WO2006063830A2 - Fan comprising an outer rib with regard to the peripheral annular skirt - Google Patents

Fan comprising an outer rib with regard to the peripheral annular skirt Download PDF

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Publication number
WO2006063830A2
WO2006063830A2 PCT/EP2005/013495 EP2005013495W WO2006063830A2 WO 2006063830 A2 WO2006063830 A2 WO 2006063830A2 EP 2005013495 W EP2005013495 W EP 2005013495W WO 2006063830 A2 WO2006063830 A2 WO 2006063830A2
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WO
WIPO (PCT)
Prior art keywords
fan
radial
rotation
main
annular skirt
Prior art date
Application number
PCT/EP2005/013495
Other languages
French (fr)
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WO2006063830A3 (en
Inventor
Stéphane MOREAU
Manuel Henner
Aurélien LEVASSEUR
Bruno Demory
Original Assignee
Valeo Systemes D'essuyage
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Publication date
Application filed by Valeo Systemes D'essuyage filed Critical Valeo Systemes D'essuyage
Publication of WO2006063830A2 publication Critical patent/WO2006063830A2/en
Publication of WO2006063830A3 publication Critical patent/WO2006063830A3/en

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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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel

Definitions

  • the invention proposes a fan which equips in particular the cooling circuit of a motor vehicle.
  • the invention more particularly proposes a fan, in particular for cooling the motor of a motor vehicle, which comprises:
  • blades distributed angularly about the main axis of rotation, and each of which extends generally radially from the central core towards the outside of the fan,
  • annular radial rib which extends radially outwardly of the fan, from the convex outer cylindrical face of the annular skirt.
  • the rib is positioned at an axial end of the peripheral skirt, so that the section along an axial plane of the assembly formed by the skirt and the rib is shaped "L".
  • the radial rib exerts on the axial end of the skirt mechanical stresses which cause deformation of the annular skirt, and blades, at their outer radial ends.
  • the deformations of the skirt and blades are all the more important as the rotation speed of the fan is high and / or the fan operates under a heavy load.
  • the object of the invention is to propose a fan for which the rib is positioned so as to limit the deformations of the different parts of the fan which come from the inertia forces of the rib.
  • the invention proposes a fan as described above, characterized in that a main radial plane of the radial rib is positioned axially along the main axis of rotation between the two radial end planes of the annular skirt and at a distance from these two planes.
  • the main radial plane of the radial rib is positioned axially close to the center of gravity of the fan blades;
  • the radial main plane of the radial rib is positioned axially so that the center of gravity of the fan blades is located in the main radial plane;
  • the center of gravity of the radial rib is coincident with the center of gravity of the fan blades.
  • FIG. 1 is a schematic perspective view of a fan having an outer radial rib positioned in accordance with the invention
  • FIG. 2 is a section of the fan shown in Figure 1, along a half radial plane defined by the main axis of rotation of the fan.
  • the fan 10 has a central core 12 through which the fan 10 is mounted on a shaft drive (not shown) rotating about a main axis A rotation.
  • the core 12 is an element of revolution coaxial with the main axis A of rotation, and it mainly comprises a central annular radial wall 12a which carries mounting means on the drive shaft (not shown), and a cylindrical wall external 12b.
  • the fan 10 also has blades 14 which are distributed angularly around the main axis A of rotation, and each of which extends radially outwardly from the outer cylindrical wall 12b of the core.
  • the fan 10 is a fan of the helical type, the blades 14 are thus shaped so as to produce an air flow coaxial with the main axis A of rotation during the rotation of the fan 10.
  • the fan 10 also comprises a peripheral annular skirt 16 which extends coaxially with the main axis A of rotation, and whose concave inner cylindrical face 16i is connected to the outer radial end 14a of each blade 14.
  • the annular skirt 16 is generally in the form of a strip connected at its ends, which is delimited axially by two radial end planes Q 1 and Q 2 shown in FIG.
  • the fan 10 is rotatably mounted relative to an outer fairing 18 (Figure 2) which is attached to a body structure member of the vehicle (not shown), and which carries the drive motor of the fan 10 in rotation.
  • the fairing 18 extends radially around the fan 10, and it has a concave inner cylindrical face 18i which is located radially opposite the convex outer cylindrical face 16e of the annular skirt 16.
  • the fan 10 and the fairing 18 are arranged relative to each other so that the concave inner cylindrical face 18i of the shroud 18 is located at a distance from the face outer cylindrical convex 16e of the annular skirt 16, thereby defining an annular conduit 20.
  • the convex outer cylindrical face 16e of the annular skirt 16 carries an external radial rib 22 which extends radially outwardly of the fan 10, interior of the annular duct 20, and in the direction of the concave annular cylindrical face 18i of the fairing 18.
  • the radial rib 22 is flat and extends radially relative to the main axis A of rotation.
  • the invention is not limited to this form of the rib 22, and it can be of different shape without departing from the scope of the invention.
  • the main radial plane P of the radial rib 22 is defined as being the radial plane in which the center of gravity of the radial rib 22 is located.
  • the radial rib 22 is positioned on the convex outer cylindrical face 16e of the annular skirt 16 so that its main radial plane P is positioned axially between the radial planes end Q1, Q2, and away from these planes Q1, Q2.
  • the axial position of the main radial plane P of the radial rib 22 is determined with respect to the position of the center of gravity G of the blades 14 of the fan 10.
  • the plane main radial P of the radial rib 22 is positioned axially so that the center of gravity G of the blades 14 of the fan 10 is located in the main radial plane P.
  • the radial rib 22 is shaped so that its center of gravity coincides with the center of gravity G of the blades 14 of the fan 10, and so that these two centers of gravity G are located in the main axis A of rotation.
  • This positioning of the respective centers of gravity of the radial rib 22 and the fan 10 improves the overall balancing of the fan 10 relative to the main axis A of rotation.
  • the main radial plane P of the radial rib 22 is offset axially relative to the center of gravity G of the fan 10.
  • P of the radial rib 22 is positioned axially close to the center of gravity G of the fan 10.
  • the value of this axial distance between the main radial plane P and the center of gravity G of the blades 14 of the fan 10 is less than or equal to 10% of the distance between the radial end planes Q1 , Q2.

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

Abstract

The invention relates to a fan (10) comprising: a central hub (12); blades (14) angularly distributed about the principal axis of rotation (A); a peripheral annular skirt (16), which is coaxial to the principal axis of rotation (A) and of which an inner cylindrical face is joined to the outer radial end of each blade (14) and is axially delimited by two end radially planes (Q1, Q2), and; an outer annular radial rib (22) that radially extends from the annular skirt (16) toward the outside of the fan (10). The invention is characterized in that the principal radial plane (P) of the radial rib (22) is axially positioned along the principal axis of rotation (A) between the two end radial planes (Q1, Q2) of the annular skirt (16) while situated at a distance from these two planes (Q1, Q2).

Description

"Ventilateur comportant une nervure externe positionnée axialement par rapport à la jupe annulaire périphérique." "Fan having an external rib positioned axially with respect to the peripheral annular skirt."
L'invention propose un ventilateur qui équipe notamment le circuit de refroidissement d'un véhicule automobile.The invention proposes a fan which equips in particular the cooling circuit of a motor vehicle.
L'invention propose plus particulièrement un ventilateur, notamment pour le refroidissement du moteur d'un véhicule automobile, qui comporte :The invention more particularly proposes a fan, in particular for cooling the motor of a motor vehicle, which comprises:
- un noyau central de montage sur un arbre d'entraînement en rotation du ventilateur autour d'un axe principal de rotation,a central mounting core on a drive shaft in rotation of the fan around a main axis of rotation,
- des pales réparties angulairement autour de l'axe principal de rotation, et dont chacune s'étend globalement radialement depuis le noyau central vers l'extérieur du ventilateur,blades distributed angularly about the main axis of rotation, and each of which extends generally radially from the central core towards the outside of the fan,
- une jupe annulaire périphérique, coaxiale à l'axe principal de rotation, dont une face cylindrique interne concave est reliée à l'extrémité radiale externe de chaque pale , et qui est délimitée axialement par deux plans radiaux d'extrémité,a peripheral annular skirt, coaxial with the main axis of rotation, a concave inner cylindrical face of which is connected to the radial outer end of each blade, and which is delimited axially by two radial end planes,
- et une nervure radiale annulaire externe qui s'étend radialement vers l'extérieur du ventilateur, depuis la face cylindrique externe convexe de la jupe annulaire.and an external annular radial rib which extends radially outwardly of the fan, from the convex outer cylindrical face of the annular skirt.
Selon un mode de réalisation connu, la nervure est positionnée à une extrémité axiale de la jupe périphérique, de manière que la section suivant un plan axial de l'ensemble formé par la jupe et la nervure est en forme de "L". Ainsi, lors de la rotation du ventilateur, la nervure radiale exerce sur l'extrémité axiale de la jupe des sollicitations mécaniques qui provoquent une déformation de la jupe annulaire, et des pales, au niveau de leurs extrémités radiales externes.According to a known embodiment, the rib is positioned at an axial end of the peripheral skirt, so that the section along an axial plane of the assembly formed by the skirt and the rib is shaped "L". Thus, during the rotation of the fan, the radial rib exerts on the axial end of the skirt mechanical stresses which cause deformation of the annular skirt, and blades, at their outer radial ends.
Les déformations de la jupe et des pales sont d'autant plus importantes que la vitesse de rotation du ventilateur est élevée et/ou que le ventilateur fonctionne sous une charge importante.The deformations of the skirt and blades are all the more important as the rotation speed of the fan is high and / or the fan operates under a heavy load.
Le rendement du ventilateur est alors lui aussi réduit de manière relativement importante. L'invention a pour but de proposer un ventilateur pour lequel la nervure est positionnée de manière à limiter les déformations des différentes parties du ventilateur qui proviennent des forces d'inertie de la nervure. Dans ce but, l'invention propose un ventilateur tel que décrit précédemment, caractérisé en ce qu'un plan radial principal de la nervure radiale est positionné axialement le long de l'axe principal de rotation entre les deux plans radiaux d'extrémité de la jupe annulaire et à distance de ces deux plans. Selon d'autres caractéristiques de l'invention :The efficiency of the fan is then also reduced relatively significantly. The object of the invention is to propose a fan for which the rib is positioned so as to limit the deformations of the different parts of the fan which come from the inertia forces of the rib. For this purpose, the invention proposes a fan as described above, characterized in that a main radial plane of the radial rib is positioned axially along the main axis of rotation between the two radial end planes of the annular skirt and at a distance from these two planes. According to other features of the invention:
- le plan radial principal de la nervure radiale est positionné axialement à proximité du centre de gravité des pales du ventilateur ;the main radial plane of the radial rib is positioned axially close to the center of gravity of the fan blades;
- le plan radial principal de la nervure radiale est positionné axialement de manière que le centre de gravité des pales du ventilateur est situé dans le plan radial principal ;- The radial main plane of the radial rib is positioned axially so that the center of gravity of the fan blades is located in the main radial plane;
- le centre de gravité de la nervure radiale est confondu avec le centre de gravité des pales du ventilateur.- The center of gravity of the radial rib is coincident with the center of gravity of the fan blades.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux figures annexées parmi lesquelles :Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended figures among which:
- la figure 1 est une représentation schématique en perspective d'un ventilateur comportant une nervure radiale externe positionnée conformément à l'invention ;- Figure 1 is a schematic perspective view of a fan having an outer radial rib positioned in accordance with the invention;
- la figure 2 est une section du ventilateur représenté à la figure 1 , suivant un demi plan radial délimité par l'axe principal de rotation du ventilateur.- Figure 2 is a section of the fan shown in Figure 1, along a half radial plane defined by the main axis of rotation of the fan.
On a représenté aux figures un ventilateur 10 d'un système de refroidissement du moteur d'un véhicule automobile (non représenté).There is shown in the figures a fan 10 of a motor cooling system of a motor vehicle (not shown).
Le ventilateur 10 comporte un noyau central 12 par l'intermédiaire duquel le ventilateur 10 est monté sur un arbre d'entraînement (non représenté) en rotation autour d'un axe A principal de rotation.The fan 10 has a central core 12 through which the fan 10 is mounted on a shaft drive (not shown) rotating about a main axis A rotation.
Le noyau 12 est un élément de révolution coaxial à l'axe A principal de rotation, et il comporte principalement une paroi radiale annulaire centrale 12a qui porte des moyens de montage sur l'arbre d'entraînement (non représentés), et une paroi cylindrique externe 12b.The core 12 is an element of revolution coaxial with the main axis A of rotation, and it mainly comprises a central annular radial wall 12a which carries mounting means on the drive shaft (not shown), and a cylindrical wall external 12b.
Le ventilateur 10 comporte aussi des pales 14 qui sont réparties angulairement autour de l'axe principal A de rotation, et dont chacune s'étend radialement vers l'extérieur depuis la paroi cylindrique externe 12b du noyau.The fan 10 also has blades 14 which are distributed angularly around the main axis A of rotation, and each of which extends radially outwardly from the outer cylindrical wall 12b of the core.
Le ventilateur 10 est un ventilateur du type hélicoïdal, les pales 14 sont donc conformées de manière à produire un flux d'air coaxial à l'axe principal A de rotation lors de la rotation du ventilateur 10.The fan 10 is a fan of the helical type, the blades 14 are thus shaped so as to produce an air flow coaxial with the main axis A of rotation during the rotation of the fan 10.
Le ventilateur 10 comporte aussi une jupe annulaire périphérique 16 qui s'étend coaxialement à l'axe principal A de rotation, et dont la face cylindrique interne concave 16i est reliée à l'extrémité radiale externe 14a de chaque pale 14. La jupe annulaire 16 est globalement en forme d'un bandeau relié à ses extrémités, qui est délimité axialement par deux plans radiaux d'extrémité Q 1 et Q2 représentés à la figure 2.The fan 10 also comprises a peripheral annular skirt 16 which extends coaxially with the main axis A of rotation, and whose concave inner cylindrical face 16i is connected to the outer radial end 14a of each blade 14. The annular skirt 16 is generally in the form of a strip connected at its ends, which is delimited axially by two radial end planes Q 1 and Q 2 shown in FIG.
Le ventilateur 10 est monté à rotation par rapport à un carénage extérieur 18 (figure 2) qui est fixé à un élément de structure de caisse du véhicule (non représenté), et qui porte notamment le moteur d'entraînement du ventilateur 10 en rotation.The fan 10 is rotatably mounted relative to an outer fairing 18 (Figure 2) which is attached to a body structure member of the vehicle (not shown), and which carries the drive motor of the fan 10 in rotation.
Le carénage 18 s'étend radialement autour du ventilateur 10, et il comporte une face cylindrique interne concave 18i qui est située radialement en vis-à-vis de la face cylindrique externe convexe 16e de la jupe annulaire 16.The fairing 18 extends radially around the fan 10, and it has a concave inner cylindrical face 18i which is located radially opposite the convex outer cylindrical face 16e of the annular skirt 16.
Le ventilateur 10 et le carénage 18 sont agencés l'un par rapport à l'autre de manière que la face cylindrique interne concave 18i du carénage 18 est située à distance de la face cylindrique externe convexe 16e de la jupe annulaire 16, délimitant ainsi un conduit annulaire 20.The fan 10 and the fairing 18 are arranged relative to each other so that the concave inner cylindrical face 18i of the shroud 18 is located at a distance from the face outer cylindrical convex 16e of the annular skirt 16, thereby defining an annular conduit 20.
Lorsque ventilateur 10 produit le flux d'air, la pression d'air en aval du ventilateur 12 est supérieure à la pression d'air en amont du ventilateur 12.When fan 10 produces the air flow, the air pressure downstream of the fan 12 is greater than the air pressure upstream of the fan 12.
La différence de pression d'air entre l'amont et l'aval du ventilateur 12 favorise l'écoulement d'une partie du flux d'air dans le conduit annulaire 20, et à contre courant par rapport au sens d'écoulement du flux d'air. Pour limiter Ie débit de cette partie du flux d'air dans le conduit annulaire 20, la face cylindrique externe convexe 16e de la jupe annulaire 16 porte une nervure radiale externe 22 qui s'étend radialement vers l'extérieur du ventilateur 10, à l'intérieur du conduit annulaire 20, et en direction de la face cylindrique annulaire concave 18i du carénage 18.The difference in air pressure between the upstream and downstream of the fan 12 promotes the flow of a portion of the air flow in the annular duct 20, and against the current relative to the flow direction of the flow air. To limit the flow rate of this portion of the air flow in the annular duct 20, the convex outer cylindrical face 16e of the annular skirt 16 carries an external radial rib 22 which extends radially outwardly of the fan 10, interior of the annular duct 20, and in the direction of the concave annular cylindrical face 18i of the fairing 18.
Ici, et selon un mode de réalisation préféré, la nervure radiale 22 est plane et elle s'étend radialement par rapport à l'axe principal A de rotation. Cependant, il sera compris que l'invention n'est pas limitée à cette forme de la nervure 22, et qu'elle peut être de forme différente sans sortir du domaine de l'invention.Here, and according to a preferred embodiment, the radial rib 22 is flat and extends radially relative to the main axis A of rotation. However, it will be understood that the invention is not limited to this form of the rib 22, and it can be of different shape without departing from the scope of the invention.
On définit le plan radial principal P de la nervure radiale 22 comme étant le plan radial dans lequel est situé le centre de gravité de la nervure radiale 22.The main radial plane P of the radial rib 22 is defined as being the radial plane in which the center of gravity of the radial rib 22 is located.
Conformément à l'invention, et comme on peut le voir à la figure 2, la nervure radiale 22 est positionnée sur la face cylindrique externe convexe 16e de la jupe annulaire 16 de manière que son plan radial principal P est positionné axialement entre les plans radiaux d'extrémité Q1 , Q2, et à distance de ces plans Q1 , Q2. La section axiale de l'ensemble formé par la jupe annulaireAccording to the invention, and as can be seen in FIG. 2, the radial rib 22 is positioned on the convex outer cylindrical face 16e of the annular skirt 16 so that its main radial plane P is positioned axially between the radial planes end Q1, Q2, and away from these planes Q1, Q2. The axial section of the assembly formed by the annular skirt
16 et la nervure radiale 22, est ainsi globalement en forme d'un "T", dont la branche supérieure est parallèle à l'axe A principal de rotation, et dont la base est orientée radialement par rapport à l'axe A principal de rotation. Un tel positionnement du plan principal P de la nervure radiale 22 par rapport à la jupe annulaire 16 permet de répartir les sollicitations mécaniques exercées par la nervure radiale 22 sur la jupe annulaire 16, lors de la rotation du ventilateur 10, de manière à limiter les déformations de la jupe annulaire 16.16 and the radial rib 22, is thus generally in the form of a "T", whose upper branch is parallel to the main axis A of rotation, and whose base is oriented radially relative to the main axis A of rotation. Such positioning of the main plane P of the radial rib 22 relative to the annular skirt 16 distributes the mechanical stresses exerted by the radial rib 22 on the annular skirt 16, during the rotation of the fan 10, so as to limit the deformations of the annular skirt 16.
Selon un aspect préféré de l'invention, la position axiale du plan radial principal P de la nervure radiale 22 est déterminée par rapport à la position du centre de gravité G des pales 14 du ventilateur 10. Selon un premier mode de réalisation , le plan radial principal P de la nervure radiale 22 est positionné axialement de manière que le centre de gravité G des pales 14 du ventilateur 10 est situé dans le plan radial principal P.According to a preferred aspect of the invention, the axial position of the main radial plane P of the radial rib 22 is determined with respect to the position of the center of gravity G of the blades 14 of the fan 10. According to a first embodiment, the plane main radial P of the radial rib 22 is positioned axially so that the center of gravity G of the blades 14 of the fan 10 is located in the main radial plane P.
Selon une première variante de ce premier mode de réalisation , la nervure radiale 22 est conformée de manière que son centre de gravité est confondu avec le centre de gravité G des pales 14 du ventilateur 10, et de manière que ces deux centres de gravité G sont situés dans l'axe principal A de rotation.According to a first variant of this first embodiment, the radial rib 22 is shaped so that its center of gravity coincides with the center of gravity G of the blades 14 of the fan 10, and so that these two centers of gravity G are located in the main axis A of rotation.
Ce positionnement des centres de gravité respectifs de la nervure radiale 22 et du ventilateur 10 permet d'améliorer l'équilibrage général du ventilateur 10 par rapport à l'axe principal A de rotation.This positioning of the respective centers of gravity of the radial rib 22 and the fan 10 improves the overall balancing of the fan 10 relative to the main axis A of rotation.
Selon une autre variante de réalisation de l'invention , le plan radial principal P de la nervure radiale 22 est décalé axialement par rapport au centre de gravité G du ventilateur 10.According to another embodiment of the invention, the main radial plane P of the radial rib 22 is offset axially relative to the center of gravity G of the fan 10.
Cependant, la distance axiale entre le plan radial principalHowever, the axial distance between the main radial plane
P de la nervure radiale 22 et le centre de gravité G du ventilateurP of the radial rib 22 and the center of gravity G of the fan
10 est relativement limitée, de manière que le plan radial principal10 is relatively limited, so that the main radial plane
P de la nervure radiale 22 est positionné axialement à proximité du centre de gravité G du ventilateur 10.P of the radial rib 22 is positioned axially close to the center of gravity G of the fan 10.
A titre d'exemple non limitatif, la valeur de cette distance axiale entre le plan radial principal P et le centre de gravité G des pales 14 du ventilateur 10 est inférieure ou égale à 10% de la distance entre les plans radiaux d'extrémité Q1 , Q2. By way of nonlimiting example, the value of this axial distance between the main radial plane P and the center of gravity G of the blades 14 of the fan 10 is less than or equal to 10% of the distance between the radial end planes Q1 , Q2.

Claims

REVENDICATIONS
1 . Ventilateur (10), notamment pour le refroidissement du moteur d'un véhicule automobile, qui comporte : - un noyau central (12) de montage sur un arbre d'entraînement en rotation du ventilateur (10) autour d'un axe (A) principal de rotation,1. Fan (10), in particular for cooling the motor of a motor vehicle, comprising: - a central core (12) for mounting on a drive shaft in rotation of the fan (10) about an axis (A) main rotation,
- des pales (14) réparties angulairement autour de l'axe (A) principal de rotation, et dont chacune s'étend globalement radialement depuis le noyau central (12) vers l'extérieur du ventilateur (10),- blades (14) angularly distributed about the main axis (A) of rotation, and each of which extends generally radially from the central core (12) to the outside of the fan (10),
- une jupe annulaire (16) périphérique, coaxiale à l'axe (A) principal de rotation, dont une face cylindrique interne concave est reliée à l'extrémité radiale externe de chaque pale (14), et qui est délimitée axialement par deux plans radiaux d'extrémité- A peripheral annular skirt (16), coaxial with the main axis (A) of rotation, a concave inner cylindrical face is connected to the outer radial end of each blade (14), and which is defined axially by two planes end radials
(Q 1 , Q2),(Q 1, Q 2)
- et une nervure radiale (22) annulaire externe qui s'étend radialement vers l'extérieur du ventilateur (1 0), depuis la face cylindrique externe convexe (16e) de la jupe annulaire (16), caractérisé en ce qu'un plan radial (P) principal de la nervure radiale (22) est positionné axialement le long de l'axe (A) principal de rotation entre les deux plans radiaux d'extrémité (Q1 , Q2) de la jupe annulaire (16) et à distance de ces deux plans (Q1 , Q2).and an outer annular radial rib (22) extending radially outwardly of the fan (1 0) from the convex outer cylindrical face (16e) of the annular skirt (16), characterized in that a plane radial axis (P) of the radial rib (22) is positioned axially along the main axis (A) of rotation between the two radial end planes (Q1, Q2) of the annular skirt (16) and at a distance of these two planes (Q1, Q2).
2. Ventilateur (10) selon la revendication précédente, caractérisé en ce que le plan radial (P) principal de la nervure radiale (22) est positionné axialement à proximité du centre de gravité (G) des pales du ventilateur (10).2. Fan (10) according to the preceding claim, characterized in that the radial plane (P) of the main radial rib (22) is positioned axially close to the center of gravity (G) of the fan blades (10).
3. Ventilateur (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que le plan radial (P) principal de la nervure radiale (22) est positionné axialement de manière que le centre de gravité (G) des pales du ventilateur (10) est situé dans le plant radial (P) principal.3. Fan (10) according to any one of the preceding claims, characterized in that the radial plane (P) of the main radial rib (22) is positioned axially so that the center of gravity (G) of the fan blades (10) is located in the main radial plant (P).
4. Ventilateur (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que le centre de gravité de la nervure radiale (22) est confondu avec le centre de gravité (G) des pales du ventilateur (10). 4. Fan (10) according to any one of the preceding claims, characterized in that the center of gravity of the radial rib (22) coincides with the center of gravity (G) of the fan blades (10).
PCT/EP2005/013495 2004-12-17 2005-12-15 Fan comprising an outer rib with regard to the peripheral annular skirt WO2006063830A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR04/13473 2004-12-17
FR0413473A FR2879683B1 (en) 2004-12-17 2004-12-17 FAN COMPRISING AN EXTERNAL RIB AXIALLY POSITIONED IN RELATION TO THE PERIPHERAL ANNULAR SKIRT

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WO2006063830A2 true WO2006063830A2 (en) 2006-06-22
WO2006063830A3 WO2006063830A3 (en) 2006-09-08

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FR (1) FR2879683B1 (en)
WO (1) WO2006063830A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886873A1 (en) * 2013-12-20 2015-06-24 MAHLE Behr GmbH & Co. KG Axial ventilator

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US5740766A (en) * 1997-03-25 1998-04-21 Behr America, Inc. Automotive fan and shroud assembly
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US4962734A (en) * 1990-03-14 1990-10-16 Paccar Inc. Electrically driven, circumferentially supported fan
US5740766A (en) * 1997-03-25 1998-04-21 Behr America, Inc. Automotive fan and shroud assembly
US20020164247A1 (en) * 2001-05-02 2002-11-07 Sylvain Nadeau Turbomachine with double-faced rotor-shroud seal structure
US6428277B1 (en) * 2001-05-17 2002-08-06 Siemens Vdo Automotive Inc. High speed, low torque axial flow fan

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP2886873A1 (en) * 2013-12-20 2015-06-24 MAHLE Behr GmbH & Co. KG Axial ventilator

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FR2879683A1 (en) 2006-06-23
WO2006063830A3 (en) 2006-09-08

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