Low-flow-resistance air nitrogen expansion plate heat sink

Abstract

The utility model relates to the technical field of heat sinks, in particular to a low-flow-resistance nitrogen expansion plate heat sink, which comprises a cylinder body, two groups of liquid inlet assemblies and two groups of liquid collecting assemblies, the liquid inlet assembly comprises a liquid inlet pipe, two shunt pipes and a three-way pipe; the two flow dividing pipes are located on the same axial side of the barrel in parallel and communicate with the two expansion plates located on the same side correspondingly. The two flow dividing pipes are communicated with the liquid inlet pipe through a three-way pipe, and the airflow direction in the flow dividing pipe far away from the liquid inlet pipe is consistent with the airflow direction in the liquid inlet pipe; a rectification section is arranged in the three-way pipe; the liquid collecting assembly comprises a liquid outlet pipe and two collecting pipes, and the two collecting pipes are located on the same side of the axial direction of the cylinder body in parallel and communicate with the two expansion plates located on the same side correspondingly; according to the utility model, the uniformity of temperature distribution in the heat sink can be ensured, the local overheating or supercooling phenomenon can be effectively avoided, and the stability and reliability of the whole thermal control system can be improved.

Description

Technical Field

[0001] This utility model relates to the field of heat sink technology, specifically to a low-flow-resistance gas nitrogen expansion plate heat sink. Background Technology

[0002] Currently, heat sinks, as a key temperature control component, play a vital role in many high-tech industries, especially in electronic equipment, semiconductor manufacturing, laser technology, and aerospace. However, in traditional heat sink applications, when using gas as the heat exchange medium, poor temperature uniformity is often encountered. The direct cause of this poor temperature uniformity is the excessive length of the pipeline responsible for transporting the medium. As the medium flows through the pipeline, friction occurs against the pipe wall, generating resistance and resulting in pressure loss, or friction loss. This friction loss reduces the flow rate of the medium at the end of the pipeline, ultimately leading to poor temperature uniformity and affecting the performance and stability of the equipment. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a low flow resistance gas nitrogen expansion plate heat sink, which can ensure the uniformity of temperature distribution inside the heat sink, effectively avoid local overheating or overcooling, and improve the stability and reliability of the entire thermal control system.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a low-flow-resistance gas nitrogen expansion plate heat sink, comprising a cylinder body, the cylinder body being composed of two single cylinders, each single cylinder including two expansion plates arranged vertically, the heat sink further including two sets of liquid inlet components and liquid collection components; the liquid inlet component includes a liquid inlet pipe, two diverter pipes, and a three-way pipe; the two diverter pipes are connected in parallel on the same side of the cylinder body's axial direction and are respectively connected to the two expansion plates located on the same side; the two diverter pipes are connected to the liquid inlet pipe through the three-way pipe, wherein the airflow direction in the diverter pipe away from the liquid inlet pipe is consistent with the airflow direction in the liquid inlet pipe; the three-way pipe is provided with a flow straightening section; the liquid collection component includes a liquid outlet pipe and two manifold pipes, the two manifold pipes are connected in parallel on the same side of the cylinder body's axial direction and are respectively connected to the two expansion plates located on the same side; the two manifold pipes are connected to the liquid outlet pipe.

[0005] Preferably, the rectifier section is located close to the diverter pipe away from the inlet pipe.

[0006] Preferably, the rectifying section includes a tapering section, a connecting section, and a widening section arranged sequentially along the flow direction of the gaseous nitrogen.

[0007] Preferably, the multiple manifolds are connected in parallel.

[0008] Preferably, the diverter is located at the lower end of the expansion plate, and the manifold is located at the upper end of the expansion plate.

[0009] Preferably, each end of the expansion plate is provided with multiple interfaces; the diverter pipe and the manifold pipe are connected to the expansion plate through the interfaces.

[0010] Preferably, the two sets of liquid inlet components are arranged symmetrically along the axis of the cylinder.

[0011] Preferably, the inlet of the liquid inlet pipe and the outlet of the liquid outlet pipe are located on the same side of the cylinder.

[0012] Preferably, the length direction of the inlet pipe and the diversion pipe is the same.

[0013] Preferably, the cylinder has several through holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By shortening the length of the conveying pipe directly connected to the expansion plate through the parallel-connected diverter pipes, the travel distance of the gas nitrogen in the conveying pipe is shortened, reducing the problem of gradual pressure reduction of gas in the inlet and outlet pipes of the heat sink, ensuring sufficient gas flow in each inlet hole, and improving the gas circulation efficiency; the parallel-connected diverter pipes are connected to the liquid inlet pipe through a T-connector with rectification function, reducing the deflection or reversal of the flow direction of the gas nitrogen before entering the expansion plate, making the flow distribution in the diverter pipe more balanced, thus ensuring the uniformity of the internal temperature distribution of the heat sink, effectively avoiding local overheating or overcooling, thereby improving the stability and reliability of the entire thermal control system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the heat sink axis of this utility model;

[0016] Figure 2 For the present utility model Figure 1 A schematic diagram at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the unfolded cylindrical structure of this utility model;

[0018] Figure 4 This is a lower side view of the heat sink of this utility model;

[0019] Figure 5 This is a schematic diagram of the cross-section of the tee pipe of this utility model;

[0020] Figure 6 This is a view of the top side of the heat sink of this utility model;

[0021] Figure 7 This is a schematic diagram showing the flow direction of gaseous nitrogen inside the heat sink according to this invention.

[0022] In the diagram: 1. Cylinder body, 2. Inlet assembly, 3. Manifold assembly, 4. Branch pipe, 5. Fastener, 11. Expansion plate, 21. Inlet pipe, 22. Diverter pipe, 23. Tee pipe, 231. Inlet section, 232. First outlet section, 233. Second outlet section, 2331. Gradient section, 2332. Connecting section, 2333. Expanding section, 31. Manifold, 32. Outlet pipe. Detailed Implementation

[0023] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0024] See Figure 1-7 In one embodiment of this utility model, a low-flow-resistance gas nitrogen expansion plate heat sink includes: a cylinder 1, a liquid inlet assembly 2, a liquid collection assembly 3, and several branch pipes 4 and several fasteners 5. The cylinder 1 is fixedly installed in a vacuum container by the fasteners 5. The cylinder 1 is formed by rolling an expansion plate 11. The liquid inlet assembly 2 and the liquid collection assembly 3 are both connected to the internal cavity of the expansion plate 11 through the branch pipes 4, so that the heat exchange medium gas nitrogen can enter the cylinder 1 evenly through the liquid inlet assembly 2 and flow in the same direction. The gas nitrogen can be concentrated more quickly through the liquid collection assembly 3. This can ensure the uniformity of the internal temperature distribution of the heat sink, effectively avoid local overheating or overcooling, and improve the stability and reliability of the entire thermal control system.

[0025] Specifically, the cylinder 1 is a cylindrical structure formed by bending two heat exchange plates after sealing and welding them around its perimeter. The two heat exchange plates are connected in the middle by several evenly distributed weld points. Under the heating effect of welding, the two heat exchange plates undergo thermal expansion, forming several interconnected bulges between them. Finally, a cross-shaped weld bead is arranged in the middle of the two heat exchange plates, forming four expansion plates 11 of equal area on the cylinder 1. The cylinder 1 is placed horizontally, and the four independent heat sink expansion plates 11 are arranged vertically. It can also be understood that two expansion plates 11 can be enclosed to form a single cylinder. The cylinder 1 is composed of two single cylinders arranged axially.

[0026] It should be noted that the cylinder 1 has several through holes and interfaces. The function of the through holes is not limited to fixing the heat sink, providing fixing points for lighting lamps, or providing lifting points. In addition, the through holes do not damage the sealing structure after the two heat exchange plates are welded. The interfaces are used to connect with the branch pipe 4 by welding.

[0027] The liquid inlet assembly 2 is provided in two sets, with the two sets of liquid inlet assemblies 2 positioned correspondingly, and each set of liquid inlet assembly 2 is connected to two expansion plates 11. It can be understood that the two sets of liquid inlet assemblies 2 can simultaneously deliver an equal amount of heat exchange medium into the four expansion plates 11. To solve the problem of temperature uniformity, the liquid inlet assembly 2 is located at the lower end of the cylinder 1. The liquid inlet assembly 2 includes a liquid inlet pipe 21, a diversion pipe 22, and a three-way pipe 23. There are two diversion pipes 22, and the two diversion pipes 22 are arranged in the front-to-back direction at the lower end of the cylinder 1. The two diversion pipes 22 are connected in parallel and are both connected to the liquid inlet pipe 21 through the three-way pipe 23. The length direction of the liquid inlet pipe 21 and the diversion pipe 22 is the same.

[0028] Two sets of liquid inlet components 2 are symmetrically arranged along the axial direction of the cylinder 1. That is to say, four diversion pipes 22 are arranged in correspondence with four expansion plates 11. The diversion pipes 22 can independently deliver heat exchange medium to the expansion plates 11 at the corresponding positions.

[0029] The three-way pipe 23 consists of an inlet section 231, a first outlet section 232, and a second outlet section 233. The inlet section 231 and the second outlet section 233 are coaxial, and the axis of the inlet section 231 is perpendicular to the axis of the first outlet section 232. Furthermore, the second outlet section 233 contains a rectifying section, which includes a tapering section 2331, a connecting section 2332, and a expanding section 2333 arranged sequentially along the flow direction of the gas and nitrogen. The tapering section 2331, by reducing the pipe cross-sectional area, increases the medium velocity and also increases the pressure at the connection between the first outlet section 232 and the second outlet section 233, making the gas and nitrogen flow distribution within the first outlet section 232 and the second outlet section 233 more balanced. Additionally... The connecting section 2332 is used to stabilize the flow of the medium and avoid turbulence or eddies caused by changes in cross-section. The gradually expanding section 2333 increases the cross-sectional area of ​​the pipe, thereby reducing the flow velocity of the medium and stabilizing the flow velocity of the gaseous nitrogen. After installation, the inlet section 231 is connected to the liquid inlet pipe 21, and the first outlet section 232 and the second outlet section 233 are each connected to a branch pipe 22. When the fluid passes through the bend, the flow direction changes suddenly, causing the fluid to separate from the pipe wall, forming eddies and turbulence, which consumes energy. In particular, the resistance is the greatest and the flow loss is the most obvious at the 90° bend. Therefore, the setting of the three-way pipe 23 in this embodiment reduces the flow loss by reducing the number of bends, making the flow distribution of the first outlet section 232 and the second outlet section 233 more balanced.

[0030] The liquid collection assembly 3 is provided in two sets, both of which are located at the upper end of the cylinder 1 and are symmetrically arranged along the axial direction of the cylinder 1. The liquid collection assembly 3 includes an outlet pipe 32 and two manifolds 31, which are arranged in parallel. Both manifolds 31 are connected to the outlet pipe 32. The four manifolds 31 are respectively arranged to correspond to the four expansion plates 11. That is, each expansion plate 11 is provided with a diverter pipe 22 and a manifold 31. Gas nitrogen can flow unidirectionally in the diverter pipe 22, the expansion plate 11 and the manifold 31 in sequence. The manifold 31 and the diverter pipe 22 are both connected to the branch pipe 4. The multi-channel design allows for more uniform gas nitrogen flow.

[0031] This technical solution shortens the length of the delivery pipeline directly connected to the expansion plate by using parallel-connected diverter pipes. This reduces the travel distance of the gas nitrogen in the delivery pipeline, minimizing the problem of gradually decreasing gas pressure in the inlet and outlet pipelines of the heat sink. It ensures sufficient gas flow in each inlet and improves the gas circulation efficiency. The parallel-connected diverter pipes are connected to the liquid inlet pipe through a T-junction with rectification function, reducing the deflection or reversal of the gas nitrogen in the flow direction before entering the expansion plate. This makes the flow distribution in the diverter pipes more balanced, ensuring the uniformity of the internal temperature distribution of the heat sink and effectively avoiding local overheating or overcooling, thereby improving the stability and reliability of the entire thermal control system.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A low-resistance gas nitrogen expansion plate heat sink, comprising a cylinder (1), the cylinder (1) being composed of two single cylinders, each single cylinder comprising two expansion plates (11) arranged vertically, characterized in that: The heat sink also includes two sets of inlet components (2) and two sets of manifold components (3); the inlet component (2) includes an inlet pipe (21), two branch pipes (22), and a three-way pipe (23); the two branch pipes (22) are located in parallel on the same side of the cylinder (1) axial direction and are respectively connected to two expansion plates (11) located on the same side; the two branch pipes (22) are connected to the inlet pipe (21) through the three-way pipe (23), wherein the airflow direction in the branch pipe (22) away from the inlet pipe (21) is consistent with the airflow direction in the inlet pipe (21); the three-way pipe (23) is provided with a straightening section; the manifold component (3) includes an outlet pipe (32) and two manifolds (31), the two manifolds (31) are located in parallel on the same side of the cylinder (1) axial direction and are respectively connected to two expansion plates (11) located on the same side; the two manifolds (31) are connected to the outlet pipe (32).

2. The low flow resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The rectifier section is located close to the branch pipe (22) away from the inlet pipe (21).

3. The low flow resistance gas nitrogen expansion plate heat sink according to claim 2, characterized in that: The rectifying section includes a tapering section, a connecting section, and a expanding section arranged sequentially along the flow direction of the gas nitrogen.

4. A low-flow-resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The multiple manifolds (31) are connected in parallel.

5. A low-flow-resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The diverter pipe (22) is located at the lower end of the expansion plate (11), and the manifold pipe (31) is located at the upper end of the expansion plate (11).

6. A low-flow-resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The expansion plate (11) has multiple interfaces at both ends; the shunt pipe (22) and the manifold pipe (31) are connected to the expansion plate (11) through the interfaces.

7. A low-flow-resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The two sets of liquid inlet components (2) are arranged symmetrically along the axis of the cylinder (1).

8. A low-flow-resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The inlet of the liquid inlet pipe (21) and the outlet of the liquid outlet pipe (32) are located on the same side of the cylinder (1).

9. A low-flow-resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The length direction of the inlet pipe (21) and the diversion pipe (22) is the same.

10. A low-flow-resistance gas nitrogen expansion plate heat sink according to claim 1, characterized in that: The cylinder (1) has several through holes.

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