Fuse with rapid heat dissipation structure

Abstract

The invention provides a fuse with a rapid heat dissipation structure, and belongs to the technical field of fuses, and the fuse comprises a fuse body, and also comprises a housing which sleeves the outer side of the fuse body; the plurality of groups of first heat dissipation modules are arranged on the fuse body in a strip shape; the second heat dissipation module is installed on the outer side of the fuse body and is in abutting connection with a third heat dissipation module arranged on the shell; wherein the first heat dissipation module comprises a spherical fin rotationally connected to the fuse body, an arc groove is formed in an inner cavity of the spherical fin, electromagnets are installed at the upper end and the lower end of an inner cavity of the arc groove, and one side of each electromagnet is magnetically connected with a sphere slidably connected into the arc groove; according to the fuse with the rapid heat dissipation structure provided by the invention, high temperature generated in the fusing process of the fuse can be efficiently and rapidly dissipated, the heat dissipation effect is good, the overall heat dissipation speed is improved, the structural design is few, the production cost is reduced, and the applicability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of fuses, and in particular relates to a fuse with a rapid heat dissipation structure. Background Art

[0002] A fuse is a circuit protection device that works based on the principle of thermal effect of electric current. Its core function is to cut off the fault current by melting its own fuse, preventing accidents such as fire and equipment damage caused by overload or short circuit of the circuit. As an important component of circuit protection, fuses are widely used in various distribution systems, electronic equipment and industrial equipment. Its working principle is mainly based on the Joule heating effect generated by the conductor when the current passes through it. When the current exceeds the preset value, the fuse temperature rises to the melting point and melts, thereby cutting off the circuit. Fuses can be divided into various types such as tubular, sheet and block according to the structural form. According to the fusing characteristics, they can be divided into fast-blow type, delayed-blow type, etc. With the complexity of power systems and electronic equipment, higher requirements are placed on the heat dissipation performance of fuses. The heat dissipation efficiency of fuses directly affects their working reliability and service life.

[0003] The patent document with the authorization announcement number CN221812081U disclosed a fuse with good heat dissipation performance, including a base, a fuse tube assembly, and a cover body. The fuse tube assembly includes two conductive clips, a handle, a fuse tube, and two wiring terminals. The base is provided with a plurality of first heat dissipation holes at one side of the fuse tube, and the cover body is provided with a plurality of second heat dissipation holes at the other side of the fuse tube. The base is provided with a plurality of third heat dissipation holes at the two wiring terminals, and the base is provided with a plurality of fourth heat dissipation holes below the plurality of first heat dissipation holes. Two positioning bosses are provided on both sides of the handle, and the base and the cover body are respectively provided with positioning grooves matched with the positioning bosses. The positioning bosses are engaged in the positioning grooves, and the two positioning bosses are engaged with the base and the cover body. The utility model has the advantages of simple structure, stable and reliable performance, high assembly efficiency, and good heat dissipation performance.

[0004] Although the above-mentioned patent achieves the purpose of heat dissipation, it faces many limitations in practical applications. That is to say, the existing technology adopts a completely passive heat dissipation scheme, lacking an active adjustment mechanism and being difficult to cope with the sudden high temperature generated during the fusing process. When the fuse undergoes a fusing operation, the generated heat will continuously accumulate. After the fixed heat dissipation fins absorb a certain amount of heat, their heat dissipation efficiency will be significantly reduced, forming a heat accumulation area. This heat accumulation not only affects the service life of the fuse itself but may also cause thermal damage to surrounding components. Especially in high-density integrated circuits or high-power application scenarios, the heat dissipation problem is more prominent. In this traditional scheme, the heat conduction path between the heat dissipation element and the fuse body is single, lacking a mechanism for rapid heat shunting and transfer, and not utilizing the principle of aerodynamics to accelerate the heat exchange process. Without external interference, this design is difficult to achieve rapid heat dispersion and efficient heat dissipation, resulting in the entire fusing system remaining at a high temperature for a long time, not only reducing the reliability of electrical equipment but also increasing potential safety hazards. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a fuse with a rapid heat dissipation structure, effectively solving the problems existing in the prior art, such as a completely passive heat dissipation scheme lacking an active adjustment mechanism, being difficult to cope with the sudden high temperature generated during the fusing process. When the fuse undergoes a fusing operation, the generated heat will continuously accumulate. After the fixed heat dissipation fins absorb a certain amount of heat, their heat dissipation efficiency will be significantly reduced, forming a heat accumulation area. This heat accumulation not only affects the service life of the fuse itself but may also cause thermal damage to surrounding components. Especially in high-density integrated circuits or high-power application scenarios, the heat dissipation problem is more prominent. In this traditional scheme, the heat conduction path between the heat dissipation element and the fuse body is single, lacking a mechanism for rapid heat shunting and transfer, and not utilizing the principle of aerodynamics to accelerate the heat exchange process. Without external interference, this design is difficult to achieve rapid heat dispersion and efficient heat dissipation, resulting in the entire fusing system remaining at a high temperature for a long time, not only reducing the reliability of electrical equipment but also increasing potential safety hazards.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A fuse with a rapid heat dissipation structure comprises a fuse body, and also comprises: a shell, which is sleeved on the outside of the fuse body; a first heat dissipation module, which is provided with multiple groups and is arranged on the fuse body in a strip shape; a second heat dissipation module, which is installed on the outside of the fuse body and is abutted and connected with a third heat dissipation module arranged on the shell; wherein the first heat dissipation module comprises a spherical fin rotatably connected to the fuse body, an inner cavity of the spherical fin is provided with an arc groove, and electromagnets are installed at both upper and lower ends of the inner cavity of the arc groove, and one side of the electromagnet is magnetically connected to a sphere slidably connected in the arc groove; the second heat dissipation module comprises a bidirectional electric telescopic rod fixedly connected to the inner wall of the shell, metal bellows are installed on both sides of the bidirectional electric telescopic rod, and a silicone rubber sheet slidably connected in the pipe is fixed at the corner of the inner cavity of the metal bellows; the third heat dissipation module comprises a rotating fan blade, and a screw is threadedly connected to the inner cavity of the rotating fan blade.

[0007] Preferably, both side walls of the shell are provided with slots for gas circulation. The shell adopts a three-layer structure design, and the innermost layer on the side close to the fuse body is made of ceramic material, and the phase change material of high thermal conductivity alloy or organic composite material is filled between the innermost layer and the outermost layer.

[0008] Preferably, the outer wall of the fuse body is provided with an arc groove for allowing the spherical fin to rotate, and a plurality of guide plates are equidistantly installed on the outer side of the spherical fin, and the outer ends of the guide plates are movably connected to the inner walls of the arc groove; the electromagnet is electrically connected to a power module installed in the inner cavity at the end of the fuse body.

[0009] Preferably, a clamping block is provided at one end of the metal bellows close to the bidirectional electric telescopic rod, and the metal bellows is slidably connected to the fuse body through the clamping block, and the side of the metal bellows away from the bidirectional electric telescopic rod is connected to the inner cavity of the fuse body through a pipe; The top of the clamping block is fixedly connected to the third heat dissipation module.

[0010] Preferably, a baffle for resisting the bottom end of the silicone rubber sheet is provided inside the pipe, and limiting steel bars for guiding the movement of the silicone rubber sheet are installed on both sides of the inner cavity of the pipe.

[0011] Preferably, a plurality of air holes for gas leakage are provided at the bend of the outer wall of the pipe, and the positions of the air holes are directly opposite to the slot area of the shell; The silicone rubber sheet is in a "U" shape and does not contact the air holes on the pipeline.

[0012] Preferably, the rotating fan blades are provided in multiple groups and are connected to the housing in a nested manner; The rotating fan blades are located just outside the spherical fins.

[0013] Preferably, a connecting frame is fixedly connected to one end of the screw rod away from the rotating fan blade, and one end of the connecting frame penetrates into the housing and is fixedly connected to the clamping block at the end of the metal bellows.

[0014] Preferably, the power module is composed of an elastic push-button switch and a shape memory alloy fixedly connected to the inner cavity of the end of the fuse body. The elastic push-button switch is electrically connected to the electromagnet and the bidirectional electric telescopic rod.

[0015] The present invention also proposes a method for using a fuse with a fast heat dissipation structure, and the method includes the following steps: S1. When the fuse body undergoes a fusing operation, the generated temperature will cause the shape memory alloy of the power module to deform. By the deformation of the shape memory alloy, the elastic push-button switch is touched to make it work. At this time, the electromagnet located on the lower side is energized, and it makes the sphere "impact" upward in the arc groove through the same-sex repulsion, so that the spherical fins rotate, and the bottom end of the spherical fin in direct contact with the fuse body, that is, the end region with a higher temperature, flips upward. At the same time, the top end of the spherical fin, that is, the end region with a lower temperature, will flip downward; During the rotation of the spherical fins, the flow guide plates on its surface will also move accordingly. The rotation of multiple flow guide plates will disturb the air flow in the connection area between the spherical fins and the fuse body; S2. Subsequently, the bidirectional electric telescopic rod operates, and drives the metal bellows to expand and contract through its output end. When the metal bellows undergoes an expansion movement, it will pull the silicone rubber sheet to move upward in the inner cavity of the pipeline, so that the bottom end of the silicone rubber sheet releases the closed state of the inner cavity of the pipeline, and at the same time inhales the heat in the inner cavity of the fuse body and inhales the external cooler air flow entering through the housing slot holes and the air holes on the pipeline for mixing; when the metal bellows undergoes a contraction movement, it will drive the silicone rubber sheet to move downward inside the pipeline, and through the blocking of the baffle, the closed state of the inner cavity of the pipeline is realized again, and at the same time the gas inside the continuously contracting metal bellows is discharged to the housing slot hole area through the air holes on the pipeline; S3. During the expansion and contraction movement of the metal bellows, the connecting frame and the screw rod are driven to move in the inner cavity of the rotating fan blade through the clamping block on the metal bellows, and the rotating fan blade is driven to rotate on the housing. When the rotating fan blade rotates, it will directly blow the wind on the spherical fins in the already upward-flipped higher temperature area, so that the temperature difference between the upper and lower ends of the spherical fins is always maintained; S4. When the fusing temperature drops, through the restoration of the shape memory alloy in the power module, the electromagnet and the bidirectional electric telescopic rod are powered off, and at this time the bottom end of the silicone rubber sheet will close the pipeline.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1)A fuse with a fast heat dissipation structure provided by the present invention can efficiently dissipate the high temperature generated during the fuse melting process, with good heat dissipation effect, improving the overall heat dissipation speed, having few structural designs, reducing production costs, and being highly applicable.

[0017] (2)Through the coordinated cooperation of the spherical fins, electromagnets, spheres, and flow guiding plates, the present invention can not only use the rotation of the spherical fins to prevent the continuous increase of heat and the excessive temperature in the contact area between the spherical fins and the fuse body, but also use the flow guiding plates on the spherical fins to disturb the air flow outside the spherical fins and accelerate the flow force of the air flow; specifically, when the electromagnet located at the lower side is energized, it makes the sphere "impact" upward in the arc groove through the repulsion of the same sex, making the spherical fins rotate and the higher temperature end area in direct contact with the fuse body turn upward, and the lower end area at the top of the spherical fins will turn downward, realizing the rotation of the spherical fins, so that the initial upper and lower ends of the spherical fins exchange positions, preventing one end of the spherical fins from always contacting the fuse body and resulting in heat being unable to dissipate.

[0018] (3)Through the coordinated cooperation of the metal bellows, silicone rubber sheet, limit steel bars, and baffles, the present invention can not only absorb the heat inside the fuse body and promote the exchange of internal and external heat, but also "impact" the shell slots with wind through the air holes on the pipeline, improving the overall air flow circulation of the shell; specifically, the bidirectional electric telescopic rod drives the metal bellows to expand and contract through its output end. When expanding, it inhales the heat in the inner cavity of the fuse body and the lower temperature air flow outside for mixing; when contracting, through the blocking of the baffle, the inner cavity of the pipeline is closed again, and the gas is discharged through the air holes on the pipeline to the shell slot area, quickly exchanging the heat inside the fuse body, and also avoiding the situation where the external gas of the fuse body is always at a high level, reducing the heat dissipation efficiency.

[0019] (4)Through the coordinated cooperation of the rotating fan blades, screw rods, connecting frames, and connecting frames, the present invention can not only directly blow the wind on the directly outer area of the spherical fins, making the upper and lower ends of the spherical fins always maintain a temperature difference, but also improve the exchange of internal and external air flows; specifically, during the expansion and contraction movement of the metal bellows, the connecting frame and the screw rod are driven by the clamping blocks on the metal bellows to move in the inner cavity of the rotating fan blades, and the rotating fan blades are driven to rotate on the shell. When the rotating fan blades rotate, they directly blow the wind on the spherical fins in the higher temperature area that has turned upward, making the upper and lower ends of the spherical fins always maintain a temperature difference, thereby improving the heat dissipation effect. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic structural diagram of the second heat dissipation module and the first heat dissipation module of the present invention; Figure 3 This is a schematic diagram of the detailed structure of the first heat dissipation module of the present invention; Figure 4 This is the present invention Figure 3 A partial enlarged structural diagram at position A in; Figure 5 This is a schematic structural diagram of the bidirectional electric telescopic rod and the metal bellows of the present invention; Figure 6 This is the present invention Figure 5 A partial enlarged structural diagram at position B in; Figure 7 This is a schematic structural diagram of the silicone rubber sheet and the limit steel bar of the present invention; Figure 8 This is the present invention Figure 7 A partial enlarged structural diagram at position C in; Figure 9 This is a schematic structural diagram of the silicone rubber sheet and the pipeline of the present invention; Figure 10 This is the present invention Figure 9 A partial enlarged structural diagram at position D in; Figure 11 This is a schematic structural diagram of the metal bellows and the connecting frame of the present invention; Figure 12 This is a schematic diagram of the detailed structure of the third heat dissipation module of the present invention.

[0021] In the figure: 100, fuse body; 200, housing; 300, first heat dissipation module; 310, spherical fin; 320, electromagnet; 330, sphere; 340, arc groove; 350, flow guide plate; 400, second heat dissipation module; 410, bidirectional electric telescopic rod; 420, metal bellows; 430, pipeline; 440, silicone rubber sheet; 450, retaining piece; 460, limit steel bar; 500, third heat dissipation module; 510, rotating fan blade; 520, screw rod; 530, connecting frame; 600, power module. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] It should be understood that in the description of the invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense.

[0025] Embodiment 1: As Figures 1 to 12 shown, the present invention provides a fuse with a fast heat dissipation structure, including a fuse body 100, and further including: a housing 200 sleeved outside the fuse body 100; multiple first heat dissipation modules 300 arranged in a strip shape on the fuse body 100; a second heat dissipation module 400 installed outside the fuse body 100 and in contact connection with a third heat dissipation module 500 arranged on the housing 200; wherein the first heat dissipation module 300 includes a spherical fin 310 rotatably connected to the fuse body 100, an arc groove 340 is opened in the inner cavity of the spherical fin 310, electromagnets 320 are installed at both the upper and lower ends of the inner cavity of the arc groove 340, and a sphere 330 slidably connected in the arc groove 340 is magnetically connected to one side of the electromagnet 320; the second heat dissipation module 400 includes a bidirectional electric telescopic rod 410 fixedly connected to the inner wall of the housing 200, metal bellows 420 are installed on both sides of the bidirectional electric telescopic rod 410, and a silicone rubber sheet 440 slidably connected in a pipe 430 is fixedly connected at the corner of the inner cavity of the metal bellows 420; the third heat dissipation module 500 includes a rotating wind blade 510, and a screw rod 520 is threadedly connected in the inner cavity of the rotating wind blade 510.

[0026] Specifically, slots for gas circulation are opened on both side walls of the housing 200. The housing 200 adopts a three-layer structure design. The side close to the fuse body 100, that is, the innermost layer, is made of ceramic material, and a phase change material of high thermal conductivity alloy or organic composite material is filled between the innermost layer and the outermost layer.

[0027] An arc groove for rotating the spherical fin 310 is opened on the outer wall of the fuse body 100. A plurality of flow guiding plates 350 are equidistantly installed on the outside of the spherical fin 310, and the outer ends of the flow guiding plates 350 are in fitting and movable connection with the inner wall of the arc groove; the electromagnet 320 is electrically connected to a power module 600 installed in the inner cavity of the end of the fuse body 100.

[0028] The arc groove stabilizes the spherical fin 310 and provides a good rotation space for the spherical fin 310. At the same time, when the power module 600 issues a start command to the electromagnet 320 through the data control center, Figure 4 As shown in the figure, after the electromagnet 320 at the lower side is energized, the sphere 330 has the same magnetic properties as the electromagnet 320 at the lower side. Due to the repulsion of like charges, the sphere 330 moves upward rapidly along the path of the arc groove 340. The electromagnet 320 at the upper side is not energized. Under the action of the stress and impact force of the sphere 330, the spherical fin 310 moves upward rapidly along the arc groove 340. Figure 4 The center point indicated by the dotted line is the axis of rotation, that is, the electromagnet 320 originally located on the upper side rotates to the lower side, and the electromagnet 320 originally located on the lower side rotates to the upper side; similarly, when the spherical fin 310 rotates, the power module 600 again issues a start command to the electromagnet 320 through the data control center, and the electromagnet 320 located on the lower side will again cause the ball 330 to impact upward again due to the repulsion of like charges, so that the spherical fin 310 flips and resets; The spherical fins 310 will drive the guide plate 350 to move during the flipping process, and the guide plate 350 will disturb the external air to enhance the heat exchange effect between the airflow in the inner cavity of the housing 200 and the external airflow.

[0029] Meanwhile, it should be noted that the sphere 330 is magnetized.

[0030] A clamping block is provided at one end of the metal bellows 420 close to the bidirectional electric telescopic rod 410, and the metal bellows 420 is slidably connected to the fuse body 100 through the clamping block, and the side of the metal bellows 420 away from the bidirectional electric telescopic rod 410 is connected to the inner cavity of the fuse body 100 through the pipe 430; The top of the block is fixedly connected to the third heat dissipation module 500 .

[0031] A blocking piece 450 is disposed inside the pipe 430 to resist the bottom end of the silicone rubber sheet 440 , and limiting steel bars 460 are installed on both sides of the inner cavity of the pipe 430 to guide the movement of the silicone rubber sheet 440 .

[0032] Combination Figure 6It can be seen that the top end of the silicone rubber sheet 440 is connected to the folding area inside the metal bellows 420. When the metal bellows 420 expands outward, it will pull the silicone rubber sheet 440 to move upward synchronously from the inner cavity of the pipeline 430 under the limitation of the limiting steel bar 460. At this time, the bottom end of the silicone rubber sheet 440 will release the blocking effect on the inner cavity of the pipeline 430 by the baffle 450, so that the heat in the fuse body 100 can quickly enter the inside of the metal bellows 420 through the pipeline 430. On the contrary, when the metal bellows 420 folds and contracts, it will drive the bottom end of the silicone rubber sheet 440 to move downward in the inner cavity of the pipeline 430. At this time, the bottom end of the silicone rubber sheet 440 will be blocked by the baffle 450 and bend to present as Figure 6 the state shown in the figure, and then block the inner cavity of the pipeline 430; It should be noted that: the silicone rubber sheet 440 is made of high-temperature resistant material.

[0033] A number of air holes for gas leakage are provided at the bent part of the outer wall of the pipeline 430, and the positions of the air holes are opposite to the slot area of the outer shell 200; The silicone rubber sheet 440 is in a "U" shape and does not contact the air holes on the pipeline 430.

[0034] When the metal bellows 420 contracts, at this time the silicone rubber sheet 440 blocks the inner cavity of the pipeline 430. The heat absorbed due to the expansion of the metal bellows 420 will "impact" the slot holes of the outer shell 200 through the air holes on the pipeline 430. While discharging the internal hot air, it makes the gas "impact" outward on the slot area of the outer shell 200 so that the impurities on the slot holes can be discharged outward, improving the gas circulation between the inside and outside of the outer shell 200. At the same time, during the expansion and contraction process of the metal bellows 420, it will also make the gas with a lower temperature outside enter the fuse body 100 to achieve the purpose of rapid heat exchange.

[0035] There are multiple groups of rotating wind blades 510, which are rotatably connected to the outer shell 200 in a nested manner; The rotating wind blade 510 is located directly outside the spherical fin 310.

[0036] When the rotating wind blade 510 rotates, it will accelerate the heat exchange effect of the gas inside and outside the outer shell 200. At the same time, because the installation position of the rotating wind blade 510 is directly opposite to the spherical fin 310, it will directly exchange heat in the area of the spherical fin 310.

[0037] One end of the screw 520 away from the rotating wind blade 510 is fixedly connected with a connecting frame 530, and one end of the connecting frame 530 penetrates into the outer shell 200 and is fixedly connected with the block at the end of the metal bellows 420.

[0038] When the bidirectional electric telescopic rod 410 drives the metal bellows 420 to move back and forth, it will also synchronously drive the screw 520 to move inside the rotating fan blade 510 through the connecting frame 530. At this time, due to the threaded connection between the screw 520 and the rotating fan blade 510, the rotating fan blade 510 will rotate on the housing 200.

[0039] The power module 600 is composed of an elastic push-type switch fixed to the inner cavity at the end of the fuse body 100 and a memory metal.

[0040] The elastic push switch is electrically connected to the electromagnet 320 and the bidirectional electric telescopic rod 410. When the temperature generated when the fuse is blown causes the memory metal to deform, the memory metal touches the elastic push switch, and the electromagnet 320 and the bidirectional electric telescopic rod 410 are activated by the elastic push switch. The elastic push switch is activated by the deformation force of the memory metal. It should be noted that the temperature at which the fuse melts is sufficient to deform the memory metal, and the specific suitable memory metal can be selected according to the actual application.

[0041] The present invention also provides a method for using a fuse with a rapid heat dissipation structure, the method comprising the following steps: S1, when the fuse body 100 is blown, the temperature generated will cause the memory metal of the power module 600 to deform, and the deformation of the memory metal will resist the elastic push switch to make it work. At this time, the electromagnet 320 located on the lower side will be energized, so that the ball 330 will "impact" upward in the arc groove 340 through repulsion of like charges, so that the spherical fin 310 will rotate, so that the bottom end of the spherical fin 310 directly in contact with the fuse body 100, that is, the end area with a higher temperature, will flip upward, and at the same time, the top end of the spherical fin 310, that is, the end area with a lower temperature, will flip downward, realizing the rotation of the spherical fin, so that the upper and lower ends of the spherical fin are initially rotated and interchanged; During the rotation of the spherical fin 310, the guide plate 350 on the surface thereof will also move accordingly. The rotation of the multiple guide plates 350 will disturb the airflow in the connection area between the spherical fin 310 and the fuse body 100. S2. Subsequently, the bidirectional electric telescopic rod 410 operates, driving the expansion and contraction of the metal bellows 420 through its output end. When the metal bellows 420 expands, it will pull the silicone rubber sheet 440 to move upward in the inner cavity of the pipeline 430, causing the bottom end of the silicone rubber sheet 440 to release the closed state of the inner cavity of the pipeline 430, and at the same time inhaling the heat in the inner cavity of the fuse body 100 and the cooler external air flow entering through the slots of the housing 200 and the air holes on the pipeline 430 for mixed flow; when the metal bellows 420 contracts, it will drive the silicone rubber sheet 440 to move downward inside the pipeline 430, and through the obstruction of the baffle 450, the inner cavity of the pipeline 430 is closed again, and at the same time the gas inside the continuously contracting metal bellows 420 is discharged through the air holes on the pipeline 430 to the slot area of the housing 200. S3. During the expansion and contraction of the metal bellows 420, the connecting frame 530 and the screw 520 are driven to move in the inner cavity of the rotating fan blade 510 through the clamping block on the metal bellows 420, and the rotating fan blade 510 is driven to rotate on the housing 200. When the rotating fan blade 510 rotates, it will directly blow the spherical fins 310 in the higher temperature area that has been flipped upward, so that there is always a temperature difference between the upper and lower ends of the spherical fins 310. S4. When the fusing temperature drops, the memory metal in the power module 600 restores its shape, causing the electromagnet 320 and the bidirectional electric telescopic rod 410 to be powered off. At this time, the bottom end of the silicone rubber sheet 440 will close the pipeline 430.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fuse with a fast heat dissipation structure, comprising a fuse body (100), characterized in that: Also includes: A shell (200) is sleeved on the outside of a fuse body (100); a first heat dissipation module (300) is provided with a plurality of groups and is arranged on the fuse body (100) in a strip shape; a second heat dissipation module (400) is installed on the outside of the fuse body (100) and is abutted against and connected to a third heat dissipation module (500) arranged on the shell (200); wherein the first heat dissipation module (300) comprises a spherical fin (310) rotatably connected to the fuse body (100), an inner cavity of the spherical fin (310) is provided with an arc groove (340), and electromagnets are installed at both upper and lower ends of the inner cavity of the arc groove (340) (320), and one side of the electromagnet (320) is magnetically connected to a sphere (330) slidably connected in the arc groove (340); the second heat dissipation module (400) comprises a bidirectional electric telescopic rod (410) fixedly connected to the inner wall of the housing (200), and metal bellows (420) are installed on both sides of the bidirectional electric telescopic rod (410), and a silicone rubber sheet (440) slidably connected in the pipe (430) is fixedly connected at the corner of the inner cavity of the metal bellows (420); the third heat dissipation module (500) comprises a rotating fan blade (510), and the inner cavity of the rotating fan blade (510) is threadedly connected to a screw (520).

2. The fuse with a fast heat dissipation structure according to claim 1, characterized in that: Both side walls of the shell (200) are provided with slots for gas circulation. The shell (200) adopts a three-layer structural design, and the side close to the fuse body (100), i.e., the innermost layer, is made of ceramic material, and a phase change material of a high thermal conductivity alloy or an organic composite material is filled between the innermost layer and the outermost layer.

3. The fuse with a fast heat dissipation structure according to claim 1, wherein: The outer wall of the fuse body (100) is provided with an arc groove for rotating the spherical fin (310); a plurality of guide plates (350) are equidistantly installed on the outer side of the spherical fin (310); and the outer ends of the guide plates (350) are movably connected to the inner walls of the arc groove; and the electromagnet (320) is electrically connected to a power module (600) installed in the inner cavity of the end of the fuse body (100).

4. The fuse with a fast heat dissipation structure according to claim 1, characterized in that: A clamping block is provided at one end of the metal bellows (420) close to the bidirectional electric telescopic rod (410), and the metal bellows (420) is slidably connected to the fuse body (100) via the clamping block, and a side of the metal bellows (420) away from the bidirectional electric telescopic rod (410) is connected to the inner cavity of the fuse body (100) via a pipe (430); The top end of the block is fixedly connected to the third heat dissipation module (500).

5. The fuse with a fast heat dissipation structure according to claim 1, wherein: A blocking sheet (450) is arranged inside the pipe (430) to resist the bottom end of the silicone rubber sheet (440), and limiting steel bars (460) are installed on both sides of the inner cavity of the pipe (430) to guide the movement of the silicone rubber sheet (440).

6. The fuse with a fast heat dissipation structure according to claim 5, wherein: A plurality of air holes for gas leakage are provided at the bend of the outer wall of the pipe (430), and the positions of the air holes are directly opposite to the slot area of the outer shell (200); The silicone rubber sheet (440) is in a "U" shape and does not contact the air holes on the pipe (430).

7. The fuse with a fast heat dissipation structure according to claim 1, wherein: A plurality of the rotating wind blades (510) are provided and are rotatably connected to the outer shell (200) in a nested manner; The rotating wind blades (510) are located directly outside the spherical fins (310).

8. The fuse with a fast heat dissipation structure according to claim 1, wherein: One end of the screw rod (520) away from the rotating wind blade (510) is fixedly connected with a connecting frame (530), and one end of the connecting frame (530) penetrates into the outer shell (200) and is fixedly connected with a clamping block at the end of the metal bellows (420).

9. The fuse with a fast heat dissipation structure according to claim 3, characterized in that: The power module (600) is composed of an elastic pressing switch and a shape memory alloy fixedly connected to the inner cavity of the end of the fuse body (100).

10. The usage method of the fuse with a fast heat dissipation structure according to any one of claims 1-9, characterized in that, The usage method includes the following steps: S1. When the fuse body (100) undergoes a fusing operation, the generated temperature causes the shape memory alloy of the power module (600) to deform. By the deformation of the shape memory alloy, the elastic pressing switch is touched to make it work. At this time, the electromagnet (320) located on the lower side is energized, and it repels the sphere (330) upward in the arc groove (340) through the same-sex repulsion, so that the spherical fins (310) rotate. The bottom end of the spherical fin (310) in direct contact with the fuse body (100), that is, the end region with a higher temperature, flips upward, and at the same time, the top end of the spherical fin (310), that is, the end region with a lower temperature, flips downward; During the rotation of the spherical fins (310), the flow guide plates (350) on its surface also move accordingly. The rotation of the plurality of flow guide plates (350) disturbs the air flow in the connection area between the spherical fins (310) and the fuse body (100); S2. Subsequently, the bidirectional electric telescopic rod (410) operates, and drives the metal bellows (420) to expand and contract through its output end. When the metal bellows (420) undergoes an expansion movement, it pulls the silicone rubber sheet (440) to move upward in the inner cavity of the pipeline (430), so that the bottom end of the silicone rubber sheet (440) releases the closed state of the inner cavity of the pipeline (430), and at the same time inhales the heat in the inner cavity of the fuse body (100) and the external cooler air flow entering through the slot holes of the outer shell (200) and the air holes on the pipeline (430) for mixing; when the metal bellows (420) undergoes a contraction movement, it drives the silicone rubber sheet (440) to move downward inside the pipeline (430), and through the blocking of the baffle (450), the closed state of the inner cavity of the pipeline (430) is realized again, and at the same time, the gas inside the continuously contracting metal bellows (420) is discharged to the slot hole area of the outer shell (200) through the air holes on the pipeline (430); S3. During the expansion and contraction movement of the metal bellows (420), the connecting frame (530) and the screw rod (520) are driven to move in the inner cavity of the rotating wind blade (510) through the clamping block on the metal bellows (420), and the rotating wind blade (510) is driven to rotate on the outer shell (200). When the rotating wind blade (510) rotates, it directly blows the wind on the spherical fin (310) in the already upward-flipped higher-temperature area, so that the temperature difference between the upper and lower ends of the spherical fin (310) is always maintained; S4. After the fusing temperature drops, due to the restored shape of the shape memory metal in the power module (600), the electromagnet (320) and the bidirectional electric telescopic rod (410) are powered off. At this time, the bottom end of the silicone rubber sheet (440) seals the pipeline (430).

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