A counterflow double-channel V-shaped rib array micro-combustor and a power generation device thereof

Abstract

The application discloses a counterflow double-channel V-shaped rib array micro-combustor and a power generation device thereof, relates to the technical field of micro energy conversion, and the micro-combustor comprises a counterflow double-channel and V-shaped ribs arranged in an array in the counterflow double-channel; the counterflow double-channel is two combustion chamber channels with opposite gas inlet directions and is separated; the V-shaped ribs are arranged in a Z-shaped cycle and form a vortex disturbance region. The power generation device comprises the micro-combustor, a thermoelectric conversion module and a high-efficiency heat dissipation assembly. The application improves the initial temperature of reactants entering the combustor by arranging the counterflow double-channel, effectively reduces the heat loss in the combustion reaction, effectively guides the airflow to form a local vortex by arranging the V-shaped rib array structure, improves the mixing efficiency of fuel and air, suppresses the flame shedding and blowout phenomenon, balances the combustion reaction and anchors the flame position, provides a high-temperature stable heat source for the thermoelectric ceramic module, and meets the efficient energy supply demand under the micro power scene.

Description

Technical Field

[0001] This invention relates to the fields of micro energy conversion, micro thermoelectric systems, micro power sources, and thermal management structure design, specifically to a counter-current dual-channel V-shaped fin array micro burner and its power generation device. Background Technology

[0002] With the increasing demand for miniaturized, long-lasting, and autonomously powered devices from wearable devices, micro-sensing nodes, portable medical instruments, and unmanned systems, traditional battery-based power supply methods are gradually revealing problems such as low energy density, limited lifespan, and frequent replacements, making it difficult to meet the practical requirements of long-term, stable operation. Therefore, developing a compact, high-energy-density, stable, and micro-environmentally suitable autonomous power supply technology has become a research hotspot.

[0003] Micro-burners, capable of using liquid or gaseous fuels and possessing advantages such as high energy density and fast response speed, have become a core component in the construction of micro-power generation systems. In recent years, thermoelectric power generation technology, with its noiseless operation, absence of moving mechanical parts, and high reliability, has been widely used in continuous power supply applications at small to medium power levels. Coupled with a micro-burner, utilizing the heat generated by the combustion reaction to drive thermoelectric conversion, achieving the direct conversion of chemical energy into electrical energy, is a promising micro-energy solution. However, under microscale conditions, the combustion reaction is limited by factors such as low Reynolds number, enhanced wall heat transfer, and poor combustion stability. Traditional micro-burners face significant bottlenecks in thermal management efficiency and combustion intensity, making it difficult to provide sufficient and stable heat flow input to the thermoelectric module. Furthermore, existing micro-power generation systems suffer from dispersed structures, low thermal coupling efficiency, and low integration, hindering their widespread application in space-constrained scenarios.

[0004] Therefore, there is an urgent need to design a micro combustion-thermoelectric coupling power generation device with high heat exchange efficiency, good stable combustion performance, and compact integrated structure to meet the high-efficiency energy supply requirements in low-power scenarios. Summary of the Invention

[0005] The purpose of this invention is to provide a counter-current dual-channel V-shaped fin array micro burner and its power generation device, which solves the problems in the background art. It has a compact structure, high heat-to-electric conversion efficiency, meets the high-efficiency power supply requirements of portable small power generation devices, and is suitable for continuous power supply needs in space-constrained occasions such as unmanned nodes and remote sensing systems.

[0006] Based on the above objectives, the present invention discloses a counter-current dual-channel V-shaped fin array micro-burner, the micro-burner comprising a counter-current dual channel and V-shaped fins arranged in an array within the counter-current dual channel;

[0007] The counter-current dual channel consists of two separate combustion chamber channels with opposite air intake directions. The V-shaped ribs are arranged in a Z-shape and periodically distributed within the combustion chamber channels to form a vortex disturbance region.

[0008] Preferably, the tip of the V-shaped rib faces the air intake direction of the combustion chamber channel, and the two combustion chamber channels are separated by a partition disposed between the upper and lower walls of the micro burner.

[0009] Preferably, the combustion chamber channel is a rectangular tube, the micro burner is made of 316L stainless steel or silicon carbide, and the partition is made of the same material as the micro burner.

[0010] Preferably, the opening angle of the V-shaped rib is 30°-60°, and the ratio of the upper base to the lower base of the V-shaped rib is 1:3.

[0011] Preferably, the ratio of the rib height of the V-shaped rib to the height of the combustion chamber channel is 1:1, the ratio of the lateral spacing of the V-shaped rib to the side length of the V-shaped rib is 1:2, and the ratio of the longitudinal spacing of the V-shaped rib to the side length of the V-shaped rib is 5:3.

[0012] The present invention also provides a power generation device consisting of the above-mentioned counter-current dual-channel V-shaped fin array micro burner, thermoelectric conversion module, high-efficiency heat sink assembly and connecting wires.

[0013] Preferably, the thermoelectric conversion module is a thermoelectric ceramic module made of high-temperature thermoelectric material. The thermoelectric ceramic module includes a hot end component set in the upper layer, a thermoelectric pair array set in the middle layer, and a cold end component set in the lower layer. The bottom of the counter-current dual-channel V-shaped fin array micro burner is attached to the hot end component, and the high-efficiency heat sink component is attached to the cold end component.

[0014] Preferably, the thermocouple array comprises N-type semiconductor material and P-type semiconductor material, which are arranged alternately. Electrical connection and heat conduction path are achieved by metal welding or metallization coating. The thermoelectric potential difference is generated by temperature difference. The metal coating comprises a tungsten or molybdenum bonding layer with a thickness of 1-3 μm, a molybdenum disilicide or tungsten disilicide conductive layer with a thickness of 3-8 μm, and a rhenium or hafnium surface protective layer with a thickness of 1-3 μm, arranged from bottom to top.

[0015] Preferably, the hot-end assembly includes a hot-end ceramic substrate and a foamed metal electrode adhered to the hot-end ceramic substrate as a thermoelectric positive electrode, one side of the foamed metal electrode of the thermoelectric positive electrode being in contact with the high-temperature end of the thermoelectric material assembly; the cold-end assembly includes a cold-end ceramic substrate and a foamed metal electrode fixed to the cold-end ceramic substrate as a thermoelectric negative electrode, the foamed metal electrode of the cold-end assembly serving as a thermoelectric negative electrode and the foamed metal electrode of the hot-end assembly serving as a thermoelectric positive electrode are connected by low-temperature solder.

[0016] Preferably, a high thermal conductivity interface material is provided at the bottom contact point between the hot-end ceramic substrate and the counter-current dual-channel V-shaped fin array micro burner; a thermally conductive medium is provided at the contact point between the cold-end ceramic substrate and the high-efficiency heat sink assembly.

[0017] Therefore, the present invention employs the above-mentioned counter-current dual-channel V-shaped fin array micro-burner and its power generation device, which has the following beneficial effects:

[0018] 1. This invention utilizes a counter-flow dual-channel structure within a micro burner to achieve reverse heat exchange between exhaust and intake air. This allows for the reuse of heat energy from intake preheating and exhaust cooling, increasing intake air temperature, reducing ignition delay, and decreasing the initial energy input required for combustion. Consequently, it improves the overall thermal efficiency and combustion stability of the system. As part of the burner channel design, the counter-flow structure eliminates the need for external heat exchange equipment, resulting in a compact structure and short heat transfer path, which is beneficial for miniaturization and modular design.

[0019] 2. This invention utilizes a V-shaped fin array structure within a micro-burner to induce localized vortices, enhancing fuel / air mixing efficiency and solving the problem of difficult microscale mixing. It anchors the flame in the recirculation zone, suppressing blow-out and improving combustion stability. Optimizing fin parameters such as angle / spacing ratio balances turbulence intensity and pressure drop loss. This allows for precise control of the flow and temperature fields within the combustion zone, enhancing heat transfer efficiency, stabilizing the combustion reaction, and improving the uniformity of heat supply at the hot end. This ensures the thermoelectric module's heating surface is in a stable operating temperature range, avoiding localized overheating or hot spots, thus solving the problem of reliance on narrow channels for stable combustion and easy blow-out in existing technologies. When the V-shaped fin array is designed in conjunction with a counter-current dual-channel structure, the turbulence intensity in the heat exchange zone can be further enhanced, improving preheating efficiency and stable combustion performance, thereby forming a good heat-flow-reaction coupling within the entire system.

[0020] 3. This invention achieves efficient thermal coupling between a micro burner with a V-shaped fin array structure and a thermoelectric module. By using a hot-end ceramic substrate, a high thermal conductivity graphite sheet, and foam metal electrodes, the interfacial thermal resistance is minimized, thus optimizing the hot-end interface. The heat sink is directly attached to the cold-end ceramic substrate to maintain a high temperature difference. This realizes a heat transfer path from burner to thermoelectric module to heat sink, minimizing heat loss.

[0021] 4. This invention constructs a compact and highly integrated micro-thermoelectric power generation system by optimizing the structure and functional integration of the micro-burner, thermoelectric conversion module, and radiator unit. Each functional unit is tightly connected through a high-efficiency thermal interface material, forming a continuous top-down heat flow path, significantly reducing the overall volume while minimizing thermal resistance. While meeting the requirements of efficient thermoelectric conversion, the system also possesses excellent thermal management capabilities, stable electrical output, and environmental adaptability. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of a counter-current dual-channel V-shaped fin array micro-burner according to Embodiment 1 of the present invention;

[0023] Figure 2 This is an internal schematic diagram of a counter-current dual-channel V-shaped fin array micro-burner according to Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of the temperature change distribution inside a counter-current dual-channel V-shaped fin array micro-burner according to Embodiment 1 of the present invention;

[0025] Figure 4 This is a comparison chart of the average temperature of a counter-current dual-channel V-shaped fin array micro-burner under different inlet velocities, as shown in Embodiment 1 of the present invention.

[0026] Figure 5 This invention provides an embodiment 1 of a counter-current dual-channel V-shaped fin array micro-burner for heat release at different inlet velocities.

[0027] Figure 6 This is a schematic diagram of the power generation device of a counter-current dual-channel V-shaped fin array micro-burner according to Embodiment 2 of the present invention;

[0028] Figure 7 This is a schematic diagram of the thermoelectric ceramic module in Example 2;

[0029] Figure 8 This is a schematic diagram of the alternating arrangement of P-type and N-type semiconductors in Example 2.

[0030] Figure label:

[0031] 1. Micro-burner; 11. Counter-current dual-channel; 12. First combustion chamber channel; 13. Second combustion chamber channel; 14. V-shaped fins; 15. Baffle; 2. Thermoelectric ceramic module; 21. Hot-end ceramic substrate; 22. High thermal conductivity interface material; 23. Thermoelectric pair array; 24. P-type semiconductor; 25. N-type semiconductor; 26. Cold-end ceramic substrate; 27. Thermoelectric negative electrode; 28. Thermoelectric positive electrode; 3. High-efficiency heat sink assembly; x. Distance from the inlet to the first column of V-shaped fins; y. Distance between the wall and the V-shaped fins; l. Lateral spacing between two V-shaped fins; z. Longitudinal spacing between two V-shaped fins; p. Length of the upper base of the V-shaped fin; q. Length of the lower base of the V-shaped fin. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following description will be provided in conjunction with the accompanying drawings of the embodiments of the present invention. Figures 1 to 4 The technical solutions of the present invention have been clearly and completely described. 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.

[0033] In the description of this invention, it should be understood that the terms "center", "around", "lateral", "longitudinal", "length", "thickness", "angle", "up", "down", "left", "right", etc., which indicate the orientation or location, are limited to simplifying the description of this invention and are not specific locations or orientations. The above terms are not intended to limit this invention.

[0034] This invention discloses a counter-current dual-channel V-shaped fin array micro-burner, comprising a counter-current dual channel and V-shaped fins arranged in an array within the counter-current dual channel.

[0035] The counter-current dual-channel system consists of two separate combustion chamber channels with opposite air intake directions. The V-shaped fins are arranged in a Z-shape and periodically distributed within the combustion chamber channels, forming a vortex disturbance region.

[0036] The tips of the V-shaped ribs face the air intake direction of the combustion chamber channels. The two combustion chamber channels are separated by a partition between the upper and lower walls of the micro burner to form a heating pipe and a reaction zone. The two reaction zones are mirror-symmetrical.

[0037] The combustion chamber channel is a rectangular tube, and the micro-burner is made of 316L stainless steel or silicon carbide. The baffle is made of the same material as the micro-burner. The opening angle of the V-shaped fins is 30°-60°, and the ratio of the upper to lower bottom of the V-shaped fins is 1:3. The fuel gas enters the preheating channel through the intake channels on both sides of the combustion chamber channel. After heat exchange with the high-temperature exhaust gas, it flows into the combustion chamber. After being mixed by the swirling flow induced by the fins and the enhanced mixing in the local recirculation zone, stable combustion is achieved.

[0038] The micro-burner has an air inlet and an air outlet on both sides. The fuel is heated by the exhaust gas before entering the combustion chamber, effectively increasing the intake air temperature, shortening the ignition delay time, and improving the overall thermal efficiency. The micro-burner is suitable for liquid or gaseous fuels, with premixed methane / air or premixed hydrogen / air being preferred fuel gases.

[0039] The ratio of the rib height to the combustion chamber passage height of the V-shaped ribs is 1:1, the ratio of the transverse spacing of the V-shaped ribs to the side length of the V-shaped ribs is 1:2, and the ratio of the longitudinal spacing of the V-shaped ribs to the side length of the V-shaped ribs is 5:3.

[0040] The present invention also provides a power generation device consisting of the above-mentioned counter-current dual-channel V-shaped fin array micro burner, thermoelectric conversion module, high-efficiency heat sink assembly and connecting wires.

[0041] The thermoelectric conversion module is a thermoelectric ceramic module made of high-temperature thermoelectric materials, such as calcium cobalt oxide (Ca3Co4O9) or bismuth telluride (Bi2Te3). The thermoelectric ceramic module comprises a hot-end component in the upper layer, a thermoelectric pair array in the middle layer, and a cold-end component in the lower layer. The bottom of the counter-current dual-channel V-shaped fin array micro-burner is attached to the hot-end component, and the high-efficiency heat sink component is attached to the cold-end component.

[0042] The thermocouple array includes N-type semiconductor materials and P-type semiconductor materials, which are arranged alternately. Electrical connections and heat conduction pathways are achieved through metal welding or metallization coating, and a thermoelectric potential difference is generated by temperature difference.

[0043] The metal coating comprises, from bottom to top, a tungsten or molybdenum bonding layer with a thickness of 1-3 μm, a molybdenum disilicide or tungsten disilicide conductive layer with a thickness of 3-8 μm, and a rhenium or hafnium surface protective layer with a thickness of 1-3 μm.

[0044] The hot-end component includes a hot-end ceramic substrate and a foamed metal electrode adhered to the hot-end ceramic substrate as the positive electrode for thermoelectric power generation. The hot-end ceramic substrate is made of alumina or aluminum nitride ceramic material with high thermal conductivity. One side of the foamed metal electrode of the thermoelectric power generation positive electrode is in contact with the high-temperature end of the thermoelectric material component. The cold-end component includes a cold-end ceramic substrate and a foamed metal electrode fixed to the cold-end ceramic substrate as the negative electrode for thermoelectric power generation. The foamed metal electrode of the cold-end component as the negative electrode for thermoelectric power generation and the foamed metal electrode of the hot-end component as the positive electrode for thermoelectric power generation are connected by low-temperature solder.

[0045] A high thermal conductivity interface material is provided at the bottom of the hot-end ceramic substrate and the counter-current dual-channel V-shaped fin array micro burner. After the hot-end ceramic substrate is surface-flattened, it is in close contact with the lower wall of the micro burner through a high thermal conductivity interface material (preferably graphite sheet, tungsten foil or molybdenum foil) to form a stable and efficient thermal coupling interface, thereby realizing the heat transfer between the micro burner and the thermoelectric module.

[0046] High-efficiency heat sink components can be air-cooled or water-cooled structures. Their top surface is in close contact with the cold-end ceramic substrate through a thermally conductive medium (such as thermal grease, silicone pad, ceramic composite pad, etc.) to ensure a stable low temperature at the cold end and maintain a high temperature difference.

[0047] Example 1

[0048] like Figure 1 As shown, this embodiment provides a counter-current dual-channel V-shaped fin array micro-burner. The micro-burner 1 includes a counter-current dual-channel 11 and V-shaped fins 14 arranged periodically in a Z-shaped array within the counter-current dual-channel 11. The counter-current dual-channel 11 is divided into two combustion chamber channels by a central partition 15, namely a first combustion chamber channel 12 and a second combustion chamber channel 13. The combustion chambers are rectangular tubular, and the air intake directions in the two combustion chambers are opposite. Figure 1 The direction of the middle arrow indicates the airflow direction of the combustion gas. The tip of the V-shaped rib 14 located in the combustion chamber faces the airflow direction of the combustion gas in the combustion chamber, that is, the two reaction zones are mirror-symmetrical.

[0049] The micro-burner 1 is 20mm long, 9.9mm wide, and 4mm high. The wall thickness of the micro-burner 1 is 0.5mm, the thickness of the partition plate 15 is 0.5mm, and the V-shaped rib 14 is a triangle with an angle of 60° and a side length of 1.2mm. The ratio of the length p of the upper base to the length q of the lower base of the V-shaped rib 14 is 1:3. Figure 2 As shown, the distance x from the combustion chamber inlet to the first row of V-shaped ribs 14 is 3.5 mm, the distance y between the wall and the V-shaped ribs 14 is 0.6 mm, the lateral spacing l between the two V-shaped ribs 14 is 0.6 mm, and the longitudinal spacing z between the two V-shaped ribs 14 is 2 mm.

[0050] In this embodiment, both ends of a counter-current dual-channel V-shaped fin array micro-burner are heated. Its performance is as follows: Figure 3-5 As shown.

[0051] from Figure 3 As can be seen, the counter-current dual-channel structure can effectively increase the intake air temperature, enhance the initial combustion conditions, significantly improve the uniformity of temperature distribution, and avoid the formation of low-temperature dead zones; the V-shaped fin array achieves flame anchoring through flow disturbance and backflow effect, improving combustion stability. At an inlet velocity of 2–3 m / s, the high temperature in the main combustion zone is concentrated, and the flame structure is continuous and stable, demonstrating good combustion stability characteristics.

[0052] from Figure 4 It can be seen that as the inlet velocity increases, the average fluid temperature rises significantly, and the outer wall temperature also shows a synchronous upward trend, while the temperature difference remains stable, which helps to provide an efficient driving force for subsequent thermoelectric conversion. Compared with traditional rectangular single-channel micro-burners, this design has significantly optimized the temperature field structure and thermal coupling uniformity, resulting in higher system thermal efficiency.

[0053] from Figure 5 It can be seen that the heat release continuously increases with the inlet velocity, indicating that this embodiment can maintain efficient combustion and stable output over a wide velocity range, providing sufficient, continuous and controllable heat source input for the subsequent thermoelectric module, which greatly enhances the energy density and applicable environment range of the micro power generation system.

[0054] Example 2

[0055] like Figure 6 As shown, this embodiment provides a power generation device for a counter-current dual-channel V-shaped fin array micro-burner. The device includes a micro-burner 1, a thermoelectric ceramic module 2, and a high-efficiency heat sink 3. Thermally conductive silicone grease is used as a heat-conducting medium at the connection between the high-efficiency heat sink and the thermoelectric ceramic module 2.

[0056] Among them, such as Figure 7 As shown, the thermoelectric ceramic module 2 includes a hot-end ceramic substrate 21, a thermoelectric positive electrode 28 disposed on the hot-end ceramic substrate 21, a cold-end ceramic substrate 26, a thermoelectric negative electrode 27 disposed on the cold-end ceramic substrate 26, and a thermoelectric pair array 23. The thermoelectric pair array 23 consists of alternately distributed N-type semiconductors 25 and P-type semiconductors 24, such as... Figure 8 As shown, a graphite sheet is disposed between the hot-end ceramic substrate 21 and the micro-burner 1 as a high thermal conductivity interface material 22.

[0057] This thermoelectric ceramic module is based on the Seebeck effect; when a temperature difference exists across the ceramic material, a voltage is generated, which in turn outputs a current. This power generation device is tightly integrated with a micro-burner, a thermoelectric ceramic module, and a heat sink module. The high-temperature heat generated by the micro-burner provides a continuous heat source for the system. In this structure, the n-type and p-type semiconductor materials inside the thermoelectric module are arranged alternately, forming a dense array of thermoelectric pairs, such as... Figure 8 As shown, when a stable temperature difference exists between the two ends of the module, charge carriers (electrons or holes) diffuse within the semiconductor material due to the temperature gradient, forming a directional potential difference. This potential difference manifests as a direct current output in the external circuit, ultimately realizing the direct conversion of heat energy generated by combustion into electrical energy. The power generation of the thermoelectric ceramic module is directly proportional to the temperature difference between its two ends. The higher the combustion efficiency of the micro-burner, the more heat is provided at the hot end of the module, and the larger the temperature difference, the greater the electrical power output can be achieved.

[0058] Therefore, compared to traditional power generation methods, thermoelectric power generation requires no moving mechanical parts, resulting in a simple, stable, and reliable system structure with low noise and long lifespan. Through structural optimization, the heat flow utilization rate of the micro-burner, the thermal coupling efficiency of the thermoelectric module, and the overall energy conversion efficiency of the system are all effectively improved, significantly enhancing the application performance of thermoelectric power generation technology in micro-energy systems. This power generation device can be applied to:

[0059] 1. Power supply for intelligent buoys in Hainan's nearshore and offshore areas: Provides continuous and stable low-power power for sensor nodes, monitoring buoys, sonar base stations, etc. deployed at sea or underwater. Compared with batteries, it has the advantages of long endurance and low maintenance. It can be fully integrated into the buoy body to ensure its positioning, communication, and sensor long-term stable operation. It is especially suitable for continuous power supply at night, in rainy weather, when there is insufficient wind and light, or in extreme sea conditions.

[0060] 2. Marine rescue and emergency equipment can be integrated into miniature power generation units on marine life rafts, emergency beacons, and life jackets. Using a small amount of fuel, it can continuously power positioning devices, distress lights, or communication modules in the event of power failure, thereby enhancing the survival capabilities of personnel at sea.

[0061] 3. Submarine and buoy systems: These systems are designed for long-term floating on the sea surface or suspended underwater. The miniature combustion-thermal power generation device can serve as the main or backup power source, ensuring long-term stable operation of functions such as positioning, data acquisition, and wireless communication. They are particularly suitable for autonomous observation systems in deep-sea areas.

[0062] Therefore, this invention discloses a counter-current dual-channel V-shaped fin array micro burner and its power generation device, which has a compact structure and high thermo-electric conversion efficiency, meeting the high-efficiency power supply requirements of portable small power generation devices, and is suitable for continuous power supply needs in space-constrained occasions such as unmanned nodes and remote sensing systems.

[0063] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and does not limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A counter-current dual-channel V-shaped fin array micro-combustor, characterized in that, The micro-burner includes a counter-current dual channel and V-shaped fins arranged in an array within the counter-current dual channel; The counter-current dual channel consists of two separate combustion chamber channels with opposite air intake directions. The V-shaped ribs are arranged in a Z-shape and periodically distributed within the combustion chamber channels to form a vortex disturbance region. The tips of the V-shaped ribs face the air intake direction of the combustion chamber channel, and the two combustion chamber channels are separated by a partition disposed between the upper and lower walls of the micro burner; The opening angle of the V-shaped rib is 30°-60°, and the ratio of the upper bottom to the lower bottom of the V-shaped rib is 1:3; the ratio of the rib height of the V-shaped rib to the height of the combustion chamber channel is 1:

1.

2. The counter-current dual-channel V-shaped fin array micro-burner according to claim 1, characterized in that, The combustion chamber channel is rectangular tubular, the micro burner is made of 316L stainless steel or silicon carbide, and the partition is made of the same material as the micro burner.

3. The counter-current dual-channel V-shaped fin array micro-burner according to claim 1, characterized in that, The ratio of the lateral spacing of the V-shaped ribs to the side length of the V-shaped ribs is 1:2, and the ratio of the longitudinal spacing of the V-shaped ribs to the side length of the V-shaped ribs is 5:

3.

4. A power generation device for a counter-current dual-channel V-shaped fin array micro-burner, characterized in that, The power generation device comprises a counter-current dual-channel V-shaped fin array micro burner, a thermoelectric conversion module, a high-efficiency radiator assembly, and connecting wires as described in any one of claims 1-3.

5. The power generation device of the counter-current dual-channel V-shaped fin array micro-burner according to claim 4, characterized in that, The thermoelectric conversion module is a thermoelectric ceramic module made of high-temperature thermoelectric material. The thermoelectric ceramic module includes a hot end component set in the upper layer, a thermoelectric pair array set in the middle layer, and a cold end component set in the lower layer. The bottom of the counter-current dual-channel V-shaped fin array micro burner is attached to the hot end component, and the high-efficiency heat sink component is attached to the cold end component.

6. The power generation device of the counter-current dual-channel V-shaped fin array micro-burner according to claim 5, characterized in that, The thermocouple array includes N-type semiconductor materials and P-type semiconductor materials, which are arranged alternately. Electrical connection and heat conduction path are achieved by metal welding or metallization coating, and thermoelectric potential difference is generated by temperature difference. The metal coating comprises, from bottom to top, a tungsten or molybdenum bonding layer with a thickness of 1-3 μm, a molybdenum disilicide or tungsten disilicide conductive layer with a thickness of 3-8 μm, and a rhenium or hafnium surface protective layer with a thickness of 1-3 μm.

7. The power generation device of the counter-current dual-channel V-shaped fin array micro-burner according to claim 6, characterized in that, The hot-end assembly includes a hot-end ceramic substrate and a foamed metal electrode adhered to the hot-end ceramic substrate as a positive electrode for thermoelectric power generation. One side of the foamed metal electrode of the thermoelectric power generation positive electrode is in contact with the high-temperature end of the thermoelectric material assembly. The cold-end assembly includes a cold-end ceramic substrate and a foamed metal electrode fixed to the cold-end ceramic substrate as a negative electrode for thermoelectric power generation. The foamed metal electrode of the cold-end assembly as a negative electrode for thermoelectric power generation and the foamed metal electrode of the hot-end assembly as a positive electrode for thermoelectric power generation are connected by low-temperature solder.

8. The power generation device of the counter-current dual-channel V-shaped fin array micro-burner according to claim 7, characterized in that, A high thermal conductivity interface material is provided at the contact point between the hot-end ceramic substrate and the bottom of the counter-current dual-channel V-shaped fin array micro burner; a thermally conductive medium is provided at the contact point between the cold-end ceramic substrate and the high-efficiency heat sink assembly.

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