[go: up one dir, main page]

EP1432915A1 - Centrifugal wheel - Google Patents

Centrifugal wheel

Info

Publication number
EP1432915A1
EP1432915A1 EP02800630A EP02800630A EP1432915A1 EP 1432915 A1 EP1432915 A1 EP 1432915A1 EP 02800630 A EP02800630 A EP 02800630A EP 02800630 A EP02800630 A EP 02800630A EP 1432915 A1 EP1432915 A1 EP 1432915A1
Authority
EP
European Patent Office
Prior art keywords
wheel
blades
hub
metal
flange
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.)
Granted
Application number
EP02800630A
Other languages
German (de)
French (fr)
Other versions
EP1432915B1 (en
Inventor
Alain François Emile GODICHON
Pierre Jacques François GRASSI
Sylvain Georges Raymond Guillemin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Howden Solyvent Ventec SAS
Original Assignee
Flakt Solyvent Ventec SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Flakt Solyvent Ventec SAS filed Critical Flakt Solyvent Ventec SAS
Publication of EP1432915A1 publication Critical patent/EP1432915A1/en
Application granted granted Critical
Publication of EP1432915B1 publication Critical patent/EP1432915B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • 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
    • F05D2300/603—Composites; e.g. fibre-reinforced

Definitions

  • the present invention relates to the technical field of fan wheels or ventilation wheels or centrifugal compression wheels, intended to equip devices of the fan or centrifugal compressor type.
  • the present invention relates to a centrifugal compression wheel comprising a metal hub intended to be connected to a drive shaft and on which are fixed an inlet flange and an outlet flange between which are fixed ventilation vanes, as well as its manufacturing process.
  • Centrifugal compression wheels intended to equip various fans or compressors are widely known and generally consist of a series of blades arranged around an axis of rotation and connected together by parts of revolution which may have the form of 'a disc, a cone, or a ring or which can be of any toroidal shape.
  • the object of the invention therefore aims to remedy the various drawbacks listed above and to propose a new centrifugal compression wheel made of composite material and having improved resistance to deformation.
  • Another object of the invention is to propose a new centrifugal compression wheel having improved resistance to angular deformation around an axis perpendicular to the axis of rotation.
  • Another object of the invention is to propose a new centrifugal compression wheel of simplified design.
  • Another object of the invention is to propose a new centrifugal compression wheel whose assembly and assembly are particularly simplified.
  • Another object of the invention is to propose a new centrifugal compression wheel having good resistance to external aggressions.
  • An object of the invention also aims to propose a new method of manufacturing a composite centrifugal compression wheel which is particularly simple to implement and to produce.
  • centrifugal compression wheels comprising a metal hub intended to be connected to a drive shaft, and on which are fixed an inlet flange and an outlet flange between which blades are fixed, characterized in that they comprise an annular metallic insert which is integrated in the central part of the wheel at the periphery of the hub, and which comprises metallic elements forming the start of the blades of the wheel, the flange inlet and outlet flange as well as the remaining and peripheral part of the blades being made of composite material to constitute the composite part of the wheel.
  • a centrifugal compression wheel comprising a metal hub on which are fixed an inlet flange and an outlet flange between which are fixed blades, characterized in that it comprises the following stages:
  • a metal insert is produced which comprises metal elements forming the start of the blades of the wheel;
  • FIG. 1 illustrates, in a perspective view, an embodiment of a centrifugal compression wheel according to the invention.
  • FIG. 2 illustrates, in a partial cross-sectional view, a first alternative embodiment according to the invention.
  • FIG. 3 illustrates, in a partial cross-sectional view, another alternative embodiment of the invention.
  • FIG. 4 illustrates, in a partial cross-sectional view, an additional alternative embodiment of the invention.
  • FIG. 5 illustrates, in a transverse view of a compression wheel according to the invention, a detail of embodiment of a compression wheel having parallel flanges.
  • the device according to the invention is formed by a centrifugal compression wheel 1 comprising a metal hub 2 intended to be connected, by any known means, to a drive shaft 3.
  • the centrifugal compression wheel 1 is formed by two flanges, for example circular 4, 5, provided with a central opening, and respectively defining an inlet flange 4 and an outlet flange 5 of the fluid flow (in general of the air) to transport and transit.
  • a series of vanes 7 is interposed between the inlet flanges 4 and the outlet 5, forming a spacer.
  • the blades 7 are most often inclined and sometimes purely radial, depending on the specifics and the field of application of the centrifugal compression wheel 1.
  • the inlet flanges 4 and outlet 5 can be planar, or of conical shape or any other surface of revolution around the axis of the wheel, as illustrated in FIGS. 2 to 5, and can be associated in pairs indifferently to form a pair of parallel flanges ( Figure 5) or to form a pair of flanges associating a conical inlet flange 4 with an outlet flange 5 plane ( Figures 2 to 4).
  • the two flanges 4, 5 can both be also conical without departing from the scope of the invention.
  • the centrifugal compression wheel 1 comprises an annular metal insert 8 which is integrated in the central part of the compression wheel 1 at the periphery of the hub 2 and in the vicinity of the central opening of the flanges 4, 5, and which comprises metallic elements 7A forming the start of the blades of the wheel, the inlet flange 4 and the outlet flange 5 as well as the remaining and peripheral part 7B of the blades being made of composite material to constitute the composite part of said wheel.
  • the metal elements 7A thus form the leading edge of the blades 7, which then consist of two sections extending one inside the other to constitute a complete blade, namely an internal section formed by metal elements 7A and a peripheral section of composite material 7B. Thanks to this specific assembly, the deformations at the level of the composite wheel are greatly reduced, which increases the general robustness of the wheel, in particular for wheels rotating at high peripheral speed, while benefiting from the good resistance of the metallic material which composes the leading edge of the vanes 7. It is in fact mainly at the leading edges of the blades that the aggression of solid or liquid particles conveyed by the aspirated fluid is maximum.
  • the metal insert 8 is mounted between the two flanges 4, 5 so as to be able to support the composite part over its entire transverse width.
  • the metal insert 8 is formed by an annular piece independent of the hub 2 and attached to the latter by any known means, and for example by welding or bolting.
  • the metal insert 8 is formed by two annular bodies 8A, 8B having the form of flanges and concentric with the hub 2, these two annular bodies 8A, 8B being spaced from one another. Between these latter are arranged and interposed at regular intervals the metal elements 7A forming the metal primers of the blades 7.
  • Each annular body 8A, 8B is made integral with the flanges 4, 5 by means of a fixing means, and for example by a set of bolts 10 ensuring on one side the support and the support between the hub 2 and the outlet flange 5, and on the other side the connection between the annular body 8A and the inlet flange 4.
  • a fixing means and for example by a set of bolts 10 ensuring on one side the support and the support between the hub 2 and the outlet flange 5, and on the other side the connection between the annular body 8A and the inlet flange 4.
  • the hub 2 can advantageously include in its external peripheral part an annular flat 11, for positioning radially in consideration of the axis of the drive shaft 3, the outlet flange 5. As illustrated in FIG. 4, the annular flat 11 is formed on the internal face of the hub 2 facing the inlet flange 4.
  • the metal insert 8 is an integral part of the hub 2 so as to form only one single piece with the latter.
  • the hub 2 comprises, towards its peripheral upper part, an annular flat 11 formed on the external face of the hub so as to form a projection on which the outlet flange 5 rests.
  • the front flange 4 is supported by the front part and annular 12 of the hub 2, which advantageously comprises, as illustrated in FIG. 2, a circular neck 13 on which rests, peripherally, the inlet flange 4.
  • the assembly is carried out by a set of bolts 10, or by any other equivalent means well known to those skilled in the art.
  • the composite wheel according to the invention may include a metallic annular reinforcement 15 mounted against the external face of one of the flanges, in this case in this case, against the inlet flange 4.
  • the metallic annular reinforcement 15 is assembled with the metallic insert 8, in the present case, with the annular part 12 of the hub 2, through the flange 4 to support the composite part.
  • the metallic annular reinforcement 15 is mounted on and against the outside of the inlet flange 4, it being understood that as a variant, and for further strengthening the robustness of the assembly, a second metallic annular reinforcement 15 could be mounted against the outlet flange 5.
  • the metal insert 8 can be produced using techniques well known to those skilled in the art, and for example by machining or molding, or can be composed of separate parts and assembled by welding.
  • the composite part of the compression wheel according to the invention can be produced either by molding of composite materials, or by conventional methods involving the assembly of various components or composite elements connected by successive stages of a mechanical process or a process involving a series of bonding steps.
  • the material constituting the composite part of the wheel is determined according to the manufacturing method used.
  • the method of manufacturing a centrifugal compression wheel comprising a metal hub on which is fixed an inlet flange and an outlet flange between which blades are fixed is characterized in that it involves the following steps:
  • a metal insert is produced which comprises metal elements forming the start of the blades of the wheel;
  • a composite part of the impeller formed by the inlet flange, the outlet flange and the remaining and peripheral portion of the blades is assembled directly on said insert, by a suitable method.
  • the assembly that is to say the joining or junction between the metal insert and the composite part, can be carried out mechanically using any conventional fixing means, the composite part therefore being produced separately during 'a previous step.
  • step b) of assembly is carried out at the same time as the manufacturing operation of the composite part, by directly molding the composite part of the wheel on the metal insert.
  • the molding operation is carried out by overmolding of one (or more) composite material.
  • the metal insert thus constitutes a support for the centrifugal forces applied to the wheel capable of reducing the deformations.
  • the compression wheel will be perfectly symmetrical, which facilitates its manufacture, reduces the cost of tooling, and also has an advantage in deformation reduction material.
  • the integration of a metal structure in the inlet and suction area of the composite wheel constitutes excellent protection of the composite parts of the wheel against deteriorating agents such as solid or liquid particles carried by the sucked fluid. .
  • the invention finds its industrial application in the design and manufacture of centrifugal fans or compressors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Centrifugal Separators (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Braking Arrangements (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

The invention concerns a centrifugal wheel comprising a metallic hub (2) designed to be linked to a drive shaft (3), and whereon are fixed an input end shield (4) and an output end shield (5) between which are fixed blades (7A, 7B). The invention is characterized in that it comprises an annular metallic insert (8) which is integrated in the central part of the wheel at the periphery of the hub (2), and which includes metallic elements (7A) forming the initial part of the wheel blades, the input end shield (4) and the output end shield (5) and the remaining and peripheral part (7B) of the vanes being made of a composite material to form the composite part of the wheel. The invention is applicable to industrial fan wheels.

Description

ROUE CENTRIFUGE CENTRIFUGAL WHEEL
DOMAINE TECHNIQUETECHNICAL AREA
La présente invention se rapporte au domaine technique des roues de soufflante ou roues de ventilation ou encore roues de compression centrifuge, destinées à équiper des appareils du type ventilateur ou compresseur centrifuge.The present invention relates to the technical field of fan wheels or ventilation wheels or centrifugal compression wheels, intended to equip devices of the fan or centrifugal compressor type.
La présente invention concerne une roue de compression centrifuge comprenant un moyeu métallique destiné à être relié à un arbre d'entraînement et sur lequel sont fixés un flasque d'entrée et un flasque de sortie entre lesquels sont fixées des aubes de ventilation, ainsi que son procédé de fabrication.The present invention relates to a centrifugal compression wheel comprising a metal hub intended to be connected to a drive shaft and on which are fixed an inlet flange and an outlet flange between which are fixed ventilation vanes, as well as its manufacturing process.
TECHNIQUE ANTERIEUREPRIOR ART
Les roues de compression centrifuge destinées à équiper des ventilateurs ou compresseurs divers sont largement connues et se composent généralement d'une série d'aubes disposées autour d'un axe de rotation et reliées entre elles par des pièces de révolution qui peuvent avoir la forme d'un disque, d'un cône, ou d'un anneau ou qui peuvent être de toute forme toroïdale.Centrifugal compression wheels intended to equip various fans or compressors are widely known and generally consist of a series of blades arranged around an axis of rotation and connected together by parts of revolution which may have the form of 'a disc, a cone, or a ring or which can be of any toroidal shape.
Il a déjà été proposé de réaliser tout ou partie des roues de compression centrifuge à l'aide de matériaux composites, par exemple de faible densité, renforcés ou non par des fibres de renfort courtes ou longues. En effet, l'utilisation de matériaux composites intégrant des fibres de carbone, fibres de verre ou encore fibres de kevlar ou de tout autre matériau équivalent se révèle particulièrement intéressante pour les roues de compression centrifuge dans lesquelles les contraintes sont essentiellement dues aux efforts centrifuges.It has already been proposed to produce all or part of the centrifugal compression wheels using composite materials, for example of low density, reinforced or not by short or long reinforcing fibers. Indeed, the use of composite materials incorporating carbon fibers, glass fibers or even Kevlar fibers or any other equivalent material proves to be particularly advantageous for centrifugal compression wheels in which the stresses are essentially due to centrifugal forces.
Bien qu'il soit connu d'avoir recours à des matériaux composites pour réaliser tout ou partie de roues de compression centrifuge, une telle utilisation reste limitée en raison du coût des matériaux composites en eux- mêmes d'une part, et de la difficulté de réalisation des roues de ventilation à base de matériaux composites d'autre part. En effet, les techniques connues de réalisation de roues centrifuges composites font généralement intervenir une technique d'injection de résine dans un moule approprié, le moule contenant au préalable des fibres de renforts destinées à renforcer l'ensemble de la structure de la roue de compression. Or, il s'avère très délicat de maintenir les fibres de renfort dans une configuration désirée lors de l'opération d'injection, ce qui rend la technique de réalisation complexe et délicate, en multipliant les précautions de fabrication. Par ailleurs, ceci peut conduire à la réalisation de pièces dont la résistance est diminuée, notamment au niveau des aubes de ventilation.Although it is known to use composite materials to produce all or part of centrifugal compression wheels, such use remains limited due to the cost of the composite materials themselves on the one hand, and the difficulty production of ventilation wheels based on composite materials on the other hand. In fact, the known techniques for producing composite centrifugal wheels generally involve a technique of injecting resin into an appropriate mold, the mold containing beforehand reinforcing fibers intended to reinforce the entire structure of the compression wheel. . However, it proves to be very difficult to maintain the reinforcing fibers in a desired configuration during the injection operation, which makes the production technique complex and delicate, by multiplying the manufacturing precautions. Furthermore, this can lead to the production of parts whose resistance is reduced, in particular at the level of the ventilation vanes.
Un autre facteur limitant la généralisation de l'emploi des matériaux composites dans les roues de compression réside dans la nécessité de disposer d'un outillage spécifique et donc coûteux.Another factor limiting the generalization of the use of composite materials in compression wheels lies in the need for specific and therefore expensive tools.
Enfin, il s'avère que les pièces réalisées en matériaux composites, si elles peuvent être dotées d'une très grande résistance mécanique, possèdent néanmoins, à cause notamment de l'anisotropie de ces matériaux, une rigidité qui reste la plupart du temps inférieure à celle des pièces réalisées avec d'autres matériaux communément utilisés dans ce domaine, et notamment avec de l'acier. Dans le domaine des appareils de ventilation, ceci entraîne, à même vitesse de rotation, une déformation plus importante des roues composites en comparaison avec des roues similaires réalisées en acier. Il apparaît notamment dans les roues de compression centrifuge réalisées en matériau composite que la déformation obtenue peut être suffisamment importante pour entraîner le frottement du flasque avant de la roue sur le guide d'air d'entrée. Un tel phénomène est particulièrement accentué pour des roues de grande largeur (ratio largeur d'entrée des aubes / diamètre de roues supérieur à 0,2 ou même, pour des roues plus étroites tournant à haute vitesse périphérique, au-delà de 150 m/s).Finally, it turns out that the parts made of composite materials, if they can be endowed with a very high mechanical resistance, nevertheless have, due in particular to the anisotropy of these materials, a rigidity which remains mostly lower to that of parts made with other materials commonly used in this field, and in particular with steel. In the field of ventilation devices, this causes, at the same speed of rotation, a greater deformation of the composite wheels in comparison with similar wheels made of steel. It appears in particular in the centrifugal compression wheels made of composite material that the deformation obtained can be large enough to cause the friction of the front flange of the wheel on the inlet air guide. Such a phenomenon is particularly accentuated for very large wheels (ratio of blade entry width / wheel diameter greater than 0.2 or even, for narrower wheels rotating at high peripheral speed, beyond 150 m / s).
EXPOSE DE L'INVENTIONSTATEMENT OF THE INVENTION
L'objet de l'invention vise en conséquence à porter remède aux différents inconvénients énumérés précédemment et à proposer une nouvelle roue de compression centrifuge réalisée en matériau composite et possédant une résistance améliorée aux déformations.The object of the invention therefore aims to remedy the various drawbacks listed above and to propose a new centrifugal compression wheel made of composite material and having improved resistance to deformation.
Un autre objet de l'invention vise à proposer une nouvelle roue de compression centrifuge présentant une résistance améliorée à la déformation angulaire autour d'un axe perpendiculaire à l'axe de rotation.Another object of the invention is to propose a new centrifugal compression wheel having improved resistance to angular deformation around an axis perpendicular to the axis of rotation.
Un autre objet de l'invention vise à proposer une nouvelle roue de compression centrifuge de conception simplifiée.Another object of the invention is to propose a new centrifugal compression wheel of simplified design.
Un autre objet de l'invention vise à proposer une nouvelle roue de compression centrifuge dont le montage et l'assemblage sont particulièrement simplifiés.Another object of the invention is to propose a new centrifugal compression wheel whose assembly and assembly are particularly simplified.
Un autre objet de l'invention vise à proposer une nouvelle roue de compression centrifuge présentant une bonne résistance aux agressions extérieures. Un objet de l'invention vise également à proposer un nouveau procédé de fabrication d'une roue de compression centrifuge composite qui soit particulièrement simple à mettre en œuvre et à réaliser.Another object of the invention is to propose a new centrifugal compression wheel having good resistance to external aggressions. An object of the invention also aims to propose a new method of manufacturing a composite centrifugal compression wheel which is particularly simple to implement and to produce.
Les objets assignés à l'invention sont atteints à l'aide de roues de compression centrifuge comprenant un moyeu métallique destiné à être relié à un arbre d'entraînement, et sur lequel sont fixés un flasque d'entrée et un flasque de sortie entre lesquels sont fixés des aubes, caractérisées en ce qu'elles comportent un insert métallique annulaire qui est intégré dans la partie centrale de la roue à la périphérie du moyeu, et qui comprend des éléments métalliques formant l'amorce des aubes de la roue, le flasque d'entrée et le flasque de sortie ainsi que la partie restante et périphérique des aubes étant réalisés en matériau composite pour constituer la partie composite de la roue.The objects assigned to the invention are achieved by means of centrifugal compression wheels comprising a metal hub intended to be connected to a drive shaft, and on which are fixed an inlet flange and an outlet flange between which blades are fixed, characterized in that they comprise an annular metallic insert which is integrated in the central part of the wheel at the periphery of the hub, and which comprises metallic elements forming the start of the blades of the wheel, the flange inlet and outlet flange as well as the remaining and peripheral part of the blades being made of composite material to constitute the composite part of the wheel.
Les objets assignés à l'invention sont également atteints à l'aide d'un procédé de fabrication d'une roue de compression centrifuge comprenant un moyeu métallique sur lequel sont fixés un flasque d'entrée et un flasque de sortie entre lesquels sont fixées des aubes, caractérisé en ce qu'il comporte les étapes suivantes :The objects assigned to the invention are also achieved using a method of manufacturing a centrifugal compression wheel comprising a metal hub on which are fixed an inlet flange and an outlet flange between which are fixed blades, characterized in that it comprises the following stages:
a) On réalise un insert métallique qui comprend des éléments métalliques formant l'amorce des aubes de la roue ;a) A metal insert is produced which comprises metal elements forming the start of the blades of the wheel;
b) On assemble directement sur ledit insert une partie composite de la roue formée par le flasque d'entrée, le flasque de sortie et la partie restante et périphérique des aubes. DESCRIPTIF SOMMAIRE DES DESSINSb) A composite part of the impeller formed by the inlet flange, the outlet flange and the remaining and peripheral portion of the blades is assembled directly on said insert. SUMMARY OF DRAWINGS
D'autres avantages et objets de l'invention apparaîtront plus en détails à la lecture de la description qui suit, et à l'aide des dessins annexés fournis à titre purement explicatif et non limitatif, dans lesquels :Other advantages and objects of the invention will appear in more detail on reading the description which follows, and with the aid of the appended drawings provided for purely explanatory and nonlimiting purposes, in which:
- La figure 1 illustre, selon une vue en perspective, un exemple de réalisation d'une roue de compression centrifuge conforme à l'invention.- Figure 1 illustrates, in a perspective view, an embodiment of a centrifugal compression wheel according to the invention.
- La figure 2 illustre, selon une vue en coupe transversale partielle, une première variante de réalisation conforme à l'invention.- Figure 2 illustrates, in a partial cross-sectional view, a first alternative embodiment according to the invention.
- La figure 3 illustre, selon une vue en coupe transversale partielle, une autre variante de réalisation de l'invention.- Figure 3 illustrates, in a partial cross-sectional view, another alternative embodiment of the invention.
- La figure 4 illustre, selon une vue en coupe transversale partielle, une variante supplémentaire de réalisation de l'invention.- Figure 4 illustrates, in a partial cross-sectional view, an additional alternative embodiment of the invention.
- La figure 5 illustre, selon une vue transversale d'une roue de compression conforme à l'invention, un détail de réalisation d'une roue de compression comportant des flasques parallèles.- Figure 5 illustrates, in a transverse view of a compression wheel according to the invention, a detail of embodiment of a compression wheel having parallel flanges.
MEILLEURE MANIERE DE REALISER L'INVENTIONBEST WAY TO IMPLEMENT THE INVENTION
Tel qu'illustré aux figures 1 à 5, le dispositif conforme à l'invention est formé par une roue de compression centrifuge 1 comprenant un moyeu métallique 2 destiné à être relié, par tout moyen connu, à un arbre d'entraînement 3. La roue de compression centrifuge 1 est formée par deux flasques, par exemple circulaires 4, 5, pourvus d'une ouverture centrale, et définissant respectivement un flasque d'entrée 4 et un flasque de sortie 5 du flux de fluide (en général de l'air) à véhiculer et à faire transiter. De manière classique, une série d'aubes 7 est interposée entre les flasques d'entrée 4 et de sortie 5, en formant une entretoise. Les aubes 7 sont disposées de manière le plus souvent inclinée et parfois purement radiale, ceci en fonction des spécificités et du domaine d'application de la roue de compression centrifuge 1.As illustrated in Figures 1 to 5, the device according to the invention is formed by a centrifugal compression wheel 1 comprising a metal hub 2 intended to be connected, by any known means, to a drive shaft 3. The centrifugal compression wheel 1 is formed by two flanges, for example circular 4, 5, provided with a central opening, and respectively defining an inlet flange 4 and an outlet flange 5 of the fluid flow (in general of the air) to transport and transit. Conventionally, a series of vanes 7 is interposed between the inlet flanges 4 and the outlet 5, forming a spacer. The blades 7 are most often inclined and sometimes purely radial, depending on the specifics and the field of application of the centrifugal compression wheel 1.
Les flasques d'entrée 4 et de sortie 5 peuvent être plans, ou de forme conique ou toute autre surface de révolution autour de l'axe de la roue, tel qu'illustré aux figures 2 à 5, et peuvent être associés deux à deux de manière indifférente pour former une paire de flasques parallèles (figure 5) ou pour former une paire de flasques associant un flasque d'entrée 4 conique avec un flasque de sortie 5 plan (figures 2 à 4). Bien évidemment, les deux flasques 4, 5 peuvent être tous les deux également coniques sans pour autant sortir du cadre de l'invention.The inlet flanges 4 and outlet 5 can be planar, or of conical shape or any other surface of revolution around the axis of the wheel, as illustrated in FIGS. 2 to 5, and can be associated in pairs indifferently to form a pair of parallel flanges (Figure 5) or to form a pair of flanges associating a conical inlet flange 4 with an outlet flange 5 plane (Figures 2 to 4). Obviously, the two flanges 4, 5 can both be also conical without departing from the scope of the invention.
Selon une caractéristique importante de l'invention, la roue de compression centrifuge 1 comporte un insert métallique annulaire 8 qui est intégré dans la partie centrale de la roue de compression 1 à la périphérie du moyeu 2 et au voisinage de l'ouverture centrale des flasques 4, 5, et qui comprend des éléments métalliques 7A formant l'amorce des aubes de la roue, le flasque d'entrée 4 et le flasque de sortie 5 ainsi que la partie restante et périphérique 7B des aubes étant réalisés en matériau composite pour constituer la partie composite de ladite roue.According to an important characteristic of the invention, the centrifugal compression wheel 1 comprises an annular metal insert 8 which is integrated in the central part of the compression wheel 1 at the periphery of the hub 2 and in the vicinity of the central opening of the flanges 4, 5, and which comprises metallic elements 7A forming the start of the blades of the wheel, the inlet flange 4 and the outlet flange 5 as well as the remaining and peripheral part 7B of the blades being made of composite material to constitute the composite part of said wheel.
Les éléments métalliques 7A forment ainsi le bord d'attaque des aubes 7, lesquelles sont alors constituées par deux sections se prolongeant l'une dans l'autre pour constituer une aube complète, à savoir une section interne formée par des éléments métalliques 7A et une section périphérique en matériau composite 7B. Grâce à ce montage spécifique, on réduit fortement les déformations au niveau de la roue composite ce qui augmente la robustesse générale de la roue, en particulier pour des roues tournant à grande vitesse périphérique, tout en bénéficiant de la bonne résistance du matériau métallique qui compose le bord d'attaque des aubes 7. C'est en effet principalement au niveau des bords d'attaque des aubes que l'agression des particules solides ou liquides véhiculée par le fluide aspiré est maximale.The metal elements 7A thus form the leading edge of the blades 7, which then consist of two sections extending one inside the other to constitute a complete blade, namely an internal section formed by metal elements 7A and a peripheral section of composite material 7B. Thanks to this specific assembly, the deformations at the level of the composite wheel are greatly reduced, which increases the general robustness of the wheel, in particular for wheels rotating at high peripheral speed, while benefiting from the good resistance of the metallic material which composes the leading edge of the vanes 7. It is in fact mainly at the leading edges of the blades that the aggression of solid or liquid particles conveyed by the aspirated fluid is maximum.
Tel qu'illustré aux figures 2 à 5, l'insert métallique 8 est monté entre les deux flasques 4, 5 de manière à pouvoir supporter la partie composite sur toute sa largeur transversale.As illustrated in Figures 2 to 5, the metal insert 8 is mounted between the two flanges 4, 5 so as to be able to support the composite part over its entire transverse width.
Grâce à un tel montage, on réduit de manière significative les déformations angulaires autour d'un axe perpendiculaire à l'axe de rotation.Thanks to such an arrangement, the angular deformations around a axis perpendicular to the axis of rotation are significantly reduced.
Selon une première variante de réalisation illustrée à la figure 4, l'insert métallique 8 est formé par une pièce annulaire indépendante du moyeu 2 et rapportée sur ce dernier par tout moyen connu, et par exemple par soudage ou boulonnage.According to a first variant embodiment illustrated in FIG. 4, the metal insert 8 is formed by an annular piece independent of the hub 2 and attached to the latter by any known means, and for example by welding or bolting.
Selon cette variante, l'insert métallique 8 est formé par deux corps annulaires 8A, 8B ayant la forme de flasques et concentriques au moyeu 2, ces deux corps annulaires 8A, 8B étant espacés l'un de l'autre. Entre ces derniers sont disposés et interposés à intervalles réguliers les éléments métalliques 7A formant les amorces métalliques des aubes 7. Chaque corps annulaire 8A, 8B est rendu solidaire des flasques 4, 5 par l'intermédiaire d'un moyen de fixation, et par exemple par un ensemble de boulons 10 assurant d'un côté le maintien et le support entre le moyeu 2 et le flasque de sortie 5, et de l'autre côté la solidarisation entre le corps annulaire 8A et le flasque d'entrée 4. Tel qu'illustré à la figure 4, le moyeu 2 peut avantageusement comporter dans sa partie périphérique externe un méplat annulaire 11 , permettant de positionner radialement en considération de l'axe de l'arbre d'entraînement 3, le flasque de sortie 5. Tel qu'illustré à la figure 4, le méplat annulaire 11 est ménagé sur la face interne du moyeu 2 faisant face au flasque d'entrée 4.According to this variant, the metal insert 8 is formed by two annular bodies 8A, 8B having the form of flanges and concentric with the hub 2, these two annular bodies 8A, 8B being spaced from one another. Between these latter are arranged and interposed at regular intervals the metal elements 7A forming the metal primers of the blades 7. Each annular body 8A, 8B is made integral with the flanges 4, 5 by means of a fixing means, and for example by a set of bolts 10 ensuring on one side the support and the support between the hub 2 and the outlet flange 5, and on the other side the connection between the annular body 8A and the inlet flange 4. Such that illustrated in FIG. 4, the hub 2 can advantageously include in its external peripheral part an annular flat 11, for positioning radially in consideration of the axis of the drive shaft 3, the outlet flange 5. As illustrated in FIG. 4, the annular flat 11 is formed on the internal face of the hub 2 facing the inlet flange 4.
Selon une variante de réalisation, tel qu'illustré aux figures 2 et 3 par exemple, l'insert métallique 8 est une partie intégrante du moyeu 2 pour ne former qu'une seule pièce monobloc avec ce dernier. Un telle réalisation facilite bien évidemment la fabrication et le montage. Selon cette variante, le moyeu 2 comporte vers sa partie supérieure périphérique un méplat annulaire 11 ménagé sur la face externe du moyeu de manière à former un ressaut sur lequel vient reposer le flasque de sortie 5. Le flasque avant 4 est supporté par la partie avant et annulaire 12 du moyeu 2, qui comporte avantageusement, tel qu'illustré à la figure 2, un col circulaire 13 sur lequel vient reposer, de manière périphérique, le flasque d'entrée 4. De cette manière, la partie composite de la roue de compression centrifuge 1 est parfaitement supportée par le moyeu métallique 2 sur toute sa largeur. Comme dans les autres variantes, l'assemblage est effectué par un ensemble de boulons 10, ou par tout autre moyen équivalent bien connu de l'homme du métier.According to an alternative embodiment, as illustrated in FIGS. 2 and 3 for example, the metal insert 8 is an integral part of the hub 2 so as to form only one single piece with the latter. Such an embodiment obviously facilitates manufacture and assembly. According to this variant, the hub 2 comprises, towards its peripheral upper part, an annular flat 11 formed on the external face of the hub so as to form a projection on which the outlet flange 5 rests. The front flange 4 is supported by the front part and annular 12 of the hub 2, which advantageously comprises, as illustrated in FIG. 2, a circular neck 13 on which rests, peripherally, the inlet flange 4. In this way, the composite part of the wheel of centrifugal compression 1 is perfectly supported by the metal hub 2 over its entire width. As in the other variants, the assembly is carried out by a set of bolts 10, or by any other equivalent means well known to those skilled in the art.
Tel qu'illustré à la figure 3, la roue composite selon l'invention peut comporter un renfort annulaire métallique 15 monté contre la face externe de l'un des flasques, en l'occurrence dans ce cas particulier, contre le flasque d'entrée 4. Le renfort annulaire métallique 15 est assemblé avec l'insert métallique 8, dans le cas présent, avec la partie annulaire 12 du moyeu 2, à travers le flasque 4 pour supporter la partie composite. Tel qu'illustré dans cette variante, le renfort annulaire métallique 15 est monté sur et contre l'extérieur du flasque d'entrée 4, étant entendu qu'à titre de variante, et pour renforcer encore la robustesse de l'ensemble, un second renfort annulaire métallique 15 pourrait être monté contre le flasque de sortie 5.As illustrated in FIG. 3, the composite wheel according to the invention may include a metallic annular reinforcement 15 mounted against the external face of one of the flanges, in this case in this case, against the inlet flange 4. The metallic annular reinforcement 15 is assembled with the metallic insert 8, in the present case, with the annular part 12 of the hub 2, through the flange 4 to support the composite part. As illustrated in this variant, the metallic annular reinforcement 15 is mounted on and against the outside of the inlet flange 4, it being understood that as a variant, and for further strengthening the robustness of the assembly, a second metallic annular reinforcement 15 could be mounted against the outlet flange 5.
Le montage de ce renfort annulaire métallique 15 est assuré de manière classique à l'aide des boulons 10.The mounting of this metallic annular reinforcement 15 is ensured in a conventional manner using the bolts 10.
L'insert métallique 8 peut être réalisé à l'aide de techniques bien connues de l'homme du métier, et par exemple par usinage ou moulage, ou peut être composé de pièces distinctes et assemblées par soudage.The metal insert 8 can be produced using techniques well known to those skilled in the art, and for example by machining or molding, or can be composed of separate parts and assembled by welding.
La partie composite de la roue de compression selon l'invention peut être réalisée soit par moulage de matériaux composites, soit par des procédés classiques impliquant un assemblage de divers composants ou éléments composites reliés par des étapes successives d'un procédé mécanique ou d'un procédé faisant intervenir une série d'étapes de collage. Le matériau constituant la partie composite de la roue est déterminé en fonction du mode de fabrication retenu.The composite part of the compression wheel according to the invention can be produced either by molding of composite materials, or by conventional methods involving the assembly of various components or composite elements connected by successive stages of a mechanical process or a process involving a series of bonding steps. The material constituting the composite part of the wheel is determined according to the manufacturing method used.
Selon une caractéristique de l'invention, le procédé de fabrication d'une roue de compression centrifuge comprenant un moyeu métallique sur lequel est fixé un flasque d'entrée et un flasque de sortie entre lesquels sont fixées des aubes est caractérisé en ce qu'il comporte les étapes suivantes :According to a characteristic of the invention, the method of manufacturing a centrifugal compression wheel comprising a metal hub on which is fixed an inlet flange and an outlet flange between which blades are fixed is characterized in that it involves the following steps:
a) On réalise un insert métallique qui comprend des éléments métalliques formant l'amorce des aubes de la roue ;a) A metal insert is produced which comprises metal elements forming the start of the blades of the wheel;
b) On assemble directement sur ledit insert, par un procédé adapté, une partie composite de la roue formée par le flasque d'entrée, le flasque de sortie et la partie restante et périphérique des aubes. L'assemblage, c'est-à-dire la solidarisation ou jonction entre l'insert métallique et la partie composite, peut être réalisé mécaniquement à l'aide de tous moyens de fixation classiques, la partie composite étant donc réalisée séparément au cours d'une étape précédente.b) A composite part of the impeller formed by the inlet flange, the outlet flange and the remaining and peripheral portion of the blades is assembled directly on said insert, by a suitable method. The assembly, that is to say the joining or junction between the metal insert and the composite part, can be carried out mechanically using any conventional fixing means, the composite part therefore being produced separately during 'a previous step.
Avantageusement, l'étape b) d'assemblage s'effectue en même temps que l'opération de fabrication de la partie composite, en moulant directement la partie composite de la roue sur l'insert métallique. L'opération de moulage s'effectue par surmoulage d'un (ou plusieurs) matériau composite.Advantageously, step b) of assembly is carried out at the same time as the manufacturing operation of the composite part, by directly molding the composite part of the wheel on the metal insert. The molding operation is carried out by overmolding of one (or more) composite material.
Un tel procédé simplifie bien évidemment la fabrication de la roue dans la mesure où l'étape de surmoulage directe du matériau composite sur l'insert métallique simplifie grandement la fabrication.Such a process obviously simplifies the manufacture of the wheel insofar as the step of direct overmolding of the composite material on the metal insert greatly simplifies the manufacture.
La réalisation d'une roue composite associant une structure en matériau composite formant la partie périphérique de la roue à une structure métallique formant la partie centrale de la roue présente de nombreux avantages. Ainsi, la réduction des déformations, et en particulier de la déformation angulaire autour d'un axe perpendiculaire à l'axe de rotation, est assurée par le dimensionnement relatif des pièces de révolution qui rend voisine leur dilatation radiale proche sous l'effet des efforts centrifuges subis.The production of a composite wheel associating a composite material structure forming the peripheral part of the wheel with a metallic structure forming the central part of the wheel has many advantages. Thus, the reduction of the deformations, and in particular of the angular deformation around an axis perpendicular to the axis of rotation, is ensured by the relative dimensioning of the parts of revolution which makes their close radial expansion close under the effect of the forces centrifugal undergone.
L'insert métallique constitue ainsi un support des efforts centrifuges appliqués à la roue propre à réduire les déformations.The metal insert thus constitutes a support for the centrifugal forces applied to the wheel capable of reducing the deformations.
Dans le cas de roues de compression présentant des flasques avant et arrière plans et parallèles (figure 5), la roue de compression sera parfaitement symétrique, ce qui facilite sa fabrication, réduit le coût de l'outillage, et présente par ailleurs un avantage en matière de réduction des déformations. Enfin, l'intégration d'une structure métallique dans la zone d'entrée et d'aspiration de la roue composite constitue une excellente protection des parties composites de la roue contre les agents détériorant telles que les particules solides ou liquides véhiculées par le fluide aspiré.In the case of compression wheels having front and rear planes and planes and parallel flanges (Figure 5), the compression wheel will be perfectly symmetrical, which facilitates its manufacture, reduces the cost of tooling, and also has an advantage in deformation reduction material. Finally, the integration of a metal structure in the inlet and suction area of the composite wheel constitutes excellent protection of the composite parts of the wheel against deteriorating agents such as solid or liquid particles carried by the sucked fluid. .
POSSIBILITE D'APPLICATION INDUSTRIELLEPOSSIBILITY OF INDUSTRIAL APPLICATION
L'invention trouve son application industrielle dans la conception et la fabrication de ventilateurs ou compresseurs centrifuges. The invention finds its industrial application in the design and manufacture of centrifugal fans or compressors.

Claims

REVENDICATIONS
- Roue de compression centrifuge (1) comprenant un moyeu métallique (2) destiné à être relié à un arbre d'entraînement (3), et sur lequel sont fixés un flasque d'entrée (4) et un flasque de sortie (5) entre lesquels sont fixés des aubes (7, 7A, 7B), caractérisée en ce qu'elle comporte un insert métallique (8) annulaire qui est intégré dans la partie centrale de la roue (1) à la périphérie du moyeu (2), et qui comprend des éléments métalliques (7A) formant l'amorce des aubes (7) de la roue (1), le flasque d'entrée (4) et le flasque de sortie (5) ainsi que la partie restante et périphérique (7B) des aubes (7) étant réalisés en matériau composite pour constituer la partie composite de la roue.- Centrifugal compression wheel (1) comprising a metal hub (2) intended to be connected to a drive shaft (3), and on which are fixed an inlet flange (4) and an outlet flange (5) between which blades are fixed (7, 7A, 7B), characterized in that it comprises an annular metal insert (8) which is integrated in the central part of the wheel (1) at the periphery of the hub (2), and which comprises metal elements (7A) forming the start of the blades (7) of the wheel (1), the inlet flange (4) and the outlet flange (5) as well as the remaining and peripheral part (7B ) vanes (7) being made of composite material to constitute the composite part of the wheel.
- Roue selon la revendication 1 caractérisée en ce que l'insert métallique (8) est monté entre les deux flasques (4, 5) et supporte la partie composite sur toute sa largeur.- Wheel according to claim 1 characterized in that the metal insert (8) is mounted between the two flanges (4, 5) and supports the composite part over its entire width.
- Roue selon l'une des revendications 1 à 2 caractérisée en ce que l'insert métallique (8) est formé par une pièce annulaire indépendante du moyeu (2) et rapportée sur ce dernier.- Wheel according to one of claims 1 to 2 characterized in that the metal insert (8) is formed by an annular piece independent of the hub (2) and attached to the latter.
- Roue selon la revendication 3 caractérisée en ce que l'insert métallique (8) est formé par deux corps annulaires (8A, 8B) espacés l'un de l'autre et entre lesquels sont disposés les éléments métalliques (7A) formant les amorces métalliques des aubes.- Wheel according to claim 3 characterized in that the metal insert (8) is formed by two annular bodies (8A, 8B) spaced from one another and between which are arranged the metal elements (7A) forming the primers metallic blades.
- Roue selon la revendication 1 ou 2 caractérisée en ce que l'insert métallique (8) est partie intégrante du moyeu (2) pour former une seule pièce avec ce dernier. - Roue selon l'une des revendications 1 à 5 caractérisée en ce qu'elle comporte un renfort annulaire métallique (15) monté contre la face externe de l'un des flasques (4, 5) et assemblé avec l'insert métallique à travers le flasque (4, 5) pour supporter la partie composite.- Wheel according to claim 1 or 2 characterized in that the metal insert (8) is an integral part of the hub (2) to form a single piece with the latter. - Wheel according to one of claims 1 to 5 characterized in that it comprises a metallic annular reinforcement (15) mounted against the external face of one of the flanges (4, 5) and assembled with the metallic insert through the flange (4, 5) to support the composite part.
- Roue selon la revendication 6 caractérisée en ce que le renfort annulaire (15) est monté sur et contre l'extérieur du flasque d'entrée (4).- Wheel according to claim 6 characterized in that the annular reinforcement (15) is mounted on and against the outside of the inlet flange (4).
- Procédé de fabrication d'une roue de compression centrifuge comprenant un moyeu métallique sur lequel sont fixés un flasque d'entrée et un flasque de sortie entre lesquels sont fixées des aubes, caractérisé en ce qu'il comporte les étapes suivantes :- Method for manufacturing a centrifugal compression wheel comprising a metal hub on which are fixed an inlet flange and an outlet flange between which blades are fixed, characterized in that it comprises the following steps:
a) On réalise un insert métallique qui comprend des éléments métalliques formant l'amorce des aubes de la roue ; b) On assemble directement sur ledit insert une partie composite de la roue formée par le flasque d'entrée, le flasque de sortie et la partie restante et périphérique des aubes.a) A metal insert is produced which comprises metal elements forming the start of the blades of the wheel; b) A composite part of the impeller formed by the inlet flange, the outlet flange and the remaining and peripheral portion of the blades is assembled directly on said insert.
- Procédé selon la revendication 8 caractérisé en ce que l'étape b) d'assemblage s'effectue en moulant directement la partie composite de la roue sur l'insert métallique. - Method according to claim 8 characterized in that step b) of assembly is carried out by directly molding the composite part of the wheel on the metal insert.
EP02800630A 2001-10-05 2002-10-03 Centrifugal wheel Expired - Lifetime EP1432915B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0113013 2001-10-05
FR0113013A FR2830579B1 (en) 2001-10-05 2001-10-05 CENTRIFUGAL COMPRESSION WHEEL COMBINING A COMPOSITE MATERIAL STRUCTURE AND A METAL STRUCTURE AND MANUFACTURING METHOD
PCT/FR2002/003378 WO2003031824A1 (en) 2001-10-05 2002-10-03 Centrifugal wheel

Publications (2)

Publication Number Publication Date
EP1432915A1 true EP1432915A1 (en) 2004-06-30
EP1432915B1 EP1432915B1 (en) 2006-06-28

Family

ID=8868108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02800630A Expired - Lifetime EP1432915B1 (en) 2001-10-05 2002-10-03 Centrifugal wheel

Country Status (11)

Country Link
US (1) US6976828B2 (en)
EP (1) EP1432915B1 (en)
JP (1) JP4041463B2 (en)
AT (1) ATE331891T1 (en)
AU (1) AU2002362790B2 (en)
BR (1) BR0206151B1 (en)
DE (1) DE60212864D1 (en)
FR (1) FR2830579B1 (en)
NZ (1) NZ529455A (en)
WO (1) WO2003031824A1 (en)
ZA (1) ZA200305221B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1455094A1 (en) * 2003-03-04 2004-09-08 Ziehl-Abegg AG Radial flow impeller
KR101298602B1 (en) * 2005-09-27 2013-08-26 우모에 만달 에이에스 Centrifugal fan
FR2942267B1 (en) * 2009-02-19 2011-05-06 Turbomeca EROSION LAMP FOR COMPRESSOR WHEEL
IT1394295B1 (en) 2009-05-08 2012-06-06 Nuovo Pignone Spa CENTRIFUGAL IMPELLER OF THE CLOSED TYPE FOR TURBOMACCHINE, COMPONENT FOR SUCH A IMPELLER, TURBOMACCHINA PROVIDED WITH THAT IMPELLER AND METHOD OF REALIZING SUCH A IMPELLER
IT1397058B1 (en) 2009-11-23 2012-12-28 Nuovo Pignone Spa CENTRIFUGAL IMPELLER MOLD, MOLD INSERTS AND METHOD TO BUILD A CENTRIFUGAL IMPELLER
IT1397057B1 (en) 2009-11-23 2012-12-28 Nuovo Pignone Spa CENTRIFUGAL AND TURBOMACHINE IMPELLER
FI20105048L (en) * 2010-01-21 2011-07-22 Runtech Systems Oy METHOD FOR MANUFACTURING A RADIAL COMPRESSOR IMPELLER
ITCO20110064A1 (en) 2011-12-14 2013-06-15 Nuovo Pignone Spa ROTARY MACHINE INCLUDING A ROTOR WITH A COMPOSITE IMPELLER AND A METAL SHAFT
ITCO20130067A1 (en) 2013-12-17 2015-06-18 Nuovo Pignone Srl IMPELLER WITH PROTECTION ELEMENTS AND CENTRIFUGAL COMPRESSOR
CN104806565A (en) * 2014-01-23 2015-07-29 德昌电机(深圳)有限公司 Centrifugal impeller, fan and household device
CN106122084B (en) * 2016-08-29 2019-04-23 重庆水泵厂有限责任公司 A kind of low specific speed impeller structure and its processing method
US10393134B2 (en) 2017-08-04 2019-08-27 Borgwarner Inc. Polymeric compressor wheel with metal sleeve
CN113653670A (en) * 2021-09-06 2021-11-16 珠海格力节能环保制冷技术研究中心有限公司 Combined impeller, centrifugal compressor and air conditioner
WO2023237269A1 (en) * 2022-06-07 2023-12-14 Siemens Mobility GmbH Fan for a traction motor of a rail vehicle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1427391A (en) * 1921-03-07 1922-08-29 New Zealand Flusher Company Lt Construction of rotary fan or turbine wheel
US2401206A (en) * 1942-08-08 1946-05-28 Bbc Brown Boveri & Cie Centrifugal compressor
CH416921A (en) * 1964-07-07 1966-07-15 Patege Ag Metal fan wheel
DE2527498A1 (en) * 1975-06-20 1976-12-30 Daimler Benz Ag RADIAL TURBINE WHEEL FOR A GAS TURBINE
FR2504209A1 (en) * 1981-04-21 1982-10-22 Hunsinger Ewald Radial turbine impeller - has metallic hub and inlet vanes with impeller vanes in oriented synthetic fibre
DE3520218A1 (en) * 1984-06-08 1985-12-12 Hitachi, Ltd., Tokio/Tokyo IMPELLER FOR A RADIAL BLOWER
US4958987A (en) * 1989-07-20 1990-09-25 Precision Cutters, Inc. Materials handling fan impeller
FR2776030B1 (en) * 1998-03-11 2000-07-13 Abb Solyvent Ventec CENTRIFUGAL VENTILATION WHEEL IN COMPOSITE MATERIALS
WO1999058857A1 (en) * 1998-05-13 1999-11-18 Matsushita Electric Industrial Co., Ltd. Electric blower and vacuum cleaner using it

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03031824A1 *

Also Published As

Publication number Publication date
FR2830579A1 (en) 2003-04-11
FR2830579B1 (en) 2004-01-23
AU2002362790B2 (en) 2008-07-10
ZA200305221B (en) 2005-03-30
WO2003031824A1 (en) 2003-04-17
BR0206151A (en) 2005-01-11
US6976828B2 (en) 2005-12-20
JP4041463B2 (en) 2008-01-30
US20040241000A1 (en) 2004-12-02
ATE331891T1 (en) 2006-07-15
DE60212864D1 (en) 2006-08-10
JP2005504929A (en) 2005-02-17
NZ529455A (en) 2005-09-30
BR0206151B1 (en) 2011-02-08
EP1432915B1 (en) 2006-06-28

Similar Documents

Publication Publication Date Title
EP1432915B1 (en) Centrifugal wheel
WO1999046511A1 (en) Composite material centrifugal wheel
FR2779791A1 (en) IMPROVED BLADE WHEEL
FR2956602A1 (en) PROCESS FOR MAKING A TURBOMACHINE METAL TURBINE REINFORCEMENT
FR2746709A1 (en) WHEEL FOR MOTOR VEHICLES AND METHOD FOR MANUFACTURING SUCH A WHEEL
EP2661542B1 (en) Gas-turbine rotor disk with vibration damper
EP2811121A1 (en) Composite casing for axial turbomachine compressor with metal flange
FR3063776A1 (en) BEARING ARRANGEMENT FOR A DRIVE SHAFT OF A TURBOMACHINE, AND A TURBOMACHINE HAVING SUCH A BEARING ARRANGEMENT
EP3011185B1 (en) Centrifugal rotor
FR2770878A1 (en) FAN WHEEL
EP4095357A1 (en) Device for producing a fan or compressor for the aeronautical industry
EP3607211B1 (en) Reinforced axial diffuser
FR3039855A1 (en) DAWN COMPRISING A DUST BODY OF COMPOSITE MATERIAL AND AN ATTACK SHIELD
CA2201523A1 (en) Automobile wheel
FR3006011A1 (en) PROCESS FOR MANUFACTURING A ROTATING PART OF A HYDRAULIC MACHINE, ROTATING PART MANUFACTURED ACCORDING TO THIS METHOD, HYDRAULIC MACHINE AND ENERGY CONVERSION PLANT
FR2645586A1 (en) Radial blower
FR2469610A1 (en) Fan impeller mfr. - by attaching bladed wheel to biaxially deformed tubular hub
EP3394396A1 (en) Leading edge shield
FR2952964A1 (en) Mobile wheel for low pressure gas turbine of aeronautical turboshaft engine, has maintenance shroud assembled on metal disc and comprising annular support that is radially supported under flange of wedges
FR3093534A1 (en) Aeronautical turbomachine fan platform
FR2973845A1 (en) Casing for blower fan in engine of aircraft, has internal face partially covered with protective film using adhesive and polymerization process, where protective film is made of polyurethane and comprises set of distinct fragments
EP2762728A2 (en) Radial fan impeller and its fabrication method
FR2730015A1 (en) CENTRIFUGAL PROPELLER WHEEL
EP2516865A1 (en) Fan impeller and associated fan shroud, in particular for a motor vehicle
FR3088092A1 (en) TURBOCHARGER COMPRISING A GAS GUIDANCE ROUTE PARTIALLY FORMED BY A TUBULAR CONNECTING ELEMENT

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20031030

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GODICHON, ALAIN, FRANEOIS, EMILE

Inventor name: GUILLEMIN, SYLVAIN, GEORGES, RAYMOND

Inventor name: GRASSI, PIERRE, JACQUES, FRANEOIS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060628

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REF Corresponds to:

Ref document number: 60212864

Country of ref document: DE

Date of ref document: 20060810

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061009

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061031

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061128

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20060628

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070329

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070629

REG Reference to a national code

Ref country code: FR

Ref legal event code: RN

REG Reference to a national code

Ref country code: FR

Ref legal event code: FC

BERE Be: lapsed

Owner name: FLAKT SOLYVENT-VENTEC

Effective date: 20061031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060929

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: FR

Effective date: 20071010

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: FR

Effective date: 20071010

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061003

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061031

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Owner name: HOWDEN SOLYVENT-VENTEC

Effective date: 20160720

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20211027

Year of fee payment: 20

Ref country code: FI

Payment date: 20211027

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20211025

Year of fee payment: 20

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230531