EP3411649B1 - Arrowhead fin for heat exchange tubing - Google Patents
Arrowhead fin for heat exchange tubing Download PDFInfo
- Publication number
- EP3411649B1 EP3411649B1 EP17748341.9A EP17748341A EP3411649B1 EP 3411649 B1 EP3411649 B1 EP 3411649B1 EP 17748341 A EP17748341 A EP 17748341A EP 3411649 B1 EP3411649 B1 EP 3411649B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fin
- arrowhead
- pressed
- shapes
- pair
- 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.)
- Active
Links
- 238000003825 pressing Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
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
- F28F1/10—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
- F28F1/14—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 longitudinally
- F28F1/16—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 longitudinally the means being integral with the element, e.g. formed by extrusion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
-
- 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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
-
- 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
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
Definitions
- This invention relates generally to tube fins for large scale field-erected air cooled industrial steam condensers or dry coolers/condensers.
- the current finned tube used in most large scale field erected air cooled industrial steam condensers uses a flattened tube that is approximately 11 meters long by 200 mm wide (also referred to as "air travel length") with semi-circular leading and trailing edges, and 18.7mm external height (perpendicular to the air travel length).
- Tube wall thickness is 1.35mm.
- Fins are brazed to both flat sides of each tube and have a length that extends perpendicular to the longitudinal axis of the tube.
- the fins are usually 18.5 mm tall, spaced at 11 fins per inch.
- the fin surface has a wavy pattern to enhance heat transfer and help fin stiffness.
- the standard spacing between tubes, center to center, is 57.2mm.
- the tubes themselves make up approximately one third of the cross sectional face area (perpendicular to the air flow direction); whereas the fins make up nearly two thirds of the cross section face area. There is a small space between adjacent fin tips of 1.5mm.
- maximum steam velocity through the tubes can typically be as high as 28 mps, and more typically 23 to 25 mps.
- the invention is defined in claim 1.
- the present invention is a new fin design to improve heat transfer between the fluid in the tube and the fluid (air) passing over/through the fins.
- the fin may be generally planar and in direct contact with a flattened ACC tube.
- the internal dimension of the tube in the direction parallel to the flat sides (also call the air travel length) may be typically 200 mm.
- the external tube height (perpendicular to the air travel length) may be typically 18.7 mm, although fins of the present invention may be used with heat exchange tubes of any dimension.
- the fluid to be cooled flows in the tube, which may be perpendicular to the fin plane. Cooling air may flow parallel to the plane of the flat side of the tube and perpendicular to the longitudinal axis of the tube.
- a plurality of arrowhead shapes are pressed into or embossed onto each fin.
- the arrowhead shape is defined by two intersecting wedge sections.
- the shapes of the volume described by the embossed metal surface and the plane of the flat fin may be characterized as similar in form to a prism.
- the wedge sections are triangular in cross section normal to their length.
- the two intersecting wedge sections form a pointed end at the leading edge of the arrowhead shape and a forked end at the trailing edge of the arrowhead shape.
- each wedge in a direction perpendicular to the plane of the fin is 50% or approximately 50% of the distance between adjacent fins.
- the leading and trailing edges of each wedge are preferably oriented at 30° or approximately 30° from the air flow direction/longitudinal axis of the fin.
- the top wedge section (relative to the location of the tube) forming an arrowhead shape has leading and trailing edges oriented 30° up, and the lower wedge section for each arrowhead shape has leading and trailing edges oriented 30° down.
- the pressed arrowhead shapes according to the invention are grouped into pairs, where a first arrowhead shape of a pair is immediately upstream of the second arrowhead shape in the pair.
- one of the arrowheads in a pair is pressed as a positive relative to the fin plane and the other of the pair is pressed as a negative relative to the fin plane.
- the arrowhead pairs are placed in rows parallel to the air flow direction and spaced normal to the air flow direction one to two times the fin width dimension.
- Arrowhead pairs in one row are preferably staggered relative to the arrowhead pairs in the adjacent row along the fin in the air flow direction. So the first arrowhead in the second row is spaced down the air flow direction along the fin by half of the space between arrowhead pairs along the rows.
- the arrowhead pairs in a single row are spaced in the direction of air flow according to a multiple of the fin spacing, preferably 6 to 12 times the fin spacing and more preferably 8 or 9 times the fin spacing.
- the dimensions of the arrowheads are a function of the fin height.
- all arrowhead pressings on a given fin point in the same direction with respect to the flow direction. With each subsequent fin, the arrowhead pressings alternate between pointing in the flow direction and against the flow direction.
- a plurality of arrowhead shapes 2 are pressed into or embossed onto each fin 4.
- Each arrowhead shape 2 is defined by two intersecting wedge sections 6a, 6b.
- the shapes of the volume described by the embossed metal surface and the plane of the flat fin may be characterized as similar in form to a prism.
- the wedge sections 6a, 6b are triangular in cross section normal to their length.
- the two intersecting wedge sections 6a, 6b form a pointed end 8 at the leading end of the arrowhead shape 2 and a forked end 10 at the trailing end of the arrowhead shape 2.
- the pressed arrowhead shapes 2 may be grouped into pairs 16, where a first arrowhead shape 16a of a pair is immediately upstream of the second arrowhead shape 16b in the pair.
- the pointed end of the second arrowhead shape 16b may be nested into the back end (or "forked end") of the first arrowhead shape 16a.
- Fig. 1 shows one of the arrowheads in a pair pressed as a positive relative to the fin plane (out of the fin plane) and the other of the pair pressed as a negative relative to the fin plane (into the fin plane).
- Figs. 1 , 4 , 10 and 11 show the arrowhead pairs placed in two rows parallel to the air flow direction.
- the rows are spaced from one-another normal to the air flow direction one to two times the fin width dimension.
- the arrowhead pairs in one row are shown staggered relative to the arrowhead pairs in the adjacent row along the fin in the air flow direction so that first arrowhead in the second row is spaced down the air flow direction along the fin by half of the space between arrowhead pairs along the rows.
- the arrowhead pairs in a single row are shown spaced in the direction of air flow according to a multiple of the fin spacing, preferably 6 to 12 times the fin spacing and more preferably 8 or 9 times the fin spacing.
- the dimensions of the arrowheads are preferably a function of the fin height.
- All arrowhead pressings on a given fin point in the same direction with respect to the flow direction. With each subsequent fin, the arrowhead pressings alternate between pointing in the flow direction and against the flow direction.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
- This invention relates generally to tube fins for large scale field-erected air cooled industrial steam condensers or dry coolers/condensers.
- The current finned tube used in most large scale field erected air cooled industrial steam condensers (ACC) uses a flattened tube that is approximately 11 meters long by 200 mm wide (also referred to as "air travel length") with semi-circular leading and trailing edges, and 18.7mm external height (perpendicular to the air travel length). Tube wall thickness is 1.35mm. Fins are brazed to both flat sides of each tube and have a length that extends perpendicular to the longitudinal axis of the tube. The fins are usually 18.5 mm tall, spaced at 11 fins per inch. The fin surface has a wavy pattern to enhance heat transfer and help fin stiffness. The standard spacing between tubes, center to center, is 57.2mm. The tubes themselves make up approximately one third of the cross sectional face area (perpendicular to the air flow direction); whereas the fins make up nearly two thirds of the cross section face area. There is a small space between adjacent fin tips of 1.5mm. For summer ambient conditions, maximum steam velocity through the tubes can typically be as high as 28 mps, and more typically 23 to 25 mps.
- The following disclose known heat exchanger arrangements;
US4984626 US4513813 ,JPH1089873 US2002/074105 ,US2004/194936 ,US4470452 ,US337741 ,US5111876 ,US2677394 ,US2013/087318 ,US4817709 ,US2012/024511 , andUS2012/318485 . - The invention is defined in
claim 1. The present invention is a new fin design to improve heat transfer between the fluid in the tube and the fluid (air) passing over/through the fins. The fin may be generally planar and in direct contact with a flattened ACC tube. The internal dimension of the tube in the direction parallel to the flat sides (also call the air travel length) may be typically 200 mm. The external tube height (perpendicular to the air travel length) may be typically 18.7 mm, although fins of the present invention may be used with heat exchange tubes of any dimension. The fluid to be cooled flows in the tube, which may be perpendicular to the fin plane. Cooling air may flow parallel to the plane of the flat side of the tube and perpendicular to the longitudinal axis of the tube. - According to an embodiment of the invention, a plurality of arrowhead shapes are pressed into or embossed onto each fin. According to a preferred embodiment, the arrowhead shape is defined by two intersecting wedge sections. The shapes of the volume described by the embossed metal surface and the plane of the flat fin may be characterized as similar in form to a prism. According to a preferred embodiment, the wedge sections are triangular in cross section normal to their length. According to another preferred embodiment, the two intersecting wedge sections form a pointed end at the leading edge of the arrowhead shape and a forked end at the trailing edge of the arrowhead shape.
- According to a more preferred embodiment, the height of each wedge (in a direction perpendicular to the plane of the fin is 50% or approximately 50% of the distance between adjacent fins. The leading and trailing edges of each wedge are preferably oriented at 30° or approximately 30° from the air flow direction/longitudinal axis of the fin. The top wedge section (relative to the location of the tube) forming an arrowhead shape has leading and trailing edges oriented 30° up, and the lower wedge section for each arrowhead shape has leading and trailing edges oriented 30° down.
- According to a further preferred embodiment the pressed arrowhead shapes according to the invention are grouped into pairs, where a first arrowhead shape of a pair is immediately upstream of the second arrowhead shape in the pair. According to a further preferred embodiment one of the arrowheads in a pair is pressed as a positive relative to the fin plane and the other of the pair is pressed as a negative relative to the fin plane.
- According to another embodiment of the invention, the arrowhead pairs are placed in rows parallel to the air flow direction and spaced normal to the air flow direction one to two times the fin width dimension. Arrowhead pairs in one row are preferably staggered relative to the arrowhead pairs in the adjacent row along the fin in the air flow direction. So the first arrowhead in the second row is spaced down the air flow direction along the fin by half of the space between arrowhead pairs along the rows.
- According to another embodiment of the invention, the arrowhead pairs in a single row are spaced in the direction of air flow according to a multiple of the fin spacing, preferably 6 to 12 times the fin spacing and more preferably 8 or 9 times the fin spacing.
- According to another embodiment of the invention, the dimensions of the arrowheads are a function of the fin height. The arrowhead width (normal to the flow in the plane of the fin) is preferably nominally 2 to 3 times fin spacing (0.209"=2.3∗0.091"). The arrowhead length (parallel to the flow) is preferably 5 to 8 times the fin spacing (.091∗6.5=0.591) (0.41+0.181=) 0.591.
- According to another embodiment of the invention, all arrowhead pressings on a given fin point in the same direction with respect to the flow direction. With each subsequent fin, the arrowhead pressings alternate between pointing in the flow direction and against the flow direction.
-
-
Figure 1 is perspective view of a fin according to an embodiment of the invention. -
Figure 2 is a side view of a fin according to an embodiment of the invention -
Figure 3 is a set of engineering drawings showing an embodiment of the invention. -
Figure 4 is an excerpt fromFigure 3 showing a side view of an embodiment of the invention. -
Figure 5 is an excerpt fromFigure 3 showing an end view of an embodiment of the invention. -
Figure 6 is an excerpt fromFigure 3 showing a cross-sectional view of an embodiment of the invention along line A-A inFigure 3 . -
Figure 7 is an excerpt fromFigure 3 showing a cross-sectional view of an embodiment of the invention along line B-B inFigure 3 . -
Figure 8 is an excerpt fromFigure 3 showing Detail E fromFigure 3 . -
Figure 9 is an excerpt fromFigure 3 showing a cross-sectional view of an embodiment of the invention along line F-F inFigure 3 . -
Figure 10 is a side view according to another embodiment of the invention. -
Figure 11 is a perspective view according to another embodiment of the invention. - Referring to the Figures, and in particular,
Figures 1 ,2 ,4 ,10 and11 , a plurality ofarrowhead shapes 2 are pressed into or embossed onto eachfin 4. Eacharrowhead shape 2 is defined by two intersectingwedge sections wedge sections wedge sections pointed end 8 at the leading end of thearrowhead shape 2 and a forkedend 10 at the trailing end of thearrowhead shape 2. - The height of each
wedge Figs. 5-7 and9 ). The leadingedges 12 andtrailing edges 14 of each wedge are preferably oriented at 30° or approximately 30° from the air flow direction/longitudinal axis of thefin 4. Thetop wedge section 6a (relative to the location of the tube) forming anarrowhead shape 2 has leading and trailing edges oriented 30° up, and thelower wedge section 6b for eacharrowhead shape 2 has leading and trailingedges - Referring in particular to
Figs. 1 and2 , the pressedarrowhead shapes 2 may be grouped intopairs 16, where a first arrowhead shape 16a of a pair is immediately upstream of thesecond arrowhead shape 16b in the pair. The pointed end of thesecond arrowhead shape 16b may be nested into the back end (or "forked end") of thefirst arrowhead shape 16a. Consistent with a preferred embodiment of the invention,Fig. 1 shows one of the arrowheads in a pair pressed as a positive relative to the fin plane (out of the fin plane) and the other of the pair pressed as a negative relative to the fin plane (into the fin plane). -
Figs. 1 ,4 ,10 and11 show the arrowhead pairs placed in two rows parallel to the air flow direction. The rows are spaced from one-another normal to the air flow direction one to two times the fin width dimension. The arrowhead pairs in one row are shown staggered relative to the arrowhead pairs in the adjacent row along the fin in the air flow direction so that first arrowhead in the second row is spaced down the air flow direction along the fin by half of the space between arrowhead pairs along the rows. - Referring to
Figs. 1 ,2 ,4 ,10 and11 , the arrowhead pairs in a single row are shown spaced in the direction of air flow according to a multiple of the fin spacing, preferably 6 to 12 times the fin spacing and more preferably 8 or 9 times the fin spacing. - The dimensions of the arrowheads are preferably a function of the fin height. The arrowhead width (normal to the flow in the plane of the fin) is preferably nominally 2 to 3 times fin spacing (0.209"=2.3∗0.091"). The arrowhead length (parallel to the flow) is preferably 5 to 8 times the fin spacing (.091∗6.5=0.591) (0.41+0.181=) 0.591.
- All arrowhead pressings on a given fin point in the same direction with respect to the flow direction. With each subsequent fin, the arrowhead pressings alternate between pointing in the flow direction and against the flow direction.
Claims (7)
- A fin (4) for a heat exchange tube comprising embossed or pressed arrowhead shapes (2) arranged along a longitudinal axis of said fin, wherein said arrowhead shapes are arranged into pairs (16), characterised in that a pointed end of one arrowhead shape (16a) of a pair is nested into a forked end of a second arrowhead shape (16b) of a pair.
- A fin (4) according to claim 1 wherein said arrowhead shapes (2) each comprise two intersecting wedge shapes (6a, 6b) embossed or pressed into said fin.
- A fin (4) according to claim 1, wherein said arrowhead shapes (2) are arranged in two or more rows, said rows aligned with a longitudinal axis of said fin.
- A fin (4) according to claim 1, wherein a first plurality of said arrowhead shapes (2) are pressed in a first direction perpendicular to a plane of said fin, and a second plurality of said arrowhead shapes are pressed in a second direction perpendicular to said plane of said fin, said second direction opposite to said first direction.
- A fin according to claim 1, wherein a first arrowhead shape (16a) of an arrowhead pair is pressed in a first direction perpendicular to a plane of said fin, and a second arrowhead shape (16b) of said arrowhead pair is pressed in a second direction perpendicular to said plane of said fin, said second direction opposite to said first direction.
- A heat exchange tube having a fin according to claim 1 attached thereto, said fin (4) comprising embossed or pressed arrowhead shapes (2) arranged along a longitudinal axis of said fin, wherein said arrowhead shapes are arranged into pairs (16), where a pointed end of one arrowhead shape (16a) of a pair is nested into a forked end of a second arrowhead shape (16b) of a pair.
- A field erected air cooled industrial steam condenser comprising a plurality of finned heat exchange tubes, said heat exchanged tubes each having a plurality of fins (4) according to claim 1 attached to an external surface of a flat surface of said tube aligned perpendicular to a longitudinal axis of said tube, said fins comprising embossed or pressed arrowhead shapes (2) arranged along a longitudinal axis of said fin.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662291196P | 2016-02-04 | 2016-02-04 | |
PCT/US2017/016689 WO2017136819A1 (en) | 2016-02-04 | 2017-02-06 | Arrowhead fin for heat exchange tubing |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3411649A1 EP3411649A1 (en) | 2018-12-12 |
EP3411649A4 EP3411649A4 (en) | 2019-10-02 |
EP3411649B1 true EP3411649B1 (en) | 2021-10-13 |
Family
ID=63633327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17748341.9A Active EP3411649B1 (en) | 2016-02-04 | 2017-02-06 | Arrowhead fin for heat exchange tubing |
Country Status (2)
Country | Link |
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EP (1) | EP3411649B1 (en) |
CN (1) | CN108603731B (en) |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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IT1135516B (en) * | 1981-02-18 | 1986-08-27 | Nuovo Pignone Spa | PERFECTED STEAM CONDENSER WITH AIR COOLING |
JP2596944B2 (en) * | 1987-09-30 | 1997-04-02 | 日本電気ホームエレクトロニクス株式会社 | Television receiver |
US4817709A (en) * | 1987-12-02 | 1989-04-04 | Carrier Corporation | Ramp wing enhanced plate fin |
US4984626A (en) * | 1989-11-24 | 1991-01-15 | Carrier Corporation | Embossed vortex generator enhanced plate fin |
CN2454751Y (en) * | 2000-12-07 | 2001-10-17 | 财团法人工业技术研究院 | Fin-radiator fins with vortex generator |
CN101270942A (en) * | 2008-04-15 | 2008-09-24 | 西安交通大学 | Heat exchange tube fin structure |
JP4775429B2 (en) * | 2008-05-26 | 2011-09-21 | パナソニック株式会社 | Finned tube heat exchanger |
JP5499957B2 (en) * | 2009-07-24 | 2014-05-21 | 株式会社デンソー | Heat exchanger |
JP5156773B2 (en) * | 2010-02-25 | 2013-03-06 | 株式会社小松製作所 | Corrugated fin and heat exchanger provided with the same |
JP5558206B2 (en) * | 2010-05-28 | 2014-07-23 | 株式会社ティラド | Heat exchanger |
JP2012026407A (en) * | 2010-07-27 | 2012-02-09 | Denso Corp | Intercooler |
CN202048825U (en) * | 2011-01-07 | 2011-11-23 | 上海欧兰帝换热器有限公司 | Heat dissipation water fin of heat exchanger |
CN102109282A (en) * | 2011-03-25 | 2011-06-29 | 兰州交通大学 | Finned flat tube heat exchanger with four plane vortex generators on each flat tube |
US9080819B2 (en) * | 2011-10-05 | 2015-07-14 | T.Rad Co., Ltd. | Folded heat exchanger with V-shaped convex portions |
CN103090713B (en) * | 2011-11-07 | 2016-03-02 | 株式会社T.Rad | Heat exchanger |
KR101224071B1 (en) * | 2012-07-05 | 2013-01-21 | 문은국 | The tube type heat exchanger |
-
2017
- 2017-02-06 EP EP17748341.9A patent/EP3411649B1/en active Active
- 2017-02-06 CN CN201780009126.7A patent/CN108603731B/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3411649A4 (en) | 2019-10-02 |
EP3411649A1 (en) | 2018-12-12 |
CN108603731B (en) | 2021-06-01 |
CN108603731A (en) | 2018-09-28 |
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