Optical fiber heat dissipation device and optical fiber laser

Abstract

The utility model provides an optical fiber heat dissipation device and an optical fiber laser, the optical fiber laser comprises an optical fiber and the optical fiber heat dissipation device, the optical fiber heat dissipation device comprises a heat dissipation box, the heat dissipation box is provided with a mounting cavity and a heat dissipation cavity which are arranged in a spaced mode in the first direction, and the mounting cavity penetrates through the two opposite end faces of the heat dissipation box in the second direction; the optical fiber penetrates through the mounting cavity along a second direction, and the heat dissipation cavity is used for filling a heat dissipation medium; the first direction and the second direction form an included angle. According to the optical fiber laser, the heat generated by the optical fiber is conducted out through the heat dissipation medium, the heat dissipation effect on the optical fiber is improved, the use performance of the optical fiber laser is improved, and the performance stability of the optical fiber laser is guaranteed.

Description

Technical Field

[0001] This application belongs to the field of fiber optic technology, and more specifically, relates to a fiber optic heat dissipation device and a fiber laser. Background Technology

[0002] Fiber lasers are widely used in material surface processing, metal cutting / welding, and other fields due to their advantages such as maintenance-free operation, low power consumption, and high beam quality. Currently, the single-fiber power of fiber lasers is increasing, making fiber heat dissipation a major challenge. However, current fiber lasers have relatively low heat dissipation efficiency, resulting in limited performance and a higher risk of instability. Utility Model Content

[0003] The purpose of this application is to provide an optical fiber heat dissipation device and an optical fiber laser to solve the technical problem of low heat dissipation efficiency of optical fiber lasers in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a fiber optic heat dissipation device is provided, including a heat dissipation box. The heat dissipation box has an installation cavity and a heat dissipation cavity spaced apart along a first direction. The installation cavity penetrates the opposite end faces of the heat dissipation box along a second direction. An optical fiber passes through the installation cavity along the second direction. The heat dissipation cavity is used to fill a heat dissipation medium. The first direction and the second direction form an angle with each other.

[0005] In some embodiments, a first support plate and a second support plate are respectively attached to the inner walls of both sides of the mounting cavity along the first direction, and the first support plate and the second support plate are used to support and limit the optical fiber respectively; wherein, the first direction and the second direction are perpendicular to each other.

[0006] In some embodiments, the first support plate is attached to the inner wall of the mounting cavity near the heat dissipation cavity; the heat dissipation box has a limiting groove communicating with the mounting cavity, and the limiting groove is used to limit the second support plate along the first direction.

[0007] In some embodiments, the fiber optic heat dissipation device further includes a support tube, which passes through the mounting cavity along the second direction, and the opposite ends of the support tube are respectively supported by the heat dissipation box, and the optical fiber passes through the support tube.

[0008] In some embodiments, the heat sink is equipped with two connectors that communicate with the heat sink cavity, and the two connectors are used to connect to an external circulation pump to realize the circulation of the heat dissipation medium.

[0009] In some embodiments, the heat sink box further has at least two through holes that communicate with the heat sink cavity, and plugs are installed at the through holes.

[0010] In some embodiments, the outer wall of the heat sink is formed with spaced heat sink fins.

[0011] In some embodiments, the heat sink is formed on at least two opposite outer walls along a third direction; the heat sink extends along the first direction and covers the mounting cavity and the heat dissipation cavity along the third direction; the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In some embodiments, the heat dissipation box includes a box body and a cover plate, the cover plate and the box body covering each other to jointly enclose and form the mounting cavity, the heat dissipation cavity being formed in the box body.

[0013] On the other hand, this application also provides a fiber laser, including an optical fiber and the aforementioned fiber heat dissipation device.

[0014] The beneficial effects of the fiber optic heat dissipation device and fiber laser provided in this application are as follows: By forming an mounting cavity and a heat dissipation cavity in the heat dissipation box, with the heat dissipation cavity filled with a heat dissipation medium and the mounting cavity for the fiber optic cable to pass through, when the fiber optic cable generates a large amount of heat due to operation, the heat can be transferred to the heat dissipation medium through the sidewall between the mounting cavity and the heat dissipation cavity, and then conducted away through the heat dissipation medium and the outer sidewall of the heat dissipation box. This improves the heat dissipation effect on the fiber optic cable, enhances the performance of the fiber laser, and ensures the performance stability of the fiber laser. Furthermore, by separating the mounting cavity and the heat dissipation cavity, the influence of the heat dissipation medium on the fiber optic cable can be reduced, and the need for a sealing design of the fiber optic cable due to the simultaneous presence of the fiber optic cable and the heat dissipation medium in the same cavity can also be reduced. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, 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.

[0016] Figure 1 A first-angle perspective view of the fiber optic heat dissipation device provided in an embodiment of this application;

[0017] Figure 2 A second-angle perspective view of the fiber optic heat dissipation device provided in an embodiment of this application;

[0018] Figure 3 A cross-sectional view of the fiber optic heat dissipation device provided in the embodiments of this application, perpendicular to a third direction;

[0019] Figure 4A cross-sectional view of the fiber optic heat dissipation device provided in an embodiment of this application, perpendicular to the first direction;

[0020] Figure 5 This is a three-dimensional structural diagram of the housing in the fiber optic heat dissipation device provided in an embodiment of this application.

[0021] The following are the labeling elements in the figure:

[0022] 100. Heat sink box; 110. Box body; 112. Step; 113. First through hole; 114. Second through hole; 115. Heat sink fin; 116. Groove; 117. Circulation inlet; 118. Circulation outlet; 120. Cover plate; 130. Mounting cavity; 140. Heat dissipation cavity; 150. Limiting groove; 160. First side; 170. Second side; 180. Third side; 200. First support plate; 300. Second support plate; 400. Connector; 500. First plug; 600. Second plug; X, Second direction; Y, First direction; Z, Third direction. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0026] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Please see Figures 1 to 3 The fiber optic heat dissipation device provided in the embodiments of this application will now be described. This fiber optic heat dissipation device is mainly used to dissipate heat from the optical fiber in a fiber laser to ensure the performance of the fiber laser. Specifically, it can be applied to fiber laser components such as combiners, mode strippers, mode matchers, gratings, and couplers.

[0028] The fiber optic heat dissipation device includes a heat dissipation box 100, which has a mounting cavity 130 and a heat dissipation cavity 140. The mounting cavity 130 and the heat dissipation cavity 140 are spaced apart along a first direction Y. The mounting cavity 130 passes through the opposite end faces of the heat dissipation box 100 along a second direction X. The optical fiber passes through the mounting cavity 130 along the second direction X. The heat dissipation cavity 140 is used to fill the heat dissipation medium. The first direction Y and the second direction X form an angle with each other.

[0029] The heat dissipation medium can be a heat dissipation liquid, such as water or heat dissipation oil, or it can be a gel. Heat transfer is achieved by filling the heat dissipation cavity 140 with gel.

[0030] The first direction Y and the second direction X are preferably perpendicular to each other. Of course, in other embodiments, the first direction Y and the second direction X can also be 60 degrees, 70 degrees, 80 degrees, 90 degrees, 100 degrees, 110 degrees or 120 degrees to each other.

[0031] The fiber optic heat dissipation device in this embodiment forms an mounting cavity 130 and a heat dissipation cavity 140 within the heat dissipation box 100. The heat dissipation cavity 140 is filled with a heat dissipation medium, and the mounting cavity 130 is for the fiber optic cable to pass through. When the fiber optic cable generates a large amount of heat during operation, the heat can be transferred to the heat dissipation medium via the sidewall between the mounting cavity 130 and the heat dissipation cavity 140, and then conducted away through the heat dissipation medium and the outer sidewall of the heat dissipation box 100. This improves the heat dissipation effect on the fiber optic cable, enhances the performance of the fiber laser, and ensures the performance stability of the fiber laser. Furthermore, by separating the mounting cavity 130 and the heat dissipation cavity 140, the influence of the heat dissipation medium on the fiber optic cable can be reduced, and the need for a sealing design of the fiber optic cable due to the simultaneous presence of the fiber optic cable and the heat dissipation medium in the same cavity can also be reduced.

[0032] In some embodiments, please refer to Figure 3A first support plate 200 and a second support plate 300 are respectively attached to the inner walls of the mounting cavity 130 along the first direction Y. The first support plate 200 and the second support plate 300 are used to support and limit the optical fiber, wherein the first direction Y and the second direction X are perpendicular to each other. In this embodiment, the first support plate 200 and the second support plate 300 not only support the optical fiber, but also transfer the heat generated by the optical fiber to the side wall of the heat dissipation box 100 through the first support plate 200 and the second support plate 300. In addition, by separating the first support plate 200 and the second support plate 300, the size of the first support plate 200 and / or the second support plate 300 along the first direction Y is adjustable. That is, the first support plate 200 and / or the second support plate 300 can be set with different thicknesses according to the optical fiber with different thicknesses, so as to improve the application range of the optical fiber heat dissipation device.

[0033] Optionally, both the first support plate 200 and the second support plate 300 are glass plates. Glass plates have a low coefficient of thermal expansion and contraction. When the heat of the optical fiber is high, the first support plate 200 and the second support plate 300 can support and limit the glass to ensure the structural stability of the optical fiber and prevent the optical fiber from deforming.

[0034] In some embodiments, please refer to Figure 3 The first support plate 200 is attached to the inner wall of the mounting cavity 130 near the heat dissipation cavity 140, so that the heat of the optical fiber can be conducted to the heat dissipation cavity 140 through the first support plate 200.

[0035] In some embodiments, the first support plate 200 is adhered to the inner wall of the mounting cavity 130 near the heat dissipation cavity 140. This adhesive method not only ensures the secure assembly of the first support plate 200 but also simplifies its installation structure. Furthermore, since the side of the first support plate 200 facing away from the second support plate 300 is adhered to the side wall of the mounting cavity 130, there is no structural restriction on the side facing the second support plate 300. This allows the thickness of the first support plate 200 along the first direction Y to be adjustable, enabling the user to select different thicknesses of the first support plate 200 according to actual needs. It is understood that in other embodiments of this application, a structure can also be provided within the mounting cavity 130 to limit the position of the first support plate 200; this is not the only possible method.

[0036] In some embodiments, please refer to Figure 3 The heat sink 100 has a limiting groove 150 that communicates with the mounting cavity 130. The limiting groove 150 is used to limit the second support plate 300 along the first direction Y. The limiting groove 150 can limit the second support plate 300 and ensure the installation stability of the second support plate 300 in the mounting cavity 130.

[0037] Optionally, two limiting grooves 150 are formed within the mounting cavity 130. The limiting grooves 150 penetrate the opposite sides of the heat sink 100 along the second direction X. The two limiting grooves 150 are spaced apart along the third direction Z. During assembly, the opposite sides of the second support plate 300 along the third direction Z are respectively confined within the two limiting grooves 150, thereby limiting the second support plate 300. The first direction Y, the second direction X, and the third direction Z are mutually perpendicular. It is understood that in other embodiments of this application, the limiting grooves 150 may not penetrate the opposite sides of the heat sink 100 along the second direction X, and the two limiting grooves 150 may be spaced apart along the second direction X to respectively limit the opposite ends of the second support plate 300 along the second direction X. This is not a unique limitation.

[0038] In some embodiments, please refer to Figures 1 to 3 The heat dissipation box 100 includes a box body 110 and a cover plate 120. The cover plate 120 and the box body 110 cover each other to jointly enclose and form an installation cavity 130. A heat dissipation cavity 140 is formed in the box body 110. In this embodiment, the installation cavity 130 is formed by the box body 110 and the cover plate 120, which facilitates the assembly of the first support plate 200 and the second support plate 300. It is understood that in other embodiments of this application, when the first support plate 200 and the second support plate 300 are easy to disassemble and assemble in the heat dissipation box 100, the box body 110 and the cover plate 120 can also be integrally connected. This is not a unique limitation.

[0039] In some embodiments, please refer to Figure 3 and Figure 5 The box body 110 has a step 112, and a cover plate 120 is placed on the side of the box body 110 with the step 112. The cover plate 120 and the box body 110 together form the aforementioned mounting cavity 130 and limiting groove 150. During assembly, the first support plate 200 is first attached to the bottom side wall of the mounting cavity 130, and then the second support plate 300 is supported on the step 112. Finally, the cover plate 120 is placed on the box body 110 and covers the second support plate 300, and is locked with fasteners. Alternatively, to improve the assembly reliability of the second support plate 300, the second support plate 300 can be attached to the step 112 first, and then the cover plate 120 can be assembled.

[0040] In some embodiments, please refer to Figure 1 and Figure 4 The heat sink 100 is equipped with two connectors 400 that are respectively connected to the heat sink cavity 140. The two connectors 400 are used to connect to an external circulation pump to realize the circulation of the heat dissipation medium.

[0041] For details, please refer to Figure 5The heat sink 100 has a circulation inlet 117 and a circulation outlet 118, which are respectively connected to the heat sink cavity 140. Two connectors 400 are respectively installed at the circulation inlet 117 and the circulation outlet 118.

[0042] When in use, first connect the circulation pump to the two connectors 400 respectively, start the circulation pump so that the heat dissipation medium enters the heat dissipation chamber 140 from the circulation inlet 117 and flows out from the circulation outlet 118, repeating the cycle, thereby quickly removing the heat in the heat dissipation box 100.

[0043] In some embodiments, please refer to Figure 1 , Figure 4 and Figure 5 Two connectors 400 are positioned near the opposite ends of the heat sink 100 along the second direction X, so that the heat dissipation medium in the heat sink cavity 140 can flow from one end of the heat sink cavity 140 along the second direction X to the other end, so as to carry away the heat of the optical fiber passing through the heat sink 100 along the second direction X, and ensure uniform heat dissipation effect on the optical fiber.

[0044] Optionally, the two connectors 400 are respectively located on the same side of the heat sink 100 along the third direction Z, thereby facilitating the connection of the two connectors 400 to the circulation pump. Specifically, the heat sink 100 has a first side 160 and a second side 170 arranged opposite each other along the third direction Z, and the heat sink 100 also has a third side 180 away from the cover plate 120 along the first direction Y. The two connectors 400 can be located on the first side 160 or the second side 170; this application uses the first side 160 as an example for description. It can be understood that in other embodiments of this application, the two connectors 400 can also be located on the first side 160 and the second side 170 of the heat sink 100, or on the third side 180 of the heat sink 100, or on the third side 180 and the first side 160 of the heat sink 100, or on the third side 180 and the second side 170 of the heat sink 100.

[0045] In some embodiments, the heat sink 100 further has at least two through holes communicating with the heat sink cavity 140, and plugs are installed at the through holes. The provision of at least two through holes facilitates both the injection of heat dissipation medium into the heat sink cavity 140 and the flushing and cleaning of the heat sink cavity 140.

[0046] For some specific embodiments, please refer to Figures 3 to 5At least two through holes include two first through holes 113, which are respectively formed at opposite ends of the heat sink 100 along the second direction X. The two first through holes 113 are respectively connected to the heat sink cavity 140, and a first plug 500 is installed at each of the two first through holes 113. The arrangement of the first through holes 113 at both ends facilitates the thorough flushing of the heat sink cavity 140.

[0047] In some embodiments, please refer to Figure 2 and Figure 4 The at least two through holes also include two second through holes 114. The two second through holes 114 are respectively formed on one side of the heat sink 100 along the third direction Z. The two second through holes 114 are respectively located near the two first through holes 113, and two second plugs 600 are installed in each of the two second through holes 114. The two second through holes 114 and the two connectors 400 are respectively located on opposite sides of the heat sink 100 along the third direction Z, specifically, the two connectors 400 are located on the first side 160, and the two second through holes 114 are located on the second side 170. The arrangement of the two second through holes 114 facilitates the flushing fluid to flush the inner wall of the heat sink cavity 140 along the third direction Z, achieving a better flushing effect. It is understood that in other embodiments of this application, the number of through holes can be two, three, five, or more, depending on actual design requirements, and the position of the through holes can also be designed according to actual needs; no unique limitation is made here.

[0048] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 4 The outer wall of the heat sink 100 is provided with spaced heat sink fins 115. The combination of heat dissipation medium and heat sink fins 115 can further improve the heat dissipation effect of the fiber optic heat dissipation device.

[0049] For some specific embodiments, please refer to Figure 1 , Figure 2 and Figure 4 The heat sink 100 has heat sink 115 formed on at least two opposite outer walls along the third direction Z. By providing heat sink 115 on both opposite sides of the heat sink 100 along the third direction Z, the heat sink 115 provides heat dissipation for both the mounting cavity 130 and the heat dissipation cavity 140.

[0050] Optionally, the heat sink 115 extends along the first direction Y, and heat sinks 115 on the same side are spaced apart along the second direction X. The heat sink 115 covers the mounting cavity 130 and the heat dissipation cavity 140 along the third direction Z, with the first direction Y, the second direction X, and the third direction Z being mutually perpendicular. This arrangement allows heat in both the mounting cavity 130 and the heat dissipation cavity 140 to be quickly dissipated through the heat sink 115, thereby improving the heat dissipation effect.

[0051] Please see Figure 1 Corresponding to the first side 160, heat sinks 115 are evenly distributed between the two connectors 400. Please refer to [link / reference]. Figure 2 Corresponding to the second side 170, heat sinks 115 are evenly distributed between the two second through holes 114.

[0052] In some embodiments, please refer to Figure 1 and Figure 2 Corresponding to the first side 160 of the heat sink 100, a plurality of grooves 116 are formed on the outer side wall of the heat sink 100. The grooves 116 penetrate the third side 180 of the heat sink 100 and the first side 160 of the heat sink 100. A heat sink 115 is formed between the plurality of grooves 116. Corresponding to the second side 170 of the heat sink 100, a plurality of grooves 116 are formed on the outer side wall of the heat sink 100. The grooves 116 penetrate the third side 180 of the heat sink 100 and the second side 170 of the heat sink 100. A heat sink 115 is formed between the plurality of grooves 116. This application forms the heat sink 115 by forming grooves 116 on the outer side wall of the heat sink 100. The heat sink 115 increases the contact area between the heat sink 100 and the atmosphere, thereby improving the heat dissipation effect. It also makes the surface of the heat sink 100 flush, which is convenient for installation and transportation. It is understood that in other embodiments of this application, the heat sink 115 can also be formed by protruding a protrusion on the outer side wall of the heat sink 100, which is not the only limitation here.

[0053] In some other embodiments of this application, heat sinks 115 may also be provided on both sides of the heat sink 100 along the third direction Z and on the third side 180 of the heat sink 100.

[0054] In other embodiments of this application, the first support plate 200 and the second support plate 300 may not be separately provided in the mounting cavity 130. Specifically, the fiber optic heat dissipation device also includes a support tube, which passes through the mounting cavity 130 along the second direction X, and its opposite ends are respectively supported by the heat dissipation box 100, with the optical fiber passing through the support tube. The support tube is made of glass material, and the optical fiber is installed through the support tube during assembly. In this embodiment, the optical fiber is supported by an integrated support tube, resulting in a simple structure.

[0055] On the other hand, this application also provides a fiber laser, including an optical fiber and the aforementioned fiber heat dissipation device, with the optical fiber passing through the mounting cavity 130 of the fiber heat dissipation device. The fiber laser of this application, through the arrangement of the aforementioned fiber heat dissipation device, achieves better heat dissipation, thereby resulting in better and more stable performance.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fiber optic heat dissipation device, characterized in that, The device includes a heat sink, which has mounting cavities and heat dissipation cavities spaced apart along a first direction. The mounting cavities penetrate the opposite end faces of the heat sink along a second direction. An optical fiber passes through the mounting cavity along the second direction. The heat dissipation cavity is used to fill a heat dissipation medium. The first direction and the second direction form an angle with each other.

2. The fiber optic heat dissipation device as described in claim 1, characterized in that, The mounting cavity is provided with a first support plate and a second support plate on the inner walls of both sides along the first direction, respectively. The first support plate and the second support plate are used to support and limit the optical fiber, wherein the first direction and the second direction are perpendicular to each other.

3. The fiber optic heat dissipation device as described in claim 2, characterized in that, The first support plate is attached to the inner wall of the mounting cavity near the heat dissipation cavity; the heat dissipation box has a limiting groove communicating with the mounting cavity, and the limiting groove is used to limit the second support plate along the first direction.

4. The fiber optic heat dissipation device as described in claim 1, characterized in that, The fiber optic heat dissipation device further includes a support tube, which passes through the mounting cavity along the second direction, and the opposite ends of the support tube are respectively supported by the heat dissipation box, and the optical fiber passes through the support tube.

5. The fiber optic heat dissipation device according to any one of claims 1 to 4, characterized in that, The heat sink is equipped with two connectors that communicate with the heat sink cavity. The two connectors are used to connect to an external circulation pump to realize the circulation of the heat dissipation medium.

6. The fiber optic heat dissipation device according to any one of claims 1 to 4, characterized in that, The heat sink also has at least two through holes that communicate with the heat sink cavity, and plugs are installed at the through holes.

7. The fiber optic heat dissipation device as described in claim 1, characterized in that, The outer wall of the heat sink is formed with spaced heat sink fins.

8. The fiber optic heat dissipation device as described in claim 7, characterized in that, The heat sink box has heat sinks formed on at least two opposite outer walls along a third direction; the heat sinks extend along the first direction and cover the mounting cavity and the heat dissipation cavity along the third direction; the first direction, the second direction and the third direction are perpendicular to each other.

9. The fiber optic heat dissipation device according to any one of claims 1 to 4, characterized in that, The heat dissipation box includes a box body and a cover plate. The cover plate and the box body cover each other to jointly enclose and form the mounting cavity. The heat dissipation cavity is formed in the box body.

10. A fiber laser, characterized in that, Includes optical fiber and the optical fiber heat dissipation device as described in any one of claims 1 to 9.

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