Heat dissipation method and system based on Tesla valve

Abstract

The invention relates to the technical field of thermal management of power devices, and discloses a heat dissipation method and system based on a Tesla valve, and the method comprises the steps: providing a heat dissipation system, pumping cooling liquid into a heat exchange assembly through a liquid supply structure, obtaining the temperature of the cooling liquid in an initial circulation state, and cooling the cooling liquid in the initial circulation state; real-time temperature values of multiple points of the heat exchange assembly are obtained respectively, whether the temperature variance is larger than a preset target threshold value or not is judged, if yes, the volume of the wing-shaped flow choking area is reduced, and if not, the volume of the wing-shaped flow choking area is increased; under the condition that the cooling requirement is high, the volume of the wing-shaped flow choking area is adjusted to be reduced, cooling liquid can rapidly flow back to the liquid supply structure to be replaced, under the condition that the cooling requirement is low, the volume of the wing-shaped flow choking area is adjusted to be increased, liquid flow circulates between the heat exchange assembly and the adjustable Tesla valve in an accelerated mode, the heat dissipation uniformity is optimized, and the heat dissipation efficiency is improved. And the effect of uniform heat dissipation can be achieved under different load conditions and under the condition that the cooling requirement is greatly changed.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management of power devices, and in particular to a heat dissipation method and system based on a Tesla valve. Background Art

[0002] At present, with the rapid development of electronic devices, power semiconductor devices and high-performance computing systems, the power consumption of equipment continues to increase, resulting in a significant increase in the heat flux density per unit volume. In order to ensure the stability and service life of the equipment, heat dissipation technology has become one of the core research directions. Traditional heat dissipation methods mainly include air cooling, liquid cooling and phase change cooling. Among them, liquid cooling has gradually become the mainstream heat dissipation solution for high power density equipment due to its higher thermal conductivity and stronger heat dissipation capacity. Liquid cooling systems usually rely on the circulation of coolant in heat exchange components (such as cold plates, microchannel radiators, etc.), take away the heat generated by the equipment by heat convection, and transfer it to the heat exchanger or radiator for heat release. However, how to improve cooling uniformity while ensuring heat dissipation efficiency and avoid local overheating has become the focus of research in the field of power electronics and thermal management. At present, liquid cooling systems achieve heat dissipation by pumping coolant and transferring heat through the contact between heat exchange components and fluid. However, in actual applications, existing liquid cooling systems usually rely on controlling the heat dissipation effect by adjusting the flow rate of the coolant. Although this can improve the heat dissipation efficiency to a certain extent, it often leads to uneven cooling and local heat accumulation when the coolant flow is insufficient, thus affecting the heat dissipation effect and the stability of the system. Especially under low load or large changes in cooling demand, the adjustment of the fluid flow rate fails to achieve true flow optimization, but is likely to cause uneven heat dissipation, increasing the energy consumption and complexity of the system.

[0003] Therefore, it is necessary to provide a heat dissipation method and system based on the Tesla valve to solve the problem that the above-mentioned liquid cooling system is prone to uneven heat dissipation when the cooling demand changes greatly. Summary of the invention

[0004] The main purpose of the present invention is to provide a heat dissipation method and system based on a Tesla valve, aiming to solve the technical problems mentioned in the above background technology.

[0005] The present invention adopts the following technical solutions: A heat dissipation method based on a Tesla valve, comprising: S100: providing a heat dissipation system, the heat dissipation system comprising a liquid supply structure, an adjustable Tesla valve and a heat exchange component, the adjustable Tesla valve comprising a liquid flow channel and a plurality of wing-shaped flow resistance areas with adjustable volumes, the output end and the return end of the liquid supply structure being respectively connected to the inlet end and the outlet end of the heat exchange component, and the adjustable Tesla valve being arranged between the inlet end and the outlet end of the heat exchange component; S200: pumping coolant into the heat exchange component through the liquid supply structure, the coolant flows along the outflow end of the heat exchange component to the return end and the liquid flow channel of the liquid supply structure after heat exchange, and flows into the wing-shaped flow blocking area through the liquid flow channel to obtain an initial circulation state; S300: Acquire the coolant temperature in the initial circulation state, and adjust the volume of the wing-shaped flow resistance area according to a preset heat dissipation strategy based on the coolant temperature; S400: respectively obtaining real-time temperature values ​​of multiple points of the heat exchange component, calculating a temperature variance according to the real-time temperature values ​​of the multiple points, and determining whether the temperature variance is greater than a preset target threshold; S500: If yes, reduce the volume of the wing-shaped flow-blocking area to speed up the return of the coolant in the heat exchange component to the liquid supply structure for replacement; if no, increase the volume of the wing-shaped flow-blocking area to speed up the circulation of the coolant between the adjustable Tesla valve and the heat exchange component to slow down the return of the coolant in the heat exchange component to the liquid supply structure.

[0006] Furthermore, the step of obtaining the coolant temperature in the initial circulation state and adjusting the volume of the wing-shaped flow resistance area according to a preset heat dissipation strategy based on the coolant temperature specifically includes: S310: Detect whether the flow rate at the output end of the liquid supply structure is equal to the flow rate at the return end of the liquid supply structure; S320: If yes, obtain the coolant temperature in the initial circulation state through a sensor, and execute the preset heat dissipation strategy; S330: When the coolant temperature is lower than an initial preset threshold, the volume of the wing-shaped choke area is controlled to be greater than or equal to fifty percent of the maximum volume of the wing-shaped choke area; when the coolant temperature is higher than the initial preset threshold, the volume of the wing-shaped choke area is controlled to be less than fifty percent of the maximum volume of the wing-shaped choke area.

[0007] Furthermore, the step of respectively obtaining the real-time temperature values ​​of multiple points of the heat exchange component and calculating the temperature variance according to the real-time temperature values ​​of the multiple points specifically includes: S410: Preset a plurality of temperature measuring points on the heat exchange component, and obtain a real-time temperature value of each temperature measuring point through a temperature sensor; S420: Calculate the average temperature of all the temperature measuring points based on the real-time temperature value of each of the temperature measuring points; S430: Subtracting the real-time temperature value of each temperature measuring point from the temperature average value to obtain a temperature deviation of each temperature measuring point; S440: Square the temperature deviations of the respective temperature measuring points and sum them up to obtain the sum of the squares of the temperature deviations of all the temperature measuring points; S450: Calculate the quotient of the sum of squares of the temperature deviation and the total number of temperature measurement points to obtain the temperature variance.

[0008] The present invention also proposes a heat dissipation system based on a Tesla valve, which adopts the heat dissipation method as described in any of the above items, including: a liquid supply structure, an adjustable Tesla valve and a heat exchange component, the adjustable Tesla valve includes a liquid flow channel and a plurality of wing-shaped flow resistance areas with adjustable volume, the output end and the return end of the liquid supply structure are respectively connected to the inlet end and the outflow end of the heat exchange component, and the adjustable Tesla valve is arranged between the inlet end and the outflow end of the heat exchange component, wherein the heat exchange component is used to be connected to a power device.

[0009] Furthermore, the adjustable Tesla valve further comprises a base and a cover, and along the length direction of the base, the liquid flow channel and the plurality of wing-shaped flow blocking areas are both provided on the upper end surface of the base, and the liquid flow channel is arranged in a Z-shape, and the plurality of wing-shaped flow blocking areas are staggeredly connected on opposite sides of the liquid flow channel; The upper end surface of the base is provided with sealing grooves along the liquid flow channel and a plurality of wing-shaped flow blocking areas, and the cover body is provided with sealing protrusions corresponding to the sealing grooves, so that the base is sealed and connected to the cover body.

[0010] Furthermore, the cover body is provided with a plurality of sliding holes corresponding to the wing-shaped flow-blocking area, and an adjustment block is slidably connected to each of the plurality of sliding holes, and the adjustment block is used to slide in and out of the wing-shaped flow-blocking area to adjust the volume of the wing-shaped flow-blocking area; Electric cylinders are arranged on opposite sides of the cover body, a driving end of the electric cylinder is connected with a push plate, and the push plate is connected with a plurality of the adjustment blocks.

[0011] Furthermore, the output end and the return end of the liquid supply structure are connected to a pump-out pipe and a return pipe respectively, a liquid pump is arranged in the pump-out pipe, and the pump-out pipe is connected to the inflow end of the heat exchange component, and the return pipe is connected to the outflow end of the heat exchange component; The inflow end and the outflow end of the heat exchange component are also connected to an inflow pipe and an outflow pipe respectively, and the inflow pipe and the outflow pipe are respectively connected to the two ends of the liquid flow channel.

[0012] Further, the wing-shaped flow blocking area includes an arc-shaped portion and a straight portion, the arc-shaped portion is connected to the straight portion, and ends of the arc-shaped portion and the straight portion that are away from each other are respectively connected to the liquid flow channel; The arc-shaped portion is close to an end of the liquid flow channel connected to the outflow pipe, and the straight portion is close to an end of the liquid flow channel connected to the inflow pipe.

[0013] Further, the heat exchange component includes a cooling plate, a cooling cavity for cooling liquid to flow is arranged in the cooling plate, a diffusion part is arranged on one side of the cooling plate, one end of the diffusion part is connected to the pump outlet pipe, the diffusion part gradually shrinks along the end away from the pump outlet pipe, and a diffusion cavity is arranged in the diffusion part, and the diffusion cavity is connected to the cooling cavity; A plurality of heat dissipation ribs are equidistantly arranged on the outer side of the diffusion part, and a plurality of the heat dissipation ribs are penetrated by reinforcement ribs, and the reinforcement ribs are fixedly connected to the diffusion part.

[0014] Furthermore, a fan is provided on one end surface of the cooling plate, a heat conducting rib is provided on a side of the fan close to the cooling plate, and the heat conducting rib is fixedly connected to the cooling plate; A conductive joint is arranged on one side of the fan, a protective frame is arranged on the outer side of the conductive joint, and the protective frame is integrally formed with the cooling plate.

[0015] Beneficial effects: In the present invention, the flow state of the coolant can be intelligently adjusted according to the real-time cooling demand through the adjustable Tesla valve, which significantly improves the working efficiency and stability of the heat dissipation system. When the cooling demand is high, the volume of the wing-shaped flow resistance area is adjusted to be reduced, so that the adjustable Tesla valve is close to the principle of a communicating vessel, and the coolant does not flow through the adjustable Tesla valve, and the coolant can quickly flow back to the liquid supply structure for replacement, which effectively speeds up the replacement speed of the coolant in the heat exchange component, thereby quickly taking away a large amount of heat; when the cooling demand is low, the volume of the wing-shaped flow resistance area is adjusted to be increased, and the coolant is accelerated in the adjustable Tesla valve, so that the liquid flow is accelerated to circulate between the heat exchange component and the adjustable Tesla valve, delaying the return of the coolant to the liquid supply structure, ensuring that the coolant in the heat exchange component can flow continuously, effectively avoiding the problem of local heat accumulation caused by too slow flow rate, optimizing the heat dissipation uniformity, and ensuring that the effect of uniform heat dissipation can be achieved under different load conditions and when the cooling demand changes greatly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the steps of a heat dissipation method based on a Tesla valve of the present invention; Figure 2 It is a schematic diagram of the overall structure of a heat dissipation system based on a Tesla valve of the present invention; Figure 3yes Figure 2 A partial enlarged view of the middle A; Figure 4 It is an overall structural diagram of another direction of a heat dissipation system based on a Tesla valve of the present invention; Figure 5 Schematic diagram of the structure of the adjustable Tesla valve in the present invention; Figure 6 Schematic diagram of the explosion structure of the adjustable Tesla valve in the present invention; in: 1. Liquid supply structure; 2. Adjustable Tesla valve; 21. Base; 211. Liquid flow channel; 212. Wing-shaped flow blocking area; 232. Arc-shaped portion; 242. Straight portion; 213. Sealing groove; 22. Cover body; 221. Sliding hole; 23. Adjustment block; 24. Electric cylinder; 25. Push plate; 3. heat exchange assembly; 31. cooling plate; 32. diffusion part; 33. heat dissipation rib; 34. reinforcement rib; 4. Pump outlet pipe; 5. Return pipe; 6. Liquid pump; 7. Inflow pipe; 8. Outflow pipe; 9. Fan; 10. Heat transfer ribs; 11. Protective frame.

[0017] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] Reference Figure 1 to Figure 2 The present invention proposes a heat dissipation method based on a Tesla valve, comprising: S100: providing a heat dissipation system, the heat dissipation system comprising a liquid supply structure 1, an adjustable Tesla valve 2 and a heat exchange component 3, the adjustable Tesla valve 2 comprising a liquid flow channel 211 and a plurality of wing-shaped flow blocking areas 212 with adjustable volumes, the output end and the return end of the liquid supply structure 1 being connected to the inlet end and the outlet end of the heat exchange component 3 respectively, and the adjustable Tesla valve 2 being arranged between the inlet end and the outlet end of the heat exchange component 3; In step S100, a heat dissipation system is provided, which includes a liquid supply structure 1, an adjustable Tesla valve 2 and a heat exchange component 3, wherein the adjustable Tesla valve 2 is composed of a liquid flow channel 211 and a plurality of wing-shaped flow resistance areas 212 with adjustable volumes, so that it can be dynamically adjusted according to the heat dissipation requirements during the flow of the fluid; at the same time, the output end and the return end of the liquid supply structure 1 are respectively connected to the inlet end and the outlet end of the heat exchange component 3, and the adjustable Tesla valve 2 is arranged between the inlet end and the outlet end of the heat exchange component 3, so that the coolant can form a closed-loop circulation flow between the heat exchange component 3 and the adjustable Tesla valve 2. It should be noted that the coolant in the present application passes through the adjustable Tesla valve 2 in a forward direction, and the whole process does not involve the coolant passing through the adjustable Tesla valve 2 in the reverse direction, that is, the outlet end of the heat exchange component 3 is connected to the input end of the adjustable Tesla valve 2, and the inlet end of the heat exchange component 3 is connected to the output end of the adjustable Tesla valve 2.

[0023] S200: Coolant is pumped into the heat exchange component 3 through the liquid supply structure 1. After heat exchange, the coolant flows along the outflow end of the heat exchange component 3 to the return end of the liquid supply structure 1 and the liquid flow channel 211, and flows into the wing-shaped flow blocking area 212 through the liquid flow channel 211 to obtain an initial circulation state. In step S200, coolant is pumped into the heat exchange component 3 through the liquid supply structure 1, so that the coolant flows through the heat exchange component 3 and exchanges heat with the surface of the high thermal power device. After absorbing the heat released by the equipment, the coolant enters the reflux end of the liquid supply structure 1 and the liquid flow channel 211 along the outflow end of the heat exchange component 3, wherein a part of the coolant directly flows back to the liquid supply structure 1, while another part of the coolant enters the liquid flow channel 211 and further flows to the wing-shaped flow resistance area 212 of the adjustable Tesla valve 2, thereby forming an initial circulation state, allowing the entire cooling system to enter a normal operating mode.

[0024] S300: Acquire the coolant temperature in the initial circulation state, and adjust the volume of the wing-shaped flow blocking area 212 according to a preset heat dissipation strategy based on the coolant temperature; In step S300, the coolant temperature in the initial circulation state is obtained, and based on the temperature value of the coolant, the volume of the wing-shaped choke area 212 is adjusted according to the preset heat dissipation strategy, so that the flow pattern of the coolant in the system can be optimized according to the actual heat dissipation requirements; at this time, through the detection of the coolant temperature, a preliminary evaluation of the overall state of the heat dissipation system can be achieved, and data support can be provided for further intelligent regulation.

[0025] S400: respectively obtaining real-time temperature values ​​of multiple points of the heat exchange component 3, calculating a temperature variance according to the real-time temperature values ​​of the multiple points, and determining whether the temperature variance is greater than a preset target threshold; In step S400, real-time temperature values ​​of multiple locations inside the heat exchange component 3 are obtained through multiple sensors, and the temperature variance is calculated based on these temperature values ​​to determine whether the temperature distribution inside the heat exchange component 3 is uniform, and further determine whether the temperature variance exceeds the preset target threshold, so that the system can grasp the thermal management status in real time, ensure that the adjustment of the coolant flow can effectively improve the uniformity of heat dissipation, and avoid local overheating problems caused by uneven cooling.

[0026] S500: If yes, reduce the volume of the wing-shaped flow blocking area 212 to speed up the return of the coolant in the heat exchange component 3 to the liquid supply structure 1 for replacement; if no, increase the volume of the wing-shaped flow blocking area 212 to speed up the circulation of the coolant between the adjustable Tesla valve 2 and the heat exchange component 3 to slow down the return of the coolant in the heat exchange component 3 to the liquid supply structure 1.

[0027] In step S500, if the calculated temperature variance is greater than the target threshold, it means that there is temperature imbalance in the heat exchange component 3. In order to speed up heat transfer and improve heat dissipation efficiency, the outflow end of the heat exchange component 3 is connected to the input end of the adjustable Tesla valve 2, and the inflow end of the heat exchange component 3 is connected to the output end of the adjustable Tesla valve 2. The system reduces the volume of the wing-shaped flow resistance area 212, so that the adjustable Tesla valve 2 approaches the principle of a communicating vessel, so that the coolant reduces the flow in the adjustable Tesla valve 2, and the coolant in the heat exchange component 3 can quickly flow back to the liquid supply structure 1 for replacement. This method can significantly improve the update rate of the coolant and speed up the speed of taking heat away from the heat exchange component 3, thereby quickly reducing the equipment temperature and optimizing the temperature uniformity. On the contrary, if the calculated temperature variance does not exceed the target threshold, it means that the temperature distribution of the heat exchange component 3 is relatively uniform. In this case, in order to further optimize the operating efficiency of the liquid cooling system, the system increases the volume of the wing-shaped flow resistance area 212, so that the liquid flow inside the adjustable Tesla valve 2 is accelerated, thereby enhancing the circulation speed of the coolant between the adjustable Tesla valve 2 and the heat exchange component 3, and to a certain extent delaying the speed of the coolant returning to the liquid supply structure 1, so that the coolant can maintain a longer flow in the heat exchange component 3, so as to avoid the problem of local heat accumulation caused by the reduction of flow rate, and further optimize the heat dissipation uniformity, so as to ensure that the equipment can achieve stable and efficient thermal management effects under different load conditions.

[0028] In summary, the adjustable Tesla valve 2 can intelligently adjust the flow state of the coolant according to the real-time cooling demand, significantly improving the working efficiency and stability of the heat dissipation system. When the cooling demand is high, the volume of the wing-shaped flow blockage area 212 is adjusted to be reduced, so that the adjustable Tesla valve 2 is close to the principle of a communicating vessel, and the coolant does not flow through the adjustable Tesla valve 2, and the coolant can quickly flow back to the liquid supply structure 1 for replacement, effectively accelerating the replacement speed of the coolant in the heat exchange component 3, thereby quickly taking away a large amount of heat; when the cooling demand is low, the volume of the wing-shaped flow blockage area 212 is adjusted to be increased, and the coolant is accelerated in the adjustable Tesla valve 2, so that the liquid flow is accelerated between the heat exchange component 3 and the adjustable Tesla valve 2, delaying the return of the coolant to the liquid supply structure 1, ensuring that the coolant in the heat exchange component 3 can flow continuously, effectively avoiding the problem of local heat accumulation caused by too slow flow rate, optimizing the heat dissipation uniformity, and ensuring that the effect of uniform heat dissipation can be achieved under different load conditions and when the cooling demand changes greatly.

[0029] In one embodiment, the step of obtaining the coolant temperature in the initial circulation state and adjusting the volume of the wing-shaped flow blocking area 212 according to a preset heat dissipation strategy based on the coolant temperature specifically includes: S310: Detect whether the flow rate at the output end of the liquid supply structure 1 is equal to the flow rate at the return end of the liquid supply structure 1; S320: If yes, obtain the coolant temperature in the initial circulation state through a sensor, and execute the preset heat dissipation strategy; S330: When the coolant temperature is lower than the initial preset threshold, the volume of the wing-shaped baffle area 212 is controlled to be greater than or equal to fifty percent of the maximum volume of the wing-shaped baffle area 212; when the coolant temperature is higher than the initial preset threshold, the volume of the wing-shaped baffle area 212 is controlled to be less than fifty percent of the maximum volume of the wing-shaped baffle area 212.

[0030] In step S310, it is detected whether the output flow of the liquid supply structure 1 is equal to the return flow to ensure the balance of the liquid flow in the circulation system, thereby avoiding the influence of the effective flow of the coolant and the heat exchange efficiency due to the flow imbalance. If the output flow is equal to the return flow, it indicates that the circulation state of the coolant in the whole system is normal, and the next step is entered; otherwise, the system may be abnormal and the system flow needs to be adjusted.

[0031] In step S320, the flow balance is confirmed and the coolant temperature in the initial circulation state is obtained through the sensor. This temperature data will become an important basis for subsequent adjustment of the volume of the wing-shaped flow resistance area 212. The system further adjusts the operating state of the cooling system according to the obtained coolant temperature and executes the preset cooling strategy.

[0032] In step S330, when it is detected that the temperature of the coolant is lower than the initial preset threshold, the volume of the wing-shaped choke area 212 is controlled to be greater than or equal to 50% of the maximum volume of the wing-shaped choke area 212. At this time, the reflux to the liquid supply structure 1 is delayed, so that the coolant can flow in the heat exchange component 3 for a longer time, increase the chance of heat exchange, and further optimize the heat dissipation effect. When the coolant temperature is higher than the initial preset threshold, the volume of the wing-shaped choke area 212 is controlled to be less than 50% of the maximum volume of the wing-shaped choke area 212. In this case, the adjustable Tesla valve 2 is close to the principle of a communicating vessel, so that the coolant can quickly flow back to the liquid supply structure 1 for replacement, so as to accelerate the efficiency of heat removal, ensure that the cooling demand is met, and avoid overheating. In summary, each step achieves initial heat dissipation of the system through fuzzy control.

[0033] In one example, the step of respectively obtaining the real-time temperature values ​​of multiple points of the heat exchange component 3 and calculating the temperature variance according to the real-time temperature values ​​of the multiple points specifically includes: S410: Preset a plurality of temperature measuring points on the heat exchange component 3, and obtain the real-time temperature value of each temperature measuring point through a temperature sensor; S420: Calculate the average temperature of all the temperature measuring points based on the real-time temperature value of each of the temperature measuring points; S430: Subtracting the real-time temperature value of each temperature measuring point from the temperature average value to obtain a temperature deviation of each temperature measuring point; S440: Square the temperature deviations of the respective temperature measuring points and sum them up to obtain the sum of the squares of the temperature deviations of all the temperature measuring points; S450: Calculate the quotient of the sum of squares of the temperature deviation and the total number of temperature measurement points to obtain the temperature variance.

[0034] In the above embodiment, multiple temperature measuring points are preset on the heat exchange component 3, and the real-time temperature value of each temperature measuring point is collected by using a temperature sensor, so as to fully reflect the temperature distribution inside the heat exchange component 3. After obtaining the temperature data of all temperature measuring points, the average value of these temperature values ​​is first calculated as a benchmark for measuring the overall temperature level. Then, the real-time temperature value of each temperature measuring point is compared with the calculated temperature average value, and the temperature deviation of each temperature measuring point is obtained to reflect the temperature change of each area. Since the temperature deviation may have positive and negative values, in order to avoid the influence of mutual cancellation, the temperature deviation of each temperature measuring point is squared, and the squares of the deviations of all temperature measuring points are accumulated to obtain the sum of the squares of the temperature deviations.

[0035] On this basis, in order to obtain the uniformity index of the temperature distribution in the heat exchange component 3, the sum of the squares of the temperature deviations is divided by the total number of temperature measurement points to calculate the temperature variance. The temperature variance can intuitively reflect the temperature uniformity inside the heat exchange component 3. The smaller the value, the more uniform the temperature distribution and the more ideal the cooling effect; the larger the value, the greater the temperature gradient, which may cause local heat accumulation and affect the heat dissipation performance. Through the above processing, the temperature changes of the heat exchange component 3 can be monitored in real time, and accurate data support can be provided for the subsequent intelligent adjustment of the coolant flow state, thereby optimizing the overall heat dissipation effect and avoiding the occurrence of local overheating.

[0036] refer to Figure 2 and Figure 4 , Figure The present invention also proposes a heat dissipation system based on a Tesla valve, adopting the heat dissipation method as described in any of the above items, including: a liquid supply structure 1, an adjustable Tesla valve 2 and a heat exchange component 3, the adjustable Tesla valve 2 includes a liquid flow channel 211 and a plurality of wing-shaped flow resistance areas 212 with adjustable volumes, the output end and the return end of the liquid supply structure 1 are respectively connected to the inlet end and the outflow end of the heat exchange component 3, the adjustable Tesla valve 2 is arranged between the inlet end and the outflow end of the heat exchange component 3, wherein the heat exchange component 3 is used to be connected to a power device.

[0037] In the above embodiment, the heat dissipation system based on the Tesla valve includes a liquid supply structure 1, an adjustable Tesla valve 2 and a heat exchange component 3. The liquid supply structure 1 is used to provide coolant to the heat dissipation system, and its output end and return end are respectively connected to the inlet end and the outlet end of the heat exchange component 3 to ensure that the coolant can flow smoothly into and out of the heat exchange component 3. The adjustable Tesla valve 2 is arranged between the inlet end and the outlet end of the heat exchange component 3, and has a liquid flow channel 211 and a plurality of wing-shaped flow resistance areas 212 with adjustable volumes, which can intelligently adjust the flow state of the coolant according to the real-time temperature change and heat dissipation requirements. Further, the outlet end of the heat exchange component 3 is connected to the input end of the adjustable Tesla valve 2, and the inlet end of the heat exchange component 3 is connected to the output end of the adjustable Tesla valve 2, that is, in the adjustable Tesla valve 2, the outflow end of the heat exchange component 3 flows to the inflow end of the heat exchange component 3, which is the positive flow direction of the adjustable Tesla valve 2. Specifically, the volume of the wing-shaped choke area 212 of the Tesla valve can be dynamically adjusted according to the temperature change of the coolant to achieve efficient heat conduction and uniform heat dissipation.

[0038] The heat exchange component 3 is used to connect with the power device and take away the heat transferred from the power device through the coolant, thereby effectively reducing the temperature of the power device and ensuring its stable operation.

[0039] refer to Figure 2 , Figure 5 and Figure 6 In one embodiment, the adjustable Tesla valve 2 further includes a base 21 and a cover 22. Along the length direction of the base 21, the liquid flow channel 211 and the plurality of wing-shaped flow blocking areas 212 are both provided on the upper end surface of the base 21, and the liquid flow channel 211 is arranged in a Z-shape, and the plurality of wing-shaped flow blocking areas 212 are staggeredly connected on opposite sides of the liquid flow channel 211; The upper end surface of the base 21 is provided with a sealing groove 213 along the liquid flow channel 211 and a plurality of wing-shaped flow blocking areas 212 , and the cover body 22 is provided with a sealing protrusion corresponding to the sealing groove 213 , so that the base 21 and the cover body 22 are sealed and connected.

[0040] In the above embodiment, the adjustable Tesla valve 2 is composed of a base 21 and a cover 22. Structurally, along the length direction of the base 21, the liquid flow channel 211 and a plurality of wing-shaped flow blocking areas 212 are all opened on the upper end surface of the base 21. The liquid flow channel 211 is arranged in a Z-shape, and the coolant will experience multiple turns when flowing through. The combination of the wing-shaped flow blocking areas 212 can add a certain acceleration effect to the liquid flow. At the same time, the wing-shaped flow blocking areas 212 are staggered and connected on opposite sides of the liquid flow channel 211 to enhance the disturbance effect of the liquid flow, avoid the formation of dead zones in the liquid flow, make the flow more uniform and stable, and ensure the flow efficiency of the coolant.

[0041] The upper end surface of the base 21 is provided with a sealing groove 213 along the liquid flow channel 211 and the wing-shaped flow blocking area 212, and the cover body 22 is provided with a matching sealing protrusion to ensure a sealed connection between the base 21 and the cover body 22, effectively avoiding possible leakage of the coolant during the flow process.

[0042] refer to Figure 6 In one embodiment, the cover body 22 is provided with a plurality of sliding holes 221 corresponding to the wing-shaped flow blocking area 212, and an adjustment block 23 is slidably connected to each of the plurality of sliding holes 221, and the adjustment block 23 is used to slide in and out of the wing-shaped flow blocking area 212 to adjust the volume of the wing-shaped flow blocking area 212; Electric cylinders 24 are disposed on opposite sides of the cover body 22 . A driving end of the electric cylinder 24 is connected to a push plate 25 . The push plate 25 is connected to a plurality of the adjustment blocks 23 .

[0043] In the above embodiment, the cover body 22 is provided with a plurality of sliding holes 221 corresponding to the wing-shaped flow blocking area 212, and an adjusting block 23 is slidably connected in each sliding hole 221. The adjusting block 23 is used to adjust the volume of the wing-shaped flow blocking area 212 by sliding in and out of the wing-shaped flow blocking area 212, thereby controlling the flow path and flow rate of the fluid, and can accurately control the volume of the wing-shaped flow blocking area 212 according to actual heat dissipation requirements, thereby adjusting the resistance and flow state of the fluid, and improving the flexibility and accuracy of the fluid flow.

[0044] In order to achieve precise movement of the adjustment block 23, electric cylinders 24 are arranged on opposite sides of the cover body 22. Specifically, a mounting position is opened at the top of the cover body 22, and the electric cylinder 24 is installed in the mounting position and fixed by interference fit. The driving end of the electric cylinder 24 is connected to a push plate 25, and the push plate 25 is connected to multiple adjustment blocks 23 to ensure the synchronous adjustment of each adjustment block 23. As a driving device, the electric cylinder 24 can accurately adjust the position of the push plate 25 according to the external control signal, so that the adjustment block 23 moves smoothly in the sliding hole 221. Through this electrically controlled adjustment method, the entire system can quickly respond to changes in the flow demand of the coolant, and automatically adjust the volume of the wing-shaped flow blocking area 212 according to temperature or load changes, thereby achieving more efficient heat dissipation and fluid control.

[0045] refer to Figure 2 and Figure 4 In one embodiment, the output end and the return end of the liquid supply structure 1 are respectively connected to a pump-out pipe 4 and a return pipe 5, a liquid pump 6 is provided in the pump-out pipe 4, and the pump-out pipe 4 is connected to the inflow end of the heat exchange component 3, and the return pipe 5 is connected to the outflow end of the heat exchange component 3; The inflow end and the outflow end of the heat exchange component 3 are also connected to an inflow pipe 7 and an outflow pipe 8 respectively, and the inflow pipe 7 and the outflow pipe 8 are respectively connected to the two ends of the liquid flow channel 211.

[0046] In the above embodiment, the output end and the return end of the liquid supply structure 1 are connected to the pump-out pipe 4 and the return pipe 5, respectively. The pump-out pipe 4 is provided with a liquid pump 6, and the function of the liquid pump 6 is to output the coolant from the liquid supply structure 1 and transport it to the inlet end of the heat exchange component 3 through the pump-out pipe 4, so as to ensure that the coolant can stably and have sufficient flow to enter the heat exchange component 3 for heat exchange. The return pipe 5 is connected to the outflow end of the heat exchange component 3, and is responsible for bringing the coolant from the heat exchange component 3 back to the liquid supply structure 1, and circulating through the return pipe 5.

[0047] The inflow end and outflow end of the heat exchange component 3 are respectively connected to the inflow pipe 7 and the outflow pipe 8, which are respectively connected to the two ends of the liquid flow channel 211. In particular, the function of the inflow pipe 7 and the outflow pipe 8 connected to the liquid flow channel 211 is different from the connection between the heat exchange component 3 and the liquid supply structure 1. The inflow pipe 7 and the outflow pipe 8 are connected to the liquid flow channel 211 to form a special regulating flow channel to realize the main control logic in the present invention. In addition, the connection diameter of the heat exchange component 3 and the return pipe 5 is smaller than the connection diameter of the heat exchange component 3 through the outflow pipe 8 and the liquid flow channel 211, thereby playing a role in assisting the control cycle.

[0048] refer to Figure 6 In one embodiment, the wing-shaped flow blocking area 212 includes an arc portion 232 and a straight portion 242, the arc portion 232 is connected to the straight portion 242, and the ends of the arc portion 232 and the straight portion 242 that are away from each other are respectively connected to the liquid flow channel 211; The arc portion 232 is close to an end of the liquid flow channel 211 connected to the outflow pipe 8 , and the straight portion 242 is close to an end of the liquid flow channel 211 connected to the inflow pipe 7 .

[0049] In the above embodiment, the wing-shaped flow blocking area 212 is composed of an arc portion 232 and a straight portion 242, and the arc portion 232 and the straight portion 242 are connected seamlessly, and their ends away from each other are respectively connected to the liquid flow channel 211. In the length direction of the liquid flow channel 211, the arc portion 232 is close to the end of the liquid flow channel 211 connected to the outflow pipe 8, and the straight portion 242 is close to the end of the liquid flow channel 211 connected to the inflow pipe 7. When the coolant flows in the liquid flow channel 211, and the volume of the wing-shaped flow blocking area 212 is not zero, the coolant flows out from the straight portion 242 after entering the arc portion 232, thereby pressurizing and accelerating the coolant in the liquid flow channel 211 to a certain extent. Further, when the volume of the wing-shaped flow blocking area 212 is not zero, the coolant circulation between the adjustable Tesla valve 2 and the heat exchange component 3 is accelerated, and the coolant in the heat exchange component 3 is slowed down to flow back to the liquid supply structure 1.

[0050] refer to Figure 2 and Figure 3 In one embodiment, the heat exchange component 3 includes a cooling plate 31, a cooling cavity for coolant to flow is provided in the cooling plate 31, a diffusion portion 32 is provided on one side of the cooling plate 31, one end of the diffusion portion 32 is connected to the pump-out pipe 4, the diffusion portion 32 gradually shrinks along the end away from the pump-out pipe 4, and a diffusion cavity is provided in the diffusion portion 32, and the diffusion cavity is connected to the cooling cavity; A plurality of heat dissipation ribs 33 are equidistantly arranged on the outer side of the diffusion portion 32 . A plurality of heat dissipation ribs 33 are penetrated by reinforcement ribs 34 , and the reinforcement ribs 34 are fixedly connected to the diffusion portion 32 .

[0051] In the above embodiment, the heat exchange component 3 includes a cooling plate 31, and a cooling cavity for the flow of coolant is arranged inside the cooling plate 31. The cooling cavity can accommodate and guide the flow of coolant to achieve heat transfer with the heat exchange surface, help take away the heat inside the device, and thus reduce the temperature of the device. A diffusion part 32 is arranged on one side of the cooling plate 31. The function of the diffusion part 32 is to evenly distribute the coolant flowing out of the pump-out pipe 4 into the cooling cavity to ensure that the coolant can fully contact the surface of the cooling plate 31, thereby improving the heat exchange efficiency.

[0052] One end of the diffuser 32 is connected to the pump outlet pipe 4, and the coolant enters the diffuser 32 through the pump outlet pipe 4. The diffuser 32 gradually contracts along the end away from the pump outlet pipe 4, which helps to reduce the diffusion of the liquid flow, so that the coolant is evenly diffused in the diffusion cavity, ensuring that the coolant can smoothly enter the cooling cavity, reducing the local flow velocity difference, and avoiding the generation of eddy currents or uneven flow.

[0053] A diffusion cavity is provided in the diffusion part 32, and the diffusion cavity is connected to the cooling cavity, so that the coolant can be fully diffused before entering the cooling cavity, and the flow uniformity of the liquid can be improved, thereby improving the heat dissipation performance. A number of heat dissipation ribs 33 are equidistantly provided on the outside of the diffusion part 32, which increases the surface area of ​​the heat exchange component 3 and effectively enhances the heat dissipation capacity. The heat dissipation ribs 33 are also penetrated by reinforcing ribs 34, which play a role in enhancing the structural strength of the heat dissipation ribs 33, ensuring that the heat dissipation ribs 33 maintain stability during long-term operation, and can more effectively withstand the pressure generated by the fluid flow and the impact of external forces.

[0054] refer to Figure 4 In one embodiment, a fan 9 is disposed on one end surface of the cooling plate 31, and a heat conducting rib 10 is disposed on a side of the fan 9 close to the cooling plate 31, and the heat conducting rib 10 is fixedly connected to the cooling plate 31; A conductive joint is disposed on one side of the fan 9 , a protective frame 11 is disposed on the outer side of the conductive joint, and the protective frame 11 is integrally formed with the cooling plate 31 .

[0055] In the above embodiment, a fan 9 is provided on one end face of the cooling plate 31, specifically, on the end face facing away from the power device. The fan 9 helps the cooling plate 31 to dissipate heat more efficiently by forcing air to flow. A heat-conducting rib 10 is provided on the side of the fan 9 close to the cooling plate 31, specifically between the fan 9 and the cooling plate 31. The heat-conducting rib 10 is fixedly connected to the cooling plate 31. By increasing the heat conduction area between the fan 9 and the cooling plate 31, the fan 9 is helped to take away the heat absorbed by the cooling plate 31 more effectively, thereby enhancing the heat dissipation effect. The heat-conducting rib 10, through its larger contact area, enables the heat of the cooling plate 31 to be transferred to the fan 9 more quickly, thereby improving the cooling efficiency.

[0056] In addition, a conductive connector is provided on one side of the fan 9, which is responsible for providing power to the fan 9 to ensure that the fan 9 can operate normally. In order to ensure the safety of the electrical connection of the fan 9, a protective frame 11 is provided on the outside of the conductive connector, which protects the conductive connector from external physical damage and prevents short circuits or other electrical faults. Furthermore, the protective frame 11 is integrally formed with the cooling plate 31, and no additional assembly steps are required, thereby improving the stability and strength of the overall structure.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat dissipation method based on a Tesla valve, characterized in that: include: S100: providing a heat dissipation system, the heat dissipation system comprising a liquid supply structure, an adjustable Tesla valve and a heat exchange component, the adjustable Tesla valve comprising a liquid flow channel and a plurality of wing-shaped flow resistance areas with adjustable volumes, the output end and the return end of the liquid supply structure being respectively connected to the inlet end and the outlet end of the heat exchange component, and the adjustable Tesla valve being arranged between the inlet end and the outlet end of the heat exchange component; S200: pumping coolant into the heat exchange component through the liquid supply structure, the coolant flows along the outflow end of the heat exchange component to the return end and the liquid flow channel of the liquid supply structure after heat exchange, and flows into the wing-shaped flow blocking area through the liquid flow channel to obtain an initial circulation state; S300: Acquire the coolant temperature in the initial circulation state, and adjust the volume of the wing-shaped flow resistance area according to a preset heat dissipation strategy based on the coolant temperature; S400: respectively obtaining real-time temperature values ​​of multiple points of the heat exchange component, calculating a temperature variance according to the real-time temperature values ​​of the multiple points, and determining whether the temperature variance is greater than a preset target threshold; S500: If yes, reduce the volume of the wing-shaped flow-blocking area to speed up the return of the coolant in the heat exchange component to the liquid supply structure for replacement; if no, increase the volume of the wing-shaped flow-blocking area to speed up the circulation of the coolant between the adjustable Tesla valve and the heat exchange component to slow down the return of the coolant in the heat exchange component to the liquid supply structure.

2. A heat dissipation method based on a Tesla valve according to claim 1, characterized in that: The step of obtaining the coolant temperature in the initial circulation state and adjusting the volume of the wing-shaped flow blocking area according to a preset heat dissipation strategy based on the coolant temperature specifically includes: S310: Detect whether the flow rate at the output end of the liquid supply structure is equal to the flow rate at the return end of the liquid supply structure; S320: If yes, obtain the coolant temperature in the initial circulation state through a sensor, and execute the preset heat dissipation strategy; S330: When the coolant temperature is lower than an initial preset threshold, the volume of the wing-shaped choke area is controlled to be greater than or equal to fifty percent of the maximum volume of the wing-shaped choke area; when the coolant temperature is higher than the initial preset threshold, the volume of the wing-shaped choke area is controlled to be less than fifty percent of the maximum volume of the wing-shaped choke area.

3. The heat dissipation method based on Tesla valve according to claim 1, characterized in that: The step of respectively obtaining the real-time temperature values ​​of multiple points of the heat exchange component and calculating the temperature variance according to the real-time temperature values ​​of the multiple points specifically includes: S410: Preset a plurality of temperature measuring points on the heat exchange component, and obtain a real-time temperature value of each temperature measuring point through a temperature sensor; S420: Calculate the average temperature of all the temperature measuring points based on the real-time temperature value of each of the temperature measuring points; S430: Subtracting the real-time temperature value of each temperature measuring point from the temperature average value to obtain a temperature deviation of each temperature measuring point; S440: Square the temperature deviations of the respective temperature measuring points and sum them up to obtain the sum of the squares of the temperature deviations of all the temperature measuring points; S450: Calculate the quotient of the sum of squares of the temperature deviation and the total number of temperature measurement points to obtain the temperature variance.

4. A heat dissipation system based on a Tesla valve, characterized in that: A heat dissipation method according to any one of claims 1 to 3, comprising a liquid supply structure (1), an adjustable Tesla valve (2) and a heat exchange component (3), wherein the adjustable Tesla valve (2) comprises a liquid flow channel (211) and a plurality of wing-shaped flow resistance areas (212) with adjustable volumes, wherein the output end and the return end of the liquid supply structure (1) are respectively connected to the inlet end and the outlet end of the heat exchange component (3), and the adjustable Tesla valve (2) is arranged between the inlet end and the outlet end of the heat exchange component (3), wherein the heat exchange component (3) is used to be connected to a power device.

5. A heat dissipation system based on a Tesla valve according to claim 4, characterized in that: The adjustable Tesla valve (2) further comprises a base (21) and a cover (22); along the length direction of the base (21), the liquid flow channel (211) and the plurality of wing-shaped flow blocking areas (212) are both provided on the upper end surface of the base (21); the liquid flow channel (211) is arranged in a Z-shape, and the plurality of wing-shaped flow blocking areas (212) are staggeredly connected on opposite sides of the liquid flow channel (211); The upper end surface of the base (21) is provided with a sealing groove (213) along the liquid flow channel (211) and a plurality of wing-shaped flow blocking areas (212), and the cover body (22) is provided with a sealing protrusion corresponding to the sealing groove (213), so that the base (21) and the cover body (22) are sealed and connected.

6. A heat dissipation system based on a Tesla valve according to claim 5, characterized in that: The cover body (22) is provided with a plurality of sliding holes (221) corresponding to the wing-shaped flow-blocking area (212); an adjustment block (23) is slidably connected to each of the plurality of sliding holes (221); the adjustment block (23) is used to slide in and out of the wing-shaped flow-blocking area (212) so as to adjust the volume of the wing-shaped flow-blocking area (212); Electric cylinders (24) are arranged on opposite sides of the cover body (22); a driving end of the electric cylinder (24) is connected to a push plate (25); and the push plate (25) is connected to a plurality of the adjustment blocks (23).

7. A heat dissipation system based on a Tesla valve according to claim 5, characterized in that: The output end and the return end of the liquid supply structure (1) are respectively connected to a pump-out pipe (4) and a return pipe (5); a liquid pump (6) is arranged in the pump-out pipe (4); the pump-out pipe (4) is connected to the inflow end of the heat exchange component (3); and the return pipe (5) is connected to the outflow end of the heat exchange component (3); The inflow end and the outflow end of the heat exchange component (3) are also respectively connected to an inflow pipe (7) and an outflow pipe (8), and the inflow pipe (7) and the outflow pipe (8) are respectively connected to the two ends of the liquid flow channel (211).

8. A heat dissipation system based on a Tesla valve according to claim 7, characterized in that: The wing-shaped flow blocking area (212) comprises an arc-shaped portion (232) and a straight portion (242), the arc-shaped portion (232) is connected to the straight portion (242), and ends of the arc-shaped portion (232) and the straight portion (242) that are away from each other are respectively connected to the liquid flow channel (211); The arc-shaped portion (232) is close to an end of the liquid flow channel (211) connected to the outflow pipe (8), and the straight portion (242) is close to an end of the liquid flow channel (211) connected to the inflow pipe (7).

9. A heat dissipation system based on a Tesla valve according to claim 7, characterized in that: The heat exchange component (3) comprises a cooling plate (31), a cooling cavity for cooling liquid to flow is arranged in the cooling plate (31), a diffusion portion (32) is arranged on one side of the cooling plate (31), one end of the diffusion portion (32) is connected to the pump outlet pipe (4), the diffusion portion (32) gradually shrinks along the end away from the pump outlet pipe (4), and a diffusion cavity is arranged in the diffusion portion (32), and the diffusion cavity is connected to the cooling cavity; A plurality of heat dissipation ribs (33) are equidistantly arranged on the outside of the diffusion portion (32), a plurality of the heat dissipation ribs (33) are penetrated by reinforcement ribs (34), and the reinforcement ribs (34) are fixedly connected to the diffusion portion (32).

10. A heat dissipation system based on a Tesla valve according to claim 9, characterized in that: A fan (9) is provided on one end surface of the cooling plate (31), a heat conducting rib (10) is provided on a side of the fan (9) close to the cooling plate (31), and the heat conducting rib (10) is fixedly connected to the cooling plate (31); A conductive joint is provided on one side of the fan (9), a protective frame (11) is provided on the outer side of the conductive joint, and the protective frame (11) is integrally formed with the cooling plate (31).

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