Double-layer heat dissipation plate

Abstract

The utility model provides a double-layer heat dissipation plate, and relates to the technical field of liquid cooling plates, the double-layer heat dissipation plate comprises two water cooling plates, the two water cooling plates are connected through a plurality of fixing columns, a heat dissipation interval is formed between the two water cooling plates, a plurality of miniature electric fans are arranged in the heat dissipation interval, and flow channels are respectively arranged in the two water cooling plates. A plurality of rotating devices are arranged in one flow channel and connected with a plurality of miniature electric fans through a plurality of connecting pieces, cooling water is injected into the flow channels, cooling water flow impacts the single plates and pushes the single plates to move when flowing, rubber sleeves on the single plates are attached to the inner walls of the flow channels, the cooling water is prevented from penetrating through gaps, and therefore the cooling water flow is prevented from flowing into the flow channels. The single plate can push the rotating column to rotate through the connecting rod, the rotating column rotates to drive the connecting piece to rotate, and therefore the miniature electric fan at the other end of the connecting piece does annular motion, through the structure, the rotating column can rotate more stably, and the heat dissipation effect of the miniature electric fan is improved to a certain degree.

Description

Technical Field

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

[0002] Existing cooling methods for electronic devices mainly include: natural air convection and radiation, air-cooled plates (forced air cooling with heat sinks), liquid cooling (forced indirect liquid cooling with water-cooled plates), and evaporative cooling (heat pipe phase change cooling). Among these, evaporative cooling and liquid cooling have the highest heat dissipation efficiency. However, evaporative cooling is limited in applications due to size and cost constraints. In contrast, water-cooled plate cooling is widely used in applications with high heat flux density due to its high heat dissipation efficiency, small heat sink size, and compact heat dissipation system structure.

[0003] Application number CN202323572013.X discloses a double-layer water-cooled heat sink, including a main heat sink module and an auxiliary heat sink module. The main heat sink module includes two water-cooled plates, connectors connected to and communicating with the water-cooled plates, water flow channels and heat dissipation channels opened inside the water-cooled plates, a metal frame and a return water pipe connected between the two water-cooled plates, and the two heat dissipation channels are interconnected through the return water pipe. The auxiliary heat sink module includes multiple cranks movably connected to the water-cooled plates near the bottom of the metal frame, a turbine sleeved at the bottom of the cranks, and a miniature electric fan sleeved at the top of the cranks. The turbine is located inside the heat dissipation channels. In this invention, when the coolant circulates, the coolant affects the rotation of the turbine, and then the cranks follow the movement, causing the miniature electric fan to rotate in a ring. During this process, the miniature electric fan accelerates the airflow speed within the heat dissipation gap, effectively improving the heat dissipation efficiency of the water-cooled plate.

[0004] However, in the above structure, when the coolant flows and impacts the turbine, some of the coolant will directly pass through the gap between the inner wall of the flow channel and the turbine, which reduces the turbine's rotation efficiency or even stops it from rotating, resulting in a decrease in the cooling effect of the miniature electric fan.

[0005] Therefore, it is necessary to provide a new double-layer heat sink to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a double-layer heat dissipation plate.

[0007] The present invention provides a double-layer heat dissipation plate including two water-cooled plates, which are connected by multiple fixed columns and a heat dissipation gap is formed between the two water-cooled plates. Multiple micro electric fans are provided in the heat dissipation gap. Flow channels are opened in the two water-cooled plates respectively. Multiple rotating devices are provided in one of the flow channels. The multiple rotating devices are connected to the multiple micro electric fans through multiple connectors.

[0008] The rotating device includes a rotating column, and an installation part is provided in the flow channel. The bottom and top of the inner wall of the installation part are respectively provided with fixed seats. A limiting groove is provided at the center of the opposite side of the two fixed seats. The two ends of the rotating column are respectively located in the two limiting grooves and can rotate in the limiting grooves. Multiple connecting rods are fixedly provided on the surface of the rotating column. Multiple single plates are fixedly provided at the ends of the multiple connecting rods away from the rotating column. The single plates are arc-shaped. A rubber sleeve is fixedly sleeved on the side surface of the single plate. The outer edge of the rubber sleeve is in contact with the inner wall of the flow channel.

[0009] Preferably, each of the two water-cooled plates has a water inlet pipe fixedly installed on one side. The inner cavities of the two water inlet pipes are respectively connected to the inner cavities of the flow channels provided in the two water-cooled plates. The ends of the two flow channels away from the water inlet pipes are connected by a connecting pipe. A water outlet pipe is fixedly installed on the surface of the connecting pipe. The inner cavity of the water outlet pipe is connected to the inner cavity of the connecting pipe. The inner diameters of both the water outlet pipe and the connecting pipe are larger than the inner diameter of the water inlet pipe.

[0010] Preferably, the flow channel is provided with a plurality of protrusions, and the protrusions are inclined on the side near the water inlet pipe.

[0011] Preferably, the surface of the water-cooled plate has multiple through holes.

[0012] Preferably, the connecting component is a crank, one end of which is fixedly connected to the bottom of the miniature electric fan, and the end of the crank away from the miniature electric fan passes through one side of the water-cooled plate and is fixedly connected to one end of the rotating column.

[0013] Compared with related technologies, the double-layer heat dissipation plate provided by this utility model has the following beneficial effects:

[0014] By injecting cooling water into the flow channel, the water flow within the channel, which houses the single-plate, impacts the concave surface of the arc-shaped single-plate, propelling it to move. The rubber sleeve on the single-plate fits snugly against the inner wall of the flow channel, preventing cooling water from passing through gaps. The single-plate then drives the rotating column to rotate via a connecting rod. The rotation of the rotating column causes the connecting component to rotate, resulting in a circular motion of the miniature electric fan at the other end of the connecting component. This structure makes the rotation of the rotating column more stable and improves the heat dissipation effect of the miniature electric fan to a certain extent. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a double-layer heat dissipation plate provided by this utility model;

[0016] Figure 2 A schematic diagram showing the disassembled structure of a double-layer heat dissipation plate provided by this utility model;

[0017] Figure 3 A cross-sectional view of a double-layer heat sink provided by this utility model. Figure 1 ;

[0018] Figure 4 A cross-sectional view of a double-layer heat sink provided by this utility model. Figure 2 ;

[0019] Figure 5 for Figure 3 The diagram shows the overall structure of the rotating device.

[0020] The following are the labels in the diagram: 1. Water-cooled plate; 2. Miniature electric fan; 3. Flow channel; 4. Rotating column; 5. Fixing base; 6. Connecting rod; 7. Single plate; 8. Rubber sleeve; 9. Water inlet pipe; 10. Connecting pipe; 11. Water outlet pipe; 12. Protrusion; 13. Through hole; 14. Crank; 15. Fixing column. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figures 1-5 ,in Figure 1 A schematic diagram of the overall structure of a double-layer heat dissipation plate provided by this utility model; Figure 2 A schematic diagram showing the disassembled structure of a double-layer heat dissipation plate provided by this utility model; Figure 3 A cross-sectional view of a double-layer heat sink provided by this utility model. Figure 1 ; Figure 4 A cross-sectional view of a double-layer heat sink provided by this utility model. Figure 2 ; Figure 5 for Figure 3 The diagram shows the overall structure of the rotating device.

[0023] In the specific implementation process, such as Figures 1-5 As shown, a double-layer heat dissipation plate includes two water-cooled plates 1, which are connected by multiple fixed columns 15. A heat dissipation gap is formed between the two water-cooled plates 1, and multiple miniature electric fans 2 are provided in the heat dissipation gap. A flow channel 3 is opened in each of the two water-cooled plates 1, and multiple rotating devices are provided in one of the flow channels 3. The multiple rotating devices are connected to the multiple miniature electric fans 2 through multiple connectors.

[0024] The rotating device includes a rotating column 4, an installation part is provided inside the flow channel 3, and a fixing seat 5 is provided at the bottom and top of the inner wall of the installation part. A limiting groove is provided at the center of the opposite side of the two fixing seats 5. The two ends of the rotating column 4 are located in the two limiting grooves and can rotate within the limiting grooves. Multiple connecting rods 6 are fixedly provided on the surface of the rotating column 4. Multiple single plates 7 are fixedly provided at the ends of the multiple connecting rods 6 away from the rotating column 4. The single plates 7 are arc-shaped. A rubber sleeve 8 is fixedly fitted on the side surface of the single plate 7. The outer edge of the rubber sleeve 8 is in contact with the inner wall of the flow channel 3. When cooling water is injected into the flow channel 3, the water flow in the flow channel 3 where the single plates 7 are installed will impact the concave surface of the arc-shaped single plate 7, pushing the single plate 7 to move. The rubber sleeve 8 on the single plate 7 is in contact with the inner wall of the flow channel 3 to prevent the cooling water from passing through the gaps. The single plate 7 will push the rotating column 4 to rotate through the connecting rods 6. The rotation of the rotating column 4 will drive the connecting part to rotate, thereby causing the miniature electric fan 2 at the other end of the connecting part to make a circular motion.

[0025] Two water-cooled plates 1 are respectively fixed with water inlet pipes 9 on one side. The inner cavities of the two water inlet pipes 9 are respectively connected to the inner cavities of the flow channels 3 set in the two water-cooled plates 1. The ends of the two flow channels 3 away from the water inlet pipes 9 are connected by a connecting pipe 10. A water outlet pipe 11 is fixed on the surface of the connecting pipe 10. The inner cavity of the water outlet pipe 11 is connected to the inner cavity of the connecting pipe 10. The inner diameters of the water outlet pipe 11 and the connecting pipe 10 are larger than the inner diameters of the water inlet pipes 9, so that the cooling water in the two flow channels 3 can flow into the water inlet pipes 9 at the same time, avoiding obstruction of the cooling water flow.

[0026] The flow channel 3 is provided with multiple protrusions 12. The protrusions 12 are inclined on the side near the water inlet pipe 9. The protrusions 12 can make the inner diameter of the flow channel 3 shrink sharply, which accelerates the cooling water when it passes through the flow channel 3 with a reduced inner diameter. This increases the force of the cooling water hitting the single plate 7 and increases the moving speed of the single plate 7.

[0027] The surface of the water-cooled plate 1 has multiple through holes 13 to facilitate heat dissipation within the heat dissipation gap.

[0028] The connecting component is a crank 14. One end of the crank 14 is fixedly connected to the bottom of the miniature electric fan 2, and the end of the crank 14 away from the miniature electric fan 2 passes through one side of the water-cooled plate 1 and is fixedly connected to one end of the rotating column 4.

[0029] The working principle of this utility model is as follows: When in use, cooling water is injected into the two inlets respectively. When the water flows in the flow channel 3 where the single plate 7 is installed, it will impact the concave surface of the arc-shaped single plate 7, pushing the single plate 7 to move. The single plate 7 will push the rotating column 4 to rotate through the connecting rod 6. The rotation of the rotating column 4 will drive the crank 14 to rotate, thereby causing the miniature electric fan 2 at the other end of the crank 14 to make a circular motion. At the same time, the flowing water will flow to the connecting pipe 10 and flow into the connecting pipe 10, and then flow out through the water outlet 11 connected to the connecting pipe 10.

[0030] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0031] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A double-layer heat dissipation plate, characterized in that, It includes two water-cooled plates (1), which are connected by multiple fixed columns (15). A heat dissipation gap is formed between the two water-cooled plates (1), and multiple miniature electric fans (2) are provided in the heat dissipation gap. A flow channel (3) is opened in each of the two water-cooled plates (1), and multiple rotating devices are provided in one of the flow channels (3). The multiple rotating devices are connected to the multiple miniature electric fans (2) through multiple connectors. The rotating device includes a rotating column (4), an installation part is provided in the flow channel (3), and a fixed seat (5) is provided at the bottom and top of the inner wall of the installation part. A limiting groove is provided at the center of the opposite side of the two fixed seats (5). The two ends of the rotating column (4) are located in the two limiting grooves and can rotate in the limiting grooves. A plurality of connecting rods (6) are fixedly provided on the surface of the rotating column (4). A plurality of single plates (7) are fixedly provided at the ends of the plurality of connecting rods (6) away from the rotating column (4). The single plates (7) are arranged in an arc shape. A rubber sleeve (8) is fixedly sleeved on the side surface of the single plate (7). The outer edge of the rubber sleeve (8) is in contact with the inner wall of the flow channel (3).

2. The double-layer heat dissipation plate according to claim 1, characterized in that, Two water-cooled plates (1) are respectively fixed with water inlet pipes (9) on one side. The inner cavities of the two water inlet pipes (9) are respectively connected to the inner cavities of the flow channels (3) provided in the two water-cooled plates (1). The ends of the two flow channels (3) away from the water inlet pipes (9) are connected through connecting pipes (10). A water outlet pipe (11) is fixed on the surface of the connecting pipe (10). The inner cavity of the water outlet pipe (11) is connected to the inner cavity of the connecting pipe (10). The inner diameters of the water outlet pipe (11) and the connecting pipe (10) are both larger than the inner diameter of the water inlet pipe (9).

3. A double-layer heat dissipation plate according to claim 2, characterized in that, The flow channel (3) is provided with a plurality of protrusions (12), and the protrusions (12) are inclined on the side near the water inlet pipe (9).

4. A double-layer heat dissipation plate according to claim 3, characterized in that, The surface of the water-cooled plate (1) has multiple through holes (13).

5. A double-layer heat dissipation plate according to claim 4, characterized in that, The connecting component is a crank (14), one end of which is fixedly connected to the bottom of the miniature electric fan (2), and the end of the crank (14) away from the miniature electric fan (2) passes through one side of the water-cooled plate (1) and is fixedly connected to one end of the rotating column (4).

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