Parameter design method and system for diamond pin tooth copper heat sink

Abstract

The invention discloses a diamond pin tooth copper heat sink parameter design method and system, and relates to the technical field of heat sinks, and the method comprises the steps: designing a diamond pin tooth copper heat sink, inputting the diamond side length, the diamond height, the diamond attack angle and the flow channel width of a diamond cooling fin into a pressure loss model, and obtaining the pressure loss; the rhombus side length, the rhombus height, the rhombus attack angle and the flow channel width of the rhombus cooling fin are input into a bottom face equivalent convective heat transfer coefficient model, and a bottom face equivalent convective heat transfer coefficient is obtained; and when the pressure loss of the rhombus pin tooth copper heat sink is not higher than the conveying pressure value of the water pump and the equivalent convective heat transfer coefficient of the bottom surface is not smaller than the set heat transfer capacity value, the rhombus side length, the rhombus height, the rhombus attack angle and the flow channel width of the rhombus heat dissipation fins used for obtaining the pressure loss and the equivalent convective heat transfer coefficient of the bottom surface meet the heat dissipation requirement. According to the invention, parameters of the diamond-shaped pin tooth copper heat sink, which simultaneously meet the requirements of pressure loss and heat dissipation, can be designed.

Description

Technical Field

[0001] The present invention relates to the technical field of heat sinks, and particularly to a parameter design method, system, device and medium for a diamond pin-fin copper heat sink. Background Art

[0002] Heat sinks are applied in high-tech fields such as semiconductor processing, high-power electronic devices, laser technology and aerospace. As a heat conduction medium, they have efficient heat dissipation capabilities. When a diamond heat sink is in use, a liquid-cooling water pump drives a coolant to flow through the heat sink, absorbs the heat on the heat sink, thereby reducing the temperature of the heat sink and meeting the heat dissipation requirements.

[0003] In the prior art, due to the large number of parameters of the diamond heat sink, there is no clear design idea in the design process. Only through repeated simulations and experiments can relatively satisfactory parameters be obtained, which is time-consuming and laborious, and still excellent parameters cannot be obtained. It is found that the pressure loss and the equivalent bottom surface average convective heat transfer coefficient representing the heat transfer performance, as two important indicators reflecting the heat dissipation performance of the heat sink, are affected by multiple parameters of the diamond heat sink.

[0004] Therefore, how to quickly obtain the design parameters of the diamond heat sink so that the designed diamond heat sink can meet the heat dissipation requirements within the pressure range provided by the water pump is an important problem to be solved urgently. Summary of the Invention

[0005] Embodiments of the present invention provide a parameter design method, system, device and medium for a diamond pin-fin copper heat sink, which can solve the problem in the prior art that the design parameters of the diamond heat sink cannot be quickly obtained so that the designed diamond heat sink can meet the heat dissipation requirements within the pressure range provided by the water pump.

[0006] Embodiments of the present invention provide a parameter design method for a diamond pin-fin copper heat sink, including the following steps: Design a diamond pin-fin copper heat sink, where flow channels for passing a coolant are provided around the diamond-shaped heat dissipation fins of the diamond pin-fin copper heat sink; send the coolant into the flow channels through a water pump; input the diamond side length, diamond height, diamond attack angle and flow channel width of the diamond-shaped heat dissipation fins into a pressure loss model for representing the degree of coolant pressure loss to obtain the pressure loss of the diamond pin-fin copper heat sink; input the diamond side length, diamond height, diamond attack angle and flow channel width of the diamond-shaped heat dissipation fins into a bottom surface equivalent convective heat transfer coefficient model for representing the heat transfer capacity to obtain the bottom surface equivalent convective heat transfer coefficient of the diamond pin-fin copper heat sink; when the pressure loss of the diamond pin-fin copper heat sink is not higher than the pressure value delivered by the water pump and the bottom surface equivalent convective heat transfer coefficient is not less than the set heat transfer capacity value, use the diamond side length, diamond height, diamond attack angle and flow channel width of the diamond-shaped heat dissipation fins used to obtain the pressure loss and the bottom surface equivalent convective heat transfer coefficient as the design parameters of the diamond pin-fin copper heat sink.

[0007] Further, the pressure loss model P has the formula: where L represents the side length of the rhombus of the rhombic heat dissipation fins, H represents the height of the rhombus, W represents the channel width, and θ represents the attack angle of the rhombus.

[0008] Further, the bottom surface equivalent convective heat transfer coefficient model HTC has the formula: where L represents the side length of the rhombus of the rhombic heat dissipation fins, H represents the height of the rhombus, W represents the channel width, and θ represents the attack angle of the rhombus.

[0009] Further, the rhombus height is the vertical distance from the top of the rhombic heat dissipation fins to the bottom of the channel.

[0010] Further, the rhombus attack angle is the angle corresponding to one corner of the rhombic heat dissipation fins that diverts the coolant when the coolant flows into each heat dissipation unit.

[0011] Further, the channel width is the distance between two adjacent side lengths of the rhombus when the side lengths of the rhombic heat dissipation fins are parallel to each other.

[0012] An embodiment of the present invention provides a parameter design system for a rhombic pin-fin copper heat sink, including: A rhombic pin-fin copper heat sink design module for designing a rhombic pin-fin copper heat sink, where flow channels for passing coolant are provided around the rhombic heat dissipation fins of the rhombic pin-fin copper heat sink; the coolant is sent into the flow channels through a water pump; A pressure loss acquisition module for inputting the side length of the rhombus, the height of the rhombus, the attack angle of the rhombus, and the channel width of the rhombic heat dissipation fins into a pressure loss model for representing the degree of coolant pressure loss, and obtaining the pressure loss of the rhombic pin-fin copper heat sink; A heat transfer capacity acquisition module for inputting the side length of the rhombus, the height of the rhombus, the attack angle of the rhombus, and the channel width of the rhombic heat dissipation fins into a bottom surface equivalent convective heat transfer coefficient model for representing the heat transfer capacity, and obtaining the bottom surface equivalent convective heat transfer coefficient of the rhombic pin-fin copper heat sink; A parameter design module for, when the pressure loss of the rhombic pin-fin copper heat sink is not higher than the pressure value delivered by the water pump and the bottom surface equivalent convective heat transfer coefficient is not less than the set heat transfer capacity value, taking the side length of the rhombus, the height of the rhombus, the attack angle of the rhombus, and the channel width of the rhombic heat dissipation fins used to obtain the pressure loss and the bottom surface equivalent convective heat transfer coefficient as the design parameters of the rhombic pin-fin copper heat sink.

[0013] An embodiment of the present invention provides a parameter design method, system, device, and medium for a rhombic pin-fin copper heat sink. Compared with the prior art, its beneficial effects are as follows: A function relationship between the diamond side length, diamond height, diamond attack angle, and flow channel width of the diamond-shaped heat sink fins and the pressure loss is established using a pressure loss model for representing the degree of coolant pressure loss, and a function relationship between the diamond side length, diamond height, diamond attack angle, and flow channel width of the diamond-shaped heat sink fins and the heat dissipation capacity is established using a bottom surface equivalent convective heat transfer coefficient model for representing the heat transfer capacity.

[0014] When the diamond pin-fin copper heat sink is to operate normally, it is necessary to simultaneously satisfy that the pressure loss is not higher than the pressure value delivered by the water pump and the bottom surface equivalent convective heat transfer coefficient is not less than the set heat transfer capacity value, that is, to make the designed diamond pin-fin copper heat sink meet the heat dissipation requirements within the pressure range provided by the liquid-cooling water pump; at this time, the diamond side length, diamond height, diamond attack angle, and flow channel width of the diamond-shaped heat sink fins used under the satisfied conditions are the parameters required for designing the diamond pin-fin copper heat sink. Finally, it avoids wasting time by repeatedly setting the parameters of the diamond pin-fin copper heat sink through simulation experiments to meet the heat dissipation requirements, and can quickly obtain the design parameters of the diamond pin-fin copper heat sink so that the designed diamond pin-fin copper heat sink meets the heat dissipation requirements within the pressure range provided by the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional view of the diamond pin-fin copper heat sink provided by an embodiment of the present invention; Figure 2 It is a partial three-dimensional view of the diamond pin-fin copper heat sink provided by an embodiment of the present invention; Figure 3 It is a planar schematic diagram of the diamond pin-fin copper heat sink provided by an embodiment of the present invention; Figure 4 It is a flowchart of a parameter design method for a diamond pin-fin copper heat sink provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be made in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0017] Parametric studies were conducted on the heat dissipation characteristics of a diamond-shaped pin-fin copper heat sink, and correlation functions were established between the fin height, flow channel width, diamond side length, and attack angle of the heat sink and the heat dissipation performance and pressure loss. The pressure loss and the equivalent bottom surface average convective heat transfer coefficient are two important indicators of the heat dissipation performance of the heat sink. At a certain flow rate, as the fin height increases, the average convective heat transfer coefficient of the radiator becomes lower and lower, and the heat dissipation performance does not increase with the increase of the heat transfer area. Instead, the average bottom surface temperature and the maximum temperature become higher and higher. However, at the same time, as the fin height increases, the pressure drop between the fluid inlet and outlet gradually decreases. Therefore, in actual design, when designing a diamond-shaped pin-fin heat sink according to the present invention, appropriate diamond parameters can be given according to the actual pressure drop and heat dissipation requirements of the heat sink to meet the heat dissipation requirements of the heat source.

[0018] As Figure 4 shown, an embodiment of the present invention provides a parameter design method for a diamond-shaped pin-fin copper heat sink, including the following steps: Step 1: Design a diamond-shaped pin-fin copper heat sink. As Figure 1 shown, in the diamond-shaped pin-fin copper heat sink, flow channels for passing coolant are provided around each diamond-shaped heat dissipation fin in each heat dissipation unit, and the coolant is sent into the flow channels by a water pump, as Figure 2 shown.

[0019] Step 2: Input the diamond side length, diamond height, and diamond attack angle of each diamond-shaped heat dissipation fin in each heat dissipation unit, as well as the flow channel width in each heat dissipation unit, into a pressure loss model for representing the degree of coolant pressure loss to obtain the pressure loss of the diamond-shaped pin-fin copper heat sink. As Figure 3 shown. Among them, the diamond height is the vertical distance from the top of the diamond-shaped heat dissipation fin to the bottom of the flow channel; the diamond attack angle is the angle corresponding to one corner of the diamond-shaped heat dissipation fin that divides the coolant when the coolant flows into each heat dissipation unit; the flow channel width is the distance between two diamond side lengths when the diamond side lengths of two adjacent diamond-shaped heat dissipation fins are parallel to each other.

[0020] Step 3: Input the diamond side length, diamond height, and diamond attack angle of each diamond-shaped heat dissipation fin in each heat dissipation unit, as well as the flow channel width in each heat dissipation unit, into a bottom surface equivalent convective heat transfer coefficient model for representing the heat transfer capacity to obtain the bottom surface equivalent convective heat transfer coefficient of the diamond-shaped pin-fin copper heat sink.

[0021] Step 4: When the pressure loss of the diamond-shaped pin-fin copper heat sink is not higher than the pressure value delivered by the water pump and the bottom surface equivalent convective heat transfer coefficient is not less than the set heat transfer capacity value, the design requirements are met.

[0022] The detailed model introduction is as follows: (1) Pressure loss model P: .

[0023] (2)Bottom Equivalent Convective Heat Transfer Coefficient Model HTC: 。

[0024] Among them, L represents the side length of the rhombus of the rhombic heat sink fin, H represents the height of the rhombus, W represents the channel width, and θ represents the attack angle of the rhombus.

[0025] The pressure loss and heat transfer capacity are calculated. If it is higher than the current water pump pressure or fails to reach the heat transfer capacity, then the current parameters do not meet the requirements, and the parameters need to be modified and retested until better parameters are obtained, and then modeling and prototyping can be carried out.

[0026] The present invention gives the pressure loss and equivalent convective heat transfer coefficient caused by rhombic heat sinks with different parameters under a specific flow rate. Without prototyping and simulation, the pressure loss and heat transfer capacity can be obtained, which is simple and efficient. It saves a large amount of modeling time and prototyping funds and is a powerful tool for design.

[0027] In actual design, there are many parameters of the rhombic heat sink, and they are interrelated and restricted. The present invention can quickly calculate and obtain appropriate parameters to meet the heat dissipation requirements within the pressure range provided by the liquid-cooling water pump.

[0028] An embodiment of the present invention provides a parameter design system for a rhombic pin-fin copper heat sink, including: A rhombic pin-fin copper heat sink design module for designing a rhombic pin-fin copper heat sink. The rhombic heat sink fins of the rhombic pin-fin copper heat sink are provided with channels for passing coolant around; the coolant is sent into the channels through a water pump.

[0029] A pressure loss acquisition module for inputting the side length of the rhombus, the height of the rhombus, the attack angle of the rhombus, and the channel width of the rhombic heat sink fin into a pressure loss model for representing the degree of coolant pressure loss, and obtaining the pressure loss of the rhombic pin-fin copper heat sink.

[0030] A heat transfer capacity acquisition module for inputting the side length of the rhombus, the height of the rhombus, the attack angle of the rhombus, and the channel width of the rhombic heat sink fin into a bottom equivalent convective heat transfer coefficient model for representing the heat transfer capacity, and obtaining the bottom equivalent convective heat transfer coefficient of the rhombic pin-fin copper heat sink.

[0031] A parameter design module for, when the pressure loss of the rhombic pin-fin copper heat sink is not higher than the pressure value delivered by the water pump and the bottom equivalent convective heat transfer coefficient is not less than the set heat transfer capacity value, taking the side length of the rhombus, the height of the rhombus, the attack angle of the rhombus, and the channel width of the rhombic heat sink fin used to obtain the pressure loss and the bottom equivalent convective heat transfer coefficient as the design parameters of the rhombic pin-fin copper heat sink.

[0032] A specific embodiment is as follows: Use the experimental method to verify whether the established pressure loss model and bottom equivalent convective heat transfer coefficient model are successful: (1)Set a numerical range for the flow channel width, rhombus side length, rhombus height, and rhombus attack angle of the rhombic heat dissipation fins in each heat dissipation unit.

[0033] (2)Obtain a set of optimal design parameters for the rhombic heat dissipation fins through the particle swarm optimization algorithm, and design the corresponding rhombic pin-fin copper heat sink. Determine through experiments that the pressure loss of the rhombic pin-fin copper heat sink is not higher than the pressure value delivered by the water pump, and the heat transfer capacity is not less than the set heat transfer capacity value.

[0034] (3)Input the optimal design parameters into the pressure loss model and the bottom surface equivalent convective heat transfer coefficient model to verify whether the results meet the requirements.

[0035] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A parameter design method for a diamond-shaped pin-tooth copper heat sink, characterized in that: The following steps are involved: A diamond pin-tooth copper heat sink is designed, wherein a flow channel for passing a coolant is arranged around the diamond-shaped heat dissipation fins in the diamond pin-tooth copper heat sink; and the coolant is delivered into the flow channel by a water pump; The diamond side length, diamond height, diamond attack angle and flow channel width of the diamond heat dissipation fin are input into a pressure loss model used to represent the degree of coolant pressure loss, and the pressure loss of the diamond pin-tooth copper heat sink is obtained; The rhombus side length, rhombus height, rhombus attack angle and flow channel width of the rhombus heat sink are input into the bottom surface equivalent convection heat transfer coefficient model used to represent the heat transfer capacity, and the bottom surface equivalent convection heat transfer coefficient of the rhombus pin-tooth copper heat sink is obtained; When the pressure loss of the diamond pin-tooth copper heat sink is not higher than the pressure value delivered by the water pump and the equivalent convection heat transfer coefficient of the bottom surface is not less than the set heat exchange capacity value, the diamond side length, diamond height, diamond attack angle and flow channel width of the diamond heat dissipating fins used to obtain the pressure loss and the equivalent convection heat transfer coefficient of the bottom surface are used as design parameters of the diamond pin-tooth copper heat sink.

2. A parameter design method for a diamond pin-tooth copper heat sink as claimed in claim 1, characterized in that: The pressure loss model P is formulated as follows: Wherein, L represents the side length of the rhombus of the rhombus heat sink fin, H represents the height of the rhombus, W represents the flow channel width, and θ represents the rhombus attack angle.

3. The parameter design method of a diamond pin-tooth copper heat sink according to claim 1, characterized in that: The bottom surface equivalent convection heat transfer coefficient model HTC is formulated as follows: Wherein, L represents the side length of the rhombus of the rhombus heat sink fin, H represents the height of the rhombus, W represents the flow channel width, and θ represents the rhombus attack angle.

4. The parameter design method of a diamond pin-tooth copper heat sink according to claim 1, characterized in that: The diamond height is the vertical distance from the top of the diamond-shaped heat dissipating fin to the bottom of the flow channel.

5. The parameter design method of a diamond pin-tooth copper heat sink according to claim 1, characterized in that: The diamond attack angle is the angle corresponding to a corner of the diamond heat dissipating fin that diverts the coolant when the coolant flows into each heat dissipating unit.

6. The parameter design method of a diamond pin-tooth copper heat sink according to claim 1, characterized in that: The flow channel width is the distance between the two rhombus sides of two adjacent rhombus-shaped heat dissipating fins when the two rhombus sides are parallel to each other.

7. A parameter design system for a diamond-shaped pin-tooth copper heat sink, characterized in that: include: A diamond pin-tooth copper heat sink design module is used to design a diamond pin-tooth copper heat sink, wherein the diamond pin-tooth copper heat sink has a flow channel for passing a coolant around the diamond-shaped heat dissipation fins; the coolant is fed into the flow channel by a water pump; A pressure loss acquisition module, used for inputting the rhombus side length, rhombus height, rhombus attack angle and flow channel width of the rhombus heat dissipation fin into a pressure loss model for representing the degree of coolant pressure loss, and obtaining the pressure loss of the rhombus pin-tooth copper heat sink; A heat transfer capacity acquisition module is used to input the rhombus side length, rhombus height, rhombus attack angle and flow channel width of the rhombus heat dissipation fin into a bottom surface equivalent convection heat transfer coefficient model used to represent the heat transfer capacity, and obtain the bottom surface equivalent convection heat transfer coefficient of the rhombus pin-tooth copper heat sink; A parameter design module is used to obtain the rhombus side length, rhombus height, rhombus attack angle and flow channel width of the rhombus heat sink used for the pressure loss and the equivalent convection heat transfer coefficient of the bottom surface when the pressure loss of the rhombus pin-tooth copper heat sink is not higher than the pressure value delivered by the water pump and the equivalent convection heat transfer coefficient of the bottom surface is not less than the set heat exchange capacity value as the design parameters of the rhombus pin-tooth copper heat sink.

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