Air-cooled laser

Abstract

Disclosed in the embodiments of the present application is an air-cooled laser, comprising: a main structure, air-cooled assemblies, and mounting devices mounted on the outer surface of the main structure, wherein the main structure is cylindrical and comprises two opposite ports, with several communicating channels provided between the two ports; the air-cooled assemblies are respectively mounted at the two ports to use the channels as air ducts to perform heat dissipation on the main structure; the main structure is composed of at least one polygonal prism structure and at least one cylindrical structure, with the polygonal prism structure and the cylindrical structure sharing the channels; the polygonal prism structure comprises a plurality of cylindrical surfaces; any one of the cylindrical surfaces of the polygonal prism structure is a first region, and the outer surface of the cylindrical structure is a second region; and the first region is configured for mounting of the mounting devices, and the second region is configured for coiling of an optical fiber. By means of adopting the embodiments of the present invention, the overall volume of the laser can be reduced; moreover, the air ducts can be utilized to uniformly dissipate heat from multiple surfaces of the devices mounted on the outer surface of the main structure, thereby effectively improving the heat dissipation efficiency of the laser.

Description

air-cooled laser Technical Field

[0001] This application relates to the field of fiber laser technology, specifically to an air-cooled laser. Background Technology

[0002] With the development of laser technology, lasers have become an important force in military equipment and civilian devices, and their applications in daily life are becoming increasingly widespread, such as in welding and cutting. Lasers in related technologies mainly consist of a pump source, power supply, main control board, heat dissipation structure, and a rectangular housing that houses these components. During use, they can be connected to an external optical fiber connector to meet various application requirements.

[0003] However, lasers generate a significant amount of heat while performing their functions, necessitating effective heat dissipation. In related technologies, air cooling is commonly used. This involves installing fans on opposite sides of the laser housing to create airflow channels, thereby drawing the high-temperature gas inside the laser housing to the outside and achieving air cooling.

[0004] While air-cooled lasers in related technologies possess some heat dissipation capabilities, their large size is significantly increased due to the integration of numerous components within a rectangular housing and the need to move the fiber optic cable for external connection during laser operation. Furthermore, their lack of ergonomic design reduces portability. Secondly, air-cooled lasers in these technologies only utilize two sides of the airflow channel for heat dissipation, which is ineffective for high-power laser operation. Thirdly, the rectangular housing structure of air-cooled lasers results in poor vibration and shock resistance. Finally, the mounting of various components on a single plane prevents optimal space utilization.

[0005] Therefore, there is an urgent need for a new type of laser to solve at least one technical problem in the related technologies. Summary of the Invention

[0006] This application provides an air-cooled laser to solve at least one technical problem existing in the related art.

[0007] In one respect, in order to solve the above-mentioned technical problems, this application provides an air-cooled laser, including: a main structure, an air-cooling component, and a mounting device installed on the outer surface of the main structure, wherein the mounting device includes one or more of a pump source, an optical fiber coupler, a main control board, and a power supply;

[0008] The main structure is cylindrical and includes two opposite ports. The interior of the main structure has several interconnected channels between the two ports. The air-cooling components are respectively installed at the two ports to use the channels as air ducts to dissipate heat from the main structure.

[0009] The main structure consists of at least one multifaceted prism structure and at least one cylindrical structure. The multifaceted prism structure and the cylindrical structure share the channel. The cylindrical structure includes an integral structure with a fixed outer diameter and multiple spliced ​​structures with different outer diameters that are fixedly connected to each other and share the channel.

[0010] The multifaceted prism structure includes multiple prism faces, any one of the prism faces is a first region, and the outer surface of the cylindrical structure is a second region. The first region is used to install the mounting device, and the second region is used to coil the optical fiber.

[0011] In this embodiment of the invention, the port includes an air inlet port and an air outlet port, and the air-cooled laser also includes an output optical cable head, which is connected to the output end of the optical fiber and is installed on the outer surface of the air inlet port.

[0012] In this embodiment of the invention, the air-cooled laser further includes a housing, which is connected to the outside of the main structure via a step or screw hole with a screw hole provided on the main structure.

[0013] In this embodiment of the invention, the housing includes a one-piece housing and a multi-piece housing;

[0014] The integrated outer shell has a circular or square cross-section and is used to fit over the outside of the main structure for connection with the outside of the main structure.

[0015] The multi-body housing includes multiple arc-shaped rings, and a connecting flange is provided between each arc-shaped ring. The multi-body housing is used to be installed on the outside of the main structure, and the connecting flange is used to connect adjacent arc-shaped rings installed on the outside of the main structure.

[0016] In this embodiment of the invention, the outer shell is provided with a handle, a first protrusion structure, a second protrusion structure, and a third protrusion structure;

[0017] The handle is connected to the outer shell via the first protruding structure, the second protruding structure is used to avoid the output optical cable head, and the third protruding structure is used to avoid the power supply.

[0018] In an embodiment of the invention, the outer surface of the housing is provided with a limiting structure for winding the optical cable connected to the output optical cable head, and the limiting structure is used to wind the optical cable.

[0019] In this embodiment of the invention, the main structure has three cylindrical structures, the outer diameters of the three cylindrical structures are the same or different from each other, and the second regions on the three cylindrical structures are the first fiber coil region, the second fiber coil region and the third fiber coil region, respectively. The second fiber coil region is provided with a single-threaded structure.

[0020] The fiber coupler is used to combine and couple the optical fibers of the first and third fiber coils to the single-threaded structure of the second fiber coil.

[0021] In an embodiment of the invention, the second region is provided with at least one combined structure, which is used to place the optical fiber splice point, and the combined structure is composed of a threaded structure and an arc structure.

[0022] The threaded structure includes an inner threaded diameter structure and an outer threaded diameter structure. Both the inner and outer threaded diameter structures include a first arc and a second arc. The curvature of the first arc is not less than the curvature of the second arc. The first arc is located in the middle, with an outer diameter of not less than 500 mm, and is used to place the optical fiber splice point. The second arc is located on both sides of the first arc, and is located between the first arc and the main arc of the main structure. The radius of the second arc is not less than the minimum bending radius of the optical fiber.

[0023] In this embodiment of the invention, the curvature of the first arc is 0, and the first arc is a straight line.

[0024] In this embodiment of the invention, at least one prism face of the multifaceted prism structure is provided with a fiber routing groove, which is connected to the adjacent threaded structure and is used for fiber routing.

[0025] In this embodiment of the invention, the outer diameter of the cylindrical structure is D, and the outer diameter of the multifaceted prism structure ranges from D to 1.05D. The outer diameter of the multifaceted prism structure is determined by the envelope circle of the projection pattern of the structure on the cross section perpendicular to the main axis of the main structure.

[0026] The projection of the multifaceted prism structure onto a cross section perpendicular to the main axis of the main structure includes regular polygons and non-regular polygons with unequal side lengths evenly distributed around the axis.

[0027] In this embodiment of the invention, when the projection of the polyhedral prism structure onto a cross section perpendicular to the main axis of the main structure is a regular polygon, the width of the pump source is I, and the value of I ranges from 0.6Dsin(π / n) to Dsin(π / n).

[0028] The installation device also includes a stripper, and the width of the fiber coupler, the stripper, and the output optical cable head ranges from 0.3Dsin(π / n) to Dsin(π / n), where n is the number of sides in the regular polygon.

[0029] In this embodiment of the invention, when the projection of the multifaceted prism structure onto the cross section perpendicular to the main axis of the main structure is a non-regular polygon, the width of the pump source is I, and the value of I ranges from 0.8Dsin(π / n) to 1.2Dsin(π / n).

[0030] The mounting device also includes a stripper, and the width of the fiber coupler, the stripper, and the output optical cable head ranges from 0.3Dsin(π / n) to 0.8Dsin(π / n), where n is the number of sides in the non-regular polygon.

[0031] In this embodiment of the invention, all mounting devices are cuboid structures, and all mounting devices are mounted on the surface of the multifaceted prism structure with their length direction parallel to the axial direction of the main structure.

[0032] In this embodiment of the invention, the air-cooled laser provided in this embodiment also includes a temperature sensor, which is disposed inside the main structure and is used to collect temperature data inside the main structure.

[0033] The main control board is connected to the temperature sensor and the air-cooling component respectively. The main control board is used to receive the temperature data sent by the temperature sensor and adjust the current working power of the air-cooling component according to the preset heat dissipation strategy and the temperature data. The preset heat dissipation strategy includes increasing the working power when the temperature data is greater than the target temperature threshold and decreasing the working power when the temperature data is not greater than the target temperature threshold.

[0034] In this embodiment of the invention, the internal channel between the two ports of the main structure is composed of a plurality of diverging racks and support rings;

[0035] The rack includes a forked support rack and a non-forked support rack;

[0036] One end of the forked support rack and the unforked support rack are respectively fixedly connected to the outer wall of the support ring, and the other end are respectively fixedly connected to the inner wall of the main structure.

[0037] In this embodiment of the invention, the rack includes a strip-shaped rack, which is arranged in an array inside the channel and is evenly distributed on the inner wall of each of the faces of the polyhedral prism structure, and is fixedly connected to the outer wall of the support ring.

[0038] This application provides an air-cooled laser. By installing mounting devices on any one of the cylindrical faces of the multifaceted prism structure in the main structure and winding optical fibers on the outer surface of the cylindrical structure in the main structure, the overall volume of the laser can be effectively reduced. At the same time, a connected air duct is formed inside the main structure, and air-cooling components are installed at opposite ends of the air duct. This enables the air duct to uniformly dissipate heat from the mounting devices installed on the outer surface of the main structure, effectively improving the heat dissipation efficiency of the laser. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 is an exploded view of an air-cooled laser provided in an embodiment of the present invention;

[0041] Figure 2 is a schematic diagram of a main structure provided in an embodiment of the present invention;

[0042] Figure 3 is a schematic diagram of an assembled air-cooled laser provided in an embodiment of the present invention;

[0043] Figure 4 is a schematic diagram of a shell provided in an embodiment of the present invention;

[0044] Figure 5a is a schematic diagram of another structure of the assembled air-cooled laser provided in an embodiment of the present invention;

[0045] Figure 5b is a schematic diagram of the third structure of the assembled air-cooled laser provided in an embodiment of the present invention;

[0046] Figures 6a and 6b are schematic diagrams of another structure of the main structure provided in the embodiment of the present invention;

[0047] Figures 6c and 6d are schematic diagrams of the third type of main structure provided in the embodiments of the present invention;

[0048] Figure 7a is a schematic diagram of the fourth possible structure of the main structure provided in the embodiment of the present invention;

[0049] Figure 7b is a partially enlarged schematic diagram of the main structure provided in an embodiment of the present invention;

[0050] Figures 8a and 8b are comparative schematic diagrams of air-cooled lasers provided in related technologies and air-cooled lasers provided in this embodiment.

[0051] Figure 9 is a schematic diagram of a port side of the main structure provided in an embodiment of the present invention;

[0052] Figures 10a and 10b are simulation diagrams of the impact resistance of the air-cooled laser provided in the embodiment of the present invention under external torque.

[0053] Figure 10c is a simulation diagram of the impact resistance of a wind-cooled laser under external torque provided in the related technology.

[0054] Figure 11 is a schematic diagram of the air outlet port side of the assembled air-cooled laser provided in an embodiment of the present invention.

[0055] Figure 12 is a schematic diagram of an application scenario of the air-cooled laser provided in an embodiment of the present invention;

[0056] Figure 13 is a schematic diagram of another application scenario of the air-cooled laser provided in the embodiment of the present invention;

[0057] The reference numerals in the accompanying drawings are as follows:

[0058] 1. Main structure; 2. Outer shell; 3. Output optical cable head; 4. Pump source; 5. Power supply; 6. Main control board; 7. Red light pump source; 8. Fiber optic coupler; 9. Stripper; 10. Optical cable bracket; 11. Scattered light detector; 12. Adapter bracket; 13. Mounting pad; 14. Air-cooling assembly; 15. End cap; 16. Air-cooling assembly; 17. End cap; 18. Light output button; 19. Power button; 20. Power socket; 21. Handle / strap; 22. Step; 23. Second protrusion structure; 24. Combined structure; 25. First protrusion structure; 26. Limiting structure; 27. Fiber routing channel; 241. Threaded structure; 242. Arc structure;

[0059] A. First area; A1. First installation area; A2. Second installation area; A3. Third installation area; B. Second area; B1. First fiber optic coil area; B2. Second fiber optic coil area; B3. Third fiber optic coil area; L1. First arc; L2. Second arc;

[0060] 1-1, Support ring; 1-2, Unbranched support rack; 1-3, Bifurted support rack; 1-4, Short tooth; 1-5, Boss. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] In the description of this application, it should be understood that the terms "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, " / " means "or."

[0063] Reference numbers and / or reference letters may be repeated in different examples in this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various implementations and / or settings discussed.

[0064] In this embodiment of the invention, the high-power fiber laser generates a large amount of heat while performing its function, thus requiring effective heat dissipation. In related technologies, a common heat dissipation method is water cooling. A water cooling system mainly includes a fan, a water pump, a heat exchange unit, and a radiator. Its working principle involves heat exchange between the heat exchange unit and the laser's heat-generating module, followed by water pumping the exchanged water to an external radiator, and finally, a fan blowing air onto the radiator to dissipate heat.

[0065] While lasers with water-cooling systems provided in related technologies have a certain heat dissipation capacity, the introduction of water-cooling systems significantly increases the size of the laser, reducing its portability. Furthermore, condensation easily forms inside the laser in summer and in high-humidity environments, which can severely damage the laser and reduce its reliability. To ensure reliable operation, a dehumidification device needs to be added inside the laser, further increasing cost and size. For single-temperature, single-control or low-performance water-cooled systems, the lack of a filtration system negatively impacts laser performance and lifespan, further reducing reliability.

[0066] Therefore, there is an urgent need for a new type of laser to solve at least one technical problem in the related technologies.

[0067] To solve the above technical problems, please refer to Figures 1, 2, and 3. Figure 1 is an exploded view of a wind-cooled laser provided in an embodiment of the present invention. Figure 2 is a structural schematic diagram of the main structure provided in an embodiment of the present invention. Figure 3 is a structural schematic diagram of an assembled wind-cooled laser provided in an embodiment of the present invention. Specifically, as shown in Figures 1, 2, and 3, this application provides a wind-cooled laser, including: a main structure 1, a wind-cooling component 14, and mounting devices installed on the outer surface of the main structure 1. The mounting devices include one or more of a pump source 4, an optical fiber coupler 8, a main control board 6, and a power supply 5.

[0068] The main structure 1 is cylindrical and includes two opposite ports. The interior of the main structure 1 has several interconnected channels between the two ports. The air-cooling components 14 are respectively installed at the two ports to use the channels as air ducts to dissipate heat from the main structure 1.

[0069] The main structure 1 is composed of at least one multifaceted prism structure and at least one cylindrical structure. The multifaceted prism structure and the cylindrical structure share the channel. The cylindrical structure includes an integral structure with a fixed outer diameter and multiple spliced ​​structures with different outer diameters that are fixedly connected to each other and share the channel.

[0070] The multifaceted prism structure includes multiple cylindrical faces. Any one of the cylindrical faces of the multifaceted prism structure is a first region A, and the outer surface of the cylindrical structure is a second region B. The first region A is used to install the mounting device, and the second region B is used to coil the optical fiber.

[0071] In this embodiment, the cylindrical structure provided can be a single integral structure with a fixed outer diameter, or it can be a structure composed of multiple spliced ​​structures with different outer diameters that are fixedly connected to each other and share the channel. Specifically, some lasers require multiple optical fibers of different specifications for use. These different specifications of optical fibers have different cladding outer diameters and different bending radii. For example, the MOPA laser requires two specifications of optical fibers, which have different cladding outer diameters and different bending radii.

[0072] Therefore, when this embodiment is applied to a conventional laser (using a single type of optical fiber), the cylindrical structure can be an integral structure with a fixed outer diameter that can meet the bending radius of a single type of optical fiber. When this embodiment is applied to a specific laser (using multiple types of optical fibers), the cylindrical structure can be a structure composed of multiple splicing structures with different outer diameters that are fixedly connected to each other and share the channel. In this way, different splicing structures can be set with outer diameters corresponding to the optical fiber parameters according to the optical fiber parameters of different specifications, so as to meet the bending radius of each type of optical fiber and ensure the normal winding of each type of optical fiber.

[0073] When the air-cooled laser provided in this embodiment is equipped with the pump source 4 and the power supply 5, the power supply 5 provided in this embodiment is electrically connected to the pump source 4 and the air-cooling component 14 respectively, thereby supplying power to the pump source 4 and the air-cooling component 14; at the same time, the second region B provided in this embodiment can be used to coil the optical fiber led out from the pump source 4.

[0074] Specifically, in this embodiment, there can be multiple pump sources 4. These multiple pump sources 4 can be evenly distributed in the first region A of the multifaceted prism structure, specifically by surrounding and closely adhering to the outer surface of the multifaceted prism structure to improve heat transfer efficiency. Similarly, the power supply 5 provided in this embodiment can also be evenly distributed in the first region A of the multifaceted prism structure, specifically by surrounding and closely adhering to the outer surface of the multifaceted prism structure.

[0075] It should be noted that the heat-generating mounting devices provided in this embodiment, such as the pump source 4 and the power supply 5, are all mounted on the outer surface of the main structure 1 with their sides having the largest surface area in close contact with the outer surface of the main structure 1, so as to transfer the heat generated by the devices to the greatest extent and thereby improve the heat dissipation efficiency.

[0076] The multifaceted prism structure provided in this embodiment can be an axisymmetric structure, such as a cube, hexahedron, or octahedron, to allow for the installation of mounting devices such as the pump source 4 and the power supply 5 on each face of the multifaceted prism structure. The cylindrical structure provided in this embodiment can be cylindrical or near-cylindrical to facilitate the convenient and safe winding of the optical fiber.

[0077] Furthermore, when the number of mounting devices to be installed on the main structure 1 is odd, the multifaceted prism structure provided in this embodiment can also be a non-axisymmetric structure, so that the odd number of mounting devices can be installed on each face of the multifaceted prism structure. Specifically, one or more mounting devices can be installed on each face of the multifaceted prism structure in this embodiment, as long as the side with the largest surface area of ​​the mounting device is in close contact with the outer surface of the multifaceted prism structure to facilitate the maximum transfer of heat generated by the device. No specific limitation is made here.

[0078] In this embodiment, heat-generating mounting devices, such as a pump source 4 and a power supply 5, are installed on the outer surface of the multifaceted prism structure to transfer the heat generated by these devices to the main structure 1. Then, by forming several interconnected channels inside the main structure 1 and installing two sets of air-cooling components 14 at opposite ports of the main structure 1, the air-cooling components 14 can be driven to operate, using the channels as air ducts to dissipate heat from the main structure 1, thus achieving uniform heat dissipation across multiple surfaces. Therefore, by uniformly distributing the mounting devices on each prism surface of the multifaceted prism structure, the air ducts can be used more effectively to dissipate heat from the mounting devices on each prism surface of the multifaceted prism structure in 360°, thereby effectively improving heat dissipation efficiency and maximizing the heat dissipation utilization efficiency of the fan.

[0079] Meanwhile, in this embodiment of the invention, mounting devices such as pump source 4 and power supply 5 are installed close to the outer surface of the multifaceted prism structure. This not only enables rapid heat dissipation of these devices but also effectively reduces the overall size of the air-cooled laser provided in this embodiment. As a result, the air-cooled laser provided in this embodiment can conform to an ergonomic configuration, making it convenient to use in the field without support when used with a power battery.

[0080] Compared to air-cooled lasers in related technologies, this embodiment effectively reduces the overall size of the laser by mounting the mounting devices closely to the outer surface of the multifaceted prism structure, making it easier to carry and thus improving the laser's portability. Furthermore, compared to air-cooled lasers in related technologies that only utilize two sides of the air duct for heat dissipation, this embodiment fully utilizes the evenly distributed multi-dimensional air duct for heat dissipation, effectively improving the heat dissipation efficiency of the laser and achieving the goals of lightweight miniaturization, portability, practicality, and efficient heat dissipation. Finally, compared to the technical solutions of air-cooled lasers in related technologies that mount various devices on the same plane, this embodiment achieves optimal space utilization.

[0081] Optionally, please continue to refer to Figure 1. The first region A on the outer surface of the air-cooled laser provided in this embodiment may also be provided with laser-common mounting devices such as a red light pump source 7, a stripper 9, an optical cable bracket 10, and a scattered light detector 11. The mounting devices that can be installed on the first region A are not limited to the mounting devices indicated in this embodiment, but may also be other mounting devices that can constitute a laser, which are not specifically limited here.

[0082] In some embodiments, the port provided in this embodiment may include an air inlet port and an air outlet port. The air-cooled laser may also include an output optical cable head 3, which is connected to the output end of the optical fiber. The output optical cable head 3 is installed on the outer surface of the air inlet port.

[0083] In this embodiment, the air-cooling component 14 provided in this embodiment can be a fan. The fan installed at the air inlet port can be a blower fan that blows air towards the air outlet port, and the fan installed at the air outlet port can be an exhaust fan that draws air towards the air inlet port. In this way, several channels inside the main structure 1 can be used as air ducts to evenly distribute heat dissipation on multiple surfaces of the main structure 1.

[0084] In this embodiment, the output optical cable head 3 can be evenly distributed in an array with multiple pump sources 4 in a first region A near the air inlet port, and the output end of the output optical cable head 3 extends above the blower. Specifically, the output optical cable head 3 is mounted on the mounting surface of the outer surface of the main structure 1, and the shortest distance from the nearest channel is less than 7.5 mm. This not only improves heat dissipation efficiency but also reduces the overall size of the laser.

[0085] In this embodiment, the output optical cable head 3 provided in this embodiment can be removed from the main structure 1, so that it can be integrated and assembled with processing head components such as welding guns to meet different needs such as handheld welding, cleaning, and cutting.

[0086] Compared to air-cooled lasers in related technologies that require additional handling and external connection of the optical cable head, the air-cooled laser provided in this embodiment reduces transportation costs and further improves the portability of the air-cooled laser provided in this embodiment by integrating the optical cable head 3 on the outer surface of the main structure 1.

[0087] In some embodiments, please refer to Figures 2, 4, 5a, and 5b simultaneously. Figure 4 is a schematic diagram of one structure of the housing provided in an embodiment of the present invention. Figure 5a is a schematic diagram of another structure of the assembled air-cooled laser provided in an embodiment of the present invention. Figure 5b is a schematic diagram of a third structure of the assembled air-cooled laser provided in an embodiment of the present invention. As shown in Figures 2, 4, 5a, and 5b, the air-cooled laser provided in this embodiment may further include a housing 2. The housing 2 is connected to the outside of the main structure 1 through a step 22 with a screw hole or a screw hole (not shown in the figure) provided on the main structure 1.

[0088] In this embodiment, the outer surface of the main structure 1 provided in this embodiment can be provided with a plurality of steps 22 with screw holes, and the outer shell 2 can be fixedly connected to the main structure 1 through the steps 22 to form an integral structure.

[0089] In this embodiment, the outer shell 2 may include a one-piece outer shell and a multi-piece outer shell. The cross-section of the one-piece outer shell may be circular or square. The one-piece outer shell is used to fit over the outside of the main structure to connect with the outside of the main structure. The multi-piece outer shell may include multiple arc-shaped rings, and a connecting flange is provided between each arc-shaped ring. The multi-piece outer shell is used to be installed on the outside of the main structure, and the connecting flange is used to connect adjacent arc-shaped rings installed on the outside of the main structure.

[0090] In this embodiment, the cross-section of the outer casing 2 provided in this embodiment can be annular. The outer casing 2 can be provided with a handle 21, a first protrusion structure 25, a second protrusion structure 23 and a third protrusion structure (not shown in the figure). The handle 21 can be connected to the outer casing 2 through the first protrusion structure 25. The second protrusion structure 23 is used to avoid the output optical cable head 3. The third protrusion structure is used to avoid the power supply 5, such as a DC-DC power supply.

[0091] In order to facilitate the removal of the output optical cable head 3, the second protruding structure 23 provided in this embodiment can be detachably installed on the outer shell 2. Specifically, it can be detachably installed by means of screw threads or by means of snap-fit, as long as it facilitates the removal of the output optical cable head 3, no specific limitation is made here.

[0092] As an optional embodiment, the inner surface of the outer shell 2 provided in this embodiment may be provided with reinforcing ribs, specifically including long ribs supporting the longitudinal direction of the outer shell 2 and circular ribs supporting the transverse direction of the outer shell 2. Through holes may be distributed at the intersection of the longitudinal and transverse reinforcing ribs for mounting to cooperate with the step 22 on the main structure 1, so as to fit the outer shell 2 onto the main structure 1 and achieve integrated assembly.

[0093] Furthermore, to further improve the portability of the air-cooled laser provided in this embodiment, please continue to refer to Figures 1 and 5a. The air-cooled laser provided in this embodiment may also include a shoulder strap 21. The shoulder strap 21 can be installed on the outer surface of the housing 2. After the housing 2 and the main structure 1 are integrated, the air-cooled laser can be easily carried as a whole through the shoulder strap 21, thereby effectively improving the portability of the air-cooled laser.

[0094] Furthermore, please refer to Figure 5b. The outer surface of the housing 2 provided in this embodiment may also be provided with a limiting structure 26 for winding the optical cable connected to the output optical cable head 3. The limiting structure 26 is used to wind the optical cable.

[0095] In this embodiment, by setting a first region A with different surface area sizes for different mounting devices, the installation of various devices of different volumes can be satisfied, effectively ensuring that each mounting device can be tightly attached to the multifaceted prism structure, thereby improving heat transfer efficiency while effectively reducing the overall volume of the laser.

[0096] As an optional embodiment, please continue to refer to Figures 1 and 2. The main structure 1 can have three cylindrical structures. The outer diameters of the three cylindrical structures are the same or different. The second region B on the three cylindrical structures are respectively the first fiber coil region B1, the second fiber coil region B2, and the third fiber coil region B3. The second fiber coil region B2 is provided with a single-threaded structure. The fiber coupler 8 is used to bundle and couple the optical fibers of the first fiber coil region B1 and the third fiber coil region B3 to the single-threaded structure of the second fiber coil region B2, thereby meeting the fiber coiling requirements of high-power lasers.

[0097] In this embodiment, the cylindrical structure can be a single integral structure with a fixed outer diameter, or it can be a structure composed of multiple spliced ​​structures with different outer diameters that are fixedly connected to each other and share the channel. Therefore, the first fiber coil area B1, the second fiber coil area B2, and the third fiber coil area B3 provided in this embodiment can all be a single fiber coil area, or they can be fiber coil areas spliced ​​together from multiple spliced ​​fiber coil areas.

[0098] For example, please refer to Figures 6a and 6b, which are schematic diagrams of another main structure provided in the embodiment of the present invention. As shown in Figures 6a and 6b, the cylindrical structure provided in this embodiment can be formed by splicing two structures with different outer diameters, thereby forming two different second fiber coil areas B2 for coiling optical fibers of different specifications.

[0099] In one embodiment, Figure 2 shows a schematic diagram of the main structure 1 of the wind-cooled laser provided in this embodiment. As shown in Figure 2, the number of multifaceted prism structures provided in this embodiment can also be three. The first region A on the three multifaceted prism structures are respectively the first mounting region A1, the second mounting region A2, and the third mounting region A3. As shown in Figure 2, the first fiber optic coil region B1 and the third fiber optic coil region B3 provided in this embodiment are located near the two ports, respectively, and the second fiber optic coil region B2 is located between the first fiber optic coil region B1 and the third fiber optic coil region B3. Specifically, the region between the second fiber optic coil region B2 and the first fiber optic coil region B1 is the first mounting region A1, and the region between the second fiber optic coil region B2 and the third fiber optic coil region B3 is the second mounting region A2 and the third mounting region A3.

[0100] It should be noted that the second mounting area A2 and the third mounting area A3 provided in this embodiment are interconnected. In this embodiment, the second mounting area A2 and the third mounting area A3 can be regarded as two different areas, or they can be regarded as a single mounting area. Similarly, any mounting area provided in this embodiment can also be a region composed of one or more mounting areas. The specific configuration can be determined according to the device to be installed, and no specific limitation is made here.

[0101] In this embodiment, at least two fiber optic couplers 8 are provided. At least one fiber optic coupler 8 is provided in the first mounting area A1 between the first fiber reel area B1 and the second fiber reel area B2, and in the second mounting area A2 between the second fiber reel area B2 and the third fiber reel area B3, respectively, to couple the fiber bundles of the first fiber reel area B1 and the third fiber reel area B3 to the single-threaded structure of the second fiber reel area B2. Optionally, the fiber optic coupler 8 provided in this embodiment can be a 6+1 coupler.

[0102] Specifically, in this embodiment, the first fiber coiling area B1 and the third fiber coiling area B3 are passive fiber areas, and the second fiber coiling area B2 is an active fiber area. The specific assembly process for winding the fiber in this embodiment is as follows: after the pump source 4 emits light, the fiber is first coiled in the corresponding passive fiber area, and then the fiber in each passive fiber area is coupled to the active fiber area in the middle through the fiber coupler 8. The fiber fusion splice can be located in the middle active fiber area. During assembly, the un-fused pump source 4 and fiber can be placed in a special fixture, and after fusion splicing, they are then wound into the fiber coiling area, thus effectively avoiding the problem of excess fiber entanglement.

[0103] As an optional embodiment, the mounting device may further include a stripper 9. The outer diameter of the cylindrical structure provided in this embodiment can be set to D, and the outer diameter of the multifaceted prism structure is in the range of D to 1.05D. The outer diameter of the multifaceted prism structure is determined by the envelope circle of the projection of the structure onto the cross-section perpendicular to the main axis of the main structure 1. The projection of the multifaceted prism structure onto the cross-section perpendicular to the main axis of the main structure 1 may include regular polygons and non-regular polygons with unequal side lengths evenly distributed around the axis.

[0104] In one embodiment, when the projection of the polyhedral prism structure onto a cross section perpendicular to the main axis of the main structure 1 is a regular polygon, the width of the pump source 4 can be set to I, where I ranges from 0.6Dsin(π / n) to Dsin(π / n); the widths of the fiber coupler 8, the stripper 9, and the output optical cable head 3 can range from 0.3Dsin(π / n) to Dsin(π / n), where n is the number of sides in the regular polygon.

[0105] In another embodiment, when the projection of the polyhedral prism structure onto a cross section perpendicular to the main axis of the main structure 1 is a non-regular polygon, the width of the pump source 4 is I, and the value of I ranges from 0.8Dsin(π / n) to 1.2Dsin(π / n); the widths of the fiber coupler 8, the stripper 9, and the output optical cable head 3 range from 0.3Dsin(π / n) to 0.8Dsin(π / n), where n is the number of sides in the non-regular polygon.

[0106] To further reduce the overall size of the air-cooled laser, this embodiment can also configure all mounting devices on the main structure 1 as cuboid structures, with each mounting device mounted on the surface of the multifaceted prism structure with its length direction parallel to the axial direction of the main structure. Furthermore, in this embodiment, the height difference between any two mounting devices among the pump source 4, mode stripper 9, fiber coupler 8, and output optical cable head 3 is within 30%, thus ensuring that the envelope circle of the multifaceted prism structure has the smallest cross-sectional area, thereby achieving the goal of miniaturizing the entire air-cooled laser.

[0107] In some embodiments, the air-cooled laser provided in this embodiment may further include a temperature sensor (not shown in the figure), which is disposed inside the main body structure 1 and is used to collect temperature data inside the main body structure 1. The main control board 6 is connected to the temperature sensor and the air-cooling component 14 respectively. The main control board 6 is used to receive the temperature data sent by the temperature sensor and adjust the current operating power of the air-cooling component 14 according to a preset heat dissipation strategy and the temperature data. The preset heat dissipation strategy includes increasing the operating power when the temperature data is greater than the target temperature threshold and decreasing the operating power when the temperature data is not greater than the target temperature threshold.

[0108] In this embodiment, a temperature experiment can be conducted before setting the target temperature threshold to determine the optimal ambient temperature for the installed device. Then, at 1-5°C intervals, the operating power of the air-cooling component 14, such as the fan speed, is adjusted to maintain the optimal ambient temperature for the installed device, i.e., the temperature inside the main structure 1. Based on this, the corresponding heat dissipation strategy can be determined by recording the relationship between temperature and the operating power parameters of the air-cooling component 14. In this way, the fan speed can be increased at high temperatures and decreased at low temperatures, thereby achieving energy saving and noise reduction.

[0109] Specifically, the target temperature threshold provided in this embodiment can be set according to the ambient temperature required for different installation devices to operate normally, and no specific limitation is made here.

[0110] As an optional embodiment, please refer to Figures 6c and 6d. Figures 6c and 6d are schematic diagrams of the third structure of the main body of the wind-cooled laser provided in the embodiment of the present invention. As shown in Figures 6c and 6d, at least one prism surface on the multifaceted prism structure provided in this embodiment may also be provided with a fiber routing groove 27. The fiber routing groove 27 is connected to the adjacent threaded structure respectively, and the fiber routing groove 27 is used for the routing of optical fibers.

[0111] In another embodiment, please refer to Figures 7a and 7b. Figure 7a is a schematic diagram of the fourth structure of the main body of the wind-cooled laser provided in this embodiment of the invention, and Figure 7b is a partially enlarged schematic diagram of the main body structure provided in this embodiment of the invention. As shown in Figures 7a and 7b, this embodiment provides one multi-faceted prism structure, with any prism face on the multi-faceted prism structure being the first region A. There are three cylindrical structures, with the second regions on the three cylindrical structures being the first fiber optic region B1, the second fiber optic region B2, and the third fiber optic region B3, respectively. The first fiber optic region B1 and the second fiber optic region B2 are located near the two ports, respectively, and the third fiber optic region B3 is located between the first fiber optic region B1 and the second fiber optic region B2. Specifically, the region between the third fiber optic region B3 and the first fiber optic region B1 in this embodiment is the first region A, and the second fiber optic region B2 is connected to the third fiber optic region B3.

[0112] In this embodiment, all mounting devices are installed in the first region A to reduce the volume of the main structure 1 occupied by the first region A, thereby reducing the overall volume of the air-cooled laser provided in this embodiment, further reducing the volume and weight of the air-cooled laser provided in this embodiment, and thus further improving the portability of the air-cooled laser provided in this embodiment.

[0113] Optionally, the second region B provided in this embodiment may be provided with at least one combined structure 24. The combined structure 24 is used to place the optical fiber splice. The combined structure 24 may be composed of a threaded structure 241 and an arc structure 242. The threaded structure 241 may include an inner threaded structure and an outer threaded structure. Both the inner threaded structure and the outer threaded structure may include a first arc L1 and a second arc L2. The curvature of the first arc L1 is not less than the curvature of the second arc L2. The first arc L1 is located in the middle and has an outer diameter of not less than 500 mm, used to place the optical fiber splice. The second arc L2 is located on both sides of the first arc L1 and between the first arc L1 and the main arc of the main structure 1. The radius of the second arc L2 is not less than the minimum bending radius of the optical fiber, thereby facilitating the coiling of the optical fiber.

[0114] In some embodiments, the curvature of the first arc L1 can be 0, in which case the first arc L1 is a straight planar segment. Viewed from a cross-section perpendicular to the main axis of the main structure 1, both the inner and outer diameter threaded structures can include four arcs with various curvatures. The configurations of the arc structures and the threaded structures on the projection of the cross-section perpendicular to the main axis of the main structure 1 are identical, the difference being that the arc structures do not have the major and minor diameters of the thread. The curvature of the first arc in both the inner and outer diameter threaded structures can be set according to the actual application scenario, specifically based on the specifications of the optical fiber, and is not specifically limited here.

[0115] It should be noted that the fiber routing groove 27 provided in this embodiment can also be used for placing fiber optic fusion splices. Specifically, the area on the fiber routing groove 27 where the fiber optic fusion splice is placed can be located on any plane of the multifaceted prism structure, which is represented by a square groove (not shown in the figure) of a certain length set on the plane. The square groove is connected to the thread inlet or thread outlet of the adjacent threaded structure on the outer surface of the main structure 1 through the fiber routing groove 27. The geometric center of the fiber routing groove 27 can form a straight line or a curve. When the geometric center of the fiber routing groove 27 forms a curve, the transition arc radius of the curve is not less than the minimum bending radius of the wound optical fiber.

[0116] Specifically, the threaded inlet and threaded outlet of the threaded structure provided in this embodiment can extend to any plane of the multifaceted prism structure at both ends to form an area that can be connected to the fiber routing groove 27 for placing the optical fiber splice point.

[0117] It should be noted that the second fiber coil area B2 provided in this embodiment can also have a single-threaded structure. Similarly, in this embodiment, the fiber bundle of the first fiber coil area B1 and the third fiber coil area B3 is coupled to the single-threaded structure of the second fiber coil area B2 through the fiber coupler installed on the first area A, thereby meeting the fiber coiling requirements of the high-power laser.

[0118] Specifically, as shown in Figure 7b, each major and minor diameter of the thread in the second fiber zone B2 provided in this embodiment can also be provided with the aforementioned combination structure 24.

[0119] In some embodiments, please continue to refer to FIG7a. In this embodiment, the screw hole can be set on the outer surface of the main structure 1, and the step 22 can be set on the inner surface of the outer shell 2. Thus, the step 22 on the inner surface of the outer shell 2 can be used to cooperate and fix with the screw hole on the main structure 1, so as to achieve the purpose of fitting and installing the outer shell 2 around the main structure 1 to form an integral whole.

[0120] Meanwhile, the outer shell 2 provided in this embodiment can be a one-piece structure or a spliced ​​structure of multiple parts, as long as it can be fitted and installed around the main structure 1 to form a whole, no specific limitation is made here.

[0121] In this embodiment, please refer to Figures 8a-8b. Figures 8a and 8b are comparative schematic diagrams of air-cooled lasers provided in related technologies and air-cooled lasers provided in this embodiment. As shown in Figures 8a-8b, air-cooled lasers provided in related technologies (the devices on the left in Figures 8a and 8b) mainly place the optical fiber on the outer surface of the housing, while air-cooled lasers provided in this embodiment (the devices on the right in Figures 8a and 8b) mainly coil the optical fiber in the coiling area. Therefore, compared with air-cooled lasers in related technologies, air-cooled lasers provided in this embodiment are smaller in size and lighter in weight, effectively meeting the current requirements for laser use: lightweight miniaturization, portability, high reliability, no support, and wide temperature range operation.

[0122] In some embodiments, the channel between the two ports inside the main structure 1 provided in this embodiment can be composed of a rack and a support ring. The rack and the support ring are connected to each other to form the channel provided in this embodiment, as shown in FIG7a. Thus, by adopting the main structure 1 provided in this embodiment, not only can the heat dissipation efficiency of the air-cooled laser provided in this embodiment be effectively improved, but it can also ensure that the air-cooled laser provided in this embodiment has no obvious stress concentration points when subjected to external torque, and has excellent vibration resistance.

[0123] In some other embodiments, in order to further improve the heat dissipation efficiency of the air-cooled laser provided in this embodiment, please refer to Figure 9. Figure 9 is a schematic diagram of the port side of the main structure 1 provided in this embodiment. As shown in Figure 9, the channel between the two ports inside the main structure 1 provided in this embodiment can be composed of several divergent racks (1-2, 1-3, 1-4) and a support ring 1-1.

[0124] In this embodiment, the rack provided may include a bifurcated support rack 1-3 and a non-bifurcated support rack 1-2; one end of the bifurcated support rack 1-3 and the non-bifurcated support rack 1-2 are respectively fixedly connected to the outer wall of the support ring 1-1, and the other end is respectively fixedly connected to the inner wall of the main structure 1.

[0125] In addition, in order to further improve the heat dissipation efficiency of the air-cooled laser provided in this embodiment, the rack provided in this embodiment may also include short teeth 1-4. The short teeth 1-4 can share more of the heat of the air-cooled laser provided in this embodiment, and facilitate heat dissipation by using the channel formed by the short teeth 1-4, thereby further improving the heat dissipation effect in the internal channel of the air-cooled laser.

[0126] Optionally, the rack provided in this embodiment may also include a strip rack, which is arranged in an array inside the channel and is evenly distributed on the inner wall of each of the faces of the polyhedral prism structure, and is fixedly connected to the outer wall of the support ring, as shown in the channel structure of the air-cooled laser in Figures 10a and 10b.

[0127] Similarly, in order to further improve the heat dissipation efficiency of the air-cooled laser provided in this embodiment, the material of the main structure 1 provided in this embodiment can be a thermally conductive metal, specifically a metal with a high thermal conductivity, such as aluminum alloy.

[0128] In some embodiments, please continue to refer to Figure 9. The main structure 1 provided in this embodiment may also include an inwardly protruding boss 1-5. The boss 1-5 is used to ensure the effective depth of the mounting hole when the device is installed on the outer surface of the main structure 1.

[0129] Optionally, the main structure 1 provided in this embodiment can be manufactured by techniques such as die casting and welding connection, die casting and threaded connection, die casting, and additive manufacturing (3D printing). As long as the main structure 1 provided in this embodiment can be obtained, no specific limitation is made on the manufacturing method of the main structure 1.

[0130] Thus, the rack and support ring 1-1 provided in this embodiment can not only dissipate heat but also provide support, while improving the overall vibration and shock resistance of the air-cooled laser provided in this embodiment. Specifically, please refer to Figures 10a-10c. Figures 10a and 10b are simulation diagrams of the shock resistance of the air-cooled laser provided in this embodiment under external torque, and Figure 10c is a simulation diagram of the shock resistance of the air-cooled laser provided in related technologies under external torque. As can be seen from Figures 10a-10c, compared with the air-cooled lasers provided in related technologies, the air-cooled laser provided in this embodiment does not have obvious stress concentration points when subjected to external torque, and has excellent vibration resistance. At the same time, the fundamental frequency of the air-cooled laser provided in this embodiment is more than 10 times that of the air-cooled lasers provided in related technologies, so the air-cooled laser provided in this embodiment is less likely to resonate in low-frequency environments.

[0131] In this embodiment of the invention, please refer to Figures 1, 5 and 11 simultaneously. Figure 11 is a schematic diagram of the air outlet port side of the assembled air-cooled laser provided in this embodiment of the invention. As shown in Figures 1, 5 and 11, the air-cooled laser provided in this embodiment may also include a light output button 18, a power button 19, a power socket 20, an adapter bracket 12, a mounting pad 13, and an end cap 15.

[0132] In this embodiment, the main control board 6 and the power supply 5 can be evenly installed on the first region A of the main structure 1. One end of the main control board 6 is connected to the power supply 5, and the other end is connected to the air-cooling component 14 and the pump source 4 respectively, so as to realize the overall control of the air-cooled laser.

[0133] As shown in Figure 1, the adapter bracket 12 provided in this embodiment is installed at two opposite ports of the main structure 1 to connect to the ports of the air-cooled laser, respectively. The adapter bracket 12 provided in this embodiment can be a hollow annulus to avoid airflow formed by the channels inside the air-cooled laser.

[0134] The adapter bracket 12 is provided with mounting holes, and the air-cooling component 14 is installed on the adapter bracket 12 through the mounting holes to blow air into the channel inside the air-cooled laser, thereby forming an air duct inside the air-cooled laser to dissipate heat from the air-cooled laser.

[0135] Optionally, the mounting pad 13 may be provided between the adapter bracket 12 and the air-cooling components (14, 16) to reinforce the installation of the air-cooling components (14, 16). The shape of the mounting pad 13 may be the same as the shape of the adapter bracket 12.

[0136] The cross-sectional shape of the end caps (15, 17) is the same as the cross-sectional shape at the port of the main structure 1. The end caps (15, 17) provided in this embodiment are also provided with through holes to avoid the air duct, through holes to avoid the output optical cable head 3, and through holes for integrated assembly with the outer shell 2.

[0137] As shown in Figure 11, the light-emitting button 18, the power-on button 19, and the power socket 20 provided in this embodiment are all distributed and installed on the surface of the end cover 17 at the air outlet of the air-cooled laser. The light-emitting button 18 is connected to the main control board 6 to control the main control board 6 to drive the air-cooled laser to emit light. The power-on button 19 is connected to the power supply 5 to control the on / off of the circuit between the power supply 5 and the main control board 6. The power socket 20 is connected to the power supply 5. Meanwhile, the installation positions of the light-emitting button 18, the power-on button 19, and the power socket 20 must also avoid the airflow duct to prevent interference between structural components, thereby improving the reliability of the air-cooled laser provided in this embodiment.

[0138] As an optional embodiment, please refer to Figure 12, which is a schematic diagram of an application scenario of the air-cooled laser provided in this embodiment of the invention. After the air-cooled laser provided in this embodiment is fully assembled, the second protruding structure 23 of the air-cooled laser can be removed, and the output optical cable head 3 can be taken out to connect to a welding gun for use, thereby completing the welding work. Specifically, the output optical cable head 3 provided in this embodiment can also be integrated with other processing head components to meet different working requirements.

[0139] As another optional embodiment, please refer to Figure 13. Figure 13 is a schematic diagram of another application scenario of the air-cooled laser provided in this embodiment. After the air-cooled laser provided in this embodiment is fully assembled, multiple assembled air-cooled lasers can be integrated to meet the high power working requirements. The specific integration method can be referred to Figure 13, but is not limited to the method shown in Figure 13. It can also be integrated with other lasers at the same time. The specific integration method is not specifically limited here.

[0140] This concludes the detailed description of the air-cooled laser provided in this embodiment.

[0141] In summary, this invention provides an air-cooled laser, comprising: a main structure, an air-cooling component, and a mounting device installed on the outer surface of the main structure. The mounting device includes one or more of a pump source, an optical fiber coupler, a main control board, and a power supply. The main structure is cylindrical and includes two opposing ports. The interior of the main structure has several interconnected channels between the two ports. The air-cooling component is installed at each of the two ports to utilize the channels as air ducts for heat dissipation from the main structure. The main structure is composed of at least one multifaceted prism structure and at least one cylindrical structure. The multifaceted prism structure and the cylindrical structure share the channels. The cylindrical structure includes an integral structure with a fixed outer diameter and multiple spliced ​​structures with different outer diameters that are fixedly connected to each other and simultaneously share the channels. The multifaceted prism structure includes multiple cylindrical faces. Any one of the cylindrical faces of the multifaceted prism structure is a first region, and the outer surface of the cylindrical structure is a second region. The first region is used to install the mounting device, and the second region is used to coil optical fibers.

[0142] The air-cooled laser provided in this embodiment of the invention can achieve the following technical effects:

[0143] By installing the pump source and power supply in the first region of the outer surface of the main structure and winding the optical fiber in the second region, the overall size of the laser can be effectively reduced. Simultaneously, a connected air duct is formed inside the main structure, and air-cooling components are installed at opposite ends of the duct. Compared to traditional air-cooled lasers that only utilize two sides of the air duct for heat dissipation, this embodiment utilizes the air duct to dissipate heat from multiple evenly distributed surfaces of the devices installed on the outer surface of the main structure, effectively improving the laser's heat dissipation efficiency. Furthermore, the divergent rack provided in this embodiment serves both heat dissipation and mechanical support, resulting in excellent vibration and shock resistance for the entire air-cooled laser.

[0144] Some embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0145] The above are merely specific embodiments of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An air-cooled laser characterized by, The air-cooled laser device comprises: a main body structure, an air-cooling assembly, and a mounting device mounted on the outer surface of the main body structure, the mounting device comprising one or more of a pump source, a fiber coupler, a main control board, and a power supply; the main body structure is cylindrical, the main body structure comprises two opposite ports, and the interior of the main body structure has a plurality of channels communicating between the two ports, and the air-cooling assembly is respectively mounted at the two ports to use the channels as air ducts to dissipate heat from the main body structure; the main body structure is composed of at least one polygonal prism structure and at least one cylindrical structure, the polygonal prism structure and the cylindrical structure share the channels, the cylindrical structure comprises an integral structure with a fixed outer diameter and a plurality of spliced structures with different outer diameters and fixedly connected to each other and sharing the channels; the polygonal prism structure comprises a plurality of cylindrical surfaces, any one of the cylindrical surfaces of the polygonal prism structure is a first region, and the outer surface of the cylindrical structure is a second region, the first region is used for mounting the mounting device, and the second region is used for coiling optical fibers.

2. The air-cooled laser of claim 1, wherein, The ports comprise an air inlet port and an air outlet port, and the air-cooled laser device further comprises an output optical cable head connected to the output end of the optical fiber, the output optical cable head being mounted on the outer surface of the air inlet port.

3. The air-cooled laser of claim 2, wherein, The air-cooled laser device further comprises a shell connected to the outside of the main body structure through a stepped hole or a threaded hole provided on the main body structure.

4. The air-cooled laser of claim 3, wherein, The shell comprises a one-piece shell and a multi-piece shell; the cross section of the one-piece shell is circular or square, and the one-piece shell is used for sleeving the outside of the main body structure to connect with the outside of the main body structure; the multi-piece shell comprises a plurality of circular arc rings, and connecting flanges are arranged between the circular arc rings, the multi-piece shell is used for mounting on the outside of the main body structure, and the connecting flanges are used for connecting adjacent circular arc rings mounted on the outside of the main body structure.

5. The air-cooled laser of claim 3, wherein, The shell is provided with a handle, a first protruding structure, a second protruding structure, and a third protruding structure; the handle is connected to the shell through the first protruding structure, the second protruding structure is used for avoiding the output optical cable head, and the third protruding structure is used for avoiding the power supply.

6. The air-cooled laser of claim 3, wherein, The outer surface of the shell is provided with a limiting structure for winding an optical cable connected with the output optical cable head, and the limiting structure is used for winding the optical cable.

7. The air-cooled laser of claim 1, wherein, The number of cylindrical structures on the main body structure is three, the outer diameters of the three cylindrical structures are the same or different from each other, the second regions on the three cylindrical structures are a first fiber coiling region, a second fiber coiling region, and a third fiber coiling region respectively, and the second fiber coiling region is provided with a single-threaded structure; the fiber coupler is used for coupling the optical fibers in the first fiber coiling region and the third fiber coiling region to the single-threaded structure in the second fiber coiling region respectively.

8. The air-cooled laser of claim 7, wherein, The second region is provided with at least one combined structure for placing an optical fiber fusion splice, and the combined structure is composed of a threaded structure and an arc structure. The thread structure includes a thread inner diameter structure and a thread outer diameter structure, both of which include a first circular arc and a second circular arc, the circular arc curvature of the first circular arc is not less than that of the second circular arc; wherein the first circular arc is located in the middle, the outer diameter is not less than 500 mm, used for placing the optical fiber fusion point, the second circular arc is located on both sides of the first circular arc, and the second circular arc is located between the first circular arc and the main circular arc of the main body structure, the radius of the second circular arc is not less than the minimum bending radius of the optical fiber.

9. The air-cooled laser of claim 8, wherein, The circular arc curvature of the first circular arc is 0, and the first circular arc is a straight line.

10. The air-cooled laser of claim 8, wherein, At least one cylindrical surface of the multi-faceted prism structure is provided with a fiber running groove, which is connected with adjacent thread structures respectively, and the fiber running groove is used for fiber routing arrangement.

11. The air-cooled laser of claim 1, wherein, The cross-sectional outer diameter of the cylindrical structure is D, and the cross-sectional outer diameter of the multi-faceted prism structure is in the range of D~1.05D, wherein the cross-sectional outer diameter of the multi-faceted prism structure is determined by the envelope circle of the projection pattern of the structure on the cross section perpendicular to the main shaft of the main body structure. The projection of the multi-faceted prism structure on the cross section perpendicular to the main shaft of the main body structure includes a regular polygon and a non-regular polygon with unequal side lengths and uniform distribution around the shaft.

12. The air-cooled laser of claim 11, wherein, In the case where the projection of the multi-faceted prism structure on the cross section perpendicular to the main shaft of the main body structure is the regular polygon, the width of the pump source is I, and I is in the range of 0.6Dsin(π / n)~Dsin(π / n); The mounting device further includes a mode stripper, and the width of the fiber coupler, the mode stripper and the output cable head is in the range of 0.3Dsin(π / n)~Dsin(π / n), and n is the number of sides in the regular polygon.

13. The air-cooled laser of claim 11, wherein, In the case where the projection of the multi-faceted prism structure on the cross section perpendicular to the main shaft of the main body structure is the non-regular polygon, the width of the pump source is I, and I is in the range of 0.8Dsin(π / n)~1.2Dsin(π / n); The mounting device further includes a mode stripper, and the width of the fiber coupler, the mode stripper and the output cable head is in the range of 0.3Dsin(π / n)~0.8Dsin(π / n), and n is the number of sides in the non-regular polygon.

14. The air-cooled laser of claim 13, wherein, The mounting device is a cuboid structure, and the mounting device is installed on the cylindrical surface of the multi-faceted prism structure in a length direction parallel to the axial direction of the main body structure.

15. The air-cooled laser of claim 1, wherein, Further comprising a temperature sensor, the temperature sensor is arranged inside the main body structure, and the temperature sensor is used for collecting temperature data inside the main body structure; The main control board is connected with the temperature sensor and the air cooling component respectively, and is used for receiving the temperature data sent by the temperature sensor and adjusting the current working power of the air cooling component based on a preset cooling strategy and the temperature data, wherein the preset cooling strategy includes increasing the working power when the temperature data is greater than a target temperature threshold, and reducing the working power when the temperature data is not greater than the target temperature threshold.

16. The air-cooled laser of claim 1, wherein, The channel between the two ports in the interior of the main body structure is composed of several divergent racks and support rings; The racks include bifurcated support racks and non-bifurcated support racks; One end of the bifurcated support racks and the non-bifurcated support racks is fixedly connected with the outer wall of the support ring respectively, and the other end is fixedly connected with the inner wall of the main body structure respectively.

17. The air-cooled laser of claim 16, wherein, The racks include strip-shaped racks, which are arranged in an array distribution manner in the interior of the channel, and are uniformly distributed on the inner wall of each column surface of the polyhedral prism structure, and are fixedly connected with the outer wall of the support ring respectively.

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