Intelligent opening and closing type temperature control heat dissipation device design and method thereof

Abstract

The application discloses a design and a method of an intelligent opening and closing type temperature control heat dissipation device, and belongs to the technical field of heat dissipation equipment. The heat dissipation device innovatively combines the shape memory effect and superelasticity of a nickel-titanium high-temperature alloy, simulates the folding and unfolding principle of a folding fan, realizes automatic adjustment of the opening and closing state of the fan blade with temperature change, and further accurately adjusts and controls the heat dissipation capacity. In a low-temperature environment, the fan blade remains closed, reducing unnecessary heat loss; in a high-temperature environment, the fan blade is automatically opened, the heat dissipation effect is strengthened, and it is ensured that the equipment always stably operates in a suitable temperature range, and the heat dissipation device has the remarkable advantages of ingenious structure, accurate temperature control, energy saving and high efficiency.

Description

[0001] This invention relates to the field of heat dissipation equipment technology, specifically to the design and temperature control method of an intelligent opening and closing heat dissipation device inspired by a folding fan structure and utilizing the properties of nickel-titanium alloy to achieve adaptive temperature regulation. Background Technology

[0002] In numerous fields such as electronic equipment and mechanical devices, heat dissipation performance is a core element in ensuring the stable and reliable operation of equipment. Traditional heat dissipation devices are mainly divided into two categories: forced cooling with fans and passive heat sinks. Forced cooling fans need to run continuously, which not only consumes a lot of energy but also causes unnecessary energy waste in low-temperature environments. Passive heat sinks have a fixed heat dissipation capacity and cannot be dynamically adjusted according to temperature changes, often failing to meet the heat dissipation requirements when the equipment is operating at high temperatures. Therefore, developing a heat dissipation device that can automatically adjust its heat dissipation capacity according to temperature has become an urgent need in the industry. Summary of the Invention

[0003] The core objective of this invention is to provide a design and method for an intelligent openable and closed temperature-controlled heat dissipation device. The core idea is to utilize the shape memory effect and superelasticity of nickel-titanium high-temperature alloy, combined with the folding and unfolding principle of a folding fan, to achieve automatic temperature-controlled opening and closing of the fan blades of the heat dissipation device, ultimately achieving the goal of energy-saving and efficient heat dissipation, and effectively solving the drawbacks of traditional heat dissipation devices.

[0004] According to the technical solution of the intelligent opening and closing temperature control heat dissipation device provided by the present invention, the structure design of the nickel-titanium alloy temperature control heat dissipation device inspired by the folding fan structure mainly consists of a square mounting base, a top cover, a fan blade assembly, a central support rod, and nickel-titanium high-temperature alloy rods.

[0005] The square mounting base is used to securely install the heat dissipation device on the target equipment. It has pre-drilled mounting holes at its four corners to facilitate installation with bolts or other fasteners, providing a stable mounting foundation for the entire heat dissipation unit.

[0006] The fan blade assembly is evenly distributed radially around a central axis. The fan blades can rotate flexibly around the central axis, changing the heat dissipation area through opening and closing actions. The fan blade assembly is composed of multiple arc-shaped fan blades spliced ​​together and connected to the central axis of the square mounting base using a folding fan-type hinge method. The fan blades are connected to each other through flexible nickel-titanium alloy connectors to achieve synchronous opening and closing, ensuring consistent action.

[0007] The aforementioned nickel-titanium superalloy rod and fan blade assembly employ a linked design, and the nickel-titanium alloy with a phase transformation temperature range of 60°C-80°C is prepared using additive manufacturing technology. This alloy undergoes a reversible phase transformation from martensite to austenite upon temperature changes, accompanied by significant shape changes and phase transformation recovery stress. Utilizing this characteristic, the deformation of the nickel-titanium superalloy rod during temperature changes can be converted into fan blade rotation through the linked structure, achieving fan blade opening and closing. Simultaneously, by optimizing the linked structure design, it is ensured that small-amplitude deformations of the nickel-titanium superalloy rod can be converted into sufficient opening and closing angle changes in the fan blade assembly, effectively adjusting the heat dissipation area.

[0008] According to the technical solution of the intelligent openable and closed temperature control heat dissipation device provided by the present invention, the temperature control method is mainly divided into two working modes: low temperature state and high temperature state.

[0009] When the intelligent openable nickel-titanium alloy temperature-controlled radiator operates at low temperatures (when the ambient temperature is below the austenite transformation temperature of the nickel-titanium high-temperature alloy rod), As At that time, the nickel-titanium high-temperature alloy rods are in their initial, undeformed state. Under the constraint of the structure, the fan blade assembly remains closed. At this time, the airflow area is small and the heat dissipation capacity is weak, which can avoid unnecessary heat loss from the equipment in low-temperature environments and achieve energy-saving effects.

[0010] When the aforementioned intelligent openable nickel-titanium alloy temperature control and heat dissipation device operates at low temperatures (when the equipment generates a large amount of heat, causing the ambient temperature to rise to the austenite transformation temperature of the nickel-titanium high-temperature alloy rod), Af When the temperature reaches 30°C or above, the nickel-titanium high-temperature alloy rod undergoes a martensitic-to-austenitic phase transformation and deformation. The mechanical force generated during the phase transformation is transmitted to the fan blade assembly through the linkage structure, causing the fan blade assembly to unfold synchronously, significantly increasing the airflow area, thereby greatly improving the heat dissipation efficiency, and promptly dissipating the heat generated by the equipment. This ensures that the equipment operates stably within a suitable temperature range and avoids affecting equipment performance or causing equipment damage due to excessive temperature.

[0011] The intelligent opening and closing temperature-controlled heat dissipation device design and method provided by this invention have the following significant advantages compared with the prior art: First, this invention utilizes the shape memory effect and superelasticity of nickel-titanium high-temperature alloy to achieve automatic temperature-controlled opening and closing of the heat dissipation device's fan blades, eliminating the need for additional control circuits and power devices. The structure is simple and compact, and energy consumption is effectively reduced. Second, this invention mimics the folding and unfolding structure of a folding fan, resulting in natural and smooth fan blade opening and closing movements, reliable transmission, and high transmission efficiency, ensuring timely and stable heat dissipation adjustment. Finally, this invention can dynamically adjust its heat dissipation capacity according to the ambient temperature, saving energy and reducing consumption at low temperatures, and efficiently dissipating heat at high temperatures. It can flexibly adapt to different working environment temperature requirements and has a wide range of applications. Attached Figure Description

[0012] Figure 1 This is a flowchart illustrating the specific implementation of the intelligent temperature control and heat dissipation device of the present invention.

[0013] Figures 2-5 This is a schematic diagram of the intelligent temperature control and heat dissipation device of the present invention in the state of not being deformed by heat (fan blades closed).

[0014] Figure 2 This is an isometric view and a cross-sectional view of the intelligent temperature control and heat dissipation device of the present invention before it is subjected to heat deformation.

[0015] Figure 3 This is an isometric view and a cross-sectional view of the undeformed interior of the intelligent temperature control and heat dissipation device of the present invention.

[0016] Figure 4 This is a top view of the internal structure of the intelligent temperature control and heat dissipation device of the present invention before it is deformed by heat.

[0017] Figure 5 This is an isometric view and a cross-sectional view of the fan blade assembly of the intelligent temperature control heat dissipation device of the present invention before it is deformed by heat.

[0018] Figures 6-9 This is a schematic diagram of the intelligent temperature control heat dissipation device of the present invention under heat deformation (fan blades open).

[0019] Figure 6 This is an isometric view and a cross-sectional view of the appearance of the intelligent temperature control and heat dissipation device of the present invention under heat deformation.

[0020] Figure 7 This is an isometric view and a cross-sectional view of the internal deformation of the intelligent temperature control and heat dissipation device of the present invention under heat.

[0021] Figure 8 This is a top view of the internal deformation of the intelligent temperature control and heat dissipation device of the present invention under heat.

[0022] Figure 9 This is an isometric view and a cross-sectional view of the fan blade assembly of the intelligent temperature control heat dissipation device of the present invention under heat deformation. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-9 The present invention provides a technical solution: an intelligent opening and closing temperature control heat dissipation device, including a square mounting base 1, a top cover 2, a fan blade assembly 3-4, nickel-titanium high-temperature alloy rods 5-6 and a central support rod 7.

[0025] The square mounting base 1 serves as the basic fixing component of the heat dissipation device. It is integrally formed from high-strength aluminum alloy, possessing excellent structural stability and thermal conductivity. Circular mounting holes are opened at its four corners, and the inner walls of the mounting holes are provided with internal threads. The heat dissipation device can be firmly fixed by connecting the fastening bolts to the threaded connection of the mounting surface of the equipment, effectively preventing the heat dissipation device from displacement due to vibration during equipment operation.

[0026] The fan blade assembly consists of an inner fan blade 4 and an outer fan blade 3. Both the inner fan blade 4 and the outer fan blade 3 are made of thin copper alloy sheet by stamping. The surface is anodized to form an anti-oxidation coating, which extends the service life. The fan blade assembly is evenly distributed radially around the stainless steel central shaft located at the center of the square mounting base. The inner fan blade 4 and the outer fan blade 3 are movably connected to the central support rod 7 through a hinge structure, and can rotate flexibly around the central shaft 360° to achieve complete closure and maximum angle opening of the fan blades.

[0027] The nickel-titanium high-temperature alloy rod 5 selected in this invention is made of nickel-titanium alloy material and processed by metal 3D printing technology. After solution treatment and aging treatment, the phase transformation temperature range of this alloy is precisely controlled within 60°C-80°C, wherein the austenite initiation transformation temperature is... As The austenite transformation temperature is maintained at 60°C ± 2°C. Af Stable at 80°C±2°C, ensuring precise response of the heat dissipation device within the set temperature range; during the phase transformation process, the alloy's shape recovery rate is no less than 95%, and even after more than 1000 thermal cycle phase transformations, the shape recovery rate can still be maintained above 90%, exhibiting excellent fatigue life; at the same time, the recovery stress generated during the phase transformation can reach 200-300MPa, which can effectively overcome the frictional resistance when the fan blade assembly rotates, ensuring that the fan blades unfold smoothly when the temperature reaches the set value, and after the temperature drops, the recovery stress can drive the fan blades to close reliably, avoiding fan blade jamming.

[0028] The fan blade assembly and the nickel-titanium high-temperature alloy rod 5 adopt a multi-group linkage design. Specifically, every two fan blades are connected to one nickel-titanium high-temperature alloy rod 5. Multiple rods are evenly distributed along the circumference of the central support rod 7 to ensure balanced force on the fan blade assembly. The hinge between the fan blade connecting seat and the nickel-titanium high-temperature alloy rod 5 of the fan blade assembly is equipped with a lever-type transmission structure. That is, the small deformation of the nickel-titanium high-temperature alloy rod 5 can be amplified by the lever and converted into a large rotation of the fan blade assembly, so that the opening and closing angle of the fan blade can reach a maximum of 200°, ensuring that the heat dissipation area can be significantly adjusted according to temperature changes. In addition, during the deformation process, wear-resistant pads are provided at the connection points between the rod and the fan blade connecting seat and the fixed bracket to reduce wear caused by long-term movement. In addition, an angle limiting mechanism is provided at the central axis of the fan blade assembly. When the fan blade is unfolded to the maximum angle, the limiting mechanism can prevent the fan blade from continuing to rotate, avoiding damage to the fan blade or the rod due to excessive deformation of the nickel-titanium high-temperature alloy rod 5. At the same time, when the fan blade is closed, the limiting mechanism can keep the fan blade in a tight fit, reducing heat loss at low temperatures and further improving the temperature control accuracy and safety of the heat dissipation device.

[0029] For a temperature control method of an intelligent openable and closed temperature-controlled heat dissipation device, please refer to [link / reference]. Figures 1-9 The specific process is as follows.

[0030] Low temperature state: such as Figures 2-5 When the ambient temperature of the heat dissipation device is lower than the austenite transformation temperature of nickel-titanium high-temperature alloy rod 5, As At 60°C, the nickel-titanium high-temperature alloy rod is in the martensitic phase and maintains its initial linear shape without deformation. At this time, under the action of the structural constraint mechanism, the inner fan blade 4 and the outer fan blade 3 are superimposed and attached to each other, maintaining a completely closed state. The gap between the fan blades is less than 2mm, the air circulation channel is narrow, the air circulation volume is reduced to 0.1-0.3m³ / h, and the heat dissipation capacity is reduced to 5-10W. This can effectively avoid energy waste caused by excessive heat dissipation when the equipment is running at low temperature, and at the same time prevent the internal temperature of the equipment from being too low and affecting the performance of the components. High temperature state: such as Figures 6-9 When the equipment generates heat during operation, the ambient temperature of the heat dissipation device rises to the austenite transformation temperature of the nickel-titanium high-temperature alloy rod 5. AfAt 80°C and above, the nickel-titanium high-temperature alloy rod 5 begins to transform from martensite to austenite, accompanied by linear elongation deformation. The 200-300MPa mechanical force generated during the phase transformation is transmitted to the fan blade assembly through a lever-type linkage structure, driving the fan blade to rotate around the central support rod 7, and the fan blade gradually unfolds. When the temperature stabilizes above 80°C, the fan blade is fully unfolded, and the airflow area expands from the initial closed state to 55%, which can quickly dissipate the heat generated by the equipment to the external environment through convection and radiation heat transfer. When the equipment load decreases and the ambient temperature drops below 60°C, the nickel-titanium high-temperature alloy rod 5 transforms from austenite to martensite, the deformation recovers, and drives the fan blade assembly to rotate in the opposite direction, re-cooperating with the structural constraint mechanism, returning to the closed state, realizing automatic cyclic adjustment of heat dissipation capacity, and ensuring that the equipment always operates within the suitable temperature range of 25°C-60°C.

[0031] While the present invention has been described in detail through specific embodiments, those skilled in the art should understand that the above examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A design and method for an intelligent openable and closable temperature-controlled heat dissipation device, characterized in that, It includes a square mounting base, a top cover, a fan blade assembly, a central support rod, and nickel-titanium high-temperature alloy rods.

2. The square mounting base according to claim 1 has a quadrilateral structure with mounting holes at the four corners. The heat sink can be firmly fixed to electronic equipment, mechanical devices, and other equipment that require heat dissipation by means of fasteners such as bolts, providing a stable mounting base for the entire heat dissipation device.

3. The fan blade assembly according to claim 1 is composed of multiple arc-shaped fan blades spliced ​​together, characterized in that, The fan blades are hinged in a fan shape to the central support rod of the square mounting base. The fan blade assembly is radially distributed around the central axis. Each pair of fan blades is connected by a flexible nickel-titanium alloy connector to achieve synchronous opening and closing. The fan blades can rotate flexibly around the central axis to open and close. When the fan blades are closed, they are close to each other, forming a small airflow space. When the fan blades are open, the distance between the fan blades increases, the airflow space is significantly expanded, and the heat dissipation area is effectively changed.

4. The structural design of the intelligent opening and closing temperature control and heat dissipation device according to claim 1, characterized in that, The aforementioned nickel-titanium superalloy is prepared using additive manufacturing technology and has a specific phase transition temperature range. The nickel-titanium superalloy rod can generate recoverable linear deformation when the ambient temperature changes, thanks to its shape memory effect and superelasticity. This deformation then drives the fan blade assembly to rotate around the central axis through the hinge point, completing the opening and closing action of the fan blade. When the ambient temperature rises, the nickel-titanium alloy deforms due to the phase transition, pushing the drive mechanism to automatically open the fan blade, increasing the heat dissipation area. After the temperature drops, it returns to its initial shape, driving the fan blade to close, achieving passive temperature-controlled heat dissipation. Utilizing these characteristics, when the temperature changes, the nickel-titanium superalloy rod will deform. Through the linkage structure with the fan blade assembly, the deformation is converted into the rotation of the fan blade, realizing the opening and closing of the fan blade.

5. The temperature control method of the intelligent openable and closable temperature-controlled heat dissipation device according to claim 1, characterized in that, It includes two steps: low-temperature operating state and high-temperature operating state.

6. The temperature control and heat dissipation device according to claim 1 operates when the ambient temperature is below 60°C (i.e., the austenite transformation temperature of the nickel-titanium high-temperature alloy rod). As When the nickel-titanium high-temperature alloy rod is in its initial undeformed state, the fan blade assembly remains closed due to the constraint of the structure. The air circulation area is small and the heat dissipation capacity is weak, which is suitable for the heat dissipation needs of equipment in low-temperature environments, avoiding unnecessary heat loss and playing an energy-saving role.

7. The temperature control and heat dissipation device according to claim 1 operates when the equipment generates a large amount of heat, causing the ambient temperature to rise to 80°C or above (i.e., the austenite transformation temperature of the nickel-titanium high-temperature alloy rod). Af During this process, the nickel-titanium high-temperature alloy rod undergoes a martensitic-to-austenitic phase transformation, resulting in deformation. The mechanical force generated during the phase transformation is transmitted to the fan blade assembly through the linkage structure, causing the fan blade assembly to unfold, increasing the airflow area, improving heat dissipation efficiency, and enabling the heat generated by the equipment to be dissipated in a timely manner. This ensures that the equipment operates within a suitable temperature range and avoids affecting equipment performance or even damaging the equipment due to excessive temperature.

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