CN102200405A - 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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- CN102200405A CN102200405A CN 201110073886 CN201110073886A CN102200405A CN 102200405 A CN102200405 A CN 102200405A CN 201110073886 CN201110073886 CN 201110073886 CN 201110073886 A CN201110073886 A CN 201110073886A CN 102200405 A CN102200405 A CN 102200405A
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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 is subjected to 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, fin surface is made various structures.The measure of wherein introducing secondary stream is called as third generation augmentation of heat transfer technology.In main flow, secondary flow can be caused at the whirlpool generator that fin surface stamps out, the heat exchange property of fin surface can be strengthened 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, fluid flow through near the pipe front end stagnation point and when flowing through the pipe velocity wake region drag losses 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 loss 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 loss of upstream pipe front end.The invention provides and a kind ofly can reduce near the fluid resistance loss pipe front end, strengthen 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 along gas flow direction pipe of arranging and the fin that is enclosed within on the pipe, it is characterized in that described fin is provided with the hole of suit pipe, each the place ahead, hole upwards stamps out an oval convex closure, the transverse direction stays a horizontal oval pit along main flow direction at the fin back side; Each rear portion, hole stamps out a pair of circular-arc triangle curved surface whirlpool generator on the described fin, stays a pair of circular-arc aperture simultaneously on fin, and base and circular hole that curved surface whirlpool generator links to each other with fin are positioned on the concentric circles.
The longitudinal centre line of described whirlpool generator and pipe is symmetrically distributed up and down, and it is on the concentric circular arc that generator base, whirlpool mid point is positioned at the hole, and the ratio of the radius of circular arc and the radius in hole is
r 1/
r=1.15 ~ 1.35, the scope of arc chord angle is
θ=50 ° ~ 60 °, the line at described whirlpool generator base starting point and center, hole and come angle β=90 ° of flow path direction ~ 115 °.
The generator limit vertical with the base, described triangle curved surface whirlpool is positioned at front end, and perpendicular to fin.
The height on the limit that described curved surface whirlpool generator is vertical with the base is 0.6 ~ 0.95 times of spacing of fin.
The major axis of described oval convex closure is consistent with flow direction, and the center of oval convex closure is on the longitudinal centre line in hole, and to be positioned at the hole be on the concentric circular arc, and the ratio of the radius of circular arc and the radius in hole is
r 2/
r=1.3 ~ 1.6; Described 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 described 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 loss that pipe cause with regard to having reduced because of fluid in the pipe front portion like this.Make between pipe and whirlpool generator at the triangle curved surface whirlpool of pipe center line downstream both sides punching press generator and to form a fluid passage, 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, improve the heat exchange property on fin and the velocity wake region abutted surface, and reduced the fluid resistance loss 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 a structural representation of the present invention;
Fig. 2 is the fin structure schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further details:
A kind of combined type triangle curved surface whirlpool generator formula pipe pipe wing heat exchanger, comprise along gas flow direction pipe of arranging 3 and the fin 4 that is enclosed within on the pipe 3, pipe can be fork row or in-line arrangement arrangement mode, each 8 rear portion, hole stamps out a diabolo curved surface whirlpool generator 1 on the fin 4, and stays a pair of triangular apertures 5 on fin 4.It is that generator 1 limit vertical with the base, triangle curved surface whirlpool is positioned at front end on the concentric circular arc that generator base, whirlpool mid point is positioned at hole 8, and perpendicular to fin 4.Whirlpool generator 1 is symmetrically distributed up and down with the longitudinal centre line of pipe 3, and generator base, whirlpool mid point is positioned at hole 8 on the concentric circular arc, and the ratio of the radius of circular arc and the radius in hole 8 is
r 1/
r=1.15 ~ 1.35, the scope of arc chord angle is
θ=50 ° ~ 60 °, the line at whirlpool generator 1 base starting point and 8 centers, hole and come angle β=90 ° of flow path direction ~ 115 °.
Every hole 8 front end midline are gone out an oval convex closure 6 on fin 4, and the transverse direction stays an oval pit 7 accordingly along main flow direction at fin 4 back sides.The major axis of oval convex closure 6 is consistent with flow direction, and the center of oval convex closure 6 is on the longitudinal centre line in hole 8, and to be positioned at hole 8 be that the radius of circular arc is on the concentric circular arc with the ratio of the radius in hole 8
r 2/
r=1.3 ~ 1.6.Oval convex closure 6 is projected as an ellipse on fin 4, the ratio of major axis and section axle is 2, 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 in 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 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, by just having finished 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 fin (4) on the pipe (3), it is characterized in that described fin (4) is provided with the hole (8) of suit pipe (3), the place ahead, each hole (8) upwards stamps out an oval convex closure (6), the transverse direction stays a horizontal oval pit (7) along main flow direction at fin (4) back side; Described fin (4) is gone up rear portion, each hole (8) and is stamped out a pair of circular-arc triangle curved surface whirlpool generator (1), simultaneously stay a pair of circular-arc aperture (5) on fin, curved surface whirlpool generator (1) is positioned on the concentric circles with base and circular hole that fin (4) links to each other.
2. combined type triangle curved surface according to claim 1 whirlpool generator formula pipe pipe wing heat exchanger, it is characterized in that the described whirlpool generator (1) and the longitudinal centre line of pipe (3) are symmetrically distributed up and down, it is on the concentric circular arc that generator base, whirlpool mid point is positioned at hole (8), and the ratio of the radius of the radius of circular arc and hole (8) is
r 1/
r=1.15 ~ 1.35, the scope of arc chord angle is
θ=50 ° ~ 60 °, the line at described whirlpool generator (1) base starting point and center, hole (8) and come angle β=90 ° of flow path direction ~ 115 °.
3. combined type triangle curved surface according to claim 1 whirlpool generator formula pipe pipe wing heat exchanger is characterized in that described triangle curved surface whirlpool generator (1) limit vertical with the base is positioned at front end, 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 described curved surface 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, the major axis that it is characterized in that described oval convex closure (6) is consistent with flow direction, the center of oval convex closure (6) is on the longitudinal centre line of hole (8), and being positioned at hole (8) is on the concentric circular arc, and the ratio of the radius of the radius of circular arc and hole (8) is
r 2/
r=1.3-1.6; Described 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 is characterized in that described fin (4) upward is provided with flange boss (2) in the edge in hole (8), and 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 |
|---|---|
| CN102200405A true CN102200405A (en) | 2011-09-28 |
| CN102200405B CN102200405B (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN102200405B (en) |
Cited By (3)
| 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 |
| 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 |
| CN113834129A (en) * | 2020-06-08 | 2021-12-24 | 青岛海信日立空调系统有限公司 | Air conditioner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217999A (en) * | 1994-01-28 | 1995-08-18 | Noritz Corp | Heat exchanging fin |
| WO2003014649A1 (en) * | 2001-08-10 | 2003-02-20 | Yokohama Tlo Company Ltd. | Heat transfer device |
| 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 |
| 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217999A (en) * | 1994-01-28 | 1995-08-18 | Noritz Corp | Heat exchanging fin |
| WO2003014649A1 (en) * | 2001-08-10 | 2003-02-20 | Yokohama Tlo Company Ltd. | Heat transfer device |
| 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 |
| JP2009275967A (en) * | 2008-05-14 | 2009-11-26 | Panasonic Corp | Heat exchanger |
| 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 |
Cited By (3)
| 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 |
| 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 |
| CN113834129A (en) * | 2020-06-08 | 2021-12-24 | 青岛海信日立空调系统有限公司 | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102200405B (en) | 2012-12-05 |
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