EP2411754B1 - Heat exchanger, especially condenser for air conditioning - Google Patents
Heat exchanger, especially condenser for air conditioning Download PDFInfo
- Publication number
- EP2411754B1 EP2411754B1 EP10710341.8A EP10710341A EP2411754B1 EP 2411754 B1 EP2411754 B1 EP 2411754B1 EP 10710341 A EP10710341 A EP 10710341A EP 2411754 B1 EP2411754 B1 EP 2411754B1
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- EP
- European Patent Office
- Prior art keywords
- fluid
- heat exchanger
- exchanger according
- inlet
- outlet
- 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.)
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Links
- 238000004378 air conditioning Methods 0.000 title claims description 5
- 239000012530 fluid Substances 0.000 claims description 55
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 239000012809 cooling fluid Substances 0.000 claims description 5
- 241000826860 Trapezium Species 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
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
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
- F28F9/0221—Header boxes or end plates formed by stacked elements
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
Definitions
- the invention relates to heat exchangers, especially for motor vehicles.
- a heat exchanger comprising an alternating stack of blades for the circulation of a first fluid and a second fluid, corresponding to the preamble of claim 1.
- Such an exchanger is known from the document WO 2005 / 038375A1 .
- Such heat exchangers can be used, for example, as air conditioning condensers for motor vehicles.
- the first fluid can then be constituted by a refrigerant, with or without phase change, and the second fluid by a cooling fluid such as water.
- Heat exchangers of this type are often made by a technology of stacked plates having corrugations to disturb the flow of the two fluids. These plates generally have raised peripheral edges which are assembled together in a sealed manner to delimit between the plates of the first and second circulation blades for the respective fluids.
- the disadvantage of such plates is that they offer little modularity as regards the size and the adaptation of the passage sections according to the properties of the fluids. Moreover, problems of soldering, and thus of sealing and resistance to pressure, may appear at the level of the fluid passages.
- This solution also has a number of disadvantages, including a complexity of construction. In others, it requires a reported manifold for each fluid at each end of the beam.
- the object of the invention is in particular to overcome the aforementioned drawbacks.
- a heat exchanger of the type defined in the introduction which comprises a beam formed by an alternating stack of profile flat tubes selected for the circulation of the first fluid and disruptive for the circulation of the second fluid between the tubes; an inlet manifold box and an outlet manifold respectively connected to two ends of the bundle for the admission and evacuation of the first fluid, said manifolds being each formed by a stack of end plates having a bottom provided with a peripheral rim, in particular with a substantially U-shaped contour, so that the end plates can be assembled in pairs in a sealed manner by cooperation of their respective peripheral rims, each time delimiting a chamber having an inlet profile, homologous to the profile of a tube for inserting a tube end, the bottom of each collector plate having an opening for the communication of the chambers; and a casing enveloping the beam, this casing being provided an inlet and an outlet for the circulation of the first fluid, and an inlet and an outlet for the circulation of the second fluid.
- the heat exchanger of the invention comprises a beam formed by an alternating stack of tubes and disrupters for defining respectively the circulation blades of the first fluid and the second fluid.
- the inlet and outlet manifolds are each defined by a stack of end plates, forming blade heads, which are interlocked with each other by virtue of the geometry of their respective peripheral rims, which makes it possible to define each time a chamber in communication with a tube.
- Each chamber defines an introduction slot for the tube which has an internal profile homologous to the profile of a tube, which allows a sealed engagement of the end of the tube in the corresponding insertion slot.
- the chambers communicate with one another, which makes it possible to define an inlet or outlet manifold for the first fluid.
- the casing which envelops the beam makes it possible to ensure the circulation of the second fluid which is in heat exchange with the first fluid.
- Such a heat exchanger can be made by a brazed technology in a single operation, once the various components of the heat exchanger held tight together.
- peripheral edges of the end plates are shaped so that the chambers defined by the stack of said plates have, for example, a height substantially identical to that of the tubes.
- height is meant the stacking direction of said plates.
- such a heat exchanger finds particular application in the field of motor vehicles, for example to achieve an air conditioning condenser.
- FIGS. 1 , 3 , 12 and 13 represent different views of a heat exchanger 10 according to the invention in the assembled state.
- FIG 2 represents this heat exchanger 10 in exploded perspective view.
- the heat exchanger 10 comprises a beam 12 formed by an alternating stack of flat tubes 14 of profile chosen for the circulation of a first fluid F 1 and disruptors 16 for the circulation of a second fluid F 2 between the tubes.
- the disrupters 16 are here corrugated interlayers whose respective undulations come into contact with the tubes 14.
- the heat exchanger 10 further comprises an inlet manifold 18 and an outlet manifold 20 connected respectively to two ends of the bundle 12 for the admission and evacuation of the first fluid F 1 .
- These two manifolds are formed analogously, that is to say by a stack of end plates 22 each having a bottom 24 provided with a peripheral flange 26 having a generally U-shaped general outline.
- each end plate 22 is generally flat and the peripheral rim 26 forms a chosen angle with the flat bottom 24, so that the end plates 22 can be nested and assembled tightly. by cooperation of their respective peripheral edges. Indeed, as these peripheral flanges 26 are inclined, when two end plates are mutually nested, they provide between them an introduction slot whose internal profile is homologous to the profile of a tube, which allows to insert to each time a tube end sealingly.
- a chamber 28 is defined for the first fluid, as can be seen in particular in FIG. figure 4 .
- These chambers 28 can communicate with each other through at least one opening 30 provided in the bottom of each end plate 22 to ensure fluid communication between the chambers.
- the openings 30 are circular and aligned with each other in the direction of stacking the beam 12.
- the exchanger 10 further comprises a housing 32 which surrounds the beam.
- This housing 32 comprises a U-section housing 34 for housing the bundle 12 and extending to the end plates 22 and a cover 36 for closing the housing.
- the housing 32 carries an inlet 38 and an outlet 40 for the first fluid F 1 , as well as an input 42 and an output 44 for the second fluid F 2 .
- the inlet 38 and the outlet 40 for the first fluid F 1 are carried by the cover 36 and open respectively into the inlet manifold 18 and the outlet manifold 20.
- the inlet 38 and the outlet 40 are formed by two flanges having respective bores 46 and 48 which communicate each time with the corresponding collecting box through a circular opening 50 or 52 ( figure 2 ) that includes the cover 36.
- the bore 46 is aligned with the opening 50 and with the openings 30 of the end plates 22 forming the manifold 18.
- the bore 48 is aligned with the opening 52 and with the openings 30 of the end plates 22 forming the manifold 20.
- two fluid distribution conduits communicating with the tubes 14 are formed, these ducts being closed both by the bottom of the housing.
- the inlet 42 and the outlet 44 for the second fluid F 2 are carried by the casing 34.
- This housing has a bottom wall 54 and two side walls 56 and 58 which come to envelop the beam.
- the inlet 42 and the outlet 44 are formed by pipes which are carried by the side wall 56 of the casing 34.
- the lateral wall 56 comprises a flat central part 60 connected to two lateral parts 62 and 64 on which the tubing 42 and 44 are respectively mounted.
- the side wall 58 has a homologous shape. As a result, the casing is wider in its central portion than in its end portions in the vicinity of the collector plates.
- a free volume 100 is defined between the casing and the beam ( figure 7 ), at the side portions 62, 64 of the housing to allow the distribution of the second fluid between the tubes, to the right of the inlet pipe 42 of said second fluid, and its collection to the right of the outlet pipe 44 of the beam.
- the cover 36 has two respective raised edges 66 and 68 ( figures 2 and 3 ), provided with end portions 67, 69 intended to come into contact with the respective end edges 70, 72 of the side portions 62, 64 of the side walls 56 and 58 to close said free volume 100 at the top.
- the end portions 67, 69 of the raised edges 66, 68 of the cover 36 are offset from the central portion of said raised edges in the direction orthogonal to the longitudinal axis of said cover by about one time. thickness of said lid.
- the cover 36 can thus cooperate with the bottom of the last end plate 22 while being connected, by a chosen curvature end portions 67, 69, to the end edges 70, 72 side portions 64 of the side walls 56 and 58 of the housing 34.
- the various components of the heat exchanger are advantageously made of aluminum or aluminum-based alloy and provided with solder plating, at the appropriate places, which makes it possible to assemble an assembly of these components together in a single operation in a brazing furnace, while ensuring a seal between the various components.
- each end plate 22 forms with the bottom 24 a chosen angle A which is an acute angle and which is calculated according to the thickness of the plate.
- Each end plate 22 is advantageously formed by stamping. When two end plates are nested therebetween, they delimit a slot which has a homologous entrance profile of the profile of a tube, that is to say the general shape of an elongated trapezium having two opposite large sides. connected to two opposite small inclined sides. This shape is homologous to that of the section of a tube as represented on the figure 8 .
- Each tube 14 is a flat tube delimited by two large opposite faces 74 and 76 and two small opposite inclined faces 78 and 80 which each form, with the faces 74 and 76, an angle substantially corresponding to the angle A mentioned above ( figure 6 ).
- the profile of the tube has substantially the shape of an elongate trapezium which comes to match the shape of the insertion slot defined between two end plates 22 adjacent.
- the faces 78 and 80 are connected to the faces 74 and 76 by rounding.
- each tube 14 is made by extrusion and comprises a multiplicity of internal channels 82 ( Figures 8 and 9 ).
- the end plates 22 are not strictly identical between they.
- two types of end plates are provided, advantageously a plate 22a as shown in FIG. figure 10 and a plate 22b as shown on the figure 11 .
- the plates 22a and 22b are arranged alternately.
- the plate 22a shown on the figure 10 here receives the end of the cover 36.
- the plate 22b shown in FIG. figure 11 receives an end of a flat tube 14.
- the end plate 22a of the figure 10 comprises protruding lugs, namely two lugs 84 and two lugs 86, all these lugs protruding from the side of the peripheral rim to serve as an abutment to an adjacent plate.
- the plate 22b also has protruding lugs, namely two lugs 88 and two lugs 90. All these lugs are formed by stamping the header plate and have a height substantially corresponding to the height of a tube or a disrupter .
- the lugs 84 and 86 of the plate 22a are arranged at different locations of the lugs 88 and 90 of the plate 22b because they are made by stamping so as not to come into correspondence with each other.
- the aforementioned pins are soldered on the bottom of an adjacent end plate, which allows to define a fluid chamber resistant to pressure, which is particularly interesting in the case where the first fluid is a high pressure fluid such as CO 2 .
- each end plate is bounded by an end edge 92 which continues respectively by two free ends 94 of the peripheral flange 26, which helps to define the input profile for a tube end.
- the two free ends 94 comprise notches 96 which facilitate the introduction of the free ends of the tubes and serve as insertion stops.
- the lugs 84, 86, 88 and 90 above are provided by a thin, non-emerging cut, and they also allow the guiding of the fluid between the end plates as seen on the figure 11 .
- the housing 34 is brazed to the beam and substantially conforms to its shape, which optimizes the size of the exchanger.
- it may be a box, closed by a cover, for example crimped on the box, the seal between the box and the lid being provided, in particular, by a seal.
- the cover may consist of an end plate of the bundle such as, for example, the plate 36, provided radially extended over its entire periphery to define a fastening zone, including crimping, to the box.
- the tubings for the second fluid may be provided on the box, in particular being derived from material.
- a box is described, for example, in the patent application DE 19902504 .
- the heat exchanger can constitute an air conditioning condenser of motor vehicles.
- the fluid F 1 is then constituted by a refrigerant and the fluid F 2 by a cooling fluid.
- the refrigerant may be a phase-change fluorinated fluid, or a fluid operating in supercritical mode, such as for example CO 2 .
- the cooling fluid it may be water added with antifreeze.
- the heat exchanger shown in the figures is particularly suitable for use as a condenser operating with a refrigerant CO 2 type. Indeed, this heat exchanger can withstand high operating pressures as encountered with a CO 2 type fluid.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
L'invention se rapporte aux échangeurs de chaleur, notamment pour véhicules automobiles.The invention relates to heat exchangers, especially for motor vehicles.
Elle concerne plus particulièrement un échangeur de chaleur comprenant un empilement alterné de lames pour la circulation d'un premier fluide et d'un second fluide, correspondant au préambule de la revendication 1. Un tel échangeur est connu du document
De tels échangeurs de chaleur peuvent être utilisés, par exemple, comme condenseurs de climatisation pour des véhicules automobiles. Le premier fluide peut être alors constitué par un fluide frigorigène, avec ou sans changement de phase, et le second fluide par un fluide de refroidissement tel que de l'eau.Such heat exchangers can be used, for example, as air conditioning condensers for motor vehicles. The first fluid can then be constituted by a refrigerant, with or without phase change, and the second fluid by a cooling fluid such as water.
Les échangeurs de chaleur de ce type sont souvent réalisés par une technologie de plaques empilées présentant des ondulations pour perturber l'écoulement des deux fluides. Ces plaques ont généralement des bords périphériques relevés qui sont assemblés entre eux de manière étanche pour délimiter entre les plaques des premières et des secondes lames de circulation pour les fluides respectifs. L'inconvénient de telles plaques est qu'elles offrent peu de modularité en ce qui concerne l'encombrement et l'adaptation des sections de passage en fonction des propriétés des fluides. Par ailleurs, des problèmes de brasage, donc d'étanchéité et de tenue à la pression, peuvent apparaître au niveau des passages de fluide.Heat exchangers of this type are often made by a technology of stacked plates having corrugations to disturb the flow of the two fluids. These plates generally have raised peripheral edges which are assembled together in a sealed manner to delimit between the plates of the first and second circulation blades for the respective fluids. The disadvantage of such plates is that they offer little modularity as regards the size and the adaptation of the passage sections according to the properties of the fluids. Moreover, problems of soldering, and thus of sealing and resistance to pressure, may appear at the level of the fluid passages.
On connaît aussi, d'après le brevet
Cette solution présente également un certain nombre d'inconvénients, notamment une complexité de construction. En autres, il nécessite une boîte collectrice rapportée pour chaque fluide, à chaque extrémité du faisceau.This solution also has a number of disadvantages, including a complexity of construction. In others, it requires a reported manifold for each fluid at each end of the beam.
L'invention a notamment pour but de surmonter les inconvénients précités.The object of the invention is in particular to overcome the aforementioned drawbacks.
Elle propose à cet effet un échangeur de chaleur du type défini en introduction, lequel comprend un faisceau formé par un empilement alterné de tubes plats de profil choisi pour la circulation du premier fluide et de perturbateurs pour la circulation du second fluide entre les tubes ; une boîte collectrice d'entrée et une boîte collectrice de sortie reliées respectivement à deux extrémités du faisceau pour l'admission et l'évacuation du premier fluide, lesdites boîtes collectrices étant formées chacune par un empilement de plaques d'extrémité présentant un fond muni d'un rebord périphérique, notamment à contour sensiblement en U, en sorte que les plaques d'extrémité peuvent être assemblées deux à deux de manière étanche par coopération de leurs rebords périphériques respectifs en délimitant à chaque fois une chambre ayant un profil d'entrée, homologue du profil d'un tube pour l'insertion d'une extrémité de tube, le fond de chaque plaque collectrice ayant une ouverture pour la communication des chambres ; et un boîtier enveloppant le faisceau, ce boîtier étant muni d'une entrée et d'une sortie pour la circulation du premier fluide, et d'une entrée et d'une sortie pour la circulation du second fluide.It proposes for this purpose a heat exchanger of the type defined in the introduction, which comprises a beam formed by an alternating stack of profile flat tubes selected for the circulation of the first fluid and disruptive for the circulation of the second fluid between the tubes; an inlet manifold box and an outlet manifold respectively connected to two ends of the bundle for the admission and evacuation of the first fluid, said manifolds being each formed by a stack of end plates having a bottom provided with a peripheral rim, in particular with a substantially U-shaped contour, so that the end plates can be assembled in pairs in a sealed manner by cooperation of their respective peripheral rims, each time delimiting a chamber having an inlet profile, homologous to the profile of a tube for inserting a tube end, the bottom of each collector plate having an opening for the communication of the chambers; and a casing enveloping the beam, this casing being provided an inlet and an outlet for the circulation of the first fluid, and an inlet and an outlet for the circulation of the second fluid.
Ainsi, l'échangeur de chaleur de l'invention comprend un faisceau formé par un empilement alterné de tubes et de perturbateurs pour définir respectivement les lames de circulation du premier fluide et du second fluide.Thus, the heat exchanger of the invention comprises a beam formed by an alternating stack of tubes and disrupters for defining respectively the circulation blades of the first fluid and the second fluid.
Les boîtes collectrices d'entrée et de sortie sont définies chacune par un empilement de plaques d'extrémité, formant des têtes de lames, qui sont emboîtées entre elles grâce à la géométrie de leurs rebords périphériques respectifs, ce qui permet de définir à chaque fois une chambre en communication avec un tube. Chaque chambre délimite une fente d'introduction pour le tube qui présente un profil interne homologue du profil d'un tube, ce qui permet un emboîtement étanche de l'extrémité de tube dans la fente d'introduction correspondante. Les chambres communiquent entre elles, ce qui permet de définir une boîte collectrice d'entrée ou de sortie pour le premier fluide.The inlet and outlet manifolds are each defined by a stack of end plates, forming blade heads, which are interlocked with each other by virtue of the geometry of their respective peripheral rims, which makes it possible to define each time a chamber in communication with a tube. Each chamber defines an introduction slot for the tube which has an internal profile homologous to the profile of a tube, which allows a sealed engagement of the end of the tube in the corresponding insertion slot. The chambers communicate with one another, which makes it possible to define an inlet or outlet manifold for the first fluid.
Le boîtier qui enveloppe le faisceau permet d'assurer la circulation du second fluide qui est en échange thermique avec le premier fluide.The casing which envelops the beam makes it possible to ensure the circulation of the second fluid which is in heat exchange with the first fluid.
Un tel échangeur de chaleur peut être réalisé par une technologie brasée en une seule opération, une fois les différents composants de l'échangeur de chaleur maintenus serrés entre eux.Such a heat exchanger can be made by a brazed technology in a single operation, once the various components of the heat exchanger held tight together.
Les rebords périphériques des plaques d'extrémité sont conformés de façon à ce que les chambres définies par l'empilement desdites plaques présentent, par exemple, une hauteur sensiblement identique à celle des tubes. Par hauteur on entend la direction d'empilement desdites plaques.The peripheral edges of the end plates are shaped so that the chambers defined by the stack of said plates have, for example, a height substantially identical to that of the tubes. By height is meant the stacking direction of said plates.
Comme indiqué précédemment, un tel échangeur de chaleur trouve une application particulière dans le domaine des véhicules automobiles, par exemple pour réaliser un condenseur de climatisation.As indicated above, such a heat exchanger finds particular application in the field of motor vehicles, for example to achieve an air conditioning condenser.
Dans la description qui suit, faite seulement à titre d'exemple, on se réfère aux dessins annexés, sur desquels :
- la
figure 1 est une vue en perspective d'un échangeur de chaleur selon l'invention ; - la
figure 2 est une vue en perspective éclatée de l'échangeur de chaleur de lafigure 1 ; - la
figure 3 est une vue de dessus de l'échangeur de chaleur desfigures 1 et 2 ; - la
figure 4 est une vue en coupe suivant la ligne IV-IV de lafigure 3 ; - la
figure 5 est une vue en coupe suivant la ligne V-V de lafigure 3 ; - la
figure 6 représente le détail VI de lafigure 5 à échelle agrandie ; - la
figure 7 est une vue en coupe suivant la ligne VII-VII de lafigure 3 ; - la
figure 8 est une vue d'extrémité d'un tube ; - la
figure 9 représente le détail IX de lafigure 8 , à échelle agrandie ; - les
figures 10 et 11 montrent respectivement deux plaques d'extrémité ; - la
figure 12 est une vue de face de l'échangeur de chaleur de lafigure 1 ; et - la
figure 13 est une vue de côté de l'échangeur de chaleur de lafigure 1 .
- the
figure 1 is a perspective view of a heat exchanger according to the invention; - the
figure 2 is an exploded perspective view of the heat exchanger of thefigure 1 ; - the
figure 3 is a top view of the heat exchanger of theFigures 1 and 2 ; - the
figure 4 is a sectional view along line IV-IV of thefigure 3 ; - the
figure 5 is a sectional view along line VV of thefigure 3 ; - the
figure 6 represents detail VI of thefigure 5 on an enlarged scale; - the
figure 7 is a sectional view along line VII-VII of thefigure 3 ; - the
figure 8 is an end view of a tube; - the
figure 9 represents detail IX of thefigure 8 on an enlarged scale; - the
Figures 10 and 11 show respectively two end plates; - the
figure 12 is a front view of the heat exchanger of thefigure 1 ; and - the
figure 13 is a side view of the heat exchanger of thefigure 1 .
Les
L'échangeur de chaleur 10 comprend un faisceau 12 formé par un empilement alterné de tubes plats 14 de profil choisi pour la circulation d'un premier fluide F1 et de perturbateurs 16 pour la circulation d'un second fluide F2 entre les tubes. Les perturbateurs 16 sont ici des intercalaires ondulés dont les ondulations respectives viennent au contact des tubes 14.The
L'échangeur de chaleur 10 comprend en outre une boîte collectrice d'entrée 18 et une boîte collectrice de sortie 20 reliées respectivement à deux extrémités du faisceau 12 pour l'admission et l'évacuation du premier fluide F1. Ces deux boîtes collectrices sont formées de manière analogue, c'est-à-dire par un empilement de plaques d'extrémité 22 dont chacune présente un fond 24 muni d'un rebord périphérique 26 ayant un contour général sensiblement en forme de U.The
Dans l'exemple, le fond 24 de chaque plaque d'extrémité 22 est généralement plat et le rebord périphérique 26 forme un angle choisi avec le fond plat 24, en sorte que les plaques d'extrémité 22 peuvent être emboîtées et assemblées de manière étanche par coopération de leurs rebords périphériques respectifs. En effet, comme ces rebords périphériques 26 sont inclinés, lorsque deux plaques d'extrémité sont mutuellement emboîtées, elles ménagent entre elles une fente d'introduction dont le profil interne est homologue du profil d'un tube, ce qui permet d'insérer à chaque fois une extrémité de tube de manière étanche.In the example, the
On délimite ainsi à chaque fois une chambre 28 pour le premier fluide, comme on le voit notamment sur la
L'échangeur 10 comprend en outre un boîtier 32 qui enveloppe le faisceau. Ce boîtier 32 comprend un carter 34 à section en U pour loger le faisceau 12 et s'étendant jusqu'aux plaques d'extrémité 22 ainsi qu'un couvercle 36 pour fermer le carter. Le boîtier 32 porte une entrée 38 et une sortie 40 pour le premier fluide F1, ainsi qu'une entrée 42 et une sortie 44 pour le second fluide F2. L'entrée 38 et la sortie 40 pour le premier fluide F1 sont portées par le couvercle 36 et débouchent respectivement dans la boîte collectrice d'entrée 18 et la boîte collectrice de sortie 20.The
Dans l'exemple, l'entrée 38 et la sortie 40 sont formées par deux brides ayant des alésages respectifs 46 et 48 qui communiquent à chaque fois avec la boîte collectrice correspondante au travers d'une ouverture circulaire 50 ou 52 (
Dans l'exemple représenté, l'entrée 42 et la sortie 44 pour le second fluide F2 sont portées par le carter 34. Ce carter présente une paroi de fond 54 et deux parois latérales 56 et 58 qui viennent envelopper le faisceau. Dans l'exemple, l'entrée 42 et la sortie 44 sont formées par des tubulures qui sont portées par la paroi latérale 56 du carter 34. La paroi latérale 56 comprend une partie centrale plane 60 reliée à deux parties latérales 62 et 64 sur lesquelles sont montées respectivement les tubulures 42 et 44. La paroi latérale 58 présente une forme homologue. Il en résulte que le carter est plus large dans sa partie centrale que dans ses parties d'extrémité au voisinage des plaques collectrices.In the example shown, the
De la sorte, un volume libre 100 est défini entre le carter et le faisceau (
Le couvercle 36 présente deux bords relevés respectifs 66 et 68 (
Plus précisément, selon le mode de réalisation illustré, en se reportant à nouveau à la
Les différents composants de l'échangeur de chaleur, tels que mentionnés ci-dessus, sont avantageusement réalisés en aluminium ou alliage à base d'aluminium et munis d'un placage de brasure, aux endroits appropriés, ce qui permet de réaliser un assemblage de ces composants entre eux en une seule opération dans un four de brasage, tout en assurant une étanchéité entre les différents composants.The various components of the heat exchanger, as mentioned above, are advantageously made of aluminum or aluminum-based alloy and provided with solder plating, at the appropriate places, which makes it possible to assemble an assembly of these components together in a single operation in a brazing furnace, while ensuring a seal between the various components.
Comme on le voit plus particulièrement sur la coupe de la
Chaque tube 14 est un tube plat délimité par deux grandes faces opposées 74 et 76 et deux petites faces inclinées opposées 78 et 80 qui forment chacune avec les faces 74 et 76 un angle correspondant sensiblement à l'angle A précité (
Ainsi, le profil du tube a sensiblement la forme d'un trapèze allongé qui vient épouser la forme de la fente d'introduction délimitée entre deux plaques d'extrémité 22 adjacentes. Les faces 78 et 80 se raccordent aux faces 74 et 76 par des arrondis. Dans l'exemple, chaque tube 14 est réalisé par extrusion et comprend une multiplicité de canaux internes 82 (
Comme on peut le voir sur les
La plaque d'extrémité 22a de la
Comme on peut le voir aussi sur la
Les ergots 84, 86, 88 et 90 précités sont assurés par une découpe fine, non débouchante, et ils permettent aussi le guidage du fluide entre les plaques d'extrémité comme on le voit sur la
Par ailleurs, l'utilisation de découpes fines pour faire l'espacement entre les plaques d'extrémités permet d'utiliser une hauteur de perturbateur plus étroite que deux fois l'épaisseur de la tôle des plaques d'extrémité, ce qui est plus avantageux que l'utilisation d'agrafes ou d'embouts pour fermer les tubes.Furthermore, the use of thin cuts to make the spacing between the end plates makes it possible to use a disrupter height narrower than twice the thickness of the plate of the end plates, which is more advantageous. that the use of staples or end caps to close the tubes.
Dans le mode de réalisation illustré, le carter 34 est brasé au faisceau et épouse sensiblement sa forme, ce qui permet d'optimiser l'encombrement de l'échangeur. Dans un autre mode de réalisation, non illustré, il pourra s'agir d'une boîte, fermée par un couvercle, par exemple serti sur la boîte, l'étanchéité entre la boite et le couvercle étant assurée, notamment, par un joint. Dans un tel mode, le couvercle pourra être constitué d'une plaque terminale du faisceau telle que, par exemple, la plaque 36, prévue prolongé radialement sur l'ensemble de sa périphérie afin de définir une zone de fixation, notamment de sertissage, à la boîte. Les tubulures pour le second fluide pourront être prévues sur la boîte, notamment en étant issues de matière. Un tel exemple de boîte est décrit, par exemple, dans la demande de brevet
Dans l'exemple représenté, l'échangeur de chaleur peut constituer un condenseur de climatisation de véhicules automobiles. Le fluide F1 est alors constitué par un fluide frigorigène et le fluide F2 par un fluide de refroidissement. Le fluide frigorigène peut être un fluide fluoré à changement de phase, ou bien un fluide fonctionnant en mode supercritique, comme par exemple le CO2. Quant au fluide de refroidissement, il peut s'agir d'eau additionnée d'un antigel. L'échangeur de chaleur représenté sur les figures est particulièrement adapté à l'utilisation comme condenseur fonctionnant avec un fluide frigorigène du type CO2. En effet, cet échangeur de chaleur peut résister à des pressions de fonctionnement élevées telles que l'on rencontre avec un fluide du type CO2.In the example shown, the heat exchanger can constitute an air conditioning condenser of motor vehicles. The fluid F 1 is then constituted by a refrigerant and the fluid F 2 by a cooling fluid. The refrigerant may be a phase-change fluorinated fluid, or a fluid operating in supercritical mode, such as for example CO 2 . As for the cooling fluid, it may be water added with antifreeze. The heat exchanger shown in the figures is particularly suitable for use as a condenser operating with a refrigerant CO 2 type. Indeed, this heat exchanger can withstand high operating pressures as encountered with a CO 2 type fluid.
Cependant, cet échangeur de chaleur pourrait être utilisé pour d'autres applications.However, this heat exchanger could be used for other applications.
Claims (15)
- Heat exchanger comprising an alternating stack of blades for the circulation of a first fluid (F1) and of a second fluid (F2), comprising a bundle (12) formed by an alternating stack of flat tubes (14) of a profile chosen for the circulation of the first fluid (F1) and devices (16) for disrupting the circulation of the second fluid (F2) between the tubes; an inlet collecting box (18) and an outlet collecting box (20) that are, respectively, connected to two ends of the bundle for the intake and the discharge of the first fluid (F1); and a casing (32) surrounding the bundle, this casing being provided with an inlet (38) and with an outlet (40) for the circulation of the first fluid (F1) and with an inlet (42) and with an outlet (44) for the circulation of the second fluid (F2), the exchanger being characterized in that said collecting boxes (18, 20) are each formed by a stack of end plates (22) having a bottom provided with a peripheral rim (26) such that the end plates (22) can be assembled in pairs in a leaktight manner by interaction of their respective peripheral rims (26) whilst each time defining a chamber (28) having an inlet profile homologous with the profile of a tube for the insertion of a tube end, the bottom (24) of each endplate (22) having an opening for chamber communication.
- Heat exchanger according to Claim 1, characterized in that the bottom (24) of each endplate (22) is generally flat and in that the peripheral rim (26) forms a given angle (A) with the bottom (24) such that the inlet profile of the chamber (38) defined between two adjacent endplates (22) has substantially the form of an elongate trapezium having two opposite major sides connected to two inclined opposite minor sides.
- Heat exchanger according to one of Claims 1 and 2, characterized in that the bottom (24) of each endplate (22) is limited by an end edge (92) continued, respectively, by two free ends (94) of the peripheral rim (26) in order to contribute to defining the inlet profile.
- Heat exchanger according to one of Claims 1 to 3, characterized in that the bottom (24) of each endplate (22) is surmounted by at least one stud (84, 86, 88, 90) projecting from the side of the peripheral rim (26) in order to serve as a stop for an adjacent endplate (22).
- Heat exchanger according to Claim 4, characterized in that each projecting stud (84, 86, 88, 90) serves as deflector for channelling the first fluid (F1).
- Heat exchanger according to one of Claims 1 to 5, characterized in that each endplate (22) is produced by means of drawing.
- Heat exchanger according to one of Claims 1 to 6, characterized in that each tube (14) is defined by two opposite major faces (74, 76) and two inclined opposite minor faces (78, 80) such that the profile of the tube has substantially the form of an elongate trapezium.
- Heat exchanger according to one of Claims 1 to 7, characterized in that each tube (14) is produced by means of extrusion and comprises multiple internal channels (82).
- Heat exchanger according to one of Claims 1 to 8, characterized in that the disrupting devices (16) are corrugated inserts.
- Heat exchanger according to one of Claims 1 to 9, characterized in that the casing (32) comprises a housing (34) of U section for accommodating the bundle (12) and extending as far as the endplates (22), and also a cover (36) for closing the housing (34).
- Heat exchanger according to Claim 10, characterized in that the inlet (38) and the outlet (40) for the first fluid (F1) are carried by the cover (36) and open out, respectively, in the inlet collecting box (18) and the outlet collecting box (20).
- Heat exchanger according to one of Claims 10 and 11, characterized in that the inlet (42) and the outlet (44) for the second fluid (F2) are carried by the housing (34).
- Heat exchanger according to Claim 12, characterized in that the inlet (42) and the outlet (44) for the second fluid (F2) are carried by one and the same lateral wall (56) of the housing (34).
- Heat exchanger according to one of Claims 1 to 13, characterized in that the tubes (14), the disrupting devices (16), the endplates (22) and the casing (32) are produced from an aluminium-based material and assembled together by means of brazing.
- Heat exchanger according to one of Claims 1 to 14, produced in the form of an air-conditioning condenser, characterized in that the tubes are designed to be traversed by a refrigerating fluid, which is the first fluid (F1), and the casing () is designed to be traversed by a cooling fluid which is the second fluid (F2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10710341T PL2411754T3 (en) | 2009-03-26 | 2010-03-25 | Heat exchanger, especially condenser for air conditioning |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0901418A FR2943776B1 (en) | 2009-03-26 | 2009-03-26 | HEAT EXCHANGER, ESPECIALLY AIR CONDITIONING CAPACITOR |
PCT/EP2010/053948 WO2010108992A1 (en) | 2009-03-26 | 2010-03-25 | Heat exchanger, particularly an air-conditioning condenser |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2411754A1 EP2411754A1 (en) | 2012-02-01 |
EP2411754B1 true EP2411754B1 (en) | 2017-06-14 |
Family
ID=41172402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10710341.8A Active EP2411754B1 (en) | 2009-03-26 | 2010-03-25 | Heat exchanger, especially condenser for air conditioning |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2411754B1 (en) |
FR (1) | FR2943776B1 (en) |
PL (1) | PL2411754T3 (en) |
WO (1) | WO2010108992A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20240142183A1 (en) * | 2022-10-28 | 2024-05-02 | Valeo Systemes Thermiques | Tank and tube assembly for a heat exchanger |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2977306B1 (en) * | 2011-06-30 | 2017-12-15 | Valeo Systemes Thermiques | HEAT EXCHANGER, IN PARTICULAR FOR MOTOR VEHICLE |
DE102012224353A1 (en) * | 2012-12-21 | 2014-06-26 | Behr Gmbh & Co. Kg | Heat exchanger |
US9709342B2 (en) | 2013-02-13 | 2017-07-18 | Modine Manufacturing Company | Heat exchanger arrangement in a housing |
DE102013002478A1 (en) * | 2013-02-13 | 2014-08-14 | Modine Manufacturing Company | Heat exchanger assembly for use in housing, particularly in suction pipe of internal combustion engine, has connection block extending fluid passages and is arranged on end plate |
FR3045802B1 (en) * | 2015-12-21 | 2017-12-29 | Valeo Systemes Thermiques | THERMAL EXCHANGER, IN PARTICULAR FOR MOTOR VEHICLE |
FR3047063B1 (en) * | 2016-01-22 | 2018-11-30 | Sermeta | THERMAL EXCHANGING DEVICE FOR CONDENSED HEAT EXCHANGER |
CN107367190B (en) * | 2017-08-31 | 2023-07-04 | 珠海格力电器股份有限公司 | Diversity fluid joint integrated component, fan coil heat exchanger and air conditioning system |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19902504B4 (en) | 1999-01-22 | 2005-09-22 | Behr Gmbh & Co. Kg | Heat exchanger, in particular intercooler |
DE10045175A1 (en) | 1999-09-16 | 2001-05-17 | Denso Corp | Heat exchanger has two sets of pipes with connecting faces welded together except around indentation area formed on first connecting face of first pipe |
DE10112697A1 (en) * | 2001-03-16 | 2002-09-19 | Behr Gmbh & Co | Heat transfer radiator has adjacent segments with connection regions for insertion into each other |
FR2852383B1 (en) * | 2003-03-11 | 2017-05-05 | Valeo Thermique Moteur Sa | HIGH PRESSURE HEAT EXCHANGER COLLECTOR BOX AND HEAT EXCHANGER HAVING THIS COLLECTOR BOX |
DE10349150A1 (en) * | 2003-10-17 | 2005-05-19 | Behr Gmbh & Co. Kg | Heat exchanger, in particular for motor vehicles |
EP1870658A1 (en) * | 2006-06-20 | 2007-12-26 | Delphi Technologies, Inc. | A heat exchanger and a method of manufacturing thereof |
FR2906357B1 (en) * | 2006-09-21 | 2013-01-18 | Valeo Systemes Thermiques | LIQUID / GAS TYPE HEAT EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE AIR CONDITIONING EQUIPMENT USING A SUPERCRITICAL OPERATING REFRIGERANT FLUID SUCH AS CO2 |
FR2912811B1 (en) * | 2007-02-16 | 2013-02-08 | Valeo Systemes Thermiques | HEAT EXCHANGER FOR U-CIRCULATING FLUIDS |
-
2009
- 2009-03-26 FR FR0901418A patent/FR2943776B1/en not_active Expired - Fee Related
-
2010
- 2010-03-25 EP EP10710341.8A patent/EP2411754B1/en active Active
- 2010-03-25 PL PL10710341T patent/PL2411754T3/en unknown
- 2010-03-25 WO PCT/EP2010/053948 patent/WO2010108992A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20240142183A1 (en) * | 2022-10-28 | 2024-05-02 | Valeo Systemes Thermiques | Tank and tube assembly for a heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
EP2411754A1 (en) | 2012-02-01 |
FR2943776A1 (en) | 2010-10-01 |
FR2943776B1 (en) | 2012-08-17 |
PL2411754T3 (en) | 2018-01-31 |
WO2010108992A1 (en) | 2010-09-30 |
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