EP0379701B1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0379701B1
EP0379701B1 EP89123336A EP89123336A EP0379701B1 EP 0379701 B1 EP0379701 B1 EP 0379701B1 EP 89123336 A EP89123336 A EP 89123336A EP 89123336 A EP89123336 A EP 89123336A EP 0379701 B1 EP0379701 B1 EP 0379701B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tube
exchanger according
flat tubes
manifolds
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.)
Expired - Lifetime
Application number
EP89123336A
Other languages
German (de)
English (en)
Other versions
EP0379701A1 (fr
Inventor
Dieter Dipl.-Ing. Bauer
Klaus Herrmann
Karl-Heinz Dipl.-Ing. Staffa
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0379701A1 publication Critical patent/EP0379701A1/fr
Application granted granted Critical
Publication of EP0379701B1 publication Critical patent/EP0379701B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • 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
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/906—Reinforcement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49389—Header or manifold making

Definitions

  • the invention relates to a heat exchanger, in particular a refrigerant condenser, of the type specified in the preamble of claim 1.
  • a heat exchanger is known from EP-A-0 255 313.
  • the ends of extruded flat tubes are guided into elongated slots in a tubular connection box and are soldered to the connection box.
  • the ends of the flat tubes must correspond exactly to the dimensions of the slots so that the tightness of the solder joint is achieved.
  • the corrugated fins are provided with a solder layer in order to be soldered to the flat tubes which have no solder.
  • US Pat. No. 3,689,972 describes a method by which, in a flat tube heat exchanger, after the tubes have been soldered into the terminal boxes, the terminal boxes are deformed to a desired cross-sectional shape. Since the soldering of flat tubes into corresponding slots in connection boxes is particularly problematic in the area of the parallel flat sides, it was proposed in EP-A-0 198 581 to provide the bottom of the connection boxes with bulges, which results in better soldering of the flat tubes the connection boxes should result.
  • a heat exchanger suitable for refrigeration circuits is described in DE-A-36 22 953.
  • This heat exchanger consists of flat tubes, the tube ends of which are widened compared to the central sections, the parallel sides of the ends of adjacent tubes lying against one another.
  • This heat exchanger has none Junction boxes, because the adjacent pipe ends of the parallel flat tubes are connected to each other and thus take over the function of the junction boxes.
  • a heat exchanger which consists of a plurality of tubes with an elongated oval cross section, the ends of which protrude into end plates.
  • the ends are formed into a circular cross-section and are located in corresponding flanges in the end plates, with the pipe ends and the flanges lying on one end in one plane.
  • the ends of the pipes are welded to the flanges using a special welding device.
  • a special welding device is required, with which the individual welded connections have to be made in succession.
  • the main advantages of the invention are seen in particular in the fact that a high level of manufacturing reliability is achieved, since tolerances in the section with radial pressure are completely eliminated, and connection boxes with uniform connecting pieces or openings can be used due to the cross sections of the pipe ends, which are independent of the dimension of the flat pipe .
  • Another advantage is that the flat tubes are extremely dimensionally stable and can also withstand extreme pressure loads both from the inside and from the outside, because the webs not only act as supports, but also as a tie rod between the parallel flat sides of the pipes.
  • the flat tubes are expediently designed as welded aluminum tubes, since on the one hand they meet the requirements with regard to their high strength and on the other hand with regard to the formability of the tube ends.
  • the round ends are integrally formed on the flat tubes without a transition area.
  • a short transition area between the flat tube and the round tube ends can also be provided, in particular for reasons of flow or production technology.
  • Both a tube with a flat cross-section, the ends of which have been formed into a circular or oval cross-section, can be assumed, but tubes with an originally round cross-section are also considered, which are compressed in the area between the ends to a flat tube cross-section with parallel side walls .
  • it is important that the support webs to be soldered are introduced into the tube before the deformation process of the tube or the tube ends, with oval expanded tube ends a subsequent insertion of the support webs is also possible.
  • connection boxes be surrounded by connection pieces which are directed into the connection boxes or towards the corrugated fins. In this way there is a larger one Contact surface between pipe and floor, which leads in particular to an increase in mechanical strength.
  • An expedient embodiment of the subject matter of the invention is that the ends of the flat tubes are located in openings in the connection boxes and the section with radial pressure is produced by radially widening the ends in the region of the base. This expansion can be done using a mandrel. If the ends of the flat tubes are inserted over connection pieces at the bottom of the connection box, it is expedient that the radial pressure between the tube end and the base is generated by radially pressing the tube ends together.
  • connection box can be designed as a one-piece tube.
  • the pipe forming the connection box can initially be open on its side diametrically opposite the pipe ends of the flat pipes, so that a tool for widening the pipe ends can be introduced into the ground.
  • the pipe forming the connection box is deformed in such a way that a closed pipe shape is formed, the seam of which is welded shut.
  • connection boxes consist of two concentrically nested tubes, the outer tube having openings diametrically opposite the openings for receiving the tube ends of the flat tubes, which are covered by the inner tube. These opposite openings serve that a tool for Generation of radial pressure can be introduced.
  • the inner tube is soldered to the outer tube, so that the openings opposite the tube sheet are closed in a liquid-tight or refrigerant-tight manner.
  • connection boxes each comprise a base part and a cover part, which are soldered to one another at the connecting surfaces.
  • a widening tool can first of all be introduced inexpensively into the pipe ends in order to generate the pressure, and then the cover part is placed on the base part.
  • the cover part and the base part are soldered simultaneously with the soldering of the corrugated fins to the flat tubes and the tube ends in the base of the connection box.
  • the cover parts and base parts preferably have overlapping and / or interlocking regions, as a result of which there is a large soldering area and thus a high mechanical strength.
  • means for flow deflection in the connection boxes.
  • These means for deflecting the flow can be formed, for example, by angled sections of the cover parts. With this design, the number of solder connections can be reduced to a minimum. If profile material is to be used for the cover parts, the means for deflecting the flow are between cover part sections inserted partitions formed.
  • the flat tubes can also consist of an extruded profile which has at least one support web between the parallel side walls over the entire, non-deformed length.
  • extruded profiles offer a particularly high strength, but the effort required to produce a round tube end from an extruded flat tube is greater than with the other tube types.
  • Fig. 1 the section through a heat exchanger 1 is shown, which comprises a plurality of parallel flat tubes 2 and corrugated fins 3 arranged between them.
  • the flat tubes 2 have ends 2 * with a round cross section, which are formed directly on the flat tubes 2 without a transition region and are fastened in corresponding openings 4 of connection boxes 5.
  • the connection boxes 5 are formed from a bottom part 6 and a cover part 7.
  • the upper connection box 5 comprises two cover parts 7 *, 7 **, which together cover the entire bottom part 6.
  • inwardly angled sections 8 of the cover parts 7 * and 7 ** form flow guiding means by which the distribution of the total fluid flow over a certain number of pipes connected in parallel is determined.
  • the flat tubes 2 there are support webs 14 which are soldered to the inner wall of the flat tubes 2 and in this way give the flat tubes great stability both under pressure from the inside and under pressure from the outside.
  • the upper cover part 7 * shown on the left in FIG. 1 has a fluid inlet 10 and the cover part 7 ** shown on the right has a fluid return 11.
  • the cover parts 7, 7 * and 7 ** are soldered to the respective base parts 6 along the circumferential edge, with a large soldering area overlapping areas 12 are provided.
  • the bottom parts 6 have connecting pieces 9 directed into the connection box, which surround the openings 4.
  • the tube ends 2 * are fastened in the base parts 6 in a liquid-tight or refrigerant-tight manner by radial expansion and additional soldering.
  • side parts 13 are soldered on.
  • Fig. 2 shows a section along the line II-II in Fig. 1. From this illustration it can be seen that the connecting piece 9 and also the ends 2 * of the flat tubes 2 have a circular cross section.
  • the cover parts 7 * and 7 ** are located within a peripheral edge 6 * of the base part 6, on the narrow sides of which the side parts 13 are fastened.
  • Fig. 3 is a section along the line III-III in Fig. 1 is shown. From this illustration, one can see the elongated cross section of the flat tubes 2 with the support webs 14 located therein.
  • the corrugated fins 3 are arranged between each two adjacent flat tubes 2 or between the respective outer flat tubes 2 and the side parts 13.
  • the corrugated fins 3 are soldered to the flat surfaces of the flat tubes 2 and the side parts 13.
  • FIG. 4 shows the section along the line IV-IV in FIG. 1.
  • This view shows the flat tube 2 in its long axis of the cross section with the round ends 2 * formed thereon.
  • the ends 2 * of the flat tubes 2 are located in the connecting piece 9 of the base parts 6, which together with the cover part 7 or 7 * form the lower or upper connection box 5.
  • the fluid inlet 10 is located on the upper connection box 5.
  • FIG. 5 shows a section of a longitudinal section through a heat exchanger 1, which has a different construction of the connection box 5 compared to the embodiment in FIG. 1.
  • the heat exchanger block is formed from parallel flat tubes 2 and corrugated fins 3 located between them, the ends 2 * of the flat tubes 2 being located in openings 16 in a base part 15.
  • the base part 15 is of flat shape and has angled side walls 15 * only on the two narrow sides.
  • the ends 2 * of the flat tubes 2 are initially held in the base part 15 by radial pressing as a result of radial expansion and later these joints are additionally soldered when the heat exchanger 1 is soldered. This will be discussed in more detail later in the description of FIG. 18.
  • the bottom part 15 forms, together with an arcuate profile piece 17, the connection box 5, which has an inserted partition wall 18 as a means for deflecting the flow. In this way it is very easy to divide the tube groups of the heat exchanger, since the partitions 18 are provided at any points and accordingly the partial lengths of the profile pieces 17 can be determined.
  • the side part 13 On the side of the heat Exchanger 1 is the side part 13 which engages with an angled end 13 * over the upper edge of the cover part 17.
  • Fig. 6 shows a section along the line VI-VI in Fig. 5. From this view it can be seen that the cover part 17 consists of an arcuate profile piece which is placed on the bottom part 15.
  • the bottom part 5 is provided along its long sides with an upwardly directed edge 15 **, through which an overlapping region 12 of the bottom part 15 and the cover part 17 results.
  • Fig. 7 shows an enlarged version of an embodiment of Fig. 6.
  • the cover part 17 is V-shaped (in this case upside down) and the upward edges 15 ** along the long side of the bottom part 15 arranged at an angle to the longitudinal axis of the base part 15, which is adapted to the V-shape of the cover part 17.
  • This design of base part 15 and cover part 17 results in a positive connection, which additionally creates an overlapping area 12 with a corresponding soldering surface.
  • connection box 5 shows a section through a connection box 5 with an end 2 ** of a flat tube 2 fastened therein.
  • the connection box 5 consists of two concentric pipes, an outer pipe 19 having openings 20 for receiving the pipe ends 2 * and diametrically opposite further openings 21.
  • the openings 21 are provided so that a tool for generating a radial pressure between the pipe end 2 * and the outer tube 19 is inserted.
  • an inner tube 22 is arranged concentrically in the outer tube 19 so that the openings 21 are covered.
  • the ends 2 * of the flat tubes 2 and the inner tube 22 are soldered to the outer tube 19, which results in a fluid-tight connection.
  • Fig. 9 shows an embodiment of the connection box 5 with a one-piece tube 23.
  • This tube 23 is initially open in the manufacture of the heat exchanger on its upper side, the gap in the lateral surface of the tube 23 being sufficient to provide a tool for generating the radial pressure between to insert the pipe end 2 * and a connecting piece 24 of the connection box 5.
  • the jacket parts of the tube 23 are deformed in such a way that they form a closed shape and finally the seam 25 is welded shut.
  • connection box 5 in which this consists of a one-piece tube 26 with outwardly directed connection piece 27.
  • An end 2 ** with a round cross-section of a flat tube 2 is inserted over the connecting piece 27 and is pressed against the connecting piece 27 by the force acting radially inwards.
  • connection boxes 5 show different variants of junction boxes 5, which essentially correspond to FIG. 6 with regard to the two-part design.
  • the variations relate to the cross-sectional shape of the connection boxes, each consisting of a base part 15 and a cover part 17 exist.
  • the bottom parts have outwardly directed connecting pieces 28 which surround the openings 4 for receiving pipe ends.
  • the designs according to FIGS. 12 and 13 have particularly large overlapping areas 12 between the base part 15 and the cover part 17.
  • the design of the connection boxes 5 in FIGS. 11 to 14 enables the use of deep-drawn parts, which is favorable in view of the manufacturing costs.
  • connection box 5 shows a connection box 5, in which a bottom part 29 has wall parts 30 directed upwards along the entire peripheral edge, the upper edge 31 of which engages in a groove-shaped depression 32 of a cover part 33.
  • This shape ensures high mechanical strength and a large soldering area.
  • the cover part 33 has a curvature 34.
  • connection box 5 with an end 2 * of a flat tube 2 fastened therein, in which a cover part, viewed in cross section, has the shape of a circular section which is larger than a semicircle.
  • this cover part 35 there is a base part 36, which is designed as a flat plate with outwardly directed connecting pieces and is soldered to the cover part 35 at its lateral edges.
  • Fig. 17 shows an embodiment variant of Fig. 8, the difference being that the connection box 5 consists of square tubes, namely an outer tube 37 and an inner tube 38, the outer tube 37, the openings 20 for receiving the pipe ends 2 * and the diametrically opposite openings 21 for carrying out a tool.
  • the connection box 5 consists of square tubes, namely an outer tube 37 and an inner tube 38, the outer tube 37, the openings 20 for receiving the pipe ends 2 * and the diametrically opposite openings 21 for carrying out a tool.
  • Fig. 18 shows an enlarged view of the connection arrangement of the bottom part 15 and the pipe end 2 * in Fig. 5.
  • the pipe end 2 * Before inserting the pipe end 2 * into the opening 16 in the bottom part 15, the pipe end 2 * has an outer dimension that is slightly less than that Opening 16. This allows the pipe end 2 * to be easily inserted into opening 16.
  • a tool 39 for example in the form of a mandrel, the pipe end 2 * is expanded radially, so that there is a secure contact in the opening 16 against the base part 15.
  • the tool 39 is preferably shaped in such a way that the area of the pipe end 2 * located within the connection box is given an oversize in relation to the opening 16 in the base part 15.
  • the parts forming the junction boxes 5 and the flat tubes are made of solder-plated material
  • the Flat tubes 2 are solder-plated on both sides because of the support webs 14 located therein. Even with the components that form the connection boxes 5, it is advisable to use solder-plated material on both sides in some design variants, in particular in the embodiments according to FIGS. 1 to 8, 12 and 15 to 18.
  • the pipe ends 2 * are included are shown in a circular cross section, an oval shape of the connecting piece or openings and pipe ends is of course also possible.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (19)

  1. Echangeur de chaleur, en particulier condenseur d'agent réfrigérant, comprenant de multiples tuyaux plats parallèles (2) et des ailettes ondulées (3) disposées entre les tuyaux plats (2), les extrémités (2*) des tuyaux plats (2) étant raccordées à des ouvertures correspondantes du fond (6, 15) de boîtes de raccord (5) en matériau comportant un plaquage de brasure et étant brasées aux boîtes de raccord, caractérisé en ce que les tuyaux plats (2) sont également en un matériau comportant des deux côtés un plaquage de brasure et des nervures d'appui (14) qui se trouvent dans les tuyaux plats (2) sont reliées à ceux-ci par la brasure qui les rend monobloc, en ce que les extrémités (2*, 2**) présentent une section ronde et en ce que les extrémités (2*, 2**) des tuyaux plats comportent dans la région du fond (6, 15) des boîtes de raccord (5) un tronçon sur lequel il existe un serrage radial entre les extrémités (2*, 2**) des tuyaux et le fond (6, 15).
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les tuyaux plats (2) sont des tuyaux soudés d'aluminium.
  3. Echangeur de chaleur selon l'une des revendications 1 ou 2, caractérisé en ce que les extrémités rondes (2*, 2**) sont formées sans transition avec la partie plate des tuyaux (2).
  4. Echangeur de chaleur selon l'une des revendications 1 ou 2, caractérisé en ce qu'il existe une courte région de transition entre le tuyau plat (2) et l'extrémité ronde (2*).
  5. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les ouvertures (4) des boîtes de raccord (5) sont entourées de tubulures de raccord (9, 24 27, 28) qui pénètrent dans les boîtes de raccord (5) ou sont orientées vers les ailettes ondulées (3).
  6. Echangeur de chaleur selon la revendication 1 ou 5, caractérisé en ce que les extrémités (2*) des tuyaux plats (2) se trouvent dans les ouvertures (4, 16) des boîtes de raccord (5) et le tronçon dans lequel il existe un serrage radial au niveau du fond est produit par élargissement radial de extrémités (2*).
  7. Echangeur de chaleur selon la revendication 5, caractérisé en ce que les tubulures de raccord (27) sont enfilées dans les extrémités (2**) des tuyaux plats et le serrage radial entre extrémité de tuyau et fond est produit par compression radiale des extrémités des tuyaux.
  8. Echangeur de chaleur selon l'une des revendications précédentes, caractérisé en ce que les boîtes de raccord (5) sont en aluminium comportant des deux côtés un plaquage de brasure.
  9. Echangeur de chaleur selon l'une des revendications précédentes, caractérisé en ce que les boîtes de raccord sont conformes en un tube en une pièce (23, 26).
  10. Echangeur de chaleur selon l'une des revendications 9, caractérisé en ce que le tube (23) comporte un joint de soudure (25) du côté diamétralement opposé à l'extrémité (2*) des tuyaux.
  11. Echangeur de chaleur selon l'une des revendications 6 à 7, caractérisé en ce que les boîtes de raccord (5) consistent en deux tubes (19, 22 ; 37, 38) enfilés concentriquement l'un dans l'autre, le tube extérieur (19, 37) comportant des ouvertures (21) qui sont diamétralement opposés aux ouvertures de logement de l'extrémité (2*) des tuyaux et qui sont recouvertes par le tube intérieur (22, 38).
  12. Echangeur de chaleur selon l'une des revendications 1 à 8, caractérisé en ce que chaque boîte de raccord (5) comprend un fond (6, 15, 29, 36) et un couvercle (7, 7*, 7**, 17, 33, 35) qui sont reliés par brasage le long des surfaces de jonction.
  13. Echangeur de chaleur selon la revendication 12, caractérisé en ce que les couvercles (7, 7*, 7**, 17, 33) et les fonds (6, 15, 29) comprennent des régions (12 ainsi que 31 et 32) qui se chevauchent et/ou qui s'emboîtent les unes dans les autres.
  14. Echangeur de chaleur selon l'une des revendications précédentes, caractérisé en ce que des organes (8, 18) de déviation de la circulation sont disposés dans les boîtes de raccord (5).
  15. Echangeur de chaleur selon la revendication 14, caractérisé en ce que les organes de déviation de la circulation sont formés de parties coudées (8) des couvercles (7*, 7**).
  16. Echangeur de chaleur selon la revendication 14, caractérisé en ce que les organes de déviation de la circulation sont formés par des cloisons (18) montées entre des parties (17) de couvercle.
  17. Echangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que les tuyaux plats (2) sont déformés aux extrémités (2*, 2**) de manière à présenter une section circulaire ou ovale.
  18. Echangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que les tuyaux plats (2) sont formés d'un tube de section circulaire ou ovale qui est comprimé dans la région comprise entre les extrémités (2*, 2**) de manière à présenter une section de tuyau plat à parois latérales parallèles.
  19. Echangeur de chaleur selon la revendication 17, caractérisé en ce que les tuyaux plats (2) consistent en un profilé extrudé qui comporte sur la totalité de la longueur sur laquelle il n'est pas déformé au moins une nervure d'appui (14) placée entre les parois latérales parallèles.
EP89123336A 1989-01-12 1989-12-18 Echangeur de chaleur Expired - Lifetime EP0379701B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900744A DE3900744A1 (de) 1989-01-12 1989-01-12 Waermetauscher
DE3900744 1989-01-12

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EP0379701A1 EP0379701A1 (fr) 1990-08-01
EP0379701B1 true EP0379701B1 (fr) 1992-09-16

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EP89123336A Expired - Lifetime EP0379701B1 (fr) 1989-01-12 1989-12-18 Echangeur de chaleur

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US (1) US5178211A (fr)
EP (1) EP0379701B1 (fr)
DE (2) DE3900744A1 (fr)
ES (1) ES2034570T3 (fr)

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Publication number Priority date Publication date Assignee Title
EP0710811B2 (fr) † 1994-11-04 2010-08-11 Denso Corporation Un système de climatisation pour véhicule

Also Published As

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EP0379701A1 (fr) 1990-08-01
US5178211A (en) 1993-01-12
DE58902300D1 (de) 1992-10-22
ES2034570T3 (es) 1993-04-01
DE3900744A1 (de) 1990-07-26

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