CN212512655U - Bidirectional staggered fin for heat exchanger - Google Patents
Bidirectional staggered fin for heat exchanger Download PDFInfo
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- CN212512655U CN212512655U CN202020637188.1U CN202020637188U CN212512655U CN 212512655 U CN212512655 U CN 212512655U CN 202020637188 U CN202020637188 U CN 202020637188U CN 212512655 U CN212512655 U CN 212512655U
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Abstract
The utility model relates to a heat exchange equipment field, concretely relates to two-way crisscross fin is used to heat exchanger. The fin comprises a fin body, wherein the fin body comprises a plurality of straight plate parts and a plurality of connecting parts, the straight plate parts and the connecting parts are arranged in a staggered mode and are connected in a sealing mode, and a flow channel is formed by the adjacent two straight plate parts and the connecting parts between the two straight plate parts; flow channel that forms including the boss in this scheme between the adjacent straight line portion has the function of the pressure between the different runners of real-time equilibrium, secondly can destroy the continuity of boundary layer, thereby promotes fluidic turbulent disturbance and increases fluidic mixing and heat exchange, and the boss that sets up simultaneously can increase secondary heat transfer area.
Description
Technical Field
The utility model relates to a heat exchange equipment field, concretely relates to two-way crisscross fin is used to heat exchanger.
Background
The heat exchanger is a heat exchange device which is used for transferring heat from a heat medium to a cold medium to meet the heat management requirement of the device, the plate-fin heat exchanger is characterized in that fins are arranged between two adjacent partition plates to form a secondary heat transfer surface, the structural characteristics of the secondary heat transfer surface determine the heat transfer characteristics and the flow resistance characteristics of a fluid channel, and the commonly used fins are straight fins.
Disclosure of Invention
To the problem mentioned among the prior art, the utility model provides a two-way crisscross fin is used to heat exchanger compares in straight fin, the utility model has the characteristics of stable in structure, fatigue strength are high, the radiating effect is good.
The utility model relates to a bidirectional staggered fin for a heat exchanger, which comprises a fin main body, wherein the fin main body comprises a plurality of straight plate parts and a plurality of connecting parts, the straight plate parts are staggered with the connecting parts and are hermetically connected with each other, and the connecting parts between two adjacent straight plate parts and the two straight plate parts form a flow channel; all be equipped with the boss on the straight plate portion, the boss on its adjacent straight plate portion is sharp symmetry, the boss includes boss and lower boss, and straight plate portion one side is equipped with the boss, and the opposite side is equipped with down the boss, goes up the boss and is central symmetry with lower boss.
Preferably, the ratio of the height of the boss to the length of the straight portion is not higher than 0.5.
Preferably, the boss extends along the length direction of the straight plate part, the width of the boss is smaller than that of the straight plate part, and the length of the boss is smaller than that of the straight plate part.
Preferably, the outer surface of the boss is circular arc-shaped, or circular, or oval.
Preferably, the adjacent straight plate portions are arranged obliquely, and the connecting portion is located on the side of the two straight plate portions close to each other.
Preferably, the connecting portion is arc-shaped, and the inner arc surface of the connecting portion faces the side of the two straight plate portions away from each other.
Compared with the prior art, the invention has the following technical effects:
in the scheme, the flow channel formed by the bosses is arranged between the adjacent straight line parts, so that the function of balancing the pressure between different flow channels in real time is realized, the continuity of a boundary layer can be damaged, the turbulent disturbance of fluid is promoted, the mixing and heat exchange of the fluid are increased, and the secondary heat exchange area can be increased by the bosses arranged at the same time; the utility model discloses form a three-dimensional spatial structure of boss formation on fin microstructure unit on the fin, increased the deformation recovery ability and the anti yawing force ability of fin, macroscopically appear to have stronger structural stability and fatigue resistance ability for the heat exchanger of this form fin, increase the life of heat exchanger.
Drawings
Fig. 1 is a schematic view of the three-dimensional structure of the present invention.
Fig. 2 is a schematic plan view of the present invention.
Fig. 3 is an enlarged schematic view of a point a in fig. 1.
Fig. 4 is an enlarged schematic view of B and C in fig. 2.
Fig. 5 is a graph of experimental data in this example.
Reference numerals: 1-a straight plate portion; 2-a connecting part; 3-mounting a boss; 4-lower boss.
Detailed Description
Examples
The utility model relates to a two-way staggered fin for a heat exchanger, which comprises a fin main body, wherein the fin main body comprises a plurality of straight plate parts 1 and a plurality of connecting parts 2, the straight plate parts 1 and the connecting parts 2 are staggered and hermetically connected, and two adjacent straight plate parts 1 and the connecting parts 2 positioned between the two straight plate parts 1 form a flow channel; all be equipped with the boss on the straight board portion 1, the boss on its adjacent straight board portion 1 is sharp symmetry, the boss includes boss 3 and lower boss 4, and 1 one side of straight board portion is equipped with boss 3, and the opposite side is equipped with down boss 4, goes up boss 3 and is central symmetry with lower boss 4. The ratio of the height of the boss to the length of the straight line part is not higher than 0.5. The boss extends along 1 length direction of straight plate portion and sets up, and the boss width is less than 1 width of straight plate portion, and boss length is less than 1 length of straight plate portion. The outer surface of the boss is arc-shaped, circular or elliptical. The adjacent straight plate parts 1 are obliquely arranged, and the connecting part 2 is positioned on one side of the two straight plate parts 1 which are close to each other. The connecting part 2 is arc-shaped, and the inner arc surface of the connecting part 2 faces to the side of the two straight plate parts 1 which are far away from each other.
In the embodiment, the bidirectional staggered fin for the heat exchanger is formed by adopting a stamping processing mode, the overall structure of the fin main body is firm and reliable, the processing and the manufacturing are convenient, each straight plate part 1 is provided with the boss, the adjacent straight plate parts 1 and the connecting parts 2 positioned between the straight plate parts 1 form the flow channel, the flow channel comprises the lower boss 4 of one straight plate part 1, the upper boss 3 of the other straight plate part 1 and the parts between the upper boss 3 and the lower boss 4, the boundary layer is effectively damaged by adopting the arrangement, so that the airflow disturbance enhanced heat exchange is increased, the flow resistance can be effectively controlled by the smooth transition of the boss and the fin plane, meanwhile, the secondary heat exchange area of the fin is increased by the whole boss structure, the single upper boss 3 or lower boss 4 and the straight line parts form a similar three-dimensional structure, the structural stability of the fin is increased, the height, the thickness and, The length, the width, the shape of the outer surface of the boss and the distance between the bosses need to be designed correspondingly according to performance requirements of flow, heat exchange and the like, different structural sizes have different performance performances in different fluids and flow states, and the design is optimized according to actual conditions in the specific implementation process.
In the experimental process, the fin of the scheme with the same specification and size is compared with the straight fin in the prior art, and the result is as follows:
compared with the traditional straight fins, the heat exchange power and the heat exchange coefficient are both obviously improved;
in another experiment, stability comparison was performed by modeling, as shown in fig. 5, the lower partition a of the modeled model was fixed, a lateral force F was applied to the side of the upper partition B to perform numerical simulation, and data comparison was performed with straight fins, and the results showed that the displacement of the upper partition B of the bidirectional staggered fin according to the present solution was 0.0378mm, and the displacement of the upper partition B of the straight fins was 0.2052mm, thus demonstrating that the fin according to the present solution had superior structural stability compared to straight fins.
Claims (6)
1. The bidirectional staggered fin for the heat exchanger comprises a fin main body and is characterized in that the fin main body comprises a plurality of straight plate parts (1) and a plurality of connecting parts (2), the straight plate parts (1) and the connecting parts (2) are arranged in a staggered mode and are connected in a sealing mode, and two adjacent straight plate parts (1) and the connecting parts (2) located between the two straight plate parts (1) form a flow channel;
all be equipped with the boss on straight board portion (1), the boss on its adjacent straight board portion (1) is sharp symmetry, the boss includes boss (3) and lower boss (4), and straight board portion (1) one side is equipped with boss (3), and the opposite side is equipped with down boss (4), goes up boss (3) and is central symmetry with lower boss (4).
2. The fin of claim 1, wherein the ratio of the height of the boss to the length of the straight portion is not higher than 0.5.
3. The fin of claim 1, wherein the bosses extend along the length direction of the straight plate part (1), and the width of the bosses is smaller than that of the straight plate part (1), and the length of the bosses is smaller than that of the straight plate part (1).
4. The heat exchanger fin staggered bi-directionally according to claim 1, wherein the outer surface of the boss is rounded, or oval.
5. The fin for a heat exchanger according to claim 1, wherein the adjacent straight plate portions (1) are arranged obliquely, and the connecting portion (2) is located on the side of the two straight plate portions (1) adjacent to each other.
6. The fin of claim 1, wherein the connecting portion (2) is curved, and the inner curved surface of the connecting portion (2) faces the sides of the two straight plates (1) away from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020637188.1U CN212512655U (en) | 2020-04-24 | 2020-04-24 | Bidirectional staggered fin for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020637188.1U CN212512655U (en) | 2020-04-24 | 2020-04-24 | Bidirectional staggered fin for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212512655U true CN212512655U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020637188.1U Active CN212512655U (en) | 2020-04-24 | 2020-04-24 | Bidirectional staggered fin for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212512655U (en) |
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2020
- 2020-04-24 CN CN202020637188.1U patent/CN212512655U/en active Active
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