EP0183581B1 - Blower device for the cooling-fluid circuit of a thermal engine - Google Patents

Blower device for the cooling-fluid circuit of a thermal engine Download PDF

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Publication number
EP0183581B1
EP0183581B1 EP85401993A EP85401993A EP0183581B1 EP 0183581 B1 EP0183581 B1 EP 0183581B1 EP 85401993 A EP85401993 A EP 85401993A EP 85401993 A EP85401993 A EP 85401993A EP 0183581 B1 EP0183581 B1 EP 0183581B1
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EP
European Patent Office
Prior art keywords
ferrule
ferrules
ventilation device
sleeve
inlet
Prior art date
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Expired
Application number
EP85401993A
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German (de)
French (fr)
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EP0183581A1 (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.)
Cambio Ragione Sociale ecia-Equipements Et Composa
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Aciers et Outillage Peugeot SA
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    • 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
    • F04D29/547—Ducts having a special shape in order to influence fluid flow
    • 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

Definitions

  • the invention relates to ventilation devices with ferrules and more particularly devices of this type used in the cooling circuits of a heat transfer fluid of a heat engine.
  • the object of the invention is to propose a ventilation device with ferrules which is of simple design and production and which avoids too great precision which is difficult to obtain and which makes the parts extremely expensive to produce.
  • the subject of the invention is a ventilation device with ferrules, in particular for the cooling circuit of the heat transfer fluid of a heat engine, comprising an inlet ferrule and an output ferrule, one of which is movable in rotation by relative to each other and connects the ends of the blades of a propeller, characterized in that said ferrules are coaxial and juxtaposed, the thickness of the material constituting said outlet ferrule is at least equal to the thickness of the material constituting said ferrule inlet and in that the inside diameter of the outlet ring is at least equal to the inside diameter of the inlet ring and at most equal to the diameter of the inlet ring increased by the thickness of the latter.
  • Ventilation devices such as that shown in FIG. 1. These devices comprise a propeller 1 composed of a certain number of blades 2. These blades 2 are generally regularly distributed over the periphery of a bowl 3.
  • a piece of revolution 4 which has at one of its ends a rim 4 'projecting outwards according to a curvature determined in a conventional manner is connected to the ends of the blades 2 opposite to the bowl 3. This piece of revolution will be referred to as below "rotating ferrule" 4.
  • the propeller thus formed in one piece by molding is made integral with the shaft 5 of an electric motor 6 by conventional means (not shown).
  • the motor 6 has tabs 7 regularly arranged at its periphery for fixing at points 8 on a number of arms 9, integral with a chassis 10.
  • This chassis 10 has a wall 11 which ensures its mechanical rigidity and delimits, in a zone R, a ventilation chamber.
  • the chassis 10 also has fixing lugs 13 intended to fix the assembly to the vehicle body (not shown).
  • a distance d 2 separates the angle formed by the fixed ferrule 12 and the wall 11 and the flange 4 'projecting towards the outside of the rotating ferrule 4.
  • This fig. 1 represents the case where the fan is placed upstream of the radiator, that is to say in the zone R.
  • the air whose direction of circulation is represented by an arrow F, in FIG. 1 is therefore sucked in by propeller 1 and discharged into zone R.
  • the air sucked in enters the ventilation device through one end of the rotating ferrule having a rim projecting outwards with a curvature a, commonly called “trumpet" entry.
  • the distances d, and d 2 as well as the curvature a are very important for the proper functioning of the ventilation device. Indeed, any variation, even small, of one of these factors harms the silence and performance of the device.
  • the ventilation device according to the invention is composed of a propeller 14 comprising a number of blades 15, in general regularly distributed over the periphery of a bowl 16.
  • a part of revolution connects the ends of the blades 5 opposite to the bowl 16.
  • This rotating ferrule 17 has at one of its ends a flange 17 'projecting outwards at a curvature b determined so classic.
  • the rotating ferrule 17 has, in its cylindrical part, an internal diameter D17 and it is made of a material of thickness E17.
  • the propeller thus formed in one piece by molding is mounted on the shaft of an electric motor 18 by conventional means (not shown).
  • This motor 18 is made integral with a fixed ferrule 19 which is in the form of a hollow cylinder, by support arms 20.
  • the internal diameter of the fixed shell 19 is D19 and the thickness of the material constituting it, E19.
  • This fixed ferrule 19 has fixing lugs 21 regularly distributed over its outer periphery so as to allow the assembly of the assembly on the body of a vehicle (not shown) or on an intermediate member.
  • the rotating ferrules 17 and the fixed ferrules 19 are coaxial and juxtaposed, so that the respective edges of the ferrules facing each other are spaced apart by a distance J and that they are substantially aligned.
  • the direction of circulation of the aspirated air is such that the air first passes through the shell 17 and then through the shell 19.
  • the thickness E19 of the material constituting the ferrule 19 is at least equal to the thickness E17 of the material constituting the ferrule 17 and that the internal diameter D19 of said ferrule 19 is at least equal to the internal diameter D17 of said ferrule 17 and at most equal to said diameter D17 increased by the thickness E17 of the material constituting the ferrule 17.
  • Figs. 3a and 3b represent the borderline cases of these relations.
  • the diameter D19 is equal to the diameter D17
  • the diameter D19 is equal to the diameter D17 increased by the thickness E17.
  • the direction of air circulation is such that it first passes through the fixed shroud 22 and then into the rotating shroud 23.
  • This ferrule 23 is part of a propeller 24 comprising blades 25.
  • the propeller 24 is fixed to the shaft of a motor, not shown, as described above.
  • the rotating ferrule 23 is in the form of a cylinder connecting the ends of said blades.
  • the fixed ferrule 22, the engine support arms of which are not shown, comprises fixing lugs 26 intended for mounting the assembly on a vehicle or an intermediate member (not shown).
  • the ferrule 22 has a flange 22 'projecting outwardly according to a curvature c determined in a conventional manner.
  • the rotating and fixed ferrules 23 are coaxial and juxtaposed so that the respective edges of the ferrules facing each other are spaced from each other by a distance J and they are substantially aligned.
  • D17, D22, E17 and E22 are the characteristics of the ferrules 17 and 22 that the air passes through first when it is sucked in by the device.
  • the ferrules 17 (fig. 2) and 22 (fig. 4) will be referred to hereinafter as input ferrules.
  • the inlet ferrules 17 and 22 have outwardly projecting flanges 17 'and 22' respectively.
  • D19, D23, E19 and E23 are the characteristics of the ferrules 19 and 23 that the air passes through following said inlet ferrules. These ferrules 19 and 23 will be referred to below as output ferrules.
  • the thickness ES of the outlet ring is at least equal to the thickness EE of the inlet ring and the inside diameter DS of the outlet ring is at least equal to the inside diameter DE E of the inlet ferrule and at most equal to the internal diameter DE of the inlet ferrule increased by the thickness EE of the inlet ferrule.
  • the ventilation device according to the invention makes it possible to obtain lower production costs by minimizing the effect of the inaccuracies due to the stacking of the parts.
  • This device finds its application in devices for cooling the heat transfer fluid of a heat engine.

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

Description

L'invention concerne les dispositifs de ventilation à viroles et plus particulièrement les dispositifs de ce type utilisés dans les circuits de refroidissement d'un fluide caloporteur d'un moteur thermique.The invention relates to ventilation devices with ferrules and more particularly devices of this type used in the cooling circuits of a heat transfer fluid of a heat engine.

On connaît différents dispositifs de ventilation à viroles, mais la structure de ces dispositifs impose des contraintes très importantes au niveau de la précision d'exécution des pièces et du positionnement relatif de celles-ci. En effet, on sait que la position relative de certaines pièces d'un dispositif de ventilation est très importante et contribue d'une part aux performances et d'autre part au silence de ce dispositif. Cependant, les précisions imposées par la structure des dispositifs connus entraînent des coûts de fabrication très élevés.Various ventilation devices are known with ferrules, but the structure of these devices imposes very significant constraints in terms of the precision of execution of the parts and the relative positioning of the latter. Indeed, we know that the relative position of certain parts of a ventilation device is very important and contributes on the one hand to performance and on the other hand to the silence of this device. However, the details imposed by the structure of the known devices entail very high manufacturing costs.

Le but de l'invention est de proposer un dispositif de ventilation à viroles qui soit de conception et de réalisation simples et qui évite les trop grandes précisions difficiles à obtenir qui rendent les pièces extrêmement coûteuses à réaliser.The object of the invention is to propose a ventilation device with ferrules which is of simple design and production and which avoids too great precision which is difficult to obtain and which makes the parts extremely expensive to produce.

A cet effet, l'invention a pour objet un dispositif de ventilation à viroles, notamment pour circuit de refroidissement du fluide caloporteur d'un moteur thermique, comprenant une virole d'entrée et une virole desortie dont l'une est mobile en rotation par rapport à l'autre et relie les extrémités des pales d'une hélice, caractérisé en ce que lesdites viroles sont coaxiales et juxtaposées, l'épaisseur du matériau constituant ladite virole de sortie est au moins égale à l'épaisseur du matériau constituant ladite virole d'entrée et en ce que le diamètre intérieur de la virole de sortie est au moins égal au diamètre intérieur de la virole d'entrée et au plus égal au diamètre de la virole d'entrée augmenté de l'épaisseur de cette dernière.To this end, the subject of the invention is a ventilation device with ferrules, in particular for the cooling circuit of the heat transfer fluid of a heat engine, comprising an inlet ferrule and an output ferrule, one of which is movable in rotation by relative to each other and connects the ends of the blades of a propeller, characterized in that said ferrules are coaxial and juxtaposed, the thickness of the material constituting said outlet ferrule is at least equal to the thickness of the material constituting said ferrule inlet and in that the inside diameter of the outlet ring is at least equal to the inside diameter of the inlet ring and at most equal to the diameter of the inlet ring increased by the thickness of the latter.

L'invention sera mieux comprise à l'aide de la description qui va suivre, donnée uniquement à titre d'exempfe et faite en se référant aux dessins annexés sur lesquels:

  • la fig. 1 représente une vue en coupe d'un dispositif de ventilation à viroles de type connu;
  • la fig. 2 est une vue en coupe partielle d'un dispositif de ventilation à virole selon l'invention;
  • les fig. 3a et 3b représentent les limites de la valeur du diamètre intérieur de la virole de sortie;
  • la fig. 4 représente une vue partielle d'un dispositif de ventilation selon un autre mode de réalisation de l'invention;
  • la fig. 5 est un graphique représentant la perte de débit du dispositif de ventilation selon l'invention en fonction de la distance séparant les viroles d'entrée et de sortie.
The invention will be better understood with the aid of the description which follows, given solely by way of example and made with reference to the appended drawings in which:
  • fig. 1 shows a sectional view of a ventilation device with ferrules of known type;
  • fig. 2 is a partial sectional view of a shell ventilation device according to the invention;
  • fig. 3a and 3b represent the limits of the value of the internal diameter of the outlet ring;
  • fig. 4 shows a partial view of a ventilation device according to another embodiment of the invention;
  • fig. 5 is a graph representing the loss of flow of the ventilation device according to the invention as a function of the distance separating the inlet and outlet ferrules.

On rencontre, dans l'état de la technique, des dispositifs de ventilation tels que celui représenté sur la fig. 1. Ces dispositifs comportent une hélice 1 composée d'un certain nombre de pales 2. Ces pales 2 sont généralement régulièrement réparties sur la périphérie d'un bol 3.In the state of the art, there are ventilation devices such as that shown in FIG. 1. These devices comprise a propeller 1 composed of a certain number of blades 2. These blades 2 are generally regularly distributed over the periphery of a bowl 3.

Une pièce de révolution 4 qui présente à l'une de ses extrémités un rebord 4' faisant saillie vers l'extérieur suivant une courbure a déterminée de manière classique est reliée aux extrémités des pales 2 opposées au bol 3. Cette pièce de révolution sera dénommée ci-dessous «virole tournante» 4.A piece of revolution 4 which has at one of its ends a rim 4 'projecting outwards according to a curvature determined in a conventional manner is connected to the ends of the blades 2 opposite to the bowl 3. This piece of revolution will be referred to as below "rotating ferrule" 4.

L'hélice ainsi constituée d'une seule pièce par moulage est rendue solidaire de l'arbre 5 d'un moteur électrique 6 par des moyens classiques (non représentés).The propeller thus formed in one piece by molding is made integral with the shaft 5 of an electric motor 6 by conventional means (not shown).

Le moteur 6 présente des pattes 7 disposées régulièrement à sa périphérie en vue de la fixation en des points 8 sur un certain nombre de bras 9, solidaires d'un châssis 10.The motor 6 has tabs 7 regularly arranged at its periphery for fixing at points 8 on a number of arms 9, integral with a chassis 10.

Ce châssis 10 présente une paroi 11 qui assure sa rigidité mécanique et délimite, dans une zone R, une chambre de ventilation. Le châssis 10 présente également des pattes de fixation 13 destinées à fixer l'ensemble sur la carrosserie du véhicule (non représentée).This chassis 10 has a wall 11 which ensures its mechanical rigidity and delimits, in a zone R, a ventilation chamber. The chassis 10 also has fixing lugs 13 intended to fix the assembly to the vehicle body (not shown).

Un cylindre 12 d'axe Λ- Λ' , solidaire du châssis 10 et formant généralement un angle avec la paroi 11, se trouve en regard de la virole tournante 4. Ce cylindre 12 sera dénommé ci-dessous «virole fixe» 12.A cylinder 12 with axis Λ- Λ ', integral with the chassis 10 and generally forming an angle with the wall 11, is located opposite the rotating ferrule 4. This cylinder 12 will be referred to below as "fixed ferrule" 12.

Les surfaces en regard des viroles fixe 12 et tournante 4 sont séparées par une distance d, . De même, une distance d2 sépare l'angle formé par la virole fixe 12 et la paroi 11 et le rebord 4' faisant saillie vers l'extérieur de la virole tournante 4.The facing surfaces of the fixed 12 and rotating 4 ferrules are separated by a distance d,. Likewise, a distance d 2 separates the angle formed by the fixed ferrule 12 and the wall 11 and the flange 4 'projecting towards the outside of the rotating ferrule 4.

Cette fig. 1 représente le cas où le ventilateur est placé en amont du radiateur, c'est-à-dire dans la zone R. L'air dont le sens de circulation est représenté par une flèche F, sur la fig. 1 est donc aspiré par l'hélice 1 et refoulé dans la zone R.This fig. 1 represents the case where the fan is placed upstream of the radiator, that is to say in the zone R. The air whose direction of circulation is represented by an arrow F, in FIG. 1 is therefore sucked in by propeller 1 and discharged into zone R.

Le cas où Le ventilateur est placé en aval du radiateur découle de cette fig. 1.The case where the fan is placed downstream of the radiator follows from this fig. 1.

On peut noter que l'air aspiré entre dans le dispositif de ventilation par une extrémité de la virole tournante présentant un rebord faisant saillie vers l'extérieur avec une courbure a, couramment appelée entrée en «trompette».It can be noted that the air sucked in enters the ventilation device through one end of the rotating ferrule having a rim projecting outwards with a curvature a, commonly called "trumpet" entry.

Les distances d, et d2 ainsi que la courbure a sont très importantes pour le bon fonctionnement du dispositif de ventilation. En effet, toute variation, même minime, d'un de ces facteurs nuit au silence et aux performances du dispositif.The distances d, and d 2 as well as the curvature a are very important for the proper functioning of the ventilation device. Indeed, any variation, even small, of one of these factors harms the silence and performance of the device.

C'est ce qui impose une grande précision lors de la fabrication et donc des coûts de réalisation très importants.This is what imposes great precision during manufacture and therefore very high production costs.

Le dispositif de ventilation selon l'invention, tel qu'il est représenté sur la fig. 2, est composé d'une hélice 14 comportant un certain nombre de pales 15, en général régulièrement réparties sur la périphérie d'un bol 16.The ventilation device according to the invention, as shown in FIG. 2, is composed of a propeller 14 comprising a number of blades 15, in general regularly distributed over the periphery of a bowl 16.

Une pièce de révolution, appelée virole tournante 17, relie les extrémités des pales 5 opposées au bol 16. Cette virole tournante 17 présente à l'une de ses extrémités un rebord 17' faisant saillie vers l'extérieur suivant une courbure b déterminée de manière classique.A part of revolution, called a rotating ferrule 17, connects the ends of the blades 5 opposite to the bowl 16. This rotating ferrule 17 has at one of its ends a flange 17 'projecting outwards at a curvature b determined so classic.

La virole tournante 17 présente, dans sa partie cylindrique, un diamètre intérieur D17 et elle est constituée d'un matériau d'épaisseur E17.The rotating ferrule 17 has, in its cylindrical part, an internal diameter D17 and it is made of a material of thickness E17.

L'hélice ainsi constituée d'une seule pièce par moulage est montée sur l'arbre d'un moteur électrique 18 par des moyens classiques (non représentés).The propeller thus formed in one piece by molding is mounted on the shaft of an electric motor 18 by conventional means (not shown).

Ce moteur 18 est rendu solidaire d'une virole fixe 19 qui se présente sous la forme d'un cylindre creux, par des bras de support 20.This motor 18 is made integral with a fixed ferrule 19 which is in the form of a hollow cylinder, by support arms 20.

Le diamètre intérieur de la virole fixe 19 est D19 et l'épaisseur du matériau la constituant, E19.The internal diameter of the fixed shell 19 is D19 and the thickness of the material constituting it, E19.

Cette virole fixe 19 comporte des pattes de fixation 21 régulièrement réparties sur sa périphérie extérieure de manière à permettre la fixation de l'ensemble sur la carrosserie d'un véhicule (non représentée) ou sur un organe intermédiaire.This fixed ferrule 19 has fixing lugs 21 regularly distributed over its outer periphery so as to allow the assembly of the assembly on the body of a vehicle (not shown) or on an intermediate member.

On constate que les viroles tournante 17 et fixe 19 sont coaxiales et juxtaposées, de sorte que les bords respectifs des viroles se faisant face sont écartés d'une distance J et qu'elles sont sensiblement alignées.It can be seen that the rotating ferrules 17 and the fixed ferrules 19 are coaxial and juxtaposed, so that the respective edges of the ferrules facing each other are spaced apart by a distance J and that they are substantially aligned.

Le sens de circulation de l'air aspiré, représenté par une flèche F2 sur la fig. 2, est tel que l'air passe d'abord dans la virole 17 et ensuite dans la virole 19.The direction of circulation of the aspirated air, represented by an arrow F 2 in FIG. 2, is such that the air first passes through the shell 17 and then through the shell 19.

Il a été constaté expérimentalement que les diamètres D17 et D19 et les épaisseurs E17 et E19 des viroles tournante 17 et fixe 19 respectivement doivent remplir certaines conditions pour obtenir un bon fonctionnement du dispositif de ventilation selon l'invention.It has been found experimentally that the diameters D17 and D19 and the thicknesses E17 and E19 of the rotating ferrules 17 and fixed 19 respectively must meet certain conditions in order to obtain correct operation of the ventilation device according to the invention.

C'est ainsi que l'épaisseur E19 du matériau constituant la virole 19 est au moins égale à l'épaisseur E17 du matériau constituant la virole 17 et que le diamètre intérieur D19 de ladite virole 19 est au moins égal au diamètre intérieur D17 de ladite virole 17 et au plus égal audit diamètre D17 augmenté de l'épaisseur E17 du matériau constituant la virole 17.Thus the thickness E19 of the material constituting the ferrule 19 is at least equal to the thickness E17 of the material constituting the ferrule 17 and that the internal diameter D19 of said ferrule 19 is at least equal to the internal diameter D17 of said ferrule 17 and at most equal to said diameter D17 increased by the thickness E17 of the material constituting the ferrule 17.

Ces dimensions sont matérialisées par les relations suivantes:

Figure imgb0001
Figure imgb0002
 These dimensions are materialized by the following relationships:
Figure imgb0001
Figure imgb0002

Les fig. 3a et 3b représentent les cas limites de ces relations. Par exemple, dans la fig. 3a, le diamètre D19 est égal au diamètre D17, tandis que dans la fig. 3b, le diamètre D19 est égal au diamètre D17 augmenté de l'épaisseur E17.Figs. 3a and 3b represent the borderline cases of these relations. For example, in fig. 3a, the diameter D19 is equal to the diameter D17, while in FIG. 3b, the diameter D19 is equal to the diameter D17 increased by the thickness E17.

Selon un second mode de réalisation de l'invention, représenté sur la fig. 4, le sens de circulation de l'air, représenté par une flèche F3, est tel que celui-ci passe d'abord dans la virole fixe 22 puis dans la virole tournante 23.According to a second embodiment of the invention, shown in FIG. 4, the direction of air circulation, represented by an arrow F 3 , is such that it first passes through the fixed shroud 22 and then into the rotating shroud 23.

Cette virole 23 fait partie d'une hélice 24 comportant des pales 25.This ferrule 23 is part of a propeller 24 comprising blades 25.

L'hélice 24 est fixée à l'arbre d'un moteur, non représenté, comme décrit précédemment.The propeller 24 is fixed to the shaft of a motor, not shown, as described above.

La virole tournante 23 se présente sous la forme d'un cylindre reliant les extrémités desdites pales.The rotating ferrule 23 is in the form of a cylinder connecting the ends of said blades.

La virole fixe 22, dont les bras de support du moteur ne sont pas représentés, comporte des pattes de fixation 26 destinées au montage de l'ensemble sur un véhicule ou un organe intermédiaire (non représentés).The fixed ferrule 22, the engine support arms of which are not shown, comprises fixing lugs 26 intended for mounting the assembly on a vehicle or an intermediate member (not shown).

La virole 22 présente un rebord 22' faisant saillie vers l'extérieur suivant une courbure c déterminée de manière classique.The ferrule 22 has a flange 22 'projecting outwardly according to a curvature c determined in a conventional manner.

Comme dans le premier mode de réalisation, les viroles tournante 23 et fixe 22 sont coaxiales et juxtaposées de manière que les bords respectifs des viroles se faisant face sont écartés l'un de l'autre d'une distance J et elles sont sensiblement alignées.As in the first embodiment, the rotating and fixed ferrules 23 are coaxial and juxtaposed so that the respective edges of the ferrules facing each other are spaced from each other by a distance J and they are substantially aligned.

Il a également été constaté expérimentalement que les diamètres D22 et D23 et les épaisseurs E22 et E23 des viroles fixe 22 et tournante 23 respectivement doivent remplir les conditions suivantes afin d'obtenir un bon fonctionnement du dispositif.

Figure imgb0003
Figure imgb0004
 It has also been found experimentally that the diameters D22 and D23 and the thicknesses E22 and E23 of the fixed ferrules 22 and rotating 23 respectively must meet the following conditions in order to obtain correct operation of the device.
Figure imgb0003
Figure imgb0004

Si l'on compare les deux modes de réalisation, on constate que D17, D22, E17 et E22 sont les caractéristiques des viroles 17 et 22 que l'air traverse en premier lieu lorsqu'il est aspiré par le dispositif. Les viroles 17 (fig. 2) et 22 (fig. 4) seront dénommées ci-après viroles d'entrée. Les viroles d'entrée 17 et 22 présentent des rebords faisant saillie vers l'extérieur 17' et 22' respectivement.If we compare the two embodiments, we see that D17, D22, E17 and E22 are the characteristics of the ferrules 17 and 22 that the air passes through first when it is sucked in by the device. The ferrules 17 (fig. 2) and 22 (fig. 4) will be referred to hereinafter as input ferrules. The inlet ferrules 17 and 22 have outwardly projecting flanges 17 'and 22' respectively.

D19, D23, E19 et E23 sont les caractéristiques des viroles 19 et 23 que l'air traverse à la suite desdites viroles d'entrée. Ces viroles 19 et 23 seront dénommées ci-après viroles de sortie.D19, D23, E19 and E23 are the characteristics of the ferrules 19 and 23 that the air passes through following said inlet ferrules. These ferrules 19 and 23 will be referred to below as output ferrules.

Si l'on définit DS et ES comme étant le diamètre et l'épaisseur respectivement caractérisant les viroles de sortie et DE et EE, les valeurs correspondantes caractérisant les viroles d'entrée, on obtient les relations suivantes:

Figure imgb0005
Figure imgb0006
 If DS and ES are defined as being the diameter and the thickness respectively characterizing the outlet ferrules and DE and EE, the corresponding values characterizing the inlet ferrules, the following relationships are obtained:
Figure imgb0005
Figure imgb0006

En d'autres termes, l'épaisseur ES de la virole de sortie est au moins égale à l'épaisseur EE de la virole d'entrée et le diamètre intérieur DS de la virole de sortie est au moins égal au diamètre intérieur DE E de la virole d'entrée et au plus égal au diamètre intérieur DE de la virole d'entrée augmenté de l'épaisseur EE de la virole d'entrée.In other words, the thickness ES of the outlet ring is at least equal to the thickness EE of the inlet ring and the inside diameter DS of the outlet ring is at least equal to the inside diameter DE E of the inlet ferrule and at most equal to the internal diameter DE of the inlet ferrule increased by the thickness EE of the inlet ferrule.

Il a été vérifié que dans la configuration du dispositif de ventilation selon l'invention, si les relations entre les diamètres intérieurs et les épaisseurs desdites viroles d'entrée et de sortie sont respectées, seule la distance J, qui dépend des empilements des différents composants, a une influence sur le débit du dispositif de ventilation. Ainsi, par exemple, la fig. 5, se rapportant à une hélice à neuf pales, fait ressortir une faible perte de débit pour une distance J variant entre 1 et 3 mm, ce qui est une précision facile à tenir.It has been verified that in the configuration of the ventilation device according to the invention, if the relationships between the inside diameters and the thicknesses of said inlet and outlet rings are respected, only the distance J, which depends on the stacks of the different components , has an influence on the flow rate of the ventilation device. So, for example, fig. 5, relating to a propeller with nine blades, highlights a small loss of flow for a distance J varying between 1 and 3 mm, which is an accuracy easy to hold.

Cette faible perte de débit est compensée par construction du dispositif en augmentant le débit de l'hélice.This small loss of flow is compensated for by construction of the device by increasing the flow of the propeller.

Ainsi, le dispositif de ventilation selon l'invention permet d'obtenir de plus faibles coûts de réalisation en minimisant l'effet des imprécisions dues à l'empilement des pièces.Thus, the ventilation device according to the invention makes it possible to obtain lower production costs by minimizing the effect of the inaccuracies due to the stacking of the parts.

Ce dispositif trouve son application dans les dispositifs de refroidissement du fluide caloporteur d'un moteur thermique.This device finds its application in devices for cooling the heat transfer fluid of a heat engine.

Claims (4)

1. A ventilation device having sleeves, in particular for the cooling circuit of a thermal transfer fluid of a heat engine, comprising an inlet sleeve (17; 22) and an outlet sleeve (19; 23), one (17; 23) thereof being rotatable relative to the other and connecting the ends of the blades (2; 25) of a propeller (1; 23), characterised in that said sleeves are coaxial and juxtaposed, the thickness (ES; E19; E23) of the material constituting said outlet sleeve (19;23) isatleatequaltothethickness (EE; E17; E22) of the material constituting said inlet sleeve (17; 22) and the inside diameter (DS; DE19; D23) of said outlet sleeve (19; 23) is at feast equal to the inside diameter (DE; DE1 7; D22) of the inlet sleeve (17; 22) and at the most equal to the inside diameter of the inlet sleeve (DE; D17; D22) plusthe thickness (EE; E17; E22) of the inlet sleeve.
2. A ventilation device having sleeves, according to Claim 1, characgterised in that the inlet sleeve (17) is movable in rotation relative to the outlet sleeve (19) which is fixed.
3. A ventilation device having sleeves, according to Claim 1, characterised in that the inlet sleeve (22) is fixed and includes fixing means (26) for mounting it on the vehicle.
4. A ventilation device having sleeves, according to one of the Claims 1 to 3, characterised in that said inlet sleeve (22) has at one of its ends an outwardly projecting flange (22').
EP85401993A 1984-10-22 1985-10-14 Blower device for the cooling-fluid circuit of a thermal engine Expired EP0183581B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416142A FR2572130B1 (en) 1984-10-22 1984-10-22 IMPROVED VENTILATION DEVICE FOR THE COOLING CIRCUIT OF THE HEAT FLUID OF A HEAT ENGINE
FR8416142 1984-10-22

Publications (2)

Publication Number Publication Date
EP0183581A1 EP0183581A1 (en) 1986-06-04
EP0183581B1 true EP0183581B1 (en) 1988-01-07

Family

ID=9308879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401993A Expired EP0183581B1 (en) 1984-10-22 1985-10-14 Blower device for the cooling-fluid circuit of a thermal engine

Country Status (5)

Country Link
EP (1) EP0183581B1 (en)
JP (1) JPS61182415A (en)
DE (1) DE3561347D1 (en)
ES (1) ES290163Y (en)
FR (1) FR2572130B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2227793B (en) * 1985-11-08 1990-10-31 Papst Motoren Gmbh & Co Kg Miniature axial fan
GB2185074B (en) * 1985-11-08 1990-12-19 Papst Motoren Gmbh & Co Kg Fan
FR2683599B1 (en) * 1991-11-07 1994-03-04 Ecia IMPROVED FAIRING FOR FAN AND ITS APPLICATION TO A MOTOR FAN GROUP OF AUTOMOBILE.
JP4730328B2 (en) * 2007-03-23 2011-07-20 パナソニック電工株式会社 Hanging fixture for lighting equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR84439E (en) * 1961-09-11 1965-02-05 Axial fan
SE451873B (en) * 1982-07-29 1987-11-02 Do G Pk I Experiment AXIALFLEKT

Also Published As

Publication number Publication date
JPS61182415A (en) 1986-08-15
EP0183581A1 (en) 1986-06-04
DE3561347D1 (en) 1988-02-11
FR2572130B1 (en) 1987-02-13
ES290163Y (en) 1986-11-16
FR2572130A1 (en) 1986-04-25
ES290163U (en) 1986-04-01

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