A laser heat dissipation device and a laser

Abstract

The application provides a laser absorption device and a laser. The laser heat dissipation device comprises a bottom plate, a shell, a support, a cover plate, a water inlet, a water outlet, a water inlet groove and a water outlet groove. The shell and the support are arranged between the bottom plate and the cover plate, connect the bottom plate and the cover plate, the support is arranged in the center, and the shell is arranged on the outer side. A coiled optical fiber is arranged on the shell outer wall of the shell. The support is provided with a support top cover above the support. The water inlet and the water outlet are arranged above the support top cover. The support and the shell are provided with a cavity between the support and the shell. The water inlet groove and the water outlet groove are spirally embedded in the cavity. The upper ends of the water inlet groove and the water outlet groove are communicated with the water inlet and the water outlet respectively. The lower ends of the water inlet groove and the water outlet groove are communicated through a through pipe. The laser heat dissipation device has the advantages of simple structure design, ingenious structure, no need to occupy a large volume, effective utilization of cooling water to conduct heat away from the optical fiber, and strong adaptability.

Description

Technical Field

[0001] This application relates to the field of laser technology, and in particular to a laser heat dissipation device and a laser. Background Technology

[0002] Fiber lasers have advantages such as high electro-optical conversion efficiency, good heat dissipation, good beam quality, and high pulse energy and peak power, and are widely used in laser processing fields such as laser cutting, welding, marking, and cleaning.

[0003] Currently, the heat dissipation methods used in high-power fiber lasers include ordinary air cooling, water cooling plate cooling, heat sink conduction heat dissipation, and water cooling. However, air cooling, water cooling plate cooling, and heat sink conduction heat dissipation have significant power limitations and poor heat dissipation capabilities, making it difficult to meet the heat dissipation requirements of high-power fiber lasers.

[0004] Water cooling typically employs a fluid-driven conduction cooling system, usually requiring water channels. Existing laser cooling devices generally suffer from a problem: if the structure is simple and the device is small, the contact area between the coolant and the optical fiber during the cooling conduction process is insufficient, leading to inadequate heat dissipation. As the output power of fiber lasers further increases, this method struggles to quickly remove heat per unit length of fiber, resulting in excessively high heat power density and poor cooling performance. Other cooling devices that meet the required cooling capacity are generally large and cannot be easily installed inside high-power lasers.

[0005] With the continuous improvement of the output power level of high-power fiber lasers, heat dissipation has become a limiting factor restricting the further improvement of fiber laser output power. How to efficiently, quickly and conveniently remove the waste heat from the fiber, without making the heat dissipation device too complex or too large, has become an important research topic in the field of fiber lasers. Summary of the Invention

[0006] This application provides a laser heat dissipation device and a laser.

[0007] The laser heat dissipation device provided in this application includes: a base plate, a housing, a support column, a cover plate, a water inlet, a water outlet, a water inlet tank, and a water outlet tank. The housing and the support column are located between the base plate and the cover plate, connecting the base plate and the cover plate. The support column is located in the center, and the housing is located on the outer side. The outer wall of the housing is used to install coiled optical fibers. The support column has a support top cover, and the water inlet and water outlet are located on the support top cover. There is a cavity between the support column and the housing. The water inlet tank and the water outlet tank are spirally interlocked in the cavity. The upper ends of the water inlet tank and the water outlet tank are respectively connected to the water inlet and the water outlet, and the lower ends of the water inlet tank and the water outlet tank are connected by a pipe.

[0008] The laser heat dissipation device of this application uses liquid cooling to dissipate heat from the coiled optical fiber on the outer wall of the housing. Cooling water or coolant flows into the spiral inlet tank through the upper inlet. The cooling water or coolant flows spirally from top to bottom in the inlet tank until it reaches the through pipe, and then enters the outlet tank from the through pipe. From the bottom of the outlet tank, it flows spirally from bottom to top until it reaches the outlet tank. Because the inlet tank and outlet tank are spirally interlocked, the cooling water and coolant in the inlet tank and outlet tank have more contact time and more contact surface during the water inlet and outlet processes. This facilitates sufficient heat conduction between the cooling water and coolant in the inlet tank and outlet tank, which is beneficial for quickly dissipating heat from the optical fiber.

[0009] The laser heat dissipation device of this application has strong thermal conductivity and a simple, ingenious structural design. It does not require a large volume and can effectively utilize cooling water to conduct heat away from the optical fiber. Its smaller size reduces costs and increases product adaptability. Compared to other laser heat dissipation devices, it also saves water consumption while maintaining the same heat dissipation capacity, facilitating faster heat dissipation throughout the device.

[0010] This application also provides a laser, which can be a high-power laser, including a laser heat dissipation device and a laser main body structure. The laser heat dissipation device and the laser main body structure can be integrally connected to form the laser. Heat in the optical fiber of the high-power fiber laser is conducted away through water cooling or liquid cooling, thereby ensuring the normal operation of the laser. The laser heat dissipation device of this application can be placed on the outside of the laser. The heat is dissipated from the optical fiber of the laser through the integrated water cooling method of the laser heat dissipation device and the entire laser unit, thereby ensuring the normal operation of the laser. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0012] Figure 1 This is a first structural schematic diagram of the laser heat dissipation device of this application;

[0013] Figure 2 This is a partial structural schematic diagram of the laser heat dissipation device of this application;

[0014] Figure 3 This is a schematic diagram of the second structure of the laser heat dissipation device of this application.

[0015] Reference numerals: 11. Base plate; 12. Shell; 13. Cavity; 14. Support column; 15. Cover plate.

[0016] 16. Support top cover; 17. Inlet; 18. Outlet; 20. Connecting pipe; 27. Inlet trough; 28. Outlet trough; 121. Outer wall of the shell; 141. Outer wall of the support; 150. First threaded hole; 160. Second threaded hole. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] like Figure 1-2 As shown, Figure 1 This is a first structural schematic diagram of the laser heat dissipation device of this application. Figure 2 This is a partial structural schematic diagram of the laser heat dissipation device of this application. The laser heat dissipation device includes: a base plate 11, a housing 12, a support column 14, a cover plate 15, a water inlet 17, a water outlet 18, a water inlet tank 27, and a water outlet tank 28. The housing 12 and the support column 14 are located between the base plate 11 and the cover plate 15, connecting the base plate 11 and the cover plate 15. The support column 14 is located in the center, and the housing 12 is located on the outer side. The outer wall 121 of the housing 12 is used to install coiled optical fibers. The support column 14 has a support column top cover 16, and the support column top cover 16 has a water inlet 17 and a water outlet 18. The support column 14 and the shell 12 have a cavity 13 between them. The water inlet trough 27 and the water outlet trough 28 are spirally interlocked in the cavity 13. The upper ends of the water inlet trough 27 and the water outlet 28 are respectively connected to the water inlet 17 and the water outlet 18. The lower ends of the water inlet trough 27 and the water outlet 28 are connected through the pipe 20.

[0019] The laser heat dissipation device of this application uses liquid cooling to dissipate heat from the coiled optical fiber on the outer wall 121 of the housing. Cooling water or coolant flows into the spiral water inlet 27 through the upper inlet 17. The cooling water or coolant flows spirally from top to bottom in the water inlet 27 until it reaches the through pipe 20, and then enters the water outlet 28 from the through pipe 20. From the lower end of the water outlet 28, it flows spirally from bottom to top until it reaches the water outlet 28. Since the water inlet 27 and the water outlet 28 are spirally interlocked, the cooling water and coolant in the water inlet 27 and the water outlet 28 have more contact time and more contact surface during the water inlet and outlet processes. This makes it easier to achieve sufficient heat conduction between the cooling water and coolant in the water inlet 27 and the water outlet 28, which is beneficial for dissipating heat from the optical fiber as quickly as possible.

[0020] like Figure 3 As shown, Figure 3 This is a second structural schematic diagram of the laser heat dissipation device of this application. The cover plate 15 is provided with a first threaded hole 150, and the support top cover 16 is provided with a second threaded hole 160. Sealing rings (not shown in the figure) can be provided on the first threaded hole 150 and the second threaded hole 160 to seal the device, which can improve the airtightness of the laser heat dissipation device, prevent the conduction medium from overflowing, and also ensure the stability of heat conduction.

[0021] like Figure 3 As shown, the outer wall 121 of the housing 12 is provided with a spiral groove, and a coiled optical fiber is arranged in the spiral groove, which can facilitate the coiling and winding of the optical fiber.

[0022] In a preferred embodiment, the cavity 13 formed between the support column 14 and the shell 12 is an annular cavity 13, which makes it easier to install the spirally coiled water inlet trough 27 and water outlet trough 28.

[0023] In a preferred embodiment, the inlet trough 27 and the outlet trough 28 can be fixed to the outer wall 141 of the support column 14, but not to the inner wall of the housing 12. This is because it is troublesome to manufacture the spiral inlet trough 27 and the outlet trough 28 if they are fixed to the inner wall of the housing 12, and it is difficult to guarantee the manufacturing quality. However, it is simpler to manufacture them if they are fixed to the outer wall 141 of the support column 14, as this will result in lower manufacturing costs and lower quality.

[0024] In a preferred embodiment, both the inlet trough 27 and the outlet trough 28 are composed of two spirally coiled blades, with the inlet trough 27 or the outlet trough 28 located between the two spiral blades.

[0025] In the alternative scheme, the adjacent inlet tank 27 and outlet tank 28 share a common spiral blade, which can better facilitate the heat conduction of cooling water or coolant in the inlet tank 27 or outlet tank 28.

[0026] In an optional configuration, the water inlet trough 27 and the water outlet trough 28 can be manufactured separately, meaning that the water inlet trough 27 and the water outlet trough 28 can be separated from the housing 12 and the support column 14.

[0027] In a more preferred embodiment, a motor may be provided in the support column 14 to drive the entire device to rotate, further driving the cooling water or coolant in the inlet tank 27 and outlet tank 28 to be in a spiral motion state from the laser heat dissipation device.

[0028] The laser heat dissipation device of this application has an inlet 17 and an outlet 18, which are connected to a water chiller for use, so as to achieve heat dissipation of the entire laser heat dissipation device.

[0029] Compared with other water inlet and outlet methods, the water inlet and outlet method of the laser heat dissipation device of this application has an ingenious and simple structural design. It can more effectively utilize cooling water to conduct heat away from the optical fiber, save water consumption under the same heat dissipation capacity, and facilitate faster heat dissipation of the entire laser heat dissipation device.

[0030] This application also provides a laser, which can be a high-power laser, including the aforementioned laser heat dissipation device and laser main body structure. The laser heat dissipation device can be installed on the outside of the laser main body structure. The laser heat dissipation device and the laser main body structure are integrally connected to form various types of lasers such as high-power lasers.

[0031] It should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Positional relational terms such as "up," "down," "left," "right," "front," "back," "inner," and "outer" are used to facilitate the reader's understanding of the orientation of the product structure, and do not necessarily require the product structure to actually be in that direction. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, thereby including elements inherent in a process, method, article, or device that includes a list of elements. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or device that includes said element. Additionally, the parts of the technical solutions provided in the embodiments of this application that are consistent with the implementation principles of corresponding technical solutions in the prior art have not been described in detail to avoid excessive elaboration.

[0032] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made to this application without departing from the principles of this application, and the various embodiments in this application can be combined. These improvements, modifications, and combinations also fall within the protection scope of the claims of this application. That is, the claims of this application can arbitrarily combine the embodiments of this application, and are not limited to the limited combinations of embodiments passed by this application.

Claims

1. A laser heat dissipation device, characterized in that, include: The system comprises a base plate (11), a housing (12), a support column (14), a cover plate (15), an inlet (17), an outlet (18), an inlet trough (27), and an outlet trough (28). The housing (12) and the support column (14) are located between the base plate (11) and the cover plate (15), connecting the base plate (11) and the cover plate (15). The support column (14) is located in the center, and the housing (12) is located on the outer side. The outer wall of the housing (12) is used to install coiled optical fibers. The support column (14) has a support top. The cover (16) and the support top cover (16) are provided with an inlet (17) and an outlet (18). The support (14) and the shell (12) have a cavity (13). The inlet trough (27) and the outlet trough (28) are spirally interlocked in the cavity (13). The upper ends of the inlet trough (27) and the outlet trough (28) are respectively connected to the inlet (17) and the outlet (18). The lower ends of the inlet trough (27) and the outlet trough (28) are connected through a pipe (20). A motor is provided in the support column (14) to drive the entire device to rotate, thereby driving the cooling water or coolant in the inlet tank (27) and outlet tank (28) to be in a spiral motion state from the laser heat dissipation device; The inlet tank (27) and outlet tank (28) are both composed of two spirally coiled blades; adjacent inlet tanks (27) and outlet tanks (28) share a single spiral blade.

2. The laser heat dissipation device as described in claim 1, characterized in that, The cover plate (15) is provided with a first threaded hole (150), and the support top cover (16) is provided with a second threaded hole (160). Sealing rings are provided on the first threaded hole (150) and the second threaded hole (160).

3. The laser heat dissipation device as described in claim 1, characterized in that, The outer wall (121) of the housing (12) is provided with a spiral groove, and a coiled optical fiber is arranged in the spiral groove.

4. The laser heat dissipation device as described in claim 1, characterized in that, The cavity (13) formed between the support (14) and the shell (12) is an annular cavity.

5. The laser heat dissipation device as described in claim 4, characterized in that, The inlet tank (27) and outlet tank (28) are fixed or detachable on the outer wall (141) of the support column (14), but not fixed on the inner wall of the shell (12).

6. The laser heat dissipation device as described in claim 1, characterized in that, The inlet (17) and outlet (18) are connected to the water chiller, one for inlet and one for outlet.

7. A laser, characterized in that, It includes the laser heat dissipation device and the laser main body structure as described in any one of claims 1-6, wherein the laser heat dissipation device is installed on the outside of the laser main body structure.

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