A free-cooling heat dissipation device

Abstract

The present invention discloses a heat dissipation device with free cooling, which relates to the technical field of heat dissipation devices and includes: a main body, a liquid cooling mechanism, an air cooling mechanism, and an air volume adjustment component. Among them, the liquid cooling mechanism is arranged on the outside of the main body, the air cooling mechanism is arranged on the outside of the liquid cooling mechanism, and an air volume adjustment component is arranged at the input end of the air cooling mechanism. The air volume adjustment component includes an inner ring body, an outer ring body, an adjustment plate, and an extension plate. Among them, the inner ring body is rotatably arranged on the main body, a plurality of rotating shafts are fixedly arranged circumferentially on the outside of the inner ring body, the outer ring body is fixedly connected to the inner ring body through the plurality of rotating shafts, and the adjustment plate is rotatably arranged on the rotating shaft; through the setting of the air volume adjustment component, the air cooling mechanism can achieve two working states of natural air intake and passive air intake, that is, efficient heat dissipation can be achieved for equipment with unstable natural wind or in sealed and semi-sealed spaces, further expanding the applicable range of the heat dissipation device.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation devices, and particularly to a free-cooling heat dissipation device. Background Art

[0002] Free cooling is a technology that uses natural cold sources (such as ambient air, water bodies, soil, etc.) to dissipate heat from equipment or systems, without or minimizing dependence on traditional mechanical refrigeration (such as compressors, chillers). This technology is energy-saving and environmentally friendly and is widely used in data centers, industrial cooling, building air conditioning and other fields.

[0003] However, the efficiency of traditional air-side free cooling drops suddenly in high-temperature and high-humidity regions, and its climate adaptability is low. Liquid-side cooling depends on a stable water source, and a single heat exchanger cannot take into account the collaborative heat dissipation of air and liquid, resulting in low heat exchange efficiency. In addition, for equipment in a stable natural wind environment, there is no need to set up additional air guiding equipment, but for equipment in an unstable natural wind environment or in a closed or semi-closed space, additional air guiding mechanisms are still needed to introduce natural wind into the equipment for heat dissipation, which makes the applicability of traditional free-cooling heat dissipation equipment poor.

[0004] Therefore, it is necessary to provide a free-cooling heat dissipation device to solve the problems raised in the above background art. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: A free-cooling heat dissipation device, comprising: a main body, a liquid cooling mechanism, an air cooling mechanism and an air volume adjustment component. Among them, the liquid cooling mechanism is arranged outside the main body, the air cooling mechanism is arranged outside the liquid cooling mechanism, and an air volume adjustment component is arranged at the input end of the air cooling mechanism; the air volume adjustment component includes an inner ring body, an outer ring body, a regulating plate and an extension plate. Among them, the inner ring body is rotatably arranged on the main body, a plurality of rotating shafts are fixedly arranged circumferentially on the outer side of the inner ring body, the outer ring body is fixedly connected to the inner ring body through the plurality of rotating shafts, the regulating plate is rotatably arranged on the rotating shaft, and extension plates are slidably arranged at both ends of the regulating plate.

[0006] Preferably, a plurality of plane 1s are evenly arranged circumferentially on the outer side surface of the inner ring body, a plurality of plane 2s parallel to the plane 1s are evenly arranged circumferentially on the inner side surface of the outer ring body, and the number of the plane 1s and the plane 2s is an even number. Two slide rails 1 are arranged on the plane 1, and two slide rails 2 parallel to the slide rails 1 are arranged on the plane 2;

[0007] Two sliders are fixedly arranged at the output end of the extension plate, the two sliders slide along the parallel slide rails 1 and slide rails 2 respectively, and the sliders on the two extension plates are respectively engaged into the two slide rails 1 and slide rails 2.

[0008] Preferably, a sleeve is fixedly arranged on the adjusting plate. The sleeve is rotatably connected to the rotating shaft, and both ends of the sleeve extend into the inner ring body and the outer ring body respectively. A bevel gear is fixedly arranged at one end of the sleeve close to the inner ring body, and two ring gear mechanisms are rotatably arranged in the inner ring body.

[0009] Preferably, each ring gear mechanism includes a ring gear and a bevel rack. Among them, the ring gear is rotatably arranged in the inner ring body, and a plurality of arc-shaped bevel racks are fixedly arranged on the ring gear at circumferential intervals. The bevel rack meshes with the bevel gear, and the number of bevel racks is 1 / 2 of the number of adjusting plates. The ring gear mechanisms drive a plurality of the adjusting plates to rotate at intervals, and the two ring gear mechanisms cooperate to drive two adjacent adjusting plates to rotate respectively.

[0010] Preferably, a guide block is fixedly arranged on the ring gear, and an arc-shaped hydraulic rod I is fixedly arranged on the guide block. A sliding groove for the guide block to slide is formed on the inner ring body, and an arc-shaped hydraulic chamber I is formed at the end of the sliding groove. The hydraulic rod I slides sealingly along the hydraulic chamber I.

[0011] Preferably, the air cooling mechanism includes a heat dissipation shell, a first fin, a first fin mechanism and a second fin mechanism. Among them, the heat dissipation shell is annular and fixedly arranged on the outside of the liquid cooling mechanism. A plurality of first fins are fixedly arranged in a circle in the heat dissipation shell, and the first fin mechanism and the second fin mechanism are rotatably arranged in the heat dissipation shell.

[0012] Preferably, the first fin mechanism includes a first rotating ring and a second fin. Among them, the first rotating ring is rotatably arranged at one end of the heat dissipation shell close to the air volume adjusting component. A plurality of second fins are fixedly arranged in a circle on the first rotating ring. The second fin is slidably connected to the heat dissipation shell, and both ends of the second fin respectively abut against two inner side surfaces of the heat dissipation shell.

[0013] Preferably, a first limiting block is fixedly arranged on the first rotating ring, and an arc-shaped hydraulic rod II is fixedly arranged on the first limiting block. A first limiting groove for the first limiting block to slide is formed on the heat dissipation shell, and an arc-shaped hydraulic chamber II is formed at the end of the first limiting groove. The hydraulic rod II slides sealingly along the hydraulic chamber II.

[0014] Preferably, the second fin mechanism includes a second rotating ring and a third fin. Among them, the second rotating ring is rotatably arranged at one end of the heat dissipation shell far from the air volume adjusting component. A plurality of third fins of the same size as the second fin are fixedly arranged in a circle on the second rotating ring. A second limiting block is fixedly arranged on the second rotating ring, and a second limiting groove for the second limiting block to slide is formed on the heat dissipation shell.

[0015] Preferably, a third limiting block is fixedly arranged on one side of the second fin close to the second rotating ring. A plurality of third limiting grooves are circumferentially formed in the second rotating ring, and the third limiting block slides along the third limiting grooves.

[0016] Compared with the prior art, the present invention provides a heat dissipation device with free cooling, having the following beneficial effects: through the coordinated cooperation of the liquid cooling mechanism and the air cooling mechanism, the heat dissipation device can select different heat dissipation methods or carry out two heat dissipations in cooperation according to different environments, effectively reducing the influence of environmental factors on the heat dissipation efficiency in the heat dissipation device and improving the climate adaptability of the heat dissipation device. Through the setting of the air volume adjustment component, the air cooling mechanism can achieve two working states of natural air intake and passive air intake, that is, high-efficiency heat dissipation can be achieved for devices with unstable natural wind or in closed and semi-closed spaces, further expanding the application range of the heat dissipation device. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the structure of the air cooling mechanism in the present invention;

[0019] Figure 3 is a schematic diagram of the structure of the heat dissipation shell in the present invention Figure 1 ;

[0020] Figure 4 is a schematic diagram of the structure of the heat dissipation shell in the present invention Figure 2 ;

[0021] Figure 5 is a schematic diagram of the structure of the first fin mechanism in the present invention;

[0022] Figure 6 is a schematic diagram of the structure of the second fin mechanism in the present invention;

[0023] Figure 7 is a schematic diagram of the structure of the air volume adjustment component in the present invention;

[0024] Figure 8 is Figure 7 a schematic enlarged view of the structure of part A in;

[0025] Figure 9 is a schematic diagram of the structure of the inner ring body and the outer ring body in the present invention;

[0026] Figure 10 is a schematic diagram of the structure of the adjusting plate and the extension plate in the present invention;

[0027] In the figure: 1. Main body; 2. Liquid cooling mechanism; 3. Air cooling mechanism; 31. Heat dissipation shell; 311. First limiting groove; 312. Second limiting groove; 32. First fin; 33. First fin mechanism; 331. First rotating ring; 332. Second fin; 333. First limiting block; 334. Second hydraulic rod; 335. Third limiting block; 34. Second fin mechanism; 341. Second rotating ring; 342. Third fin; 343. Second limiting block; 344. Third limiting groove; 4. Air volume adjustment component; 41. Inner ring body; 411. Rotating shaft; 412. First plane; 413. First sliding rail; 42. Outer ring body; 421. Second plane; 422. Second sliding rail; 43. Adjusting plate; 431. Sleeve; 432. Bevel gear; 44. Extension plate; 441. Slide block; 45. Ring gear mechanism; 451. Ring gear; 452. Bevel rack; 453. Guide block; 454. First hydraulic rod. Detailed implementation manner

[0028] Please refer to Figures 1 to 10 In an embodiment of the present invention, a heat dissipation device with free cooling includes a main body 1, a liquid cooling mechanism 2, an air cooling mechanism 3, and an air volume adjustment component 4. Among them, the liquid cooling mechanism 2 is arranged outside the main body 1, the air cooling mechanism 3 is arranged outside the liquid cooling mechanism 2, and an air volume adjustment component 4 is arranged at the input end of the air cooling mechanism 3; the air volume adjustment component 4 includes an inner ring body 41, an outer ring body 42, an adjusting plate 43, and an extension plate 44. Among them, the inner ring body 41 is rotatably arranged on the main body 1, a plurality of rotating shafts 411 are fixedly arranged circumferentially on the outer side of the inner ring body 41, the outer ring body 42 is fixedly connected to the inner ring body 41 through the plurality of rotating shafts 411, an adjusting plate 43 is rotatably arranged on the rotating shaft 411, and extension plates 44 are slidably arranged at both ends of the adjusting plate 43; a plurality of first planes 412 are evenly arranged circumferentially on the outer side surface of the inner ring body 41, a plurality of second planes 421 parallel to the first planes 412 are evenly arranged circumferentially on the inner side surface of the outer ring body 42, and the number of the first planes 412 and the second planes 421 is an even number. Two first sliding rails 413 are opened on the first plane 412, and two second sliding rails 422 parallel to the first sliding rails 413 are opened on the second plane 421; two slide blocks 441 are fixedly arranged at the output end of the extension plate 44, and the two slide blocks 441 slide along the parallel first sliding rails 413 and the second sliding rails 422 respectively, and the slide blocks 441 on the two extension plates 44 are respectively clamped into the two first sliding rails 413 and the second sliding rails 422; a sleeve 431 is fixedly arranged on the adjusting plate 43, the sleeve 431 is rotatably connected to the rotating shaft 411, and both ends of the sleeve 431 extend into the inner ring body 41 and the outer ring body 42 respectively. A bevel gear 432 is fixedly arranged at one end of the sleeve 431 close to the inner ring body 41, and two ring gear mechanisms 45 are rotatably arranged in the inner ring body 41.

[0029] The ring gear mechanism 45 includes a ring gear 451 and bevel racks 452. Among them, the ring gear 451 is rotatably arranged in the inner ring body 41. A plurality of arc-shaped bevel racks 452 are fixedly arranged at circumferential intervals on the ring gear 451. The bevel racks 452 are meshed with the bevel gears 432, and the number of the bevel racks 452 is 1 / 2 of the number of the adjusting plates 43. The ring gear mechanism 45 drives a plurality of the adjusting plates 43 to rotate at intervals. Two ring gear mechanisms 45 cooperate to drive two adjacent adjusting plates 43 to rotate respectively.

[0030] The air-cooling mechanism 3 includes a heat dissipation shell 31, first fins 32, a first fin mechanism 33 and a second fin mechanism 34. Among them, the heat dissipation shell 31 is annular and fixedly arranged outside the liquid-cooling mechanism 2. A plurality of first fins 32 are fixedly arranged circumferentially in the heat dissipation shell 31. A first fin mechanism 33 and a second fin mechanism 34 are rotatably arranged in the heat dissipation shell 31.

[0031] The first fin mechanism 33 includes a first rotating ring 331 and second fins 332. Among them, the first rotating ring 331 is rotatably arranged at one end of the heat dissipation shell 31 close to the air volume adjusting component 4. A plurality of second fins 332 are fixedly arranged circumferentially on the first rotating ring 331. The second fins 332 are slidably connected with the heat dissipation shell 31, and both ends of the second fins 332 respectively abut against two inner side surfaces of the heat dissipation shell 31.

[0032] The second fin mechanism 34 includes a second rotating ring 341 and third fins 342. Among them, the second rotating ring 341 is rotatably arranged at one end of the heat dissipation shell 31 far from the air volume adjusting component 4. A plurality of third fins 342 having the same size as the second fins 332 are fixedly arranged circumferentially on the second rotating ring 341.

[0033] That is to say, a plurality of adjusting plates 43 can be divided into two groups. The two groups of adjusting plates 43 are respectively arranged at intervals on the inner ring body 41. Subsequently, the two groups of adjusting plates 43 are respectively driven by two ring gear mechanisms 45, so that two adjacent adjusting plates 43 can be rotated to two states of the same direction or the opposite direction. When two adjacent adjusting plates 43 are rotated to the opposite direction, the two adjusting plates 43 are arranged in a V shape at this time, that is, the ends of the two adjusting plates 43 are mutually attached, so as to be able to block natural wind. When two adjacent adjusting plates 43 are rotated to the same direction, the inclination directions and angles of all the adjusting plates 43 are the same at this time. At this time, the adjusting plates 43 and the extension plates 44 can be regarded as air guiding vanes, and external natural air can be introduced into the air-cooling mechanism 3 by rotation, so as to realize two working states of natural air induction and passive air induction.

[0034] In addition, setting the extension plates 44 enables the two extension plates 44 to always be located at the ends of the first plane 412 and the second plane 421 under the action of the first slide rail 413 and the second slide rail 422 regardless of how the adjustment plate 43 rotates, that is, to cover the inner ring body 41 and the outer ring body 42, thereby ensuring that the ends of the two adjacent adjustment plates 43 can be fitted when the adjustment plates 43 rotate into a V shape. At the same time, when the adjustment plate 43 and the extension plate 44 are used as air guiding vanes for air guiding, when it is necessary to adjust the air quantity by driving the adjustment plate 43 to rotate, not only will the inclination angle of the adjustment plate 43 change, but also the blade area formed by the adjustment plate 43 and the extension plate 44 will increase and decrease synchronously, thereby making the adjustment range of the air quantity wider and the adjustment faster.

[0035] During implementation, when the air volume in the external environment is sufficient, stable, and the humidity is low, place the air inlet of the air-cooling mechanism 3 in the direction consistent with the wind direction at this time. Subsequently, drive the rotation of multiple adjusting plates 43 by using the two ring gear mechanisms 45, so that natural wind enters the air-cooling mechanism 3 to dissipate heat from the main body 1. During this process, adjust the rotation angle of the adjusting plate 43 according to the heat dissipation requirement to control the air intake volume. At the same time, drive the rotation of the first fin mechanism 33 and drive the second fin mechanism 34 to rotate, so that the second fin 332 and the third fin 342 open or contract, thereby changing the contact area between the natural wind and the air-cooling mechanism 3, so as to more precisely adjust the heat dissipation temperature. When the air volume in the external environment is insufficient but the temperature and humidity are relatively low, at this time, the natural wind cannot enter the air-cooling mechanism 3 naturally. At this time, drive multiple adjusting plates 43 to deflect to the same direction by using the two ring gear mechanisms 45. Subsequently, drive the entire air volume adjustment assembly 4 to rotate. At this time, the external natural wind can be introduced into the air-cooling mechanism 3 to dissipate heat from the main body 1 under the action of the adjusting plate 43 and the extension plate 44. And there are various driving methods for driving the air volume adjustment assembly 4 to rotate. For example, a motor can be fixedly arranged outside the air-cooling mechanism 3, a gear is arranged on the motor, a ring gear is arranged on the outer ring body 42, and the motor drives the gear to rotate and drives the outer ring body 42 and the entire air volume adjustment assembly 4 to rotate. During this process, the inclination angle of the adjusting plate 43 can be adjusted according to the heat dissipation requirement, so as to change the air volume introduced into the air-cooling mechanism 3, thereby realizing two working states of natural air intake and passive air intake of the heat dissipation device. When the external environmental temperature is high and the humidity is high, at this time, drive the rotation of multiple adjusting plates 43 by using the two ring gear mechanisms 45, so that two adjacent adjusting plates 43 deflect in a V-shaped arrangement, thereby enabling the adjusting plate 43 and the extension plate 44 to block the natural wind, so that the natural wind cannot enter the air-cooling mechanism 3. At the same time, drive the rotation of the first fin mechanism 33 and drive the second fin mechanism 34 to rotate, so that the second fin 332 and the third fin 342 contract, avoiding the rust of the fins in a humid environment. At the same time, use the liquid-cooling mechanism 2 to dissipate heat from the main body 1, so that no matter how the external environment changes, the heat dissipation device can maintain a good heat dissipation state, and at the same time, the air-cooling mechanism 3 and the liquid-cooling mechanism 2 can work together simultaneously to further improve the heat dissipation efficiency of the heat dissipation device.

[0036] In this embodiment, as Figure 8 , a guide block 453 is fixedly arranged on the ring gear 451, an arc-shaped first hydraulic rod 454 is fixedly arranged on the guide block 453, a sliding groove for the guide block 453 to slide is opened on the inner ring body 41, an arc-shaped first hydraulic cavity is opened at the end of the sliding groove, and the first hydraulic rod 454 slides sealingly along the first hydraulic cavity.

[0037] In this embodiment, a first limiting block 333 is fixedly arranged on the first rotating ring 331, and an arc-shaped second hydraulic rod 334 is fixedly arranged on the first limiting block 333; a first limiting groove 311 for the first limiting block 333 to slide is formed in the heat dissipation shell 31, and an arc-shaped second hydraulic cavity is formed at the end of the first limiting groove 311, and the second hydraulic rod 334 slides hermetically along the second hydraulic cavity; a second limiting block 343 is fixedly arranged on the second rotating ring 341, and a second limiting groove 312 for the second limiting block 343 to slide is formed in the heat dissipation shell 31; a third limiting block 335 is fixedly arranged on one side of the second fin 332 close to the second rotating ring 341, and a plurality of third limiting grooves 344 are formed in a circumferential manner on the second rotating ring 341, and the third limiting block 335 slides along the third limiting grooves 344.

[0038] During implementation, the second hydraulic rod 334 is driven to slide by changing the hydraulic pressure in the second hydraulic cavity, and the first rotating ring 331 is driven to rotate along the heat dissipation shell 31. When the first rotating ring 331 rotates and the second fin 332 contacts the third fin 342, the second fin 332 can push the third fin 342 to slide together until the second fin 332, the third fin 342, and the first fin 32 are fitted and contracted. When it is necessary to expand the second fin 332 and the third fin 342, the first rotating ring 331 is driven to rotate, so that the second fin 332 rotates. When the second fin 332 rotates, it will drive the third limiting block 335 to slide along the third limiting grooves 344. When the third limiting block 335 slides to the end of the third limiting grooves 344, at this time, the third limiting block 335 can drive the second rotating ring 341 to rotate together, that is, drive the third fin 342 to rotate. At the same time, when the second rotating ring 341 rotates, the second limiting block 343 can slide along the second limiting groove 312. When the second fin 332 is fully expanded, at this time, the second limiting block 343 just slides to the end of the second limiting groove 312, so that the position of the third fin 342 can be fixed under the action of the second limiting block 343 and the third limiting block 335, avoiding the rotation of the third fin 342 during the heat dissipation process and affecting the heat dissipation efficiency. At the same time, the entire first fin mechanism 33 and the second fin mechanism 34 can be driven to rotate only by hydraulic pressure, realizing the contraction and expansion of the fins.

[0039] To sum up, when the present invention is implemented, through the coordinated cooperation of the liquid cooling mechanism 2 and the air cooling mechanism 3, the heat dissipation device can select different heat dissipation methods or the two heat dissipations cooperate with each other according to different environments, effectively reducing the influence of environmental factors on the heat dissipation efficiency of the heat dissipation device and improving the climate adaptability of the heat dissipation device. Through the setting of the air volume adjustment component 4, the air cooling mechanism 3 can realize two working states of natural air intake and passive air intake, that is, high-efficiency heat dissipation can be realized for equipment with unstable natural wind or in closed and semi-closed spaces, further expanding the application range of the heat dissipation device.

[0040] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A free-cooling heat dissipation device, characterized in that, Including: A main body (1), a liquid cooling mechanism (2), an air cooling mechanism (3), and an air volume adjusting component (4). Among them, the liquid cooling mechanism (2) is arranged outside the main body (1), the air cooling mechanism (3) is arranged outside the liquid cooling mechanism (2), and the air volume adjusting component (4) is arranged at the input end of the air cooling mechanism (3); The air volume adjusting component (4) includes an inner ring body (41), an outer ring body (42), an adjusting plate (43), and an extension plate (44). Among them, the inner ring body (41) is rotatably arranged on the main body (1), a plurality of rotating shafts (411) are fixedly arranged in a circumferential manner on the outer side of the inner ring body (41), the outer ring body (42) is fixedly connected to the inner ring body (41) through the plurality of rotating shafts (411), an adjusting plate (43) is rotatably arranged on the rotating shaft (411), and extension plates (44) are slidably arranged at both ends of the adjusting plate (43).

2. The free-cooling heat dissipation device according to claim 1, characterized in that A plurality of first planes (412) are evenly arranged in a circumferential manner on the outer side surface of the inner ring body (41), a plurality of second planes (421) parallel to the first planes (412) are evenly arranged in a circumferential manner on the inner side surface of the outer ring body (42), and the number of the first planes (412) and the second planes (421) is an even number. Two first slide rails (413) are arranged on the first plane (412), and two second slide rails (422) parallel to the first slide rails (413) are arranged on the second plane (421); Two sliders (441) are fixedly arranged at the output end of the extension plate (44), the two sliders (441) slide along the parallel first slide rails (413) and the second slide rails (422) respectively, and the sliders (441) on the two extension plates (44) are respectively clamped into the two first slide rails (413) and the second slide rails (422).

3. The free cooling heat dissipation device according to claim 2, characterized in that, A sleeve (431) is fixedly arranged on the adjusting plate (43), the sleeve (431) is rotatably connected to the rotating shaft (411), and both ends of the sleeve (431) extend into the inner ring body (41) and the outer ring body (42) respectively. A bevel gear (432) is fixedly arranged at one end of the sleeve (431) close to the inner ring body (41), and two ring gear mechanisms (45) are rotatably arranged in the inner ring body (41).

4. A free-cooling heat dissipation device according to claim 3, characterized in that, The ring gear mechanism (45) includes a ring gear (451) and a bevel rack (452). Among them, the ring gear (451) is rotatably arranged in the inner ring body (41), a plurality of arc-shaped bevel racks (452) are fixedly arranged at circumferential intervals on the ring gear (451), the bevel rack (452) is meshed with the bevel gear (432), and the number of the bevel racks (452) is 1 / 2 of the number of the adjusting plates (43). The ring gear mechanism (45) drives a plurality of the adjusting plates (43) to rotate at intervals, and the two ring gear mechanisms (45) cooperate to drive two adjacent adjusting plates (43) to rotate respectively.

5. A free-cooling heat dissipation device according to claim 4, characterized in that, A guide block (453) is fixedly arranged on the toothed ring (451). An arc-shaped hydraulic rod one (454) is fixedly arranged on the guide block (453). A chute for the guide block (453) to slide is formed on the inner ring body (41). An arc-shaped hydraulic chamber one is formed at the end of the chute. The hydraulic rod one (454) slides in a sealed manner along the hydraulic chamber one.

6. The free-cooling heat dissipation device according to claim 1, characterized in that The air cooling mechanism (3) includes a heat dissipation shell (31), fins one (32), fin mechanism one (33) and fin mechanism two (34). Among them, the heat dissipation shell (31) is annular and fixedly arranged on the outside of the liquid cooling mechanism (2). A plurality of fins one (32) are fixedly arranged in a circumferential manner in the heat dissipation shell (31). A fin mechanism one (33) and a fin mechanism two (34) are rotatably arranged in the heat dissipation shell (31).

7. A free cooling heat dissipation device according to claim 6, characterized in that, The fin mechanism one (33) includes a rotating ring one (331) and fins two (332). Among them, the rotating ring one (331) is rotatably arranged at one end of the heat dissipation shell (31) close to the air volume adjusting assembly (4). A plurality of fins two (332) are fixedly arranged in a circumferential manner on the rotating ring one (331). The fins two (332) are slidably connected with the heat dissipation shell (31), and the two ends of the fins two (332) respectively abut against the two inner side surfaces of the heat dissipation shell (31).

8. The free cooling heat dissipation device according to claim 7, characterized in that, A limit block one (333) is fixedly arranged on the rotating ring one (331). An arc-shaped hydraulic rod two (334) is fixedly arranged on the limit block one (333); A limit groove one (311) for the limit block one (333) to slide is formed on the heat dissipation shell (31). An arc-shaped hydraulic chamber two is formed at the end of the limit groove one (311). The hydraulic rod two (334) slides in a sealed manner along the hydraulic chamber two.

9. The free-cooling heat dissipation device according to claim 7, characterized in that The fin mechanism two (34) includes a rotating ring two (341) and fins three (342). Among them, the rotating ring two (341) is rotatably arranged at one end of the heat dissipation shell (31) far from the air volume adjusting assembly (4). A plurality of fins three (342) having the same size as the fins two (332) are fixedly arranged in a circumferential manner on the rotating ring two (341); A limit block two (343) is fixedly arranged on the rotating ring two (341). A limit groove two (312) for the limit block two (343) to slide is formed on the heat dissipation shell (31).

10. A free-cooling heat dissipation device according to claim 9, characterized in that, A limit block three (335) is fixedly arranged on the side of the fins two (332) close to the rotating ring two (341). A plurality of limit grooves three (344) are formed in a circumferential manner on the rotating ring two (341). The limit block three (335) slides along the limit grooves three (344).

Images