EP1887303A2 - Echangeur thermique et son procédé de fabrication - Google Patents

Echangeur thermique et son procédé de fabrication Download PDF

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Publication number
EP1887303A2
EP1887303A2 EP07015649A EP07015649A EP1887303A2 EP 1887303 A2 EP1887303 A2 EP 1887303A2 EP 07015649 A EP07015649 A EP 07015649A EP 07015649 A EP07015649 A EP 07015649A EP 1887303 A2 EP1887303 A2 EP 1887303A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
thin
sections
exchanger according
thick sections
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Withdrawn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
EP07015649A
Other languages
German (de)
English (en)
Other versions
EP1887303A3 (fr
Inventor
Eberhard Zwittig
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 EP1887303A2 publication Critical patent/EP1887303A2/fr
Publication of EP1887303A3 publication Critical patent/EP1887303A3/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Withdrawn legal-status Critical Current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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0025—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by zig-zag bend plates

Definitions

  • the invention relates to a heat exchanger for exchanging heat between two or more media. Moreover, the invention relates to a method for producing such a heat exchanger and a possible use of such a heat exchanger.
  • Heat exchangers for exchanging heat are known from the prior art.
  • the production of such heat exchangers is usually very expensive, since a large number of parts must be joined together.
  • Essential components of a heat exchanger - also called heat exchanger matrix - which form its core structure for heat exchange between at least two media, such as pipes, sheets and ribs are usually soldered together, welded together, mechanically joined together or glued together. These joining methods are very time-consuming and therefore expensive.
  • heat exchangers and corresponding production methods are known in the prior art, in which the replacement matrix is produced in one step by extrusion (extrusion).
  • An exchange matrix produced in this way is known, for example, from US Pat DE 10 2004 011 354 A1 known.
  • the invention has for its object to provide a method for producing a heat exchanger and such a heat exchanger, which is particularly easy and inexpensive to produce.
  • the object is achieved by a heat exchanger according to the features of claim 1. With regard to the manufacturing process, the object is achieved by the features of claim 17.
  • the heat exchanger according to the invention comprises a base element, which is formed from a metallic strip of tape with alternating thin and thick sections, wherein the thick sections are respectively repeatedly deformed such that in the region of the thin sections cavities are formed. It is formed by simply forming a single endless metal strip or sheet metal strip several times in a single manufacturing step, a heat exchanger, which is designed in particular as a so-called micro-heat exchanger with very narrow flow channels.
  • the single base element contains all components required for a heat exchange, such as flow channels, which are formed by the cavities, and adjacent exchange surfaces.
  • such a trained heat exchanger is particularly variable. For example, by varying the length and width of the thin and thick portions of the tape strip, the heat exchange and thus the performance of the heat exchanger can be specified.
  • the thick sections are formed such that alternately segments with thick sections and segments with thin and thick sections arise, which are arranged parallel to each other.
  • the thick sections are reshaped in such a way that alternately segments with thin sections which are arranged parallel to one another are formed.
  • the thick portions of the tape strip are each kinked several times and alternately by 180 °.
  • the length of the thick sections is greater than the length of the thin sections.
  • the thick sections completely surround the thin section, wherein the height of the flow channel corresponds to the difference between the thin and thick band region or band segment.
  • the segments with thin and thick sections each have at least two thick sections, between which the thin section is arranged.
  • the respective segment has a u-shape, through which cavities are formed by abutment of thick segments in the folded, folded or kinked state of the tape strip, which serve as flow channels.
  • the tape strip has a varying tape thickness in a range of 0.3 mm to 1.2 mm with alternating thin and thick sections with uniformly thin tape thickness of 0.3 mm to 1.18 mm or uniformly thicker tape thickness of 0 , 32 mm to 1.2 mm.
  • the cavities preferably have a height of 0.02 mm to 0.2 mm (also called channel or gap width) and a length of 3 mm to 5 mm. The width of the cavity corresponds substantially to the width of the tape strip.
  • the segments with thick sections form dividing walls, which in each case separate two successive segments with thin and thick sections and resulting cavities from one another.
  • additional separate partitions or dividing sheets can be omitted within a primitive.
  • an exchange matrix can be formed without conventional separate partitions between the basic elements by delimiting the thin sections on both sides by thick sections. This allows a high heat transfer coefficient in conjunction with good heat conduction in the heat transfer direction.
  • the tape strip on each end of several adjacent thick sections In a further embodiment, the tape strip on each end of several adjacent thick sections.
  • the deformed, for example, folded state of the tape strip form the outer segments with only constant thick sections closed Ends that are provided as profiles, for example, for mounting or attachment.
  • the varying strip thickness is formed by introducing a predetermined surface structure.
  • the surface structure by rolling, etching, milling, punching and / or spaces can be introduced. Due to the varying strip thickness arise after forming, z. B. folding, the tape strip cavities, which have a corresponding channel height (also called channel or gap width) as flow channels.
  • the base element is in the deformed state from the bottom and / or from the top fluid-solderable solderable.
  • a plurality of basic elements are arranged one above the other.
  • This allows in a simple manner in the counter and / or direct current direction, wherein one of the basic elements in one direction and the overlying primitives in the other direction or all in the same direction are flowed through by a medium with different temperatures or different media.
  • a cross-flow heat exchanger with two or more crossed streams is possible in a simple manner.
  • the superposed basic elements are fluid-tight with each other connectable.
  • the respective base element is one-sided, in particular on the bottom side, or solder-coated on both sides.
  • a metallic strip of tape is punched out or cut out of a metallic endless strip as the basic element.
  • a predetermined surface structure is introduced, for example by etching, cross-rolling or milling, so that the tape strip alternately has thin and thick sections.
  • the thick portions of the tape strip are alternately arranged segments with thick sections and segments with thin and thick sections parallel to each other, so that in the region of the thin sections cavities are formed.
  • the production of the basic element takes place in one step by multiple forming a single sheet metal strip.
  • a heat exchanger with particularly small channel widths or heights of 0.02 mm and larger produced.
  • Such a micro-heat exchanger is due to the miniature version especially for cooling of electronic components, eg. B. for cooling a microprocessor.
  • FIG. 1 shows an exemplary embodiment of a base element 1 of a heat exchanger 2.
  • the base element 1 is a strip of metal, for example a metal strip.
  • FIG. 1 shows the base element 1 with varying strip thickness d 1,1 to d 1,2 in a range from 0.3 mm to 1.2 mm in the unfolded state.
  • the basic element 1 is divided into longitudinal sections alternately into thin sections 1.1 and thick sections 1.2. Both the thin sections 1.1 and the thick sections 1.2 have an associated constant strip thickness d 1.1 or d 1.2 .
  • the strip thickness d 1.1 of the thin sections 1.1 is in a range of 0.3 mm to 1.18 mm; the strip thickness d 1.2 in a range of 0.32 mm to 1.2 mm.
  • the base element 1 is punched or cut, for example, from an endless belt.
  • the endless belt is in particular a metal band made of a good heat-conducting metal, for.
  • a collar metal such as copper or brass.
  • a given surface structure is introduced on one side, for example by transverse rolling, etching, milling, broaching or in another suitable manner. That is, the base element 1 has a lower, substantially flat hinge side 1.3 and an upper hinge side 1.4 in serrated or crown shape.
  • the base member 1 of the lower band side 1.3 for example, solder coated. Since the solder is applied to the lower flat hinge side 1.3 of the base member 1, a running of the cavities formed in the thin sections 1.1 on the upper hinge side 1.4 with solder is avoided.
  • the base element 1 is in each case repeatedly deformed in the thick sections 1.2 at predetermined forming edges 3, in particular folded or folded.
  • the forming edges 3 are folds on which the bent or folded sections 1.2 are pressed together.
  • the thick sections 1.2 are formed several times such that alternately segments 4.1 with thick sections 1.2 and segments 4.2 with thin sections 1.1 and thick sections 1.2 are arranged parallel to each other and cavities 5 are formed in the region of the thin sections 1.1.
  • the thick sections 1.2 are each bent several times alternately by 180 °.
  • the segments 4.2 with thin and thick sections 1.1 and 1.2 each have at least two thick sections 1.2, between which the thin section 1.1 is arranged.
  • the edge-side sections 1.2 and the thin section 1.1 of the segments 4.2 are designed in such a form and size that cavities 5 with a height h 5 of 0.02 mm to 0.2 mm and a length l 5 of 3 mm to 5 mm formed are.
  • the cavities 5 have a width b 1 of the base element 1 and thus of the tape strip corresponding width b 5 .
  • thick sections 1.2 By repeatedly forming the thick sections 1.2, these form in the formed state of the tape strip consistently thick segments 4.1, which serve as partitions between two consecutive segments 4.2 with thin and thick sections 1.1 and 1.2. Thus, the upwardly open cavities 5 are covered by the thick segments 4.1 and successive cavities 5 separated from each other.
  • the base element 1 comprises at the edge in each case a plurality of adjoining thick sections 1.2. This results No accumulations of cavities 5 at the edge, which are used to hold brackets or attachments or as profiles.
  • the tape strip on the edge side a plurality of sections 1.2 with the same thickness d 1.2 .
  • the base element 1 can be solder-coatable in a fluid-tight manner from the underside and / or from the top in the deformed state. This allows a fluid-tight connection of stacked primitives 1, as shown in Figure 3 in more detail.
  • a plurality of basic elements 1 are arranged one above the other.
  • a so-called countercurrent or DC heat exchanger can be formed, in which the basic elements 1 are flowed through by fluids with alternating flow direction or with the same flow direction.
  • the basic elements 1 can be arranged one above the other and offset by 90 ° to one another. As a result, a so-called cross-flow heat exchanger is formed.
  • FIG. 4 and 5 show schematically a possible use of a heat exchanger 2 with a base element 1 as a cooling element for an electronic component.
  • the basic element 1 is arranged in FIG. 4 in the folded state by way of example in a housing 6 and soldered or glued there, for example.
  • cooling medium connecting elements 7 are provided on the edge.
  • FIG. 5 shows the heat exchanger 2 according to FIG. 4 in a side view.
EP07015649.2A 2006-08-08 2007-08-08 Echangeur thermique et son procédé de fabrication Withdrawn EP1887303A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006037011 2006-08-08

Publications (2)

Publication Number Publication Date
EP1887303A2 true EP1887303A2 (fr) 2008-02-13
EP1887303A3 EP1887303A3 (fr) 2013-04-10

Family

ID=38698695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07015649.2A Withdrawn EP1887303A3 (fr) 2006-08-08 2007-08-08 Echangeur thermique et son procédé de fabrication

Country Status (1)

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EP (1) EP1887303A3 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504207A1 (de) * 1985-02-07 1986-08-07 Siemens AG, 1000 Berlin und 8000 München Waermetauscher fuer einen elektronikschrank
EP0859203A2 (fr) * 1997-02-13 1998-08-19 Antonius Van Hecke Procédé et dispositif pour refroidissement d'air
US5836383A (en) * 1995-08-01 1998-11-17 Behr Gmbh & Co. Heat transfer device of a plate sandwich structure
US20020023741A1 (en) * 2000-08-31 2002-02-28 Behr Gmbh & Co. Plate-type heat exchanger
EP1435504A1 (fr) * 2003-01-02 2004-07-07 Hubert Antoine Echangeur de chaleur de forme prismatique
WO2007073849A2 (fr) * 2005-12-19 2007-07-05 Behr Gmbh & Co. Kg Paroi de transfert de chaleur a sorption et element de transfert de chaleur a sorption

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504207A1 (de) * 1985-02-07 1986-08-07 Siemens AG, 1000 Berlin und 8000 München Waermetauscher fuer einen elektronikschrank
US5836383A (en) * 1995-08-01 1998-11-17 Behr Gmbh & Co. Heat transfer device of a plate sandwich structure
EP0859203A2 (fr) * 1997-02-13 1998-08-19 Antonius Van Hecke Procédé et dispositif pour refroidissement d'air
US20020023741A1 (en) * 2000-08-31 2002-02-28 Behr Gmbh & Co. Plate-type heat exchanger
EP1435504A1 (fr) * 2003-01-02 2004-07-07 Hubert Antoine Echangeur de chaleur de forme prismatique
WO2007073849A2 (fr) * 2005-12-19 2007-07-05 Behr Gmbh & Co. Kg Paroi de transfert de chaleur a sorption et element de transfert de chaleur a sorption

Also Published As

Publication number Publication date
EP1887303A3 (fr) 2013-04-10

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