CN102200405B - Combined triangular curved vortex generator type circular tube fin heat exchanger - Google Patents
Combined triangular curved vortex generator type circular tube fin heat exchanger Download PDFInfo
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- CN102200405B CN102200405B CN 201110073886 CN201110073886A CN102200405B CN 102200405 B CN102200405 B CN 102200405B CN 201110073886 CN201110073886 CN 201110073886 CN 201110073886 A CN201110073886 A CN 201110073886A CN 102200405 B CN102200405 B CN 102200405B
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Abstract
The invention provides a combined triangular curved vortex generator type circular tube fin heat exchanger, which comprises circular tubes and fins, wherein the circular tubes are distributed along the flowing direction of gas; and the fins are sleeved on the circular tubes. The combined triangular curved vortex generator type circular tube fin heat exchanger is characterized in that: holes for sleeving the circular tubes are formed in the fins; an elliptical bump is punched in the front direction of each hole; a transverse elliptical pit is reserved at the back of each fin in the long shaft direction of the elliptical bump along main flowing direction; a pair of circular arc-shaped triangular curved vortex generators is punched on the rear part of each hole in the fin; a pair of circular arc-shaped small holes is reserved in the fin; and bottom edges and circular holes of the curved vortex generators connected with the fins are positioned on a concentric circle. The direction of a long shaft of the elliptical bump which is formed by punching on the fin and positioned at the front end of the circular tube is accordant with the flowing direction, so flow line property is better, the separation of fluids on the rear sides of the circular tubes is avoided, wake flow areas behind the circular tubes are reduced, the heat exchange performance of connecting surfaces between the fins and the wake flow areas is improved, and the flowing resistance loss of the wake flow areas is reduced.
Description
Technical field
The present invention relates to technical field of heat exchangers, is a kind of combined type triangle curved surface whirlpool generator formula pipe pipe wing heat exchanger specifically.
Background technology
The purposes of pipe pipe wing heat exchanger is very extensive.Along with the continuous progress of the national economy level of production and the requirement of energy-saving and emission-reduction, the augmentation of heat transfer of pipe pipe wing heat exchanger is extremely important.The researcher is devoted to strengthen pipe pipe wing heat exchanger exchange capability of heat, reduces the increase of drag losses simultaneously as far as possible, just reduces the operating cost of pipe pipe wing heat exchanger.Fin is installed in the pipe outside is usually reduced thermal resistance, but the restriction that receives economy and fin efficiency makes the increase that the area of fin can not be unlimited to increase heat exchange area.In order further to improve pipe pipe wing heat exchanger heat-transfer performance, make various structures to fin surface.The measure of wherein introducing Secondary Flow is called as third generation augmentation of heat transfer technology.Whirlpool generator in that fin surface stamps out can cause secondary flow in main flow, can strengthen the heat exchange property of fin surface effectively.
The machining property of pipe pipe wing heat exchanger is better than flat tube wing heat exchanger, and it is little to make energy consumption.The cleanliness of pipe is poorer than the cleanliness of the flat tube of flowing through but fluid is flowed through; Near the fluid drag losses of flowing through the pipe front end stagnation point when flowing through the pipe velocity wake region is bigger, and the relatively poor zone of fin surface exchange capability of heat be with the contacted zone of pipe velocity wake region.
Summary of the invention
In line with the heat exchange property that further improves pipe pipe fin-type; Reduce the purpose of fluid resistance losses simultaneously, the present invention relates to reduce a triangle curved surface whirlpool generator of pipe velocity wake region size and the oval convex closure of the formation of punching press on fin that reduces near the fluid resistance losses of upper reaches pipe front end.The present invention provides a kind of can reduce near the fluid resistance losses of pipe front end, strengthens the combined type curved surface whirlpool generator formula pipe pipe wing heat exchanger of heat exchange property.
The present invention adopts following technical proposals to solve its technical problem:
A kind of combined type triangle curved surface whirlpool generator formula pipe pipe wing heat exchanger; Comprise the pipe arranged along gas flow direction and be enclosed within the fin on the pipe; It is characterized in that said fin is provided with the circular hole of suit pipe; Each circular hole the place ahead upwards stamps out an oval convex closure, and the transverse direction stays a horizontal and corresponding oval pit of oval convex closure along main flow direction at the fin back side; Each circular hole rear portion stamps out a pair of circular-arc triangle curved surface whirlpool generator on the said fin; On fin, stay simultaneously a pair of and corresponding circular-arc aperture of triangle curved surface whirlpool generator, base and circular hole that curved surface whirlpool generator links to each other with fin are positioned on the isocentric circular arc.
Said whirlpool generator is symmetrically distributed up and down about the longitudinal centre line of circular hole, generator base, whirlpool be positioned at the concentric circular arc of circular hole on, and the ratio of the radius of circular arc and the radius of circular hole is r
1/ r=1.15 ~ 1.35, the scope of arc chord angle are θ=50 ° ~ 60 °, the line at said whirlpool generator base upper reaches starting point and circular hole center and open bevel β=90 of coming flow path direction ° ~ and 115 °.
The generator limit vertical with the base, said triangle curved surface whirlpool is positioned at the upper reaches, and perpendicular to fin.
The height on the limit that said curved surface whirlpool generator is vertical with the base is 0.6 ~ 0.95 times of spacing of fin.
The major axis of said oval convex closure and the longitudinal centre line of circular hole overlap, the center of oval convex closure on the longitudinal centre line of circular hole, and be positioned at the concentric circular arc of circular hole on, and the ratio of the radius of circular arc and the radius in hole is r
2/ r=1.3 ~ 1.6; Said oval convex closure is projected as an ellipse on fin, the ratio of major axis and minor axis is 2, and major axis is 0.3 ~ 0.4 times of pipe external diameter, and oval convex closure height is 0.5 ~ 0.8 times of spacing of fin.
The edge in hole is provided with the flange boss on the said fin, and the height of flange boss equals the spacing of fin.
The major axis of the present invention's oval convex closure that is positioned at the pipe front end that punching press forms on fin is consistent with flow direction; Cleanliness is better; When fluid is flowed through convex closure; Fluid changes flow direction and flows along convex closure, directly vertically washes away fluid resistance losses that pipe cause with regard to having reduced because of fluid in the pipe front portion like this.Generator makes and between pipe and whirlpool generator, forms a fluid passage in the triangle curved surface whirlpool of pipe center line downstream both sides punching press; Segment fluid flow arrives the pipe wake zone through this passage; Having suppressed pipe rear side fluid separates; Make that velocity wake region reduces behind the pipe, improved the heat exchange property on fin and the velocity wake region abutted surface, and reduced the fluid resistance losses of velocity wake region.Whirlpool generator and boss punching press are in same direction, and diel is made fairly simple.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the fin structure sketch map.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is explained further details:
A kind of combined type triangle curved surface whirlpool generator formula pipe pipe wing heat exchanger; Comprise the pipe 3 arranged along gas flow direction and be enclosed within the fin 4 on the pipe 3; Pipe can be fork row or in-line arrangement arrangement mode; Circular hole 8 rear portions of each suit pipe 3 stamp out a diabolo curved surface whirlpool generator 1 on the fin 4, and on fin 4, stay a pair of and triangle curved surface whirlpool generator 1 corresponding triangular apertures 5.It is that generator 1 limit vertical with the base, triangle curved surface whirlpool is positioned at the upper reaches on the concentric circular arc that generator base, whirlpool is positioned at circular hole 8, and perpendicular to fin 4.Whirlpool generator 1 is symmetrically distributed up and down about the longitudinal centre line of circular hole 8, and generator base, whirlpool is positioned at circular hole 8 on the concentric circular arc, and the ratio of the radius of circular arc and the radius of circular hole 8 is r
1/ r=1.15 ~ 1.35, the scope of arc chord angle are θ=50 ° ~ 60 °, the line at whirlpool generator 1 base upper reaches starting point and circular hole 8 centers and open bevel β=90 of coming flow path direction ° ~ and 115 °.
Every circular hole 8 front end midline are gone out an oval convex closure 6 on fin 4, and the longitudinal centre line of oval convex closure long axis direction and circular hole 8 overlaps, stay accordingly at fin 4 back sides one with the corresponding oval pit 7 of oval convex closure.The center of oval convex closure 6 and is positioned at circular hole 8 on the concentric circular arc on the longitudinal centre line of circular hole 8, and the radius of circular arc is r with the ratio of the radius of circular hole 8
2/ r=1.3 ~ 1.6.Oval convex closure 6 is projected as an ellipse on fin 4, major axis is 2 with the ratio of section axle, and major axis is 0.3 ~ 0.4 times pipe 3 external diameters, and the height of oval convex closure 6 is 0.5 ~ 0.8 times of fin 4 spacings.
The edge of circular hole 8 is provided with flange boss 2 on the fin 4; The height of flange boss 2 equals the spacing of fin 4, and flange boss 2 plays the effect of fin location, simultaneously between pipe and tube sheet during expanded joint; Flange boss 2 can link together with pipe 3 closely, improves the swelling property of pipe and fin 4.
The present invention is sleeved on fin 4 on the pipe 3 after the fin punch forming, and 4 of fins pass through circular hole flange boss 2 location, through just having accomplished the making of whole whirlpool generator formula pipe pipe wing heat exchanger after the series of process such as pressure testing in expand tube, the pipe.
Claims (6)
1. combined type triangle curved surface whirlpool generator formula pipe pipe wing heat exchanger; Comprise the pipe of arranging along gas flow direction (3) and be enclosed within the fin (4) on the pipe (3); It is characterized in that said fin (4) is provided with the circular hole (8) of suit pipe (3); Each circular hole (8) the place ahead upwards stamps out an oval convex closure (6), and the transverse direction stays a horizontal oval pit (7) along main flow direction at fin (4) back side; Said fin (4) is gone up each circular hole (8) rear portion and is stamped out a pair of circular-arc triangle curved surface whirlpool generator (1); Simultaneously on fin, stay a pair of circular-arc aperture (5), base and circular hole (8) that curved surface whirlpool generator (1) links to each other with fin (4) are positioned on the concentric circles.
2. combined type triangle curved surface according to claim 1 whirlpool generator formula pipe pipe wing heat exchanger; It is characterized in that the said whirlpool generator (1) and the longitudinal centre line of circular hole (8) are symmetrically distributed up and down; Generator base, whirlpool mid point be positioned at the concentric circular arc of circular hole (8) on, and the ratio of the radius of the radius of circular arc and circular hole (8) is r
1/ r=1.15 ~ 1.35, the scope of arc chord angle are θ=50 ° ~ 60 °, the line at said whirlpool generator (1) upper reaches, base starting point and circular hole (8) center and open bevel β=90 of coming flow path direction ° ~ and 115 °.
3. combined type triangle curved surface according to claim 1 whirlpool generator formula pipe pipe wing heat exchanger is characterized in that said whirlpool generator (1) limit vertical with the base is positioned at the upper reaches, and perpendicular to fin (4).
4. combined type triangle curved surface according to claim 1 whirlpool generator formula pipe pipe wing heat exchanger, the height that it is characterized in that the limit that said whirlpool generator (1) is vertical with the base is 0.6 ~ 0.95 times of fin (4) spacing.
5. combined type triangle curved surface according to claim 1 whirlpool generator formula pipe pipe wing heat exchanger; It is characterized in that the major axis of said oval convex closure (6) and the longitudinal centre line of circular hole (8) overlap; The center of oval convex closure (6) is on the longitudinal centre line of circular hole (8); And be positioned at the concentric circular arc of circular hole (8) on, and the ratio of the radius of the radius of circular arc and circular hole (8) is r
2/ r=1.3-1.6; Said oval convex closure (6) is projected as an ellipse on fin, the ratio of major axis and minor axis is 2, major axis be pipe (3) external diameter 0.3-0.4 doubly, oval convex closure (6) highly is 0.5-0.8 a times of fin (4) spacing.
6. combined type triangle curved surface according to claim 1 whirlpool generator formula pipe pipe wing heat exchanger; It is characterized in that said fin (4) upward is provided with flange boss (2) in the edge of circular hole (8), the height of flange boss (2) equals the spacing of fin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110073886 CN102200405B (en) | 2011-03-25 | 2011-03-25 | Combined triangular curved vortex generator type circular tube fin heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110073886 CN102200405B (en) | 2011-03-25 | 2011-03-25 | Combined triangular curved vortex generator type circular tube fin heat exchanger |
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| Publication Number | Publication Date |
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| CN102200405A CN102200405A (en) | 2011-09-28 |
| CN102200405B true CN102200405B (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110073886 Active CN102200405B (en) | 2011-03-25 | 2011-03-25 | Combined triangular curved vortex generator type circular tube fin heat exchanger |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256834A (en) * | 2013-02-22 | 2013-08-21 | 广东美的电器股份有限公司 | Oval tube finned type heat exchanger and upward air outlet air-conditioning outdoor unit |
| CN110906778A (en) * | 2019-11-04 | 2020-03-24 | 宁波奥克斯电气股份有限公司 | Fin of heat exchanger, heat exchanger and air conditioner |
| CN113758358A (en) * | 2020-06-01 | 2021-12-07 | 广东美的暖通设备有限公司 | Heat exchanger and air conditioner |
| CN113834129B (en) * | 2020-06-08 | 2022-11-29 | 青岛海信日立空调系统有限公司 | Air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6578627B1 (en) * | 2001-12-28 | 2003-06-17 | Industrial Technology Research Institute | Pattern with ribbed vortex generator |
| CN1645028A (en) * | 2004-01-23 | 2005-07-27 | 富士电机零售设备系统株式会社 | Heat exchanger |
| CN101245974A (en) * | 2008-02-26 | 2008-08-20 | 西安交通大学 | Finned heat exchanger |
| CN101294779A (en) * | 2008-04-15 | 2008-10-29 | 西安交通大学 | Heat exchange tube fin structure |
| CN101334245A (en) * | 2008-08-05 | 2008-12-31 | 西安交通大学 | Tube fin type heat exchanger of side positioned longitudinal whorl generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217999A (en) * | 1994-01-28 | 1995-08-18 | Noritz Corp | Heat exchanging fin |
| JP4115390B2 (en) * | 2001-08-10 | 2008-07-09 | よこはまティーエルオー株式会社 | Heat transfer device |
| JP2009275967A (en) * | 2008-05-14 | 2009-11-26 | Panasonic Corp | Heat exchanger |
-
2011
- 2011-03-25 CN CN 201110073886 patent/CN102200405B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6578627B1 (en) * | 2001-12-28 | 2003-06-17 | Industrial Technology Research Institute | Pattern with ribbed vortex generator |
| CN1645028A (en) * | 2004-01-23 | 2005-07-27 | 富士电机零售设备系统株式会社 | Heat exchanger |
| CN101245974A (en) * | 2008-02-26 | 2008-08-20 | 西安交通大学 | Finned heat exchanger |
| CN101294779A (en) * | 2008-04-15 | 2008-10-29 | 西安交通大学 | Heat exchange tube fin structure |
| CN101334245A (en) * | 2008-08-05 | 2008-12-31 | 西安交通大学 | Tube fin type heat exchanger of side positioned longitudinal whorl generator |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2009-275967A 2009.11.26 |
| JP特开平7-217999A 1995.08.18 |
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