Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
  • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
  • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
  • F28D1/0435—Combination of units extending one behind the other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
  • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
  • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
• • 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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B39/00—Evaporators; Condensers
  • F25B39/04—Condensers
• • 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
• • 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
  • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
  • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
  • F28F9/0246—Arrangements for connecting header boxes with flow lines
  • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
• • 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
  • F28F9/04—Arrangements for sealing elements into header boxes or end plates
  • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
  • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
• • 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
  • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
• • 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
  • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
• • 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
  • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
  • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
• • 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
• • 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 exchange system arranged on a fluid distribution circuit and comprising at least a plurality
• heat exchangers each capable of exchanging calories between a flow of air passing through the heat exchange system and a fluid circulating in this heat exchanger.
• one-piece condenser with a series of stacked plates forming between them on the one hand sealed circulation conduits for the passage of the refrigerant fluid, on the other hand passages for the passage of air.
• a known arrangement consists in having a first heat exchanger as a condenser and a second heat exchanger, parallel to the first, fulfilling the function of sub-cooler, facing a grille opening located on the front face of the vehicle .
• the condenser and the sub-cooler are associated with a bottle for storing the refrigerant fluid in the liquid phase.
• the sub-cooler makes it possible to sub-cool the refrigerant fluid at the outlet of the storage bottle.
• the storage bottle separates the liquid phase from the gas phase of the refrigerant fluid and ensures filtration and dehydration of the refrigerant fluid.
• a known arrangement for this system consists in placing the storage bottle sideways with respect to the heat exchangers and on the one hand to connect it hydraulically to each of the exchangers via suitable pipes and on the other hand to keep it in place. place relative to the exchangers via a mechanical assembly making the bottle integral with a structural element of the vehicle or with one of the exchangers.
• the use of a storage bottle in the prior art thus requires numerous mechanical means penalizing the size of the system and making the manufacture and implementation of the heat exchange system on the vehicle complex.
• the present invention falls within this context and aims to address the aforementioned drawbacks.
• the invention consists of a heat exchanger for a refrigerant circulation circuit comprising at least one connection flange fixed to a lateral surface of said heat exchanger, characterized in that the connection flange comprises a circulation channel within its structure and a transverse mechanical fastening zone able to cooperate with another transverse mechanical fastening zone of another connecting flange of another heat exchanger.
• the heat exchanger has a substantially rectangular parallelepiped shape. It comprises a bundle of circulation channels, in particular produced by means of tubes, for the refrigerant, these circulation channels having an outlet which is located at a side wall of the heat exchanger.
• the connection flange is made integral, for example by fixing by brazing, at this fluid outlet of the heat exchanger. The refrigerant, once it leaves the heat exchanger, therefore circulates within the connection flange itself, through the circulation channel.
• the fixing, for example by brazing, of the connection flange is configured to make it possible to maintain the seal between the outlet of the heat exchanger and the inlet of the circulation channel of the connection flange in addition to ensuring the mechanical retention of the connection flange on the heat exchanger.
• connection flange also includes a transverse mechanical fixing zone.
• transverse is understood to mean that the mechanical fixing zone extends transversely with respect to the plane formed by the heat exchanger.
• connection flange comprises a body arranged in the extension of the heat exchanger and a mechanical fixing zone which forms a transverse projection of the body.
• the transverse mechanical fixing zone may be present at a free end opposite the end of the connection flange made integral by the heat exchanger.
• the transverse mechanical attachment area is configured to cooperate with another area of mechanical attachment included on another connecting flange of another heat exchanger having properties similar to what has been described previously.
• the transverse mechanical fixing zone comprises a bearing surface ensuring cooperation by
• the transverse mechanical fastening zone able to cooperate with the transverse mechanical fastening zone of the other connection flange has a particular shape allowing a complementarity of shape during the cooperation of the connecting flanges. The cooperation takes place by direct contact between the connection flanges, through the bearing surface formed in their respective mechanical fixing zone.
• the circulation channel is formed of at least two intersecting conduits in communication.
• the inlet of this circulation channel is positioned opposite one end of the tube bundle where the refrigerant circulates, the position of this inlet of the circulation channel being ensured by fixing the connection flange, for example by brazing, on the heat exchanger.
• the outlet of the circulation channel is located at a wall of the connection flange perpendicular to the wall of the connection flange comprising the inlet of the circulation channel. .
• the circulation channel consists of a first duct and a second duct, both intersecting in communication, linked for example by means of a bent section.
• the circulation channel can optionally comprise three intersecting conduits in communication, in the case where a transverse offset of the circulation channel is necessary before said circulation channel emerges at the level of a wall of the flange. connection
• connection flange perpendicular to the wall of the connection flange comprising the inlet of the circulation channel.
• intermediate duct located between the first duct and the second duct.
• the circulation channel opens onto a tip protruding from a wall of the connecting flange and intended to cooperate with a storage bottle.
• the outlet of the circulation channel of the connection flange is located on a wall perpendicular to the wall of the connection flange comprising the inlet of the circulation channel of the connection flange, more precisely the inlet formed at one end of the first duct.
• An end piece protruding from the surface of the connection flange and having a hollow shape is arranged in the axial extension of the second duct of the connection flange.
• This end piece is cylindrical in shape and includes sealing gaskets on its periphery, advantageously made of flexible material such as rubber, for example.
• the cylindrical shape of the tip is centered around an axis of extension of the tip. The tip is intended to be inserted into a circulation opening of a storage bottle which will be described later.
• the transverse mechanical fixing zone of the connecting flange comprises a through bore.
• a bore passes right through the connecting flange, in a direction parallel to the axis of elongation of the end piece of the circulation channel.
• This bore is arranged to receive a fixing means, for example a screw.
• the through bore of the connecting flange is smooth to ensure the passage of the fixing means which will be screwed to the storage bottle as will be described later, the fixing means making it possible to ensure a function of holding the connection flange in place with respect to the storage bottle.
• the invention also consists of a heat exchange system for a vehicle comprising a first heat exchanger and a second heat exchanger constituting a refrigerant circulation circuit, each exchanger conforming to what has been described. previously, characterized in that a first bearing surface of the first connecting flange of the first heat exchanger is in direct contact with a second bearing surface of the second connecting flange of the second heat exchanger.
• Heat exchangers are both parallelepipedal in shape and each have a connecting flange on their side surface.
• the two connection flanges also conform to the description given above. They therefore both include a circulation channel as well as a transverse mechanical fixing zone.
• Each transverse mechanical attachment zone extends so that there is direct contact between them.
• the transverse mechanical fastening zones respectively have complementary shapes from one transverse mechanical fastening zone to the other.
• each connecting flange comprises a longitudinal portion which extends mainly along the extension plane of the heat exchanger which is specific to it, and a transverse portion which extends mainly along a direction perpendicular to the extension plane of the exchanger which is specific to it, the transverse mechanical attachment zone being formed by or in this transverse portion.
• the first connecting flange may have substantially a block shape, with the longitudinal portion and the transverse portion having substantially equivalent dimensions while the second flange of
• connection comprises a majority longitudinal portion, that is to say that the transverse portion of the second connection flange consists of a lug of small dimensions compared to that of the longitudinal portion, the lug forming a projection perpendicular to the longitudinal portion .
• the tab of the second bridle connection forms the second mechanical fastening zone by presenting a bearing surface for the block shape of the first connection flange.
• the heat exchange system comprises a storage bottle.
• This storage bottle is connected to the two connection flanges by means which will be described below.
• the storage bottle is substantially cylindrical and allows the refrigerant fluid to be maintained in the liquid phase.
• the storage bottle is cylindrical, comprises a bottom wall arranged opposite the connection flanges, the bottom wall comprising circulation orifices configured to accommodate end pieces present at the ends of the channels circulation present at the connection flanges.
• the storage bottle is linked to the connection flanges by means of nozzles placed at the outlet of the circulation channels.
• the bottom wall of the storage bottle is placed opposite the connection flanges so that the orifices made in the bottom wall coincide with the positioning of the end pieces of the two flanges of connection once they are brought against each other.
• the ends of the connection flanges therefore each fit into an orifice in the bottom wall of the storage bottle, which helps to close the refrigerant circuit within the heat exchange system.
• the refrigerant circulates initially within the first heat exchanger, then in the circulation channel of the connecting flange of the first heat exchanger to the storage bottle through the nozzle inserted therein. .
• the refrigerant fluid can therefore circulate in the circulation channel of the second connecting flange of the second heat exchanger, then in the bundle of the second heat exchanger itself.
• the heat exchange system comprises a single fixing means which secures the two flanges of connection of the heat exchangers and the storage bottle.
• the bottom wall of the storage bottle has a third orifice forming a fixing orifice separate from the two circulation orifices receiving the end pieces of the connection flanges.
• connection flanges and the storage bottle fixing orifice are aligned, coaxially, with respect to each other.
• each of these orifices has an axis of revolution and these different axes of revolution are substantially coincident when the heat exchange assembly is assembled.
• the attachment hole is configured to receive the single attachment means.
• the fixing hole can for example be tapped if the fixing means is a screw in order to guarantee the retention of this same screw.
• connection flanges comprise a transverse mechanical fixing zone each provided with a bore passing right through the connection flange in a direction parallel to the axis of elongation of the matching tip.
• connection are configured and dimensioned so that, when the connection flanges cooperate with each other, their respective through-bores face each other.
• the fastening means can therefore be inserted through each through-bore so that it can be inserted subsequently into the fastening hole opening onto the bottom wall of the storage bottle.
• the fastening means has a length greater than the sum of the dimensions, in the corresponding direction, of the two transverse mechanical fastening zones so that the end of the fastening means can come out of the through bores and subsequently be housed in the within the storage bottle mounting hole.
• connection flanges are configured to form a planar cooperating surface of the storage bottle.
• Each connection flange has an upper face, corresponding to the projecting face from which the end caps extend.
• the dimensions of the connection flanges and the arrangement of the flanges between them are such that when they cooperate, the upper face of each flange of
• connection is positioned on the same plane, thus forming a surface of flat cooperation.
• the storage bottle can thus come to rest on this flat surface.
• the two heat exchangers are at least partially superimposed in a direction perpendicular to their respective plane of elongation.
• the heat exchangers therefore have a shape
• the stacking of these heat exchangers is carried out in a direction parallel to the path of the air flow from the external environment.
• the first heat exchanger is used as a condenser and the second heat exchanger is used as a sub-cooler at the outlet of the storage bottle.
• the condenser is capable of providing heat exchange between a refrigerant fluid circulating therein and a flow of incident fresh air coming from outside the vehicle.
• the sub-cooler makes it possible to create a second heat exchange zone with a refrigerant fluid cooled following its exchange of calories with the flow of fresh air in the condenser.
• FIG. 1 is a general view of the heat exchange system according to the invention.
• FIG. 2 represents a heat exchanger
• FIG. 3 illustrates the cooperation of the connection flanges
• FIG. 4 is a sectional view of the connection flanges illustrating the arrangement of the circulation channels
• FIG. 5 is a view of the cooperation of the connecting flanges from a longitudinal viewing angle
• FIG. 6 is a view of the cooperation of the connecting flanges from a vertical viewing angle
• FIG. 8 is a sectional view illustrating the attachment of the connecting flanges and the storage bottle
• FIG. 9 is a general view of the heat exchange system offering an alternative to the arrangement of the connection flanges.
• the LVT trihedron will represent the orientation of the heat exchange system according to the invention.
• transverse T corresponds to an axis perpendicular to any of the L or V directions, or else corresponds to an axis parallel to the flow of air passed through the heat exchange system.
• FIG. 1 is a general view of a heat exchange system 1 according to the invention.
• the heat exchange system 1 comprises a first heat exchanger 2 used as a condenser, and a second heat exchanger 3 used as a sub-cooler. These two heat exchangers are of parallelepipedal shape and they are partially superimposed with respect to each other. the other in a transverse direction, that is to say in a direction perpendicular to the planes of the heat exchangers.
• the heat exchange system is arranged within the grille at the front of a vehicle so that an air flow 10 from the outside passes successively through the two heat exchangers when the vehicle is in operation. operation.
• Each heat exchanger is traversed by a bundle of tubes or plates depending on the type of heat exchanger, bundle in which a refrigerant fluid circulates allowing the exchange of calories between the heat exchangers and the air flow 10 passing through the exchangers. heat.
• the first heat exchanger 2 is delimited longitudinally by a first side wall 201 and a second side wall 202, each side wall respectively playing the role of fluid distribution chamber at the inlet of the tubes or plates, and of collecting chamber in exit.
• the second heat exchanger 3 has similar side walls, with a third side wall 203 playing the role of a fluid distribution chamber and a fourth side wall 204 playing the role of a collecting chamber, it being understood that the continuity of circulation of refrigerant fluid from one heat exchanger to another implies that a third side wall 203 of the second heat exchanger 3 acting as a fluid distribution chamber is arranged on the same longitudinal side as the collecting chamber of the first heat exchanger 2, located at the side wall 202.
• the first heat exchanger 2 comprises a first connecting flange 5 made integral with the second side wall 202
• the second heat exchanger 3 comprises a second connecting flange 6 made integral with the third side wall 203.
• these connecting flanges make it possible, on the one hand, to position the heat exchangers with respect to one another and on the other hand to connect the refrigerant circuit of the two heat exchangers, via a bottle storage 4 arranged mainly along a vertical direction of elongation and which is made integral with each of the connection flanges.
• the first heat exchanger 2 comprises a fluid inlet 7 formed on the first side wall 201
• the second heat exchanger 3 comprises a fluid outlet 8 formed on the fourth side wall 204.
• the fixing lugs 9 are located at the level of the side walls of the heat exchangers 2, 3. These fixing lugs 9 can provide a connection between the heat exchanger 2 and the second heat exchanger 3 or else can be linked to structural elements of the vehicle surrounding the heat exchange system 1.
• the refrigerant fluid enters the heat exchange system 1 through the fluid inlet 7 located on the first side wall 201 of the first heat exchanger 2.
• the refrigerant fluid circulates within the structure of the first heat exchanger 2 by means of an internal tubing system to an outlet arranged in the second side wall 202 of the first heat exchanger 2.
• the first heat exchanger 2 is thus configured to ensure an exchange of calories between the circulating refrigerant fluid. within it and the air flow 10 passing through it.
• the outlet arranged in the second side wall 202 of the first heat exchanger 2 opens onto the first connection flange 5 made integral with the second side wall 202.
• This first connection flange 5 is here brazed on the second side wall 202 but it is understood that its method of fixing may be different since it allows a fixed position of the first connecting flange 5 relative to the first heat exchanger 2, allowing a tight junction to the passage of fluid between the first heat exchanger 2 and the first connecting flange 5.
• the first connection flange 5 comprises a circulation channel within its structure itself and which opens into the storage bottle 4, in particular by having at least two secant communication conduits as will be described below in more detail. details.
• the storage bottle 4 is configured to guide vertically, according to its direction of elongation, the fluid and bring it back at the outlet towards the second connecting flange 6 which also comprises a circulation channel and which is linked, here by brazing, to the second heat exchanger 3, more precisely to the third side wall 203.
• the second heat exchanger 3 like the heat exchanger 2, comprises an internal pipe system where the refrigerant circulates, up to a fluid outlet 8 located on the fourth side wall 204.
• the connections between the connection flanges and the storage bottle, as well as the arrangement of the circulation channels within the connection flanges will be explained in more detail below.
• FIG. 2 shows the first heat exchanger 2 alone. Hot refrigerant enters through fluid inlet 7 in a gaseous state. As it passes through the internal pipe of the heat exchanger 2, the refrigerant fluid is cooled by the air flow 10 and condenses. It emerges from the heat exchanger 2 at the connection flange 5 in a liquid / gaseous state. FIG. 2 also makes it possible to observe the first connecting flange 5 in more detail, the storage bottle not being shown here.
• the first connection flange 5 comprises a first upper face 31 which extends in a plane perpendicular to the extension plane of the first heat exchanger 2 and perpendicular to the vertical direction of extension of the storage bottle 4.
• the first upper face 31 comprises a first end piece 11 which projects vertically from the first upper face 31.
• the first tip 11 is hollow to allow passage of the fluid between the connecting flange and the storage bottle, and it has here a cylindrical shape centered around an axis of elongation 41.
• This first tip 1 1 comprises on its outer face has at least one element made of flexible material, advantageously of rubber, so as to form a seal.
• This flexible material can be an O-ring attached in a groove made appropriately on the face. of the first end piece or can be produced by overmolding directly on the first end piece.
• the first connection flange 5 also comprises a first through bore 13, here of straight cylindrical shape, which passes right through the structure of the first connection flange 5, that is to say from the first face upper 31 to the opposite lower face.
• the first connection flange 5 is able to cooperate with a second connection flange, as described in the following figure.
• Figure 3 is a more detailed representation of the connection flanges of each heat exchanger. It also illustrates the cooperation of the connecting flanges between them.
• the first connection flange 5 is made integral, here by brazing, the first heat exchanger 2.
• the first connection flange 5 comprises a first longitudinal portion 51 which extends along a longitudinal axis L , in the extension plane of the heat exchanger 2.
• the first connection flange 5 also comprises a first transverse portion 61 which extends in the extension of the first portion
• the first connection flange 5 is generally in the form of a block, in particular in that the vertical dimensions of the longitudinal and transverse portions of this first connecting flange are equal or substantially equal.
• the first end piece 11 is present substantially in the center of the first connecting flange 5. This first end piece 1 1 is therefore slightly offset transversely along a transverse axis T relative to the first heat exchanger 2.
• the first connection flange 5, more particularly the first transverse portion 61 comprises a first transverse mechanical fastening zone 21.
• This first transverse mechanical fastening zone 21 comprises in particular, as illustrated by a quadrilateral shape formed by of short dotted lines in Figure 3, a first bearing surface 19, the function of which will be explained in detail below, the first bearing surface 19 being located on the underside of the first connecting flange 5, that is that is to say the face opposite the first upper face 31, at the level of the first transverse portion 61.
• the first through-bore 13 passes right through the first connecting flange 5 along a vertical axis V.
• the cylindrical shape of the through-bore 13 is shown in FIG. 3 by transparency. with dots.
• the first through bore 13 is arranged
• the connecting flange 5 has a first transverse end face 71 which corresponds to a free end face of the first transverse portion 61 turned away from the first longitudinal portion 51. As illustrated in FIG. 3, this first transverse end face 71 is turned towards the second connecting flange.
• the second connecting flange 6, made integral with the second heat exchanger 3, has similarly to the above a second end piece 12, of identical appearance to the first end piece 1 1, but which, unlike the latter, is centered on the extension plane of the second heat exchanger 3, without transverse offset along a transverse axis T.
• connection 6 also comprises a second longitudinal portion 52 and a second transverse portion 62, arranged in the extension of the second longitudinal portion, this second connection flange 6 has a different shape from the first connection flange 5.
• the second longitudinal portion 52 extends along a longitudinal axis L in the extension plane of the second heat exchanger 3.
• the second longitudinal portion 52 comprises a second upper face 32, projecting from which extends the second end cap 12.
• the second longitudinal portion 52 also comprises a second transverse end face 72, facing the first connection flange 5.
• the extension along the longitudinal axis L of the second longitudinal portion 52 is of an identical length to the extension along the longitudinal axis L of the first longitudinal portion 51 of the first flange connection 5 of the first heat exchanger 2.
• the second connection flange 6 comprises a second transverse mechanical fastening zone 22, here coincident with the second transverse portion 62. As illustrated in Figure 3, the second fastening zone
• Mechanical transverse 22 is in the form of a tab which protrudes from the second transverse end face 72 and which has dimensions relating to the vertical V and longitudinal L axes that are smaller than the corresponding dimensions of the second longitudinal portion 52.
• the second transverse mechanical fastening zone 22 extends
• the second longitudinal portion 52 that is to say opposite the fixing zone, for example by brazing, to the second heat exchanger 3. More particularly, the second transverse portion 62 forming the second fixing zone
• mechanical 22 extends from the longitudinal free end edge of the second connecting flange 6, in a longitudinal dimension less than the
• the upper face of the second transverse portion 62, or of the second transverse mechanical fixing zone 22, forms a second bearing surface 20, of dimensions substantially equivalent to those of the first bearing surface provided on the face. lower part of the first connection flange 5.
• the second mechanical attachment zone 22 of the second heat exchanger 3 comprises a second through bore 14 passing through the entire second mechanical attachment zone 22 along a vertical axis V.
• the first connection flange 5 and the second connection flange 6 are able to cooperate with each other, in particular by complementary shapes.
• the longitudinal dimension along an axis L is identical between the two connection flanges and their dimensions along a vertical axis V and along a transverse axis T are suitable for cooperation.
• connection flange rests on the second connection flange.
• connection 6 to the top face of the first connection flange 5.
• Figure 4 is a sectional view of the two connecting flanges in cooperation, that is to say in their final position when the heat exchange system is assembled, according to a section plane perpendicular to the heat exchangers and passing through the end pieces, this sectional view making visible the arrangement of the circulation channels formed in the structure of the connection flanges.
• the heat exchangers are not shown in the figure.
• Each circulation channel has one end located at the level of the solder between the connection flange and the heat exchanger, and another end represented by the end piece located on each connection flange.
• the first end piece 1 1 of the first connecting flange 5 is offset transversely with respect to the elongation plane of the first heat exchanger and therefore with respect to the inlet of the circulation channel of the first connection flange while the second end piece 12 of the second connection flange 6 is in alignment with the extension plane of the second heat exchanger.
• the first connection flange 5 comprises a first circulation channel 16 extending from a circular inlet 24, located on the wall intended to be brazed to the heat exchanger, to the first end piece 1 1.
• the fluid refrigerant after having circulated in the heat exchanger, opens at this circular inlet 24 and flows in liquid / gaseous form within this first circulation channel 16.
• the first circulation channel 16 is formed by the succession three secant conduits in fluid communication including a first conduit 161, an intermediate conduit 162 and a second conduit 163.
• the first conduit 161 extends mainly in a longitudinal direction L.
• the first circulation channel 16 therefore extends subsequently along a transverse axis T, through the intermediate duct iaire 162.
• the first circulation channel 16 then extends in a vertical direction V, through the second duct 163 which extends the intermediate duct 162 and opens onto the first nozzle 11.
• the second connection flange 6 comprises a second circulation channel 23 extending from the second end piece 12 to a circular outlet 25 located on the wall intended to be brazed to the second heat exchanger.
• the coolant circulates from the second end piece 12 to the circular outlet 25 while being guided by the second circulation channel 23, comprising a third duct 231 and a fourth duct 232.
• the second end piece 12 is centered with respect to the extension plane of the second heat exchanger so that the second circulation channel does not require an intermediate duct as described for the first connection flange.
• the second connection flange 6 therefore comprises two intersecting conduits forming the second circulation channel 23, the second circulation channel 23 extending along a longitudinal axis L through the third pipe 231 and along a vertical axis V through the fourth conduit 232.
• Figures 5 and 6 are views from two different angles of the cooperation of the connection flanges.
• FIG. 5 is a side view, according to a viewing angle coincident with a longitudinal axis L
• FIG. 6 is a bottom view, according to a viewing angle coincident with a vertical axis V.
• the heat exchangers are not shown here for clarity.
• FIG. 5 illustrates more particularly the configuration of the connection flanges when the heat exchange system is assembled and in particular the fact that on the one hand the first transverse mechanical fixing zone of the first connection flange 5 bears on the second transverse mechanical fixing zone of the second connecting flange 6 by means of direct contact between their respective bearing surface 19 and 20, and that on the other hand a contact plane is also formed by the contact between the first side
• a first vertical dimension V1 corresponds to the vertical dimension of the first connection flange 5.
• a second vertical dimension V 2 corresponds to the vertical dimension of the second longitudinal portion of the second connection flange 6.
• a third dimension vertical V3 corresponds to the vertical dimension of the second transverse portion or of the second transverse mechanical fixing zone of the second connection flange 6, forming a lug projecting from the second end face
• the first connection flange 5 of a first vertical dimension V1 rests on the second transverse mechanical fixing zone of the second connection flange 6 of a third vertical dimension V3.
• the heat exchange system is configured so that the first upper face 31 of the first connection flange 5 and the second upper face 32 of the second connection flange 6 are coplanar and participate in forming the same flat cooperation surface 80. It follows from the above that the second vertical dimension V2 is equal to the sum of the first vertical dimension V1 and the third vertical dimension V3.
• connection flanges the position of cooperation of the connection flanges implies that the through bores of each connection flange 5, 6 are aligned.
• a fastening means 15 can be inserted through the two connecting flanges 5 and 6.
• the fastening means 15 shown here is a screw, but any fastening means suitable for being inserted into the bores can be envisaged.
• the fixing means 15 comprises a head 151, which bears against the lower wall of the second connecting flange 6, and a rod, the fixing means being dimensioned so that when inserted into the through bores and the head 151 resting against the lower wall of the second connecting flange, the rod protrudes beyond the flat cooperation surface 80, here at the level of the upper face of the first connecting flange, so as to be able to be inserted into a storage bottle fixing hole.
• the tightening of the screw in this fixing orifice of the storage bottle involves moving the head 151 towards the storage bottle and therefore plating the second mechanical fixing zone of the second connection flange against. the first mechanical fixing zone of the first connection flange, and a pressing of all the flanges against the storage bottle.
• Figure 6 makes more particularly visible the head of the fastening means 15 as well as the arrangement of the transverse mechanical fastening zones of the connecting flanges 5 and 6 with respect to each other.
• This viewing angle shows that the first connecting flange 5 comprises a chamfer 26, also visible in Figure 5, at the junction edge between the lower face and the first transverse end face 71, c ' that is to say the edge capable of being opposite the junction between the second transverse end face 72 of the second connecting flange and the tab which projects from this second face and which forms the second zone mechanical fastening.
• This chamfer 26 makes it possible to limit the mechanical interference which may appear during the cooperation between the connection flanges 5 and 6.
• FIG. 7 more particularly represents the storage bottle 4.
• the storage bottle 4 is cylindrical or substantially cylindrical in shape.
• the storage bottle 4 includes a bottom wall 28. It is this bottom wall 28 which will interact with the connection flanges.
• the bottom wall 28 comprises three orifices: two circulation orifices 17 and a fixing orifice 18 which corresponds to the fixing hole mentioned above and capable of cooperating with the rod of the fixing means 15.
• the circulation orifices 17 are able to receive respectively the first end piece of the first connection flange 5 and the second end piece of the second connection flange 6.
• the circulation orifices 17 therefore have a diameter suitable for receiving the end pieces of the connection flanges, taking into account any sealing gaskets that may be included at the end caps.
• the center distance between the circulation orifices 17 is substantially equal to the center distance between the end pieces when the connection flanges cooperate with each other with the transverse end faces 71, 72 of each contacting connection flange.
• the fixing hole 18 is also present at the level of the bottom wall 28. When the storage bottle is placed in the refrigerant system, the fixing hole 18 is opposite the superimposed through bores the one over the other.
• the fixing hole 18 is suitable for receiving the fixing means which therefore passes through each of the connection flanges before being secured to the storage bottle. If the fixing means is for example a screw, the fixing hole 18 is threaded. As stated previously, it can be seen that a single fixing means makes it possible to fix the position of the storage bottle
• the head tends to press the second flange against the first flange and all of the flanges against the back wall of the storage bottle.
• Figure 8 is a sectional view of the connection flanges and the storage bottle when they are secured to each other. For reasons of clarity of the figure, the heat exchangers and the fixing means are not shown.
• connection 5 and the second connection flange 6 cooperate with each other through their bearing surface and their respective transverse end face.
• the first through bore 13 and the second through bore 14 are opposite from each other and thus participate in forming a continuous through bore.
• the storage bottle 4 is arranged at the level of the flat cooperation surface 80, resulting from the cooperation of the connecting flanges 5 and 6, so that the fixing orifice 18 of the storage bottle 4 is opposite the bores. 13 and 14. This position is obtained in particular by inserting the end pieces of the flanges into the circulation openings of the storage bottle (not visible in this FIG. 8).
• the fixing means not shown in this figure, is inserted through the end of the second through bore 14 and along a vertical axis V.
• the rod of the fixing means therefore passes through the second through bore 14, then the first through bore 13 to 'within the fixing orifice 18 of the storage bottle 4.
• the rod of the fixing means must therefore be long enough to pass through all of the bores 13 and 14 and to extend over a substantial length of the fixing orifice 18.
• the bores 13 and 14 are smooth in order to ensure the passage of the rod of the fixing means without mechanical interference while the fixing hole 18 of the storage bottle 4, in on the other hand, comprises a means for mechanically maintaining the fixing means, for example an internal thread if said fixing means is a screw.
• Figure 8 also highlights the importance of chamfer 26 to avoid mechanical interference. As illustrated, this is opposite a fillet 27 (also visible in FIG. 5) included at the level of the second connection flange 6, at the junction between the second transverse end face of the second flange connection and the tab which projects from this second face and which forms the second mechanical fixing zone.
• Figure 9 is a view of the heat exchange system 1 as a whole, illustrating the interchangeability of the connection flanges. Indeed, Figure 9 is identical to Figure 1, except that the first connecting flange 5 as described above is located on the second heat exchanger 3, and the second connecting flange 6 such as
• connection flanges does not depend on the heat exchanger on which the connection flange is brazed. It is important according to the invention to have two flanges respectively configured to ensure the passage of fluid between the heat exchangers 2 and 3 and the storage bottle 4, and to cooperate with each other by complementarity of shapes.
• the shape of the connection flanges 5 and 6 can therefore also vary, as long as they have a complementarity between them making it possible to obtain a flat cooperation surface to accommodate the storage bottle 4 as well as through bores aligned during the cooperation of the flanges so that they can allow the passage of a single fixing means making it possible to join together in a single operation the connecting flanges and the storage bottle.
• connection flanges can be changed without harming the invention, as long as they fulfill the functions described in this document.

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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)
• Air-Conditioning For Vehicles (AREA)

Applications Claiming Priority (2)

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• 2019
  • 2019-05-21 FR FR1905299A patent/FR3096447B1/fr active Active
• 2020
  • 2020-05-18 EP EP20731399.0A patent/EP3973235A1/de active Pending
  • 2020-05-18 CN CN202080050278.3A patent/CN114080534A/zh active Pending
  • 2020-05-18 US US17/612,688 patent/US20220082329A1/en active Pending
  • 2020-05-18 WO PCT/EP2020/063760 patent/WO2020234214A1/fr unknown

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