EP3430339A2 - Échangeur de chaleur, en particulier pour véhicule, plus particulierement pour des véhicules automobiles - Google Patents
Échangeur de chaleur, en particulier pour véhicule, plus particulierement pour des véhicules automobilesInfo
- Publication number
- EP3430339A2 EP3430339A2 EP17716945.5A EP17716945A EP3430339A2 EP 3430339 A2 EP3430339 A2 EP 3430339A2 EP 17716945 A EP17716945 A EP 17716945A EP 3430339 A2 EP3430339 A2 EP 3430339A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- heat exchanger
- tube
- exchanger
- reinforcing
- 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
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 43
- 239000012530 fluid Substances 0.000 claims description 36
- 230000002787 reinforcement Effects 0.000 claims description 24
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 238000005219 brazing Methods 0.000 claims description 4
- 230000008646 thermal stress Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05325—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05341—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2225/00—Reinforcing means
- F28F2225/04—Reinforcing means for conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
Definitions
- Heat exchanger in particular for vehicles, more particularly for motor vehicles
- the present invention relates to a heat exchanger, in particular for a vehicle, more particularly for motor vehicles.
- heat exchangers comprising a bundle of tubes disposed between two manifolds.
- One of the manifolds is divided into two compartments by a transverse partition.
- Each of the compartments communicates with a first or a second part or passes of the tube bundle thus defining a so-called U-shaped circulation.
- the tubes of the first pass and the tubes of the second pass experience a different expansion generating thermal and mechanical stresses at the tubes, especially their ends at the contact with the collector plate .
- These constraints are even more important with regard to the tubes located in the interface zone between the two passes, which can lead to leakage or even a break between the ends of the tubes and the header plate, which is to avoid.
- An inactive tube also called a dead tube, is a tube in which no fluid circulates.
- This solution has the disadvantage of postponing the thermal shock on the tubes adjacent to the inactive tube and significantly penalizes the thermal performance on the surface of the exchanger.
- the present invention relates in this sense to a heat exchanger which comprises: a collecting plate having a wall provided with orifices,
- each tube has a first end arranged to be housed in the corresponding orifice of said header plate, a reinforcing piece disposed between two tubes near their first end.
- the present invention thus uses the use of a reinforcing piece which is located between two tubes near their first end.
- a reinforcing piece which is located between two tubes near their first end.
- the thermal stresses occurring in this zone of the bundle of tubes can be reduced thanks to the presence of this reinforcement piece.
- the presence of the reinforcement piece according to the invention contributes to reinforcing as its name indicates the mechanical maintenance but also to absorb the thermal shocks that may occur in the area of thermal stress, in this case close to first ends of the tubes.
- the reinforcement piece proposed according to the invention also has the advantage of being able to integrate easily with the structure of a heat exchanger, which is particularly advantageous in terms of cost.
- said reinforcement piece is disposed between a first tube and a second tube
- said exchanger is configured so that the first tube receives a fluid circulating in a predetermined direction
- said exchanger is configured so that the second tube receives a fluid flowing in a predetermined direction
- said exchanger is configured so that the first tube receives a fluid circulating in a predetermined direction and that the second tube receives said circulating fluid in a direction opposite to that of the first tube, said exchanger is configured so that an end of the first tube situated at the level of said reinforcing piece is an inlet end of the fluid in the tube;
- said exchanger is configured so that one end of the second tube situated at the level of said reinforcing piece is an outlet end of the fluid outside the tube; said exchanger is arranged to allow a U flow of fluid,
- said reinforcement piece comprises two opposite faces respectively in contact with each of said two tubes
- said reinforcement piece comprises a face in contact with said collector plate
- each orifice of said collector plate is provided with collars
- said reinforcement piece is in contact with the collars of said two tubes
- said reinforcing piece is provided with a front face and a dorsal face
- front and rear faces are connected to one another by lateral faces
- one of said lateral faces has a protuberance arranged to face said collector plate
- said protuberance of said reinforcement piece is arranged to be brazed at the level of the collars arranged around the passage openings of the tubes between which the reinforcement piece is located,
- the tubes have a width, corresponding to a depth of the bundle, and the reinforcement piece extends substantially over the width of the tubes,
- said bundle of tubes comprises interleaves
- said exchanger comprises a housing located between each spacer and the collector plate
- said reinforcement piece is located in said housing
- a length of the interlayer situated between the tubes between which the reinforcing piece is fixed is shortened with respect to the length of the other spacers situated between the tubes
- the spacers between the tubes are of the same length
- said reinforcement piece has a bearing means capable of resting on said two tubes for holding the reinforcing piece between said two tubes, before brazing the bundle,
- said reinforcing member is made of aluminum
- said exchanger comprises a plurality of reinforcing pieces as indicated above.
- FIG. 1 is a front view of a heat exchanger according to the invention
- FIG. 2 is a cross-sectional view schematically illustrating a tube of a heat exchanger according to the invention
- FIG. 3 is a diagrammatic sectional view of part of a heat exchanger according to the invention.
- FIG. 4 is a perspective view of a reinforcement piece according to the present invention.
- the invention relates to a heat exchanger 1, in particular a heat exchanger 1 for a vehicle, allowing a heat exchange between a first fluid and a second fluid.
- the first fluid is, for example, the supercharging air of an engine, to cool.
- the second fluid is, for example, a flow of ambient air from the front of the vehicle, through the calender.
- Said exchanger 1 comprises a bundle of tubes 4 in which the first fluid flows.
- Each tube 4 comprises a first end opening into a first manifold 14 and a second end, opposite to said first end, opening into a second manifold 15.
- Each manifold 14, 15 comprises a header plate 2 and a cover 20 assembled together with seal insertion, or brazed.
- Said collector plates are, for example, of substantially rectangular shape.
- Said tubes 4 may also comprise interleaves or turbulators, not shown, arranged inside said tubes 4, to improve the heat exchange and the resistance to the internal pressure of said tubes.
- the second fluid circulates between the tubes 4.
- Interlayers 12 are, for example, arranged between these tubes 12, in particular corrugated inserts.
- Such spacers 12 make it possible to increase the heat exchange surface between the first fluid flowing in said tubes 4 and the second fluid passing through the exchanger 1 between the tubes 4.
- Said exchanger 1 further comprises, for example, an inlet flange 16 and / or an outlet flange 17 for the first fluid.
- Said flanges 16 and 17 may be located on each of the manifolds 14 and 15 or on the same manifold, depending on the circulation, in several passes, of the first fluid in the exchanger 1.
- a heat exchanger 1 whose circulation, called U, is in two passes.
- one of the manifolds 14 is divided into first and second compartments by a transverse partition 21 (see Figure 3).
- Each of the compartments communicates respectively with a first portion and a second portion of the bundle of tubes 4.
- said exchanger 1 is configured to allow a series circulation of a fluid in each part of the bundle of tubes 4 communicating with both compartments of said manifold 14.
- the inlet flange 16 and the outlet flange 17 are located on the double compartment manifold 14, as shown in FIG.
- Said first fluid thus enters through the inlet flange 16 in the first compartment and travels through the first part of the tube bundle 4, in the direction of the arrow marked F, that part of the fluid path representing the first pass.
- the fluid is then directed by the second manifold 15, comprising a single compartment, towards the second part of the bundle of tubes 4 which it travels in the direction of the arrow marked F ', this part of the path representing the second pass. It then opens into the second compartment of the manifold 14 to finally exit the exchanger 1 by the outlet flange 17.
- a U-shaped circulation is thus defined for the first fluid.
- Said fluid flowing in the heat exchanger is of different temperature in each pass, especially at the beginning of the first pass where it has not yet cooled and at the end of the second pass where it has undergone complete cooling.
- the tubes 4 of the exchanger 1 are, for example, flat and comprise two large opposite parallel flat faces 18, connected by lateral faces 19, here flat but which can also be rounded.
- the tubes 4 are of substantially rectangular cross section.
- the distance b between the lateral edges of the tube 4, that is to say the length of said cross section of the tube, is called the major axis of the tube. It corresponds to the width of the tube or depth of the beam.
- the distance a between the two large faces of the tube 4, that is to say the width of said cross section of the tube is called the small axis of the tube. It corresponds to a height of the tube.
- a collector plate 2 comprises orifices 3 into which the first ends of the tubes 4 open.
- Said orifices 3 make it possible to secure the tubes 4 to the collecting box 14, 15 and are here ordered in a single row in one direction corresponding to the direction of longitudinal extension of the plate, one parallel to the other.
- Said orifices 3 of the header plate 2 have a shape corresponding to the section of the first ends of said tubes 4.
- Said collector plate 2 further comprises means for fixing the cover 20. It may be for example crimping teeth. Said teeth extend along the perimeter of the header plate 2. These teeth serve to lock the cover on the header plate during assembly.
- the heat exchanger 1 as described above further comprises a reinforcement piece 6 located between a first tube 4a and a second tube 4b. Said reinforcing piece 6 is disposed near the first ends 5a, 5b of the two tubes 4a, 4b, outside the corresponding manifold 14.
- the reinforcement piece 6 comprises two opposite faces 7a, 7b respectively in contact with each of said two tubes 4a, 4b, at one of their large face 18.
- the reinforcing piece 6 also comprises a face 8, preferably in contact with the collecting plate 2.
- the face 8 of the reinforcement piece 6 which is in contact with the collector plate 2 may be in the form of a protuberance 1 1 projecting towards the collector plate 2. It is thus possible to integrate the reinforcement piece 6 according to the invention by brazing the two opposite faces 7a, 7b at the first and second tubes 4a, 4b.
- each orifice 3 of the header plate 2 is provided with collars 9.
- the protuberance 11 of the reinforcing member is brazed at the level of the collars 9 formed around the orifices 3 of the collector plate 2 so to reinforce the maintenance of the reinforcement piece 6 on the heat exchanger 1 of the present invention.
- edges of said protrusion 1 1 marry the upper and lower edges of the necks of the tubes 4a, 4b.
- the reinforcement piece 6 thus provided may be in contact with both the tubes 4a, 4b and the collars 9 of the corresponding orifices 3 of the collector plate 2.
- the two opposite faces 7a, 7b of the reinforcement piece 6 according to the invention are brazed on the first and the second tubes 4a, 4b and disposed therebetween.
- the heat exchanger is configured so that the first tube 4a receives a fluid flowing in a predetermined direction and the second tube 4b receives the fluid flowing in a direction opposite to that of the first tube 4a. Said tubes 4a, 4b are thus located on either side of the partition 21.
- the heat exchanger is configured so that the end 5a of the first tube 4a located at the reinforcing piece 6 is an inlet end of the fluid in the tube 4a and that the end 5b of the second 4b tube located at the reinforcing member 6 is an outlet end of the fluid out of the tube 4b.
- a thermal shock may occur, particularly between the two tubes 4a, 4b which have the largest temperature difference at the first ends 5a, 5b of the first and second tubes 4a, 4b.
- the presence of the reinforcing piece 6 between the two tubes 4a, 4b thus makes it possible to reduce both the mechanical stresses and the thermal stresses that may occur.
- a length of the spacer 12 located between the tubes facing the reinforcing member 6 is shortened relative to the length of the other spacers between the tubes.
- the heat exchanger 1 comprises an identical housing located between each spacer 12 and the collector plate 2. Said housing is sufficiently large so that the reinforcing piece 6 can be located in this housing, without coming to constrain the spacer located between the tubes 4a, 4b which can then be of the same length as the other spacers.
- the reinforcing piece 6 has a front face 7a and a back face 7b (not visible), opposite and parallel to said front face 7a.
- the front faces 7a and dorsal 7b are planar. They are connected to each other by side faces 10a, 10b, 10c, 10d (10b and 10d not visible). More preferably, in the reinforcing piece 6 illustrated in FIG. 4, a first 10c of said lateral faces, defining an upper face, is provided with said protuberance 11.
- a second 10d of said side faces forms a lower face 10d, opposite said upper face 10c.
- the other lateral faces 10a, 10b connect said upper faces 10c and lower 10d. Said faces 7a, 7b, 10a-10d form here a rectangle parallelogram.
- the distance between said other lateral faces 10a, 10b, indicated d in the figure, preferably corresponds to the major axis a tubes.
- the reinforcing piece 6 illustrated extends to a distance of between 1 and 5 cm, preferably equal to about 3 cm, starting from the collecting plate 2.
- the distance involved, illustrated h in Figures 2 and 4 is measured from a distal edge of the collars. In other words, it is the distance between the lower face 10d and a base of the protrusion January 1 of the reinforcing piece 6 or the height h of the parallelogram mentioned above.
- the reinforcement piece 6 is here provided with a support means 13 which can rest on said two tubes 4a, 4b, before the reinforcement piece 6 is brazed on the heat exchanger 1.
- the reinforcing piece 6 can be held between two tubes 4a, 4b without the risk of slipping between them, which greatly facilitates the handling of the proposed reinforcing member 6, before brazing the beam of the exchanger 1.
- the support means 13 is located on one of the other lateral faces 10a and is intended to bear against a portion of the lateral faces 19 of the tubes 4a, 4b . It then facilitates in particular the flat handling of the exchanger, before soldering.
- Said tubes 4 may be tubes 4 folded with closure of the tube at one of the side faces 19 of the tube 4. In such a case, it will be advantageous to provide the support means 13 along the opposite side face .
- the reinforcing piece 6 is made of aluminum, like the rest of the bundle.
- the heat exchanger according to the present invention is not limited to the aforementioned embodiments.
- the heat exchanger 1 may comprise a plurality of reinforcing pieces 6, in particular on either side of that illustrated.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1652307A FR3049049B1 (fr) | 2016-03-18 | 2016-03-18 | Echangeur de chaleur, en particulier pour vehicule, plus particulierement pour des vehicules automobiles |
PCT/FR2017/050604 WO2017158299A2 (fr) | 2016-03-18 | 2017-03-16 | Échangeur de chaleur, en particulier pour véhicule, plus particulierement pour des véhicules automobiles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3430339A2 true EP3430339A2 (fr) | 2019-01-23 |
EP3430339B1 EP3430339B1 (fr) | 2020-01-29 |
Family
ID=56119542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17716945.5A Active EP3430339B1 (fr) | 2016-03-18 | 2017-03-16 | Échangeur de chaleur, en particulier pour véhicule, plus particulièrement pour des véhicules automobiles |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3430339B1 (fr) |
FR (1) | FR3049049B1 (fr) |
WO (1) | WO2017158299A2 (fr) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2564153A (en) * | 1946-08-13 | 1951-08-14 | Garrett Corp | Shielded heat exchanger |
JPS6122192A (ja) * | 1984-07-06 | 1986-01-30 | Ngk Insulators Ltd | 熱交換器 |
US8656988B1 (en) * | 2010-03-03 | 2014-02-25 | Adams Thermal Systems, Inc. | External reinforcement of connections between header tanks and tubes in heat exchangers |
-
2016
- 2016-03-18 FR FR1652307A patent/FR3049049B1/fr not_active Expired - Fee Related
-
2017
- 2017-03-16 WO PCT/FR2017/050604 patent/WO2017158299A2/fr active Application Filing
- 2017-03-16 EP EP17716945.5A patent/EP3430339B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
WO2017158299A3 (fr) | 2017-11-16 |
EP3430339B1 (fr) | 2020-01-29 |
FR3049049A1 (fr) | 2017-09-22 |
FR3049049B1 (fr) | 2019-04-19 |
WO2017158299A2 (fr) | 2017-09-21 |
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