EP3519755A1 - Fluid collecting box for a heat exchanger, associated heat exchanger - Google Patents

Fluid collecting box for a heat exchanger, associated heat exchanger

Info

Publication number
EP3519755A1
EP3519755A1 EP17787220.7A EP17787220A EP3519755A1 EP 3519755 A1 EP3519755 A1 EP 3519755A1 EP 17787220 A EP17787220 A EP 17787220A EP 3519755 A1 EP3519755 A1 EP 3519755A1
Authority
EP
European Patent Office
Prior art keywords
opening
receptacle
box
cover
openings
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
EP17787220.7A
Other languages
German (de)
French (fr)
Other versions
EP3519755B1 (en
Inventor
Jean-Baptiste CUILLIER
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 Systemes Thermiques SAS
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 Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP3519755A1 publication Critical patent/EP3519755A1/en
Application granted granted Critical
Publication of EP3519755B1 publication Critical patent/EP3519755B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box
    • 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
    • F28D1/053—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 the conduits being straight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • Fluid collector box for heat exchanger, associated heat exchanger.
  • the present application relates to a fluid manifold for a heat exchanger, and a heat exchanger equipped with such a device, and more particularly in applications to devices for heating, ventilation and / or air conditioning.
  • Some of these heat exchangers comprise a plurality of tubes allowing a thermal energy exchange between a fluid flowing inside the tubes and a fluid flowing between the tubes.
  • the tubes are connected to manifolds whose function is respectively to distribute or collect the fluid at the ends of the tubes, depending on whether the box is upstream or downstream of the heat exchanger.
  • Each manifold is fluidly connected to a heat loop through one or more openings.
  • the manifold can fluidly connect all the tubes by limiting the number of connections at the loop, which in particular limits the risk of leaks.
  • the tubes are arranged so as to be parallel to each other, to promote heat exchange with their environment while optimizing their size. This implies that the openings in the bottom of the header, intended to communicate fluidly with the tubes, are also aligned. This has the disadvantage of requiring the fluid to spread all along the box to ensure the supply of all tubes. This divergent flow of the liquid in the upstream collector box imposes turbulent flow on the fluid, causing a loss of charge as it passes through the collector box. It is understood that the same phenomenon of pressure drop occurs when the fluid passes through the manifold downstream, due to its flow converging towards the opening connected to the thermal loop of the heating, ventilation and / or air conditioning.
  • the present invention aims to overcome these disadvantages by providing a fluid collection box for a heat exchanger limiting the phenomenon of loss of charge of a fluid passing through the box.
  • the present invention proposes a fluid collection box for a heat exchanger, in particular in a heating, air conditioning and / or ventilation device for a motor vehicle, comprising a receptacle delimited by at least one side wall and one wall. bottom comprising a plurality of first openings substantially aligned in a direction of extension of the box.
  • a box according to the invention comprises a bottom and at least one side wall, preferably substantially normal to said bottom, so as to collect at said bottom, a coolant or heat transfer fluid according to the needs of the heat exchanger, said fluid being adapted to pass through the bottom wall through the first openings.
  • the receptacle In order to temporarily store the fluid in the box, the receptacle is closed by a lid having at least a second opening, for receiving a supply conduit adapted to be connected to the box to communicate fluidly with the receptacle and further downstream the heat exchanger.
  • the invention is characterized in that at least a second opening of the lid has an elongated shape substantially in the direction of elongation, and in that this second opening is arranged vis-à-vis several first openings.
  • the inlet surface of the fluid is extended in the receptacle and the distribution of this fluid is spread out, so that a substantially linear flow of this fluid is allowed through the collecting box, between a second opening and several first openings, and that thus limiting the fluid loss phenomenon described above.
  • elongated shape means an opening comprising at least two dimensions of different values, the largest dimension of which defines the direction of this elongated shape.
  • the largest dimension of this second opening is greater than the sum of the dimension of a first opening in the direction of elongation and the distance separating two first successive openings; thus, the second opening is at least partially vis-a-vis two first openings regardless of its position along the elongation direction, and the fluid can flow linearly between the second opening and these at minus two first openings;
  • the second opening is disposed facing at least three first openings
  • the second opening is characterized by a ratio between its largest and its smallest dimension, at least greater than 1.5; it is understood that the dimensions of the second opening can be adapted according to the size and the number of first openings that one wishes to be vis-à-vis the second opening.
  • vis-à-vis means a second opening revealing several first openings when we observe the inside of the manifold above the lid, this arrangement vis-à-vis allowing a linear or substantially linear flow of a fluid between said openings,
  • the second opening advantageously has an oblong shape or a rectangular shape, and it can similarly be provided that the first openings also have an elongate, oblong or rectangular shape, provided that the second opening has a dimension in the direction of elongation sufficiently large to cover a plurality of first openings.
  • the manifold may include a barrel arranged on the outer face of the lid so as to surround the second opening, to facilitate the adjustment of a conduit on the second opening.
  • the barrel makes it easier to mount a fluid supply duct on the lid by acting as a guide.
  • This drum could in this context have a height between 0.8mm and 1.2mm.
  • the term "height" means a dimension of the barrel along an axis normal or substantially normal to the outer face of the lid.
  • the free end of at least one side wall and the lid are deformed cold to achieve the fixing of the lid on the receptacle, and it can be provided that the cover is crimped on the receptacle by one or more ends of one or more side walls of the receptacle.
  • the present invention also relates to a duct connected to a collector box described above, comprising an orifice of similar shape to a second opening of the lid, that is to say an elongate shape, in particular oblong or rectangular.
  • This duct may comprise a flange surrounding the wall delimiting the orifice of the duct, continuously or discontinuously, the flange being arranged to allow the duct to be mounted on the box, in particular by crimping the flange with at least one side wall of the duct. box, simultaneously with the lid, and this so that the duct fluidly communicates with the inside of the manifold via the second opening.
  • the collar is held on the lid by one or more free ends of a side wall of the receptacle.
  • the flange is held on the cover by the free ends of two side walls vis-à-vis.
  • the duct and the flange may have a wall thickness greater than the thickness of the duct wall in the vicinity of the end that extends substantially perpendicularly, so as to ensure better maintenance duct by the collar.
  • the present application also relates to a heating, ventilation and / or air conditioning device comprising at least one heat exchanger supplied with fluid by a supply duct described above and connected to a collector box described above.
  • the first openings may be connected to tubes forming a bundle of a heat exchanger, and at least a second opening to this supply duct of the heat exchanger.
  • this heating, ventilation and / or air conditioning device provision may be made for the deformed side walls of the receptacle for fixing the lid with respect to the collecting box also for fixing the duct, via its flange with respect to this same collector box.
  • the features, variants and different embodiments of the invention may be associated with each other, in various combinations, to the extent that they are not incompatible or exclusive of each other.
  • Figure 1 is a vertical sectional view of an embodiment of a header box according to the invention.
  • Figure 2 is a schematic top view of the manifold illustrated in Figure 1;
  • Figure 3 is a sectional view along the sectional plane III-III shown in Figure 1;
  • FIG. 4 is a perspective view of an embodiment of the supply duct adapted to cooperate with the collector box and visible in FIGS. 1 and 2.
  • a manifold 1 comprises at least one receptacle 2 delimited by a bottom wall 4 and two side walls 6 extending substantially perpendicularly to two opposite edges of this bottom wall, so as to form a substantially U-shaped cavity.
  • a lid 8 arranged to be disposed substantially parallel to the bottom wall and which will be described in more detail below, and two end walls 10 which extend transversely to the bottom and side walls.
  • the collector box is connected, within a thermal loop, in a heating, ventilation and / or air conditioning device, via connection pipes made integral with connection elements carried by this box, and in particular via a conduit of supply 12 of a first fluid as shown in Figure 4 and which will be detailed in more detail below.
  • a first fluid is fed through the supply conduit 12 upstream of the box collector, to be poured into the receptacle 2 which forms a distribution chamber of this fluid.
  • the fluid is then distributed between different exchange tubes 14 allowing, in a heat exchange chamber not shown, to facilitate heat exchange with a second fluid flowing along these exchange tubes.
  • the receptacle is made from fluid-tight materials it must accommodate.
  • the thicknesses of the bottom and side walls are chosen so as to withstand the pressure of the fluid present in the box.
  • the manifold 1 may comprise a plurality of receptacles 2 aligned in the extension direction of the box, corresponding to the axis A-A visible in FIGS. 2 and 3, each receptacle 2 being closed transversely by end walls. 16, which may take the form of a transverse closure wall of the box for the receptacles arranged at the ends of this box, or the shape of a transverse partition wall (as visible in Figure 1) between two consecutive receptacles .
  • the lid 8 closes the receptacle 2 at the free ends of the side walls 6, that is to say the ends opposite to the bottom wall 4.
  • the cover can be made from the same materials as the side walls and the bottom wall of the box, such as for example from metal or a compound based on polymers.
  • the cover 8 is fixed on the side walls 6 by a known technique of assembling sheets by cold deformation, namely here by crimping the side walls with the lid. In order to facilitate these operations, the cover may rest on tabs 18 arranged projecting from the side walls towards the inside of the receptacle. According to the invention, it should be noted that the cold deformation operation for securing the cover 8 to the side walls 6 further allows the attachment of the supply conduit 12 of the first fluid to the manifold 1, as this will be detailed below.
  • the manifold has a plurality of openings to allow the attachment of tubes for the circulation of fluid through the receptacle or receptacles 2. These openings consist, on the one hand, of the first openings 20 through the bottom wall 4 of the receptacle 2 to allow a fluid to exit the manifold and a second opening 22 made in the lid to allow the passage of a fluid from the outside to the inside of the box, the second opening 22 having the invention a specific shape, here oblong, to be vis-à-vis a plurality of first openings 20, which are here circular.
  • the elongate shape of the second opening will be characterized by a ratio, between its largest and its smallest dimension, of at least greater than 1.5.
  • a ratio between its largest and its smallest dimension, of at least greater than 1.5.
  • the first and second openings are aligned along the same axis A-A visible in Figure 3 and the second oblong opening 22 is arranged so that its largest dimension, or length, coincides with the axis A-A. Furthermore, the width of the second opening 22 is equal to or greater than the diameter of the first openings 20, or the diameter of the largest of the first openings if they have different dimensions, so that all of the plurality of first openings 20 vis-à-vis the second opening 22 is directly accessible from this second opening 22.
  • the dimensions of the second opening 22 depend on the dimensions of the first openings 20 and their spacing.
  • the first openings 20 have a diameter of 5 mm and are spaced apart along the axis AA by 3 mm, while the length and the width of the second opening 22 are respectively equal to or greater than at 25mm and 10mm.
  • the first fluid entering the distribution chamber that forms the header can be removed via the first openings 20 with a predominantly linear flow, that is to say with a minimum of disturbance of the flow (the indirect flow being represented by the two arrows Fi curved at the ends of the direct flow Fi visible in Figure 1).
  • this characteristic can be obtained with a plurality of shapes, such as oblong, rectangular shapes, since the dimension in the direction of elongation of the box allows the recovery of several first openings by the second opening.
  • the cover 8 has on its upper face, facing away from the receptacle, a shank 24 positioned around the second opening 22. It is thus clear that the shank also has a shape elongated in the direction of elongation A-A of the collector box, and here an oblong shape, as is particularly visible in Figure 3.
  • this duct has, always at this proximal end 26, a flange 28, extending substantially perpendicularly to the wall of the duct at this proximal end, and surrounding the opening of the duct.
  • This flange here continuous, but which could be discontinuous without departing from the context of the invention, is arranged to allow the crimping of the conduit on the lid during the operation of crimping the lid on the manifold.
  • the conduit fluidly communicates with the distribution chamber via the second opening 22 of the manifold.
  • FIG. 3 shows diagrammatically the covering of the flange 28 by two folded edges 30, so as to trap it between the upper face of the lid and the folded edges 30 of the side walls 6 of the box.
  • This operation of deformation of cold material to boquer in position the collar 28 and thus the supply conduit 12 relative to the manifold 1 is made when the conduit 12 is perfectly in place next to the second opening 22.
  • the barrel 24 aligns the opening formed at the proximal end 26 of the conduit 12 with the second opening 22, by fitting, or at least by guiding the conduit around the barrel. It can be provided that the thickness of the collar 28 is greater than the thickness of the conduit, at least in the proximal end zone that the collar extends substantially perpendicularly. It is understood that this ensures a better maintenance of the conduit on the manifold via the thickness of the collar, without the entire duct is oversized, which avoids additional cost and overweight.
  • the invention makes it possible to achieve the objectives it has set itself and in particular to propose a collection box in a ventilation, heating and / or air conditioning device which is particularly easy to assemble and which makes it possible to a distribution of the fluid through the manifold minimizing pressure losses.
  • the second opening made on the cover of the collector to cooperate with a feed pipe and facilitate the passage of fluid through a distribution chamber of the collector box towards a plurality of tubes, or specific dimensions to be vis-à-vis a plurality of these tubes, to increase the flow linearity of the fluid and reduce the pressure losses that would result from a linear flow.

Landscapes

  • 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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Duct Arrangements (AREA)

Abstract

A fluid collecting box (1) for a heat exchanger comprises a receptacle (2) delimited by at least one side wall (6) and a bottom wall (4) comprising a plurality of first openings (20) substantially aligned in an elongation direction of the box (A-A), the receptacle being closed by a cover (8) having at least one second opening (22) for receiving a feed pipe. According to the invention, the second opening (22) has an elongate shape having a larger dimension in the elongation direction of the box (A-A). The invention also relates to a feed pipe having a shape appropriate for cooperating with the collecting box at the elongate-shaped second opening, as well as a heating, ventilation and/or air-conditioning device comprising both the feed pipe and the collecting box.

Description

Boîte collectrice de fluide pour échangeur de chaleur, échangeur de chaleur associé.  Fluid collector box for heat exchanger, associated heat exchanger.
La présente demande concerne une boîte collectrice de fluide pour un échangeur de chaleur, ainsi qu'un échangeur de chaleur équipé d'un tel dispositif, et plus particulièrement dans des applications à des dispositifs de chauffage, de ventilation et/ou de climatisation.  The present application relates to a fluid manifold for a heat exchanger, and a heat exchanger equipped with such a device, and more particularly in applications to devices for heating, ventilation and / or air conditioning.
Plusieurs types d'échangeurs de chaleur existent, leurs rôles étant systématiquement de mettre à proximité un premier fluide et un deuxième fluide à différentes pressions et températures, que ce soit à des fins de réaliser un réchauffement de l'air amené à être soufflé dans l'habitacle, ou bien par exemple un refroidissement d'un fluide moteur. Several types of heat exchangers exist, their roles being systematically to put in proximity a first fluid and a second fluid at different pressures and temperatures, whether for purposes of achieving a warming of the air to be blown into the air. cockpit, or for example a cooling of a driving fluid.
Certains de ces échangeurs de chaleur comprennent une pluralité de tubes permettant un échange d'énergie thermique entre un fluide s'écoulant à l'intérieur des tubes et un fluide s'écoulant entre les tubes. Les tubes sont connectés à des boîtes collectrices dont la fonction est respectivement de distribuer ou de recueillir le fluide aux extrémités des tubes, selon que la boîte soit en amont ou en aval de l'échangeur de chaleur. Some of these heat exchangers comprise a plurality of tubes allowing a thermal energy exchange between a fluid flowing inside the tubes and a fluid flowing between the tubes. The tubes are connected to manifolds whose function is respectively to distribute or collect the fluid at the ends of the tubes, depending on whether the box is upstream or downstream of the heat exchanger.
Chaque boîte collectrice est connectée fluidiquement à une boucle de thermique par l'intermédiaire d'une ou plusieurs ouvertures. Ainsi, de façon avantageuse, la boîte collectrice permet de connecter fluidiquement tous les tubes en limitant le nombre de connexion au niveau de la boucle, ce qui permet notamment de limiter le risque de fuites. Each manifold is fluidly connected to a heat loop through one or more openings. Thus, advantageously, the manifold can fluidly connect all the tubes by limiting the number of connections at the loop, which in particular limits the risk of leaks.
Les tubes sont agencés de sorte à être parallèles entre eux, afin de favoriser les échanges thermiques avec leur environnement tout en optimisant leur encombrement. Cela implique que les ouvertures présentes dans le fond de la boîte collectrice, vouées à communiquer fluidiquement avec les tubes, soient également alignées. Cela a pour inconvénient d'imposer au fluide de se diffuser tout le long de la boîte pour assurer l'alimentation de tous les tubes. Cet écoulement divergent du liquide dans la boîte collectrice amont impose au fluide un écoulement turbulent, entraînant une perte de charges lors de son passage dans la boîte collectrice. On comprend que le même phénomène de perte de charge se produit lorsque le fluide traverse la boîte collectrice avale, en raison de son écoulement convergent vers l'ouverture reliée à la boucle thermique du dispositif de chauffage, de ventilation et/ou de climatisation. The tubes are arranged so as to be parallel to each other, to promote heat exchange with their environment while optimizing their size. This implies that the openings in the bottom of the header, intended to communicate fluidly with the tubes, are also aligned. This has the disadvantage of requiring the fluid to spread all along the box to ensure the supply of all tubes. This divergent flow of the liquid in the upstream collector box imposes turbulent flow on the fluid, causing a loss of charge as it passes through the collector box. It is understood that the same phenomenon of pressure drop occurs when the fluid passes through the manifold downstream, due to its flow converging towards the opening connected to the thermal loop of the heating, ventilation and / or air conditioning.
La présente invention vise à remédier à ces inconvénients, en proposant une boîte collectrice de fluide pour un échangeur thermique limitant le phénomène de perte de charges d'un fluide traversant la boîte. The present invention aims to overcome these disadvantages by providing a fluid collection box for a heat exchanger limiting the phenomenon of loss of charge of a fluid passing through the box.
Dans ce contexte, la présente invention propose une boîte collectrice de fluide pour un échangeur de chaleur, notamment dans un dispositif de chauffage, de climatisation et/ou de ventilation de véhicule automobile, comprenant un réceptacle délimité par au moins une paroi latérale et une paroi de fond comportant plusieurs premières ouvertures sensiblement alignées selon une direction d'allongement de la boite. Autrement dit, une boîte selon l'invention comprend un fond et au moins une paroi latérale, de préférence sensiblement normale audit fond, de manière à recueillir au niveau dudit fond, un fluide réfrigérant ou caloporteur selon les besoins de l'échangeur thermique, ledit fluide étant apte à traverser la paroi de fond par l'intermédiaire des premières ouvertures. In this context, the present invention proposes a fluid collection box for a heat exchanger, in particular in a heating, air conditioning and / or ventilation device for a motor vehicle, comprising a receptacle delimited by at least one side wall and one wall. bottom comprising a plurality of first openings substantially aligned in a direction of extension of the box. In other words, a box according to the invention comprises a bottom and at least one side wall, preferably substantially normal to said bottom, so as to collect at said bottom, a coolant or heat transfer fluid according to the needs of the heat exchanger, said fluid being adapted to pass through the bottom wall through the first openings.
Afin de stocker de façon provisoire le fluide dans la boîte, le réceptacle est fermé par un couvercle comportant au moins une deuxième ouverture, pour la réception d'un conduit d'alimentation apte à être connecté à la boîte pour communiquer fluidiquement avec le réceptacle et plus en aval l'échangeur thermique. In order to temporarily store the fluid in the box, the receptacle is closed by a lid having at least a second opening, for receiving a supply conduit adapted to be connected to the box to communicate fluidly with the receptacle and further downstream the heat exchanger.
L'invention se caractérise en ce qu'au moins une deuxième ouverture du couvercle a une forme allongée sensiblement selon la direction d'allongement, et en ce que cette deuxième ouverture est agencée en vis-à-vis de plusieurs premières ouvertures. Ainsi, on étend la surface d'entrée du fluide dans le réceptacle et on étale la distribution de ce fluide, de sorte que l'on permet un écoulement sensiblement linéaire de ce fluide à travers la boite collectrice, entre une deuxième ouverture et plusieurs premières ouvertures, et que l'on limite ainsi au niveau du fluide le phénomène de perte de charges décrit ci-dessus. The invention is characterized in that at least a second opening of the lid has an elongated shape substantially in the direction of elongation, and in that this second opening is arranged vis-à-vis several first openings. Thus, the inlet surface of the fluid is extended in the receptacle and the distribution of this fluid is spread out, so that a substantially linear flow of this fluid is allowed through the collecting box, between a second opening and several first openings, and that thus limiting the fluid loss phenomenon described above.
Par les termes « forme allongée », on entend une ouverture comprenant au moins deux dimensions de valeurs différentes, dont la plus grande dimension définit la direction de cette forme allongée. The term "elongated shape" means an opening comprising at least two dimensions of different values, the largest dimension of which defines the direction of this elongated shape.
Selon plusieurs caractéristiques, prises seules ou en combinaison, relatives aux dimensions et à la forme de cette deuxième ouverture, on pourra prévoir que : - la plus grande dimension de cette deuxième ouverture est supérieure à la somme de la dimension d'une première ouverture selon la direction d'allongement et de la distance séparant deux premières ouvertures successives ; ainsi, la deuxième ouverture est au moins partiellement en vis-à-vis de deux premières ouvertures quelle que soit sa position le long de la direction d'allongement, et le fluide peut s'écouler de façon linéaire entre cette deuxième ouverture et ces au moins deux premières ouvertures ; According to several features, taken alone or in combination, relating to the dimensions and the shape of this second opening, provision may be made for: the largest dimension of this second opening is greater than the sum of the dimension of a first opening in the direction of elongation and the distance separating two first successive openings; thus, the second opening is at least partially vis-a-vis two first openings regardless of its position along the elongation direction, and the fluid can flow linearly between the second opening and these at minus two first openings;
- la deuxième ouverture est disposée en vis-à-vis d'au moins trois premières ouvertures ; the second opening is disposed facing at least three first openings;
- la deuxième ouverture se caractérise par un rapport entre sa plus grande et sa plus petite dimension, au moins supérieur à 1,5 ; on comprend que les dimensions de la deuxième ouverture peuvent être adaptées en fonction des dimensions et du nombre de premières ouvertures que l'on souhaite être en vis-à-vis de la deuxième ouverture. Par les termes « en vis-à-vis », on entend une deuxième ouverture laissant apparaître plusieurs premières ouvertures lorsque l'on observe l'intérieur de la boite collectrice au- dessus du couvercle, cet agencement en vis-à-vis permettant un écoulement linéaire ou sensiblement linéaire d'un fluide entre lesdites ouvertures, the second opening is characterized by a ratio between its largest and its smallest dimension, at least greater than 1.5; it is understood that the dimensions of the second opening can be adapted according to the size and the number of first openings that one wishes to be vis-à-vis the second opening. By the terms "vis-à-vis" means a second opening revealing several first openings when we observe the inside of the manifold above the lid, this arrangement vis-à-vis allowing a linear or substantially linear flow of a fluid between said openings,
- la deuxième ouverture présente avantageusement une forme oblongue ou une forme rectangulaire, et l'on peut prévoir de façon similaire que les premières ouvertures aient également une forme allongée, oblongue ou rectangulaire, dès lors que la deuxième ouverture présente une dimension selon la direction d'allongement suffisamment grande pour couvrir une pluralité de premières ouvertures. the second opening advantageously has an oblong shape or a rectangular shape, and it can similarly be provided that the first openings also have an elongate, oblong or rectangular shape, provided that the second opening has a dimension in the direction of elongation sufficiently large to cover a plurality of first openings.
Selon d'autres caractéristiques de l'invention, la boîte collectrice peut comporter un fût agencé sur la face extérieure du couvercle de sorte à entourer la deuxième ouverture, afin de faciliter l'ajustement d'un conduit sur cette deuxième ouverture. En d'autres termes, le fût permet de faciliter le montage d'un conduit d'alimentation de fluide sur le couvercle en jouant le rôle de guide. Ce fût pourra dans ce contexte présenter une hauteur comprise entre 0,8mm et 1,2mm. Par le terme « hauteur », on entend une dimension du fût selon un axe normal ou sensiblement normal à la face externe du couvercle. According to other features of the invention, the manifold may include a barrel arranged on the outer face of the lid so as to surround the second opening, to facilitate the adjustment of a conduit on the second opening. In other words, the barrel makes it easier to mount a fluid supply duct on the lid by acting as a guide. This drum could in this context have a height between 0.8mm and 1.2mm. The term "height" means a dimension of the barrel along an axis normal or substantially normal to the outer face of the lid.
Selon une autre série de caractéristiques, on pourra prévoir que l'extrémité libre d'au moins une paroi latérale et le couvercle sont déformés à froid pour réaliser la fixation du couvercle sur le réceptacle, et on pourra prévoir que le couvercle est serti sur le réceptacle par une ou plusieurs extrémités d'une ou de plusieurs parois latérales du réceptacle. According to another series of features, it can be provided that the free end of at least one side wall and the lid are deformed cold to achieve the fixing of the lid on the receptacle, and it can be provided that the cover is crimped on the receptacle by one or more ends of one or more side walls of the receptacle.
La présente invention porte également sur un conduit connecté à une boîte collectrice décrite ci-dessus, comprenant un orifice de forme semblable à une deuxième ouverture du couvercle, c'est-à-dire une forme allongée, notamment oblongue ou rectangulaire. The present invention also relates to a duct connected to a collector box described above, comprising an orifice of similar shape to a second opening of the lid, that is to say an elongate shape, in particular oblong or rectangular.
Ce conduit peut comporter une collerette entourant la paroi délimitant l'orifice du conduit, de façon continue ou discontinue, la collerette étant agencée pour permettre le montage du conduit sur la boite, notamment par sertissage de la collerette avec au moins une paroi latérale de la boite, simultanément avec le couvercle, et ceci afin que le conduit communique fluidiquement avec l'intérieur de la boîte collectrice via la deuxième ouverture. This duct may comprise a flange surrounding the wall delimiting the orifice of the duct, continuously or discontinuously, the flange being arranged to allow the duct to be mounted on the box, in particular by crimping the flange with at least one side wall of the duct. box, simultaneously with the lid, and this so that the duct fluidly communicates with the inside of the manifold via the second opening.
On peut ainsi prévoir qu'au moins une partie de la collerette est maintenue sur le couvercle par une ou plusieurs extrémités libres d'une paroi latérale du réceptacle. De préférence, afin d'assurer un meilleur maintien, la collerette est maintenue sur le couvercle par les extrémités libres de deux parois latérales en vis-à-vis. It can thus be provided that at least a portion of the collar is held on the lid by one or more free ends of a side wall of the receptacle. Preferably, to ensure better maintenance, the flange is held on the cover by the free ends of two side walls vis-à-vis.
Selon une caractéristique propre au conduit et à la collerette, celle-ci peut présenter une épaisseur de paroi supérieure à l'épaisseur de la paroi du conduit au voisinage de l'extrémité qu'elle prolonge sensiblement perpendiculairement, de manière à assurer un meilleur maintien du conduit par la collerette. According to a characteristic characteristic of the duct and the flange, it may have a wall thickness greater than the thickness of the duct wall in the vicinity of the end that extends substantially perpendicularly, so as to ensure better maintenance duct by the collar.
La présente demande concerne également un dispositif de chauffage, de ventilation et/ou de climatisation comprenant au moins un échangeur thermique alimenté en fluide par un conduit d'alimentation décrit ci-dessus et connecté à une boîte de collectrice décrite ci-dessus. A titre d'exemple, les premières ouvertures peuvent être connectées à des tubes formant faisceau d'un échangeur thermique, et au moins une deuxième ouverture à ce conduit d'alimentation de l'échangeur thermique. The present application also relates to a heating, ventilation and / or air conditioning device comprising at least one heat exchanger supplied with fluid by a supply duct described above and connected to a collector box described above. For example, the first openings may be connected to tubes forming a bundle of a heat exchanger, and at least a second opening to this supply duct of the heat exchanger.
Selon une caractéristique de ce dispositif de chauffage, de ventilation et/ou de climatisation, on pourra prévoir que les parois latérales déformées du réceptacle pour fixer le couvercle par rapport à la boite collectrice permettent également la fixation du conduit, via sa collerette par rapport à cette même boite collectrice. Bien entendu, les caractéristiques, les variantes et les différentes formes de réalisation de l'invention peuvent être associées les unes avec les autres, selon diverses combinaisons, dans la mesure où elles ne sont pas incompatibles ou exclusives les unes des autres. According to one characteristic of this heating, ventilation and / or air conditioning device, provision may be made for the deformed side walls of the receptacle for fixing the lid with respect to the collecting box also for fixing the duct, via its flange with respect to this same collector box. Of course, the features, variants and different embodiments of the invention may be associated with each other, in various combinations, to the extent that they are not incompatible or exclusive of each other.
Les caractéristiques de l'invention mentionnées ci-dessus ainsi que d'autres, apparaîtrons plus clairement à la lecture ci-dessous de la description détaillée d'exemples non limitatifs, en se référant aux dessins annexés suivants : The characteristics of the invention mentioned above as well as others, will appear more clearly on reading below the detailed description of nonlimiting examples, with reference to the following appended drawings:
la figure 1 est une vue en coupe verticale d'un mode de réalisation d'une boîte collectrice selon l'invention ;  Figure 1 is a vertical sectional view of an embodiment of a header box according to the invention;
la figure 2 est une vue schématique de dessus de la boite collectrice illustré sur la figure 1 ;  Figure 2 is a schematic top view of the manifold illustrated in Figure 1;
la figure 3 est une vue en coupe selon le plan de coupe III- III illustré sur la figure 1 ; et  Figure 3 is a sectional view along the sectional plane III-III shown in Figure 1; and
la figure 4 est une vue en perspective d'un mode de réalisation du conduit d'alimentation apte à coopérer avec la boite collectrice et visible sur les figure 1 et 2.  FIG. 4 is a perspective view of an embodiment of the supply duct adapted to cooperate with the collector box and visible in FIGS. 1 and 2.
Une boîte collectrice 1 selon l'invention comprend au moins un réceptacle 2 délimité par une paroi de fond 4 et deux parois latérales 6 prolongeant sensiblement perpendiculairement deux bords opposés de cette paroi de fond, de sorte à former une cavité sensiblement en forme de U. Afin de contenir un fluide dans la boîte collectrice, celle-ci comprend également un couvercle 8 amené à être disposé sensiblement parallèlement à la paroi de fond et qui sera décrit plus en détails ci-après, et deux parois d'extrémité 10 qui s'étendent transversalement aux parois de fond et latérales. La boîte collectrice est raccordée, au sein d'une boucle thermique, dans un dispositif de chauffage, ventilation et/ou climatisation, via des tuyaux de raccordement rendus solidaires d'éléments de connexion portés par cette boîte, et notamment via un conduit d'alimentation 12 d'un premier fluide tel qu'illustré sur la figure 4 et qui sera détaillé plus en détails ci-après. A manifold 1 according to the invention comprises at least one receptacle 2 delimited by a bottom wall 4 and two side walls 6 extending substantially perpendicularly to two opposite edges of this bottom wall, so as to form a substantially U-shaped cavity. In order to contain a fluid in the manifold, it also comprises a lid 8 arranged to be disposed substantially parallel to the bottom wall and which will be described in more detail below, and two end walls 10 which extend transversely to the bottom and side walls. The collector box is connected, within a thermal loop, in a heating, ventilation and / or air conditioning device, via connection pipes made integral with connection elements carried by this box, and in particular via a conduit of supply 12 of a first fluid as shown in Figure 4 and which will be detailed in more detail below.
Dans le cadre de l'application de la boîte collectrice à un échangeur de chaleur, un premier fluide est amené par le conduit d'alimentation 12 en amont de la boîte collectrice, pour être déversé dans le réceptacle 2 qui forme une chambre de répartition de ce fluide. Le fluide est ensuite réparti entre différents tubes d'échange 14 permettant, dans une chambre d'échange thermique non représentée, de faciliter l'échange thermique avec un deuxième fluide circulant le long de ces tubes d'échanges. On comprend que dans ce contexte, le réceptacle est réalisé à partir de matériaux étanches au fluide qu'il doit accueillir. De même, les épaisseurs des parois de fond et latérales sont choisies de manière à résister à la pression du fluide présent dans la boîte. In the context of the application of the header to a heat exchanger, a first fluid is fed through the supply conduit 12 upstream of the box collector, to be poured into the receptacle 2 which forms a distribution chamber of this fluid. The fluid is then distributed between different exchange tubes 14 allowing, in a heat exchange chamber not shown, to facilitate heat exchange with a second fluid flowing along these exchange tubes. It is understood that in this context, the receptacle is made from fluid-tight materials it must accommodate. Likewise, the thicknesses of the bottom and side walls are chosen so as to withstand the pressure of the fluid present in the box.
La boîte collectrice 1 peut comporter une pluralité de réceptacles 2 alignés dans la direction d'allongement de la boîte, correspondant à l'axe A- A visible sur les figures 2 et 3, chaque réceptacle 2 étant fermé transversalement par des parois d'extrémité 16, qui peuvent prendre la forme d'une paroi de fermeture transversale de la boîte pour les réceptacles agencés aux extrémités de cette boîte, ou la forme d'une paroi de séparation transversale (tel que visible sur la figure 1) entre deux réceptacles consécutifs. The manifold 1 may comprise a plurality of receptacles 2 aligned in the extension direction of the box, corresponding to the axis A-A visible in FIGS. 2 and 3, each receptacle 2 being closed transversely by end walls. 16, which may take the form of a transverse closure wall of the box for the receptacles arranged at the ends of this box, or the shape of a transverse partition wall (as visible in Figure 1) between two consecutive receptacles .
Le couvercle 8 ferme le réceptacle 2 au niveau des extrémités libres des parois latérales 6, c'est-à-dire les extrémités opposées à la paroi de fond 4. Le couvercle peut être réalisé à partir des mêmes matériaux que les parois latérales et la paroi de fond de la boîte, comme par exemple à partir de métal ou d'un composé à base de polymères. The lid 8 closes the receptacle 2 at the free ends of the side walls 6, that is to say the ends opposite to the bottom wall 4. The cover can be made from the same materials as the side walls and the bottom wall of the box, such as for example from metal or a compound based on polymers.
Le couvercle 8 est fixé sur les parois latérales 6 par une technique connue d'assemblage de tôles par déformation à froid, à savoir ici par un sertissage des parois latérales avec le couvercle. Afin de faciliter ces opérations, le couvercle peut reposer sur des pattes 18 agencées en saillie des parois latérales vers l'intérieur du réceptacle. Selon l'invention, il convient de noter que l'opération de déformation à froid permettant de solidariser le couvercle 8 aux parois latérales 6 permet en outre la fixation du conduit d'alimentation 12 du premier fluide à la boîte collectrice 1, tel que cela sera détaillé ci- après. The cover 8 is fixed on the side walls 6 by a known technique of assembling sheets by cold deformation, namely here by crimping the side walls with the lid. In order to facilitate these operations, the cover may rest on tabs 18 arranged projecting from the side walls towards the inside of the receptacle. According to the invention, it should be noted that the cold deformation operation for securing the cover 8 to the side walls 6 further allows the attachment of the supply conduit 12 of the first fluid to the manifold 1, as this will be detailed below.
La boîte collectrice présente une pluralité d'ouvertures pour permettre la fixation de tubes permettant la circulation de fluide à travers le ou les réceptacles 2. Ces ouvertures consistent en, d'une part, des premières ouvertures 20 traversant la paroi de fond 4 du réceptacle 2 pour permettent à un fluide de sortir de la boîte collectrice et une deuxième ouverture 22 réalisée dans le couvercle pour permettre le passage d'un fluide de l'extérieur vers l'intérieur de la boîte, cette deuxième ouverture 22 présentant selon l'invention une forme spécifique, ici oblongue, afin d'être en vis-à-vis d'une pluralité de premières ouvertures 20, qui sont ici de forme circulaire. The manifold has a plurality of openings to allow the attachment of tubes for the circulation of fluid through the receptacle or receptacles 2. These openings consist, on the one hand, of the first openings 20 through the bottom wall 4 of the receptacle 2 to allow a fluid to exit the manifold and a second opening 22 made in the lid to allow the passage of a fluid from the outside to the inside of the box, the second opening 22 having the invention a specific shape, here oblong, to be vis-à-vis a plurality of first openings 20, which are here circular.
Notamment, on caractérisera la forme allongée de la deuxième ouverture par un rapport, entre sa plus grande et sa plus petite dimension, au moins supérieur à 1,5. Tel que cela vient d'être précisé, cela permet d'aménager une deuxième ouverture 22, par laquelle le premier fluide pénètre dans le réceptacle, en regard d'une pluralité de premières ouvertures 20, par lesquelles le premier fluide quitte le réceptacle. Le flux du premier fluide à travers le réceptacle est ainsi sujet à moins de perturbations et subit moins de pertes de charge. In particular, the elongate shape of the second opening will be characterized by a ratio, between its largest and its smallest dimension, of at least greater than 1.5. As just mentioned, this makes it possible to arrange a second opening 22, through which the first fluid enters the receptacle, facing a plurality of first openings 20, through which the first fluid leaves the receptacle. The flow of the first fluid through the receptacle is thus subject to less disturbances and undergoes less pressure losses.
Les premières et deuxième ouvertures sont alignées selon un même axe A-A visible sur la figure 3 et la deuxième ouverture de forme oblongue 22 est agencée de sorte que sa plus grande dimension, ou longueur, soit confondue avec l'axe A-A. Par ailleurs, la largeur de la deuxième ouverture 22 est égale ou supérieure au diamètre des premières ouvertures 20, ou au diamètre de la plus grande des premières ouvertures si celles-ci présentent des dimensions différentes, de sorte que la totalité de la pluralité des premières ouvertures 20 en vis-à-vis de la deuxième ouverture 22 est directement accessible depuis cette deuxième ouverture 22. En d'autres termes, la pluralité des premières ouvertures 20 en vis-à-vis de la deuxième ouverture 22, ici au nombre de trois (visibles sur la figure 4), est inscrit dans un volume s'étendant du couvercle à la paroi de fond, perpendiculairement au couvercle et/ou à la paroi de fond, et ayant pour section la forme oblongue de la deuxième ouverture. On comprend que les dimensions de la deuxième ouverture 22 dépendent des dimensions des premières ouvertures 20 et de leur espacement. Selon le présent exemple, les premières ouvertures 20 ont un diamètre de 5 mm et sont espacées entre elles, le long de l'axe A-A, de 3 mm, tandis que la longueur et la largeur de la deuxième ouverture 22 sont respectivement égales ou supérieures à 25mm et 10mm. The first and second openings are aligned along the same axis A-A visible in Figure 3 and the second oblong opening 22 is arranged so that its largest dimension, or length, coincides with the axis A-A. Furthermore, the width of the second opening 22 is equal to or greater than the diameter of the first openings 20, or the diameter of the largest of the first openings if they have different dimensions, so that all of the plurality of first openings 20 vis-à-vis the second opening 22 is directly accessible from this second opening 22. In other words, the plurality of first openings 20 vis-à-vis the second opening 22, here in the number of three (visible in Figure 4), is written in a volume extending from the cover to the bottom wall, perpendicular to the cover and / or the bottom wall, and having section oblong shape of the second opening. It is understood that the dimensions of the second opening 22 depend on the dimensions of the first openings 20 and their spacing. According to the present example, the first openings 20 have a diameter of 5 mm and are spaced apart along the axis AA by 3 mm, while the length and the width of the second opening 22 are respectively equal to or greater than at 25mm and 10mm.
Dans ce contexte de l'invention, où la forme allongée de la deuxième ouverture 22 permet de recouvrir une pluralité de premières ouvertures 20, on comprend que le premier fluide pénétrant dans la chambre de répartition que forme la boîte collectrice peut être évacué via les premières ouvertures 20 avec un écoulement majoritairement linéaire, c'est-à-dire avec un minimum de perturbation du flux (le flux indirect étant représenté par les deux flèches Fi courbées aux extrémités du flux direct Fi visible sur la figure 1). In this context of the invention, where the elongate shape of the second opening 22 covers a plurality of first openings 20, it is understood that the first fluid entering the distribution chamber that forms the header can be removed via the first openings 20 with a predominantly linear flow, that is to say with a minimum of disturbance of the flow (the indirect flow being represented by the two arrows Fi curved at the ends of the direct flow Fi visible in Figure 1).
On comprend que cette caractéristique peut être obtenue avec une pluralité de formes, comme des formes oblongues, rectangulaires, dès lors que la dimension selon la direction d'allongement de la boîte permet le recouvrement de plusieurs premières ouvertures par la deuxième ouverture. It is understood that this characteristic can be obtained with a plurality of shapes, such as oblong, rectangular shapes, since the dimension in the direction of elongation of the box allows the recovery of several first openings by the second opening.
Dans un mode de réalisation particulier de l'invention, le couvercle 8 comporte sur sa face supérieure, tournée à l'opposé du réceptacle, un fût 24 positionné autour de la deuxième ouverture 22. On comprend donc que le fût présente lui aussi une forme allongée selon la direction d'allongement A- A de la boite collectrice, et ici une forme oblongue, tel que cela est particulièrement visible sur la figure 3. In a particular embodiment of the invention, the cover 8 has on its upper face, facing away from the receptacle, a shank 24 positioned around the second opening 22. It is thus clear that the shank also has a shape elongated in the direction of elongation A-A of the collector box, and here an oblong shape, as is particularly visible in Figure 3.
On va maintenant décrire le conduit d'alimentation 12 connecté à une boîte collectrice 1 décrite ci-dessus, particulier en ce qu'il présente à son extrémité proximale 26, c'est-à-dire l'extrémité amenée à être rendue solidaire de la boite collectrice, une ouverture de forme semblable à une deuxième ouverture du couvercle, c'est-à-dire de forme allongée, ici oblongue. We will now describe the supply conduit 12 connected to a manifold 1 described above, particularly in that it has at its proximal end 26, that is to say the end to be made integral with the collector box, an opening of similar shape to a second opening of the lid, that is to say elongated, here oblong.
Par ailleurs, ce conduit présente, toujours à cette extrémité proximale 26, une collerette 28, prolongeant sensiblement perpendiculairement la paroi du conduit à cette extrémité proximale, et entourant l'ouverture du conduit. Cette collerette, ici continue, mais qui pourrait être discontinue sans sortir du contexte de l'invention, est agencée pour permettre le sertissage du conduit sur le couvercle lors de l'opération de sertissage du couvercle sur la boîte collectrice. Ainsi fixé, le conduit communique fluidiquement avec la chambre de répartition via la deuxième ouverture 22 de la boîte collectrice. Moreover, this duct has, always at this proximal end 26, a flange 28, extending substantially perpendicularly to the wall of the duct at this proximal end, and surrounding the opening of the duct. This flange, here continuous, but which could be discontinuous without departing from the context of the invention, is arranged to allow the crimping of the conduit on the lid during the operation of crimping the lid on the manifold. Thus fixed, the conduit fluidly communicates with the distribution chamber via the second opening 22 of the manifold.
On a représenté de façon schématique sur la figure 3 le recouvrement de la collerette 28 par deux bords rabattus 30, de manière à l'emprisonner entre la face supérieure du couvercle et les bords rabattus 30 des parois latérales 6 de la boite. FIG. 3 shows diagrammatically the covering of the flange 28 by two folded edges 30, so as to trap it between the upper face of the lid and the folded edges 30 of the side walls 6 of the box.
Cette opération de déformation de matière à froid pour boquer en position la collerette 28 et donc le conduit d'alimentation 12 par rapport à la boite collectrice 1 est réalisée lorsque le conduit 12 est parfaitement en place en regard de la deuxième ouverture 22. Le fût 24 permet d'aligner l'ouverture aménagée à l'extrémité proximale 26 du conduit 12 avec la deuxième ouverture 22, par emmanchement, ou au moins par guidage du conduit autour du fût. On pourra prévoir que l'épaisseur de la collerette 28 est supérieure à l'épaisseur du conduit, au moins dans la zone d'extrémité proximale que la collerette prolonge sensiblement perpendiculairement. On comprend que cela permet d'assurer un meilleur maintien du conduit sur la boîte collectrice via la sur épaisseur de la collerette, sans que l'ensemble du conduit soit surdimensionné, ce qui évite un surcoût et un surpoids. This operation of deformation of cold material to boquer in position the collar 28 and thus the supply conduit 12 relative to the manifold 1 is made when the conduit 12 is perfectly in place next to the second opening 22. The barrel 24 aligns the opening formed at the proximal end 26 of the conduit 12 with the second opening 22, by fitting, or at least by guiding the conduit around the barrel. It can be provided that the thickness of the collar 28 is greater than the thickness of the conduit, at least in the proximal end zone that the collar extends substantially perpendicularly. It is understood that this ensures a better maintenance of the conduit on the manifold via the thickness of the collar, without the entire duct is oversized, which avoids additional cost and overweight.
On pourrait prévoir que seule une extrémité libre d'une paroi latérale est déformée pour venir recouvrir la collerette lorsque le conduit d'alimentation est en position, mais dans le mode de réalisation préféré, afin d'assurer un meilleur maintien, la collerette est maintenue sur le couvercle par les extrémités de deux parois latérales en vis-à-vis. It could be expected that only a free end of a side wall is deformed to come to cover the flange when the supply duct is in position, but in the preferred embodiment, to ensure better maintenance, the flange is maintained on the lid by the ends of two side walls vis-à-vis.
La description qui précède explique clairement comment l'invention permet d'atteindre les objectifs qu'elle s'est fixés et notamment de proposer une boite collectrice dans un dispositif de ventilation, chauffage et/ou climatisation qui soit particulièrement facile à monter et qui permette une distribution du fluide à travers la boîte collectrice minimisant les pertes de charge. Il est particulièrement intéressant selon l'invention que la deuxième ouverture réalisée sur le couvercle du collecteur, pour coopérer avec un tuyau d'alimentation et faciliter le passage du fluide à travers une chambre de répartition de la boite collectrice en direction d'une pluralité de tubes, soit de dimensions spécifiques pour être en vis-à-vis d'une pluralité de ces tubes, afin d'augmenter la linéarité d'écoulement de ce fluide et de diminuer les pertes de charge qui résulteraient d'un écoulement linéaire. The foregoing description clearly explains how the invention makes it possible to achieve the objectives it has set itself and in particular to propose a collection box in a ventilation, heating and / or air conditioning device which is particularly easy to assemble and which makes it possible to a distribution of the fluid through the manifold minimizing pressure losses. It is particularly interesting according to the invention that the second opening made on the cover of the collector, to cooperate with a feed pipe and facilitate the passage of fluid through a distribution chamber of the collector box towards a plurality of tubes, or specific dimensions to be vis-à-vis a plurality of these tubes, to increase the flow linearity of the fluid and reduce the pressure losses that would result from a linear flow.
Bien entendu, diverses modifications peuvent être apportées par l'homme du métier aux structures de la boite collectrice et du conduit associé, dès lors que l'on permet d'assurer un écoulement du fluide linéaire par la mise en regard d'une pluralité de tubes d'évacuation d'un fluide en aval d'une chambre de répartition avec un conduit d'alimentation de ce fluide en amont de la chambre de répartition. Of course, various modifications can be made by those skilled in the art to the structures of the collector box and associated conduit, since it is possible to ensure a flow of the linear fluid by setting a plurality of tubes for discharging a fluid downstream of a distribution chamber with a supply duct for this fluid upstream of the distribution chamber.

Claims

Revendications claims
1. Boîte collectrice (1) de fluide pour un échangeur de chaleur comprenant un réceptacle (2) délimité par au moins une paroi latérale (6) et une paroi de fond (4) comportant plusieurs premières ouvertures (20) sensiblement alignées selon une direction d'allongement de la boite (A-A), le réceptacle étant fermé par un couvercle (8) comportant au moins une deuxième ouverture (22) de réception d'un conduit d'alimentation en vis-à-vis de plusieurs premières ouvertures (20), caractérisé en ce que ladite deuxième ouverture (22) a une forme allongée présentant une plus grande dimension selon la direction d'allongement de la boite (A-A). A fluid collector box (1) for a heat exchanger comprising a receptacle (2) delimited by at least one side wall (6) and a bottom wall (4) having a plurality of first openings (20) substantially aligned in one direction. extending the box (AA), the receptacle being closed by a cover (8) having at least a second opening (22) for receiving a supply duct opposite several first openings (20). ), characterized in that said second opening (22) has an elongated shape having a larger dimension in the direction of elongation of the box (AA).
2. Boîte collectrice selon la revendication 1, caractérisé en ce que la plus grande dimension de ladite deuxième ouverture (22) est supérieure à la distance séparant deux premières ouvertures (20) successives, agencées en vis-à-vis de ladite deuxième ouverture. 2. header box according to claim 1, characterized in that the largest dimension of said second opening (22) is greater than the distance between two first openings (20) successive, arranged vis-à-vis said second opening.
3. Boîte collectrice selon la revendication précédente, caractérisé en ce que ladite deuxième ouverture (22) est disposée en vis-à-vis d'au moins trois premières ouvertures (20). 3. Slip-box according to the preceding claim, characterized in that said second opening (22) is disposed vis-à-vis at least three first openings (20).
4. Boîte collectrice selon l'une des revendications précédentes, caractérisé en ce que ladite deuxième ouverture (22) présente un rapport entre sa plus grande et sa plus petite dimension au moins supérieur à 1,5. 4. header box according to one of the preceding claims, characterized in that said second opening (22) has a ratio between its largest and its smallest dimension at least greater than 1.5.
5. Boîte collectrice selon l'une des revendications précédentes, caractérisé en ce que ladite deuxième ouverture (22) présente une forme oblongue. 5. header box according to one of the preceding claims, characterized in that said second opening (22) has an oblong shape.
6. Boîte collectrice selon l'une des revendications précédentes, caractérisé en ce qu'elle comporte un fût (24) agencé en saillie de la face extérieure du couvercle (8) pour entourer ladite deuxième ouverture (26). 6. header box according to one of the preceding claims, characterized in that it comprises a shaft (24) arranged projecting from the outer face of the cover (8) to surround said second opening (26).
7. Boîte collectrice selon l'une des revendications précédentes, caractérisé en ce que l'extrémité libre d'au moins une paroi latérale (6) et le couvercle (8) sont déformés à froid pour réaliser la fixation du couvercle sur le réceptacle (2). Container according to one of the preceding claims, characterized in that the free end of at least one side wall (6) and the cover (8) are cold-deformed for fixing the lid on the receptacle ( 2).
8. Boîte collectrice selon la revendication précédente, caractérisé en ce que le couvercle (8) est serti sur le réceptacle (2) par une ou plusieurs extrémités d'une ou de plusieurs parois latérales (6) du réceptacle. 8. collector box according to the preceding claim, characterized in that the cover (8) is crimped on the receptacle (2) by one or more ends of one or more side walls (6) of the receptacle.
9. Conduit (12) connecté à une boîte collectrice (1) selon l'une des revendications précédentes, caractérisé en ce qu'il comprend à une extrémité proximale (26) un orifice de forme allongée semblable à la forme de ladite deuxième ouverture (22) formée dans le couvercle (8). 9. Conduit (12) connected to a header (1) according to one of the preceding claims, characterized in that it comprises at a proximal end (26) an elongate orifice similar to the shape of said second opening ( 22) formed in the cover (8).
10. Conduit selon la revendication 9, caractérisé en ce qu'il comprend une collerette (28) entourant au moins partiellement ledit orifice, agencée pour permettre le montage dudit conduit sur le couvercle (8) de la boîte collectrice. 10. Conduit according to claim 9, characterized in that it comprises a flange (28) at least partially surrounding said orifice, arranged to allow the mounting of said conduit on the cover (8) of the manifold.
11. Conduit selon la revendication précédente, caractérisé en ce qu'au moins une partie de la collerette (28) est maintenue sur le couvercle (8) par une ou plusieurs extrémités d'une paroi latérale (6) du réceptacle (2) déformée à froid. 11. Conduit according to the preceding claim, characterized in that at least a portion of the flange (28) is held on the cover (8) by one or more ends of a side wall (6) of the receptacle (2) deformed Cold.
12. Conduit d'alimentation selon la revendication 10 ou 11, caractérisé en ce que la collerette (28) a une épaisseur de paroi supérieure à l'épaisseur de la paroi du conduit (12) au voisinage de l'extrémité proximale (26) qu'elle prolonge. Feed duct according to claim 10 or 11, characterized in that the flange (28) has a wall thickness greater than the thickness of the duct wall (12) in the vicinity of the proximal end (26). that it prolongs.
13. Dispositif de chauffage, de ventilation et/ou de climatisation comprenant au moins un conduit (12) selon l'une des revendications 9 à 12 connecté à une boîte collectrice (1) selon l'une des revendications 1 à 8. 13. Heating, ventilation and / or air conditioning device comprising at least one duct (12) according to one of claims 9 to 12 connected to a manifold (1) according to one of claims 1 to 8.
14. Dispositif selon la revendication précédente, caractérisé en ce que les parois latérales (6) déformées du réceptacle (2) fixent par rapport à la boite collectrice à la fois le couvercle (8) et la collerette (28) du conduit (12). 14. Device according to the preceding claim, characterized in that the deformed side walls (6) of the receptacle (2) fix relative to the manifold box both the cover (8) and the flange (28) of the duct (12). .
EP17787220.7A 2016-09-27 2017-09-27 Fluid collecting box for a heat exchanger, associated heat exchanger Active EP3519755B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659128A FR3056728B1 (en) 2016-09-27 2016-09-27 FLUID COLLECTOR BOX FOR HEAT EXCHANGER, ASSOCIATED HEAT EXCHANGER.
PCT/FR2017/052611 WO2018060606A1 (en) 2016-09-27 2017-09-27 Fluid collecting box for a heat exchanger, associated heat exchanger

Publications (2)

Publication Number Publication Date
EP3519755A1 true EP3519755A1 (en) 2019-08-07
EP3519755B1 EP3519755B1 (en) 2024-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17787220.7A Active EP3519755B1 (en) 2016-09-27 2017-09-27 Fluid collecting box for a heat exchanger, associated heat exchanger

Country Status (4)

Country Link
EP (1) EP3519755B1 (en)
CN (1) CN110100145A (en)
FR (1) FR3056728B1 (en)
WO (1) WO2018060606A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178213A (en) * 1991-09-03 1993-01-12 Valeo Engine Cooling, Incorporated Automotive ram air system
JPH09112779A (en) * 1995-10-16 1997-05-02 Zexel Corp Assembling for exit/entrance pipe to tank of heat exchanger
JP4212306B2 (en) * 2002-06-18 2009-01-21 株式会社日本クライメイトシステムズ Heat exchanger pipe mounting structure
JP2007192502A (en) * 2006-01-20 2007-08-02 Denso Corp Heat exchanger
FR3007515B1 (en) * 2013-06-20 2017-12-15 Valeo Systemes Thermiques HEAT EXCHANGER, IN PARTICULAR FOR THE LOOPS OR AIR CONDITIONING CIRCUITS OF VEHICLES

Also Published As

Publication number Publication date
EP3519755B1 (en) 2024-04-24
WO2018060606A1 (en) 2018-04-05
FR3056728B1 (en) 2019-04-05
CN110100145A (en) 2019-08-06
FR3056728A1 (en) 2018-03-30

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