Inclined bulge fin and radiator using same

Abstract

The utility model relates to an inclined bulge fin and a radiator using the same, the inclined bulge fin comprises a fin main body which is integrally formed by bending a metal plate, and the bending shape is a wave shape; the fin main body comprises a plurality of bending parts with wave crests and wave troughs, a supporting part is arranged between every two adjacent bending parts, and heat dissipation channels are formed between the adjacent supporting parts and the corresponding bending parts; a plurality of bumps are formed on the surface of the supporting part in the length direction of the supporting part, and the bumps are arranged in parallel and in an inclined mode. Through the matching design of the wave-shaped bending structures and the inclined bulges and the size design of the supporting parts and the bulges, the layout of the formed heat dissipation channels is optimized, the effect that airflow effectively passes through the heat dissipation channels is guaranteed, meanwhile, the turbulent flow effect on the airflow is greatly improved, and the heat dissipation efficiency is improved. The contact time and the contact area of the gas and the inner wall of the fin body are increased, and then the heat exchange time and the heat exchange area of a medium in a radiating pipe of the radiator and airflow are increased.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, specifically to a slanted bulging fin and a radiator using the same. Background Technology

[0002] Agricultural tractors are now being developed with higher horsepower, but according to manufacturing standards, the engine cover cannot be made too large or too high. This requires a small radiator to achieve the cooling capacity of a high-horsepower engine. Unlike passenger cars and commercial vehicles, agricultural machinery, such as tractors, often operates in dusty environments with uneven ground, placing high demands on the performance of the radiator. The original radiator has a straight bulge fin structure. Due to the mold for forming the fins, the bulge cannot be too long, and the airflow between the fins needs to be strong. Therefore, the bulge cannot be too high either. This limits the shape and height of the bulge, resulting in a small air contact area, which in turn affects the ventilation effect of the cooling fins. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides a slanted bulging fin and a heat sink using the same.

[0004] The technical solution of this utility model is as follows:

[0005] A type of oblique bulging fin includes a fin body, which is integrally formed by bending a metal sheet, and the bending shape is wavy.

[0006] The fin body includes several bends with peaks and troughs, and a support is provided between two adjacent bends, and a heat dissipation channel is formed between the adjacent support and the corresponding bend.

[0007] The support portion has several bulges formed along its length, and the bulges are arranged in parallel and at an angle.

[0008] To increase the contact area between the airflow and the bulge when passing through the heat dissipation channel, the acute angle formed between the extension line of the bulge and the length direction of the support is 25°-45°.

[0009] To ensure airflow and to allow for irregular airflow, several bulges are spaced apart, with a spacing of 1.2cm-1.5cm.

[0010] To improve the smoothness of airflow, the bulge is designed as an arc shape with a central protrusion that gradually decreases towards both sides.

[0011] To enhance the turbulence effect and increase the contact area with the airflow, the bulges on adjacent supports are tilted in opposite directions.

[0012] To increase the number of heat dissipation channels and ensure the heat dissipation area of ​​a single channel, the distance between the midlines of adjacent peaks and troughs is 4.5cm-6cm.

[0013] To improve the turbulence effect while ensuring airflow, the maximum distance between the protruding part of the bulge and the support is 0.5cm-1cm.

[0014] To ensure the heat dissipation dimensions of the heat dissipation channel, the height of the support is 7.5cm-8.5cm, and the length of the bulge is greater than the height of the support.

[0015] A radiator is provided with the aforementioned oblique bulging fins. The radiator includes two transverse side plates and two longitudinal side plates forming a rectangular shape. Several heat dissipation pipes are arranged at intervals between the two transverse side plates. The fin body is installed between two adjacent heat dissipation pipes, and the support part abuts against the heat dissipation pipes.

[0016] To facilitate the installation of the heat dissipation pipe and to ensure that the medium inside the heat dissipates heat from the gas passing through the heat dissipation channel, the heat dissipation pipe penetrates and is fixed to the longitudinal side plate, and the heat dissipation pipe is extruded to form multiple medium channels, which are arranged perpendicular to the extension direction of the heat dissipation channel and the medium channel.

[0017] The beneficial effects of this utility model are as follows: This utility model is a slanted bulging fin and a radiator using it. Unlike existing fins, it increases the length of the bulge through the combination of a wave-shaped bending structure and slanted bulging protrusions. This significantly increases the airflow contact area and enhances the turbulence effect within a limited space. At the same time, the design of the dimensions of the support and the bulging protrusions optimizes the layout of the heat dissipation channel, ensuring that the airflow passes effectively through the heat dissipation channel while greatly improving the turbulence effect on the airflow. This increases the contact time and contact area between the gas and the inner wall of the fin body, thereby increasing the heat exchange time and heat exchange area between the medium and the airflow in the heat dissipation pipe of the radiator. This effectively solves the problem of low heat dissipation efficiency of traditional straight bulging fins and has the characteristics of excellent heat dissipation performance and adaptability to the harsh working environment of agricultural tractors. Attached Figure Description

[0018] The advantages and features of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the folding of the fin body;

[0021] Figure 2 This is a structural diagram of the folded part of the fin body;

[0022] Figure 3 This is a diagram of the unfolded part of the fin body;

[0023] Figure 4 A schematic diagram showing the installation of the finned body and the heat sink;

[0024] Figure 5 Side view of the fin body installation;

[0025] The components represented by the various reference numerals in the diagram are:

[0026] 1. Fin body; 2. Bending part; 3. Support part; 4. Heat dissipation channel; 5. Bulging protrusion; 6. Horizontal side plate; 7. Longitudinal side plate; 8. Heat dissipation pipe; 9. Medium channel. Detailed Implementation

[0027] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0028] Example

[0029] As mentioned in the background section, existing agricultural machinery radiators require high heat dissipation performance. Radiators typically use heat dissipation fins for gas heat exchange. Raised bumps on the heat dissipation fins are used to turbulent the airflow, increasing the contact area and contact time between the airflow and the radiator fins to ensure heat dissipation. However, due to manufacturing process limitations and the size of the heat dissipation fins themselves, the length and height of existing bumps are relatively small, reducing the turbulence effect and affecting the heat dissipation performance of agricultural machinery radiators. Therefore, the inventors have improved upon existing heat dissipation fins by designing a new type of slanted bump fin, which has been applied to radiators. The following is a detailed explanation with reference to the illustrations.

[0030] This embodiment provides a slanted bulging fin and a heat sink using it, see [link to previous document]. Figure 1 This application proposes a fin body 1, integrally formed by bending a metal sheet, with the bending shape being wavy. The wavy bending refers to the formation of a periodic undulating structure through continuous alternating bending, which can be achieved using a continuous molding process. The fin includes several bends 2 with peaks and troughs. Unlike actual wavy shapes, the bends 2 in this design are horizontal rather than arc-shaped, to facilitate installation with the heat sink. A support 3 is provided between two adjacent bends 2, and a heat dissipation channel 4 is formed between adjacent support 3 and the corresponding bend 2. The heat dissipation channel 4 refers to the airflow passage enclosed by the adjacent support 3 and the bends 2.

[0031] In this scheme, combined with Figure 2The distance between the centerlines of adjacent peaks and troughs is 4.5cm-6cm. The peak centerline refers to the centerline formed by extending the highest point of the raised portion along the bending direction in the wavy bending structure of the fin, and the trough centerline refers to the centerline formed by extending the lowest point of the recessed portion along the bending direction. Setting the distance between adjacent centerlines to 4.5cm-6cm balances the conflict between the number of heat dissipation channels and the heat dissipation area of ​​a single channel. This avoids situations where too small a spacing results in too many channels but increased airflow resistance per channel, or too large a spacing results in too few channels and redundant heat dissipation area per channel. Compared to existing technologies, traditional fins do not optimize the peak-trough spacing design, typically using fixed spacing or random distribution, leading to insufficient number of heat dissipation channels or mismatched heat dissipation areas per channel. This solution, by limiting the centerline spacing range, creates a synergistic relationship between the number of channels and the area per channel, solving the problem that small-sized fins cannot simultaneously meet the heat dissipation requirements of high-horsepower engines.

[0032] In addition, the height of the support part 3 is controlled within the range of 7.5cm to 8.5cm. Specifically, it can be selected by the distance between the heat pipes 8 of the heat sink. The support part 3 refers to the connection structure between the bends 2 of adjacent peaks and troughs. Specifically, it can be achieved by bending metal plates into one piece. Its length range is selected to ensure the longitudinal extension space of the heat dissipation channel 4 and avoid insufficient heat dissipation area due to the support part 3 being too short.

[0033] In this embodiment, unlike the prior art, the surface of the support part 3 is formed with a plurality of bulges 5 along its length. The bulges 5 refer to the local raised structures on the surface of the support part 3, which can be formed by stamping process. The plurality of bulges 5 are arranged in parallel and at an angle. The angled arrangement can change the direction of airflow and prolong the contact time with the airflow and increase the contact area. Compared with the prior art, the straight bulge structure is limited by the stamping process, resulting in a limited bulge height. This solution uses an angled arrangement to allow bulges of the same height to obtain a larger effective projected area.

[0034] In this scheme, combined with Figure 3An appropriate spacing, such as 1.2cm to 1.5cm, is maintained between adjacent bulges 5. This allows the airflow to maintain a basic velocity through the gaps while simultaneously creating vortices in the bulge gaps as it flows through the heat dissipation channel 4. When the airflow flows longitudinally along the heat dissipation channel 4, the inclined bulges 5 guide the airflow to generate a lateral component, while the spaced-out bulge structure causes the airflow to change direction between adjacent bulges. This spaced layout avoids excessive obstruction of the airflow by continuous bulges and creates secondary flow through the gaps, enhancing the contact between the airflow and the fin surface. Furthermore, the bulges 5 are designed as arc-shaped surfaces with a central bulge that gradually decreases towards both sides. This arc-shaped surface means that the highest point of the bulge 5 is located at its central axis, and the height gradually decreases along the two side edges to form a continuous curved surface. Specifically, this can be achieved by using a die-stamping process to form a continuous arc-shaped bulge structure on the surface of the support part 3. This arc-shaped structure can form a smooth transition contact surface when the airflow passes through, reducing airflow separation.

[0035] Based on the above structure, the bulges 5 on adjacent support parts 3 have opposite inclination directions. The opposite inclination directions of the bulges 5 mean that on the surfaces of two adjacent support parts 3, when each bulge 5 extends along the length direction of the support part 3, the angle formed between its extension axis and the length direction of the support part 3 is mirror-symmetrical. The bulges 5 formed on the surface of the support part 3 are inclined to the upper left and upper right on adjacent support parts 3, respectively. When the airflow passes through the heat dissipation channel 4, the alternating change of the inclination direction of the bulges 5 causes the airflow to form an interlaced flow path in the adjacent channel, which can prolong the contact time between the airflow and the bulges 5.

[0036] In this embodiment, the acute angle formed between the extension line of the bulge 5 and the length direction of the support 3 is 25°-45°, which is the angle at which the end of the bulge 5 away from the support 3 deviates from the support 3 in the opposite direction of inclination. In this solution, a 30° angle is used to ensure the contact area between the airflow and the bulge 5 and to avoid a large airflow diversion in the direction of inclination of the bulge 5, thereby avoiding the airflow taking too long to pass through the heat dissipation channel 4.

[0037] Based on the above structure, the maximum distance between the protruding position of the bulge 5 and the support part 3 is 0.5cm-1cm. This size range ensures smooth airflow through the heat dissipation channel 4. By adjusting the depth of the bulge, a moderate airflow disturbance is formed, avoiding excessive airflow resistance due to excessive bulge height. Furthermore, the length of the bulge 5 is greater than the height of the support part 3. This greater height than the length of the support part 3 increases the contact path between the airflow and the bulge within the heat dissipation channel 4, thereby improving heat exchange efficiency.

[0038] Secondly, this solution also provides a heat sink with this fin structure installed, combined with Figure 4The radiator includes two transverse side plates 6 and two longitudinal side plates 7, forming a rectangular shape. Several spaced heat dissipation pipes 8 are arranged between the two transverse side plates 6. Each heat dissipation pipe 8 is a tubular heat-conducting component extending along the transverse side plates 6. Furthermore, the heat dissipation pipes 8 penetrate the longitudinal side plates 7 and are fixed thereto. The fixing method is a common technique in this solution and existing solutions are sufficient. The fin body 1 is installed between two adjacent heat dissipation pipes 8, and the support part 3 abuts against the heat dissipation pipes 8. Figure 5 The heat dissipation pipe 8 has multiple medium channels 9 formed by extrusion molding. The extrusion position is a closed structure. Compared with the existing technology of multiple small-sized pipes installed at intervals, it can effectively reduce the air thermal resistance in the middle part after multiple pipes are assembled. The assembly difficulty of heat dissipation pipe 8 is greatly reduced. In addition, the heat dissipation channel 4 is arranged perpendicular to the extension direction of the medium channel 9. During heat exchange, the heat dissipation medium is introduced into the medium channel 9 to exchange heat with the airflow passing through the heat dissipation channel 4.

Claims

1. A type of obliquely bulging fin, characterized in that, It includes the fin body (1), which is integrally formed by bending a metal sheet, and the bending shape is wavy. The fin body (1) includes several bends (2) with peaks and troughs, and a support (3) is provided between two adjacent bends (2), and a heat dissipation channel (4) is formed between the adjacent support (3) and the corresponding bend (2). The support part (3) has a plurality of bulges (5) formed along its length, and the plurality of bulges (5) are arranged in parallel and at an angle.

2. The oblique bulging fin according to claim 1, characterized in that, The acute angle formed between the extension line of the bulge protrusion (5) and the length direction of the support (3) is 25°-45°.

3. The oblique bulging fin according to claim 1, characterized in that, Several bulges (5) are spaced apart, with a spacing of 1.2cm-1.5cm.

4. The oblique bulging fin according to claim 1, characterized in that, The bulge (5) is configured as an arc shape with a central protrusion and gradually decreasing towards both sides.

5. The oblique bulge fin according to claim 1, characterized in that, The bulges (5) on adjacent support parts (3) have opposite inclination directions.

6. The oblique bulge fin according to claim 1, characterized in that, The distance between the midlines of adjacent crests and troughs is 4.5cm-6cm.

7. The oblique bulge fin according to claim 4, characterized in that, The maximum protrusion of the bulge (5) is 0.5cm-1cm away from the support (3).

8. The oblique bulging fin according to claim 1, characterized in that, The height of the support part (3) is 7.5cm-8.5cm, and the length of the bulge (5) is greater than the height of the support part (3).

9. A radiator, equipped with obliquely bulging fins as described in any one of claims 1-8, characterized in that, The radiator includes two horizontal side plates (6) and two vertical side plates (7) forming a rectangle. Several heat dissipation pipes (8) are arranged at intervals between the two horizontal side plates (6). The fin body (1) is installed between two adjacent heat dissipation pipes (8), and the support part (3) abuts against the heat dissipation pipes (8).

10. A radiator according to claim 9, characterized in that, The heat dissipation pipe (8) penetrates the longitudinal side plate (7) and is fixed thereto. The heat dissipation pipe (8) has multiple medium channels (9) formed by extrusion molding. The heat dissipation channels (4) are arranged perpendicular to the extension direction of the medium channels (9).

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