Two-layer fractal structure combined cooling fin with sub-stage vapor chamber

Abstract

The utility model relates to a two-layer fractal structure combined radiating fin with a sublevel vapor chamber, which is characterized by comprising a bottom vapor chamber and a plurality of radiating units arranged on the bottom vapor chamber. Each heat dissipation unit comprises a sub-stage vapor chamber and at least two layers of heat dissipation teeth with geometric similarity, a main air channel is formed between every two adjacent heat dissipation units, a sub air channel is formed between every two layers of heat dissipation teeth on the heat dissipation units, and the main air channels and the sub air channels are also in geometric similarity. According to the radiating fin, heat is uniformly dispersed to the two-layer fractal structure radiating teeth through the bottom vapor chamber and the sub-stage vapor chamber, and the design of the main air channel and the sub air channel is combined, so that the heat distribution is more uniform, the air convection heat exchange is enhanced, the radiating area is increased, and the heat transfer path is prolonged; the radiating fin provided by the utility model can obviously improve the radiating efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation technical field, concretely relates to a two-layer fractal structure combined heat sink with sub-level heat plate, and is especially suitable for computer, LED lighting and other equipment needing high -efficient heat dissipation, and can also be applied to electronic equipment, industrial equipment and other fields. BACKGROUND

[0002] With the development of electronic equipment to the direction of high integration and miniaturization, the heat flux density in unit volume is rising, and the heat dissipation problem becomes one of the key factors restricting the performance and reliability of equipment. The traditional heat sink usually adopts a linear or curved heat sink design, which is easy to cause uneven heat dispersion, serious local heat accumulation, and also affects the heat exchange efficiency due to air flow resistance. The traditional heat sink must be manufactured separately on different equipment, and the deployment efficiency is low. The traditional heat sink is not fully designed and utilized, resulting in limited heat dissipation area and short heat transfer path. The problem is easy to cause local temperature of equipment to be too high, poor heat dissipation performance, and low deployment efficiency, thereby affecting the stability of the equipment, and it is difficult to meet the increasingly stringent heat dissipation demand.

[0003] In actual production and application, in order to improve the above problems, I have made a series of improvements. SUMMARY

[0004] The utility model provides a two-layer fractal structure combined heat sink with sub-level heat plate, characterized by comprising: the bottom heat plate (1) connected with the heat source, and a plurality of two-layer fractal structure heat dissipation units (2a, 2b, 2c, 2d, 2e) arranged on the top of the bottom heat plate (1).

[0005] Each heat dissipation unit (2a, 2b, 2c, 2d, 2e) is provided with a sub-level heat plate at the bottom, which is used to uniformly disperse heat to the heat dissipation teeth. At least two layers of heat dissipation teeth with geometric similarity are arranged on each heat dissipation unit, wherein part of the heat dissipation units (2a, 2b, 2d, 2e) are provided with three first-layer heat dissipation teeth extending from the sub-level heat plate, and six second-layer heat dissipation teeth are uniformly distributed on each first-layer heat dissipation tooth along the length direction; another part of the heat dissipation units (2c) are provided with five first-layer heat dissipation teeth extending from the sub-level heat plate, and eleven second-layer heat dissipation teeth are uniformly distributed on the first-layer heat dissipation teeth along the length direction. The first-layer heat dissipation teeth and the second-layer heat dissipation teeth present geometric similarity.

[0006] The heat dissipation units (2a, 2b, 2c, 2d, 2e) can be combined and arranged on the bottom heat plate (1) as needed, and the number is not less than two, so as to adapt to the heat dissipation demand of equipment of various sizes.

[0007] The connection between adjacent heat dissipation units (2a, 2b, 2c, 2d, 2e) forms a main air duct (as shown in Figure 1 The connection between adjacent heat dissipation units (2a, 2b, 2c, 2d, 2e) forms a main air duct (as shown in Figure 1 The connection between adjacent heat dissipation units (2a, 2b, 2c, 2d, 2e) forms a main air duct (as shown in

[0008] The heat dissipation fins are characterized in that the bottom heat plate (1) and all heat dissipation units are made of aluminum, copper or other high thermal conductivity materials.

[0009] The beneficial effects of the present utility model

[0010] The heat flow is more evenly dispersed: the design of the bottom heat plate (1) and the sub-level heat plate evenly disperses heat to the entire heat dissipation fin, effectively avoiding local heat accumulation and improving overall heat dissipation efficiency.

[0011] Flexible structure, easy to install: the modular two-layer fractal structure heat dissipation fin can be assembled according to different sizes and shapes of heat sources, realizing flexible and efficient heat dissipation solutions.

[0012] The effective heat dissipation area is larger: the multi-level heat dissipation fin design of the fractal structure significantly increases the effective area of the heat dissipation fin in contact with air, heat exchange is more complete, and heat dissipation efficiency is higher.

[0013] The heat transfer path is longer: the two-layer fractal structure heat dissipation fin makes the heat transfer path longer, and the heat can be transferred to the surface of the heat dissipation fin more quickly, improving the heat dissipation efficiency.

[0014] The convection heat exchange is stronger: the main air duct and the sub-air duct are designed to be nested with each other, forming a fractal air duct structure with geometric similarity, which allows air to flow freely and fully exchange heat with the heat dissipation fin, thereby improving heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the structure of the present utility model.

[0016] Figure 2 It is an exploded three-dimensional schematic diagram of an embodiment of the structure of the present utility model.

[0017] Figure 3 It is a front view schematic diagram of an embodiment of the structure of the present utility model.

[0018] Figure 4 It is an exploded front view schematic diagram of an embodiment of the structure of the present utility model.

[0019] Figure 5 It is a top view schematic diagram of an embodiment of the structure of the present utility model.

[0020] Figure 6 For an embodiment of the structure of the utility model, a cross section schematic view is shown.

[0021] Figures 1 to 6 Bottom hot plate (1) ; Two-layer fractal structure heat dissipation unit (2a, 2b, 2c, 2d, 2e) with sub-level hot plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0023] As shown in Figures 1 to 6, the embodiment provides a two-layer fractal structure combined heat sink with sub-level hot plate, which comprises a bottom hot plate (1) and a plurality of two-layer fractal structure heat dissipation units with sub-level hot plate, which are heat dissipation unit (2a), heat dissipation unit (2b), heat dissipation unit (2c), heat dissipation unit (2d) and heat dissipation unit (2e) respectively.

[0024] The materials of the bottom hot plate (1) and the heat dissipation units (2a, 2b, 2c, 2d, 2e) are all aluminum, copper or other high thermal conductivity materials. The heat dissipation units (2a, 2b, 2c, 2d, 2e) are fixed on the top of the bottom hot plate (1) by welding, and the side edges of adjacent heat dissipation units are welded and connected with each other to form a whole.

[0025] Among them, the heat dissipation units (2a, 2b, 2d, 2e) are respectively located on both sides of the bottom hot plate (1), and the heat dissipation unit (2c) is located at the center line position of the heat sink. Each heat dissipation unit (2a, 2b, 2d, 2e) is provided with three first layer heat dissipation teeth extending from the sub-level hot plate, and six second layer heat dissipation teeth are uniformly distributed on each first layer heat dissipation tooth along the length direction; the heat dissipation unit (2c) is provided with five first layer heat dissipation teeth extending from the sub-level hot plate, and eleven second layer heat dissipation teeth are uniformly distributed on the first layer heat dissipation tooth along the length direction.

[0026] The working principle of the utility model is as follows: the equipment heat is first evenly heated on the bottom heat plate (1), and after the heat is evenly dispersed to the sub-level heat plate on the heat dissipation unit (2a, 2b, 2c, 2d, 2e) through the bottom heat plate (1), the heat is evenly dispersed to the two layers of heat dissipation teeth with geometric similarity after the secondary heat on the sub-level heat plate on the heat dissipation unit (2a, 2b, 2c, 2d, 2e).

[0027] In the process, the connection between the adjacent heat dissipation units (2a, 2b, 2c, 2d, 2e) forms the main air duct, guarantees the air flow, and the two layers of heat dissipation teeth on the heat dissipation unit (2a, 2b, 2c, 2d, 2e) form the sub-air duct, which is used to strengthen the convection heat exchange effect.

[0028] Further, the design of the bottom heat plate and the sub-level heat plate in the process makes the heat distribution more uniform, the multi-level heat dissipation tooth design of the fractal structure increases the heat conduction path and the contact area of the heat dissipation fin and the air, improves the heat exchange efficiency, the main air duct and the sub-air duct are nested with each other, form the fractal air duct structure with geometric similarity, which makes the air flow freely and fully exchanges heat with the heat dissipation fin, thereby improving the heat dissipation efficiency.

[0029] Finally, it should be pointed out that: the above examples are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the utility model embodiments.

Claims

1. A two-layer fractal structure combined fin with a sub-level heat plate, characterized in that, The application relates to a heat dissipation device, which comprises a bottom heat plate and a plurality of heat dissipation units arranged on the bottom heat plate, each heat dissipation unit comprising a sub-level heat plate and at least two layers of heat dissipation teeth with geometric similarity, adjacent heat dissipation units are connected to form a main air duct, adjacent two layers of heat dissipation teeth on the heat dissipation unit form a sub-air duct, and the main air duct and the sub-air duct have geometric similarity. The heat dissipation units can be combined on the bottom heat plate as required, and the combined number is not less than two.

2. The fin of claim 1, wherein The sub-level heat plate on the heat dissipation unit extends at least three first layers of heat dissipation teeth, and the first layers of heat dissipation teeth are uniformly distributed with a plurality of second layers of heat dissipation teeth, and the two layers of heat dissipation teeth have geometric similarity.

3. The finned heat sink of claim 1 or 2, wherein, Part of the heat dissipation units are provided with three first layers of heat dissipation teeth and six second layers of heat dissipation teeth, and part of the heat dissipation units are provided with five first layers of heat dissipation teeth and eleven second layers of heat dissipation teeth.

4. The fin of claim 3 wherein, The first layers of heat dissipation teeth of part of the heat dissipation units form two sub-air ducts, and the second layers of heat dissipation teeth form three sub-air ducts; the first layers of heat dissipation teeth of part of the heat dissipation units form four sub-air ducts, and the second layers of heat dissipation teeth form six sub-air ducts.

5. The fin of claim 4 wherein, ​

Images