EP3473861B1 - Roue porteuse et son procédé de fabrication - Google Patents

Roue porteuse et son procédé de fabrication Download PDF

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Publication number
EP3473861B1
EP3473861B1 EP18200615.5A EP18200615A EP3473861B1 EP 3473861 B1 EP3473861 B1 EP 3473861B1 EP 18200615 A EP18200615 A EP 18200615A EP 3473861 B1 EP3473861 B1 EP 3473861B1
Authority
EP
European Patent Office
Prior art keywords
impeller
base body
blades
main
hub
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.)
Active
Application number
EP18200615.5A
Other languages
German (de)
English (en)
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EP3473861A1 (fr
EP3473861C0 (fr
Inventor
Hans-Joachim Ring
Philipp Kellner
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.)
Piller Blowers and Compressors GmbH
Original Assignee
Piller Blowers and Compressors GmbH
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Filing date
Publication date
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Publication of EP3473861A1 publication Critical patent/EP3473861A1/fr
Application granted granted Critical
Publication of EP3473861B1 publication Critical patent/EP3473861B1/fr
Publication of EP3473861C0 publication Critical patent/EP3473861C0/fr
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Anticipated expiration legal-status Critical

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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
    • F04D29/26—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
    • 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
    • F04D29/30—Vanes
    • 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
    • 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
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • 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
    • 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
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/51—Building or constructing in particular ways in a modular way, e.g. using several identical or complementary parts or features
    • 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
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/53—Building or constructing in particular ways by integrally manufacturing a component, e.g. by milling from a billet or one piece construction
    • 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
    • F05D2300/17—Alloys
    • F05D2300/171—Steel alloys
    • 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
    • F05D2300/17—Alloys
    • F05D2300/174—Titanium alloys, e.g. TiAl

Definitions

  • the invention relates to an impeller for a fan or a compressor and a method for producing such an impeller for a fan or a compressor.
  • Such wheels can be manufactured in a variety of ways.
  • WO 2006/133363 A2 an impeller unit comprising a first main body and a second main body, the first main body forming at least a substantial part of an impeller disk and an impeller cover as well as a plurality of impeller blades and the second main body forms a remaining part of the impeller disk or the impeller cover.
  • GB632,475 discloses a turbine wheel comprising a plurality of individual parts, including impeller blades, an upper envelope section and a lower envelope section, a flat inlet shroud, a cylindrical outlet shroud and a central safety ring, all of which individual components are welded together.
  • Another example of an impeller is in CN1205399 described.
  • the invention is therefore based on the object of creating an impeller with a simple structure, which can in particular be produced using simple and cost-effective process steps.
  • an impeller of the type described at the outset in that the impeller has an impeller base body which comprises an impeller cover and impeller blades integrally formed on the impeller cover and that an impeller base is held on the impeller base body by welding it to the impeller base body and that the Impeller base is formed from several base segments welded to the impeller base body.
  • the impeller base body comprises impeller blades which extend between the impeller cover and the impeller base up to outlet openings of the impeller.
  • the impeller base body comprises a hub, which is in particular integrally formed on it.
  • the impeller base body has impeller main blades as impeller blades, which are connected to the hub in particular in the area of their inlet-side ends and extend from these to the outlet-side ends.
  • the impeller base body has impeller intermediate blades as impeller blades, which lie between the main impeller blades and extend from inlet-side ends arranged at a radial distance from the hub to outlet-side ends.
  • the impeller base body has an inlet nozzle arranged on the impeller cover, through which the medium to be conveyed enters the impeller.
  • the inlet nozzle could, for example, be welded to the impeller cover.
  • the inlet nozzle is integrally formed on the impeller cover.
  • each of the floor segments is formed by a blank part made of flat material, which has main blade connection contours adjacent to the main impeller blades in comb areas.
  • each base segment is welded to the comb region of the impeller main blades along the main blade connection contours.
  • each of the floor segments is formed by a blank part made of flat material, which has main blade connection contours adjacent to the main impeller blades in comb areas and has intermediate blade connection contours adjacent to a comb area of the at least one intermediate impeller blade.
  • each base segment is welded along the main blade connection contours to the comb region of the impeller main blades and along the intermediate blade connection contours to the comb region of the at least one intermediate impeller blade.
  • the base segment is welded along a hub connection contour to a circumferential region of the hub extending between the main impeller blades.
  • the base segments are welded by an I-seam to the comb areas of the main impeller blades and, if necessary, to the comb area of the at least one intermediate impeller blade.
  • the impeller has a support disk that stabilizes the impeller base in the area around the hub and, in particular, additionally stabilizes the connection between the base segments and the hub.
  • Such a support disk is preferably placed on the impeller base after the base segments have been welded to the impeller base body and, in particular, is connected to both the hub and the impeller base by welding in order, on the one hand, to keep the material thickness of the impeller base as low as possible and, on the other hand, to additionally maintain the connection to the hub to improve.
  • the impeller base body has a stiffening ring formed on an outlet-side edge region of the impeller cover.
  • the stiffening ring could be connected to the impeller base body, for example by welding.
  • stiffening ring is integrally formed on the impeller base body.
  • the invention also relates to a method for producing an impeller for a fan or a compressor, in which, according to the invention, an impeller base body, comprising an impeller cover and impeller blades integrally formed on the impeller cover, is produced by milling a blank and, according to the invention, an impeller base is formed on the impeller base body Welding several floor segments to the impeller base body is fixed.
  • the impeller base body can be produced by milling and, in particular, there is easy access to the interior of the impeller, which is still open at the bottom, and that, on the other hand, the impeller base can be produced in a simple manner by welding the base segments .
  • the base segments are welded one after the other to the impeller base body, so that a simple manufacturing process for the impeller base can be implemented using simple means.
  • the impeller main blades are formed onto the impeller base body by milling, the inlet-side ends of which attach in particular to a hub of the impeller base body and which extend to the outlet-side ends.
  • intermediate impeller blades are formed on the impeller base body by milling, which extend from an inlet end arranged at a distance from the hub to an outlet end, the outer ends preferably lying close to the outer contours of the impeller cover and the impeller bottom .
  • a particularly favorable solution provides for the base segments to be inserted between impeller main blades which are adjacent to one another or which follow one another in a circumferential direction.
  • a particularly favorable solution in this regard provides that the base segments are welded to comb areas of the main impeller blade.
  • the method according to the invention is carried out in such a way that, starting with a base segment, the base segments are welded to the impeller base body.
  • the floor segments are fixed by welding points before they are welded to the comb regions of the main impeller blades.
  • the base segments are welded to the impeller main blades with a continuous weld seam along their main blade connection contours.
  • a particularly favorable solution provides that the base segments are inserted between adjacent main impeller blades and at least one intermediate impeller blade located between these main impeller blades.
  • a particularly favorable solution in this regard provides that the base segments are welded to comb regions of the main impeller blade and a comb region of the at least one intermediate impeller blade located between the main impeller blades.
  • the method according to the invention is carried out in such a way that, starting with a base segment, the base segments are welded to the impeller base body.
  • the base segments are fixed by welding points before they are welded to the comb regions of the main impeller blades and the intermediate impeller blades.
  • the base segments are welded with a continuous weld seam along their main blade connection contours to the main impeller blades and their intermediate blade connection contours to the respective intermediate impeller blade.
  • a particularly advantageous connection between the base segments and the comb areas of the main impeller blades and the intermediate impeller blades provides that the base segments are welded to the impeller base body with the comb areas of the main impeller blades and, if applicable, the intermediate impeller blades by I-seams.
  • Welding is preferably carried out by laser beam welding or electron beam welding.
  • the floor segments In order to produce the floor segments precisely, it is preferably provided that the floor segments must be produced from a flat material by wire erosion.
  • the impeller base body with the welded-in base segments is machined by turning an outside of the impeller base to achieve a flat surface, so that all material accumulations or other inaccuracies in the area that occur as a result of the welding Floor segments can be removed.
  • a support disk is placed on the impeller base and connected to it.
  • the support disk could, for example, be glued to the impeller base.
  • the support disk is welded to the impeller base with its outer contour, in particular with a fillet weld, so that a long-term stable connection is created between the support disc and the impeller base.
  • the support disk is connected to the hub with its inner contour surrounding the hub, in particular by means of an I-seam.
  • An advantageous solution provides that an inlet nozzle is arranged on the impeller base body in the area of the impeller cover.
  • Such an inlet nozzle could in principle be connected to the impeller base body by a welded connection.
  • the inlet nozzle is shaped for the impeller base body during the milling process of the blank and is thus connected in one piece to the impeller base body.
  • a hub of the impeller is arranged on the impeller base body.
  • Such a hub could also be connected to the impeller base body, for example by welding.
  • the hub is formed for the impeller base body during the milling process of the blank, so that the hub is also arranged in one piece on the impeller base body.
  • a cover stiffening ring is arranged in an outlet-side region of the impeller cover.
  • This cover stiffening ring could also be connected to the impeller base body by welding it.
  • stiffening ring is formed in the course of milling the blank for the impeller base body.
  • Impeller shown as a whole and designated 10 for a fan or compressor comprises an impeller cover 12 and an impeller base 14 opposite the impeller cover 12, between which there is an impeller interior 16, into which a gaseous medium enters through an inlet nozzle 22 formed on the impeller cover 12, is accelerated radially by impeller blades 24 arranged between the impeller cover 12 and the impeller base 14 and impeller channels formed between the impeller blades 24 and exits through radially outer outlet openings 26, the outlet openings 26 lying between an outer contour 32 of the impeller cover 12 and an outer contour 34 of the impeller base 14 , each of which runs at approximately the same radial distance from an axis of rotation 36 of the impeller 10.
  • the impeller 10 is assembled from an in Fig. 2 shown impeller base body 42, which is produced by milling from an oversized blank and includes the inlet nozzle 22 and the impeller cover 12, which extends from the inlet nozzle 22 radially outwards to the axis of rotation 36 up to the outer contour 32 ( Fig. 3 ).
  • a hub 44 is integrally formed on the impeller cover 12 and the inlet nozzle 22 opposite the inlet nozzle 22 and formed by milling the blank ( Fig. 2 , 4 ).
  • a connection between the impeller cover 12 and the hub 44 takes place in particular by impeller blades 24 designed as main impeller blades 46, which are also integrally formed on the impeller cover 12 and are formed by milling the blank ( Fig. 4 ).
  • impeller main blades 46 then run on an inside 48 of the impeller cover from the inner regions 52 facing the inlet nozzle 22 and connecting the impeller cover 12 to the hub 44, the inlet-side ends 54 facing the inlet nozzle 22 ( Fig. 2 ), radially and azimuthally along the inside 48 of the impeller cover 12 up to outlet-side ends 56 which end close to or at a short distance from the outer contour 32 of the impeller cover.
  • the impeller main blades 46 are also integrally formed on the impeller cover 12 and are therefore part of the impeller base body 42.
  • the impeller base body 42 is preferably also provided with a stiffening ring 62 that stabilizes a transition between them and is also provided with a radially outer cover stiffening ring 64 to stabilize the impeller cover 12, which is located over one of the inside 48 opposite outside 68 of the impeller cover 12 rises ( Fig. 2 , 3 ).
  • two types of impeller blades 24 are preferably provided in the illustrated embodiment, namely between the impeller main blades 46, the inner regions 52 of which are connected to the inlet nozzle 22, the impeller cover 12 and the hub 44 are and which extend to their outlet ends 56 near the outer contour 32 of the impeller cover 12, intermediate impeller blades 72 are arranged, the inlet ends 74 of which are arranged at a distance from the hub 44 and the outlet ends 76 of which are also close to the outer contour 32 of the impeller cover 12.
  • the intermediate impeller blades 72 are also integrally formed on the impeller cover 12 and rise from the inside 48, as in Fig. 4 shown, whereby the intermediate impeller blades 72 are also produced by milling a blank.
  • bottom segments 82 are provided, which are cut out of a piece of flat material, for example by wire erosion, and have a circumferential outer contour 84 forming an arcuate portion of the outer contour 34 of the impeller bottom 14, opposing main blade connection contours 86 and 88 running from the circumferential outer contour 84 to the hub 44, and a have hub connection contour 92 lying between the main blade connection contours 86 and 88.
  • main blade connection contours 86 and 88 there is a U-shaped groove extending radially inward starting from the circumferential outer contour 84, the U-shaped groove edges of which form intermediate blade connection contours 96, 97, 98.
  • intermediate blade connection contours 96 and 98 also lie on upper edges 112 of the intermediate impeller blades 72 adjacent comb regions 114, namely their longitudinal sides 116 and 118 facing away from one another.
  • the bottom segments 82 are preferably inserted in such a way that an outside 122 of the bottom segments 82 facing away from the impeller interior 16 is essentially aligned with the upper edges 102 and 112 of the impeller main blades 46 and the impeller intermediate blades 72.
  • the hub connection contour 92 rests on a peripheral side 124 of the hub 44.
  • the respective bottom segment 82 is fixed in the area of the main blade outer contours 86 and 88 and the intermediate blade connection contours 96, 97 and 98 first by welding points and then continuous welding takes place along the main blade outer contours 86 and 88 and the intermediate blade connection contours 96, 97 and 98 with the respective long sides 106 and 108 as well as 116 and 118 of the respective comb areas 104 and 114 as well as the hub connection contour 92 with the peripheral side 124 of the hub 44 by so-called I-weld seams 126 ( Fig. 7 , 8th ).
  • the floor segments 82 are preferably inserted sequentially until all floor segments 82 are inserted.
  • the unit consisting of the impeller base body 42 and the welded-in base segments 82 is over-twisted in the area of the outside 122 of the base segments 82 to produce a flat surface 132, which extends over the outer sides 122 of the base segments 82 and the upper edges 102 and 112 of the impeller main blades 46 and the intermediate impeller blades 72 and a support surface 134 of the hub 44, as in Fig. 10 shown, and then done on this plane surface, as in Fig. 11 and Fig.
  • a placement of a support disk 142 which rests both on the support surface 134 of the hub 44 and on the outer sides 122 of the bottom segments 82 and possibly the upper edges 102 and 112 of the main impeller blades 46 and the intermediate impeller blades 72 and is flush with them.
  • the support disk 142 extends from an annular surface 144 that delimits the bearing surface 134 of the hub 44 radially on the inside in the radial direction to the axis of rotation 36 into an annular area 146 of the outside 122 of the impeller base 14, the annular area 146 being 0.5 times the Radial distance of the outer contour 34 of the impeller base 14 extends up to 0.7 times the same.
  • the support disk 142 preferably has an outer contour 148, which is welded to the impeller base 14 by means of a fillet weld 152.
  • an inner contour 154 of the support disk 142 is welded to the annular surface 144, preferably also by means of an I-seam.
  • the impeller base body 42 as well as the base segments 82 are preferably made of high-strength and corrosion-resistant metallic materials, for example grade 5 titanium and/or high-strength, rust-free martensitic stainless steels.
  • the welding of the floor segments 82 is carried out in particular by a welding process starting from the outside of the floor segments 82, so that there is no need for welding in the impeller interior, preferably by laser beam welding without additional material or electron beam welding, which is possible because the floor segments 82 have a small gap tolerance, for example smaller than 0.2 mm, so that I-seams made in a simple manner from the outside 122 of the base segments 82 along the main blade connection contours 86 and 88 and the intermediate blade connection contours 96 and 98 as well as the hub connection contour 92 and the peripheral side 124 of the Hub 44 can be realized.
  • a heat treatment is carried out, whereby residual welding stresses are reduced and thus defined mechanical properties are achieved, especially if the material for producing the impeller base body 42 and the base segments 82 is a rust-free martensitic stainless steel.
  • the impeller is pickled to remove welding tarnish and scale resulting from heat treatment and to improve corrosion resistance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (17)

  1. Roue (10) pour un ventilateur ou un compresseur, la roue (10) présentant un corps de base de roue (42) qui comprend un couvercle de roue (12) et des aubes de roue (24) formées d'un seul tenant sur le couvercle de roue (12), un fond de roue (14) étant maintenu sur le corps de base de roue (42) par soudage de celui-ci avec le corps de base de roue (42), caractérisé en ce que le fond de roue (14) est formé de plusieurs segments de fond (82) soudés au corps de base de roue (42).
  2. Roue selon la revendication 1, caractérisée en ce que le corps de base de la roue (42) comprend des aubes de roue (24) qui s'étendent entre le couvercle de roue (12) et le fond de roue (14) jusqu'à des ouvertures de sortie (26) de la roue (10).
  3. Roue selon la revendication 1 ou 2, caractérisée en ce que le corps de base de roue (42) comprend un moyeu (44) qui est formé en particulier d'une seule pièce sur celui-ci, en ce que le corps de base de roue (42) présente en particulier comme aubes de roue (24) des aubes principales de roue (46) qui sont reliées en particulier dans la zone de leurs extrémités côté entrée au moyeu (44) et qui s'étendent à partir de celles-ci jusqu'aux extrémités côté sortie (56), en ce que, en particulier, le corps de base de roue (42) présente, en tant qu'aubes de roue (24), des aubes intermédiaires de roue (72) qui se trouvent entre les aubes principales de roue (46) et s'étendent, en partant d'extrémités côté entrée (74) disposées à une distance radiale du moyeu (44), jusqu'à des extrémités côté sortie (76).
  4. Roue selon l'une des revendications précédentes, caractérisée en ce que le corps de base de roue (42) présente une buse d'entrée (22) disposée sur le couvercle de roue (12), en ce que notamment la buse d'entrée (22) est formée d'un seul tenant sur le couvercle de roue 12).
  5. Roue selon l'une des revendications précédentes, caractérisée en ce que les segments de fond (82) formant le fond de roue (14) s'étendent respectivement entre deux aubes principales de roue (46) voisines, en ce que notamment chacun des segments de fond (82) est formé par une pièce découpée en matériau plat, qui présente des contours de raccordement d'aube principale (86, 88) adjacents aux aubes principales de roue (46) dans des zones de crête (104), en ce que notamment chaque segment de fond (82) est soudé le long de contours de raccordement d'aube principale (86, 88) avec la zone de crête (104) des aubes principales de roue (46).
  6. Roue selon l'une des revendications précédentes, caractérisée en ce que les segments de fond (82) formant le fond de roue (14) s'étendent chacun entre deux aubes principales de roue (46) voisines l'une de l'autre et l'au moins une aube intermédiaire de roue (72) située entre les aubes principales de roue (46).
  7. Roue selon l'une des revendications précédentes, caractérisée en ce que chacun des segments de fond (82) est formé par une pièce découpée en matériau plat qui présente des contours de raccordement d'aube principale (86, 88) adjacents aux aubes principales de roue (46) dans des zones de crête (104) et des contours de raccordement d'aube intermédiaire (96, 98) adjacents à une zone de crête (114) de l'au moins une aube intermédiaire de roue (72), en ce que, en particulier, chaque segment de fond (82) est soudé le long de contours de raccordement d'aube principale (86, 88) à la zone d'arête (104) des aubes principales de roue (46) et le long des contours de raccordement d'aube intermédiaire (96, 98) à la zone d'arête (114) de l'au moins une aube intermédiaire de roue (72), et/ou en ce que, en particulier, le segment de fond (82) est soudé le long d'un contour de raccordement de moyeu (92) à une zone périphérique (124) du moyeu (44) s'étendant entre les aubes principales de roue (46).
  8. Roue selon l'une des revendications 5 à 7, caractérisée en ce que les segments de fond (82) sont soudés par une soudure en I aux zones de crête (104) des aubes principales de roue (46) et de l'au moins une aube intermédiaire de roue (72).
  9. Roue selon l'une des revendications 3 à 8, caractérisée en ce que la roue (10) présente un disque d'appui (142) stabilisant le fond de la roue (14) dans la zone autour du moyeu (44).
  10. Roue selon l'une des revendications précédentes, caractérisée en ce que le corps de base de roue (42) présente une bague de renforcement (64) formée sur une zone de bord côté sortie du couvercle de roue (12), en ce que notamment la bague de renforcement (64) est formée d'un seul tenant sur le corps de base de roue (42).
  11. Procédé de fabrication d'une roue (10) pour un ventilateur ou un compresseur, caractérisé en ce qu'un corps de base de roue (42), comprenant un couvercle de roue (12) et des aubes de roue (24) formées d'un seul tenant sur le couvercle de roue (12), est fabriqué par un usinage par fraisage d'une ébauche et en ce qu'un fond de roue( 14) est fixé sur le corps de base de roue (42) par soudage de plusieurs segments de fond (82) avec le corps de base de roue (42).
  12. Procédé selon la revendication 11, caractérisé en ce que des aubes principales de roue (46) sont formées par fraisage sur le corps de base de roue (42), dont les extrémités côté entrée (54) se raccordent en particulier à un moyeu (44) du corps de base de roue (42) et qui s'étendent jusqu'aux extrémités côté sortie (56), en ce que des aubes intermédiaires de roue (72) sont formées en particulier sur le corps de base de roue (42) par fraisage, lesquelles s'étendent depuis une extrémité côté entrée (74) disposée à distance du moyeu (44) jusqu'à une extrémité côté sortie (76).
  13. Procédé selon l'une des revendications 11 ou 12, caractérisé en ce que les segments de fond (82) sont insérés entre des aubes principales de roue (46) voisines les unes des autres, en ce que notamment les segments de fond (82) sont soudés à des zones de crête (104) des aubes principales de roue (46), en ce que notamment en commençant par un segment de fond (82), les segments de fond (82) sont soudés au corps de base de roue (42), et/ou en ce que, en particulier, les segments de fond (82) sont fixés par des points d'agrafage de soudage avant un soudage de ceux-ci sur les zones de crête (104) des aubes principales de roue (46), en ce que, en particulier, les segments de fond (82) sont soudés aux aubes principales de roue (46) avec un cordon de soudure continu le long de leurs contours de raccordement d'aube principale (86, 88).
  14. Procédé selon l'une quelconque des revendications 11 à 13, caractérisé en ce que les segments de fond (82) sont insérés entre des aubes principales de roue (46) adjacentes les unes aux autres et au moins une aube intermédiaire de roue (72) située entre ces aubes principales de roue (46), en ce que, en particulier, les segments de fond (82) sont soudés à des zones de crête (104) des aubes principales de roue (46) et à une zone de crête (114) de l'au moins une aube intermédiaire de roue (72) située entre les aubes principales de roue (46), en ce que, en particulier, en commençant par un segment de fond (82), les segments de fond (82) sont soudés au corps de base de roue (42), et/ou en ce que, en particulier, les segments de fond (82) sont fixés par des points de soudure avant d'être soudés aux zones de crête des aubes principales (46) et de l'aube intermédiaire (72) de la roue, et/ou en ce que, en particulier, les segments de fond (82) sont reliés aux aubes principales (46) de la roue et aux contours de raccordement des aubes intermédiaires (96, 88) par un cordon de soudure continu le long de leurs contours de raccordement des aubes principales (86, 88), 98) avec l'aube intermédiaire (72), et/ou en ce que notamment les segments de fond (82) sont soudés avec les zones de crête (104, 114) des aubes principales de roue (46) et éventuellement de l'aube intermédiaire de roue (72) par des soudures en I avec le corps de base de roue (42), et/ou en ce que notamment les segments de fond (82) sont fabriqués par électro-érosion à fil à partir d'un matériau plat.
  15. Procédé selon l'une quelconque des revendications 11 à 14, caractérisé en ce que le corps de base de roue (42) avec les segments de fond (82) soudés est usiné par retournement d'une face extérieure (122) du fond de roue (14) pour obtenir une surface plane (132).
  16. Procédé selon l'une des revendications 11 à 15, caractérisé en ce qu'un disque d'appui (142) est posé sur le fond de roue (14) et relié à celui-ci, en ce que notamment le disque d'appui (142) est relié au fond de roue (14) dans son contour extérieur (148), et/ou en ce que notamment le disque d'appui (142) est relié au moyeu (44) par son contour intérieur entourant le moyeu (44).
  17. Procédé selon l'une des revendications 11 à 16, caractérisé en ce qu'une buse d'entrée (22) est disposée sur le corps de base de roue (42) dans la zone du couvercle de roue (12), en ce que notamment la buse d'entrée (22) est formée au cours de l'usinage par fraisage de l'ébauche pour le corps de base de roue (42) et/ou en ce que notamment un moyeu (44) de la roue (10) est disposé sur le corps de base de roue (42), et en ce que, en particulier, le moyeu (44) est formé au cours de l'usinage par fraisage de l'ébauche pour le corps de base de roue (42), et/ou en ce que, en particulier, un anneau de renforcement de couvercle (64) est disposé sur le corps de base de roue dans une zone côté sortie du couvercle de roue (12), en ce que, en particulier, l'anneau de renforcement de couvercle (64) est formé au cours de l'usinage par fraisage de l'ébauche pour le corps de base de roue (42).
EP18200615.5A 2017-10-23 2018-10-16 Roue porteuse et son procédé de fabrication Active EP3473861B1 (fr)

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DE102017124746.7A DE102017124746B3 (de) 2017-10-23 2017-10-23 Laufrad und Verfahren zum Herstellen desselben

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DE102020118982A1 (de) * 2020-07-17 2022-01-20 Nidec Gpm Gmbh Laufrad für eine Zentrifugalflüssigkeitspumpe sowie Zentrifugalflüssigkeitspumpe aufweisend das Laufrad und Kraftfahrzeug aufweisend eine solche Zentrifugalfluidpumpe
JP2023054481A (ja) * 2021-10-04 2023-04-14 株式会社デンソー 遠心式送風機

Citations (2)

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JPS5578196A (en) * 1978-12-08 1980-06-12 Mitsui Eng & Shipbuild Co Ltd Manufacture of impeller
CN1205399A (zh) * 1997-07-11 1999-01-20 株式会社日立制作所 电动风机以及用于制造该电动风机的叶轮的方法

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GB632475A (en) * 1947-12-09 1949-11-28 English Electric Co Ltd Improvements in and relating to the runners of hydraulic machines
DE2535196C3 (de) * 1975-08-07 1980-12-04 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart Laufrad für Radialströmungsmaschine
US7108482B2 (en) * 2004-01-23 2006-09-19 Robert Bosch Gmbh Centrifugal blower
US7632073B2 (en) * 2005-06-08 2009-12-15 Dresser-Rand Company Impeller with machining access panel
DE102006029379B3 (de) * 2006-06-27 2007-10-04 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Schaufelrad
FR2935761B1 (fr) * 2008-09-05 2010-10-15 Alstom Hydro France Roue de type francis pour machine hydraulique, machine hydraulique comprenant une telle roue et procede d'assemblage d'une telle roue
DE102014014287A1 (de) * 2014-09-24 2016-03-24 Ziehl-Abegg Se Lüfterrad

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Publication number Priority date Publication date Assignee Title
JPS5578196A (en) * 1978-12-08 1980-06-12 Mitsui Eng & Shipbuild Co Ltd Manufacture of impeller
CN1205399A (zh) * 1997-07-11 1999-01-20 株式会社日立制作所 电动风机以及用于制造该电动风机的叶轮的方法

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DE102017124746B3 (de) 2018-12-20
EP3473861C0 (fr) 2023-10-04
CN109695591A (zh) 2019-04-30

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