EP0029373A1 - Self-purging heat-exchanger for engine cooling circuits - Google Patents

Self-purging heat-exchanger for engine cooling circuits Download PDF

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Publication number
EP0029373A1
EP0029373A1 EP80401488A EP80401488A EP0029373A1 EP 0029373 A1 EP0029373 A1 EP 0029373A1 EP 80401488 A EP80401488 A EP 80401488A EP 80401488 A EP80401488 A EP 80401488A EP 0029373 A1 EP0029373 A1 EP 0029373A1
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EP
European Patent Office
Prior art keywords
compartment
water box
exchanger according
partition
opening
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
EP80401488A
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German (de)
French (fr)
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EP0029373B1 (en
Inventor
Jean-Pierre Moranne
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.)
Chausson Usines SA
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Chausson Usines SA
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Publication date
Priority claimed from FR7928313A external-priority patent/FR2469685A1/en
Priority claimed from FR8004693A external-priority patent/FR2477277B2/en
Application filed by Chausson Usines SA filed Critical Chausson Usines SA
Publication of EP0029373A1 publication Critical patent/EP0029373A1/en
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Publication of EP0029373B1 publication Critical patent/EP0029373B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0231—Header boxes having an expansion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/52—Heat exchanger temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps

Definitions

  • the present invention relates to heat exchangers and more particularly to heat exchangers used in the cooling circuit of heat engines.
  • US patent 3,576,181 describes a device in which a water pump 7 or other suction device extracts air from the outlet water box from the exchanger to route it to a manifold that contains a reserve of coolant. Is provided within the partition a nurse and a siphon which have the function to prevent air or sheaves p iré by a pipe communicating the bottom of the nurse with the bottom of the water box the exchanger and, consequently, with a liquid supply tube leading to the device to be cooled.
  • DE 27 41 353 describes in an heat exchanger an outlet water box comprising three chambers in which are provided communication lights, connecting the upper part of the three chambers and a communication conduit connecting the lower part of the chamber intermediate with the most extreme chamber which includes a filling plug.
  • the air which may be in the highest tubes is sucked in due to the circulation which is established from the lowest part of the outermost chamber.
  • this outer chamber as well as the intermediate chamber contain air at their upper part and, when the circulation of the liquid in the exchanger is stopped, air can again enter the tubes located at the highest part of the exchanger.
  • US patent 3,051,450 includes an outlet water box divided into two compartments by a vertical partition having a communication hole.
  • the suction of the liquid coming from the tubes of the exchanger is done by a tube which is arranged in the first compartment which is the most close to the outlet of the tubes.
  • air can again enter the uppermost tubes since the two compartments form communicating vessels.
  • U.S. Patent 3,604,502 describes a water box which delimits two chambers separated by a partition but which can communicate by means of a valve placed at the top of the partition.
  • the two compartments of the water box are connected together by a bypass duct to create a suction in that of the compartments which communicates directly with the tubes.
  • US patent 4,098,328 describes a heat exchanger whose outlet water box is separated into two compartments by a perforated partition which constitutes a tranquilization grid so that the outermost compartment into which the filling pipe opens and also the coolant return line contains liquid which is stilled and therefore there is less risk of air bubbles being returned to the system.
  • Patent FR 75 22 444 published under No. 2,278,914 describes a device which is intended to be mounted on existing exchangers and which comprises a suction member penetrating into the water box outlet of the exchanger, this device comprising a valve mechanism to prevent the return of air after the suction of this air, suction which is produced in an attached manifold.
  • This French patent itself refers to patents US Re 27,965 and 3,601,181 which relate to similar objects.
  • the present invention creates a new exchanger which has the advantage of not requiring the installation of an independent expansion tank or manifold in the coolant circulation circuit.
  • the exchanger of the invention ensures permanent degassing of the circuit without there being any operation to be carried out after a first start-up.
  • the self-bleeding exchanger for engine cooling circuits of the type in which the tubes are arranged horizontally and connected by manifold plates covered by water boxes is characterized in that the outlet water box is divided vertically in two compartments, the first communicating with the tubes and the second with a filling base arranged at the top and with a liquid return pipe arranged at the bottom, the partition being pierced with an opening having a passage section introducing a pressure drop at least equal to the height of water in the box for the liquid flowing from one to the other compartment, this opening opening below the level of liquid being in the second compartment and one pipe open at its two ends extending from the highest part of the first compartment to a level of the second compartment located below the level of the liquid in this compartment.
  • Fig. 1 illustrates a cooler exchanger for a vehicle which comprises tubes 1 arranged horizontally and opening into two collecting plates 2 and 3.
  • the tubes are connected to each other by dissipators 4 formed, in the example shown, by corrugated spacers,
  • the collector plates 2 and 3 are covered and tightly connected by water boxes 5, 6.
  • the water box 6 is produced according to the invention to constitute both a manifold and a self-draining device.
  • the drawing shows, in fact, that the water box 6 has internally a partition 7 which separates it in the vertical direction into two compartments 8 and 9,
  • the compartment 8 communicates with the different tubes 1 and is intended to be always filled with coolant.
  • the compartment 9 constitutes a manifold and a compartment for taking up the cooled liquid which is directed towards the cooling jackets of an engine by a tube 10 provided at the lower part of said compartment 9.
  • compartment 9 communicates, at its part upper, with a filling base 11 normally closed by a plug 12 which is advantageously of the type incorporating overpressure and vacuum valves.
  • the partition 7 has a light or opening of passage 13 which is preferably practiced in its lower part.
  • the passage section of the light 13 is chosen to create a pressure drop, the measurement of which is at least equal to the pressure corresponding to the height of water between said light 13 and the highest part of the compartment 8.
  • the partition 7 has at its upper part, and at a level at least equal to that of the tube 1 located the highest, a hole 14 in which is disposed the inlet of a conduit 15 which opens inside the compartment 9 , preferably at the bottom of the latter, so that the mouth of the pipe 15 is always located below the level 16 of the liquid in said compartment 9.
  • the pipe 15 is bent at its lower part at 17 so that the mouth of this pipe is directed upwards.
  • the liquid to be cooled coming from the jackets of the engine is brought for example by a hose to a tube 18 provided in the inlet water box 5 which distributes the liquid to be cooled in the tubes 1.
  • the water box 5 also includes a vent plug 19 placed at its upper part.
  • the vent plug 19 is opened as well as the filling plug 12, liquid is poured through the base 11 and gradually fills the exchanger and the circuit passing from compartment 9 through the light 13 and compartment 8.
  • the vent plug 19 is then replaced as well as the plug 12.
  • the engine is then heated to normal operating temperature , for example until the cooling fan is engaged, which is normally provided with the cooling radiator and which can be controlled by a thermostatic cartridge 20 placed in compartment 9.
  • a large part of the air still contained in the cooling circuit collects in compartment 9 in which the level of the liquid drops. This is due to the pressure drop created by the opening 13 which forces the liquid to rise to the highest tube of the exchanger by driving the air into the compartment 8 at the top of which this air tends to accumulate but from which it is discharged through the hole 14 and the pipe 15.
  • the filling is completed by the plug 12 without again opening the plug 19 and this leaving just a little air above the liquid level 16.
  • the level 16 is brought about 5 cm from the base 11 on which the plug 12 is fixed. The vehicle is then ready to go.
  • the liquid necessarily passes through all the tubes 1 including the one at the highest level because the circulation is always established, on the one hand, through the opening 13 and, on the other hand , through the hole 14 and the pipe 15, so that it is ensured that there is never any air in the tubes 1 located at the highest level.
  • the water boxes 5 and 6 can be produced in different ways and, in particular, the water box 6 forming a nurse can, for example, be produced as illustrated in FIGS. 2 to 5.
  • the part 21 in which the opening 13 and the hole 14 are made.
  • the two parts 21 and 22 can be made of molded synthetic material or of metal and they are combined by any suitable means known in the art.
  • the connection between the two parts is carried out after the installation of the pipe 15 which can be metallic or made of synthetic material and it is then glued or joined by another means, for example by friction, by ultrasound, etc.
  • the part 22 is produced as in FIG. 2 but the part 21a has, from the partition 7, clamps 23 clearly visible in FIG. 4.
  • hole 14 is deleted.
  • a pipe 15a is put in place, the bent end 17a passing through the opening 13 when this pipe is held in the clamps 23.
  • the upper end of the pipe 15a is bevelled and opens at the top of room 21a which is intended to delimit compartment 8.
  • This embodiment enables the pipe 15a to be put in place after the two parts 21a and 22 constituting the water box 6 have been combined.
  • the water box is made of molded material in a completely analogous way to an ordinary water box and there is in this water box a grid 24 comprising spacers 25 to keep it away from the bottom of the water box and thus delimit compartment 9.
  • a seal 26 is made to seal between the water box and the collector plate 3 so that this seal forms at the same time a diaphragm 27 in which the opening 13 is made.
  • the diaphragm 27 forms also the tabs 23 which are used for fitting the pipe 15a,
  • the water box 6 is made of molded material, preferably a synthetic resin, to delimit the two compartments 8 and 9 as well as the partition 7, but it is open at the end forming the filling base.
  • the legs 23 for the pipe 15a can thus come easily from molding.
  • a cover 28 is likewise formed by molding comprising the base 11 and the cover is then joined to the water box by ultrasound or by another method known in the art.
  • the box 5 is provided, in known manner, with a transverse partition 31 delimiting two superimposed compartments 5a, 6a.
  • the liquid to be cooled is brought into the compartment 5a by a pipe 18 and, due to the presence of the transverse partition 31, the liquid is brought to circulate first of all along the arrow f 1 towards the compartment 8 and, then, from the latter following the arrow f 2 , to be brought to compartment 6a which is provided with a discharge pipe 10a.
  • the compartment 8 is itself separated into two compartments 8, 8a by an auxiliary transverse partition 32 which delimits a calibrated lumen 13a introducing a pressure drop in the liquid flowing from the compartment 8 to the compartment 8a.
  • the pressure drop can for example be equal to the height of water in the water box and it is at least equal to a measure for which there is always a higher pressure in the compartment 8 than that prevailing at the lower mouth of the pipe 15.
  • a hole 33 is also provided in the partition 7 near its lower part and in any case below the liquid level 16 to allow the circuit to be filled and make it possible for the level 16 to be variable in the compartment 9 which forms the feeder.
  • the partition 32 can consist of a simple rib provided from the partition 7 to extend up to a certain distance from the collector plate 3.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

La boîte à eau de sortie 6 délimite deux compartiments 8, 9 séparés par une cloison 7 percée d'un trou 13 à sa partie basse et introduisant une perte de charge au moins égale à la hauteur d'eau dans la boîte pour que l'air se trouvant éventuellement dans le compartiment 8 soit chassé par un tuyau 15.The outlet water box 6 delimits two compartments 8, 9 separated by a partition 7 pierced with a hole 13 in its lower part and introducing a pressure drop at least equal to the height of water in the box so that the air possibly in the compartment 8 is expelled by a pipe 15.

Description

La présente invention concerne les échangeurs de chaleur et plus particulièrement les échangeurs de chaleur utilisés dans le circuit de refroidissement des moteurs thermiques.The present invention relates to heat exchangers and more particularly to heat exchangers used in the cooling circuit of heat engines.

On utilise de plus en plus des échangeurs ou radiateurs dont les tubes sont disposés horizontalement et débouchent dans des plaques collectrices recouvertes par des boîtes à eau. Il est fréquent, compte tenu de la place dont on dispose, notamment sous le capot d'un véhicule, que certains des tubes horizontaux de l'échangeur constituent la partie la plus haute du circuit de refroidissement et, par conséquente si le circuit de refroidissement contient de l'air, celui-ci se trouve dans les tubes des rangées supérieures.More and more exchangers or radiators are used, the tubes of which are arranged horizontally and open into collecting plates covered by water boxes. It is common, given the space available, especially under the hood of a vehicle, that some of the horizontal tubes of the exchanger constitute the highest part of the cooling circuit and, consequently if the cooling circuit contains air, it is in the tubes of the upper rows.

Outre que cet air réduit la capacité d'échange thermique de l'échangeur, il en résulte des inconvénients plus graves encore. En effet, lorsque du liquide chaud est amené à l'échangeur, ceux des tubes qui sont parcourus par le liquide sont brutalement dilatés, notamment au niveau de leur jonction avec la plaque collectrice, tandis que ceux qui contiennent de l'air ne sont pas soumis en même temps à la dilatation et les dilatations différentielles qui en résultent peuvent entraîner fréquemment la rupture de la liaison entre les tubes et les plaques collectrices,Besides that this air reduces the heat exchange capacity of the exchanger, this results in even more serious drawbacks. In fact, when hot liquid is brought to the exchanger, those of the tubes which are traversed by the liquid are suddenly expanded, in particular at their junction with the collector plate, while those which contain air are not at the same time subject to expansion and the differential expansions which result therefrom can frequently cause the connection between the tubes and the collector plates to be broken,

Le brevet U.S.A. 3.576.181 décrit un dispositif dans lequel une trompe à eau 7 ou un autre appareil d'aspiration extrait l'air de la boîte à eau de sortie de l'échangeur pour l'acheminer vers une nourrice qui contient une réserve de liquide de refroidissement. Il est prévu à l'intérieur de la nourrice une cloison et un siphon qui ont pour fonction d'empêcher que de l'air soit réaspiré par une conduite faisant communiquer le bas de la nourrice avec le bas de la boîte à eau de l'échangeur et, par conséquent, avec un tube d'alimentation en liquide menant au dispositif à refroidir.US patent 3,576,181 describes a device in which a water pump 7 or other suction device extracts air from the outlet water box from the exchanger to route it to a manifold that contains a reserve of coolant. Is provided within the partition a nurse and a siphon which have the function to prevent air or sheaves p iré by a pipe communicating the bottom of the nurse with the bottom of the water box the exchanger and, consequently, with a liquid supply tube leading to the device to be cooled.

Le DE 27 41 353 décrit dans un échangeur de chaleur une boîte à eau de sortie comportant trois chambres dans lesquelles sont prévues des lumières de commu-, nication reliant la partie supérieure des trois chambres et un conduit de communication reliant la partie inférieure de la chambre intermédiaire avec la chambre la plus extrême qui comporte un bouchon de remplissage. Pendant le fonctionnement, l'air qui peut se trouver dans les tubes les plus hauts est aspiré du fait de la circulation qui s'établit à partir de la partie la plus basse de la chambre la plus extérieure. Cependant, cette chambre extérieure de même que la chambre intermédiaire contiennent de l'air à leur partie supérieure et, lors de l'arrêt de la circulation du liquide dans l'échangeur, de l'air peut à nouveau entrer dans les tubes se trouvant à la partie la plus haute de l'échangeur.DE 27 41 353 describes in an heat exchanger an outlet water box comprising three chambers in which are provided communication lights, connecting the upper part of the three chambers and a communication conduit connecting the lower part of the chamber intermediate with the most extreme chamber which includes a filling plug. During operation, the air which may be in the highest tubes is sucked in due to the circulation which is established from the lowest part of the outermost chamber. However, this outer chamber as well as the intermediate chamber contain air at their upper part and, when the circulation of the liquid in the exchanger is stopped, air can again enter the tubes located at the highest part of the exchanger.

Le brevet U.S.A, 3,051.450 comporte une boîte à eau de sortie divisée en deux compartiments par une cloison verticale présentant un trou de communication. L'aspiration du liquide provenant des tubes de l'échangeur se fait par une tubulure qui est disposée dans le premier compartiment qui est le plus proche de la sortie des tubes. La circulation dyna- mique du liquide fait qu'une partie de celui-ci passe par l'ouverture prévue dans la cloison, cette ouverture étant bordée par un déflecteur et, par conséquent, les bulles d'air entraînées par l'effet de la circulation tendent à se dégager dans le compartiment extérieur. Lors de l'arrêt de la circulation, de l'air peut à nouveau entrer dans les tubes situés les plus hauts puisque les deux compartiments forment des vases communicants.US patent 3,051,450 includes an outlet water box divided into two compartments by a vertical partition having a communication hole. The suction of the liquid coming from the tubes of the exchanger is done by a tube which is arranged in the first compartment which is the most close to the outlet of the tubes. Traffic dy- mi q ue of liquid that a part thereof passes through the aperture in the partition, the opening being bordered by a deflector and therefore the entrained air bubbles by the effect traffic tend to clear in the exterior compartment. When the circulation stops, air can again enter the uppermost tubes since the two compartments form communicating vessels.

Le brevet U.S.A, 3.604.502 décrit une boite à eau qui délimite deux chambres séparées par une cloison mais pouvant communiquer au moyen d'un clapet • placé à la partie haute de la cloison. Les deux compartiments de la boite à eau sont reliés entre eux par un conduit en dérivation pour créer une aspiration dans celui des compartiments qui communique directement avec les tubes.U.S. Patent 3,604,502 describes a water box which delimits two chambers separated by a partition but which can communicate by means of a valve placed at the top of the partition. The two compartments of the water box are connected together by a bypass duct to create a suction in that of the compartments which communicates directly with the tubes.

Le brevet U.S.A. 4.098.328 décrit un échangeur de chaleur dont la boite à eau de sortie est séparée en deux compartiments par une cloison perforée qui constitue une grille de tranquillisation de sorte que le compartiment le plus extérieur dans lequel débouche la tubulure de remplissage et aussi la tubulure de reprise de liquide de refroidissement contiennent du liquide qui est tranquillisé et, par conséquent, il y a un moindre risque que des bulles d'air soient renvoyées dans le circuit.US patent 4,098,328 describes a heat exchanger whose outlet water box is separated into two compartments by a perforated partition which constitutes a tranquilization grid so that the outermost compartment into which the filling pipe opens and also the coolant return line contains liquid which is stilled and therefore there is less risk of air bubbles being returned to the system.

Le brevet FR 75 22 444 publié sous le N° 2.278.914 décrit un dispositif qui est destiné à être monté sur des échangeurs existants et qui comportent un organe d'aspiration pénétrant dans la boite à eau de sortie de l'échangeur, ce dispositif comprenant un mécanisme à clapet pour empêcher le retour de l'air après l'aspiration de cet air, aspiration qui est produite dans une nourrice rapportée. Ce brevet français se réfère lui-même à des brevets US Re 27 965 et 3,601.181 qui concernent des objets analogues.Patent FR 75 22 444 published under No. 2,278,914 describes a device which is intended to be mounted on existing exchangers and which comprises a suction member penetrating into the water box outlet of the exchanger, this device comprising a valve mechanism to prevent the return of air after the suction of this air, suction which is produced in an attached manifold. This French patent itself refers to patents US Re 27,965 and 3,601,181 which relate to similar objects.

La présente invention crée un nouvel échangeur qui présente l'avantage de ne pas nécessiter l'installation d'un vase d'expansion ou nourrice indépendant dans le circuit de circulation du liquide de refroidissement.The present invention creates a new exchanger which has the advantage of not requiring the installation of an independent expansion tank or manifold in the coolant circulation circuit.

De plus, l'échangeur de l'invention assure un dégazage permament du circuit sans qu'il y ait aucune opération à effectuer après une première mise en fonctionnement.In addition, the exchanger of the invention ensures permanent degassing of the circuit without there being any operation to be carried out after a first start-up.

Conformément à l'invention, l'échangeur autopurgeur pour circuits de refroidissement de moteurs du type dans lequel les tubes sont disposés horizontalement et reliés par des plaques collectrices recouvertes par des boîtes à eau est caractérisé en ce que la boîte à eau de sortie est divisée dans le sens vertical en deux compartiments, le premier communiquant avec les tubes et le second avec une embase de remplissage disposée à la partie supérieure et avec une tubulure de reprise de liquide disposée à la partie inférieure, la cloison étant percée d'une ouverture présentant une section de passage introduisant une perte de charge au moins égale à la hauteur d'eau dans la boite pour le liquide circulant de l'un à l'autre compartiment, cette ouverture ouvrant en dessous du niveau de liquide se trouvant dans le second compartiment et un tuyau ouvert à ses deux extrémités s'étendant depuis la partie la plus haute du premier compartiment jusqu'à un niveau du deuxième compartiment situé en dessous du niveau du liquide dans ce compartiment.In accordance with the invention, the self-bleeding exchanger for engine cooling circuits of the type in which the tubes are arranged horizontally and connected by manifold plates covered by water boxes is characterized in that the outlet water box is divided vertically in two compartments, the first communicating with the tubes and the second with a filling base arranged at the top and with a liquid return pipe arranged at the bottom, the partition being pierced with an opening having a passage section introducing a pressure drop at least equal to the height of water in the box for the liquid flowing from one to the other compartment, this opening opening below the level of liquid being in the second compartment and one pipe open at its two ends extending from the highest part of the first compartment to a level of the second compartment located below the level of the liquid in this compartment.

Diverses autres caractéristiques de l'invention ressortent d'ailleurs de la description détaillée qui suit.Various other characteristics of the invention will also emerge from the detailed description which follows.

Des formes de réalisation de l'objet de l'invention sont représentées, à titre d'exemple non limitatifs, au dessin annexé.

  • La fig. 1 est une élévation, en partie arrachée, d'un échangeur autopurgeur à nourrice incorporée faisant application de l'invention.
  • La fig. 2 est une coupe éclatée illustrant un mode de réalisation d'une boîte à eau formant nourrice,
  • La fig. 3 est une coupe-élévation éclatée illustrant une variante de réalisation de la boîte à eau formant nourrice.
  • La fig. 4 est une coupe vue sensiblement suivant la ligne IV-IV de la fig. 3.
  • La fig. 5 est une coupe-élévation illustrant une variante de réalisation de la boite à eau formant nourrice.
  • La fig. 6 est une coupe-élévation schématique d'une autre variante de réalisation.
  • La fig, 7 est une coupe-élévation schématique d'un échangeur autopurgeur à circulation à boucle et à nourrice incorporée faisant application de l'invention.
Embodiments of the object of the invention are shown, by way of nonlimiting example, in the accompanying drawing.
  • Fig. 1 is an elevation, partially broken away, of a self-purging exchanger with incorporated manifold applying the invention.
  • Fig. 2 is an exploded section illustrating an embodiment of a water box forming a nurse,
  • Fig. 3 is an exploded sectional elevation illustrating an alternative embodiment of the water box forming a nurse.
  • Fig. 4 is a section seen substantially along the line IV-IV of FIG. 3.
  • Fig. 5 is a sectional elevation illustrating an alternative embodiment of the water box forming a nurse.
  • Fig. 6 is a schematic sectional elevation of another alternative embodiment.
  • Fig, 7 is a schematic sectional elevation of a Self-purging exchanger with loop circulation and incorporated feeder applying the invention.

La fig. 1 illustre un échangeur refroidisseur pour véhicule qui comporte des tubes 1 disposés horizontalement et débouchant dans deux plaques collectrices 2 et 3. D'une manière connue, les tubes sont reliés les uns aux autres par des dissipateurs 4 constitués, dans l'exemple représenté, par des intercalaires ondulés,Fig. 1 illustrates a cooler exchanger for a vehicle which comprises tubes 1 arranged horizontally and opening into two collecting plates 2 and 3. In a known manner, the tubes are connected to each other by dissipators 4 formed, in the example shown, by corrugated spacers,

Les plaques collectrices 2 et 3 sont recouvertes et reliées de façon étanche par des boîtes à eau 5, 6. La boite à eau 6 est réalisée selon l'invention pour constituer à la fois une nourrice et un dispositif autopurgeur. Le dessin montre, en effet, que la boîte à eau 6 comporte intérieurement une cloison 7 qui la sépare dans le sens vertical en deux compartiments 8 et 9,The collector plates 2 and 3 are covered and tightly connected by water boxes 5, 6. The water box 6 is produced according to the invention to constitute both a manifold and a self-draining device. The drawing shows, in fact, that the water box 6 has internally a partition 7 which separates it in the vertical direction into two compartments 8 and 9,

Le compartiment 8 communique avec les différents tubes 1 et est destiné à être toujours rempli de liquide de refroidissement. Le compartiment 9 constitue une nourrice et un compartiment de reprise du liquide refroidi qui est dirigé vers les chemises de refroidissement d'un moteur par une tubulure 10 prévue à la partie basse dudit compartiment 9. En outre, le compartiment 9 communique, à sa partie supérieure, avec une embase de remplissage 11 normalement fermée par un bouchon 12 qui est avantageusement du type incorporant des clapets de surpression et de dépression.The compartment 8 communicates with the different tubes 1 and is intended to be always filled with coolant. The compartment 9 constitutes a manifold and a compartment for taking up the cooled liquid which is directed towards the cooling jackets of an engine by a tube 10 provided at the lower part of said compartment 9. In addition, compartment 9 communicates, at its part upper, with a filling base 11 normally closed by a plug 12 which is advantageously of the type incorporating overpressure and vacuum valves.

La cloison 7 présente une lumière ou ouverture de passage 13 qui est de préférence pratiquée dans sa partie basse. La section de passage de la lumière 13 est choisie pour créer une perte de charge dont la mesure est au moins égale à la pression correspondant à la hauteur d'eau entre ladite lumière 13 et la partie la plus haute du compartiment 8.The partition 7 has a light or opening of passage 13 which is preferably practiced in its lower part. The passage section of the light 13 is chosen to create a pressure drop, the measurement of which is at least equal to the pressure corresponding to the height of water between said light 13 and the highest part of the compartment 8.

La cloison 7 présente à sa partie supérieure,et à un niveau au moins égal à celui du tube 1 situé le plus haut, un trou 14 dans lequel est disposée l'entrée d'un conduit 15 qui ouvre à l'intérieur du compartiment 9, de préférence à la partie basse de celui-ci, pour que l'embouchure du tuyau 15 soit toujours située en dessous du niveau 16 du liquide se trouvant dans ledit compartiment 9.The partition 7 has at its upper part, and at a level at least equal to that of the tube 1 located the highest, a hole 14 in which is disposed the inlet of a conduit 15 which opens inside the compartment 9 , preferably at the bottom of the latter, so that the mouth of the pipe 15 is always located below the level 16 of the liquid in said compartment 9.

Il est avantageux, ainsi que l'illustre le dessin, que le tuyau 15 soit coudé à sa partie inférieure en 17 pour que l'embouchure de ce tuyau soit dirigée vers le haut.It is advantageous, as illustrated in the drawing, that the pipe 15 is bent at its lower part at 17 so that the mouth of this pipe is directed upwards.

Le liquide à refroidir provenant des chemises du moteur est amené par exemple par une durit à une tubulure 18 prévue dans la boîte à eau d'entrée 5 qui répartit le liquide à refroidir dans les tubes 1.The liquid to be cooled coming from the jackets of the engine is brought for example by a hose to a tube 18 provided in the inlet water box 5 which distributes the liquid to be cooled in the tubes 1.

La boîte à eau 5 comporte également un bouchon de mise à l'air libre 19 placé à sa partie supérieure.The water box 5 also includes a vent plug 19 placed at its upper part.

Pour procéder au remplissage de l'échangeur et du circuit dont il fait partie, le bouchon de mise à l'air libre 19 est ouvert ainsi que le bouchon de remplissage 12, Du liquide est versé par l'embase 11 et remplit progressivement l'échangeur et le circuit en passant du compartiment 9 par la lumière 13 et le compartiment 8. Le bouchon de mise à l'air libre 19 est alors remis en place ainsi que le bouchon 12. On fait ensuite chauffer le moteur jusqu'à la température de fonctionnement normal, par exemple jusqu'à l'enclenchement du ventilateur de refroidissement qui est normalement prévu avec le radiateur de refroidissement et qui peut être commandé par une cartouche thermostatique 20 placée dans le compartiment 9.To fill the exchanger and the circuit of which it is a part, the vent plug 19 is opened as well as the filling plug 12, liquid is poured through the base 11 and gradually fills the exchanger and the circuit passing from compartment 9 through the light 13 and compartment 8. The vent plug 19 is then replaced as well as the plug 12. The engine is then heated to normal operating temperature , for example until the cooling fan is engaged, which is normally provided with the cooling radiator and which can be controlled by a thermostatic cartridge 20 placed in compartment 9.

Une grande partie de l'air encore contenu dans le circuit de refroidissement s'accumule dans le com-' partiment 9 dans lequel le niveau du liquide baissé. Cela est dû à la perte de charge créée par l'ouverture 13 qui oblige le liquide à monter jusqu'au tube le plus haut de l'échangeur en refoulant l'air dans le compartiment 8 au sommet duquel cet air tend à s'accumuler mais à partir duquel il est refoulé par le trou 14 et le tuyau 15. Après arrêt du moteur, on complète le remplissage par le bouchon 12 sans ouvrir à nouveau le bouchon 19 et cela en laissant juste un peu d'air au-dessus du niveau 16 du liquide. Par exemple le niveau 16 est amené environ à 5 cm de l'embase 11 sur laquelle est fixé le bouchon 12. Le véhicule est alors prêt à rouler.A large part of the air still contained in the cooling circuit collects in compartment 9 in which the level of the liquid drops. This is due to the pressure drop created by the opening 13 which forces the liquid to rise to the highest tube of the exchanger by driving the air into the compartment 8 at the top of which this air tends to accumulate but from which it is discharged through the hole 14 and the pipe 15. After stopping the engine, the filling is completed by the plug 12 without again opening the plug 19 and this leaving just a little air above the liquid level 16. For example, the level 16 is brought about 5 cm from the base 11 on which the plug 12 is fixed. The vehicle is then ready to go.

Ensuite, en fonctionnement normal, le liquide passe nécessairement par tous les tubes 1 y compris celui se trouvant au niveau le plus élevé car la circulation s'établit toujours, d'une part, à travers l'ouverture 13 et, d'autre part, à travers le trou 14 et le tuyau 15, de sorte qu'on est assuré qu'il n'existe jamais d'air dans les tubes 1 se trouvant au niveau le plus élevé.Then, in normal operation, the liquid necessarily passes through all the tubes 1 including the one at the highest level because the circulation is always established, on the one hand, through the opening 13 and, on the other hand , through the hole 14 and the pipe 15, so that it is ensured that there is never any air in the tubes 1 located at the highest level.

Après arrêt prolongé du moteur, l'eau se refroidit naturellement, les tubes 1 et le compartiment 8 restent cependant plein d'eau car le tuyau 15 aspire de l'eau dans le compartiment 9 et ainsi l'échangeur se trouve toujours dans les meilleures conditions possibles de fonctionnement.After prolonged stopping of the engine, the water cools naturally, the tubes 1 and the compartment 8 remain however full of water because the pipe 15 draws water in the compartment 9 and thus the exchanger is always in the best possible operating conditions.

Les boites à eau 5 et 6 peuvent être réalisées de différentes façons et, en particulier, la boîte à eau 6 formant nourrice peut, par exemple, être réalisée comme illustré par les fig. 2 à 5.The water boxes 5 and 6 can be produced in different ways and, in particular, the water box 6 forming a nurse can, for example, be produced as illustrated in FIGS. 2 to 5.

A la fig. 2, elle est constituée par deux pièces complémentaires 21 et 22, la pièce 21 formant la cloison 7 dans laquelle sont pratiqués l'ouverture 13 et le trou 14. Les deux pièces 21 et 22 peuvent être réalisées en matière synthétique moulée ou en métal et elles sont réunies par tout moyen approprié connu de la technique. La liaison entre les deux pièces est exécutée après la mise en place du tuyau 15 qui peut être métallique ou en matière synthétique et il est alors collé ou réuni par un autre moyen, par exemple par friction, par ultra-sons, etc.In fig. 2, it consists of two complementary parts 21 and 22, the part 21 forming the partition 7 in which the opening 13 and the hole 14 are made. The two parts 21 and 22 can be made of molded synthetic material or of metal and they are combined by any suitable means known in the art. The connection between the two parts is carried out after the installation of the pipe 15 which can be metallic or made of synthetic material and it is then glued or joined by another means, for example by friction, by ultrasound, etc.

A la fig, 3, la pièce 22 est réalisée comme à la fig. 2 mais la pièce 21a présente, à partir de la cloison 7, des pinces 23 bien visibles à la fig. 4. En outre, le trou 14 est supprimé. Dans cette réalisation, on met en place un tuyau 15a dont l'extrémité coudée 17a passe par l'ouverture 13 lorsque ce tuyau est maintenu dans les pinces 23. L'extrémité supérieure du tuyau 15a est taillée en biseau et ouvre à la partie supérieure de la pièce 21a qui est destinée à délimiter le compartiment 8.In FIG. 3, the part 22 is produced as in FIG. 2 but the part 21a has, from the partition 7, clamps 23 clearly visible in FIG. 4. In addition, hole 14 is deleted. In this embodiment, a pipe 15a is put in place, the bent end 17a passing through the opening 13 when this pipe is held in the clamps 23. The upper end of the pipe 15a is bevelled and opens at the top of room 21a which is intended to delimit compartment 8.

Ce mode de réalisation permet de mettre en place le tuyau 15a après la réunion des deux pièces 21a et 22 constituant la boîte à eau 6.This embodiment enables the pipe 15a to be put in place after the two parts 21a and 22 constituting the water box 6 have been combined.

Dans le mode de réalisation des fig. 2 et 3, il est avantageux, comme cela est déjà expliqué dans ce qui précède, de réaliser la boite à eau 6 en matière moulée, mais elle peut évidemment être fabriquée ê- galement en métal, notamment en métal embouti, les deux pièces étant reliées soit par des brasures, soit par des sertissages comme l'enseigne la technique en cette matière,In the embodiment of FIGS. 2 and 3, it is advantageous, as already explained in the foregoing, to make the water box 6 from molded material, but it can obviously be also made of metal, in particular stamped metal, the two parts being connected either by soldering or by crimping as the technique teaches in this matter,

A la fig. 5, la boite à eau est réalisée en matière moulée de façon tout à fait analogue à une boîte à eau ordinaire et on dispose dans cette boîte à eau une grille 24 comportant des entretoises 25 pour la maintenir à distance du fond de la boîte à eau et délimiter ainsi le compartiment 9.In fig. 5, the water box is made of molded material in a completely analogous way to an ordinary water box and there is in this water box a grid 24 comprising spacers 25 to keep it away from the bottom of the water box and thus delimit compartment 9.

Dans ce cas, on réalise un joint 26 destiné à assurer l'étanchéité entre la boîte à eau et la plaque collectrice 3 de façon que ce joint forme en même temps un diaphragme 27 dans lequel est pratiquée l'ouverture 13. Le diaphragme 27 forme également les pattes 23 qui servent à la mise en place du tuyau 15a,In this case, a seal 26 is made to seal between the water box and the collector plate 3 so that this seal forms at the same time a diaphragm 27 in which the opening 13 is made. The diaphragm 27 forms also the tabs 23 which are used for fitting the pipe 15a,

A la fig. 6, la boîte à eau 6 est réalisée en matière moulée, de préférence une résine synthétique, pour délimiter les deux compartiments 8 et 9 ainsi que la cloison 7, mais elle est ouverte à l'extrémité formant l'embase de remplissage. Les pattes 23 pour le tuyau 15a peuvent ainsi venir facilement de moulage. On forme de même manière par moulage un couvercle 28 comportant l'embase 11 et le couvercle est ensuite réuni à la boîte à eau par ultra-sons ou par un autre procédé connu de la technique.In fig. 6, the water box 6 is made of molded material, preferably a synthetic resin, to delimit the two compartments 8 and 9 as well as the partition 7, but it is open at the end forming the filling base. The legs 23 for the pipe 15a can thus come easily from molding. A cover 28 is likewise formed by molding comprising the base 11 and the cover is then joined to the water box by ultrasound or by another method known in the art.

Selon la fig. 7, pour que l'échangeur puisse fonctionner suivant une circulation dite en boucle, la boîte 5 est munie, de façon connue, d'une cloison transversale 31 délimitant deux compartiments superposés 5a, 6a. Le liquide à refroidir est amené dans le compartiment 5a par une tubulure 18 et, du fait de la présence de la cloison transversale 31, le liquide est amené à circuler tout d'abord suivant la flèche f 1 vers le compartiment 8 et, ensuite, depuis celui-ci suivant la flèche f2, pour être amené au compartiment 6a qui est muni d'une tubulure d'évacuation 10a.According to fig. 7, so that the exchanger can operate in a so-called loop circulation, the box 5 is provided, in known manner, with a transverse partition 31 delimiting two superimposed compartments 5a, 6a. The liquid to be cooled is brought into the compartment 5a by a pipe 18 and, due to the presence of the transverse partition 31, the liquid is brought to circulate first of all along the arrow f 1 towards the compartment 8 and, then, from the latter following the arrow f 2 , to be brought to compartment 6a which is provided with a discharge pipe 10a.

Le compartiment 8 est lui-même séparé en deux compartiments 8, 8a par une cloison transversale auxiliaire 32 qui délimite une lumière calibrée 13a introduisant une perte de charge dans le liquide circulant du compartiment 8 au compartiment 8a, La perte de charge peut par exemple être égale à la hauteur d'eau dans la boîte à eau et elle est au moins égale à une mesure pour laquelle il existe toujours une pression supérieure dans le compartiment 8 à celle régnant à l'embouchure inférieure du tuyau 15. Un trou 33 est également prévu dans la cloison 7 près de sa partie inférieure et en tout cas en dessous du niveau de liquide 16 pour permettre le remplissage du circuit et rendre possible que le niveau 16 soit variable dans le compartiment 9 qui forme nourrice.The compartment 8 is itself separated into two compartments 8, 8a by an auxiliary transverse partition 32 which delimits a calibrated lumen 13a introducing a pressure drop in the liquid flowing from the compartment 8 to the compartment 8a. The pressure drop can for example be equal to the height of water in the water box and it is at least equal to a measure for which there is always a higher pressure in the compartment 8 than that prevailing at the lower mouth of the pipe 15. A hole 33 is also provided in the partition 7 near its lower part and in any case below the liquid level 16 to allow the circuit to be filled and make it possible for the level 16 to be variable in the compartment 9 which forms the feeder.

L'invention n'est pas limitée aux exemples de réalisation représentés et décrits en détail, car diverses modifications peuvent y être apportées sans sortir de son cadre. En particulier, la cloison 32 peut être constituée par une simple nervure prévue à partir de la cloison 7 pour s'étendre jusqu'à une certaine distance de la plaque collectrice 3.The invention is not limited to the embodiments shown and described in detail, since various modifications can be made thereto without departing from its scope. In particular, the partition 32 can consist of a simple rib provided from the partition 7 to extend up to a certain distance from the collector plate 3.

Claims (13)

1 - Echangeur autopurgeur pour circuits de refroidissement de moteurs du type dans lequel les tubes sont disposés horizontalement et reliés par des plaques collectrices recouvertes par des boîtes à eau, caractérisé en ce que la boîte à eau de sortie 6 est divisée dans le sens vertical en deux compartiments 8-9, le premier 8 communiquant avec les tubes 1 et le second 9 ou 8a avec une embase de remplissage 11 disposée à la partie supérieure et avec des moyens de reprise de liquide 10 ou 1, la cloison étant percée d'une ouverture 13 ou 13a présentant • une section de passage introduisant une perte de charge au moins égale à la hauteur d'eau dans la boîte pour le liquide circulant de l'un à l'autre compartiment, cette ouverture ouvrant en dessous du niveau de liquide 16 se trouvant dans le second compartiment 9 et un 'tuyau 15 ouvert à ses deux extrémités s'étendant depuis la partie la plus haute du premier compartiment 8 jusqu'à un niveau du deuxième compartiment situé en dessous du niveau 16 du liquide dans ce compartiment.1 - Self-bleeding exchanger for engine cooling circuits of the type in which the tubes are arranged horizontally and connected by manifold plates covered by water boxes, characterized in that the outlet water box 6 is divided vertically into two compartments 8-9, the first 8 communicating with the tubes 1 and the second 9 or 8a with a filling base 11 arranged at the top and with means for taking up liquid 10 or 1, the partition being pierced with a opening 13 or 13a having • a passage section introducing a pressure drop at least equal to the height of water in the box for the liquid flowing from one to the other compartment, this opening opening below the liquid level 16 located in the second compartment 9 and a pipe 15 open at its two ends extending from the highest part of the first compartment 8 to a level of the second compartment located below the level u 16 of the liquid in this compartment. 2 - Echangeur suivant la revendication 1, caractérisé en ce que le tuyau présente, à sa partie basse, une partie coudée 17 dont l'extrémité est dirigée vers le haut à l'intérieur du deuxième compartiment 9.2 - Exchanger according to claim 1, characterized in that the pipe has, at its lower part, a bent part 17 whose end is directed upwards inside the second compartment 9. 3 - Echangeur suivant l'une des revendications 1 et 2, caractérisé en ce que l'extrémité supérieure du tuyau 15 est montée dans un trou 14 prévu dans la cloison 7 à un niveau au moins égal à celui auquel débouchent le ou les tubes 1 de l'échangeur placés les plus hauts.3 - Exchanger according to one of claims 1 and 2, characterized in that the upper end of the pipe 15 is mounted in a hole 14 provided in the partition 7 at a level at least equal to that to which the tube or tubes 1 of the exchanger placed the tallest. 4 - Echangeur suivant l'une des revendications 1 à 3, caractérisé en ce que le tuyau 15 s'étend en partie dans le premier compartiment 8, l'une de ses extrémités ouvrant à la partie supérieure de ce premier compartiment et une partie coudée 17a dudit tuyau passant par l'ouverture 13 introduisant une perte de charge entre les deux compartiments.4 - Exchanger according to one of claims 1 to 3, characterized in that the pipe 15 extends partly in the first compartment 8, one of its ends opening at the upper part of this first compartment and a bent part 17a of said pipe passing through the opening 13 introducing a pressure drop between the two compartments. 5 - Echangeur suivant l'une des revendications 1 à 4, caractérisé en ce que la boite à eau d'entrée 5 présente au moins une tubulure 18 pour l'amenée du liquide et, à sa partie supérieure, un bouchon 19 de mise à l'air libre.5 - Exchanger according to one of claims 1 to 4, characterized in that the inlet water box 5 has at least one tube 18 for the supply of liquid and, at its upper part, a plug 19 for setting the open air. 6 - Echangeur suivant l'une des revendications 1 à 5, caractérisé en ce que la boîte à eau est constituée par deux pièces complémentaires 21, 22, 21a, l'une étant conformée pour être assemblée de façon étanche à une plaque collectrice 3 et présentant un fond 7 dans lequel est pratiquée l'ouverture 13 et l'autre étant constituée sous la forme d'une boîte ouverte formant la tubulure 10 pour l'évacuation du liquide ainsi qu'une embase de remplissage 11 destinée à être fermée par un bouchon 12 de préférence du type à clapet pression et dépression.6 - Exchanger according to one of claims 1 to 5, characterized in that the water box is constituted by two complementary parts 21, 22, 21a, one being shaped to be assembled in a sealed manner to a header plate 3 and having a bottom 7 in which the opening 13 is made and the other being constituted in the form of an open box forming the tube 10 for the evacuation of the liquid as well as a filling base 11 intended to be closed by a plug 12 preferably of the pressure and vacuum valve type. 7 - Echangeur suivant l'une des revendications 1 à 6, caractérisé en ce que la boîte à eau comportant la cloison est fabriquée en matière moulée.7 - Exchanger according to one of claims 1 to 6, characterized in that the water box comprising the partition is made of molded material. 8 - Echangeur suivant l'une des revendications 1 à 5, caractérisé en ce que la boîte à eau est fabriquée en matière moulée pour délimiter près de son fond destiné à s'étendre dans une direction approximativement verticale,une embase de remplissage 11 et, près de sa partie inférieure, une tubulure d'évacuation 10, le bord libre de la boîte à eau formant un talon d'appui pour déformer un joint d'étanchéité 26 destiné à être interposé entre la boîte à eau et la plaque collectrice, ce joint d'étanchéité formant un diaphragme 27 dans lequel est pratiquée l'ouverture 13 introduisant une perte de charge, ce diaphragme prenant appui contre une grille 24 maintenue à distance du fond de la boîte à eau par des entretoises 25.8 - Exchanger according to one of claims 1 to 5, characterized in that the water box is made of molded material to delimit near its bottom intended to extend in an approximately vertical direction, a filling base 11 and, near its lower part, a discharge pipe 10, the free edge of the water box forming a bearing heel to deform a joint seal 26 intended to be interposed between the water box and the collector plate, this seal forming a diaphragm 27 in which is made the opening 13 introducing a pressure drop, this diaphragm bearing against a grid 24 held away from the bottom of the water box by spacers 25. 9 - Echangeur suivant l'une des revendications 1 a 8, caractérisé par des pinces 23 formées à partir de la cloison 7, ou du diaphragme 27 en tenant lieu, pour la fixation du tube 15a ouvrant à la partie haute de la boite à eau et passant par l'ouverture 13 introduisant une perte de charge.9 - Exchanger according to one of claims 1 to 8, characterized by clamps 23 formed from the partition 7, or the diaphragm 27 taking place, for fixing the tube 15a opening to the upper part of the water box and passing through the opening 13 introducing a pressure drop. 10 - Echangeur suivant l'une des revendications 1 à 9, caractérisé en ce que le second compartiment 9 est prévu de capacité suffisante pour former une nourrice.10 - Exchanger according to one of claims 1 to 9, characterized in that the second compartment 9 is provided with sufficient capacity to form a nurse. 11 - Echangeur suivant l'une des revendications 1 à 10, caractérisé en ce que la boîte à eau est fabriquée en matière synthétique moulée pour délimiter les deux compartiments 8, 9 et la cloison 7 qui les sépare, cette boîte à eau étant ouverte à sa partie supérieure et recevant un couvercle 28 également en matière synthétique moulé et fixé par ultra-sons ou un autre procédé de la technique.11 - Exchanger according to one of claims 1 to 10, characterized in that the water box is made of molded synthetic material to delimit the two compartments 8, 9 and the partition 7 which separates them, this water box being open to its upper part and receiving a cover 28 also made of molded synthetic material and fixed by ultrasound or another method of the technique. l2 ÷ Echangeur suivant l'une des revendications 1 à 11, caractérisé en ce que, dans l'application à un échangeur à circuit en boucle, la boîte à eau d'entrée est séparée de façon connue en soi par une cloison transversale 31, des tubulures d'amenée 18 et de sortie 10a étant prévues dans chacun des deux compartiments 5a, 6a que délimite cette cloison transversale et en ce que le trou calibré 13a est formé dans une cloison auxiliaire 32 séparant le premier compartiment 8 communiquant avec les tubes 1 en deux compartiments 8-9 de sorte que la perte de charge créée par le trou calibré produit une surpression à la partie supérieure du premier compartiment.l2 ÷ Exchanger according to one of claims 1 to 11, characterized in that, in the application to a loop circuit exchanger, the inlet water box is separated in a manner known per se by a transverse partition 31, inlet and outlet pipes 18 and outlet 10a being provided in each of the two compartments 5a, 6a which delimits this transverse partition and in that the calibrated hole 13a is formed in an auxiliary partition 32 separating the first compartment 8 communicating with the tubes 1 into two compartments 8-9 so that the loss load created by the calibrated hole produces an overpressure at the top of the first compartment. 13 - Echangeur suivant la revendication 12, caractérisé en ce que la cloison transversale 32 divisant le premier compartiment est formée par une nervure saillant vers la plaque collectrice.13 - Exchanger according to claim 12, characterized in that the transverse partition 32 dividing the first compartment is formed by a rib projecting towards the collector plate.
EP80401488A 1979-11-16 1980-10-20 Self-purging heat-exchanger for engine cooling circuits Expired EP0029373B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7928313A FR2469685A1 (en) 1979-11-16 1979-11-16 Purging of air from automobile radiator - uses vent tube connecting upper part of inner tank to lower part of outer tank
FR7928313 1979-11-16
FR8004693 1980-03-03
FR8004693A FR2477277B2 (en) 1980-03-03 1980-03-03 SELF-PURIFYING EXCHANGER FOR ENGINE COOLING CIRCUITS

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EP0029373A1 true EP0029373A1 (en) 1981-05-27
EP0029373B1 EP0029373B1 (en) 1984-06-27

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EP80401488A Expired EP0029373B1 (en) 1979-11-16 1980-10-20 Self-purging heat-exchanger for engine cooling circuits

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US (1) US4366858A (en)
EP (1) EP0029373B1 (en)
BR (1) BR8007407A (en)
DE (1) DE3068367D1 (en)
ES (1) ES496878A0 (en)

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CN104373192B (en) * 2014-11-25 2017-03-29 江苏常工动力机械有限公司 A kind of water saving funnel
KR20170069089A (en) * 2015-12-10 2017-06-20 현대자동차주식회사 Radiator for vehicle
CN108397275A (en) * 2018-04-19 2018-08-14 精进电动科技股份有限公司 A kind of gradient type car expansion tank

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FR2509788A1 (en) * 1981-07-16 1983-01-21 Valeo WATERBOARD DEVICE WITH INTEGRATED EXPANSION VESSEL FOR A HEAT EXCHANGER, FOR EXAMPLE PART OF AN INTERNAL COMBUSTION ENGINE COOLING CIRCUIT
FR2511489A1 (en) * 1981-08-11 1983-02-18 Valeo Radiator for water cooled IC-engine - has water and expansion chambers with interconnecting degassing pipe from expansion chamber
FR2511428A1 (en) * 1981-08-12 1983-02-18 Valeo WATER BOX DEVICE AND EXPANSION TANK, FOR EXAMPLE ONE PIECE MOLD, ESPECIALLY FOR AN INTERNAL COMBUSTION ENGINE RADIATOR
EP0075750A2 (en) * 1981-09-30 1983-04-06 Nissan Motor Co., Ltd. A heater core
EP0075750A3 (en) * 1981-09-30 1983-10-05 Nissan Motor Company, Limited A heater core of an automotive air conditioning device
FR2514479A1 (en) * 1981-10-13 1983-04-15 Valeo LIQUID CIRCULATION HEAT EXCHANGER, ESPECIALLY FOR A MOTOR VEHICLE
FR2535838A1 (en) * 1982-11-10 1984-05-11 Valeo Radiator tank and expansion vessel comprising a degassing pipe, particularly for an internal-combustion engine radiator
FR2562225A1 (en) * 1984-04-02 1985-10-04 Chausson Usines Sa Heat exchanger with automatic air bleeding
US4747446A (en) * 1985-10-15 1988-05-31 Valeo Water box and expansion chamber device for a heat exchanger
EP0219417A1 (en) * 1985-10-15 1987-04-22 Valeo Water box and expansion chamber for a heat exchanger
FR2588647A1 (en) * 1985-10-15 1987-04-17 Valeo WATER BOX AND EXPANSION VESSEL DEVICE FOR HEAT EXCHANGER
FR2673445A1 (en) * 1991-02-28 1992-09-04 Behr Gmbh & Co TRANSVERSE CIRCULATING RADIATOR, ESPECIALLY WATER / AIR RADIATOR FOR INTERNAL COMBUSTION ENGINES.
ES2051205A2 (en) * 1991-02-28 1994-06-01 Behr Gmbh & Co Cross flow cooling device for IC engine - has second connection tube between radiator tank and expansion tank
EP0554168A1 (en) * 1992-01-30 1993-08-04 Valeo Thermique Moteur Heat exchanger and process for cooling a combustion engine in disphasic mode
FR2686968A1 (en) * 1992-01-30 1993-08-06 Valeo Thermique Moteur Sa HEAT EXCHANGER AND METHOD FOR COOLING A HEAT ENGINE IN TWO-PHASE MODE.
DE19502843A1 (en) * 1994-01-28 1995-08-03 Radiadores Ordonez S A Degassing circuit of radiators
DE102014010261A1 (en) 2013-07-11 2015-01-15 Audi Ag Fluid-guiding system, in particular coolant system
DE102014010261B4 (en) * 2013-07-11 2018-02-22 Audi Ag Coolant system
CN105525979A (en) * 2014-10-21 2016-04-27 摩丁制造公司 Cooling Module with Integral Surge Tank
CN105644697A (en) * 2014-11-27 2016-06-08 本田技研工业株式会社 Storage bin structure of saddle-riding-type vehicle
CN105644697B (en) * 2014-11-27 2018-09-14 本田技研工业株式会社 The storage box structure of saddle-ride type vehicle

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US4366858A (en) 1983-01-04
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DE3068367D1 (en) 1984-08-02
EP0029373B1 (en) 1984-06-27
ES496878A0 (en) 1982-02-01

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