WO2021001614A1 - Plate constituting a heat exchanger and heat exchanger comprising at least one such plate - Google Patents

Plate constituting a heat exchanger and heat exchanger comprising at least one such plate Download PDF

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Publication number
WO2021001614A1
WO2021001614A1 PCT/FR2020/051089 FR2020051089W WO2021001614A1 WO 2021001614 A1 WO2021001614 A1 WO 2021001614A1 FR 2020051089 W FR2020051089 W FR 2020051089W WO 2021001614 A1 WO2021001614 A1 WO 2021001614A1
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WO
WIPO (PCT)
Prior art keywords
plate
protuberances
branch
series
fluid
Prior art date
Application number
PCT/FR2020/051089
Other languages
French (fr)
Inventor
Julien Tissot
Kamel Azzouz
Michael LISSNER
Cédric DE VAULX
Patrick LEBLAY
Sébastien Garnier
Original Assignee
Valeo Systemes Thermiques
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2021001614A1 publication Critical patent/WO2021001614A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the 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
    • 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

Definitions

  • the present invention relates to the constituent plates of a heat exchanger. Its object is such a plate and a heat exchanger comprising such a plate.
  • the motor vehicle is equipped with an installation which comprises a refrigerant circuit inside which circulates a refrigerant fluid and a coolant circuit inside which circulates a coolant liquid.
  • the refrigerant circuit comprises a compressor for compressing the refrigerant fluid, a heat exchanger for cooling the refrigerant fluid at constant pressure, an expansion member to allow expansion of the refrigerant fluid and a heat exchanger which is arranged to allow heat transfer between the refrigerant and the heat transfer liquid.
  • the heat exchanger is an exchanger formed of plates stacked and joined together to form a tube delimiting a circulation channel for the refrigerant or heat transfer liquid.
  • the plate comprises at least two openings for supplying the circulation channel with heat transfer liquid or coolant.
  • the circulation channel offers a section of passage for the heat transfer liquid or the refrigerant fluid which is a surface taken perpendicular to a plane in which the plate extends and
  • One problem lies in a poor distribution of the refrigerant and / or the heat transfer liquid inside the circulation channel. Such poor distribution reduces the efficiency of heat transfer between the refrigerant and the coolant.
  • protuberances inside the circulation channel to disturb a flow of the refrigerant fluid and / or heat transfer liquid inside the drainage channel.
  • the protuberances result from a deformation of at least one of the plates.
  • An object of the present invention is to provide a constituent plate of a heat exchanger which allows an optimization of the distribution of the refrigerant fluid and / or of the heat transfer liquid inside the circulation channel which the plate partially delimits.
  • 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 fluid and a coolant liquid, such as a heat exchanger interposed between a refrigerant fluid circuit and a heat transfer liquid circuit, ie a heat exchanger between a refrigerant fluid and an air flow.
  • the present invention relates to a constituent plate of a heat exchanger and intended to delimit at least one channel for circulating a fluid, the plate comprising a bottom and at least one raised edge which surrounds the bottom, the plate comprising at least at least one inlet opening and one outlet opening, the plate comprising at least one rib defining a "U" profile of the circulation channel, the "U" profile having an elbow connecting a first branch to a second branch, the plate comprising a first series of protuberances formed in the first branch and / or in the second branch and a second series of protuberances disposed in the elbow.
  • At least one protuberance of the first series of protrusions is configured to deflect fluid from its direction.
  • At least one protuberance of the second series of protrusions are configured to guide fluid from the first branch to the second branch.
  • the heat exchanger includes at least one plate.
  • This plate is made of a metallic material, for example suitable for being stamped in order in particular to form the protuberances by stamping of the plate.
  • This metallic material is chosen from thermally conductive metallic materials, such as aluminum.
  • the plate has a bottom and a raised edge.
  • the raised edge extends into at least one edge plane that is transverse to the bottom plane into which the bottom extends.
  • the raised edge comprises at least two longitudinal raised edges formed opposite one another and at least two lateral raised edges formed opposite one another.
  • the two longitudinal raised edges and the two lateral raised edges together form a peripheral periphery at the bottom.
  • the lateral raised edges and the longitudinal raised edges extend inside respective planes which each form with the bottom plane an angle which is between 91 ° and 140 °, preferably between 91 ° and 95 °.
  • the plate comprises at least four openings, distributed two by two at each of its longitudinal ends. Two of these openings are configured to communicate with a first fluid circuit provided on one side of the bottom.
  • the side of the bottom considered here is that forming a substantially right angle with the longitudinal raised edges and the lateral raised edges of the plate. These two openings correspond to the inlet opening and the fluid outlet opening.
  • the other two openings are configured to communicate with a second fluid circuit provided on the other side of the bottom of the plate.
  • the four openings are notably circular.
  • the plate comprises a rib making it possible to separate the first branch and the second branch of the "U" profile.
  • the rib is parallel to a direction of elongation of the longitudinal raised edges. It extends between a first longitudinal end and a second longitudinal end of the plate.
  • the first longitudinal end is in contact with the edge raised and preferably in contact with a first lateral raised edge that includes the raised edge.
  • the second longitudinal end is located at a first non-zero distance from the raised edge.
  • the rib allows the separation of the first branch of the "U" profile of the fluid circulation channel and the second brandy.
  • the first branch and the second branch are connected by means of an elbow.
  • a first series of protuberances emerge from the bottom of the plate in the first branch or in the second branch.
  • a second set of protuberances emerge from the bottom of the plate in the elbow.
  • the protuberances of the first series of protrusions and the protuberances of the second series of protuberances may be identical in shape and / or in volume in particular, except for the manufacturing tolerance. Said protuberances may also be different from one another, in particular in shape and in volume.
  • a protrusion of the first set of protrusions is configured to allow fluid to be deflected from its original path.
  • the protuberances make it possible to disturb the fluid circulating in the channel.
  • the protuberance of the first series of protuberances configured to deflect the fluid from its direction of flow makes it possible to increase the disturbance of the fluid, thus increasing the efficiency of the heat exchange between the two circulating fluids each on one side of the plate bottom.
  • a protrusion of the second series of protrusions is configured to direct fluid from the first branch to the second branch, leading it through the elbow. This protuberance then allows a better flow of the fluid in the plate.
  • the protuberances emerge from the bottom of the plate towards the channel.
  • the protuberances emerge from the bottom of the plate in the direction of the raised edge, towards the fluid circulation channel. Obtained by stamping, the protuberances of the plate consist of protuberances allowing the disruption of the fluid flowing along its walls. Arranged thus, the protuberances are in contact with the fluid and therefore cause the agitation of its flow,
  • At least one protuberance of the first series and / or of the second series has an oblong shape.
  • the protuberance of the first series and / or of the second series of protuberances is of elongated shape and has rounded angles. Such a form of protuberance makes it possible, in addition to disturbing the fluid during its flow, to guide it within the circulation channel. Conducting the fluid in the circulation channel allows it to take it to areas that would not be crossed if it were to follow its direction of flow.
  • the oblong shape of the protuberance is rectilinear.
  • the rectilinear oblong shape helps guide the fluid.
  • the first series of protuberances of rectilinear oblong shape can be arranged in the second branch of the channel.
  • the third series of protuberances has a plurality of rectilinear oblong protuberances emerging from the second branch of the channel. These protuberances are oriented to disturb the fluid.
  • the protuberances are arranged obliquely, that is to say that the elongated edges of the protuberances are oriented between 25 ° and 85 ° of the longitudinal raised edges of the plate, in particular 45 °.
  • these protrusions are arranged to allow the flow of fluid from the elbow to the outlet opening.
  • protuberances advantageously arranged in the second branch, make it possible to deflect the fluid from its direction of flow and thus to create disturbances in the fluid.
  • These protuberances also allow the flow of fluid from the elbow to the outlet opening.
  • the first series of protuberances can also be distributed similarly in the first branch of the channel. In this case, the protuberances allow the flow of the fluid from the inlet opening to the elbow.
  • the second series of protuberances of rectilinear oblong shape can be arranged in the bend of the channel.
  • the bend of the channel has a plurality of rectilinear oblong protuberances. These protuberances are then oriented to form a conduit for the circulation of the fluid, in order to allow its routing from the first branch to the second branch of the channel.
  • protrusions and the second series of protrusions have a plurality of protuberance shapes.
  • the oblong shape is curved.
  • the curved oblong shape helps guide the fluid in the circulation channel, while reducing the number of protuberances.
  • the plate advantageously has a plurality of curved oblong protuberances which can be distributed over the first branch and / or on the elbow and / or on the second branch, in other words, the
  • protuberances of curved oblong shapes may be distributed in the first series of protrusions and / or in the second series of
  • the first set of curved oblong protrusions on the first leg distribute fluid throughout the first leg, disrupting the fluid flowing between the inlet opening and the elbow.
  • the first series of curved oblong protuberances of the second branch allow the fluid to be distributed over the whole of the second branch, disturbing the fluid flowing between the elbow and the outlet opening.
  • the curved oblong protuberances of the elbow allow fluid to be conducted from the first branch to the second branch of the canal.
  • first series of protuberances and the second series of protuberances have a plurality of protuberance shapes.
  • the plate comprises a third series of protuberances.
  • the third set of protuberances can emerge from the first branch or the second branch of the canal.
  • the third series springs from the first branch of the fluid circulation channel.
  • This third series has an oblong shape which can be rectilinear and / or curved.
  • the third series of protuberances it is quite possible for the third series of protuberances to have a plurality of shapes of protuberances.
  • first series of protrusions, the second series of protuberances as well as the third series of protuberances of rectilinear oblong and / or curved oblong shape can be arranged in any of the possible combinations in the first branch, in the elbow and in the second branch.
  • At least one third series protrusion is configured to guide fluid from the inlet opening to the elbow.
  • the rectilinear and / or curved oblong shape helps guide the fluid.
  • the third series of protuberances of rectilinear oblong shape can be arranged in the first branch of the channel.
  • a protuberance of rectilinear and / or curved oblong shape may be arranged near the fluid inlet opening, in such a way that it allows the guiding of this fluid to the desired area.
  • the protuberance is preferably disposed in the direction of the flow of the fluid. That is to say, the elongated edges of said protuberance are arranged parallel to the longitudinal raised edges of the plate.
  • a plurality of protuberances of rectilinear and / or curved oblong shape emerge from the bottom of the plate, in the first branch.
  • the protuberances around the inlet opening are arranged so that they allow the distribution of the fluid over the whole of the first branch.
  • the protrusions at any other location are arranged parallel to the raised longitudinal edges, to guide the fluid into the first branch and lead it from the inlet opening to the bend of the channel.
  • the first branch and / or the second branch comprises at least one protuberance of the first series of protuberances and at least one protuberance of the third series of protuberances.
  • the first branch and / or the second branch has a combination of protuberances.
  • protrusions and protrusions of the third series of protrusions allow the flow of the fluid from the inlet opening to the elbow and / or from the elbow to the outlet opening, but also a deflection of the fluid, causing its disturbance and therefore better heat transfer between each of the fluids on one side of the plate.
  • the plate comprises an inlet orifice and an outlet of a second fluid arranged on a first lateral edge of the plate, the inlet opening and the outlet opening of the plate being arranged on a second lateral edge of the plate.
  • the plate comprises at least four openings, distributed two by two at each of its longitudinal ends. Two of these openings are configured to communicate with a first fluid circuit provided on one side of the bottom.
  • the side of the bottom considered here is that forming a substantially right angle with the longitudinal raised edges and the raised edges sides of the plate. These two openings correspond to the inlet opening and the outlet opening of the fluid.
  • the other two openings are configured to communicate with a second fluid circuit provided on the other side of the bottom of the plate.
  • the four openings are notably circular.
  • the rib emerges from the first lateral edge of the plate, between the inlet opening and the fluid outlet opening and extends longitudinally over at least part of the plate, a free end of the rib being disposed at a non-zero distance from the second lateral edge of the plate,
  • the plate comprises a rib making it possible to separate the first branch and the second branch of the "U" profile.
  • the rib is parallel to a direction of elongation of the longitudinal raised edges. It extends between a first longitudinal end and a second longitudinal end of the plate.
  • the first longitudinal end is 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 is located at a first non-zero distance from the raised edge.
  • the rib allows the separation of the first branch from the "U" profile of the fluid circulation channel and the second branch.
  • the first branch and the second branch are connected by means of an elbow.
  • a subject of the invention is also a heat exchanger comprising at least one plate as described above.
  • the heat exchanger comprises a first plate and a second plate delimiting a first circuit configured to be traversed by a refrigerant fluid, the second plate and a third plate delimiting a second pipe configured to be traversed. by a heat transfer liquid, the first plate, the second plate and the third plate being in accordance with any one of the characteristics of the first subject of the invention and nested in each other.
  • the heat exchanger comprises two plates together delimiting the fluid circulation channel.
  • the first plate includes any one of the preceding features.
  • the second plate can include the same characteristics as the first plate or else be different.
  • the first plate and the second plate are nested one inside the other and a space, which forms the fluid circulation channel, is formed between the two plates.
  • 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 heat exchanger participating in the installation shown in Figure 1;
  • FIG. 3 is a front view of a constituent plate of the heat exchanger illustrated in FIG. 2;
  • FIG.4 is a front view of a plate according to another embodiment of the invention, constituting the heat exchanger in Figure 2;
  • FIG.5 is a front view of a plate according to yet another embodiment of the invention, constituting the heat exchanger in FIG.
  • FIG. 6 is a cross-sectional view of any of the plates illustrated above.
  • characteristics, variants and different embodiments of the invention may be associated with each other, in various combinations, as long as they are not incompatible or exclusive of each other. It is in particular possible to imagine variants of the invention comprising only a selection of characteristics described later in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer an advantage. technique or to differentiate the invention from the state of the prior art.
  • a motor vehicle is equipped with an element 1 which should be cooled or heated, 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 designed to store electrical energy, a device for storing calories and / or figures or the like.
  • the motor vehicle is equipped with an installation 2 which comprises a refrigerant fluid circuit 3 inside which circulates a refrigerant fluid 4, carbon dioxide for example or the like, and a coolant circuit 5 to l 'Inside which circulates a coolant 6, in particular glycol water or the like.
  • the installation 2 comprises at least one heat exchanger 11, 12 according to the present invention.
  • Installation 2 is described below, but the characteristics of installation 1 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 distinct structural characteristics and / or different operating methods 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
  • the coolant circuit 3 comprises a second heat exchanger 12 which is arranged to allow thermal transfer between the refrigerant fluid 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 connection with a heat exchanger 14, the heat exchanger 14 being able to modify a temperature of the element 1, in particular by direct contact made between the element 1 and the heat exchanger 14 , the heat exchanger 14 being part of the coolant circuit 5.
  • the heat transfer liquid circuit 5 comprises a pump 15 for circulating the heat transfer liquid 6 inside the heat transfer liquid circuit 5.
  • the heat transfer liquid circuit 5 comprises the first heat exchanger 11 which also constitutes the refrigerant circuit. 3.
  • the first heat exchanger 11 comprises at least a first circulation path 21 of the refrigerant 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 heat exchange between the refrigerant 4 present inside the first circulation path 21 and the coolant 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 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 the first circulation path 21 and of the second circulation path 22.
  • the coolant 6 circulates from the pump 15 to the first heat exchanger 11, then circulates inside the first heat exchanger 11 by taking the second circulation paths 22 to exchange calories with refrigerant 4 present inside the first circulation paths 21, then returns to the pump 15.
  • the refrigerant 4 circulates from the compressor 7 to the refrigerant / outside air exchanger 8, then to the expansion member 9.
  • the refrigerant 4 then circulates inside the first heat exchanger 11 by taking 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 taking circulation paths inside which the refrigerant 4 exchanges calories with the flow d air 10, then returns to compressor 7.
  • the first heat exchanger it is generally parallelepipedal and comprises a cheek 100 which is provided with an inlet of the coolant 101 through which the coolant enters the interior of the first heat exchanger 11
  • the cheek 100 is also provided with an outlet for the coolant liquid 102 through which the coolant liquid 6 is discharged out of the first heat exchanger 11.
  • the second circulation paths 22 extend between the inlet of the liquid. coolant law and the discharge of the coolant liquid 102.
  • the cheek 100 also includes an inlet of the coolant 103 through which the coolant 4 enters inside the first heat exchanger 11 and an outlet of the coolant 104 through which the coolant 4 is discharged out of the first heat exchanger 11.
  • the first circulation paths 21 extend between the adm ission of refrigerant 103 and discharge of refrigerant 104.
  • the plate 16 extends mainly along a longitudinal axis of elongation A1.
  • the plate 16 comprises a base 160 and at least one raised edge 161 which surrounds the base 160.
  • the raised edge 161 is formed at the periphery of the base 160 and the raised edge 161 surrounds the base 160.
  • the plate 16 is arranged in a generally rectangular bathtub, the bottom of the bathtub consisting of the bottom 160 and the edges of the bathtub consisting of the raised edge 161.
  • the raised edge 161 comprises a first edge. longitudinal raised 162 and a second raised longitudinal edge 163 arranged opposite each other as well as a first raised lateral edge 164 and a second raised lateral edge 165 arranged opposite each other the other.
  • the plate 16 comprises four openings 25, in particular circular, including an inlet opening 250 for the fluid and an outlet opening 260 for the fluid, which are distributed two by two at each longitudinal end of the plate 16, and more particularly at each of the bottom angles 166 of the plate 16.
  • the inlet opening 250 and the outlet opening 260 are configured to communicate with one of the first circulation paths formed on one side of the bottom 160 and the other two openings 25 , respectively 270 and 280, are configured to communicate with one of the second circulation paths provided on the other side of the bottom 160.
  • Two plates 16 are nested one inside the other and in contact with one another at least via their raised edge 161. In other words, two plates 16 are stacked one above and spare between them a space which forms a channel 17 for circulating the refrigerant 4 or the coolant 6.
  • the bottom 160 is provided with a plurality of protuberances 18 which with at least the bottom 160 and the raised edge 161 define a circulation channel 17 for the refrigerant 4 or the heat transfer liquid 6.
  • the bottom 160 comprises a rib 19 which is arranged so that the channel 17 has a U-profile.
  • the rib 19 is parallel to a direction D of elongation of the first longitudinal raised edge 162 and of the second longitudinal raised edge 163, the direction D elongation of the first longitudinal raised edge 162 and of the second longitudinal raised edge 163 being preferably parallel to the longitudinal axis of elongation A1 of the plate 16.
  • the rib 19 extends between a first longitudinal end 20 and a second longitudinal end 26, the first longitudinal end 20 being in contact with the raised edge 161 and preferably in contact with the first lateral raised edge 164 which the raised edge 16 includes.
  • the second longitudinal end 26 is located at a first non-zero distance D1 from the edge raised 161, the first distance D1 being taken between the second longitudinal end 26 of the rib 19 and the raised edge 161, measured along the all axis longitudinal embedding A1 of the plate 16.
  • the channel 17 is shaped in a U, a first branch 22 of which of the U is parallel to a second branch 23 of the U, the first branch 22 and the second branch 23 being connected by an elbow 24.
  • the first branch 22 and the second branch 23 are parallel to the first longitudinal raised edge 162 and to the second longitudinal raised edge 163 of the plate 16.
  • the first branch 22 and the second branch 23 are separated by the rib 19.
  • the elbow 24 for its part adjoins the second lateral raised edge 165 which is provided longitudinally opposite the first lateral raised edge 164.
  • the rib 19 is provided for example at an equal second distance D2 from the first longitudinal raised edge 162 and from the second longitudinal raised edge 163 of the plate 16.
  • the rib 19 is provided at a second distance D2 from the first longitudinal raised edge 162 which may be greater or less than a third distance D3 taken between the rib 19 and the second longitudinal raised edge 163 of the plate 16.
  • the second distance D2 and / or the third distance D3 are measured between the rib 19, taken at its center, and one of the first longitudinal raised edge 162 and / or the second longitudinal raised edge 163, perpendicular to the longitudinal axis of elongation A1 of the plate 16.
  • the protuberances 18 are divided into at least two series, a first series 180 of protuberances 18 arranged, according to one embodiment visible in FIG. 3, in the second branch 23 and the second series 181 of protuberances 18 arranged in the elbow 24. At least one protuberance 18 of the first series 180 is configured to deflect the refrigerant 4 or the coolant 6 from its direction of flow.
  • the first series 180 and the second series 181 each comprise a plurality of protuberances 18 of rectilinear oblong shape. Indeed, the protuberances 18 have an elongated shape with rounded angles. Emerging from bottom 160 of plate 16, these
  • protrusions 18 are used to disrupt as well as to orient the fluid flowing in the channel 17.
  • At least one protuberance 18 of the first series 180 disposed in the second branch 23 is configured to deflect the refrigerant 4 or the coolant 6 from its direction of flow, and thus disturb it.
  • the first series 180 comprises a plurality of protuberances 18 of rectilinear oblong shape. These are arranged obliquely.
  • the elongated edges 183 of the protrusions 18 are oriented between 25 ° and 85 ° of the second longitudinal raised edge 163.
  • the elongated edges 183 of the protrusions 18 are oriented at 45 ° of the second longitudinal raised edge 163.
  • the first series 180 can also include protuberances 18 of circular shape.
  • the protuberances 18 of circular shape emerge from the bottom 160 of the plate 16 near the rib 19 and the second longitudinal raised edge 163.
  • the second series 181 of protuberances 18 distributed in the elbow 24 is configured to guide the fluid from the first branch 22 to the second branch 23.
  • the elbow 24 comprises a plurality of protuberances 18 of rectilinear oblong shape.
  • the protuberances 18 of the elbow 24 are arranged to allow the coolant 4 or the coolant 6 to bypass the second longitudinal end 26 of the rib 19.
  • the protuberances 18 are arranged in three different orientations.
  • the first part 240 of the protuberances 18 of the bend 24 is oriented at 45 ° from the first longitudinal raised edge 162 of the plate 16.
  • the first part 240 therefore allows the refrigerant 4 or the coolant 6 to be deflected from its direction of. flow.
  • protrusions 18 of the elbow 24 is oriented parallel to either of the first side raised edge 164 or the second side raised edge 165.
  • the protuberances 18 of this second part 241 allow the refrigerant 4 or the heat transfer liquid 6 to be guided towards a third part 242 of protuberances 18 of the elbow 24.
  • the third part 242 of protuberances 18 of the elbow 24 comprises a plurality of protuberances 18 oblong rectilinear. These protuberances are oriented at 45 ° from the second longitudinal raised edge 163 of the plate 16.
  • This third part 242 makes it possible to guide the fluid from the second part 241 to the second branch 23.
  • the first part 240, the second part 241 and the third part 242 together make it possible to form the elbow 24 and therefore to guide the fluid from the first branch 22 to the second branch 23.
  • the second series 181 of protuberances 18 may also include protuberances 18 of frustoconical shape. These protuberances 18 of frustoconical shape are advantageously arranged between the two openings 25, then disturbing the refrigerant 4 or the coolant 6.
  • the plate 16 comprises a third series 182 of protuberances 18.
  • the protuberances 18 of this third series 182 are distributed in the first branch 22 of the channel 17.
  • the protuberances 18 of this third series 182 are configured to guide the refrigerant 4 or the heat transfer liquid 6 from the inlet opening 250 towards the elbow 24.
  • protuberances 18 of rectilinear oblong shape are distributed around the The inlet opening 250.
  • the protuberances 18 disposed in the vicinity of the inlet opening 250 are disposed such that the refrigerant 4 or heat transfer liquid 6 is evenly distributed over the first branch 22.
  • the third series 182 of protuberances 18 comprises
  • the protuberances 18 are juxtaposed to each other and arranged in several rows, each row being parallel to any one of the first longitudinal raised edge 162 or of the second longitudinal raised edge 163.
  • protrusions 18 are configured to guide the refrigerant 4 or the coolant 6 from the inlet opening 250 to the elbow 24.
  • the plate 16 is made of a metallic material, such as aluminum, suitable for being stamped in order to form the protuberances 18 in particular by
  • the metallic material is chosen from thermally conductive metallic materials.
  • the first series 180 and the second series 181 can each comprise a plurality of protuberances 18 of curved oblong shape.
  • the protuberances 18 have an elongated shape with rounded angles with a curvature over their length.
  • these protuberances 18 make it possible to disturb and orient the fluid flowing in channel 17.
  • At least one protuberance 18 of the first series 180 disposed in the second branch 23 is configured to deflect the refrigerant 4 or the coolant 6 from its direction of flow, and thus disturb it.
  • the first series 180 comprises a plurality of protuberances 18 of curved oblong shape. These the latter are arranged obliquely, so as to deflect the fluid from its rectilinear path.
  • the first series 180 can also include protuberances 18 of circular shape.
  • the protuberances 18 of circular shape emerge from the bottom 160 of the plate 16 near the rib 19 and the second longitudinal raised edge 163.
  • the second series 181 of protuberances 18 distributed in the elbow 24 is configured to guide the fluid from the first branch 22 to the second branch 23.
  • the elbow 24 comprises a plurality of protuberances 18 of rectilinear oblong shape.
  • the protuberances 18 of the elbow 24 are arranged to allow the refrigerant 4 or the coolant 6 to bypass the second longitudinal end 26 of the rib 19.
  • the protuberances 18 are arched in order to accompany the fluid from the first branch 22 towards the second branch 23.
  • the second series 181 of protuberances 18 may also include protuberances 18 of frustoconical shape. These protuberances 18 of frustoconical shape are advantageously arranged between the two openings 25, then disturbing the refrigerant 4 or the coolant 6.
  • the plate 16 can comprise a third series 182 of protuberances 18 of oblong shape curved on the first branch 22 of the channel 17. These protuberances are configured to guide the refrigerant 4 or the coolant 6 from the inlet opening 250 towards the outlet. elbow 24.
  • protuberances 18 of curved oblong shape are distributed around the inlet opening 250.
  • the protuberances 18 disposed in the vicinity of the inlet opening 250 are disposed such that the refrigerant 4 or heat transfer liquid 6 is evenly distributed within the first branch 22.
  • the third series 182 of protuberances 18 comprises
  • the protrusions 18 are juxtaposed there with one another and arranged in several rows, each row being parallel to any one of the first longitudinal raised edge 162 or of the second longitudinal raised edge 163.
  • These protuberances 18 are configured to guide the refrigerant 4. or the heat transfer liquid 6 from the inlet opening 250 to the elbow 24.
  • three plates 16 are nested one inside the other so that the raised edge 161 of a plate 16 is embedded inside the raised edge 161 of the immediately successive plate 16 and in such a way that that the bottom 160 of a plate 16 is in contact with the protuberances 18 of the immediately successive plate 16.
  • Such a stack of the plates 16 is also produced so that the bases 160 of the plates 16 are arranged parallel to each other in a distant and stepped superposition of the bases 160.
  • the raised edges 161 of two plates 16 fitted one into the other. the other are in contact and are intended to be brazed together to seal the channel 17 thus formed between two adjacent plates 16.
  • Two adjacent plates 16 are also associated so that the ribs 19 of the two adjacent plates 16 are superimposed on each other, the median planes Pi of the adjacent plates 16 being superimposed on each other.
  • the present invention proposes a plate for a plate heat exchanger, which comprises means for bringing the fluid in question into zones which are usually not correctly supplied with fluid.
  • the efficiency of heat exchange is thus enhanced and the temperature is more homogeneous over the entire plate.
  • the invention should not however be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configuration and to any technical combination operating such means.
  • the shape of the plate or the protrusions can be changed without harming the invention, insofar as the plate, in fine, fulfills the same functionalities as those described in this document.

Abstract

The invention relates to a plate (16) constituting a heat exchanger (11), which is intended to delimit at least one channel (17) for the circulation of a fluid, the plate (16) comprising a bottom (160) and at least one raised edge (161) which surrounds the bottom (160), the plate (16) comprising at least one rib (19) defining a U-shaped profile of the circulation channel (17), wherein the U-shaped profile has a bend (24) connecting a first branch (22) to a second branch (23), the plate (16) comprising a first series (180) of protrusions (18) arranged in the first branch (22) and/or in the second branch (23) and a second series (181) of protrusions (18) arranged in the bend (24).

Description

Description
Figure imgf000003_0001
Description
Figure imgf000003_0001
La présente invention se rapporte aux plaques constitutives d’un échangeur de chaleur. Elle a pour objet une telle plaque et un échangeur de chaleur comportant une telle plaque. The present invention relates to the constituent plates of a heat exchanger. Its object is such a plate and a heat exchanger comprising such a plate.
Dans le domaine automobile, il est courant d'avoir à modifier une In the automotive industry, it is common to have to modify a
température d’un élément, tel qu’un moteur électrique, une batterie, un dispositif de stockage de calories et/ou de frigories ou analogue. A cet effet, le véhicule automobile est équipé d’une installation qui comprend un circuit de fluide réfrigérant à l’intérieur duquel circule un fluide réfrigérant et un circuit de liquide caloporteur à l'intérieur duquel circule un liquide caloporteur. Le circuit de fluide réfrigérant comprend un compresseur pour comprimer le fluide réfrigérant, un échangeur thermique pour refroidir le fluide réfrigérant à pression constante, un organe de détente pour permettre une détente du fluide réfrigérant et un échangeur de chaleur qui est agencé pour permettre un transfert thermique entre le fluide réfrigérant et le liquide caloporteur. temperature of an element, such as an electric motor, a battery, a calorie and / or frigory storage device or the like. For this purpose, the motor vehicle is equipped with an installation which comprises a refrigerant circuit inside which circulates a refrigerant fluid and a coolant circuit inside which circulates a coolant liquid. The refrigerant circuit comprises a compressor for compressing the refrigerant fluid, a heat exchanger for cooling the refrigerant fluid at constant pressure, an expansion member to allow expansion of the refrigerant fluid and a heat exchanger which is arranged to allow heat transfer between the refrigerant and the heat transfer liquid.
L’échangeur de chaleur est un échangeur formé de plaques empilées et jointes ensemble pour former un tube délimitant un canal de circulation du fluide réfrigérant ou du liquide caloporteur. La plaque comprend au moins deux ouvertures pour alimenter le canal de circulation en liquide caloporteur ou en fluide réfrigérant. Le canal de circulation offre une section de passage au liquide caloporteur ou au fluide réfrigérant qui est une surface prise perpendiculairement à un plan dans lequel s'étend la plaque et The heat exchanger is an exchanger formed of plates stacked and joined together to form a tube delimiting a circulation channel for the refrigerant or heat transfer liquid. The plate comprises at least two openings for supplying the circulation channel with heat transfer liquid or coolant. The circulation channel offers a section of passage for the heat transfer liquid or the refrigerant fluid which is a surface taken perpendicular to a plane in which the plate extends and
perpendiculairement à un axe d’allongement longitudinal de la plaque. perpendicular to a longitudinal axis of elongation of the plate.
Un problème réside en une mauvaise répartition du fluide réfrigérant et/ou du liquide caloporteur à l’intérieur du canal de circulation. Une telle mauvaise répartition amoindrit l’efficacité de transfert thermique entre le fluide réfrigérant et le liquide caloporteur. One problem lies in a poor distribution of the refrigerant and / or the heat transfer liquid inside the circulation channel. Such poor distribution reduces the efficiency of heat transfer between the refrigerant and the coolant.
iL est connu de ménager des protubérances à l’intérieur du canal de circulation pour perturber un écoulement du fluide réfrigérant et/ou du liquide caloporteur à l’intérieur du canal de drculation. Les protubérances sont issues d’une déformation d’au moins une des plaques. It is known to provide protuberances inside the circulation channel to disturb a flow of the refrigerant fluid and / or heat transfer liquid inside the drainage channel. The protuberances result from a deformation of at least one of the plates.
Néanmoins, il persiste une mauvaise répartition du fluide réfrigérant et/ou du liquide caloporteur à l’intérieur du canal de circulation, au moins à l’intérieur d’une zone de la section de passage du fluide réfrigérant et/ou du liquide caloporteur. D’une manière générale, on observe qu’une zone centrale de l’échangeur de chaleur et/ou de la section de passage voit sa température moins modifiée que des zones périphériques de l’échangeur de chaleur et/ou de la section de passage, ce qu’il convient d’améliorer. However, there remains a poor distribution of the coolant and / or the coolant inside the circulation channel, at least inside an area of the passage section of the coolant and / or the coolant. In general, it is observed that a central zone of the heat exchanger and / or of the passage section has its temperature modified less than peripheral zones of the heat exchanger and / or of the passage section. , which needs to be improved.
Un but de la présente invention est de proposer une plaque constitutive d’un échangeur de chaleur qui permet une optimisation d’une répartition du fluide réfrigérant et/ou du liquide caloporteur à l’intérieur du canal de circulation que délimite partiellement la plaque. An object of the present invention is to provide a constituent plate of a heat exchanger which allows an optimization of the distribution of the refrigerant fluid and / or of the heat transfer liquid inside the circulation channel which the plate partially delimits.
Un autre but de la présente invention est de proposer un échangeur de chaleur comprenant au moins une telle plaque, l’échangeur de chaleur étant soit un échangeur de chaleur entre un fluide réfrigérant et un liquide caloporteur, tel qu’un échangeur de chaleur interposé entre un circuit de fluide réfrigérant et un circuit de liquide caloporteur, soit un échangeur de chaleur entre un fluide réfrigérant et un flux d’air. 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 fluid and a coolant liquid, such as a heat exchanger interposed between a refrigerant fluid circuit and a heat transfer liquid circuit, ie a heat exchanger between a refrigerant fluid and an air flow.
La présente invention a pour objet une plaque constitutive d’un échangeur de chaleur et destinée à délimiter au moins un canal de circulation d’un fluide, la plaque comprenant un fond et au moins un bord relevé qui entoure le fond, la plaque comprenant au moins une ouverture d’entrée et une ouverture de sortie, la plaque comprenant au moins une nervure définissant un profil en « U » du canal de circulation, le profil en « U » présentant un coude reliant une première branche à une seconde branche, la plaque comprenant une première série de protubérances ménagées dans la première branche et/ou dans la seconde branche et une deuxième série de protubérances disposées dans le coude. The present invention relates to a constituent plate of a heat exchanger and intended to delimit at least one channel for circulating a fluid, the plate comprising a bottom and at least one raised edge which surrounds the bottom, the plate comprising at least at least one inlet opening and one outlet opening, the plate comprising at least one rib defining a "U" profile of the circulation channel, the "U" profile having an elbow connecting a first branch to a second branch, the plate comprising a first series of protuberances formed in the first branch and / or in the second branch and a second series of protuberances disposed in the elbow.
De manière spécifique, au moins une protubérance de la première série de protubérances est configurée pour dévier le fluide de sa direction Specifically, at least one protuberance of the first series of protrusions is configured to deflect fluid from its direction.
d’écoulement dans la branche considérée, et au moins une protubérance de la deuxième série de protubérances est configurée pour guider le fluide de la première branche vers la seconde branche. of flow in the branch considered, and at least one protuberance of the second series of protrusions are configured to guide fluid from the first branch to the second branch.
L’échangeur de chaleur comprend au moins une plaque. Cette plaque est réalisée en un matériau métallique, par exemple apte à être embouti pour former notamment les protubérances par emboutissage de la plaque. Ce matériau métallique est choisi parmi les matériau métallique thermiquement conducteur, tel que l’aluminium. The heat exchanger includes at least one plate. This plate is made of a metallic material, for example suitable for being stamped in order in particular to form the protuberances by stamping of the plate. This metallic material is chosen from thermally conductive metallic materials, such as aluminum.
La plaque comporte un fond et un bord relevé. Le bord relevé s’étend dans au moins un plan de bord qui est transversal au plan de fond dans lequel s’étend le fond. Le bord relevé comprend au moins deux bords relevés longitudinaux ménagés en vis-à-vis l’un de l’autre et au moins deux bords relevés latéraux ménagés en vis-à-vis l’un de l’autre. Les deux bords relevés longitudinaux et les deux bords relevés latéraux forment ensemble un pourtour périphérique au fond. Les bords relevés latéraux et les bords relevés longitudinaux s’étendent à l’intérieur de plans respectifs qui forment chacun avec le plan de fond un angle qui est compris entre 91° et 140°, préférentiellement compris entre 91° et 95°. The plate has a bottom and a raised edge. The raised edge extends into at least one edge plane that is transverse to the bottom plane into which the bottom extends. The raised edge comprises at least two longitudinal raised edges formed opposite one another and at least two lateral raised edges formed opposite one another. The two longitudinal raised edges and the two lateral raised edges together form a peripheral periphery at the bottom. The lateral raised edges and the longitudinal raised edges extend inside respective planes which each form with the bottom plane an angle which is between 91 ° and 140 °, preferably between 91 ° and 95 °.
La plaque comprend au moins quatre ouvertures, réparties deux à deux à chacune de ses extrémités longitudinales. Deux de ces ouvertures sont configurées pour communiquer avec un premier circuit de fluide ménagé d’un côté du fond. Le côté du fond considéré ici est celui formant un angle sensiblement droit avec les bords relevés longitudinaux et les bords relevés latéraux de la plaque. Ces deux ouvertures correspondent à l’ouverture d’entrée et à l’ouverture de sortie du fluide. Les deux autres ouvertures sont configurées pour communiquer avec un deuxième circuit de fluide ménagé d’un autre côté du fond de la plaque. Les quatre ouvertures sont notamment circulaires. The plate comprises at least four openings, distributed two by two at each of its longitudinal ends. Two of these openings are configured to communicate with a first fluid circuit provided on one side of the bottom. The side of the bottom considered here is that forming a substantially right angle with the longitudinal raised edges and the lateral raised edges of the plate. These two openings correspond to the inlet opening and the fluid outlet opening. The other two openings are configured to communicate with a second fluid circuit provided on the other side of the bottom of the plate. The four openings are notably circular.
La plaque comprend une nervure permettant de séparer la première branche et la deuxième branche du profil en « U ». La nervure est parallèle à une direction d’élongation des bords relevés longitudinaux. Elle s’étend entre une première extrémité longitudinale et une deuxième extrémité longitudinale de la plaque. La première extrémité longitudinale est en contact avec le bord relevé et préférentiellement en contact avec un premier bord relevé latéral que comprend le bord relevé. La deuxième extrémité longitudinale est située à une première distance non nulle du bord relevé. La nervure permet la séparation de la première branche du profil en « U » du canal de circulation du fluide et de la deuxième brandie. La première branche et la deuxième branche sont reliées au moyen d’un coude. The plate comprises a rib making it possible to separate the first branch and the second branch of the "U" profile. The rib is parallel to a direction of elongation of the longitudinal raised edges. It extends between a first longitudinal end and a second longitudinal end of the plate. The first longitudinal end is in contact with the edge raised and preferably in contact with a first lateral raised edge that includes the raised edge. The second longitudinal end is located at a first non-zero distance from the raised edge. The rib allows the separation of the first branch of the "U" profile of the fluid circulation channel and the second brandy. The first branch and the second branch are connected by means of an elbow.
Une première série de protubérances émerge du fond de la plaque dans la première branche ou dans la deuxième branche. Une deuxième série de protubérances émerge du fond de la plaque dans le coude. Les protubérances de la première série de protubérances et les protubérances de la deuxième série de protubérances peuvent être identiques en forme et/ou en volume notamment, à la tolérance de fabrication près. Lesdites protubérances peuvent également être différentes les unes des autres, en forme et en volume notamment. A first series of protuberances emerge from the bottom of the plate in the first branch or in the second branch. A second set of protuberances emerge from the bottom of the plate in the elbow. The protuberances of the first series of protrusions and the protuberances of the second series of protuberances may be identical in shape and / or in volume in particular, except for the manufacturing tolerance. Said protuberances may also be different from one another, in particular in shape and in volume.
Une protubérance de la première série de protubérances est configurée pour permettre au fluide d’être dévié de sa trajectoire initiale. Les protubérances permettent de perturber le fluide circulant dans le canal. La protubérance de la première série de protubérances configurée pour dévier le fluide de sa direction d’écoulement, permet d’augmenter la perturbation du fluide, augmentant ainsi l’efficacité de l’échange thermique entre les deux fluides circulants chacun d’un côté du fond de la plaque. A protrusion of the first set of protrusions is configured to allow fluid to be deflected from its original path. The protuberances make it possible to disturb the fluid circulating in the channel. The protuberance of the first series of protuberances configured to deflect the fluid from its direction of flow, makes it possible to increase the disturbance of the fluid, thus increasing the efficiency of the heat exchange between the two circulating fluids each on one side of the plate bottom.
Une protubérance de la deuxième série de protubérance est configurée pour orienter le fluide de la première branche vers la seconde branche, en le conduisant à travers le coude. Cette protubérance permet alors un meilleur écoulement du fluide dans la plaque. A protrusion of the second series of protrusions is configured to direct fluid from the first branch to the second branch, leading it through the elbow. This protuberance then allows a better flow of the fluid in the plate.
Selon une autre caractéristique de l’invention, les protubérances émergent du fond de la plaque vers le canal. According to another characteristic of the invention, the protuberances emerge from the bottom of the plate towards the channel.
Les protubérances émergent du fond de la plaque dans le sens du bord relevé, vers le canal de circulation du fluide. Obtenues par emboutissage, les protubérances de la plaque consistent en des proéminences permettant la perturbation du fluide s’écoulant le long de ses parois. Disposées ainsi, les protubérances sont en contact avec le fluide et entraîne donc l’agitation de son écoulement, The protuberances emerge from the bottom of the plate in the direction of the raised edge, towards the fluid circulation channel. Obtained by stamping, the protuberances of the plate consist of protuberances allowing the disruption of the fluid flowing along its walls. Arranged thus, the protuberances are in contact with the fluid and therefore cause the agitation of its flow,
Selon une autre caractéristique de l’invention, au moins une protubérance de la première série et/ou de la deuxième série présente une forme oblongue. According to another characteristic of the invention, at least one protuberance of the first series and / or of the second series has an oblong shape.
La protubérance de la première série et/ou de la deuxième série de protubérances est de forme allongée et présente des angles arrondis. Une telle forme de protubérance permet, en plus de perturber le fluide pendant son écoulement, de le guider au sein du canal de circulation. Conduire le fluide dans le canal de circulation permet de l’amener dans des zones qui ne seraient pas traversées s’il suivait sa direction d’écoulement. The protuberance of the first series and / or of the second series of protuberances is of elongated shape and has rounded angles. Such a form of protuberance makes it possible, in addition to disturbing the fluid during its flow, to guide it within the circulation channel. Conducting the fluid in the circulation channel allows it to take it to areas that would not be crossed if it were to follow its direction of flow.
Guider le fluide dans le canal de circulation permet d’homogénéiser les échanges thermiques engendrés par la circulation du fluide. Le fluide est harmonieusement réparti au sein de son canal de circulation. Guiding the fluid in the circulation channel makes it possible to homogenize the heat exchanges generated by the circulation of the fluid. The fluid is harmoniously distributed within its circulation channel.
Selon une autre caractéristique de l’invention, la forme oblongue de la protubérance est rectiligne. According to another characteristic of the invention, the oblong shape of the protuberance is rectilinear.
La forme oblongue rectiligne permet de guider le fluide. La première série de protubérances de forme oblongue rectiligne peut être disposée dans la seconde branche du canal. The rectilinear oblong shape helps guide the fluid. The first series of protuberances of rectilinear oblong shape can be arranged in the second branch of the channel.
Préférentiellement, la troisième série de protubérances présente une pluralité de protubérances oblongues rectilignes émergeant de la seconde branche du canal. Ces protubérances sont orientées pour perturber le fluide. Preferably, the third series of protuberances has a plurality of rectilinear oblong protuberances emerging from the second branch of the channel. These protuberances are oriented to disturb the fluid.
Avantageusement, les protubérances sont disposées de manière oblique, c’est-à-dire que les bords allongés des protubérances sont orientés entre 25° et 85° des bords relevés longitudinaux de la plaque, notamment 45°. De plus, ces protubérances sont disposées de façon à permettre l’écoulement du fluide du coude vers l’ouverture de sortie. Advantageously, the protuberances are arranged obliquely, that is to say that the elongated edges of the protuberances are oriented between 25 ° and 85 ° of the longitudinal raised edges of the plate, in particular 45 °. In addition, these protrusions are arranged to allow the flow of fluid from the elbow to the outlet opening.
Ces protubérances, avantageusement disposées dans la seconde branche, permettent de dévier le fluide de sa direction d’écoulement et ainsi de créer des perturbations dans le fluide. Ces protubérances permettent aussi l’acheminement du fluide du coude vers l’ouverture de sortie. La première série de protubérances peut également être similairement répartie dans la première branche du canal. Dans ce cas, les protubérances permettent l’acheminement du fluide de l’ouverture d’entrée vers le coude.These protuberances, advantageously arranged in the second branch, make it possible to deflect the fluid from its direction of flow and thus to create disturbances in the fluid. These protuberances also allow the flow of fluid from the elbow to the outlet opening. The first series of protuberances can also be distributed similarly in the first branch of the channel. In this case, the protuberances allow the flow of the fluid from the inlet opening to the elbow.
De plus, la deuxième série de protubérances de forme oblongue rectiligne peut être disposée dans le coude du canal. Préférentiellement, le coude du canal présente une pluralité de protubérances oblongues rectilignes. Ces protubérances sont alors orientées pour former un conduit de circulation du fluide, afin de permettre son acheminement de la première branche vers la seconde branche du canal. In addition, the second series of protuberances of rectilinear oblong shape can be arranged in the bend of the channel. Preferably, the bend of the channel has a plurality of rectilinear oblong protuberances. These protuberances are then oriented to form a conduit for the circulation of the fluid, in order to allow its routing from the first branch to the second branch of the channel.
Il est tout à fait envisageable de disposer de telles protubérances dans la première branche, dans le coude et dans la seconde branche de manière indépendante ou en combinaison. It is entirely conceivable to have such protuberances in the first branch, in the elbow and in the second branch independently or in combination.
H est également tout à fait envisageable que la première série de It is also quite possible that the first series of
protubérances et la deuxième série de protubérances présentent une pluralité de formes de protubérances. protrusions and the second series of protrusions have a plurality of protuberance shapes.
Selon une autre caractéristique de l’invention, la forme oblongue est courbée. According to another characteristic of the invention, the oblong shape is curved.
La forme oblongue courbée permet de guider le fluide dans le canal de circulation, tout en diminuant le nombre de protubérances. The curved oblong shape helps guide the fluid in the circulation channel, while reducing the number of protuberances.
La plaque présente avantageusement une pluralité de protubérances oblongues courbées qui peuvent être réparties sur la première branche et/ou sur le coude et/ou sur la seconde branche, en d'autres termes, les The plate advantageously has a plurality of curved oblong protuberances which can be distributed over the first branch and / or on the elbow and / or on the second branch, in other words, the
protubérances de formes oblongues courbées peuvent être réparties dans la première série de protubérances et/ou dans la seconde série de protuberances of curved oblong shapes may be distributed in the first series of protrusions and / or in the second series of
protubérances. protuberances.
La première série de protubérances oblongues courbées de la première branche permettent de répartir le fluide sur l’ensemble de la première branche, en perturbant le fluide circulant entre l’ouverture d’entrée et le coude. The first set of curved oblong protrusions on the first leg distribute fluid throughout the first leg, disrupting the fluid flowing between the inlet opening and the elbow.
La première série de protubérances oblongues courbées de la seconde branche permettent de répartir le fluide sur l’ensemble de la seconde branche, en perturbant le fluide circulant entre le coude et l’ouverture de sortie. The first series of curved oblong protuberances of the second branch allow the fluid to be distributed over the whole of the second branch, disturbing the fluid flowing between the elbow and the outlet opening.
Les protubérances oblongues courbées du coude permettent de conduire le fluide de la première branche vers la seconde branche du canal. The curved oblong protuberances of the elbow allow fluid to be conducted from the first branch to the second branch of the canal.
Il est tout à fait envisageable de disposer de telles protubérances dans la première branche, dans le coude et dans la seconde branche de manière indépendante ou en combinaison. It is entirely conceivable to have such protuberances in the first branch, in the elbow and in the second branch independently or in combination.
fl est également envisageable que la première série de protubérances et la deuxième série de protubérances présentes une pluralité de formes de protubérances. It is also conceivable that the first series of protuberances and the second series of protuberances have a plurality of protuberance shapes.
Selon une autre caractéristique de l’invention, la plaque comprend une troisième série de protubérances. According to another characteristic of the invention, the plate comprises a third series of protuberances.
La troisième série de protubérances peut émerger de la première branche ou de la seconde branche du canal. Avantageusement, la troisième série jaillit de la première branche du canal de circulation du fluide. Cette troisième série présente une forme oblongue qui peut être rectiligne et/ou courbée. The third set of protuberances can emerge from the first branch or the second branch of the canal. Advantageously, the third series springs from the first branch of the fluid circulation channel. This third series has an oblong shape which can be rectilinear and / or curved.
fl est tout à fait envisageable que la troisième série de protubérances présente une pluralité de formes de protubérances. It is quite possible for the third series of protuberances to have a plurality of shapes of protuberances.
Ainsi, la première série de protubérances, la deuxième série de protubérances ainsi que la troisième série de protubérances de forme oblongue rectiligne et/ou oblongue courbée peuvent être disposées en l’une quelconque des combinaisons possibles dans la première branche, dans le coude et dans la seconde branche. Thus, the first series of protrusions, the second series of protuberances as well as the third series of protuberances of rectilinear oblong and / or curved oblong shape can be arranged in any of the possible combinations in the first branch, in the elbow and in the second branch.
Selon une autre caractéristique de l’invention, au moins une protubérance de la troisième série est configurée pour guider le fluide de l’ouverture d’entrée vers le coude. According to another feature of the invention, at least one third series protrusion is configured to guide fluid from the inlet opening to the elbow.
La forme oblongue rectiligne et/ou courbée permet de guider le fluide. La troisième série de protubérances de forme oblongue rectiligne peut être disposée dans la première branche du canal. Dans ce cas, une protubérance de forme oblongue rectiligne et/ou courbée peut être disposée aux abords de l’ouverture d’entrée du fluide, de telle manière qu’elle permette le guidage de ce fluide vers la zone souhaitée. A tout autre emplacement sur la première branche, la protubérance est préférentiellement disposée dans la direction de l’écoulement du fluide. C’est-à-dire, les bords allongés de ladite protubérance sont disposés parallèlement aux bords relevés longitudinaux de la plaque.The rectilinear and / or curved oblong shape helps guide the fluid. The third series of protuberances of rectilinear oblong shape can be arranged in the first branch of the channel. In this case, a protuberance of rectilinear and / or curved oblong shape may be arranged near the fluid inlet opening, in such a way that it allows the guiding of this fluid to the desired area. At any other location on the first branch, the protuberance is preferably disposed in the direction of the flow of the fluid. That is to say, the elongated edges of said protuberance are arranged parallel to the longitudinal raised edges of the plate.
Préférentiellement, une pluralité de protubérances de forme oblongue rectiligne et/ou courbée émergent du fond de la plaque, dans la première branche. Ainsi, les protubérances aux abords de l’ouverture d’entrée sont disposées de telle sorte qu’elles permettent la répartition du fluide sur l’ensemble de la première branche. Les protubérances sur tout autre emplacement sont disposées parallèlement aux bords relevés longitudinaux, afin de guider le fluide dans la première branche et de le conduire de l’ouverture d’entrée vers le coude du canal. Preferably, a plurality of protuberances of rectilinear and / or curved oblong shape emerge from the bottom of the plate, in the first branch. Thus, the protuberances around the inlet opening are arranged so that they allow the distribution of the fluid over the whole of the first branch. The protrusions at any other location are arranged parallel to the raised longitudinal edges, to guide the fluid into the first branch and lead it from the inlet opening to the bend of the channel.
Selon une autre caractéristique de l’invention, la première branche et/ou la seconde branche comprend au moins une protubérance de la première série de protubérances et au moins une protubérance de la troisième série de protubérance. According to another characteristic of the invention, the first branch and / or the second branch comprises at least one protuberance of the first series of protuberances and at least one protuberance of the third series of protuberances.
La première branche et/ou la seconde branche présente une combinaison de protubérances. Ainsi, les protubérances de la première série de The first branch and / or the second branch has a combination of protuberances. Thus, the protuberances of the first series of
protubérances et les protubérances de la troisième série de protubérances permettent l’acheminement du fluide de l’ouverture d’entre vers le coude et/ou du coude vers l’ouverture de sortie, mais également une déviation du fluide, entraînant sa perturbation et donc un meilleur transfert thermique entre chacun des fluides d’un côté de la plaque. protrusions and protrusions of the third series of protrusions allow the flow of the fluid from the inlet opening to the elbow and / or from the elbow to the outlet opening, but also a deflection of the fluid, causing its disturbance and therefore better heat transfer between each of the fluids on one side of the plate.
Selon une autre caractéristique de l’invention, la plaque comporte un orifice d’entrée et un orifice de sortie d’un second fluide disposés sur un premier bord latéral de la plaque, l’ouverture d’entrée et l’ouverture de sortie de la plaque étant disposées sur un deuxième bord latéral de la plaque. According to another characteristic of the invention, the plate comprises an inlet orifice and an outlet of a second fluid arranged on a first lateral edge of the plate, the inlet opening and the outlet opening of the plate being arranged on a second lateral edge of the plate.
La plaque comprend au moins quatre ouvertures, réparties deux à deux à chacune de ses extrémités longitudinales. Deux de ces ouvertures sont configurées pour communiquer avec un premier circuit de fluide ménagé d’un côté du fond. Le côté du fond considéré ici est celui formant un angle sensiblement droit avec les bords relevés longitudinaux et les bords relevés latéraux de la plaque. Ces deux ouvertures correspondent à l’ouverture d’entrée et à l’ouverture de sortie du fluide. Les deux autres ouvertures sont configurées pour communiquer avec un deuxième circuit de fluide ménagé d’un autre côté du fond de la plaque. Les quatre ouvertures sont notamment circulaires. The plate comprises at least four openings, distributed two by two at each of its longitudinal ends. Two of these openings are configured to communicate with a first fluid circuit provided on one side of the bottom. The side of the bottom considered here is that forming a substantially right angle with the longitudinal raised edges and the raised edges sides of the plate. These two openings correspond to the inlet opening and the outlet opening of the fluid. The other two openings are configured to communicate with a second fluid circuit provided on the other side of the bottom of the plate. The four openings are notably circular.
Selon une autre caractéristique de l’invention, la nervure émerge du premier bord latéral de la plaque, entre l’ouverture d’entrée et l’ouverture de sortie du fluide et s’étend longitudinalement sur au moins une partie de la plaque, une extrémité libre de la nervure étant disposée à une distance non nulle du deuxième bord latéral de la plaque, According to another characteristic of the invention, the rib emerges from the first lateral edge of the plate, between the inlet opening and the fluid outlet opening and extends longitudinally over at least part of the plate, a free end of the rib being disposed at a non-zero distance from the second lateral edge of the plate,
La plaque comprend une nervure permettant de séparer la première branche et la deuxième branche du profil en « U ». La nervure est parallèle à une direction d’élongation des bords relevés longitudinaux. Elle s’étend entre une première extrémité longitudinale et une deuxième extrémité longitudinale de la plaque. La première extrémité longitudinale est en contact avec le bord relevé et préférentiellement en contact avec un premier bord relevé latéral que comprend le bord relevé. La deuxième extrémité longitudinale est située à une première distance non nulle du bord relevé. La nervure permet la séparation de la première brandie du profil en « U » du canal de circulation du fluide et de la deuxième branche. La première branche et la deuxième branche sont reliées au moyen d’un coude. The plate comprises a rib making it possible to separate the first branch and the second branch of the "U" profile. The rib is parallel to a direction of elongation of the longitudinal raised edges. It extends between a first longitudinal end and a second longitudinal end of the plate. The first longitudinal end is 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 is located at a first non-zero distance from the raised edge. The rib allows the separation of the first branch from the "U" profile of the fluid circulation channel and the second branch. The first branch and the second branch are connected by means of an elbow.
L’invention a également pour objet un échangeur de chaleur comprenant au moins une plaque telle que décrite précédemment. A subject of the invention is also a heat exchanger comprising at least one plate as described above.
Selon une autre caractéristique de l’invention, l’échangeur de chaleur comprend une première plaque et une deuxième plaque délimitant un premier circuit configuré pour être parcouru par un fluide réfrigérant, la deuxième plaque et une troisième plaque délimitant un second drcuit configuré pour être parcouru par un liquide caloporteur, la première plaque, la deuxième plaque et la troisième plaque étant conformes à l’une quelconque des caractéristique du premier objet de l’invention et imbriquées les unes dans les autres. L’échangeur de chaleur comprend deux plaques délimitant ensemble le canal de circulation du fluide. La première plaque comprend l’une quelconque des caractéristiques précédentes. La deuxième plaque peut comprendre les mêmes caractéristiques que la première plaque ou bien être différente. La première plaque et la deuxième plaque sont imbriquées l’une dans l’autre et un espace, qui forme le canal de circulation du fluide est ménagé entre les deux plaques. According to another characteristic of the invention, the heat exchanger comprises a first plate and a second plate delimiting a first circuit configured to be traversed by a refrigerant fluid, the second plate and a third plate delimiting a second pipe configured to be traversed. by a heat transfer liquid, the first plate, the second plate and the third plate being in accordance with any one of the characteristics of the first subject of the invention and nested in each other. The heat exchanger comprises two plates together delimiting the fluid circulation channel. The first plate includes any one of the preceding features. The second plate can include the same characteristics as the first plate or else be different. The first plate and the second plate are nested one inside the other and a space, which forms the fluid circulation channel, is formed between the two plates.
D’autres caractéristiques et avantages de l’invention apparaîtront encore au travers de la description qui suit d’une part, et de plusieurs exemples de réalisation donnés à titre indicatif et non limitatif en référence aux dessins schématiques annexés d’autre part, sur lesquels : Other characteristics and advantages of the invention will become apparent from the following description on the one hand, and from several exemplary embodiments given by way of indication and not limiting with reference to the appended schematic drawings on the other hand, in which :
[Fig. 1] est une vue schématique d’une installation comprenant au moins un échangeur de chaleur selon l’invention ; [Fig. 1] is a schematic view of an installation comprising at least one heat exchanger according to the invention;
[Fig. 2] est une vue schématique d’un échangeur de chaleur participant à l’installation représentée sur la figure 1 ; [Fig. 2] is a schematic view of a heat exchanger participating in the installation shown in Figure 1;
[Fig. 3] est une vue de face d'une plaque constitutive de l'échangeur de chaleur illustré sur la figure 2 ; [Fig. 3] is a front view of a constituent plate of the heat exchanger illustrated in FIG. 2;
[Fig.4] est une vue de face d’une plaque selon un autre mode de réalisation de l’invention, constitutive de l’échangeur de chaleur sur la figure 2 ; [Fig.4] is a front view of a plate according to another embodiment of the invention, constituting the heat exchanger in Figure 2;
[Fig.5] est une vue de face d’une plaque selon encore un autre mode de réalisation de l’invention, constitutive de l’échangeur de chaleur sur la figure [Fig.5] is a front view of a plate according to yet another embodiment of the invention, constituting the heat exchanger in FIG.
2 : 2:
[Fig. 6) est une vue en coupe transversale de l’une quelconque des plaques illustrées précédemment. [Fig. 6) is a cross-sectional view of any of the plates illustrated above.
Les caractéristiques, les variantes et les différentes formes de réalisation de l'invention peuvent être associées les unes avec les autres, selon diverses combinaisons, dans la mesure où elles ne sont pas incompatibles ou exclusives les unes des autres. On pourra notamment imaginer des variantes de l’invention ne comprenant qu’une sélection de caractéristiques décrites parla suite de manière isolées des autres caractéristiques décrites, si cette sélection de caractéristiques est suffisante pour conférer un avantage technique ou pour différencier l’invention par rapport à l’état de la technique antérieur. The characteristics, variants and different embodiments of the invention may be associated with each other, in various combinations, as long as they are not incompatible or exclusive of each other. It is in particular possible to imagine variants of the invention comprising only a selection of characteristics described later in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer an advantage. technique or to differentiate the invention from the state of the prior art.
En particulier toutes les variantes et tous les modes de réalisation décrits sont combinables entre eux si rien ne s’oppose à cette combinaison sur le plan technique. In particular, all of the variants and all of the embodiments described can be combined with each other if there is nothing to prevent this combination from a technical point of view.
Sur les figures, les éléments communs à plusieurs figures conservent la même référence. In the figures, the elements common to several figures retain the same reference.
Sur la figure 1, un véhicule automobile est équipé d’un élément 1 qu’il convient de refroidir ou de réchauffer, par exemple pour optimiser son fonctionnement. Un tel élément 1 est notamment un moteur électrique ou thermique destiné à propulser au moins partiellement le véhicule automobile, une batterie prévue pour stocker une énergie électrique, un dispositif de stockage de calories et/ou de ffigories ou analogue. A cet effet, le véhicule automobile est équipé d’une installation 2 qui comprend un circuit de fluide réfrigérant 3 à l’intérieur duquel circule un fluide réfrigérant 4, dioxyde de carbone par exemple ou analogue, et un circuit de liquide caloporteur 5 à l’intérieur duquel circule un liquide caloporteur 6, eau glycolée notamment ou analogue. L’installation 2 comprend au moins un échangeur de chaleur 11, 12 selon la présente invention. L’installation 2 est décrite ci-après, mais les caractéristiques de l’installation 1 décrite ne sont nullement restrictives pour l’échangeur de chaleur 11, 12 de la présente invention. Autrement dit, l’installation 2 est susceptible de présenter des caractéristiques structurelles distinctes et/ou des modalités de fonctionnement différentes que celles décrites sans que l’échangeur de chaleur 11, 12 déroge aux règles de la présente invention. In Figure 1, a motor vehicle is equipped with an element 1 which should be cooled or heated, for example to optimize its operation. Such an element 1 is in particular an electric or thermal motor intended to at least partially propel the motor vehicle, a battery designed to store electrical energy, a device for storing calories and / or figures or the like. To this end, the motor vehicle is equipped with an installation 2 which comprises a refrigerant fluid circuit 3 inside which circulates a refrigerant fluid 4, carbon dioxide for example or the like, and a coolant circuit 5 to l 'Inside which circulates a coolant 6, in particular glycol water or the like. The installation 2 comprises at least one heat exchanger 11, 12 according to the present invention. Installation 2 is described below, but the characteristics of installation 1 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 distinct structural characteristics and / or different operating methods than those described without the heat exchanger 11, 12 departing from the rules of the present invention.
Le circuit de fluide réfrigérant 3 comprend un compresseur 7 pour The refrigerant circuit 3 comprises a compressor 7 for
comprimer le fluide réfrigérant 4, un échangeur de fluide réfrigérant / air extérieur 8 pour refroidir le fluide réfrigérant 4 à pression constante, par exemple placé en face avant du véhicule automobile, un organe de détente 9 pour permettre une détente du fluide réfrigérant 4 et un premier échangeur de chaleur 11 qui est agencé pour permettre un transfert thermique entre le fluide réfrigérant 4 et le liquide caloporteur 6. Le circuit de fluide réfrigérant 3 comprend un deuxième échangeur de chaleur 12 qui est agencé pour permettre un transfert thermique entre le fluide réfrigérant 4 et un flux d’air 10, le flux d’air 10 circulant par exemple à l’intérieur d’une canalisation 13 d’un système de ventilation, de chauffage et/ou de climatisation, avant d’être délivré à l’intérieur d’un habitacle du véhicule automobile. compress the coolant 4, a coolant / external air exchanger 8 to cool the coolant 4 at constant pressure, for example placed on the front face of the motor vehicle, an expansion member 9 to allow an expansion of the coolant 4 and a first heat exchanger 11 which is arranged to allow heat transfer between the coolant 4 and the coolant 6. The coolant circuit 3 comprises a second heat exchanger 12 which is arranged to allow thermal transfer between the refrigerant fluid 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.
A cette fin, l’élément l est en relation avec un échangeur thermique 14, l’échangeur thermique 14 étant apte à modifier une température de l’élément 1, notamment par contact direct ménagé entre l’élément 1 et l’échangeur thermique 14, l’échangeur thermique 14 étant constitutif du circuit de liquide caloporteur 5. To this end, the element 1 is in connection with a heat exchanger 14, the heat exchanger 14 being able to modify a temperature of the element 1, in particular by direct contact made between the element 1 and the heat exchanger 14 , the heat exchanger 14 being part of the coolant circuit 5.
Le circuit de liquide caloporteur 5 comprend une pompe 15 pour faire circuler le liquide caloporteur 6 à l’intérieur du circuit de liquide caloporteur 5. Le circuit de liquide caloporteur 5 comprend le premier échangeur de chaleur 11 qui est également constitutif du circuit de fluide réfrigérant 3. Le premier échangeur de chaleur 11 comprend au moins un premier chemin de circulation 21 du fluide réfrigérant 4 et au moins un deuxième chemin de circulation 22 du liquide caloporteur 6, le premier chemin de circulation 21 et le deuxième chemin de circulation 22 étant agencés pour permettre un échange de chaleur entre le fluide réfrigérant 4 présent à l’intérieur du premier chemin de circulation 21 et le liquide caloporteur 6 présent à l’intérieur du deuxième chemin de circulation 22. De préférence, le premier échangeur de chaleur 11 comporte plusieurs premiers chemins de circulation 21 et plusieurs deuxièmes chemins de circulation 22. Un premier chemin de circulation 21 est interposé entre deux deuxièmes chemins de circulation 22, et un deuxième chemin de circulation 22 est interposé entre deux premiers chemins de circulation 21. Le premier échangeur de chaleur 11 comporte ainsi une alternance de premier chemin de circulation 21 et de deuxième chemin de circulation 22. The heat transfer liquid circuit 5 comprises a pump 15 for circulating the heat transfer liquid 6 inside the heat transfer liquid circuit 5. The heat transfer liquid circuit 5 comprises the first heat exchanger 11 which also constitutes the refrigerant circuit. 3. The first heat exchanger 11 comprises at least a first circulation path 21 of the refrigerant 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 heat exchange between the refrigerant 4 present inside the first circulation path 21 and the coolant 6 present inside the second circulation path 22. Preferably, the first heat exchanger 11 comprises several first traffic lanes 21 and several second traffic lanes 22. A first traffic lane 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 the first circulation path 21 and of the second circulation path 22.
A l’intérieur du circuit de liquide caloporteur 5, le liquide caloporteur 6 circule depuis la pompe 15 vers le premier échangeur de chaleur 11, puis circule à l’intérieur du premier échangeur de chaleur 11 en empruntant les deuxièmes chemins de circulation 22 pour échanger des calories avec le fluide réfrigérant 4 présent à l’intérieur des premiers chemins de circulation 21, puis retourne vers la pompe 15. Inside the coolant circuit 5, the coolant 6 circulates from the pump 15 to the first heat exchanger 11, then circulates inside the first heat exchanger 11 by taking the second circulation paths 22 to exchange calories with refrigerant 4 present inside the first circulation paths 21, then returns to the pump 15.
A l’intérieur du circuit de fluide réfrigérant 3, le fluide réfrigérant 4 circule du compresseur 7 vers l'échangeur fluide réfrigérant / air extérieur 8, puis vers l’organe de détente 9. Inside the refrigerant circuit 3, the refrigerant 4 circulates from the compressor 7 to the refrigerant / outside air exchanger 8, then to the expansion member 9.
Selon une première modalité de fonctionnement du circuit de fluide réfrigérant 3, le fluide réfrigérant 4 circule ensuite à l’intérieur du premier échangeur de chaleur 11 en empruntant les premiers chemins de circulation 21 à l’intérieur desquels le fluide réfrigérant 4 échange des calories avec le liquide caloporteur 6 présent à l’intérieur des deuxièmes chemins de circulation 22, puis retourne vers le compresseur 7. According to a first mode of operation of the refrigerant circuit 3, the refrigerant 4 then circulates inside the first heat exchanger 11 by taking 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.
Selon une deuxième modalité de fonctionnement du circuit de fluide réfrigérant 3, le fluide réfrigérant 4 circule à l’intérieur du deuxième échangeur de chaleur 12 en empruntant des chemins de circulation à l’intérieur desquels le fluide réfrigérant 4 échange des calories avec le flux d’air 10, puis retourne vers le compresseur 7. According to a second mode of operation of the refrigerant circuit 3, the refrigerant 4 circulates inside the second heat exchanger 12 by taking circulation paths inside which the refrigerant 4 exchanges calories with the flow d air 10, then returns to compressor 7.
Sur la figure 2, le premier échangeur de chaleur il est globalement parallélépipédique et comprend une joue 100 qui est pourvue d’une admission du liquide caloporteur 101 par l’intermédiaire de laquelle le liquide caloporteur pénètre à l’intérieur du premier échangeur de chaleur 11. La joue 100 est aussi pourvue d’une évacuation du liquide caloporteur 102 par l’intermédiaire de laquelle le liquide caloporteùr 6 est évacué hors du premier échangeur de chaleur 11. Les deuxièmes chemins de circulation 22 s’étendent entre l’admission du liquide caloporteur loi et l’évacuation du liquide caloporteur 102. La joue 100 comporte aussi une admission du fluide réfrigérant 103 par l’intermédiaire de laquelle le fluide réfrigérant 4 pénètre à l’intérieur du premier échangeur de chaleur 11 et une évacuation du fluide réfrigérant 104 par l’intermédiaire de laquelle le fluide réfrigérant 4 est évacué hors du premier échangeur de chaleur 11. Les premiers chemins de circulation 21 s’étendent entre l’admission du fluide réfrigérant 103 et l’évacuation du fluide réfrigérant 104. In Figure 2, the first heat exchanger it is generally parallelepipedal and comprises a cheek 100 which is provided with an inlet of the coolant 101 through which the coolant enters the interior of the first heat exchanger 11 The cheek 100 is also provided with an outlet for the coolant liquid 102 through which the coolant liquid 6 is discharged out of the first heat exchanger 11. The second circulation paths 22 extend between the inlet of the liquid. coolant law and the discharge of the coolant liquid 102. The cheek 100 also includes an inlet of the coolant 103 through which the coolant 4 enters inside the first heat exchanger 11 and an outlet of the coolant 104 through which the coolant 4 is discharged out of the first heat exchanger 11. The first circulation paths 21 extend between the adm ission of refrigerant 103 and discharge of refrigerant 104.
Tel que visible sur la figure 3, la plaque 16 s’étend principalement selon un axe longitudinal d’allongement Al. La plaque 16 comprend un fond 160 et au moins un bord relevé 161 qui entoure le fond 160. Autrement dit, le bord relevé 161 est ménagé à la périphérie du fond 160 et le bord relevé 161 entoure le fond 160. On comprend que la plaque 16 est agencée en une baignoire globalement rectangulaire, le fond de la baignoire étant constitué du fond 160 et les bords de la baignoire étant constitués du bord relevé 161. Plus particulièrement, le bord relevé 161 comprend une premier bord relevé longitudinal 162 et un deuxième bord rélevé longitudinal 163 ménagés en vis- à-vis l’un de l’autre ainsi qu’un premier bord relevé latéral 164 et un deuxième bord relevé latéral 165 ménagés en vis-à-vis l’un de l’autre. As shown in Figure 3, the plate 16 extends mainly along a longitudinal axis of elongation A1. The plate 16 comprises a base 160 and at least one raised edge 161 which surrounds the base 160. In other words, the raised edge 161 is formed at the periphery of the base 160 and the raised edge 161 surrounds the base 160. It is understood that the plate 16 is arranged in a generally rectangular bathtub, the bottom of the bathtub consisting of the bottom 160 and the edges of the bathtub consisting of the raised edge 161. More particularly, the raised edge 161 comprises a first edge. longitudinal raised 162 and a second raised longitudinal edge 163 arranged opposite each other as well as a first raised lateral edge 164 and a second raised lateral edge 165 arranged opposite each other the other.
La plaque 16 comprend quatre ouvertures 25, notamment circulaires, dont une ouverture d’entrée 250 du fluide et une ouverture de sortie 260 du fluide, qui sont réparties deux-à-deux à chaque extrémité longitudinale de la plaque 16, et plus particulièrement à chacun des angles de fond 166 de la plaque 16. L’ouverture d’entrée 250 et l’ouverture de sortie 260 sont configurées pour communiquer avec un des premiers chemins de circulation ménagé d’un côté du fond 160 et les deux autres ouvertures 25, respectivement 270 et 280, sont configurées pour communiquer avec un des deuxièmes chemins de circulation ménagé d’un autre côté du fond 160. The plate 16 comprises four openings 25, in particular circular, including an inlet opening 250 for the fluid and an outlet opening 260 for the fluid, which are distributed two by two at each longitudinal end of the plate 16, and more particularly at each of the bottom angles 166 of the plate 16. The inlet opening 250 and the outlet opening 260 are configured to communicate with one of the first circulation paths formed on one side of the bottom 160 and the other two openings 25 , respectively 270 and 280, are configured to communicate with one of the second circulation paths provided on the other side of the bottom 160.
Deux de ces ouvertures 25 ménagées à une même extrémité longitudinale de la plaque 16 sont chacune entourées par un collet 167, de sorte que ces ouvertures 25 cernées par ce collet 167 s’étendent dans un plan décalé par rapport à un plan de fond P4 dans lequel s’inscrit le fond 160. Les deux autres ouverture 25 situées à l’autre extrémité longitudinale de la plaque 16 s’étendent dans le plan de fond P4. Two of these openings 25 formed at the same longitudinal end of the plate 16 are each surrounded by a collar 167, so that these openings 25 surrounded by this collar 167 extend in a plane offset with respect to a bottom plane P4 in which fits the bottom 160. The other two opening 25 located at the other longitudinal end of the plate 16 extend in the bottom plane P4.
Deux plaques 16 sont imbriquées l’une dans l’autre et en contact l’une avec l’autre au moins par l’intermédiaire de leur bord relevés 161. Autrement dit, deux plaques 16 sont empilées l’une au-dessus et ménagent entre elles un espace qui forme un canal 17 de circulation du fluide réfrigérant 4 ou du liquide caloporteur 6. Le fond 160 est pourvu d’une pluralité de protubérances 18 qui avec au moins le fond 160 et le bord relevé 161 délimitent un canal de circulation 17 du fluide réfrigérant 4 ou du liquide caloporteur 6. Two plates 16 are nested one inside the other and in contact with one another at least via their raised edge 161. In other words, two plates 16 are stacked one above and spare between them a space which forms a channel 17 for circulating the refrigerant 4 or the coolant 6. The bottom 160 is provided with a plurality of protuberances 18 which with at least the bottom 160 and the raised edge 161 define a circulation channel 17 for the refrigerant 4 or the heat transfer liquid 6.
Le fond 160 comprend une nervure 19 qui est agencée pour que le canal 17 présente un profil en U. La nervure 19 est parallèle à une direction D d’élongation du premier bord relevé longitudinal 162 et du deuxième bord relevé longitudinal 163, la direction D d’élongation du premier bord rélevé longitudinal 162 et du deuxième bord relevé longitudinal 163 étant préférentiellement parallèle à l’axe longitudinal d’allongement Al de la plaque 16. La nervure 19 s’étend entre une première extrémité longitudinale 20 et une deuxième extrémité longitudinale 26, la première extrémité longitudinale 20 étant en contact avec le bord relevé 161 et préférentiellement en contact avec le premier bord relevé latéral 164 que comprend le bord relevé 161. La deuxième extrémité longitudinale 26 est située à une première distance D1 non-nulle du bord relevé 161, la première distance D1 étant prise entre la deuxième extrémité longitudinale 26 de la nervure 19 et le bord relevé 161, mesurée le long de l’axe d’allongement longitudinal A1 de la plaque 16. The bottom 160 comprises a rib 19 which is arranged so that the channel 17 has a U-profile. The rib 19 is parallel to a direction D of elongation of the first longitudinal raised edge 162 and of the second longitudinal raised edge 163, the direction D elongation of the first longitudinal raised edge 162 and of the second longitudinal raised edge 163 being preferably parallel to the longitudinal axis of elongation A1 of the plate 16. The rib 19 extends between a first longitudinal end 20 and a second longitudinal end 26, the first longitudinal end 20 being in contact with the raised edge 161 and preferably in contact with the first lateral raised edge 164 which the raised edge 16 includes. The second longitudinal end 26 is located at a first non-zero distance D1 from the edge raised 161, the first distance D1 being taken between the second longitudinal end 26 of the rib 19 and the raised edge 161, measured along the all axis longitudinal embedding A1 of the plate 16.
Ces dispositions sont telles que le canal 17 est conformé en un U dont une première branche 22 du U est parallèle à une seconde branche 23 du U, la première branche 22 et la seconde branche 23 étant reliées par un coude 24. La première branche 22 et la seconde branche 23 sont parallèles au premier bord relevé longitudinal 162 et au deuxième bord relevé longitudinal 163 de la plaque 16. De plus la première branche 22 et la seconde branche 23 sont séparées par la nervure 19. Le coude 24 quant à lui jouxte le deuxième bord relevé latéral 165 qui est ménagé à l’opposé longitudinalement du premier bord relevé latéral 164. These arrangements are such that the channel 17 is shaped in a U, a first branch 22 of which of the U is parallel to a second branch 23 of the U, the first branch 22 and the second branch 23 being connected by an elbow 24. The first branch 22 and the second branch 23 are parallel to the first longitudinal raised edge 162 and to the second longitudinal raised edge 163 of the plate 16. In addition, the first branch 22 and the second branch 23 are separated by the rib 19. The elbow 24 for its part adjoins the second lateral raised edge 165 which is provided longitudinally opposite the first lateral raised edge 164.
La nervure 19 est ménagée par exemple à une égale deuxième distance D2 du premier bord relevé longitudinal 162 et du deuxième bord relevé longitudinal 163 de la plaque 16. Alternativement, la nervure 19 est ménagée à une deuxième distance D2 du premier bord relevé longitudinal 162 qui peut être plus grande ou plus petite qu’une troisième distance D3 prise entre la nervure 19 et le deuxième bord relevé longitudinal 163 de la plaque 16. La deuxième distance D2 et/ou la troisième distance D3 sont mesurées entre la nervure 19, prise en son centre, et l’un du premier bord relevé longitudinal 162 et/ou du deuxième bord relevé longitudinal 163, perpendiculairement à l’axe d’allongement longitudinal Al de la plaque 16. The rib 19 is provided for example at an equal second distance D2 from the first longitudinal raised edge 162 and from the second longitudinal raised edge 163 of the plate 16. Alternatively, the rib 19 is provided at a second distance D2 from the first longitudinal raised edge 162 which may be greater or less than a third distance D3 taken between the rib 19 and the second longitudinal raised edge 163 of the plate 16. The second distance D2 and / or the third distance D3 are measured between the rib 19, taken at its center, and one of the first longitudinal raised edge 162 and / or the second longitudinal raised edge 163, perpendicular to the longitudinal axis of elongation A1 of the plate 16.
Les protubérances 18 sont réparties en au moins deux séries, une première série 180 de protubérances 18 disposée, selon un mode de réalisation visible sur la figure 3, dans la seconde branche 23 et la deuxième série 181 de protubérances 18 disposée dans le coude 24. Au moins une protubérance 18 de la première série 180 est configurée pour dévier le fluide réfrigérant 4 ou le liquide caloporteur 6 de sa direction d’écoulement. The protuberances 18 are divided into at least two series, a first series 180 of protuberances 18 arranged, according to one embodiment visible in FIG. 3, in the second branch 23 and the second series 181 of protuberances 18 arranged in the elbow 24. At least one protuberance 18 of the first series 180 is configured to deflect the refrigerant 4 or the coolant 6 from its direction of flow.
Tel que visible sur la figure 3, la première série 180 et la deuxième série 181 comportent chacune une pluralité de protubérances 18 de forme oblongue rectiligne. En effet, les protubérances 18 présentent une forme allongée avec des angles arrondis. Emergeants du fond 160 de la plaque 16, ces As can be seen in FIG. 3, the first series 180 and the second series 181 each comprise a plurality of protuberances 18 of rectilinear oblong shape. Indeed, the protuberances 18 have an elongated shape with rounded angles. Emerging from bottom 160 of plate 16, these
protubérances 18 permettent de perturber ainsi que d’orienter le fluide s’écoulant dans le canal 17. protrusions 18 are used to disrupt as well as to orient the fluid flowing in the channel 17.
De plus, au moins une protubérance 18 de la première série 180 disposée dans la seconde branche 23 est configurée pour dévier le fluide réfrigérant 4 ou le liquide caloporteur 6 de sa direction d’écoulement, et ainsi le perturber. In addition, at least one protuberance 18 of the first series 180 disposed in the second branch 23 is configured to deflect the refrigerant 4 or the coolant 6 from its direction of flow, and thus disturb it.
Selon un mode de réalisation avantageux de l’invention, la première série 180 comporte une pluralité de protubérances 18 de forme oblongue rectiligne. Ces dernières sont disposées de manière oblique. Les bords allongés 183 des protubérances 18 sont orientés entre 25° et 85° du deuxième bord relevé longitudinal 163. Avantageusement, les bords allongés 183 des protubérances 18 sont orientés à 45° du deuxième bord relevé longitudinal 163. According to an advantageous embodiment of the invention, the first series 180 comprises a plurality of protuberances 18 of rectilinear oblong shape. These are arranged obliquely. The elongated edges 183 of the protrusions 18 are oriented between 25 ° and 85 ° of the second longitudinal raised edge 163. Advantageously, the elongated edges 183 of the protrusions 18 are oriented at 45 ° of the second longitudinal raised edge 163.
La première série 180 peut également comporter des protubérances 18 de forme circulaire. Dans un tel cas, les protubérances 18 de forme circulaire émergent du fond 160 de la plaque 16 aux abords de la nervure 19 et du deuxième bord relevé longitudinal 163. La deuxième série 181 de protubérances 18 répartie dans le coude 24 est configurée pour guider le fluide de la première branche 22 vers la seconde branche 23. Le coude 24 comporte une pluralité de protubérances 18 de forme oblongue rectiligne. Les protubérances 18 du coude 24 sont agencées pour permettre au fluide réfrigérant 4 ou au liquide caloporteur 6 de contourner la deuxième extrémité longitudinale 26 de la nervure 19. Ainsi, les protubérances 18 sont disposées selon trois orientations différentes. La première partie 240 des protubérances 18 du coude 24 est orientée à 45° du premier bord relevé longitudinal 162 de la plaque 16. La première partie 240 permet donc au fluide réfrigérant 4 ou au liquide caloporteur 6 d’être dévié de sa direction d’écoulement. Ensuite, une deuxième partie 241 de The first series 180 can also include protuberances 18 of circular shape. In such a case, the protuberances 18 of circular shape emerge from the bottom 160 of the plate 16 near the rib 19 and the second longitudinal raised edge 163. The second series 181 of protuberances 18 distributed in the elbow 24 is configured to guide the fluid from the first branch 22 to the second branch 23. The elbow 24 comprises a plurality of protuberances 18 of rectilinear oblong shape. The protuberances 18 of the elbow 24 are arranged to allow the coolant 4 or the coolant 6 to bypass the second longitudinal end 26 of the rib 19. Thus, the protuberances 18 are arranged in three different orientations. The first part 240 of the protuberances 18 of the bend 24 is oriented at 45 ° from the first longitudinal raised edge 162 of the plate 16. The first part 240 therefore allows the refrigerant 4 or the coolant 6 to be deflected from its direction of. flow. Then a second part 241 of
protubérances 18 du coude 24 est orientée parallèlement à l’un quelconque du premier bord relevé latéral 164 ou du deuxième bord relevé latéral 165.protrusions 18 of the elbow 24 is oriented parallel to either of the first side raised edge 164 or the second side raised edge 165.
Les protubérances 18 de cette deuxième partie 241 permettent au fluide réfrigérant 4 ou au liquide caloporteur 6 d’être guider vers une troisième partie 242 de protubérances 18 du coude 24. La troisième partie 242 de protubérances 18 du coude 24 comporte une pluralité de protubérances 18 oblongues rectilignes. Ces protubérances sont orientées à 45° du deuxième bord rélevé longitudinal 163 de la plaque 16. Cette troisième partie 242 permet de guider le fluide de la deuxième partie 241 vers la seconde branche 23. La première partie 240, la deuxième partie 241 et la troisième partie 242 permettent, ensemble, de former le coude 24 et donc de guide le fluide de la première branche 22 vers la seconde branche 23. The protuberances 18 of this second part 241 allow the refrigerant 4 or the heat transfer liquid 6 to be guided towards a third part 242 of protuberances 18 of the elbow 24. The third part 242 of protuberances 18 of the elbow 24 comprises a plurality of protuberances 18 oblong rectilinear. These protuberances are oriented at 45 ° from the second longitudinal raised edge 163 of the plate 16. This third part 242 makes it possible to guide the fluid from the second part 241 to the second branch 23. The first part 240, the second part 241 and the third part 242 together make it possible to form the elbow 24 and therefore to guide the fluid from the first branch 22 to the second branch 23.
La deuxième série 181 de protubérances 18 peut également comporter des protubérances 18 de forme tronconique. Ces protubérances 18 de forme tronconique sont avantageusement disposées entre les deux ouvertures 25, perturbant alors le fluide réfrigérant 4 ou le liquide caloporteur 6. The second series 181 of protuberances 18 may also include protuberances 18 of frustoconical shape. These protuberances 18 of frustoconical shape are advantageously arranged between the two openings 25, then disturbing the refrigerant 4 or the coolant 6.
Tel que visible sur la figure 4, la plaque 16 comprend une troisième série 182 de protubérances 18. Les protubérances 18 de cette troisième série 182 sont réparties dans la première branche 22 du canal 17. Les protubérances 18 de cette troisième série 182 sont configurées pour guider le fluide réfrigérant 4 ou le liquide caloporteur 6 de l’ouverture d’entrée 250 vers le coude 24. Dans le but de répartir le fluide réfrigérant 4 ou le liquide caloporteur 6 dans la première branche 22, c’est-à-dire entre le premier bord relevé longitudinal 161 et la nervure 19, des protubérances 18 de forme oblongue rectiligne sont réparties autour de l'ouverture d’entrée 250. Les protubérances 18 disposées aux abords de l’ouverture d’entrée 250 sont disposées de telle sorte que le fluide réfrigérant 4 ou liquide caloporteur 6 soit homogènement réparti au seit|f de la première banche 22. As can be seen in FIG. 4, the plate 16 comprises a third series 182 of protuberances 18. The protuberances 18 of this third series 182 are distributed in the first branch 22 of the channel 17. The protuberances 18 of this third series 182 are configured to guide the refrigerant 4 or the heat transfer liquid 6 from the inlet opening 250 towards the elbow 24. In the purpose of distributing the refrigerant 4 or the coolant 6 in the first branch 22, that is to say between the first longitudinal raised edge 161 and the rib 19, protuberances 18 of rectilinear oblong shape are distributed around the The inlet opening 250. The protuberances 18 disposed in the vicinity of the inlet opening 250 are disposed such that the refrigerant 4 or heat transfer liquid 6 is evenly distributed over the first branch 22.
De plus, la troisième série 182 de protubérances 18 comportes des In addition, the third series 182 of protuberances 18 comprises
protubérances 18 de forme oblongue rectiligne réparties le long de la première branche 22 sur toute ou partie de sa longueur. Les protubérances 18 y sont juxtaposées les unes aux autres et disposées sur plusieurs rangs, chaque rang étant parallèle à l’un quelconque du premier bord relevé longitudinal 162 ou du deuxième bord relevé longitudinal 163. Ces protuberances 18 of rectilinear oblong shape distributed along the first branch 22 over all or part of its length. The protuberances 18 are juxtaposed to each other and arranged in several rows, each row being parallel to any one of the first longitudinal raised edge 162 or of the second longitudinal raised edge 163. These
protubérances 18 sont configurées pour guider le fluide réfrigérant 4 ou le liquide caloporteur 6 de l'ouverture d’entrée 250 vers le coude 24. protrusions 18 are configured to guide the refrigerant 4 or the coolant 6 from the inlet opening 250 to the elbow 24.
La plaque 16 est réalisée en matériau métallique, tel que l’aluminium, apte à être embouti afin de former les protubérances 18 notamment par The plate 16 is made of a metallic material, such as aluminum, suitable for being stamped in order to form the protuberances 18 in particular by
emboutissage. Le matériau métallique est choisi parmi les matériaux métalliques thermiquement conducteur. stamping. The metallic material is chosen from thermally conductive metallic materials.
Comme illustré sur la figure 5, la première série 180 et la deuxième série 181 peuvent comporter chacune une pluralité de protubérances 18 de forme oblongue courbée. En effet, les protubérances 18 présentent une forme allongée à angles arrondis avec un recourbement sur leur longueur. As illustrated in FIG. 5, the first series 180 and the second series 181 can each comprise a plurality of protuberances 18 of curved oblong shape. Indeed, the protuberances 18 have an elongated shape with rounded angles with a curvature over their length.
Emergeant du fond 160 de la plaque 16, ces protubérances 18 permettent de perturber et d’orienter le fluide s’écoulant dans le canal 17. Emerging from the bottom 160 of plate 16, these protuberances 18 make it possible to disturb and orient the fluid flowing in channel 17.
De plus, au moins une protubérance 18 de la première série 180 disposée dans la seconde branche 23 est configurée pour dévier le fluide réfrigérant 4 ou le liquide caloporteur 6 de sa direction d’écoulement, et ainsi le perturber. In addition, at least one protuberance 18 of the first series 180 disposed in the second branch 23 is configured to deflect the refrigerant 4 or the coolant 6 from its direction of flow, and thus disturb it.
Selon un mode de réalisation avantageux de l’invention, la première série 180 comporte une pluralité de protubérances 18 de forme oblongue courbée. Ces dernières sont disposées de manière oblique, de manière à dévier le fluide de sa trajectoire rectiligne. According to an advantageous embodiment of the invention, the first series 180 comprises a plurality of protuberances 18 of curved oblong shape. These the latter are arranged obliquely, so as to deflect the fluid from its rectilinear path.
La première série 180 peut également comporter des protubérances 18 de forme circulaire. Dans un tel cas, les protubérances 18 de forme circulaire émergent du fond 160 de la plaque 16 aux abords de la nervure 19 et du deuxième bord relevé longitudinal 163. The first series 180 can also include protuberances 18 of circular shape. In such a case, the protuberances 18 of circular shape emerge from the bottom 160 of the plate 16 near the rib 19 and the second longitudinal raised edge 163.
La deuxième série 181 de protubérances 18 répartie dans le coude 24 est configurée pour guider le fluide de la première branche 22 vers la seconde branche 23. Le coude 24 comporte une pluralité de protubérances 18 de forme oblongue rectiligne. Les protubérances 18 du coude 24 sont agencées pour permettre au fluide réfrigérant 4 ou au liquide caloporteur 6 de contourner la deuxième extrémité longitudinale 26 de la nervure 19. Ainsi, les protubérances 18 sont arquées afin d’accompagner le fluide de la première branche 22 vers la seconde branche 23. The second series 181 of protuberances 18 distributed in the elbow 24 is configured to guide the fluid from the first branch 22 to the second branch 23. The elbow 24 comprises a plurality of protuberances 18 of rectilinear oblong shape. The protuberances 18 of the elbow 24 are arranged to allow the refrigerant 4 or the coolant 6 to bypass the second longitudinal end 26 of the rib 19. Thus, the protuberances 18 are arched in order to accompany the fluid from the first branch 22 towards the second branch 23.
La deuxième série 181 de protubérances 18 peut également comporter des protubérances 18 de forme tronconique. Ces protubérances 18 de forme tronconique sont avantageusement disposées entre les deux ouvertures 25, perturbant alors le fluide réfrigérant 4 ou le liquide caloporteur 6. The second series 181 of protuberances 18 may also include protuberances 18 of frustoconical shape. These protuberances 18 of frustoconical shape are advantageously arranged between the two openings 25, then disturbing the refrigerant 4 or the coolant 6.
La plaque 16 peut comprendre une troisième série 182 de protubérances 18 de forme oblongue courbée sur la première branche 22 du canal 17. Ces protubérances sont configurées pour guider le fluide réfrigérant 4 ou le liquide caloporteur 6 de l’ouverture d’entrée 250 vers le coude 24. Dans le but de répartir le fluide réfrigérant 4 ou le liquide caloporteur 6 dans la première branche 22, c’est-à-dire entre le premier bord relevé longitudinal 163 et la nervure 19, des protubérances 18 de forme oblongue courbée sont réparties autour de l’ouverture d’entrée 250. Les protubérances 18 disposées aux abords de l’ouverture d’entrée 250 sont disposées de telle sorte que le fluide réfrigérant 4 ou liquide caloporteur 6 soit homogènement réparti au sein de la première banche 22. De plus, la troisième série 182 de protubérances 18 comportes des The plate 16 can comprise a third series 182 of protuberances 18 of oblong shape curved on the first branch 22 of the channel 17. These protuberances are configured to guide the refrigerant 4 or the coolant 6 from the inlet opening 250 towards the outlet. elbow 24. In order to distribute the refrigerant 4 or the coolant 6 in the first branch 22, that is to say between the first longitudinal raised edge 163 and the rib 19, protuberances 18 of curved oblong shape are distributed around the inlet opening 250. The protuberances 18 disposed in the vicinity of the inlet opening 250 are disposed such that the refrigerant 4 or heat transfer liquid 6 is evenly distributed within the first branch 22. In addition, the third series 182 of protuberances 18 comprises
protubérances 18 de forme oblongue courbée réparties le long de la première branche 22 sur toute ou partie de sa longueur. Les protubérances 18 y sont juxtaposées les unes aux autres et disposées sur plusieurs rangs, chaque rang étant parallèle à l’un quelconque du premier bord relevé longitudinal 162 ou du deuxième bord relevé longitudinal 163. Ces protubérances 18 sont configurées pour guider le fluide réfrigérant 4 ou le liquide caloporteur 6 de l'ouverture d'entrée 250 vers le coude 24. protuberances 18 of curved oblong shape distributed along the first branch 22 over all or part of its length. The protrusions 18 are juxtaposed there with one another and arranged in several rows, each row being parallel to any one of the first longitudinal raised edge 162 or of the second longitudinal raised edge 163. These protuberances 18 are configured to guide the refrigerant 4. or the heat transfer liquid 6 from the inlet opening 250 to the elbow 24.
Sur la figure 6, trois plaques 16 sont imbriquées les unes dans les autres de manière à ce que le bord relevé 161 d'une plaque 16 soit encastré à l’intérieur du bord relevé 161 de la plaque 16 immédiatement successive et de manière à ce que le fond 160 d’une plaque 16 soit en contact avec les protubérances 18 de la plaque 16 immédiatement successive. Un tel empilement des plaques 16 est réalisé aussi de manière à ce que les fonds 160 des plaques 16 soient disposés parallèlement les uns aux autres en une superposition distante et étagée des fonds 160. Les bords relevés 161 de deux plaques 16 encastrées l'une dans l’autre sont en contact et sont destinés à être brasés l’un avec l’autre pour assurer une étanchéité du canal 17 ainsi ménagé entre deux plaques 16 adjacentes. Deux plaques 16 adjacentes sont aussi associées de manière à ce que les nervures 19 des deux plaques 16 adjacentes soient superposées l’une à l’autre, les plans médians Pi des plaques 16 adjacentes étant superposés l’un avec l’autre. In FIG. 6, three plates 16 are nested one inside the other so that the raised edge 161 of a plate 16 is embedded inside the raised edge 161 of the immediately successive plate 16 and in such a way that that the bottom 160 of a plate 16 is in contact with the protuberances 18 of the immediately successive plate 16. Such a stack of the plates 16 is also produced so that the bases 160 of the plates 16 are arranged parallel to each other in a distant and stepped superposition of the bases 160. The raised edges 161 of two plates 16 fitted one into the other. the other are in contact and are intended to be brazed together to seal the channel 17 thus formed between two adjacent plates 16. Two adjacent plates 16 are also associated so that the ribs 19 of the two adjacent plates 16 are superimposed on each other, the median planes Pi of the adjacent plates 16 being superimposed on each other.
On comprend à la lecture de ce qui précède que lâ présente invention propose une plaque pour échangeur thermique à plaques, qui comprend des moyens pour amener le fluide considéré en des zones qui habituellement ne sont pas correctement alimentées en fluide. L’efficacité de l’échange thermique est ainsi renforcée et la température est plus homogène sur l’ensemble de la plaque. It will be understood from reading the foregoing that the present invention proposes a plate for a plate heat exchanger, which comprises means for bringing the fluid in question into zones which are usually not correctly supplied with fluid. The efficiency of heat exchange is thus enhanced and the temperature is more homogeneous over the entire plate.
L’invention ne saurait toutefois se limiter aux moyens et configurations décrits et illustrés ici, et elle s’étend également à tout moyen ou configuration équivalents et à toute combinaison technique opérant de tels moyens. En particulier, la forme de la plaque ou des protubérances peut être modifiée sans nuire à l’invention, dans la mesure où la plaque, in fine, remplit les mêmes fonctionnalités que celles décrites dans ce document. The invention should not however be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configuration and to any technical combination operating such means. In particular, the shape of the plate or the protrusions can be changed without harming the invention, insofar as the plate, in fine, fulfills the same functionalities as those described in this document.

Claims

REVENDICATIONS
1. Plaque (16) constitutive d’un échangeur de chaleur (11) et destinée à délimiter au moins un canal (17) de circulation d’un fluide, la plaque (16) comprenant un fond (160) et au moins un bord relevé (161) qui entoure le fond (160), la plaque (16) comprenant au moins une ouverture d’entrée (250) et une ouverture de sortie (260), la plaque (16) comprenant au moins une nervure (19) définissant un profil en « U » du canal (17) de circulation, le profil en « U » présentant un coude (24) reliant une première branche (22) à une seconde branche (23), la plaque (16) comprenant une première série1. Plate (16) constituting a heat exchanger (11) and intended to define at least one channel (17) for the circulation of a fluid, the plate (16) comprising a bottom (160) and at least one edge raised (161) which surrounds the bottom (160), the plate (16) comprising at least one inlet opening (250) and one outlet opening (260), the plate (16) comprising at least one rib (19) defining a "U" profile of the circulation channel (17), the "U" profile having an elbow (24) connecting a first branch (22) to a second branch (23), the plate (16) comprising a first series
(180) de protubérances (18) ménagées dans la première branche (22) et/ou dans la seconde branche (23) et une deuxième série (181) de protubérances (18) disposées dans le coude (24), caractérisée en ce qu’au moins une protubérance (18) de la première série (180) de protubérances (18) est configurée pour dévier le fluide de sa direction d’écoulement dans la branche considérée, et en ce qu’au moins une protubérance (18) de la deuxième série(180) of protuberances (18) formed in the first branch (22) and / or in the second branch (23) and a second series (181) of protuberances (18) arranged in the bend (24), characterized in that 'at least one protuberance (18) of the first series (180) of protrusions (18) is configured to deflect the fluid from its direction of flow in the branch under consideration, and in that at least one protrusion (18) of the second series
(181) de protubérances (18) est configurée pour guider le fluide de la première branche (22) vers la seconde branche (23). (181) of protrusions (18) is configured to guide fluid from the first leg (22) to the second leg (23).
2. Plaque (16) selon la revendication précédente, dans laquelle les 2. Plate (16) according to the preceding claim, wherein the
protubérances (18) émergent du fond (160) de la plaque (16) vers le canalprotuberances (18) emerging from the bottom (160) of the plate (16) towards the channel
(17). (17).
3. Plaque (16) selon l’une quelconque des revendications précédentes, dans laquelle au moins une protubérance (18) de la première série (180) et/ou de la deuxième série (181) présente une forme oblongue. 3. Plate (16) according to any one of the preceding claims, wherein at least one protrusion (18) of the first series (180) and / or of the second series (181) has an oblong shape.
4. Plaque (16) selon la revendication précédente, dans laquelle la forme oblongue de la protubérance (18) est rectiligne. 4. Plate (16) according to the preceding claim, wherein the oblong shape of the protuberance (18) is rectilinear.
5. Plaque (16) selon la revendication 3, dans laquelle la forme oblongue de la protubérance (18) est courbée. 5. Plate (16) according to claim 3, wherein the oblong shape of the protuberance (18) is curved.
6. Plaque (16) selon l’une quelconque des revendications précédentes, comprenant une troisième série (182) de protubérances (18). 7· Plaque (16) selon la revendication précédente, dans laquelle au moins une protubérance (18) de la troisième série (182) est configurée pour guider le fluide de l'ouverture d’entrée (250) vers le coude (24). 6. Plate (16) according to any one of the preceding claims, comprising a third series (182) of protuberances (18). 7. Plate (16) according to the preceding claim, wherein at least one protuberance (18) of the third series (182) is configured to guide the fluid from the inlet opening (250) to the elbow (24).
8. Plaque (16) selon la revendication 6, dans laquelle la première branche (22) et/ou la seconde branche (23) comprend au moins une protubérance (18) de la première série (180) de protubérances (18) et au moins une protubérance (18) de la troisième série (182) de protubérances (18). 8. Plate (16) according to claim 6, wherein the first branch (22) and / or the second branch (23) comprises at least one protrusion (18) of the first series (180) of protrusions (18) and at minus one protuberance (18) of the third series (182) of protuberances (18).
9. Plaque (16) selon l’une quelconque des revendications précédentes, comportant un orifice d’entrée (270) et un orifice de sortie (280) d’un second fluide, disposés sur un premier bord latéral de la plaque, l’ouverture d’entrée (250) et l’ouverture de sortie (260) de la plaque (16) étant disposées sur un deuxième bord latéral de la plaque (16). 9. A plate (16) according to any one of the preceding claims, comprising an inlet port (270) and an outlet port (280) of a second fluid, arranged on a first lateral edge of the plate, the inlet opening (250) and outlet opening (260) of the plate (16) being disposed on a second lateral edge of the plate (16).
10. Plaque (16) selon l’une quelconque des revendications précédentes, dans laquelle la nervure (19) émerge du premier bord latéral de la plaque (16), entre l’ouverture d’entrée (250) et l’ouverture de sortie (260) du fluide et s’étend longitudinalement sur au moins une partie de la plaque (16), une extrémité longitudinale (26) de la nervure (19) étant disposée à une distance non nulle du deuxième bord latéral de la plaque (16). 10. Plate (16) according to any one of the preceding claims, wherein the rib (19) emerges from the first side edge of the plate (16), between the inlet opening (250) and the outlet opening. (260) of the fluid and extends longitudinally over at least part of the plate (16), a longitudinal end (26) of the rib (19) being disposed at a non-zero distance from the second lateral edge of the plate (16). ).
11. Echangeur de chaleur comprenant au moins une plaque (16) selon l’une quelconque des revendications 1 à 10. 11. Heat exchanger comprising at least one plate (16) according to any one of claims 1 to 10.
12. Echangeur de chaleur selon la revendication précédente, comprenant une première plaque (16) et une deuxième plaque (16) délimitant un premier circuit configuré pour être parcouru par un fluide réfrigérant (4), la deuxième plaque (16) et une troisième plaque (16) délimitant un second circuit configuré pour être parcouru par un liquide caloporteur (6), la première plaque (16), la deuxième plaque (16) et la troisième plaque (16) étant conformes à l’une quelconque des revendications 1 à 10 et imbriquées les unes dans les autres. 12. Heat exchanger according to the preceding claim, comprising a first plate (16) and a second plate (16) delimiting a first circuit configured to be traversed by a refrigerant fluid (4), the second plate (16) and a third plate. (16) delimiting a second circuit configured to be traversed by a heat transfer liquid (6), the first plate (16), the second plate (16) and the third plate (16) being in accordance with any one of claims 1 to 10 and nested within each other.
PCT/FR2020/051089 2019-06-30 2020-06-23 Plate constituting a heat exchanger and heat exchanger comprising at least one such plate WO2021001614A1 (en)

Applications Claiming Priority (2)

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FR1907231A FR3097954B1 (en) 2019-06-30 2019-06-30 Plate constituting a heat exchanger and heat exchanger comprising at least one such plate
FRFR1907231 2019-06-30

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417280A (en) * 1992-08-27 1995-05-23 Mitsubishi Jukogyo Kabushiki Kaisha Stacked heat exchanger and method of manufacturing the same
US20140345577A1 (en) * 2013-02-18 2014-11-27 Modine Manufacturing Company Charge air cooler, and intake manifold including the same
FR3024771A1 (en) * 2014-08-06 2016-02-12 Valeo Systemes Thermiques HEAT EXCHANGER BEAM AND HEAT EXCHANGER COMPRISING SAID BEAM

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417280A (en) * 1992-08-27 1995-05-23 Mitsubishi Jukogyo Kabushiki Kaisha Stacked heat exchanger and method of manufacturing the same
US20140345577A1 (en) * 2013-02-18 2014-11-27 Modine Manufacturing Company Charge air cooler, and intake manifold including the same
FR3024771A1 (en) * 2014-08-06 2016-02-12 Valeo Systemes Thermiques HEAT EXCHANGER BEAM AND HEAT EXCHANGER COMPRISING SAID BEAM

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FR3097954A1 (en) 2021-01-01

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