EP1321734A1 - Echangeur de chaleur à tubes plats et procédé de fabrication - Google Patents

Echangeur de chaleur à tubes plats et procédé de fabrication Download PDF

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Publication number
EP1321734A1
EP1321734A1 EP02020114A EP02020114A EP1321734A1 EP 1321734 A1 EP1321734 A1 EP 1321734A1 EP 02020114 A EP02020114 A EP 02020114A EP 02020114 A EP02020114 A EP 02020114A EP 1321734 A1 EP1321734 A1 EP 1321734A1
Authority
EP
European Patent Office
Prior art keywords
flat
heat exchanger
flat tube
tube
exchanger according
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.)
Withdrawn
Application number
EP02020114A
Other languages
German (de)
English (en)
Inventor
Walter Demuth
Wolfgang Geiger
Martin Kotsch
Hans-Joachim Krauss
Hagen Mittelstrass
Karl-Heinz Staffa
Christoph Walter
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 EP1321734A1 publication Critical patent/EP1321734A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F28D1/0478—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag 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
    • F28F9/0202—Header boxes having their inner space divided by 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
    • F28F9/0221—Header boxes or end plates formed by stacked 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
    • F28F9/0243—Header boxes having a 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
    • F28F9/04—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
    • 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
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0073—Gas coolers

Definitions

  • the invention relates to a flat tube heat exchanger, in particular for a heating or air conditioning system for a motor vehicle according to the preamble of claim 1, and a method for producing such Flat tube heat exchanger according to the preamble of Claim 22.
  • the serpentine flat tubes open at the other end in a cross-divided collection tube piece, one half as Distributor for feeding the refrigerant into a part of the channels each Flat tube and the other half acts as a collector, in the other Channels of each flat tube open.
  • Umlenkrohr GmbHen is therefore the refrigerant in block depth direction from one to the other channels deflected the respective flat tube.
  • the two serpentine flat tubes prefabricated as separate components, each with a straight Flachrohrendteil flat side together and with the abutting ends in the Collecting or deflecting tube piece inserted and sealed.
  • Such flat tube heat exchanger allow, in particular with regard to production costs, still wishes open.
  • EP 0 414 433 discloses a duplex heat exchanger comprising a Refrigerant flow in cross-countercurrent allows by two of successively arranged flat heat exchangers, hereinafter referred to as Blocks designated, each with two headers, over a variety consists of flat tubes connected to each other.
  • the two blocks are connected to each other by means of flange and O-ring seals, for which they are separated, clamped, soldered and soldered together after soldering need to be connected.
  • Such a duplex heat exchanger Made of two blocks comes with a variety of items and one associated with relatively high production costs, making the production expensive is.
  • It is an object of the invention is a flat tube heat exchanger of the beginning to improve the type mentioned.
  • a flat tube heat exchanger in particular for a heating or air conditioning system for a motor vehicle, with a plurality of flat tube elements and at least two with the flat tube elements connected collecting pipes provided, with two each Flat tube elements are connected to each other cohesively.
  • the flat tube elements preferably have two torsion regions. Such a design allows for easy production wherein the individual flat-tube elements are stable in themselves and thus process well to let. The dead space can be reduced by the fact that one each Torsions Scheme each flat tube element adjacent to each of the Collecting tubes is arranged.
  • the flat tube elements are twisted by 90 °, in particular in the opposite direction, which offers manufacturing advantages.
  • a torsion can be provided in the same direction, so that with two 90 ° turns a 180 ° rotation of the refrigerant over the entire width of the flat tube heat exchanger takes place.
  • the flat tube elements so arranged between the headers and the manifolds interconnected, that they can be flowed through in countercurrent operation, wherein partition walls can be arranged in the headers, so that arranged within a block of between two headers Flat tube elements a subdivision is possible, and, for example, two blocks of manifold flat tube element assemblies arranged one behind the other are.
  • the manifold is through formed into a groove shaped sheet metal strip whose edges in run substantially parallel to a longitudinal median plane of the channel and forming an open gap for receiving the free ends of the flat tubes serves.
  • the edges can be a constant distance or a have repeated parallel offset (passes).
  • the metal strip on its interior and / or Be outside lotplattiert, if he, what will be discussed, out a flat material is formed.
  • This embodiment offers the Possibility to simplify the soldering process.
  • the edges of the metal strip may diverge outwards and so form an insertion bevel for the flat tubes, which the Assembly process much easier.
  • the cross section of the gutter can in particular easy way to match an omega. It results in a stable Cross-section, which is also particularly easy for the insertion of the flat tube ends suitable.
  • the closed area of the channel with cuts be provided for insertion of separation or end walls and also with openings that serve as inlet or outlet for the medium can serve.
  • an end wall with provided a slot into which protrude one or more flat tubes.
  • the separation or end walls can provide with recesses corresponding to the cross section of the channel, preferably So the Omega cross section, correspond and in the longitudinal direction let slide onto the gutters, so that the arrangement of incisions, optionally be provided later in the manifold must, is not necessary, and at the same time the space between Block ribs and feed pipes against misguided air. It will be later though also be shown that such cuts or openings also even before the transformation of the metal strip to its channel shape Punching can be introduced so that even then a cutting Editing is not required.
  • the flat tubes with 90 ° twisted ends in the Spalt are used, with the twisted ends of several flat tubes in the interior of the gutter directly abut each other and so the distance set the individual flat tubes.
  • the Distance of the twisted outer part of the flat tubes from the free end respectively be chosen so that the twisted part immediately as a stop to the can serve the gap-forming edges.
  • the collection tube provides a method in which as the starting material provided at least on one side solder plated flat sheet metal strip which is bent inwards to the gutter with the solder-plated side, whose edges are at least at one point away from each other, the one tailored to the strength of counselbeenden flat tubes Gap forms.
  • Such a production also makes it possible in a simple way to provide punches in the initially flat sheet metal strip, which after forming such a metal strip to its final shape, such as in a multi-stage or progressive composite press tool can happen, the incisions for inserting the separation or End walls or the inflow and outflow openings for the medium form.
  • the configuration can also be made such that after inserting the free flat tube ends in the gap between the Edge the later solder joint a certain distance from the flat tube end , so that is avoided by capillary forces in solder the flat tube channels runs.
  • a solder foil or a thin lot-coated sheet metal are inserted.
  • a flat tube at the beginning of the flat tube at a first point, which from Flat tube beginning at the length (L1) is spaced, at a second Position, which is spaced from the flat tube beginning by the length (L2), and at the flat tube end is rotated by 90 °, and the flat tube in his Center is provided with a Sollrissline and bent so that both Halves of the flat tube lie flat against each other in one end region come, wherein the wall of the flat tube at least partially, i. at the Outer radius, rips open.
  • the two sheet halves at Circumference is straightened and compressed until touching lie together.
  • the direct concern of the two End sections with their flat sides has a shape-stabilizing and space-saving effect In particular, this measure minimizes the width or height of the Slot on the terminal compartment component at least slightly more as the double thickness or height of the flat tube.
  • a terminal compartment component Used manifold, a common, preferably on the entire collection tube length continuous longitudinal slot for insertion a plurality of juxtaposed pairs of adjacent flat tube part end portions has, what the building and assembling the flat tube connection structure and a whole, using this Heat exchanger flat tube block further facilitated.
  • a Collecting tube to be used with passages There is also a manifold with a common longitudinal slot for the Flachrohr Federatione to be inserted therein easier to manufacture than a manifold, each with a slot for each flat tube part.
  • a common and certainly not a continuous collection tube longitudinal slot so no exact manufacturing tolerances are met as in the case of individual Insertion slots for each two with flat side adjacent end portions configuredsteckenden flat tube parts.
  • a development of the invention has the advantage that during the Process step for introducing the predetermined tear line simultaneously and thus without significant additional effort Lotgurstopprillen be introduced, with which stopped a flow of solder from the area of the joint or at least can be reduced.
  • Fig. 1 a piece of a flat sheet metal strip 1 'is shown, the Preparation of a manifold according to the present invention provided is.
  • This sheet metal strip 1 ' is a slot-shaped punching the second and provided with a round also punched-out opening 3.
  • Of the Sheet metal strip 1 ' is on the side facing away from the viewer in not Lotplattiert manner shown in detail.
  • the ends or at least one end of a gutter may have at least one bevel in the direction of the flat tubes to be inserted, as the insertion aid to serve for the flat tubes.
  • FIGS. 3 and 5 make it clear that the channel 1 is relatively simple Way a manifold can be formed when partitions 8 different Divide sections of the channel against each other and, for example one of the openings 3 as an inflow opening to the manifold in the sense of Arrows 9 is flowed through and another opening 3 in another Section of the manifold as a drain opening to the outflow in the sense of Arrow 10 is used.
  • the partitions 8 are in the slot openings 2 used, which are dimensioned so that the lowest point of Slot 2 in the final shape of the channel 2 of FIG. 3 or FIG. 5 with the Beginning of the end 7 'of the flat tube coincides.
  • the partition 8 is formed as a solder-plated flat sheet, then can inserted into the slot 2 and then soldered in the channel 1, whereby the flat tubes 7 soldered to the edges 5 of the channel tight be so that a heat exchanger can be formed, the flat tubes flowed in a manner not shown by one of the media be involved in the heat transfer, while the second Medium through the manifold, i. through the channel 1 and through the flat tubes 7 flows.
  • an additional slot Be provided (not shown), in which the ends of the flat tubes 7 is inserted are.
  • the partitions preferably have cutouts 21, which can at least partially take the pipes.
  • Fig. 6 shows a variant of a heat exchanger in so far as here
  • Flat tubes 11 inserted into the groove formed as a collecting channel 1 are, whose inserted between the edges 5 ends 11 'in each case by 90 ° are twisted relative to the rest of the pipe section.
  • the flat tubes 11 be traversed in the direction of the arrow 12.
  • the Possibility to ribbed the spaces between the flat tubes 11 provided to improve heat transfer.
  • For the rest can be the collecting duct formed by the channel 1 in the same way Divide partitions 8 in its length and with inlet or outlet openings 3, as explained with reference to FIGS. 1 to 5.
  • the Production of the channel 1 also takes place in the same way.
  • FIG. 7 reveals in this context that the in the channel 1 pushed ends 11 'of the flat tubes 11 abut each other and so the distance between the individual flat tubes 11 in a simpler Way can be maintained.
  • FIG. 8 shows a variant of the collecting tube designed as a channel insofar as here the edges 5a diverge outwards and only in one Abut area of the flat tubes 7, which is slightly from the free end of the Randes is removed.
  • the edges 5a in this way each form an insertion bevel for the free ends of the flat tubes 7.
  • Pipe ends limits the engagement or insertion depth of the pipes, since by twisting the pipe ends, the width of the pipe ends with increasing distance from the pipe end grows. The soldering takes place in Contact area of the edges 5a with the flat tubes 7 instead.
  • Figs. 9 to 12 illustrate another way of attaching End walls for the trained as a gutter 1 collection tube.
  • Be lotplattiere plates 13 with a recess 16 in the cross-sectional shape made the channel 1, which then after the flat tube 14 or several flat tubes are inserted into the channel, from the outside to the Trough 1 be deferred until it on the one or more flat tubes issue. In this position, the sheets 13 are then together with the Flat tube and the channel 1 soldered.
  • This embodiment also opens up the possibility of several such recesses 16 to arrange in a common plate 15, then, as Fig. 12 shows, as the end plate of three adjacent Hoppers in the form of grooves 1 is usable and for example the production of a serpentine heat exchanger with in loops laid flat tubes 17 and 18 allows.
  • FIG. 12 also shows a cover strip 22 which serves as much as possible little false air is generated.
  • Figs. 13 to 18 is an example of a method for producing a Flat tube connection structure illustrated in successive process steps, as in particular for heat exchangers of vehicle air conditioners is usable with carbon dioxide or another Refrigerants work.
  • Fig. 13 illustrates an initial process step in which a bent over Flat tube blank 101 provided with at least one sheet 102 becomes.
  • This can be a serpentine flat tube blank with several bends or even just around a U-shaped flat tube blank with a single arc, in Fig. 13 for clarity half of the flat tube blank 101 only a bow and the two subsequent, rectilinear flat tube sections 101 a, 101 b explicitly are shown.
  • the outer radius of the Arc 102 centered over the entire flat tube width extending, transverse tear line introduced by means of a mandrel 103 or a needle.
  • Fig. 14 shows in the plan view of the sheet 102 through the Scoring the outer edge generated tear line 104.
  • Fig. 15 illustrates the movement of the thus processed flat tube blank 101 in a forming tool, of which schematically only two here pressing jaws 105, 106 are shown.
  • the flat tube blank 101 is inserted so far into the pressing tool that only his bow 102 with the outside crack line 104 between the Pressing jaws 105, 106 is located.
  • the two adjoining the arch 102, rectilinear flat tube sections 101a, 101b are replaced by a interposed spacer block 107 supported and kept at a distance.
  • a solder sheet 108 is inserted.
  • the pressing tool is activated, i. the two pressing jaws 105, 106 move towards each other, as indicated by corresponding arrows.
  • the flat tube 101 tears at the outer radius of the arc while compressing the sheet 102 along the previously introduced tear line 104 on.
  • everyone there Flow channel of the flat tube blank 101 to form a corresponding Mouth opening breaks open to the outside.
  • eight flow channels belong to eight mouth openings 109 recognize.
  • the flanks are standing essentially in front of the flat tube thickness, so that on the one hand the Do not hinder the forming process and on the other hand the same side Flanks of both pressing jaws 105, 106 in the end position shown in Fig. 16 of the pressing tool against each other and the side Prevent squeezing out of pipe material. In other words, will This realizes a calibration process, which together with the forming process takes place or adjoins this and with the Flachrohrendabête 102a, 102b are calibrated in terms of width and height.
  • the part of the formed flat tube blank shown in FIGS. 16 and 17 thus includes two multi-channel flat tube parts 110, 111, respectively a rectilinear flat tube section 101a, 101b and the associated, bowed bow halves 102a, 102b include and over the not torn inner arc radius are integrally connected to each other.
  • the two transition regions 112, 113 form between the respective End portion 102a, 102b and the respective center portion 101a, 101b a shoulder region whose outer dimension perpendicular to the flat tube plane from the double flat tube thickness in the end section area around the Height of the spacer block 107 increases in the central portion region, wherein the Height of the spacer block 107 the remaining distance of the Flachrohrstoffabête 101a, 101b for later installation of the flat tube parts 110, 111 defined in a heat exchanger flat tube block and accordingly is selected.
  • the pressing jaws 105, 106 are released, the deformed flat tube is removed, and the spacer block 107 will be removed. Then on the reshaped end section with the two rectilinear arc halves 102a, 102b a collecting manifold 114 deferred. Subsequently, the thus prefabricated flat pipe connection structure sealed by a conventional soldering, preferably in a common soldering process, in which the rest Soldered joints of a heat exchanger Flachrohrblock arrangements made in which the connection structure is used.
  • soldering flux stop grooves 118 are provided, the preferred without much extra effort in the pipe bend area or the adjacent part of the rectilinear pipe center sections 101a, 101b can be introduced during the process step, in which by the scoring mandrel 103 and the scoring needle, the predetermined tear line 104th is introduced.
  • three are used Löthnestopprillen 118 outside and inside by a corresponding Scratching tool 119, see Fig. 13, introduced into a pipe region which is in the finished tube block between the straight bent sheet halves 102a, 102b on the one hand and a corrugated fin on the other hand, each is inserted between the Flachrohrstoffabête.
  • the manifold 114 has an apparent from Fig. 18 ⁇ -shaped Cross section, i. the limiting the continuous longitudinal slot Longitudinal edges 115, 116 are slightly widened away from each other and thus facilitate the pushing on of the collecting tube 114 or the insertion the respective Flachrohrendabitess 102a, 102b.
  • Collecting tube 114 with these slot-limiting longitudinal edges 115, 116th against the shoulder region 112, 113 of the formed flat tube for Plant comes, automatically the insertion depth of the two in one piece limited connected flat tube parts 110, 111 containing flat tube. Over an associated mouth opening are thus ever a flow channel each of the two multi-channel flat tube parts 110, 111 with a from Collector 114 defined collecting space 117 in fluid communication.
  • the flat-tube connection structure according to the invention according to FIG. 18 can be used, for example, for the aforementioned serpentine-type heat exchanger which is used as an evaporator in CO 2 vehicle air conditioners and has a refrigerant deflection in the block depth direction, one or more of serpentine flat tubes being divided into a cross-divided collection tube piece and / or or open into an undivided Umlenkrohr Gi. Both the connection to the transversely divided manifold and the connection to the or the Umlenkrohr spicye can be realized by the present, flat-tube connection structure according to the invention.
  • the manifold 114 according to FIG. 18 can be used with the modification that it is provided with a corresponding transverse partition wall.
  • the Umlenkrohr harmonye the undivided manifold 114 shown in FIG. 18 is used.
  • modified flat-tube connection structures can be produced according to the invention are.
  • the arc outside tearing of the flat tube and thus the opening of the or the flat tube channels leads the arc halves then one more have a certain distance from each other.
  • the eight-channel flat tube shown any other conventional, bent Flat tube with only one flow channel or with any other number of flow channels can be used.
  • side by side pairs of flat tube sections formed by pipe bend forming in the common, preferably continuous Collector longitudinal slot can be inserted.
  • the inventive method has the advantage that couples of flat tube parts, with the flat side adjacent end portions in one Terminal compartment component are to be inserted, from a single flat tube blank can be made and in one piece with each other remain, with their flow channels without cutting in the bow area outside tearing open.
  • the coherent flat tube parts, the parts of a rectilinear flat tube or a serpentine flat tube can represent when building a flat tube block for an associated heat exchanger comparatively easy to handle, and the insertion depth into the terminal compartment component can be automatically limit.
  • serpentine heat exchanger this can be done using a single continuous Flachrohrserpentine be built, but he can also consist of several serpentine segments, up to the case that the respective segment only from the two connected by a bow, straight sections of a U-shaped flat tube blank.
  • FIGS. 19A to 19D and Fig. 20 are shown schematically.
  • a Coil is a flat tube blank 201 with a plurality of not in detail unwound lines and cut to length.
  • Fig. 19A shows a corresponding cut to length flat tube blank 201, which at the flat tube beginning 202, at a first location 203, which from the flat tube beginning 202 is spaced by the length L1, at a second location 204, which from the Flat tube beginning 202 is spaced by the length L2, and at the flat tube end 205 is rotated by 90 °, the torsion in each of the same direction is done.
  • torsion may be provided in the opposite direction, wherein each twist is opposite to the one or more adjacent torsions.
  • the thus prepared flat tube blank 201 at its center 206 (i.e., spaced from the flat tube beginning 2 by the length (L1 + L2) / 2) provided with a predetermined breaking point or tear line 207 and order a mandrel D serving as a spacer is reshaped so that both Halves of the flat tube blank 201 come to rest at a distance A. Simultaneously with or subsequent to the provision of the predetermined tear line 207 also Lottikstopprillen can be provided.
  • a solder material can be introduced, and a Baking tool B transforms the 180 ° arc portion 208 such that both Halves of the flat tube blank 201 come to lie flat against each other (see Fig. 19D).
  • the thorn D again ensures that the desired distance is maintained.
  • the mandrel D and the jaw tool B are removed.
  • a flat tube half is referred to a flat tube element 209 taken.
  • headers have - according to a first variant - in their longitudinal direction extending slots, with one of the manifolds twice as has many slots, as the other manifold, since in each case a slot for the flat tube beginning 202 and the flat tube end 205 of slightly lower Width, but only one slot for the flat tube center 206, the doubled is required by slightly larger width.
  • the headers are replaced by a Formed channel, for example, has a ⁇ -shaped cross section, as described above.
  • the headers have a certain number of refrigerant diversions on, which are tuned so that an optimal refrigerant flow causes becomes.
  • the gas cooler block can - depending on the requirement - a common Corrugated rib or two separate corrugated fins, which is a far-reaching thermal Ensure decoupling.
  • the refrigerant After each passing through a width of the flat tube heat exchanger, i.e. after flowing through a flat tube element 209, the refrigerant enters a manifold, there is a mixing the refrigerant of the individual lines in the flat tube, so that at the beginning the further flow through another flat tube element 209 the Refrigerant in all lines has approximately the same temperature.
  • the torsion of the flat tubes also improves the mixing of the refrigerant.
  • a gas cooler 210 may be assembled as shown schematically in FIG is indicated.
  • three flat tube elements 209 i. in the present Case a flat tube blank 201, which according to the above Description has been reshaped and a flat tube element 209, which was also converted according to the above description, however separated from its second half, Z-shaped joined together, wherein Collecting tubes 211 are provided at the deflection points 212 to a Allow mixing of the refrigerant.
  • Collecting tubes 211 are provided at the deflection points 212 to a Allow mixing of the refrigerant.
  • a 2-fold Deflection of the refrigerant in the depth of the gas cooler 210 The The flow direction of the refrigerant is indicated in FIG. 20 by arrows on the refrigerant inlet. and -austritt and the flow direction of the air to be cooled indicated by an arrow from below.
  • Fig. 21 in the form of a gas cooler are two individual blocks each with two manifolds 221, each individual block soldered for themselves and then on common side panels to a Block is assembled, provided.
  • a manifold 221 of each block is provided with a partition wall 223 so that the flat tube heat exchanger flows through a total of four sub-blocks.
  • the refrigerant enters the rear lower sub-block, it travels the flow through the sub-block via the manifold 221 in the rear upper part block, which flows through it, is then in the middle in the lower one Passed part of the front part block, flows through the sub-block and passes then in the upper front part block, where it after flowing through it exits again, as indicated by the arrows in Fig. 21.

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  • 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)
EP02020114A 2001-10-02 2002-09-07 Echangeur de chaleur à tubes plats et procédé de fabrication Withdrawn EP1321734A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE10149754 2001-10-02
DE10149754 2001-10-02
DE10213193 2002-03-25
DE10213193 2002-03-25
DE10234319 2002-07-26
DE10234319 2002-07-26

Publications (1)

Publication Number Publication Date
EP1321734A1 true EP1321734A1 (fr) 2003-06-25

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Application Number Title Priority Date Filing Date
EP02020114A Withdrawn EP1321734A1 (fr) 2001-10-02 2002-09-07 Echangeur de chaleur à tubes plats et procédé de fabrication

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EP (1) EP1321734A1 (fr)
DE (1) DE10241635A1 (fr)

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EP1459025B1 (fr) * 2001-12-21 2010-03-17 Behr GmbH & Co. KG Dispositif d'echange de chaleur
WO2015014255A1 (fr) * 2013-08-02 2015-02-05 杭州三花微通道换热器有限公司 Échangeur de chaleur et son procédé d'usinage
CN112756926A (zh) * 2021-01-26 2021-05-07 苏州亿创特智能制造有限公司 复合钢管及其制备方法
CN114393378A (zh) * 2022-01-13 2022-04-26 天津大起空调有限公司 二氧化碳气冷器集流管生产方法

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DE102004011608A1 (de) * 2004-03-18 2005-10-13 Obrist Engineering Gmbh Wärmetauscher einer Fahrzeugklimaanlage
FR2877077B1 (fr) * 2004-10-27 2006-12-22 Valeo Thermique Moteur Sas Echangeur de chaleur comportant des tubes munis d'une butee
ATE510179T1 (de) * 2006-03-15 2011-06-15 Behr France Hambach Sarl Wärmeübertrager, insbesondere kondensator für klimaanlagen, insbosondere von kraftfahrzeugen
DE202010000951U1 (de) 2010-01-22 2010-04-22 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Gaskühler für Klimaanlagen in Kraftfahrzeugen
DE102015118969A1 (de) 2015-11-05 2017-05-11 TT&C Thermotransmission & Cooling UG Wärmeübertrager, insbesondere für Hochdruckkältemittel

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FR2793013A1 (fr) * 1999-04-28 2000-11-03 Valeo Thermique Moteur Sa Echangeur de chaleur brase, en particulier pour vehicule automobile

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1459025B1 (fr) * 2001-12-21 2010-03-17 Behr GmbH & Co. KG Dispositif d'echange de chaleur
WO2015014255A1 (fr) * 2013-08-02 2015-02-05 杭州三花微通道换热器有限公司 Échangeur de chaleur et son procédé d'usinage
CN112756926A (zh) * 2021-01-26 2021-05-07 苏州亿创特智能制造有限公司 复合钢管及其制备方法
CN114393378A (zh) * 2022-01-13 2022-04-26 天津大起空调有限公司 二氧化碳气冷器集流管生产方法
CN114393378B (zh) * 2022-01-13 2023-07-07 天津大起空调有限公司 二氧化碳气冷器集流管生产方法

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