Air-cooling heat dissipation device and electronic equipment

Abstract

The invention provides an air cooling heat dissipation device which comprises a fan and a heat dissipation device, the heat dissipation device comprises a first heat dissipation fin set and a second heat dissipation fin set, the first heat dissipation fin set is provided with a first heat dissipation channel, and the second heat dissipation fin set is provided with a second heat dissipation channel. The first heat dissipation channels are closer to the fan than the second heat dissipation channels, and the first heat dissipation channels are communicated with the adjacent second heat dissipation channels; when the fan operates, outside air can be sucked to pass through the first heat dissipation channel of the radiator and the adjacent second heat dissipation channel, and the outside air is shunted and converged in the process of passing through the second heat dissipation channel from the first heat dissipation channel. The invention further provides electronic equipment provided with the air cooling heat dissipation device.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation of electronic equipment, and in particular to an air-cooling heat dissipation device and electronic equipment provided with the air-cooling heat dissipation device. Background Art

[0002] As the functions of portable electronic devices continue to improve, the power consumption of portable electronic devices continues to increase. Currently, portable electronic devices generally use micro fans for active air cooling and heat dissipation. This active air cooling can drive the external cold air medium to take away the heat inside the portable electronic device, and has a good heat dissipation effect. The existing active air cooling and heat dissipation solutions are mainly divided into two categories. The first type of active air cooling and heat dissipation solution includes: a fan and a heat dissipation channel. The heat dissipation channel is connected to the heater in the portable electronic device. The fan sucks the external cold air through the heat dissipation channel for heat exchange, and then the air after heat exchange is discharged from the air outlet of the portable electronic device; the second type of active air cooling and heat dissipation solution includes: a fan, an air duct and a heat dissipation fin, wherein the air duct is an air flow path. The heat generated by the heating device in the portable electronic device when working is transferred to the heat dissipation fin through the heat transfer device. The fan sucks the external cold air to exchange heat with the heat dissipation fin. However, in the existing first type of active air cooling heat dissipation solution, the outside cold air sucked by the fan directly passes through the heat dissipation channel and has low heat dissipation efficiency. In the second type of active air cooling heat dissipation solution, the outside cold air sucked by the fan exchanges heat with the heat dissipation fins, but the heat dissipation fins are a straight structure, which has limited improvement on the heat dissipation efficiency of portable electronic devices. Summary of the invention

[0003] The present application provides an air-cooling heat dissipation device with good heat dissipation efficiency, and an electronic device provided with the air-cooling heat dissipation device.

[0004] The present application provides an air-cooled heat dissipation device, which includes a fan and a radiator, wherein the radiator includes a first heat dissipation fin group and a second heat dissipation fin group, the first heat dissipation fin group has a first heat dissipation channel, the second heat dissipation fin group has a second heat dissipation channel, the first heat dissipation channel is closer to the fan than the second heat dissipation channel, and the first heat dissipation channel is connected to the adjacent second heat dissipation channel; when the fan is running, it can draw outside air through the first heat dissipation channel and the adjacent second heat dissipation channel of the radiator, and the outside air is divided and converged in the process of passing from the first heat dissipation channel to the second heat dissipation channel.

[0005] The present application also provides an electronic device, which includes an air-cooled heat dissipation device and a shell, the air-cooled heat dissipation device includes a fan and a radiator, the radiator includes a first heat dissipation fin group and a second heat dissipation fin group, the first heat dissipation fin group has a first heat dissipation channel, the second heat dissipation fin group has a second heat dissipation channel, the first heat dissipation channel is closer to the fan than the second heat dissipation channel, and the first heat dissipation channel is connected to the adjacent second heat dissipation channel; when the fan is running, it can draw outside air through the first heat dissipation channel and the adjacent second heat dissipation channel of the radiator, and the outside air is divided and converged in the process of passing from the first heat dissipation channel to the second heat dissipation channel, and the air-cooled heat dissipation device is arranged on the shell.

[0006] The first heat dissipation channel of the radiator of the air-cooled heat dissipation device of the present invention is connected with the adjacent second heat dissipation channel, and the outside air is sucked into the radiator by the operation of the fan. The outside air can be diverted and converged from the first heat dissipation channel to the adjacent second heat dissipation channel, so that the outside air and the heat on the radiator are forced to exchange heat; the outside air sucked by the fan during operation of the present application can be diverted and converged to the second heat dissipation channel after passing through the first heat dissipation channel, so that the outside air is blocked in the process of flowing through the radiator, thereby extending the heat exchange time between the outside air and the radiator, and increasing the heat exchange contact area between the outside air and the radiator, thereby improving the heat exchange efficiency of the radiator to achieve more efficient heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the implementation. Obviously, the drawings described below are some implementations of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0008] Figure 1 is a schematic diagram of the three-dimensional structure of the air-cooling heat dissipation device in the first embodiment of the present application;

[0009] Figure 2 yes Figure 1 A schematic diagram of the exploded three-dimensional structure of the air-cooled heat dissipation device;

[0010] Figure 3 yes Figure 2 A further schematic diagram of the three-dimensional structure decomposition of the air-cooling heat dissipation device;

[0011] Figure 4 yes Figure 3 A schematic diagram of a three-dimensional structure of the air-cooling heat dissipation device from another perspective;

[0012] Figure 5 yes Figure 3A magnified three-dimensional structure of the radiator;

[0013] Figure 6 yes Figure 5 A schematic diagram of a three-dimensional structure of the radiator from another perspective;

[0014] Figure 7 yes Figure 5 A three-dimensional cross-sectional view of a radiator in FIG.

[0015] Figure 8 yes Figure 6 A three-dimensional cross-sectional view of a radiator in FIG.

[0016] Fig. 9 yes Figure 7 A cross-sectional view of the radiator in FIG.

[0017] Fig.10 yes Figure 1 One of the three-dimensional cross-sectional views of the air-cooling heat dissipation device;

[0018] Fig.11 yes Figure 1 Another three-dimensional cross-sectional view of the air-cooled heat sink in FIG.

[0019] Fig.12 yes Fig.10 A cross-sectional view of an air-cooled heat sink in FIG.

[0020] Fig.13 is a schematic diagram of the exploded three-dimensional structure of the air-cooling heat dissipation device in the second embodiment of the present application;

[0021] Fig.14 yes Fig.13 A further schematic diagram of the three-dimensional structure decomposition of the air-cooling heat dissipation device;

[0022] Fig.15 yes Fig.14 A schematic diagram of the three-dimensional structure of the radiator;

[0023] Fig.16 yes Fig.15 A three-dimensional cross-sectional view of a radiator in FIG.

[0024] Fig.17 yes Fig.13 One of the three-dimensional cross-sectional views of the air-cooling heat dissipation device;

[0025] Fig.18 yes Fig.13 Another three-dimensional cross-sectional view of the air-cooled heat sink in FIG.

[0026] Fig.19 yes Fig.17 A cross-sectional view of an air-cooled heat sink in FIG.

[0027] Fig. 20 It is a schematic diagram of the three-dimensional structure of an electronic device in one embodiment of the present application.

[0028] Main markings:

[0029] 100, air-cooled heat dissipation device; 20, fan; 40, radiator; 42, first heat dissipation fin group; 420, first heat dissipation channel; 421, first heat dissipation frame; 422, first heat dissipation fin; 423, first top heat dissipation fin; 424, first air guide; 425, first heat conductive plate; 43, first ventilation slot; 44, second heat dissipation fin group; 440, second heat dissipation channel; 441, second heat dissipation frame; 442, second heat dissipation fin; 443, second top heat dissipation fin; 444, second air guide; 445, second heat conductive plate; 446, third air guide; 45, first wind blocking column; 46, third heat dissipation fin group; 460, third heat dissipation channel; 462, third heat dissipation fin; 463, third top 465, third heat conducting plate; 466, fourth air guiding plate; 47, second ventilation slot; 48, second wind blocking column; 49, heat dissipation frame; 492, bottom side plate; 494, top side plate; 496, end side plate; 50, heat conducting seat; 52, first heat conducting plate; 522, first heat conducting surface; 54, second heat conducting plate; 542, second heat conducting surface; 60, support frame; 62, support plate; 64, first connecting part; 642, first supporting plate; 644, first connecting plate; 645, first connecting hole; 80, air guiding cover; 82, top cover plate; 822, air inlet; 83, air guiding slot; 84, side plate; 85, end plate; 86, second connecting part; 862, second connecting hole; 87, receiving space. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In addition, the following descriptions of the various embodiments are made with reference to the attached drawings to illustrate specific embodiments that the present application may be implemented in. Directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Please also read Figures 1 to 4 The air-cooling heat dissipation device 100 in the first embodiment of the present invention includes a fan 20, a heat sink 40, a heat conductive seat 50, a support frame 60 and an air guide cover 80. The heat sink 40 is arranged on the heat conductive seat 50, the fan 20 is arranged at one end of the support frame 60, the heat sink 40 and the heat conductive seat 50 are located at the other end of the support frame 60, and the air guide cover 80 covers the fan 20, the heat sink 40 and the support frame 60; the heat sink 40 includes a first heat dissipation fin group 42 and a second heat dissipation fin group 44, the first heat dissipation fin group 42 has a first heat dissipation channel 420, the second heat dissipation fin group 44 has a second heat dissipation channel 440, the first heat dissipation channel 420 is closer to the fan 20 than the second heat dissipation channel 440, and the first heat dissipation channel 420 is connected to the adjacent second heat dissipation channel 440. In this embodiment, the first heat dissipation channel 420 is connected with two adjacent second heat dissipation channels 440; when the fan 20 is in operation, it can draw outside air through the first heat dissipation channel 420 and the adjacent second heat dissipation channels 440 of the radiator 40. Specifically, when the fan 20 is in operation, it can draw outside air through the first heat dissipation channel 420 and the adjacent two second heat dissipation channels 440 of the radiator 40; the outside air is divided and converged in the process of passing from the first heat dissipation channel 420 to the second heat dissipation channel 440. In this embodiment, one of the first heat dissipation channels 420 is connected with two adjacent second heat dissipation channels 440, and the outside air passing through the first heat dissipation channel 420 can be divided to the two adjacent second heat dissipation channels 440. The two adjacent first heat dissipation channels 420 are both connected to the corresponding second heat dissipation channels 440, and the outside air passing through the two adjacent first heat dissipation channels 420 can converge to the corresponding second heat dissipation channels 440.

[0034] It should be noted that the air-cooled heat dissipation device 100 can be installed on a portable electronic device, and the air-cooled heat dissipation device 100 is used to dissipate heat for the portable electronic device. The portable electronic device may be, but is not limited to, a mobile phone, a tablet computer, a smart watch, a VR head-mounted display, a smart wearable device, and the like. The "connection" in the description of the embodiment of the present invention includes both direct connection and indirect connection. For example, the connection between A and B includes direct connection between A and B or connection through a third element C or more other elements. The connection also includes two situations: an integrated connection and a non-integrated connection. An integrated connection means that A and B are formed and connected as one, and a non-integrated connection means that A and B are formed and connected as a non-integrated connection.

[0035] The first heat dissipation channel 420 of the radiator 40 of the air-cooled heat dissipation device 100 of the present invention is connected with the adjacent second heat dissipation channel 440, and the outside air is sucked into the radiator 40 by the operation of the fan 20, and the outside air can be diverted and converged from the first heat dissipation channel 420 to the adjacent second heat dissipation channel 440, and the outside air is forced to exchange heat with the heat on the radiator 40; compared with the radiator with straight heat dissipation fins in the prior art, the outside air directly flows through the heat dissipation channel surrounded by two adjacent straight heat dissipation fins; the first heat dissipation channel 420 and the second heat dissipation channel 440 of the radiator 40 of the present application are staggered with each other, and the outside air sucked by the fan 20 is diverted and converged to the second heat dissipation channel 440 after passing through the first heat dissipation channel 420, so that the outside air is blocked in the process of flowing through the radiator 40, prolonging the heat exchange time between the outside air and the radiator 40, and increasing the heat exchange contact surface between the outside air and the radiator 40, thereby improving the heat exchange efficiency of the radiator 40 to achieve more efficient heat exchange.

[0036] Please also read Figure 2 , Figure 5-Figure 9, the first heat dissipation fin group 42 is closer to the fan 20 than the second heat dissipation fin group 44, the first heat dissipation channel 420 is parallel to the second heat dissipation channel 440; the outside air in one of the two adjacent first heat dissipation channels 420 is divided to the corresponding two second heat dissipation channels 440, and the outside air in the two adjacent first heat dissipation channels 420 is divided to the corresponding second heat dissipation channel 440. Specifically, each of the two adjacent first heat dissipation channels 420 is connected with the corresponding second heat dissipation channel 440, and the outside air passing through the two adjacent first heat dissipation channels 420 can be converged to the corresponding second heat dissipation channel 440; each first heat dissipation channel 420 is connected with the two adjacent second heat dissipation channels 440, and the outside air passing through the first heat dissipation channel 420 can be divided to the two adjacent second heat dissipation channels 440. A part of the space of each first heat dissipation channel 420 is connected to one of the adjacent second heat dissipation channels 440, and another part of the space of the first heat dissipation channel 420 is connected to another adjacent second heat dissipation channel 440. In this embodiment, half of the space of each first heat dissipation channel 420 is connected to one of the adjacent second heat dissipation channels 440 , and the other half of the space of the first heat dissipation channel 420 is connected to another adjacent second heat dissipation channel 440 .

[0037] Optionally, the first heat dissipation fin group 42 includes a plurality of first heat dissipation fins 422, which are arranged at intervals along the first direction, and a first heat dissipation channel 420 is formed between each adjacent two first heat dissipation fins 422; the second heat dissipation fin group 44 includes a plurality of second heat dissipation fins 442, which are arranged at intervals along the first direction, and a second heat dissipation channel 440 is formed between each adjacent two second heat dissipation fins 442. The first heat sink fin group 42 also includes a plurality of first top heat sink fins 423 and a plurality of first heat conductive sheets 425. The first heat sink fins 422 are connected to opposite sides of the first top heat sink fin 423 respectively. The first top heat sink fin 423 and the two first heat sink fins 422 connected thereto form a first heat sink frame 421. The two first heat sink fins 422 of the first heat sink frame 421 form a first heat sink channel 420. Every two adjacent first heat sink frames 421 are spaced apart, and every two adjacent first heat sink frames 421 are connected by the first heat conductive sheet 425. The inner cavity of the first heat sink frame 421 forms a first heat sink channel 420. The first heat sink fins 422 of every two adjacent first heat sink frames 421 form a first heat sink channel 420. The second heat sink fin group 44 includes a plurality of A second top heat dissipation fin 443 and a plurality of second heat conductive sheets 445, the second top heat dissipation fins 442 are respectively connected to the opposite sides of the second top heat dissipation fin 443, the second top heat dissipation fin 443 and the two second heat dissipation fins 442 connected thereto form a second heat dissipation frame 441, the two second heat dissipation fins 442 of the second heat dissipation frame 441 form a second heat dissipation channel 440, every two adjacent second heat dissipation frames 441 are spaced apart, every two adjacent second heat dissipation frames 441 are connected by the second heat conductive sheet 445, the inner cavity of the second heat dissipation frame 441 forms a second heat dissipation channel 440, the second heat dissipation fins 442 of every two adjacent second heat dissipation frames 441 form a second heat dissipation channel 440, and the plurality of first heat dissipation frames 421 are respectively staggered with the plurality of second heat dissipation frames 441. The multiple first heat dissipation frames 421 correspond to the multiple second heat dissipation frames 441 one by one, that is, each first heat dissipation frame 421 is staggered with the corresponding second heat dissipation frame 441, and the first heat dissipation channel 420 of the first heat dissipation frame 421 is respectively connected to the second heat dissipation channel 440 of the adjacent second heat dissipation frame 441 and the second heat dissipation channel 440 between two adjacent second heat dissipation frames 441; the first heat dissipation channel 420 between two adjacent first heat dissipation frames 421 is respectively connected to the second heat dissipation channel 440 of the adjacent second heat dissipation frame 441 and the second heat dissipation channel 440 surrounded by two adjacent second heat dissipation frames 441.

[0038] Optionally, a plurality of first heat dissipation frames 421 are arranged at intervals along the first direction, and a plurality of second heat dissipation frames 441 are arranged at intervals along the first direction; the length direction of the first heat dissipation channel 420 and the length direction of the second heat dissipation channel 440 are both parallel to the second direction, and the first direction is perpendicular to the second direction. In this embodiment, a plurality of first heat dissipation frames 421 are arranged at even intervals along the first direction, and a plurality of second heat dissipation frames 441 are arranged at even intervals along the first direction. The first heat conductive sheet 425 is connected to the adjacent second heat conductive sheet 445, and the plurality of first heat conductive sheets 425 and the plurality of second heat conductive sheets 445 are all located on the same side of the radiator 40, so that the plurality of first heat dissipation frames 421 and the plurality of second heat dissipation frames 441 are connected as one.

[0039] The first top heat sink fin 423 and the first heat sink fin 422 are both strip-shaped sheets, and the two first heat sink fins 422 are respectively connected to the opposite sides of the first top heat sink fin 423, and the first top heat sink fin 423 and the two first heat sink fins 422 form a first heat dissipation channel 420; the first heat conductive sheet 425 is connected to the ends of the first heat sink fins 422 of the two adjacent first heat sink frames 421 away from the first top heat sink fin 423, and the first heat conductive sheet 425 and the first heat sink fins 422 of the two first heat sink frames 421 connected thereto form a first heat dissipation channel 420; The second top heat sink fin 443 and the second heat sink fin 442 are both strip-shaped pieces. The two second heat sink fins 442 are respectively connected to the opposite sides of the second top heat sink fin 443. The second top heat sink fin 443 and the two second heat sink fins 442 form a second heat dissipation channel 440. The second heat conductive sheet 445 is connected to the ends of the second heat sink fins 442 of the two adjacent second heat sink frames 441 away from the second top heat sink fin 443. The second heat conductive sheet 445 and the second heat sink fins 442 of the two second heat sink frames 441 connected thereto form a second heat dissipation channel 440.

[0040] In this embodiment, the first top heat sink fin 423, the second top heat sink fin 443, the first heat conductive sheet 425 and the second heat conductive sheet 445 are all rectangular sheets, the first heat sink fin 422 and the second heat sink fin 442 are all rectangular sheets, the two first heat sink fins 422 are respectively vertically connected to the opposite sides of the first top heat sink fin 423, and the two first heat sink fins 422 and the first top heat sink fin 423 form a rectangular first heat dissipation channel 420; the two first heat sink fins 422 are respectively perpendicular to the first heat conductive sheet 425, the first heat conductive sheet 425 and the two first heat sink fins 422 form a rectangular first heat dissipation channel 420; the two second heat sink fins 442 are respectively vertically connected to the opposite sides of the second top heat sink fin 443, and the two second heat sink fins 442 and the second top heat sink fin 443 form a rectangular second heat dissipation channel 440; the two second heat sink fins 442 are respectively perpendicular to the second heat conductive sheet 445, and the second heat conductive sheet 445 and the two second heat sink fins 442 form a rectangular second heat dissipation channel 440.

[0041] Optionally, the first heat dissipation frame 421 and the adjacent second heat dissipation frame 441 are mutually staggered, and the two first heat dissipation fins 422 of the first heat dissipation frame 421 are respectively facing the two adjacent second heat dissipation channels 440, and the two second heat dissipation fins 442 of the second heat dissipation frame 441 are respectively facing the two adjacent first heat dissipation channels 420, so as to facilitate the diversion and convergence of external air between the first heat dissipation channel 420 and the second heat dissipation channel 440. In this embodiment, the two first heat dissipation fins 422 of the first heat dissipation frame 421 are respectively facing the middle of the two adjacent second heat dissipation channels 440, so as to evenly divert and evenly converge the external air between the first heat dissipation channel 420 and the second heat dissipation channel 440, thereby further improving the heat dissipation efficiency of the radiator 40.

[0042] Optionally, the first heat conductive sheet 425 is connected to the second heat conductive sheet 445, and the first heat conductive sheet 425 and the second heat conductive sheet 445 are coplanar, so that the first heat conductive sheet 425 and the second heat conductive sheet 445 are both attached to the thermal seat 50; the first top heat dissipating fin 423 is connected to the second top heat dissipating fin 443, and the first top heat dissipating fin 423 and the second top heat dissipating fin 443 are coplanar.

[0043] like Figure 5-Figure 9As shown, the radiator 40 further includes a third heat dissipation fin group 46, which is located on the side of the second heat dissipation fin group 44 away from the first heat dissipation fin group 42; the third heat dissipation fin group 46 has a third heat dissipation channel 460, which is connected to the adjacent second heat dissipation channel 440; the second heat dissipation channel 440 is connected to two adjacent third heat dissipation channels 460; the outside air passing through the second heat dissipation channel 440 can be divided and converged to the adjacent third heat dissipation channel 460. Specifically, when the fan 20 is running, it can draw outside air through the first heat dissipation channel 420 of the radiator 40, divide and converge through the second heat dissipation channel 440, and the outside air is divided and converged again to the third heat dissipation channel 460. In this embodiment, each second heat dissipation channel 440 is connected to two adjacent third heat dissipation channels 460, and the outside air passing through the second heat dissipation channel 440 can be diverted to the two adjacent third heat dissipation channels 460. The two adjacent second heat dissipation channels 440 are both connected to the corresponding third heat dissipation channels 460, and the outside air passing through the two adjacent second heat dissipation channels 440 can be converged to the corresponding third heat dissipation channel 460. Therefore, the outside air sucked by the fan 20 is diverted and converged to the second heat dissipation channel 440 after passing through the first heat dissipation channel 420, and is diverted and converged to the third heat dissipation channel 460 after passing through the second heat dissipation channel 440, so that the outside air is diverted and converged twice in the process of flowing through the radiator 40, and the outside air is blocked multiple times in the radiator 40, which further prolongs the heat exchange time between the outside air and the radiator 40, and can further increase the heat exchange contact surface between the outside air and the radiator 40, thereby further improving the heat exchange efficiency of the radiator 40, so as to achieve a more efficient heat exchange effect.

[0044] The second heat dissipation fin group 44 is located between the first heat dissipation fin group 42 and the third heat dissipation fin group 46. The third heat dissipation channel 460 is parallel to the second heat dissipation channel 440. The outside air in one of the two adjacent second heat dissipation channels 440 is divided to the corresponding two third heat dissipation channels 460, and the outside air in the two adjacent second heat dissipation channels 440 is divided to the corresponding third heat dissipation channel 460. Specifically, each two adjacent second heat dissipation channels 440 are connected with the corresponding third heat dissipation channel 460, and the outside air passing through the two adjacent second heat dissipation channels 440 can be converged to the corresponding third heat dissipation channel 460; each second heat dissipation channel 440 is connected with the two adjacent third heat dissipation channels 460, and the outside air after passing through the second heat dissipation channel 440 can be divided to the two adjacent third heat dissipation channels 460. A part of the space of each second heat dissipation channel 440 is connected to one of the adjacent third heat dissipation channels 460, and another part of the space of the second heat dissipation channel 440 is connected to another adjacent third heat dissipation channel 460. In this embodiment, half of the space of each second heat dissipation channel 440 is connected to one of the adjacent third heat dissipation channels 460 , and the other half of the space of the second heat dissipation channel 440 is connected to another adjacent third heat dissipation channel 460 .

[0045] Optionally, the third heat dissipation fin group 46 includes a plurality of third heat dissipation fins 462, a plurality of third top heat dissipation fins 463 and a plurality of third heat conductive sheets 465, the plurality of third heat dissipation fins 462 are arranged at intervals along the first direction, and a third heat dissipation channel 460 is formed between each adjacent two third heat dissipation fins 462; third heat dissipation fins 462 are respectively connected to the opposite sides of the third top heat dissipation fins 463, the third top heat dissipation fins 463 and the two third heat dissipation fins 462 connected thereto form a third heat dissipation frame 461, the two third heat dissipation fins 462 of the third heat dissipation frame 461 form a third heat dissipation channel 460, each adjacent two third heat dissipation frames 461 are spaced apart, each adjacent two third heat dissipation frames 461 are connected by a third heat conductive sheet 465, the third heat dissipation fins 462 of each adjacent two third heat dissipation frames 461 form a third heat dissipation channel 460, and the plurality of third heat dissipation frames 461 are respectively staggered with the plurality of second heat dissipation frames 441. The multiple third heat dissipation frames 461 correspond to the multiple second heat dissipation frames 441 one by one, that is, each third heat dissipation frame 461 is staggered with the corresponding second heat dissipation frame 441, and the second heat dissipation channel 440 of the second heat dissipation frame 441 is respectively connected to the third heat dissipation channel 460 of the adjacent third heat dissipation frame 461 and the third heat dissipation channel 460 between two adjacent third heat dissipation frames 461; the second heat dissipation channel 440 between two adjacent second heat dissipation frames 441 is respectively connected to the third heat dissipation channel 460 of the adjacent third heat dissipation frame 461 and the third heat dissipation channel 460 surrounded by two adjacent third heat dissipation frames 461.

[0046] Optionally, a plurality of third heat dissipation frames 461 are arranged at intervals along the first direction; and the length direction of the third heat dissipation channel 460 is parallel to the second direction. In this embodiment, a plurality of third heat dissipation frames 461 are arranged at even intervals along the first direction. The third heat conductive sheet 465 is connected to the adjacent second heat conductive sheet 445, and the plurality of third heat conductive sheets 465 and the plurality of second heat conductive sheets 445 are all located on the same side of the radiator 40, so that the plurality of first heat dissipation frames 421, the plurality of second heat dissipation frames 441 and the plurality of third heat dissipation frames 461 are connected together.

[0047] Specifically, the third top heat dissipation fin 463 and the third heat dissipation fin 462 are both strip-shaped pieces, and the two third heat dissipation fins 462 are respectively connected to the opposite sides of the third top heat dissipation fin 463, and the third top heat dissipation fin 463 and the two third heat dissipation fins 462 form a third heat dissipation channel 460; the third heat conductive sheet 465 is connected to the ends of the third heat dissipation fins 462 of the two adjacent third heat dissipation frames 461 away from the third top heat dissipation fin 463, and the third heat conductive sheet 465 and the third heat dissipation fins 462 of the two third heat dissipation frames 461 connected thereto form a third heat dissipation channel 460. In this embodiment, the third top heat sink fin 463 and the third heat conductive sheet 465 are both rectangular sheets, the third heat sink fin 462 is a rectangular sheet, the two third heat sink fins 462 are respectively vertically connected to the opposite sides of the third top heat sink fin 463, and the two third heat sink fins 462 and the third top heat sink fins 463 form a rectangular third heat dissipation channel 460; the two third heat sink fins 462 are respectively perpendicular to the third heat conductive sheet 465, and the third heat conductive sheet 465 and the two third heat sink fins 462 form a rectangular third heat dissipation channel 460.

[0048] Optionally, the third heat dissipation frame 461 and the adjacent second heat dissipation frame 441 are mutually offset, the first heat dissipation frame 421 at the opposite ends of each second heat dissipation frame 441 are opposite to the third heat dissipation frame 461, the two third heat dissipation fins 462 of the third heat dissipation frame 461 are respectively opposite to the two adjacent second heat dissipation channels 440, the two second heat dissipation fins 442 of the second heat dissipation frame 441 are respectively opposite to the two adjacent third heat dissipation channels 460, and the two third heat dissipation fins 462 of the third heat dissipation frame 461 are respectively opposite to the two adjacent second heat dissipation channels 440, so as to facilitate the diversion and convergence of the external air between the second heat dissipation channel 440 and the third heat dissipation channel 460. In this embodiment, the two second heat dissipation fins 442 of the second heat dissipation frame 441 are respectively opposite to the middle of the two adjacent third heat dissipation channels 460, and the two third heat dissipation fins 462 of the third heat dissipation frame 461 are respectively opposite to the two adjacent second heat dissipation channels 440, so as to make the external air evenly diverted and evenly converged between the second heat dissipation channel 440 and the third heat dissipation channel 460, thereby further improving the heat dissipation efficiency of the radiator 40.

[0049] Optionally, the third heat conductive sheet 465 is connected to the second heat conductive sheet 445, and the first heat conductive sheet 425, the second heat conductive sheet 445 and the third heat conductive sheet 465 are coplanar, so that the first heat conductive sheet 425, the second heat conductive sheet 445 and the third heat conductive sheet 465 are all attached to the heat conductive seat 50; the third top heat dissipating fin 463 is connected to the second top heat dissipating fin 443, and the first top heat dissipating fin 423, the second top heat dissipating fin 443 and the third top heat dissipating fin 463 are coplanar. In this embodiment, the radiator 40 is formed by stamping a heat conductive plate or snapping together the fin assembly surface. In other embodiments, the radiator 40 is made of a heat conductive material through one-piece molding, or the first heat dissipating fin group 42, the second heat dissipating fin group 44 and the third heat dissipating fin group 46 of the radiator 40 are connected together by welding technology.

[0050] like Figure 1-Figure 4 As shown, the heat conducting seat 50 includes a first heat conducting plate 52 and a second heat conducting plate 54 arranged on the first heat conducting plate 52. The first heat conducting plate 52 has a first heat conducting surface 522 facing away from the second heat conducting plate 54, and the first heat conducting surface 522 is used to contact the heat generating device to be cooled; the second heat conducting plate 54 has a second heat conducting surface 542 facing away from the first heat conducting plate 52, and the second heat conducting surface 542 is used to fit with the first heat conducting sheet 425, the second heat conducting sheet 445 and the third heat conducting sheet 465.

[0051] The support frame 60 includes a support plate 62 and a first connecting portion 64, and the first connecting portion 64 is arranged on the support plate 62; in this embodiment, the support plate 62 is a rectangular plate, and the two first connecting portions 64 are arranged at intervals on opposite sides of one end of the support plate 62; the first connecting portion 64 includes a first support plate 642 and a first connecting plate 644, one end of the first support plate 642 is connected to the support plate 62, and the first connecting plate 644 is connected to the end of the first support plate 642 away from the support plate 62; a first connecting hole 645 is provided in the middle of the first connecting plate 644.

[0052] The air guide cover 80 includes a top cover plate 82, two side plates 84, an end plate 85 and a second connecting portion 86. The two side plates 84 are arranged on opposite sides of the top cover plate 82, and the end plate 85 is arranged at one end of the top cover plate 82. The top cover plate 82, the two side plates 84 and the end plate 85 enclose a receiving space 87. In this embodiment, the top cover plate 82 is a rectangular plate, the two side plates 84 are vertically connected to the opposite sides of the rectangular plate, the end plate 85 is vertically connected to one end of the rectangular plate, and the two second connecting portions 86 are arranged on opposite sides of one end of the top cover plate 82; the top cover plate 82, the two side plates 84 and the end plate 85 enclose a rectangular receiving space 87. In other embodiments, the top cover plate 82 can be, but is not limited to, a circular plate, a trapezoidal plate, a polygonal plate or an irregular plate. An air inlet 822 is provided at one end of the top cover plate 82, and the air inlet 822 is connected to the receiving space 87. The second connecting portion 86 is a second connecting plate that is recessed toward one side of the receiving space 87 , and a second connecting hole 862 is defined in the second connecting plate.

[0053] Please also read Figure 1-Figure 4 and Figure 10-11 When assembling the air-cooled heat dissipation device 100, the fan 20 is installed on one end of the support plate 62 close to the two first connecting parts 64, the radiator 40 is connected to the second heat-conducting surface 542 of the heat-conducting seat 50, the heat-conducting seat 50 and the radiator 40 are placed on one end of the support frame 60 away from the first connecting part 64, and the air guide cover 80 is covered on the support frame 60, so that the fan 20 and the radiator 40 are accommodated in the receiving space 87 of the air guide cover 80, the air inlet of the fan 20 is directly opposite to the air inlet 822 of the air guide cover 80, and the two second connecting parts 86 are respectively connected to the two first connecting parts 64; specifically, the two first connecting plates 64 4 are respectively attached to the two second connection parts 86, so that the two second connection holes 862 are respectively opposite to the two first connection holes 645, and the two locking pieces respectively pass through the two second connection holes 862 and are locked in the two first connection holes 645; the two side plates 84 are respectively connected to the opposite sides of the support plate 62, the opposite ends of the radiator 40 are respectively connected to the two side plates 84, and the two side plates 84 are respectively connected to the opposite ends of the heat-conducting seat 50, and the end plate 85 is connected to the end of the support plate 62; the air guide cover 80 has an air guide groove 83 between the fan 20 and the radiator 40, and the air guide groove 83 is connected to the first heat dissipation channel 420. In this embodiment, the radiator 40 and the air guide cover 80 are connected by welding. In other embodiments, the radiator 40 and the air guide cover 80 can be made in one piece.

[0054] like Fig.12As shown, when the fan 20 is running, it can draw in the outside air, so that the outside air enters the air guide groove 83 from the air inlet 822 through the fan 20, and the outside air in the air guide groove 83 passes through the first heat dissipation channel 420 through diversion and convergence to the second heat dissipation channel 440. The outside air passing through the second heat dissipation channel 440 is again diverted and converged to the third heat dissipation channel 460, and the outside air is discharged from the radiator 40 through the third heat dissipation channel 460. In the process of the outside air passing through the radiator 40, the outside air exchanges heat with the radiator 40. Specifically, the outside air is diverted and converged in the process of passing from the first heat dissipation channel 420 to the second heat dissipation channel 440. The outside air is blocked by the first heat dissipation fins 422 and diverted to the second heat dissipation channels 440 on the opposite sides of the first heat dissipation fins 422, which prolongs the heat exchange time between the outside air and the radiator 40, and can increase the heat exchange contact surface between the outside air and the radiator 40, which can improve the heat exchange efficiency of the radiator 40. rate, achieving a more efficient heat exchange function; the outside air is split and converged again in the process of passing from the second heat dissipation channel 440 to the third heat dissipation channel 460, and the outside air is blocked by the third heat dissipation fins 462 and is split to the third heat dissipation channels 460 on the opposite sides of the third heat dissipation fins 462, further extending the heat exchange time between the outside air and the radiator 40, and can further increase the heat exchange contact area between the outside air and the radiator 40, which can further improve the heat exchange efficiency of the radiator 40 and achieve a more efficient heat exchange function.

[0055] In this embodiment, the radiator 40 is disposed at the air outlet of the air guide cover 80; in other embodiments, the radiator 40 is also disposed at the air inlet of the air guide cover 80, or the radiator 40 is respectively disposed at the air outlet and the air inlet of the air guide cover 80. In other embodiments, the radiator 40 and the air guide cover 80 can be integrally formed.

[0056] like Figure 13-Figure 16 As shown, the structure of the air-cooling heat dissipation device 100a in the second embodiment of the present application is similar to that of the air-cooling heat dissipation device 100 in the first embodiment, except that the specific structure of the radiator 40a of the air-cooling heat dissipation device 100a in the second embodiment is the same as that of the radiator 40 of the air-cooling heat dissipation device 100 in the first embodiment. Specifically:

[0057] The first heat dissipation fin group 42a of the radiator 40a is closer to the fan 20 than the second heat dissipation fin group 44a. The first heat dissipation fin group 42a includes a plurality of first heat dissipation fins 422a, and the second heat dissipation fin group 44a includes a plurality of second heat dissipation fins 442a. The plurality of first heat dissipation fins 422a are arranged in a spaced relationship along a first direction, and a first heat dissipation channel 420a is formed between each adjacent two first heat dissipation fins 422a; the plurality of second heat dissipation fins 442a are arranged in a spaced relationship along the first direction, and a second heat dissipation channel 440a is formed between each adjacent two second heat dissipation fins 442a; the plurality of first heat dissipation fins 422a correspond to the plurality of second heat dissipation fins 442a respectively, and a first ventilation slot 43 is provided between each first heat dissipation fin 422a and an adjacent second heat dissipation fin 442a, and the first heat dissipation channel 420a is connected to the adjacent second heat dissipation channel 440a through the first ventilation slot 43. In this embodiment, multiple first heat dissipation fins 422a are evenly spaced apart along the first direction, multiple second heat dissipation fins 442a are evenly spaced apart along the first direction, multiple first heat dissipation fins 422a are respectively opposite to multiple second heat dissipation fins 442a, the first heat dissipation fins 422a are parallel to the second heat dissipation fins 442a, the first heat dissipation channel 420a is parallel to the second heat dissipation channel 440a, and a first ventilation slot 43 is formed between a side of each first heat dissipation fin 422a away from the fan 20 and a side of the corresponding second heat dissipation fin 442a close to the fan 20.

[0058] In this embodiment, the first heat dissipation fin 422a and the second heat dissipation fin 442a are both rectangular pieces, and the rectangular pieces are perpendicular to the first direction. In other embodiments, the first heat dissipation fin 422a and the second heat dissipation fin 442a can also be but not limited to arc pieces or curved pieces.

[0059] Optionally, a first air guide fin 424 is provided on the side of the first heat dissipation fin 422a facing away from the fan 20, and the first air guide fin 424 is inclined from the first heat dissipation fin 422a to the adjacent second heat dissipation channel 440a; a second air guide fin 444 is provided on the side of the second heat dissipation fin 442a close to the first heat dissipation fin 422a, and the second air guide fin 444 is inclined from the second heat dissipation fin 442 to the adjacent first heat dissipation channel 420a, the first air guide fin 424 and the second air guide fin 444 form a first ventilation slot 43, part of the external air in the first heat dissipation channel 420a is diverted to the adjacent second heat dissipation channel 440a through the first ventilation slot 43, the first air guide fin 424 is used to guide part of the external air in the first heat dissipation channel 420a to the adjacent second heat dissipation channel 440a, and the second air guide fin 444 is used to guide part of the external air in the first heat dissipation channel 420a to the adjacent second heat dissipation channel 440a.

[0060] Specifically, the first heat dissipation fin 422a and the adjacent second heat dissipation fin 442a are arranged at intervals along the second direction, and the first heat dissipation fin 422a is closer to the fan 20 than the second heat dissipation fin 442a; the length direction of the first heat dissipation channel 420a is parallel to the second direction, the inclination direction of the first air guide fin 424 intersects with the inclination direction of the second air guide fin 444, and the first air guide fin 424 and the second air guide fin 444 on both sides of the first ventilation slot 43 are located on the same side of the first heat dissipation fin 422a. Optionally, the inclination angle of the first air guide fin 424 relative to the first heat dissipation fin 422a ranges from greater than 0 degrees to less than 90 degrees. Preferably, the inclination angle of the first air guide fin 424 relative to the first heat dissipation fin 422a ranges from 20 degrees to 60 degrees. In this embodiment, the inclination angle of the first air guide fin 424 relative to the first heat dissipation fin 422a is 25 degrees. Optionally, the inclination angle range of the second air guide 444 relative to the second heat dissipation fin 442a is greater than 0 degree and less than 90 degrees. Preferably, the inclination angle range of the second air guide 444 relative to the second heat dissipation fin 442a is between 20 degrees and 60 degrees. In this embodiment, the inclination angle of the second air guide 444 relative to the second heat dissipation fin 442a is 25 degrees.

[0061] Optionally, the radiator 40a also includes a plurality of first air-blocking columns 45, a first air-blocking column 45 is provided between each first heat dissipating fin 422a and an adjacent second heat dissipating fin 442a, each first air-blocking column 45 is close to the corresponding first ventilation slot 43, and part of the external air passing through the first heat dissipating channel 420a is diverted to the two adjacent second heat dissipating channels 440a through the first air-blocking column 45. In this embodiment, multiple first heat dissipation channels 420a are respectively connected to and face multiple second heat dissipation channels 440a, and the first wind-blocking column 45 is located between the first heat dissipation channel 420a and the second heat dissipation channel 440a and close to the first ventilation slot 43; in the process where the outside air in the first heat dissipation channel 420a flows into the second heat dissipation channel 440a facing it, the first wind-blocking column 45 blocks the outside air so that part of the outside air passes through the first ventilation slot 43 along the first air guide plate 424 and enters the corresponding second heat dissipation channel 440a, and at the same time, part of the outside air in one of the first heat dissipation channels 420a flows into the adjacent second heat dissipation channel 440a through the first ventilation slot 43 and the second air guide plate 444.

[0062] Since the first heat dissipation channel 420a of the radiator 40a in this embodiment is connected to the adjacent second heat dissipation channel 440a through the first ventilation slot 43, the first air guide plate 424 and the second air guide plate 444, the outside air sucked by the fan 20 is diverted and converged to the second heat dissipation channel 440a after passing through the first heat dissipation channel 420a, so that the outside air is blocked in the process of flowing through the radiator 40, thereby extending the heat exchange time between the outside air and the radiator 40a, and increasing the heat exchange contact area between the outside air and the radiator 40a, thereby improving the heat exchange efficiency of the radiator 40a to achieve more efficient heat exchange.

[0063] like Fig.14 and Fig.15 As shown, the radiator 40a also includes a third cooling fin group 46a, which is close to the side of the second cooling fin group 44a away from the first cooling fin group 42a. The third cooling fin group 46a includes a plurality of third cooling fins 462a, which are arranged at intervals along the first direction, and a third cooling channel 460a is formed between each adjacent two third cooling fins 462a. A second ventilation slot 47 is provided between each third cooling fin 462a and the adjacent second cooling fin 442a, and the second cooling channel 440a is connected to the adjacent third cooling channel 460a through the second ventilation slot 47. In this embodiment, multiple third heat dissipation fins 462a are evenly spaced apart along the first direction, and the multiple third heat dissipation fins 462a are respectively opposite to the multiple second heat dissipation fins 442a, and the third heat dissipation fins 462a are parallel to the second heat dissipation fins 442a. A side of each third heat dissipation fin 462a close to the fan 20 and a side of the corresponding second heat dissipation fin 442a away from the fan 20 form a second ventilation slot 47.

[0064] In this embodiment, the third heat dissipation fins 462a are all rectangular pieces, and the rectangular pieces are perpendicular to the first direction. In other embodiments, the third heat dissipation fins 462a may also be, but not limited to, arc-shaped pieces or curved pieces.

[0065] Optionally, a third air guide fin 446 is provided on the side of the second heat dissipation fin 442a close to the second ventilation slot 47, and the third air guide fin 446 is inclined from the second heat dissipation fin 442a to the adjacent third heat dissipation channel 460a; a fourth air guide fin 466 is provided on the side of the third heat dissipation fin 462a close to the second heat dissipation fin 442a, and the fourth air guide fin 466 is inclined from the third heat dissipation fin 462a to the adjacent second heat dissipation channel 440a, and the third air guide fin 446 and the fourth air guide fin 466 form a second ventilation slot 47, and the outside air in the second heat dissipation channel 440a is diverted to the adjacent third heat dissipation channel 460a through the second ventilation slot 47. Specifically, the second air guide plate 444 and the third air guide plate 446 are respectively arranged on opposite sides of the second heat dissipation fin 442a; the third air guide plate 446 and the fourth air guide plate 466 form a second ventilation slot 47, and part of the external air in the second heat dissipation channel 440a is diverted to the adjacent third heat dissipation channel 460a through the second ventilation slot 47. The third air guide plate 446 is used to guide part of the external air in the second heat dissipation channel 440a to the adjacent third heat dissipation channel 460a, and the fourth air guide plate 466 is used to guide part of the external air in the second heat dissipation channel 440a to the adjacent third heat dissipation channel 460a.

[0066] Specifically, the second heat dissipation fin 442a and the adjacent third heat dissipation fin 462a are arranged at intervals along the second direction, and the second heat dissipation fin 442a is closer to the first heat dissipation fin 422a than the third heat dissipation fin 462a; the length direction of the second heat dissipation channel 440a and the length direction of the third heat dissipation channel 460a are both parallel to the second direction, the inclination direction of the third air guide plate 446 intersects with the inclination direction of the fourth air guide plate 466, the third air guide plate 446 and the fourth air guide plate 466 on both sides of the second ventilation slot 47 are located on the same side of the second heat dissipation fin 442a, and the second air guide plate 444 and the third air guide plate 446 on the opposite sides of the second heat dissipation fin 442a are both located on the same side of the second heat dissipation fin 442a. Optionally, the inclination angle of the third air guide fin 446 relative to the second heat dissipation fin 442a ranges from greater than 0 degrees to less than 90 degrees. Preferably, the inclination angle of the third air guide fin 446 relative to the second heat dissipation fin 442a ranges from 20 degrees to 60 degrees. In this embodiment, the inclination angle of the third air guide fin 446 relative to the second heat dissipation fin 442a is 25 degrees. Optionally, the inclination angle of the fourth air guide fin 466 relative to the third heat dissipation fin 462a ranges from greater than 0 degrees to less than 90 degrees. Preferably, the inclination angle of the fourth air guide fin 466 relative to the third heat dissipation fin 462a ranges from 20 degrees to 60 degrees. In this embodiment, the inclination angle of the fourth air guide fin 466 relative to the third heat dissipation fin 462a is 25 degrees.

[0067] Optionally, the radiator 40a also includes a plurality of second air-blocking columns 48, a second air-blocking column 48 is provided between each second heat dissipation fin 442a and an adjacent third heat dissipation fin 462a, each second air-blocking column 48 is close to the corresponding second ventilation slot 47, and part of the external air passing through the second heat dissipation channel 440a is diverted to the two adjacent third heat dissipation channels 460a through the second air-blocking column 48. In this embodiment, multiple second heat dissipation channels 440a are respectively connected to and face multiple third heat dissipation channels 460a, and the second wind-blocking column 48 is located between the second heat dissipation channel 440a and the third heat dissipation channel 460a and close to the second ventilation slot 47; in the process where the outside air in the second heat dissipation channel 440a flows into the third heat dissipation channel 460a facing it, the second wind-blocking column 48 blocks the outside air so that part of the outside air passes through the second ventilation slot 47 along the third air guide plate 446 and enters the corresponding third heat dissipation channel 460a, and at the same time, part of the outside air in one of the second heat dissipation channels 440a flows into the adjacent third heat dissipation channel 460a through the second ventilation slot 47 and the fourth air guide plate 466.

[0068] Since the first heat dissipation channel 420a of the radiator 40a in this embodiment is connected to the adjacent second heat dissipation channel 440a through the first ventilation slot 43, the first air guide 424 and the second air guide 444, and the second heat dissipation channel 440a is connected to the adjacent third heat dissipation channel 460a through the second ventilation slot 47, the third air guide 446 and the fourth air guide 466, the outside air sucked by the fan 20 is divided and converged to the second heat dissipation channel 440a after passing through the first heat dissipation channel 420a, and is divided and converged to the third heat dissipation channel 460a after passing through the second heat dissipation channel 440a, so that the outside air is divided and converged twice in the process of flowing through the radiator 40a, and the outside air is blocked for many times in the radiator 40a, which further prolongs the heat exchange time between the outside air and the radiator 40a, and can further increase the heat exchange contact surface between the outside air and the radiator 40a, thereby further improving the heat exchange efficiency of the radiator 40a, so as to achieve a more efficient heat exchange effect.

[0069] like Figure 15-16As shown, the radiator 40a also includes a heat dissipation frame 49, a first heat dissipation fin group 42a, a first wind-blocking column 45, a second heat dissipation fin group 44a, a second wind-blocking column 48 and a third heat dissipation fin group 46a are arranged in the inner cavity of the heat dissipation frame 49; the heat dissipation frame 49 includes a bottom side panel 492, a top side panel 494 and two end side panels 496, the bottom side panel 492 is spaced parallel to the top side panel 494, the two end side panels 496 are respectively connected to the opposite ends of the bottom side panel 492 and the top side panel 494, and the bottom side panel 492, the top side panel 494 and the two end side panels 496 form a heat dissipation frame 49. The opposite ends of the first heat dissipation fin 422a are respectively connected to the bottom side panel 492 and the top side panel 494, the opposite ends of the second heat dissipation fin 442a are respectively connected to the bottom side panel 492 and the top side panel 494, the opposite ends of the third heat dissipation fin 462a are respectively connected to the bottom side panel 492 and the top side panel 494, the opposite ends of the first wind-blocking column 45 are respectively connected to the bottom side panel 492 and the top side panel 494, and the opposite ends of the second wind-blocking column 48 are respectively connected to the bottom side panel 492 and the top side panel 494.

[0070] like Figure 13-14 and Figure 17-Figure 18 As shown, when assembling the air-cooled heat dissipation device 100a, the fan 20 is installed on one end of the support plate 62 of the support frame 60 close to the two first connecting parts 64, the radiator 40a is connected to the second heat-conducting surface 542 of the heat-conducting seat 50, the heat-conducting seat 50 and the radiator 40a are placed on the end of the support frame 60 away from the first connecting part 64, and the air guide cover 80 is covered on the support frame 60, so that the fan 20 and the radiator 40a are accommodated in the receiving space 87 of the air guide cover 80, the air inlet of the fan 20 is directly opposite to the air inlet 822 of the air guide cover 80, and the two first connecting plates 644 are respectively attached to the two first connecting plates 644. The two connecting parts 86 make the two second connecting holes 862 face the two first connecting holes 645 respectively, and the two locking pieces pass through the two second connecting holes 862 and are locked in the two first connecting holes 645 respectively; the two side plates 84 are respectively connected to the opposite sides of the support plate 62, the opposite ends of the radiator 40a are respectively connected to the two side plates 84, and the two side plates 84 are respectively connected to the opposite ends of the thermal conductive seat 50, and the end plate 85 is connected to the end of the support plate 62; the air guide cover 80 has an air guide groove 83 between the fan 20 and the radiator 40a, and the air guide groove 83 is connected to the first heat dissipation channel 420a.

[0071] like Fig.19As shown, when the fan 20 is running, it can draw in the outside air, so that the outside air enters the air guide groove 83 from the air inlet through the fan 20, and the outside air in the air guide groove 83 passes through the first heat dissipation channel 420a through diversion and convergence to the second heat dissipation channel 440a, and the outside air passing through the second heat dissipation channel 440a is diverted and converged again to the third heat dissipation channel 460a, and the outside air is discharged from the radiator 40 through the third heat dissipation channel 460a. When the outside air passes through the radiator 40a, the outside air exchanges heat with the radiator 40a. Specifically, the outside air is divided and converged when passing from the first heat dissipation channel 420a to the second heat dissipation channel 440a. The outside air is blocked by the first wind-blocking column 45 and diverted to the adjacent second heat dissipation channel 440a, which prolongs the heat exchange time between the outside air and the radiator 40a, increases the heat exchange contact surface between the outside air and the radiator 40a, improves the heat exchange efficiency of the radiator 40a, and realizes a more efficient heat exchange function; when the outside air passes from the second heat dissipation channel 440a to the third heat dissipation channel 460a, the outside air is divided and converged again. The outside air is blocked by the second wind-blocking column 48 and diverted to the corresponding third heat dissipation channel 460a, further prolongs the heat exchange time between the outside air and the radiator 40a, further increases the heat exchange contact surface between the outside air and the radiator 40a, further improves the heat exchange efficiency of the radiator 40a, and realizes a more efficient heat exchange function.

[0072] The heat sink 40a can be assembled by stamping or snapping fins, and the heat sink 40a and the air guide cover 80 are connected by welding or clamping. In other embodiments, the heat sink 40a and the air guide cover 80 can be integrally formed.

[0073] like Fig. 20 As shown, the present application also provides an electronic device 200, which includes an air-cooling heat dissipation device, a housing 220 and a circuit board 230. The air-cooling heat dissipation device is arranged in the inner cavity of the housing 220 and is fixedly connected to the middle frame. The air-cooling heat dissipation device can be the air-cooling heat dissipation device 100 in the first embodiment, the air-cooling heat dissipation device 100a in the second embodiment or the air-cooling heat dissipation device in other embodiments. The housing 220 is provided with an air inlet 240 facing the air inlet 822 of the air-cooling heat dissipation device, and the housing 220 is provided with an air outlet 260 facing the third heat dissipation channel of the air-cooling heat dissipation device. The heat-conducting seat 50 of the air-cooling heat dissipation device is attached to the heating device of the circuit board 230, and the heating device can be but not limited to electronic devices such as chips with high power; when the heating device is working, the heat generated is conducted to the radiator through the heat-conducting seat 50, and the fan of the air-cooling heat dissipation device runs to allow the outside air to enter the inside of the air-cooling heat dissipation device from the air inlet 240, and the outside air is discharged from the air outlet 260 after heat exchange in the process of passing through the radiator.

[0074] In this embodiment, the air inlet 822 is disposed on the back plate of the housing 220, and the air outlet 260 is disposed on the side plate of the housing 220. In other embodiments, the air inlet 822 is disposed on the back plate of the housing 220, and the air outlet 260 is disposed on the end plate of the housing 220.

[0075] During the process of heat exchange between the outside air sucked by the fan of the air-cooled heat dissipation device of the electronic device 200 of the present invention and the radiator, the outside air is diverted and converged in the radiator to extend the heat exchange time between the outside air and the radiator and increase the heat exchange area between the outside air and the radiator, thereby improving the heat dissipation efficiency of the air-cooled heat dissipation device and being able to efficiently dissipate the heat for the heating components on the circuit board 230, so that the heating components can work stably and improve the user experience.

[0076] The above is an implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An air-cooled heat dissipation device, characterized in that: The air-cooling heat dissipation device comprises: Fans; and A radiator, the radiator comprising a first radiating fin group and a second radiating fin group, the first radiating fin group having a first radiating channel, the second radiating fin group having a second radiating channel, the first radiating channel being closer to the fan than the second radiating channel, the first radiating channel being connected to the adjacent second radiating channel; when the fan is running, it can draw outside air through the first radiating channel and the adjacent second radiating channel of the radiator, and the outside air is divided and converged in the process of passing from the first radiating channel to the second radiating channel.

2. The air-cooling heat dissipation device according to claim 1, characterized in that: The first heat dissipation fin group is closer to the fan than the second heat dissipation fin group, and the first heat dissipation channel is parallel to the second heat dissipation channel; the outside air in one of the two adjacent first heat dissipation channels is diverted to the two adjacent second heat dissipation channels, and the outside air in the two adjacent first heat dissipation channels converges to the corresponding second heat dissipation channel.

3. The air-cooling heat dissipation device according to claim 2, characterized in that: The first heat dissipation fin group includes a plurality of first heat dissipation fins, which are arranged at intervals from each other along a first direction, and a first heat dissipation channel is formed between every two adjacent first heat dissipation fins; the second heat dissipation fin group includes a plurality of second heat dissipation fins, which are arranged at intervals from each other along the first direction, and a second heat dissipation channel is formed between every two adjacent second heat dissipation fins.

4. The air-cooling heat dissipation device according to claim 3, characterized in that: The first heat dissipation fin group also includes a plurality of first top heat dissipation fins and a plurality of first heat conductive sheets, the first top heat dissipation fins are respectively connected to the first heat dissipation fins on opposite sides of the first top heat dissipation fins, the first top heat dissipation fin and the two first heat dissipation fins connected thereto form a first heat dissipation frame, every two adjacent first heat dissipation frames are spaced apart, every two adjacent first heat dissipation frames are connected through the first heat conductive sheets, and the first heat dissipation fins of every two adjacent first heat dissipation frames form the first heat dissipation channel; the second heat dissipation fin group includes a plurality of second top heat dissipation fins and a plurality of second heat conductive sheets, the second top heat dissipation fins are respectively connected to the second heat dissipation fins on opposite sides of the second top heat dissipation fins, the second top heat dissipation fin and the two second heat dissipation fins connected thereto form a second heat dissipation frame, every two adjacent second heat dissipation frames are spaced apart, every two adjacent second heat dissipation frames are connected through the second heat conductive sheets, and the second heat dissipation fins of every two adjacent second heat dissipation frames form the second heat dissipation channel.

5. The air-cooling heat dissipation device according to claim 4, characterized in that: The first heat dissipation channel of the first heat dissipation frame is connected to the second heat dissipation channel of the adjacent second heat dissipation frame and the second heat dissipation channel between two adjacent second heat dissipation frames; the first heat dissipation channel between two adjacent first heat dissipation frames is respectively connected to the second heat dissipation channel of the adjacent second heat dissipation frame and the second heat dissipation channel surrounded by two adjacent second heat dissipation frames.

6. The air-cooling heat dissipation device according to claim 4, characterized in that: The first heat dissipation frames are arranged along a first direction, the second heat dissipation frames are arranged along a first direction, the length directions of the first heat dissipation channels and the second heat dissipation channels are parallel to the second direction, and the first direction is perpendicular to the second direction.

7. The air-cooling heat dissipation device according to claim 4, characterized in that: The first heat conductive sheet is connected to ends of the first heat dissipation fins of two adjacent first heat dissipation frames away from the first top heat dissipation fins, and the first heat conductive sheet and the two first heat dissipation fins connected thereto form the first heat dissipation channel; The second heat conducting sheet is connected to ends of the second heat dissipating fins of two adjacent second heat dissipating frames away from the second top heat dissipating fins, and the second heat conducting sheet and the two second heat dissipating fins connected thereto form the second heat dissipating channel.

8. The air-cooling heat dissipation device according to claim 4, characterized in that: The first heat dissipation frame and the adjacent second heat dissipation frame are offset from each other, the two first heat dissipation fins of the first heat dissipation frame are respectively facing two adjacent second heat dissipation channels, and the two second heat dissipation fins of the second heat dissipation frame are respectively facing two adjacent first heat dissipation channels.

9. The air-cooling heat dissipation device according to claim 4, characterized in that: The first heat conducting sheet is connected to the second heat conducting sheet, and the first heat conducting sheet and the second heat conducting sheet are coplanar; the first top heat dissipating fin is connected to the second top heat dissipating fin, and the first top heat dissipating fin and the second top heat dissipating fin are coplanar.

10. The air-cooling heat dissipation device according to claim 3, characterized in that: A first ventilation slot is provided between the first heat dissipation fin and the adjacent second heat dissipation fin, and the first heat dissipation channel and the adjacent second heat dissipation channel are communicated through the first ventilation slot.

11. The air-cooling heat dissipation device according to claim 10, characterized in that: The first heat dissipation fin is parallel to the second heat dissipation fin. A first air guide is provided on the side of the first heat dissipation fin facing away from the fan, and the first air guide is inclined from the first heat dissipation fin to the adjacent second heat dissipation channel; a second heat dissipation fin is provided on the side of the second heat dissipation fin close to the first heat dissipation fin, and the second air guide is inclined from the second heat dissipation fin to the adjacent first heat dissipation channel. The first air guide and the second air guide form the first ventilation slot, and the outside air in the first heat dissipation channel is diverted to the adjacent second heat dissipation channel through the first ventilation slot.

12. The air-cooling heat dissipation device according to claim 11, characterized in that: The first heat dissipation fin and the adjacent second heat dissipation fin are arranged at intervals along the second direction, the length direction of the first heat dissipation channel and the length direction of the second heat dissipation channel are both parallel to the second direction, the inclination angle range of the first air guide plate relative to the first heat dissipation fin is greater than 0 degrees and less than 90 degrees, the inclination angle range of the second air guide plate relative to the second heat dissipation fin is greater than 0 degrees and less than 90 degrees, the inclination direction of the first air guide plate intersects with the inclination direction of the second air guide plate, and the first air guide plate and the second air guide plate on both sides of the first ventilation slot are located on the same side of the first heat dissipation fin.

13. The air-cooling heat dissipation device according to claim 11 or 12, characterized in that: The radiator also includes a plurality of first wind-blocking columns, each of which is provided between the first heat dissipation fin and the adjacent second heat dissipation fin, and each of the first wind-blocking columns is close to the corresponding first ventilation slot, and the outside air passing through the first heat dissipation channel is diverted to two adjacent second heat dissipation channels through the first wind-blocking column.

14. The air-cooling heat dissipation device according to claim 11, characterized in that: The radiator also includes a third cooling fin group, which is close to the side of the second cooling fin group facing away from the first cooling fin group. The third cooling fin group includes a plurality of third cooling fins, which are arranged in a spaced relationship along a first direction, and a third cooling channel is formed between each two adjacent third cooling fins. A second ventilation slot is provided between each third cooling fin and the adjacent second cooling fin, and the second cooling channel is connected to the adjacent third cooling channel through the second ventilation slot.

15. The air-cooling heat dissipation device according to claim 14, characterized in that: The third heat dissipation fin is parallel to the second heat dissipation fin, and a third air guide plate is provided on a side of the second heat dissipation fin close to the second ventilation slot, and the third air guide plate is inclined from the second heat dissipation fin to the adjacent third heat dissipation channel; a fourth air guide plate is provided on a side of the third heat dissipation fin close to the second heat dissipation fin, and the fourth air guide plate is inclined from the third heat dissipation fin to the adjacent second heat dissipation channel, and the third air guide plate and the fourth air guide plate surround the second ventilation slot, and the outside air in the second heat dissipation channel is diverted to the adjacent third heat dissipation channel through the second ventilation slot.

16. The air-cooling heat dissipation device according to claim 15, characterized in that: The second heat dissipation fins and the adjacent third heat dissipation fins are arranged at intervals along the second direction, the length direction of the second heat dissipation channel and the length direction of the third heat dissipation channel are both parallel to the second direction, the inclination angle range of the third air guide plate relative to the third heat dissipation fin is greater than 0 degrees and less than 90 degrees, the inclination angle range of the fourth air guide plate relative to the fourth heat dissipation fin is greater than 0 degrees and less than 90 degrees, the inclination direction of the third air guide plate intersects with the inclination direction of the fourth air guide plate, and the third air guide plate and the fourth air guide plate on both sides of the second ventilation slot are located on the same side of the second heat dissipation fin.

17. The air-cooling heat dissipation device according to claim 15 or 16, characterized in that: The radiator also includes a plurality of second wind-blocking columns, each of which is provided between the third heat dissipation fins and the adjacent second heat dissipation fins, each of which is close to the corresponding second ventilation, and the outside air passing through the second heat dissipation channel is diverted to two adjacent third heat dissipation channels through the second wind-blocking columns.

18. The air-cooling heat dissipation device according to claim 1, characterized in that: The air-cooling heat dissipation device further includes an air guide cover, the fan and the radiator are accommodated in a receiving space of the air guide cover, the air guide cover has an air guide groove, and the air guide groove is connected to the first heat dissipation channel.

19. An electronic device, characterized in that: The electronic device comprises an air-cooling heat dissipation device and a housing as described in any one of claims 1 to 18, and the air-cooling heat dissipation device is arranged on the housing.

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