EP0547253B1 - Appareil d'homogénéisation d'un courant pour un ventilateur - Google Patents

Appareil d'homogénéisation d'un courant pour un ventilateur Download PDF

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Publication number
EP0547253B1
EP0547253B1 EP19910121489 EP91121489A EP0547253B1 EP 0547253 B1 EP0547253 B1 EP 0547253B1 EP 19910121489 EP19910121489 EP 19910121489 EP 91121489 A EP91121489 A EP 91121489A EP 0547253 B1 EP0547253 B1 EP 0547253B1
Authority
EP
European Patent Office
Prior art keywords
webs
grid
holding ring
flow director
radial
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
EP19910121489
Other languages
German (de)
English (en)
Other versions
EP0547253A1 (fr
Inventor
Karl Dipl.-Ing. Jakob
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.)
Sued-Electric GmbH
Original Assignee
Sued-Electric GmbH
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 Sued-Electric GmbH filed Critical Sued-Electric GmbH
Priority to EP19910121489 priority Critical patent/EP0547253B1/fr
Priority to DE59105740T priority patent/DE59105740D1/de
Publication of EP0547253A1 publication Critical patent/EP0547253A1/fr
Application granted granted Critical
Publication of EP0547253B1 publication Critical patent/EP0547253B1/fr
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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps

Definitions

  • the invention relates to a flow straightener for a fan as is known from EP-A-0 387 987.
  • This document describes a stabilizer ring for a fan mounting device for use in a motor vehicle, in which the fan is used to generate an air flow which is sucked by the fan through a water-cooled radiator and blown onto an internal combustion engine. It contains a flow straightener made of plastic material with a lattice structure consisting of annular webs and radial webs, the latter of which extend between a central mounting hub for an engine and a closed peripheral wall.
  • the openings, which are delimited by the webs have cross sections of such a size that you can easily reach through with your fingers, so that there is a risk of injury when the fan is running.
  • a fan for installation in a wall opening containing a retaining ring of essentially circular outline with an axially extending flange and an adjoining, radially outwardly extending flange ring, one in the center of the retaining ring arranged electric motor with fan blades, which is supported by the retaining ring, and a grid which essentially fills the space between the electric motor and the retaining ring and has a central opening into which the electric motor is inserted.
  • the grille consists of vertically intersecting webs, which, seen in the direction of the fan, have a depth that is sufficiently large to rectify the rotational components in the air flow generated by the fan, which is thrown by the fan through the grille, and thereby the throwing distance of the Enlarge fan.
  • the retaining ring and grille are to be referred to below as flow straighteners.
  • Flow straighteners of the aforementioned type can be produced in particular in the spraying process using a slide-free injection mold.
  • the production of this injection mold itself is very complex because a large number of milling processes for the production of the grooves that form the webs during the injection process have to be carried out for this.
  • the maximum distance between the webs is specified by safety standards (protection of the fan blades against contact), so that as the dimensions of the flow straightener increase, the effort involved in producing the injection mold increases accordingly.
  • safety standards protection of the fan blades against contact
  • the invention has for its object to design a flow straightener of the aforementioned type so that the shape used for its manufacture is easier to manufacture and it has a reduced flow resistance.
  • a flow straightener of the first-mentioned type can be produced with a shape which has a multiplicity of circularly running and a comparatively small number of radially running grooves which form the webs in the injection molding process.
  • the circular grooves can be formed by turning, while the number of milling operations required is limited to the formation of the comparatively few radial grooves.
  • suitable plastics are chosen to create the flow straightener, it can be made sufficiently rigid and resistant that it can carry the electric motor to be arranged in its central opening without the aid of stiffening elements to be attached separately.
  • FIGS. 1 and 2 an outer retaining ring, generally designated 1, of circular outline, which has an axially extending flange 2 of essentially cylindrical shape and a radial flange ring 3 adjoining it on the outside. 2, the transition between the axial flange 2 and the radial flange ring 3 is rounded in order to form a nozzle-like inlet for the air to be conveyed by the fan (not shown).
  • the radial flange ring 3 is provided with a plurality of mounting holes 4, which can be elongated (Fig. 1). It is stiffened by a plurality of ribs 5 which extend axially and radially between the cylindrical flange 2 and the radial flange ring 3.
  • a grating 6 is formed in one piece with the holding ring 1 and has a central opening 7 which serves to receive an electric motor (not shown).
  • the grid 6 consists of a plurality of concentrically and parallel to each other extending ring webs 8, which are connected by eight radial webs 9 and 10 in the example shown. These radial webs are arranged at equal angular distances from one another.
  • the inner boundary of the grid 6 is formed by an inner retaining ring 11, in the area of which radial bores 10 each have mounting bores for fastening the electric motor mentioned.
  • the webs 10 each consist of two webs 10a and 10b which extend parallel and at a small distance from one another and which h. they are twin webs to increase the rigidity of the arrangement.
  • the space between the parallel webs 10a and 10b is advantageously closed by a base 10c (FIG. 2), so that starting from the mounting holes 12 in the direction of the outer retaining ring 1, cross-sectionally U-shaped radial carriers result , which have a particularly high rigidity and can hold the electric motor effectively.
  • the simple webs 9 and the twin webs 10 alternate in the circumferential direction.
  • the outermost ring web 13 is connected to the radial flange ring 3 by a plurality of short radial webs 14, which extend at a close distance from one another.
  • This plurality of radial webs 14 also extend in the axial direction, as shown in FIG. 2, and together they form the axial flange ring 2, which thus has a large number of openings 15 (FIG. 3).
  • the air flow rectifying grid is formed by a plurality of webs 15, which are orthogonal to one another at a close mutual distance in order to ensure protection against contact for the fan blades (not shown).
  • the openings between the webs are elongated rectangular, possibly with short connecting webs, as shown, if this should be necessary for reasons of stability.
  • the openings that are framed by the webs 15 can be of different lengths, as indicated in FIG. 4 at the top right and bottom left.
  • This grille also sufficiently removes the outwardly swirling flow components from the air flow generated by the fan in order to increase the throwing distance thereof, and opposes this air flow with only a slight flow resistance and can also be produced with an easy-to-produce injection mold.
  • the remaining features of this embodiment of the invention are comparable to those of the first embodiment and therefore do not need to be explained again here.
  • the crosspieces are slightly conical in cross section with a taper of about 3 °.
  • a fiber-reinforced plastic material is preferably used as the material from which the flow straightener is made.

Landscapes

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

Claims (6)

  1. Appareil d'homogénéisation d'un courant pour un ventilateur, constitué d'un anneau de support externe (1) et d'une grille (6) entourée par celui-ci et pourvue d'une ouverture de montage (7) centrale pour un moteur électrique, cette grille comprenant des traverses (8-10) dont la profondeur, qui s'étend à peu près perpendiculairement au plan déployé par la grille (6), est d'environ 12 à 15 mm, et comprenant un grand nombre de traverses circulaires (8) qui s'étendent de manière concentrique, à une distance radiale les unes par rapport aux autres, et présentent entre elles une distance d'environ 8 à 10 mm, ainsi que huit traverses radiales (9, 10) réparties dans la direction circonférentielle, les traverses radiales (9, 10) reliant les traverses circulaires (8) les unes aux autres ainsi qu'à un anneau de support (11) interne entourant l'ouverture de montage (7) et à l'anneau de support externe (1), une traverse radiale (10) sur deux étant formée par deux âmes (10a, 10b) qui s'étendent parallèlement l'une à l'autre avec un écartement réduit entre elles et sont reliées l'une à l'autre par un fond (10c) qui forme, avec ces deux âmes (10a, 10b) une section transversale ayant, dans l'ensemble, une forme en U.
  2. Appareil d'homogénéisation d'un courant pour un ventilateur, constitué d'un anneau de support externe (1) et d'une grille (6) entourée par celui-ci et pourvue d'une ouverture de montage (7) centrale pour un moteur électrique, cette grille comprenant un grand nombre de traverses (15) qui s'étendent de manière orthogonale les unes par rapport aux autres et dont la profondeur, qui s'étend à peu près perpendiculairement au plan déployé par la grille (6), est d'environ 10 à 15 mm, qui entourent, respectivement, de minces ouvertures rectangulaires et relient un anneau de support (11) interne entourant l'ouverture de montage (7) à l'anneau de support externe (1), deux traverses (15) voisines l'une de l'autre qui entourent une des ouvertures rectangulaires ayant entre elles une distance d'environ 8 à 10 mm.
  3. Appareil d'homogénéisation d'un courant selon l'une des revendications 1 ou 2, qui est formé d'une unité intégrale fabriquée par un procédé de moulage par injection.
  4. Appareil d'homogénéisation d'un courant selon l'une des revendications précédentes, dans lequel les traverses (8, 9, 10, 15) ont une section transversale légèrement conique.
  5. Appareil d'homogénéisation d'un courant selon l'une des revendications précédentes, dans lequel des alésages (12) destinés à recevoir des éléments de montage sont prévus dans la région des extrémités intérieures d'au moins quelques unes des traverses radiales (10).
  6. Appareil d'homogénéisation d'un courant selon l'une des revendications précédentes, dans lequel l'anneau de support externe (1) est formé par une bride (2) s'étendant de manière axiale et un anneau de bride (3) contigu à cette bride de manière radiale vers l'extérieur et formant une collerette de montage.
EP19910121489 1991-12-14 1991-12-14 Appareil d'homogénéisation d'un courant pour un ventilateur Expired - Lifetime EP0547253B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19910121489 EP0547253B1 (fr) 1991-12-14 1991-12-14 Appareil d'homogénéisation d'un courant pour un ventilateur
DE59105740T DE59105740D1 (de) 1991-12-14 1991-12-14 Strömungsgleichrichter für einen Ventilator.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910121489 EP0547253B1 (fr) 1991-12-14 1991-12-14 Appareil d'homogénéisation d'un courant pour un ventilateur

Publications (2)

Publication Number Publication Date
EP0547253A1 EP0547253A1 (fr) 1993-06-23
EP0547253B1 true EP0547253B1 (fr) 1995-06-14

Family

ID=8207434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910121489 Expired - Lifetime EP0547253B1 (fr) 1991-12-14 1991-12-14 Appareil d'homogénéisation d'un courant pour un ventilateur

Country Status (2)

Country Link
EP (1) EP0547253B1 (fr)
DE (1) DE59105740D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102370A1 (de) 2014-02-24 2015-08-27 Ebm-Papst St. Georgen Gmbh & Co. Kg Strömungsgleichrichter sowie Lüfteranordnung mit Strömungsgleichrichter
CN105102825A (zh) * 2013-03-15 2015-11-25 依必安派特穆尔芬根有限两合公司 具有流量矫直器的风扇布置
DE102017119213A1 (de) 2017-08-22 2019-02-28 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh Strömungsgitter zur Reduktion der Wirbelgröße in einer Fluidströmung
EP4390143A1 (fr) * 2022-12-21 2024-06-26 ebm-papst Mulfingen GmbH & Co. KG Dispositif de guidage de flux et unité de ventilateur dotée du dispositif de guidage de flux

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337631A1 (de) * 1993-11-04 1995-05-11 Kloeckner Humboldt Deutz Ag Schutzvorrichtung für ein Gebläse einer Brennkraftmaschine
DE19753373A1 (de) * 1996-12-10 1998-06-25 Papst Motoren Gmbh & Co Kg Axiallüfter-Gehäuse
FR2763367B1 (fr) * 1997-05-14 2006-06-16 Max Sardou Ventilateur a faible niveau sonore peu sensible aux pertubations amont
IT1294180B1 (it) * 1997-09-03 1999-03-22 Lucio Befera Dispositivo per il supporto dell'organo motore di ventilatori e simili
IT250946Y1 (it) * 2000-01-28 2003-10-22 Elektromec S P A Gruppo ventilante integrato per cappe da cucina
TW511880U (en) * 2002-01-18 2002-11-21 Foxconn Prec Components Co Ltd Assembly of heat dissipation apparatus
CN1932302B (zh) * 2005-09-12 2012-04-25 建准电机工业股份有限公司 具导流出风口的散热扇

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB813062A (en) * 1956-07-13 1959-05-06 Gunnar Frederik Byrn Ventilating fan
GB575561A (en) * 1944-03-24 1946-02-22 Maurice Geoffrey Woods Improvements in and relating to electric fans
US2936109A (en) * 1954-02-15 1960-05-10 Gen Electric Deflector for fans and the like
DE3542214A1 (de) * 1984-12-03 1986-06-05 Papst-Motoren GmbH & Co KG, 7742 St Georgen Ventilator
DE9002321U1 (de) * 1989-03-02 1990-05-03 Süd-Electric GmbH, 8011 Kirchseeon Ventilator
EP0387987A3 (fr) * 1989-03-13 1990-11-28 General Motors Corporation Anneau stabilisateur pour appareil de montage d'un ventilateur

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105102825A (zh) * 2013-03-15 2015-11-25 依必安派特穆尔芬根有限两合公司 具有流量矫直器的风扇布置
DE102014102370A1 (de) 2014-02-24 2015-08-27 Ebm-Papst St. Georgen Gmbh & Co. Kg Strömungsgleichrichter sowie Lüfteranordnung mit Strömungsgleichrichter
WO2015124237A1 (fr) 2014-02-24 2015-08-27 Ebm-Papst St. Georgen Gmbh & Co. Kg Redresseur de flux et dispositif ventilateur équipé d'un redresseur de flux
DE102017119213A1 (de) 2017-08-22 2019-02-28 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh Strömungsgitter zur Reduktion der Wirbelgröße in einer Fluidströmung
DE102017119213B4 (de) 2017-08-22 2019-10-31 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh Strömungsgitter zur Reduktion der Wirbelgröße in einer Fluidströmung
EP4390143A1 (fr) * 2022-12-21 2024-06-26 ebm-papst Mulfingen GmbH & Co. KG Dispositif de guidage de flux et unité de ventilateur dotée du dispositif de guidage de flux

Also Published As

Publication number Publication date
DE59105740D1 (de) 1995-07-20
EP0547253A1 (fr) 1993-06-23

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