EP0446119B1 - Herstellungsverfahren eines Lüfterrades für rotierende elektrische Maschinen, insbesondere für Wechselstromgeneratoren für Kraftfahrzeuge und Lüfterrad durch ein solches Verfahren hergestellt - Google Patents

Herstellungsverfahren eines Lüfterrades für rotierende elektrische Maschinen, insbesondere für Wechselstromgeneratoren für Kraftfahrzeuge und Lüfterrad durch ein solches Verfahren hergestellt Download PDF

Info

Publication number
EP0446119B1
EP0446119B1 EP91400589A EP91400589A EP0446119B1 EP 0446119 B1 EP0446119 B1 EP 0446119B1 EP 91400589 A EP91400589 A EP 91400589A EP 91400589 A EP91400589 A EP 91400589A EP 0446119 B1 EP0446119 B1 EP 0446119B1
Authority
EP
European Patent Office
Prior art keywords
fan rotor
fan
manufacture according
metal strip
fan blades
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91400589A
Other languages
English (en)
French (fr)
Other versions
EP0446119A1 (de
Inventor
Michel Galliet
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.)
Valeo Equipements Electriques Moteur SAS
Original Assignee
Valeo Equipements Electriques Moteur 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 Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP0446119A1 publication Critical patent/EP0446119A1/de
Application granted granted Critical
Publication of EP0446119B1 publication Critical patent/EP0446119B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/267—Making other particular articles wheels or the like blower wheels, i.e. wheels provided with fan elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49325—Shaping integrally bladed rotor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49329—Centrifugal blower or fan

Definitions

  • the present invention relates to a method of manufacturing a fan wheel for rotating electrical machines, in particular for alternators of motor vehicles, and a fan wheel obtained by such a method.
  • Such devices need to be cooled during operation so as to remain at a limited temperature allowing them to ensure optimum performance.
  • This cooling is generally obtained by forced ventilation through the device to be cooled by means of a fan wheel.
  • the teeth are bent perpendicular to the sheet blank, in order to obtain ventilation blades.
  • the number of ventilation blades that can be obtained depends on the peripheral circular surface of the sheet metal blank and, if, in rotating machines of large diameter, their number may be sufficient, this is not the case. similarly in rotating machines of small diameter such as for example motor vehicle alternators. For the same reasons, the area of the ventilation blades is also limited.
  • quadrangular surfaces intended to be folded according to their midline are trapezoids.
  • the surface of the ventilation blades can be increased since it only depends on the unit size of the folded surfaces.
  • a fan wheel produced according to the above method has cooling performance perfectly suited to electric rotating machines such as alternators for the motor vehicle on which it is to be installed, and at a very reduced cost.
  • the method according to the invention makes it possible to obtain non-radial and non-equidistant blades, which allows noise phenomena to be controlled in a particularly economical manner.
  • the fan wheel is obtained from a metal strip 10 partially shown in Figure 1, the shape (shown in phantom) is rectangular.
  • this metal strip 10 is divided into 2n quadrangular surfaces, n being the number of blades to be fitted with the fan wheel.
  • quadrangular surfaces 11 On the metal strip are alternated quadrangular surfaces 11 having outer edges 16,17, and quadrangular surfaces 12, said quadrangular surfaces 12 preferably having a generally trapezoidal shape.
  • These surfaces 12 each have a center line 13 perpendicular to the outer edges 14,15 which are parallel to each other.
  • said center line 13 generally constitutes the bisector of the angle formed by the lateral sides of said surface 12.
  • the trapezoidal surfaces 12 are folded successively or simultaneously along their median lines 13 to form the ventilation blades 18 of the fan wheel 19.
  • the quadrangular surfaces 11 constitute connecting surfaces between two successive vertilation blades 18.
  • a fan wheel 19 is thus produced from a metal strip 10, the outline of which has the shape of an irregular polygon of n sides as shown in FIG. 2.
  • the ventilation blades 18 thus formed are neither radial nor equidistant, which allows the fan wheel 19 to have increased efficiency while reducing, or even eliminating noise phenomena.
  • the size of the blades can be increased since it only depends on the size unit of the trapezoidal surfaces 12. Likewise, their number is no longer limited since it only depends on the unit size of the quadrangular surfaces 11.
  • Figure 3 is a partial view of the fan wheel 19 produced according to the invention.
  • the outer contour 20 of said wheel is in the form of an irregular polygon whose vertices S1, S2, S3 .... are inscribed in a circle 21 with center O.
  • the blades 181, 182, 183 .... have variable inclinations ⁇ 1, ⁇ 2, ⁇ 3 .... compared to the radii OS1, OS2, OS3 ....
  • variable angles A, B correspond to the angular differences respectively between the vertices S1, S2 on the one hand, S2, S3 on the other hand.
  • FIG. 4 where a partial view of the metal strip 10 before folding has been shown corresponding to the blade 182 of FIG. 3.
  • the sides 222 of the trapezoid formed by the surface 122 have, with respect to the edges 16, angles C + D previously calculated.
  • E 180 ° - (C + D)
  • E 180 ° - (90 ° - A / 2 - ⁇ 2 + 90 ° - B / 2 + ⁇ 2).
  • angle F 90 ° + (A + B) / 4.
  • the median line 132 constitutes the bisector of the angle E formed by the sides 222 of the surface 122.
  • FIG. 5 illustrates a profile view of a ventilation blade 18 obtained with the manufacturing method according to the invention.
  • This ventilation blade has an upper face 23 making an angle P with the horizontal, that is to say an angle P with respect to the base 10 of the fan wheel 10.
  • Said ventilation blade 18 also has an outer side 24 making an angle R with the vertical that is to say with a perpendicular to the base 10 of the fan wheel 19.
  • This V-shaped notch 25 has sides 26 symmetrical with respect to the center line 13 and which are perpendicular to the sides 22 of the trapezoidal surface 12 at the points of intersection 27,28 of said sides 22 and of the outer edge 14 of the trapezoidal surface 12 .
  • V-shaped notch 30 (FIG. 6) which opens out towards the outer edge 15 of the trapezoidal surface 12 and is symmetrical with respect to the center line 13.
  • V-shaped notches 25, 30 are made on all the trapezoidal surfaces so that all the ventilation blades are identical.
  • the metal strip 10 is cut straight along widths L1, L2, L3 as shown in FIG. 7.
  • FIG. 8 schematically represents a fan wheel 19 obtained with a straight cutout of the metal strip 10. It can be seen in particular that the external and internal contours of the polygon formed by the edges 16, 17 of the quadrangular surfaces 11 have notches at the right ventilation blades 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Manufacture Of Motors, Generators (AREA)

Claims (8)

  1. Herstellungsverfahren eines Lufterrades (19), insbesondere für rotierende elektrische Maschinen, wobei dieses Lüfterrad n Lüfterflügel (18) umfassen soll, bestehend aus den folgenden Arbeitsgängen:
    - es wird ein Metallband (10) mit länglicher Form gebildet;
    - das besagte Metallband (10) wird in 2n Flächen (11, 12) mit allgemein viereckiger Form geteilt;
    - nacheinander oder gleichzeitig wird jede zweite viereckige Fläche (12) im Verhältnis zu ihrer Mittellinie (13), die durch die Winkelhalbierende des aus den beiden Seiten (22) der besagten viereckigen Fläche (12) bestehenden Winkels (E) gebildet wird, so gebogen, daß das Lüfterrad (19) nach dem Biegen einen Umriß (20) in Form eines Vielecks mit Scheiteln (S1, S2, S3 ...) aufweist, die in einen Kreis (21) mit dem Mittelpunkt (O) eingeschrieben sind, wobei die Lüfterflügel (18) eine veränderliche Neigung (α1, α2, α3 ...) im Verhältnis zu den Radien (OS1, OS2, OS3 ...) aufweisen.
  2. Herstellungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Scheitel (S1, S2, S3 ...) und folglich die Lüfterflügel (18) einen veränderlichen Winkelabstand (A, B ...) aufweisen.
  3. Herstellungsverfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß vor jedem Vorgang zum Biegen der Flächen (12) durch Einschneiden jeder dieser Flächen ein V-förmiger Einschnitt (25) angebracht wird, der Seiten (26) aufweist, die senkrecht zu den Seiten (22) der Fläche (12) in den Schnittpunkten (27, 28) der besagten Seiten (22) mit der Außenkante (14) verlaufen.
  4. Herstellungsverfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß vor jedem Vorgang zum Biegen der Flächen (12) durch Einschneiden jeder dieser Flächen ein V-förmiger Einschnitt (30) angebracht wird, der symmetrisch im Verhältnis zur Mittellinie (13) angeordnet ist und gegenüber der Kante (15) mündet.
  5. Herstellungsverfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß vor jedem Biegevorgang ein gerades Schneiden des Metallbands (10) erfolgt.
  6. Herstellungsverfahren nach Anspruch 5, dadurch gekennzeichnet, daß nach dem Biegen die Außen- und Innenumrisse des Vielecks, die durch die Kanten (16, 17) der viereckigen Flächen (11) gebildet werden, Absätze in Höhe der Lüfterflügel (18) aufweisen.
  7. Herstellungsverfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Lüfterflügel (18) Flächen (31, 32) aufweisen, die sich teilweise überdecken.
  8. Lüfterrad (19) mit n Lüfterflügeln (18) , dadurch gekennzeichnet, daß das besagte Lüfterrad (19) durch das Verfahren nach einem der Ansprüche 1 bis 7 hergestellt wird.
EP91400589A 1990-03-08 1991-03-05 Herstellungsverfahren eines Lüfterrades für rotierende elektrische Maschinen, insbesondere für Wechselstromgeneratoren für Kraftfahrzeuge und Lüfterrad durch ein solches Verfahren hergestellt Expired - Lifetime EP0446119B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002926A FR2659506B1 (fr) 1990-03-08 1990-03-08 Procede de fabrication d'une roue de ventilateur pour machines tournantes electriques, notamment pour alternateurs de vehicules automobiles, et roue de ventilateur obtenue par un tel procede.
FR9002926 1990-03-08

Publications (2)

Publication Number Publication Date
EP0446119A1 EP0446119A1 (de) 1991-09-11
EP0446119B1 true EP0446119B1 (de) 1995-08-02

Family

ID=9394506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400589A Expired - Lifetime EP0446119B1 (de) 1990-03-08 1991-03-05 Herstellungsverfahren eines Lüfterrades für rotierende elektrische Maschinen, insbesondere für Wechselstromgeneratoren für Kraftfahrzeuge und Lüfterrad durch ein solches Verfahren hergestellt

Country Status (6)

Country Link
US (1) US5075964A (de)
EP (1) EP0446119B1 (de)
JP (1) JPH05332295A (de)
DE (1) DE69111641T2 (de)
ES (1) ES2079594T3 (de)
FR (1) FR2659506B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545977A1 (de) * 1995-12-09 1997-06-12 Fluck Hans Joachim Dr Dipl Ing Lauf- bzw. Lüfterrad für Strömungsmaschinen und Verfahren zu seiner Herstellung
US6948910B2 (en) 2002-07-12 2005-09-27 Polacsek Ronald R Spiral-based axial flow devices
US8251662B2 (en) 2007-01-22 2012-08-28 Parker Daniel B Wind turbine blade assembly and apparatus
US8881396B2 (en) 2011-02-07 2014-11-11 Revcor, Inc. Method of manufacturing a fan assembly
FR3021171B1 (fr) * 2014-05-14 2020-09-04 Valeo Equip Electr Moteur Ventilateur de machine electrique tournante
US10865808B2 (en) * 2014-05-14 2020-12-15 Valeo Equipements Electriques Moteur Fan for rotary electrical machine
JP2018121431A (ja) * 2017-01-25 2018-08-02 株式会社デンソー 回転電機の回転子及び回転電機
US11274677B2 (en) 2018-10-25 2022-03-15 Revcor, Inc. Blower assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB541910A (en) * 1939-05-20 1941-12-17 Philco Radio & Television Corp Cathode ray tube envelope

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1897947A (en) * 1928-11-10 1933-02-14 Bell & Howell Co Fan structure
US2690151A (en) * 1952-03-26 1954-09-28 House William Carl Means and method of making airfoils
US2802620A (en) * 1953-02-16 1957-08-13 Gen Motors Corp Impeller for a centrifugal fan or blower
DE1958482A1 (de) * 1969-11-21 1971-05-27 Volkswagenwerk Ag Luefterblech,insbesondere fuer Kraftfahrzeug-Aggregate
US3737966A (en) * 1971-01-13 1973-06-12 Lau Inc Method of constructing a bladed blower wheel
US3921272A (en) * 1974-05-24 1975-11-25 Torin Corp Blower wheel and method of making the same
US4329118A (en) * 1980-01-08 1982-05-11 Philips Industries, Inc. Centrifugal blower wheels
US4741194A (en) * 1986-09-25 1988-05-03 The Budd Company Composite rotor manufacturing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB541910A (en) * 1939-05-20 1941-12-17 Philco Radio & Television Corp Cathode ray tube envelope

Also Published As

Publication number Publication date
US5075964A (en) 1991-12-31
DE69111641T2 (de) 1996-01-25
FR2659506A1 (fr) 1991-09-13
FR2659506B1 (fr) 1995-06-02
JPH05332295A (ja) 1993-12-14
DE69111641D1 (de) 1995-09-07
EP0446119A1 (de) 1991-09-11
ES2079594T3 (es) 1996-01-16

Similar Documents

Publication Publication Date Title
EP0446119B1 (de) Herstellungsverfahren eines Lüfterrades für rotierende elektrische Maschinen, insbesondere für Wechselstromgeneratoren für Kraftfahrzeuge und Lüfterrad durch ein solches Verfahren hergestellt
EP1285714B1 (de) Beschaufelte Rotorscheibe und deren Herstellungsverfahren
JP3989924B2 (ja) ブレード根部保持スロットの機械加工方法
EP2925542B1 (de) Winterreifenlaufstreifen mit einschnitten und hohlräumen
EP2788205B1 (de) Laufstreinfen profil mit variablen fasen
EP0687582B1 (de) Reifenlauffläche
FR2722144A1 (fr) Bande de roulement pour pneumatique
EP2688754B1 (de) Verschleissoptimierte lauffläche für den reifen eines schwerlastfahrzeuges und optimierungsverfahren
EP1414653A1 (de) Mit schlitzen versehene lauffläche
EP3061696B1 (de) Zuschnitt für die herstellung einer verpackung mindestens eines scheibenwischers, verpackung und verfahren zur herstellung einer solchen verpackung
EP2552715B1 (de) Reifenprofil mit einschnitten
FR2711679A1 (fr) ÓOEillet de fil pour lisse de tissage et lisse pourvue d'un tel Óoeillet ainsi que son procédé de réalisation.
FR2513823A1 (fr) Piece semi-finie de collecteur
EP1051791B1 (de) Herstellungsverfahren für einen Wechselstromgenerator für Kraftfahrzeuge mit Zwischenpolmagneten sowie nach diesem Verfahren hergestellter Generator
EP2509804B1 (de) Verfahren für den entwurf eines reifens und reifen
FR2976852A1 (fr) Pneumatique muni de canaux sonores
EP0968848B1 (de) Reifenlauffläche mit Einschnitten ,welche Gummiblöcke begrenzen
WO2001032448A1 (fr) Sculpture de bande de roulement pour pneumatique de vehicule a forte capacite de charge
EP0500442B1 (de) Lüfterrad für rotierende elektrische Maschinen, insbesondere für Wechselstromgeneratoren für Kraftfahrzeuge
FR2652618A1 (fr) Procede de fabrication d'une roue de ventilateur pour machines tournantes electriques, notamment pour alternateurs de vehicules automobiles, et roue de ventilateur obtenue par un tel procede.
WO2002038303A1 (fr) Procede de fabrication d'une jante de roue de vehicule
FR2821684A1 (fr) Pedale de commande notamment utilisable pour un frein
EP0725009A1 (de) Verfahren zum Herstellen einer metallischen Verpackung mit allgemeiner prismatischer Form und mit diesem Verfahren hergestellte Verpackung
EP2138246B1 (de) Rohr hergestellt aus einem planen Rohling und Verfahren zur Herstellung eines solchen Rohres
FR2517849A1 (fr) Regle a calculer

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES GB IT

17P Request for examination filed

Effective date: 19920108

17Q First examination report despatched

Effective date: 19930630

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES GB IT

REF Corresponds to:

Ref document number: 69111641

Country of ref document: DE

Date of ref document: 19950907

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19951024

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2079594

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: GB

Payment date: 19970226

Year of fee payment: 7

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

Ref country code: ES

Payment date: 19970307

Year of fee payment: 7

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

Ref country code: DE

Payment date: 19970516

Year of fee payment: 7

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 NON-PAYMENT OF DUE FEES

Effective date: 19980305

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 NON-PAYMENT OF DUE FEES

Effective date: 19980306

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980305

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 NON-PAYMENT OF DUE FEES

Effective date: 19981201

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990414

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;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: 20050305