EP2726808B1 - Heat exchanger, housing, and air-conditioning circuit including such an exchanger - Google Patents
Heat exchanger, housing, and air-conditioning circuit including such an exchanger Download PDFInfo
- Publication number
- EP2726808B1 EP2726808B1 EP12731421.9A EP12731421A EP2726808B1 EP 2726808 B1 EP2726808 B1 EP 2726808B1 EP 12731421 A EP12731421 A EP 12731421A EP 2726808 B1 EP2726808 B1 EP 2726808B1
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- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- tubes
- row
- bottom plate
- compartment
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
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- 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
- F28D1/0535—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 the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0246—Arrangements for connecting header boxes with flow lines
- F28F9/0256—Arrangements for coupling connectors with flow lines
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- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0084—Condensers
Definitions
- the present invention relates to a heat exchanger according to the preamble of claim 1, for example used as a condenser in a ventilation system, heating and / or air conditioning of a passenger compartment of a motor vehicle.
- a heat exchanger is known from FR-A1-2 803 378 .
- the invention also relates to a ventilation, heating and / or air conditioning installation box and an air conditioning circuit comprising such a heat exchanger.
- a second longitudinal partition wall arranged in the second manifold, longitudinally separates the latter into two fluid reversal compartments.
- the second partition is multi-perforated, so as to put in fluid communication the two turning compartments.
- the reduced section of the perforations of the second partition is at the origin of significant pressure losses, which degrade the efficiency of the heat exchanger.
- the plurality of perforations weakens the structure of the second header, thereby affecting the overall strength of the heat exchanger. Consequently, any increase in the number or dimensions of the perforations would further weaken the structure of the exchanger.
- the object of the present invention is to remedy these drawbacks and, in particular, to provide a front or inner face heat exchanger with minimal pressure drop and satisfactory thermal performance, and in particular a uniformity of the flow temperature of air at the outlet of the exchanger in the case of an indoor exchanger.
- the heat exchanger comprises the features defined in claim 1.
- the partitions are transverse in that they extend in a direction perpendicular to a front face of the exchanger, said face receiving the air flow with which the coolant exchange.
- the refrigerant fluid for circulation in the heat exchanger is uniformly distributed in the tubes of the first row through the fluid inlet compartment.
- the coolant is guided in the tubes of the second row, facing, using the corresponding reversing compartments.
- the refrigerant is discharged outside the heat exchanger.
- the use of a plurality of reversing compartments makes it possible to improve the distribution of the fluid in the tubes - and thus to improve the efficiency of the exchanger by making the temperature of the air at the outlet of the exchanger uniform, in particular while reducing the pressure losses that could adversely affect the performance of the exchanger, the turning compartments being advantageously dimensioned to reduce as much as possible load losses.
- the size of such an exchanger is substantially reduced and the rigidity thereof improved by the presence of a plurality of transverse partitions.
- the invention makes it possible to optimize the thermal performance of the heat exchanger relative to an imposed space requirement, in particular when the heat exchanger must be integrated in a heating, ventilation and / or heating casing. in the latter case, the heat exchanger being an indoor heat exchanger.
- the inverting compartments have identical dimensions with respect to each other, so that they all accommodate the same number of tubes of the first and second rows.
- each turning compartment can accommodate one or a plurality of tubes of each of the two rows.
- a portion of said metal plate is in sealing contact with the corresponding bottom plate, to form the longitudinal partition wall.
- the longitudinal separation partition may be separate and independent of the cover and be interposed between the latter and the bottom plate.
- each of the orifices of the bottom plate is surmounted by an external collar, that is to say which extends outwardly of an internal volume defined by the manifold, for fixing corresponding tube.
- the lid of the second manifold is in the form of a stamped metal plate defining the flipping compartments.
- portions of said metal plate are in sealing contact with the corresponding bottom plate, to form the transverse partition walls.
- the transverse partition walls can be separate and independent of the cover and be interposed between the latter and the bottom plate.
- the heat exchanger preferably comprises a refrigerant inlet tubing and a refrigerant outlet tubing in fluid communication with the inlet compartment and the outlet compartment, respectively.
- the inlet and outlet pipes may each comprise a lateral skirt attached to an outer face of the first manifold, which facilitates the pre-assembly before brazing of the heat exchanger, in particular by holding together the bottom plate and the cover of the first collector box.
- the heat exchanger advantageously comprises corrugated spacers arranged such that each spacer is disposed between two adjacent tubes of the first row and extends between the two facing adjacent tubes belonging to the second row.
- the first and second rows of tubes extend in the vertical direction, so as to minimize the temperature differences of the air output of the heat exchanger.
- such an orientation facilitates the evacuation of the water which condenses on an outer face of the tubes.
- the gravity and the vertical character of the tubes when the indoor heat exchanger is installed in the ventilation system facilitates the flow of this water.
- the invention also relates to a housing of a ventilation system, heating and / or air conditioning, including a passenger compartment of a motor vehicle, comprising a heat exchanger of the type described above.
- the present invention also relates to an air conditioning circuit inside which circulates a refrigerant fluid, comprising at least one compressor, an external heat exchanger, an evaporator and an indoor heat exchanger as detailed above.
- the heat exchanger 1 is an internal condenser integrated in a motor vehicle air conditioning circuit (not shown in the figures) operating at least in a heat pump mode, the internal condenser being arranged in a housing of the ventilation system, heating and / or air conditioning of the vehicle (not shown).
- such a heat exchanger could also be used as a front-end heat exchanger for a vehicle, subject to modifications relating, in particular, to the dimensions of the structure of the exchanger.
- the heat exchanger 1 which extends over a width l in a longitudinal direction x, a depth p in a transverse direction y perpendicular to the longitudinal direction x, and a height h according to a vertical direction z perpendicular to the longitudinal direction x and to the transverse direction y, comprises a bundle of tubes formed of a plurality of longitudinal tubes 2 - extending in the vertical direction z - within which a cooling fluid can pass which comes from the air conditioning circuit.
- the tubes 2 could still be arranged horizontally or at any inclination, the vertical direction being the preferred direction for the indoor exchanger mounted in the housing of the ventilation system of the vehicle.
- Vertical or horizontal direction of an element, in particular the tubes, is determined with regard to the position that the exchanger can take once installed on the vehicle, such a position that can be evaluated without necessarily arranged the exchanger in the vehicle.
- each row of tubes 3A, 3B comprises a plurality of tubes 2 regularly distributed in the longitudinal direction x.
- the heat exchanger 1 also comprises a first and a second collector boxes 4 and 5 - of elongate shape in the longitudinal direction x - within which open the tubes 2 of each of said rows 3A and 3B. The two longitudinal ends of the tubes 2 are thus received respectively in the first manifold 4 and in the second manifold 5.
- the first and second manifolds 4 and 5 each have a bottom plate 6, 7 and a cover 8, 9 attached thereto.
- the bottom plate 6, 7 and the cover 8, 9 of each of the manifolds 4, 5 have a rectangular shape and extend, in length, in the longitudinal direction x and, in width, in the transverse direction y.
- Each bottom plate 6, 7, formed of metallic material, comprises a plane contact face 6A, 7A - against which is mounted the cover 8, 9 corresponding - which is pierced with a plurality of through holes 10 distributed in a first and a second parallel array extending in the longitudinal direction x.
- the section of the orifices 10 corresponds to the external cross section of the tubes 2, so that the longitudinal end of each of the tubes 2 can pass, at least in part, the corresponding orifice 10 of the bottom plate 6, 7.
- each of the orifices 10 of the bottom plates 6 and 7 is surmounted by an outer collar 11 - whose internal section is substantially identical to that of the orifice 10 that it extends - to ensure a quality fixation of the corresponding tube 2.
- Each collar 11 extends, in the vertical direction z, outside the corresponding header 4, 5.
- each bottom plate 6, 7 comprises a plurality of attachment tabs 12 - evenly distributed along its side edges - which are folded over the side edges of the lid 8, 9 corresponding.
- the cover 8 of the first manifold 4 has first and second longitudinal recesses 13 and 14, otherwise known as longitudinal deformations - parallel to each other - which extend in the longitudinal direction x.
- the two adjacent recesses 13 and 14 have a cross section of semicircular shape.
- the longitudinal recesses 13 and 14 can be made by stamping a metal plate 15 which, when pressed, forms the cover 8 of the first manifold 4.
- the first longitudinal recess 13 is separated from the second longitudinal recess 14 by a longitudinal partition 16, extending in the x direction.
- this longitudinal partition 16 is formed by a portion of the metal plate 15 kept in sealing contact with the corresponding bottom plate, for example by brazing.
- the longitudinal partition wall 16 corresponds to a longitudinal unsworn portion of the metal plate 15, forming the cover 8.
- the first and second longitudinal recesses 13 and 14 define respectively a coolant inlet compartment 17, into which the tubes 2 of the first row 3A, and a coolant outlet compartment 18, adjacent to the inlet compartment 17, into which the tubes 2 of the second row 3B open.
- the orifices 10 of the first row of the bottom plate 6 open into the inlet compartment 17, while those of the second row open into the outlet compartment 18.
- One of the longitudinal ends of the first and second recesses 13 and 14 is open and opens into one of the longitudinal ends of the cover 8, the opposite longitudinal end being closed by a transverse partition 19 formed by a non-stamped portion of the metal plate 15. sealed contact with the bottom plate 6.
- the bottom plate 6 of the first manifold 4 comprises two gutters, otherwise called semicircular deformation 20, respectively arranged facing the longitudinal ends of the inlet and outlet compartments 17 and 18.
- Each of the semi-circular deformations 20, for example made by stamping the bottom plate 6, extends longitudinally over a reduced portion of the latter and has a cross section of semi-circular shape whose internal diameter is identical to that of the longitudinal recesses 13 and 14.
- the longitudinal recesses 13 and 14 are respectively facing semi-circular deformations 20, so as to delimit an inlet channel 21 or outlet 22 of refrigerant with circular internal and external transverse sections.
- the heat exchanger 1 comprises a coolant inlet pipe 23 and a coolant outlet pipe 24 in fluid communication respectively with the inlet compartment 17 and the outlet compartment 18, in order to allow a free flow of water. connecting the heat exchanger 1 to the refrigerant circuit.
- the inlet pipes 23 and outlet 24 each comprise a side skirt 23A, 24A attached to an outer face of the inlet channels 21 and outlet 22 of the first manifold 4, at one of its longitudinal ends. It is thus understood that the lateral skirt 23A, 23B has an internal diameter equal to the external diameter of the assembly formed by the longitudinal recess 13, 14 joined or close to the semicircular deformation 20 concerned.
- the bottom 20A of the semicircular deformations 20 is connected to the face of the bottom plate 6, turned towards the cover 8, by an intermediate connecting zone 20B which has, in axial section, a predetermined curvature comprising a point of inflection O.
- the cover 9 of the second manifold 5 has a plurality of identical transversal recesses - parallel to each other - which extend in the transverse direction y.
- the transverse recesses 25 have a cross section of substantially semicircular shape. They can be made by stamping a metal plate 26 which, when pressed, forms the lid 9 of the second header 5.
- each transverse partition 27 is formed by a portion of the metal plate 26 held in sealing contact with the corresponding bottom plate 7.
- the transverse partition walls 27 each correspond to a longitudinal unsworn portion of the metal plate 26 which forms the cover 9.
- the transverse recesses 25 define refrigerant flipping compartments 28 into which two tubes 2 of the first row 3A and two tubes 2 open. of the second row 3B. It goes without saying that the number of tubes 2 of the first row 3A and the second row 3B opening in each turnaround compartment 28 may be less than or greater than two.
- Each turnaround compartment 28 is devoid of fluid communication with the adjacent turnaround compartment (s) 28.
- each turning compartment 28 puts in fluid communication two tubes 2 of the first row 3A with the two tubes 2 opposite the second row 3B.
- the section of the turning compartments 28 is advantageously determined so that the pressure drops of the fluid flowing through the heat exchanger 1 are minimized.
- the heat exchanger 1 also comprises corrugated spacers 29 formed of a plurality of heat exchange fins.
- Each corrugated spacer 29 is disposed between two adjacent tubes 2 of the first row 3A and extends between the two adjacent tubes 2 opposite belonging to the second row 3B. A solder contact is maintained between the corrugated insert 29 and the corresponding tubes 2 which frame it to facilitate heat exchange.
- the spacers 29 disposed at the ends of the bundle of tubes 2 are in contact with a single tube 2 of the first row 3A and the second row 3B and with an end plate 30 providing a stiffening of the structure of the heat exchanger 1.
- the refrigerant circulating in the heat exchanger 1 is uniformly distributed in the tubes 2 of the first row 3A through the inlet compartment 17, after being introduced into it by the inlet manifold 23, as represented symbolically arrow F1.
- the coolant is guided in the tubes 2 of the second row 3B through the corresponding turning compartments 28.
- the refrigerant then passes through the tubes 2 of the second row 3B to end in the outlet compartment 18 through which it is finally discharged outside the heat exchanger 1, after passing through the outlet pipe 24, as the illustrates the arrow F2.
- the circulation of the refrigerant fluid in the heat exchanger 1 is a two-pass circulation, the first pass corresponding to the crossing of the first row of tube 3A, the second pass corresponding to the passing through the second row 3B, the air symbolically represented by the arrow G traversing in order the second row of tubes 3B and the first row of tubes 3A.
- it limits the internal pressure losses, particularly in comparison with a four-pass heat exchanger, while maintaining a uniformity of temperature on the front side of the exchanger which makes it compatible and usable for mounting in a housing of a vehicle ventilation system.
- the heat exchanger 1 comprises fastening means (not shown in the figures) which, once the heat exchanger installed in a housing of a ventilation system, heating and / or air conditioning, a vertical holding of his tubes.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Air-Conditioning Systems (AREA)
- Air-Conditioning For Vehicles (AREA)
Description
La présente invention concerne un échangeur de chaleur selon le préambule de la revendication 1, par exemple utilisé comme condenseur dans une installation de ventilation, chauffage et/ou climatisation d'un habitacle de véhicule automobile. Un tel échangeur est connu du
Par le document
- soit à l'aide de deux boîtes collectrices supplémentaires qui reçoivent respectivement les extrémités de la première et de la seconde rangées de tubes, ces boîtes collectrices étant reliées l'une à l'autre, à leurs extrémités longitudinales, par deux conduits de liaison. Cependant, outre sa fragilité manifeste, la liaison des boîtes collectrices supplémentaires est complexe à réaliser et provoque des pertes de charges non négligeables qui perturbent et dégradent l'efficacité de l'échangeur intérieur ;
- soit en cintrant des éléments tubulaires de manière à obtenir, à partir de chaque élément tubulaire, deux tubes dont un appartient à la première rangée et l'autre à la seconde. Cependant, lorsque l'encombrement imposé est réduit, le cintrage des tubes diminue sensiblement la hauteur "utile" du faisceau de tubes, c'est-à-dire la hauteur des tubes dédiée à l'échange de chaleur. Une partie de la hauteur des tubes se trouve en effet sacrifiée au profit du cintrage, ce qui nuit à l'efficacité thermique de l'échangeur intérieur.
- or by means of two additional manifold boxes which respectively receive the ends of the first and second rows of tubes, these manifolds being connected to one another at their longitudinal ends by two connecting ducts. However, in addition to its obvious fragility, the connection of the additional manifolds is complex to achieve and causes significant losses of loads that disturb and degrade the efficiency of the indoor heat exchanger;
- or by bending tubular elements so as to obtain, from each tubular element, two tubes, one of which belongs to the first row and the other to the second row. However, when the imposed space requirement is reduced, the bending of the tubes substantially decreases the "useful" height of the tube bundle, that is to say the height of the tubes dedicated to the heat exchange. Part of the height of the tubes is indeed sacrificed in favor of bending, which affects the thermal efficiency of the inner heat exchanger.
Par ailleurs, du document
- un compartiment d'entrée de fluide réfrigérant dans lequel débouchent les tubes de la première rangée, ce qui assure une mise en communication fluidique des canaux des tubes de la première rangée ; et
- un compartiment de sortie de fluide réfrigérant, adjacent au compartiment d'entrée, dans lequel débouchent les tubes de la seconde rangée, permettant une mise en communication fluidique des canaux des tubes de la seconde rangée.
- a refrigerant inlet compartment into which the tubes of the first row open, which ensures a fluidic communication of the channels of the tubes of the first row; and
- a coolant outlet compartment, adjacent to the inlet compartment, into which the tubes of the second row open, allowing a fluidic communication of the channels of the tubes of the second row.
Une seconde cloison longitudinale de séparation, agencée dans la seconde boîte collectrice, sépare longitudinalement cette dernière en deux compartiments de retournement de fluide. La seconde cloison est multi perforée, de manière à mettre en communication fluidique les deux compartiments de retournement.A second longitudinal partition wall, arranged in the second manifold, longitudinally separates the latter into two fluid reversal compartments. The second partition is multi-perforated, so as to put in fluid communication the two turning compartments.
Néanmoins, la section réduite des perforations de la seconde cloison est à l'origine de pertes de charges importantes, qui dégradent l'efficacité de l'échangeur de chaleur. En outre, la pluralité de perforations fragilise la structure de la seconde boîte collectrice, affectant de fait la solidité d'ensemble de l'échangeur de chaleur. En conséquence, toute augmentation du nombre ou des dimensions des perforations fragiliserait davantage la structure de l'échangeur.Nevertheless, the reduced section of the perforations of the second partition is at the origin of significant pressure losses, which degrade the efficiency of the heat exchanger. In addition, the plurality of perforations weakens the structure of the second header, thereby affecting the overall strength of the heat exchanger. Consequently, any increase in the number or dimensions of the perforations would further weaken the structure of the exchanger.
La présente invention a pour objet de remédier à ces inconvénients et, notamment, de fournir un échangeur de chaleur de face avant ou intérieur présentant des pertes de charges minimales et des performances thermiques satisfaisantes, et en particulier une uniformité de la température du flux d'air en sortie de l'échangeur dans le cas d'un échangeur intérieur.The object of the present invention is to remedy these drawbacks and, in particular, to provide a front or inner face heat exchanger with minimal pressure drop and satisfactory thermal performance, and in particular a uniformity of the flow temperature of air at the outlet of the exchanger in the case of an indoor exchanger.
A cette fin, selon l'invention, l'échangeur de chaleur comprend les caractéristiques définies dans la revendication 1.For this purpose, according to the invention, the heat exchanger comprises the features defined in claim 1.
Les cloisons sont transversales en ce sens qu'elles s'étendent selon une direction perpendiculaire à une face frontale de l'échangeur, ladite face recevant le flux d'air avec lequel le fluide réfrigérant échange.The partitions are transverse in that they extend in a direction perpendicular to a front face of the exchanger, said face receiving the air flow with which the coolant exchange.
Ainsi, grâce à l'invention, le fluide réfrigérant destiné à circuler dans l'échangeur de chaleur est distribué uniformément dans les tubes de la première rangée par l'intermédiaire du compartiment d'entrée de fluide. Après avoir traversé les tubes de la première rangée, le fluide réfrigérant est guidé dans les tubes de la seconde rangée, en regard, à l'aide des compartiments de retournement correspondants. Une fois arrivé dans le compartiment de sortie, le fluide réfrigérant est évacué à l'extérieur de l'échangeur de chaleur. La mise en oeuvre d'une pluralité de compartiments de retournement permet d'améliorer la distribution du fluide dans les tubes - et donc d'améliorer l'efficacité de l'échangeur en uniformisant notamment la température de l'air en sortie de ce dernier - tout en réduisant les pertes de charges susceptibles de nuire aux performances de l'échangeur, les compartiments de retournement étant avantageusement dimensionnés pour réduire au maximum ces pertes de charges. De plus, l'encombrement d'un tel échangeur est sensiblement réduit et la rigidité de celui-ci améliorée par la présence d'une pluralité de cloisons transversales.Thus, thanks to the invention, the refrigerant fluid for circulation in the heat exchanger is uniformly distributed in the tubes of the first row through the fluid inlet compartment. After passing through the tubes of the first row, the coolant is guided in the tubes of the second row, facing, using the corresponding reversing compartments. Once in the outlet compartment, the refrigerant is discharged outside the heat exchanger. The use of a plurality of reversing compartments makes it possible to improve the distribution of the fluid in the tubes - and thus to improve the efficiency of the exchanger by making the temperature of the air at the outlet of the exchanger uniform, in particular while reducing the pressure losses that could adversely affect the performance of the exchanger, the turning compartments being advantageously dimensioned to reduce as much as possible load losses. In addition, the size of such an exchanger is substantially reduced and the rigidity thereof improved by the presence of a plurality of transverse partitions.
En d'autres termes, l'invention permet d'optimiser les performances thermiques de l'échangeur de chaleur relativement à un encombrement imposé, en particulier lorsque l'échangeur de chaleur doit être intégré dans un boîtier de chauffage, de ventilation et/ou de climatisation, l'échangeur de chaleur étant, dans ce dernier cas, un échangeur de chaleur intérieur.In other words, the invention makes it possible to optimize the thermal performance of the heat exchanger relative to an imposed space requirement, in particular when the heat exchanger must be integrated in a heating, ventilation and / or heating casing. in the latter case, the heat exchanger being an indoor heat exchanger.
De préférence, les compartiments de retournement présentent des dimensions identiques les uns par rapport aux autres, de sorte qu'ils accueillent tous le même nombre de tubes de la première et de la seconde rangées. On notera que chaque compartiment de retournement peut accueillir un ou une pluralité de tubes de chacune des deux rangées.Preferably, the inverting compartments have identical dimensions with respect to each other, so that they all accommodate the same number of tubes of the first and second rows. Note that each turning compartment can accommodate one or a plurality of tubes of each of the two rows.
Dans l'invention,
- la première et la seconde boîtes collectrices comportent chacune une plaque de fond, comprenant une pluralité d'orifices recevant les tubes correspondants, et un couvercle rapporté sur ladite plaque de fond ; et
- le couvercle de la première boîte collectrice se présente sous la forme d'une plaque de métal emboutie définissant le compartiment d'entrée et le compartiment de sortie.
- the first and second manifolds each comprise a bottom plate, comprising a plurality of orifices receiving the corresponding tubes, and a lid attached to said bottom plate; and
- the cover of the first manifold is in the form of a stamped metal plate defining the inlet compartment and the outlet compartment.
Selon cette forme de réalisation, une portion de ladite plaque de métal est en contact étanche avec la plaque de fond correspondante, pour former la cloison longitudinale de séparation. Bien entendu, dans une variante, la cloison longitudinale de séparation peut être distincte et indépendante du couvercle et être intercalée entre ce dernier et la plaque de fond.According to this embodiment, a portion of said metal plate is in sealing contact with the corresponding bottom plate, to form the longitudinal partition wall. Of course, in a variant, the longitudinal separation partition may be separate and independent of the cover and be interposed between the latter and the bottom plate.
De préférence, le contour de chacun des orifices de la plaque de fond est surmonté d'un collet externe, c'est-à-dire qui s'étend vers l'extérieur d'un volume interne définit parla boîte collectrice, pour la fixation du tube correspondant.Preferably, the contour of each of the orifices of the bottom plate is surmounted by an external collar, that is to say which extends outwardly of an internal volume defined by the manifold, for fixing corresponding tube.
Ainsi, grâce aux collets, les extrémités longitudinales des tubes ne pénètrent pas, ou quasiment pas, dans les compartiments d'entrée, de sortie ou de retournement, selon le cas, ce qui :
- réduit les perturbations de l'écoulement du fluide réfrigérant en limitant les turbulences ;
- évite l'apparition de pertes de charges et de problèmes d'alimentation des tubes ; et
- permet une réduction des dimensions des boîtes collectrices.
- reduces disturbances of the refrigerant flow by limiting turbulence;
- avoids the appearance of pressure drops and tube feeding problems; and
- allows a reduction of the dimensions of the collector boxes.
Selon l'invention:
- la plaque de fond de la première boîte collectrice comporte deux déformations semi-circulaires disposées respectivement en regard des extrémités longitudinales des compartiments d'entrée et de sortie ; et
- le fond des déformations semi-circulaires est relié à la face de la plaque de fond, tournée vers le couvercle, par une zone intermédiaire de liaison qui présente, en coupe axiale, une courbure prédéterminée comportant un point d'inflexion.
- the bottom plate of the first collector box comprises two semicircular deformations disposed respectively facing the longitudinal ends of the inlet and outlet compartments; and
- the bottom of the semicircular deformations is connected to the face of the bottom plate, turned towards the cover, by an intermediate connecting zone which has, in axial section, a predetermined curvature comprising a point of inflection.
Ainsi, de telles déformations semi-circulaires favorisent l'écoulement du fluide réfrigérant au niveau de l'entrée/sortie de la première boîte collectrice, en prévenant la formation de turbulences par décollement des lignes de courant. En outre, les pertes de charges résultant de la géométrie de cette zone sont réduites.Thus, such semicircular deformations promote the flow of refrigerant at the inlet / outlet of the first header, preventing the formation of turbulence by detachment of the current lines. In addition, the pressure losses resulting from the geometry of this zone are reduced.
Toujours selon cette forme de réalisation, le couvercle de la seconde boîte collectrice se présente sous la forme d'une plaque de métal emboutie définissant les compartiments de retournement.Still according to this embodiment, the lid of the second manifold is in the form of a stamped metal plate defining the flipping compartments.
Avantageusement, des portions de ladite plaque de métal sont en contact étanche avec la plaque de fond correspondante, pour former les cloisons transversales de séparation. De nouveau, en variante, les cloisons transversales de séparation peuvent être distinctes et indépendantes du couvercle et être intercalées entre ce dernier et la plaque de fond.Advantageously, portions of said metal plate are in sealing contact with the corresponding bottom plate, to form the transverse partition walls. Again, alternatively, the transverse partition walls can be separate and independent of the cover and be interposed between the latter and the bottom plate.
Par ailleurs, l'échangeur de chaleur comprend de préférence une tubulure d'entrée de fluide réfrigérant et une tubulure de sortie de fluide réfrigérant en communication fluidique respectivement avec le compartiment d'entrée et le compartiment de sortie.Furthermore, the heat exchanger preferably comprises a refrigerant inlet tubing and a refrigerant outlet tubing in fluid communication with the inlet compartment and the outlet compartment, respectively.
En particulier, les tubulures d'entrée et de sortie peuvent comporter chacune une jupe latérale rapportée sur une face extérieure de la première boîte collectrice, ce qui facilite le préassemblage avant brasage de l'échangeur, notamment en maintenant assemblés la plaque de fond et le couvercle de la première boîte collectrice.In particular, the inlet and outlet pipes may each comprise a lateral skirt attached to an outer face of the first manifold, which facilitates the pre-assembly before brazing of the heat exchanger, in particular by holding together the bottom plate and the cover of the first collector box.
De plus, l'échangeur de chaleur comprend avantageusement des intercalaires ondulés agencés de telle façon que chaque intercalaire soit disposé entre deux tubes adjacents de la première rangée et se prolonge entre les deux tubes adjacents en regard appartenant à la seconde rangée.In addition, the heat exchanger advantageously comprises corrugated spacers arranged such that each spacer is disposed between two adjacent tubes of the first row and extends between the two facing adjacent tubes belonging to the second row.
De préférence, les tubes de première et seconde rangées s'étendent selon la direction verticale, de manière à réduire au maximum les écarts de température de l'air en sortie de l'échangeur de chaleur. Dans le cas d'une échangeur intérieur, une telle orientation facilite l'évacuation de l'eau qui se condense sur une face externe des tubes. En effet, la gravité et le caractère vertical des tubes quand l'échangeur intérieur est installé dans l'installation de ventilation facilite l'écoulement de cette eau.Preferably, the first and second rows of tubes extend in the vertical direction, so as to minimize the temperature differences of the air output of the heat exchanger. In the case of an indoor exchanger, such an orientation facilitates the evacuation of the water which condenses on an outer face of the tubes. Indeed, the gravity and the vertical character of the tubes when the indoor heat exchanger is installed in the ventilation system facilitates the flow of this water.
Par ailleurs, l'invention concerne également un boîtier d'une installation de ventilation, chauffage et/ou climatisation, notamment d'un habitacle de véhicule automobile, comprenant un échangeur de chaleur du type de celui décrit ci-dessus.Furthermore, the invention also relates to a housing of a ventilation system, heating and / or air conditioning, including a passenger compartment of a motor vehicle, comprising a heat exchanger of the type described above.
La présente invention concerne encore un circuit de climatisation à l'intérieur duquel circule un fluide réfrigérant, comprenant au moins un compresseur, un échangeur de chaleur extérieur, un évaporateur et un échangeur de chaleur intérieur tel que détaillé précédemment.The present invention also relates to an air conditioning circuit inside which circulates a refrigerant fluid, comprising at least one compressor, an external heat exchanger, an evaporator and an indoor heat exchanger as detailed above.
Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments semblables.
- La
figure 1 représente, dans une vue schématique en perspective, un exemple de réalisation d'un échangeur de chaleur conforme à la présente invention, une fois assemblé. - La
figure 2 illustre schématiquement, dans une vue en perspective éclatée, l'échangeur de chaleur de lafigure 1 . - La
figure 3 est une coupe axiale partielle d'une extrémité longitudinale du compartiment d'entrée de l'échangeur de chaleur de lafigure 1 .
- The
figure 1 represents, in a schematic perspective view, an embodiment of a heat exchanger according to the present invention, once assembled. - The
figure 2 schematically illustrates, in an exploded perspective view, the heat exchanger of thefigure 1 . - The
figure 3 is a partial axial section of a longitudinal end of the inlet compartment of the heat exchanger of thefigure 1 .
Sur les
On notera que, en variante, un tel échangeur de chaleur pourrait être également utilisé comme un échangeur de chaleur de face avant de véhicule, sous réserve de modifications portant, notamment, sur les dimensions de la structure de l'échangeur.It will be noted that, alternatively, such a heat exchanger could also be used as a front-end heat exchanger for a vehicle, subject to modifications relating, in particular, to the dimensions of the structure of the exchanger.
Comme le montrent ces figures, l'échangeur de chaleur 1, qui s'étend sur une largeur l selon une direction longitudinale x, sur une profondeur p selon une direction transversale y perpendiculaire à la direction longitudinale x, et sur une hauteur h selon une direction verticale z perpendiculaire à la direction longitudinale x et à la direction transversale y, comprend un faisceau de tubes formé d'une pluralité de tubes longitudinaux 2 - s'étendant suivant la direction verticale z - à l'intérieur desquels peut transiter un fluide réfrigérant qui provient du circuit de climatisation.As shown in these figures, the heat exchanger 1, which extends over a width l in a longitudinal direction x, a depth p in a transverse direction y perpendicular to the longitudinal direction x, and a height h according to a vertical direction z perpendicular to the longitudinal direction x and to the transverse direction y, comprises a bundle of tubes formed of a plurality of longitudinal tubes 2 - extending in the vertical direction z - within which a cooling fluid can pass which comes from the air conditioning circuit.
Il est à noter les tubes 2 pourraient encore être disposés horizontalement ou bien selon une inclinaison quelconque, la direction verticale étant la direction préférée pour l'échangeur intérieur monté dans le boîtier de l'installation de ventilation du véhicule. La direction verticale ou horizontale d'un élément, en particulier les tubes, se détermine au regard de la position que l'échangeur peut prendre une fois installé sur le véhicule, une tel position pouvant être évaluée sans nécessairement disposé l'échangeur dans le véhicule.It should be noted that the
Les tubes 2 sont répartis en une première rangée 3A et une seconde rangée 3B parallèles entre elles et disposées l'une derrière l'autre selon la direction transversale y. Ainsi, chaque rangée de tubes 3A, 3B comprend une pluralité de tubes 2 régulièrement répartis selon la direction longitudinale x.The
L'échangeur de chaleur 1 comprend également une première et une seconde boîtes collectrices 4 et 5 - de forme allongée selon la direction longitudinale x - à l'intérieur desquelles débouchent les tubes 2 de chacune desdites rangées 3A et 3B. Les deux extrémités longitudinales des tubes 2 sont donc reçues respectivement dans la première boîte collectrice 4 et dans la seconde boîte collectrice 5.The heat exchanger 1 also comprises a first and a
Les première et seconde boîtes collectrices 4 et 5 comportent chacune une plaque de fond 6, 7 et un couvercle 8, 9 rapporté sur cette dernière.The first and
La plaque de fond 6, 7 et le couvercle 8, 9 de chacune des boîtes collectrices 4, 5, présentent une forme rectangulaire et s'étendent, en longueur, selon la direction longitudinale x et, en largeur, selon la direction transversale y.The
Chaque plaque de fond 6, 7, formée en matériau métallique, comporte une face plane de contact 6A, 7A - contre laquelle est monté le couvercle 8, 9 correspondant - qui est percée d'une pluralité d'orifices traversants 10 répartis selon une première et une seconde rangées parallèles s'étendant suivant la direction longitudinale x.Each
La section des orifices 10 correspond à la section transversale externe des tubes 2, de sorte que l'extrémité longitudinale de chacun des tubes 2 puisse traverser, au moins en partie, l'orifice 10 correspondant de la plaque de fond 6, 7.The section of the
En outre, le contour de chacun des orifices 10 des plaques de fond 6 et 7 est surmonté d'un collet externe 11 - dont la section interne est sensiblement identique à celle de l'orifice 10 qu'il prolonge - pour assurer une fixation de qualité du tube 2 correspondant. Chaque collet 11 s'étend, selon la direction verticale z, à l'extérieur de la boîte collectrice correspondante 4, 5.In addition, the contour of each of the
De plus, chaque plaque de fond 6, 7 comporte une pluralité de pattes d'accrochage 12 - régulièrement réparties le long de ses bords latéraux - qui sont rabattues sur les bords latéraux du couvercle 8, 9 correspondant.In addition, each
Par ailleurs, le couvercle 8 de la première boîte collectrice 4 présente un premier et un second évidements longitudinaux 13 et 14, autrement appelés déformation longitudinale - parallèles l'un à l'autre - qui s'étendent dans la direction longitudinale x. Les deux évidements adjacents 13 et 14 présentent une section transversale de forme semi-circulaire.On the other hand, the
Les évidements longitudinaux 13 et 14 peuvent être réalisés par emboutissage d'une plaque de métal 15 qui, une fois emboutie, forme le couvercle 8 de la première boîte collectrice 4.The longitudinal recesses 13 and 14 can be made by stamping a
Le premier évidement longitudinal 13 est séparé du second évidement longitudinal 14 par une cloison longitudinale de séparation 16, s'étendant suivant la direction x. En particulier, cette cloison longitudinale 16 est formée par une portion de la plaque de métal 15 maintenue en contact étanche avec la plaque de fond correspondante, par exemple par brasage. Autrement dit, la cloison longitudinale de séparation 16 correspond à une portion longitudinale non emboutie de la plaque de métal 15, formant le couvercle 8.The first
Ainsi, lorsque le couvercle 8 de la première boîte collectrice 4 est solidarisé à la plaque de fond 6 correspondante, les premier et second évidements longitudinaux 13 et 14 définissent respectivement un compartiment d'entrée de fluide réfrigérant 17, dans lequel débouchent les tubes 2 de la première rangée 3A, et un compartiment de sortie de fluide réfrigérant 18, adjacent au compartiment d'entrée 17, dans lequel débouchent les tubes 2 de la seconde rangée 3B. Autrement dit, les orifices 10 de la première rangée de la plaque de fond 6 débouchent dans le compartiment d'entrée 17, alors que ceux de la seconde rangée débouchent dans le compartiment de sortie 18.Thus, when the
Une des extrémités longitudinales des premier et second évidements 13 et 14 est ouverte et débouche dans une des extrémités longitudinales du couvercle 8, l'extrémité longitudinale opposée étant fermée par une cloison transversale 19 formée par une portion non emboutie de la plaque de métal 15 en contact étanche avec la plaque de fond 6.One of the longitudinal ends of the first and
Par ailleurs, la plaque de fond 6 de la première boîte collectrice 4 comporte deux gouttières, autrement appelées déformation semi-circulaire 20, disposées respectivement en regard des extrémités longitudinales des compartiments d'entrée 17 et de sortie 18. Chacune des déformations semi-circulaires 20, par exemple réalisée par emboutissage de la plaque de fond 6, s'étend longitudinalement sur une portion réduite de cette dernière et présente une section transversale de forme semi-circulaire dont le diamètre interne est identique à celui des évidements longitudinaux 13 et 14.Furthermore, the
Ainsi, lorsque la plaque de fond 6 et le couvercle 8 de la première boîte collectrice 4 sont assemblés l'un à l'autre, les évidements longitudinaux 13 et 14 se retrouvent respectivement en regard des déformations semi-circulaires 20, de manière à délimiter un canal d'entrée 21 ou de sortie 22 de fluide réfrigérant à sections transversales interne et externe circulaires.Thus, when the
En outre, l'échangeur de chaleur 1 comprend une tubulure 23 d'entrée de fluide réfrigérant et une tubulure 24 de sortie de fluide réfrigérant en communication fluidique respectivement avec le compartiment d'entrée 17 et le compartiment de sortie 18, afin de permettre un raccordement de l'échangeur de chaleur 1 au circuit de fluide réfrigérant. Les tubulures d'entrée 23 et de sortie 24 comportent chacune une jupe latérale 23A, 24A rapportée sur une face extérieure des canaux d'entrée 21 et de sortie 22 de la première boîte collectrice 4, à une de ses extrémités longitudinales. On comprend ainsi que la jupe latérale 23A, 23B présente un diamètre interne égal au diamètre externe de l'ensemble formé par l'évidement longitudinal 13, 14 accolé ou rapproché de la déformation semi-circulaire 20 concernée.In addition, the heat exchanger 1 comprises a
Comme le montre schématiquement la
Par ailleurs, le couvercle 9 de la seconde boîte collectrice 5 présente une pluralité d'évidements transversaux 25 identiques - parallèles les uns aux autres - qui s'étendent dans la direction transversale y. Les évidements transversaux 25 présentent une section transversale de forme sensiblement semi-circulaire. Ils peuvent être réalisés par emboutissage d'une plaque de métal 26 qui, une fois emboutie, forme le couvercle 9 de la seconde boîte collectrice 5.On the other hand, the
En outre, les évidements transversaux 25 sont séparés les uns des autres par des cloisons transversales de séparation 27, s'étendant suivant la direction y. En particulier, chaque cloison transversale 27 est formée par une portion de la plaque de métal 26 maintenue en contact étanche avec la plaque de fond 7 correspondante. En d'autres termes, les cloisons transversales de séparation 27 correspondent chacune à une portion longitudinale non emboutie de la plaque de métal 26 qui forme le couvercle 9.In addition, the
Une fois le couvercle 9 de la seconde boîte collectrice 5 fixé sur la plaque de fond 7 associée, les évidements transversaux 25 définissent des compartiments de retournement 28 de fluide réfrigérant, dans lequel débouchent deux tubes 2 de la première rangée 3A ainsi que deux tubes 2 de la seconde rangée 3B. Il va de soi que le nombre de tubes 2 de la première rangée 3A et de la seconde rangée 3B débouchant dans chaque compartiment de retournement 28 peut être inférieur ou supérieur à deux.Once the
Chaque compartiment de retournement 28 est dépourvu de communication fluidique avec le ou les compartiments de retournement 28 adjacents.Each
Ainsi, chaque compartiment de retournement 28 met en communication fluidique deux tubes 2 de la première rangée 3A avec les deux tubes 2 en regard de la seconde rangée 3B. La section des compartiments de retournement 28 est avantageusement déterminée de telle façon que les pertes de charges du fluide parcourant l'échangeur de chaleur 1 soient minimisées.Thus, each turning
Par ailleurs, l'échangeur de chaleur 1 comporte également des intercalaires ondulés 29 formés d'une pluralité d'ailettes d'échange de chaleur. Chaque intercalaire ondulé 29 est disposé entre deux tubes 2 adjacents de la première rangée 3A et se prolonge entre les deux tubes 2 adjacents en regard appartenant à la seconde rangée 3B. Un contact par brasage est maintenu entre l'intercalaire ondulé 29 et les tubes correspondants 2 qui l'encadrent pour faciliter l'échange thermique.Furthermore, the heat exchanger 1 also comprises corrugated
Par exception, les intercalaires 29 disposés aux extrémités du faisceau de tubes 2 sont en contact avec un seul tube 2 de la première rangée 3A et de la seconde rangée 3B et avec une plaque d'extrémité 30 assurant une rigidification de la structure de l'échangeur de chaleur 1.By way of exception, the
Grâce à l'invention, le fluide réfrigérant circulant dans l'échangeur de chaleur 1 est distribué uniformément dans les tubes 2 de la première rangée 3A par l'intermédiaire du compartiment d'entrée 17, après avoir été introduit dans celui-ci par la tubulure d'entrée 23, comme le représente symboliquement la flèche F1.Thanks to the invention, the refrigerant circulating in the heat exchanger 1 is uniformly distributed in the
Une fois la traversée des tubes 2 de la première rangée 3A achevée, le fluide réfrigérant est guidé dans les tubes 2 de la seconde rangée 3B par l'intermédiaire des compartiments de retournement 28 correspondants.Once the crossing of the
Le fluide réfrigérant transite alors par les tubes 2 de la seconde rangée 3B pour aboutir dans le compartiment de sortie 18 par lequel il est finalement évacué à l'extérieur de l'échangeur de chaleur 1, après avoir traversé la tubulure de sortie 24, comme l'illustre la flèche F2.The refrigerant then passes through the
Autrement dit, selon l'invention, la circulation du fluide réfrigérant au sein de l'échangeur de chaleur 1 est une circulation à deux passes, la première passe correspondant à la traversée de la première rangée de tube 3A, la seconde passe correspondant à la traversée de la seconde rangée 3B, l'air représenté de façon symbolique par la flèche G traversant dans l'ordre la seconde rangée de tubes 3B puis la première rangée de tubes 3A. Ainsi faisant, on limite les pertes de charges internes, notamment en comparaison d'un échangeur de chaleur à quatre passes, tout en maintenant une uniformité de température sur la face frontale de l'échangeur qui le rend compatible et exploitable pour un montage dans un boîtier d'une installation de ventilation pour véhicule.In other words, according to the invention, the circulation of the refrigerant fluid in the heat exchanger 1 is a two-pass circulation, the first pass corresponding to the crossing of the first row of
Avantageusement, l'échangeur de chaleur 1 comprend des moyens de fixation (non représentés sur les figures) qui permettent, une fois l'échangeur de chaleur installé dans un boîtier d'une installation de ventilation, chauffage et/ou climatisation, un maintien vertical de ses tubes.Advantageously, the heat exchanger 1 comprises fastening means (not shown in the figures) which, once the heat exchanger installed in a housing of a ventilation system, heating and / or air conditioning, a vertical holding of his tubes.
Claims (11)
- Heat exchanger comprising:- a plurality of tubes (2), arranged in a first and a second row (3A, 3B), and through which a refrigerant is intended to circulate;- a first and a second header tank (4, 5) inside which tanks the tubes (2) of each of the said rows emerge;- a longitudinal dividing partition (16) arranged in the first header tank (4) to divide it longitudinally into:▪ a refrigerant inlet compartment (17) into which the tubes of the first row (3A) emerge; and▪ a refrigerant outlet compartment (18) into which the tubes of the second row (3B) emerge,- a plurality of transverse dividing partitions (27) arranged in the second header tank (5) to divide it transversely into a plurality of return compartments (28) into which at least one tube of the first row (3A) and one tube of the second row (3B) emerge,- the first and second header tanks (4, 5) each comprising a bottom plate (6, 7) comprising a plurality of orifices (10) that accept the corresponding tubes (2), and a cover (8, 9) attached to the said bottom plate, the cover (8) of the first header tank (4) taking the form of a pressed metal plate (15) defining the inlet compartment (17) and the outlet compartment (18),
characterized in that:- the bottom plate (6) of the first header tank (4) comprises two semicircular deformations (20) arranged respectively facing the longitudinal ends of the inlet and outlet compartments (17, 18); and- the bottom (20A) of the semicircular deformations is connected to the face (6A) of the bottom plate (6) that faces towards the cover (8) by an intermediate connecting zone (20B) which, in axial section, has a predetermined curvature comprising a point of inflection (0). - Heat exchanger according to the preceding claim, in which the return compartments (28) have identical dimensions to one another.
- Heat exchanger according to either one of Claims 1 and 2, in which a portion of the said metal plate (15) is in sealed contact with the corresponding bottom plate (6) to form the longitudinal dividing partition (16).
- Heat exchanger according to any one of Claims 1 to 3, in which the contour of each of the orifices (10) in the bottom plate (6, 7) is surmounted by an external collar (11) for securing the corresponding tube (2).
- Heat exchanger according to Claims 1 to 4, in which the cover (9) of the second header tank (5) takes the form of a pressed metal plate (26) defining the return compartments (28).
- Heat exchanger according to the preceding claim, in which portions of the said metal plate (26) are in sealed contact with the corresponding bottom plate (7) to form the transverse dividing partitions (27).
- Heat exchanger according to one of the preceding claims, comprising a refrigerant inlet nozzle (23) and a refrigerant outlet nozzle (24) which are respectively in fluidic communication with the inlet compartment (17) and the outlet compartment (18), the inlet (17) and outlet (18) nozzles each comprising a lateral skirt (23A, 24A) attached to an exterior face of the first header tank (4).
- Heat exchanger according to one of the preceding claims, comprising corrugated separators (29) arranged in such a way that each separator is intercalated between two adjacent tubes (2) of the first row (3A) and extends between the two adjacent tubes (2) belonging to the second row (3B).
- Heat exchanger according to one of the preceding claims, in which the tubes of the first and second rows extend in the vertical direction.
- Housing of a heating, ventilation and/or air conditioning installation for a motor vehicle interior, comprising a heat exchanger (1) as specified in one of Claims 1 to 9.
- Air conditioning circuit through which there circulates a refrigerant, comprising at least a compressor, an external heat exchanger, an evaporator and an internal heat exchanger (1) as specified in one of Claims 1 to 9.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1101980A FR2977304B1 (en) | 2011-06-28 | 2011-06-28 | HEAT EXCHANGER, HOUSING AND AIR CONDITIONING CIRCUIT COMPRISING SUCH AN EXCHANGER |
PCT/EP2012/062597 WO2013001019A1 (en) | 2011-06-28 | 2012-06-28 | Heat exchanger, housing, and air-conditioning circuit including such an exchanger |
Publications (2)
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EP2726808A1 EP2726808A1 (en) | 2014-05-07 |
EP2726808B1 true EP2726808B1 (en) | 2016-07-06 |
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EP12731421.9A Active EP2726808B1 (en) | 2011-06-28 | 2012-06-28 | Heat exchanger, housing, and air-conditioning circuit including such an exchanger |
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US (1) | US9958218B2 (en) |
EP (1) | EP2726808B1 (en) |
JP (1) | JP6310386B2 (en) |
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FR (1) | FR2977304B1 (en) |
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WO (1) | WO2013001019A1 (en) |
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JP6333401B2 (en) * | 2014-10-07 | 2018-05-30 | 三菱電機株式会社 | Heat exchanger and air conditioner |
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JP6746234B2 (en) * | 2017-01-25 | 2020-08-26 | 日立ジョンソンコントロールズ空調株式会社 | Heat exchanger and air conditioner |
WO2019115885A1 (en) * | 2017-12-12 | 2019-06-20 | Valeo Systemes Thermiques | Heat exchanger, in particular an evaporator, provided with a connection device for introducing and extracting a heat transfer fluid |
WO2019244408A1 (en) * | 2018-06-19 | 2019-12-26 | シャープ株式会社 | Heat exchanger and air conditioner |
EP3690377A1 (en) * | 2019-01-29 | 2020-08-05 | Valeo Systemes Thermiques-THS | Heat exchanger, housing and air conditioning circuit comprising such an exchanger |
EP4317895A1 (en) * | 2022-08-02 | 2024-02-07 | Valeo Systemes Thermiques | A tank assembly |
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-
2012
- 2012-06-28 WO PCT/EP2012/062597 patent/WO2013001019A1/en active Application Filing
- 2012-06-28 MX MX2014000109A patent/MX345509B/en active IP Right Grant
- 2012-06-28 EP EP12731421.9A patent/EP2726808B1/en active Active
- 2012-06-28 JP JP2014517709A patent/JP6310386B2/en active Active
- 2012-06-28 ES ES12731421.9T patent/ES2588762T3/en active Active
- 2012-06-28 US US14/128,647 patent/US9958218B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
MX2014000109A (en) | 2014-02-17 |
WO2013001019A1 (en) | 2013-01-03 |
JP6310386B2 (en) | 2018-04-11 |
MX345509B (en) | 2017-02-01 |
FR2977304B1 (en) | 2013-07-19 |
JP2014518370A (en) | 2014-07-28 |
ES2588762T3 (en) | 2016-11-04 |
US20140224461A1 (en) | 2014-08-14 |
US9958218B2 (en) | 2018-05-01 |
EP2726808A1 (en) | 2014-05-07 |
FR2977304A1 (en) | 2013-01-04 |
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