CN104142083B - The streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger fold-line-shaped corrugated fin - Google Patents
The streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger fold-line-shaped corrugated fin Download PDFInfo
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- CN104142083B CN104142083B CN201410374860.1A CN201410374860A CN104142083B CN 104142083 B CN104142083 B CN 104142083B CN 201410374860 A CN201410374860 A CN 201410374860A CN 104142083 B CN104142083 B CN 104142083B
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Abstract
The streamlined change wave amplitude of a kind of elliptical tube fin-tube type heat exchanger fold-line-shaped corrugated fin above stamps out the alternate protruding ripple of streamlined fold-line-shaped (4) of convex-concave and the recessed ripple of streamlined fold-line-shaped (5) according to set streamline at fin (1) from air flow inlet to outlet; The crest line of the protruding ripple of same circular arc (4) is set streamline; The trough line of the recessed ripple of same circular arc (5) is set streamline. Its set streamline is not occur along pipe tail on the axial central cross-section of pipe the streamline refluxing in 1 respective tube fin heat exchanger fin wing passage of fin; The protruding ripple of streamlined fold-line-shaped (4), the recessed ripple of fold-line-shaped (5) wave amplitude longitudinally change with waveform (16), and wave amplitude is along laterally changing with waveform (17) envelope ripple paddy peak. In the time that fluid is flowed through streamlined fold-line-shaped corrugated fin, the channel flow that segment fluid flow forms along the protruding ripple of fold-line-shaped (4) and the recessed ripple 5 of fold-line-shaped, has reduced flow resistance, has improved the exchange capability of heat of fin.
Description
Technical field
The present invention relates to elliptical tube fin-tube type heat exchanger fin. Be particularly related to the streamlined change ripple of a kind of elliptical tube fin-tube type heat exchangerWidth fold-line-shaped corrugated fin.
Background technology
Pipe fin-tube type heat exchanger is widely used in multiple industries such as chemical industry, air-conditioning, refrigeration. When such heat exchanger work, liquidWorking medium flows in pipe, and gas is in pipe flows outside. Gas side thermal resistance accounts for the 70%-90% of this type of heat exchanger entire thermal resistance, is to changeThe main thermal resistance of hot link. Thereby the thermal resistance that reduces air side is very important to improving heat exchanger overall heat exchange performance. LogicalNormal by increasing the heat exchange area of fin and the flow perturbation of reinforcement air side, the heat exchange that increases air side, improves changing of heat exchangerHot property. With this end in view, designed the enhanced heat exchange fin of various shapes, such as, shutter, transverse wave, crack,Whirlpool generator, discontinuous aunular surface groove, the vertical thorn of rhombus etc.
Elliptical tube fin-tube type heat exchanger is because its pipe geometry is compared with pipe and had certain cleanliness feature, but when pipeWhen sub-size becomes large or flow velocity and improves, mobile cleanliness variation, lift-off when fluid skims over elliptical tube and flows causes flowing pressureLose larger, and elliptical tube afterbody form be unfavorable for conduct heat recirculating zone. Now can not improve flow through fin side of fluid with finCleanliness. Therefore, elliptical tube fin-tube type heat exchanger fin surface heat exchange property needs further to be improved.
Summary of the invention
Thinking of the present invention be by stamp out at elliptical tube fin-tube type heat exchanger fin surface streamlined ripple guiding fluid byStreamline flows, and reaches and improves fluid flow stream linearity, reduces flowing pressure loss, improves the object of fin exchange capability of heat.
For the technical solution used in the present invention that achieves the above object is to move towards from air flow inlet to outlet according to streamline on fin 1Continuous punching extrudes the alternate protruding ripple 4 of streamlined fold-line-shaped and the recessed ripple 5 of streamlined fold-line-shaped of convex-concave; The protruding ripple of same fold-line-shapedThe crest line of line (4) is set streamline; The trough line of the recessed ripple of same fold-line-shaped (5) is set streamline, ripple area limitBoundary 8 is also set streamline, and fin median plane O-O is upper before punching press, determines with value of stream function.
The wave amplitude of the protruding ripple 4 of streamlined fold-line-shaped and the recessed ripple 5 of fold-line-shaped changes with waveform 16 in grain direction, such as,In the high region of flow velocity (elliptical tube peripheral region), wave amplitude is less, in the low region of flow velocity (region between front and rear row elliptical tube)Wave amplitude is larger.
The wave amplitude of the protruding ripple 4 of different streamlined fold-line-shapeds and the recessed ripple 5 of fold-line-shaped is along laterally pressing waveform 17 envelope ripple paddyPeak changes, such as, larger at the ripple wave amplitude in the region away from pipe, less at the ripple wave amplitude near pipe near zone.
The protruding ripple 4 of fold-line-shaped of described streamlined fin 1, the minimum wave amplitude of the recessed ripple 5 of fold-line-shaped are spacing of fin 0.1-0.9 times.
The protruding ripple 4 of fold-line-shaped of described streamlined fin 1, the transverse shape of the recessed ripple 5 of fold-line-shaped are fold-line-shaped. ItsDefinite method of fold-line-shaped molded line is: first set streamline 9, set streamline 10, set streamline 11, set streamline 12, setBefore streamline 13, set streamline 14, set streamline 15 are placed on punching press, fin median plane O-O is upper, these set streamlines and transversalThe intersection point of face A-A be respectively intersection point 9 ', intersection point 10 ', intersection point 11 ', intersection point 12 ', intersection point 13 ', intersection point 14 ' and intersection point 15 ',By wave amplitude size vertical central plane O-O move up intersection point 10 ', intersection point 12 ', a little 10 ", put 12 ", point of intersection point 14 ' point be clipped to14 ", move down intersection point 11 ', intersection point 13 ' point be clipped to a little 11 ", point 13 ", finally respectively by 2 points 9 ' and point 10 ",Point 10 " and point 11 ", point 11 " and point 12 ", point 12 " and point 13 ", point 13 " and point 14 " and point 14 " the protruding ripple of and point 15 ' determineThe fold-line-shaped molded line equation of line (4) and recessed ripple (5).
The set streamline of described streamlined fin 1 is axial along pipe in 1 respective tube fin heat exchanger fin wing passage of finOn central cross-section there is not the streamline refluxing in pipe tail.
The protruding ripple 4 of fold-line-shaped of described streamlined fin 1, recessed ripple 5 spacing of fold-line-shaped or number are according to ripple area limitThe value of stream function on boundary 8 is determined.
The protruding ripple 4 of fold-line-shaped, the recessed ripple 5 of fold-line-shaped stamping out on described streamlined fin 1 distributes alternately and differenceLongitudinal and transverse center line about oval pore 2 is symmetrical.
On described streamlined fin 1, stamp out elliptical ring boss 3, and stamp out a flange 7 at its top, be convenient to fin and wearPipe and a definite pitch of fins.
The height that stamps out elliptical ring boss 3 on described streamlined fin 1 can change, for regulating spacing of fin, and weldingRear boss contacts with elliptical tube tightly, plays fixing fin and reduce the effect of thermal resistance.
After streamlined fin and pipe assembling, in the time that fluid flows between multi-layer streamline fin, by the streamline of fin surfaceType fold-line-shaped convex-concave ripple continuously guides, and segment fluid flow flows along set streamline, has reduced flow resistance. Meanwhile,Streamlined fold-line-shaped ripple wave amplitude changes and different fold-line-shaped ripple wave amplitude according to 16 cycles of curve waveform along set grain directionAlong laterally further having reduced flow resistance by the variation at waveform 17 envelope ripple paddy peaks. Fin surface fold-line-shaped convex-concave ripple increasesFin surface area, reduced heat transfer resistance, improved the exchange capability of heat of fin.
Brief description of the drawings
Fig. 1 is the streamlined change wave amplitude of a kind of elliptical tube fin-tube type heat exchanger fold-line-shaped corrugated fin.
Fig. 2 is that fold-line-shaped ripple molded line is determined method schematic diagram.
Label in Fig. 1: 1. fin; 2. oval pore on fin; 3. elliptical ring boss; 4. the protruding ripple of fold-line-shaped; 5. foldingLinear recessed ripple; 6. bellows-shaped; 7. flange; 8. ripple area border; 16. wave amplitudes longitudinally change waveform; 17. wave amplitude edgesCross directional variations envelope crest, trough waveform.
Label in Fig. 2: 9-15 set streamlines; Point 9 '-15 ' be the set streamline 9-15 being placed on O-O faceRespectively with the intersection point of cross section A-A; Point 10 "-14 " be by wave amplitude size vertical central plane O-O move up and down a little 10 '-Point 14 ' after corresponding points.
Detailed description of the invention
Referring to Fig. 1-2, the streamlined folding that the present invention includes oval pore 2 on fin 1, elliptical ring boss 3, stamps outLinear protruding ripple 4, the recessed ripple 5 of fold-line-shaped and bellows-shaped 6. Oval pore 2 can adopt fork row or in-line arrangement mode. OvalThe height of ring boss 3 equals spacing of fin, plays the effect of fin location. There is a flange at the top of elliptical ring boss 3 toward turning up7, be convenient to fin poling and fin location. The protruding ripple 4 of streamlined fold-line-shaped (solid line) is pressed with the recessed ripple 5 of fold-line-shaped (dotted line)Distribute alternately between ripple area border 8 according to value of stream function, and divide about the longitudinal and transverse center line symmetry of oval pore 2 respectivelyCloth. The protruding ripple 4 of streamlined fold-line-shaped all moves towards from air flow inlet to outlet continuous separate along set streamline with the recessed ripple 5 of fold-line-shapedCloth. The protruding ripple 4 of streamlined fold-line-shaped changes according to 16 cycles of curve waveform along the longitudinal with the wave amplitude of the recessed ripple 5 of fold-line-shaped, thanAs, reduce wave amplitude in the high region of flow velocity (elliptical tube peripheral region), in (district between front and rear row elliptical tube, the low region of flow velocityTerritory) increase wave amplitude. The wave amplitude of the protruding ripple 4 of different streamlined fold-line-shapeds and the recessed ripple 5 of fold-line-shaped is along laterally pressing waveform 17 envelopesRipple paddy peak changes, such as, larger at the ripple wave amplitude in the region away from pipe, at the ripple wave amplitude near pipe near zoneLittle. Ripple maximum amplitude is 0.1-0.9 times of spacing of fin. According to first set streamline 9, set streamline 10, set streamline11, set streamline 12, set streamline 13, set streamline 14, set streamline 15 are placed on the front fin median plane O-O of punching pressUpper, the intersection point of these set streamlines and cross section A-A be respectively intersection point 9 ', intersection point 10 ', intersection point 11 ', intersection point 12 ', intersection point13 ', intersection point 14 ' and intersection point 15 ', by wave amplitude size vertical central plane O-O move up intersection point 10 ', intersection point 12 ', intersection point 14 'Point be clipped to a little 10 ", point 12 ", point 14 ", move down intersection point 11 ', intersection point 13 ' point be clipped to a little 11 ", put 13 ", finally divideTong Guo 2 point 9 ' and point 10 ", point 10 " and point 11 ", point 11 " and point 12 ", point 12 " and point 13 ", point 13 " and point 14 "And point 14 " and point 15 ' determine the fold-line-shaped molded line equation of protruding ripple (4) and recessed ripple (5).
The present invention, after fin 1 punch forming, is sleeved on fin 1 on elliptical tube through elliptical aperture 2, and 1 of fin passes throughElliptical ring boss 3 is located, by just having completed whole fin-tube type heat exchanger after a series of common process such as pressure testing in welding, pipeMaking.
The operation principle of streamlined fold-line-shaped corrugated fin is: when in the passage of fluid between streamlined fold-line-shaped corrugated finWhile flowing, be the continuously guiding of the protruding ripple 4 of fold-line-shaped and the recessed ripple 5 of fold-line-shaped by the cross section of fin surface, logicalRoad internal shunt body flows in the streamlined passage that the protruding ripple 4 of fold-line-shaped and the recessed ripple 5 of fold-line-shaped form, and flows flat in passageSurely, assignment of traffic is comparatively even, has effectively suppressed the lift-off of elliptical tube afterbody fluid, has obviously reduced flow resistance. StreamlinedThe wave amplitude of fold-line-shaped ripple longitudinally has further reduced to be flowing in the shearing stress of wall with cross directional variations, make flow resistance enter oneStep reduces. Meanwhile, the protruding ripple 4 of fold-line-shaped and the recessed ripple 5 of fold-line-shaped increased fin surface amass, reduced fin side conduct heat heatResistance, and fluid flow line type flows and makes to be difficult for producing recirculating zone after elliptical tube, and the heat exchange property of elliptical tube rear portion fin also obtains brightAobvious raising. More than invention makes streamlined fold-line-shaped corrugated fin have mobile and heat transfer property preferably.
Claims (7)
1. the streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger fold-line-shaped corrugated fin, is characterized in that: at wingSheet (1) is upper extrudes convex-concave alternate streamlined broken line from air flow inlet to outlet continuous punching according to set streamline trendThe protruding ripple of shape (4) and the recessed ripple of streamlined fold-line-shaped (5); Definite method of its fold-line-shaped molded line is: first setStreamline one (9), set streamline two (10), set streamline three (11), set streamline four (12), both constant currentsLine five (13), set streamline six (14), set streamline seven (15) are placed on the front fin median plane O of punching press-O is upper, and the intersection point of these set streamlines and cross section A-A is respectively an I (9 '), some II (10 '), pointIII (11 '), some IV (12 '), some V (13 '), some VI (14 '), some VII (15 '), vertical by wave amplitude sizeMedian plane O-O move up intersection point II (10 '), intersection point IV (12 '), intersection point VI (14 ') to a some II (10 "),Point IV (12 "), some VI (14 "), move down intersection point III (11 '), intersection point V (13 ') point is clipped to an III(11 "), some V (13 "), finally respectively by 2 some I (9 ') and some II (10 "), some II (10 ")(11 "), some III (11 ") and some IV (12 ") are put IV (12 ") and V (13 "), V (13 ") with an IIIAnd VI (14 ") and VI (14 ") and VII (15 ') are determined the fold-line-shaped molded line side of protruding ripple (4) and recessed ripple (5)Journey; The crest line of the protruding ripple of same fold-line-shaped (4) is set streamline; The recessed ripple of same fold-line-shaped (5)Trough line be set streamline; Its set streamline is fin (1) institute respective tube fin heat exchanger fin wing passageThe interior streamline that does not occur backflow along pipe tail on the axial central cross-section of pipe; The wave amplitude of ripple is in longitudinal variation; Along horizontalTo the amplitude change of different ripples.
2. the streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger according to claim 1 fold-line-shaped ripple wingSheet, ripple area border (8) are also set streamlines, and fin median plane O-O is upper before punching press, to flow letterNumerical value is determined.
3. the streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger according to claim 1 fold-line-shaped ripple wingSheet, is characterized in that the protruding ripple of fold-line-shaped (4), the recessed ripple of fold-line-shaped (5) wave amplitude longitudinally change with waveform (16).
4. the streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger according to claim 1 fold-line-shaped ripple wingSheet, is characterized in that the wave amplitude edge of the protruding ripple of fold-line-shaped (4), the recessed ripple of fold-line-shaped (5) is laterally with waveform (17) envelopeRipple paddy peak changes.
5. the streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger according to claim 1 fold-line-shaped ripple wingSheet, the maximum amplitude that it is characterized in that the protruding ripple of fold-line-shaped (4), the recessed ripple of fold-line-shaped (5) is spacing of fin 0.1-0.9 times.
6. the streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger according to claim 1 fold-line-shaped ripple wingSheet, is characterized in that the spacing of the protruding ripple of fold-line-shaped (4), the recessed ripple of fold-line-shaped (5) or number are according to ripple area limitThe value of stream function on boundary (8) is determined.
7. the streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger according to claim 1 fold-line-shaped ripple wingSheet, is characterized in that the protruding ripple of the fold-line-shaped stamping out (4), the recessed ripple of fold-line-shaped (5) distribute alternately and closes respectivelyCenter line in length and breadth in oval pore (2) is symmetrical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374860.1A CN104142083B (en) | 2014-08-01 | 2014-08-01 | The streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger fold-line-shaped corrugated fin |
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| CN201410374860.1A CN104142083B (en) | 2014-08-01 | 2014-08-01 | The streamlined change wave amplitude of elliptical tube fin-tube type heat exchanger fold-line-shaped corrugated fin |
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| CN104142083A CN104142083A (en) | 2014-11-12 |
| CN104142083B true CN104142083B (en) | 2016-05-18 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124057A (en) * | 1994-03-03 | 1996-06-05 | Gea空冷设备公司 | Finned tube heat exchanger |
| CN1197922A (en) * | 1997-04-28 | 1998-11-04 | 株式会社日立制作所 | Heat excharger |
| CN1884958A (en) * | 2005-06-23 | 2006-12-27 | 汽车冷冻装置有限及两合公司 | Heat exchange element and associated heat exchanger |
| CN101752356A (en) * | 2008-11-28 | 2010-06-23 | 富士电机***株式会社 | Cooling apparatus for semiconductor chips |
| CN103245247A (en) * | 2013-05-24 | 2013-08-14 | 南京北大工道软件技术有限公司 | Sweptback type corrugated fin |
| WO2013157212A1 (en) * | 2012-04-16 | 2013-10-24 | パナソニック株式会社 | Fin-tube heat exchanger |
-
2014
- 2014-08-01 CN CN201410374860.1A patent/CN104142083B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124057A (en) * | 1994-03-03 | 1996-06-05 | Gea空冷设备公司 | Finned tube heat exchanger |
| CN1197922A (en) * | 1997-04-28 | 1998-11-04 | 株式会社日立制作所 | Heat excharger |
| CN1884958A (en) * | 2005-06-23 | 2006-12-27 | 汽车冷冻装置有限及两合公司 | Heat exchange element and associated heat exchanger |
| CN101752356A (en) * | 2008-11-28 | 2010-06-23 | 富士电机***株式会社 | Cooling apparatus for semiconductor chips |
| WO2013157212A1 (en) * | 2012-04-16 | 2013-10-24 | パナソニック株式会社 | Fin-tube heat exchanger |
| CN103245247A (en) * | 2013-05-24 | 2013-08-14 | 南京北大工道软件技术有限公司 | Sweptback type corrugated fin |
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| CN104142083A (en) | 2014-11-12 |
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