EP0543694A1 - Shrouding for a fan and its application in an automobile engine fan - Google Patents

Shrouding for a fan and its application in an automobile engine fan Download PDF

Info

Publication number
EP0543694A1
EP0543694A1 EP92402962A EP92402962A EP0543694A1 EP 0543694 A1 EP0543694 A1 EP 0543694A1 EP 92402962 A EP92402962 A EP 92402962A EP 92402962 A EP92402962 A EP 92402962A EP 0543694 A1 EP0543694 A1 EP 0543694A1
Authority
EP
European Patent Office
Prior art keywords
axis
ferrule
wall
connection zone
bead
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
EP92402962A
Other languages
German (de)
French (fr)
Other versions
EP0543694B1 (en
Inventor
Jean-Claude Vera
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.)
ECIA Equipements et Composants pour lIndustrie Automobile SA
Original Assignee
ECIA Equipements et Composants pour lIndustrie Automobile SA
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 ECIA Equipements et Composants pour lIndustrie Automobile SA filed Critical ECIA Equipements et Composants pour lIndustrie Automobile SA
Publication of EP0543694A1 publication Critical patent/EP0543694A1/en
Application granted granted Critical
Publication of EP0543694B1 publication Critical patent/EP0543694B1/en
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
    • F04D29/40—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
    • F04D29/545—Ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • 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
    • 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
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/914—Device to control boundary layer

Definitions

  • This fairing comprises a fixed part or diffuser with a cylindrical skirt and a mobile part with a peripheral profiled annular ferrule which is subject to the heads of the propeller blades and which is mounted coaxially with this skirt so as to be able to rotate there.
  • the movable part or propeller 20 comprises a profiled annular ferrule 21, blades 22 and a hub 23. As can be seen, this ferrule is delimited by an interior wall 2101, an exterior wall 2102 and a rear edge 2103.
  • This ferrule 21 comprises a flange 211, a flange 212 and an extension 213.
  • Each blade 22 comprises a head 221 towards the outside and a foot 222 towards the axis, a leading edge 223 and a trailing edge 224.
  • the heads 221 of the blades are intended for be subject to the ferrule 21 while their feet 222 are intended to be subject to the hub 23.
  • the zone 13 for connecting the diffuser 10 is delimited in particular by an internal surface 131 at the end 1310 upstream.

Landscapes

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

Abstract

The fairing, comprising inter alia a fixed part made of a diffuser which has a fixing base (11), a funnel nozzle (12), a connection zone (13), a cylindrical skirt (14) and a movable part capable of rotating about an axis (200) which has a peripheral shaped annular hoop (21) which is intended to be fastened securely to tips of blades of a fan which is mounted coaxially in this skirt (14) so as to be able to rotate therein characterised in that, taking as references the direction of flow and the axis (200), this hoop (21) is delimited by an inner wall (2101) an outer wall (2102) and a rear section (2103), this connection zone (13) is delimited particularly by an inner surface (131) with an upstream end (1310), and in that this rear section (2103) of the hoop (21) is located in a plane (P) which is perpendicular to the axis (200) and which passes practically through the upstream end (1310) of the inner surface (131) of the connection zone (13). <IMAGE>

Description

La présente invention concerne les ventilateurs et, plus particulièrement, un carénage perfectionné pour ceux-ci et son application aux groupes motoventilateurs par exemple d'automobile.The present invention relates to fans and, more particularly, an improved fairing for the latter and its application to fan groups, for example of cars.

Dans de nombreux secteurs industriels, il est nécessaire d'associer un ventilateur à un radiateur ou à un autre type d'échangeur thermique. C'est par exemple le cas dans l'industrie automobile où des groupes motoventilateurs équipent les radiateurs utilisés pour le refroidissement du moteur thermique d'entraînement des véhicules ou bien les échangeurs thermiques utilisés par exemple pour la climatisation de l'habitacle des véhicules.In many industrial sectors, it is necessary to associate a fan with a radiator or another type of heat exchanger. This is for example the case in the automotive industry where motorized fan units are fitted to the radiators used for cooling the thermal engine for driving vehicles or else to the heat exchangers used for example for air conditioning the passenger compartment of vehicles.

Comme il est connu, il n'est pas facile de maîtriser les veines d'écoulement de l'air brassé par une hélice de ventilateur afin d'en améliorer l'efficacité, à débit d'air constant, sans pour autant augmenter l'énergie nécessaire à l'entraînement de l'hélice du ventilateur et aussi sans accroître de manière notable le niveau sonore en cours de fonctionnement.As is known, it is not easy to control the flow veins of the air stirred by a fan propeller in order to improve the efficiency thereof, at constant air flow, without increasing the energy required to drive the fan propeller and also without significantly increasing the noise level during operation.

Diverses tentatives ont été faites. Les unes portent sur le profil des pales de l'hélice, d'autres portent sur le carénage de l'hélice fait alors d'une partie fixe associée au radiateur ou à l'échangeur et d'une partie mobile associée aux têtes des pales du ventilateur.Various attempts have been made. Some relate to the profile of the blades of the propeller, others relate to the fairing of the propeller then made of a fixed part associated with the radiator or the exchanger and a mobile part associated with the heads of the blades. of the fan.

Une solution du premier type est, par exemple, illustrée par le document FR 2 603 953. Ce document propose de donner aux pales de l'hélice un profil tel que les filets d'air proches du moyeu qui porte les pieds des pales décrivent des trajectoires centripètes, alors que les filets d'air proches des têtes des pales suivent des trajectoires centrifuges. Une solution de l'autre type est, par exemple illustré par le document EP 0 026 997. Ce document propose d'utiliser un carénage pour un ventilateur aspirant, placé en aval du radiateur dans le sens de l'écoulement de l'air. Ce carénage comprend une partie fixe ou diffuseur avec une jupe cylindrique et une partie mobile avec une virole annulaire profilée périphérique qui est assujettie aux têtes des pales de l'hélice et qui est montée coaxialement à cette jupe de manière à pouvoir y tourner. Pour tenter de prévenir les contre-courants perturbateurs qui circulent entre jupe et virole de l'aval vers l'amont, on fait en sorte que les veines d'air les plus proches des têtes des pales soient éjectées pour faire une barrière fluide qui prévient la circulation de tels contre-courants perturbateurs. On observera toutefois que cette solution qui, en principe, empêche un reflux intempestif du fluide brassé, nécessite un jeu relativement important entre la jupe et la virole.A solution of the first type is, for example, illustrated by the document FR 2 603 953. This document proposes to give the blades of the propeller a profile such that the air streams close to the hub which carries the feet of the blades describe centripetal trajectories, while the air streams near the blade heads follow centrifugal trajectories. A solution of the other type is, for example illustrated by document EP 0 026 997. This document proposes using a shroud for an extractor fan, placed downstream of the radiator in the direction of the flow of air. This fairing comprises a fixed part or diffuser with a cylindrical skirt and a mobile part with a peripheral profiled annular ferrule which is subject to the heads of the propeller blades and which is mounted coaxially with this skirt so as to be able to rotate there. In an attempt to prevent disruptive counter-currents flowing between the skirt and the ferrule from downstream to upstream, we make sure that the air streams closest to the blade heads are ejected to form a fluid barrier which prevents the circulation of such disruptive counter-currents. It will however be observed that this solution which, in principle, prevents an inadvertent reflux of the stirred fluid, requires a relatively large clearance between the skirt and the shell.

Le but de l'invention est de remédier à ce type de difficulté, tout spécialement dans le cas où un ventilateur est placé en amont, dans le sens d'écoulement du fluide, d'un radiateur ou d'un échangeur.The object of the invention is to remedy this type of difficulty, especially in the case where a fan is placed upstream, in the direction of flow of the fluid, of a radiator or of an exchanger.

L'invention a pour objet un carénage perfectionné pour ventilateur comprenant, entre autres, une partie fixe faite d'un diffuseur qui présente une embase de fixation, une buse-entonnoir, une zone de raccordement, une jupe cylindrique, et une partie mobile apte à tourner selon un axe qui présente une virole annulaire profilée périphérique qui est destinée à être assujettie à des têtes de pales d'une hélice et qui est montée coaxialement dans cette jupe de manière à pouvoir y tourner. Ce carénage est caractérisé en ce que, en prenant pour références le sens de l'écoulement et l'axe, cette virole est délimitée par une paroi intérieure, une paroi extérieure et une tranche postérieure, cette zone de raccordement est délimitée notamment par une surface interne avec une extrémité amont , et en ce que cette tranche postérieure de la virole est située dans un plan qui est perpendiculaire à l'axe et qui passe pratiquement par l'extrémité amont de la surface interne de la zone de raccordement.The subject of the invention is an improved fan fairing comprising, inter alia, a fixed part made of a diffuser which has a fixing base, a funnel nozzle, a connection zone, a cylindrical skirt, and a movable part capable to rotate along an axis which has a peripheral profiled annular ferrule which is intended to be subjected to the blade heads of a propeller and which is mounted coaxially in this skirt so as to be able to rotate there. This fairing is characterized in that, taking as references the direction of flow and the axis, this ferrule is delimited by an internal wall, an external wall and a rear edge, this zone connection is delimited in particular by an internal surface with an upstream end, and in that this rear edge of the ferrule is situated in a plane which is perpendicular to the axis and which passes practically through the upstream end of the internal surface of the connection area.

L'invention a aussi pour objet l'application d'un tel carénage aux groupes motoventilateurs par exemple d'automobile.The invention also relates to the application of such a fairing to fan units, for example from cars.

D'autres caractéristiques et avantages de l'invention ressortiront de la lecture de la description et des revendications qui suivent, ainsi que de l'examen du dessin annexé, donné seulement à titre d'exemple, où:

  • la Figure 1 est une vue perspective partielle éclatée d'un mode de réalisation d'un carénage selon l'invention dans son application à un groupe motoventilateur pour radiateur d'automobile;
  • la Figure 2 est une coupe méridienne schématique d'un carénage selon l'invention;
  • la Figure 3 est une section locale méridienne de détail de la Figure 2, non à l'échelle pour faciliter l'illustration; et
  • la Figure 4 est une vue analogue à celle de la Figure 3 d'une variante d'exécution de l'invention.
Other characteristics and advantages of the invention will emerge from reading the description and the claims which follow, as well as from examining the appended drawing, given only by way of example, where:
  • Figure 1 is a partial exploded perspective view of an embodiment of a fairing according to the invention in its application to a fan assembly for an automobile radiator;
  • Figure 2 is a schematic meridian section of a fairing according to the invention;
  • Figure 3 is a local meridian detail of Figure 2, not to scale for ease of illustration; and
  • Figure 4 is a view similar to that of Figure 3 of an alternative embodiment of the invention.

Les ventilateurs et en particulier leur carénage, notamment ceux utilisés dans l'industrie automobile, étant bien connus dans la technique, on ne décrira dans ce qui suit que ce qui concerne directement ou indirectement l'invention. Pour le surplus, le spécialiste de la technique considérée puisera dans les solutions classiques courantes à sa disposition pour faire face aux problèmes particuliers auxquels il est confronté.Since the fans and in particular their fairing, in particular those used in the automobile industry, are well known in the art, only what relates directly or indirectly to the invention will be described in the following. For the rest, the specialist in the technique considered will draw on the current conventional solutions at his disposal to deal with the particular problems with which he is confronted.

Dans ce qui suit, un même numéro de référence identifie toujours un même élément homologue quel que soit le mode de réalisation ou sa variante d'exécution.In what follows, the same reference number always identifies the same homologous element whatever either the embodiment or its variant of execution.

Pour la commodité de l'exposé, on décrira successivement chacun des constituants d'un carénage perfectionné pour ventilateur suivant l'invention avant d'en décrire le fonctionnement et sa construction.For the convenience of the description, each of the constituents of an improved fairing for a fan according to the invention will be described successively before describing its operation and construction.

Comme on le voit, un carénage pour ventilateur comprend une partie fixe 10, habituellement appelée diffuseur, et une partie mobile 20 habituellement une hélice à virole, apte à tourner selon un axe 200. Les flux d'air sont schématisés par une flèche.As can be seen, a fan shroud comprises a fixed part 10, usually called a diffuser, and a mobile part 20 usually a ferrule propeller, capable of turning along an axis 200. The air flows are shown diagrammatically by an arrow.

La partie fixe 10 ou diffuseur, comprend une embase 11 destinée à sa fixation sur un échangeur E, un radiateur ou similaire comme illustré. Ce diffuseur comprend aussi une buse-entonnoir 12 et une zone de raccordement 13 pour réunir cette buse-entonnoir à une jupe 14. La jupe 14 est, de préférence, cylindrique et coaxiale à l'axe 200 alors que l'embase 11 est généralement prévue pour être fixée sur un échangeur E ou radiateur rectangulaire si bien que la buse entonnoir 12 a une configuration approximativement cylindro-pyramidale, la partie cylindrique étant située à l'amont et la partie pyramidale à l'aval repéré par rapport au sens d'écoulement. Ce diffuseur comprend aussi des bras 15 radiaux, par exemple trois, destinés à supporter un moteur électrique M d'entraînement d'un arbre sur lequel est monté le moyeu de l'hélice ou partie mobile 20.The fixed part 10 or diffuser, comprises a base 11 intended for its attachment to an exchanger E, a radiator or the like as illustrated. This diffuser also includes a funnel nozzle 12 and a connection zone 13 for joining this funnel nozzle to a skirt 14. The skirt 14 is preferably cylindrical and coaxial with the axis 200 while the base 11 is generally intended to be fixed to an exchanger E or rectangular radiator so that the funnel nozzle 12 has an approximately cylindro-pyramidal configuration, the cylindrical part being located upstream and the pyramidal part downstream identified with respect to the direction of flow. This diffuser also includes radial arms 15, for example three, intended to support an electric motor M for driving a shaft on which the hub of the propeller or mobile part 20 is mounted.

La partie mobile ou hélice 20 comprend une virole 21 annulaire profilée, des pales 22 et un moyeu 23. Comme on le voit, cette virole est délimitée par une paroi intérieure 2101, une paroi extérieure 2102 et une tranche postérieure 2103. Cette virole 21 comprend un rebord 211, une collerette 212 et un prolongement 213. Chaque pale 22 comprend une tête 221 vers l'extérieur et un pied 222 vers l'axe, un bord d'attaque 223 et un bord de fuite 224. Les têtes 221 des pales sont destinées à être assujetties à la virole 21 alors que leurs pieds 222 sont destinés à être assujettis au moyeu 23.The movable part or propeller 20 comprises a profiled annular ferrule 21, blades 22 and a hub 23. As can be seen, this ferrule is delimited by an interior wall 2101, an exterior wall 2102 and a rear edge 2103. This ferrule 21 comprises a flange 211, a flange 212 and an extension 213. Each blade 22 comprises a head 221 towards the outside and a foot 222 towards the axis, a leading edge 223 and a trailing edge 224. The heads 221 of the blades are intended for be subject to the ferrule 21 while their feet 222 are intended to be subject to the hub 23.

Comme on le voit, la zone 13 de raccordement du diffuseur 10 est délimitée notamment par une surface interne 131 d'extrémité 1310 amont.As can be seen, the zone 13 for connecting the diffuser 10 is delimited in particular by an internal surface 131 at the end 1310 upstream.

Les distances qui séparent l'axe 200 de la paroi intérieure 2101 et de la paroi extérieure 2102 de la virole 21, mesurées à la tranche postérieure 2103, sont désignées respectivement par R₁ et R₂.The distances between the axis 200 of the inner wall 2101 and the outer wall 2102 of the shell 21, measured at the rear edge 2103, are designated respectively by R₁ and R₂.

Comme on le voit sur les figures du dessin, selon l'invention la virole 21 est montée dans la jupe 14 de manière que sa tranche postérieure 2103 soit pratiquement située dans un plan P ou au voisinage immédiat, qui est perpendiculaire à l'axe 200 et qui passe pratiquement par l'extrémité amont 1310 de la surface interne 131 de la zone de raccordement.As can be seen in the drawing figures, according to the invention the ferrule 21 is mounted in the skirt 14 so that its rear edge 2103 is practically situated in a plane P or in the immediate vicinity, which is perpendicular to the axis 200 and which passes practically through the upstream end 1310 of the internal surface 131 of the connection zone.

Grâce à la mise en place judicieuse que l'on vient d'indiquer, le flux d'air qui quitte l'hélice s'évase dès son entrée dans le diffuseur en "collant" à la paroi intérieure de celui-ci. Ceci a pour effet de minimiser, voire de supprimer la création d'une zone de turbulence qui se manifeste à l'état d'un tourbillon torique qui contribuerait à la formation d'un courant de reflux entre jupe et virole qui circulerait à contre-courant.Thanks to the judicious positioning which has just been indicated, the air flow which leaves the propeller widens as soon as it enters the diffuser, by "sticking" to the inner wall of the latter. This has the effect of minimizing or even eliminating the creation of a zone of turbulence which manifests itself in the state of a toric vortex which would contribute to the formation of a reflux current between the skirt and the ferrule which would circulate against current.

Afin d'améliorer cet effet, selon une variante d'exécution de l'invention, on dispose sur la surface interne 131 de la zone de raccordement 13 du diffuseur 10, un bourrelet ou redan 132 qui est saillant intérieurement et qui est placé à proximité de l'extrémité amont 1310 de cette zone de raccordement. On fait en sorte que ce bourrelet 132 présente une face 1321 profilée de jonction avec, de préférence une face plane 1322 configurée en couronne radiale. Cette face 1321 est telle qu'elle est située, dans sa zone qui en est la plus proche, à une distance R de l'axe 200, pratiquement égale à ou peu différente de la distance R₁ séparant cet axe de la paroi intérieure 2101 de la virole 21, mesurée à la tranche postérieure 2103. Selon l'invention, cette face plane en couronne radiale 1322 est située dans le plan P ou à proximité immédiate, qui est perpendiculaire à l'axe 200 et qui passe par l'extrémité amont 1310 de la surface interne 131 de la zone de raccordement 13.In order to improve this effect, according to an alternative embodiment of the invention, there is available on the internal surface 131 of the connection zone 13 of the diffuser 10, a bead or step 132 which is projecting internally and which is placed close from the upstream end 1310 of this connection zone. It is made so that this bead 132 has a profiled face 1321 of junction with, preferably a flat face 1322 configured in radial crown. This face 1321 is as it is located, in its zone which is the most close, at a distance R from the axis 200, practically equal to or little different from the distance R₁ separating this axis from the inner wall 2101 of the ferrule 21, measured at the rear edge 2103. According to the invention, this flat face in radial crown 1322 is located in the plane P or in the immediate vicinity, which is perpendicular to the axis 200 and which passes through the upstream end 1310 of the internal surface 131 of the connection zone 13.

De préférence, la distance R satisfait à la relation R = 1/3 (2R₁ + R₂).Preferably, the distance R satisfies the relation R = 1/3 (2R₁ + R₂).

Les mesures adoptées pour le bourrelet ou redan 132 assurent une continuité physique ou aérodynamique de la paroi intérieure 2101 de la virole 21 avec la surface interne 131 de la zone de raccordement 13, pratiquement sans solution de continuité.The measures adopted for the bead or step 132 ensure physical or aerodynamic continuity of the inner wall 2101 of the shell 21 with the inner surface 131 of the connection zone 13, practically without any solution of continuity.

Pour que la région de transition soit la plus réduite possible, on fait en sorte que l'écart axial a entre la face plane en couronne radiale 1322 du bourrelet 132 et la tranche postérieure 2103 de la virole 21, est pratiquement égal à l'écart radial r qui sépare la surface interne 141 de la jupe 14, de la paroi extérieure 2102 de la virole 21 qui lui fait face.So that the transition region is as small as possible, we make sure that the axial gap a between the planar face in radial crown 1322 of the bead 132 and the rear edge 2103 of the shell 21, is practically equal to the gap radial r which separates the internal surface 141 of the skirt 14 from the external wall 2102 of the shell 21 which faces it.

De la sorte, l'écoulement turbulent centrifuge au niveau des têtes de pale peut s'évaser dans le diffuseur en "collant" à ses parois, par exemple par effet Coanda.In this way, the centrifugal turbulent flow at the level of the blade heads can flare in the diffuser by "sticking" to its walls, for example by Coanda effect.

L'existence de ce bourrelet ou redan crée en quelque sorte une "chicane" ou similaire, mécanique qui permet de minimiser, voire réduire à sa plus simple expression, le reflux de circulation entre la partie aval de refoulement de l'hélice et la partie amont d'aspiration.The existence of this bead or step creates in a way a "chicane" or similar, mechanical which makes it possible to minimize, or even reduce to its simplest expression, the flow backflow between the downstream part of the propeller discharge and the part upstream suction.

La partie fixe est par exemple faite, pour tout ou partie, en tôle ou en résine(s) synthétique(s). Il en est de même pour la partie mobile.The fixed part is for example made, for all or part, of sheet metal or synthetic resin (s). It is the same for the mobile part.

Grâce à l'invention, les performances de refroidissement sont accrues et le rendement du ventilateur augmenté.Thanks to the invention, the cooling performance is increased and the efficiency of the fan increased.

L'invention trouve en particulier une application pour les radiateurs de moteurs thermiques d'automobiles, qu'ils soient à groupes motoventilateurs simples ou doubles et tout spécialement lorsque de tels groupes motoventilateurs sont placés en amont du radiateur ou échangeur.The invention finds in particular an application for radiators of automobile heat engines, whether they are with single or double fan units and especially when such fan units are placed upstream of the radiator or exchanger.

On comprend tous les avantages apportés par le carénage selon l'invention.We understand all the advantages provided by the fairing according to the invention.

Claims (6)

1 - Carénage perfectionné pour ventilateur comprenant, entre autres, une partie fixe faite d'un diffuseur (10) qui présente une embase (11) de fixation, une buse-entonnoir (12), une zone de raccordement (13), une jupe (14) cylindrique, et une partie mobile (20) apte à tourner selon un axe (200) qui présente une virole (21) annulaire profilée périphérique qui est destinée à être assujettie à des têtes (221) de pales (22) d'une hélice et qui est montée coaxialement dans cette jupe (14) de manière à pouvoir y tourner, caractérisé en ce que, en prenant pour références le sens de l'écoulement et l'axe (200), cette virole (21) est délimitée par une paroi (2101) intérieure, une paroi (2102) extérieure et une tranche (2103) postérieure, cette zone de raccordement (13) est délimitée notamment par une surface (131) interne avec une extrémité (1310) amont, et en ce que cette tranche postérieure (2103) de la virole (21) est située dans un plan (P) qui est perpendiculaire à l'axe (200) et qui passe pratiquement par l'extrémité amont (1310) de la surface interne (131) de la zone de raccordement (13). 1 - Improved fairing for a fan comprising, inter alia, a fixed part made of a diffuser (10) which has a mounting base (11), a funnel nozzle (12), a connection zone (13), a skirt (14) cylindrical, and a movable part (20) able to rotate along an axis (200) which has a peripheral profiled annular ferrule (21) which is intended to be subjected to heads (221) of blades (22) of a propeller and which is mounted coaxially in this skirt (14) so as to be able to rotate there, characterized in that, taking as references the direction of flow and the axis (200), this ferrule (21) is delimited by an internal wall (2101), an external wall (2102) and a rear edge (2103), this connection zone (13) is delimited in particular by an internal surface (131) with an upstream end (1310), and in this that this posterior section (2103) of the ferrule (21) is situated in a plane (P) which is perpendicular ular to the axis (200) and which passes practically through the upstream end (1310) of the internal surface (131) of the connection zone (13). 2 - Carénage selon la revendication 1, caractérisé en ce que la surface interne (131) de la zone de raccordement (13) porte un bourrelet (132) qui est saillant intérieurement et qui est placé à proximité de son extrémité amont (1310), et en ce que la face (1321) de ce bourrelet (132) dans sa zone la plus proche de l'axe (200) est située à une distance (R) de ce dernier (200) pratiquement égale à la distance (R₁) séparant cet axe (200) de la paroi intérieure (2101) de la virole (21), mesurée à la tranche postérieure (2103). 2 - Fairing according to claim 1, characterized in that the internal surface (131) of the connection zone (13) carries a bead (132) which projects inwardly and which is placed near its upstream end (1310), and in that the face (1321) of this bead (132) in its zone closest to the axis (200) is located at a distance (R) from the latter (200) practically equal to the distance (R₁) separating this axis (200) from the inner wall (2101) of the ferrule (21), measured at the rear edge (2103). 3 - Carénage selon la revendication 2, caractérisé en ce que le bourrelet (132) est délimité vers l'amont par une face (1322) plane en couronne radiale, et en ce que cette face (1322) est située pratiquement dans le plan (P) perpendiculaire à l'axe (200) qui passe par l'extrémité amont (1310) de la surface interne (131) de la zone de raccordement (13). 3 - Fairing according to claim 2, characterized in that the bead (132) is delimited upstream by a face (1322) planar in crown radial, and in that this face (1322) is situated practically in the plane (P) perpendicular to the axis (200) which passes through the upstream end (1310) of the internal surface (131) of the connection zone (13). 4 - Carénage selon la revendication 2 ou 3, caractérisé en ce que la distance (R) séparant la zone de la face (1321) du bourrelet (132) la plus proche de l'axe proche (200) de ce dernier (200) satisfait pratiquement à la relation R = 1/3 (2R₁ + R₂) où R₁ et R₂ sont respectivement les distances séparant l'axe (200) de la paroi intérieure (2101) et la paroi extérieure (2102) de la virole (21), respectivement, mesurées à la tranche postérieure (2103). 4 - Fairing according to claim 2 or 3, characterized in that the distance (R) separating the area of the face (1321) of the bead (132) closest to the near axis (200) of the latter (200) practically satisfies the relation R = 1/3 (2R₁ + R₂) where R₁ and R₂ are respectively the distances between the axis (200) of the interior wall (2101) and the exterior wall (2102) of the ferrule (21) , respectively, measured at the posterior edge (2103). 5 - Carénage selon l'une quelconque des revendications 3 et 4, caractérisé en ce que l'écart radial (r) entre la surface interne (141) de la jupe (14) et la paroi extérieure (2102) de la virole (21) qui lui fait face, est pratiquement égal à l'écart axial (a) entre la face plane en couronne radiale (1322) du bourrelet (132) et la tranche postérieure (2103) de la virole. 5 - Fairing according to any one of claims 3 and 4, characterized in that the radial distance ( r ) between the internal surface (141) of the skirt (14) and the outer wall (2102) of the ferrule (21 ) which faces it, is practically equal to the axial difference ( a ) between the flat face in radial crown (1322) of the bead (132) and the rear edge (2103) of the ferrule. 6 - Application d'un carénage selon l'une quelconque des revendications 1 à 5 à un groupe motoventilateur pour automobile. 6 - Application of a fairing according to any one of claims 1 to 5 to a motor fan assembly for an automobile.
EP92402962A 1991-11-07 1992-11-02 Shrouding for a fan and its application in an automobile engine fan Expired - Lifetime EP0543694B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9113755 1991-11-07
FR919113755A FR2683599B1 (en) 1991-11-07 1991-11-07 IMPROVED FAIRING FOR FAN AND ITS APPLICATION TO A MOTOR FAN GROUP OF AUTOMOBILE.

Publications (2)

Publication Number Publication Date
EP0543694A1 true EP0543694A1 (en) 1993-05-26
EP0543694B1 EP0543694B1 (en) 1996-09-04

Family

ID=9418726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402962A Expired - Lifetime EP0543694B1 (en) 1991-11-07 1992-11-02 Shrouding for a fan and its application in an automobile engine fan

Country Status (5)

Country Link
US (1) US5342173A (en)
EP (1) EP0543694B1 (en)
DE (1) DE69213399T2 (en)
ES (1) ES2092657T3 (en)
FR (1) FR2683599B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645543A1 (en) * 1993-08-31 1995-03-29 Caterpillar Inc. Low noise cooling system
FR2728028A1 (en) * 1994-12-07 1996-06-14 Sardou Max Device for transferring energy from motor to pressurise gas, used e.g. for vehicle ventilation
EP0703367A3 (en) * 1994-09-21 1997-01-08 Lombardini Fab It Motori Spa Air conveying system for internal combustion engine radiators
WO2010081813A1 (en) * 2009-01-14 2010-07-22 Novenco A/S An axial blower
FR2998223A1 (en) * 2012-11-21 2014-05-23 Peugeot Citroen Automobiles Sa Fan-motor unit for car, has propeller including central body carrying blade, and ferrule including upper end point and edge point on same circle of radius and center, where center is constituted by one end of blade

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5454695A (en) * 1994-07-05 1995-10-03 Ford Motor Company High output engine cooling fan
DE19645507B4 (en) * 1995-11-18 2006-03-02 Volkswagen Ag Mounting arrangement for an air duct on a charge air cooler
US5740766A (en) * 1997-03-25 1998-04-21 Behr America, Inc. Automotive fan and shroud assembly
US5791876A (en) * 1997-03-25 1998-08-11 Behr America, Inc. Floating drive assembly for an automotive cooling fan
JP3601807B2 (en) * 1997-10-08 2004-12-15 本田技研工業株式会社 Radiator cooling system for motorcycles
US5901786A (en) * 1998-09-21 1999-05-11 Ford Motor Company Axial fan sandwich cooling module incorporating airflow by-pass features
US6203287B1 (en) 1999-08-31 2001-03-20 Ingersoll-Rand Company Fluid compressor with airflow manifold that includes means for discharging particulated matter from the compressor and method
US6309178B1 (en) * 1999-09-22 2001-10-30 Young S. Kim Downstream guiding device for fan-radiator cooling system
DE10233626B4 (en) * 2001-07-25 2019-03-21 Denso Corporation Front end construction for a vehicle
US6676371B1 (en) * 2002-08-22 2004-01-13 Custom Molders, Inc. Double barrel vehicle cooling fan shroud
JP4627409B2 (en) * 2004-04-20 2011-02-09 日本電産サーボ株式会社 Axial fan
DE102010051760A1 (en) * 2010-11-17 2012-05-24 Evg Lufttechnik Gmbh Axial fan with upstream connection hood and a downstream diffuser
DE202010016820U1 (en) * 2010-12-21 2012-03-26 Ebm-Papst Mulfingen Gmbh & Co. Kg Diffuser for a fan and fan assembly with such a diffuser
DE102012003336A1 (en) 2012-02-17 2013-08-22 Ziehl-Abegg Ag Diffuser, fan with such a diffuser and device with such fans
TW201518607A (en) * 2013-11-14 2015-05-16 Hon Hai Prec Ind Co Ltd Fan
JP2015155681A (en) * 2014-02-21 2015-08-27 株式会社デンソー blower
JP7116459B2 (en) * 2017-10-05 2022-08-10 国立研究開発法人宇宙航空研究開発機構 Ducted fan, multicopter, vertical take-off and landing aircraft, CPU cooling fan and radiator cooling fan
DE102018132002A1 (en) * 2018-12-12 2020-06-18 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilation unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2256051A2 (en) * 1973-12-26 1975-07-25 Int Harvester Co
EP0026997A1 (en) * 1979-10-09 1981-04-15 General Motors Corporation Shroud arrangement for engine cooling fan
WO1985005408A1 (en) * 1984-05-23 1985-12-05 Airflow Research & Manufacturing Corp. Fan and housing
EP0183581A1 (en) * 1984-10-22 1986-06-04 ACIERS ET OUTILLAGE PEUGEOT Société dite: Blower device for the cooling-fluid circuit of a thermal engine
FR2603953A1 (en) * 1986-09-12 1988-03-18 Peugeot Aciers Et Outillage PROPELLER BLADE AND ITS APPLICATION TO MOTOR FANS
EP0445804A1 (en) * 1990-03-07 1991-09-11 Nippondenso Co., Ltd. Fan apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR26997E (en) * 1922-09-28 1924-03-20 Method of constructing sheet metal chimneys
US2030993A (en) * 1934-08-27 1936-02-18 Internat Engineering Inc Fan
US3995603A (en) * 1974-04-08 1976-12-07 Hans List Cooler-cum-blower assembly for internal combustion engines
US4061188A (en) * 1975-01-24 1977-12-06 International Harvester Company Fan shroud structure
FR2497883B1 (en) * 1981-01-09 1985-12-13 Etri Sa FLAT TYPE AXIAL ELECTRIC FAN
JPS59176499A (en) * 1983-03-25 1984-10-05 Hino Motors Ltd Cooling fan device for internal-combustion engine
AT383999B (en) * 1985-10-28 1987-09-10 Steyr Daimler Puch Ag COOLING DEVICE FOR DIVING OR FLOATING MOTOR VEHICLES WITH LIQUID-COOLED ENGINE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2256051A2 (en) * 1973-12-26 1975-07-25 Int Harvester Co
EP0026997A1 (en) * 1979-10-09 1981-04-15 General Motors Corporation Shroud arrangement for engine cooling fan
WO1985005408A1 (en) * 1984-05-23 1985-12-05 Airflow Research & Manufacturing Corp. Fan and housing
EP0183581A1 (en) * 1984-10-22 1986-06-04 ACIERS ET OUTILLAGE PEUGEOT Société dite: Blower device for the cooling-fluid circuit of a thermal engine
FR2603953A1 (en) * 1986-09-12 1988-03-18 Peugeot Aciers Et Outillage PROPELLER BLADE AND ITS APPLICATION TO MOTOR FANS
EP0445804A1 (en) * 1990-03-07 1991-09-11 Nippondenso Co., Ltd. Fan apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645543A1 (en) * 1993-08-31 1995-03-29 Caterpillar Inc. Low noise cooling system
EP0703367A3 (en) * 1994-09-21 1997-01-08 Lombardini Fab It Motori Spa Air conveying system for internal combustion engine radiators
FR2728028A1 (en) * 1994-12-07 1996-06-14 Sardou Max Device for transferring energy from motor to pressurise gas, used e.g. for vehicle ventilation
WO2010081813A1 (en) * 2009-01-14 2010-07-22 Novenco A/S An axial blower
FR2998223A1 (en) * 2012-11-21 2014-05-23 Peugeot Citroen Automobiles Sa Fan-motor unit for car, has propeller including central body carrying blade, and ferrule including upper end point and edge point on same circle of radius and center, where center is constituted by one end of blade
RU2589816C2 (en) * 2012-11-21 2016-07-10 Пежо Ситроен Отомобиль Са Ventilation device for vehicle and vehicle

Also Published As

Publication number Publication date
DE69213399T2 (en) 1997-02-06
ES2092657T3 (en) 1996-12-01
FR2683599B1 (en) 1994-03-04
EP0543694B1 (en) 1996-09-04
FR2683599A1 (en) 1993-05-14
DE69213399D1 (en) 1996-10-10
US5342173A (en) 1994-08-30

Similar Documents

Publication Publication Date Title
EP0543694B1 (en) Shrouding for a fan and its application in an automobile engine fan
KR100978594B1 (en) Automotive fan assembly with flared shroud and fan with conforming blade tips
AU605042B2 (en) Shrouding for engine cooling fan
EP0886366B1 (en) Alternator with improved cooling means, in particular for an automotive vehicle
JP4859674B2 (en) Centrifugal blower
EP0260175B1 (en) Profiled propeller blade and its use in motor-driven fans
EP1008761A2 (en) Fan stator
FR2786437A1 (en) MOTOR VEHICLE HEATING AND / OR AIR CONDITIONING DEVICE WITH COMPACT MOTOR-FAN GROUP
GB1596749A (en) Mixed flow fan
EP0541429B1 (en) Profiled shroud for a fan rotor and its use in motor driven fans for cars
KR0120394B1 (en) Improved axial flow impeller
EP0242248B1 (en) Radial ventilator, especially for motor vehicle air conditioning
FR2898943A1 (en) FAN PROPELLER, ESPECIALLY FOR AUTOMOTIVE VEHICLES
JPH07247991A (en) Diagonal flow fan
JPH07259798A (en) Centrifugal blower
FR2804181A1 (en) Ventilator for air channel of vehicle heat exchanger; has central hub with fan blades held in ring in wall of air channel and having outer blades on outer surface to generate centrifugal flow
EP0771060B1 (en) Alternator featuring improved internal ventilation means
FR2833050A1 (en) HELICOID FAN WITH NOISE REDUCING MEANS
JPH09144550A (en) Turbine for supercharger
EP1106837B1 (en) Fan casing
FR2859251A1 (en) Pulser for heating, ventilation and/or air conditioning apparatus, has intermediate piece mounted on engine support and placed in upstream of vaned rotor, where piece and support have radial ribs to spin air in rotor direction
FR2731306A1 (en) MONOBLOC COOLING AIR DIFFUSER FOR ELECTROMECHANICAL DEVICE
US4655686A (en) Air conveying device on a radiator for water-cooled internal combustion engines
FR2772437A1 (en) Air fan for air conditioning system of vehicle,
GB2064668A (en) Fan Blade

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 SE

17P Request for examination filed

Effective date: 19930925

17Q First examination report despatched

Effective date: 19950202

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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 SE

ITF It: translation for a ep patent filed

Owner name: BUGNION S.P.A.

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

Effective date: 19960917

REF Corresponds to:

Ref document number: 69213399

Country of ref document: DE

Date of ref document: 19961010

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

Ref country code: SE

Payment date: 19961127

Year of fee payment: 5

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2092657

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

Ref country code: SE

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

Effective date: 19971103

EUG Se: european patent has lapsed

Ref document number: 92402962.2

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

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

Ref country code: GB

Payment date: 20061026

Year of fee payment: 15

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

Ref country code: ES

Payment date: 20061114

Year of fee payment: 15

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

Ref country code: IT

Payment date: 20061130

Year of fee payment: 15

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

Effective date: 20071102

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: 20071102

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20071103

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: 20071103

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

Effective date: 20071102

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

Ref country code: DE

Payment date: 20091126

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69213399

Country of ref document: DE

Effective date: 20110601

Ref country code: DE

Ref legal event code: R119

Ref document number: 69213399

Country of ref document: DE

Effective date: 20110531

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: 20110531