EP2513586B1 - Wärmetauscher - Google Patents

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Publication number
EP2513586B1
EP2513586B1 EP10787108.9A EP10787108A EP2513586B1 EP 2513586 B1 EP2513586 B1 EP 2513586B1 EP 10787108 A EP10787108 A EP 10787108A EP 2513586 B1 EP2513586 B1 EP 2513586B1
Authority
EP
European Patent Office
Prior art keywords
exchanger
flange
housing
tubes
collector
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.)
Active
Application number
EP10787108.9A
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English (en)
French (fr)
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EP2513586A1 (de
Inventor
Paul Garret
Eric Piniarski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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Publication date
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Priority to PL10787108T priority Critical patent/PL2513586T3/pl
Publication of EP2513586A1 publication Critical patent/EP2513586A1/de
Application granted granted Critical
Publication of EP2513586B1 publication Critical patent/EP2513586B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F28D7/163—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • 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
    • 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
    • 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
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • the invention relates to a heat exchanger.
  • a heat exchanger for example used in the automotive industry and more specifically in an internal combustion engine of a motor vehicle, comprises heat exchange elements and fluid flow in which heat exchanging fluids circulate. between them.
  • the heat exchange elements may for example comprise tubes, plates, fins, flow disruptors, etc.
  • the exchanger may comprise a bundle of tubes arranged parallel to each other on one or more parallel rows with one another, these tubes being arranged to carry a first fluid, while a second fluid flows between the tubes and exchange of heat with the first fluid.
  • Many fluid associations can be envisaged, be they liquids and / or gases.
  • the exchanger comprises a housing for receiving the tubes, which comprises a plurality of walls forming the volume in which the tubes are received. It is generally open at both ends, so that the tubes can be connected to collection or fluid distribution boxes also called manifolds: an inlet manifold and an outlet manifold.
  • the first fluid flows into the tubes from the inlet header to the outlet manifold.
  • the second fluid flows around the tubes, from an inlet pipe to an outlet pipe, and exchanges heat with the first fluid.
  • the exchanger also generally comprises two tube holding plates, the fluid collecting boxes being mounted on the collector plates.
  • the tubes pass through orifices in the collector plates and open into the fluid collecting boxes.
  • each collector plate comprises means for crimping an edge of the collector box with which it is associated.
  • Such a mode of fixation of the box is known for example from the document WO 2008/125309 or the document EP 2,031,338 in which the collector plate is in two parts assembled mechanically.
  • collector plates with elongated orifices separated by walls of small width, said width corresponding to the distance between the successive tubes.
  • the walls separating the orifices have a very large slenderness, that is to say that they are very elongated in one direction but thin in the other two. This raises the question of how they are made.
  • punching processes known as "with fine cutting” are known, making it possible, from a relatively thick plate, to produce inter-orifices walls thinner than the thickness of the plate; for example, one can form orifices 60mm long in a 4mm thick plate with inter-orifices walls of width approximately equal to 2.6mm.
  • the invention arose from the resolution of a particularly sensitive problem in the case of a collector plate with orifices of great slenderness; the invention is however not limited to this single application, the invention also providing advantages in its application to collector plates with slender orifices more reasonable.
  • the invention relates to a heat exchanger comprising fluid exchange and flow elements, at least one fluid collection box into which the exchange elements and a housing housing of the elements of the exchange, characterized in that it comprises a flange for fixing the header to the housing, the flange having a groove (G1) for fixing the housing (4) and a groove (G2) for fixing the manifold (11 ), the grooves (G1, G2) having a common wall (19).
  • the grooves can receive or accommodate the walls of the housing and the collector box.
  • the use of such a fastening flange provided with two grooves with a common wall provides a great compactness to the exchanger. Indeed, the manifold and the casing are compactly attached to each other without being directly fixed to one another, which guarantees the robustness of the assembly and allows in particular a good transmission of constraints.
  • the grooves are opposite, that is, they are oriented in opposite directions. More specifically, the exchanger extending generally along an axis which is preferably the overall flow axis of the fluids within it, each groove has a bottom wall substantially transverse to said direction and a transverse peripheral opening, the openings being turned in two opposite directions on the said direction.
  • the exchanger of the invention comprises at least one collecting plate for holding the exchange elements, the fixing flange and the collector plate being separate parts fixed to the casing independently of one another.
  • two separate parts fulfill these functions, these parts being fixed to the casing independently of one another, that is to say without transmission. direct effort between them.
  • a collector plate of small thickness typically 0.8 mm
  • orifices of great slenderness it is thus possible to form tubes of slender section and therefore a flattened and compact heat exchanger.
  • the function of holding the manifold is provided by the flange, independently. We thus obtain a heat exchanger all the more compact.
  • the fastening flange and / or the collector plate is fixed directly to the casing.
  • the exchanger thus gains even more compactness.
  • the fastening flange and the collector plate are non-contacting with each other.
  • the exchange elements comprising tubes in which flows a first fluid (for example a gas) in communication with the box and around which flows a second fluid (for example a liquid), the header plate performs a sealing function between the first fluid and the second fluid and the flange performs a sealing function to the first fluid with the outside of the exchanger.
  • a first fluid for example a gas
  • a second fluid for example a liquid
  • the manifold and the flange are crimped to each other.
  • the flange is brazed to the housing. Such a method of attachment is robust and inexpensive.
  • the casing comprises at least one positioning tab arranged to be housed in an orifice of the flange for holding the latter on the casing during soldering.
  • the orifice is formed in the bottom of the crankcase fixing groove.
  • the positioning tab is arranged to be crimped against the fixing wall for its retention in the orifice.
  • the positioning tab is arranged to be deformable for its maintenance in the orifice.
  • the header plate is brazed to the housing.
  • the header plate has a skirt with a surface along which it is brazed to the housing.
  • the contact surface is important which ensures good brazing of parts.
  • the pipes have a section of generally rectangular shape, preferably whose length to width ratio is greater than 5.
  • the invention is particularly applicable to an air-water heat exchanger for example a water cooler recirculated exhaust gas or a charge air cooler of a combustion engine internal combustion of a motor vehicle.
  • a heat exchanger 1 according to a first embodiment comprises elements 2, 2 ', 3 of heat exchange, a casing 4 for receiving or housing these elements 2, 2', 3, a manifold 11 of air inlet and a manifold 11 'of air outlet.
  • the housing 4 has orifices 6, 7 for connection to water flow lines 8, 9, in this case an inlet pipe 9 and an outlet pipe 8, connected to a water circuit in which the exchanger 1 is mounted.
  • the different elements of the exchanger 1 are brazed to each other, except the boxes 11, 11 'which are crimped; such exchangers with their brazed or crimped elements are well known to those skilled in the art with respect to their general characteristics.
  • the exchanger 1 described is an exchanger called “air-water”, that is to say an exchanger in which the fluids that exchange heat are air and water.
  • This is for example a water cooler exhaust gas called “recirculated” an internal combustion engine of a motor vehicle or a charge air cooler of such an engine; the water is preferably water from the so-called “low temperature” cooling circuit of said engine; it is typically brine.
  • the exchanger 1 is generally of parallelepiped shape.
  • L of the length of the exchanger 1 which is its largest dimension, and in the direction in which the fluids flow, the direction 1 of the width of the exchanger 1 and the direction h of its height (or thickness).
  • L, 1 or h respectively denote indifferently the length, the width and the height of the exchanger 1 or the direction of the length, the direction of the width and the direction of the height of the exchanger 1.
  • a Cartesian coordinate system (L, 1, h) is formed on the basis of these mutually perpendicular directions.
  • the notions of external (or external) and internal (or internal) used in the description refer to relative positions of elements relative to the outside or inside of the exchanger 1.
  • the exchange elements comprise airflow tubes 2 of flattened shape. Their large size (which is the overall direction of the flow of air within them) is parallel to the direction of the length L of the exchanger 1 and their section transversely to this length L is rectangular in shape; the rectangle whose section of each tube 2 has the shape has a dimension parallel to the width 1 of the exchanger 1 and a dimension parallel to the height h of the exchanger 1.
  • Each tube 2 has a length substantially equal to the length L of the exchanger 1 and a width substantially equal to the width 1 of the exchanger 1; its dimension parallel to the height h of the exchanger 1 (it is its thickness) is less than the height of the exchanger 1 and in this case relatively small, which gives the tubes 2 their flattened shape.
  • the thickness of the tubes 2 can be equal to about 7 or 8 mm for each tube 2, the width 1 of the tubes 2 being equal to about 100 mm.
  • the inter-tube spaces may for example be of dimension (parallel to the height h of the exchanger 1) less than 3 mm, for example substantially equal to 2mm.
  • the exchanger 1 is compact.
  • the tubes 2 are assembled parallel to each other, the set of tubes 2 forming a stack in the direction of the height h of the exchanger 1; we also speak of bundle of tubes; the dimension of the entire beam parallel to the height h of the exchanger 1 is substantially equal to the height h of the exchanger 1.
  • the tubes 2 are assembled to each other, parallel to each other, and allow the air circulation within them, generally in the direction of the length L of the exchanger.
  • fins 2 ' disturbance of the air flow to facilitate heat exchange between air and water through the walls of the tubes 2.
  • These fins 2' are well known to the air a person skilled in the art and it is not necessary to describe them in detail; they are here of corrugated shape and their section has, in end view along the axis of the length L of the exchanger 1, a serpentine shape between the walls of each tube 2.
  • disrupters In the water flow channels 3 formed between the tubes 2 are mounted disrupters (not shown) of the water flow, this flow preferably being carried out countercurrently, that is to say in the opposite direction of the direction of flow of the air.
  • the disrupters are in the form of plates which extend substantially over the entire lateral surface of the tubes 2 (referred to as the lateral surface of the surface of the tubes 2 defined by the dimensions parallel to the length L and to the width 1 of the exchanger 1) and throughout the space between successive tubes 2 to which they are brazed; disrupters are also provided between the end tubes 2 and the casing walls 4.
  • the disrupters have a shape creating turbulence in the flow of water passing through them to promote heat exchange, in a known manner.
  • the exchanger 1 comprises, at each of its ends (in the dimension of its length L), an air manifold 11, 11 '.
  • the ends of air circulation tubes 2 are connected to the air collecting boxes 11, 11 ', the internal volume of the tubes 2 thus being in fluid communication with the interior volume of the manifolds 11, 11'; in other words, the tubes 2 open into the manifolds 11, 11 '.
  • the manifolds 11, 11 ' are connected to pipes of an air circuit in which the exchanger 1 is mounted. The air is introduced into the tubes 2 via the inlet manifold. 11 and is collected at the outlet of the tubes 2 by the air outlet manifold 11 '.
  • the structure of the exchanger will be described in more detail at its connection with the input box 11. The description that is made also applies to the exchanger at its output box 11 '.
  • the input boxes 11 and output 11 ' are in this case similar and mounted symmetrically; of course, according to another embodiment, they may be different.
  • the exchanger 1 comprises at its end a header plate 10, the function of which is to hold the tubes 2 in position, to guide the flow of air between the internal volume of the manifold 11 and the tubes 2 and to prevent the flow of water to the interior of the manifold 11, while preventing the flow of air and water to confluence; in other words, the header plate 10 seals between air and water.
  • the collector plate 10 is often referred to by those skilled in the art by the term collector 10 and will be designated as such thereafter.
  • the collector 10 is fixed to the casing 4, in this case by brazing, at a peripheral edge surface.
  • the collector 10 has a peripheral skirt 10a having a side surface along which the collector 10 is brazed to the housing 4; this allows a simpler positioning between these two parts before brazing but also a better maintenance of one to the other, since the contact surface (and therefore brazing) is greater than if the collector 10 was brazed along. of a slice.
  • the peripheral skirt 10a is formed by the edge of the collector 10 which is folded, in this case over its entire periphery.
  • the skirt 10a therefore extends perpendicularly to the overall plane of the plate forming the collector 10, thus parallel to the direction of the length L of the exchanger 1.
  • the skirt 10a can be folded in one direction (as on FIG. figure 3 ) or in the other (as on the figure 12 ), in other words outwardly or inwardly of the exchanger 1, respectively; the folding side depends in particular on the size and the distance between the collector 10 and the fastening flange 5 described below.
  • the collector 10 is in the form of a plate mounted transversely to the length L of the exchanger 1 to receive the ends of the tubes 2.
  • the collector 10 is pierced with a plurality of orifices 12, each orifice 12 being associated with a tube 2.
  • Each orifice 12 has a shape corresponding to the section of a tube 2 and is bordered by walls 13 or collars 13 or flanges 13 for retaining the end of the tubes 2 and for holding the latter in place. position; the collars also fulfill a function of stiffening the collector 10.
  • These collars 13 extend generally perpendicularly to the overall plane of the plate forming the collector 10, therefore parallel to the direction of the length L of the exchanger 1, the end 13 'projecting from these flanges 13 being directed towards the inside of the exchanger 1; thus, the collars 13 extend, from the collector 10, around the tubes 2, which they enclose the ends.
  • the ends of the tubes 2 are slid into these collars 13, forming a slide to grip them; each collar 13 forms a contact surface with the surface of the end of the tube 2 associated therewith, allowing them to be soldered to one another.
  • the tubes 2, thus soldered to the flanges 13 bordering the orifices 12 of the collector 10, are fixed in position.
  • the casing 4 comprises, in the embodiment shown, two walls 15, 16 being L-shaped.
  • each wall 15, 16 has a cross section (with respect to the direction of the length L of the exchanger 1). in the form of L.
  • Each wall 15, 16 is L-shaped by folding around an edge to form two flaps (15a, 15b), (16a, 16b) perpendicular to each other.
  • the interest of walls 15, 16 in L is their simplicity of manufacture and storage in view of the manufacture of exchangers (the storage can be done by simply nesting the walls on each other).
  • each wall 15, 16 here comprises a large flap 15a, 16a and a small flap 15b, 16b.
  • the large flap 15a, 16a is in the form of a rectangular plate of dimensions substantially equal to the length L of the exchanger 1 and its width 1
  • the small flap 15b, 16b is in the form of a plate rectangular dimension substantially equal to the length L of the exchanger 1 and its height h.
  • the concepts of large and small flaps are introduced here to allow a separate designation of each of the flaps (15a, 15b), (16a, 16b) of each wall 15, 16.
  • the inlet ducts 9 and water outlet 8 in the exchanger 1 are here connected to the same face of the exchanger 1, in this case the small flap 16b of the second wall 16.
  • each wall 15, 16 comprises, at the free end of its small flap 15b, 16b, a raised edge 15c, 16c, which is an edge 15c, 16c of attachment to the large flap 16a, 15a of the other wall 16, 15.
  • This raised edge 15c, 16c extends perpendicularly to the small flap 15b, 16b, from a folding edge by which it is connected thereto.
  • R crimping tabs are arranged to ensure the connection between the raised edges 15c, 16c and corresponding large flaps 16a, 15a. Brazing allows the joining of the surfaces in contact and held against each other.
  • the flaps (15a, 15b), (16a, 16b) of the L-shaped walls 15, 16 form the four lateral faces of the exchanger 1 (referred to as lateral faces with respect to the direction of its length L).
  • the collector 10 is fixed to the casing 4 by brazing. More specifically, the outer surface of its peripheral skirt 10a is brazed to the inner surface of the flaps (15a, 15b), (16a, 16b) of the walls 15, 16.
  • each wall 15, 16 comprises, close to each of the free corners of its large flap 15a, 16a, a sealing portion P.
  • Each sealing portion P is in the form of a portion protruding from the inner surface of the large flap 15a, 16a of the wall 15, 16, towards the tubes 2; this protruding portion P has the shape of a corner or a fin.
  • Such projecting portion P may either be stamped on the wall 15, 16 after its manufacture, or may be directly formed during the manufacture of the wall 15, 16. After soldering the surfaces in contact, the seal is thus ensured. at this sealing portion P.
  • the walls 15, 16 each comprise two enlargements E, respectively, in the direction of the height h of the exchanger 1, formed near each end of its large flap 15a, 16a.
  • These enlargements E are here formed by stamping the wall 15, 16. They are provided because the dimensions of the collector 10 are larger, in the direction of the height h of the exchanger 1, the size of the small flaps 15b, 16b walls 15, 16 in L; it is therefore enlargements E (or embossed E) housing the collector 10.
  • embossed E have an additional advantage: insofar as they house the collectors 10 in the direction of the height h of the exchanger 1, they form a stop in the dimension of the length L of the exchanger 1; thus, they form axial retention means (in this direction L) of the collectors 10 and therefore of all the exchange elements 2, 2 'during brazing of all the elements of the exchanger 1.
  • the exchanger 1 further comprises a flange 5 for fixing the manifold 11 to the casing 4.
  • This flange 5 is attached to the casing 4. It is fixed (in this case by brazing) to the end of the casing 4, along the periphery of the latter; it is therefore a peripheral flange 5, of generally rectangular shape, in this case formed of a single piece. It is fixed to the casing 4 independently of the collector 10 and is not fixed thereto; in other words, the exchanger 1 has no means for fixing the fastening flange 5 to the collector 10.
  • the flange 5 has a longitudinal wall 17 (in the longitudinal direction L) which extends along its entire periphery; this inner longitudinal wall 17 is arranged to extend on the inner side of the walls 15a, 15b, 16a, 16b of the casing 4 and be brazed to them.
  • the inner longitudinal wall 17 is folded outwards and in the direction of the exchanger 1, thus forming an inner transverse wall 18 and an intermediate longitudinal wall 19 forming with the inner longitudinal wall 17 a peripheral groove G1 for accommodating the walls 15a. , 15b, 16a, 16b of the casing 4, thereby filling a function of fixing the casing 4.
  • the inner transverse wall 18 forms a stop for the end of the walls 15a, 15b, 16a, 16b of the casing 4.
  • the intermediate longitudinal wall 19 is folded outwards and in the reverse direction of the fold forming the peripheral groove G1, thereby forming an outer transverse wall 20 and an outer longitudinal wall 21 forming with the intermediate longitudinal wall 19 a peripheral groove G2 housing a rim 11a of the end of the manifold 11, thereby filling a function of fixing the manifold 11; it is the end of the box 11 by which it is fixed to the flange 5; the rim 11a of the box 11 will be called fixing flange 11a.
  • the flange comprises two peripheral grooves G1, G2 formed by walls 17, 18, 19, 20, 21 of the fastening flange 5, these grooves G1, G2 having a common wall 19.
  • Each groove G1, G2 is provided for the maintenance of a part, in this case for the maintenance of the housing 4 and the manifold 11, respectively.
  • the casing 4 and the manifold 11 are each arranged so that their longitudinal end walls (in the longitudinal direction L of the exchanger 1) are inserted longitudinally in a peripheral groove G1, G2, by the transverse opening of this groove G1, G2.
  • the grooves G1, G2 are oriented in opposite directions, that is to say that their openings are turned in two opposite directions along the direction of the length L of the exchanger 1. Because of their conformation with a common wall 19, they offer the exchanger 1 a great compactness and a good quality of maintenance of the parts 4, 11, whether for brazing (for the housing 4) or for crimping (for the manifold 11 ).
  • the flange 5 has tabs 22 crimping the box 11 to the flange 5. These lugs 22 are arranged to be bent (folded) on the fixing flange 11a. The crimping tabs 22 are shown folded (that is to say in crimping position) on all of the figures. The box 11 is then crimped to the fastening flange 5.
  • the exchanger 1 is in this case arranged so that the collector 10 is fixed to the housing 4 at a distance d from the flange 5 and more precisely from the free end 17a of its inner longitudinal wall 17.
  • Maintaining the tubes 2 is provided by the manifold 10 and the maintenance of the manifold 11 is ensured (by crimping) by the flange 5 itself brazed to the casing 4, the manifold 10 and the flange 5 being both brazed to the casing 4 but independently of each other; in this case, they are even without contact with each other.
  • the forces to which the flange 5 is subjected because of its function of holding the manifold 11 are not transmitted directly to the manifold 11 which is connected to the casing 4 and to the tubes 2.
  • the latter can be formed so as to receive tubes 2 of slender section and separated from each other by a small distance.
  • the collector 11 it is possible to form the collector 11 by a traditional stamping process on a thin plate; in such a method, the collars 13 of the collector 11 are stamped then their bottom is punched to form the orifices, in a known manner.
  • the plate making it possible to form the collector 10 having a thickness of approximately 1 mm, it is possible to form a collector 10 with orifices 12 of 100 mm by 7 or 8 mm approximately, with a inter-tube space of 2 to 3 mm. .
  • the collars 13 may have a bulk (dimension parallel to the direction of the length L of the exchanger 1) substantially equal to 4mm; thus, by subtracting the thickness of the straps 14 (1mm), the collars 13 have a useful surface of contention of the end of the tubes 2 and brazing with them of about 3mm.
  • the collector 10 being brazed directly to the casing 4, the radius of its corners is relatively large and the collector 10 is simpler to manufacture, this which is interesting because, because of the thickness of the collector 10, it is not always easy to conform it correctly.
  • a further advantage is that, industrially, the implementation of the invention can be done with prior art collectors, thin but weak, by simply adding a fastening flange 5.
  • each tab 24 extends in the extension of the flap 15a, 15b, 16a, 16b which supports it; a flap 15a, 15b, 16a, 16b may comprise one or more lugs 24; all the flaps 15a, 15b, 16a, 16b or only a few may comprise one or more tabs 24.
  • the exchanger 1 comprises a positioning tab 24 located in the middle of the end of each small flap 15a , 16a of the casing 4 and two positioning tabs 24 located at the end of each large flap 15b, 16b of the casing 4.
  • the positioning tabs 24 are arranged to be folded or deformed to maintain the flange 5 in position relative to the casing 4 by crimping. Their deformation also serves to guarantee their perfect soldering to the inner surfaces of the orifices 23 in which they are inserted, in order to fill the mounting clearance with these surfaces and to avoid any air leakage at this level, in other words to guarantee the tightness 23.
  • the tabs 24 may be folded against the inner transverse wall 18, for example by bearing on the latter itself abutting on the end edge of the flaps 15a, 15b, 16a, 16b of the 4. They can also simply be deformed rather than crimped, insofar as a simple deformation would prevent them from moving relative to the flange 5.
  • These tabs 24 is to allow the positioning and maintenance of the flange 5 on the casing 4 during the manufacture of the exchanger 1 and in particular before and during the brazing of its various constituent elements.
  • the tubes 2 are stacked and inserted into the orifices of the collectors 10 and the walls 15, 16 L of the casing 4 attached around them and held in position relative to each other. the other thanks to the crimping tabs R; it may be noted here that other holding means such as clinching means could be provided.
  • the flanges 5 are attached to the ends of the casing 4, the positioning tabs 24 being inserted into the holes 23 provided for this purpose and deformed, folded or crimped to maintain the assembly. The whole can then be brazed and is for this purpose arranged in an oven, in a known manner.
  • the surfaces intended to be soldered to the casing 4 (and in particular the outer surfaces of the skirts 10a of the collectors 10 and the surfaces of the grooves G1) have substantial dimensions which allows quality brazing, the contact surfaces being important.
  • the corners of the flange 5 comprise a recessed portion 25 at the internal groove G1.
  • Such a recessed portion 25 is provided to facilitate the manufacture of the flange 5 and promote the quality of its brazing on the casing 4, ensuring a sufficient brazing surface including in the corners.
  • the flange 5 is in this case formed by stamping and it is difficult to bend the material in the corners, as is known.
  • the amount of material in the corners is less important which allows them to be stamped so as to form an inner longitudinal wall which has, including in the corners, a sufficient length for soldering the housing 4 of quality.
  • the shape of the housing and more particularly the shape of the corners of the ends of the housing 4 is adapted to the shape of the flange 5, as seen for example on the figure 5 (The ends of the housing 4 being intended to abut in the internal groove G1 of the flange 5).
  • the collecting box 11 comprises, at each corner, a bulge 26 corresponding to the recessed portion 25 of the flange 5.
  • This bulge 26 is housed in the recessed portion 25, providing a holding function in position sealing gasket 27; indeed, the seal 27 would not be contained in the corners because of the recessed portions 25 of the flange 5.
  • the shape of the skirt 10a of the manifold 10 is slightly different: it is seen that it is not folded towards the manifold 11 as was the case in the first embodiment but that it is folded back On the other hand, in the direction of the other end of the exchanger 1.
  • the collector 10 has an outer surface of a peripheral skirt at which it is brazed to the inner surface of the walls of the casing 4. in this case at a distance d from the free end 17a of the inner longitudinal wall 17 of the flange 5.
  • the operation of the exchanger 1 (whatever its embodiment) is as follows (it is described briefly because well known to those skilled in the art). Air is supplied at the level of the air inlet box 11, flows into the tubes 2 (this flow being disturbed by the fins 2 ') and leaves the exchanger 1 through the outlet box. 'air 11'. Furthermore, the exchanger is supplied with water through the water inlet pipe 9, circulates in the water flow channels 3 (this circulation being disturbed by the disturbers) and leaves the exchanger 1 by the pipe 8 of water outlet. The air and water flows are against the direction in the direction of the length L of the exchanger 1; we speak of heat exchanger "against the current"; the efficiency of such an exchanger 1 is very good.
  • the heat exchanger 1 has been described in relation to the air circulating in its tubes 2 and the water flowing between the tubes through the disrupters. It goes without saying that this could be reversed, that is to say water in the tubes and air between the tubes. Moreover, it could be air in both cases or water in both cases, or other fluids.

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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Claims (7)

  1. Wärmetauscher, umfassend Fluidtausch- und -strömungselemente (2, 2', 3), mindestens einen Fluidsammelkasten (11, 11'), in den die Tauschelemente (2, 2', 3) münden, ein Gehäuse (4) zur Aufnahme der Tauschelemente (2, 2', 3), eine Kollektorplatte (10) zum Halten der Tauschelemente (2, 2', 3") und einen Flansch (5) zur Befestigung des Sammelkastens (11, 11') am Gehäuse (4), dadurch gekennzeichnet, dass der Flansch eine Kehle (G1) zur Befestigung des Gehäuses (4) und eine Kehle (G2) zur Befestigung des Sammelkastens (11) umfasst, wobei die Kehlen (G1, G2) eine gemeinsame Wand (19) umfassen, wobei der Flansch (5) und die Kollektorplatte (10) separate Teile sind, die unabhängig voneinander am Gehäuse (4) befestigt sind.
  2. Wärmetauscher nach Anspruch 1, wobei der Flansch (5) und die Kollektorplatte (10) keinen Kontakt zueinander haben.
  3. Wärmetauscher nach einem der Ansprüche 1 bis 2, wobei der Flansch (5) und/oder die Kollektorplatte (10) direkt am Gehäuse (4) befestigt sind.
  4. Wärmetauscher nach einem der Ansprüche 1 bis 3, wobei der Sammelkasten (11, 11') und der Flansch (5) aneinander angequetscht sind.
  5. Wärmetauscher nach einem der Ansprüche 1 bis 4, wobei der Flansch (5) an das Gehäuse (4) angelötet ist und das Gehäuse (4) mindestens eine Positionierungslasche (24) umfasst, die so angeordnet ist, dass sie in einer Öffnung (23) des Flanschs (5) aufgenommen ist, um diesen bei ihrem Verlöten am Gehäuse (4) zu halten.
  6. Wärmetauscher nach Anspruch 5, wobei die Öffnung (23) im Grund der Kehle (G1) zur Befestigung des Gehäuses angeordnet ist.
  7. Wärmetauscher nach einem der Ansprüche 1 bis 6, wobei die Kollektorplatte (10) eine Schürze (10a) mit einer Oberfläche umfasst, entlang derer sie an das Gehäuse (4) angelötet ist.
EP10787108.9A 2009-12-18 2010-12-02 Wärmetauscher Active EP2513586B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10787108T PL2513586T3 (pl) 2009-12-18 2010-12-02 Wymiennik ciepła

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0906150A FR2954481B1 (fr) 2009-12-18 2009-12-18 Echangeur de chaleur
PCT/EP2010/068769 WO2011073038A1 (fr) 2009-12-18 2010-12-02 Echangeur de chaleur

Publications (2)

Publication Number Publication Date
EP2513586A1 EP2513586A1 (de) 2012-10-24
EP2513586B1 true EP2513586B1 (de) 2015-01-07

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US (1) US9488417B2 (de)
EP (1) EP2513586B1 (de)
JP (1) JP5856068B2 (de)
CN (1) CN102782435B (de)
FR (1) FR2954481B1 (de)
PL (1) PL2513586T3 (de)
WO (1) WO2011073038A1 (de)

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Also Published As

Publication number Publication date
US20130146267A1 (en) 2013-06-13
WO2011073038A1 (fr) 2011-06-23
EP2513586A1 (de) 2012-10-24
CN102782435A (zh) 2012-11-14
JP5856068B2 (ja) 2016-02-09
FR2954481A1 (fr) 2011-06-24
JP2013514514A (ja) 2013-04-25
US9488417B2 (en) 2016-11-08
FR2954481B1 (fr) 2012-02-03
PL2513586T3 (pl) 2015-05-29
CN102782435B (zh) 2014-12-10

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