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
  • 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
  • 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
  • F28D9/005—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 the plates having openings therein for both heat-exchange media
• • 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
  • F28D9/0056—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 with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the 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
  • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
  • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
  • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
  • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels

Definitions

• the present invention relates to the constituent plates of a heat exchanger. It relates to such a plate, a tube comprising such a plate, and a heat exchanger comprising at least one such tube.
• the motor vehicle is equipped with an installation which includes a coolant circuit inside which a coolant circulates and a coolant circuit inside which a coolant circulates.
• the refrigerant circuit includes a compressor for compressing the refrigerant, a heat exchanger for cooling the refrigerant at constant pressure, an expansion member to allow expansion of the refrigerant and a heat exchanger which is arranged to allow thermal transfer between the coolant and the heat transfer liquid.
• the heat exchanger is an exchanger formed from stacked plates and joined together to form tubes delimiting a circulation channel for the coolant or the coolant and inlet or outlet manifolds for the coolant or the coolant.
• the plate includes openings for supplying the circulation channel with heat transfer liquid or coolant.
• the plate also includes openings arranged to form the collectors.
• the circulation channel provides a passage section for the coolant or coolant which is a surface taken perpendicular to a plane in which the plate extends and perpendicular to an axis of longitudinal extension of the plate.
• the tubes are parallel to each other, which extend in a horizontal direction, orthogonal to the direction of the collectors.
• the collectors are preferably aligned in a vertical direction, parallel to a gravity direction on earth.
• the heat exchanger includes upper circulation channels which overhang lower circulation channels.
• a first problem resides in a poor distribution of the coolant and / or the heat transfer liquid inside the circulation channel. Such a poor distribution reduces the efficiency of the heat transfer between the refrigerant and the heat transfer liquid.
• a second problem resides in too high a speed of circulation of the coolant and / or the heat transfer liquid inside the circulation channel, which also minimizes the heat transfer between the coolant and the heat transfer liquid.
• a third problem resides in the fact that in the position of use of the exchanger, the coolant and / or the coolant flows in the collectors so as to more supply coolant and / or coolant to the channels. circulation channels than the upper circulation channels, due to the gravitational pull of the coolant and / or the coolant.
• An object of the present invention is to provide a plate constituting a heat exchanger which allows optimization of a distribution of the coolant and / or the heat transfer liquid inside the circulation channel that partially delimits the plate.
• An object of the present invention is to provide a plate constituting a heat exchanger which allows optimization of a supply of coolant and / or heat transfer liquid inside the circulation channel that partially delimits the plate.
• Another object of the present invention is to provide a plate constituting a heat exchanger which decreases a speed of circulation of the coolant and / or the coolant inside the circulation channel, in a particular zone where the distribution is usually inhomogeneous and / or inside the collector.
• Another object of the present invention is to provide a plate arranged to homogenize a circulation of the coolant and / or the heat transfer liquid in all of the channels, either lower or upper, of the heat exchanger.
• Another object of the present invention is to provide a particular arrangement of the plate, the latter being indifferently constitutive of a heat exchanger, a circulation path of which is arranged in a "U" shape, indifferently for a heat exchanger between a fluid coolant and a heat-transfer liquid and for a heat exchanger between a coolant and an air flow, or else a heat exchanger whose circulation path is arranged in an "I" shape, in particular for a heat exchanger between a coolant and air flow.
• Another object of the present invention is to provide a heat exchanger comprising at least one such plate, the heat exchanger being either a heat exchanger between a refrigerant and a heat transfer liquid, such as a heat exchanger interposed between a coolant circuit and a coolant circuit, a heat exchanger between a coolant and an air flow.
• a plate of the present invention is a plate constituting a heat exchanger and intended to delimit at least one channel for circulation of a fluid.
• the plate includes a bottom and at least one raised edge which surrounds the bottom.
• the plate includes at least one opening configured to supply fluid to the channel. The opening being shaped according to an opening profile.
• the plate is equipped with a distribution means fluid shaped according to a distribution means profile which is homothetic to the opening profile of the opening.
• the plate advantageously includes any one of the following technical characteristics, taken alone or in combination:
• the opening profile is circular, the profile being seen in a plane parallel to a bottom plane in which the bottom fits,
• the plate extending longitudinally and comprising longitudinal ends, the plate comprises at least two openings, which are distributed at each of the longitudinal ends of the plate,
• the plate comprises at least four openings, which are distributed two-by-two at each longitudinal end of the plate. Two of these openings are configured to communicate with a branch of a first channel formed on one side of the bottom and the other two openings are configured to communicate with a branch of a second channel formed on another side of the bottom,
• the distribution means comes from material of the plate
• the distribution means is formed by a deformation of the plate, in particular obtained by stamping the plate,
• the distribution means and the plate form a one-piece assembly which can only be separated from one another after destruction of one and / or the other of the distribution means and of the plate ,
• the distribution means comprises at least one projection which emerges from the bottom towards a first channel
• the opening being shaped as a first circle formed around a first center
• the distribution means is shaped as an arc formed partially around a second center, the second center being merged with the first center
• the second center is offset from the first center by a difference of between 5% and 25% of a first radius of the first circle
• the projections being in plurality, two immediately adjacent projections are separated by a circulation passage, the circulation passage is a passage arranged to allow circulation of the coolant or the coolant,
• the projections are distributed over the arc of a circle, so that, on the arc of a circle, the projections are formed two by two at equal distance from each other, the distance being taken between two respective planes of symmetry of the two projections,
• the projections are of a respective projection length taken between two radial ends of projections in a plane parallel to the bottom plane
• the projections are distinct from each other in shape and / or in volume
• the projections are distinct from each other in height, the height of a projection being taken between a projection foot which is formed in the bottom plane of the plate and a top of projection formed opposite the projection foot,
• the top of the projection is formed inside a plane which is parallel to the bottom plane in which the bottom is inscribed
• the distribution means comprises a ring which is in abutment against the collar
• the ring is an insert and pressed against the plate
• the ring comprises a ring which abuts against the collar, the ring being provided with at least one slot which extends from the ring towards a first fluid channel,
• the ring is circular, seen in a plane parallel to the bottom plane
• the ring is provided with a plurality of slots, two immediately adjacent slots being separated by a circulation corridor,
• the third center is offset from the first center by a difference of between 5% and 25% of the first radius of the first circle
• the circulation passage is a passage arranged to allow circulation of the coolant or the coolant
• the slots are distinct from each other in shape and / or volume
• the slots are distinct from each other in length, the length of a slot being taken between two radial ends of the slot,
• the slots are distinct from each other in height, the height of the slot being taken between a slot base secured to the ring and a slot top arranged opposite the slot base,
• the top of the niche is formed inside a plane which is parallel to the bottom plane in which the bottom is inscribed
• the ring is made of a synthetic material
• the ring is designed to be pressed against the collar
• the ring is made of a metallic material
• the metallic material is chosen from thermally conductive metallic materials, in particular aluminum or aluminum alloy, - the ring is designed to be assembled by brazing with the collar,
• the bottom comprises a rib which is arranged so that the first channel has a U-shaped profile
• the rib is parallel to a direction of elongation of the longitudinal raised edges
• the rib extends between a first longitudinal end and a second longitudinal end, the first longitudinal end being in contact with the raised edge, and preferably in contact with a first lateral raised edge that comprises the raised edge, the second longitudinal end being located at a first non-zero distance from the raised edge,
• the channel is shaped like a U, the branches of which are parallel to the longitudinal raised edges of the plate and the base of which adjoins a second raised lateral edge which is arranged opposite the longitudinal of the first raised lateral edge,
• the rib is formed at equal distance from the two longitudinal raised edges of the plate
• the rib is offset by a second non-zero distance relative to a median plane of the plate, the median plane being orthogonal to the bottom and parallel to the axis of longitudinal extension of the plate,
• the plate is provided with at least one protuberance, the distribution means being interposed between the opening and the protuberance,
• the protuberance has a frustoconical profile
• the plate comprises at least two protrusions which are aligned along an axis of lateral extension of the plate orthogonal to an axis of longitudinal extension of the plate.
• the present invention also relates to a tube formed of at least two plates assembled together, including at least one plate as described.
• the tube advantageously comprises at least any one of following technical characteristics, taken alone or in combination:
• the heat exchanger comprises at least one such tube
• the ring comprises a first annular surface formed by an axial edge of the ring, and a second annular surface formed by a terminal edge of each of the slots, the first annular surface being in contact with the collar of the first plate while the second surface annular is in contact with the bottom of the second plate,
• the heat exchanger comprises at least a first tube provided with the distribution means and a second tube free from the distribution means
• the second tube is an upper tube which overhangs the first tube
• At least three plates are nested one inside the other and delimit two by two a first channel and a second channel, the first channel being configured to be used by a heat-transfer liquid while the second channel is configured to be used by a refrigerant,
• the heat exchanger comprises a first circulation path participating in a refrigerant circuit inside which circulates a refrigerant fluid and a second circulation path inside which circulates a heat transfer liquid, the first circulation path and the second circulation path being arranged to allow heat exchange between the refrigerant and the heat transfer liquid.
• the bottom comprises a first face bordering the first circulation path and a second face bordering the second circulation path,
• the heat transfer fluid circuit comprises a heat exchanger capable of exchanging calories with an element to be cooled and / or to be heated, such as an electric motor, a battery, a device for storing calories and / or frigories or the like.
• FIG. 1 is a schematic view of an installation comprising at least one heat exchanger according to the invention
• FIG. 2 is a schematic view of a first heat exchanger participating in the installation shown in FIG. t,
• FIG. 3 is a schematic front view of a plate constituting the first heat exchanger illustrated in FIG. 2, according to a first alternative embodiment of the plate,
• FIG. 4 is a schematic front view of a plate constituting the first heat exchanger illustrated in FIG. 2, according to a second alternative embodiment of the plate,
• FIG. 5 is a schematic front view of a distribution means fitted to the plate illustrated in Figure 3, according to a first embodiment of the distribution means,
• FIG. 6 is a schematic front view of a distribution means equipping the plate illustrated in FIG. 3, according to a second embodiment of the distribution means,
• FIG. 7 is a schematic view according to a curvilinear section of the distribution means illustrated in FIGS. 5 or 6, according to a particular variant of the distribution means,
• FIG. 8 is a schematic front view of a distribution means equipping the plate illustrated in FIG. 4,
• FIG. 9 is a schematic view in partial section of the first heat exchanger illustrated in FIG. 2
• FIG. 10 is a diagrammatic view of a second heat exchanger participating in the installation shown in FIG.
• FIG. n is a schematic front view of a constituent plate of the second heat exchanger illustrated in Figure to, according to a first alternative embodiment of the plate,
• FIG. 12 is a schematic front view of a constituent plate of the second heat exchanger illustrated in Figure 10, according to a second alternative embodiment of the plate.
• a motor vehicle is equipped with an element 1 which should be cooled or warmed, for example to optimize its operation.
• an element 1 is in particular an electric or thermal motor intended to at least partially propel the motor vehicle, a battery provided for storing electric energy, a device for storing calories and / or frigories or the like.
• the motor vehicle is equipped with an installation 2 which comprises a refrigerant fluid circuit 3 inside which a refrigerant fluid 4, carbon dioxide for example or the like circulates, and a coolant circuit 5 to 1 'inside which circulates a heat transfer liquid 6, in particular glycol water or the like.
• the installation 2 comprises at least one heat exchanger 11, 12 according to the present invention.
• the installation 2 is described below to better understand the present invention but the characteristics of the installation 2 described are in no way restrictive for the heat exchanger 11, 12 of the present invention. In other words, the installation 2 is likely to have different structural characteristics and / or different operating modes than those described without the heat exchanger 11, 12 departing from the rules of the present invention.
• the refrigerant circuit 3 comprises a compressor 7 for compressing the refrigerant 4, a refrigerant / outdoor air exchanger 8 for cooling the refrigerant 4 at constant pressure, for example placed on the front face of the motor vehicle, an expansion member 9 to allow expansion of the fluid refrigerant 4 and a first heat exchanger 11 which is arranged to allow thermal transfer between the refrigerant 4 and the heat transfer liquid 6.
• the refrigerant circuit 3 comprises a second heat exchanger 12 which is arranged to allow thermal transfer between the refrigerant 4 and an air flow 10, the air flow 10 circulating for example inside a pipe 13 of a ventilation, heating and / or air conditioning system, before being delivered inside a passenger compartment of the motor vehicle.
• the element 1 is in relation with a heat exchanger 14, the heat exchanger 14 being able to modify a temperature of the element 1, in particular by direct contact formed between the element 1 and the heat exchanger 14 , the heat exchanger 14 constituting the coolant circuit 5.
• the coolant circuit 5 includes a pump 15 for circulating the coolant 6 inside the coolant circuit 5.
• the coolant circuit 5 includes the first heat exchanger 11 which is also part of the coolant circuit 3.
• the first heat exchanger 11 comprises at least a first circulation path 21 of the coolant 4 and at least a second circulation path 22 of the heat transfer liquid 6, the first circulation path 21 and the second circulation path 22 being arranged to allow a heat exchange between the refrigerant 4 present inside the first circulation path 21 and the heat transfer liquid 6 present inside the second circulation path 22.
• the first heat exchanger 11 comprises several first traffic lanes 21 and several second traffic lanes 22.
• a first traffic lane circulation 21 is interposed between two second circulation paths 22, and a second circulation path 22 is interposed between two first circulation paths 21.
• the first heat exchanger 11 thus comprises an alternation of first circulation paths 21 and second circulation paths traffic 22.
• the heat transfer liquid 6 circulates from the pump 15 to the first heat exchanger 11, then circulates inside the first heat exchanger 11 using the second circulation paths 22 to exchange calories with the refrigerant 4 present at inside the first circulation paths 21, then returns to the pump 15.
• the coolant 4 flows from the compressor 7 to the coolant / outdoor air exchanger 8, then to the expansion member 9.
• the refrigerant 4 then circulates inside the first heat exchanger 11 using the first circulation paths 21 inside which the refrigerant 4 exchanges calories with the heat transfer liquid 6 present inside the second circulation paths 22, then returns to the compressor 7.
• the refrigerant 4 circulates inside the second heat exchanger 12 by using circulation paths inside which the refrigerant 4 exchanges calories with the flow d air 10, then returns to compressor 7.
• the first heat exchanger 11 is generally parallelepiped and includes a cheek 100 which is provided with an inlet for the heat transfer liquid 101 by means of which the heat transfer liquid 6 penetrates inside the first heat exchanger 11.
• the cheek 100 is also provided with an evacuation of the heat-transfer liquid 102 by means of which the heat-transfer liquid 6 is evacuated from the first heat exchanger 11.
• the second circulation paths 22 extend between the admission of the heat transfer liquid 101 and the evacuation of the heat transfer liquid 102.
• the cheek 100 also includes an inlet for the refrigerant fluid 103 by means of which the coolant 4 penetrates inside the first heat exchanger 11 and an outlet for the coolant 104 by means of which the refrigerant 4 is discharged from the first heat exchanger 11.
• the first circulation paths 21 extend between the inlet of the coolant 103 and the outlet of the coolant 104.
• the first heat exchanger 11 is a plate exchanger which comprises a plurality of plates 105, such as the plate 105 illustrated in FIG. 3 or 4.
• the plate 105 mainly extends along a longitudinal axis of elongation Ai.
• the plate 105 comprises a bottom 106 and at least one raised edge 107 which surrounds the bottom 106.
• the raised edge 107 is formed at the periphery of the bottom 106 and the raised edge 107 surrounds the bottom 106.
• the plate 105 is arranged in a generally rectangular bath, the bottom of the bath being made up of the bottom 106 and the edges of the bath being made up of the raised edge 107.
• the raised edge 107 comprises two longitudinal raised edges 108a, 108b formed in screws -to each other and two raised side edges 109a, 109b formed opposite one another.
• the plate 105 comprises four openings 110, in particular circular, which are distributed in pairs at each longitudinal end of the plate 105, and more particularly at each of the corners of the bottom 106 of the plate 105. Two of these openings 110 are configured to communicate with one of the first circulation paths 21 formed on one side of the bottom 106 and the two other openings 110 are configured to communicate with one of the second circulation paths 22 formed on another side of the bottom 106.
• Two of the openings 110 formed at the same longitudinal end of the plate 105 are each surrounded by a collar 120, so that these openings 110 surrounded by this collar 120 extend in a plane offset with respect to a bottom plane P4 in which the bottom 106 is inscribed.
• the two other openings 110 situated at the other longitudinal end of the plate 105 extend in the bottom plane P4.
• Two plates 105 are nested one inside the other and in contact with each other at least via their raised edges 107.
• two plates 105 are stacked one above the other. 'other and provide between them a space which forms a channel 111a, 111b for circulation of the refrigerant 4 or of the heat transfer liquid 6.
• the plate 105 borders via one of its faces, called the first face 118a, a first channel 111a for circulation of one of the coolant 4 and of the heat transfer liquid 6 and via the other of its faces, called the second face 118b, a second channel 111b for circulation of the other of the coolant 4 and heat transfer liquid 6.
• the bottom 106 is provided with a plurality of protrusions 112 which are for example of a frustoconical conformation.
• the bottom 106 includes a rib 113 which is arranged so that the channel 111 has a U-shaped profile.
• the rib 113 is parallel to a direction D of elongation of the longitudinal raised edges 108, the direction D of elongation of the longitudinal raised edges 108 being preferably parallel to the longitudinal axis of elongation Ai of the plate. 105.
• the rib 113 extends between a first longitudinal end 114 and a second longitudinal end 115, the first longitudinal end 114 being in contact with the raised edge 107, and preferably in contact with a first lateral raised edge 109a which the edge comprises. raised 107.
• the second longitudinal end 115 is located at a first non-zero distance Di from the raised edge 107, the first distance Di being taken between the second longitudinal end 115 and the raised edge 107, measured along the axis of longitudinal extension Ai of the plate 105.
• the channel 111a, 111b is shaped like a U whose branches of the U are parallel to the raised longitudinal edges 108a, 108b of the plate 105 and are separated by the rib 113, and whose base of the U adjoins a second lateral edge 109b which is formed longitudinally opposite the first lateral edge 109a.
• the rib 113 is formed at an equal second distance D2 from the two longitudinal edges 108 of the plate 105, the second distance D2 being measured between the rib 113, taken at its center, and one of the raised longitudinal edges 108a, 108b, perpendicularly to the longitudinal elongation axis Ai of the plate 105.
• the rib 113 is offset by a non-zero distance relative to a median plane Pi of the plate 105, the median plane Pi being orthogonal to the bottom 106 and parallel to the longitudinal elongation axis Ai of the plate 105, the distance being measured between the rib 113, taken at its center, and the median plane Pi perpendicular to the latter.
• the raised edge 107 extends in an edge plane P3 which is transverse to the bottom plane P4 in which the bottom 106 extends.
• the lateral raised edges 109a, 109b and the longitudinal raised edges 108a, 108b extend to the interior of respective edge planes P3 which each form with the bottom plane P4 an angle which is between 91 ° and 140 °, preferably between 91 ° and 95 °.
• the plate 105 is made of a metallic material, capable of being pressed to form in particular the protrusions 112 and the rib 113 by stamping the plate 105, the metallic material being chosen from thermally conductive metallic materials, aluminum or aluminum alloy in particular.
• the openings 110 are shaped according to an opening profile Xi, which is circular, seen in a plane parallel to the bottom plane P4.
• the opening 110 is arranged in a first circle Tl, formed around a first center Ci and of first radius Ri.
• the plate 105 is advantageously equipped with a distribution means 300, 400 of the coolant 4 and / or of the heat transfer liquid 6.
• the distribution means 300, 400 is shaped according to a profile of distribution means X2 which is homothetic to the profile d opening of opening 110.
• the distribution means 300, 400 is intended to disturb a flow of the coolant 4 and / or the coolant 6 inside the channels 111a, 111b that the coolant 4 and the coolant 6 occupy respectively.
• the distribution means is also intended to form an obstacle to the flow of the coolant 4 and / or of the heat transfer liquid 6 directly at the outlet of the opening, in particular inside the lower channels 111a, 111b of the first heat exchanger. 11 relative to upper channels 111a, 111b of the first heat exchanger 11, in the position of use of the latter.
• the distribution means 300 comes from material of the plate. It is understood that the distribution means 300 consists of at least one deformation of the plate 105, in particular obtained by stamping the plate, for example formed simultaneously with the protuberances 112 and the rib 113.
• the distribution means 300 comprises at least one projection 301 which emerges from the bottom 106 towards the first channel 111a and which is formed on an arc of a circle Yi.
• the arc of a circle Yi is formed around a second center C2 which is, for example, merged with the first center Ci around which the opening 110 is formed.
• the arc of a circle Yi is of a second radius R2.
• the projections 301 are in plurality, two immediately adjacent projections 301 being separated by a circulation passage 302.
• the circulation passage 302 is a passage formed to allow circulation of the refrigerant 4 or heat transfer liquid 6 between two projections 301.
• the projections 301 are angularly distributed equally around the second center C2.
• the projections 301 being distributed over the arc of a circle Yi so that, on the arc of a circle Yi, the projections 301 are formed in pairs of the same angular sector V from one another, the sector angular V being taken between two respective planes of symmetry Z of the two projections 301.
• the projections 301 are of a respective projection length W taken between two radial ends 303 of projections 301 in a plane parallel to the bottom plane P4, the lengths of projections W being equal to each other.
• the projections 301 are distributed over the arc of a circle Yi so that, on the arc of a circle Yi, the projections 301 are formed two by two at a variable distance V from a pair of projections 301 to the other, the distance V being taken between two respective planes of symmetry Z of the two projections 301.
• the protrusions 301 are of a respective protrusion length W taken between two radial ends 303 of protrusions 301 in a plane parallel to the bottom plane P4, at least two lengths of protrusions W being distinct from each other.
• the projections 301 are distinct from each other in height.
• a height Ht, H2 of a projection 301 is taken between a projection foot 304 which is formed in the bottom plane P4 of the plate 105 and a projection apex 305 formed opposite the projection foot 304.
• the apex projection 305 is formed inside a plane which is parallel to the bottom plane P4 in which the bottom 106 fits.
• the first height Ht of a projection 301 is less than a second height H2 of another projection 301.
• the distribution means 400 comprises a ring 401 which is intended to come into abutment against the collar 120 arranged around the opening 110.
• the ring 401 is an attached part which is intended to be interposed axially between two pairs of successive plates 105, each pair of successive plates 105 comprising a plate 105 provided with a collar 120 and a plate 105 free of collar, in line with the same opening.
• the ring 401 and the plate 105 are assembled by a solder.
• the ring 401 is circular seen from a plane parallel to the bottom plane P4 and is arranged in a second circle T2, formed around a third center C3 and third radius R3.
• the ring 401 comprises a ring 402 which is arranged in the second circle T2.
• the ring 402 is designed to come into abutment against the collar 120 of a plate 105.
• the ring 402 is provided with a plurality of slots 404 which extend from the ring 402 towards the channel 111a, 111b, and preferably from the ring 402 towards the bottom 106 of the immediately successive plate, while being in support against this bottom 106.
• Two slots 404 immediately adjacent are separated by a circulation corridor 405 of the refrigerant 4 or of the heat transfer liquid 6.
• the circulation corridor 405 is a passage formed to allow circulation of the coolant 4 or of the heat transfer liquid 6 between two slots 404.
• the slots 404 are angularly distributed around the third center C3.
• the slots 404 are distributed over the second circle T2 so that, on the second circle T2, the slots 404 are arranged in pairs at the same angular sector V from one another, the angular sector V being taken between two respective Z symmetry planes of the two slots 404.
• the slots 404 are of a respective slot length W taken between two radial ends 406 of slots 404 in a plane parallel to a ring plane P5 in which the ring 402 is inscribed, the slot lengths W being equal between they.
• the slots are distributed over the second circle so that, on the second circle, the slots are arranged in pairs at a variable distance from one pair of slots to the other, the distance being taken between two respective planes of symmetry of the two slots.
• the slots being of a respective length taken between two radial ends of slots in a plane parallel to the bottom plane, at least two lengths of slots are distinct from each other.
• the slots 404 are of identical height.
• a height H of a slot 404 is taken between a slot base 407 integral with the ring 402 and a slot top 408 formed opposite the slot base 407.
• the slot top 408 is formed inside a plane which is parallel to the ring plane P5.
• the ring 401 comprises a first annular surface Si formed by an axial edge 409 of the ring 401, and a second annular surface S2 formed by a terminal edge 410 of each of the slots 404.
• the collar 120 delimits a housing which receives the ring 402 of the ring 401, the ring 401 being designed to be assembled with the plate 105 by brazing the ring 402 with the collar 120. More particularly, the first annular surface Si is in contact with the collar 120 of the first plate 105, while the second annular surface S2 is in contact with the bottom 106 of the second plate 105.
• the first heat exchanger 11 is shown partially and in the position of use in which a collector 30, formed of the openings 110 arranged one above the other, extends vertically along an elongation axis A2 of the collector 30.
• the collector 30 is formed parallel to a terrestrial gravity axis G.
• the third center C3 of each of the rings 401 and the first center Ci of each of the openings 110 provided with ring 401 are aligned along the axis of elongation A2 of the manifold 30.
• the first heat exchanger 11 here comprises, schematically, four first tubes 123a which are provided with the distribution means 400 and four second tubes 123b which are free from the distribution means 400.
• the second tubes 123b are upper tubes which overhang the first tubes 123a, lower. It is understood that the distribution means 400 form a plug against a rapid flow of the coolant 4 or the heat transfer liquid 6 inside the manifold 3, then inside the first tubes 123a which are preferably supplied in refrigerant 4 or in heat transfer liquid in a first heat exchanger of the prior art.
• the second heat exchanger 12 is generally parallelepiped and includes a cheek 100 which is provided with an inlet for the refrigerant fluid 103 by means of which the coolant fluid 4 penetrates inside the second heat exchanger 12 and an evacuation of the refrigerant 104 via which the refrigerant 4 is evacuated from the second heat exchanger 12.
• the circulation paths extend between the intake of the refrigerant 103 and the evacuation of the refrigerant 104.
• the second heat exchanger 12 is intended to modify a temperature of the air flow 10.
• the second heat exchanger 12 is a plate exchanger which comprises a plurality of plates 205, such as the plates 205 illustrated in FIG. 11 or 12.
• the plate 205 mainly extends along a longitudinal axis of elongation A1.
• the plate 205 comprises a bottom 206 and at least one raised edge 207 which surrounds the bottom 206.
• the raised edge 207 is formed at the periphery of the bottom 206 and the raised edge 207 surrounds the bottom 206.
• the plate 205 is arranged in a generally rectangular bath, the bottom of the bath being made up of the bottom 206 and the edges of the bath being made up of the raised edge 207.
• the raised edge 207 comprises two raised longitudinal edges 208a, 208b arranged opposite -vis from one another and two raised side edges 209a, 209b formed opposite one another.
• the plate 205 comprises two openings 210, in particular circular, which are distributed at each longitudinal end of the plate 205.
• One of these openings 110 is configured to communicate with a first circulation path formed on one side of the bottom 206.
• One of these openings 210 is surrounded by a collar 220, so that this opening 210 surrounded by this collar 220 extends in a plane offset relative to a bottom plane P4 in which the bottom 206 is inscribed.
• the other opening 210 located at the other longitudinal end of the plate 205 extends in the bottom plane P4.
• Two plates 205 are nested one inside the other and in contact with each other at least via their raised edges 207.
• two plates 205 are stacked one in the other and provide a space between them which forms a first channel 111a for circulation of the coolant 4.
• the plate 205 borders, via one of its faces, called the first face 218a, the first channel 211a for circulation of the refrigerant 4 and via the other of its faces, called the second face 218b, a second channel 111b inside which the air flow 10 circulates.
• the bottom 206 is provided with a plurality of protrusions 212 which are for example of a frustoconical conformation.
• the raised edge 207 extends in an edge plane P3 which is transverse to the bottom plane P4 in which the bottom 206 extends.
• the lateral raised edges 209a, 209b and the longitudinal raised edges 208a, 208b extend to the interior of respective edge planes P3 which each form with the bottom plane P4 an angle which is between 91 ° and 140 °, preferably between 91 ° and 95 °.
• the plate 205 is made of a metallic material, capable of being stamped to form in particular the protrusions 212 by stamping the plate 205, the metallic material being chosen from thermally conductive metallic materials, aluminum or aluminum alloy in particular.
• the openings 210 are shaped according to an opening profile Xi, which is circular, seen in a plane parallel to the bottom plane P4.
• the opening 210 is arranged in a first circle Tl, formed around a first center Ci and of first radius Ri.
• the plate 205 is advantageously equipped with a distribution means 300, 400 of the refrigerant 4.
• the distribution means 300, 400 is shaped according to a profile of distribution means X2 which is homothetic to the opening profile Xi of the opening 210.
• the distribution means 300, 400 is intended to disturb a flow of the coolant 4 inside the first channel 211a that the coolant 4 occupies.
• the distribution means 300, 400 is also intended to form an obstacle to the flow of the coolant 4 directly at the outlet of the opening 210, in particular inside the first lower channels 211a of the second heat exchanger 12 relative to first upper channels 211a of the second heat exchanger 12, in the position of use of the latter.
• the distribution means 300 comes from material of the plate. It is understood that the distribution means 300 consists of at least one deformation of the plate 205, in particular obtained by stamping the plate 205, for example formed simultaneously with the protuberances 112.
• the distribution means 300 illustrated in FIG. 11 includes the same characteristics as the distribution means in FIGS. 5 to 7. It is understood that the characteristics and advantages of the distribution means 300 equipping the plate 105 shown in FIG. 3 are fully transposable for the distribution means 300 fitted to the plate 205 shown in Figure 11 and provide the same effects.
• the distribution means 400 comprises a ring 401 which is designed to come into contact with the collar 220 arranged around the opening 210.
• the ring 401 is an insert which is interposed axially between two pairs of successive plates 205 , each pair of successive plates 205 comprising a plate 205 provided with a collar 220 and a plate 205 free of collar, along the same collector.
• the ring 401 and the plate 205 are assembled by a solder.
• the distribution means 400 illustrated in FIG. 12 includes the same characteristics as the distribution means in FIGS. 8 and 9. It is understood that the characteristics and advantages of the distribution means 400 equipping the plate 105 shown in FIG. 4 are fully transposable for the distribution means 400 equipping the plate 205 shown in Figure 12 and provide the same effects.
• the invention achieves well the goals which it had set itself, by making it possible to homogenize the heat exchanges over the entire width of the plate, thus avoiding the zones of least exchange, for example at least inside a peripheral portion of the circulation channel 111, 211 at least partially surrounding the openings 110, 210 of the plate 105, 205.
• the invention cannot however be limited to the means and configurations exclusively described and illustrated, and also applies to all means or configurations, equivalent and to any combination of such means or configurations.
• the invention has been described here in its application to a refrigerant heat exchanger / coolant or air, it goes without saying that it applies to any shape and / or size of the plate or to any type of fluid circulating along the plate according to the invention.

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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)

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• 2018
  • 2018-09-25 FR FR1858763A patent/FR3086378B1/fr active Active
• 2019
  • 2019-09-25 US US17/279,909 patent/US20210341228A1/en active Pending
  • 2019-09-25 WO PCT/FR2019/052268 patent/WO2020065223A1/fr unknown
  • 2019-09-25 EP EP19795274.0A patent/EP3857151A1/de active Pending
  • 2019-09-25 CN CN201990001177.XU patent/CN217424074U/zh active Active

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