Thermally driven heat dissipation power generation device based on carbon nanotube doped fluid

Abstract

The application provides a heat-driven heat dissipation power generation device based on carbon nanotube doped fluid, which is used for CPU heat dissipation and waste heat conversion and comprises a heat energy circulation assembly and a thermoelectric conversion assembly; the heat energy circulation assembly is connected with the thermoelectric conversion assembly; the heat energy circulation assembly comprises a heat energy exchange module, a circulation flow channel module, a heat energy transport module and a flow assisting module; the thermoelectric conversion assembly comprises a power generation and energy storage module and a heat engine driving module; the heat energy circulation assembly absorbs CPU heat and transmits the heat to the thermoelectric conversion assembly through heat-conducting oil containing carbon nanotubes; a heat-driven capsule in the heat engine driving module is deformed by heat to drive a micro permanent magnet to move, cut a magnetic induction line to generate current and store the current; the application can convert low-quality waste heat into electric energy while effectively dissipating heat, thereby improving energy utilization efficiency.

Description

Technical Field

[0001] This invention relates to the field of CPU heat dissipation and waste heat recovery technology, and in particular to a heat-driven heat dissipation and power generation device based on carbon nanotube-doped fluid. Background Technology

[0002] With the continuous improvement of computer computing performance, the power consumption and heat generation of the central processing unit (CPU) are increasing exponentially. High heat flux density not only restricts the operating frequency and lifespan of the chip, but also directly affects the stability of the system. At present, CPU heat dissipation mainly relies on two methods: air cooling and liquid cooling. Air cooling is limited by fan speed and heat sink fin area, and is often inadequate when dealing with high-performance processors. Although liquid cooling has higher thermal conductivity, it relies on active components such as water pumps, resulting in problems such as high power consumption, high noise, and easy leakage during long-term operation. Moreover, traditional liquid cooling systems only discharge waste heat into the atmosphere, failing to achieve secondary energy utilization, resulting in a large amount of low-quality heat energy being wasted.

[0003] Meanwhile, with the development of the Internet of Things (IoT) and edge computing, the power supply problem for low-power devices such as micro-sensors and wireless nodes is becoming increasingly prominent. In data centers and personal computer terminals, if waste heat from the CPU could be used to generate electricity on-site to power sensors or auxiliary circuits, it would be possible to build a self-powered intelligent cooling system. However, existing thermoelectric conversion technologies, such as TEG (thermoelectric cooling devices), are limited by material costs and conversion efficiency, making it difficult to balance heat dissipation performance and power generation within the confined space of a CPU, thus limiting their widespread application.

[0004] In recent years, thermally driven fluid power generation technology has gradually attracted attention. By circulating a working fluid naturally between a heat source and a cold source, it drives magnetic components to move and cut magnetic field lines to generate current, achieving passive thermoelectric conversion without pumps or compressors. However, existing devices of this type generally suffer from the following technical defects: First, the working fluid's thermal conductivity is insufficient, leading to sluggish thermal response and difficulty in matching the transient thermal shock of the CPU; second, the complex structure of the piston, impeller, and other drive units makes them prone to jamming after miniaturization, compromising reliability; and third, poor fluid circulation stability makes it difficult to form a continuous, unidirectional drive flow in a vertical layout, limiting its deployment in a compact chassis space.

[0005] In conclusion, developing a CPU cooling device that combines efficient heat dissipation, passive drive, waste heat power generation, and compact structure is of great significance for improving the energy efficiency of computing devices and building a self-powered monitoring system. Summary of the Invention

[0006] This invention provides a heat-driven heat dissipation and power generation device based on carbon nanotube-doped fluid, in order to solve the problems of difficult pump-free miniaturization of heat dissipation and low-quality heat recovery in advanced technologies.

[0007] To solve the above-mentioned technical problems, the present invention is implemented as follows:

[0008] This invention provides a heat-driven heat dissipation and power generation device based on carbon nanotube-doped fluid for CPU heat dissipation and waste heat conversion, including a heat energy circulation component and a thermoelectric conversion component; the heat energy circulation component is connected to the thermoelectric conversion component.

[0009] The thermal energy circulation component includes a heat exchange module, a circulation channel module, a heat transport module, and a flow auxiliary module; the thermoelectric conversion component includes a power generation and energy storage module and a heat engine drive module; the heat exchange module includes a CPU heat-conducting base, a heat-conducting medium layer, and heat dissipation fins; the circulation channel module includes a main channel pipe section, a reinforced heat transfer inner wall, and a flow channel seal; the heat transport module includes heat-conducting oil, carbon nanotubes, and a nano-dispersant; the flow auxiliary module includes a unidirectional flow guide to prevent backflow; the power generation and energy storage module includes an induction energy harvesting coil, a magnetic core, an electrical energy regulation unit, and an energy storage unit; the heat engine drive module includes a heat-driven capsule and a micro permanent magnet.

[0010] The thermal energy circulation component absorbs the heat generated by the CPU and transfers the heat to the heat engine drive module through the thermal energy transport module. The thermal drive capsule deforms and increases in volume when heated, and the change in buoyancy causes the micro permanent magnet to float up, thereby generating current in the power generation and energy storage module by cutting magnetic field lines.

[0011] The thermally conductive medium layer is disposed between the CPU thermally conductive base and the computer CPU to enhance the heat exchange between the CPU thermally conductive base and the CPU.

[0012] The circulating flow channel module is located between the heat exchange module and the heat transport module. The inner wall of the main flow channel section is provided with the enhanced heat transfer inner wall. The main flow channel section forms a closed loop. The closed loop is spatially arranged in a vertical elliptical ring shape, including an ascending pipe section, a descending pipe section, and a connecting elbow. The ascending pipe section contacts the CPU heat-conducting base for heat exchange and absorbs heat. The descending pipe section contacts the heat dissipation fins for heat exchange and diffuses heat to the external atmospheric environment.

[0013] The enhanced heat transfer inner wall adopts a microgroove structure set along the flow direction. Based on the field synergy principle, this structure can guide the direction of the fluid velocity field and the temperature gradient field to be consistent, thereby significantly improving the convective heat transfer coefficient.

[0014] The vertical elliptical ring refers to the plane of the entire closed loop being perpendicular to the horizontal plane, allowing the fluid to form a stable natural circulation with the assistance of gravity.

[0015] The flow channel seal is installed at the connection of the rising pipe section, the falling pipe section and the connecting elbow to ensure the fluid's sealing performance, effectively isolate it from the outside air, prevent the heat transfer oil from oxidizing and deteriorating at high temperatures, and ensure the long-term stability of the carbon nanotube-doped fluid.

[0016] The carbon nanotubes are doped into the heat-conducting oil; the nano-dispersant is dissolved in the heat-conducting oil to prevent the carbon nanotubes from agglomerating; the carbon nanotubes include at least one of single-walled carbon nanotubes and multi-walled carbon nanotubes.

[0017] The carbon nanotubes are purified before use to remove impurities such as catalysts.

[0018] The heat-driven heat dissipation and power generation device based on carbon nanotube-doped fluid also includes a micropump; the micropump is disposed in the circulation channel module and is used to drive the fluid circulation in the heat transport module; the micropump is an auxiliary fluid circulation flow and is only activated when the heat-driven heat dissipation and power generation device based on carbon nanotube-doped fluid is first put into operation; the unidirectional flow guide is disposed at at least one upstream and downstream of the micropump to prevent fluid backflow and enable the heat-driven capsule to move in one direction.

[0019] The micropump includes at least one of piezoelectric micropump and electromagnetic micropump. When the device is first put into operation, the micropump starts briefly to drive fluid circulation, causing the thermally driven capsule to enter the movement track between the rising pipe section and the falling pipe section. Once the circulation is established, the thermally driven capsule spontaneously maintains the circulation movement by relying on the buoyancy difference generated by the thermal expansion and cooling contraction. The micropump then stops working, and the device enters a passive operation state, requiring no external power input.

[0020] The unidirectional flow guide only allows the thermally driven capsule to pass through when it is in a contracted state, while preventing movement when the thermally driven capsule is in an expanded state, thereby ensuring that the thermally driven capsule maintains unidirectional circulation in a closed loop.

[0021] The inductive energy harvesting coil is wound around the outer layer of the magnetic core, and the miniature permanent magnet circulates within the fluid flow area surrounded by the magnetic core; the power regulation unit includes at least a parallel bus, a rectifier circuit, a filter circuit, and a voltage regulator circuit, used to convert the alternating current generated by the inductive energy harvesting coil into stable direct current and store it in the energy storage unit.

[0022] The parallel bus is used to combine the AC power output from multiple induction energy harvesting coils into one channel for current amplification; the rectifier circuit is a full-bridge rectifier circuit for converting AC power into pulsating DC power; the filter circuit includes at least one electrolytic capacitor for filtering out ripple components in the pulsating DC power; the voltage regulator circuit is a boost DC-DC converter for boosting the filtered DC power to the rated charging voltage of the energy storage unit and outputting stable DC power.

[0023] The heat-driven capsule includes a sealed capsule formed by a flexible deformable film; the sealed capsule is filled with a temperature-sensitive deformable material; an inert insulating layer is provided on the outer surface of the flexible deformable film; the temperature-sensitive deformable material expands in volume when heated, driving the heat-driven capsule to deform; after losing heat, the heat-driven capsule shrinks in volume and increases in density, sinks and resets under the action of gravity, forming a cyclic motion; a micro permanent magnet is disposed inside the heat-driven capsule for fixation.

[0024] The mass fraction of the carbon nanotubes in the heat transfer oil ranges from 0.5% to 3%.

[0025] The carbon nanotubes can ensure uniform dispersion in the heat transfer oil, effectively prevent agglomeration and sedimentation in conjunction with the nano-dispersant, and maximize the overall thermal conductivity of the nanofluid, thereby accelerating the heat transfer rate of the CPU and meeting the thermal response and power generation efficiency requirements of the overall device.

[0026] The nano-dispersant is used to adsorb onto the surface of the carbon nanotubes, and inhibits the agglomeration of carbon nanotubes in the heat transfer oil through steric hindrance or electrostatic repulsion, so that it remains in a monodisperse or small agglomerate state, thereby maintaining the long-term dispersion stability and thermal conductivity of the carbon nanotube-doped fluid.

[0027] The temperature-sensitive deformation form includes at least one of a low-boiling-point phase change working fluid and an elastic metal sheet; when the temperature-sensitive deformation form is a low-boiling-point phase change working fluid, it undergoes vaporization and volume expansion upon heating; when the temperature-sensitive deformation form is an elastic metal sheet, it recovers from a wrinkled shape to a preset unfolded shape upon heating, thereby increasing the volume of the heat-driven capsule.

[0028] In this invention, by doping carbon nanotubes into the heat-conducting oil, the thermal conductivity and thermal response speed of the working fluid are significantly improved, enabling timely response to transient thermal shocks from the CPU and solving the problem of insufficient thermal conductivity in existing working fluids. Utilizing the thermally sensitive deformation characteristics of the embedded heat-driven capsule—expansion upon heating and contraction upon cooling—buoyancy-driven motion is spontaneously generated in a closed loop, eliminating the need for external water pumps or mechanical drive components. This achieves passive, highly reliable fluid circulation, overcoming the shortcomings of traditional liquid cooling systems such as high power consumption, easy leakage, and easy jamming of the drive unit after miniaturization. By cutting the magnetic field lines of the induction energy harvesting coil as the micro permanent magnet moves with the heat-driven capsule, the CPU waste heat is converted into electrical energy and stored by the energy regulation unit, realizing the reuse of low-quality thermal energy and providing a self-powered solution for energy-consuming components. In addition, the circulation channel module adopts a vertical elliptical ring layout, with the rising pipe section absorbing heat in contact with the CPU heat-conducting base and the descending pipe section releasing heat in contact with the heat sink fins, forming a stable natural circulation path that meets the CPU's heat dissipation requirements while adapting to the deployment requirements of the compact space within the chassis. This invention solves the technical problem in the prior art that CPU cooling systems are difficult to balance passive miniaturization and low-quality heat recovery. It improves heat dissipation efficiency while realizing waste heat power generation, and features compact structure, reliable operation and high energy utilization. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This diagram illustrates the connection relationships of the thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid provided in this embodiment of the invention.

[0031] Figure 2 This diagram illustrates the relationship between the main pipeline sections provided in this embodiment of the invention.

[0032] Figure 3 This diagram illustrates the relationship between the power regulation units provided in the embodiments of the present invention.

[0033] Figure 4 This diagram illustrates the relationship between the heat-driven capsules provided in the embodiments of the present invention.

[0034] Figure 5 This is a schematic diagram illustrating a structural design of a thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid provided in an embodiment of the present invention.

[0035] Figure 6This is a schematic diagram illustrating a structural design of a heat engine drive module provided in an embodiment of the present invention.

[0036] Figure 7 This diagram illustrates another structural design of the heat engine drive module provided in an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10. Thermal energy circulation component; 11. Thermal energy exchange module; 12. Circulation channel module; 13. Thermal energy transport module; 14. Flow auxiliary module; 20. Thermoelectric conversion component; 21. Power generation and energy storage module; 22. Heat engine drive module; 111. CPU heat-conducting base; 112. Heat-conducting medium layer; 113. Heat dissipation fins; 121. Main channel pipe section; 122. Reinforced heat transfer inner wall; 123. Flow channel seal; 131. Heat transfer oil; 132. Carbon nanotubes; 133. Nano dispersant; 141. One-way flow guide; 142. Micro pump; 211. Induction energy harvesting coil; 212. Concentrated magnetic core; 213. Power regulation unit; 214. Energy storage unit; 221. Thermal drive capsule; 222. Miniature permanent magnet. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0041] See Figures 1 to 7 The present invention provides a heat-driven heat dissipation and power generation device based on carbon nanotube doped fluid for CPU heat dissipation and waste heat conversion, including a heat energy circulation component (10) and a thermoelectric conversion component (20); the heat energy circulation component (10) is connected to the thermoelectric conversion component (20).

[0042] The thermal energy circulation assembly (10) includes a heat exchange module (11), a circulation channel module (12), a heat transport module (13), and a flow auxiliary module (14); the thermoelectric conversion assembly (20) includes a power generation and energy storage module (21) and a heat engine drive module (22); the heat exchange module (11) includes a CPU heat-conducting base (111), a heat-conducting medium layer (112), and heat dissipation fins (113); the circulation channel module (12) includes a main channel pipe section (121) and a reinforced heat transfer inner wall (122). The heat transport module (13) includes heat transfer oil (131), carbon nanotubes (132) and nano dispersant (133); the flow assist module (14) includes a unidirectional flow guide (141) to prevent backflow; the power generation and energy storage module (21) includes an induction energy harvesting coil (211), a magnetic core (212), an energy regulation unit (213) and an energy storage unit (214); the heat engine drive module (22) includes a heat drive capsule (221) and a micro permanent magnet (222).

[0043] The thermal energy circulation component (10) absorbs the heat generated by the CPU and transfers the heat to the heat engine drive module (22) through the thermal energy transport module (13). The heat drive capsule (221) deforms and increases in volume when heated, and the change in buoyancy causes the micro permanent magnet (222) to float up, thereby generating current in the power generation and energy storage module (21) by cutting the magnetic field lines.

[0044] The thermally conductive medium layer (112) is disposed between the CPU thermally conductive base (111) and the computer CPU to enhance the heat exchange between the CPU thermally conductive base (111) and the CPU.

[0045] Preferably, the CPU heat-conducting base (111) is made of copper or aluminum alloy with high thermal conductivity, and its surface in contact with the CPU is precision machined to ensure good flatness and fit.

[0046] Preferably, the thermally conductive medium layer (112) is thermally conductive silicone grease.

[0047] Preferably, the heat dissipation fins (113) are aluminum fin groups, formed by folding or inserting processes.

[0048] The circulating flow channel module (12) is located between the heat exchange module (11) and the heat transport module (13). The inner wall of the main flow channel section (121) is provided with the enhanced heat transfer inner wall (122). The main flow channel section (121) forms a closed loop. The closed loop is arranged in a vertical elliptical ring shape in spatial layout, including an ascending pipe section, a descending pipe section and a connecting elbow. The ascending pipe section contacts the CPU heat-conducting base (111) to exchange heat and absorb heat. The descending pipe section contacts the heat dissipation fins (113) to exchange heat and diffuse heat to the external atmospheric environment.

[0049] Preferably, the inner diameter of the main channel section (121) is 5~15 mm, the maximum outer diameter of the thermally driven capsule (221) in the expanded state is 0.7~0.9 times the inner diameter of the main channel section, and the minimum outer diameter in the contracted state is 0.4~0.6 times the inner diameter of the main channel section; this size ratio ensures that the thermally driven capsule (221) maintains an appropriate gap with the pipe wall when moving in the flow channel, avoiding jamming, while ensuring sufficient buoyancy driving effect.

[0050] Preferably, the surface of the enhanced heat transfer inner wall (122) is provided with a microgroove structure extending along the fluid flow direction, and the cross-section of the microgroove structure is V-shaped, trapezoidal or arc-shaped.

[0051] Preferably, in the closed loop of the vertical elliptical ring layout, the major axis of the ellipse is aligned with the height of the computer chassis, and the minor axis is aligned with the depth of the chassis; the rising pipe section is close to the CPU mounting position, and the falling pipe section is close to the cooling fan position at the rear or top of the chassis, utilizing the internal airflow of the chassis to assist in heat dissipation.

[0052] The carbon nanotubes (132) are doped in the heat-conducting oil (131); the nano-dispersant (133) is dissolved in the heat-conducting oil (131) to prevent the agglomeration of the carbon nanotubes (132); the carbon nanotubes (132) include at least one of single-walled carbon nanotubes and multi-walled carbon nanotubes.

[0053] Preferably, the carbon nanotube (132) is an oligowalled carbon nanotube or a double-walled carbon nanotube; the oligowalled carbon nanotube has 2 to 5 wall layers, and the double-walled carbon nanotube has 2 wall layers; compared with single-walled carbon nanotubes, oligowalled and double-walled carbon nanotubes have higher structural stability and better dispersion performance, and can maintain stable thermal conductivity for a long time; compared with multi-walled carbon nanotubes with more layers, their radial thermal conductivity is better, which is more conducive to forming an efficient thermal conductivity network.

[0054] The heat-driven heat dissipation and power generation device based on carbon nanotube doped fluid also includes a micropump (142); the micropump (142) is disposed in the circulation channel module (12) and is used to drive the fluid circulation in the heat energy transport module (13); the micropump (142) is for auxiliary fluid circulation and is only activated when the heat-driven heat dissipation and power generation device based on carbon nanotube doped fluid is first put into operation; the unidirectional flow guide (141) is disposed at least one upstream and downstream of the micropump (142) to prevent fluid backflow and make the heat-driven capsule (221) move in one direction.

[0055] Preferably, the unidirectional flow guide (141) is an elastic valve structure or a conical constriction structure, and the connecting elbow on the lower side is located in front of the rising pipe section and behind the falling pipe section; when the heat-driven capsule (221) is in an expanded state, its outer diameter is larger than the through hole diameter of the unidirectional flow guide (141), and it is blocked from passing through; when the heat-driven capsule (221) shrinks in volume, its outer diameter is smaller than the through hole diameter of the unidirectional flow guide (141), and it can pass through smoothly, thereby realizing unidirectional circulation.

[0056] The inductive energy harvesting coil (211) is wound around the outside of the magnetic core (212), and the micro permanent magnet (222) circulates within the fluid flow area surrounded by the magnetic core (212); the power regulation unit (213) includes at least a parallel bus, a rectifier circuit, a filter circuit and a voltage regulator circuit, used to convert the alternating current generated by the inductive energy harvesting coil (211) into stable direct current and store it in the energy storage unit (214).

[0057] Preferably, the induction energy harvesting coil (211) has 500 to 2000 turns and a wire diameter of 0.1 to 0.5 mm, and can generate an induced electromotive force of 0.5 to 3V.

[0058] Preferably, the magnetic core (212) is an open ring structure made of soft magnetic material.

[0059] Preferably, the energy storage unit (214) includes at least one of a supercapacitor and a lithium-ion battery, with a rated voltage of 3~5.0 V and a capacity of 100~1000 mAh.

[0060] The heat-driven capsule (221) includes a sealed capsule formed by a flexible deformable film; the sealed capsule is filled with a temperature-sensitive deformable material; an inert isolation layer is provided on the outer surface of the flexible deformable film; the temperature-sensitive deformable material expands in volume when heated, driving the heat-driven capsule (221) to deform; after losing heat, the heat-driven capsule (221) shrinks in volume and increases in density, sinks and resets under the action of gravity, forming a cyclic motion; the micro permanent magnet (222) is disposed inside the heat-driven capsule (221) for fixation.

[0061] Preferably, the number of the thermally driven capsules (221) is 30 to 200, arranged sequentially along the length of the main channel section; the number of the thermally driven capsules (221) is determined according to the CPU power consumption level and power generation requirements to ensure that a sufficient number of capsules are in motion during the cycle to generate a continuous and stable induced electromotive force.

[0062] Preferably, the temperature-sensitive deformable part in the heat-driven capsule (221) has a volume expansion rate of more than 50% in the temperature range of 40~80 °C.

[0063] Preferably, the micro permanent magnet (222) includes at least one of neodymium iron boron permanent magnet and samarium cobalt permanent magnet, with a maximum magnetic energy product of 10~50 MGOe.

[0064] The mass fraction of the carbon nanotubes (132) in the heat transfer oil (131) ranges from 0.5% to 3%.

[0065] Preferably, the carbon nanotube (132) has a diameter of 10~50 nm and a length of 1~10 μm.

[0066] Preferably, the nano-dispersant (133) is one or more of sodium dodecylbenzenesulfonate, polyvinylpyrrolidone, or polyethylene glycol, and the amount added is 5% to 20% of the mass of carbon nanotubes.

[0067] Preferably, the carbon nanotubes (132) need to undergo the following steps:

[0068] S1: The carbon nanotubes (132) were placed in a vacuum drying oven and dried at 90 °C for 3 hours; the dried carbon nanotubes were added to an ethanol solution containing the nano-dispersant (133); the mixture was ultrasonically dispersed at a frequency of 40 kHz for 45 minutes using an ultrasonic cleaner; subsequently, the mixture was placed in a 70 °C water bath and stirred to evaporate and remove the ethanol, thereby obtaining surface-modified carbon nanotube powder.

[0069] S2: The surface-modified carbon nanotube powder is added to the heat-conducting oil (131), and the nano-dispersant (133) is added at the same time; the high-speed shear disperser is used to shear disperse at 5000 rpm for 30 minutes, and then transferred to an ultrasonic dispersion device and ultrasonically treated at 40 kHz for 45 minutes to obtain a uniformly dispersed carbon nanotube-doped fluid.

[0070] The temperature-sensitive deformation type includes at least one of a low-boiling-point phase change working medium and an elastic metal sheet; when the temperature-sensitive deformation type is a low-boiling-point phase change working medium, it undergoes vaporization and volume expansion when heated; when the temperature-sensitive deformation type is an elastic metal sheet, it recovers from a wrinkled shape to a preset unfolded shape when heated, thereby increasing the volume of the heat-driven capsule (221).

[0071] Preferably, the low-boiling-point phase change working medium includes, but is not limited to, ethanol, acetone, or perfluorinated compounds; the elastic metal sheet is a shape memory alloy sheet, which includes, but is not limited to, nickel-titanium alloy, copper-based shape memory alloy, or iron-based shape memory alloy.

[0072] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0073] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0074] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid, characterized in that, For CPU heat dissipation and waste heat conversion, including a thermal energy circulation component (10) and a thermoelectric conversion component (20); the thermal energy circulation component (10) is connected to the thermoelectric conversion component (20); The thermal energy circulation assembly (10) includes a heat exchange module (11), a circulation channel module (12), a heat transport module (13), and a flow auxiliary module (14); the thermoelectric conversion assembly (20) includes a power generation and energy storage module (21) and a heat engine drive module (22); the heat exchange module (11) includes a CPU heat-conducting base (111), a heat-conducting medium layer (112), and heat dissipation fins (113); the circulation channel module (12) includes a main channel pipe section (121) and a reinforced heat transfer inner wall (122). The heat transport module (13) includes heat transfer oil (131), carbon nanotubes (132) and nano dispersant (133); the flow assist module (14) includes a unidirectional flow guide (141) to prevent backflow; the power generation and energy storage module (21) includes an induction energy harvesting coil (211), a magnetic core (212), an energy regulation unit (213) and an energy storage unit (214); the heat engine drive module (22) includes a heat drive capsule (221) and a micro permanent magnet (222); The thermal energy circulation component (10) absorbs the heat generated by the CPU and transfers the heat to the heat engine drive module (22) through the thermal energy transport module (13). The heat drive capsule (221) deforms and increases in volume when heated, and the change in buoyancy causes the micro permanent magnet (222) to float up, thereby generating current in the power generation and energy storage module (21) by cutting the magnetic field lines.

2. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 1, characterized in that, The thermally conductive medium layer (112) is disposed between the CPU thermally conductive base (111) and the computer CPU to enhance the heat exchange between the CPU thermally conductive base (111) and the CPU.

3. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 1, characterized in that, The circulating flow channel module (12) is located between the heat exchange module (11) and the heat transport module (13). The inner wall of the main flow channel section (121) is provided with the enhanced heat transfer inner wall (122). The main flow channel section (121) forms a closed loop. The closed loop is arranged in a vertical elliptical ring shape in spatial layout, including an ascending pipe section, a descending pipe section and a connecting elbow. The ascending pipe section contacts the CPU heat-conducting base (111) to exchange heat and absorb heat. The descending pipe section contacts the heat dissipation fins (113) to exchange heat and diffuse heat to the external atmospheric environment.

4. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 1, characterized in that, The carbon nanotubes (132) are doped in the heat-conducting oil (131); the nano-dispersant (133) is dissolved in the heat-conducting oil (131) to prevent the agglomeration of the carbon nanotubes (132); the carbon nanotubes (132) include at least one of single-walled carbon nanotubes and multi-walled carbon nanotubes.

5. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 1, characterized in that, It also includes a micropump (142); the micropump (142) is disposed in the circulation channel module (12) and is used to drive the fluid circulation in the thermal energy transport module (13); the micropump (142) is for auxiliary fluid circulation and is only activated when the thermally driven heat dissipation power generation device based on carbon nanotube doped fluid is first put into operation; the unidirectional flow guide (141) is disposed at least one upstream and downstream of the micropump (142) to prevent fluid backflow and make the thermally driven capsule (221) move in one direction.

6. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 1, characterized in that, The inductive energy harvesting coil (211) is wound around the outer layer of the magnetic core (212), and the micro permanent magnet (222) circulates within the fluid flow area surrounded by the magnetic core (212); the power regulation unit (213) includes at least a parallel bus, a rectifier circuit, a filter circuit and a voltage regulator circuit, used to convert the alternating current generated by the inductive energy harvesting coil (211) into stable direct current and store it in the energy storage unit (214).

7. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 1, characterized in that, The heat-driven capsule (221) includes a sealed capsule formed by a flexible deformable film; the sealed capsule is filled with a temperature-sensitive deformable material; an inert isolation layer is provided on the outer surface of the flexible deformable film; the temperature-sensitive deformable material expands in volume when heated, driving the heat-driven capsule (221) to deform; after losing heat, the heat-driven capsule (221) shrinks in volume and increases in density, sinks and resets under the action of gravity, forming a cyclic motion; the micro permanent magnet (222) is disposed inside the heat-driven capsule (221) for fixation.

8. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 4, characterized in that, The mass fraction of the carbon nanotubes (132) in the heat transfer oil (131) ranges from 0.5% to 3%.

9. The thermally driven heat dissipation and power generation device based on carbon nanotube-doped fluid according to claim 7, characterized in that, The temperature-sensitive deformation type includes at least one of a low-boiling-point phase change working medium and an elastic metal sheet; when the temperature-sensitive deformation type is a low-boiling-point phase change working medium, it undergoes vaporization and volume expansion when heated; when the temperature-sensitive deformation type is an elastic metal sheet, it recovers from a wrinkled shape to a preset unfolded shape when heated, thereby increasing the volume of the heat-driven capsule (221).

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