CN103697633B - A kind of parallel-flow heat exchanger - Google Patents
A kind of parallel-flow heat exchanger Download PDFInfo
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- CN103697633B CN103697633B CN201310739298.3A CN201310739298A CN103697633B CN 103697633 B CN103697633 B CN 103697633B CN 201310739298 A CN201310739298 A CN 201310739298A CN 103697633 B CN103697633 B CN 103697633B
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- flat tube
- parallel
- heat exchanger
- fin
- isosceles trapezoid
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Abstract
The invention discloses a kind of parallel-flow heat exchanger, the fin comprising two headers, be arranged on the identical some flat tubes of structure between two headers and be located between adjacent flat tube, the header at the connection two ends, microchannel in flat tube, the cross section of described flat tube is the first isosceles trapezoid, narrower one end of adjacent two flat tubes is crisscross arranged, to make two faces relative between adjacent two flat tubes parallel; Described fin comprises fin body, and the shape of cross section of fin body is Type B, and described fin body is provided with some projections or pit.By technical scheme of the present invention, can prevent disengaging and the horizontal shift of fin between flat tube preferably, the condensed water being simultaneously also conducive to producing is got rid of along trapezoidal flat tube outer wall, adds the heat exchange surface of fin simultaneously, improves the performance of heat exchanger.
Description
Technical field
The present invention relates to field of heat exchangers, particularly relate to a kind of parallel-flow heat exchanger.
Background technology
Among air-cooled heat exchanger, parallel-flow heat exchanger manifests the equipment that between cold fluid and hot fluid, heat transmits, and is widely used in the fields such as HVAC.The basic structure form of usual parallel-flow heat exchanger is: two headers be parallel to each other, and is arranged on the parallel flat tube that some structures between header are consistent, and soldering between adjacent flat tube for the fin of heat exchange.So-called fin is: be arranged on and need to carry out heat exchanger surface, and have the heat transfer sheet area that thermal conductivity is comparatively strong, increase heat exchanger, improve the sheet metal of the functions such as heat exchange efficiency, fin can be corrugated or venetian blind type.
In prior art, flat tube be provided with passage, the uniform flat structure of thickness, easily there is the phenomenon such as fin disengaging, displacement of welding in using.Fin between flat tube common are corrugated, rectangle or n shape, and under certain space condition, the heat exchange surface of fin is limited, affects the service behaviour of heat exchanger.
Summary of the invention
The object of the invention is to propose a kind of parallel-flow heat exchanger, the phenomenon that fin comes off, is shifted can be reduced, increase the heat exchange surface of fin, improve the performance of heat exchanger.
For reaching this object, the present invention by the following technical solutions:
A kind of parallel-flow heat exchanger, the fin comprising two headers, be arranged on the identical some flat tubes of structure between two headers and be located between adjacent flat tube, the header at the connection two ends, microchannel in flat tube, the cross section of described flat tube is the first isosceles trapezoid, narrower one end of adjacent two flat tubes is crisscross arranged, to make two faces relative between adjacent two flat tubes parallel;
Described fin comprises fin body, and the shape of cross section of fin body is Type B, and described fin body is provided with a large amount of projections or pit.
Wherein, the height of described projection is less than or equal to 1.5 times of the thickness of fin body, and the degree of depth of described pit is less than or equal to 0.5 times of the thickness of fin body.
Wherein, the shape of described projection or pit is cylindrical or arc surfaced.
Wherein, the cross section of described flat tube is the first isosceles trapezoid, and the waist of this first isosceles trapezoid and the angle on base are more than or equal to 60 degree and are less than 90 degree.
Wherein, described flat tube comprises some microchannels, and the cross section of each microchannel is all in the second isosceles trapezoid, and the waist of described second isosceles trapezoid is parallel with the waist of the first isosceles trapezoid, and the end of described second isosceles trapezoid is parallel with the end of the first isosceles trapezoid.
Wherein, the waist of described each second isosceles trapezoid is equal with the thickness between flat tube outer wall, and the spacing between two microchannels adjacent in same flat tube equals described thickness.
Wherein, from the wider one end of described flat tube to narrower one end, the geometric sequence that the area of each second isosceles trapezoid that the cross section of each microchannel is tapers off successively.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention is by adopting cross section to be trapezoidal flat tube, and the mechanism that narrower one end of adjacent two flat tubes is crisscross arranged, and makes the height at the fin two ends between adjacent two flat tubes equal.Prevent disengaging and the horizontal shift of fin between flat tube preferably, the condensed water being simultaneously also conducive to producing is got rid of along trapezoidal flat tube outer wall; And add the heat exchange surface of fin, improve the performance of heat exchanger.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing described below is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the parallel-flow heat exchanger embodiment of the embodiment of the present invention.
Fig. 2 is the cross sectional representation of the flat tube of the parallel-flow heat exchanger of the embodiment of the present invention.
Fig. 3 is the cross sectional representation of the fin of the parallel-flow heat exchanger of the embodiment of the present invention.
Detailed description of the invention
Carry out clear, complete description below in conjunction with accompanying drawing of the present invention to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
Composition graphs 1-3, does description below to a kind of parallel-flow heat exchanger of the embodiment of the present invention.
The fin 3 comprising two headers 1 at the heat exchanger of the embodiment of the present invention, be arranged on the identical some flat tubes 2 of structure between two headers 1 and be located between adjacent flat tube 2, flat tube 2 is provided with some microchannels 4, and the microchannel 4 in flat tube 2 is communicated with the header at two ends.Further, in the present embodiment, the cross section of flat tube 2 is isosceles trapezoid, and namely the height of flat tube 2 one side is greater than the height of another side of flat tube 2, makes the end face of flat tube 2 and bottom surface all in inclined plane.Further, in the present embodiment, a narrower side of adjacent two flat tubes 2 is crisscross arranged, and to make two faces relative between adjacent two flat tubes 2 parallel, this structure is conducive to the overall volume reducing heat exchanger.The heat exchanger fin 3 of the present embodiment comprises fin body 31, and the shape of cross section of fin body 31 is Type B, and described fin body 31 is provided with a large amount of projections 32 or pit.Be Type B fin body 31 by shape of cross section, to increase bottom fin body 31 top 301 and flat tube and fin body 31 302 with the brazing contact area of flat tube, strengthen the steadiness that fin welds with flat tube.Meanwhile, relative to the fin body of common n shape or H-shaped, the shape of cross section that the present embodiment is selected is Type B fin body, can not increase the heat exchange area increasing fin under the prerequisite that fin body takes up room; Further, by establishing a large amount of projections or pit in fin body, the heat exchange area of fin is maximised.
In the embodiment of the present invention, the height h of the projection 32 that fin body 31 is arranged is less than or equal to 1.5 times of the thickness k of fin body 31, or the degree of depth of the pit that fin body 31 is arranged is less than or equal to 0.5 times of the thickness k of fin body 31.Preferably implemented at that time as one, the projection 31 that fin body 31 is arranged or the shape of pit can be cylindrical or arc surfaced.
Further, in the present embodiment heat exchanger, the waist of the first isosceles trapezoid of the cross section of flat tube 2 and the angle on base are more than or equal to 60 degree and are less than 90 degree, are preferably 75 degree.The cross section of each microchannel 4 of described flat tube 2 is all in the second isosceles trapezoid, and the waist of described second isosceles trapezoid is parallel with the waist of the first isosceles trapezoid; The end of described second isosceles trapezoid, is parallel with the end of the first isosceles trapezoid.
Preferably, in the present embodiment, the wall thickness of each microchannel 4 of flat tube 2 is identical, namely in the present embodiment, the waist of each second isosceles trapezoid that flat tube 2 each microchannel 4 cross section is is equal with the thickness L1 between flat tube 2 outer wall, spacing L2 between two microchannels 4 adjacent in same flat tube 2 equals described thickness L1, is conducive to the heat exchange of stream matchmaker in microchannel 4.
As a preferred embodiment of the present invention, in the heat exchanger of the present embodiment, the height of each second isosceles trapezoid that flat tube 2 each microchannel 4 cross section is is equal, make the heat transfer effect of heat exchanger evenly.
As another preferred embodiment of the present invention, in the heat exchanger of the present embodiment, from the wider one end of flat tube 2 to narrower one end, the geometric sequence that the area of each second isosceles trapezoid that the cross section of each microchannel 4 is tapers off successively, i.e. sequence (S1, S2, S3, S4, S5, S6, S7) geometric sequence for successively decreasing.
The parallel-flow heat exchanger of above-described embodiment, by adopting cross section to be trapezoidal flat tube, and the mechanism that narrower one end of adjacent two flat tubes is crisscross arranged, make the height at the fin two ends between adjacent two flat tubes equal.Prevent disengaging and the horizontal shift of fin between flat tube preferably, the condensed water being simultaneously also conducive to producing is got rid of along trapezoidal flat tube outer wall.And increase the heat exchange surface of fin, improve the performance of heat exchanger.
Above disclosedly be only present pre-ferred embodiments, certainly the right of the present invention can not be limited with this, therefore, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., still belong to the scope that the present invention is contained.
Claims (7)
1. a parallel-flow heat exchanger, the fin (3) comprising two headers (1), be arranged on the identical some flat tubes (2) of structure between two headers (1) and be located between adjacent flat tube (2), microchannel (4) in flat tube (2) is communicated with the header at two ends, it is characterized in that, the cross section of described flat tube (2) is the first isosceles trapezoid, narrower one end of adjacent two flat tubes (2) is crisscross arranged, to make two faces relative between adjacent two flat tubes (2) parallel;
Described fin (3) comprises fin body (31), and the shape of cross section of fin body (31) is Type B, and described fin body (31) is provided with some projections (32) or pit.
2. parallel-flow heat exchanger according to claim 1, is characterized in that, the height of described projection (32) is less than or equal to 1.5 times of the thickness of fin body (31), and the degree of depth of described pit is less than or equal to 0.5 times of the thickness of fin body (31).
3. parallel-flow heat exchanger according to claim 1, is characterized in that, the shape of described projection (32) or pit is cylindrical or arc surfaced.
4. parallel-flow heat exchanger according to claim 1, is characterized in that, the described waist of the first isosceles trapezoid and the angle on base are more than or equal to 60 degree and are less than 90 degree.
5. parallel-flow heat exchanger according to claim 4, it is characterized in that, described flat tube (2) comprises some microchannels (4), each microchannel (4) cross section is all in the second isosceles trapezoid, the waist of described second isosceles trapezoid is parallel with the waist of the first isosceles trapezoid, and the end of described second isosceles trapezoid is parallel with the end of the first isosceles trapezoid.
6. parallel-flow heat exchanger according to claim 5, it is characterized in that, the waist of the second isosceles trapezoid that described each microchannel (4) cross section is is equal with the thickness between flat tube (2) outer wall, and the spacing between two microchannels (4) adjacent in same flat tube (2) equals described thickness.
7. parallel-flow heat exchanger according to claim 5, is characterized in that, from described flat tube (2) wider one end to narrower one end, and the geometric sequence that the area of the second isosceles trapezoid that each microchannel (4) cross section is tapers off successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739298.3A CN103697633B (en) | 2013-12-27 | 2013-12-27 | A kind of parallel-flow heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739298.3A CN103697633B (en) | 2013-12-27 | 2013-12-27 | A kind of parallel-flow heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103697633A CN103697633A (en) | 2014-04-02 |
| CN103697633B true CN103697633B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310739298.3A Expired - Fee Related CN103697633B (en) | 2013-12-27 | 2013-12-27 | A kind of parallel-flow heat exchanger |
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| CN (1) | CN103697633B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895840B (en) * | 2019-05-05 | 2021-08-17 | 浙江三花智能控制股份有限公司 | Micro-channel flat tube and micro-channel heat exchanger |
| CN110411234A (en) * | 2019-08-01 | 2019-11-05 | 中国科学院力学研究所 | One kind being used for the thermostatically controlled finned heat exchanger of converter gas |
| CN112050663A (en) * | 2020-09-14 | 2020-12-08 | 刘延林 | Homogenization liquid cooling type aeration cooling device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363818A (en) * | 2000-12-01 | 2002-08-14 | Lg电子株式会社 | Tube plate structure for miniature multi-channel heat exchanger |
| CN101408387A (en) * | 2008-11-11 | 2009-04-15 | 姚新安 | Gravity type hot pipe trapezoid combined warming heat radiator |
| 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 |
| CN203231587U (en) * | 2013-04-01 | 2013-10-09 | 广东美的制冷设备有限公司 | Micro-channel parallel flow heat exchanger |
| CN203719248U (en) * | 2013-12-27 | 2014-07-16 | 无锡佳龙换热器股份有限公司 | Parallel flow heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3214373B2 (en) * | 1996-10-30 | 2001-10-02 | ダイキン工業株式会社 | Flat heat transfer tube |
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2013
- 2013-12-27 CN CN201310739298.3A patent/CN103697633B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363818A (en) * | 2000-12-01 | 2002-08-14 | Lg电子株式会社 | Tube plate structure for miniature multi-channel heat exchanger |
| CN101408387A (en) * | 2008-11-11 | 2009-04-15 | 姚新安 | Gravity type hot pipe trapezoid combined warming heat radiator |
| 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 |
| CN203231587U (en) * | 2013-04-01 | 2013-10-09 | 广东美的制冷设备有限公司 | Micro-channel parallel flow heat exchanger |
| CN203719248U (en) * | 2013-12-27 | 2014-07-16 | 无锡佳龙换热器股份有限公司 | Parallel flow heat exchanger |
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| CN103697633A (en) | 2014-04-02 |
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Address after: 214092 Jiangsu Province, Wuxi City Binhu District biomedical industrial park Xiaguang Road No. 5 Applicant after: WUXI JIALONG HEAT EXCHANGER STOCK COMPANY LTD. Address before: 214092 Jiangsu Province, Wuxi City Binhu District biomedical industrial park Xiaguang Road No. 5 Applicant before: WUXI JIALONG HEAT-EXCHANGER MANUFACTURING CO., LTD. |
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Granted publication date: 20151230 Termination date: 20161227 |