EP2936033A1 - Heat exchanger for exchanging heat between a heat transfer liquid and a refrigerant, in particular for a motor vehicle - Google Patents

Heat exchanger for exchanging heat between a heat transfer liquid and a refrigerant, in particular for a motor vehicle

Info

Publication number
EP2936033A1
EP2936033A1 EP13805858.1A EP13805858A EP2936033A1 EP 2936033 A1 EP2936033 A1 EP 2936033A1 EP 13805858 A EP13805858 A EP 13805858A EP 2936033 A1 EP2936033 A1 EP 2936033A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
exchanger according
blades
heat
exchanger
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.)
Withdrawn
Application number
EP13805858.1A
Other languages
German (de)
French (fr)
Inventor
Christophe Denoual
Alain Pourmarin
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 EP2936033A1 publication Critical patent/EP2936033A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/067—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • Heat exchanger between a coolant and a coolant especially for a motor vehicle
  • the invention relates to an exchanger between a coolant and a coolant. It is more particularly intended to allow a heating and / or cooling of said heat transfer liquid depending on the state of said refrigerant.
  • a first solution is to use electric heaters powered by the vehicle battery but this reduces its autonomy.
  • Another solution is to operate the air conditioning circuit of the vehicle heat pump.
  • the refrigerant flowing through said circuit is used to pass calories from the outside of the vehicle to the inside thereof.
  • exchangers for exchanging between the refrigerant and a coolant. The latter is then used to heat the passenger compartment of the vehicle.
  • Such types of exchanger are in the form of brazed exchangers in which the refrigerant circulation channels and heat transfer liquid circulation channels are alternately defined by stacked plates.
  • Such a configuration has advantages but is complex because of the number of components used.
  • the brazed nature of the exchanger limits the possibilities of positioning the inlet and / or outlet flanges of the fluids circulating in the exchanger as well as the fixing flanges of the exchanger so that its integration into the vehicle is made complex. External corrosion phenomena are also observed.
  • the invention aims to overcome the aforementioned drawbacks and proposes in this sense a heat exchanger between a coolant and a fluid refrigerant, in particular for a motor vehicle, said exchanger comprising a housing and a refrigerant circulation block, defining the circulation blades of said refrigerant superimposed in a stacking direction, said block being disposed in said housing, said exchanger being configured to defining a passage circuit of said heat transfer liquid in said housing between said blades so as to allow a heat exchange between the coolant and the refrigerant.
  • the number of components is limited since it is no longer necessary to provide a plurality of plates for the corresponding circuit. It also increases the possibilities of integration of the fluid inlet and / or outlet interfaces as well as fixing flanges that can be reported or derived from material of the housing.
  • said housing is configured to guide said block during assembly of the exchanger
  • said housing comprises first and second parts defining an internal volume within which said cooling fluid circulation blades are located,
  • said first part is formed of a box and said second part is formed by a closure lid of said box,
  • said closure lid comprises a groove and said box is fixed in said groove, said box comprises inlet and / or outlet pipes for the heat-transfer liquid and / or said lid comprises passage orifices for said refrigerant,
  • said inlet and / or outlet manifolds are made from material of said box, said exchanger comprises fastening flanges issuing from said box and / or said lid,
  • said first and second parts are each formed of a shell, said shells being assembled to one another,
  • said shells are assembled in a direction perpendicular to said stacking direction
  • said block comprises an inlet and / or outlet window for the refrigerant in a direction substantially orthogonal to said stacking direction,
  • each of said shells comprises a raised edge for assembly with the other of said shells by means of at least one fastening flange
  • one of the parts comprises inlet and / or outlet pipes for the heat-transfer fluid and / or the other of the parts comprises inlet and / or outlet pipes for the refrigerant,
  • said inlet and / or outlet manifolds are made from the material of said shells
  • said box and / or said shells are made of plastic material and / or said lid is made of metallic material
  • said housing comprises at least one partition intended to circulate said heat-transfer liquid in several passes and / or layers,
  • said blades extend in a longitudinal direction perpendicular to the stacking direction
  • said block comprises collectors for the refrigerant, located at a longitudinal end edge of the blades, said blade heads,
  • said block comprises plates, stacked in said stacking direction, said plates being associated in pairs to define said refrigerant circulation blades, said block comprises fluid connections between the plates of the pairs of plates situated at the level of said blade heads, so as to form said collectors,
  • said fluid connections comprise stampings coming from said plates, said stampings coming into contact with stampings of the plate opposite the neighboring pair of plates for the circulation of the refrigerant,
  • said block is provided with first turbulators between said pairs of plates,
  • said block is provided with second turbulators between the plates of the same pair of plates,
  • said block has an open lateral face between said blades on the longitudinal end side of said blades opposite that provided with said collectors,
  • said blades are configured to make a U-shaped circuit to the fluid between a first of said collectors and a second one of said collectors.
  • Figure 1 is a sectional view of a first embodiment of a heat exchanger according to the invention.
  • Figure 2 is a sectional view of a second embodiment of a heat exchanger according to the invention.
  • FIG. 3 is a side view of a fluid circulation block that can be used in the exchanger of FIGS. 1 and 2;
  • Figure 4 is a perspective view of a plate of the circulation block of Figure 3;
  • Figure 5 is a sectional view partially illustrating an alternative embodiment according to the invention of the exchanger of Figure 1;
  • Figure 6 is a sectional view partially illustrating an alternative embodiment according to the invention of the exchanger of Figure 2;
  • Figure 7 is a sectional view of a third embodiment of a heat exchanger according to the invention.
  • FIG. 8 is a perspective view of the exchanger of FIG.
  • the invention relates to a heat exchanger between a coolant and a coolant, in particular for a motor vehicle.
  • Said exchanger may in particular be used as a heating radiator and / or cooling said heat transfer liquid, depending on the state of said refrigerant.
  • Said heat transfer fluid is, for example, water, in particular glycol water.
  • Said coolant is, for example, the fluid known under the name R134a or R1234yf. Other applications are however possible.
  • Said heat exchanger comprises a casing 1 and a block 2 for circulating the refrigerant fluid.
  • Said block 2 defines blades 3 for circulating said refrigerant superimposed in a stacking direction D. In FIG. 2, said block 2 is partially illustrated. The refrigerant circulation is effected here according to the arrows marked 4.
  • Said block 2 is disposed in said housing 1.
  • said device is configured to define a passage circuit for said heat transfer liquid, according to the arrows marked 5, in said housing 1 between said blades 3 so as to allow a heat exchange between the coolant and the refrigerant.
  • the refrigerant circulates in the block 2 which is bathed by the coolant circulating in the housing 2.
  • Said block 1 is formed, for example, of aluminum components and / or aluminum alloy. It may be assembled, for example, by brazing said components.
  • Said blades 3 extend here in a longitudinal direction L, perpendicular to the stacking direction D.
  • Said block 2 may comprise collectors 6 for the circulation of the refrigerant in said blades 3.
  • Said collectors 6 are located, for example, at a longitudinal end edge 7 of the blades 3, said blade head.
  • Said blades 3 are configured here to make a U-shaped circuit to said fluid between a first and a second of said collectors 6.
  • the first collector 6 thus constitutes an inlet manifold for the fluid while the second collector constitutes a collector of output of said fluid.
  • the fluid flows in the block 2 being distributed by the inlet manifold 6 in the blades 3 where it follows the U-shaped circuit mentioned above to then enter the outlet manifold 6.
  • said block 2 here comprises plates 10 stacked in said stacking direction D, said plates 10 being associated in pairs to define said blades 3 serving for the circulation of the refrigerant.
  • said blades may be defined by extruded tubes, bent tubes or any other means for guiding a fluid. Said pairs of plates 10 are advantageously identical to each other.
  • Said heat exchanger comprises fluid connections 12 between plates 10 of pairs of plates located at said plate heads 7, so as to form said collectors 6.
  • Said fluid connections 12 comprise, for example, stampings 14 issuing from said plates 10, said stampings 14 coming into contact with stampings 14 of the plate opposite the neighboring pair of plates 10.
  • the said stamps 14 are provided with port 16 for fluid passage.
  • the said stamps 14 thus enable the circulation of fluid from one pair of plates to the other by matching said orifices 16.
  • the said stamps 14 of the same manifold 6 are here located in the axial extension of each other. so that said collectors 6 are substantially rectilinear.
  • Said plates 10 comprise a longitudinal end edge 18, said distal, opposite a longitudinal end edge 20 of said plates at which said fluid connections 12 are located.
  • Said plates 10 comprise a bottom 22, a raised edge 24 and a brazing lip 26.
  • Said pair of plates are formed by two of said plates 10, provided identical, mounted head to tail so that their lip 26 are in contact.
  • Each of said pairs of plates 10 comprises a conduit for the circulation U of the fluid, between said collectors 6.
  • Said blades 10 may comprise a disrupter 28 of the refrigerant flow.
  • said disruptors define longitudinal channels for circulating said fluid.
  • said disrupters are localized deformations on at least one of the plates delimiting a fluid circulation duct.
  • Such deformations are preferably stampings made in concomitance with stampings 14 partially defining said fluid connections 12.
  • the desired U-shaped circulation is obtained by a stamped form of the bottom of the plates such as a central partial rib starting from longitudinal end edges provided with the stampings 14 of connection.
  • the inlet manifolds 6 open towards a first part of the channels of the disrupters 28 while the outlet manifold opens in opposite of a second part of the channels, separated from said first part of the channels by one or more central channels 30.
  • said plates 10 comprise locking stampings 32, between the connecting pieces 14, closing the said central channel (s) 30 to one of their longitudinal ends.
  • Said disruptors 28 are advantageously shorter than the bottom
  • Said block 2 may be provided with turbulators 100 between said pairs of plates 10, said turbulators 100 being intended to be traversed by said heat transfer liquid.
  • Said block 2 has internal heights of blades 3, for example from 1 to 1.5 mm for the circulation of the refrigerant and / or heights between pairs blades 3, for example, between 2 and 4 mm for the circulation of the booster liquid.
  • Said block 2 has a lateral face 34 open between said blades 3, on the longitudinal end side of said blades opposite that provided with said collectors 6.
  • said housing 1 comprises a first 40 and a second 42 portions defining an interior volume 44 inside which said refrigerant circulation blades 3 are located. This facilitates the assembly of the block 2. Said housing 1 may in this regard be configured to guide said block 2 during assembly of the exchanger.
  • said first portion 40 is formed of a box and said second portion 42 is formed of a closure lid of said box.
  • Said box 40 is, for example, plastic material, and / or said lid 42 is, for example, metal material, including aluminum and / or aluminum alloy.
  • Said closure cover 42 here comprises a groove 46 and said box 40 is fixed in said groove 46.
  • Said housing 1 may further comprise a seal 48, located in said groove 46.
  • Said box 40 advantageously has a box foot 50 along an edge of said box 40, said gasket 48 being compressed in said groove 46 by said box foot 50.
  • Said cover 42 is, for example, crimped on said box 40, here by crimping teeth 52 cooperating with said foot of box 50.
  • Said box 40 comprises, for example, inlet and / or outlet pipes 54 for the heat transfer liquid.
  • Said inlet and / or outlet pipes 54 are advantageously made from material of said box 40.
  • Said cover 42 comprises on its side orifices 56 for passage for said refrigerant.
  • Said passage orifices are located, for example, at the level of stampings 60 made in said cover to come into contact with said collectors 6 of the block 2 so that the refrigerant circulates in a cavity 62 defined by said stampings 60 of cover 42 by entering or leaving said manifolds 6.
  • Said exchanger further comprises here a flange 58 inlet and / or outlet of refrigerant fixed on the cover 42 in screws of the through openings 56 and cavities 62.
  • Said housing 1 may further comprise fixing flanges 63, 64 on said box 40 and / or on said cover 42, advantageously derived from material thereof.
  • Such a housing 1 is illustrated externally in FIG. 8.
  • Figure 5 illustrates an embodiment similar to the difference of the orientation of at least one of the inlet / outlet pipes 54 of the liquid.
  • the tubing or pipes 54 come from a face of the box 40 opposite to the cover 42, while moving away from said cover 42 whereas in FIG. 5, the tubing or pipes 54 form a bend 55 in approaching said lid 42.
  • said first and second parts are each formed of a shell 40, 42, said shells being assembled to one another.
  • Said shells 40, 42 are, for example, made of plastic material.
  • Each of said shells 40, 42 here comprises a raised edge 70 for assembly with the other of said shells. Said raised edges 70 are assembled against each other, for example, in plane-to-plane contact.
  • Said shells 40, 42 are assembled to one another, for example by gluing, saddling and / or welding, in particular ultrasound. They may also be assembled by means of clamps 72, a seal 74 being provided between said shells 40, 42, here between their raised edge 70.
  • One of the shells comprises inlet and / or outlet nozzles 76 for the heat transfer fluid and / or the other shell 42 comprises inlet and / or outlet pipes 78 for the refrigerant, advantageously derived from material of said shells.
  • Said exchanger may further comprise flanges 80 for connection to the block 2, in particular at an axial end of said collectors 6, for the circulation of the refrigerant.
  • Said flanges 80 for connection to the block 2 are positioned in said corresponding inlet / outlet pipes 78, if necessary by means of a seal 82 ensuring a seal between the internal volume 44 of the housing 1 and a pipe 84 defined by said pipes. 78 inlet / outlet of the fluid.
  • Said flanges 80 for connection to block 2 establish a communication fluid tight between said conduits 84 and said block 2.
  • the said manifolds 78 of fluid inlet / outlet may further accommodate means 86 for quick connection.
  • the inlet and / or outlet pipes 76 for the heat transfer liquid may also accommodate rapid connection means (not shown).
  • said shells 40, 42 are assembled in said stacking direction D.
  • the contact plane of the raised edges 70 is orthogonal to said stacking direction D.
  • the introduction of the refrigerant in block 2 is carried out in a direction parallel to said stacking direction.
  • said shells 40, 42 are assembled in a direction perpendicular to said stacking direction.
  • the contact plane of the raised edges 70 is parallel to said stacking direction D.
  • the introduction of the refrigerant into the block 2 is performed in a direction orthogonal to said stacking direction.
  • Said block 2 here comprises a window 90 for entering and / or leaving the refrigerant in a direction substantially orthogonal to said stacking direction D, at one and / or the other of said manifolds 6, plus precisely stampings 14 of the blades 10 of the same pair of blades.
  • a connection with said fluid inlet / outlet manifolds 78 is established, for example, according to a solution similar to that of the embodiment of FIG. 2 using a connection flange 92.
  • Said tubing 78 of FIGS. fluid inlet / outlet are here bent.
  • said shells 40, 42 are assembled to one another, for example, at the interface zones between the blade heads and a heat exchange part of said blades 10.
  • said housing 1 is configured to circulate said heat transfer liquid in several passes. It may thus comprise a partition 102 to ensure a U-shaped circulation of the coolant between the pipes 54, 76 for entering and leaving the coolant. The latter will be advantageously against the current flow U organized in the blades 3 of block 2.
  • FIG. 7 shows an example of a housing 1 allowing a circulation in several plies and, in each ply, in several passes thanks to different partitions 104 formed in a wall of said housing 1.

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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)

Abstract

The invention relates to a heat exchanger for exchanging heat between a heat transfer liquid and a refrigerant, in particular for a motor vehicle, said heat exchanger comprising a housing (1) and a unit (2) for circulating the refrigerant, said unit defining blades (3), for circulating said refrigerant, stacked in a stacking direction, and said unit (2) being arranged in said housing (1), wherein said device is configured to define a circuit for the flow of said heat transfer liquid in said housing (1) between said blades (3), such that heat exchange can take place between the heat transfer liquid and the refrigerant.

Description

Echangeur de chaleur entre un liquide caloporteur et un fluide réfrigérant, notamment pour véhicule automobile  Heat exchanger between a coolant and a coolant, especially for a motor vehicle
L'invention concerne un échangeur entre un liquide caloporteur et un fluide réfrigérant. Elle est plus particulièrement destinée à permettre un réchauffage et/ou un refroidissement dudit liquide caloporteur en fonction de l'état dudit fluide frigorigène. The invention relates to an exchanger between a coolant and a coolant. It is more particularly intended to allow a heating and / or cooling of said heat transfer liquid depending on the state of said refrigerant.
Dans le domaine automobile, lorsque les véhicules ont une motorisation thermique, il est traditionnel d'utiliser les calories dégagées par le moteur pour chauffer l'habitacle. Dans les véhicules à motorisation hybride et/ou électrique, on sait que les calories dégagées par le moteur sont parfois insuffisantes et il est nécessaire de trouver des solutions alternatives pour le chauffage de l'habitacle.  In the automotive field, when the vehicles have a thermal engine, it is traditional to use the calories released by the engine to heat the cabin. In vehicles with hybrid and / or electric drive, it is known that the calories released by the engine are sometimes insufficient and it is necessary to find alternative solutions for the heating of the passenger compartment.
Une première solution est d'utiliser des radiateurs électriques alimenté par la batterie du véhicule mais ceci diminue son autonomie.  A first solution is to use electric heaters powered by the vehicle battery but this reduces its autonomy.
Une autre solution est de faire fonctionner le circuit de climatisation du véhicule en pompe à chaleur. Autrement dit, on se sert du fluide frigorigène parcourant ledit circuit pour faire passer des calories de l'extérieur du véhicule vers l'intérieur de celui-ci. Il est connu dans ce cadre d'utiliser des échangeurs permettant de réaliser un échange entre le fluide frigorigène et un liquide caloporteur. Ce dernier est alors utilisé pour chauffer l'habitacle du véhicule.  Another solution is to operate the air conditioning circuit of the vehicle heat pump. In other words, the refrigerant flowing through said circuit is used to pass calories from the outside of the vehicle to the inside thereof. It is known in this context to use exchangers for exchanging between the refrigerant and a coolant. The latter is then used to heat the passenger compartment of the vehicle.
De tels types d'échangeur se présentent sous la forme d'échangeurs brasés dans lesquels des canaux de circulation du fluide frigorigène et des canaux de circulation du liquide caloporteur sont alternativement définies par des plaques empilées.  Such types of exchanger are in the form of brazed exchangers in which the refrigerant circulation channels and heat transfer liquid circulation channels are alternately defined by stacked plates.
Une telle configuration présente des avantages mais se révèle complexe en raison du nombre de composants utilisés. En outre, le caractère brasé de l'échangeur limite les possibilités de positionnement des brides d'entrée et/ou sortie des fluides circulant dans l'échangeur ainsi que des brides de fixation de l'échangeur de sorte que son intégration dans le véhicule est rendue complexe. On observe également des phénomènes de corrosion externe.  Such a configuration has advantages but is complex because of the number of components used. In addition, the brazed nature of the exchanger limits the possibilities of positioning the inlet and / or outlet flanges of the fluids circulating in the exchanger as well as the fixing flanges of the exchanger so that its integration into the vehicle is made complex. External corrosion phenomena are also observed.
L'invention a pour but de pallier les inconvénients précités et propose en ce sens un échangeur de chaleur entre un liquide caloporteur et un fluide réfrigérant, notamment pour véhicule automobile, ledit échangeur comprenant un boîtier et un bloc de circulation du fluide réfrigérant, définissant des lames de circulation dudit fluide réfrigérant superposées selon une direction d'empilement, ledit bloc étant disposé dans ledit boîtier, ledit échangeur étant configuré pour définir un circuit de passage dudit liquide caloporteur dans ledit boîtier entre lesdites lames de manière à permettre un échange de chaleur entre le liquide caloporteur et le fluide frigorigène. The invention aims to overcome the aforementioned drawbacks and proposes in this sense a heat exchanger between a coolant and a fluid refrigerant, in particular for a motor vehicle, said exchanger comprising a housing and a refrigerant circulation block, defining the circulation blades of said refrigerant superimposed in a stacking direction, said block being disposed in said housing, said exchanger being configured to defining a passage circuit of said heat transfer liquid in said housing between said blades so as to allow a heat exchange between the coolant and the refrigerant.
En utilisant un tel boîtier pour la circulation du liquide caloporteur, on limite le nombre de composants puisqu'il n'est plus nécessaire de prévoir une pluralité de plaques pour le circuit correspondant. On augmente par ailleurs les possibilités d'intégration des interfaces d'entrée et/ou sortie de fluide ainsi que des brides de fixation qui pourront être rapportées ou issus de matière du boîtier. On pourra d'ailleurs utiliser un bloc standard pour la circulation du fluide frigorigène et un boîtier adaptable aux différentes configurations rencontrées d'un véhicule à l'autre. Ledit boîtier pourra également permettre de mieux résister à la corrosion externe.  By using such a housing for the circulation of the coolant, the number of components is limited since it is no longer necessary to provide a plurality of plates for the corresponding circuit. It also increases the possibilities of integration of the fluid inlet and / or outlet interfaces as well as fixing flanges that can be reported or derived from material of the housing. We can also use a standard block for the circulation of refrigerant and a housing adaptable to different configurations encountered from one vehicle to another. Said housing may also make it possible to better resist external corrosion.
Par ailleurs, le choix de conserver un bloc de circulation pour le fluide frigorigène permet de limiter les risques dus aux conditions sévères de fonctionnement d'un tel fluide, en particulier en termes de pression.  Moreover, the choice to keep a circulation block for the refrigerant makes it possible to limit the risks due to the severe operating conditions of such a fluid, in particular in terms of pressure.
Selon différents modes de réalisation, qui pourront être pris ensemble ou séparément :  According to different embodiments, which can be taken together or separately:
- ledit boîtier est configuré pour guider ledit bloc pendant l'assemblage de l'échangeur,  said housing is configured to guide said block during assembly of the exchanger,
- ledit boîtier comprend une première et une seconde parties définissant un volume intérieur à l'intérieur duquel lesdites lames de circulation du fluide réfrigérant sont situées,  said housing comprises first and second parts defining an internal volume within which said cooling fluid circulation blades are located,
- ladite première partie est formée d'une boîte et ladite seconde partie est formée d'un couvercle de fermeture de ladite boîte,  said first part is formed of a box and said second part is formed by a closure lid of said box,
- ledit couvercle de fermeture comprend une gorge et ladite boîte est fixée dans ladite gorge, - ladite boîte comprend des tubulures d'entrée et/ou de sortie pour le liquide caloporteur et/ou ledit couvercle comprend des orifices de passage pour ledit fluide frigorigène, said closure lid comprises a groove and said box is fixed in said groove, said box comprises inlet and / or outlet pipes for the heat-transfer liquid and / or said lid comprises passage orifices for said refrigerant,
- lesdites tubulures d'entrée et/ou de sortie sont issues de matière de ladite boîte, - ledit échangeur comprend des brides de fixation issues de ladite boîte et/ou dudit couvercle,  said inlet and / or outlet manifolds are made from material of said box, said exchanger comprises fastening flanges issuing from said box and / or said lid,
- lesdites première et seconde parties sont formées chacune d'une coquille, lesdites coquilles étant assemblées l'une à l'autre,  said first and second parts are each formed of a shell, said shells being assembled to one another,
- lesdites coquilles sont assemblées selon ladite direction d'empilement,  said shells are assembled in said stacking direction,
- lesdites coquilles sont assemblées selon une direction perpendiculaire à ladite direction d'empilement, said shells are assembled in a direction perpendicular to said stacking direction,
- ledit bloc comprend une fenêtre d'entrée et/ou de sortie du fluide frigorigène selon une direction sensiblement orthogonale à ladite direction d'empilement, said block comprises an inlet and / or outlet window for the refrigerant in a direction substantially orthogonal to said stacking direction,
- chacune desdites coquilles comprend un bord relevé pour l'assemblage avec l'autre desdites coquilles au moyen d'au moins une bride de fixation, each of said shells comprises a raised edge for assembly with the other of said shells by means of at least one fastening flange,
- l'une des parties comprend des tubulures d'entrée et/ou de sortie pour le liquide caloporteur et/ou l'autre des parties comprend des tubulures d'entrée et/ou sortie pour le fluide frigorigène,  one of the parts comprises inlet and / or outlet pipes for the heat-transfer fluid and / or the other of the parts comprises inlet and / or outlet pipes for the refrigerant,
- lesdites tubulures d'entrées et/ou de sorties sont issues de matière desdites coquilles,  said inlet and / or outlet manifolds are made from the material of said shells,
- ladite boîte et/ou lesdites coquilles sont en matériau plastique et/ou ledit couvercle est en matériau métallique,  said box and / or said shells are made of plastic material and / or said lid is made of metallic material,
- ledit boîtier comprend au moins une cloison destinée à faire circuler ledit liquide caloporteur en plusieurs passes et/ou nappes,  said housing comprises at least one partition intended to circulate said heat-transfer liquid in several passes and / or layers,
- lesdites lames s'étendent selon une direction longitudinale, perpendiculaire à la direction d'empilement, said blades extend in a longitudinal direction perpendicular to the stacking direction,
- ledit bloc comprend des collecteurs pour le fluide frigorigène, situés au niveau d'un bord d'extrémité longitudinale des lames, dit têtes de lame,  said block comprises collectors for the refrigerant, located at a longitudinal end edge of the blades, said blade heads,
- ledit bloc comprend des plaques, empilées selon ladite direction d'empilement, lesdites plaques étant associées par paire pour définir lesdites lames de circulation du fluide frigorigène, - ledit bloc comprend des liaisons de fluide entre les plaques des paires de plaques, situées au niveau desdites têtes de lames, de manière à former lesdits collecteurs, said block comprises plates, stacked in said stacking direction, said plates being associated in pairs to define said refrigerant circulation blades, said block comprises fluid connections between the plates of the pairs of plates situated at the level of said blade heads, so as to form said collectors,
- lesdites liaisons de fluide comprennent des emboutis issus desdites plaques, lesdits emboutis venant au contact des emboutis de la plaque en vis-à-vis de la paire voisine de plaques pour la circulation du fluide frigorigène,  said fluid connections comprise stampings coming from said plates, said stampings coming into contact with stampings of the plate opposite the neighboring pair of plates for the circulation of the refrigerant,
- ledit bloc est muni de premiers turbulateurs entre lesdites paires de plaques, said block is provided with first turbulators between said pairs of plates,
- ledit bloc est muni de seconds turbulateurs entre les plaques d'une même paire de plaques, said block is provided with second turbulators between the plates of the same pair of plates,
- ledit bloc présente une face latérale ouverte entre lesdites lames du côté d'extrémité longitudinale desdites lames opposé à celui muni desdites collecteurs, said block has an open lateral face between said blades on the longitudinal end side of said blades opposite that provided with said collectors,
- lesdites lames sont configurées pour faire faire un circuit en U au fluide entre un premier desdits collecteurs et un second desdits collecteurs. said blades are configured to make a U-shaped circuit to the fluid between a first of said collectors and a second one of said collectors.
Ces caractéristiques et d'autres de la présente invention sont illustrées ci après en référence aux dessins annexés, sur lesquels :  These and other features of the present invention are illustrated below with reference to the accompanying drawings, in which:
La figure 1 est une vue en coupe d'un premier mode de réalisation d'un échangeur de chaleur conforme à l'invention ;  Figure 1 is a sectional view of a first embodiment of a heat exchanger according to the invention;
La figure 2 est une vue en coupe d'un second mode de réalisation d'un échangeur de chaleur conforme à l'invention ;  Figure 2 is a sectional view of a second embodiment of a heat exchanger according to the invention;
La figure 3 est une vue de côté d'un bloc de circulation de fluide pouvant être utilisé dans l'échangeur des figures 1 et 2 ;  FIG. 3 is a side view of a fluid circulation block that can be used in the exchanger of FIGS. 1 and 2;
La figure 4 est une vue en perspective d'une plaque du bloc de circulation de la figure 3 ;  Figure 4 is a perspective view of a plate of the circulation block of Figure 3;
La figure 5 est une vue de coupe illustrant de façon partielle une variante de réalisation, conforme à l'invention, de l'échangeur de la figure 1 ;  Figure 5 is a sectional view partially illustrating an alternative embodiment according to the invention of the exchanger of Figure 1;
La figure 6 est une vue de coupe illustrant de façon partielle une variante de réalisation, conforme à l'invention, de l'échangeur de la figure 2 ;  Figure 6 is a sectional view partially illustrating an alternative embodiment according to the invention of the exchanger of Figure 2;
La figure 7 est une vue de coupe d'un troisième mode de réalisation d'un échangeur de chaleur conforme à l'invention ;  Figure 7 is a sectional view of a third embodiment of a heat exchanger according to the invention;
La figure 8 est une vue en perspective de l'échangeur de la figure 1 .  FIG. 8 is a perspective view of the exchanger of FIG.
Dans la description qui suit, des références identiques sont utilisées pour désigner des éléments analogues ou identiques. Comme illustré aux figures 1 et 2, l'invention concerne un échangeur de chaleur entre un liquide caloporteur et un fluide réfrigérant, notamment pour véhicule automobile. In the following description, identical references are used to designate similar or identical elements. As illustrated in FIGS. 1 and 2, the invention relates to a heat exchanger between a coolant and a coolant, in particular for a motor vehicle.
Ledit échangeur pourra en particulier être utilisé comme radiateur chauffage et/ou de refroidissement dudit liquide caloporteur, en fonction de l'état dudit fluide frigorigène. Ledit liquide caloporteur est, par exemple, de l'eau, notamment de l'eau glycolée. Ledit fluide réfrigérant est, par exemple, le fluide connu sous le nom R134a ou encore R1234yf. D'autres applications sont cependant possibles.  Said exchanger may in particular be used as a heating radiator and / or cooling said heat transfer liquid, depending on the state of said refrigerant. Said heat transfer fluid is, for example, water, in particular glycol water. Said coolant is, for example, the fluid known under the name R134a or R1234yf. Other applications are however possible.
Ledit échangeur comprend un boîtier 1 et un bloc 2 de circulation du fluide réfrigérant. Ledit bloc 2 définit des lames 3 de circulation dudit fluide réfrigérant superposées selon une direction d'empilement D. A la figure 2, ledit bloc 2 est illustré partiellement. La circulation du fluide réfrigérant s'effectue ici selon les flèches repérées 4. Ledit bloc 2 est disposé dans ledit boîtier 1 .  Said heat exchanger comprises a casing 1 and a block 2 for circulating the refrigerant fluid. Said block 2 defines blades 3 for circulating said refrigerant superimposed in a stacking direction D. In FIG. 2, said block 2 is partially illustrated. The refrigerant circulation is effected here according to the arrows marked 4. Said block 2 is disposed in said housing 1.
Selon l'invention, ledit dispositif est configuré pour définir un circuit de passage dudit liquide caloporteur, selon les flèches repérées 5, dans ledit boîtier 1 entre lesdites lames 3 de manière à permettre un échange de chaleur entre le liquide caloporteur et le fluide frigorigène. Autrement dit, le fluide frigorigène circule dans le bloc 2 qui est baigné par le liquide caloporteur circulant dans le boîtier 2.  According to the invention, said device is configured to define a passage circuit for said heat transfer liquid, according to the arrows marked 5, in said housing 1 between said blades 3 so as to allow a heat exchange between the coolant and the refrigerant. In other words, the refrigerant circulates in the block 2 which is bathed by the coolant circulating in the housing 2.
On dispose de la sorte d'une configuration d'échange faisant appel à des composants, à savoir le boîtier 1 pour le liquide caloporteur et le bloc 2 pour le fluide frigorigène, adaptés aux contraintes spécifiques de chacun des fluides. On réalise ainsi un échange de chaleur de façon fiable, sans surcoût. L'utilisation d'un boîtier 2 permettra en outre d'intégrer plus facilement les interfaces de connexion de fluide et/ou d'accrochage de l'échangeur ainsi que de favoriser sa résistance à la corrosion externe.  In this way, an exchange configuration using components is available, namely the casing 1 for the heat transfer liquid and the block 2 for the refrigerant, adapted to the specific constraints of each of the fluids. Thus heat exchange is performed reliably, without additional cost. The use of a housing 2 will also make it easier to integrate the interfaces for fluid connection and / or attachment of the exchanger and to promote its resistance to external corrosion.
Ledit bloc 1 est formé, par exemple, de composants en aluminium et/ou alliage d'aluminium. Il pourra être assemblé, par exemple, par brasage desdits composants.  Said block 1 is formed, for example, of aluminum components and / or aluminum alloy. It may be assembled, for example, by brazing said components.
Lesdites lames 3 s'étendent ici selon une direction longitudinale L, perpendiculaire à la direction d'empilement D. Ledit bloc 2 pourra comprendre des collecteurs 6 pour la circulation du fluide frigorigène dans lesdites lames 3. Lesdits collecteurs 6 sont situés, par exemple, au niveau d'un bord d'extrémité longitudinale 7 des lames 3, dit tête de lame. Said blades 3 extend here in a longitudinal direction L, perpendicular to the stacking direction D. Said block 2 may comprise collectors 6 for the circulation of the refrigerant in said blades 3. Said collectors 6 are located, for example, at a longitudinal end edge 7 of the blades 3, said blade head.
Lesdites lames 3 sont configurées ici pour faire faire un circuit en U audit fluide entre un premier et un second desdits collecteurs 6. Le premier des collecteurs 6 constitue ainsi un collecteur d'entrée pour le fluide tandis que le second des collecteurs constitue un collecteur de sortie dudit fluide. Autrement dit, le fluide circule dans le bloc 2 en étant distribué par le collecteur 6 d'entrée dans les lames 3 où il suit le circuit en U évoqué plus haut pour pénétrer ensuite dans le collecteur 6 de sortie.  Said blades 3 are configured here to make a U-shaped circuit to said fluid between a first and a second of said collectors 6. The first collector 6 thus constitutes an inlet manifold for the fluid while the second collector constitutes a collector of output of said fluid. In other words, the fluid flows in the block 2 being distributed by the inlet manifold 6 in the blades 3 where it follows the U-shaped circuit mentioned above to then enter the outlet manifold 6.
Comme cela ressort mieux aux figures 3 et 4, ledit bloc 2 comprend ici des plaques 10 empilées selon ladite direction d'empilement D, lesdites plaques 10 étant associées par paire pour définir lesdites lames 3 servant à la circulation du fluide frigorigène. Selon d'autres modes de réalisation, lesdites lames pourront être définies par des tubes extrudés, des tubes pliés ou tout autre moyen permettant le guidage d'un fluide. Lesdites paires de plaques 10 sont avantageusement identiques entre elles.  As best shown in FIGS. 3 and 4, said block 2 here comprises plates 10 stacked in said stacking direction D, said plates 10 being associated in pairs to define said blades 3 serving for the circulation of the refrigerant. According to other embodiments, said blades may be defined by extruded tubes, bent tubes or any other means for guiding a fluid. Said pairs of plates 10 are advantageously identical to each other.
Ledit échangeur comprend des liaisons 12 de fluide entre les plaques 10 des paires de plaques, situées au niveau desdites têtes de plaques 7, de manière à former lesdits collecteurs 6.  Said heat exchanger comprises fluid connections 12 between plates 10 of pairs of plates located at said plate heads 7, so as to form said collectors 6.
Lesdites liaisons de fluide 12 comprennent, par exemple, des emboutis 14 issus desdites plaques 10, lesdits emboutis 14 venant au contact des emboutis 14 de la plaque en vis-à-vis de la paire voisine de plaques 10. Lesdits emboutis 14 sont munis d'orifice 16 de passage de fluide. Lesdits emboutis 14 permettent de la sorte la circulation de fluide d'une paire de plaques à l'autre par mise en correspondance desdits orifices 16. Lesdits emboutis 14 d'un même collecteur 6 sont ici situés dans le prolongement axiale les uns des autres de façon à ce que lesdits collecteurs 6 soient sensiblement rectilignes.  Said fluid connections 12 comprise, for example, stampings 14 issuing from said plates 10, said stampings 14 coming into contact with stampings 14 of the plate opposite the neighboring pair of plates 10. The said stamps 14 are provided with port 16 for fluid passage. The said stamps 14 thus enable the circulation of fluid from one pair of plates to the other by matching said orifices 16. The said stamps 14 of the same manifold 6 are here located in the axial extension of each other. so that said collectors 6 are substantially rectilinear.
Lesdites plaques 10 comprennent un bord d'extrémité longitudinal 18, dit distal, opposé à un bord d'extrémité longitudinal 20 desdites plaques au niveau duquel sont situés lesdites liaisons de fluide 12. Lesdites plaques 10 comprennent un fond 22, un bord relevé 24 et une lèvre de brasage 26. Lesdites paire de plaques sont formés par deux desdites plaques 10, prévues identiques, montées tête-bêche de façon à ce que leur lèvre 26 soient en contact. Chacune desdites paires de plaques 10 comprend un conduit pour la circulation en U du fluide, entre lesdits collecteurs 6. Said plates 10 comprise a longitudinal end edge 18, said distal, opposite a longitudinal end edge 20 of said plates at which said fluid connections 12 are located. Said plates 10 comprise a bottom 22, a raised edge 24 and a brazing lip 26. Said pair of plates are formed by two of said plates 10, provided identical, mounted head to tail so that their lip 26 are in contact. Each of said pairs of plates 10 comprises a conduit for the circulation U of the fluid, between said collectors 6.
Lesdites lames 10 pourront comprendre un perturbateur 28 de l'écoulement fluide frigorigène. Ici, lesdits perturbateurs définissent des canaux longitudinaux de circulation dudit fluide.  Said blades 10 may comprise a disrupter 28 of the refrigerant flow. Here, said disruptors define longitudinal channels for circulating said fluid.
Selon une variante de réalisation non représentée, lesdits perturbateurs sont des déformations localisées sur au moins l'une des plaques 10 délimitant un conduit de circulation du fluide. De telles déformations sont de préférence des emboutis réalisés en concomitance des emboutis 14 définissant en partie lesdites liaisons de fluide 12.  According to an alternative embodiment, not shown, said disrupters are localized deformations on at least one of the plates delimiting a fluid circulation duct. Such deformations are preferably stampings made in concomitance with stampings 14 partially defining said fluid connections 12.
Selon une variante non-illustrée, la circulation en U recherchée est obtenue par une forme emboutie du fond des plaques telle une nervure partielle centrale partant de bords d'extrémité longitudinale muni des embouties 14 de liaison.  According to a non-illustrated variant, the desired U-shaped circulation is obtained by a stamped form of the bottom of the plates such as a central partial rib starting from longitudinal end edges provided with the stampings 14 of connection.
Selon une autre variante, correspondant à l'échangeur illustré, les collecteurs 6 d'entrée débouchent en vis-à-vis d'une première partie des canaux des perturbateurs 28 tandis que le collecteur de sortie débouche en vis-à-vis d'une seconde partie des canaux, séparée de ladite première partie des canaux par un ou plusieurs canaux centraux 30. En outre, lesdites plaques 10 comprennent des emboutis de blocage 32, entre les emboutis de liaison 14, fermant le ou lesdits canaux centraux 30 à l'une de leur extrémités longitudinales.  According to another variant, corresponding to the illustrated exchanger, the inlet manifolds 6 open towards a first part of the channels of the disrupters 28 while the outlet manifold opens in opposite of a second part of the channels, separated from said first part of the channels by one or more central channels 30. In addition, said plates 10 comprise locking stampings 32, between the connecting pieces 14, closing the said central channel (s) 30 to one of their longitudinal ends.
Lesdites perturbateurs 28 sont avantageusement plus court que le fond Said disruptors 28 are advantageously shorter than the bottom
22 desdites plaques 10 pour définir une zone de demi-tour pour le fluides réfrigérant dans chacune des paires de plaques. 22 of said plates 10 to define a turn-around zone for the refrigerant fluids in each of the pairs of plates.
Ledit bloc 2 pourra être muni de turbulateurs 100 entre lesdites paires de plaques 10, lesdits turbulateurs 100 étant destinés à être traversés par ledit liquide caloporteur.  Said block 2 may be provided with turbulators 100 between said pairs of plates 10, said turbulators 100 being intended to be traversed by said heat transfer liquid.
Ledit bloc 2 présente des hauteurs internes de lames 3, par exemple, de 1 à 1 ,5 mm pour la circulation du fluide frigorigène et/ou des hauteurs entre paires de lames 3, par exemple, entre 2 et 4 mm pour la circulation du liquide calopoteur. Said block 2 has internal heights of blades 3, for example from 1 to 1.5 mm for the circulation of the refrigerant and / or heights between pairs blades 3, for example, between 2 and 4 mm for the circulation of the booster liquid.
Ledit bloc 2 présentent une face latérale 34 ouverte entre lesdites lames 3, du côté d'extrémité longitudinale desdites lames opposé à celui muni desdits collecteurs 6.  Said block 2 has a lateral face 34 open between said blades 3, on the longitudinal end side of said blades opposite that provided with said collectors 6.
Si l'on se reporte de nouveau aux figures 1 et 2, on constate que ledit boîtier 1 comprend une première 40 et une seconde 42 parties définissant un volume intérieur 44 à l'intérieur duquel lesdites lames 3 de circulation du fluide réfrigérant sont situées. On facilite de la sorte le montage du bloc 2. Ledit boîtier 1 pourra à ce sujet être configuré pour guider ledit bloc 2 pendant l'assemblage de l'échangeur.  Referring back to FIGS. 1 and 2, it can be seen that said housing 1 comprises a first 40 and a second 42 portions defining an interior volume 44 inside which said refrigerant circulation blades 3 are located. This facilitates the assembly of the block 2. Said housing 1 may in this regard be configured to guide said block 2 during assembly of the exchanger.
Comme illustré à la figure 1 , selon un premier exemple de réalisation, ladite première partie 40 est formée d'une boîte et ladite seconde partie 42 est formée d'un couvercle de fermeture de ladite boîte. Ladite boîte 40 est, par exemple, en matériau plastique, et/ou ledit couvercle 42 est, par exemple, en matériau métallique, notamment aluminium et/ou alliage d'aluminium.  As illustrated in Figure 1, according to a first embodiment, said first portion 40 is formed of a box and said second portion 42 is formed of a closure lid of said box. Said box 40 is, for example, plastic material, and / or said lid 42 is, for example, metal material, including aluminum and / or aluminum alloy.
Ledit couvercle de fermeture 42 comprend ici une gorge 46 et ladite boîte 40 est fixée dans ladite gorge 46. Ledit boîtier 1 pourra en outre comprendre un joint 48, situé dans ladite gorge 46. Ladite boîte 40 présente avantageusement un pied de boîte 50 le long d'un bord de ladite boîte 40, ledit joint 48 étant comprimé dans ladite gorge 46 par ledit pied de boîte 50. Ledit couvercle 42 est, par exemple, serti sur ladite boîte 40, ici par des dents 52 de sertissage coopérant avec ledit pied de boîte 50.  Said closure cover 42 here comprises a groove 46 and said box 40 is fixed in said groove 46. Said housing 1 may further comprise a seal 48, located in said groove 46. Said box 40 advantageously has a box foot 50 along an edge of said box 40, said gasket 48 being compressed in said groove 46 by said box foot 50. Said cover 42 is, for example, crimped on said box 40, here by crimping teeth 52 cooperating with said foot of box 50.
Ladite boîte 40 comprend, par exemple, des tubulures 54 d'entrée et/ou de sortie pour le liquide caloporteur. Lesdites tubulures 54 d'entrée et/ou de sortie sont avantageusement issues de matière de ladite boîte 40.  Said box 40 comprises, for example, inlet and / or outlet pipes 54 for the heat transfer liquid. Said inlet and / or outlet pipes 54 are advantageously made from material of said box 40.
Ledit couvercle 42 comprend de son côté des orifices 56 de passage pour ledit fluide frigorigène. Lesdits orifices de passage sont situés, par exemple, au niveau d'emboutis 60 réalisés dans ledit couvercle pour venir en contact avec lesdits collecteurs 6 du bloc 2 de sorte que le fluide frigorigène circule dans une cavité 62 définie par lesdits emboutis 60 de couvercle 42 en entrant ou sortant desdits collecteurs 6. Ledit échangeur comprend ici en outre une bride 58 d'entrée et/ou sortie de fluide frigorigène fixée sur le couvercle 42 en vis des orifices de passage 56 et des cavités 62. Said cover 42 comprises on its side orifices 56 for passage for said refrigerant. Said passage orifices are located, for example, at the level of stampings 60 made in said cover to come into contact with said collectors 6 of the block 2 so that the refrigerant circulates in a cavity 62 defined by said stampings 60 of cover 42 by entering or leaving said manifolds 6. Said exchanger further comprises here a flange 58 inlet and / or outlet of refrigerant fixed on the cover 42 in screws of the through openings 56 and cavities 62.
Ledit boîtier 1 pourra en outre comprendre des brides de fixation 63, 64 sur ladite boîte 40 et/ou sur ledit couvercle 42, avantageusement issus de matière de ceux-ci. Un tel boîtier 1 est illustré extérieurement à la figure 8.  Said housing 1 may further comprise fixing flanges 63, 64 on said box 40 and / or on said cover 42, advantageously derived from material thereof. Such a housing 1 is illustrated externally in FIG. 8.
La figure 5 illustre un mode de réalisation semblable à la différence de l'orientation de l'une au moins des tubulures 54 d'entrée/sortie du liquide. A la figure 1 , la ou les tubulures 54 sont issues d'une face de la boîte 40 opposée au couvercle 42, en s'éloignant dudit couvercle 42 tandis qu'à la figure 5, la ou les tubulures 54 forment un coude 55 en se rapprochant dudit couvercle 42.  Figure 5 illustrates an embodiment similar to the difference of the orientation of at least one of the inlet / outlet pipes 54 of the liquid. In FIG. 1, the tubing or pipes 54 come from a face of the box 40 opposite to the cover 42, while moving away from said cover 42 whereas in FIG. 5, the tubing or pipes 54 form a bend 55 in approaching said lid 42.
Comme illustré à la figure 2, selon un mode de réalisation différent, lesdites première et seconde parties sont formées chacune d'une coquille 40, 42, lesdites coquilles étant assemblées l'une à l'autre. Lesdites coquilles 40, 42 sont, par exemple, en matériau plastique.  As illustrated in Figure 2, according to a different embodiment, said first and second parts are each formed of a shell 40, 42, said shells being assembled to one another. Said shells 40, 42 are, for example, made of plastic material.
Chacune desdites coquilles 40, 42 comprend ici un bord relevé 70 pour l'assemblage avec l'autre desdites coquilles. Lesdits bords relevés 70 sont assemblés l'un contre l'autre, par exemple, selon un contact plan sur plan.  Each of said shells 40, 42 here comprises a raised edge 70 for assembly with the other of said shells. Said raised edges 70 are assembled against each other, for example, in plane-to-plane contact.
Lesdites coquilles 40, 42 sont assemblées l'une à l'autre, par exemple par collage, sellage et/ou soudure, notamment ultrason. Elles pourront également être assemblées par l'intermédiaire de brides de serrage 72, un joint 74 étant prévu entre lesdites coquilles 40, 42, ici entre leur bord relevé 70.  Said shells 40, 42 are assembled to one another, for example by gluing, saddling and / or welding, in particular ultrasound. They may also be assembled by means of clamps 72, a seal 74 being provided between said shells 40, 42, here between their raised edge 70.
L'une 40 des coquilles comprend des tubulures 76 d'entrée et/ou de sortie pour le liquide caloporteur et/ou l'autre 42 des coquilles comprend des tubulures 78 d'entrée et/ou sortie pour le fluide frigorigène, avantageusement issues de matière desdites coquilles.  One of the shells comprises inlet and / or outlet nozzles 76 for the heat transfer fluid and / or the other shell 42 comprises inlet and / or outlet pipes 78 for the refrigerant, advantageously derived from material of said shells.
Ledit échangeur pourra en outre comprendre des brides 80 de connexion au bloc 2, en particulier au niveau d'une extrémité axiale desdits collecteurs 6, pour la circulation du fluide frigorigène. Lesdites brides 80 de connexion au bloc 2 sont positionnées dans lesdites tubulures 78 d'entrée/sortie correspondantes au besoin à l'aide d'un joint 82 assurant une étanchéité entre le volume intérieur 44 du boîtier 1 et un conduit 84 défini par lesdites tubulures 78 d'entrée/sortie du fluide. Lesdites brides 80 de connexion au bloc 2 établissent une communication étanche de fluide entre lesdits conduits 84 et ledit bloc 2. Lesdites tubulures 78 d'entrée/sortie du fluide pourront en outre accueillir des moyens 86 de connexion rapide. Les tubulures 76 d'entrée et/ou de sortie pour le liquide caloporteur pourront également accueillir des moyens de connexion rapide (non représenté). Said exchanger may further comprise flanges 80 for connection to the block 2, in particular at an axial end of said collectors 6, for the circulation of the refrigerant. Said flanges 80 for connection to the block 2 are positioned in said corresponding inlet / outlet pipes 78, if necessary by means of a seal 82 ensuring a seal between the internal volume 44 of the housing 1 and a pipe 84 defined by said pipes. 78 inlet / outlet of the fluid. Said flanges 80 for connection to block 2 establish a communication fluid tight between said conduits 84 and said block 2. The said manifolds 78 of fluid inlet / outlet may further accommodate means 86 for quick connection. The inlet and / or outlet pipes 76 for the heat transfer liquid may also accommodate rapid connection means (not shown).
A la figure 2, lesdites coquilles 40, 42 sont assemblées selon ladite direction d'empilement D. Autrement dit, le plan de contact des bords relevés 70 est orthogonal à ladite direction d'empilement D. Par ailleurs, l'introduction du fluide frigorigène dans le bloc 2 s'effectue selon une direction parallèle à ladite direction d'empilement.  In FIG. 2, said shells 40, 42 are assembled in said stacking direction D. In other words, the contact plane of the raised edges 70 is orthogonal to said stacking direction D. Moreover, the introduction of the refrigerant in block 2 is carried out in a direction parallel to said stacking direction.
En variante, à la figure 6, lesdites coquilles 40, 42 sont assemblées selon une direction perpendiculaire à ladite direction d'empilement. Autrement dit, le plan de contact des bords relevés 70 est parallèle à ladite direction d'empilement D. Par ailleurs, l'introduction du fluide frigorigène dans le bloc 2 s'effectue selon une direction orthogonale à ladite direction d'empilement.  Alternatively, in Figure 6, said shells 40, 42 are assembled in a direction perpendicular to said stacking direction. In other words, the contact plane of the raised edges 70 is parallel to said stacking direction D. Furthermore, the introduction of the refrigerant into the block 2 is performed in a direction orthogonal to said stacking direction.
Ledit bloc 2 comprend ici une fenêtre 90 d'entrée et/ou de sortie du fluide frigorigène selon une direction sensiblement orthogonale à ladite direction d'empilement D, au niveau de l'une et/ou l'autre desdites boîtes collectrices 6, plus précisément des emboutis 14 des lames 10 d'une même paire de lames. Une connexion avec lesdites tubulures 78 d'entrée/sortie du fluide est établie, par exemple, selon une solution semblable à celle du mode de réalisation de la figure 2 à l'aide d'une bride de connexion 92. Lesdites tubulures 78 d'entrée/sortie du fluide sont ici coudées.  Said block 2 here comprises a window 90 for entering and / or leaving the refrigerant in a direction substantially orthogonal to said stacking direction D, at one and / or the other of said manifolds 6, plus precisely stampings 14 of the blades 10 of the same pair of blades. A connection with said fluid inlet / outlet manifolds 78 is established, for example, according to a solution similar to that of the embodiment of FIG. 2 using a connection flange 92. Said tubing 78 of FIGS. fluid inlet / outlet are here bent.
Dans cette variante, lesdites coquilles 40, 42 sont assemblées l'une à l'autre, par exemple, au niveau de zones d'interface entre les têtes de lame et une partie d'échange de chaleur desdites lames 10.  In this variant, said shells 40, 42 are assembled to one another, for example, at the interface zones between the blade heads and a heat exchange part of said blades 10.
Cela étant, ledit boîtier 1 est configuré pour faire circuler ledit liquide caloporteur en plusieurs passes. Il pourra ainsi comprendre une cloison 102 pour assurer une circulation en U du liquide caloporteur entre les tubulures 54, 76 d'entrée et de sortie du liquide caloporteur. Cette dernière se fera avantageusement à contre-courant de la circulation en U organisée dans les lames 3 du bloc 2. A la figure 7, on voit un exemple de boîtier 1 permettant une circulation en plusieurs nappes et, dans chaque nappe, en plusieurs passes grâce à différentes cloisons 104 ménagées dans une paroi dudit boîtier 1 . However, said housing 1 is configured to circulate said heat transfer liquid in several passes. It may thus comprise a partition 102 to ensure a U-shaped circulation of the coolant between the pipes 54, 76 for entering and leaving the coolant. The latter will be advantageously against the current flow U organized in the blades 3 of block 2. FIG. 7 shows an example of a housing 1 allowing a circulation in several plies and, in each ply, in several passes thanks to different partitions 104 formed in a wall of said housing 1.

Claims

Revendications claims
1. Echangeur de chaleur entre un liquide caloporteur et un fluide réfrigérant, notamment pour véhicule automobile, ledit échangeur comprenant un boîtier (1 ) et un bloc (2) de circulation du fluide réfrigérant, définissant des lames (3) de circulation dudit fluide réfrigérant superposées selon une direction d'empilement, ledit bloc (2) étant disposé dans ledit boîtier (1 ), ledit échangeur étant configuré pour définir un circuit de passage dudit liquide caloporteur dans ledit boîtier (1 ) entre lesdites lames (3) de manière à permettre un échange de chaleur entre le liquide caloporteur et le fluide frigorigène. 1. Heat exchanger between a coolant and a coolant, especially for a motor vehicle, said exchanger comprising a housing (1) and a block (2) for circulating the refrigerant fluid, defining blades (3) for circulating said coolant superimposed in a stacking direction, said block (2) being disposed in said housing (1), said exchanger being configured to define a passage circuit for said heat transfer liquid in said housing (1) between said blades (3) so as to allow a heat exchange between the coolant and the refrigerant.
2. Echangeur selon la revendication 1 dans lequel ledit boîtier comprend une première (40) et une seconde (42) parties définissant un volume intérieur (44) à l'intérieur duquel lesdites lames (3) de circulation du fluide réfrigérant sont situées. 2. Exchanger according to claim 1 wherein said housing comprises a first (40) and a second (42) portions defining an interior volume (44) within which said blades (3) for circulating refrigerant are located.
3. Echangeur selon la revendication 2 dans lequel ladite première partie (40) est formée d'une boîte et ladite seconde partie (42) est formée d'un couvercle de fermeture de ladite boîte (40). The exchanger of claim 2 wherein said first portion (40) is formed of a box and said second portion (42) is formed of a closure lid of said box (40).
4. Echangeur selon la revendication 3 dans lequel ledit couvercle de fermeture (42) comprend une gorge (46) et ladite boîte (40) est fixée dans ladite gorge (46). 4. Exchanger according to claim 3 wherein said closure cover (42) comprises a groove (46) and said box (40) is fixed in said groove (46).
5. Echangeur selon la revendication 4 dans lequel ladite boîte (40) comprend des tubulures (54) d'entrée et/ou de sortie pour le liquide caloporteur et/ou ledit couvercle (42) comprend des orifices (56) de passage pour ledit fluide frigorigène. 5. Exchanger according to claim 4 wherein said box (40) comprises inlet and / or outlet pipes (54) for the heat-transfer liquid and / or said cover (42) comprises orifices (56) passage for said Refrigerant.
6. Echangeur selon la revendication 2 dans lequel lesdites première et seconde parties (40, 42) sont formées chacune d'une coquille, lesdites coquilles (40, 42) étant assemblées l'une à l'autre. The exchanger of claim 2 wherein said first and second portions (40,42) are each formed of a shell, said shells (40,42) being joined to each other.
7. Echangeur de chaleur selon la revendication 6 dans lequel lesdites coquilles (40, 42) sont assemblées selon ladite direction d'empilement. 7. Heat exchanger according to claim 6 wherein said shells (40, 42) are assembled in said stacking direction.
8. Echangeur selon la revendication 6 dans lequel lesdites coquilles (40, 42) sont assemblées selon une direction perpendiculaire à ladite direction d'empilement. 8. Exchanger according to claim 6 wherein said shells (40, 42) are assembled in a direction perpendicular to said stacking direction.
9. Echangeur selon la revendication 8 dans lequel ledit bloc (2) comprend une fenêtre (90) d'entrée et/ou de sortie du fluide frigorigène selon une direction sensiblement orthogonale à ladite direction d'empilement. 9. Exchanger according to claim 8 wherein said block (2) comprises a window (90) for input and / or output of the refrigerant in a direction substantially orthogonal to said stacking direction.
10. Echangeur de chaleur selon l'une quelconque des revendications 6 ou 7 dans lequel chacune desdites coquilles (40, 42) comprend un bord relevé (70) pour l'assemblage avec l'autre desdites coquilles au moyen d'au moins une bride de fixation (70). 10. Heat exchanger according to any one of claims 6 or 7 wherein each of said shells (40, 42) comprises a raised edge (70) for assembly with the other of said shells by means of at least one flange. fixing (70).
11. Echangeur selon la revendication 5 dans lequel l'une (40) des parties comprend des tubulures (76) d'entrée et/ou de sortie pour le liquide caloporteur et/ou l'autre (42) des parties comprend des tubulures (78) d'entrée et/ou sortie pour le fluide frigorigène. 11. Exchanger according to claim 5 wherein one (40) of the parts comprises inlet and / or outlet pipes (76) for the coolant and / or the other (42) of the parts comprises tubing ( 78) and / or outlet for the refrigerant.
12. Echangeur selon l'une quelconques de revendications 3 à 1 1 dans lequel ladite boîte (40) et/ou lesdites coquilles (40, 42) sont en matériau plastique et/ou ledit couvercle (42) est en matériau métallique. 12. Exchanger according to any one of claims 3 to 1 1 wherein said box (40) and / or said shells (40, 42) are of plastic material and / or said cover (42) is made of metallic material.
13. Echangeur selon l'une quelconque des revendications précédentes dans lequel ledit boîtier (2) comprend au moins une cloison (102, 104) destinée à faire circuler ledit liquide caloporteur en plusieurs passes et/ou nappes. 13. Exchanger according to any one of the preceding claims wherein said housing (2) comprises at least one partition (102, 104) for circulating said heat transfer liquid in several passes and / or layers.
14. Echangeur selon l'une quelconque des revendications précédentes dans lequel lesdites lames (3) s'étendent selon une direction longitudinale, perpendiculaire à la direction d'empilement, et ledit bloc (2) comprend des collecteurs (6) pour le fluide frigorigène, situés au niveau d'un bord d'extrémité longitudinale des lames (3), dit têtes de lame. 14. Exchanger according to any one of the preceding claims wherein said blades (3) extend in a longitudinal direction, perpendicular to the stacking direction, and said block (2) comprises collectors (6) for the refrigerant, located at a longitudinal end edge of the blades (3), said blade heads.
15. Echangeur de chaleur selon l'une quelconque des revendications précédentes dans lequel ledit bloc (2) comprend des plaques (10), empilées selon ladite direction d'empilement, lesdites plaques (10) étant associées par paire pour définir lesdites lames (3) de circulation du fluide frigorigène. 15. A heat exchanger according to any one of the preceding claims wherein said block (2) comprises plates (10), stacked in said stacking direction, said plates (10) being pairwise associated to define said blades (3). ) of circulation of the refrigerant.
EP13805858.1A 2012-12-21 2013-12-12 Heat exchanger for exchanging heat between a heat transfer liquid and a refrigerant, in particular for a motor vehicle Withdrawn EP2936033A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1262623A FR3000186B1 (en) 2012-12-21 2012-12-21 HEAT EXCHANGER BETWEEN A COOLANT LIQUID AND A REFRIGERANT FLUID, IN PARTICULAR FOR A MOTOR VEHICLE
PCT/EP2013/076411 WO2014095580A1 (en) 2012-12-21 2013-12-12 Heat exchanger for exchanging heat between a heat transfer liquid and a refrigerant, in particular for a motor vehicle

Publications (1)

Publication Number Publication Date
EP2936033A1 true EP2936033A1 (en) 2015-10-28

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EP13805858.1A Withdrawn EP2936033A1 (en) 2012-12-21 2013-12-12 Heat exchanger for exchanging heat between a heat transfer liquid and a refrigerant, in particular for a motor vehicle

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US (1) US20160214457A1 (en)
EP (1) EP2936033A1 (en)
CN (1) CN105074376A (en)
FR (1) FR3000186B1 (en)
WO (1) WO2014095580A1 (en)

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JP6975943B2 (en) * 2018-02-06 2021-12-01 パナソニックＩｐマネジメント株式会社 Cooling device and battery temperature control system
FR3081383B1 (en) * 2018-05-22 2023-10-20 Valeo Systemes Thermiques VENTILATION DEVICE FOR A MOTOR VEHICLE
CN114270115B (en) * 2019-08-08 2023-04-21 株式会社电装 Heat exchanger

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Also Published As

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FR3000186A1 (en) 2014-06-27
WO2014095580A1 (en) 2014-06-26
US20160214457A1 (en) 2016-07-28
CN105074376A (en) 2015-11-18
FR3000186B1 (en) 2018-11-30

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