EP2113054B1 - Rotor constitué d'un matériau plat - Google Patents

Rotor constitué d'un matériau plat Download PDF

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Publication number
EP2113054B1
EP2113054B1 EP08759127A EP08759127A EP2113054B1 EP 2113054 B1 EP2113054 B1 EP 2113054B1 EP 08759127 A EP08759127 A EP 08759127A EP 08759127 A EP08759127 A EP 08759127A EP 2113054 B1 EP2113054 B1 EP 2113054B1
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EP
European Patent Office
Prior art keywords
impeller
blades
impeller according
attachment parts
bent
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
EP08759127A
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German (de)
English (en)
Other versions
EP2113054A1 (fr
Inventor
Thomas Materne
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.)
Wilo SE
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Wilo SE
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Publication date
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Publication of EP2113054A1 publication Critical patent/EP2113054A1/fr
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Publication of EP2113054B1 publication Critical patent/EP2113054B1/fr
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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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • F04D29/2233—Construction and assembly entirely open or stamped from one sheet
    • 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
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans

Definitions

  • the invention relates to an impeller of a pump or a blower of a one-piece material, in particular of sheet metal with a flat central region, on the outer edge of the blades are formed and bent.
  • a sheet wheel with low flow is from the DE 3717229 A1 known.
  • the central region of the impeller plate is deformed to a central sleeve which projects on the rear side of the impeller and in which the pump shaft can be fastened.
  • the production of such a cylindrical scar is relatively expensive.
  • a blower with a propeller whose central portion is bent to a circular region on which a shaft can be fastened.
  • the object of the invention is to improve an impeller of the type mentioned so that it has a low weight and thus a low moment of inertia with simple cost-effective production. It is also an object of the invention to provide an impeller that allows easy installation and is suitable for smaller pumps or blowers.
  • the fasteners formed in this way represent a particularly easy to manufacture attachment for the pump / fan or for the motor shaft.
  • the impeller has a very low weight and thus a low moment of inertia.
  • the mounting on the bent-back fastening parts is particularly simple.
  • a particularly advantageous production with optimum use of the material is achieved when the fasteners sit in the non-bent state in a region of the sheet material, which is formed by a taper of an adjacent blade.
  • particularly favorable conveying impeller blades are created, wherein the taper of the blades near the blade root allows a simple rotation of the blade.
  • the radial extent of the fastening parts is a quarter to a sixth of the impeller diameter. Furthermore, it is advantageous if the fastening parts are bent backwards by at least 90 degrees. A secure hold on positive engagement with the shaft is achieved when the fasteners are curved in their surface corresponding to the surface of the pump shaft.
  • the blades are turned for bending about an axis substantially the longitudinal direction of the blade equivalent.
  • the blades are rotated about an axis which corresponds to a radius of the impeller or is parallel to a radius of the impeller or is at an acute angle to a radius of the impeller.
  • the impeller 1 of a pump or a blower is punched out of a one-piece, sheet material, in particular made of sheet metal and then has the in Fig. 1 illustrated form. It has a central central region 2, on which blades 3 are formed in an approximately radial direction. Within an inner region 6, which is larger than the central region 2, the remaining material areas remaining between the blades 3 are used as fastening parts 4, the fastening parts 4 and the blades 3 adjoining each other except for the stamped slots 5 located therebetween.
  • Each blade 3 has an outer wider portion 3a which tapers outwardly and an inner portion 3b which tapers towards the center of the rotor and forms a narrow foot portion 3c which merges into the central portion 2.
  • the concave taper 3d of the blade 3 surrounds a correspondingly shaped convex bulge 4a of the fastening part 4. The blades 3 thus protrude with their outer region 3a beyond the inner region 6, while the fastening parts 4 remain within the region 6 and with their outer ends adjoin this.
  • the blades 3 are each bent by an impeller radius towards the front of the impeller, wherein in this bending only the foot region 3c is wound.
  • the blades are thus rotated about an axis A, which corresponds to a radius of the running radius. Instead, however, the axis of rotation A may be parallel to a radius of the impeller or at an acute angle to the radius. In any of these cases, however, all or most of the blade 3 is bent over to the front of the impeller. This bend can be 90 degrees or deviate from it.
  • the fastening parts 4 are bent around a tangent B of the central region 2 to the rear by at least 90 degrees to form a mounting space 7, in which the pump shaft 8 can be inserted.
  • the fasteners 4 surrounded so all around the shaft 8, wherein the fasteners 4 may be curved in its surface corresponding to the surface of the pump shaft, so that all fasteners together with their inner sides as it forms a socket for the shaft 8 and with their inner sides on the outer surface of the Wave 8 abut.
  • the blades 3 may be curved in their surface in order to increase the hydraulic efficiency in a preferred direction. Furthermore, the blades may have the same or different structures and the number of blades 3 corresponds to the particular hydraulic requirements for the impeller. To form the fastening parts 4, not the entire material areas located between the blades 3 have to be used. Elongated subareas, in particular in web form, are also sufficient for this purpose.
  • the fasteners 4 can give the hub a conical shape, so that a secure hold against twists and displacements of the impeller is given on the shaft.
  • a material for the impeller sheet are chairs that have sufficient rigidity, have a suitable spring action to prevent deformation and thus allow secure attachment of the shaft.
  • stainless steel is to be preferred.

Claims (17)

  1. Rotor d'une pompe ou d'un ventilateur constitué d'un matériau monobloc avec une zone centrale plane (2), sur le bord extérieur de laquelle sont conformées et repliées les pales (3), caractérisé en ce que des zones de matériau résiduelles, situées entre les pales (3), sont repliées en une partie en direction du côté arrière et forment des éléments de fixation (4) pour un arbre de pompe ou de ventilateur (8), les éléments de fixation (4) étant repliés en direction du côté arrière jusqu'à ce qu'ils circonscrivent un espace (7) pour la formation du moyeu de rotor, espace dans ou sur lequel peut être fixé l'arbre de pompe ou de ventilateur.
  2. Rotor suivant la revendication 1, caractérisé en ce qu'une zone partielle en forme de traverse des zones de matériau situées entre les pales (3) est repliée en direction du côté arrière.
  3. Rotor suivant l'une des revendications 1 et 2, caractérisé en ce que les éléments de fixation (4) sont repliés en direction du côté arrière autour d'une tangente (B) de la zone centrale (2).
  4. Rotor suivant l'une des revendications précédentes, caractérisé en ce que les éléments de fixation (4), dans l'état de non repli, se situent dans une zone du matériau plan formée par un rétrécissement (3d) d'une pale voisine (3)
  5. Rotor suivant l'une des revendications précédentes, caractérisé en ce que l'extension radiale des éléments de fixation (4) représente un quart à un sixième du diamètre (D) du rotor.
  6. Rotor suivant l'une des revendications précédentes, caractérisé en ce que les éléments de fixation (4) sont repliés d'au moins 90° en direction du côté arrière.
  7. Rotor suivant l'une des revendications précédentes, caractérisé en ce que les éléments de fixation (4) sont cintrés dans leur surface en conformité avec la surface de l'arbre de pompe ou de ventilateur.
  8. Rotor d'une pompe ou d'un ventilateur constitué d'un matériau plan monobloc en tôle avec une zone centrale plane (2), sur le bord extérieur de laquelle sont conformées et repliées les pales (3), suivant l'une des revendications précédentes, caractérisé en ce que les pales (3) sont tournées pour le repli autour d'un axe (A), qui correspond essentiellement à l'orientation longitudinale des pales (3).
  9. Rotor suivant la revendication 8, caractérisé en ce que les pales (3) sont tournées autour d'un axe, qui correspond à un rayon du rotor (1) ou est parallèle à un rayon du rotor ou se situe en angle aigu par rapport à un rayon du rotor.
  10. Rotor suivant l'une des revendications précédentes, caractérisé en ce que les pales (3) sont repliées en saillie en direction du côté avant du rotor (1).
  11. Rotor suivant l'une des revendications précédentes, caractérisé en ce que l'extension radiale des pales (3) représente au moins un quart, de préférence un tiers, du diamètre (D) du rotor.
  12. Rotor suivant l'une des revendications précédentes, caractérisé en ce que les pales (3) se terminent en se rétrécissant en une zone d'emplanture étroite (3e), conformée sur une zone centrale (2).
  13. Rotor suivant la revendication 12, caractérisé en ce que la zone d'emplanture étroite (3e) est tordue pour le repli des pales (3).
  14. Rotor suivant l'une des revendications précédentes, caractérisé en ce que les pales (3), les zones (4) situées entre les pales, et la zone centrale (2) sont découpées à la matrice d'une pièce unique de tôle.
  15. Rotor suivant l'une des revendications précédentes, caractérisé en ce que les pales (3) et les éléments de fixation (4) sont respectivement limitrophes les uns aux autres, bilatéralement, au moins dans une zone intérieure (6) et ne sont séparés les uns des autres que par des lignes de coupe ou de découpe.
  16. Rotor suivant l'une des revendications précédentes, caractérisé en ce que la surface des pales (3) présente sur sa longueur une courbure et/ou cintrage.
  17. Rotor suivant l'une des revendications précédentes, caractérisé en ce qu'il se compose de tôle d'acier.
EP08759127A 2007-06-11 2008-06-10 Rotor constitué d'un matériau plat Active EP2113054B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027370A DE102007027370A1 (de) 2007-06-11 2007-06-11 Laufrad aus flächigem Material
PCT/EP2008/004599 WO2008151770A1 (fr) 2007-06-11 2008-06-10 Rotor constitué d'un matériau plat

Publications (2)

Publication Number Publication Date
EP2113054A1 EP2113054A1 (fr) 2009-11-04
EP2113054B1 true EP2113054B1 (fr) 2011-04-06

Family

ID=39684544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08759127A Active EP2113054B1 (fr) 2007-06-11 2008-06-10 Rotor constitué d'un matériau plat

Country Status (4)

Country Link
EP (1) EP2113054B1 (fr)
AT (1) ATE504745T1 (fr)
DE (2) DE102007027370A1 (fr)
WO (1) WO2008151770A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100022799A1 (it) * 2021-09-03 2023-03-03 Almes Srl Dispositivo di ventilazione forzata per un forno di cottura

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3690433B9 (fr) * 2010-03-09 2022-12-21 ANDE Corporation Biopuce avec stockage de réactifs
DE102010020574A1 (de) 2010-05-14 2011-11-17 Ksb Aktiengesellschaft Strömungsführende Einrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB440587A (en) * 1934-12-12 1936-01-02 Humber Ltd Fans
GB1062946A (en) * 1963-11-14 1967-03-22 Speedwell Res Ltd Improvements in or relating to centrifugal pumps
SU1267058A1 (ru) * 1984-08-15 1986-10-30 Stavinskij Andrej A Способ изготовлени рабочего колеса вентил тора
DD259975A3 (de) 1986-07-07 1988-09-14 Merbelsrod Geraete Pumpen Veb Blechlaufrad kleiner foerderleistung, insbesondere fuer kuehlmittelpumpen
DE4008216A1 (de) * 1990-03-15 1991-09-19 Grundfos Int Verfahren zur herstellung von fluidfuehrenden einrichtungen
DE10052637B4 (de) * 2000-10-24 2021-03-11 Pfeiffer Vacuum Gmbh 16.02.2001 Scheiben für eine Turbomolekularpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100022799A1 (it) * 2021-09-03 2023-03-03 Almes Srl Dispositivo di ventilazione forzata per un forno di cottura

Also Published As

Publication number Publication date
ATE504745T1 (de) 2011-04-15
WO2008151770A1 (fr) 2008-12-18
DE502008003090D1 (de) 2011-05-19
EP2113054A1 (fr) 2009-11-04
DE102007027370A1 (de) 2008-12-18

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