Bionic fractal plate heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers and discloses a bionic fractal plate heat exchanger which comprises a base plate, a flow guide groove and flow dividing holes, the flow guide groove is formed in the outer side of the interior of the base plate, the flow dividing holes communicated with the interior of the base plate are formed in the surface of the inner wall of one side of the flow guide groove, and the flow dividing holes surround the flow guide groove by a circle. A cover plate is fixedly installed at the top of the base plate, a liquid outlet pipe is arranged in the center of the top of the cover plate and communicates with the center of the interior of the base plate, a flow guide groove is formed in the periphery of the interior of the base plate, and a plurality of flow dividing holes are formed in the surface of the flow guide groove, so that synchronism of fluid entering and exiting the interior of the base plate is guaranteed; the conditions that after fluid enters the base plate, the lengths of paths are different, fluid inlet and outlet are not synchronous, heat is accumulated at one position, and heat exchange is not uniform are avoided, and the uniformity of heat exchange is effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically relating to a biomimetic fractal plate heat exchanger. Background Technology

[0002] In the field of electronic heat dissipation, heat exchangers are the main equipment for cooling electronic chips. With the improvement of chip manufacturing processes, chip integration is becoming higher and higher, and the power per unit volume is becoming larger, which also increases the demand for chip heat dissipation. Due to the intricate internal design of chips, any localized overheating area will significantly reduce the chip's lifespan. This requires heat exchangers not only to have strong heat transfer capacity under the same pressure drop, but also to dissipate heat as evenly as possible.

[0003] According to the biomimetic fractal plate heat exchanger disclosed in patent number CN201920269739.0, fractal unit channels are formed on the substrate. Several fractal unit channels are evenly distributed in a circular array about the center of the substrate. The outlet ends of several fractal unit channels are connected to the liquid collection ring groove. The fluid enters from the fluid inlet, passes through the fractal unit channels, enters the liquid collection ring groove, and finally flows out from the fluid outlet. Several fractal unit channels cover the entire substrate, and the fluid can flow in all directions in the heat exchanger. While flowing, it carries away the heat in the heat exchanger, thereby achieving uniform heat exchange in the heat exchanger, avoiding local high temperature, and extending the service life of electronic chips. Acute angles are used as bifurcation angles in the fractal unit channels. The flow resistance encountered by the fluid when turning at acute angles is small, reducing the flow resistance of the fluid in the channel. Moreover, the bifurcation pipes cover the entire substrate, and the numerous bifurcation pipes improve the heat exchange efficiency of this utility model heat exchanger.

[0004] The above solution has certain technical defects during use. Since the fluid inlet is located at the center of the cover plate and the fluid outlet is located on one side of the base plate, the fluid will disperse in all directions after entering from the inlet. The fluid near the fluid outlet will be discharged quickly after passing through the graded branch pipes and the liquid collection ring groove, which has a shorter path. However, the fluid spreading away from the fluid outlet will pass through a long liquid collection ring groove after passing through the graded branch pipes, which means that the fluids entering at the same time cannot be discharged at the same time. This results in uneven heat exchange in the equipment, which can easily cause heat accumulation and is not conducive to uniform heat exchange. To address this, we propose a biomimetic fractal plate heat exchanger. Utility Model Content

[0005] The purpose of this invention is to provide a biomimetic fractal plate heat exchanger to solve the existing problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biomimetic fractal plate heat exchanger, comprising a substrate, a flow guide groove, and flow distribution holes. The flow guide groove is formed on the inner and outer sides of the substrate. A plurality of flow distribution holes communicating with the interior of the substrate are formed on the inner wall surface of one side of the flow guide groove. The flow distribution holes are arranged around the flow guide groove. A cover plate is fixedly installed on the top of the substrate. A liquid outlet pipe is provided at the center of the top of the cover plate and communicates with the center of the interior of the substrate.

[0007] Preferably, the interior of the substrate is provided with a first rhombus block surrounding the inner wall of the substrate, a second rhombus block is provided on one side between two adjacent first rhombus blocks, a third rhombus block is provided on one side between two adjacent second rhombus blocks, a fourth rhombus block is provided on one side between two adjacent third rhombus blocks, and a fifth rhombus block is provided on one side between two adjacent fourth rhombus blocks.

[0008] Preferably, a diversion pipe is provided around the outer perimeter of the substrate, one end of the diversion pipe extends into the flow guide groove inside the substrate and is sealed and connected to the interior of the substrate, and a diversion hole is opened on one side of the inner wall of the flow guide groove corresponding to the position of the diversion pipe.

[0009] Preferably, one end of the plurality of diversion pipes away from the interior of the guide groove is sealed and connected to one end of the same liquid inlet pipe, and the liquid inlet pipe is located at the center of the side of the substrate away from the cover plate.

[0010] Preferably, a flow divider is provided between the first rhombus block and the second rhombus block, the second rhombus block and the third rhombus block, the third rhombus block and the fourth rhombus block, and the fourth rhombus block and the fifth rhombus block, and the flow divider converges towards the center of the substrate.

[0011] Preferably, the tops and bottoms of the first, second, third, fourth, and fifth rhombus blocks are fixed and sealed to the inner bottom surface of the substrate and the inner wall of the cover plate, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By opening a flow guide groove on the inner periphery of the substrate and opening several flow diversion holes on the surface of the flow guide groove, the synchronicity of the fluid entering and exiting the substrate is ensured. This avoids the situation where the fluid enters and exits the substrate with different path lengths, resulting in asynchronous fluid entry and exit, causing heat to accumulate in one place and uneven heat exchange, thus effectively ensuring the uniformity of heat exchange.

[0014] 2. By setting up distribution pipes around the substrate and connecting multiple distribution pipes to the same inlet pipe, the fluid can be ensured to enter from all sides of the guide channel, thereby ensuring uniform flow of the fluid inside the guide channel and avoiding asynchronous liquid output from the distribution holes near the distribution pipes and other distribution holes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the liquid inlet pipe structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the substrate of this utility model.

[0018] In the diagram: 1. Substrate; 2. Inlet pipe; 3. Diverter pipe; 4. Guide channel; 5. Diverter hole; 6. First rhombus block; 7. Second rhombus block; 8. Third rhombus block; 9. Fourth rhombus block; 10. Fifth rhombus block; 11. Cover plate; 12. Outlet pipe; 13. Diverter channel. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3 This utility model provides a biomimetic fractal plate heat exchanger technical solution: including a substrate 1, a flow guide 4 and flow diversion holes 5. The flow guide 4 is provided on the inner and outer sides of the substrate 1. Several flow diversion holes 5 communicating with the interior of the substrate 1 are provided on the inner wall surface of one side of the flow guide 4. The flow diversion holes 5 are arranged around the flow guide 4. A cover plate 11 is fixedly installed on the top of the substrate 1. A liquid outlet pipe 12 is provided at the center of the top of the cover plate 11. The liquid outlet pipe 12 communicates with the center of the interior of the substrate 1.

[0021] Specifically, a first rhombus block 6 is arranged around the inner wall of the substrate 1, a second rhombus block 7 is arranged on one side between two adjacent first rhombus blocks 6, a third rhombus block 8 is arranged on one side between two adjacent second rhombus blocks 7, a fourth rhombus block 9 is arranged on one side between two adjacent third rhombus blocks 8, and a fifth rhombus block 10 is arranged on one side between two adjacent fourth rhombus blocks 9.

[0022] Specifically, a diversion pipe 3 is provided around the outer perimeter of the substrate 1. One end of the diversion pipe 3 extends into the flow guide groove 4 inside the substrate 1 and is sealed and connected to its interior. A diversion hole 5 is opened on one side of the inner wall of the flow guide groove 4 at a position corresponding to the diversion pipe 3.

[0023] Specifically, one end of multiple diversion pipes 3 away from the interior of the guide groove 4 is sealed and connected to one end of the same liquid inlet pipe 2, and the liquid inlet pipe 2 is located at the center of the side of the base plate 1 away from the cover plate 11.

[0024] Specifically, a diversion groove 13 is provided between the first rhombus 6 and the second rhombus 7, the second rhombus 7 and the third rhombus 8, the third rhombus 8 and the fourth rhombus 9, and the fourth rhombus 9 and the fifth rhombus 10, respectively, and the diversion groove 13 converges towards the center of the substrate 1.

[0025] Specifically, the tops and bottoms of the first rhombus 6, the second rhombus 7, the third rhombus 8, the fourth rhombus 9, and the fifth rhombus 10 are fixed and sealed to the inner bottom surface of the substrate 1 and the inner wall of the cover plate 11, respectively.

[0026] In this embodiment, during use, fluid is introduced into the diversion pipe 3 through the inlet pipe 2, and then the fluid is introduced from all sides of the substrate 1 into the guide groove 4 inside the substrate 1 through the diversion pipe 3. After the fluid level gradually rises to the diversion hole 5, the fluid simultaneously flows into the interior of the substrate 1 through the diversion hole 5 from all four sides of the inner wall of the guide groove 4, and enters the interior of the diversion groove 13 from the outer periphery of the substrate 1. It then passes sequentially through the diversion groove 13 between the first rhombus block 6 and the second rhombus block 7, and the diversion groove between the second rhombus block 7 and the third rhombus block 8. 13. The flow divider 13 between the third rhombus 8 and the fourth rhombus 9 and the flow divider 13 between the fourth rhombus 9 and the fifth rhombus 10 gradually converges towards its center until it converges to the liquid outlet pipe 12, and finally discharges from the liquid outlet pipe 12. This ensures the synchronicity of the fluid entering and exiting the substrate 1, and avoids the situation where the fluid enters and exits the substrate 1 with different path lengths, resulting in asynchronous fluid entry and exit, causing heat to accumulate in one place and uneven heat exchange. This effectively ensures the uniformity of heat exchange.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biomimetic fractal plate heat exchanger, comprising a substrate (1), flow guide grooves (4), and flow distribution holes (5), characterized in that: The substrate (1) has a flow guide groove (4) on its inner and outer sides. A plurality of flow diversion holes (5) communicating with the interior of the substrate (1) are provided on the inner wall surface of one side of the flow guide groove (4). The flow diversion holes (5) are arranged around the flow guide groove (4). A cover plate (11) is fixedly installed on the top of the substrate (1). A liquid outlet pipe (12) is provided at the center of the top of the cover plate (11). The liquid outlet pipe (12) is connected to the center of the interior of the substrate (1).

2. The biomimetic fractal plate heat exchanger according to claim 1, characterized in that: The substrate (1) has a first rhombus block (6) arranged around the inner wall of the substrate (1), a second rhombus block (7) is arranged on one side between two adjacent first rhombus blocks (6), a third rhombus block (8) is arranged on one side between two adjacent second rhombus blocks (7), a fourth rhombus block (9) is arranged on one side between two adjacent third rhombus blocks (8), and a fifth rhombus block (10) is arranged on one side between two adjacent fourth rhombus blocks (9).

3. The biomimetic fractal plate heat exchanger according to claim 1, characterized in that: A diversion pipe (3) is provided around the outside of the substrate (1). One end of the diversion pipe (3) extends into the guide groove (4) inside the substrate (1) and is sealed and connected to it. A diversion hole (5) is opened on one side of the inner wall of the guide groove (4) corresponding to the diversion pipe (3).

4. The biomimetic fractal plate heat exchanger according to claim 3, characterized in that: One end of each of the multiple diversion pipes (3) away from the interior of the guide groove (4) is sealed and connected to one end of the same liquid inlet pipe (2), which is located at the center of the side of the base plate (1) away from the cover plate (11).

5. A biomimetic fractal plate heat exchanger according to claim 2, characterized in that: A diversion groove (13) is provided between the first rhombus block (6) and the second rhombus block (7), the second rhombus block (7) and the third rhombus block (8), the third rhombus block (8) and the fourth rhombus block (9), and the fourth rhombus block (9) and the fifth rhombus block (10), respectively. The diversion groove (13) converges towards the center of the substrate (1).

6. A biomimetic fractal plate heat exchanger according to claim 2, characterized in that: The top and bottom of the first rhombus (6), the second rhombus (7), the third rhombus (8), the fourth rhombus (9), and the fifth rhombus (10) are fixed and sealed to the inner bottom surface of the substrate (1) and the inner wall of the cover plate (11), respectively.

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