Air-cooling heat dissipation device for fiber laser and fiber laser

Abstract

The present application relates to the field of laser technology, and in particular to an air-cooling heat dissipation device for a fiber laser and a fiber laser. The air-cooling heat dissipation device includes a fan, a first heat sink and a first heat dissipation body; the interior of the first heat dissipation body forms an air inlet space, an air outlet space and a first air-cooling space; the fan is arranged at the air outlet end, and the fan draws cold air toward the air outlet space; one end of the air inlet space is connected to the air inlet end, and the other end of the air inlet space is blocked from the air outlet end; one end of the air outlet space is blocked from the air inlet end, and the other end of the air outlet space is connected to the air outlet end; the first heat sink is arranged in the first air-cooling space, and the first heat sink is used to install the pump source of the fiber laser, and the first heat sink forms a plurality of first air-cooling channels connecting the air inlet space and the air outlet space. The fiber laser includes the air-cooling heat dissipation device. The air-cooling heat dissipation device and the fiber laser have a large cold air flow rate and high heat dissipation efficiency, and can meet the air-cooling heat dissipation requirements of high-power fiber lasers.

Description

Technical Field

[0001] The present application relates to the field of laser technology, and in particular to an air-cooling heat dissipation device for a fiber laser and a fiber laser. Background Art

[0002] Fiber lasers refer to lasers that use rare earth-doped glass optical fibers as gain media. Fiber lasers are widely used, including laser fiber communications, laser space telecom, industrial shipbuilding, automobile manufacturing, laser engraving, laser marking, laser cutting, printing rollers, military defense security, medical equipment, large-scale infrastructure, and as pump sources for other lasers.

[0003] Fiber lasers generate a lot of heat when working, and they need to be constantly cooled to keep working, otherwise the laser will be damaged.

[0004] At present, fiber lasers are mostly cooled by water to ensure the normal operation of the equipment. Although water cooling has fast heat dissipation, it still has many problems. Therefore, there are also solutions on the market that use air cooling to dissipate heat for fiber lasers.

[0005] However, current air cooling solutions for fiber lasers usually use a fan to draw air directly toward the fiber laser for cooling, which has low cooling efficiency, untimely cooling, and can only cool small fiber lasers with low power. Summary of the invention

[0006] The purpose of the present application is to provide an air-cooling heat dissipation device, a housing and an optical fiber laser for an optical fiber laser, so as to solve the technical problem in the prior art that the air-cooling efficiency of the optical fiber laser is low and only low-power optical fiber lasers can be air-cooled to a certain extent.

[0007] The present application provides an air-cooled heat dissipation device for a fiber laser, comprising a fan, a first heat sink and a first heat dissipation body;

[0008] The two ends of the first heat dissipation body in the height direction are respectively an air inlet end and an air outlet end, and the interior of the first heat dissipation body forms an air inlet space, an air outlet space and a first air cooling space;

[0009] The fan is arranged at the air outlet end, and the fan draws cold air toward the air outlet space;

[0010] One end of the air inlet space in the height direction is connected to the air inlet end, and the other end of the air inlet space in the height direction is blocked from the air outlet end;

[0011] One end of the air outlet space in the height direction is blocked from the air inlet end, and the other end of the air outlet space in the height direction is connected to the air outlet end;

[0012] The first radiator is disposed in the first air-cooling space. The first radiator forms a plurality of first air-cooling channels. The first radiator is used to install a pump source of a fiber laser. The first air-cooling channels communicate the air inlet space and the air outlet space.

[0013] In the above technical solution, further, the number of the air inlet spaces and the number of the air outlet spaces are both multiple, one air inlet space and one air outlet space constitute an air duct assembly, and the air inlet space and the air outlet space in each air duct assembly are connected via at least one air-cooling space.

[0014] In any of the above technical solutions, further, the first heat dissipation body includes a partition, a baffle, a first air guide plate, and a second air guide plate;

[0015] There are multiple partitions, and the multiple partitions are sequentially arranged at intervals along the length direction of the air-cooled heat dissipation device so that a cavity is formed between two adjacent partitions;

[0016] The baffle is arranged in the cavity so that the cavity is divided into the air inlet space and the air outlet space;

[0017] The first air guide plate covers the end of the air inlet space facing the air outlet end, and the second air guide plate covers the end of the air outlet space facing the air inlet end.

[0018] In any of the above technical solutions, further, the first heat dissipation body also includes a mounting plate and a cover plate;

[0019] Both ends of the baffle in the width direction are connected to the mounting plate, and both ends of the mounting plate in the length direction extend into the air inlet space and the air outlet space respectively, and the first radiator is arranged on the mounting plate;

[0020] The cover plate is arranged at an outer side of the mounting plate along the width direction of the baffle plate, and the first air cooling space is formed between the cover plate and the mounting plate;

[0021] A first gap is formed between one end of the mounting plate in the length direction and the partition plate close to the air inlet space, so that the first air cooling space is connected to the air inlet space through the first gap;

[0022] A second gap is formed between the other end of the mounting plate in the length direction and the partition plate close to the air outlet space, so that the first air cooling space is connected to the air outlet space through the second gap.

[0023] In any of the above technical solutions, further, a plurality of first radiators are arranged in the first air-cooling space, and the plurality of first radiators are arranged in sequence along the height direction of the first air-cooling space;

[0024] The first air cooling channel extends along the length direction of the first heat dissipation body.

[0025] In any of the above technical solutions, further, the fan is a vortex fan or a centrifugal fan;

[0026] The wind pressure of the fan is not less than 300Pa;

[0027] And / or, the air-cooling heat dissipation device further includes a second heat dissipation body, the second heat dissipation body forms a second air-cooling space, and the second air-cooling space runs through the air inlet end and the air outlet end;

[0028] The second air-cooling space is provided with a second radiator, the second radiator is formed with a plurality of second air-cooling channels, and the second air-cooling channels extend along the height direction of the air inlet space.

[0029] In any of the above technical solutions, further, the first heat sink and the second heat sink are both dense-tooth heat sinks, and the dense-tooth heat sink includes a plurality of heat dissipation teeth arranged side by side and spaced apart;

[0030] The tooth gap between adjacent heat dissipation teeth is no greater than 2 mm;

[0031] The thickness of the heat dissipation teeth is not greater than 2 mm;

[0032] The first heat sink and the second heat sink are made of copper.

[0033] The present application also provides a fiber laser, comprising a pump source and an air-cooling heat dissipation device for the fiber laser described in any of the above technical solutions.

[0034] In any of the above technical solutions, further, the fiber laser also includes a housing;

[0035] The air-cooling heat dissipation device is arranged inside the shell, and the shell is provided with an air inlet and an air outlet. The air inlet is arranged corresponding to the air inlet end of the air-cooling heat dissipation device, and the air outlet is arranged corresponding to the fan of the air-cooling heat dissipation device.

[0036] In any of the above technical solutions, further, the air outlet end of the air-cooled heat dissipation device is arranged opposite to the bottom of the shell and forms an air inlet gap, and the air inlet is arranged on the side of the shell facing the air inlet gap.

[0037] Compared with the prior art, the beneficial effects of this application are:

[0038] The present application provides an air-cooled heat dissipation device for a fiber laser, comprising a fan, a first heat sink and a first heat dissipation body. An air inlet space, an air outlet space and a first air cooling space are formed inside the first heat dissipation body. Under the suction action of the fan, cold air flows through the air inlet space and the first air cooling space in sequence. The first heat sink is arranged in the first air cooling space, so that the first heat sink heated by the heat dissipation of the pump source is cooled by the cold air, and the cold air becomes hot air and is discharged from the air outlet space.

[0039] Among them, since the cold air first enters the air inlet space and then enters the first air cooling space, instead of directly entering the first air cooling space, the air intake volume can be increased and the air intake speed can be avoided from being too fast by appropriately expanding the air inlet space. This can not only increase the air cooling heat exchange amount per unit time, but also extend the cooling time of the unit volume of cold air, improve the air cooling efficiency, and provide a basis for the air-cooled heat dissipation device to cope with the air cooling of high-power fiber lasers. Specifically, it can at least meet the air cooling needs of fiber lasers above one kilowatt.

[0040] In addition, the air inlet space and the air outlet space both extend in the height direction of the first heat dissipation body, and the multiple first air-cooling channels of the first radiator are connected to the air inlet space and the air outlet space. The cold air flowing into the first air-cooling space from the air inlet space is diverted by the multiple first air-cooling channels, so that the cold air cools the first radiator in each first air-cooling channel, and the heat exchange area is increased. Moreover, due to the increase in the air intake volume of the air inlet space, a larger-sized first radiator with more first air-cooling channels is provided, thereby providing a further basis for meeting the air cooling needs of high-power fiber lasers.

[0041] In other words, the air-cooled heat dissipation device has a large cold air flow rate and high heat dissipation efficiency, which can meet the air-cooled heat dissipation needs of high-power fiber lasers. Compared with the water-cooling solution, it can effectively reduce the volume, facilitate transportation, reduce production and maintenance costs, prevent condensation, and improve safety of use.

[0042] The fiber laser provided in the present application includes the above-mentioned air-cooling heat dissipation device for the fiber laser, thereby being able to achieve all the beneficial effects of the air-cooling heat dissipation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1A first structural schematic diagram of an air-cooled heat dissipation device for a fiber laser provided in Example 1 of the present application;

[0045] Figure 2 A second structural schematic diagram of the air-cooling heat dissipation device for the optical fiber laser provided in the first embodiment of the present application;

[0046] Figure 3 A schematic diagram of the use status of the air-cooling heat dissipation device for the optical fiber laser provided in Example 1 of the present application;

[0047] Figure 4 A third structural schematic diagram of the air-cooling heat dissipation device for the optical fiber laser provided in the first embodiment of the present application;

[0048] Figure 5 A fourth structural schematic diagram of the air-cooling heat dissipation device for the optical fiber laser provided in the first embodiment of the present application;

[0049] Figure 6 A fifth structural schematic diagram of the air-cooling heat dissipation device for the optical fiber laser provided in the first embodiment of the present application;

[0050] Figure 7 A sixth structural schematic diagram of the air-cooling heat dissipation device for the optical fiber laser provided in the first embodiment of the present application;

[0051] Figure 8 A seventh structural schematic diagram of the air-cooling heat dissipation device for the optical fiber laser provided in the first embodiment of the present application;

[0052] Fig. 9 A schematic diagram of the structure of a housing provided in Embodiment 2 of the present application;

[0053] Fig.10 A first structural schematic diagram of the optical fiber laser provided in Embodiment 3 of the present application;

[0054] Fig.11 A second structural schematic diagram of the optical fiber laser provided in Example 3 of the present application;

[0055] Fig.12 This is a third structural schematic diagram of the fiber laser provided in Example 3 of the present application.

[0056] Reference numerals:

[0057] 1-air-cooled heat dissipation device; 10-first heat dissipation body; 100-first radiator; 101-first air-cooling space; 102-air inlet space; 103-air outlet space; 104-partition; 105-baffle; 106-first air guide plate; 107-second air guide plate; 108-cover plate; 109-mounting plate; 11-second heat dissipation body; 110-second radiator; 111-second air-cooling space; 12-first wind shield plate; 13-second wind shield plate; 14-fan; 15-protective plate; 16-support seat; 2-shell; 20-housing; 21-air inlet; 22-air outlet; 23-air inlet interval; 3-fiber laser; 30-pump source; 31-castor; 32-optoelectronic device. DETAILED DESCRIPTION

[0058] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0059] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical 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 the present invention can be understood according to specific circumstances.

[0061] Embodiment 1

[0062] The embodiments of the present application provide an air-cooling heat dissipation device for a fiber laser, so as to efficiently air-cool the fiber laser.

[0063] In the prior art, fiber lasers are usually water-cooled, usually including two solutions: an external water cooler and a built-in water cooler.

[0064] If an external water cooler is used for circulating cooling, it is necessary to purchase a water cooler, which increases the purchase cost. When in use, it consumes a lot of electricity, which increases the cost of use. In addition, it occupies a large area, making it very inconvenient to move and transport.

[0065] If a built-in water chiller is used for circulating cooling, the power consumption will also be high, which will still cause the fiber laser to increase in size and weight, making it inconvenient to move and transport.

[0066] Moreover, whether an external water cooler or a built-in water cooler is used for circulating cooling, water leakage accidents are prone to occur, causing damage to optoelectronic devices and electrical components, and affecting the service life of the laser.

[0067] In addition, fiber lasers equipped with water coolers are prone to condensation in high-humidity environments, and a dehumidification structure needs to be installed, which further increases the size of the fiber laser. The need to regularly maintain the dehumidifier also increases the cost of use.

[0068] See also Figures 1 to 8 Combined with Figures 9 to 12 As shown, the air-cooling heat dissipation device 1 for a fiber laser provided in this embodiment includes a fan 14 , a first heat sink 100 and a first heat dissipation body 10 .

[0069] The two ends of the first heat dissipation body 10 in the height direction are respectively the air inlet end and the air outlet end, and the first heat dissipation body 10 forms an air inlet space 102, an air outlet space 103 and a first air cooling space 101 inside. Specifically, for example, the top end of the first heat dissipation body 10 in the height direction is the air inlet end, and the bottom end of the first heat dissipation body 10 in the height direction is the air outlet end; or, the bottom end of the first heat dissipation body 10 in the height direction is the air inlet end, and the top end of the first heat dissipation body 10 in the height direction is the air outlet end. The top end air outlet structure is conducive to improving the exhaust efficiency, and there is no need to increase the suspended height of the bottom end of the air-cooled heat dissipation device 1 in order to improve the exhaust efficiency.

[0070] In addition, the relative positional relationship between the air inlet space 102, the air outlet space 103 and the first air cooling space 101 can be varied, as long as the air inlet space 102 and the air outlet space 103 are connected through the first air cooling space 101. On this basis, the fan 14 is arranged at the air outlet end, and the fan 14 draws cold air toward the air outlet space 103, so that under the suction effect of the fan 14, a negative pressure environment is formed in the air outlet space 103, so that the flow path of the cold air is to flow through the air inlet end, the air inlet space 102, the first air cooling space 101, the air outlet space 103 and the air outlet end in sequence.

[0071] Among them, the first radiator 100 is arranged in the first air-cooling space 101, and the first air-cooling space 101 is used to install the pump source 30 of the fiber laser 3. Since the pump source 30 will generate heat during operation, the pump source 30 will quickly transfer heat to the first radiator 100, so that the temperature of the pump source 30 is reduced and the temperature of the first radiator 100 is increased.

[0072] The temperature of the cold air entering the first air-cooling space 101 is much lower than the temperature of the first radiator 100. The first radiator 100 forms a plurality of first air-cooling channels, and the first air-cooling channels connect the air inlet space 102 and the air outlet space 103. The cold air flows into the first air-cooling channels, so that the cold air cools down the first radiator 100 in each first air-cooling channel. The cold air becomes hot air and flows into the air outlet space 103.

[0073] The air inlet space 102 and the air outlet space 103 both extend in the height direction of the first heat dissipation body 10, one end of the air outlet space 103 in the height direction is blocked from the air inlet end, and the other end of the air outlet space 103 in the height direction is connected to the air outlet end, one end of the air inlet space 102 in the height direction is connected to the air inlet end, and the other end of the air inlet space 102 in the height direction is blocked from the air outlet end. Therefore, on the one hand, all the cold air entering the air inlet space 102 is sucked into the first air cooling space 101 instead of being directly drawn away from the air outlet end by the fan 14, thereby improving the utilization rate of the cold air. On the other hand, the hot air is directly discharged through the air outlet channel instead of flowing back toward the air inlet end, thereby preventing the mixing of hot air and cold air and ensuring the cooling efficiency.

[0074] In an optional solution of this embodiment, the number of the air inlet spaces 102 and the number of the air outlet spaces 103 are both plural, and one air inlet space 102 and one air outlet space 103 constitute an air duct component.

[0075] The air inlet space 102 and the air outlet space 103 in each air duct assembly are connected via at least one air cooling space. In other words, the air inlet space 102 and the air outlet space 103 in each air duct assembly are connected via one, two, or three or more air cooling spaces, so that a cold air supply function is provided for all corresponding air cooling spaces through one air inlet space 102, and a hot air exhaust function is provided for all corresponding air cooling spaces through one air outlet space 103.

[0076] Specifically, the flow area of ​​the air inlet space 102 and the flow area of ​​the air outlet space 103 are not less than the total flow area of ​​the first air cooling channels in all corresponding air cooling spaces to ensure that the air intake and exhaust volumes can meet the cooling requirements of the first radiator 100.

[0077] In the present embodiment, since the first air cooling channel connects the air inlet space 102 and the air outlet space 103, and both the air inlet space 102 and the air outlet space 103 extend along the height direction of the first heat dissipation body 10, the cold air flows into the first air cooling space 101 from the side of the air inlet space 102, and the hot air flows into the air outlet space 103 from the side of the air outlet space 103. That is to say, the air inlet direction and the air outlet direction of the first air cooling space 101 are not along the height direction of the first heat dissipation body 10.

[0078] Therefore, the extension direction of the first air-cooling channel is not along the height direction of the first heat dissipation body 10. Therefore, when a plurality of first radiators 100 are arranged in the first air-cooling space 101 and the plurality of first radiators 100 are arranged sequentially along the height direction of the first air-cooling space 101, the arrangement direction of the plurality of radiators is different from the flow direction of the cold air. Each first radiator 100 independently takes in air and discharges air. There will be no problem that the cold air will rise in temperature due to cooling the first radiator 100 upstream of the air path and then flow into the first radiator 100 downstream of the air path. There will also be no problem that the cooling effect of the downstream first radiator 100 is reduced due to heat accumulation of the cooling air. Therefore, the cooling effect of each first radiator 100 is almost the same, that is, the cooling effect of all pump sources 30 is more balanced.

[0079] In addition, since the first radiator 100 is stacked along the height direction of the first heat dissipation body 10, the cooling effect is not affected, so it is possible to stack the first radiator 100 along the height direction, so that the length direction of the first radiator 100 is consistent with the height direction of the first heat dissipation body 10, which is beneficial to improve the space utilization of the first heat dissipation body 10, thereby reducing the volume of the air-cooled heat dissipation device 1.

[0080] Optionally, the first air-cooling channel extends along the length direction of the first heat dissipation body 10, that is, the extension direction of the first air-cooling channel of the first radiator 100 is perpendicular to the height direction of the air-cooling heat dissipation device 1, so that the wind resistance is minimized, the utilization rate of the first air-cooling space 101 is improved, and the structure of the first heat dissipation body 10 is more compact.

[0081] In an optional solution of this embodiment, the first heat dissipation body 10 includes a partition plate 104 , a baffle plate 105 , a first air guide plate 106 and a second air guide plate 107 .

[0082] The number of the partitions 104 is multiple, for example, the number of the partitions 104 is two or three or more, and the multiple partitions 104 are sequentially arranged along the length direction of the air-cooled heat sink 1, so that a cavity is formed between two adjacent partitions 104. The number of the cavities is one or two or more.

[0083] The baffle 105 is disposed in the cavity so that the cavity is divided into an air inlet space 102 and an air outlet space 103. On the one hand, the air inlet space 102 and the air outlet space 103 both extend along the entire height direction of the first heat dissipation body 10. On the other hand, the air inlet space 102 and the air outlet space 103 are blocked by the baffle 105, so that there is no direct airflow between the air inlet space 102 and the air outlet space 103, but airflow is achieved through the first air cooling space 101. In addition, each air duct component is separated by the baffle 104, which can improve the uniformity of heat dissipation and prevent damage to the device caused by uneven heat dissipation.

[0084] The first air guide plate 106 covers the end of the air inlet space 102 facing the air outlet end, so that the air inlet space 102 is blocked from the air outlet end, and the end of the air inlet space 102 facing the air inlet end is not provided with an air guide plate, so that the air inlet space 102 is connected to the air inlet end. Specifically, the first air guide plate 106 is sealedly connected to the baffle plate 105 and the end of the partition plate 104 on one side facing the air outlet end, for example, by welding or riveting.

[0085] The second air guide plate 107 covers the end of the air outlet space 103 facing the air inlet end, so that the air outlet space 103 is blocked from the air inlet end, and the end of the air outlet space 103 facing the air outlet end is not provided with an air guide plate, so that the air outlet space 103 is connected to the air outlet end. Specifically, the second air guide plate 107 is sealed and connected to the end of the air inlet end of the baffle plate 105 and the partition plate 104 on the other side, for example, by welding or riveting.

[0086] Optionally, the baffle 105 and the partition 104 are arranged in parallel, so that all the air inlet spaces 102 and all the air outlet spaces 103 are alternately arranged in sequence along the length direction of the first heat dissipation body 10 .

[0087] Optionally, a protection plate 15 is disposed on the outer side of the cover plate 108 to protect the pump source 30 installed on the first heat dissipation body 10 .

[0088] Optionally, a first wind shield 12 is provided between one end of the cover plate 108 and the protective plate 15 in the height direction, and a second wind shield 13 is provided between the other end of the cover plate 108 and the protective plate 15 in the height direction, so as to avoid the formation of a cold air circulation channel between the cover plate 108 and the protective plate 15, that is, to avoid the pump source 30 being directly blown by cold air for a long time, which is beneficial to protecting the pump source 30 and thus extending the service life of the pump source 30.

[0089] In this embodiment, the first heat dissipation body 10 further includes a mounting plate 109 and a cover plate 108 .

[0090] Both ends of the baffle 105 in the width direction are connected to the mounting plates 109, and both ends of the mounting plates 109 in the length direction extend into the air inlet space 102 and the air outlet space 103 respectively. The first radiator 100 is arranged on the mounting plates 109, so that both ends of the baffle 105 in the width direction are installed with the first radiator 100 through the mounting plates 109, a part of the first radiator 100 corresponds to the air inlet space 102, and the other part of the first radiator 100 corresponds to the air outlet space 103.

[0091] The first heat sinks 100 on both sides are embedded in the cavity, so that the structure of the first heat dissipation body 10 is more compact and the volume is smaller.

[0092] Optionally, the mounting plate 109 is perpendicular to the baffle 105 .

[0093] The cover plate 108 is arranged at an outer side of the mounting plate 109 along the width direction of the baffle 105, and a first air-cooling space 101 is formed between the cover plate 108 and the mounting plate 109. Specifically, the cover plates 108 are arranged at intervals on both sides of the width direction of the partition 104, so that the first air-cooling space 101 is formed on both sides of the width direction of the first heat dissipation body 10, and then the pump source 30 is cooled by both sides of the width direction of the first heat dissipation body 10, so as to increase the number of pump sources 30 that can be installed per unit area. When the number of pump sources 30 is constant, the volume of the air-cooling heat dissipation device 1, the housing 2 using the air-cooling heat dissipation device 1, and the fiber laser 3 using the air-cooling heat dissipation device 1 are all reduced.

[0094] A first gap is formed between one end of the mounting plate 109 in the length direction and the partition 104 close to the air inlet space 102, so that the first air-cooling space 101 is connected with the air inlet space 102 through the first gap, and a second gap is formed between the other end of the mounting plate 109 in the length direction and the partition 104 close to the air outlet space 103, so that the first air-cooling space 101 is connected with the air outlet space 103 through the second gap, so that the air inlet direction and the air outlet direction of the first air-cooling space 101 are both in the length direction of the mounting plate 109.

[0095] In an optional solution of this embodiment, the air-cooled heat dissipation device 1 further includes a second heat dissipation body 11, and a second air-cooling space 111 is provided on the side wall of the second heat dissipation body 11, and the second air-cooling space 111 runs through the air inlet end and the air outlet end. Specifically, the second air-cooling space 111 can be an installation through groove extending along the height direction of the second heat dissipation body 11, and the installation barrel groove runs through the air inlet end and the air outlet end.

[0096] The second air cooling space 111 is provided with a second heat sink 110 . The second heat dissipation body 11 is used to install the optoelectronic device 32 of the optical fiber laser 3 so as to cool the optoelectronic device 32 through the second heat sink 110 .

[0097] The second radiator 110 is formed with a plurality of second air-cooling channels, which extend along the height direction of the second heat dissipation body 11. Under the suction action of the fan 14, cold air enters the second air-cooling space 111 from the air inlet end, and the cold air is diverted and enters each second air-cooling channel. The extension direction of the second air-cooling channel is the same as the air inlet direction of the second air-cooling space 111. The cold air exchanges heat with the second radiator 110 in the second air-cooling channel, and becomes hot air after cooling the second radiator 110. The hot air is discharged from the air outlet end to complete the heat dissipation of the photoelectric device 32. The second heat dissipation body 11 has a simple structure, which is conducive to reducing the volume and reducing the production cost.

[0098] In this embodiment, the first heat sink 100 and the second heat sink 110 are both dense-tooth heat sinks. Specifically, the dense-tooth heat sink includes a support plate and a plurality of heat dissipating teeth. The plurality of heat dissipating teeth are arranged side by side and spaced apart on the support plate, and an air cooling channel is formed between every two adjacent heat dissipating teeth.

[0099] In the use state, each heat dissipation tooth of the first radiator 100 is horizontally arranged so that the second air-cooling channel extends along the length direction of the air-cooling heat dissipation device 1, and multiple heat dissipation teeth are arranged along the height direction of the air-cooling heat dissipation device 1.

[0100] Each heat dissipation tooth of the second heat sink 110 is vertically arranged so that the first air-cooling channel extends along the height direction of the air-cooling heat dissipation device 1 , and a plurality of heat dissipation teeth are arranged along the length direction of the air-cooling heat dissipation device 1 .

[0101] In this embodiment, the first heat sink 100 and the second heat sink 110 are made of copper. Copper has excellent thermal conductivity, which improves the heat dissipation efficiency of the pump source 30 and the optoelectronic device 32 .

[0102] In order to further improve the heat dissipation efficiency of the pump source 30 and the optoelectronic device 32 , the first heat sink 100 and the second heat sink 110 may be formed of copper profiles.

[0103] In the optional scheme of this embodiment, the fan 14 is a vortex fan or a centrifugal fan. The vortex fan and the centrifugal fan have high wind pressure and large suction air volume, so that more dense heat dissipation teeth can be used for heat dissipation, thereby increasing the arrangement density of the heat dissipation teeth of the first radiator 100 and the second radiator 110, increasing the heat dissipation area of ​​the first radiator 100 and the second radiator 110, and improving the heat dissipation efficiency of the air-cooled heat dissipation device 1.

[0104] Specifically, when using an axial flow fan, since the wind pressure of the axial flow fan is small, in order to ensure that the cold air flow rate is sufficient, it is necessary to reduce the wind resistance as much as possible, resulting in the heat dissipation teeth not being arranged too densely. The air-cooled heat dissipation device 1 is precisely because it uses a vortex fan or a centrifugal fan, which can increase the wind pressure to not less than 300Pa, thereby overcoming the greater wind resistance to draw cold air. In use, on the basis of the first air-cooling channel being arranged side by side along the height direction of the air-cooling heat dissipation device 1, a first radiator 100 can be used in which the heat dissipation teeth are horizontally arranged and the tooth gap between the heat dissipation teeth is not greater than 2mm. It is worth emphasizing that the tooth gap is not greater than 2mm, which means that the heat dissipation teeth are particularly densely arranged for a dense-tooth radiator.

[0105] It is understandable that, precisely because of the use of the vortex fan, a second heat sink 110 in which the heat dissipation teeth are vertically arranged and the tooth gap between the heat dissipation teeth is not greater than 2 mm can also be used.

[0106] Furthermore, by setting the thickness of the heat dissipation teeth of the first heat sink 100 and the second heat sink 110 to be no greater than 2 mm, more heat dissipation teeth can be arranged within a unit volume, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0107] Optionally, the vortex fan is fixed to the air outlet end of the first heat dissipation body 10 by a plurality of equal-height columns, so as to prevent the first heat dissipation body 10 or the vortex fan from being damaged by friction with each other due to deformation. Further, in order to protect the vortex fan and reduce the shaking of the vortex fan, a fan box is provided at the air outlet end of the first heat dissipation body 10, and the vortex fan is provided in the fan box.

[0108] Optionally, the vortex fan may be a variable frequency vortex fan, and the wind speed of the vortex fan is adjusted according to the working power and heat dissipation of the fiber laser 3 to achieve the purpose of energy saving and noise reduction.

[0109] Optionally, the number of vortex fans may be one, two or more, and may be determined according to the requirements of the installation space and the suction pressure.

[0110] Embodiment 2

[0111] Embodiment 2 provides a shell, which includes the air-cooling heat dissipation device of the optical fiber laser in Embodiment 1. The technical features of the air-cooling heat dissipation device of the optical fiber laser disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the air-cooling heat dissipation device disclosed in Embodiment 1 will not be described repeatedly.

[0112] Combination Figures 1 to 8 as well as Figures 10 to 12 , and see Fig. 9 As shown, the housing 2 provided in this embodiment includes a shell 20 and an air-cooling heat dissipation device 1 .

[0113] The housing 20 is commonly known as a chassis, and plays a role in protecting the components installed therein. In order to facilitate observation of the interior of the housing 20 , an observation window may be provided on the side of the housing 20 .

[0114] In order to facilitate the movement of the entire fiber laser 3 and improve portability, casters 31 may be provided at the bottom of the housing 20 so that the entire fiber laser 3 can be transported and transferred by pushing the housing 20 .

[0115] The air-cooling heat sink 1 is disposed inside the housing 20 , so that the housing 20 protects the air-cooling heat sink 1 , and further protects the pump source 30 and the optoelectronic device 32 installed in the air-cooling heat sink 1 .

[0116] The shell 20 is provided with an air inlet 21 and an air outlet 22. The air inlet 21 is provided corresponding to the air inlet end of the air-cooling heat dissipation device 1, and the air outlet 22 is provided corresponding to the fan 14 of the air-cooling heat dissipation device 1, so that the cold air entering the shell 20 through the air inlet 21 is promptly drawn to the air inlet end of the air-cooling heat dissipation device 1 by the fan 14, and the hot air sucked out by the fan 14 is promptly discharged from the air outlet 22 of the shell 20, thereby making the air inlet performance of the air-cooling heat dissipation device 1 not affected by the shell 20, thereby ensuring the air cooling effect of the pump source 30 and the optoelectronic device 32.

[0117] In an optional solution of this embodiment, the air outlet end of the air-cooling heat dissipation device 1 is arranged opposite to the bottom of the housing 20 to form an air inlet gap 23 , and the air inlet 21 is arranged on the side of the housing 20 facing the air inlet gap 23 .

[0118] Under the suction effect of the fan 14 of the air-cooled heat sink 1, the cold air enters the air inlet gap 23 through the air inlet 21 of the housing 20, and then flows upward from the air inlet gap 23 into the air-cooled heat sink 1. By setting the air inlet gap 23, the outer walls of the first heat sink 10 and the second heat sink 11 of the air-cooled heat sink 1 are prevented from blocking the air inlet 21, thereby reducing the wind resistance of the cold air inflow, which is conducive to increasing the air intake volume, and thus improving the air cooling effect. Among them, by setting the air inlet 21 on the side of the housing 20, compared with setting it at the bottom of the housing 20, it can effectively avoid sucking up dust on the ground.

[0119] Optionally, in order to facilitate the formation of the air inlet gap 23 , support seats 16 are provided at the bottom of both ends of the air-cooled heat dissipation device 1 in the length direction, so that the air-cooled heat dissipation device 1 is suspended relative to the bottom of the shell 2 under the support of the support seats 16 .

[0120] Optionally, the air inlet 21 and the air outlet 22 are provided with dustproof nets to reduce dust entering the interior of the fiber laser 3, thereby reducing the frequency of cleaning and maintenance.

[0121] The shell in this embodiment has the advantages of the air-cooling heat dissipation device in the first embodiment, and the advantages of the air-cooling heat dissipation device disclosed in the first embodiment will not be repeatedly described here.

[0122] Embodiment 3

[0123] Embodiment 3 provides a fiber laser, which includes the housing in Embodiment 2. The technical features of the housing disclosed in Embodiment 2 are also applicable to this embodiment, and the technical features of the housing disclosed in Embodiment 2 will not be described repeatedly.

[0124] Combination Figures 1 to 9 See also Figures 10 to 12 As shown, the fiber laser 3 provided in this embodiment includes a pump source 30 and a housing 2 , and the pump source 30 is disposed on a first heat sink 100 of the housing 2 , so that the pump source 30 is cooled by the first heat sink 100 .

[0125] The optical fiber laser in this embodiment has the advantages of the housing in the second embodiment, and the advantages of the housing disclosed in the second embodiment will not be described again here.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the present invention and form different embodiments. For example, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. An air-cooling heat dissipation device for a fiber laser, characterized in that: The air-cooling heat dissipation device comprises a fan (14), a first heat sink (100) and a first heat dissipation body (10); The two ends of the first heat dissipation body (10) in the height direction are respectively an air inlet end and an air outlet end, and the interior of the first heat dissipation body (10) forms an air inlet space (102), an air outlet space (103) and a first air cooling space (101); The fan (14) is arranged at the air outlet end, and the fan (14) draws cold air toward the air outlet space (103); One end of the air inlet space (102) in the height direction is connected to the air inlet end, and the other end of the air inlet space (102) in the height direction is blocked from the air outlet end; One end of the air outlet space (103) in the height direction is blocked from the air inlet end, and the other end of the air outlet space (103) in the height direction is connected to the air outlet end; The first radiator (100) is arranged in the first air-cooling space (101), the first radiator (100) is used to install a pump source (30) of a fiber laser, the first radiator (100) is formed with a plurality of first air-cooling channels, the first air-cooling channels being connected to the air inlet space (102) and the air outlet space (103); The number of the air inlet spaces (102) and the number of the air outlet spaces (103) are both plural, one air inlet space (102) and one air outlet space (103) form an air duct assembly, and the air inlet space (102) and the air outlet space (103) in each of the air duct assemblies are connected via at least one air cooling space; The first heat dissipation body (10) comprises a partition plate (104), a baffle plate (105), a first air guide plate (106) and a second air guide plate (107); The number of the partitions (104) is plural, and the plurality of partitions (104) are sequentially arranged at intervals along the length direction of the air-cooling heat dissipation device, so that a cavity is formed between two adjacent partitions (104); The baffle (105) is arranged in the cavity so that the cavity is divided into the air inlet space (102) and the air outlet space (103); The first air guide plate (106) covers the end of the air inlet space (102) facing the air outlet end, and the second air guide plate (107) covers the end of the air outlet space (103) facing the air inlet end; The first heat dissipation body (10) further comprises a mounting plate (109) and a cover plate (108); Both ends of the baffle (105) in the width direction are connected to the mounting plate (109), the mounting plate (109) is perpendicular to the baffle (105), and both ends of the mounting plate (109) in the length direction extend into the air inlet space (102) and the air outlet space (103) respectively, and the first radiator (100) is arranged on the mounting plate (109); The cover plate (108) is arranged at an outer side of the mounting plate (109) at intervals along the width direction of the baffle plate (105), and the first air cooling space (101) is formed between the cover plate (108) and the mounting plate (109); A first gap is formed between one end of the mounting plate (109) in the length direction and the partition plate (104) close to the air inlet space (102), so that the first air cooling space (101) is connected to the air inlet space (102) through the first gap; A second gap is formed between the other end of the mounting plate (109) in the length direction and the partition plate (104) close to the air outlet space (103), so that the first air cooling space (101) is connected to the air outlet space (103) through the second gap.

2. The air-cooling heat dissipation device for a fiber laser according to claim 1, characterized in that: A plurality of first radiators (100) are arranged in the first air cooling space (101), and the plurality of first radiators (100) are arranged in sequence along a height direction of the first air cooling space (101); The first air cooling channel extends along the length direction of the first heat dissipation body (10).

3. The air-cooling heat dissipation device for a fiber laser according to claim 1, characterized in that: The fan (14) is a vortex fan or a centrifugal fan; The wind pressure of the fan (14) is not less than 300 Pa; And / or, the air-cooling heat dissipation device further comprises a second heat dissipation body (11), the second heat dissipation body (11) forms a second air-cooling space (111), and the second air-cooling space (111) runs through the air inlet end and the air outlet end; The second air cooling space (111) is provided with a second radiator (110), the second radiator (110) is formed with a plurality of second air cooling channels, and the second air cooling channels extend along the height direction of the second heat dissipation body (11).

4. The air-cooling heat dissipation device for a fiber laser according to claim 3, characterized in that: The first heat sink (100) and the second heat sink (110) are both close-tooth heat sinks, each of which comprises a plurality of heat dissipation teeth arranged side by side and spaced apart from each other; The tooth gap between adjacent heat dissipation teeth is no greater than 2 mm; The thickness of the heat dissipation teeth is not greater than 2 mm; The material of the first heat sink (100) and the second heat sink (110) includes copper.

5. A fiber laser, characterized in that: A wind-cooling heat dissipation device for a fiber laser comprising a pump source (30) and any one of claims 1 to 4.

6. The optical fiber laser according to claim 5, characterized in that: It also includes a shell (20), the air-cooling heat dissipation device is arranged inside the shell (20), the shell (20) is provided with an air inlet (21) and an air outlet (22), the air inlet (21) is arranged corresponding to the air inlet end of the air-cooling heat dissipation device, and the air outlet (22) is arranged corresponding to the fan (14) of the air-cooling heat dissipation device.

7. The optical fiber laser according to claim 6, characterized in that: The air outlet end of the air-cooling heat dissipation device is arranged opposite to the bottom of the housing (20) to form an air inlet space (23), and the air inlet (21) is arranged on the side of the housing (20) facing the air inlet space (23).

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