High efficiency corrugated fin unit

Abstract

The application relates to a high-efficiency corrugated fin unit and relates to the field of heat exchange devices. The high-efficiency corrugated fin unit comprises a first partition plate, a second partition plate and a plurality of groups of corrugated fins located between the first partition plate and the second partition plate, the plurality of groups of corrugated fins are sequentially adjacent and parallel to each other, and the plurality of groups of corrugated fins form a plurality of groups of fluid channels between the first partition plate and the second partition plate. One side of the corrugated fin has a stepped portion, and the other side has a flat portion. By arranging one side of the corrugated fin with a stepped portion and the other side with a flat portion, the effective heat exchange area is greatly increased without adding fins, the heat exchange efficiency and the energy efficiency ratio are greatly improved by using the same material, the weather resistance and the anti-blocking performance are excellent, the stability and reliability are further strengthened, and the maintenance period is greatly prolonged.

Description

Technical Field

[0001] This application relates to the field of heat exchanger technology, and in particular to a high-efficiency corrugated fin unit. Background Technology

[0002] Fins are basic heat transfer elements, their function being to increase the heat exchange area and improve heat transfer efficiency. Corrugated fins are made by pressing a certain corrugated or herringbone shape onto straight fins, achieving an effect similar to sawtooth plate-fin heat exchangers. This causes the fluid to continuously change its flow direction in the curved flow channel, greatly increasing the air heat exchange area and enhancing fluid turbulence. Due to the formation and separation of vortices, the continuous development of the thermal boundary layer is thinned or disrupted, effectively strengthening its heat transfer characteristics. Separating or disrupting the thermal boundary layer improves its heat transfer performance.

[0003] In related technologies, corrugated fins are usually used as outer fins for heat exchange with air. In applications such as engineering machinery, rail transportation, wind power generation, and waste heat recovery, the environment is relatively harsh. With the further increase in heat dissipation demand, it is necessary to increase the heat exchange area by densifying the fins within the limited installation space to improve the heat dissipation performance of the cooler.

[0004] However, adding more dense fins to existing corrugated fins significantly reduces the fins' weather resistance and anti-clogging capabilities, shortens the cleaning and maintenance cycle, increases the weight of the radiator, and increases costs. Summary of the Invention

[0005] The purpose of this application is to provide a high-efficiency corrugated fin unit to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] On the one hand, this application provides a high-efficiency corrugated fin unit, comprising:

[0008] First partition;

[0009] The second partition; and

[0010] Multiple sets of corrugated fins are located between the first partition and the second partition. The multiple sets of corrugated fins are adjacent to each other and parallel to each other. The multiple sets of corrugated fins form multiple sets of fluid channels between the first partition and the second partition.

[0011] The corrugated fin has a stepped portion on one side and a straight portion on the other side.

[0012] In one possible implementation, the end of the corrugated fin near the first partition is welded to the first partition, and the end of the corrugated fin near the second partition is welded to the second partition.

[0013] In one possible implementation, multiple sets of the corrugated fins are evenly spaced between the first partition and the second partition.

[0014] In one possible implementation, the corrugated fins are made of aluminum or copper.

[0015] In one possible implementation, the corrugated fins are formed by stamping.

[0016] On the other hand, this application also provides a high-efficiency corrugated fin, which is any of the corrugated fins described above.

[0017] The beneficial effects of the technical solution provided in this application include at least the following:

[0018] By using corrugated fins with a stepped section on one side and a straight section on the other, the effective heat exchange area (the area in contact with the medium) is significantly increased without densifying the fins. The heat exchange efficiency and energy efficiency ratio are greatly improved by using the same material. Furthermore, the weather resistance and anti-clogging performance are excellent, the stability and reliability are further enhanced, and the maintenance cycle is greatly extended.

[0019] In other words, without increasing the fin pitch and the amount of material used, the wetting perimeter is increased, thereby increasing the heat exchange area. The effective heat exchange area is increased by 10% to 30%, and the flow cross section is not reduced, with almost no impact on resistance. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This invention provides a schematic diagram of the structure of a high-efficiency corrugated fin unit according to an exemplary embodiment of the present application.

[0022] Figure 2 A side view schematic diagram of an efficient corrugated fin unit provided in an exemplary embodiment of this application is shown;

[0023] Figure 3 A schematic diagram of the structure of a corrugated fin unit in the prior art is shown;

[0024] In the figure: 1. First partition; 2. Second partition; 3. Corrugated fins; 31. Stepped section; 32. Straight section; 4. Fluid channel; 5. Lower partition; 6. Upper partition; 7. Corrugated fins. Detailed Implementation

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0026] Among them, the same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings of the specification of the present application, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to facing or away from a specific component, respectively. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the specification of the present application, the meaning of "plurality" is two or more.

[0027] The present application will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] First, a brief introduction to the structure of the corrugated fin unit in the prior art is given:

[0029] Figure 3 FIG. shows a schematic structural diagram of a corrugated fin unit in the prior art, including a lower separator 5, an upper separator 6, and a plurality of groups of corrugated fins 7 located between the lower separator 5 and the upper separator 6. The plurality of groups of corrugated fins 7 are evenly spaced between the lower separator 5 and the upper separator 6, and a single group of corrugated fins 7 is in a "J" shape.

[0030] The present application makes improvements to the above-mentioned prior art. Without increasing the fin pitch and the material usage, the wetted perimeter is increased, so as to achieve the purpose of increasing the heat transfer area. The effective heat transfer area is increased by 10% to 30%, and the flow cross-section is not reduced, and the resistance is hardly affected.

[0031] Specifically, please refer to Figure 1 and Figure 2 , Figure 1 FIG. shows a schematic structural diagram of an efficient corrugated fin unit provided by an exemplary embodiment of the present application. Figure 2The diagram shows a side view of an efficient corrugated fin unit provided in an exemplary embodiment of this application. The efficient corrugated fin unit includes a first partition 1, a second partition 2, and multiple sets of corrugated fins 3 located between the first partition 1 and the second partition 2. The multiple sets of corrugated fins 3 are sequentially adjacent and parallel to each other, and the multiple sets of corrugated fins 3 form multiple sets of fluid channels 4 between the first partition 1 and the second partition 2. The corrugated fins 3 have a stepped portion 31 on one side and a straight portion 32 on the other side.

[0032] In this embodiment, by having a stepped portion on one side and a straight portion on the other side of the corrugated fins, the effective heat exchange area (the area in contact with the medium) is significantly increased without densifying the fins. The heat exchange efficiency and energy efficiency ratio are greatly improved by using the same material, and the weather resistance and anti-clogging performance are excellent. The stability and reliability are further enhanced, and the maintenance cycle is greatly extended.

[0033] Furthermore, the upper end of the corrugated fin 3 is welded to the first partition plate 1, and the lower end of the corrugated fin 3 is welded to the second partition plate 2.

[0034] Specifically, multiple sets of corrugated fins 3 are evenly spaced between the first partition 1 and the second partition 2.

[0035] Optionally, the corrugated fin 3 is made of aluminum or copper. Preferably, the corrugated fin 3 is made of aluminum. In one example, the corrugated fin 3 is made of 3-series aluminum.

[0036] It is understood that this application also provides a high-efficiency corrugated fin, which is the corrugated fin described in the above embodiments.

[0037] As a supplementary explanation, the corrugated fin 3 is formed in one step using a stamping process.

[0038] In summary, the high-efficiency corrugated fin unit provided in this application, by having a stepped section on one side of the corrugated fins and a straight section on the other side, significantly increases the effective heat exchange area (the area in contact with the medium) without densifying the fins. It also significantly improves heat exchange efficiency and energy efficiency ratio using the same materials, and has excellent weather resistance and anti-clogging performance, further enhancing stability and reliability, and greatly extending the maintenance cycle. In other words, without increasing the fin pitch and the amount of material used, it increases the wetting perimeter, thereby increasing the heat exchange area by 10% to 30%, without reducing the flow cross-section and with almost no impact on resistance.

[0039] In the embodiments disclosed in this application, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this invention according to the specific circumstances.

[0040] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A high-efficiency corrugated fin unit, characterized in that, include: First partition (1); Second partition (2); as well as Multiple sets of corrugated fins (3) are located between the first partition (1) and the second partition (2). The multiple sets of corrugated fins (3) are adjacent to each other and parallel to each other. The multiple sets of corrugated fins (3) form multiple sets of fluid channels (4) between the first partition (1) and the second partition (2). The corrugated fin (3) has a stepped portion (31) on one side and a straight portion (32) on the other side. Both the stepped portion (31) and the straight portion (32) extend in the direction from the first partition (1) to the second partition (2).

2. The high-efficiency corrugated fin unit according to claim 1, characterized in that, The corrugated fin (3) is welded to the first partition (1) at one end near the first partition (1), and the corrugated fin (3) is welded to the second partition (2) at one end near the second partition (2).

3. The high-efficiency corrugated fin unit according to claim 1, characterized in that, Multiple sets of the corrugated fins (3) are evenly spaced between the first partition (1) and the second partition (2).

4. The high-efficiency corrugated fin unit according to claim 1, characterized in that, The corrugated fins (3) are made of aluminum or copper.

5. The high-efficiency corrugated fin unit according to claim 1, characterized in that, The corrugated fins (3) are formed by stamping.

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