EP3399268A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

Info

Publication number
EP3399268A1
EP3399268A1 EP15912102.9A EP15912102A EP3399268A1 EP 3399268 A1 EP3399268 A1 EP 3399268A1 EP 15912102 A EP15912102 A EP 15912102A EP 3399268 A1 EP3399268 A1 EP 3399268A1
Authority
EP
European Patent Office
Prior art keywords
wave
concaves
convexes
lines
shapes
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Withdrawn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
EP15912102.9A
Other languages
German (de)
English (en)
Other versions
EP3399268A4 (fr
Inventor
Jun Yanagimoto
Naoki Shikazono
Pascal ZEISE
Tsunehito Wake
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.)
University of Tokyo NUC
Waki Factory Inc
Original Assignee
University of Tokyo NUC
Waki Factory Inc
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 University of Tokyo NUC, Waki Factory Inc filed Critical University of Tokyo NUC
Publication of EP3399268A1 publication Critical patent/EP3399268A1/fr
Publication of EP3399268A4 publication Critical patent/EP3399268A4/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
    • 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
    • F28D9/0006—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 plate-like or laminated conduits being enclosed within a pressure vessel
    • 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
    • F28D9/0031—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 for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—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 for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • 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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal 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
    • F28F1/10—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
    • 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
    • F28F1/34—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 obliquely
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the 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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • 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
    • F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
    • 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
    • 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
    • F28F1/26—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 being integral with the 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
    • F28F1/422—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 with outside means integral with the tubular element and inside means integral with the tubular element

Definitions

  • the present disclosure relates to a heat exchanger and more specifically to a heat exchanger configured to perform heat exchange by flowing a fluid on the surface of a heat transfer member.
  • wave-like concaves/ convexes are provided on a flat surface of a flat tubular heat exchange tube, such that the wave-like concaves/ convexes have a predetermined angle in a range of 10 degrees to 60 degrees to the main flow of the air and that the wave-like concaves/ convexes have crests and troughs to be symmetrically folded back on folding lines at predetermined intervals along the main flow of the air (as described in, for example, Patent Literature 1).
  • the wave-like concaves/ convexes of this heat exchanger include crests (convexes) of continuing V shapes (or W shapes) and troughs (concaves) of continuing V shapes (or W shapes). Forming such wave-like concaves/ convexes causes a secondary flow along the surfaces of the wave-like concaves/ convexes to be generated, in addition to the main flow of the air and improves the heat exchange efficiency of the heat exchanger.
  • a heat exchanger of the present disclosure mainly aims to increase the yield of a heat transfer member at a fixed amplitude of wave-like concaves/ convexes formed on the heat transfer member and to increase the amplitude of the wave-like concaves/ convexes of the heat transfer member at a fixed yield of the heat transfer member.
  • the heat exchanger of the present disclosure employs the following configuration.
  • the present disclosure is directed to a heat exchanger configured to perform heat exchange by flowing a fluid on a surface of a heat transfer member.
  • the heat transfer member includes wave-like concaves/ convexes of smooth curve lines provided on the surface exposed to the fluid.
  • the wave-like concaves/ convexes are formed such that crest lines of continuing crests of wave and trough lines of continuing troughs of wave are formed in a shape of continuing V shapes in a horizontal direction, that bends of the V shapes form curve lines, and that a main flow of the fluid flows in a direction perpendicular to the V shapes.
  • the wave-like concaves/ convexes of smooth curve lines are formed on the surface of the heat transfer member exposed to the fluid, such that the crest lines of continuing the crests of wave and the trough lines of continuing the troughs of wave are formed in the shape of continuing the V shapes in the horizontal direction and that the bends of the V shapes form curve lines, i.e., in a shape of continuing two V shapes in the horizontal direction to form a W shape and further continuing the W shapes.
  • the wave-like concaves/ convexes are also formed such that the main flow of the fluid flows in the direction perpendicular to the V shapes (i.e., in the vertical direction).
  • the crest lines and the trough lines reduces the stress concentration at the bends.
  • this configuration increases the yield of the heat transfer member at a fixed amplitude of the wave-like concaves/ convexes of the heat transfer member and increases the amplitude of the wave-like concaves/ convexes of the heat transfer member at a fixed yield of the heat transfer member.
  • the wave-like concaves/ convexes of smooth curve lines are formed in the shape of continuing V shapes on the surface of the heat transfer member exposed to the fluid. This configuration enables a secondary flow along the surfaces of the wave-like concaves/ convexes of the heat transfer member to be generated, in addition to the main flow of the fluid and thereby improves the heat transfer efficiency of the heat exchanger.
  • the crest line and the trough line may be formed by alternately arranging linear portions and arc portions in a continuous manner.
  • This configuration increases the minimum radius of the bends, compared with a configuration that crest lines and trough lines are formed by sinusoidal curves.
  • this configuration increases the yield of the heat transfer member at a fixed amplitude of the wave-like concaves/ convexes of the heat transfer member and increases the amplitude of the wave-like concaves/ convexes of the heat transfer member at a fixed yield of the heat transfer member, compared with the configuration that the crest lines and the trough lines are formed by sinusoidal curves.
  • the arc portion may have a radius that is equal to or larger than one fifth a length of the linear portion.
  • the wave-like concaves/ convexes may be formed by alternately arranging straight lines and arcs in a continuous manner in cross section. This configuration increases the amplitude of the wave-like concaves/ convexes, compared with a configuration that the wave-like concaves/ convexes are formed by sinusoidal curves in cross section, and thereby further improves the heat transfer efficiency of the heat exchanger.
  • the heat transfer member may be a heat exchange tube formed as a flat hollow pipe, and the wave-like concaves/ convexes may be formed on a flat surface of the heat exchange tube. Accordingly, the present disclosure may be applied to a fin-less heat exchanger.
  • the heat transfer member may be a fin coupled with a heat exchange tube. Accordingly, the present disclosure may be applied to a corrugated fin heat exchanger or the like.
  • Fig. 1 is a diagram illustrating the schematic configuration of a heat exchanger 20 according to one embodiment of the present disclosure.
  • Fig. 2 is a side view illustrating the side view appearance of a plurality of heat exchange tubes 30 used for the heat exchanger 20 according to the embodiment.
  • Fig. 3 is a sectional view illustrating a cross section taken on a line A-A shown in Fig. 1 .
  • Fig. 4 is a diagram illustrating the schematic configuration of a heat exchanger 920 according to a comparative example.
  • the heat exchanger 20 of the embodiment includes a plurality of heat exchange tubes 30 arranged in parallel such that their longitudinal directions correspond to a vertical direction, and a shell 50 configured to place the plurality of heat exchange tubes 30 therein.
  • Each of the heat exchange tubes 30 is formed by press-forming a plate member made of a metal material (for example, stainless steel or aluminum) to be a flat hollow pipe in an approximately rectangular shape as a whole.
  • the respective heat exchange tubes 30 are stacked such that their longitudinal directions correspond to the vertical direction and are joined with one another at respective contact points by brazing.
  • An inflow port 31 formed at a vertically lower position near to a lower end of each heat exchange tube 30 is joined with an inflow port 31 of another heat exchange tube 30 adjacent thereto in the stack of the respective heat exchange tubes 30. This forms a connecting pipe 31a to make the respective inflow ports 31 communicate with one another.
  • an outflow port 32 formed at a vertically upper position near to an upper end of each heat exchange tube 30 is joined with an outflow port 32 of another heat exchange tube 30 adjacent thereto in the stack of the respective heat exchange tubes 30.
  • This configuration enables a first heat exchange medium such as water or oil to flow in from the inflow ports 31 of the respective heat exchange tubes 31, to flow vertically upward, and to flow out from the outflow ports 32 of the respective heat exchange tubes 30.
  • the shell 50 is formed from a plate member made of a metal material (for example, stainless steel or aluminum) like the respective heat exchange tubes 30 and is configured as a case in an approximately rectangular parallelepiped shape to place therein the plurality of heat exchange tubes 30 that are coupled with one another by means of the connecting pipes 31a and 32a.
  • a flow inlet 51 is formed in an upper portion of the shell 50, and a flow outlet 52 is formed in a lower portion of the shell 50.
  • This configuration enables a second heat exchange medium such as the air or exhaust gas to flow in from the flow inlet 51 formed in the upper portion of the shell 50, to pass through between the plurality of heat exchange tubes 30 and to flow out from the flow outlet 52 formed in the lower portion of the shell 50.
  • a plurality of wave-like concaves/ convexes 34 and 36 are formed by smooth curved surfaces on respective flat surfaces 33 and 35 of each of the heat exchange tubes 30.
  • Fig. 1 illustrates the wave-like concaves/ convexes 34 provided on one flat surface 33 out of the respective flat surfaces 33 and 35 of the heat exchange tube 30, and wave-like concaves/ convexes 36 provided on the other flat surface 35 (flat surface on a rear side in Fig. 1 ) are shown in parentheses.
  • the wave-like concaves/ convexes 34 and 36 are formed such that crest lines 34a and 36a of continuing crests of waves shown by a plurality of solid lines and trough lines 34b and 36b of continuing troughs of waves shown by a plurality of broken lines are arranged alternately in a shape of continuing V shapes (or W shapes) in a horizontal direction and that respective bends of the V shapes (or the W shapes) form curved lines.
  • the crest of wave herein means the position of 90 degrees in a sinusoidal waveform of upward waves and downward waves, i.e. , the position of a maximum value (crest of the upward wave).
  • the trough of wave here means the position of 270 degrees in the sinusoidal waveform of upward waves and downward waves, i.e. , the position of a minimum value (trough of the downward wave) .
  • the second heat exchange medium passing through between the plurality of heat exchange tubes 30 flows in from the flow inlet 51 formed in the upper portion of the shell 50 and flows out from the flow outlet 52 formed in the lower portion of the shell 50. Accordingly, the main flow of the second heat exchange medium intersects with slant line portions of the V shapes (or the W shapes) of the crest lines 34a or 36a and the trough lines 34b or 36b at angles of the slant line portions (angles in a range of 30 degrees to 60 degrees) .
  • each heat exchange tube 30 is configured such that the crest lines 34a and 36a and the trough lines 34b and 36b are formed in the shape of continuing V shapes (or W shapes) in the horizontal direction on the respective flat surfaces 33 and 35.
  • This configuration enables a secondary flow effective for heat exchange to be generated, in addition to the main flow of the second heat exchange medium.
  • the secondary flow herein means a flow along the surfaces of the wave-like concaves/ convexes 34 and 36 that is effective for heat exchange and is different from vortex flow and stirring flow.
  • the crest lines 34a and 36a and the trough lines 34b and 36b are formed such that linear portions 34c and 36c formed by straight lines and arc portions 34d and 36d formed by arcs are arranged alternately in a continuous manner.
  • the radius of the arc portions 34d and 36d is equal to or larger than one fifth the length of the linear portions 34c and 36c.
  • each heat exchange tube 930 configured such that wave-like concaves/ convexes 934 and 936 provided on respective flat surfaces 933 and 935 of each heat exchange tube 930 have crest lines 934a and 936a and trough lines 934b and 936b with bends formed in a shape of continuing sharply-angled V shapes (or W shapes) in the horizontal direction.
  • the stress concentration at the bends in the press-forming process increases with a decrease in minimum radius of the bends and also increases with an increase in amplitude of the wave-like concaves/ convexes 34 and 36.
  • An increase in the stress concentration increases the possibility of cracking.
  • the heat exchange tubes 30 of the embodiment have the higher yield in the press-forming process at a fixed amplitude of the wave-like concaves/ convexes 34 and 36 and have the larger amplitude of the wave-like concaves/ convexes 34 and 36 at a fixed yield in the press-forming process, compared with the heat exchange tubes 930 of the heat exchanger 920 of the comparative example.
  • the wave-like concaves/ convexes 34 and 36 of the embodiment are formed such that straight lines and arcs are alternately arranged in a continuous manner in cross section as shown in Fig. 3 . Tops and bottoms of the arcs respectively form the crest lines 34a and 36a and the trough lines 34b and 36b.
  • the configuration of the wave-like concaves/ convexes 34 and 36 by alternately arranging the straight lines and the arcs in a continuous manner in cross section increases the minimum radius of the crest and the trough of wave and accordingly increases the amplitude, compared with a configuration of sinusoidal curves in cross section.
  • the wave-like concaves/ convexes 34 provided on one flat surface 33 and the wave-like concaves/ convexes 36 provided on the other flat surface 35 are arranged parallel to each other, such that the crest lines 34a of the wave-like concaves/ convexes 34 on one flat surface 33 are aligned with the trough lines 36b of the wave-like concaves/ convexes 36 on the other flat surface 35 and that the trough lines 34b of the wave-like concaves/ convexes 34 on one flat surface 33 are aligned with the crest lines 36a of the wave-like concaves/ convexes 36 on the other flat surface 35.
  • the wave-like concaves/ convexes 34 and 36 provided on the respective flat surfaces 33 and 35 of each of the heat exchange tubes 30 are formed such that the crest lines 34a and 36a and the trough lines 34b and 36b are arranged alternately in the shape of continuing V shapes (or W shapes) in the horizontal direction and that the respective bends of the V shapes (or the W shapes) form the curved lines.
  • This configuration increases the yield in the press-forming process at the fixed amplitude of the wave-like concaves/ convexes 34 and 36 and increases the amplitude of the wave-like concaves/ convexes 34 and 36 at the fixed yield in the press-forming process, compared with the heat exchange tubes 930 of the heat exchanger 920 of the comparative example configured such that the crest lines 934a and 936a and the trough lines 934b and 936b have the bends formed in the shape of continuing sharply-angled V shapes (or W shapes) in the horizontal direction. Additionally, the crest lines 34a and 36a and the trough lines 34b and 36b are formed by alternately arranging the linear portions 34c and 36c and arc portions 34d and 36d in a continuous manner.
  • This configuration increases the minimum radius of the bends and reduces the stress concentration at the bends in the press-forming process, compared with the configuration that the crest lines and the trough lines are formed by sinusoidal curves. Accordingly, this configuration further increases the yield in the press-forming process at the fixed amplitude of the wave-like concaves/ convexes 34 and 36 and further increases the amplitude of the wave-like concaves/ convexes 34 and 36 at the fixed yield in the press-forming process.
  • the configuration that the crest lines 34a and 36a and the trough lines 34b and 36b are formed in the shape of continuing V shapes (or W shapes) in the horizontal direction on the respective flat surfaces 33 and 35 of the heat exchange tube 30.
  • This configuration enables the secondary flow effective for heat exchange to be generated, in addition to the main flow of the second heat exchange medium, on the surfaces of the wave-like concaves/ convexes 34 and 36 and provides the heat exchange having a high heat exchange efficiency.
  • the configuration of the wave-like concaves/ convexes 34 and 36 by alternately arranging the straight lines and the arcs in a continuous manner in cross section increases the minimum radius of the crest and the trough of wave and accordingly increases the amplitude, compared with the configuration of sinusoidal curves in cross section.
  • This configuration provides the heat exchanger having the higher heat exchange efficiency.
  • the wave-like concaves/ convexes 34 and 36 have the crest lines 34a and 36a and the trough lines 34b and 36b formed by alternately arranging the linear portions 34c and 36c and the arc portions 34d and 36d in a continuous manner.
  • the requirement is that the crest lines and the trough lines have curved V-shaped (or W-shaped) bends.
  • the crest lines and the trough lines may be formed by alternately arranging S-shaped curves and arcs in a continuous manner, or the crest lines and the trough lines may be formed by continuing sinusoidal curves.
  • the wave-like concaves/ convexes 34 and 36 are formed by alternately arranging the straight lines and the arcs in a continuous manner in cross section.
  • the wave-like concaves/ convexes 34 and 36 may be formed by alternately arranging S-shaped curves and arcs in a continuous manner in cross section or may be formed by continuing sinusoidal curves in cross section.
  • the first heat exchange medium and the second heat exchange medium form opposed flows.
  • the first heat exchange medium and the second heat exchange medium may form cross flows, or one or both of the first heat exchange medium and the second heat exchange medium may form a bypass flow.
  • the embodiment describes the application of the present disclosure to the heat exchange tubes in the fin-less heat exchanger 20.
  • the present disclosure may, however, be applied to a fin in a corrugated fin heat exchanger.
  • the fin may be configured such that wave-like concaves/ convexes of smooth curve lines are formed by alternately arranging crest lines of continuing V shapes (or W shapes) in the horizontal direction and trough lines of continuing V shapes (or W shapes) in the horizontal direction, that bends of the V shapes (or W shapes) form curved lines, and that the main flow of a fluid flows in the fin in an perpendicular direction of the V shapes.
  • the technique of the disclosure is preferably applicable to the manufacturing industries of the heat exchanger and so on.

Landscapes

  • 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)
EP15912102.9A 2015-12-28 2015-12-28 Échangeur de chaleur Withdrawn EP3399268A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/086562 WO2017115436A1 (fr) 2015-12-28 2015-12-28 Échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP3399268A1 true EP3399268A1 (fr) 2018-11-07
EP3399268A4 EP3399268A4 (fr) 2019-08-28

Family

ID=59224896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15912102.9A Withdrawn EP3399268A4 (fr) 2015-12-28 2015-12-28 Échangeur de chaleur

Country Status (5)

Country Link
US (1) US20180372425A1 (fr)
EP (1) EP3399268A4 (fr)
JP (1) JPWO2017115436A1 (fr)
CN (1) CN108700384A (fr)
WO (1) WO2017115436A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101749059B1 (ko) * 2015-09-04 2017-06-20 주식회사 경동나비엔 굴곡 플레이트 열교환기

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217845A (en) * 1961-02-06 1965-11-16 Crown Zellerbach Corp Rigidified corrugated structure
DE1751244A1 (de) * 1967-10-27 1971-06-09 Alfa Laval Ab Waermeaustauscher fuer den Waermeuebergang zwischen einer Fluessigkeit und einem Gas oder Luft
US3759323A (en) * 1971-11-18 1973-09-18 Caterpillar Tractor Co C-flow stacked plate heat exchanger
US4470453A (en) * 1982-08-19 1984-09-11 Avco Corporation Primary surface for compact heat exchangers
JPH0731029B2 (ja) * 1988-02-29 1995-04-10 株式会社日立製作所 傾斜波形フィン付き熱交換器
EP0697090B1 (fr) * 1994-03-03 1998-06-10 GEA LUFTKÜHLER GmbH Echangeur de chaleur a tubes a ailettes
JP3451160B2 (ja) * 1996-04-17 2003-09-29 株式会社 日立インダストリイズ プレ−ト式熱交換器
JP3423549B2 (ja) * 1996-11-22 2003-07-07 東洋ラジエーター株式会社 多板式熱交換器
US5907707A (en) * 1997-01-14 1999-05-25 International Business Machines Corporation Object model for Java
JPH10281677A (ja) * 1997-04-08 1998-10-23 Ishikawajima Harima Heavy Ind Co Ltd 熱交換器
JP2003251500A (ja) * 2002-03-01 2003-09-09 Kawasaki Thermal Engineering Co Ltd プレート順送成形装置およびそれに用いられる金型
CN101233380B (zh) * 2005-07-29 2012-11-07 国立大学法人东京大学 热交换器、使用该热交换器的空调装置及空气性质转化器
JP4756585B2 (ja) * 2005-09-09 2011-08-24 臼井国際産業株式会社 熱交換器用伝熱管
US7475719B2 (en) * 2006-12-14 2009-01-13 Evapco, Inc. High-frequency, low-amplitude corrugated fin for a heat exchanger coil assembly
CN101589285B (zh) * 2007-01-25 2011-10-26 国立大学法人东京大学 热交换器
JP5082120B2 (ja) * 2007-03-23 2012-11-28 国立大学法人 東京大学 熱交換器
CN201569352U (zh) * 2009-07-30 2010-09-01 江苏工业学院 全焊接式双波形错流式板式换热器板束
JP2011091301A (ja) * 2009-10-26 2011-05-06 Toyota Industries Corp 液冷式冷却装置
JP5620685B2 (ja) * 2010-02-02 2014-11-05 国立大学法人東京大学 熱交換器
JP5834324B2 (ja) * 2011-08-03 2015-12-16 国立大学法人 東京大学 コルゲートフィン型熱交換器
US9080819B2 (en) * 2011-10-05 2015-07-14 T.Rad Co., Ltd. Folded heat exchanger with V-shaped convex portions
JP2013087977A (ja) * 2011-10-14 2013-05-13 Panasonic Corp フィンチューブ型熱交換器
JP5921413B2 (ja) * 2012-10-30 2016-05-24 カルソニックカンセイ株式会社 熱交換器用チューブ
JP6206976B2 (ja) * 2012-11-15 2017-10-04 国立大学法人 東京大学 熱交換器
JP6206975B2 (ja) * 2012-11-15 2017-10-04 国立大学法人 東京大学 熱交換器
US9724746B2 (en) * 2013-03-14 2017-08-08 Pratt & Whitney Canada Corp. Aerodynamically active stiffening feature for gas turbine recuperator

Also Published As

Publication number Publication date
EP3399268A4 (fr) 2019-08-28
JPWO2017115436A1 (ja) 2018-10-18
CN108700384A (zh) 2018-10-23
US20180372425A1 (en) 2018-12-27
WO2017115436A1 (fr) 2017-07-06

Similar Documents

Publication Publication Date Title
JP6942815B2 (ja) 異なる温度の流体の熱交換用熱交換器
US8235098B2 (en) Heat exchanger flat tube with oblique elongate dimples
US20200166293A1 (en) Weaved cross-flow heat exchanger and method of forming a heat exchanger
US8656986B2 (en) Fin, heat exchanger and heat exchanger assembly
JP5884055B2 (ja) 熱交換器および熱交換器用オフセットフィン
JP4827905B2 (ja) プレート式熱交換器、及びこれを搭載した空気調和機
JP5579428B2 (ja) 排気ガス冷却器
US20130277029A1 (en) Heat Transfer Surfaces With Flanged Apertures
US11448466B2 (en) Cross-flow heat exchanger
US7059397B2 (en) Heat exchanger with brazed plates
JP2006125767A (ja) 熱交換器
JP2012112645A (ja) 熱交換器
KR20170063543A (ko) 열교환기용 코루게이티드 핀
US20130032320A1 (en) Heat exchanger
US4336838A (en) Heat exchange turbulator
JP6206975B2 (ja) 熱交換器
JP2008096048A (ja) 排気ガス用熱交換器のインナーフィン
JP6206976B2 (ja) 熱交換器
EP3399268A1 (fr) Échangeur de chaleur
JP2020085340A5 (fr)
JP2006170549A (ja) 熱交換器
CN109312915B (zh) 用于锅炉管布置的翅片和包括这种翅片的组件
JP3226015U (ja) 熱交換器
US20130213616A1 (en) Heat exchanger incorporating out-of-plane features
JP6567536B2 (ja) 熱交換器用コルゲートフィン

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180628

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20190725

RIC1 Information provided on ipc code assigned before grant

Ipc: F28D 9/00 20060101ALI20190719BHEP

Ipc: F28F 1/26 20060101ALI20190719BHEP

Ipc: F28F 1/12 20060101ALI20190719BHEP

Ipc: F28F 1/08 20060101ALI20190719BHEP

Ipc: F28F 1/42 20060101ALI20190719BHEP

Ipc: F28F 1/06 20060101ALI20190719BHEP

Ipc: F28D 1/053 20060101AFI20190719BHEP

Ipc: F28F 3/04 20060101ALI20190719BHEP

Ipc: F28F 1/34 20060101ALI20190719BHEP

Ipc: F28F 1/04 20060101ALI20190719BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200224

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20200605