WO2019203115A1 - Tube plat à trous multiples, échangeur de chaleur et procédé de fabrication d'échangeur de chaleur - Google Patents

Tube plat à trous multiples, échangeur de chaleur et procédé de fabrication d'échangeur de chaleur Download PDF

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Publication number
WO2019203115A1
WO2019203115A1 PCT/JP2019/015797 JP2019015797W WO2019203115A1 WO 2019203115 A1 WO2019203115 A1 WO 2019203115A1 JP 2019015797 W JP2019015797 W JP 2019015797W WO 2019203115 A1 WO2019203115 A1 WO 2019203115A1
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WO
WIPO (PCT)
Prior art keywords
flat multi
tube
hole
hole tube
heat exchanger
Prior art date
Application number
PCT/JP2019/015797
Other languages
English (en)
Japanese (ja)
Inventor
裕斗 淺井
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Publication of WO2019203115A1 publication Critical patent/WO2019203115A1/fr

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    • 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
    • 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
    • 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
    • F28F1/24—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 and extending transversely
    • F28F1/32—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 and extending transversely the means having portions engaging further tubular elements

Definitions

  • the present invention relates to a flat multi-hole tube, a heat exchanger including the flat multi-hole tube, and a manufacturing method thereof.
  • Patent Document 1 discloses a heat exchanger configured by inserting a plurality of flat multi-hole tubes through a fin plate row.
  • the flat multi-hole tube is one of the components constituting the heat exchanger, and is a tube material including a flat outer tube and a plurality of partition walls that divide the inside of the outer tube into a plurality of flow paths.
  • the fin plate array is a component part of a heat exchanger that is configured by stacking and arranging a plurality of fin plates at intervals.
  • a flat multi-hole tube is inserted into an insertion hole formed in a fin plate row, and then an internal pressure is applied to expand a cross-sectional shape. That is, the flat multi-hole tube is expanded after being inserted into the fin plate row. As a result, the flat multi-hole tube is in close contact with the fin plate row and fixed to the fin plate row.
  • Patent Document 1 In the manufacturing method described in Patent Document 1, it is intended to obtain a desired cross-sectional shape after tube expansion processing by straightly extending a partition wall that has been bent before tube expansion processing.
  • a partition wall that has been bent before tube expansion processing.
  • deformation of the partition wall is restricted by the rigidity of the outer tube, and the partition wall does not deform as intended.
  • a desired cross-sectional shape cannot be obtained after the tube expansion process, and a gap is generated between the flat multi-hole tube and the fin plate row, resulting in a problem that heat transfer performance is deteriorated.
  • an object of the present invention is to provide a flat multi-hole tube in which a desired cross-sectional shape is formed after tube expansion processing and is in close contact with the fin plate row without a gap.
  • an object of the present invention is to provide a heat exchanger having a high heat transfer performance with improved adhesion between the flat multi-hole tube and the fin plate row, and a method for manufacturing the heat exchanger.
  • a flat multi-hole tube includes a flat outer tube and a plurality of partition walls that divide the inside of the outer tube into a plurality of flow paths.
  • the width of the flow path at both ends is made larger than the width of the flow path at the center of the outer tube.
  • the rigidity of the outer shell of each flow path is adjusted, and after the tube expansion process A desired cross-sectional shape can be obtained.
  • the adhesion between the flat multi-hole tube and the fin plate row is improved, and the heat transfer performance between the flat multi-hole tube and the fin plate row is improved.
  • the figure which shows the cross-sectional shape before pipe expansion of the flat multi-hole pipe which concerns on the 1st Embodiment of this invention The figure which shows the cross-sectional shape after the expansion of the flat multi-hole tube which concerns on the 1st Embodiment of this invention
  • the figure which shows the cross-sectional shape before the expansion of the flat multi-hole pipe which concerns on the modification of the 1st Embodiment of this invention The figure which shows the cross-sectional shape before pipe expansion of the flat multi-hole pipe which concerns on the 2nd Embodiment of this invention.
  • the figure which shows the cross-sectional shape after the expansion of the flat multi-hole pipe which concerns on the 2nd Embodiment of this invention The figure which shows the cross-sectional shape before pipe expansion of the flat multi-hole pipe which concerns on the 2nd Embodiment of this invention.
  • Sectional drawing which shows the state which penetrated the flat multi-hole pipe which concerns on the 2nd Embodiment of this invention to the fin plate.
  • Sectional drawing which shows the state which penetrated the flat multi-hole pipe which concerns on the 2nd Embodiment of this invention through a fin plate, and was expanded after that The figure which shows the cross-sectional shape before pipe expansion of the flat multi-hole pipe which concerns on the 3rd Embodiment of this invention.
  • Sectional drawing which shows the state which penetrated the flat multi-hole tube which concerns on the 3rd Embodiment of this invention to the fin plate.
  • FIG. 1A and 1B are views showing a cross-sectional shape of the flat multi-hole tube 1 according to the first embodiment of the present invention
  • FIG. 1A is a cross-sectional view showing a cross-sectional shape of the flat multi-hole tube 1 before tube expansion
  • FIG. 1B is a cross-sectional view showing the shape of the flat multi-hole tube 1 after tube expansion.
  • the flat multi-hole tube 1 is a tube material formed by extruding an aluminum alloy. As shown in FIG. 1A, the flat multi-hole tube 1 includes a flat outer tube 2 and six partition walls 4 that divide the inside of the outer tube 2 into seven flow paths 3a to 3g.
  • the outer tube 2 and the partition 4 are made of the same material. Further, the plate thickness of the outer tube 2 and the partition wall 4 and the height of the partition wall 4 are the same in all the parts.
  • the partition 4 is bent at the center of its height in the state shown in FIG. 1A, that is, in the state before being expanded. In FIG. 1A, the partition 4 located to the right of the flow path 3d is bent so that the bending point is directed to the right, and the partition 4 located to the left of the flow path 3d is bent so that the bending point is directed to the left.
  • the flat multi-hole tube 1 is inserted into a fin plate row provided in the heat exchanger.
  • the flat multi-hole tube 1 is subjected to tube expansion after being inserted through the fin plate row.
  • the pipe expansion process is performed by injecting a fluid into the flat multi-hole tube 1 and pressurizing the fluid. The details of the heat exchanger manufacturing process and tube expansion process will be described later.
  • the widths Wa and Wg of the flow paths 3 a and 3 g arranged at the end of the flat multi-hole tube 1 are arranged at the center of the flat multi-hole tube 1.
  • the width Wd of the flow path 3d is larger.
  • the widths Wb, Wc, We, Wf of the flow paths 3b, 3c, 3e, 3f arranged in the middle between the end portion and the central portion of the flat multi-hole tube 1 are arranged in the central portion of the flat multi-hole tube 1. It is made smaller than the flow path 3d.
  • the widths Wa to Wg of the flow paths 3a to 3g mean the inner lateral dimensions of the flow paths 3a to 3g.
  • the upper surface and the lower surface of the flat multi-hole tube 1 are kept flat and are in a mutually parallel state.
  • the outer tube 2 of the flat multi-hole tube 1 starts to be bent near the middle point between the width Wa and the width Wg, and the height of the flat multi-hole tube 1 is gradually reduced as it approaches the outer end. Yes.
  • the upper surface and the lower surface of the flat multi-hole tube 1 are joined.
  • the flat multi-hole tube 1 is in a state in which the upper surface and the lower surface are flat and parallel to each other as shown in FIG. That is, the flat multi-hole tube 1 according to the first embodiment maintains a flat cross-sectional shape even after the tube expansion process.
  • the cross-sectional shape of the flat multi-hole tube 1 before the pipe expansion process is not limited to that shown in FIG. 1A. As shown in FIG.
  • the cross-sectional shape of the flat multi-hole tube 1 before the pipe expansion process is such that the width Wd of the flow path 3d located at the center is the narrowest. Also good. Also in this case, a flat cross-sectional shape is maintained after the tube expansion process.
  • the width Wd of the flow path 3d disposed at the center of the flat multi-hole tube 1 is equal to the width Wa of the flow paths 3a and 3g disposed at the ends. , Larger than Wg.
  • the width Wd of the flow path 3d disposed at the center of the flat multi-hole tube 1 is equal to the flow paths 3b, 3c, 3e, It is larger than the width Wb, Wc, We, Wf of 3f.
  • the outline of the flow path 3d arranged at the center of the flat multi-hole tube 1 has a lower rigidity than other parts. That is, the outline of the flow path 3d is more easily deformed than other parts.
  • the flat multi-hole tube 1 As shown in FIG. 3A, the flat multi-hole tube 1 according to the third embodiment includes five partition walls 4 that divide the inside of the outer tube 2 into six flow paths 3a to 3f. 3A, the width Wf of the flow path 3f located at the right end of the flat multi-hole tube 1 is the largest. Further, the widths We to Wa of the flow paths 3e to 3a are sequentially reduced toward the left end of the flat multi-hole tube 1. As a result, the rigidity of the outline of the flow path 3f located at the right end of the flat multi-hole tube 1 is minimized, and the rigidity of the outline increases in the order of the flow paths 3e to 3a.
  • the rigidity of the outline of the flow path 3a located at the left end of the flat multi-hole tube 1 is maximized. That is, the flow path 3f is most easily deformed, and is difficult to deform in the order of the flow paths 3e to 3a. Therefore, the flow path 3a is most difficult to deform.
  • the flow path 3f is deformed to the greatest extent.
  • the deformation amounts of the flow paths 3e to 3a are sequentially reduced.
  • the cross-sectional shape of the flat multi-hole tube 1 is the thickest at the right end and becomes thinner toward the left end.
  • the heat exchange medium that has passed through the flat multi-hole tube 1 is collected in the header 14 and returns to the external device from the header 14. In addition, air flowing from the outside flows through the fin plate row 12. Then, heat is exchanged between the heat exchange medium passing through the flat multi-hole tube 1 and the air flowing between the fin plate rows 12.
  • the flat multi-hole tube 1 is inserted into the fin plate row 12 as shown in FIG. 6A.
  • the cross-sectional shape of the flat multi-hole tube 1 is smaller than the cross-sectional shape of the through hole 15 as shown in FIG. 6B. Therefore, insertion of the flat multi-hole tube 1 into the through hole 15 is easy.
  • the tube expansion process may be performed individually for each flat multi-hole tube 1, but before the tube expansion process, the header 13 and the header 14 are connected, and all the flat multi-hole tubes 1 are collectively expanded. You may do it. That is, the pressurized fluid may be injected into all the flat multi-hole pipes 1 via the header 13 and pressure may be applied between the header 13 and the header 14. Moreover, you may braze between the flat multi-hole pipe 1 and the fin plate 11 after completion of a pipe expansion process. When brazing is performed, the contact thermal resistance is further reduced, so that the heat transfer performance is further improved.
  • the flat multi-hole tube 1 is not limited to the one attached horizontally to the fin plate row 12, that is, the flat multi-hole tube 1 having the same height at both ends. As shown in FIG. 9, the end 1A of the flat multi-hole tube 1 on the windward side of the air flow path passing through the fin plate row 12 is higher than the end 1B of the flat multi-hole tube 1 on the leeward side. You may do it. Thus, if the flat multi-hole tube 1 is inclined and the leeward side end 1B is lowered, the dew condensation 18 generated on the outer surface of the flat multi-hole tube 1 is discharged by gravity or by gravity and wind pressure. can do.
  • the example in which the through-hole 15 is formed in the fin plate 11 and the flat multi-hole tube 1 is inserted into the through-hole 15 is shown. It is not limited to what is provided. Instead of the through hole 15, as shown in FIG. 10, a slit 19 may be provided in the fin plate 11, and the flat multi-hole tube 1 may be fitted into the slit 19. Thus, if the slit 19 is provided instead of the through-hole 15, the attachment to the fin plate row 12 of the flat multi-hole tube 1 is facilitated.
  • the cross-sectional shape of the flat multi-hole tube 1 after the tube expansion processing is thickest at the center portion and becomes thinner toward both ends.
  • the width Wf of the flow channel 3f at the right end of the outer tube 2 is the largest in cross section, and the widths We to Wa of the flow channels 3e to 3a are directed to the left end. Accordingly, the cross-sectional shape of the flat multi-hole tube 1 after the tube expansion processing becomes thickest at the right end portion and becomes thinner toward the left end portion.
  • the cross-sectional shape of the flat multi-hole tube 1 after the tube expansion processing can be made a desired shape.
  • the cross-sectional shape of the flat multi-hole tube 1 after the tube expansion process can be changed to a desired shape, the adhesion between the flat multi-hole tube 1 and the fin plate row 12 is improved, and the flat multi-hole tube 1 and the fin plate row 12 are improved.
  • the thermal conductivity during is improved. As a result, the efficiency of the heat exchanger is improved.
  • the specific shape and structure of the heat exchanger 10 shown in the above embodiment are examples, and the technical scope of the present invention is not limited by these.
  • the number of flat multi-hole tubes 1 provided in the heat exchanger 10 and the number of fin plates 11 are not limited to those illustrated.
  • the fin collar 16 is an optional component.
  • the fin plate 11 may not include the fin collar 16.
  • the use of the heat exchanger 10 is not particularly limited.
  • the heat exchanger 10 may be used as an evaporator or a condenser, or may be used as a cooler or a heater.
  • the present invention can be suitably used as a flat multi-hole tube constituting a heat exchanger, a heat exchanger provided with the flat multi-hole tube, and a method of manufacturing the heat exchanger.

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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)

Abstract

Le but de la présente invention est de fournir un tube plat à trous multiples dans lequel une forme de section transversale souhaitée est formée après un processus d'expansion de tube, et qui est étroitement lié à une rangée de plaques à ailettes sans aucun espace entre celles-ci; et fournir un échangeur de chaleur dans lequel une liaison étroite est améliorée et une performance de transfert de chaleur est élevée entre le tube plat à trous multiples et la plaque à ailettes, ainsi qu'un procédé de fabrication de l'échangeur de chaleur. Un tube plat à trous multiples (1) est pourvu d'un tube externe plat (2), et d'une pluralité de parois de barrière (4) qui divisent l'intérieur du tube externe (2) en une pluralité de chemins d'écoulement (3a-3g), la largeur (Wa, Wg) des chemins d'écoulement (3a, 3g) aux deux extrémités du tube externe (2) dans une section transversale étant supérieure à la largeur (Wd) du chemin d'écoulement (3d) au centre du tube externe (2).
PCT/JP2019/015797 2018-04-19 2019-04-11 Tube plat à trous multiples, échangeur de chaleur et procédé de fabrication d'échangeur de chaleur WO2019203115A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018080334 2018-04-19
JP2018-080334 2018-04-19

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WO2019203115A1 true WO2019203115A1 (fr) 2019-10-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020041789A (ja) * 2018-09-13 2020-03-19 日立ジョンソンコントロールズ空調株式会社 熱交換器、拡管部材、および熱交換器を備えた空気調和機
CN114440687A (zh) * 2022-01-28 2022-05-06 广东美的暖通设备有限公司 换热器及其制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11320005A (ja) * 1998-05-13 1999-11-24 Showa Alum Corp 熱交換器及びその製造方法
JP2003148889A (ja) * 2001-11-09 2003-05-21 Gac Corp 熱交換器およびその製造方法
JP2004353954A (ja) * 2003-05-29 2004-12-16 Denso Corp 熱交換器
JP2005083733A (ja) * 2003-09-04 2005-03-31 Lg Electronics Inc フラットチューブ型熱交換器
JP2005127597A (ja) * 2003-10-23 2005-05-19 Matsushita Electric Ind Co Ltd 熱交換器
US20120031601A1 (en) * 2010-08-03 2012-02-09 Johnson Controls Technology Company Multichannel tubes with deformable webs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11320005A (ja) * 1998-05-13 1999-11-24 Showa Alum Corp 熱交換器及びその製造方法
JP2003148889A (ja) * 2001-11-09 2003-05-21 Gac Corp 熱交換器およびその製造方法
JP2004353954A (ja) * 2003-05-29 2004-12-16 Denso Corp 熱交換器
JP2005083733A (ja) * 2003-09-04 2005-03-31 Lg Electronics Inc フラットチューブ型熱交換器
JP2005127597A (ja) * 2003-10-23 2005-05-19 Matsushita Electric Ind Co Ltd 熱交換器
US20120031601A1 (en) * 2010-08-03 2012-02-09 Johnson Controls Technology Company Multichannel tubes with deformable webs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020041789A (ja) * 2018-09-13 2020-03-19 日立ジョンソンコントロールズ空調株式会社 熱交換器、拡管部材、および熱交換器を備えた空気調和機
CN114440687A (zh) * 2022-01-28 2022-05-06 广东美的暖通设备有限公司 换热器及其制造方法

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