High-strength corrugated heat exchange fin and heat exchanger

Abstract

This invention relates to the field of heat exchanger technology and provides a high-strength corrugated heat exchange fin, comprising a corrugated structure and perforations formed in the corrugated structure. The corrugated structure includes two horizontally arranged structural sections and several wave crests arranged facing each other between the structural sections. A transition section connects adjacent wave crests. A reinforcing portion is provided on the raised surface of each wave crest, and the circumferential angle of the reinforcing portion is larger than the circumferential angle of the wave crest. A heat dissipation bridge is provided on the concave surface of each wave crest. This device solves the problem that the bending and compressive strength of the fins at the corrugation transition points is insufficient to resist the effects of turbulence, resulting in a high probability of damage at the corrugation transition points after long-term use, thus affecting the service life of the heat exchanger. It achieves the effect of enhancing the strength of the corrugated fins at the wave crests while avoiding the increase in thermal resistance caused by the increase in fin thickness. This invention also provides a heat exchanger including the above-mentioned high-strength corrugated heat exchange fin.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and more specifically, to a high-strength corrugated heat exchange fin and a heat exchanger. Background Technology

[0002] A finned heat exchanger is a highly efficient heat exchange device that increases the heat exchange area by adding fins to the outer surface of the heat exchange tubes. The fins are the core component of a finned heat exchanger, primarily functioning to increase the heat exchange area and enhance fluid turbulence, thereby improving heat transfer efficiency. The corrugated structure of corrugated heat exchange fins increases fluid flow disturbance on the fin surface, further improving heat transfer efficiency.

[0003] Patent CN215177189U discloses a corrugated fin and radiator. By setting corrugated fins with unequal wave heights, it effectively reduces airflow resistance while ensuring heat exchange. However, in turbulent fluid environments, the bending and compressive strength of the fins at the corrugation transitions is insufficient to resist the effects of turbulence. After long-term use, the probability of damage at the corrugation transitions is high, affecting the service life of the heat exchanger.

[0004] Increasing the thickness of the heat exchange fins can increase their strength to some extent, but it also increases their thermal resistance, which in turn reduces their heat exchange efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a high-strength corrugated heat exchange fin and heat exchanger that enhances the strength at the crest of the corrugated fin while avoiding increased thermal resistance due to increased fin thickness.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-strength corrugated heat exchange fin includes a corrugated structure and a tube hole formed on the corrugated structure. The corrugated structure includes two horizontally arranged structural sections and several wave crest sections arranged opposite to each other between the structural sections. A transition section is provided between two adjacent wave crest sections. A reinforcing part is provided on the raised surface of the wave crest section. The circumferential angle of the reinforcing part is larger than the circumferential angle of the wave crest section. A heat dissipation bridge is provided on the concave surface of the wave crest section.

[0008] The present invention is further configured such that the structural segment, the crest segment, the transition segment and the reinforcing part are integrally formed, and the plurality of crest segments are equidistantly arranged.

[0009] The present invention is further configured such that the reinforcing arc surface on the reinforcing part and the convex surface on the crest section have a streamlined transition.

[0010] By adopting the above technical solution, the streamlined transition between the arc surface and the convex surface can be strengthened, which can effectively reduce the flow resistance at the connection between the strengthening part and the crest section, and further reduce the force of the turbulent environment on the crest section.

[0011] The present invention is further configured such that: at each crest segment, multiple heat dissipation bridges are equidistantly arranged along the width direction of the corrugated heat exchange fins, and each heat dissipation bridge includes an arc-shaped piece and connecting pieces disposed at both ends of the arc-shaped piece, with the two connecting pieces respectively connected to the crest segment.

[0012] The present invention is further configured such that the shape of the arc-shaped sheet is adapted to the shape of the concave surface on the crest section.

[0013] The present invention is further configured such that: the pipe hole includes a first pipe hole and a second pipe hole respectively disposed in two adjacent transition sections, and the first pipe hole and the second pipe hole are respectively disposed on both sides of the transition section.

[0014] The present invention is further configured such that: the first pipe hole and the second pipe hole are arranged at equal intervals along the width direction of the corrugated heat exchange fins.

[0015] A heat exchanger includes the high-strength corrugated heat exchange fins described above, and also includes a tube sheet and heat exchange tubes disposed between the tube sheets. The heat exchange tubes are arranged through multiple corrugated heat exchange fins, and one end of the heat exchange tube is provided with an inlet pipe and the other end is provided with an outlet pipe.

[0016] The beneficial effects of this utility model are:

[0017] A reinforcing section is provided on the raised surface of the crest section. The arc angle of the reinforcing section is larger than that of the arc angle of the crest section. This can increase the thickness at the turning point of the crest section, thereby improving the bending and compressive strength of the turning point of the crest section under the action of turbulent environment. It can also prevent the thermal resistance of the corrugated heat exchange fins from increasing due to excessive thickness in other parts of the corrugated structure, which would lead to a decrease in heat exchange efficiency. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the heat exchanger of this utility model.

[0020] Figure 2 for Figure 1 The front view shown.

[0021] Figure 3 for Figure 1 The diagram shows the structure of the corrugated heat exchange fins.

[0022] Figure 4 for Figure 3 The front view of the corrugated heat exchange fins shown.

[0023] Figure 5 for Figure 3 The left view of the corrugated heat exchange fins shown.

[0024] Figure 6 for Figure 5 A magnified view of a portion of region A shown.

[0025] Explanation of reference numerals in the attached diagram: 10. Corrugated heat exchange fins;

[0026] 1. Pipe hole; 11. First pipe hole; 12. Second pipe hole;

[0027] 2. Corrugated structure; 21. Structural section; 22. Crest section; 221. Raised surface; 222. Concave surface; 23. Transition section; 24. Reinforcing section; 241. Reinforcing curved surface;

[0028] 3. Heat sink fins; 31. Connecting fins; 32. Arc-shaped fins; 33. Airflow guide fins;

[0029] 100. Heat exchanger;

[0030] 20. Tube sheet; 30. Heat exchange tube; 301. Inlet tube; 302. Outlet tube. Detailed Implementation

[0031] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] Please refer to Figure 1-2 A heat exchanger 100 includes high-strength corrugated heat exchange fins 10, a tube sheet 20, and heat exchange tubes 30 disposed between the tube sheet 20. The tube sheet 20 is used to fix the heat exchange tubes 30 and also to seal the heat exchanger 100. The heat exchange tubes 30 are arranged through multiple corrugated heat exchange fins 10, with an inlet pipe 301 at one end and an outlet pipe 302 at the other end. During heat exchange, the fluid requiring heat exchange enters through the inlet pipe 301 and circulates within the heat exchange tubes 30. During circulation, heat exchange is completed by heat transfer through the corrugated heat exchange fins 10 and the fluid within the heat exchanger 100. After heat exchange, the fluid is discharged through the outlet pipe 302.

[0033] Please refer to Figure 3-6A high-strength corrugated heat exchange fin is disclosed. The corrugated heat exchange fin 10 includes a corrugated structure 2 and pipe holes 1 formed on the corrugated structure 2. The corrugated structure 2 includes two horizontally arranged structural sections 21 and several wave crest sections 22 arranged facing each other between the structural sections 21. A transition section 23 is provided between adjacent wave crest sections 22. The multiple wave crest sections 22 are equidistantly arranged, and every two adjacent wave crest sections 22 are arranged facing each other about the axis of the structural section 21. The transition section 23 is symmetrically arranged about the axis between two adjacent wave crest sections 22, thereby forming an arc-shaped streamline transition between adjacent wave crest sections 22. The cross-section of the wave crest section 22 is arc-shaped, with the convex side of the cross-section of the wave crest section 22 being a convex surface 221 and the concave side of the cross-section of the wave crest section 22 being a concave surface 222.

[0034] Please refer to Figure 3-6 When fluid flows between the corrugated heat exchange fins 10, the turbulent environment exerts different forces on different locations of the corrugated heat exchange fins 10, with the most significant turbulent effect occurring at the turning point on the raised surface 221 of the corrugated crest section 22. When the corrugated heat exchange fins 10 are in a turbulent fluid environment for a long time, the turning point on the raised surface 221 of the corrugated crest section 22 is most prone to deformation and damage due to insufficient bending and compressive strength. A reinforcing part 24 is provided on the raised surface 221 of the corrugated crest section 22, and the structural section 21, the corrugated crest section 22, the transition section 23, and the reinforcing part 24 are integrally formed. The reinforcing section 24 is symmetrically arranged about the axis of the crest section 22. The cross-section of the reinforcing section 24 is arc-shaped, and the circumferential angle of the arc of the reinforcing section 24 is larger than that of the arc of the crest section 22, thereby increasing the thickness at the position of the crest section 22. The reinforcing section 24 can not only increase the thickness at the turning point of the crest section 22, thereby improving the bending strength and compressive strength of the turning point of the crest section 22 under the action of turbulent environment, but also avoid the increase in thermal resistance of the corrugated heat exchange fins 10 due to excessive thickness in other parts of the corrugated structure 2, which would lead to a decrease in heat exchange efficiency. The reinforcing arc surface 241 on the reinforcing section 24 and the convex surface 221 on the crest section 22 have a streamlined transition. The streamlined transition between the reinforcing arc surface 241 and the convex surface 221 can effectively reduce the flow resistance at the connection between the reinforcing section 24 and the crest section 22, and further reduce the force of the turbulent environment acting on the crest section 22.

[0035] Please refer to Figure 3-6 The pipe hole 1 includes a first pipe hole 11 and a second pipe hole 12 respectively disposed on two adjacent transition sections 23, with the first pipe hole 11 and the second pipe hole 12 respectively disposed on both sides of the transition section 23. Multiple first pipe holes 11 and second pipe holes 12 are equidistantly disposed along the width direction of the corrugated heat exchange fins 10. The first pipe hole 11 and the second pipe hole 12 are fixedly connected to the transition section 23. The first pipe hole 11 and the second pipe hole 12 respectively disposed on both sides of the transition section 23 can resist the turbulent forces acting on the corrugated structure 2 from different directions under the turbulent flow environment generated by the fluid.

[0036] Please refer to Figure 3-6 When fluid flows between the corrugated heat exchange fins 10, the turbulent environment creates different turbulent velocities and contact times at different locations on the corrugated heat exchange fins 10, resulting in different heat transfer rates at different locations. The heat transfer is minimal when the fluid flows through the concave surface 222 of the corrugated crest section 22. Heat dissipation bridges 3 are provided on the concave surface 222 of the corrugated crest section 22, with multiple heat dissipation bridges 3 evenly spaced along the width direction of the corrugated heat exchange fins 10 at each crest section 22. Each heat dissipation bridge 3 includes an arc-shaped piece 32 and connecting pieces 31 at both ends of the arc-shaped piece 32, with each connecting piece 31 connected to the crest section 22. The shape of the arc-shaped piece 32 matches the shape of the concave surface 222 on the crest section 22, ensuring that the turbulent flow direction generated when the fluid flows through the heat dissipation bridge 3 is consistent with the turbulent flow direction generated when the fluid flows through the concave surface 222 on the crest section 22. One end of the arc-shaped plate 32 is provided with a guide plate 33, which is arc-shaped and positioned away from the concave surface 222. When the fluid flows between the two corrugated heat exchange fins 10, the guide plate 33 can split the turbulence and guide the split turbulence to the arc-shaped plate 32. A channel for fluid flow can be formed between the arc-shaped plate 32 and the connecting plate 31. The split turbulence further contacts the concave surface 222 of the crest section 22 within the channel, thereby increasing the heat exchange between the turbulence and the concave surface 222 and enhancing the heat exchange efficiency of the heat exchange fins 10.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-strength corrugated heat exchange fin, characterized in that: The corrugated structure (2) includes a corrugated structure (2) and a tube hole (1) formed on the corrugated structure (2). The corrugated structure (2) includes two horizontally arranged structural sections (21) and several wave crest sections (22) arranged opposite to each other between the structural sections (21). A transition section (23) is provided between two adjacent wave crest sections (22). A reinforcing part (24) is provided on the raised surface (221) of the wave crest section (22). The circumferential angle of the reinforcing part (24) is larger than the circumferential angle of the wave crest section (22). A heat dissipation bridge (3) is provided on the concave surface (222) of the wave crest section (22).

2. The high-strength corrugated heat exchange fin according to claim 1, characterized in that: The structural section (21), the crest section (22), the transition section (23) and the reinforcing part (24) are integrally formed, and the multiple crest sections (22) are equidistantly arranged.

3. The high-strength corrugated heat exchange fin according to claim 2, characterized in that: The reinforcing arc surface (241) on the reinforcing part (24) and the raised surface (221) on the crest section (22) have a streamlined transition.

4. The high-strength corrugated heat exchange fin according to claim 1, characterized in that: At each crest segment (22), multiple heat dissipation bridges (3) are equidistantly arranged along the width direction of the corrugated heat exchange fins (10). Each heat dissipation bridge (3) includes an arc-shaped piece (32) and connecting pieces (31) arranged at both ends of the arc-shaped piece (32). The two connecting pieces (31) are respectively connected to the crest segment (22).

5. A high-strength corrugated heat exchange fin according to claim 4, characterized in that: The shape of the arc-shaped piece (32) is adapted to the shape of the concave surface (222) on the crest section (22).

6. The high-strength corrugated heat exchange fin according to claim 1, characterized in that: The pipe hole (1) includes a first pipe hole (11) and a second pipe hole (12) respectively disposed in two adjacent transition sections (23), with the first pipe hole (11) and the second pipe hole (12) respectively disposed on both sides of the transition section (23).

7. A high-strength corrugated heat exchange fin according to claim 6, characterized in that: Multiple first tube holes (11) and second tube holes (12) are equidistantly arranged along the width direction of the corrugated heat exchange fins (10).

8. A heat exchanger comprising the high-strength corrugated heat exchange fins as described in any one of claims 1-7, characterized in that: It also includes a tube sheet (20) and heat exchange tubes (30) disposed between the tube sheet (20). The heat exchange tubes (30) are disposed through multiple corrugated heat exchange fins (10). One end of the heat exchange tubes (30) is provided with an inlet pipe (301) and the other end is provided with an outlet pipe (302).

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