EP1555503A2 - Tube plat d'échangeur de chaleur, en particulier pour condenseur - Google Patents

Tube plat d'échangeur de chaleur, en particulier pour condenseur Download PDF

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Publication number
EP1555503A2
EP1555503A2 EP20040028069 EP04028069A EP1555503A2 EP 1555503 A2 EP1555503 A2 EP 1555503A2 EP 20040028069 EP20040028069 EP 20040028069 EP 04028069 A EP04028069 A EP 04028069A EP 1555503 A2 EP1555503 A2 EP 1555503A2
Authority
EP
European Patent Office
Prior art keywords
flat tube
insert
structural elements
tube according
flat
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Withdrawn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
EP20040028069
Other languages
German (de)
English (en)
Inventor
Herbert Dr.-Ing. Damsohn
Thomas Dr.-Ing. Heckenberger
Dirk Prof. Dr.-Ing. Müller
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 EP1555503A2 publication Critical patent/EP1555503A2/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Withdrawn legal-status Critical Current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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • 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
    • F28D1/053—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 straight
    • F28D1/0535—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 straight 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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Definitions

  • the invention relates to a flat tube for a heat exchanger, in particular a capacitor according to the preamble of claim 1 and also a heat exchanger with flat tubes.
  • Flat tube heat exchangers are in many embodiments and applications They are known especially for engine cooling and Air conditioning of motor vehicles used, for. B. as a coolant / air cooler or as a refrigerant / air condenser.
  • Known flat tube heat exchanger have a brazed block of flat tubes and corrugated ribs on, by Ambient air is cooled. Due to the different heat transfer conditions on the inside and the outside of the pipes, are inside the flat tubes so-called turbulence generators or additional Heat exchange surfaces arranged in the form of a réelleberippung.
  • EP-A 302 232 of the Applicant is a one-piece, d. H. from a Sheet metal soldered flat tube known in which a zigzag or meandering turbulence insert by folding into the flat tube is integrated.
  • a flat tube of the aforementioned Type with regard to its heat transfer conditions on the inside of the pipe, z. B. on the coolant or refrigerant side to improve, if necessary to maintain a sufficient internal pressure resistance and under Circumstances to allow a cost-effective production.
  • the insert consists of a sheet metal strip, from which a variety of structural elements cut and be unscrewed from the plane of the sheet metal strip.
  • the structural elements thus protrude on both sides of the sheet metal strip, based from the inner wall of the flat tube and position the sheet metal strip thus approximately in the middle of the flat tube.
  • the structural elements form in the flow of the flat tube protruding flow guide, which each in transverse rows and in flow direction one behind the other are arranged.
  • the angle of rotation of the Flow control can be varied, in a range of about 60 to 90 degrees, with 90 degrees the strongest Switzerlandanker Ober at 60 Degree on the other hand reaches a larger heat exchange or condensate surface becomes.
  • the structural elements designed as approximately rectangular flow guide, which are connected by two twisted webs with the metal strip.
  • the flow control surfaces So they stay basically flat, while the elongated ones Webs absorb the torsion angle ⁇ by a plastic twist.
  • the flow guide are aligned in the direction of flow, point Therefore, no angle of attack to the flow and therefore have only a low flow resistance.
  • the sheet metal strip formed as a grid structure with transverse webs, to which the structural elements are tethered over the twisted bridges.
  • the consecutive lying structural elements offset from each other or point an opposite angle of inclination (due to an opposing Twist angle). This is the advantage of increased turbulence the flow medium and an improved heat transfer and optionally a stable clamping of the structural elements against the Reached pipe wall.
  • the flat tube is in one piece, z. B. formed as a welded flat tube, and the deposit is as a separate part pushed into the flat tube. It turns out the issued from the plane of the sheet metal strip structural elements insofar as advantageous, as they have a certain elasticity against deformation and therefore when inserted into the tube on the inner wall of the flat tube issue. This results in a uniform, d. H. complete soldering all structural elements with the inside of the flat tube. This is one hand because of the strength (Zuganker Angel) advantageous and on the other hand because the transferable heat output - only one with all structural elements soldered deposit can transfer the full power.
  • the flat tube is two-piece, z. B. in the form of two half-shells, while the insert has lateral edges between the half shells in the area of Longitudinal seams are laid and soldered.
  • the flat tube as a single piece Falzrohr with a lateral, preferably inward directed and / or open fold formed on the narrow side, so that the insert can be inserted both on the front side and from the side can.
  • the soldering whereby the sheet metal strip for the Flat tubes solderplattiert on both sides.
  • the deposit itself, incidentally, off a thinner sheet metal strip can be produced, may have none Lotplatt réelle on.
  • the flat tube and the insert in one piece, d. H. can be produced from a sheet metal strip.
  • the insert by Austanzen and twisting made of structural elements, then there is a folding of the Sheets, either in S-shape or B-shape, so a closed one Flat tube cross-section with one or two lateral folds arises, which then soldered together with the insert.
  • This one piece Solution has the advantage that no insertion or insertion, associated with a positioning of the insert, is required because the insert itself part of the tube is and thus automatically correct by the folding and soldering process is positioned.
  • Fig. 1 shows a first embodiment of the invention, an insert 1 with a punching pattern for a plurality of structural elements 2.
  • the insert 1 consists of a flat thin sheet metal strip on which the outline contours of the structural elements 2 in rows I, II, III arranged side by side and one behind the other are, wherein the structural elements 2 of the series II offset from the structural elements in series I and III are arranged.
  • a structural element 2 has a flow guide surface 2a, two webs 2b, 2c and two bevels or chamfers 2d.
  • FIG. 2 shows a section of the insert 1 with an exposed structural element 2.
  • the insert 1 has a substantially planar region 3, from which the structural element 2 is first cut (by punching) and then rotated out of the plane 3 by an angle ⁇ ,
  • the angle ⁇ is for example up to 90 degrees, but preferably a little less.
  • the structural element 2 is physically connected with its flow guide surface 2a via the two webs 2b, 2c with the plane 3 of the sheet metal strip.
  • the rotation of the structural element 2 takes place about a rotation axis a, which lies in the plane 3 and forms the common longitudinal axis of the two webs 2b, 2c.
  • the webs 2b, 2c by the angle ⁇ is rotated to its length, which is a plastic deformation, so that the surface 2a stops.
  • the flow guide surface 2a is angled at its outer edges running parallel to the axis of rotation a, so that edge strips 2e are formed there for the soldering to the flat tube.
  • the axis of rotation a is in the flow direction of the flow medium, which flows around the insert 1.
  • the flow guide surface 2a is therefore parallel to the flow direction, which is indicated by an arrow P.
  • Chamfers 2d which are provided in all structural elements, facilitate the insertion of the insert 1 in a flat tube.
  • Fig. 3 shows such a flat tube 4 with its end face 4a, which is simplified here shown as a rectangle with two parallel short and two parallel long sides.
  • the cross section 4a is filled by the insert 1, wherein the plane 3 is located in the median plane of the flat tube 4, supported by the exhibited structural elements 2, which are soldered via their edge strips 2e with the inner surfaces of the flat tube 4.
  • the angle ⁇ can be selected to be slightly less than 90 degrees, thereby achieving a resilient effect of the structural elements when inserted into the flat tube 4 and a secure abutment of the edge strips 2e.
  • Fig. 4 shows in a more detailed representation of a flat tube 5 in cross section, which is made of a double-sided soldered aluminum sheet and closed on a narrow side by a weld 6.
  • an insert 7 is arranged, which basically corresponds to the insert 1 described above, but below is still explained in more detail.
  • Fig. 5 shows a further embodiment of a flat tube 8, which is formed in two pieces and composed of two half-shells 8a, 8b. Between the half-shells 8a, 8b, each forming a fold 9, 10 on the narrow sides, an insert 11 is inserted, which is laterally extended by edge strips 11a, 11b and soldered into the folds 9, 10.
  • Fig. 6 shows a further embodiment with a one-piece flat tube 12, which is formed as a folding tube with a fold 13.
  • a liner 14 is inserted - from the front or from the side - and soldered to the flat tube 12.
  • the wall thickness of the flat tube is in each case greater than that of the inserts, because it is a matter of separately producible parts.
  • Fig. 7 shows a further embodiment with a flat tube 15, which is integrally formed with an insert 16 and folded in such an S-shape that at the two narrow sides in each case a fold 17, 18 results, where the flat tube is soldered.
  • the preparation takes place from a sheet metal strip of the same wall thickness, wherein first the insert 16 is punched and then the flat tube 15 is folded.
  • the sheet-metal strip is solder-plated on both sides, so that a soldering takes place at the folds 17, 18 and also with the structural elements of the insert 16.
  • Fig. 8 shows a further embodiment with a flat tube 19, which is integrally formed with an insert 20.
  • the folding takes place approximately in B-shape, so that a fold 21 results on a narrow side.
  • the wall thickness of the insert 20 and the flat tube 19 are equal.
  • Fig. 9 shows a further embodiment with a flat tube 22 which is integrally formed with a liner 23, but which has a smaller wall thickness than the flat tube 22 itself.
  • the folding of the flat tube 22 is similar to the embodiment of FIG. 7, ie in S-shape.
  • the different wall thickness is made possible by using a sheet metal strip with different wall thicknesses as the starting material, wherein the sheet metal strip has two outer strips with the greater wall thickness of the flat tube and a middle strip with the smaller wall thickness of the insert 23.
  • Fig. 10 shows a further embodiment of a flat tube 24 which is made in one piece with a liner 25 of lesser wall thickness, wherein a B-shaped fold - similar to the embodiment of FIG. 8 - takes place.
  • a metal strip is used with an outer strip with a smaller wall thickness and a wide strip with greater wall thickness, which is folded after soldering the insert 25 and soldered.
  • Fig. 12 shows a second cross section of the flat tube 26 in a plane XII (see Fig. 13) with the same insert 27, but structural elements 29 (an adjacent row) with an opposite angle ⁇ 2 , ie the structural elements 29 are the same amount in the opposite direction inclined as the structural elements 28th
  • Fig. 13 shows a pre-punched insert 27 ', but only the left part of the complete insert.
  • Starting material is a flat sheet metal blank with the blank of the pre-punched insert 27 ', from which four rectangular openings a, b, c, d are punched out for each of the structural elements 28', 29 '.
  • a bridge s is provided between each two Austanzungen a, b and c, d a bridge s is provided.
  • the lines m are center lines of the successively arranged structural elements 28 ', 29' and at the same time axes of rotation about which the cut-out structural elements 28 ', 29' are rotated out of the board 27 '.
  • the not yet punched-out structural elements 28', 29 ' are shown with their lying in the plane of cutting and bending edges.
  • Fig. 14 shows the finished punched insert 27, a so-called insert grid, which has a peripheral frame 30 and transverse webs 31 (Fig. 14 shows only the right part of the entire insert grid 27). Between the transverse webs 31, the structural elements 28, 29 are arranged, which were punched out of the board 27 'and rotated out of the plane, so that they each - as shown in Figures 11, Fig. 12 - in a row the angle ⁇ 1 and in the other row form the angle ⁇ 2 . With the punching of the structural elements 28, 29 and edge strips 28a, 28b and 29a, 29b are bent, which come 26 when inserting the insert with the inner wall of the flat tube 26 to the plant. (These strips are also already indicated in Fig. 13).
  • the structural elements 28 are connected to the transverse webs 31 via the webs s, which were twisted by unscrewing.
  • the structural elements 28, 29 windows 32 are formed in the insertion grid 27, which allow passage of the flow medium from one side to the other and vice versa.
  • Fig. 15 shows the finished insert grid 27 in a section along the line XV-XV, that is, only the outer frame 30 and the transverse webs 31 are cut, while the structural elements 28, 29 appear as a view. It can be seen that the structural elements 28, 29 are connected to the transverse webs 31 of the insert grid 27 only at the twisted webs s.
  • the edge strips 28a, 28b are slightly angled at both ends and form there run-on slopes 28c, 29c - thereby insertion of the insert grid 27 is facilitated in the flat tube 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP20040028069 2004-01-13 2004-11-26 Tube plat d'échangeur de chaleur, en particulier pour condenseur Withdrawn EP1555503A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004001971 2004-01-13
DE102004001971 2004-01-13

Publications (1)

Publication Number Publication Date
EP1555503A2 true EP1555503A2 (fr) 2005-07-20

Family

ID=34609542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040028069 Withdrawn EP1555503A2 (fr) 2004-01-13 2004-11-26 Tube plat d'échangeur de chaleur, en particulier pour condenseur

Country Status (2)

Country Link
EP (1) EP1555503A2 (fr)
DE (1) DE102004057407A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011006793A1 (de) * 2011-04-05 2012-10-11 Behr Gmbh & Co. Kg Abgaskühler

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8281489B2 (en) 2006-01-19 2012-10-09 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8434227B2 (en) 2006-01-19 2013-05-07 Modine Manufacturing Company Method of forming heat exchanger tubes
US8191258B2 (en) 2006-01-19 2012-06-05 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US20100243225A1 (en) 2006-01-19 2010-09-30 Werner Zobel Flat tube, flat tube heat exchanger, and method of manufacturing same
US8091621B2 (en) 2006-01-19 2012-01-10 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
DE102006006670B4 (de) * 2006-02-14 2014-02-13 Modine Manufacturing Co. Flachrohr für Wärmetauscher
US7921559B2 (en) 2006-01-19 2011-04-12 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
DE102006029378B4 (de) * 2006-06-27 2014-02-13 Modine Manufacturing Co. Flachrohr für Wärmetauscher und Herstellungsverfahren
US8683690B2 (en) 2006-01-19 2014-04-01 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8438728B2 (en) 2006-01-19 2013-05-14 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
DE102006031676B4 (de) * 2006-07-08 2025-11-13 Mahle International Gmbh Turbulenzblech, Verfahren zur Herstellung eines Turbulenzbleches und Verwendung eines Turbulenzbleches
DE102007004993A1 (de) 2007-02-01 2008-08-07 Modine Manufacturing Co., Racine Herstellungsverfahren für Flachrohre und Walzenstraße
DE102010023384B4 (de) 2010-06-10 2014-08-28 Modine Manufacturing Co. Herstellungsverfahren, insbesondere für Rohre und Abreißvorrichtung
DE102010026280A1 (de) 2010-07-06 2012-01-12 Behr Gmbh & Co. Kg Verfahren zur Herstellung eines Rohres für einen Wärmetauscher, insbesondere für ein Kraftfahrzeug
DE102010039062A1 (de) 2010-08-09 2012-02-09 Behr Gmbh & Co. Kg Verfahren zur Herstellung eines Wärmeübertragungsrohres für einen Wärmetauscher, insbesondere eines Kraftfahrzeuges
DE102011100637A1 (de) * 2011-05-05 2012-11-08 Striko Verfahrenstechnik W. Strikfeldt & Koch Gmbh Verwirbelungskörper
DE102012208354B4 (de) 2012-05-18 2021-11-04 Purem GmbH Wärmetauscher
DE102015200853A1 (de) 2015-01-20 2016-07-21 Mahle International Gmbh Verfahren zur Herstellung eines Flachrohres
EP3184948A1 (fr) 2015-12-21 2017-06-28 Mahle International GmbH Corps de tube et procédé de production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011006793A1 (de) * 2011-04-05 2012-10-11 Behr Gmbh & Co. Kg Abgaskühler

Also Published As

Publication number Publication date
DE102004057407A1 (de) 2005-08-11

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