EP3452772A1 - Plastic heat exchanger and vehicle comprising this exchanger - Google Patents
Plastic heat exchanger and vehicle comprising this exchangerInfo
- Publication number
- EP3452772A1 EP3452772A1 EP17725716.9A EP17725716A EP3452772A1 EP 3452772 A1 EP3452772 A1 EP 3452772A1 EP 17725716 A EP17725716 A EP 17725716A EP 3452772 A1 EP3452772 A1 EP 3452772A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plates
- heat exchanger
- fluid
- opening
- open
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
-
- 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
- F28D9/0012—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 apparatus having an annular form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
Definitions
- the present invention relates to a heat exchanger, and a vehicle comprising this heat exchanger.
- the plate heat exchangers traditionally comprise a plurality of rectangular aluminum plates stacked to form an intermediate space between the adjacent plates for the circulation of a fluid.
- the heat exchangers comprise a first group of intermediate spaces fluidly connected to each other for the circulation of a first fluid through the stack of plates, and a second group of intermediate spaces fluidly connected to each other for the circulation of a second fluid through the stack of plates.
- aluminum heat exchangers have a parallelepiped shape that makes it difficult to integrate in an environment where the available space is limited. This can result in a relatively limited return.
- the present invention aims to overcome all or part of these disadvantages by providing a heat exchanger with improved compactness and efficiency.
- the subject of the present invention is a heat exchanger, made of plastic material, comprising a plurality of plates stacked in a predetermined stacking direction, the adjacent plates of the stack of plates being spaced apart in the stacking direction defining a set of intermediate spaces for fluid circulation between the plates, wherein the plates have an outer side and an opposite inner side, the inner side being shaped to define an opening, so that all the openings forms through the stacked plates a fluid passage well, and wherein the set of intermediate spaces comprises closed intermediate spaces and open intermediate spaces, each open intermediate space having a first radial opening extending between the inner sides of the two adjacent plates to open into the pass well fluid, and a second radial opening extending between the outer sides of two adjacent plates, the first radial opening and the second radial opening being in fluid communication so as to allow a flow of fluid from the passage well to the outside the exchanger, or vice versa, and through each open intermediate space delimited by two adjacent plates.
- the heat exchanger according to the invention has a passage well for axially entering or exiting fluid, orthogonal to the fluid flow between the plates, which improves the efficiency of the heat exchange.
- the passageway clears a space that can position the heat exchanger in places more difficult to access, so that the heat exchanger is less cumbersome.
- the openings defining the passageway have a similar shape and area.
- the openings are circular.
- the first radial opening extends all along the inner side of each plate defining an open intermediate space.
- the second radial opening extends all along the outer side of each plate defining an open intermediate space.
- the heat exchanger comprises at least one wall extending through the passageway to define through the passageway at least two compartments each for the circulation of a fluid.
- the passageway can be used to dispense a plurality of fluids through the heat exchanger.
- the passage well extends in a rectilinear manner.
- the heat exchanger comprises forced convection means arranged inside the passageway.
- Forced convection means comprise for example a fan.
- the inner side of the plates extends along a closed line.
- the heat exchanger has an alternation of closed intermediate spaces and open intermediate spaces.
- the set of intermediate spaces comprises closed intermediate spaces adjacent to the open intermediate spaces, and the enclosed intermediate spaces delimit a fluid passage circuit extending all around the passageway.
- This characteristic increases the heat exchange surface.
- said passage circuit comprises at least one internal partition positioned between an inlet and an outlet so as to constrain a fluid to flow several times around the direction in which the passageway extends.
- the heat exchanger comprises one or more obstacles arranged between the first radial opening and the second radial opening to impede the flow of fluid.
- Obstacles create a turbulent flow favoring heat transfer.
- the invention also relates to a vehicle comprising a heat exchanger having the aforementioned characteristics.
- FIG. 1 is a perspective view of a heat exchanger according to one embodiment of the invention
- FIG. 2 is a sectional and perspective view of a heat exchanger according to one embodiment of the invention
- FIG. 3 is an exploded perspective view of a heat exchanger according to one embodiment of the invention.
- FIG. 4 is a perspective view of a heat exchanger according to one embodiment of the invention.
- FIG. 5 is a sectional and perspective view of a heat exchanger according to one embodiment of the invention.
- FIG. 6 is an exploded perspective view of a heat exchanger according to one embodiment of the invention.
- FIGS. 7 and 8 are views in partial section and in perspective of a heat exchanger according to one embodiment of the invention.
- Figure 9 is an exploded perspective view of a heat exchanger according to one embodiment of the invention.
- FIG 1 shows a heat exchanger 1 according to one embodiment of the invention.
- the heat exchanger 1 is intended to allow heat transfer between at least two fluids 2, 4, as shown schematically in Figure 3.
- the heat exchanger 1 can equip for example a vehicle, including a motor vehicle.
- the heat exchanger 1 is of the plate heat exchanger type.
- the heat exchanger 1 comprises a plurality of plates 6 stacked in a predetermined direction E stacking.
- the stacking direction E can be rectilinear. As can be seen in FIGS. 1 and 4, the stacking direction E can be perpendicular to the plates 6.
- the heat exchanger 1 may comprise two end plates 7 between which the stack of plates 6 extends.
- the adjacent plates 6 of this stack of plates are spaced in the direction E of stacking so as to delimit, between the adjacent plates 6, a set of intermediate spaces 8 intended for a circulation of fluid between the plates 6.
- the plates 6 may be of the same shape and dimensions, so that once stacked, the outer edges of the plates 6 coincide. According to the example of the figures, the plates 6 have a disc shape.
- the plates 6 have an inner wafer or side 60, and an outer wafer or side 62, opposite the inner side 60, extending in the longitudinal direction of the wafers, where appropriate from one end 61 to the other. plates 6.
- the plates 6 are configured to allow heat exchange therethrough, i.e. from an intermediate space 8 to an adjacent intermediate space 8.
- the heat exchanger 1, in particular the plates 6, 7, is made of plastic material, in particular of plastic material containing a thermally conductive filler, such as, for example, polyamide 66 (PA66) including a graphite filler and / or or carbon, to provide a thermal conductivity at 20 ° C greater than 0.6 Wm _1 .K _1 , preferably equal to or greater than 1 ⁇ . ⁇ ⁇ 1 .
- a thermally conductive filler such as, for example, polyamide 66 (PA66) including a graphite filler and / or or carbon
- Each plate 6 may have a thickness and / or density different from that of one or more other plates 6, for example increasing or decreasing in the stacking direction E, so that the stack of plates 6 advantageously has a thermal gradient predetermined through the stack of plates 6.
- the set of intermediate spaces 8 comprises closed intermediate spaces 80 and open intermediate spaces 82.
- the closed intermediate spaces 80 and the open intermediate spaces 82 are arranged alternately in the stacking direction E.
- the closed intermediate spaces 80 are intended for the circulation of at least one fluid 2 in a closed volume which is here delimited by faces 64 facing two adjacent plates 6, an external lateral wall 67 which connects in particular the outer sides 62 of these adjacent plates 6, and an inner side wall 66 connecting in particular the inner sides 60 of the two adjacent plates 6 corresponding.
- the closed intermediate spaces 80 are advantageously in fluid communication with each other, that is to say they are adapted to allow a circulation of fluid from a closed intermediate space 80 to another one which is preferably consecutive in the stacking direction E .
- the heat exchanger 1 comprises for this purpose a distribution network and a fluid evacuation network for distributing and discharging one or more fluids in the closed intermediate spaces 80, these networks being formed by openings 12 which can be arranged through the openings. plates 6.
- the openings 12 comprise inlet openings 12a, forming the distribution network, and outlet openings 12b, forming the evacuation network.
- Within each closed intermediate space 80 open at least one inlet opening 12a and an outlet opening 12b.
- the heat exchanger 1 may comprise a peripheral wall 68 extending around one or more openings 12 to form a guide duct. It will be noted that the openings 12, in particular the inlet openings 12a and / or the outlet openings 12b, are advantageously coaxial in order to limit the pressure drops in the heat exchanger 1.
- the heat exchanger 1 has at least one inlet 14, opening on the fluid distribution network, to admit a fluid 2 inside the closed intermediate spaces 80 of the stack of plates 6 and at least one outlet 16, communicating with the evacuation network, for discharging the fluid 2 out of the intermediate spaces 80 of the stack of plates 6.
- the inlet 14 and the outlet 16 are formed in particular through one of the two end plates 7, more precisely the same plate 7 end.
- the open intermediate spaces 82 are intended for the circulation of at least one fluid 4 in an open volume delimited here between faces 69 facing two adjacent plates 6, so that this fluid can pass through the stack of plates 6, ie the outside of the heat exchanger 1 to the passage well, or from the passageway to the outside of the heat exchanger 1.
- Each open intermediate space 82 has a first radial opening 84 extending between the inner sides 60 of two adjacent plates 6, and a second radial opening 86 extending between the outer sides 62 of the two adjacent adjacent plates 6.
- the first radial opening 84 and the second radial opening 86 are in fluid communication through the corresponding open intermediate space 82 from one of these two openings 84, 86 to the other.
- the plates 6 extend longitudinally in a non-rectilinear trajectory, in particular a curvilinear trajectory, and more precisely circular, as illustrated in the figures, from one end 61 to the other, so that the inner sides 60 of the plates 6 delimit an opening 18.
- the outer side 62 of the plates 6 extends a greater distance than the inner side 60; the inner sides 60 and the outer sides 62 may be circular, of the same respective diameter from one plate 6 to another.
- the openings 18 of two adjacent plates 6 overlap in all or part, preferably are superimposed, so that all the openings 18 delimits a passage well preferably extending in the direction E of stacking, through the stack of plates 6.
- the passageway is intended for the circulation of at least one fluid 4 through the stack of plates 6, as illustrated schematically in FIG.
- the openings 18 may be aligned in the stacking direction, for example coaxial as shown in the figures.
- the passage well thus defined may be rectilinear, for example cylindrical.
- the openings 18 advantageously have a shape, preferably circular, and an area, if necessary diameter, similar.
- the openings 18 may be open towards the outside, as illustrated in FIG. 2, or preferably closed, as can be seen for example in FIGS. 1 and 3, that is to say that the inner sides 60 extend according to a closed line and completely surround the openings 18. Where appropriate, the openings 18, and therefore the passage well, are advantageously positioned in the center of the plates 6, for a better efficiency of the heat exchange.
- the openings 18 are through, that is to say each open on the two opposite faces 64, 69 of each corresponding plate 6.
- the first radial openings 84 open into the passage well, while the second radial openings 86 open out of the heat exchanger 1, opposite the passage well, so that the heat exchanger 1 allows a fluid flow from the passageway to the outside of the exchanger 1, or vice versa, and through each open intermediate space 82 delimited by two adjacent plates 2.
- One or both end plates 7 may also have an opening 18 similar to that defined by the plates 6 of the stack of plates 6.
- the opening 18 delimited by the end plate or plates 7 can thus act as inlet or outlet for the fluid or fluids intended to flow through the passageway.
- the first radial openings 84 extend all along the inner sides 60 delimiting it, that is to say extend all around the passage well, preferably in a continuous manner, to maximize the entrance or exit surface fluid within the corresponding open intermediate space 82.
- the second radial openings 86 can extend all along the sides 62 outside, that is to say all around the stack of plates 6, preferably continuously.
- the heat exchanger 1 may comprise at least one separating wall 22 extending through the passage well, along the latter, to delimit through the passage well in at least two compartments each for the circulation of a fluid.
- the open intermediate spaces 82 may further comprise one or more radial walls 87 arranged in the extension of the separating wall to delimit, within the open intermediate spaces 82, compartments each communicating with one of the compartments of the passageway.
- two fluids represented by the arrows 30 and 32, are intended to circulate through the passage well and the open intermediate spaces 82.
- the separating wall 22 may be formed by the juxtaposition and assembly of separating rods 220, each separating rod 220 extending through the opening 18 of one of the plates 6, joining two distinct locations on the inner side 60 of this plate. 6. According to the example of FIGS. 7 to 9, the separating rods extend rectilinearly and connect two diametrically opposed locations on the inner side.
- the plates 6 may have a peripheral wall member 24 extending at a distance and around the outer side 62, for example parallel thereto.
- the peripheral wall elements 24 delimit with the outer sides 62 of the plates 6 a guide duct for either dispensing fluids from an inlet / outlet 26 to the second radial openings 86, or to collect the fluids at the outlet of the second openings 86. radial and guide them to the entrance / exit 26.
- the plates 6 further include connecting rods 28 which connect the outer side 62 to the corresponding peripheral wall member 24. As shown in Figures 7 to 9, at least several of these connecting rods 28 are arranged in the extension of the radial walls 87, so as to compartmentalize the guide duct formed between the peripheral wall members 24 and the outer sides 62.
- the heat exchanger 1 advantageously comprises forced convection means, for example a fan 17, more specifically a centrifugal or centripetal fan, arranged for example inside the passage well. , so as to increase the flow of fluid in the passageway, which has the effect of improving the efficiency of the heat transfer, without increasing the bulk.
- the closed intermediate spaces 80 are advantageously configured to increase the distance traveled by the fluid (s) 2 from the inlet opening (s) 12a to the outlet opening (s) 12b in order to improve the transfer efficiency. of heat, for example by delimiting a fluid passage circuit extending from one end 61 to the other of the plates 6, and in particular by forcing the fluid or fluids 2 to be produced at least once, preferably several times the turn of the corresponding opening 18.
- closed intermediate spaces 80 may be configured to circulate fluid (s) 2 orthogonally to fluid 4 flowing through open intermediate spaces 82.
- the closed intermediate spaces 80 may have one or more guide walls 88, connecting the facing faces 64 opposite the corresponding adjacent plates 6, extending through these closed intermediate spaces 80, around the passage well, for example in a circular manner, to constrain the fluid or fluids 2 to circulate tangentially and from one end 61 to the other of the plates 6.
- the ends 61 may be formed here by the two faces of a radial wall 63 connecting the inner side 60 and the outer side 62 and the opposite faces 64 of the plates 6.
- the inlet and outlet openings 12a, 12b may they are positioned on the same side of this radial wall 63, adjacent to it, but separated by the guide wall 88.
- the plates 6 may include one or more projecting obstacles 65 arranged in the intermediate spaces 8 to impede the flow of fluid and thus promote heat transfer.
- the heat exchanger 1 comprises one or more spacer elements extending inside the open intermediate spaces 82 by connecting the two adjacent plates 6 delimiting these open intermediate spaces 80.
- the spacer member (s) may be formed by the peripheral wall (68) such that these peripheral walls (68) form a support structure through and along the stack of plates.
- the spacer member (s) may also comprise one or more partition walls for compartmentalizing the open intermediate spaces 82 as previously described, and / or radial ribs as shown in FIGS. 3 and 6.
- the elements 20 d The spacer is preferably spaced at regular intervals around the passageway.
- the invention also relates to a vehicle, in particular a motor vehicle, comprising the heat exchanger 1 having all or some of the characteristics described above.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1654054A FR3051036B1 (en) | 2016-05-04 | 2016-05-04 | THERMAL EXCHANGER OF PLASTIC MATERIAL AND VEHICLE COMPRISING THIS EXCHANGER |
PCT/FR2017/051073 WO2017191418A1 (en) | 2016-05-04 | 2017-05-04 | Plastic heat exchanger and vehicle comprising this exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3452772A1 true EP3452772A1 (en) | 2019-03-13 |
EP3452772B1 EP3452772B1 (en) | 2020-03-11 |
Family
ID=56511729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17725716.9A Active EP3452772B1 (en) | 2016-05-04 | 2017-05-04 | Plastic heat exchanger and vehicle comprising this exchanger |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3452772B1 (en) |
ES (1) | ES2790744T3 (en) |
FR (1) | FR3051036B1 (en) |
WO (1) | WO2017191418A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114111417A (en) * | 2021-11-25 | 2022-03-01 | 岭东核电有限公司 | Printed circuit board heat exchanger and heat exchange system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4303518A1 (en) * | 2022-07-07 | 2024-01-10 | Hamilton Sundstrand Corporation | Radially-flowing cross flow heat exchanger that increases primary heat transfer surface |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060174611A1 (en) * | 2005-02-07 | 2006-08-10 | Dilley Roland L | Exhaust gas cooler |
FR2910119B1 (en) * | 2006-12-18 | 2009-02-27 | Renault Sas | PLATE HEAT EXCHANGER |
-
2016
- 2016-05-04 FR FR1654054A patent/FR3051036B1/en not_active Expired - Fee Related
-
2017
- 2017-05-04 ES ES17725716T patent/ES2790744T3/en active Active
- 2017-05-04 EP EP17725716.9A patent/EP3452772B1/en active Active
- 2017-05-04 WO PCT/FR2017/051073 patent/WO2017191418A1/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114111417A (en) * | 2021-11-25 | 2022-03-01 | 岭东核电有限公司 | Printed circuit board heat exchanger and heat exchange system |
CN114111417B (en) * | 2021-11-25 | 2024-04-26 | 岭东核电有限公司 | Printed circuit board heat exchanger and heat exchange system |
Also Published As
Publication number | Publication date |
---|---|
FR3051036B1 (en) | 2018-04-27 |
FR3051036A1 (en) | 2017-11-10 |
WO2017191418A1 (en) | 2017-11-09 |
EP3452772B1 (en) | 2020-03-11 |
ES2790744T3 (en) | 2020-10-29 |
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