Liquid cooling heat dissipation structure

Abstract

The utility model provides a liquid cooling heat dissipation structure which comprises a heat dissipation plate, a plurality of prism heat dissipation fins are arranged on the heat dissipation plate in rows and columns, the cross section of each prism heat dissipation fin is rhombic, and the angle range of the sharp angle alpha of each rhombic is larger than 0 degree and smaller than or equal to 90 degrees. The range of the row and column gap L of the prism heat dissipation fins is 0.4 mm-2. 0mm, the range of the thickness D of the prism heat dissipation fins is 0.6 mm-2. 0mm, and the range of the height H of the prism heat dissipation fins is 3.0 mm-8. 0mm. According to the liquid cooling heat dissipation structure, the angle, the gap, the thickness and the height of the rhombic fins can be adjusted according to the heat dissipation power requirement of the heating module, the optimal heat dissipation requirement is met, the contact area is better, the heat dissipation performance is more effective, and the mold tool input cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation equipment technology, and in particular to a liquid cooling heat dissipation structure. Background Technology

[0002] Liquid-cooled heat sinks, also known as water-cooled plates or cold plates, are high-efficiency heat dissipation components. They reduce the temperature of devices or electronic components through their excellent heat dissipation performance, ensuring smooth operation of equipment. Currently, the common round and elliptical structures produced by cold forging, hot forging, and die casting have poor heat dissipation performance, high mold and tooling costs, and cannot be freely adjusted according to the heat dissipation power requirements of the heat-generating module, resulting in poor adaptability. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a liquid cooling heat dissipation structure and a method for manufacturing the heat dissipation structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a liquid cooling heat dissipation structure, including a heat dissipation plate, wherein a plurality of prism heat dissipation fins are arranged in rows and columns on the heat dissipation plate, the cross-section of the prism heat dissipation fins is rhomboid, the angle α of the rhomboid apex is in the range of 0°<a≤90°; the row and column spacing L of the prism heat dissipation fins is in the range of 0.4mm-2.0mm, the thickness D of the prism heat dissipation fins is in the range of 0.6mm-2.0mm, and the height H of the prism heat dissipation fins is in the range of 3.0mm-8.0mm.

[0005] Preferably, the angle of the rhombus apex α is 20°, 30°, 40°, 50°, 60°, 70°, 80° or 90°.

[0006] Preferably, the row and column spacing L of the prism heat dissipation fins is 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm or 2.0mm.

[0007] Preferably, the thickness D of the rhomboid heat dissipation fins is 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm or 2.0mm.

[0008] Preferably, the height H of the rhomboid heat dissipation fins is 3.0mm, 4.0mm, 5.0mm, 6.0mm, 7.0mm or 8.0mm.

[0009] Furthermore, the heat sink is provided with protrusions or grooves on its four edges.

[0010] Preferably, the liquid cooling structure is made of aluminum, copper, or a copper-aluminum composite material.

[0011] Furthermore, the prism heat dissipation fins have multiple first-direction grooves and multiple second-direction grooves. The first-direction grooves are parallel to each other, and the second-direction grooves are parallel to each other. The intersection of the first-direction grooves and the second-direction grooves forms the prism heat dissipation fins. The first-direction grooves and the second-direction grooves satisfy the following conditions with the liquid inlet direction F0 of the liquid cooling structure: the included angle between the first-direction grooves and the second-direction grooves is α, which is the same as the sharp angle α of the rhombus; the included angle β between the first-direction grooves and the liquid inlet direction F0 of the liquid cooling structure satisfies: β = α / 2.

[0012] Furthermore, the first and second directional grooves of the liquid cooling heat dissipation structure are machined using multi-layer stacked saw blade milling cutters. The multi-layer stacked saw blade milling cutter includes a cutter bar and several saw blades. The saw blades are axially arranged at equal intervals on the cutter bar, and the interval between adjacent saw blades is the same as the thickness D of the prism heat dissipation fins on the liquid cooling heat dissipation structure. The thickness of the saw blades is the same as the row and column spacing L of the prism heat dissipation fins.

[0013] The beneficial effects of this utility model are: The liquid cooling heat dissipation structure provided by this utility model (1) can adjust the angle, gap, thickness and height of the rhomboid fins according to the heat dissipation power requirements of the heat dissipation module to achieve the optimal heat dissipation requirements; (2) the minimum gap of this rhomboid fin structure can be 0.4mm, the maximum gap can be 2mm, and the maximum height can be 8mm, which has a better contact area; (3) using multi-layer stacked saw blade milling cutters, multiple blades with the same width size are set at a specified interval, and the thickness of multiple saw blades is also designed to be consistent, so that multiple grooves can be cut at the same time. The heat dissipation plate is cut in the first direction by the milling cutter. After the cutting is completed, the heat dissipation plate assembly is rotated and then the second direction groove is cut. After the cutting, rhomboid heat dissipation fins with fixed gap, thickness, angle and height are formed on the heat dissipation plate. The processing of this rhomboid structure is not limited to the multi-layer saw blade milling cutter stacking form; (4) compared with the common cold forging, hot forging and die casting methods of the current market, the circular and elliptical structures have more effective heat dissipation performance and lower mold tooling investment costs. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the liquid cooling heat dissipation structure of this utility model.

[0016] Figure 2 This is a top view schematic diagram of one embodiment of the liquid cooling heat dissipation structure of this utility model.

[0017] Figure 3 yes Figure 2 A magnified structural diagram of point A in the middle.

[0018] Figure 4 yes Figure 2 A side view of the liquid cooling structure.

[0019] Figure 5 This is a top view schematic diagram of another embodiment of the liquid cooling heat dissipation structure of this utility model.

[0020] Figure 6 yes Figure 5 A magnified structural diagram at point B in the middle.

[0021] Figure 7 yes Figure 5 A side view of the liquid cooling structure.

[0022] Figure 8 This is a schematic diagram of a multi-layered stacked saw blade milling cutter.

[0023] Figure 9 This is a schematic diagram of multi-layer stacked saw blade milling cutter processing.

[0024] In the diagram: 1. Heat sink, 1.1. Groove, 1.2. Protrusion, 2. Prismatic heat sink fins, 3. First direction groove, 4. Second direction groove, 5. Tool bar, 6. Saw blade. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components, orientations, and references (e.g., up, down, left, right, etc.) relevant to the present invention and are intended only to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0026] like Figure 1As shown, this utility model discloses a liquid cooling heat dissipation structure, including a heat dissipation plate 1. A plurality of prismatic heat dissipation fins 2 are arranged in rows and columns on the heat dissipation plate 1. The cross-section of each prismatic heat dissipation fin 2 is rhomboid. The angle of the apex, the gap, the thickness, and the height of the prismatic heat dissipation fins 2 can be freely adjusted according to the heat dissipation power requirements of the heat-generating module. The angle range of the rhomboid apex α is 0° < α ≤ 90°, and more preferably, the angle is 20°, 30°, 40°, 50°, 60°, 70°, 80°, or 90°. The row and column gap L of the prismatic heat dissipation fins 2 ranges from 0.4mm to 2.0mm, and more preferably, the row and column gap L is 0.4mm. The thickness D of the prism heat dissipation fin 2 ranges from 0.6mm to 2.0mm, and is further preferably 0.6mm, 0.8mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, or 2.0mm; the height H of the prism heat dissipation fin 2 ranges from 3.0mm to 8.0mm, and is further preferably 3.0mm, 4.0mm, 5.0mm, 6.0mm, 7.0mm, or 8.0mm. The liquid cooling structure is made of a material with relatively high thermal conductivity, including but not limited to aluminum, copper, and copper-aluminum composite materials. Example 1

[0027] like Figures 2-4 As shown, in this embodiment, the angle of the rhombus apex α is 90°, the row and column spacing L of the prism heat dissipation fins 2 is 0.8mm, the thickness D of the prism heat dissipation fins 2 is 0.8mm, and the height H of the prism heat dissipation fins 2 is 8mm. The prism heat dissipation fins 2 have multiple first-direction grooves 3 and multiple second-direction grooves 4. The first-direction grooves 3 are parallel to each other, and the second-direction grooves 4 are parallel to each other. The intersection of the first-direction grooves 3 and the second-direction grooves 4 forms the prism heat dissipation fins 2. The first-direction grooves 3 (grooves at the blue line in the figure) and the second-direction grooves (grooves at the red line in the figure) satisfy the following conditions with the liquid inlet direction F0 of the liquid cooling structure: the included angle between the first-direction grooves 3 and the second-direction grooves is α = 90°, the same as the rhombus apex α; the included angle β between the first-direction grooves 3 and the liquid inlet direction F0 of the liquid cooling structure satisfies: β = α / 2 = 45°. The direction of the first directional groove 3 is the first feed direction F1, and the direction of the second directional groove 4 is the second feed direction F2. Example 2

[0028] like Figures 5-7As shown, the difference between this embodiment and the previous embodiment lies in the different parameters of the prism heat dissipation fins 2. In this embodiment, the rhomboid apex a is 60°, the row and column gap L of the prism heat dissipation fins 2 is 0.8mm, the thickness D of the prism heat dissipation fins 2 is 0.8mm, the height H of the prism heat dissipation fins 2 is 6mm, and the heat dissipation plate 1 is also provided with protrusions 1.2 or grooves 1.1 on its four edges to facilitate connection with other components. The prism-shaped heat dissipation fins 2 have multiple first-direction grooves 3 and multiple second-direction grooves 4. The first-direction grooves 3 are parallel to each other, and the second-direction grooves 4 are parallel to each other. The intersection of the first-direction grooves 3 and the second-direction grooves 4 forms the prism-shaped heat dissipation fins 2. The first-direction grooves 3 (grooves at the blue line in the figure) and the second-direction grooves (grooves at the red line in the figure) satisfy the following conditions with the liquid inlet direction F0 of the liquid cooling structure: the included angle between the first-direction grooves 3 and the second-direction grooves is α = 60°, which is the same as the sharp angle α of the rhombus; the included angle β between the first-direction grooves 3 and the liquid inlet direction F0 of the liquid cooling structure satisfies: β = α / 2 = 30°. The direction of the first-direction grooves 3 is the first feed direction F1, and the direction of the second-direction grooves 4 is the second feed direction F2.

[0029] like Figure 8 As shown, the first directional groove 3 and the second directional groove 4 of the liquid cooling heat dissipation structure are machined using a multi-layer stacked saw blade 6 milling cutter. The multi-layer stacked saw blade 6 milling cutter includes a cutter bar 5 and several saw blades 6. The saw blades 6 are evenly spaced along the axial direction on the cutter bar 5, and the interval between adjacent saw blades 6 is the same as the thickness D of the prism heat dissipation fins 2 on the liquid cooling heat dissipation structure. The thickness of the saw blades 6 is the same as the row and column spacing L of the prism heat dissipation fins 2. In this embodiment, the saw blades 6 are circular thin slices with multiple saw teeth on the outer circumference. When machining the liquid cooling heat dissipation structure, the multi-layer stacked saw blade 6 milling cutter has a first feed direction F1 and a second feed direction F2. The feed direction F0 of the liquid cooling heat dissipation structure satisfies the following conditions: the included angle between the first feed direction F1 and the second feed direction F2 is α, which is the same as the sharp angle α of the rhombus; the included angle β between the first feed direction F1 and the liquid cooling heat dissipation structure satisfies: β=α / 2.

[0030] like Figure 9 The specific processing steps are shown below:

[0031] Raw material plate processing: Select a raw material plate that meets the thickness of heat sink 1 and the height of prism heat sink fin 2, and place the raw material plate in the processing setting to process the width of the edge. Form a boss on one side of the raw material plate, and the height of the boss is the same as the height of the prism heat sink fin 2.

[0032] Machining of the first directional groove 3: Determine the liquid inlet direction F0 of the liquid cooling structure when in use, adjust the first feed direction F1 of the multi-layer stacked saw blade 6 milling cutter so that the included angle β between the first feed direction F1 and the liquid inlet direction F0 of the liquid cooling structure satisfies: β=α / 2. Then, use the multi-layer stacked saw blade 6 milling cutter to mill and cut the first directional groove 3 on the boss along the first feed direction F1. Translate the raw material plate until the first directional groove 3 on the boss on the first feed direction F1 is completely cut.

[0033] Machining of the second direction groove 4: After the first direction groove 3 is machined, rotate the angle of the raw material plate and adjust the second feed direction F2 of the multi-layer stacked saw blade 6 milling cutter so that the included angle between the second feed direction F2 and the first feed direction F1 is the same as the rhombus tip angle a. Then, use the multi-layer stacked saw blade 6 milling cutter to mill and cut the second direction groove 4 on the boss along the second feed direction F2. Move the raw material plate until the second direction groove 4 on the boss on the second feed direction F2 is completely cut.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, 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 liquid-cooled heat dissipation structure, characterized in that: The device includes a heat sink with a plurality of prism-shaped heat sink fins arranged in rows and columns. The cross-section of each prism-shaped heat sink fin is rhomboid, and the angle α of the rhomboid apex is in the range of 0°<α≤90°. The row and column spacing L of the prism-shaped heat sink fins is in the range of 0.4mm-2.0mm, the thickness D of the prism-shaped heat sink fins is in the range of 0.6mm-2.0mm, and the height H of the prism-shaped heat sink fins is in the range of 3.0mm-8.0mm.

2. The liquid cooling heat dissipation structure as described in claim 1, characterized in that: The angle of the rhombus apex α is 20°, 30°, 40°, 50°, 60°, 70°, 80° or 90°.

3. The liquid cooling heat dissipation structure as described in claim 1, characterized in that: The row and column spacing L of the prism heat dissipation fins is 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm or 2.0mm.

4. The liquid cooling heat dissipation structure as described in claim 1, characterized in that: The thickness D of the prism heat dissipation fins is 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm or 2.0mm.

5. The liquid cooling heat dissipation structure as described in claim 1, characterized in that: The height H of the prism heat dissipation fins is 3.0mm, 4.0mm, 5.0mm, 6.0mm, 7.0mm or 8.0mm.

6. The liquid cooling heat dissipation structure as described in claim 1, characterized in that: The heat sink also has protrusions or grooves on its four edges.

7. The liquid cooling heat dissipation structure as described in claim 1, characterized in that: The liquid cooling structure is made of aluminum, copper, or copper-aluminum composite materials.

8. The liquid cooling heat dissipation structure as described in claim 1, characterized in that: The prism heat dissipation fins have multiple first-direction grooves and multiple second-direction grooves. The first-direction grooves are parallel to each other, and the second-direction grooves are parallel to each other. The intersection of the first-direction grooves and the second-direction grooves forms the prism heat dissipation fins. The first-direction grooves and the second-direction grooves satisfy the following condition with the liquid inlet direction F0 of the liquid cooling structure: the included angle between the first-direction grooves and the second-direction grooves is α, which is the same as the sharp angle α of the rhombus. The angle β between the first directional groove and the liquid inlet direction F0 of the liquid cooling structure satisfies: β = α / 2.

9. The liquid cooling heat dissipation structure as described in claim 8, characterized in that: The first and second directional grooves of the liquid cooling heat dissipation structure are machined using multi-layer stacked saw blade milling cutters. The multi-layer stacked saw blade milling cutter includes a cutter bar and several saw blades. The saw blades are arranged axially at equal intervals on the cutter bar, and the interval between adjacent saw blades is the same as the thickness D of the prism heat dissipation fins on the liquid cooling heat dissipation structure. The thickness of the saw blades is the same as the row and column spacing L of the prism heat dissipation fins.

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