CN104101244B - The streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger - Google Patents
The streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger Download PDFInfo
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- CN104101244B CN104101244B CN201410377479.0A CN201410377479A CN104101244B CN 104101244 B CN104101244 B CN 104101244B CN 201410377479 A CN201410377479 A CN 201410377479A CN 104101244 B CN104101244 B CN 104101244B
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- 239000011148 porous material Substances 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 13
- 230000003749 cleanliness Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger. Stamping out convex-concave alternate streamlined convex ripple (4) and streamlined recessed ripple (5) from air flow inlet to outlet according to set streamline trend on fin (1), the crest line of the streamlined convex ripple (4) of same is set streamline; The trough line of the streamlined recessed ripple (5) of same is set streamline. Set streamline is that in fin-tube type heat exchanger fin wing passage corresponding to fin (1), along pipe axial center section, pipe tail occurs without the streamline of backflow. Ripple amplitude longitudinally presses waveform (9) change; The wave amplitude of laterally-distinct ripple changes with waveform (10) envelope ripple paddy peak. Streamlined convex ripple (4), maximum amplitude is spacing of fin 0.1 0.9 times of streamlined recessed ripple (5), its transverse section is arbitrary shape. When fluid flows between streamlined corrugated fin, segment fluid flow flows in the streamline flow passages that convex-concave ripple is formed, and reduces flow resistance, improves the exchange capability of heat of fin.
Description
Technical field
The present invention relates to elliptical tube fin-tube type heat exchanger fin, particularly to a kind of streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger.
Background technology
Fin-tube type heat exchanger is applied widely. The thermal resistance of such heat exchanger is concentrated mainly on fin side, thus energy consumption also mainly consumes in fin side. Generally, the working medium of such heat exchanger Bottomhole pressure is liquid, and manages the gas that outer fin effluent is dynamic, is air or other mixing gas in most of number situations. For reducing the thermal resistance of gas side, installing fin outside pipe can increase heat exchange area, reaches to reduce the purpose of thermal resistance.
Elliptical tube fin-tube type heat exchanger has certain cleanliness feature owing to its pipe geometry is compared with pipe, but when pipe sizing becomes big or flow velocity improves, its cleanliness is deteriorated, lift-off when fluid skims over elliptical tube flowing causes flowing pressure loss bigger, and form the recirculating zone being unfavorable for heat transfer at elliptical tube afterbody, thus flowing heat transfer performance needs to be improved further. Existing enhanced fin heat transfer technology is not obviously improved the fluid cleanliness at pipe wing wing passage. For improving the heat transfer property of elliptical tube fin heat exchanger further, the fin seeking to be suitable for elliptical tube fin-tube type heat exchanger is very necessary.
Summary of the invention
The thinking of the present invention is that the streamlined ripple by stamping out at elliptical tube fin-tube type heat exchanger fin surface guides fluid to flow by set streamline, reach improve fluid flowing cleanliness, suppress fluid winding flow elliptical tube time lift-off, reduce flow resistance, improve fin exchange capability of heat purpose.
It is stamp out convex-concave alternate streamlined convex ripple 4 and streamlined recessed ripple 5 from air flow inlet to outlet according to set streamline trend on fin 1 for reaching above-mentioned purpose the technical solution used in the present invention;The crest line of the streamlined convex ripple 4 of same is set streamline; The trough line of the streamlined recessed ripple 5 of same is set streamline; Ripple area border 8 is also set streamline, and before stamping on fin median plane O O, determines according to value of stream function.
The wave amplitude of streamlined convex ripple 4 and streamlined recessed ripple 5 is longitudinally changing by waveform 9, and region (pipe peripheral region) wave amplitude high at flow velocity is less, and region (front and rear row pipe between the region) wave amplitude low at flow velocity is bigger.
Different streamlined convex ripples 4 and the wave amplitude of streamlined recessed ripple 5 transversely change with waveform 10 envelope ripple paddy peak, and such as, the ripple amplitude in the region away from pipe is relatively big, less at the ripple amplitude near pipe near zone.
The streamlined convex ripple 4 of described streamlined fin 1,0.1-0.9 times that minimum wave amplitude is spacing of fin of streamlined recessed ripple 5.
The streamlined convex ripple 4 of described streamlined fin 1, streamlined recessed ripple 5 transverse section can be any bellows-shaped 6, such as fold-line-shaped, just/cosine waveform, parabola shaped, circular arc etc.
The set streamline of described streamlined fin 1 refers to that in fin-tube type heat exchanger fin wing passage corresponding to fin 1, pipe tail occurs without the streamline of backflow along pipe axial center section.
The streamlined convex ripple 4 of described streamlined fin 1, streamlined recessed ripple 5 spacing or number are determined according to the value of stream function on ripple area border 8.
The streamlined convex ripple 4 stamped out on described streamlined fin 1, streamlined recessed ripple 5 distribute alternately and longitudinal and transverse centrage respectively about oval pore 2 is symmetrical.
Described streamlined fin 1 stamps out annulus boss 3, and stamps out a flange 7 at its top, it is simple to fin poling and determine a pitch of fins.
The height stamping out annulus boss 3 on described streamlined fin 1 can change, and is used for regulating spacing of fin, and welding rear boss contacts with pipe tightly, plays fixing fin and reduces the effect of thermal resistance.
After streamlined fin assembles with pipe, when fluid flows between multi-layer streamline fin, constantly guided by the streamlined convex-concave ripple of fin surface, fluid flows mainly along set streamline, in passage, steadily, the lift-off of elliptical tube afterbody fluid obtains effective suppression, simultaneously in flowing, streamlined ripple amplitude longitudinally and the change of transverse direction, further reduces flow resistance. The streamlined convex-concave ripple of fin surface adds fin surface area simultaneously, reduces heat transfer resistance, improves the exchange capability of heat of fin.
Accompanying drawing explanation
Fig. 1 is a kind of streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger.
Label in Fig. 1: 1. fin; 2. oval pore on fin; 3. elliptical ring boss; 4. streamlined convex ripple; 5. streamlined recessed ripple; 6. bellows-shaped; 7. flange; 8. ripple area border; 9. wave amplitude longitudinally changes waveform; 10. wave amplitude transversely changes envelope crest, trough waveform.
Detailed description of the invention
Referring to Fig. 1, the present invention includes the oval pore 2 on streamlined fin 1, elliptical ring boss 3, the streamlined convex ripple 4 stamped out, streamlined recessed ripple 5 and bellows-shaped 6. Oval pore 2 can adopt fork row or in-line arrangement mode. The height of elliptical ring boss 3 is equal to spacing of fin, plays the effect of fin location. There is a flange 7 at the top of elliptical ring boss 3 toward turning up, it is simple to fin poling and location. Streamlined convex ripple 4 (solid line) and streamlined recessed ripple 5 (dotted line) distribute alternately between ripple area border 8 according to the value of stream function on ripple area border 8, and the longitudinal and transverse centrage respectively about oval pore 2 is symmetrical.Streamlined convex ripple 4 and streamlined recessed ripple 5 are along streamline trend from air flow inlet to outlet continuous distribution. The wave amplitude of streamlined convex ripple 4 and streamlined recessed ripple 5 is in a longitudinal direction according to waveform 9 cyclically-varying, region (elliptical tube peripheral region) wave amplitude high at flow velocity is relatively low, and region (front and rear row elliptical tube between the region) wave amplitude low at flow velocity is bigger. Different streamlined convex ripples 4 and the wave amplitude of streamlined recessed ripple 5 transversely press the rule change at waveform 10 envelope ripple paddy peak, and the ripple amplitude in the region away from pipe is relatively big, less at the ripple amplitude near pipe near zone. Ripple amplitude maximum is 0.1-0.9 times of spacing of fin. The section bellows-shaped 6 of streamlined convex ripple 4 and streamlined recessed ripple 5 can be any shape, such as, and fold-line-shaped, just/cosine waveform, parabola shaped, circular arc etc.
The present invention is after the punch forming of streamlined fin 1, fin 1 is sleeved on elliptical tube through oval pore 2, positioned by elliptical ring boss 3 between fin 1, by just completing the making of whole elliptical tube fin-tube type heat exchanger after a series of common process such as pressure testing in welding, managing.
The operation principle of streamlined corrugated fin is: when flowing in fluid passage between streamlined corrugated fin, continuous guiding by the streamlined convex ripple 4 of fin surface and streamlined recessed ripple 5, inner fluid passage is flowing in the streamline flow passages that convex ripple 4 and recessed ripple 5 are formed mainly, the wave amplitude of streamlined ripple longitudinally and transversely changes the wall shear stress decline making flowing in streamline flow passages, hence it is evident that reduce flow resistance. Meanwhile, streamlined convex ripple 4 and streamlined recessed ripple 5 add fin surface and amass, reduce fin side heat transfer resistance, and fluid flow line type flows after making elliptical tube and is not likely to produce recirculating zone, and the heat exchange property of elliptical tube rear portion fin is also improved significantly. More than invention makes streamlined change wave amplitude corrugated fin have flowing and heat transfer property preferably.
Claims (6)
1. the streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger, it is characterised in that: on fin (1), extrude the alternate streamlined convex ripple (4) of convex-concave and streamlined recessed ripple (5) according to set streamline trend from air flow inlet to exporting continuous punching; The crest line of the streamlined convex ripple (4) of same is set streamline; The trough line of the streamlined recessed ripple (5) of same is set streamline; Its set streamline is that in fin-tube type heat exchanger fin wing passage corresponding to fin (1), along pipe axial center section, pipe tail occurs without the streamline of backflow; The wave amplitude of ripple is longitudinally by the change of required waveform; Laterally-distinct ripple presses the waveform change at envelope ripple paddy peak.
2. the streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger according to claim 1, is characterized in that ripple area border (8) is also set streamline, and before stamping on fin median plane O O, determines with value of stream function.
3. the streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger according to claim 1, it is characterized in that streamlined convex ripple (4), maximum amplitude is spacing of fin 0.1 0.9 times of streamlined recessed ripple (5).
4. the streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger according to claim 1, is characterized in that streamlined convex ripple (4), the transverse section of streamlined recessed ripple (5) is random waveform.
5. the streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger according to claim 1, is characterized in that streamlined convex ripple (4), the spacing of streamlined recessed ripple (5) or the value of stream function of number foundation ripple area border (8) are determined.
6. the streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger according to claim 1, is characterized in that the streamlined convex ripple (4) stamped out, streamlined recessed ripple (5) distribute alternately and centrage in length and breadth respectively about oval pore (2) is symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377479.0A CN104101244B (en) | 2014-08-01 | 2014-08-01 | The streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377479.0A CN104101244B (en) | 2014-08-01 | 2014-08-01 | The streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN104101244A CN104101244A (en) | 2014-10-15 |
| CN104101244B true CN104101244B (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410377479.0A Active CN104101244B (en) | 2014-08-01 | 2014-08-01 | The streamlined change wave amplitude corrugated fin of elliptical tube fin-tube type heat exchanger |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956228B (en) * | 2018-07-15 | 2021-02-05 | 东北石油大学 | Core preparation method for eliminating external on-way shear |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197922A (en) * | 1997-04-28 | 1998-11-04 | 株式会社日立制作所 | Heat excharger |
| CN1275708A (en) * | 1999-05-31 | 2000-12-06 | 三菱重工业株式会社 | Heat exchanger and making method thereof |
| JP3442713B2 (en) * | 2000-03-01 | 2003-09-02 | 株式会社日立製作所 | Heat exchanger |
| CN1573271A (en) * | 2003-05-28 | 2005-02-02 | Lg电子株式会社 | Heat exchanger |
| CN201476667U (en) * | 2009-06-25 | 2010-05-19 | 跃腾科技股份有限公司 | Thermal pipe type radiation fin capable of enlarging radiation areas |
| CN202853449U (en) * | 2011-10-14 | 2013-04-03 | 松下电器产业株式会社 | Finned tube heat exchanger |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3367353B2 (en) * | 1996-11-12 | 2003-01-14 | 松下電器産業株式会社 | Finned heat exchanger |
| JP5077926B2 (en) * | 2007-01-25 | 2012-11-21 | 国立大学法人 東京大学 | Heat exchanger |
-
2014
- 2014-08-01 CN CN201410377479.0A patent/CN104101244B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197922A (en) * | 1997-04-28 | 1998-11-04 | 株式会社日立制作所 | Heat excharger |
| CN1275708A (en) * | 1999-05-31 | 2000-12-06 | 三菱重工业株式会社 | Heat exchanger and making method thereof |
| JP3442713B2 (en) * | 2000-03-01 | 2003-09-02 | 株式会社日立製作所 | Heat exchanger |
| CN1573271A (en) * | 2003-05-28 | 2005-02-02 | Lg电子株式会社 | Heat exchanger |
| CN201476667U (en) * | 2009-06-25 | 2010-05-19 | 跃腾科技股份有限公司 | Thermal pipe type radiation fin capable of enlarging radiation areas |
| CN202853449U (en) * | 2011-10-14 | 2013-04-03 | 松下电器产业株式会社 | Finned tube heat exchanger |
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| CN104101244A (en) | 2014-10-15 |
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Effective date of registration: 20240528 Address after: 730070 No. 139, Zaolin Road, Anning District, Lanzhou City, Gansu Province (Lanzhou Jiaotong University Science Park) Patentee after: Lanzhou Jinnuo Green Energy Power Technology Co.,Ltd. Country or region after: China Address before: 730070 No. 88 Anning West Road, Anning District, Gansu, Lanzhou Patentee before: Lanzhou Jiaotong University Country or region before: China |