Air-cooling heat dissipation device for high-power component

Abstract

The invention relates to an air-cooled heat dissipation device for a high-power component, which comprises a case frame, a heat dissipation fan and a heat dissipation module, and is characterized in that the heat dissipation module comprises a heat dissipation plate, a first heat dissipation device and a second heat dissipation device; the heat dissipation module is erected in the case frame, and the components are installed on the heat dissipation plate. The first radiator is clamped between the two radiating plates; the air outlet of the second radiator is connected with the air inlet of the first radiator; the cooling fan is located at an air inlet of the second radiator; the section of the first radiator is rectangular, and a plurality of first radiating fins are arranged in the first radiator; and the section of the second radiator is trapezoidal. Compared with the prior art, the large end of the second radiator is aligned with the cooling fan, gas blown out of the cooling fan flows to the small air outlet of the first radiator from the large air inlet of the second radiator, the pressure of the gas is reduced in the throttling process, the volume of the gas is expanded, and then internal energy is reduced; therefore, the effect of reducing the temperature is achieved.

Description

Technical Field

[0001] The present invention relates to heat dissipation of components, and in particular to an air-cooling heat dissipation device for high-power components. Background Art

[0002] In the field of heat dissipation of high-power components, the engineering of thermodynamic balance is extremely challenging. Miniaturized heat dissipation structures are difficult to maintain the necessary thermal resistance parameters, and mobile usage scenarios are in conflict with large-scale heat dissipation structures.

[0003] There are many problems with the air duct design of existing air cooling systems. For example, the heat sink fins of existing medical high-power components are large and thick, occupying a large amount of air duct space and invisibly increasing the weight of the entire device.

[0004] Current liquid cooling systems provide heat dissipation for high-power components. The pumps and heat exchangers in liquid cooling systems also have incompressible volume requirements and are less reliable than air-cooled heat sinks. Once the circulating coolant in the liquid cooling system leaks, the power supply and components inside the chassis may be damaged, causing property loss and even endangering personal safety.

[0005] After searching, application publication number CN109213293A discloses a heat dissipation device, specifically comprising a radiator, an air scoop, a first cooling fan, and a second cooling fan. The air scoop and the first cooling fan are fixed side by side on a first side of the radiator. The air scoop is positioned between the radiator and the second cooling fan, with the outlet of the air scoop facing the air inlet of the second cooling fan. The air inlet of the second cooling fan is partially exposed to the air scoop. When the second cooling fan is operated, heat introduced into the air scoop is discharged out of the computer case through the exhaust vent. When the first cooling fan is operated, heat dissipated from the radiator is discharged to the side of the first cooling fan near the second cooling fan and flows into the portion of the second cooling fan exposed to the air scoop. The heat is then discharged out of the computer case through the exhaust vent by the second cooling fan. However, this prior art only uses two fans installed in different positions to discharge heat through the exhaust vent, resulting in poor heat dissipation.

[0006] In summary, how to provide an air-cooling heat dissipation device that is lightweight, compact, highly safe, and has good heat dissipation effect is a technical problem that needs to be solved. Summary of the Invention

[0007] The purpose of the present invention is to provide an air-cooled heat dissipation device for high-power components in order to overcome the defects of the above-mentioned prior art, such as large size, low safety and poor heat dissipation effect.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] According to one aspect of the present invention, there is provided an air-cooling heat dissipation device for high-power components, comprising a chassis frame, a heat dissipation fan, and at least one heat dissipation module, wherein the heat dissipation module comprises a heat dissipation plate, a first heat sink, and a second heat sink;

[0010] The heat dissipation module is mounted in the chassis frame, and the components are mounted on the heat dissipation plates; the first heat sink is sandwiched between two heat dissipation plates; the air outlet of the second heat sink is connected to the air inlet of the first heat sink; the heat dissipation fan is located at the air inlet of the second heat sink; and the air blowing direction of the heat dissipation fan is the first direction;

[0011] The cross-section of the first heat sink along the first direction and perpendicular to the heat sink is rectangular, and a plurality of first heat sink fins are provided inside the first heat sink. The first heat sink fins are parallel to the rectangular cross-section of the first heat sink and have the same shape as the rectangular cross-section;

[0012] The cross-section of the second radiator along the first direction and perpendicular to the heat dissipation plate is a trapezoid, the lower base of the trapezoid is located on the side where the heat dissipation fan is located, and the upper base is connected to the first radiator.

[0013] As a preferred technical solution, the second radiator is provided with multiple second cooling fins, and the shape of the second cooling fins is the same as the trapezoidal cross-section of the second radiator; a second cooling fin corresponds to a first cooling fin one by one and is in the same plane.

[0014] As a preferred technical solution, the plurality of first heat dissipation fins are arranged at equal intervals.

[0015] As a preferred technical solution, the air outlet of the second radiator and the air inlet of the first radiator have the same shape.

[0016] As a preferred technical solution, the first radiator is in the shape of a cube as a whole, and the second radiator is in the shape of a quadrangular pyramid as a whole; the two opposite sides of the first radiator are the air inlet and the air outlet respectively; the lower bottom surface of the second radiator is the air inlet, and the upper bottom surface is the air outlet; the air outlet of the second radiator coincides with the air inlet of the first radiator.

[0017] As a preferred technical solution, limiting blocks are provided on both sides of the heat dissipation plate, and the first radiator is clamped between the limiting blocks on both sides.

[0018] As an optimal technical solution, a cooling fan mounting plate is installed on the side of the chassis frame, an air hole is opened on the cooling fan mounting plate, and the cooling fan is installed in the air hole; the cooling fan is connected to the cooling fan mounting plate through a rivet nut and a threaded screw; the cooling fan is attached to one side of the second radiator.

[0019] As a preferred technical solution, the heat dissipation plate is a copper-aluminum composite plate; and the chassis frame is an aluminum alloy chassis frame.

[0020] As a preferred technical solution, the edge of the heat sink is provided with fixing holes arranged in a linear array, and the threaded screw passes through the fixing holes and is connected to the chassis frame.

[0021] As a preferred technical solution, there are multiple cooling fans, and they are silent fans.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) The larger end of the second radiator of the present invention is aligned with the cooling fan, and the gas blown out by the cooling fan flows from the larger second radiator air inlet to the smaller first radiator air outlet. The gas pressure decreases and the volume expands during the throttling process, which leads to a reduction in internal energy, thereby achieving the effect of lowering the temperature; the heat sink, the first radiator and the second radiator form a heat dissipation module, and multiple heat dissipation modules can be installed in the chassis frame to meet different needs; the multiple first heat dissipation fins form a slender air duct in the first radiator, and the slender air duct can maintain the wind pressure and make the wind speed attenuation weaker. At the same time, it can increase the total heat dissipation area and discharge heat faster.

[0024] 2) The air outlet of the second radiator of the present invention overlaps with the air inlet of the first radiator so that the gas does not flow to the outside of the radiator, thereby ensuring the heat dissipation effect of the radiator.

[0025] 3) The present invention provides a second heat dissipation fin, which further increases the heat dissipation area, and the second heat dissipation fin and the first heat dissipation fin correspond one-to-one to form a gas flow channel that passes through the second radiator and the first radiator, which is conducive to maintaining wind pressure and improving heat dissipation performance.

[0026] 4) The heat dissipation fan mounting plate and the heat dissipation fan of the present invention are connected by means of a rivet nut and a threaded screw rod, and the installation steps are simple and the assembly is convenient.

[0027] 5) The first radiator of the present invention is clamped between the limit blocks on both sides of the heat dissipation plate, which can not only limit the lateral displacement of the first radiator, but also provide lateral support to the first radiator to a certain extent, further improving the reliability of the mechanical connection.

[0028] 6) The present invention adopts an aluminum alloy chassis frame, which achieves lightweight while ensuring reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a first schematic diagram of the overall structure of an air-cooling heat dissipation device for high-power components of the present invention;

[0030] Figure 2This is a second schematic diagram of the overall structure of an air-cooling heat dissipation device for high-power components of the present invention;

[0031] Figure 3 This is a schematic structural diagram of the heat dissipation module of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the heat dissipation fan mounting plate of the present invention;

[0033] Figure 5 This is a schematic diagram of the installation position of the cooling fan and the cooling module of the present invention;

[0034] The numbers in the figure show:

[0035] 1. Chassis frame, 2. Cooling fan, 30. Heat sink, 300. Limit block, 301. Fixing hole, 31. First radiator, 310. First cooling fin, 32. Second radiator, 320. Second cooling fin, 4. Components, 5. Cooling fan mounting plate, 50. Air hole, 51. Rivet nut. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0037] like Figure 1 and Figure 2 As shown, the present invention provides an air-cooling heat dissipation device for high-power components, comprising a chassis frame 1, a heat dissipation fan 2, and at least one heat dissipation module. It can be used for medical high-power thulium lasers.

[0038] The chassis frame 1 is made of aluminum alloy, which ensures reliability while achieving lightness.

[0039] like Figure 3 As shown, the heat dissipation module includes a heat dissipation plate 30 , a first heat sink 31 and a second heat sink 32 .

[0040] The heat dissipation module is installed in the chassis frame 1. When there are multiple heat dissipation modules, they are stacked in sequence, and two adjacent heat dissipation modules are arranged at intervals. If there is a need later, only the number of layers needs to be stacked, which is convenient for upgrading.

[0041] The heat sink 30 is an aluminum-copper composite plate with a linear array of fixing holes 301 along its edge. It is screwed to the chassis frame 1 via a large screw thread. This not only ensures the normal passage of the large screw thread, but also acts as a limiter for the heat sink 30, allowing the heat dissipation components 4 to be installed on the aluminum-copper composite plate. A first heat sink 31 is welded between the two heat sinks 30. The first heat sink 31 is a rectangular parallelepiped with two opposing sides that serve as an air inlet and outlet. The second heat sink 32 is a quadrangular pyramid with an air inlet on the bottom and an air outlet on the top. The air outlet of the second heat sink 32 overlaps and is welded to the air inlet of the first heat sink 31. The first and second heat sinks 31 and 32 form a stable, laterally sealed air duct, with the cooling fan 2 located on the air inlet side of the second heat sink 32. The two heat sinks 30 are supported on both sides by long limit blocks 300. The limit blocks 300 can not only limit the lateral displacement of the first radiator 31 (i.e., the displacement in the direction of the limit blocks 300), but also provide lateral support to the first radiator 31 to a certain extent, thereby further improving the reliability of the mechanical connection.

[0042] The first heat sink 31 is provided with a plurality of first metal heat sink fins 310. The first heat sink fins 310 extend along the direction of gas flow and are perpendicular to the heat sink 30. The first heat sink fins 310 have the same cross-sectional shape as the first heat sink 31 and completely fit the inner wall of the first heat sink 31. If the first heat sink 31 is long (the distance from the air inlet to the air outlet), multiple first heat sink fins 310 can be overlapped. Multiple first heat sink fins 310 are arranged at equal intervals.

[0043] The second heat sink 32 is provided with a plurality of metal second heat sink fins 320. The second heat sink fins 320 extend along the direction of gas flow and are perpendicular to the heat sink 30. The second heat sink fins 320 have the same cross-sectional shape as the second heat sink 32 and completely fit the inner wall of the second heat sink 32. The plurality of second heat sink fins 320 are arranged at equal intervals.

[0044] The first heat sink fins 310 and the second heat sink fins 320 correspond one-to-one, and two adjacent first heat sink fins 310 and second heat sink fins 320 form an air duct. Because the first heat sink 31 and the second heat sink 32 are divided by the first heat sink fins 310 and the second heat sink fins 320, respectively, the air duct is much narrower than its length, resulting in a slender overall shape. This slender air duct maintains wind pressure, reduces wind speed attenuation, and increases the total heat dissipation area, allowing for faster heat dissipation.

[0045] like Figure 4As shown, a cooling fan mounting plate 5 is installed on the side of the chassis frame 1 near the air inlet of the second radiator 32, and air holes 50 are provided on the cooling fan mounting plate 5. The number of air holes 50 is the same as the number of cooling fans 2. The cooling fan 2 is installed in the air holes 50 and is connected to the cooling fan mounting plate 5 by means of rivet nuts 51 and threaded screws; the rivet nuts 51 are installed on the cooling fan mounting plate 5 in advance, which not only reduces the number of assembly parts, but also simplifies the assembly procedure. When fixing the cooling fan 2, it is only necessary to screw in the small threaded screw from the front. The cooling fan mounting plate 5 is provided with a connecting hole that cooperates with the small threaded screw, which not only ensures that the small threaded screw passes through normally, but also serves as a limit for the cooling fan 2.

[0046] like Figure 5 As shown, the cooling fan 2 is closely attached to the air inlet of the second radiator 32. There are multiple cooling fans 2 to ensure uniform heat dissipation of the cooling module and greatly improve the heat dissipation efficiency; the cooling fan 2 is a silent fan, which can greatly reduce noise.

[0047] When the cooling fan 2 is working, low-temperature airflow enters from the larger air inlet of the second radiator 32, flows through the second radiator 32 and the first radiator 31, and flows out from the smaller air outlet of the first radiator 31, taking away the heat generated by the components 4 on the heat sink 30. The gas flows from the larger end to the smaller end, and a throttling expansion process occurs, which reduces its own temperature and greatly improves the heat dissipation efficiency.

[0048] The working principle of the present invention is:

[0049] When the components 4 on the heat sink 30 become highly heated and dissipate a large amount of heat, the cooling fan 2 is turned on at this time, so that the blades on the cooling fan 2 rotate at high speed to blow the external low-temperature airflow into the second heat sink 32 through the air inlet of the second heat sink 32, and then the low-temperature airflow enters the first heat sink 31 through the second heat sink 32, and the low-temperature airflow is heated up to become high-temperature airflow. Since the cross-section of the larger end of the second heat sink 32 is greatly reduced compared to the cross-section of the first heat sink 31, when the airflow passes through the cross-section of the first heat sink 31, the pressure drops sharply, the gas volume expands, and the distance between molecules becomes larger. In order to overcome the attraction between molecules, the gas needs to consume its own internal energy (internal energy), which causes the temperature to drop. Finally, the gas is discharged from the other end of the first heat sink 31 to the outside of the chassis frame 1, effectively achieving the effect of heat exchange and cooling of various components 4 on the heat sink 30.

[0050] The present invention aligns the larger end of the second radiator 32 with the cooling fan 2. Since the cross-section of the larger end of the second radiator 32 is larger than the cross-section of the first radiator 31, the pressure of the gas decreases and the volume expands during the throttling process, thereby reducing the internal energy, thereby achieving the effect of lowering the temperature. This can solve the problem of power instability caused by the poor heat dissipation effect of the existing heat dissipation structure of the air-cooled component 4.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An air-cooling heat sink for high-power components, characterized in that: It comprises a chassis frame (1), a cooling fan (2) and at least one cooling module, wherein the cooling module comprises a cooling plate (30), a first heat sink (31) and a second heat sink (32); The heat dissipation module is mounted in a chassis frame (1), and the components (4) are mounted on a heat dissipation plate (30); the first heat sink (31) is sandwiched between two heat dissipation plates (30); the air outlet of the second heat sink (32) is connected to the air inlet of the first heat sink (31); the heat dissipation fan (2) is located at the air inlet of the second heat sink (32); the blowing direction of the heat dissipation fan (2) is a first direction; The cross-section of the first radiator (31) along the first direction and perpendicular to the heat dissipation plate (30) is rectangular, and a plurality of first heat dissipation fins (310) are provided inside the first radiator (31), and the first heat dissipation fins (310) are parallel to the rectangular cross-section of the first radiator (31) and have the same shape as the rectangular cross-section; The cross-sectional shape of the second radiator (32) along the first direction and perpendicular to the heat dissipation plate (30) is a trapezoid, the lower base of the trapezoid is located on the side where the heat dissipation fan (2) is located, and the upper base is connected to the first radiator (31).

2. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: The second heat sink (32) is provided with a plurality of second heat sink fins (320), and the shape of the second heat sink fins (320) is the same as the trapezoidal cross-section of the second heat sink (32); one second heat sink fin (320) corresponds to one first heat sink fin (310) one by one and is located in the same plane.

3. An air-cooling heat sink for high-power components according to claim 1 or 2, characterized in that: The plurality of first heat dissipation fins (310) are arranged at equal intervals.

4. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: The air outlet of the second radiator (32) and the air inlet of the first radiator (31) have the same shape.

5. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: The first radiator (31) is in the shape of a cube as a whole, and the second radiator (32) is in the shape of a quadrangular pyramid as a whole; the two opposite sides of the first radiator (31) are respectively an air inlet and an air outlet; the lower bottom surface of the second radiator (32) is an air inlet, and the upper bottom surface is an air outlet; the air outlet of the second radiator (32) coincides with the air inlet of the first radiator (31).

6. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: Limit blocks (300) are provided on both sides of the heat dissipation plate (30), and the first heat sink (31) is clamped between the limit blocks (300) on both sides.

7. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: A cooling fan mounting plate (5) is installed on the side of the chassis frame (1), an air hole (50) is provided on the cooling fan mounting plate (5), and the cooling fan (2) is installed in the air hole (50); the cooling fan (2) is connected to the cooling fan mounting plate (5) through a rivet nut (51) and a threaded screw; the cooling fan (2) is attached to one side of the second radiator (32).

8. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: The heat dissipation plate (30) is a copper-aluminum composite plate; and the chassis frame (1) is an aluminum alloy chassis frame (1).

9. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: The edge of the heat dissipation plate (30) is provided with fixing holes (301) arranged in a linear array, and the threaded screw passes through the fixing holes (301) and is connected to the chassis frame (1).

10. The air-cooling heat dissipation device for high-power components according to claim 1, characterized in that: The heat dissipation fans (2) are multiple and are silent fans.

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