Fishway type CPU water-cooling heat dissipation head structure

Abstract

The utility model relates to a fishway type CPU water-cooling heat dissipation head structure which comprises a cooling liquid outlet, steering fins and a cooling liquid inlet, and a cooling liquid flow channel extending from the cooling liquid inlet to the cooling liquid outlet is formed through cooperation of the multiple sets of steering fins. Heat dissipation fins distributed in a staggered mode are arranged on the two inner side walls of the cooling liquid flow channel along the track of the cooling liquid flow channel, and one side of each heat dissipation fin is concaved inwards to form an arc bent shape with the angle larger than 180 degrees. Due to the adoption of the design of the staggered cooling fins simulating the fishway grooves, when cooling liquid flows through the staggered cooling fins, due to the bent and staggered structure of a flow channel, the cooling liquid forms a complex flowing path among the cooling fins, and reverse backflow is generated. The reverse backflow impacts the back of the last-stage heat dissipation fin, the stability of the boundary layer is further destroyed, the turbulence effect is enhanced, and therefore the thickness of the boundary layer is effectively reduced, and the heat exchange efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid cooling heat dissipation device technical field, concretely relates to a fish pass formula CPU water cooling heat dissipation head structure. BACKGROUND

[0002] In the field of microelectronics science, there is a phenomenon called "electron migration". The "electron migration" phenomenon under overheating and strong current is one of the important reasons for damaging computer CPU chips. The "electron migration" phenomenon refers to that when the momentum of the moving electrons acts on the metal atoms, the metal atoms are separated from the surface and flow, causing the metal surface to become uneven and causing permanent damage. Under the condition of overheating and high temperature, the movement of free electrons in the computer CPU chip is more intense, and the momentum and kinetic energy exchange after collision with metal atoms increase, making it more likely to appear surface damage and unevenness. Overheating greatly shortens the service life of the computer CPU internal chip. Therefore, it is particularly important to control the CPU temperature below 50 DEG C through heat dissipation technology.

[0003] With the continuous improvement of computer performance, the working load of CPU is also increasing, which can easily lead to overheating. The traditional water cooling heat dissipation head structure has been difficult to meet the demand of efficient heat dissipation when coping with the complex and diverse working load. Therefore, from the perspective of space structure optimization, improving the water cooling heat dissipation efficiency has become an important research direction.

[0004] For example, the patent announcement number CN209086850U announced "a novel CPU water cooling heat dissipation head structure", the water cooling head is divided by fin, which presents a long strip-shaped flow channel. The water cooling liquid enters the water cooling head from one side opening, and flows out from the other side after fully exchanging heat with the fin. It can increase the heat exchange area of the water cooling head in limited space, and under the action of turning fin in the channel, promote the separation of flow boundary layer, reduce the thickness of boundary layer, and improve the heat exchange efficiency.

[0005] However, the flow of cooling liquid in the flow channel is relatively single, mainly depends on the separation of boundary layer to enhance heat exchange, and cannot form reverse backflow. Its heat dissipation efficiency improvement space is limited under high heat generation scene, and the adaptability to complex working conditions is insufficient. UTILITY MODEL CONTENTS

[0006] In view of the defects of the prior art, the utility model provides a fish pass formula CPU water cooling heat dissipation head structure to solve the above problems.

[0007] The utility model provides the following technical scheme:

[0008] The fishway type CPU water cooling heat dissipation head structure comprises a cooling liquid outlet, a turning fin and a cooling liquid inlet, and a cooling liquid flow channel extending from the cooling liquid inlet to the cooling liquid outlet is formed through a plurality of groups of the turning fins.

[0009] Two inner side walls of the cooling liquid flow channel are provided with staggered distributed heat dissipation fins along the trajectories, and one side of the heat dissipation fins is concave to form a 180° or more circular arc bending shape.

[0010] Preferably, a lower bottom plate is further included, and four corners of the lower bottom plate are provided with through holes for cooperation with the main plate.

[0011] Preferably, the CPU water cooling heat dissipation head structure is made of pure copper material.

[0012] Preferably, one end of the heat dissipation fin extends to the circular arc bending shape inside concave formed by the other group of heat dissipation fins.

[0013] The fishway type CPU water cooling heat dissipation head structure has the following beneficial technical effects:

[0014] The fishway type CPU water cooling heat dissipation head structure can increase the heat exchange area inside the water cooling head in limited space, and after the heat dissipation fluid enters the fishway groove heat dissipation fin, reverse backflow impact on the back of the upper level fishway groove fin is formed, further reducing the boundary layer thickness, improving the heat exchange capacity and strengthening the heat exchange efficiency.

[0015] The fishway type CPU water cooling heat dissipation head structure has the following beneficial technical effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the fishway type CPU water cooling heat dissipation head structure;

[0017] Figure 2 is a sectional view of the fishway type CPU water cooling heat dissipation head structure; Figure 1

[0018] Figure 3 is a top view of the fishway type CPU water cooling heat dissipation head structure; Figure 2

[0019] Figure 4 is a partial schematic view of the heat dissipation fin arrangement of the two inner sides of the cooling liquid flow channel of the fishway type CPU water cooling heat dissipation head structure.

[0020] The reference signs in the drawings are as follows:

[0021] ​​1. Heat dissipation fins; 2. Coolant outlet; 3. Steering fins; 4. Coolant inlet; 5. Through hole; 6. Bottom plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example:

[0024] A fish-path style CPU water cooling head structure, such as Figures 1-2 As shown: It includes heat dissipation fins 1, coolant outlet 2, directional fins 3, coolant inlet 4, through holes 5, and a bottom plate 6. The CPU water cooling head structure is made of pure copper. The CPU water cooling head structure is connected to the motherboard through the through holes 5 at the four corners of the bottom plate 6. A pure copper shell is set on one side of the bottom plate 6. One side wall of the shell is provided with coolant outlet 2 and coolant inlet 4. Multiple directional fins 3 are fixedly set in the inner cavity of the shell. Through the cooperation of multiple directional fins 3, the inner cavity of the shell forms a serpentine coolant flow channel extending from coolant inlet 4 to coolant outlet 2. The corners of the serpentine coolant flow channel are right angles.

[0025] like Figures 3-4 As shown, heat dissipation fins 1 are provided on both inner walls of the coolant flow channel along its trajectory, and the heat dissipation fins 1 on the two inner walls are arranged in a staggered, one-to-one correspondence. One side of the heat dissipation fin 1 is concave to form an arc curvature of more than 180°, as shown. Figure 4 The green dashed line indicates the missing portion of the non-circular, curved heat dissipation fin 1. The angle α of the missing portion of the non-circular heat dissipation fin 1 is 120°-150° (preferably 135°). The free end of the heat dissipation fin 1 extends to the missing portion of another set of non-circular, curved heat dissipation fins 1 that cooperate with it. The two rows of heat dissipation fins 1 arranged in an alternating pattern form a fish-like channel structure. Figure 4 The arrows indicate the direction of coolant flow within the coolant channels.

[0026] During the flow of coolant, the curved heat dissipation fins 1 with an arc shape of more than 180° will guide the coolant to generate a reverse flow and impact the back of the matching primary heat dissipation fins 1, thereby disrupting the stability of the boundary layer and reducing the flow rate of the coolant.

[0027] The curved heat dissipation fins 1 can provide a larger heat dissipation surface area within the same volume or space, increasing the surface area in contact with the fluid and thus improving heat dissipation efficiency.

[0028] The arc-bent heat dissipation fin 1 can guide the cooling liquid to generate turbulent flow, in the turbulent flow state, the flow of the fluid is more complex, the stability of the boundary layer is destroyed, thereby significantly increasing the heat exchange efficiency.

[0029] The arc-bent heat dissipation fin 1 can guide the fluid to flow along the arc-shaped path, reduce the dead zone and local vortex of the fluid in the flow channel.

[0030] Compared with the linear structure, the arc-bent heat dissipation fin 1 requires lower pumping power under the same condition.

[0031] Working principle:

[0032] The water cooling liquid enters the cooling liquid flow channel from the cooling liquid inlet 4, and after fully exchanging heat with the heat dissipation fin 1 and the turning fin 3, the water cooling liquid flows out from the cooling liquid outlet 2, and then is cooled by the external cooler, and then enters the CPU cooling water cooling head from the cooling liquid inlet 4 again, to complete the cycle cooling process.

[0033] The above-described embodiments only express the specific implementation of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application.

Claims

1. A fish-channel type CPU water-cooled heat sink structure, comprising a coolant outlet (2), directional fins (3), and a coolant inlet (4), wherein multiple sets of the directional fins (3) cooperate to form a coolant flow channel extending from the coolant inlet (4) to the coolant outlet (2), characterized in that: The two inner walls of the coolant flow channel are provided with staggered heat dissipation fins (1) along their trajectory, and one side of the heat dissipation fins (1) is concave to form a curved structure of more than 180°.

2. The fish-channel type CPU water-cooling head structure according to claim 1, characterized in that, It also includes a lower base plate (6), which has through holes (5) at its four corners for cooperating with the main board.

3. The fish-channel type CPU water-cooling head structure according to claim 1 or 2, characterized in that, The CPU water cooling head is made entirely of pure copper.

4. The fish-channel type CPU water-cooling head structure according to claim 1, characterized in that, One end of the heat dissipation fin (1) extends into the concave arc-shaped interior formed by the other set of heat dissipation fins (1) that cooperate with it.

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