EP0303924B1 - Roue-ventilateur fabriquée d'un disque de tôle et sa méthode de fabrication - Google Patents

Roue-ventilateur fabriquée d'un disque de tôle et sa méthode de fabrication Download PDF

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Publication number
EP0303924B1
EP0303924B1 EP88112859A EP88112859A EP0303924B1 EP 0303924 B1 EP0303924 B1 EP 0303924B1 EP 88112859 A EP88112859 A EP 88112859A EP 88112859 A EP88112859 A EP 88112859A EP 0303924 B1 EP0303924 B1 EP 0303924B1
Authority
EP
European Patent Office
Prior art keywords
blades
impeller
fan
center portion
sawtooth
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
EP88112859A
Other languages
German (de)
English (en)
Other versions
EP0303924A3 (en
EP0303924A2 (fr
Inventor
Reinhold Hopfensperger
Werner Eichhorn
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
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 Alcatel SEL AG, Standard Elektrik Lorenz AG filed Critical Alcatel SEL AG
Priority to AT88112859T priority Critical patent/ATE68852T1/de
Publication of EP0303924A2 publication Critical patent/EP0303924A2/fr
Publication of EP0303924A3 publication Critical patent/EP0303924A3/de
Application granted granted Critical
Publication of EP0303924B1 publication Critical patent/EP0303924B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21D53/78—Making other particular articles propeller blades; turbine blades
    • 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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y10S416/03—Sheet metal

Definitions

  • the invention relates to a fan wheel made from a sheet metal disk with a plurality of fan blades, which are produced by cuts in the sheet metal disk and which are bent out essentially at right angles from the plane of the sheet metal disk.
  • Such a fan wheel is known (DE-A-15 03 633).
  • the known fan wheel is made from an approximately circular sheet metal disk in such a way that it is cut and the fan blades created in this way are produced by bending out by 90 degrees to one side or the other of the sheet metal disk plane.
  • the known fan impeller requires a higher air output, it is necessary because of its poor fluidic properties either to operate the fan impeller at high speeds or to increase the diameter of the fan impeller.
  • Another fan wheel is known (US-A-2,011,298) which has a circular flat center.
  • the fan blades connected to this center are formed in two parts. They consist of disks that are rounded on one side and intertwined, which are connected to the wings that are bent up at right angles from the plane of the center.
  • a pump is also known (US Pat. No. 2,117,011), the pump wheel of which has a circular, flat center from which radially strip-shaped blades extend. These blades are rotated ninety degrees around their longitudinal axis, being crossed near the center. In this known pump wheel, only a very small area of the sheet metal disk is used for the pumping action.
  • the invention is therefore based on the object of improving the fan wheel in such a way that the blades have an effective blade area which is as large as possible with the same fan wheel diameter, so that the fan wheel has better efficiency with low noise.
  • the advantage of the inexpensive method of production by deforming a sheet metal plate should be retained.
  • This object is achieved in that with the edges of sawtooth-shaped projections of a circular saw blade-shaped, flat center blade roots bent out of the plane of the center are connected, which continue in fan blades extending in the radial direction, the fan blades being each wider than the projections .
  • a radial fan equipped with the fan wheel according to the invention has the advantage that, in order to generate the same air flow compared to the known fan wheel, a significantly lower motor output is required. This is due on the one hand to the larger effective blade area and on the other hand to the more aerodynamically advantageous design of the fan wheel according to the invention. This also results in less noise from the fan. With the same air power output, the power consumption of the fan motor equipped with the fan wheel according to the invention is reduced by more than 50% compared to the fan with a known fan wheel.
  • the fan wheel 1 has a flat center 4, which has the shape of a circular saw blade.
  • the center 4 consists namely of an essentially circular blank, which is circumferentially covered with a plurality of sawtooth-shaped projections 3.
  • the blade feet 5 cannot be seen in FIGS. 1 and 2
  • the fan blades 2 which correspond to the plane of the center include about a right angle.
  • the two embodiments of the fan wheel according to FIGS. 1 and 2 differ in that, in the embodiment according to FIG. 1, the blade feet 5 and thus the fan blades 2 are connected to the outer edge 6 of the sawtooth-shaped projections 3, while in the embodiment 2 with the front edge 7 of the sawtooth-shaped projections 3 in connection.
  • the development of the fan wheel 1 has a plurality of fan blades 2, which run radially outward from the center 4.
  • the fan blades 2 are separated by an approximately S-shaped parting line 8, which was created during punching.
  • the fan blades 2 are only connected to the center 4 of the fan wheel via the blade root 5.
  • the fan wheel is produced in the following way: After the unwinding 1 has been punched out of a flat sheet, the fan blades are bent, for example in a circular manner towards the viewer (in the position of the unrolling shown in FIG. 3). Subsequently, the fan blades 2 are bent through 90 angular degrees on the dashed line 9 (also towards the viewer). After the center 4 has been provided with a hub 10, a fan wheel has arisen, as can be seen from FIG. 2.
  • the fan wheel according to the invention can be optimally produced in terms of flow technology in a simple manner for every application.
  • Another advantage of the fan wheel according to the invention is the considerably higher temperature resistance of the steel sheet generally used in comparison with the usual aluminum die-cast wheel.

Claims (7)

  1. Roue de ventilateur fabriquée à partir d'un disque de tôle, comportant une pluralité de pales de ventilateur, qui sont produites au moyen de découpes pratiquées dans la tôle et qui sont repliées sensiblement à angle droit hors du plan du disque de tôle, caractérisée en ce que des pieds (5) de pales sont reliés, aux bords de saillies (3) en forme de dents de scie d'un centre (4) plan en forme de lame de scie circulaire, en formant une seule pièce avec ceux-ci, lesquels pieds se prolongent par des pales (2) de ventilateur qui s'étendent dans le sens radial, les pales (2) de ventilateur étant dans chaque cas plus larges que les saillies (3).
  2. Roue de ventilateur selon la revendication 1, caractérisée en ce que les pieds (5) de pales sont reliés au bord avant (7) des saillies (3) en forme de dent de scie.
  3. Roue de ventilateur selon la revendication 1, caractérisée en ce que les pieds (5) de pales sont reliés au bord extérieur (6) des saillies (3) en forme de dent de scie.
  4. Roue de ventilateur selon la revendication 1 et selon l'une des revendications 2 ou 3, caractérisée en ce que les pales (2) présentent une courbure.
  5. Roue de ventilateur selon la revendication 4, caractérisée en ce que les pales (2) sont en outre gauchies.
  6. Procédé de fabrication d'une roue de ventilateur selon les revendications 1 à 5, caractérisé en ce qu'il comporte les étapes suivantes:
    a) on découpe dans une surface de tôle une pièce plane dont la forme correspond au développement de la roue de ventilateur au départ du centre, aux pieds de pales, et aux pales;
    b) les pales sont repliées selon un angle d'environ quatre-vingt dix degrés hors du plan du centre suivant une ligne droite située à la limite entre les saillies en forme de dents de scie et les pieds de pales.
  7. Procédé selon la revendication 6, caractérisé en ce qu'après l'étape a), les pales sont d'abord courbées en forme de cuvette hors du plan du centre, en vue de réaliser la courbure et, le cas échéant simultanément, elles subissent elles-mêmes un gauchissement.
EP88112859A 1987-08-10 1988-08-06 Roue-ventilateur fabriquée d'un disque de tôle et sa méthode de fabrication Expired - Lifetime EP0303924B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88112859T ATE68852T1 (de) 1987-08-10 1988-08-06 Aus einer metallblechscheibe hergestelltes luefterrad und verfahren zu seiner herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3726522 1987-08-10
DE19873726522 DE3726522A1 (de) 1987-08-10 1987-08-10 Aus einer metallblechscheibe hergestelltes luefterrad und verfahren zu seiner herstellung

Publications (3)

Publication Number Publication Date
EP0303924A2 EP0303924A2 (fr) 1989-02-22
EP0303924A3 EP0303924A3 (en) 1989-06-07
EP0303924B1 true EP0303924B1 (fr) 1991-10-23

Family

ID=6333420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112859A Expired - Lifetime EP0303924B1 (fr) 1987-08-10 1988-08-06 Roue-ventilateur fabriquée d'un disque de tôle et sa méthode de fabrication

Country Status (6)

Country Link
US (1) US5007801A (fr)
EP (1) EP0303924B1 (fr)
JP (1) JPS6463699A (fr)
AT (1) ATE68852T1 (fr)
DE (2) DE3726522A1 (fr)
ES (1) ES2027738T3 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3872139D1 (de) * 1987-09-30 1992-07-23 Winkelmann & Pannhoff Gmbh Verfahren zur herstellung von foerder und/oder leiteinrichtungen fuer stroemungsmaschinen und nach diesem verfahren hergestelltes radial-laufrad, insbesondere kuehlmittelpumpenrad fuer brennkraftmaschinen.
US5479554A (en) * 1994-01-11 1995-12-26 Windsor Communications Splice closure apparatus for continuous optical ground wire communications cable and splicing system
US6511294B1 (en) 1999-09-23 2003-01-28 General Electric Company Reduced-stress compressor blisk flowpath
GB2361034A (en) * 2000-04-05 2001-10-10 Hansen Transmissions Int Air impellor formed from sheet material
DE10020878C2 (de) * 2000-04-28 2002-05-02 Verax Ventilatoren Gmbh Lüfter insbesondere zur Belüftung von elektronischen Geräten
US6524070B1 (en) 2000-08-21 2003-02-25 General Electric Company Method and apparatus for reducing rotor assembly circumferential rim stress
US6471474B1 (en) 2000-10-20 2002-10-29 General Electric Company Method and apparatus for reducing rotor assembly circumferential rim stress
DE102005046056A1 (de) * 2005-09-27 2007-03-29 Robert Bosch Gmbh Lüfterrad zur Förderung von Kühlluft für eine elektrische Maschine
JP2013160096A (ja) * 2012-02-02 2013-08-19 Aisin Seiki Co Ltd 流体ポンプ用の羽根部材
EP2867537B1 (fr) 2012-06-20 2020-02-19 Philadelphia Mixing Solutions, Ltd. Hélice axiale formée sans râclement à haut rendement
TWI581876B (zh) * 2013-06-20 2017-05-11 鴻準精密工業股份有限公司 風扇轉子的製造方法
CN104226797B (zh) * 2013-06-20 2017-12-22 富瑞精密组件（昆山）有限公司 风扇转子的制造方法
US10863674B2 (en) 2018-02-28 2020-12-15 Deere & Company Tine device for an impeller apparatus
USD911397S1 (en) 2018-02-28 2021-02-23 Deere & Company Tine device
CN110630341A (zh) * 2018-06-25 2019-12-31 廖紫成 喙轮压旋动力机及其动力系统
CN111408912B (zh) * 2020-05-14 2021-08-20 中国兵器工业第五九研究所 一种小直径窄间隙薄壁多叶片构件的制备方法及夹持工装

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FR412148A (fr) * 1910-01-13 1910-07-04 William Snee Moteurs du genre turbine
US1469086A (en) * 1921-07-15 1923-09-25 Nelson H Henderson Centrifugal fan and method of making the same
US1734541A (en) * 1925-03-12 1929-11-05 Winslow Boiler & Engineering C Process of making fans
US1827316A (en) * 1929-11-18 1931-10-13 Mcquay Radiator Corp Rotor
US2011298A (en) * 1932-05-18 1935-08-13 Justin E Osbun Blower
US2064845A (en) * 1933-03-31 1936-12-22 Lawton R Moray Propelling device
US2117011A (en) * 1935-02-27 1938-05-10 Ward E Pratt Centrifugal pump
US2352127A (en) * 1942-10-01 1944-06-20 Louis Ruprecht Pulverizing mill rotor
US2731193A (en) * 1951-05-19 1956-01-17 Hayes Ind Inc Air circulating fan construction and method of making the same
FR1360738A (fr) * 1963-02-01 1964-05-15 Renault Perfectionnements aux ventilateurs centrifuges, notamment pour climatiseurs de véhicules automobiles
DE1503633A1 (de) * 1965-08-05 1969-03-13 Union Sils Van De Loo & Co Doppelseitig ansaugendes Laufrad fuer Radialgeblaese,insbesondere fuer Heizluefter
US3951611A (en) * 1974-11-14 1976-04-20 Morrill Wayne J Blank for fan blade
DE2617029A1 (de) * 1975-05-13 1976-12-02 Nippon Denso Co Luefterrad
US4184804A (en) * 1975-10-10 1980-01-22 Nippon Soken, Inc. Rotary electric machine having a cooling fan
JPS5297402A (en) * 1976-02-12 1977-08-16 Aisin Seiki Co Ltd Vane wheel
JPS6012859B2 (ja) * 1976-02-20 1985-04-03 株式会社日本自動車部品総合研究所 冷却フアンを有する回転電機
JPS5371307A (en) * 1976-12-07 1978-06-24 Mitsubishi Electric Corp Manufacturing method of siroccofan
JPS58159934A (ja) * 1982-03-17 1983-09-22 Akaishi Kinzoku Kogyo Kk 冷却フアンとその製法
US4610601A (en) * 1984-07-02 1986-09-09 Gerfast Sten R Method of making axial fan impeller
DD259975A3 (de) * 1986-07-07 1988-09-14 Merbelsrod Geraete Pumpen Veb Blechlaufrad kleiner foerderleistung, insbesondere fuer kuehlmittelpumpen

Also Published As

Publication number Publication date
EP0303924A3 (en) 1989-06-07
ATE68852T1 (de) 1991-11-15
DE3726522A1 (de) 1989-02-23
US5007801A (en) 1991-04-16
DE3865775D1 (de) 1991-11-28
JPS6463699A (en) 1989-03-09
EP0303924A2 (fr) 1989-02-22
ES2027738T3 (es) 1992-06-16

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