/31—Layer deposition
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- 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
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/11—Shroud seal segments
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- 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
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
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- 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
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/28—Three-dimensional patterned
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- 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
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/28—Three-dimensional patterned
- F05D2250/283—Three-dimensional patterned honeycomb
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- 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
- F05D2250/00—Geometry
- F05D2250/30—Arrangement of components
- F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
- F05D2250/313—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being perpendicular to each other
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- 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
- F05D2250/00—Geometry
- F05D2250/30—Arrangement of components
- F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
- F05D2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
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- 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
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/75—Shape given by its similarity to a letter, e.g. T-shaped
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- 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
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
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- 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
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/221—Improvement of heat transfer
- F05D2260/2212—Improvement of heat transfer by creating turbulence
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- 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
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/221—Improvement of heat transfer
- F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
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- 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
- F05D2300/514—Porosity
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- 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
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- 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
- F05D2300/612—Foam
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- 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
- F05D2300/613—Felt
Definitions
- Turbomachine element comprising at least one blade obtained by additive manufacturing
- the present invention relates to the field of turbomachines and more particularly to systems for cooling turbomachine elements.
- the parts are subjected to very high thermal stresses. To prevent certain elements from breaking or wearing out prematurely, it is necessary to cool them during the operation of the turbomachine.
- This system allows effective cooling but is not optimal when producing the element (blade, blade or distributor) using additive manufacturing.
- a blade (or a blade) can be a hollow part, during its production in additive manufacturing, it may be necessary to integrate a manufacturing support, in dawn. Depending on the manufacturing direction, the support makes it possible to support the deposited material, for example to produce one of the outer faces of the blade.
- turbomachine element comprising a blade having a structure adapted to be cooled and to be produced by additive manufacturing.
- the invention proposes a turbomachine element, comprising at least one blade obtained by additive manufacturing, the blade having a skin and an internal lattice allowing air circulation in the blade and having a manufacturing support function skin additive.
- the mesh can have a variable density.
- the mesh may have a higher density close to the skin.
- the blade may have at least one insert positioned in the lattice.
- the insert may have at least one opening allowing air to circulate towards the skin.
- the trellis may comprise an internal portion and an external portion, separated by the insert.
- the element may have two circumferential vein walls between which said at least one blade extends in a direction radial to a main axis of the turbomachine, the skin forming two tangential walls of said at least one blade.
- the blade may have openings extending in a plane perpendicular to the radial direction.
- the blade may not have a wall extending along a plane perpendicular to the radial direction.
- the element can be chosen from a high pressure distributor, an inlet guide vane, a variable stator vane.
- the invention proposes an aircraft turbine engine, the turbine engine comprising an element according to the first aspect.
- the invention proposes an aircraft comprising a turbomachine according to the second aspect.
- the invention proposes a method for manufacturing a turbomachine element according to the first aspect, the method comprising the additive manufacture of a skin of a blade of the element using a lattice as a support, the lattice extending into the blade after manufacture.
- Figure 1 is a representation of a prior art device.
- Figure 2 is a representation of a prior art device.
- Figure 3 is a representation of a prior art device.
- Figure 4 is a representation of a prior art device.
- Figure 5 is a representation of a known additive manufacturing device.
- Figure 6 is a representation in radial section, substantially perpendicular to the flow intended to flow around the blade, of a blade according to the invention.
- FIG. 7 is an exploded representation of a blade according to the invention.
- Figure 8 is an enlarged representation of a portion of a blade according to the invention.
- Figure 9 is a sectional representation, in a substantially circumferential plane, of a portion of a blade according to the invention.
- the invention proposes a turbomachine element 1, comprising at least one blade 2 obtained by additive manufacturing.
- the turbomachine may for example be a turbofan aircraft engine well known to those skilled in the art, conventionally comprising a fan (commonly called a "fan"), a compressor, a combustion chamber, a high turbine pressure and a low pressure turbine.
- a fan commonly called a "fan”
- the fan has large dimensions compared to the other components, and the air flow passing through in particular the combustion chamber and the high and low pressure turbines represents a small portion of the total air flow. passing through the fan. Part of the air flow passing through the fan is therefore directly expelled, while another part passes through the compressor, the combustion chamber, and the high and low pressure turbines.
- the invention relates to an element 1 comprising a blade 2.
- the blade 2 has a skin 4 and a lattice 6. It is specified that in use conditions, the blade 2 is intended to be cooled by air or a gas colder than the hot gases circulating in a stream of the turbomachine.
- the skin 4 is an outer envelope of the blade 2.
- the blade 2 has a geometry with a leading edge 7, a trailing edge 8, an underside 10 and an upper surface 12.
- the blade 2 according to the invention is preferably manufactured using an additive manufacturing process.
- the blade 2 made in additive manufacturing is not made up of several assembled parts, but is a one-piece part comprising several elements.
- the blade 2 comprises an internal mesh 6 linked to the skin 4.
- the mesh 6 makes it possible to support the skin 4 to guarantee the mechanical resistance of the blade 2.
- the lattice 6 allows air to circulate in the blade 2 and has a support function for the additive manufacturing of the skin 4.
- This dual function of the lattice 6 is a technical arrangement particularly advantage of the invention.
- the trellis 6 is an economical manufacturing support because it has empty areas and therefore requires less material for its manufacture than a solid element.
- the use of a lattice 6 as the framework of the blade 2 makes it possible both to guarantee the mechanical strength of the blade while allowing optimal internal cooling.
- lattice 6 it is understood a lattice structure, that is to say an architectural structure composed of a material and empty zones.
- the lattice is a material mesh (typically a metal alloy) consisting of a network of solid structures 16 (for example in metal alloy) and empty zones 1 between the structures.
- empty zone 14 is meant zones without solid matter consolidated by additive manufacturing. More specifically, in these empty areas 14, powder is deposited during manufacture. But, this powder is not fused, then is removed at the end of the manufacturing process.
- the empty zones 14 are filled with a gas making up the atmosphere in which the trellis 6 is located.
- the empty zones 14 can be filled with a neutral gas or ambient terrestrial air (i.e. a gas mixture composed essentially of nitrogen, carbon dioxide and oxygen).
- network of solid structures 16 is meant a repetition of an elementary mesh in the three directions of space forming a grid, the elementary mesh being of any geometry and comprising a closed pattern.
- the mesh 6 can have a variable density.
- variable density it is meant that the amount of material and the dimensions of the mesh vary within the lattice.
- an area of greater density is an area in which (compared to the rest of the lattice) there is a higher concentration of solid structures 16 and a lower concentration of empty areas 14.
- an area of lower density is an area in which (compared to the rest of the lattice) there is a lower concentration of solid structures 16 and a higher concentration of empty areas.
- the volume of an empty area is greater than the volume of an empty area in an area of higher density.
- the mesh 6 may have a higher density close to the skin 4. This arrangement makes it possible to guarantee optimal air circulation in the blade, while offering optimal mechanical support to the skin and participating in the heat exchanges.
- the blade may comprise an insert 20 positioned in the lattice 6.
- the insert 20 can be a solid element (unlike the lattice).
- solid element it is understood that the insert 20 has solid walls made of solid materials (with the exception of openings made in the insert as will be described below).
- the insert 20 has a geometry similar to the geometry of the blade 2.
- the insert 20 has a wing geometry with a leading edge, a trailing edge, an intrados and an extrados.
- the insert has a hollow radial section and defines an interior volume 22.
- the insert 20 may have at least one opening 21 allowing air to circulate towards the skin.
- the insert 20 has a plurality of openings 21. The openings 21 pass through the wall of the insert to allow air circulation from the interior volume to the exterior.
- Insert 20 is fabricated and positioned within lattice 6, such that it divides lattice 6 into an inner portion 61 positioned within insert 6 and an outer portion 62 located outside the insert 20. It is specified that in Figure 7 the insert 20 and the lattice 6 are shown separated. Nevertheless, it is an exploded representation allowing only to observe each element separately. Indeed, the mesh 6 and the insert 20 are manufactured at the same time and are linked so as to form one and the same piece (with the skin 4 too).
- the openings 21 of the insert 20 are positioned so as to open into empty areas 14 of the trellis 6, to allow the most optimal possible air circulation.
- the element may have two circumferential vein walls 24 between which said at least one blade extends in a direction radial to a main axis of the turbomachine, this direction corresponding to the direction of the height of the blade, the skin forming two tangential walls of said at least one blade.
- vein walls each define a radial opening.
- the blade has openings extending a plane perpendicular to the direction radial to the axis.
- the vein walls 24 act as radial abutments framing the trellis.
- the blade is hollow in the radial direction and may not have a wall extending along a plane perpendicular to the radial direction.
- the blade 2 has no wall in a plane perpendicular to the radial direction.
- air can enter the blade 2 through one and/or the other of the two radially internal and external vein walls 24 of the blade 2 and circulate therein via the lattice 6 and the openings 21 of the insert (as shown by arrow IV), to cool the skin.
- the element is chosen from a high pressure distributor, an inlet guide vane, a variable stator vane.
- the invention relates to a process for the additive manufacturing of an element according to the invention.
- the additive manufacturing process is a powder bed laser melting process (also called LBM Laser Beam Melting or SLM Selective Laser Melting). It is a crude production process that is part of the family of additive manufacturing processes.
- an LBM process uses an additive manufacturing machine A (shown in Figure 5 integrating a laser B, a mirror C, a scraper D, a powder tank E and a manufacturing plate F.
- the LBM process takes place in different stages which are repeated until the final object is obtained:
- a layer of metal powder is spread using a scraper on the build plate.
- the powder is fused locally by a laser
- the build plate descends one layer thick
- the various constituent members skin, mesh and insert
- the various constituent members are manufactured simultaneously layer by layer, to form a single, one-piece piece.
- the mesh helps to support the skin and the insert.
- the mesh has a double function of support during manufacture and of mechanical structure contributing to the resistance and the cooling of the element.
- the invention relates to a turbomachine comprising a regulation assembly 10.
- the invention relates to an aircraft comprising at least one turbomachine.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Fluid Mechanics (AREA)
- Architecture (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Powder Metallurgy (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2109800A FR3127252B1 (fr) | 2021-09-17 | 2021-09-17 | Elément de turbomachine comprenant au moins une pale obtenue par fabrication additive |
| PCT/FR2022/051747 WO2023041880A1 (fr) | 2021-09-17 | 2022-09-16 | Elément de turbomachine comprenant au moins une pale obtenue par fabrication additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4402346A1 true EP4402346A1 (fr) | 2024-07-24 |
Family
ID=79601901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22789265.0A Pending EP4402346A1 (fr) | 2021-09-17 | 2022-09-16 | Elément de turbomachine comprenant au moins une pale obtenue par fabrication additive |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240384660A1 (fr) |
| EP (1) | EP4402346A1 (fr) |
| CN (1) | CN117980583A (fr) |
| CA (1) | CA3231937A1 (fr) |
| FR (1) | FR3127252B1 (fr) |
| WO (1) | WO2023041880A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3158459A1 (fr) * | 2024-01-24 | 2025-07-25 | Safran Additive Manufacturing Campus | Support pour fabrication additive d’une pièce par fusion laser sur lit de poudre |
| US12431763B1 (en) * | 2024-05-09 | 2025-09-30 | Whisper Aero Inc. | Conductive aerodynamic stator |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695582B2 (en) * | 2002-06-06 | 2004-02-24 | General Electric Company | Turbine blade wall cooling apparatus and method of fabrication |
| US8342797B2 (en) * | 2009-08-31 | 2013-01-01 | Rolls-Royce North American Technologies Inc. | Cooled gas turbine engine airflow member |
| US9470095B2 (en) * | 2012-04-24 | 2016-10-18 | United Technologies Corporation | Airfoil having internal lattice network |
| BE1022481B1 (fr) * | 2014-10-28 | 2016-05-02 | Techspace Aero S.A. | Aube a treillis de compresseur de turbomachine axiale |
| US10704841B2 (en) * | 2017-01-03 | 2020-07-07 | Titan Tensor LLC | Monolithic bicontinuous labyrinth structures and methods for their manufacture |
| DE102017208631A1 (de) * | 2017-05-22 | 2018-11-22 | Siemens Aktiengesellschaft | Verfahren zum Herstellen einer schwingungsdämpfenden Strukturkombination zur Dämpfung von Schwingungen bewegbarer Massen |
| US10808545B2 (en) * | 2017-07-14 | 2020-10-20 | United Technologies Corporation | Gas turbine engine fan blade, design, and fabrication |
| FR3085713B1 (fr) | 2018-09-12 | 2021-01-01 | Safran Helicopter Engines | Aube d'une turbine de turbomachine |
| EP3894664B1 (fr) * | 2018-12-11 | 2023-07-26 | General Electric Company | Structures en treillis destinées à être utilisées dans un système d'amortissement pour une aube de turbine, système d'amortissement de vibrations pour une aube de turbine et aube de turbine |
| FR3108145B1 (fr) * | 2020-03-13 | 2022-02-18 | Safran Helicopter Engines | Aube creuse de turbomachine |
| EP3926139B1 (fr) * | 2020-06-19 | 2023-06-07 | ITP Engines UK Ltd | Roue de rotor à pales |
| US11814973B2 (en) * | 2022-01-04 | 2023-11-14 | General Electric Company | Methods and apparatus to provide damping of an airfoil |
| US12055065B1 (en) * | 2023-08-24 | 2024-08-06 | General Electric Company | Airfoil for a gas turbine engine having an inner core structure formed of meta-structures and isogrids |
-
2021
- 2021-09-17 FR FR2109800A patent/FR3127252B1/fr active Active
-
2022
- 2022-09-16 CN CN202280063025.9A patent/CN117980583A/zh active Pending
- 2022-09-16 US US18/692,557 patent/US20240384660A1/en active Pending
- 2022-09-16 CA CA3231937A patent/CA3231937A1/fr active Pending
- 2022-09-16 EP EP22789265.0A patent/EP4402346A1/fr active Pending
- 2022-09-16 WO PCT/FR2022/051747 patent/WO2023041880A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN117980583A (zh) | 2024-05-03 |
| FR3127252A1 (fr) | 2023-03-24 |
| US20240384660A1 (en) | 2024-11-21 |
| WO2023041880A1 (fr) | 2023-03-23 |
| CA3231937A1 (fr) | 2023-03-23 |
| FR3127252B1 (fr) | 2025-05-16 |
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