radiator main fin

Abstract

This invention relates to a radiator main plate, comprising a main plate body with multiple heat dissipation tube holes evenly distributed along its length for connecting heat dissipation tubes. The two long sides of the main plate body are symmetrically bent towards the water chamber side, forming a first flange and a second flange. Multiple edge teeth are evenly distributed along the length of both the first and second flanges. The center-to-center distance between adjacent edge teeth is equal to the tube pitch, the edge tooth width is equal to the tube pitch * 0.6, and the distance between adjacent edge teeth and the center of the heat dissipation tube holes along the length of the main plate is equal to the tube pitch / 2. This invention solves the problem of poor versatility of existing main plates, enabling radiators of different sizes to quickly use the main plate of this invention, improving product consistency. The guiding structure is optimized around the circumference of the heat dissipation tube holes, increasing the guide angle and the length of its inclined surface, effectively reducing the tube collision rate during core assembly and reducing product scrap rate. The strength of the heat dissipation tube root is enhanced, increasing the service life of the radiator.

Description

Technical Field

[0001] This invention relates to a radiator, specifically to a radiator main plate. Background Technology

[0002] Whether it's a traditional internal combustion engine or a new energy vehicle, the radiator is a key component of the cooling system. Its function is to dissipate excess heat and ensure that various components operate at a suitable temperature, so that the car has both good power and economy as well as good working reliability.

[0003] A radiator is mainly composed of water chambers, main fins, sealing rings, heat dissipation pipes, heat dissipation strips, and protective plates. Among them, the main fins are the key connecting components, and their size directly affects the size of the radiator core, which in turn affects its heat dissipation capacity. The strength of the main fins also directly affects the reliability of the radiator.

[0004] In existing automobiles, different sizes of radiators are required to match different application scenarios. However, the existing main plate structure has poor versatility, and different main plate molds need to be developed for radiators of different sizes, resulting in long development cycles and high development costs. Summary of the Invention

[0005] To address the above issues, this invention provides a heat sink main plate that can be stamped out using the same mold according to the required core size of the heat sink, and the standardized main plate structure can be used on both prototypes and final products.

[0006] The technical solution adopted in this invention is: a radiator main plate, including a main plate body, wherein the main plate body has a plurality of heat dissipation tube holes for connecting heat dissipation tubes evenly distributed along its length direction, characterized in that: the two long sides of the main plate body are symmetrically bent toward the water chamber side to form a first flange and a second flange; a plurality of edge teeth are evenly distributed along the length direction on the first flange and the second flange, the center distance between adjacent edge teeth is equal to the tube pitch, the width of the edge teeth is equal to the tube pitch * 0.6, and the distance between adjacent edge teeth and the center of the heat dissipation tube holes along the length direction of the main plate is equal to the tube pitch / 2.

[0007] Preferably, the tube-strip pitch is 8–12 mm.

[0008] Preferably, the height of the bright band on the short side of the heat dissipation pipe hole is 2-2.5 mm, and the thickness is 0.3 mm.

[0009] Preferably, the height of the bright band on the long side of the heat dissipation pipe hole is 3-4 mm and the thickness is 0.6 mm.

[0010] Preferably, the air side of the heat dissipation pipe hole is provided with a guide structure, and the guide angle of the guide structure is 30° to 40°.

[0011] Preferably, the long side dimension of the guide structure is equal to the long side dimension of the heat dissipation pipe hole plus 1 to 2 mm.

[0012] Preferably, the short side dimension of the guide structure is equal to the short side dimension of the heat dissipation pipe hole plus 1 to 2 mm.

[0013] Preferably, the first flange and the second flange are fastened to the water chamber shell, and the bends of the bite teeth on the first flange and the second flange correspond to the bite teeth on the water chamber shell.

[0014] The beneficial effects of this invention are as follows: This invention solves the problem of poor versatility of existing main heatsinks, enabling heatsinks of different sizes to quickly use the same standard design structure main heatsink, thus improving product consistency; the guide structure is optimized around the entire circumference of the heatsink tube holes, increasing the guide angle and its inclined surface length, effectively reducing the tube collision rate during core assembly and reducing product scrap rate; the strength of the heatsink tube root is enhanced, extending the service life of the heatsink. This invention has the following advantages:

[0015] 1. The structure within each tube pitch is the same, so the same mold can be used to stamp out the corresponding main plate according to the required core size of the heat sink. The standardized main plate structure can be used on the sample and the final product. The two long sides of the main plate adopt a bent edge structure, the spacing of the edge teeth is equal to the spacing of the heat sink holes, and the edge teeth and heat sink holes are staggered.

[0016] 2. Add guiding features around the entire circumference of the heat sink hole in the main plate. The angle of this feature is designed to be 30° to 40° around the entire circumference. The long side dimension of the guiding structure is equal to the long side dimension of the heat sink hole plus 1 to 2 mm, and the short side dimension is equal to the short side dimension of the heat sink hole plus 1 to 2 mm. This effectively reduces the tube collision rate during core assembly, reduces product scrap rate, and increases production speed.

[0017] 3. Extend the height of the bright band around the entire circumference of the heat sink hole to increase the contact area between the heat sink and the main plate after brazing. The long side of the heat sink hole extends 3-5mm with a wall thickness of 0.6mm; the short side extends 2-3mm with a wall thickness of 0.3mm; this increases the contact area between the heat sink and the main plate at this location after brazing, thus improving the strength of the joint. Attached Figure Description

[0018] Figure 1-2 This is a schematic diagram of the structure of the main heat sink plate of the present invention;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 for Figure 3 CC cross-section;

[0021] Figure 5 for Figure 2 BB cross-section;

[0022] In the diagram: 1. Main body; 2. Heat dissipation tube hole; 21. Tube-strip pitch; 3. Edge teeth; 4. Short side of heat dissipation tube hole; 5. Long side of heat dissipation tube hole; 6. Guide structure; 7. Heat dissipation tube. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Existing radiator main plates are often made by cutting and welding them together during prototype manufacturing. This results in numerous burrs at the cut points, which can easily scratch the heat pipes and makes assembly difficult. Furthermore, once the radiator design is finalized, changing the model requires developing new molds for the new main plate, leading to long development cycles and high costs. During radiator assembly, when using a core assembly machine to press the heat pipes, heat slats, main plate, and baffle together, the existing main plate is prone to pipe collisions, requiring high dimensional accuracy. In actual use, the joint between the main plate and the base of the heat pipe lacks strength, making it prone to breakage.

[0025] like Figure 1-2 As shown, the main plate of the radiator of the present invention is an integral stamped part, including a main plate body 1. The main plate body 1 has a plurality of heat dissipation pipe holes 2 evenly distributed along its length for connecting heat dissipation pipes. The two long sides of the main plate body 1 are symmetrically bent toward the water chamber side to form a first flange and a second flange. The main plate body 1 adopts an open structure and does not design a flange structure to ensure versatility.

[0026] Multiple biting teeth 3 are evenly distributed along the length of both the first and second flanges. The center-to-center distance between adjacent biting teeth 3 is equal to the tube-strip pitch 21 (the center-to-center distance between adjacent heat dissipation tube holes is the tube-strip pitch, with a size of 8-12mm). The width of the biting teeth is equal to the tube-strip pitch * 0.6, and the distance between the center of adjacent biting teeth 3 and the center of heat dissipation tube hole 2 along the length of the main plate is equal to the tube-strip pitch / 2.

[0027] During assembly, the main body 1 is first pressed against the water chamber through the flange structure (first flange and second flange) on the two long sides. Then, the bite teeth 3 on the flange structure are bent and pressed into the bite teeth designed in advance in the water chamber to realize the assembly connection between the main body 1 and the water chamber.

[0028] Combination Figure 3 As shown, the main sheet of the present invention associates the centerline spacing of adjacent bite teeth 3 with the centerline spacing of heat dissipation tube holes 2, and the structure is periodically distributed in each tube pitch along the length direction. Therefore, a set of molds can be used to process main sheets with different numbers of holes, which has versatility.

[0029] Combination Figure 3-5 As shown, the main sheet of this invention extends the height H2 of the bright band at the short side of the heat dissipation tube hole (increasing to 2-2.5 mm) and the thickness to 0.3 mm; and extends the height H1 of the bright band at the long side of the heat dissipation tube hole (increasing to 3-4 mm) and the thickness to 0.6 mm. This increases the contact area between the heat dissipation tube and the main sheet at this location after brazing, and improves the strength of the joint.

[0030] Combination Figure 4 As shown, the main body of this invention adds a guide structure 6 to the entire circumference of the air side of the heat dissipation tube hole (the guide angle α is 30° to 40°, and the long side dimension L1 of the guide structure = the long side dimension of the heat dissipation tube hole + 1 to 2 mm, and the short side dimension L2 of the guide structure = the short side dimension of the heat dissipation tube hole + 1 to 2 mm). This structure can effectively reduce the tube collision rate during core assembly, reduce the product scrap rate, and increase production speed.

[0031] The foregoing has shown and described the basic principles and main structural features of the present invention. The present invention is not limited to the above examples; various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat sink main plate, comprising a main plate body, wherein the main plate body has a plurality of heat sink holes evenly distributed along its length for connecting heat sink pipes, characterized in that: The two long sides of the main plate are symmetrically bent toward the water chamber to form a first flange and a second flange. Multiple biting teeth are evenly distributed along the length direction of the first flange and the second flange. The center distance between adjacent biting teeth is equal to the tube pitch. The width of the biting teeth is equal to the tube pitch × 0.

6. The distance between the center of the biting teeth and the center of the adjacent heat dissipation tube hole along the length direction of the main plate is equal to the tube pitch / 2.

2. The radiator main plate according to claim 1, characterized in that: The tube-strip pitch is 8~12mm.

3. The radiator main plate according to claim 1, characterized in that: The height of the bright band on the short side of the heat dissipation pipe hole is 2~2.5mm, and the thickness is 0.3mm.

4. The radiator main plate according to claim 1, characterized in that: The height of the bright band on the long side of the heat dissipation pipe hole is 3~4mm, and the thickness is 0.6mm.

5. The radiator main plate according to claim 1, characterized in that: The air side of the heat dissipation pipe hole is provided with a guide structure, and the guide angle of the guide structure is 30°~40°.

6. The radiator main plate according to claim 5, characterized in that: The length of the long side of the guide structure = the length of the long side of the heat dissipation pipe hole + 1~2mm.

7. The radiator main plate according to claim 5, characterized in that: The short side length of the guide structure = the short side length of the heat dissipation pipe hole + 1~2mm.

8. The radiator main plate according to claim 1, characterized in that: The first flange and the second flange are fastened to the water chamber shell, and the bends of the bite teeth on the first flange and the second flange correspond to the bite teeth on the water chamber shell.

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