CN105758246A - Heat exchanger fin and heat exchanger - Google Patents
Heat exchanger fin and heat exchanger Download PDFInfo
- Publication number
- CN105758246A CN105758246A CN201410770726.3A CN201410770726A CN105758246A CN 105758246 A CN105758246 A CN 105758246A CN 201410770726 A CN201410770726 A CN 201410770726A CN 105758246 A CN105758246 A CN 105758246A
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- catch
- heat exchanger
- heat exchange
- exchange pore
- exchanger fin
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Abstract
The invention provides a heat exchanger fin and a heat exchanger. The heat exchanger fin comprises a fin body (10) and heat exchanging pipe holes (20) formed on the fin body (10), wherein two sides of leeward side of each heat exchange pipe hole (20) are symmetrically provided with two groups of arc-shaped baffle sheet sets; each baffle sheet of the two groups of baffle sheet sets vertically turn up from the fin body (10); each group of baffle sheet set is formed by a first baffle sheet (30) and a second baffle sheet (40); a first air flow channel (31) is formed between the first baffle sheet (30) and the heat exchanging pipe hole (20); air flows can be guided by the channel to a leeward area of the heat exchanging pipe hole (20); according to an air flow direction, the second baffle sheet (40) is arranged on downstream of the first baffle sheet (30) and forms a first retraction air absorbing channel (41) with the first baffle sheet (30); and the channel can retract along the air flow direction and guide introduced air flows to the leeward area of the heat exchanging pipe hole (20). According to the heat exchanger fin, fluid can be prevented staying in a low-speed area of a leeward side of a curve vortex generator and prevented from flowing back to a wake area after flowing through the heat exchanging pipe holes.
Description
Technical field
The present invention relates to technical field of heat exchange, especially relate to a kind of heat exchanger fin and heat exchanger.
Background technology
Finned round tube or ellipse tube type heat exchanger are a kind of heat exchanger forms widely used in refrigeration, field of air conditioning.All there is the instant heating blind zone, backflow tail dead band of low speed when refrigeration and heating condition are run after pipe or elliptical tube outside Tube Sheet of Heat Exchanger, the existence in this heat shielding district hinders the heat exchange fully each other of subregion in copper pipe, part fin and air.The air pressure disequilibrium additionally caused due to boundary layer separation after last root pipe of heat exchanger or elliptical tube forms toll bar vortex Shedding Vortex, one of aerodynamic noise source that this Shedding Vortex is main when being heat exchanger work.
A kind of combined triangular curved vortex generator formula circular pipe pipe-fin heat exchanger disclosed in Chinese invention patent CN201110073886, this heat exchanger provides a kind of curved-surface vortex generator namely at the triangular curved vortex generator in the both sides punching press of pipe center line downstream, make between pipe and vortex generators, form a fluid passage, segment fluid flow arrives pipe wake zone through this passage, fluid on rear side of pipe is inhibited to separate so that after pipe, velocity wake region reduces.But this curved-surface vortex generator arc chord angle is 50 °～60 °, curved-surface vortex arc radius is 1.15～1.35 times of circle hole radius, the cross section in uprush direction is big, add a large amount of windage (Fw=1/16 A Cw v2), and the low regime of the leeward side formation larger area at eddy generator, causing boundary region secondary separation, in low regime, heat transfer effect is poor.
Summary of the invention
It is an object of the invention to provide a kind of heat exchanger fin and heat exchanger, it is possible to effectively suppress fluid in the low regime of the leeward side of curved-surface vortex generator, simultaneously fluid low speed backflow tail district after reduction heat exchange pore.
For solving above-mentioned technical problem, as one aspect of the present invention, provide a kind of heat exchanger fin, including fin body and the heat exchange pore being arranged in fin body, the leeward side lateral symmetry of heat exchange pore is provided with two groups of arc block plate groups, and each catch of two groups of catch groups is dug fin body, and often group catch group includes at least the first catch and the second catch, the first gas channel is formed, the leeward district of the air-flow guiding heat exchange pore that this passage is introduced between first catch and heat exchange pore；According to gas flow direction, the second catch is positioned at the first catch downstream, and and between the first catch, form the first contraction air intake passage, the air-flow that this passage is introduced into leads the leeward district of described heat exchange pore (20).
Further, the length of the second catch is less than the length of the first catch.
Further, often group catch group also includes third gear sheet, according to gas flow direction, third gear sheet is positioned at the second catch downstream, and and the second catch between formed second contraction air intake passage, the leeward district of the air-flow described heat exchange pore (20) of guiding that this passage is introduced into, and the length of third gear sheet is less than the length of the second catch.
Further, often group catch group also includes at least one middle catch, and middle catch is arranged between the second catch and third gear sheet, and and is formed respectively between the second catch and third gear sheet towards leeward district and the middle air intake passage that reduces along gas flow direction.
Further, heat exchange pore is elliptical aperture or circular hole, the starting point of the second catch and heat exchange pore along the starting point more than the first catch of the distance d2 between the centrage of gas flow direction and heat exchange pore along the distance d1 between the centrage of gas flow direction.
Further, the starting point of third gear sheet and heat exchange pore along the starting point more than the second catch of the distance d3 between the centrage of gas flow direction and heat exchange pore along the distance d2 between the centrage of gas flow direction.
Further, heat exchange pore is elliptical aperture, arc chord angle β=5 °～20 ° of the first catch, and arc radius is 0.1～0.4 times of the short axle of elliptical aperture, arc chord angle β=5 °～20 ° of the second catch, and arc radius is 0.1～0.4 times of the short axle of elliptical aperture.
Further, heat exchange pore is elliptical aperture, arc chord angle β=5 °～20 ° of third gear sheet, and arc radius is 0.1～0.4 times of the short axle of elliptical aperture.
Further, the first gas channel is the contraction gas channel along gas flow direction.
According to a further aspect in the invention, it is provided that a kind of heat exchanger, including heat exchanger fin, this heat exchanger fin is above-mentioned heat exchanger fin.
The heat exchanger fin of the present invention, including fin body and the heat exchange pore being arranged in fin body, the leeward side lateral symmetry of heat exchange pore is provided with two groups of arc block plate groups, each catch of two groups of catch groups is vertically dug fin body, often group catch group includes at least the first catch and the second catch, first gas channel in leeward district towards heat exchange pore is formed between first catch and heat exchange pore, it is positioned at the first catch rear along gas flow direction the second catch, and and the first catch between formed towards leeward district and along gas flow direction first shrink air intake passage.When the starting point part of airflow passes the second catch, airflow direction changes, flow into the first catch and shrink in air intake passage with the first of second gear sheet formation, due to channel narrows, the fluid of flow channel accelerates, channel inner pressure reduces, pressure differential is formed with the second catch initiating terminal lateral fluid, second catch initiating terminal lateral fluid is accelerated to be sucked the first contraction air intake passage and is delivered to heat exchanger tube hole surface, heat exchanger tube hole surface boundary layer fluid is made to accelerate, first shrinks the low regime of the first catch leeward side in air intake passage, fluid low speed backflow tail district after reduction heat exchange pore simultaneously.
Accompanying drawing explanation
Fig. 1 diagrammatically illustrates the structure chart of the heat exchanger fin according to the first embodiment of the present invention；
Fig. 2 diagrammatically illustrates the axonometric chart of the heat exchanger fin according to the first embodiment of the present invention；
Fig. 3 diagrammatically illustrates the structure chart of heat exchanger fin according to the second embodiment of the present invention；
Fig. 4 diagrammatically illustrates the enlarged drawing at the L place according to Fig. 3；
Fig. 5 diagrammatically illustrates the structure chart of heat exchanger fin according to the third embodiment of the invention；
Fig. 6 diagrammatically illustrates the enlarged drawing at the M place according to Fig. 5.
Accompanying drawing labelling in figure: 10, fin body；20, heat exchange pore；30, the first catch；40, the second catch；50, third gear sheet；60, middle catch；31, the first gas channel；41, first shrinks air intake passage；51, second shrinks air intake passage；61, middle air intake passage.
Detailed description of the invention
Hereinafter embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
In figure, the direction of arrow represents gas flow direction.
Refer to Fig. 1 to 6, according to embodiments of the invention, heat exchanger fin includes fin body 10 and the heat exchange pore 20 being arranged in fin body 10, the leeward side lateral symmetry of heat exchange pore 20 is provided with two groups of arc block plate groups, each catch of two groups of catch groups is dug fin body 10, often group catch group includes at least the first catch 30 and the second catch 40, first gas channel 31 in leeward district towards heat exchange pore 20 is formed between first catch 30 and heat exchange pore 20, it is positioned at the first catch 30 rear along gas flow direction the second catch 40, and and the first catch 30 between formed towards leeward district and along gas flow direction reduce first shrink air intake passage 41.
When the starting point part of airflow passes the second catch 40, airflow direction changes, flow in the first contraction air intake passage 41 of the first catch 30 and the formation of the second catch 40, due to channel narrows, the fluid of flow channel accelerates, channel inner pressure reduces, pressure differential is formed with the second catch 40 initiating terminal lateral fluid, second catch 40 initiating terminal lateral fluid is accelerated to be sucked the first contraction air intake passage 41 and is delivered to heat exchange pore 20 surface, heat exchange pore 20 surface-boundary layer fluid is made to accelerate, the effect of boundary layer separation after strengthening suppression heat exchange pore 20, low speed backflow tail district after reduction heat exchange pore 20, in first contraction air intake passage 41, the low regime of the first catch 30 leeward side also disappears simultaneously.Furthermore, owing to the second catch 40 length is less than the first catch 30, smaller, the low-speed region at the second catch 40 leeward side is greatly reduced, and owing to catch group front face area reduces, the windage that catch group is formed is substantially reduced.
In conjunction with referring to shown in Fig. 1 and Fig. 2, according to the first embodiment of the present invention, often group catch group also includes third gear sheet 50, third gear sheet 50 is positioned at the second catch 40 rear, and and the second catch 40 between formed towards leeward district and along gas flow direction convergent second shrink air intake passage 51, boundary region separating effect after strengthening suppression heat exchange pore 20 further, low speed backflow tail district after reduction heat exchange pore 20, and the length of third gear sheet 50 is less than the length of the second catch 40.
For the second catch 40, the length of third gear sheet 50 reduces, the effect similar with the second catch 40 can be played on the one hand, the fluid low regime making the second catch 40 leeward side in the second contraction air intake passage 51 eliminates, thus effectively suppressing fluid in the boundary region secondary separation of the second catch 40 leeward side, the low regime of third gear sheet 50 leeward side can also be greatly reduced on the other hand, reduce the low regime at whole catch group rear on the whole, improve the heat exchange efficiency of heat exchanger fin.
In the present embodiment, heat exchange pore 20 is elliptical aperture or circular hole, the line at the starting point of the first catch 30 and heat exchange pore 20 center and come open bevel α=90 °～120 ° of flow path direction, the starting point of the second catch 40 and heat exchange pore 20 along the starting point more than the first catch 30 of the distance d2 between the centrage of gas flow direction and heat exchange pore 20 along the distance d1 between the centrage of gas flow direction, the starting point that can be effectively ensured the second catch 40 is not covered by the first catch 30 so that air-flow can flow through the starting point of the second catch 40 smoothly.
Based on identical reason, the starting point of third gear sheet 50 and heat exchange pore 20 along the starting point more than the second catch 40 of the distance d3 between the centrage of gas flow direction and heat exchange pore 20 along the distance d2 between the centrage of gas flow direction.
Heat exchange pore 20 is elliptical aperture, first catch 30 arc chord angle β=5 °～20 °, arc radius is 0.1～0.4 times of the short axle of elliptical aperture, second catch 40 arc chord angle β=5 °～20 °, arc radius is 0.1～0.4 times of the short axle of elliptical aperture, range beta=5 °～20 ° of third gear sheet 50 arc chord angle, arc radius is 0.1～0.4 times of the short axle of elliptical aperture.For vortex generator of the prior art, the cross-sectional area in the catch group uprush direction of the present invention is greatly reduced, when face velocity is the same, the windage formed is substantially reduced, therefore the fluency of gas flowing can be improved, reduce the adverse effect that gas flowing is produced by catch as much as possible, reduce the area of heat exchange pore leeward side low pressure reflow zone, improve the heat exchange efficiency between heat exchanger fin and air-flow.
Preferably, the first gas channel 31 is the contraction gas channel along gas flow direction, it is possible to further enhance the suction effect to the second catch 40 initiating terminal lateral fluid, fluid low speed recirculating zone after reduction pipe.
In conjunction with referring to shown in Fig. 3 and Fig. 4, for the second embodiment of the present invention, in the present embodiment, it is essentially identical with the structure of first embodiment, is different in that, in the present embodiment, heat exchange pore 20 is circular.
In conjunction with referring to shown in Fig. 5 and Fig. 6, for the third embodiment of the present invention, in the present embodiment, it is essentially identical with first embodiment, being different in that, in the present embodiment, often group catch group also includes at least one middle catch 60, middle catch 60 is arranged between the second catch 40 and third gear sheet 50, and and is formed respectively between the second catch 40 and third gear sheet 50 towards leeward district and the middle air intake passage 61 that reduces along gas flow direction.The structure of the structure of this middle catch 60 and the second catch 40 is substantially the same.
The effect of this middle catch 60 is in that, reduces the leeward side air-flow low regime of heat exchange pore 20 further so that air-flow can carry out abundant heat exchange between the leeward side of heat exchange pore 20 and heat exchange pore 20.When the pipe back zone of heat exchange pore 20 is longer, it is possible to add middle catch 60 according to real needs, after making heat exchange pore 20, low speed backflow tail district is less.
According to a further aspect in the invention, it is provided that a kind of heat exchanger, including heat exchanger fin, this heat exchanger fin is above-mentioned heat exchanger fin.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. a heat exchanger fin, including fin body (10) and the heat exchange pore (20) that is arranged in described fin body (10), it is characterized in that, the leeward side lateral symmetry of described heat exchange pore (20) is provided with two groups of arc block plate groups, each catch of catch group described in two groups is dug described fin body (10), often organize described catch group and include at least the first catch (30) and the second catch (40), the first gas channel (31) is formed between described first catch (30) and described heat exchange pore (20), the leeward district of the air-flow described heat exchange pore (20) of guiding that this passage is introduced into；According to gas flow direction, described second catch (40) is positioned at the downstream of described first catch (30), and and described first catch (30) between form the first contraction air intake passage (41), air-flow that this passage is introduced into leads the leeward district of described heat exchange pore (20).
2. heat exchanger fin according to claim 1, it is characterised in that the length of described second catch (40) is less than the length of described first catch (30).
3. heat exchanger fin according to claim 1, it is characterized in that, often organize described catch group and also include third gear sheet (50), according to gas flow direction, described third gear sheet (50) is positioned at described second catch (40) downstream, and and described second catch (40) between formed second contraction air intake passage (51), the leeward district of the air-flow described heat exchange pore (20) of guiding that this passage is introduced into, and the length of described third gear sheet (50) is less than the length of described second catch (40).
4. heat exchanger fin according to claim 3, it is characterized in that, often organize described catch group and also include at least one middle catch (60), described middle catch (60) is arranged between described second catch (40) and described third gear sheet (50), and and is formed respectively between described second catch (40) and described third gear sheet (50) towards described leeward district and the middle air intake passage (61) that reduces along gas flow direction.
5. heat exchanger fin according to claim 1, it is characterized in that, described heat exchange pore (20) is elliptical aperture or circular hole, the starting point of described second catch (40) and described heat exchange pore (20) along the starting point more than described first catch (30) of the distance d2 between the centrage of gas flow direction and described heat exchange pore (20) along the distance d1 between the centrage of gas flow direction.
6. heat exchanger fin according to claim 3, it is characterized in that, the starting point of described third gear sheet (50) and described heat exchange pore (20) along the starting point more than described second catch (40) of the distance d3 between the centrage of gas flow direction and described heat exchange pore (20) along the distance d2 between the centrage of gas flow direction.
7. heat exchanger fin according to claim 1, it is characterized in that, described heat exchange pore (20) is elliptical aperture, arc chord angle β=5 °～20 ° of described first catch (30), arc radius is 0.1～0.4 times of the short axle of elliptical aperture, arc chord angle β=5 °～20 ° of described second catch (40), arc radius is 0.1～0.4 times of the short axle of elliptical aperture.
8. heat exchanger fin according to claim 3, it is characterised in that described heat exchange pore (20) is elliptical aperture, arc chord angle β=5 °～20 ° of described third gear sheet (50), arc radius is 0.1～0.4 times of the short axle of elliptical aperture.
9. heat exchanger fin according to claim 1, it is characterised in that described first gas channel (31) is the contraction gas channel along gas flow direction.
10. a heat exchanger, including heat exchanger fin, it is characterised in that described heat exchanger fin is the heat exchanger fin according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410770726.3A CN105758246B (en) | 2014-12-15 | 2014-12-15 | Heat exchanger fin and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410770726.3A CN105758246B (en) | 2014-12-15 | 2014-12-15 | Heat exchanger fin and heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105758246A true CN105758246A (en) | 2016-07-13 |
| CN105758246B CN105758246B (en) | 2019-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410770726.3A Active CN105758246B (en) | 2014-12-15 | 2014-12-15 | Heat exchanger fin and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105758246B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001147087A (en) * | 1999-11-19 | 2001-05-29 | Fujitsu General Ltd | Fin-tube type of heat exchanger |
| JP2002156192A (en) * | 2000-11-20 | 2002-05-31 | Sharp Corp | Heat exchanger |
| CN2530236Y (en) * | 2001-11-23 | 2003-01-08 | 财团法人工业技术研究院 | Novel fin with rib shape vortex generator |
| CN101208575A (en) * | 2005-07-01 | 2008-06-25 | 大金工业株式会社 | Fin tube heat exchanger |
| CN204007275U (en) * | 2014-05-30 | 2014-12-10 | 田洺菲 | With the H shape finned tube of long direction eddy generator |
-
2014
- 2014-12-15 CN CN201410770726.3A patent/CN105758246B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001147087A (en) * | 1999-11-19 | 2001-05-29 | Fujitsu General Ltd | Fin-tube type of heat exchanger |
| JP2002156192A (en) * | 2000-11-20 | 2002-05-31 | Sharp Corp | Heat exchanger |
| CN2530236Y (en) * | 2001-11-23 | 2003-01-08 | 财团法人工业技术研究院 | Novel fin with rib shape vortex generator |
| CN101208575A (en) * | 2005-07-01 | 2008-06-25 | 大金工业株式会社 | Fin tube heat exchanger |
| CN204007275U (en) * | 2014-05-30 | 2014-12-10 | 田洺菲 | With the H shape finned tube of long direction eddy generator |
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| Publication number | Publication date |
|---|---|
| CN105758246B (en) | 2019-06-11 |
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