CN107664458A - The flat tube and fin structure of parallel-flow heat exchanger - Google Patents
The flat tube and fin structure of parallel-flow heat exchanger Download PDFInfo
- Publication number
- CN107664458A CN107664458A CN201710932345.4A CN201710932345A CN107664458A CN 107664458 A CN107664458 A CN 107664458A CN 201710932345 A CN201710932345 A CN 201710932345A CN 107664458 A CN107664458 A CN 107664458A
- Authority
- CN
- China
- Prior art keywords
- flat tube
- fin
- cross
- section
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000011148 porous material Substances 0.000 claims description 10
- 230000001174 ascending effect Effects 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 229910000679 solder Inorganic materials 0.000 abstract description 5
- 238000005476 soldering Methods 0.000 abstract description 5
- 238000005219 brazing Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
The invention discloses a kind of flat tube of parallel-flow heat exchanger and fin structure, some flat tubes are plugged on the header at both ends, fin is provided between adjacent flat tube, the wedge-shaped in cross-section of the flat tube, accordingly the fin between adjacent flat tube is in the wide grading structure in the narrow one end in one end.After assembling and soldering completion, fin can be caused to keep fixed in the horizontal, fin transverse shifting can be effectively prevented from and fallen off；Along fin by narrow end to wide end, contact surface between fin and flat tube is descending, solder joint between the two is also descending change, and the excess solder after being melted so in brazing process can fall along the tapered ramp smooth discharge of flat tube, reduce the possibility of its corrode product；During use, the condensed water on fin and on flat tube can fall along the tapered ramp smooth discharge of flat tube, reduce the possibility of its corrosion products.
Description
Technical field
The present invention relates to a kind of part of parallel-flow heat exchanger, the flat tube and wing of a kind of parallel-flow heat exchanger are specifically related to
Chip architecture.
Background technology
Parallel-flow heat exchanger is the equipment for realizing heat transfer between cold fluid and hot fluid, is widely used in the fields such as HVAC.
Parallel-flow heat exchanger generally comprises two headers being parallel to each other, be provided between two headers some it is substantially parallel
Heat radiating flat tube, between adjacent flat tube soldering have heat transmission fin.Fin is process by aluminum sheeting, how corrugated knot
The lateral surface of structure, its crest and trough, which supports, is located at up and down on two sides of flat tube, and final soldering is fixed.Existing heat radiating flat tube is more
It is the flat structure of consistency of thickness, so because fin and flat tube are simply abutted against tactile frictional force, in welding process or welds
The phenomenon that some fins come off can often occur afterwards, especially for some large-scale heat exchangers, then go to glue and mend fixed or secondary weldering
Connecing etc. can all occur welding the defects of weldering of unreliable and product is stifled higher, and the fraction defective of product is of a relatively high, also to be manufactured into
This corresponding increase.In addition in heat exchanger using after for many years, the solder joint of fin and flat tube be corroded or by vibrations cracking etc. also all
Fin can be come off.These can all reduce the heat exchange efficiency of whole heat exchanger.
The content of the invention
The present invention mainly solves the technical problem present in above-mentioned prior art, there is provided a kind of parallel-flow heat exchanger
Flat tube and fin structure.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：A kind of parallel-flow heat exchanger
Flat tube and fin structure, some flat tubes are plugged on the header at both ends, and fin, the horizontal stroke of the flat tube are provided between adjacent flat tube
Section is wedge shaped, and accordingly the fin between adjacent flat tube is in the cross section ripple of the wide grading structure, wherein fin in the narrow one end in one end
Shape meets：
In formula, L is the length of run of fin cross section waveform half period, and R is wing
The radius of curvature of piece cross section waveform, H are the height of fin cross section waveform, and α is that the inclination of fin cross section waveform main body is pressed from both sides
Angle.
Preferably, the slanted angle α very littles of usual fin cross section waveform main body, even 0 degree, the horizontal stroke of such fin
Section waveform can approx meets：L=R π+H-2R.
In the flat tube of the wedge-shaped in cross-section, along the gradual change direction of flat tube from narrow to wide, the cross section of microchannel pore
It is ascending；And along the ascending of microchannel pore cross section, the wall thickness of flat tube gradually increases.
Preferably, gradually increase meets in formula the wall thickness of the flat tube, k is the breakdown strength of design
Value, δ are the wall thickness that flat tube corresponds to microchannel pore, and d is the diameter of the microchannel pore, and σ is the intensity of material.
Flat tube is designed to the structure of wedge-shaped in cross-section by the present invention, and accordingly the fin between adjacent flat tube is narrow by one in one end
Wide structure is held, after assembling and soldering completion, fin can be caused to keep fixed in the horizontal, fin horizontal stroke can be effectively prevented from
Fallen off to movement；Along fin by narrow end to wide end, the contact surface between fin and flat tube is descending, weldering between the two
Point and descending change, the excess solder after being melted so in brazing process can be smooth along the tapered ramp of flat tube
Discharge, reduce the possibility of its corrode product；During use, the condensed water on fin and on flat tube can be along flat tube
Tapered ramp smooth discharge falls, and reduces the possibility of its corrosion products.These can ensure that fin will not fall off and product leakage, protect
The heat exchange efficiency of whole heat exchanger is held, overall processing manufacture is also convenient for a lot, to improve the acceptance rate of the assembling processing of heat exchanger.
Have the characteristics that simple in construction, reasonable in design.
Brief description of the drawings
Fig. 1 is a kind of structural representation of present invention heat exchanger；
Fig. 2 is a kind of structural representation of flat tube and fin of the present invention；
Fig. 3 is a kind of structural representation of fin of the present invention；
Fig. 4 is a kind of structural representation of fin cross section of the present invention waveform.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment：Referring to Fig. 1 and Fig. 2, present invention heat exchanger includes some flat tubes 2 being plugged on both ends header 1, phase
It is provided with fin 3 between adjacent flat tube 2, the microchannel 4 on flat tube 2 connects the header 1 at both ends.The wherein wedge-shaped in cross-section of flat tube 2,
Accordingly the fin 3 between adjacent flat tube 2 meets in the wide structure in the narrow one end in one end, the cross section waveform of wherein fin：
In formula, L is fin cross section waveform half period
Length of run, R are the radius of curvature of fin cross section waveform, and H is the height of fin cross section waveform, and α is fin cross section ripple
The slanted angle of shape main body.The normally slanted angle α very littles of fin cross section waveform main body, even 0 degree, such fin
Cross section waveform can approx meets：L=R π+H-2R.The fin global consistency of so machine-shaping is good, is not in
The bad phenomenon such as bending or sector.In the flat tube of wedge-shaped in cross-section, along the gradual change direction of flat tube from narrow to wide, microchannel pore
Cross section it is ascending；And along the ascending of microchannel pore cross section, the wall thickness of flat tube gradually increases, the wall of flat tube
Thick gradually increase meets in formula that k is the breakdown strength value of design, and δ is the wall thickness that flat tube corresponds to microchannel pore, and d is the microchannel
The diameter in hole, σ are the intensity of material.On the basis of radiating efficiency is taken into full account, the mechanical strength of flat tube in turn ensure that.
Flat tube is designed to the structure of wedge-shaped in cross-section by the present invention, and accordingly the fin between adjacent flat tube is narrow by one in one end
Wide structure is held, after assembling and soldering completion, fin can be caused to keep fixed in the horizontal, fin horizontal stroke can be effectively prevented from
Fallen off to movement；Along fin by narrow end to wide end, the contact surface between fin and flat tube is descending, weldering between the two
Point and descending change, the excess solder after being melted so in brazing process can be smooth along the tapered ramp of flat tube
Discharge, reduce the possibility of its corrode product；During use, the condensed water on fin and on flat tube can be along flat tube
Tapered ramp smooth discharge falls, and reduces the possibility of its corrosion products.These can ensure that fin will not fall off and product leakage, protect
The heat exchange efficiency of whole heat exchanger is held, overall processing manufacture is also convenient for a lot, to improve the acceptance rate of the assembling processing of heat exchanger.
Claims (4)
1. the flat tube and fin structure of a kind of parallel-flow heat exchanger, some flat tubes are plugged on the header at both ends, adjacent flat tube
Between be provided with fin, it is characterised in that the wedge-shaped in cross-section of the flat tube, accordingly the fin between adjacent flat tube in one end it is narrow by one
Wide grading structure is held, the cross section waveform of wherein fin meets：
In formula, L is the length of run of fin cross section waveform half period, and R is
The radius of curvature of fin cross section waveform, H are the height of fin cross section waveform, and α is the inclination of fin cross section waveform main body
Angle.
2. the flat tube and fin structure of parallel-flow heat exchanger according to claim 1, it is characterised in that the horizontal stroke of the fin
Section waveform meets：L=R π+H-2R.
3. the flat tube and fin structure of parallel-flow heat exchanger according to claim 1, it is characterised in that the cross section is in
It is ascending along the gradual change direction of flat tube from narrow to wide, the cross section of microchannel pore in the flat tube of wedge shape；And lead to along micro-
Road hole cross section it is ascending, the wall thickness of flat tube gradually increases.
4.The flat tube and fin structure of parallel-flow heat exchanger according to claim 3, it is characterised in that institute
The gradual increase of wall thickness for stating flat tube meets in formula that k is the breakdown strength value of design, and δ corresponds to the wall thickness of microchannel pore, d for flat tube
For the diameter of the microchannel pore, σ is the intensity of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710932345.4A CN107664458A (en) | 2017-10-10 | 2017-10-10 | The flat tube and fin structure of parallel-flow heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710932345.4A CN107664458A (en) | 2017-10-10 | 2017-10-10 | The flat tube and fin structure of parallel-flow heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107664458A true CN107664458A (en) | 2018-02-06 |
Family
ID=61097653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710932345.4A Withdrawn CN107664458A (en) | 2017-10-10 | 2017-10-10 | The flat tube and fin structure of parallel-flow heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107664458A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264674A (en) * | 1998-03-16 | 1999-09-28 | Samsung Electronics Co Ltd | Parallel flow heat exchanger |
| CN101929820A (en) * | 2010-09-29 | 2010-12-29 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structures of parallel flow heat exchanger |
| CN101943535A (en) * | 2010-09-29 | 2011-01-12 | 浙江金宸三普换热器有限公司 | Oblate pipe and fin structure for parallel flow heat exchanger |
| CN201828177U (en) * | 2010-09-29 | 2011-05-11 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structure of parallel flow heat exchanger |
| CN201844728U (en) * | 2010-09-29 | 2011-05-25 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structure of heat exchanger |
-
2017
- 2017-10-10 CN CN201710932345.4A patent/CN107664458A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264674A (en) * | 1998-03-16 | 1999-09-28 | Samsung Electronics Co Ltd | Parallel flow heat exchanger |
| CN101929820A (en) * | 2010-09-29 | 2010-12-29 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structures of parallel flow heat exchanger |
| CN101943535A (en) * | 2010-09-29 | 2011-01-12 | 浙江金宸三普换热器有限公司 | Oblate pipe and fin structure for parallel flow heat exchanger |
| CN201828177U (en) * | 2010-09-29 | 2011-05-11 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structure of parallel flow heat exchanger |
| CN201844728U (en) * | 2010-09-29 | 2011-05-25 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structure of heat exchanger |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180206 |
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| WW01 | Invention patent application withdrawn after publication |