EP0446119A1 - 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

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Publication number
EP0446119A1
EP0446119A1 EP91400589A EP91400589A EP0446119A1 EP 0446119 A1 EP0446119 A1 EP 0446119A1 EP 91400589 A EP91400589 A EP 91400589A EP 91400589 A EP91400589 A EP 91400589A EP 0446119 A1 EP0446119 A1 EP 0446119A1
Authority
EP
European Patent Office
Prior art keywords
manufacturing
quadrangular
fan wheel
ventilation blades
sides
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
EP91400589A
Other languages
English (en)
French (fr)
Other versions
EP0446119B1 (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

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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
    • 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 metal blank, in order to obtain ventilation blades.
  • the number of ventilation blades that can be obtained is a function of 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 small diameter rotating machines such as for example motor vehicle alternators. For the same reasons, the area of the ventilation blades is also limited.
  • the quadrangular surfaces intended to be folded along 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 in FIG. 3.
  • the sides 222 of the trapezium 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 side 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)
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
FR9002926 1990-03-08
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.

Publications (2)

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

Cited By (1)

* 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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (3)

* 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
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2236708A (en) * 1939-05-20 1941-04-01 Philco Radio & Television Corp Cathode ray tube vessel
US2690151A (en) * 1952-03-26 1954-09-28 House William Carl Means and method of making airfoils
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 (3)

* 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
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

Cited By (1)

* 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

Also Published As

Publication number Publication date
DE69111641T2 (de) 1996-01-25
ES2079594T3 (es) 1996-01-16
EP0446119B1 (de) 1995-08-02
JPH05332295A (ja) 1993-12-14
US5075964A (en) 1991-12-31
FR2659506B1 (fr) 1995-06-02
DE69111641D1 (de) 1995-09-07
FR2659506A1 (fr) 1991-09-13

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