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EP1640684A1 - echangeur de chaleur à tubes plats et ailettes ondulées - Google Patents

echangeur de chaleur à tubes plats et ailettes ondulées Download PDF

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Publication number
EP1640684A1
EP1640684A1 EP04023018A EP04023018A EP1640684A1 EP 1640684 A1 EP1640684 A1 EP 1640684A1 EP 04023018 A EP04023018 A EP 04023018A EP 04023018 A EP04023018 A EP 04023018A EP 1640684 A1 EP1640684 A1 EP 1640684A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
recesses
flat tubes
exchanger 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Withdrawn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
EP04023018A
Other languages
German (de)
English (en)
Inventor
Klaus Mohrlok
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.)
Modine Manufacturing Co
Original Assignee
Modine Manufacturing Co
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 Modine Manufacturing Co filed Critical Modine Manufacturing Co
Priority to EP04023018A priority Critical patent/EP1640684A1/fr
Publication of EP1640684A1 publication Critical patent/EP1640684A1/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Withdrawn legal-status Critical Current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
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
    • 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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/424—Means comprising outside portions integral with inside portions
    • F28F1/426—Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex

Definitions

  • the invention relates to a heat exchanger made of flat tubes and corrugated fins, with wave troughs, wave crests and these connecting wave flanks, wherein the flat tubes have at their broad sides a recess into which engages a part of the corrugated fin.
  • the known from DE 40 26 988 A1 heat exchanger of flat tubes and corrugated fins has on both broad sides of the flat tubes on a single recess, which represents a bead, which extends in the longitudinal direction of the flat tubes.
  • the beads in both broad sides touch each other on the middle longitudinal line and are connected to each other there.
  • the arranged between the flat tubes corrugated fins have a central series of projections, which then comes to lie in the joined heat exchanger in the mentioned bead of the flat tubes.
  • This embodiment can improve the cohesion of the heat exchanger in pre-soldering manufacturing process and thus bring benefits.
  • a disadvantage is the need to form the corrugated fins in the manner described with projections.
  • the corrugated fins are formed in their wave crests and troughs with a recess in each of which a broad side of the flat tube comes to rest.
  • These solutions also have the disadvantage mentioned above, because the corrugated ribs must be formed with the appropriate shape for embedding. Mentioned as representatives of this type are US 3,298,432 or German Utility Model No. 14 13 978.
  • it has become more and more to use the entire wave flank length of the corrugated fins and equip them with turbulence-generating training, for example, with cuts.
  • such solutions require investments in equipment and facilities to produce these corrugated fins efficiently and in large numbers.
  • EP 826 942 B1 As an example, reference is merely made to EP 826 942 B1.
  • the object of the invention is to provide a heat exchanger with higher performance characteristics without costly modification of the shape of the corrugated fins.
  • the recess is formed as a plurality of depressions in the broad sides of the flat tubes, and that the corrugated ribs come to lie with their ribs in the recesses of the broad side of a flat tube and with their Rippentälern in the recesses of the broad side of the adjacent flat tube ,
  • the term "corrugated fins" is to be understood as meaning all heat exchanger bodies which can be produced from thin sheet metal by means of rollers or by means of punching and which have a corrugated structure, however.
  • flat tube preferably means tubes with parallel broad sides and opposite narrow sides which connect the broad sides, but oval tubes are not excluded.
  • the flat tubes are preferably made by forming aluminum strip of thickness about 0.1-0.5 mm by means of soldering or Welding, for example, flat tubes produced by extrusion or drawing methods are also not excluded.
  • the wave crests and the wave troughs are housed according to the invention in the recesses of the broad sides of the flat tubes, no corrugated fins must be used, the entire edge length are provided with turbulence-generating training. Often, the available corrugated ribs can be used. Because the portions of the corrugated rib not provided with the turbulence-generating formations "disappear" in the depressions in the region of the mountains and valleys, essentially only the portions of the flanks of the corrugated ribs provided with the turbulence-generating formations extend in the distance between two flat tubes, which is both a performance improvement and a more compact design of the heat exchanger promises.
  • an improvement in the performance is to be expected by the fact that the contact between the corrugated fins and the flat tubes was intensified according to the invention.
  • it promises a performance improvement, especially in radiators, which have no internal inserts in the flat tubes, characterized in that the recesses in the flat tubes lead to greater turbulence of the flowing in the flat tubes coolant.
  • similar positive effects occur even when the heat exchanger is used as a gas cooler, condenser or evaporator, in which case, of course, a refrigerant flows through the flat tubes.
  • the corrugated fins have turbulence-generating formations, for example cuts, which are arranged in the wave flanks connecting the mountains and valleys.
  • turbulence-generating formations can also be corrugations of the flanks or other formations which lead to comparable effects.
  • the recesses are generally arranged preferably perpendicular to the longitudinal direction of the flat tubes.
  • a tilted to the longitudinal direction arrangement of the wells is a possible embodiment.
  • the recesses are arranged generally parallel to each other.
  • the depressions are preferably straight, but other courses are not excluded, z. B. for corrugated or staggered corrugated ribs.
  • the depressions in the one broad side of the one flat tube are arranged offset to the depressions in the other broad side of the one flat tube.
  • the depressions in the one broad side of a flat tube offset from the depressions in the adjacent broad side of the next flat tube are arranged.
  • the size of the offset corresponds to half the wavelength, or the so-called corrugated rib pitch.
  • the recesses extend transversely over approximately the entire broad side of the flat tube.
  • unchanged corrugated ribs can be used.
  • Transverse punctuated depressions which correspond to a corrugated fin shape in the mountains and valleys, are a possible but not preferred embodiment.
  • the depressions are dimensioned so that they can each accommodate a wave crest or a wave trough of the corrugated fin in itself so that the wave flanks extending between two broad sides of two flat tubes are formed as completely as possible, for example, with cuts.
  • a performance-wise preferred heat exchanger has a height of the corrugated fins between 5 and 10 mm.
  • the clear width of the flat tubes is between 1.0 and 1.8 mm.
  • the depth of the recesses is about 0.4 - 0.7 mm.
  • FIG. 1 shows a part of the heat exchanger, consisting of only one corrugated fin and two flat tubes.
  • FIG. 2 shows an enlarged detail from FIG. 1.
  • FIG. 3 shows another view of the part according to FIG. 1 with a flat tube row
  • FIG. 4 shows a representation similar to FIG. 1, but with a modified corrugated fin.
  • FIG. 5 shows a detail from FIG. 4.
  • FIG. 6 shows a schematic sequence of the tube production. Fig.
  • FIG. 7 shows an embodiment with two rows of flat tubes.
  • Fig. 8 shows the front view of the heat exchanger.
  • the embodiments relate to assembled flat and then produced by means of soldering flat tube 1 - corrugated fins 2 - compounds of michübetragers.
  • the flat tubes 1 of the embodiment are made of continuous aluminum strip material 33 of thickness 0.25 mm.
  • FIG. 6 shows a very schematic representation of the production sequence with reference to a view of a short section of the aluminum strip 33 .
  • the recesses 44 are prepared in both broad sides 3 of the subsequent flat tube 1 by forming and then both broad sides 3 are gradually erected and forming the narrow sides 30 , the flat tube 1 is formed.
  • the arrow next to FIG. 6 shows the running direction of the band 33 , which is identical to the longitudinal direction LR of the flat tube 1 resulting from the production process.
  • the two dashed arrows are intended to indicate the raising or folding of the two broadsides 3 .
  • the weld can be located in one of the narrow sides 30 , as it is indicated in Fig. 3 by the reference numeral 31 .
  • the "endless" flat tube 1 which runs off a corresponding device (not shown ) , is then cut to the required length.
  • the corrugated fins 2 are also made of endless aluminum strip material, but thinner. In the exemplary embodiment, the thickness of the corrugated fins 2 is 0.07 mm.
  • the aluminum strip for the flat tubes 1 is provided on the outside with a layer of solder, which is not shown in the figures.
  • the aluminum strip for the corrugated fin 2 or the aluminum strip for both the corrugated fin 2 and for the flat tube 1 could have a solder coating.
  • the flat tubes 1 and the corrugated fins 2 are assembled alternately such that in each recess 44 of the broad side 3 of a flat tube 1, a wave crest 20 of the corrugated fin 2 comes to rest and in each recess 44 in the opposite broad side 3 of the adjacent flat tube 1 a trough 21 in the local recesses 44 engages.
  • the stack of flat tubes 1 and corrugated fins 2 is commonly referred to as a network of the heat exchanger.
  • tube sheets 50 are attached to the opposite ends of the flat tubes 1 .
  • slotted tubes are considered, which also form the headers of the heat exchanger.
  • the finished network of the heat exchanger is now connected in a soldering oven after appropriate preparation.
  • the recesses 44 are perpendicular to the longitudinal direction LR of the flat tubes 2 and mounted parallel to each other. Furthermore, it can be seen that the depressions 44 are arranged in the one broad side 3 of a flat tube 1 offset from the depressions 44 in the other broad side 3 of a flat tube 1 . In addition, the depressions 44 in the one broad side 3 of a flat tube 1 offset from the depressions 44 in the adjacent broad side 3 of the next flat tube 1 are arranged. The offset corresponds to the corrugated rib pitch T.
  • the heat exchanger of the embodiments is a radiator. Cooling air flows through the corrugated fins 2 perpendicular to the plane of representation in FIG. 1.
  • the depth of the recesses 44 must move in a predetermined range, because it also affects the flow of the cooling liquid in the flat tubes 1 .
  • the sections 22 of the corrugated fins 2 consist of known, both sides of the plane of the wave flanks 25 exposed or expedigecard, narrow strip of strip material, as can be seen approximately from Figs. 2 and 4, respectively.
  • the cuts 22 are arranged close together, as shown in FIG. 3 makes clear. It should be noted that Figs. 1-7 have been enlarged to reveal the important details.
  • FIG. 7 shows an embodiment with a heat exchanger, the flat tubes 1, which are arranged in two rows 1.1 and 1.2 . There were only two Flat tubes 1 drawn per row. The corrugated fins 2 bridge the distance between the two rows 1.1 and 1.2, which was provided in this embodiment.
  • FIG. 8 shows the heat exchanger consisting of tube plates 50 , collecting tanks 60 with suitable inlets and outlets 70 for the cooling liquid flowing through the flat tubes 1 and equipped with the described cooling network.
  • the cooling network was reinforced with two opposite side parts 80 .

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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)
EP04023018A 2004-09-28 2004-09-28 echangeur de chaleur à tubes plats et ailettes ondulées Withdrawn EP1640684A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04023018A EP1640684A1 (fr) 2004-09-28 2004-09-28 echangeur de chaleur à tubes plats et ailettes ondulées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04023018A EP1640684A1 (fr) 2004-09-28 2004-09-28 echangeur de chaleur à tubes plats et ailettes ondulées

Publications (1)

Publication Number Publication Date
EP1640684A1 true EP1640684A1 (fr) 2006-03-29

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Country Link
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006037302A1 (de) * 2006-08-08 2008-02-14 Behr Gmbh & Co. Kg Wärmetauscher, insbesondere für eine Kraftfahrzeug-Klimaanlage
DE102008013018A1 (de) 2008-03-07 2009-09-10 Modine Manufacturing Co., Racine Flaches Wärmetauscherrohr
US7921559B2 (en) 2006-01-19 2011-04-12 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
CN102109293A (zh) * 2011-01-10 2011-06-29 哈尔滨空调股份有限公司 石化换热空冷器翅片管定位条装置
US8091621B2 (en) 2006-01-19 2012-01-10 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8191258B2 (en) 2006-01-19 2012-06-05 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
CN101776403B (zh) * 2009-01-13 2012-07-04 三花丹佛斯（杭州）微通道换热器有限公司 一种热交换器
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
US8438728B2 (en) 2006-01-19 2013-05-14 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8561451B2 (en) 2007-02-01 2013-10-22 Modine Manufacturing Company Tubes and method and apparatus for producing tubes
US8683690B2 (en) 2006-01-19 2014-04-01 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8726508B2 (en) 2006-01-19 2014-05-20 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US9038267B2 (en) 2010-06-10 2015-05-26 Modine Manufacturing Company Method of separating heat exchanger tubes and an apparatus for same
US20190041140A1 (en) * 2015-08-25 2019-02-07 Valeo Systemes Thermiques Heat exchanger
CN111256393A (zh) * 2018-11-30 2020-06-09 杭州三花研究院有限公司 翅片及换热器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE388044C (de) * 1922-03-01 1924-01-08 Frank Herman Stolp Kuehler fuer Explosionskraftmaschinen
US2011853A (en) * 1932-07-25 1935-08-20 Gen Motors Corp Radiator core
FR1259266A (fr) * 1960-06-09 1961-04-21 Serck Radiators Ltd Tubes métalliques à ailettes pour échangeurs de chaleur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE388044C (de) * 1922-03-01 1924-01-08 Frank Herman Stolp Kuehler fuer Explosionskraftmaschinen
US2011853A (en) * 1932-07-25 1935-08-20 Gen Motors Corp Radiator core
FR1259266A (fr) * 1960-06-09 1961-04-21 Serck Radiators Ltd Tubes métalliques à ailettes pour échangeurs de chaleur

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8434227B2 (en) 2006-01-19 2013-05-07 Modine Manufacturing Company Method of forming heat exchanger tubes
US8091621B2 (en) 2006-01-19 2012-01-10 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8726508B2 (en) 2006-01-19 2014-05-20 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
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
US8191258B2 (en) 2006-01-19 2012-06-05 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8281489B2 (en) 2006-01-19 2012-10-09 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US7921559B2 (en) 2006-01-19 2011-04-12 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
DE102006037302A1 (de) * 2006-08-08 2008-02-14 Behr Gmbh & Co. Kg Wärmetauscher, insbesondere für eine Kraftfahrzeug-Klimaanlage
US8561451B2 (en) 2007-02-01 2013-10-22 Modine Manufacturing Company Tubes and method and apparatus for producing tubes
DE102008013018A1 (de) 2008-03-07 2009-09-10 Modine Manufacturing Co., Racine Flaches Wärmetauscherrohr
CN101776403B (zh) * 2009-01-13 2012-07-04 三花丹佛斯（杭州）微通道换热器有限公司 一种热交换器
US9038267B2 (en) 2010-06-10 2015-05-26 Modine Manufacturing Company Method of separating heat exchanger tubes and an apparatus for same
CN102109293B (zh) * 2011-01-10 2013-08-21 哈尔滨空调股份有限公司 石化换热空冷器翅片管定位条装置
CN102109293A (zh) * 2011-01-10 2011-06-29 哈尔滨空调股份有限公司 石化换热空冷器翅片管定位条装置
US20190041140A1 (en) * 2015-08-25 2019-02-07 Valeo Systemes Thermiques Heat exchanger
CN111256393A (zh) * 2018-11-30 2020-06-09 杭州三花研究院有限公司 翅片及换热器

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