Anti-gravity circulation heat dissipation method and device based on micro-nano porous medium structure

Abstract

The invention relates to an anti-gravity circulation heat dissipation method and device based on a micro-nano porous medium structure, and belongs to the technical field of heat management, the anti-gravity circulation heat dissipation device comprises a shell, a steam channel, a condenser and a condensation backflow pipeline, the shell is arranged on a heating device, the interior of the shell is hollow to form a vaporization cavity, the vaporization cavity is filled with the micro-nano porous medium structure, and the steam channel is communicated with the condensation backflow pipeline. A steam cavity is formed between the inner bottom wall of the shell and the micro-nano porous medium structure; the steam channel is arranged on the shell and communicated with the steam cavity, the steam channel extends downwards, the condenser is arranged at the end, away from the vaporization cavity, of the steam channel in a communicated mode, and the condenser is tightly attached to the lower portion of the blowing-up plate; the condensation backflow pipeline is arranged on the shell in a communicating mode and communicates with the condenser, and the micro-nano porous medium structure in the vaporization cavity and the condensation backflow pipeline are both filled with working medium liquid. The AAU has the advantages that the problem that a heat source above the AAU is difficult to effectively cool due to the structural characteristics of the blowing plate is solved, and the heat dissipation efficiency of the AAU is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of thermal management technology, and in particular to an anti-gravity circulation heat dissipation method and device based on a micro-nano porous medium structure. Background Art

[0002] Active antenna processing unit (AAU) is an important part of 5G. AAU consists of RRU and passive antenna, and heat sources are distributed in the upper, middle and lower parts. The highly integrated Massive MIMO technology used in it gives AAU powerful performance, but also causes high power consumption, which has become the main reason for the increase in energy consumption of 5G base stations. In addition, high power consumption causes equipment temperature rise, and excessive temperature affects the stability of the equipment.

[0003] At present, in order to solve the heat dissipation problem of AAU, traditional heat dissipation solutions often rely on the heat dissipation technology of the blowing plate. However, when the blowing plate is placed vertically, its large aperture design easily causes the phase change latent heat medium to settle under the action of gravity. Due to the different thermal conductivity of vapor and liquid, the temperature difference between the upper and lower parts is significant, which hinders the effective heat dissipation of the upper heat source, and thus makes it difficult to effectively dissipate the heat of the AAU as a whole, resulting in system performance degradation. Therefore, exploring efficient heat dissipation solutions to cope with the thermal management challenges brought by the high power consumption of AAU has become an urgent need for current research and practice. Summary of the invention

[0004] In order to improve the heat dissipation efficiency of AAU, the present application provides an anti-gravity circulation heat dissipation method and device based on a micro-nano porous medium structure.

[0005] The present application provides an anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure, which adopts the following technical solutions: An anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure comprises an outer shell, a steam channel, a condenser and a condensation reflux pipeline, wherein the outer shell is arranged on a heating device, the inner part of the outer shell is hollow to form a vaporization cavity, the vaporization cavity is filled with a micro-nano porous medium structure, and a steam cavity is formed between the inner bottom wall of the outer shell and the micro-nano porous medium structure; the steam channel is arranged on the outer shell and communicated with the steam cavity, the steam channel extends downward, the condenser is communicated and arranged at one end of the steam channel away from the vaporization cavity, and the condenser is tightly fitted with the lower part of the inflation plate; the condensation reflux pipeline is communicated and arranged on the outer shell and communicated with the condenser, and the micro-nano porous medium structure in the vaporization cavity and the condensation reflux pipeline are both filled with working fluid liquid.

[0006] By adopting the above technical solution, the heating device generates heat when it works, and the heat is conducted to the vaporization chamber through the shell. The micro-nano porous medium structure filled in the vaporization chamber increases the heating area of ​​the working fluid liquid. After the industrial liquid is heated, it evaporates to form steam, and the steam flows into the steam chamber. Since the pressure at the condensation end decreases after the steam is condensed at the condensation end, and the pressure in the steam chamber is large, the steam in the steam chamber flows to the condenser through the steam channel against gravity under the action of the pressure difference. The condenser condenses the steam into working fluid liquid, and the working fluid liquid flows back to the vaporization chamber through the condensation reflux pipeline under the action of the pressure difference for heating and evaporation again, so as to circulate and efficiently dissipate the heat of the heating device. In the process of the steam flowing to the condenser, the steam exchanges heat with the phase change latent heat working fluid accumulated under the blowing plate, so that the phase change latent heat working fluid accumulated under the blowing plate is heated and evaporated to increase the temperature under the blowing plate, reduce the temperature difference between the upper and lower parts of the blowing plate, improve the problem that the heat source above the AAU is difficult to effectively cool due to the structural characteristics of the blowing plate itself, and effectively improve the heat dissipation efficiency of the AAU.

[0007] Optionally, a plurality of heat transfer channels are provided in the vaporization chamber, and the plurality of heat transfer channels are all connected to the steam chamber.

[0008] By adopting the above technical solution, the working fluid liquid in the vaporization chamber is heated to form steam and then accumulates in multiple heat transfer channels, and then flows from the heat transfer channels to the steam chamber for accumulation. The heat transfer channels guide the steam flow, thereby improving the efficiency of the steam flow into the steam chamber.

[0009] Optionally, the micro-nano porous medium structure away from one end of the steam chamber forms a buffer chamber in the vaporization chamber, one end of the buffer chamber is connected to the condensation reflux pipeline, and the other end of the buffer chamber is connected to multiple heat transfer channels.

[0010] By adopting the above technical scheme, when the working fluid liquid flows back into the buffer chamber, the micro-nano porous medium structure in the buffer chamber stores the working fluid liquid and provides a buffer for the working fluid liquid to stabilize the flow rate of the working fluid liquid to the vaporization chamber. At the same time, the micro-nano porous medium structure filled with working fluid liquid blocks the steam, limiting the disorderly rise of steam in the vaporization chamber. When the working fluid liquid flows in the micro-nano porous medium structure, a capillary pump force is generated to promote the working fluid liquid to flow back to the buffer chamber and promote the steam to flow toward the condenser end against gravity, thereby ensuring the efficient operation of the entire heat dissipation pipeline.

[0011] Optionally, the inner wall of the condensation reflux pipeline close to the condenser end is smooth, and a micro-nano porous medium structure is provided on the inner wall of the condensation reflux pipeline close to the buffer chamber end.

[0012] By adopting the above technical solution, the smooth inner wall of the condensation reflux pipeline close to the condenser end reduces the resistance when the steam condenses to form the working fluid liquid and flows toward the steam chamber. The micro-nano porous medium structure filled in the condensation reflux pipeline close to the buffer chamber end provides capillary pumping force for the working fluid liquid before it flows into the buffer chamber, thereby ensuring the stability of the working fluid liquid when it flows back to the buffer chamber.

[0013] Optionally, the housing includes a cover plate and a bottom plate, the cover plate is buckled and arranged on the bottom plate to form an internal hollow vaporization chamber, and the bottom plate is arranged on the heating device.

[0014] By adopting the above technical solution, a hollow vaporization chamber is formed by snapping the cover plate onto the base plate, which makes it convenient for workers to assemble and process the micro-nano porous medium structure on the base plate, and then snap the cover plate onto the base plate to form the vaporization chamber, and also makes it convenient to open the cover plate later to maintain the micro-nano porous medium structure.

[0015] Optionally, the thickness of the micro-nano porous medium structure on the bottom plate side is smaller than that of the micro-nano porous medium structure on the cover plate side.

[0016] By adopting the above technical solution, the heat generated by the heating device is transferred to the vaporization chamber through the bottom plate. The thickness of the micro-nano porous medium structure on the bottom plate side is thinner, which is convenient for heat exchange with the working fluid liquid, while the thickness of the micro-nano porous medium structure on the cover plate side is thicker, which reduces the heat dissipation to the cover plate side, thereby ensuring the pressure of the generated steam and ensuring that the steam flows toward the steam chamber against gravity.

[0017] Optionally, a heating device is provided on the cover plate side, and the heating device on the cover plate side is directly opposite to the heating device on the bottom plate side.

[0018] By adopting the above technical solution, through the relative arrangement of the two heating devices on the cover side and the bottom plate side, the cover side and the bottom plate side of the vaporization chamber can be heated evenly, thereby making the steam in the vaporization chamber evenly generated, facilitating the stable flow of steam to the steam chamber.

[0019] Optionally, a heat transfer mechanism for conducting heat between two heating devices is provided on the shell, and the heat transfer mechanism includes a heat conduction sheet and an elastic member. The heat conduction sheet is provided on the shell, and the elastic member is provided on the shell and is used to drive the two ends of the heat conduction sheet to fit respectively on the two heating devices.

[0020] By adopting the above technical solution, the elastic member drives the two ends of the heat conduction sheet to fit respectively on the two heating devices. When there is a temperature difference between the two heating devices, the heat of the heating device with a higher temperature is conducted to the heating device with a lower temperature through the heat conduction sheet, so that the temperatures of the two heating devices remain uniform, further ensuring the uniformity of steam generation on the outer shell side and the bottom plate side of the vaporization chamber.

[0021] Optionally, the elastic member includes an elastic sheet, one of which is disposed on the cover plate and one on the bottom plate respectively, the elastic sheet is pressed on the heat conduction sheet, and the elastic sheet always has a tendency to drive the heat conduction sheet to move toward the direction close to the heat generating device.

[0022] By adopting the above technical solution, the elastic sheet presses the heat conduction sheet, so that the heat conduction sheet always has a tendency to move toward the direction close to the heating device and fits on the heating device, and when the heat conduction sheet needs to be replaced, the heat conduction sheet can be directly taken out from under the elastic sheet, which is convenient for replacing the heat conduction sheet.

[0023] The present application provides an anti-gravity circulation heat dissipation method based on a micro-nano porous medium structure, which adopts the following technical solutions: An anti-gravity circulation heat dissipation method based on a micro-nano porous medium structure comprises the following steps: S1: The heating element generates heat after working, and the heat is transferred to the vaporization chamber. The working fluid in the vaporization chamber evaporates due to the heat, and the steam generated by the evaporation gathers in the steam chamber; S2: The steam in the steam chamber flows to the condenser under the pressure difference between the condenser and the steam chamber; S3: The steam is condensed into working fluid under the action of the condenser, flows back to the buffer chamber through the capillary pump force generated by the buffer chamber and the heat transfer channel, and then flows from the buffer chamber to the vaporization chamber.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the steam flows to the condenser, the steam exchanges heat with the phase change latent heat medium accumulated under the blowing plate, reducing the temperature difference between the upper and lower parts of the blowing plate, improving the problem that the heat source above the AAU is difficult to effectively cool due to the structural characteristics of the blowing plate itself, and effectively improving the heat dissipation efficiency of the AAU; 2. The micro-nano porous medium structure filled with working fluid blocks the steam, limiting the disorderly rise of steam in the vaporization chamber. When the working fluid flows in the micro-nano porous medium structure, it will generate capillary pumping force, promote the condensed working fluid to flow back to the buffer chamber, and promote the steam to flow to the condenser end against gravity, ensuring the efficient operation of the entire heat dissipation pipeline; 3. The relative arrangement of the two heating devices on the cover plate side and the bottom plate side enables the cover plate side and the bottom plate side of the vaporization chamber to be heated evenly, thereby making the steam in the vaporization chamber evenly generated, facilitating the stable flow of steam to the steam chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the anti-gravity circulation heat dissipation method and device based on the micro-nano porous medium structure of Example 1 of the present application.

[0026] Figure 2It is a schematic diagram of the cross-sectional structure of Example 1 of the present application.

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure from another viewing angle of Example 1 of the present application.

[0028] Figure 4 It is a structural diagram of Example 2 of the present application.

[0029] Figure 5 It is a structural schematic diagram of another perspective of Example 2 of the present application.

[0030] Figure numerals: 1. outer shell; 11. cover plate; 12. bottom plate; 2. steam channel; 3. condenser; 4. condensation reflux pipeline; 5. vaporization chamber; 6. steam chamber; 7. heat transfer channel; 8. buffer chamber; 9. heat transfer mechanism; 91. heat conduction plate; 92. elastic member; 921. elastic plate. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] Example 1 The embodiments of the present application disclose an anti-gravity circulation heat dissipation method and device based on a micro-nano porous medium structure.

[0033] Reference Figure 1 The anti-gravity circulation heat dissipation device based on the micro-nano porous medium structure includes a shell 1, a steam channel 2, a condenser 3 and a condensation reflux pipeline 4.

[0034] Reference Figure 1 , Figure 2 The outer shell 1 is installed on the heating device. The inner part of the outer shell 1 is hollow to form a vaporization chamber 5. The outer shell 1 includes a cover plate 11 and a bottom plate 12. The cover plate 11 is a cube-shaped shell with a hollow interior and an opening at one end. The bottom plate 12 is a rectangular plate. The bottom plate 12 is installed on the heating device. The cover plate 11 is buckled and installed on the bottom plate 12 to form a shell with a hollow interior. In this embodiment, the cover plate 11 and the bottom plate 12 are both made of copper and have good thermal conductivity.

[0035] Reference Figure 1 , Figure 2The vaporization chamber 5 is filled with a micro-nano porous medium structure, and the micro-nano porous medium structure filled in the vaporization chamber 5 is spaced apart from the bottom wall of the vaporization chamber 5 to form an internal hollow steam chamber 6; the steam channel 2 is installed on the cover plate 11, the steam channel 2 is connected to the steam chamber 6, and the steam channel 2 extends downward in a direction away from the steam chamber 6, the condenser 3 is connected and installed at one end of the steam channel 2 away from the steam chamber 6, and the condenser 3 is tightly fitted under the blowing plate, one end of the condensation reflux pipeline 4 is connected and installed on the condenser 3, and the other end of the condensation reflux pipeline 4 is connected and installed on the top of the cover plate 11; the condensation reflux pipeline 4 and the micro-nano porous medium structure of the vaporization chamber 5 are both filled with working fluid liquid. In this embodiment, the condensation reflux pipeline 4 and the steam channel 2 are both copper tubes.

[0036] The staff opens the cover plate 11 from the bottom plate 12, and then installs the micro-nano porous medium structure on the bottom plate 12 first. After processing the micro-nano porous medium structure, the cover plate 11 is snapped onto the bottom plate 12 to form a vaporization chamber 5, and then the bottom plate 12 is installed on the heating device. The micro-nano porous medium structure can be conveniently assembled and processed in the shell 1, and the staff can subsequently remove the cover plate 11 from the bottom plate 12 to conveniently maintain the micro-nano porous medium structure on the bottom plate 12.

[0037] When the heating device is working and generates heat, the heat of the heating device is conducted to the bottom plate 12, and then conducted to the working fluid liquid in the vaporization chamber 5 by the bottom plate 12. The micro-nano porous medium structure in the vaporization chamber 5 allows the working fluid liquid to be heated over a larger area through its porous structure, thereby increasing the heating area of ​​the working fluid liquid. After being heated, the working fluid liquid evaporates into steam, and the steam flows to the steam chamber 6 and accumulates. The condenser 3 below the steam chamber 6 condenses the steam that flows to the condenser 3 through the steam channel 2, thereby reducing the pressure of the steam channel 2 in the condenser 3 section, while the pressure in the steam chamber 6 is relatively large. The steam accumulated in the steam chamber 6 can flow to the condenser 3 end in the steam channel 2 against gravity under the action of the pressure difference, thereby improving the steam generation efficiency and the efficiency of the steam flowing to the condenser 3 against gravity, thereby improving the cooling effect on the heating device. The condenser 3 will steam The steam condenses to form a working fluid liquid. Due to the pressure of the steam flowing from the steam chamber 6 to the condenser 3 in the steam channel 2, and the pressure difference of the working fluid liquid in the vaporization chamber 5 flowing to the steam chamber 6 after evaporation, the working fluid liquid condensed at the condenser 3 flows back to the vaporization chamber 5 through the condensation reflux pipeline 4, and is heated and vaporized again, thereby realizing the circulation of heat dissipation for the heating device. At the same time, in the process of the steam flowing to the condenser 3 against gravity, the steam will also exchange heat with the phase change latent heat working fluid accumulated under the blowing plate, so that the phase change latent heat working fluid accumulated under the blowing plate is heated, thereby reducing the temperature difference between the upper and lower parts of the blowing plate, and at the same time, the working fluid liquid in the vaporization chamber 5 is heated and evaporated to dissipate heat for the heating device in a targeted manner, thereby improving the problem that the heat source above the AAU is difficult to effectively cool due to the structural characteristics of the blowing plate itself, and effectively improving the heat dissipation efficiency of the AAU.

[0038] Reference Figure 2 , Figure 3 A plurality of heat transfer channels 7 are provided in the vaporization chamber 5, and the plurality of heat transfer channels 7 are arranged on the micro-nano porous medium structure in the vaporization chamber 5, and the plurality of heat transfer channels 7 are all connected to the steam chamber 6. After the working fluid liquid in the vaporization chamber 5 is heated and evaporated to form steam, the steam flows to the heat transfer channel 7, and then is collected from the heat transfer channel 7 and flows to the steam chamber 6 for accumulation. The heat transfer channel 7 guides and collects the steam flow channel, providing a flow path for the steam to flow to the steam chamber 6, and effectively improving the flow efficiency of the steam flowing to the steam chamber 6 for accumulation.

[0039] Reference Figure 1 , Figure 2 A buffer chamber 8 is formed at the end of the vaporization chamber 5 away from the steam chamber 6 in the micro-nano porous medium structure. The end of the buffer chamber 8 away from the steam chamber 6 is connected to the condensation reflux pipeline 4, and the end of the buffer chamber 8 close to the steam chamber 6 is connected to multiple heat transfer channels 7.

[0040] The working fluid liquid refluxes into the buffer chamber 8, which stores the working fluid liquid. At the same time, the micro-nano porous medium structure in the buffer chamber 8 buffers the working fluid liquid flowing toward the steam chamber 6 end, thereby stabilizing the flow rate of the working fluid liquid flowing toward the steam chamber 6. After the working fluid liquid is heated in the vaporization chamber 5 to form steam and flows toward the heat transfer channel 7, the micro-nano porous medium structure in the buffer chamber 8 can block the steam and limit the steam from rising in the vaporization chamber 5. At the same time, when the working fluid liquid flows in the micro-nano porous medium structure in the buffer chamber 8, due to the capillary structure of the micro-nano porous medium structure, a capillary pumping force is generated. The capillary pumping force acts on the working fluid liquid and steam, thereby promoting the steam to flow from the heat transfer channel 7 against gravity to the steam chamber 6, and promoting the working fluid liquid to flow back from the condenser 3 end to the buffer chamber 8, thereby ensuring the efficient operation of the entire heat dissipation pipeline.

[0041] Reference Figure 2 , Figure 3 , the thickness of the micro-nano porous medium structure attached to the bottom plate 12 is less than the thickness of the micro-nano porous medium structure attached to the cover plate 11. After the heating device generates heat, the heat is transferred to the bottom plate 12, and then transferred from the bottom plate 12 to the micro-nano porous medium structure and the working fluid. The thinner design of the micro-nano porous medium structure on the side of the bottom plate 12 allows the heat to be efficiently exchanged with the working fluid. The thicker design of the micro-nano porous medium structure on the side of the cover plate 11 can reduce the flow of steam to the side of the cover plate 11 and cause the heat to be lost from the side of the cover plate 11, thereby ensuring the pressure of the working fluid after the heat generates steam, and further ensuring that the steam flows toward the steam chamber 6 against gravity.

[0042] Reference Figure 1 The interior of a section of the condensation reflux pipeline 4 close to the condenser 3 is smooth, and the inner wall of one end of the condensation reflux pipeline 4 close to the buffer chamber 8 is filled and installed with a micro-nano porous medium structure.

[0043] After the condenser 3 condenses the steam into a working fluid liquid, the working fluid liquid flows from the end of the condensation reflux pipeline 4 close to the condenser 3 to the buffer chamber 8. The smooth inner wall of the condensation reflux pipeline 4 close to the condenser 3 reduces the resistance of the steam when it condenses to form a working fluid liquid and flows toward the steam chamber 6. The micro-nano porous medium structure filled at the end of the condensation reflux pipeline 4 close to the buffer chamber 8 provides a buffer for the working fluid liquid before it flows into the buffer chamber 8, thereby improving the stability of the working fluid liquid when it flows back to the buffer chamber 8.

[0044] An anti-gravity circulation heat dissipation method based on a micro-nano porous medium structure comprises the following steps: S1: The heating element generates heat after operation, and the heat is transferred to the vaporization chamber 5. The working fluid in the vaporization chamber 5 evaporates due to the heat, and the vapor generated by the evaporation gathers in the steam chamber 6; S2: The steam in the steam chamber 6 flows to the condenser 3 under the pressure difference between the condenser 3 and the steam chamber 6; S3: The steam is condensed into working fluid under the action of the condenser 3 , flows back to the buffer chamber 8 through the capillary pump force generated by the buffer chamber 8 and the heat transfer channel 7 , and then flows from the buffer chamber 8 to the vaporization chamber 5 .

[0045] The implementation principle of Example 1 of the present application is as follows: the heating device generates heat when it works, and the heat is transferred to the micro-nano porous medium structure and the working fluid liquid in the vaporization chamber 5. The micro-nano porous medium structure allows the working fluid liquid to diffuse, thereby increasing the heating area of ​​the working fluid liquid. After the working fluid liquid is heated, steam is formed, and the steam gathers in the heat transfer channel 7, flows from the heat transfer channel 7 to the steam chamber 6 for accumulation, and then, under the capillary pumping force generated by the working fluid liquid in the micro-nano porous medium structure in the buffer chamber 8 and the pressure difference between the condenser 3 and the steam chamber 6 after the condenser 3 condenses the steam, the steam flows from the steam channel 2 to the condenser 3, and the condenser 3 condenses the steam to form the working fluid liquid. The working fluid is pressurized by the steam pressure, the pressure difference, and the capillary pumping force. Under the action, the steam flows back to the buffer chamber 8 through the condensation reflux pipeline 4, and the buffer chamber 8 stores and buffers the working fluid liquid, stabilizes the flow rate of the working fluid liquid flowing to the vaporization chamber 5, and blocks the steam, limiting the disorderly rise of the steam from the vaporization chamber 5. Then the working fluid liquid flows smoothly to the vaporization chamber 5 to be heated again, thereby continuously and efficiently dissipating the heat of the heating device, and in the process of the steam flowing to the condenser 3, heat exchange is performed with the phase change latent heat working fluid accumulated under the blowing plate, so that the phase change latent heat working fluid accumulated under the blowing plate is heated and evaporated to increase the temperature under the blowing plate, reduce the temperature difference between the upper and lower parts of the blowing plate, improve the problem that the heat source above the AAU is difficult to effectively cool due to the structural characteristics of the blowing plate itself, and effectively improve the heat dissipation efficiency of the AAU.

[0046] Example 2 Reference Figure 4 , Figure 5 The embodiment of the present application is different from the embodiment 1 in that: a heating device is installed on both the cover plate 11 side and the bottom plate 12 side, and the heating device on the cover plate 11 side and the heating device on the bottom plate 12 side are arranged opposite to each other; a heat transfer mechanism 9 is installed on the housing 1, and the heat transfer mechanism 9 is used to conduct heat between the two heating devices. The heat transfer mechanism 9 includes a heat conduction sheet 91 and an elastic member 92. In this embodiment, the heat conduction sheet 91 is a copper frame with one end open. The heat conduction sheet 91 is installed on the cover plate 11, and both ends of the heat conduction sheet 91 extend to the cover plate 11. At the heating device on the cover plate 11 and the heating device on the bottom plate 12, the elastic member 92 is installed on the cover plate 11. The elastic member 92 is used to drive the two ends of the heat conduction sheet 91 to fit respectively on the two heating devices. The elastic member 92 is an elastic sheet 921. One elastic sheet 921 is respectively provided on the cover plate 11 and the bottom plate 12. The elastic sheet 921 abuts against the end of the heat conduction sheet 91. The elastic sheet 921 always has a tendency to drive the heat conduction sheet 91 to move in a direction close to the heating device. In this embodiment, the elastic sheet 921 is a metal sheet made of spring steel.

[0047] The implementation principle of Example 2 of the present application is as follows: the staff installs the heat conducting sheet 91 onto the cover plate 11, and makes the elastic sheet 921 press and hold the side of the heat conducting sheet 91 away from the heating device, and the elastic sheet 921 can drive the heat conducting sheet 91 to fit on the heating device. When the heat conducting sheet 91 needs to be replaced later, it is only necessary to directly remove the heat conducting sheet 91 from the state where it is pressed by the elastic sheet 921, so that it can be replaced conveniently and quickly; when there is a temperature difference between the temperatures of the two heating devices, the heat conducting sheet 91 can conduct the heat of the heating device with a higher temperature to the heating device with a lower temperature, and the two heating devices are respectively on the side of the cover plate 11 The bottom plate 12 is heated so that the temperature of the cover plate 11 side and the bottom plate 12 side are kept consistent, and the temperature of the two sides of the vaporization chamber 5 is kept uniform. Then, the two heating devices on the two sides of the vaporization chamber 5 evenly transfer heat to the two sides of the vaporization chamber 5, so that the micro-nano porous medium structure and the working fluid liquid on both sides of the vaporization chamber 5 are evenly heated. After the working fluid liquid on both sides of the vaporization chamber 5 is heated, steam can be evenly generated, so that the steam is gathered from both sides of the vaporization chamber 5 to the heat transfer channel 7, which effectively improves the uniformity of steam generation in the vaporization chamber 5, improves the stability of steam flowing into the steam chamber 6, and can dissipate heat for the two heating devices at the same time.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure, characterized in that: The invention comprises a shell (1), a steam channel (2), a condenser (3) and a condensation return pipeline (4), wherein the shell (1) is arranged on the heating device, the shell (1) is hollow inside to form a vaporization chamber (5), the vaporization chamber (5) is filled with a micro-nano porous medium structure, and a steam chamber (6) is formed between the inner bottom wall of the shell (1) and the micro-nano porous medium structure; the steam channel (2) is arranged on the shell (1) and communicates with the steam chamber (6), the steam channel (2) extends downward, the condenser (3) is arranged in communication with one end of the steam channel (2) away from the vaporization chamber (5), and the condenser (3) is tightly fitted with the lower part of the inflation plate; the condensation return pipeline (4) is arranged in communication with the shell (1) and communicates with the condenser (3), and the micro-nano porous medium structure in the vaporization chamber (5) and the condensation return pipeline (4) are both filled with working fluid liquid.

2. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 1, characterized in that: A plurality of heat transfer channels (7) are provided in the vaporization chamber (5), and the plurality of heat transfer channels (7) are all in communication with the steam chamber (6).

3. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 2 is characterized in that: A micro-nano porous medium structure away from one end of the steam chamber (6) forms a buffer chamber (8) in the vaporization chamber (5); one end of the buffer chamber (8) is connected to the condensation reflux pipeline (4); and the other end of the buffer chamber (8) is connected to a plurality of heat transfer channels (7).

4. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 3 is characterized by: The inner wall of the condensation reflux pipeline (4) close to the condenser (3) is smooth, and a micro-nano porous medium structure is provided on the inner wall of one end of the condensation reflux pipeline (4) close to the buffer chamber (8).

5. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 1, characterized in that: The housing (1) comprises a cover plate (11) and a bottom plate (12); the cover plate (11) is buckled and arranged on the bottom plate (12) to form an internal hollow vaporization chamber (5); and the bottom plate (12) is arranged on a heating device.

6. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 5, characterized in that: The thickness of the micro-nano porous medium structure on the bottom plate (12) side is smaller than that of the micro-nano porous medium structure on the cover plate (11) side.

7. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 5, characterized in that: A heating device is provided on the side of the cover plate (11), and the heating device on the side of the cover plate (11) is directly opposite to the heating device on the side of the bottom plate (12).

8. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 7, characterized in that: The housing (1) is provided with a heat transfer mechanism (9) for conducting heat between the two heating devices. The heat transfer mechanism (9) comprises a heat transfer sheet (91) and an elastic member (92). The heat transfer sheet (91) is provided on the housing (1). The elastic member (92) is provided on the housing (1) and is used to drive the two ends of the heat transfer sheet (91) to fit respectively on the two heating devices.

9. The anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure according to claim 8, characterized in that: The elastic member (92) comprises an elastic sheet (921), one elastic sheet (921) being provided on the cover plate (11) and one elastic sheet (921) being provided on the bottom plate (12), respectively; the elastic sheet (921) is pressed against the heat conduction sheet (91), and the elastic sheet (921) always has a tendency to drive the heat conduction sheet (91) to move in a direction close to the heating device.

10. A heat dissipation method applied to an anti-gravity circulation heat dissipation device based on a micro-nano porous medium structure as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1: After the heating element is in operation, heat is generated, and the heat is transferred to the vaporization chamber (5). The working fluid in the vaporization chamber (5) is evaporated by the heat, and the vapor generated by the evaporation is gathered in the vapor chamber (6); S2: the steam in the steam chamber (6) flows to the condenser (3) under the action of the pressure difference between the condenser (3) and the steam chamber (6); S3: The steam is condensed into a working fluid liquid under the action of the condenser (3), flows back to the buffer chamber (8) through the capillary pump force generated by the buffer chamber (8) and the heat transfer channel (7), and then flows from the buffer chamber (8) into the vaporization chamber (5).

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