EP1558885A2 - Heat exchanger module which is intended, in particular, for motor vehicles - Google Patents

Heat exchanger module which is intended, in particular, for motor vehicles

Info

Publication number
EP1558885A2
EP1558885A2 EP03795048A EP03795048A EP1558885A2 EP 1558885 A2 EP1558885 A2 EP 1558885A2 EP 03795048 A EP03795048 A EP 03795048A EP 03795048 A EP03795048 A EP 03795048A EP 1558885 A2 EP1558885 A2 EP 1558885A2
Authority
EP
European Patent Office
Prior art keywords
exchanger
manifold
heat exchange
exchange module
tubes
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
EP03795048A
Other languages
German (de)
French (fr)
Other versions
EP1558885B1 (en
Inventor
Michel Potier
Carlos Martins
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Thermique Habitacle
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Thermique Habitacle filed Critical Valeo Thermique Habitacle
Publication of EP1558885A2 publication Critical patent/EP1558885A2/en
Application granted granted Critical
Publication of EP1558885B1 publication Critical patent/EP1558885B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/067—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0435—Combination of units extending one behind the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/02—Arrangements of fins common to different heat exchange sections, the fins being in contact with different heat exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/12—Fins with U-shaped slots for laterally inserting conduits

Definitions

  • Heat exchange module in particular for motor vehicles
  • the invention relates to a heat exchange module consisting of a main exchanger and at least one secondary heat exchanger mounted parallel to the main exchanger so as to constitute a single assembly whose exchangers are traversed by the same flow. air.
  • the invention relates to a heat exchange module consisting of a main exchanger and at least one secondary heat exchanger, the main heat exchanger and the secondary heat exchanger comprising a body provided with tubes. for circulation of fluids and at least one manifold provided with a manifold perforated with holes for receiving the tubes of the body of the exchanger, the module comprising cooling fins common to the main exchanger and to at least one secondary exchanger, these fins being mounted on the tubes of the main exchanger and projecting from the latter substantially perpendicular to its plane, the parts of the fins projecting from the main exchanger comprising cutouts for receiving the secondary exchanger.
  • a heat exchange module of the type described above may consist of a vehicle engine cooling radiator and one or more secondary exchangers, generally a condenser forming part of the air conditioning circuit of the vehicle interior automobile or an oil cooler.
  • the tubes of the secondary exchanger (or secondary exchangers) are forced into the cutouts of the common fins. These tend to deviate. This is why it is necessary to maintain them by means of a comb-shaped tool inserted between the tubes of the main exchanger. This operation leaves a clearance of several millimeters between the manifold of the main exchanger and the first fin. This results in several drawbacks. On the one hand, part of the tubes is devoid of fins, which reduces the heat exchange capacity and therefore the efficiency of the exchanger. On the other hand, the clearance left between the face outside of the manifold and the first fin can cause corrosion of the tubes.
  • the tubes must be flared by means of a flaring punch to avoid tearing of the manifolds under the effect of the pressure of the fluid in the cooling circuit and the mechanical stresses to which the boxes collectors are subject.
  • the invention specifically relates to a heat exchange module which overcomes these drawbacks.
  • the manifold or boxes of the main exchanger comprise at least one projection extending in the direction of said secondary exchanger (s) in order to cooperate with the manifold (s) of the or said secondary exchangers and / or with said fins so as to structure said module.
  • said projection consists of a comb comprising cutouts for receiving the tubes of the secondary exchanger (or secondary exchangers, if necessary) this comb being able to keep the parts of the fins projecting from the body of the body tight. main exchanger.
  • the comb can advantageously be provided over the entire length of the manifold of the main exchanger. However, this characteristic is not imperative. The comb could only be provided over part of the length of the main exchanger manifold.
  • the comb is preferably made in one piece with the manifold of the main exchanger, in particular by molding a plastic material.
  • the comb could, as a variant, be produced separately from the manifold and be made integral with the latter by any appropriate means.
  • each manifold of the main heat exchanger may have only one manifold, for example if it is equipped with U-shaped tubes.
  • the tubes are straight and each exchanger has a manifold at each end of the tubes.
  • each manifold of the main heat exchanger includes a fin retaining comb.
  • the comb is supported on the manifolds of the secondary exchanger (or secondary exchangers, if there are several).
  • the manifolds of the secondary exchangers constitute stops which stop the movement of the comb and consequently retain the manifold of the main exchanger.
  • the comb thus makes it possible to ensure the retention of the manifold of the main exchanger via the boxes of the secondary exchanger (or secondary exchangers, if applicable).
  • a seal is placed outside the manifold of the manifold.
  • the seal is supported on the first fin of the main exchanger, so that it effectively protects the tubes of the latter against the risks of corrosion in this generally critical area on mechanically assembled exchangers, using a seal in elastomer.
  • a conventional type exchanger it would not be possible to mount the seal on the outside of the manifold because the tubular part of the seal which seals the tube would risk being cut by the collar formed in the manifold.
  • the seal mounted on the outside of the manifold does not have this drawback.
  • the manifold has a shoulder which provides space for the seal.
  • the collector is made of plastic.
  • the manifold has a tubular shape of closed section made in one piece.
  • the manifold is closed at its two ends by plugs. These plugs can be, in particular, welded by friction or by any other suitable technique.
  • the manifold comprises a lateral opening closed by a cover.
  • the cover can be welded to the manifold by any suitable technique, in particular by friction.
  • This design allows the demoulding of pipes flattened at the base with a connection radius favorable to the flow of the exchanger fluid and, in addition, a reduced header box height.
  • the manifold preferably comprises forms capable of receiving and fixing the nozzle of a motor-ventilator group.
  • FIG. 1 is a three-dimensional view of a heat exchange module of the prior art consisting of a cooling radiator and a secondary exchanger, namely an air conditioning condenser;
  • FIG. 1 shows the common fins of the heat exchange module of Figure 1;
  • FIG. 3 is an exploded perspective view of a first embodiment of the manifold of the main exchanger of a heat exchange module according to the invention
  • - Figure 4 is a bottom view of the manifold shown in Figure 3;
  • - Figure 5 shows on an enlarged scale a pair of teeth of the comb of the heat exchange module shown in Figures 3 and 4;
  • FIG. 6 is a partial sectional view on an enlarged scale of the manifold of the main exchanger and the secondary exchanger of the heat exchange module shown in Figures 3 and 4;
  • FIGS. 7 to 9 are three partial perspective views which illustrate different stages of assembly of a second embodiment of a heat exchange module according to the present invention.
  • FIG. 10 is a sectional view of the heat exchange module of Figure 9, passing through the axis of the tube.
  • the heat exchange module of the prior art is composed of a radiator 1 for cooling a motor vehicle engine and a condenser 2 for air conditioning, these two exchangers being generally planar .
  • the radiator 1 and the condenser 2 respectively constitute a main exchanger and a secondary exchanger.
  • the radiator 1 consists in a known manner of a body 3 produced from a bundle of vertical fluid circulation tubes and mounted between two manifolds 4 and 5.
  • the manifolds are arranged along two parallel sides of the body and provided with inlet pipe 6 and outlet (not shown) of the cooling fluid.
  • the condenser 2 also consists of a body 7 produced from a bundle of vertical tubes 23 for circulation of fluid mounted between two manifolds 8 and 9.
  • the manifolds 8 and 9 are arranged along two parallel sides of the body 7. They are provided with two inlet and outlet pipes 10 for the refrigerant.
  • the heat exchange module comprises fins 11 common to the cooling radiator 1 and to the condenser 2. These fins 11 are shown in more detail in FIG. 2. They are mounted so conventional on the tubes 22 of the body 3 of the heat exchanger 1. They have protruding extensions 12, perpendicular to the plane of the exchangers, on the side of the secondary heat exchanger 2.
  • the extensions 12 include cutouts 13 open at direction of the exchanger 2. These cutouts have a shape corresponding to the cross section of the tubes 23 of the condenser 2, which are here flat tubes, and even not as these tubes, so as to receive them.
  • the tubes 23 of the secondary exchanger 2 are forcibly assembled in the cutouts 13 of the fins. This ensures friction locking between the walls of the tubes 23 and the edges of the cutouts 13.
  • the assembly of the exchanger 1 provided with its fins 11 with the exchanger 2 devoid of fins is carried out as follows.
  • the exchanger 2 is simply pressed against the exchanger 1 by forcibly engaging the tubes 23 of the exchanger 2 in the cutouts 13 of the extensions 12 of the fins, which ensures the blocking of the exchanger.
  • the manifold 5 of the main radiator 1 consists of a manifold or manifold plate (not visible in FIG. 1) made of metal and comprising holes for receiving the tubes 22 of the exchanger 1.
  • the manifold 5 comprises on the other hand a cover 14, generally made of plastic.
  • the assembly of the cover 14 on the collector is generally done by means of crimping lugs folded over a peripheral rim of the cover 9.
  • the peripheral rim which surrounds the manifold 9 and which is intended to receive the lugs which allow the crimping of the cover 9 on the collector increases the size of the cooling radiator 1 and consequently the overall size of the module by imposing the presence of a space between the main exchanger and the secondary exchanger.
  • a rubber or elastomer seal is placed inside the manifold 5.
  • This seal has tubular parts which engage in the holes for receiving the tubes 22 of the main exchanger 1.
  • the fins 11 must be maintained during the introduction of the tubes 23 of the condenser 2 by an appropriate tool inserted between the last fin of the bundle and the external face of the manifold. This operation leaves a clearance of several millimeters between the manifold and the first fin. This results in a decrease in the exchange surface between the air flow which passes through the exchanger and the fins.
  • the tubes 22 of the main exchanger remain bare because the tubular part of the joint cannot extend over the entire length for reasons of demolding.
  • FIGS. 3, 4 and 6 various views which show a first embodiment of the manifold of the main exchanger 1 of a heat exchange module according to the invention.
  • FIGS. 3, 4 and 6 the parts identical to those of the heat exchange module shown in FIG. 1 have been designated by identical references.
  • the manifold 5 of the main exchanger 1 comprises a comb 28 which, in the embodiment shown, extends over the entire length of the manifold 5.
  • the comb 28 could only extend over a only part of the length of the manifold.
  • the comb 28 is made in one piece with the manifold 5, advantageously by molding a plastic material.
  • the comb could be produced separately and made integral with the manifold.
  • the comb 28 consists of teeth 29 arranged in pairs and which delimit between them a cutout 30 (see FIG. 5) whose function is to maintain the first fins during the assembly of the tubes 23.
  • the cutouts 30 are intended to receive the tubes 23 of the secondary exchanger 2 when the main exchanger and the secondary exchanger are assembled (see Figure 6).
  • the comb 28 has a face 31 directed towards the fins 11 and on which the latter come to bear.
  • the comb 28 fulfills the function which, in the prior art, is held by a special auxiliary tool temporarily introduced during assembly of the tubes 23 of the condenser 2 between the fins 11 and the manifold 5, and more particularly between the fins 11 and the external face of the manifold. Since the use of this tool is no longer necessary, it is no longer useful to leave a clearance of several millimeters between the first fin and the manifold so that the tubes 22 can have fins over their entire length .
  • the seal 33 can be arranged outside of the manifold 5, on the face of the manifold 35 facing the fin bundle 11. This arrangement is advantageous because the seal 33 protects the part of the tube located between the first fin and the external face of the manifold 35 against corrosion.
  • a shoulder 37 constitutes a stop for the set of fins 11 so as to avoid compression of the seal 33.
  • the comb 28 has a face 39 directed towards the manifold 8 of the exchanger 2 which bears on this manifold 8.
  • the teeth 29 of the comb 28 thus take up the stripping forces from the manifold 5 under the effect of the pressure of the coolant which circulates in the tubes 22.
  • the tubes of the main exchanger 1, such as 22, have a part flared mechanically by the introduction of a flaring punch.
  • the purpose of this flaring is to prevent tearing of the manifolds.
  • these efforts are taken up by the manifolds 8 and 9 of the secondary exchanger 2, the flaring of the tubes 22 is no longer justified. Consequently, these tubes can be straight and have a constant section over their entire length. They may, however, include a constriction or chamfer 41 at their end in order to favor their introduction into the joint 33 (FIG. 6).
  • the fact that the tubes are not flared allows greater freedom in the choice of the alloy in which these tubes are made. It is thus possible to use new alloys and harder metallurgical states which confer better resistance of the tube to corrosion.
  • the manifold is constituted by a tubular shape of closed section. It is made in one piece.
  • the collector and the cover which, according to the prior art, are produced in two parts of different materials (steel collector and plastic cover), are, in this embodiment, produced in a single molded part made of plastic.
  • the manifold is closed at its two ends by plugs 43 ( Figures 3 and 4). These plugs can be friction welded to the manifold.
  • the manifold is made of plastic, it can easily include fixing lugs such as 45 which allow it to be fixed to the chassis of the vehicle. It may also include forms 47 able to receive and fix the nozzle of a motor-fan unit (not shown).
  • FIG. 7 to 10 a second embodiment of the manifold of a module according to the invention.
  • the manifold 5 also made of molded plastic, consists of a box 51 comprising the inlet and outlet pipes 6 of the fluid.
  • the box 51 also includes the holes intended for the reception of the tubes 22 of the main exchanger 1.
  • the comb 28 is also formed on the box 31.
  • the latter is closed laterally by a cover 53, which may optionally be flat.
  • the cover 53 is fixed to the box 51 by any suitable means, in particular by friction welding.
  • the comb 28 could also be provided on the cover 53. This design allows the demoulding of tubes flattened at the base with a connection radius favorable to the flow of the liquid and in addition a reduced manifold height.

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

Abstract

The invention relates to a heat exchanger module comprising a main heat exchanger (1) and at least one secondary heat exchanger (2). According to the invention, the main heat exchanger (1) and the secondary heat exchanger (2) comprise (i) a body (3, 7) which is equipped with fluid circulation tubes (22, 23) and (ii) at least one collecting box (5, 8) with a manifold (35) which is perforated with holes for receiving the tubes (22) from the body (3). The inventive module also comprises cooling fins (11). According to the invention, the collecting box or boxes (5) of the main exchanger comprise at least one projecting element (28) which extends in the direction of the secondary exchanger(s) in order to co-operate with the collecting box or boxes (5, 8) of the secondary exchanger(s) and/or with said fins (11), such as to form the module.

Description

Module d'échange de chaleur, en particulier pour véhicules automobilesHeat exchange module, in particular for motor vehicles
L'invention concerne un module d'échange de chaleur constitue d'un échangeur principal et d'au moins un échangeur de chaleur secondaire monté parallèlement à l'échangeur principal de manière à constituer un ensemble unique dont les échangeurs sont traversés par un même flux d'air.The invention relates to a heat exchange module consisting of a main exchanger and at least one secondary heat exchanger mounted parallel to the main exchanger so as to constitute a single assembly whose exchangers are traversed by the same flow. air.
Plus particulièrement, l'invention concerne un module d'échange de chaleur constitué d'un échangeur principal et d'au moins un échangeur de chaleur secondaire, l'échangeur de chaleur principal et l'échangeur de chaleur secondaire comportant un corps muni de tubes de circulation de fluides et au moins une boîte collectrice munie d'un collecteur perforé de trous de réception des tubes du corps de l'échangeur, le module comportant des ailettes de refroidissement communes à l'échangeur principal et à au moins un échangeur secondaire, ces ailettes étant montées sur les tubes de l'échangeur principal et faisant saillie de ce dernier sensiblement perpendiculairement à son plan, les parties des ailettes faisant saillie de l'échangeur principal comportant des découpes de réception de l'échangeur secondaire.More particularly, the invention relates to a heat exchange module consisting of a main exchanger and at least one secondary heat exchanger, the main heat exchanger and the secondary heat exchanger comprising a body provided with tubes. for circulation of fluids and at least one manifold provided with a manifold perforated with holes for receiving the tubes of the body of the exchanger, the module comprising cooling fins common to the main exchanger and to at least one secondary exchanger, these fins being mounted on the tubes of the main exchanger and projecting from the latter substantially perpendicular to its plane, the parts of the fins projecting from the main exchanger comprising cutouts for receiving the secondary exchanger.
Un module d'échange de chaleur du type décrit ci-dessus pourra être constitué d'un radiateur de refroidissement du moteur du véhicule et d'un ou plusieurs échangeurs secondaires, généralement un condenseur faisant partie du circuit de climatisation de l'habitacle du véhicule automobile ou un radiateur d'huile.A heat exchange module of the type described above may consist of a vehicle engine cooling radiator and one or more secondary exchangers, generally a condenser forming part of the air conditioning circuit of the vehicle interior automobile or an oil cooler.
Pendant l'assemblage du module les tubes de l'échangeur secondaire (ou des échangeurs secondaires) sont enfoncés à force dans les découpes des ailettes communes. Ces dernières ont tendance à s'écarter. C'est pourquoi il est nécessaire de les maintenir au moyen d'un outil en forme de peigne inséré entre les tubes de l'échangeur principal. Cette opération conduit à laisser un jeu de plusieurs millimètres entre le collecteur de l'échangeur principal et la première ailette. Il en résulte plusieurs inconvénients. D'une part, une partie des tubes est dépourvue d'ailettes, ce qui diminue la capacité d'échange de chaleur et par conséquent le rendement de l'échangeur. D'autre part, le jeu laissé entre la face extérieure du collecteur et la première ailette peut être source de corrosion des tubes.During assembly of the module, the tubes of the secondary exchanger (or secondary exchangers) are forced into the cutouts of the common fins. These tend to deviate. This is why it is necessary to maintain them by means of a comb-shaped tool inserted between the tubes of the main exchanger. This operation leaves a clearance of several millimeters between the manifold of the main exchanger and the first fin. This results in several drawbacks. On the one hand, part of the tubes is devoid of fins, which reduces the heat exchange capacity and therefore the efficiency of the exchanger. On the other hand, the clearance left between the face outside of the manifold and the first fin can cause corrosion of the tubes.
Par ailleurs, dans cette conception connue, les tubes doivent être évasés au moyen d'un poinçon d'évasement pour éviter l'arrachement des boîtes collectrices sous l'effet de la pression du fluide du circuit de refroidissement et des sollicitations mécaniques auxquels les boîtes collectrices sont soumises.Furthermore, in this known design, the tubes must be flared by means of a flaring punch to avoid tearing of the manifolds under the effect of the pressure of the fluid in the cooling circuit and the mechanical stresses to which the boxes collectors are subject.
L'invention a précisément pour objet un module d'échange de chaleur qui permet de remédier à ces inconvénients.The invention specifically relates to a heat exchange module which overcomes these drawbacks.
Ces buts sont atteints, conformément à l'invention, par le fait que la ou les boîtes collectrices de l'échangeur principal comportent au moins une saillie s'étendant en direction du ou desdits échangeurs secondaires pour coopérer avec la ou les boîtes collectrices du ou desdits échangeurs secondaires et/ou avec lesdites ailettes de manière à structurer ledit module.These objects are achieved, in accordance with the invention, by the fact that the manifold or boxes of the main exchanger comprise at least one projection extending in the direction of said secondary exchanger (s) in order to cooperate with the manifold (s) of the or said secondary exchangers and / or with said fins so as to structure said module.
Avantageusement, ladite saillie est constituée d'un peigne comportant des découpes de réception des tubes de l'échangeur secondaire (ou des échangeurs secondaires, le cas échéant) ce peigne étant apte à maintenir serrées les parties des ailettes faisant saillie du corps de l'échangeur principal.Advantageously, said projection consists of a comb comprising cutouts for receiving the tubes of the secondary exchanger (or secondary exchangers, if necessary) this comb being able to keep the parts of the fins projecting from the body of the body tight. main exchanger.
Grâce à cette caractéristique, il n'est pas nécessaire d'utiliser un outil en forme, classiquement utilisé jusqu'à présent. La fonction de maintien des ailettes, durant l'insertion en force des tubes de l'échangeur secondaire dans les découpes des ailettes communes est assurée par le peigne prévu sur la boîte collectrice de l'échangeur principal. Par suite, il est possible de disposer des ailettes de refroidissement sur toute la longueur des tubes de l'échangeur principal, ce qui augmente sa capacité d'échange de chaleur et par suite son rendement. Par ailleurs, les risques de corrosion des tubes sont éliminés ou en tout cas fortement diminués. Si le module d'échange de chaleur ne comporte qu'un seul échangeur secondaire, la boîte collectrice ne comportera qu'un seul peigne. Si le module d'échange de chaleur comporte un échangeur de chaleur secondaire de part et d'autre de l'échangeur principal, la boîte collectrice de l'échangeur principal pourra comporter un peigne sur chacune de ses faces.Thanks to this characteristic, it is not necessary to use a shaped tool, conventionally used until now. The function of holding the fins, during the forceful insertion of the tubes of the secondary exchanger in the cutouts of the common fins is ensured by the comb provided on the manifold of the main exchanger. As a result, it is possible to have cooling fins over the entire length of the tubes of the main exchanger, which increases its heat exchange capacity and consequently its efficiency. Furthermore, the risks of corrosion of the tubes are eliminated or in any case greatly reduced. If the heat exchange module has only one secondary exchanger, the manifold will have only one comb. If the heat exchange module comprises a secondary heat exchanger on either side of the main exchanger, the manifold of the main exchanger may have a comb on each of its faces.
Le peigne peut avantageusement être prévu sur toute la longueur de la boîte collectrice de l'échangeur principal. Toutefois, cette caractéristique n'est pas impérative. Le peigne pourrait n'être prévu que sur une partie de la longueur de la boîte collectrice de l'échangeur principal.The comb can advantageously be provided over the entire length of the manifold of the main exchanger. However, this characteristic is not imperative. The comb could only be provided over part of the length of the main exchanger manifold.
Le peigne est de préférence réalisé d'une seule pièce avec la boîte collectrice de l'échangeur principal, en particulier par moulage d'une matière plastique. Toutefois, le peigne pourrait, en variante, être réalisé séparément de la boîte collectrice et être rendu solidaire de cette dernière par tout moyen approprié.The comb is preferably made in one piece with the manifold of the main exchanger, in particular by molding a plastic material. However, the comb could, as a variant, be produced separately from the manifold and be made integral with the latter by any appropriate means.
Enfin, les échangeurs du module d'échange de chaleur peuvent ne comporter qu'une seule boîte collectrice, par exemple s'il est équipé de tubes en U. Toutefois, dans la plupart des cas, les tubes sont rectilignes et chaque échangeur comporte une boîte collectrice à chacune des extrémités des tubes. Dans ce cas classique, chaque boîte collectrice de l'échangeur de chaleur principale comporte un peigne de maintien des ailettes.Finally, the exchangers of the heat exchange module may have only one manifold, for example if it is equipped with U-shaped tubes. However, in most cases, the tubes are straight and each exchanger has a manifold at each end of the tubes. In this classic case, each manifold of the main heat exchanger includes a fin retaining comb.
Avantageusement le peigne prend appui sur les boîtes collectrices de l'échangeur secondaire (ou des échangeurs secondaires, s'il y en a plusieurs). Ainsi, les boîtes collectrices des échangeurs secondaires constituent des butées qui arrêtent le déplacement du peigne et par suite retiennent la boîte collectrice de l'échangeur principal. Le peigne permet ainsi d'assurer la retenue de la boîte collectrice de l'échangeur principal par l'intermédiaire des boîtes de l'échangeur secondaire (ou des échangeurs secondaires, le cas échéant).Advantageously, the comb is supported on the manifolds of the secondary exchanger (or secondary exchangers, if there are several). Thus, the manifolds of the secondary exchangers constitute stops which stop the movement of the comb and consequently retain the manifold of the main exchanger. The comb thus makes it possible to ensure the retention of the manifold of the main exchanger via the boxes of the secondary exchanger (or secondary exchangers, if applicable).
Ainsi, il n'est pas nécessaire d'évaser les tubes pour retenir les boîtes collectrices de l'échangeur principal et les tubes peuvent être rectilignes sur toute leur longueur et présenter une section constante sur toute leur longueur. Il est de la sorte possible d'utiliser de nouveaux alliages et des états métallurgiques plus durs ayant une meilleure tenue à la corrosion.Thus, it is not necessary to flare the tubes to retain the manifolds of the main exchanger and the tubes can be straight on their entire length and have a constant section over their entire length. It is thus possible to use new alloys and harder metallurgical states with better resistance to corrosion.
On notera par ailleurs que cette caractéristique s'applique avantageusement à un module d'échange de chaleur comportant des ailettes communes à deux ou plus de deux échangeurs du module. Elle pourrait toutefois également s'appliquer à un module d'échange de chaleur dans lequel les ailettes ne sont pas communes aux différents échangeurs du module.It will also be noted that this characteristic advantageously applies to a heat exchange module comprising fins common to two or more of two exchangers of the module. It could however also apply to a heat exchange module in which the fins are not common to the different exchangers of the module.
Avantageusement, un joint d'étanchéité est disposé à l'extérieur du collecteur de la boîte collectrice. Ainsi, le joint est en appui sur la première ailette de l'échangeur principal, de telle sorte qu'il protège efficacement les tubes de ce dernier contre les risques de corrosion dans cette zone généralement critique sur les échangeurs assemblés mécaniquement, utilisant un joint en élastomère. Dans un échangeur de type classique, il ne serait pas possible de monter le joint à l'extérieur du collecteur parce que la partie tubulaire du joint d'étanchéité qui assure l'étanchéité du tube risquerait d'être entaillée par le collet formé dans le collecteur. Le joint monté à l'extérieur de la boîte collectrice ne présente pas cet inconvénient.Advantageously, a seal is placed outside the manifold of the manifold. Thus, the seal is supported on the first fin of the main exchanger, so that it effectively protects the tubes of the latter against the risks of corrosion in this generally critical area on mechanically assembled exchangers, using a seal in elastomer. In a conventional type exchanger, it would not be possible to mount the seal on the outside of the manifold because the tubular part of the seal which seals the tube would risk being cut by the collar formed in the manifold. The seal mounted on the outside of the manifold does not have this drawback.
Avantageusement le collecteur comporte un épaulement qui ménage un espace pour le joint d'étanchéité.Advantageously, the manifold has a shoulder which provides space for the seal.
Grâce à cette caractéristique le joint n'est pas comprimé entre les ailettes et la face extérieure du collecteur.Thanks to this characteristic, the seal is not compressed between the fins and the external face of the manifold.
Avantageusement le collecteur est réalisé en matière plastique.Advantageously, the collector is made of plastic.
Plusieurs conceptions de la boîte collectrice sont envisageables.Several designs of the manifold are possible.
Selon une réalisation préférée, la boîte collectrice présente une forme tubulaire de section fermée réalisée d'une seule pièce. La boîte collectrice est fermée à ses deux extrémités par des bouchons. Ces bouchons peuvent être, notamment, soudés par friction ou par toute autre technique appropriée.According to a preferred embodiment, the manifold has a tubular shape of closed section made in one piece. The manifold is closed at its two ends by plugs. These plugs can be, in particular, welded by friction or by any other suitable technique.
Selon une autre réalisation, la boîte collectrice comporte une ouverture latérale fermée par un couvercle. Le couvercle peut être soudé sur la boîte collectrice par toute technique appropriée, notamment par friction.According to another embodiment, the manifold comprises a lateral opening closed by a cover. The cover can be welded to the manifold by any suitable technique, in particular by friction.
Cette conception permet le démoulage de tubulures aplaties à la base avec un rayon de raccordement favorable à l'écoulement du fluide de l'échangeur et de surcroît une hauteur de boîte collectrice réduite.This design allows the demoulding of pipes flattened at the base with a connection radius favorable to the flow of the exchanger fluid and, in addition, a reduced header box height.
Enfin, la boîte collectrice comporte de préférence des formes aptes à recevoir et à fixer la buse d'un groupe moto-ventilateur.Finally, the manifold preferably comprises forms capable of receiving and fixing the nozzle of a motor-ventilator group.
D'autres caractéristiques et avantages de l'invention apparaîtront encore à la lecture de la description qui suit d'exemples de réalisation donnés à titre illustratif en référence aux figures annexées.Other characteristics and advantages of the invention will become apparent on reading the following description of embodiments given by way of illustration with reference to the appended figures.
Sur ces figures :In these figures:
- la figure 1 est une vue tri-dimensionnelle d'un module d'échange de chaleur de l'art antérieur constitué d'un radiateur de refroidissement et d'un échangeur secondaire, à savoir un condenseur de climatisation ;- Figure 1 is a three-dimensional view of a heat exchange module of the prior art consisting of a cooling radiator and a secondary exchanger, namely an air conditioning condenser;
- la figure 2 représente les ailettes communes du module d'échange de chaleur de la figure 1 ;- Figure 2 shows the common fins of the heat exchange module of Figure 1;
- la figure 3 est une vue éclatée en perspective d'une première réalisation de la boîte collectrice de l'échangeur principal d'un module d'échange de chaleur conforme à l'invention ;- Figure 3 is an exploded perspective view of a first embodiment of the manifold of the main exchanger of a heat exchange module according to the invention;
- la figure 4 est une vue de dessous de la boîte collectrice représentée sur la figure 3 ; - la figure 5 représente à échelle agrandie une paire de dents du peigne du module d'échange de chaleur représenté sur les figures 3 et 4 ;- Figure 4 is a bottom view of the manifold shown in Figure 3; - Figure 5 shows on an enlarged scale a pair of teeth of the comb of the heat exchange module shown in Figures 3 and 4;
- la figure 6 est une vue partielle en coupe à échelle agrandie de la boîte collectrice de l'échangeur principal et de l'échangeur secondaire du module d'échange de chaleur représenté sur les figures 3 et 4 ;- Figure 6 is a partial sectional view on an enlarged scale of the manifold of the main exchanger and the secondary exchanger of the heat exchange module shown in Figures 3 and 4;
- les figures 7 à 9 sont trois vues partielles en perspective qui illustrent différentes étapes du montage d'une deuxième réalisation d'un module d'échange de chaleur conforme à la présente invention ; et- Figures 7 to 9 are three partial perspective views which illustrate different stages of assembly of a second embodiment of a heat exchange module according to the present invention; and
- la figure 10 est une vue en coupe du module d'échange de chaleur de la figure 9, passant par l'axe de la tubulure.- Figure 10 is a sectional view of the heat exchange module of Figure 9, passing through the axis of the tube.
Le module d'échange de chaleur de l'art antérieur, représenté sur la figure 1 , est composé d'un radiateur 1 de refroidissement d'un moteur de véhicule automobile et d'un condenseur 2 de climatisation, ces deux échangeurs étant généralement plans. Le radiateur 1 et le condenseur 2 constituent respectivement un échangeur principal et un échangeur secondaire.The heat exchange module of the prior art, shown in FIG. 1, is composed of a radiator 1 for cooling a motor vehicle engine and a condenser 2 for air conditioning, these two exchangers being generally planar . The radiator 1 and the condenser 2 respectively constitute a main exchanger and a secondary exchanger.
Le radiateur 1 est constitué de façon connue d'un corps 3 réalisé à partir d'un faisceau de tubes verticaux de circulation de fluide et monté entre deux boîtes collectrices 4 et 5. Les boîtes collectrices sont disposées le long de deux côtés parallèles du corps et munies de tubulure d'entrée 6 et de sortie (non représentée) du fluide de refroidissement. Le condenseur 2 est également constitué d'un corps 7 réalisé à partir d'un faisceau de tubes verticaux 23 de circulation de fluide montés entre deux boîtes collectrices 8 et 9. Les boîtes collectrices 8 et 9 sont disposées le long de deux côtés parallèles du corps 7. Elles sont munies de deux tubulures d'entrée et de sortie 10 du fluide réfrigérant.The radiator 1 consists in a known manner of a body 3 produced from a bundle of vertical fluid circulation tubes and mounted between two manifolds 4 and 5. The manifolds are arranged along two parallel sides of the body and provided with inlet pipe 6 and outlet (not shown) of the cooling fluid. The condenser 2 also consists of a body 7 produced from a bundle of vertical tubes 23 for circulation of fluid mounted between two manifolds 8 and 9. The manifolds 8 and 9 are arranged along two parallel sides of the body 7. They are provided with two inlet and outlet pipes 10 for the refrigerant.
Le module d'échange de chaleur comporte des ailettes 11 communes au radiateur de refroidissement 1 et au condenseur 2. Ces ailettes 11 sont représentées plus en détail sur la figure 2. Elles sont montées de façon conventionnelle sur les tubes 22 du corps 3 de l'échangeur de chaleur 1. Elles présentent des prolongements 12 en saillie, perpendiculairement au plan des échangeurs, du côté de l'échangeur de chaleur secondaire 2. Les prolongements 12 comportent des découpes 13 ouvertes en direction de l'échangeur 2. Ces découpes ont une forme correspondant à la section transversale des tubes 23 du condenseur 2, qui sont ici des tubes plats, et à même pas que ces tubes, de manière à les recevoir. Les tubes 23 de l'échangeur secondaire 2 sont assemblés à force dans les découpes 13 des ailettes. Ceci assure un blocage par friction entre les parois des tubes 23 et les bords des découpes 13.The heat exchange module comprises fins 11 common to the cooling radiator 1 and to the condenser 2. These fins 11 are shown in more detail in FIG. 2. They are mounted so conventional on the tubes 22 of the body 3 of the heat exchanger 1. They have protruding extensions 12, perpendicular to the plane of the exchangers, on the side of the secondary heat exchanger 2. The extensions 12 include cutouts 13 open at direction of the exchanger 2. These cutouts have a shape corresponding to the cross section of the tubes 23 of the condenser 2, which are here flat tubes, and even not as these tubes, so as to receive them. The tubes 23 of the secondary exchanger 2 are forcibly assembled in the cutouts 13 of the fins. This ensures friction locking between the walls of the tubes 23 and the edges of the cutouts 13.
L'assemblage de l'échangeur 1 muni de ses ailettes 11 avec l'échangeur 2 dépourvu d'ailettes s'effectue de la manière suivante. L'échangeur 2 est simplement plaqué contre l'échangeur 1 en engageant à force les tubes 23 de l'échangeur 2 dans les découpes 13 des prolongements 12 des ailettes, ce qui assure le blocage de l'échangeur.The assembly of the exchanger 1 provided with its fins 11 with the exchanger 2 devoid of fins is carried out as follows. The exchanger 2 is simply pressed against the exchanger 1 by forcibly engaging the tubes 23 of the exchanger 2 in the cutouts 13 of the extensions 12 of the fins, which ensures the blocking of the exchanger.
La boîte collectrice 5 du radiateur principal 1 est constituée d'un collecteur ou plaque collectrice (non visible sur la figure 1) réalisé en métal et comportant des trous de réception des tubes 22 de l'échangeur 1. La boîte collectrice 5 comporte d'autre part un couvercle 14, généralement réalisé en matière plastique. L'assemblage du couvercle 14 sur le collecteur se fait généralement au moyen de pattes de sertissage repliées sur un rebord périphérique du couvercle 9. Le rebord périphérique qui entoure la boîte collectrice 9 et qui est destiné à recevoir les pattes qui permettent le sertissage du couvercle 9 sur le collecteur augmente l'encombrement du radiateur de refroidissement 1 et par suite l'encombrement global du module en imposant la présence d'un espace entre l'échangeur principal et l'échangeur secondaire.The manifold 5 of the main radiator 1 consists of a manifold or manifold plate (not visible in FIG. 1) made of metal and comprising holes for receiving the tubes 22 of the exchanger 1. The manifold 5 comprises on the other hand a cover 14, generally made of plastic. The assembly of the cover 14 on the collector is generally done by means of crimping lugs folded over a peripheral rim of the cover 9. The peripheral rim which surrounds the manifold 9 and which is intended to receive the lugs which allow the crimping of the cover 9 on the collector increases the size of the cooling radiator 1 and consequently the overall size of the module by imposing the presence of a space between the main exchanger and the secondary exchanger.
Par ailleurs, un joint d'étanchéité en caoutchouc ou en élastomère est disposé à l'intérieur de la boîte collectrice 5. Ce joint comporte des parties tubulaires qui s'engagent dans les trous de réception des tubes 22 de l'échangeur principal 1. Par ailleurs, comme on l'a déjà exposé, les ailettes 11 doivent être maintenues pendant l'introduction des tubes 23 du condenseur 2 par un outil approprié inséré entre la dernière ailette du faisceau et la face externe du collecteur. Cette opération conduit à laisser un jeu de plusieurs millimètres entre le collecteur et la première ailette. Il en résulte une diminution de la surface d'échange entre le flux d'air qui traverse l'échangeur et les ailettes.Furthermore, a rubber or elastomer seal is placed inside the manifold 5. This seal has tubular parts which engage in the holes for receiving the tubes 22 of the main exchanger 1. Furthermore, as already explained, the fins 11 must be maintained during the introduction of the tubes 23 of the condenser 2 by an appropriate tool inserted between the last fin of the bundle and the external face of the manifold. This operation leaves a clearance of several millimeters between the manifold and the first fin. This results in a decrease in the exchange surface between the air flow which passes through the exchanger and the fins.
De plus, les tubes 22 de l'échangeur principal restent à nu parce que la partie tubulaire du joint ne peut s'étendre sur toute la longueur pour des raisons de démoulage.In addition, the tubes 22 of the main exchanger remain bare because the tubular part of the joint cannot extend over the entire length for reasons of demolding.
On a représenté sur les figures 3, 4 et 6 diverses vues qui montrent une première réalisation de la boîte collectrice de l'échangeur principal 1 d'un module d'échange de chaleur conforme à l'invention. Sur les figures 3, 4 et 6, les parties identiques à celles du module d'échange de chaleur représenté sur la figure 1 ont été désignées par des références identiques.There are shown in Figures 3, 4 and 6 various views which show a first embodiment of the manifold of the main exchanger 1 of a heat exchange module according to the invention. In FIGS. 3, 4 and 6, the parts identical to those of the heat exchange module shown in FIG. 1 have been designated by identical references.
La boîte collectrice 5 de l'échangeur principal 1 comporte un peigne 28 qui, dans l'exemple de réalisation représenté, s'étend sur toute la longueur de la boîte collectrice 5. Toutefois, le peigne 28 pourrait ne s'étendre que sur une partie seulement de la longueur de la boîte collectrice. Dans l'exemple, le peigne 28 est réalisé d'une seule pièce avec la boîte collectrice 5, avantageusement par moulage d'une matière plastique. Toutefois, le peigne pourrait être réalisé séparément et rendu solidaire de la boîte collectrice. Le peigne 28 est constitué de dents 29 disposées par paire et qui délimitent entre elles une découpe 30 (voir la figure 5) dont la fonction est de maintenir les premières ailettes lors de l'assemblage des tubes 23. En d'autres termes, les découpes 30 sont destinées à recevoir les tubes 23 de l'échangeur secondaire 2 lorsque l'échangeur principal et l'échangeur secondaire sont assemblés (voir figure 6).The manifold 5 of the main exchanger 1 comprises a comb 28 which, in the embodiment shown, extends over the entire length of the manifold 5. However, the comb 28 could only extend over a only part of the length of the manifold. In the example, the comb 28 is made in one piece with the manifold 5, advantageously by molding a plastic material. However, the comb could be produced separately and made integral with the manifold. The comb 28 consists of teeth 29 arranged in pairs and which delimit between them a cutout 30 (see FIG. 5) whose function is to maintain the first fins during the assembly of the tubes 23. In other words, the cutouts 30 are intended to receive the tubes 23 of the secondary exchanger 2 when the main exchanger and the secondary exchanger are assembled (see Figure 6).
Comme on peut le constater, notamment sur la figure 6, le peigne 28 comporte une face 31 dirigée vers les ailettes 11 et sur laquelle ces dernières viennent en appui. Ainsi, le peigne 28 remplit la fonction qui, dans l'art antérieur, est tenue par un outil spécial auxiliaire introduit temporairement pendant le montage des tubes 23 du condenseur 2 entre les ailettes 11 et la boîte collectrice 5, et plus particulièrement entre les ailettes 11 et la face externe du collecteur. Etant donné que l'utilisation de cet outil n'est plus nécessaire, il n'est plus utile de laisser un jeu de plusieurs millimètres entre la première ailette et le collecteur de telle sorte que les tubes 22 peuvent comporter des ailettes sur toute leur longueur.As can be seen, in particular in FIG. 6, the comb 28 has a face 31 directed towards the fins 11 and on which the latter come to bear. Thus, the comb 28 fulfills the function which, in the prior art, is held by a special auxiliary tool temporarily introduced during assembly of the tubes 23 of the condenser 2 between the fins 11 and the manifold 5, and more particularly between the fins 11 and the external face of the manifold. Since the use of this tool is no longer necessary, it is no longer useful to leave a clearance of several millimeters between the first fin and the manifold so that the tubes 22 can have fins over their entire length .
En outre, comme on peut le voir en particulier sur la figure 6, le joint d'étanchéité 33 peut être disposé à l'extérieur de la boîte collectrice 5, sur la face du collecteur 35 dirigée vers le faisceau d'ailettes 11. Cette disposition est avantageuse parce que le joint 33 protège la partie du tube située entre la première ailette et la face externe du collecteur 35 contre la corrosion. Avantageusement, un épaulement 37 constitue une butée pour le jeu d'ailettes 11 de manière à éviter la compression du joint 33.In addition, as can be seen in particular in Figure 6, the seal 33 can be arranged outside of the manifold 5, on the face of the manifold 35 facing the fin bundle 11. This arrangement is advantageous because the seal 33 protects the part of the tube located between the first fin and the external face of the manifold 35 against corrosion. Advantageously, a shoulder 37 constitutes a stop for the set of fins 11 so as to avoid compression of the seal 33.
Par ailleurs, comme on peut le remarquer notamment sur la figure 6, le peigne 28 comporte une face 39 dirigée vers la boîte collectrice 8 de l'échangeur 2 qui prend appui sur cette boîte collectrice 8. Les dents 29 du peigne 28 reprennent ainsi les efforts d'arrachement de la boîte collectrice 5 sous l'effet de la pression du fluide caloporteur de refroidissement qui circule dans les tubes 22.Furthermore, as can be seen in particular in FIG. 6, the comb 28 has a face 39 directed towards the manifold 8 of the exchanger 2 which bears on this manifold 8. The teeth 29 of the comb 28 thus take up the stripping forces from the manifold 5 under the effect of the pressure of the coolant which circulates in the tubes 22.
Selon l'art antérieur, les tubes de l'échangeur principal 1 , tels que 22, comportent une partie évasée mécaniquement par l'introduction d'un poinçon d'évasement. Cet évasement a pour but d'empêcher l'arrachement des boîtes collectrices. Compte tenu du fait que ces efforts sont repris par les boîtes collectrices 8 et 9 de l'échangeur secondaire 2, l'évasement des tubes 22 ne se justifie plus. Par conséquent, ces tubes peuvent être rectilignes et présenter une section constante sur la totalité de leur longueur. Ils peuvent toutefois comporter un retreint ou chanfrein 41 à leur extrémité afin de favoriser leur introduction dans le joint 33 (figure 6). Le fait que les tubes ne sont pas évasés permet une plus grande liberté dans le choix de l'alliage dans lequel ces tubes sont réalisés. On peut ainsi utiliser de nouveaux alliages et des états métallurgiques plus durs qui confèrent une meilleure tenue du tube à la corrosion.According to the prior art, the tubes of the main exchanger 1, such as 22, have a part flared mechanically by the introduction of a flaring punch. The purpose of this flaring is to prevent tearing of the manifolds. Given the fact that these efforts are taken up by the manifolds 8 and 9 of the secondary exchanger 2, the flaring of the tubes 22 is no longer justified. Consequently, these tubes can be straight and have a constant section over their entire length. They may, however, include a constriction or chamfer 41 at their end in order to favor their introduction into the joint 33 (FIG. 6). The fact that the tubes are not flared allows greater freedom in the choice of the alloy in which these tubes are made. It is thus possible to use new alloys and harder metallurgical states which confer better resistance of the tube to corrosion.
Diverses conceptions de la boîte collectrice 5 peuvent être envisagées sans sortir du cadre de l'invention. Sur les figures 3, 4 et 6, la boîte collectrice est constituée par une forme tubulaire de section fermée. Elle est réalisée d'une seule pièce. En d'autres termes, le collecteur et le couvercle qui, selon l'art antérieur, sont réalisés en deux pièces de matériaux différents (collecteur en acier et couvercle en matière plastique), sont, dans cette réalisation, réalisés en une seule pièce moulée en matière plastique. La boîte collectrice est fermée à ses deux extrémités par des bouchons 43 (figures 3 et 4). Ces bouchons peuvent être soudés par friction sur la boîte collectrice.Various designs of the manifold 5 can be envisaged without departing from the scope of the invention. In Figures 3, 4 and 6, the manifold is constituted by a tubular shape of closed section. It is made in one piece. In other words, the collector and the cover which, according to the prior art, are produced in two parts of different materials (steel collector and plastic cover), are, in this embodiment, produced in a single molded part made of plastic. The manifold is closed at its two ends by plugs 43 (Figures 3 and 4). These plugs can be friction welded to the manifold.
Etant donné que la boîte collectrice est réalisée en matière plastique, elle peut comporter facilement des ergots de fixation tels que 45 qui permettent de la fixer sur le châssis du véhicule. Elle peut comporter également des formes 47 aptes à recevoir et à fixer la buse d'un groupe moto-ventilateur (non représentée).Since the manifold is made of plastic, it can easily include fixing lugs such as 45 which allow it to be fixed to the chassis of the vehicle. It may also include forms 47 able to receive and fix the nozzle of a motor-fan unit (not shown).
On a représenté sur les figures 7 à 10 une deuxième réalisation de la boîte collectrice d'un module conforme à l'invention. La boîte collectrice 5, également réalisée en matière plastique moulée, est constituée d'une boîte 51 comprenant les tubulures d'entrée et de sortie 6 du fluide. La boîte 51 comporte également les trous destinés à la réception des tubes 22 de l'échangeur principal 1. Le peigne 28 est également formé sur la boîte 31. Cette dernière est fermée latéralement par un couvercle 53, qui peut éventuellement être plan. Le couvercle 53 est fixé sur la boîte 51 par tous moyens appropriés, notamment par soudage par friction.There is shown in Figures 7 to 10 a second embodiment of the manifold of a module according to the invention. The manifold 5, also made of molded plastic, consists of a box 51 comprising the inlet and outlet pipes 6 of the fluid. The box 51 also includes the holes intended for the reception of the tubes 22 of the main exchanger 1. The comb 28 is also formed on the box 31. The latter is closed laterally by a cover 53, which may optionally be flat. The cover 53 is fixed to the box 51 by any suitable means, in particular by friction welding.
En variante de réalisation, le peigne 28 pourrait également être prévu sur le couvercle 53. Cette conception permet le démoulage de tubulures aplaties à la base avec un rayon de raccordement favorable à l'écoulement du liquide et de surcroît une hauteur de boîte collectrice réduite. In an alternative embodiment, the comb 28 could also be provided on the cover 53. This design allows the demoulding of tubes flattened at the base with a connection radius favorable to the flow of the liquid and in addition a reduced manifold height.

Claims

Revendicationsclaims
1 - Module d'échange de chaleur constitué d'un échangeur de chaleur principal (1) et d'au moins un échangeur de chaleur secondaire (2) ; l'échangeur de chaleur principal (1 ) et l'échangeur de chaleur secondaire (2) comportant un corps (3, 7) muni de tubes de circulation de fluide (22, 23) et au moins une boîte collectrice (5, 8) munie d'un collecteur (35) perforé de trous de réception des tubes (22) du corps (3), le module comportant des ailettes de refroidissement (11 ), caractérisé ce que la ou les boîtes collectrices (5) de l'échangeur principal comportent au moins une saillie (28) s'étendant en direction du ou desdits échangeurs secondaires pour coopérer avec la ou les boîtes collectrices (5,8) du ou desdits échangeurs secondaires et/ou avec lesdites. ailettes (11) de manière à structurer ledit module.1 - Heat exchange module consisting of a main heat exchanger (1) and at least one secondary heat exchanger (2); the main heat exchanger (1) and the secondary heat exchanger (2) comprising a body (3, 7) provided with fluid circulation tubes (22, 23) and at least one manifold (5, 8) provided with a manifold (35) perforated with holes for receiving the tubes (22) of the body (3), the module comprising cooling fins (11), characterized in that the manifold (s) (5) of the exchanger main comprise at least one projection (28) extending in the direction of said secondary exchanger (s) to cooperate with the manifold (s) (5,8) of said secondary exchanger (s) and / or with said. fins (11) so as to structure said module.
2 - Module d'échange selon la revendication 1 dans lequel les ailettes (11 ) sont communes à l'échangeur principal (1 ) et à au moins un échangeur secondaire (2), les ailettes (11 ) étant montées sur les tubes de l'échangeur principal et faisant saillie de ce dernier sensiblement perpendiculairement au plan de ce dernier, les parties (12) des ailettes (11 ) faisant saillie de l'échangeur principal (1 ) comportant des découpes (13) de réception des tubes (23) de l'échangeur secondaire (2).2 - exchange module according to claim 1 wherein the fins (11) are common to the main exchanger (1) and at least one secondary exchanger (2), the fins (11) being mounted on the tubes of the main exchanger and projecting from the latter substantially perpendicular to the plane of the latter, the parts (12) of the fins (11) projecting from the main exchanger (1) comprising cutouts (13) for receiving the tubes (23) of the secondary exchanger (2).
3 - Module d'échange de chaleur selon l'une des revendications 1 et 2, caractérisé en ce que la saillie (28) prend appui sur les boîtes collectrices (8, 9) de l'échangeur secondaire (2).3 - Heat exchange module according to one of claims 1 and 2, characterized in that the projection (28) is supported on the manifolds (8, 9) of the secondary exchanger (2).
4 - Module d'échange de chaleur selon l'une des revendications 1 à 3, caractérisé en ce que les tubes (22) l'échangeur principal (1 ) présentent une section constante sur toute leur longueur. 4 - Heat exchange module according to one of claims 1 to 3, characterized in that the tubes (22) the main exchanger (1) have a constant section over their entire length.
5 - Module d'échange de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que le joint d'étanchéité (33) est disposé à l'extérieur du collecteur (35) de la boîte collectrice (5).5 - Heat exchange module according to one of claims 1 to 4, characterized in that the seal (33) is arranged outside the manifold (35) of the manifold (5).
6 - Module d'échange de chaleur selon l'une des revendications 1 à 5, caractérisé en ce que le collecteur (35) comporte un épaulement (37) qui ménage un espace pour le joint d'étanchéité (33).6 - heat exchange module according to one of claims 1 to 5, characterized in that the manifold (35) has a shoulder (37) which provides a space for the seal (33).
7 - Module d'échange de chaleur dont l'une des revendications 1 à 6, caractérisé en ce que le collecteur (35) est en matière plastique.7 - Heat exchange module including one of claims 1 to 6, characterized in that the collector (35) is made of plastic.
8 - Module d'échange de chaleur selon l'une des revendications 1 à 7, caractérisé en ce que la boîte collectrice (5) présente une forme tubulaire de section fermée d'une seule pièce.8 - Heat exchange module according to one of claims 1 to 7, characterized in that the manifold (5) has a tubular shape of closed section in one piece.
9 - Module d'échange de chaleur selon la revendication 8, caractérisé en ce que la boîte collectrice (5) est fermée à ses deux extrémités par des bouchons (43).9 - heat exchange module according to claim 8, characterized in that the manifold (5) is closed at its two ends by plugs (43).
10 - Module d'échange de chaleur selon l'une des revendications 1 à 7, caractérisé en ce que la boîte collectrice (5) comporte une ouverture latérale fermée par un couvercle (53).10 - Heat exchange module according to one of claims 1 to 7, characterized in that the manifold (5) has a side opening closed by a cover (53).
11 - Module d'échange de chaleur selon la revendication 10, caractérisé en ce que le couvercle (53) est soudé par friction sur une boîte (51).11 - Heat exchange module according to claim 10, characterized in that the cover (53) is friction welded to a box (51).
12. Module d'échange de chaleur selon l'une des revendications 1 à 11 , caractérisé en ce que la boîte collectrice (5) comporte des formes (47) aptes à recevoir et à fixer la buse d'un groupe moto-ventilateur.12. Heat exchange module according to one of claims 1 to 11, characterized in that the manifold (5) has forms (47) adapted to receive and fix the nozzle of a motor-fan unit.
13. Module d'échange de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que la saillie (28) est réalisée d'une seule pièce avec la ou les boîtes collectrices (5) et/ou le ou les collecteur (35) de l'échangeur principal (2). 13. Heat exchange module according to any one of the preceding claims, characterized in that the projection (28) is made in one piece with the manifold or boxes (5) and / or the collector (s) ( 35) of the main exchanger (2).
14. Module d'échange de chaleur selon l'une quelconque des revendications précédentes dans lequel la saillie (28) est constituée d'un peigne comportant des découpes (30) de réception des tubes (23) de l'échangeur secondaire, ce peigne (28) étant apte à maintenir serrées les parties (12) des ailettes (11 ) faisant saillie du corps (3) de l'échangeur principal. 14. heat exchange module according to any one of the preceding claims wherein the projection (28) consists of a comb comprising cutouts (30) for receiving the tubes (23) of the secondary exchanger, this comb (28) being able to keep tight the parts (12) of the fins (11) projecting from the body (3) of the main exchanger.
EP03795048.2A 2002-09-12 2003-09-12 Heat exchanger module which is intended, in particular, for motor vehicles Expired - Lifetime EP1558885B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0211325 2002-09-12
FR0211325A FR2844586B1 (en) 2002-09-12 2002-09-12 HEAT EXCHANGE MODULE, IN PARTICULAR FOR MOTOR VEHICLES, COMPRISING MEANS FOR MAINTAINING THE FINS
PCT/FR2003/002710 WO2004025204A2 (en) 2002-09-12 2003-09-12 Heat exchanger module which is intended, in particular, for motor vehicles

Publications (2)

Publication Number Publication Date
EP1558885A2 true EP1558885A2 (en) 2005-08-03
EP1558885B1 EP1558885B1 (en) 2016-02-24

Family

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Application Number Title Priority Date Filing Date
EP03795048.2A Expired - Lifetime EP1558885B1 (en) 2002-09-12 2003-09-12 Heat exchanger module which is intended, in particular, for motor vehicles

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EP (1) EP1558885B1 (en)
AU (1) AU2003276339A1 (en)
FR (1) FR2844586B1 (en)
WO (1) WO2004025204A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2868522B1 (en) * 2004-03-30 2007-06-01 Valeo Thermique Moteur Sas HEAT EXCHANGE MODULE, ESPECIALLY FOR MOTOR VEHICLES
FR2876783B1 (en) * 2004-10-15 2006-12-22 Valeo Thermique Moteur Sas HEAT EXCHANGER FOR COOLING A HIGH-PRESSURE GASEOUS REFRIGERANT FLUID, HEAT EXCHANGE MODULE COMPRISING THE EXCHANGER AND METHOD FOR PRODUCING THE SAME
DE102011102635B4 (en) 2011-05-27 2014-02-13 Spiegelberg GmbH & Co. KG Process for the preparation of an antimicrobial plastic product using a reductone

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1521637A (en) * 1967-03-10 1968-04-19 Chausson Usines Sa heat exchanger for heating and cooling a vehicle
FR2804500B1 (en) * 2000-01-28 2002-04-12 Valeo Thermique Moteur Sa HEAT EXCHANGE MODULE, IN PARTICULAR FOR A MOTOR VEHICLE
FR2804501B1 (en) * 2000-01-28 2002-04-12 Valeo Thermique Moteur Sa HEAT EXCHANGE MODULE, IN PARTICULAR FOR A MOTOR VEHICLE
FR2805605B1 (en) * 2000-02-28 2002-05-31 Valeo Thermique Moteur Sa HEAT EXCHANGE MODULE, PARTICULARLY FOR A MOTOR VEHICLE
FR2809486B1 (en) * 2000-05-29 2002-08-23 Valeo Thermique Moteur Sa HEAT EXCHANGE MODULE, PARTICULARLY FOR A MOTOR VEHICLE
FR2812081B1 (en) * 2000-07-18 2003-01-24 Valeo Thermique Moteur Sa HEAT EXCHANGE MODULE, IN PARTICULAR FOR A MOTOR VEHICLE, AND METHOD FOR MANUFACTURING THE MODULE
FR2812383B1 (en) * 2000-07-28 2003-02-07 Valeo Thermique Moteur Sa DEVICE FOR ASSEMBLING AT LEAST ONE EQUIPMENT ON A HEAT EXCHANGER

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004025204A2 *

Also Published As

Publication number Publication date
FR2844586B1 (en) 2005-06-24
AU2003276339A1 (en) 2004-04-30
EP1558885B1 (en) 2016-02-24
WO2004025204A3 (en) 2004-05-06
WO2004025204A2 (en) 2004-03-25
AU2003276339A8 (en) 2004-04-30
FR2844586A1 (en) 2004-03-19

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