EP3099994A1 - Wärmetauscher für ein kraftfahrzeug - Google Patents
Wärmetauscher für ein kraftfahrzeugInfo
- Publication number
- EP3099994A1 EP3099994A1 EP15703919.9A EP15703919A EP3099994A1 EP 3099994 A1 EP3099994 A1 EP 3099994A1 EP 15703919 A EP15703919 A EP 15703919A EP 3099994 A1 EP3099994 A1 EP 3099994A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- tubes
- collector
- plate
- orifices
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 44
- 238000004378 air conditioning Methods 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 28
- 238000005219 brazing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- 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
- F28F9/0229—Double end plates; Single end plates with hollow spaces
-
- 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
- F28F2225/08—Reinforcing means for header boxes
Definitions
- the subject of the present invention is a heat exchanger, in particular for a vehicle air conditioning fluid circuit, and more particularly a fluid / fluid type exchanger intended to be traversed by a fluid under high pressure.
- the heat exchangers for an air conditioning fluid circuit of a vehicle are capable of being traversed by a refrigerant fluid in the supercritical state such as carbon dioxide (C0 2 ).
- This fluid remains substantially in the gaseous state and under a high operating pressure usually between 100 and 150 bar. It is therefore necessary for such heat exchangers resist such pressures and is projected for this purpose a pressure of generally substantially equivalent burst to three times the value of the operating pressure.
- such exchangers comprise a plurality of flat tubes stacked one on top of the other and having channels for circulating a first fluid, a second fluid circulating between the tubes.
- Each end of the tubes is connected to a manifold for distributing the first fluid at one end and collect at the other end.
- the invention aims, for this purpose, a heat exchanger, in particular exchanger for air conditioning circuit of a vehicle, allowing a heat exchange between first and second fluids, said exchanger comprising a plurality of circulation tubes of the first fluid , stacked on top of one another and at least one manifold comprising a collecting plate, said manifold plate comprising orifices for introducing tube ends, characterized in that said ends of said tubes are assembled at least two by two in a single one of said orifices for introducing the collecting plate.
- assembling the ends of the tubes at least in pairs makes it possible to obtain a heat exchanger, compact and compact, in which the tubes of one and the same assembly of tubes, in particular the tubes of one and the same pair of tubes.
- the spacing between two assemblies of tubes, in particular between two pairs of tubes is increased relative to an exchanger in which each end of tubes would be connected separately to the collector, which makes it possible to reinforce the zone. of cooperation between the ends of the tubes and the collector by different reinforcing means and to have a resistant heat exchanger.
- said collector comprises an intermediate reinforcing plate comprising fluid passage orifices bearing on said collector plate,
- said reinforcing plate comprises straps
- said collector plate comprises flanges bordering said orifices of said collector plate
- said collector is configured so that said collars bear on said straps
- each of said straps is in contact with a lower part and an upper part of a flange bordering two orifices adjacent to said orifices of said collector plate,
- said orifices of said reinforcing plate are of a size greater than the dimension of the orifices of said collector plate
- said collector comprises a cover
- said reinforcing plate forms a spacer between said cover and said collector plate
- said collecting plate longitudinally borders the cover and said reinforcing plate so as to form a unitary assembly
- said heat exchanger further comprises an additional plate for brazing said cover and said reinforcing plate together,
- said lid defines a plurality of chambers in said manifold
- said heat exchanger comprises a flange enabling the supply of each of the chambers of said collector
- said flange comprises a number of ducts equivalent to the number of chambers of the collector
- said tubes are corrugated, said tubes comprise at least one corrugation line extending obliquely with respect to the longitudinal axis of the tube,
- said stacked tubes are in contact with each other, between their ends,
- said tubes are in contact with each other at the vertices of their corrugations
- said tubes are brazed together at points of contact
- said tubes have a section adapted so that the section formed by the tube ends of said assembled tubes is oblong,
- said section has two large opposite sides, in particular straight, connected by a radius formed in combination by a short side of each of the tubes of the corresponding pair of tubes,
- one of the two fluids is a gas under high pressure and the other fluid is a liquid.
- FIG. 1 is a perspective view in longitudinal section of a heat exchanger according to the invention, in a direction from above,
- FIG. 2 is a perspective view of the inside of the exchanger shown in FIG. 1;
- FIG. 3 is a perspective view in longitudinal section of one end of the exchanger shown in FIG. 1, in a side orientation;
- FIG. 4 is a detail view of FIG. 1, showing a collector
- FIG. 5 is a view similar to FIG. 4 showing another embodiment of a collector according to the invention.
- FIG. 6 is an exploded view of several tubes used in the exchanger of FIG. 1;
- FIG. 7 is a perspective view of a tube end used in the exchanger of FIG. 1, cut transversely,
- FIG. 8 is a perspective view of two tubes used in the exchanger of Figure 1, the ends are assembled.
- the invention relates to a heat exchanger 1, in particular exchanger for an air conditioning circuit of a vehicle, allowing a heat exchange between a first fluid F1 and a second fluid F2.
- Said exchanger 1 comprises a plurality of tubes 3 for circulating the first fluid F1, stacked on one another and at least one manifold 5 comprising a collecting plate 7.
- said exchanger 1 comprises, at each of these ends 1a and 1b, first and second collectors 5a and 5b.
- the first collector 5a is an inlet manifold of the first fluid F1, which is here a gas under high pressure, such as CO 2 and the second collector 5b is an outlet manifold of this fluid F1.
- Each manifold 5a and 5b is connected to the plurality of tubes 3, also called beam 4, by the manifold plate 7.
- the first fluid F1 thus passes successively through said inlet manifold 5a, said bundle 4 and said outlet manifold 5b.
- Said exchanger 1 comprises, here, a housing 9 formed of side walls 9a and 9b.
- Said walls 9a and 9b comprise an inlet orifice 1 1a and / or an outlet orifice 1 1b for the second fluid F2 which is here a heat transfer liquid, in particular brine, circulating between the stacked tubes 3 of to cool the first fluid F1.
- the inlet 1 1a of the second fluid F2 is located at the end 1b where the outlet manifold 5b of the first fluid F1 is located and the outlet orifice 1 1b is located opposite, ie at the end 1a, to the inlet manifold 5a of the first fluid F1. In this way, counterflow of said fluids is available.
- said collecting plate 7 comprises orifices 13 for introducing one end 3a of the tubes 3 so that said ends 3a of said tubes 3 are assembled two by two in one and the same of said insertion orifices 13. the collector plate 7. There is in this way a collector having a compact and robust configuration.
- Said collector 5 may also comprise a cover 15 and an intermediate plate, called a reinforcing plate 17.
- Said reinforcing plate 17 is configured to form a spacer between a wall
- said orifices 19 of said reinforcing plate 17 are of a dimension greater than the size of the orifices 13 of said plate 7. Between each of its orifices 19, said reinforcing plate 17 comprises shoulder straps.
- each of said straps 21 configured to bear on collars 23 bordering said orifices 13 of said header plate 7.
- each of said straps 21 is in contact with a lower portion 23a and an upper portion 23b of the same collar 23 bordering two orifices 13 neighbors.
- Said reinforcing plate 17 thus limits the risk of buckling of the manifold plate 7 at the level of the flanges 23 bordering the introduction orifices 13, and between said introduction orifices 13, in particular when the heat exchanger 1 is intended for a gas under high pressure.
- Said lid 15 can define several chambers 25 in said manifold 5, as shown in FIG. 5.
- the lid 15 then comprises legs 27 delimiting on each side a chamber 25.
- three parallel chambers 25 formed by two legs 27 are represented.
- the supply of said first fluid collector F1 and the outlet thereof can be done, as shown here, by means of a supply flange 29.
- Said supply flanges 29 may comprise several ducts 31. Particularly in the case of a manifold 5 comprising a plurality of chambers 25, said flange 29 comprises a number of ducts 31 equivalent to the number of chambers 25 of the manifold 5, each duct 31 feeding a chamber 25.
- the flange 29 shown in FIGS. , 3 to 5 comprises a fluid inlet conduit 31a which divides into three regularly distributed ducts 31b, possibly of lower section to the inlet duct 31a, each of the three ducts 31b supplying one of the three chambers 25.
- This type of flange 29 associated with a plurality of chambers 25 allows a uniform distribution of the fluid F1 in the different chambers 25 and an optimized supply, which can be advantageous in a heat exchanger for gas under high pressure.
- Said flange 29 can be carried by said cover 15.
- the latter here has an opening allowing the passage of the first fluid F1 in the manifold 5.
- Said 1 further comprises an additional plate 33 placed between the cover 15 and the reinforcing plate 17.
- Said additional plate 33 allows the brazing of said cover 15 and said reinforcing plate 17 between them.
- it is coated for example with a brazing alloy.
- the additional plate 33 has a contour surface substantially identical to that of the reinforcing plate 17.
- Said additional plate 33 also comprises orifices 35 for the passage of the first fluid F1 facing the orifices 13 of the plate manifold 7 and 19 holes of the reinforcing plate 17 in which the end 3a of a pair of tubes 3 is inserted.
- the additional plate 33 has legs 37 complementary to the legs 27 of the cover 15 delimiting each of the chambers 25.
- the cover 15 and the reinforcing plate 17 are thus soldered together over a wide contact surface.
- Said additional plate 33 further comprises, here, shoulder straps 38, located opposite straps 21 of the reinforcing plate 17.
- Said straps 38 of the additional plate 33 and its legs 37 are orthogonal and define between them the orifices 35 of said additional plate 33. In the example illustrated, there are therefore three orifices 35 of the additional plate 33 opposite one and the same orifice 19 of the reinforcing plate 17.
- said collecting plate 7 comprises two parallel outer side portions 39a and 39b bordering longitudinally the cover 15 and said reinforcing plate 17 and ending with a return 41 over its entire height in contact with said flange 29 so as to form with the cover 15 and said reinforcing plate 17 a unitary assembly.
- the tubes 3 are extruded flat tubes comprising a plurality of channels 43 for the circulation of the first fluid F1, here a gas under high pressure. Said tubes 3 are deformed so as to form a plurality of corrugation lines 45.
- the lines 45 are, here, parallel to each other and are substantially identical.
- the corrugation lines 45 extend obliquely with respect to the longitudinal axis of the tube 3 and the tubes 3 are assembled in such a way as to cross the lines of FIG. ripple 45 of contiguous tubes 3.
- Said tubes 3 stacked and are in contact with each other, particularly at portions of the peaks 47 of the corrugations, called contact points.
- said tubes 3 are brazed together at their points of contact.
- Such a structure allows create a sinuous network between the tubes 3 to disrupt the circulation of the second fluid F2 and provide a high-performance heat exchange between the two fluids F1 and F2. This further enhances the robustness of the product.
- the tubes may have, at their end 3a, a particular section so that the section formed by two ends 3a of assembled tubes is oblong, advantageously formed of straight and / or convex portion
- the ends 3a of the tubes 3 are substantially planar, ie devoid of corrugation lines 45, in ways that can be assembled in pairs and inserted into the insertion openings 13 of the tubes.
- Said tubes 3 may be configured so as to be longitudinally held so that their end remains in the thickness of the reinforcing plate 17 set back from one face of said reinforcing plate 17 turned towards the inside of the collector 5 , even remains set back from a free edge of said collars 23 of the collector plate 7.
- all the elements of the exchanger 1 are brazed together in one step, according to one or more preassembly steps.
- each insertion orifice is sized to receive at least two tubes.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15703919T PL3099994T3 (pl) | 2014-01-30 | 2015-01-30 | Wymiennik ciepła do pojazdu samochodowego |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1450740A FR3016958B1 (fr) | 2014-01-30 | 2014-01-30 | Echangeur de chaleur pour vehicule automobile |
PCT/EP2015/051952 WO2015114101A1 (fr) | 2014-01-30 | 2015-01-30 | Echangeur de chaleur pour véhicule automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3099994A1 true EP3099994A1 (de) | 2016-12-07 |
EP3099994B1 EP3099994B1 (de) | 2018-02-28 |
Family
ID=50549122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15703919.9A Active EP3099994B1 (de) | 2014-01-30 | 2015-01-30 | Wärmetauscher für ein kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US10197341B2 (de) |
EP (1) | EP3099994B1 (de) |
FR (1) | FR3016958B1 (de) |
PL (1) | PL3099994T3 (de) |
WO (1) | WO2015114101A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190257592A1 (en) * | 2018-02-20 | 2019-08-22 | K&N Engineering, Inc. | Modular intercooler block |
IT201800005676A1 (it) | 2018-05-24 | 2019-11-24 | Parete di testa per scambiatore di calore e relativo scambiatore di calore a fascio tubiero | |
US11098962B2 (en) * | 2019-02-22 | 2021-08-24 | Forum Us, Inc. | Finless heat exchanger apparatus and methods |
US11725889B1 (en) * | 2019-02-26 | 2023-08-15 | National Technology & Engineering Solutions Of Sandia, Llc | Refractory high entropy alloy compact heat exchanger |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1478015A (en) * | 1973-07-27 | 1977-06-29 | Delanair Ltd | Heat exchanger |
US5123482A (en) * | 1991-11-14 | 1992-06-23 | Wynn's Climate Systems, Inc. | Oval tube heat exchanger |
FR2786558B1 (fr) * | 1998-11-30 | 2001-02-02 | Valeo Thermique Moteur Sa | Tube plat pour echangeur de chaleur de largeur reduite |
JP4107051B2 (ja) * | 2002-02-19 | 2008-06-25 | 株式会社デンソー | 熱交換器 |
JP3960233B2 (ja) * | 2002-04-03 | 2007-08-15 | 株式会社デンソー | 熱交換器 |
DE102004011608A1 (de) * | 2004-03-18 | 2005-10-13 | Obrist Engineering Gmbh | Wärmetauscher einer Fahrzeugklimaanlage |
KR101090225B1 (ko) * | 2005-01-27 | 2011-12-08 | 한라공조주식회사 | 열교환기 |
DE102005008409A1 (de) * | 2005-02-24 | 2006-08-31 | Modine Manufacturing Co., Racine | Wärmetauscher mit Rohren und Rippen sowie Herstellungsverfahren |
JP2007278556A (ja) * | 2006-04-04 | 2007-10-25 | Denso Corp | 熱交換器 |
US8322407B2 (en) * | 2008-04-29 | 2012-12-04 | Honda Motor Co., Ltd. | Heat exchanger with pressure reduction |
FR2992713A1 (fr) * | 2012-06-29 | 2014-01-03 | Valeo Systemes Thermiques | Faisceau d'echange de chaleur et echangeur de chaleur comprenant ledit faisceau |
-
2014
- 2014-01-30 FR FR1450740A patent/FR3016958B1/fr not_active Expired - Fee Related
-
2015
- 2015-01-30 WO PCT/EP2015/051952 patent/WO2015114101A1/fr active Application Filing
- 2015-01-30 US US15/115,292 patent/US10197341B2/en active Active
- 2015-01-30 EP EP15703919.9A patent/EP3099994B1/de active Active
- 2015-01-30 PL PL15703919T patent/PL3099994T3/pl unknown
Also Published As
Publication number | Publication date |
---|---|
FR3016958B1 (fr) | 2019-05-17 |
FR3016958A1 (fr) | 2015-07-31 |
PL3099994T3 (pl) | 2018-09-28 |
WO2015114101A1 (fr) | 2015-08-06 |
US10197341B2 (en) | 2019-02-05 |
US20170010054A1 (en) | 2017-01-12 |
EP3099994B1 (de) | 2018-02-28 |
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