EP1300645A2 - Procédé de fabrication d'une structure de connection de tubes plats pour échangeur de chaleur - Google Patents

Procédé de fabrication d'une structure de connection de tubes plats pour échangeur de chaleur Download PDF

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Publication number
EP1300645A2
EP1300645A2 EP02018750A EP02018750A EP1300645A2 EP 1300645 A2 EP1300645 A2 EP 1300645A2 EP 02018750 A EP02018750 A EP 02018750A EP 02018750 A EP02018750 A EP 02018750A EP 1300645 A2 EP1300645 A2 EP 1300645A2
Authority
EP
European Patent Office
Prior art keywords
flat
arc
flat tube
tube
forming process
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Withdrawn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
EP02018750A
Other languages
German (de)
English (en)
Other versions
EP1300645A3 (fr
Inventor
Walter Dipl.-Ing. Demuth
Martin Dipl.-Ing. Kotsch
Hans-Joachim Dipl.-Ing. Krauss
Hagen Dipl.-Ing. Mittelstrass
Karl-Heinz Dipl.-Ing. Staffa
Christoph Dipl.-Ing. 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 EP1300645A2 publication Critical patent/EP1300645A2/fr
Publication of EP1300645A3 publication Critical patent/EP1300645A3/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • 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 method for producing a flat tube connection structure with a terminal compartment component and at least two flat tube parts, which in the terminal compartment component with each other flat side adjacent end portions open, for a heat exchanger.
  • Heat exchanger with such a flat pipe connection structure for example, as an evaporator and condensers / gas cooler in Vehicle air conditioners used with carbon dioxide or another Refrigerants work, the heat exchanger typically a tube block of several straight flat tubes or one or more serpentine flat tubes.
  • the serpentine flat tubes open into a cross-divided one Sammelrohr consensus, one half of which as a distributor for feeding the Refrigerant in a part of the channels of each flat tube and the other Half acts as a collector, in which the other channels of each flat tube lead.
  • the refrigerant in Block depth direction from one to the other channels of each Flat tube deflected be the two serpentine flat tubes as prefabricated separate components, each with a straight Flachrohrendteil flat side together and with the abutting ends in the collection or Umlenkrohr Suite inserted and sealed.
  • the invention is a technical problem to provide a method underlying, with the flat pipe connection structures of said Art, in which at least two flat tube parts with flat side adjacent End sections lead into a terminal compartment component, with Relatively low cost process reliable and reliable fluid-tight let produce.
  • the invention solves this problem by providing a manufacturing method with the features of claim 1.
  • this Procedures are the two opening into the terminal compartment component Flat tube pieces from a flat tube blank bent at least once manufactured, wherein transversely over the outer radius of the at least one Arc of the flat tube blank introduced a predetermined tear line and then a forming process is performed, wherein the Arc is compressed, causing the flat tube at the arc outer radius Bursting along the tear line, leaving openings for the one or more channels of the single or multi-channel flat tube blank emerge.
  • the terminal compartment component is fluid-tight over the compressed and torn at the outer radius Bow applied.
  • they join the bow two flat pipe sections with the two flat side adjacent Bog parts as end portions in the terminal compartment component.
  • Words arise in this way from every flow channel of the Flat tube blanks two channels, over the associated torn Mouth opening fluidly parallel in one of the terminal compartment part open terminal space.
  • a terminal compartment component a collection tube that uses a common, preferably continuous over the entire collection tube length Longitudinal slot for inserting several adjacent pairs of adjacent flat tube part end portions, which the construction and assembly of the flat tube connection structure and one of these using, entire heat exchanger flat tube block further eased.
  • a collecting pipe with common Longitudinal slot for the inserted flat tube pieces easier to finished as a manifold, each with a slot for each flat tube part.
  • no so 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.
  • solder material inserted into the inner arc area e.g. in the form of a solder sheet or a solder foil.
  • the solder material becomes during the forming process by the compression of the bow fixed by the arch parts and then stands in this area for Dichtlöten during a subsequent soldering process.
  • a development of the invention according to claim 6 has the advantage that during the process step for introducing the predetermined tear line simultaneously and thus introduced without significant additional effort Lot bathstopprillen be with which a flow of solder out of the area Joint can be stopped or at least reduced.
  • Figs. 1 to 6 is an example of a method for producing a Flat tube connection structure in successive process steps illustrates how they are used in particular for heat exchangers of vehicle air conditioning is usable with carbon dioxide or another Refrigerants work.
  • Fig. 1 illustrates an initial process step in which a bent over Flat tube blank 1 provided with at least one sheet 2 becomes.
  • This may be a serpentine flat tube blank with several sheets or even just around a U-shaped flat tube blank act with a single sheet, in Fig. 1 for clarity half of the flat tube blank 1 only one arc and the two subsequent, rectilinear flat tube sections 1a, 1b shown explicitly are.
  • Fig. 1 in the outer radius of the arc 2 in the middle a extending over the entire flat tube width, transverse tear line by means of a mandrel 3 or a needle brought in.
  • Fig. 2 shows in the plan view of the sheet 2 through the Scoring the outer edge generated tear line 4.
  • Fig. 3 illustrates the movement of the thus processed flat tube blank 1 in a forming tool, of which schematically only two here interesting pressing jaws 5, 6 are shown.
  • the flat tube blank 1 is inserted so far into the pressing tool that only his bow 2 with the outside crack line 4 between the pressing jaws 5, 6 is located.
  • the two adjoining the arch 2, rectilinear Flat pipe sections 1a, 1b are interposed by an Spacer block 7 supported and kept at a distance. In the area the sheet inside a solder sheet 8 is inserted. Then that will be Press tool activated, i. the two pressing jaws 5, 6 move towards each other, as indicated by appropriate arrows.
  • the Flanks are essentially in front of the flat tube thickness, so on the one hand, they do not obstruct the forming process and, on the other hand each side flanks of both pressing jaws 5, 6 in the in Fig. 4 end position of the pressing tool abut against each other and prevent the lateral pushing out of pipe material.
  • this realizes a calibration process that works together takes place with the forming process or adjoins this and with which the Flachrohrendabête 2 a, 2 b in width and height be calibrated.
  • the part of the formed flat tube blank shown in FIGS. 4 and 5 thus includes two multi-channel flat tube parts 10, 11, respectively a straight flat tube section 1a, 1b and the associated, straight bent Bow half 2a, 2b include and over the untapped Bogeninnenradius are integrally connected together.
  • the manifold 14 has a visible from Fig. 6 Q-shaped Cross section, i. the limiting the continuous longitudinal slot Longitudinal edges 15, 16 are slightly widened away from each other and thus facilitate the sliding of the manifold 14 and the insertion the respective Flachrohrendabitess 2a, 2b.
  • the collecting pipe 14 with these slot-limiting longitudinal edges 15, 16 against the shoulder portion 12, 13 of the formed flat tube to the plant comes automatically, the insertion depth of the two in one piece connected flat tube parts 10, 11 containing flat tube limited. Over an associated mouth opening are thus ever a flow channel each of the two multi-channel flat tube parts 10, 11 with a from the manifold 14 defined collecting space 17 in fluid communication.
  • the flat-tube connection structure according to the invention according to FIG. 6 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 collection tube 14 according to FIG. 6 can be used with the modification that it is provided with a corresponding transverse dividing wall.
  • the Umlenkrohr harmonye the undivided manifold 14 shown in FIG. 6 is used.
  • modified flat-tube connection structures according to the invention can be produced.
  • the sheet halves then still have a certain distance from each other.
  • any number can be used as required of inventively formed by pipe bend forming pairs of flat tube parts juxtaposed in the common, preferably continuous collector tube longitudinal slot be inserted can.
  • several pairs of flat tube parts in each one own inserted by several insertion slots, from each other spaced are introduced into a corresponding manifold.
  • any other conventional terminal compartment component can be used, e.g. a junction box.
  • the inventive method has the advantage that Pairs of flat tube parts, with flat side adjacent end portions be inserted into a terminal compartment component, from a single Flat tube blank can be made and one piece with each other stay connected, with their flow channels in the bow area be opened without cutting by external tearing.
  • the related Flat tube parts, the parts of a straight flat tube or a serpentine flat pipe are in construction a flat tube block for an associated heat exchanger comparatively easy to handle, and the insertion depth into the terminal compartment component can be limited automatically. Because of the engagement The inventive method is thus the creation of a cost-effective and production-safe execution of the refrigerant charge and exhausting a heat exchanger, e.g.
  • serpentine heat exchanger this can be done using a single continuous Flachrohrserpentine be built, but he can also consist of several serpentine segments, all the way to in the case that the respective segment only out of the two by an arc connected, straight sections of a U-shaped flat tube blank consists.

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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)
EP02018750A 2001-10-02 2002-08-22 Procédé de fabrication d'une structure de connection de tubes plats pour échangeur de chaleur Withdrawn EP1300645A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10149754 2001-10-02
DE10149754 2001-10-02

Publications (2)

Publication Number Publication Date
EP1300645A2 true EP1300645A2 (fr) 2003-04-09
EP1300645A3 EP1300645A3 (fr) 2008-09-03

Family

ID=7701895

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Application Number Title Priority Date Filing Date
EP02018750A Withdrawn EP1300645A3 (fr) 2001-10-02 2002-08-22 Procédé de fabrication d'une structure de connection de tubes plats pour échangeur de chaleur

Country Status (2)

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EP (1) EP1300645A3 (fr)
DE (1) DE10241633A1 (fr)

Cited By (1)

* 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243842A (en) * 1988-07-14 1993-09-14 Showa Aluminum Kabushiki Kaisha Method of making a brazeable metal pipe having tube-insertion apertures formed with guide lugs

Cited By (1)

* 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

Also Published As

Publication number Publication date
EP1300645A3 (fr) 2008-09-03
DE10241633A1 (de) 2003-04-10

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