Air-cooled fiber laser based on modular heat dissipation mode

Abstract

The invention discloses an air-cooled optical fiber laser based on a modular heat dissipation mode, which comprises a heat dissipation main body base and a laser pumping module, the heat dissipation main body base is of a hollow structure, the front end and the rear end of the heat dissipation main body base are both provided with a plurality of heat dissipation fins which are arranged at intervals, the rear end of the heat dissipation main body base is provided with a heat dissipation fan, and the heat dissipation fan is connected with the laser pumping module. One side face of the heat dissipation main body base is a high heat load face, the other side face of the heat dissipation main body base is a low heat load face, the high heat load face is used for installing a laser pumping module, the low heat load face is used for installing a laser optical cavity panel, and side sealing plates are installed on the top face and the bottom face of the heat dissipation main body base respectively. According to the invention, the modular arrangement is adopted, so that a plurality of modules can be assembled conveniently, flexible combination from low power to high power is realized, and the heat dissipation performance is improved.

Description

Technical Field

[0001] The invention relates to a laser, in particular to an air-cooled optical fiber laser based on a modular heat dissipation method. Background Art

[0002] Direct air-cooled fiber lasers have been rapidly developed in recent years because of their energy-saving, small size, light weight, and no need for additional cooling equipment such as water chillers. Current direct air-cooled lasers usually use high-efficiency radiators in order to pursue better heat dissipation capabilities;

[0003] The production of direct air-cooled lasers of different power levels requires the configuration of heat sinks of different sizes. The more laser models there are, the more heat sink models are needed. Since plans usually cannot keep up with changes, market demand changes rapidly: the production prepares a large number of X-type laser heat sinks according to the sales plan, but the market demand for Y-type lasers is greater, and X-type lasers are unsalable; on the one hand, there is a large backlog of X-type heat sinks in the warehouse, which occupies the funds of the production company, and on the other hand, the production company needs to spend a lot of money to process Y-type heat sinks. Considering the production cycle of Y-type heat sinks, the production company may lose customers during the long waiting process, making the product lose competitiveness; the more laser heat sink models there are, the higher the tangible and intangible costs such as R&D costs, manufacturing costs, logistics costs, and warehousing costs, which further limits the competitiveness of the product;

[0004] Some consumers are psychologically averse to the new direct air-cooled fiber laser, believing it is unreliable, easy to heat up, and difficult to use. Therefore, for these consumers, direct air-cooled fiber lasers can be manufactured in a hybrid heat dissipation manner (similar reports have been made in recent years); this allows consumers to eliminate their concerns and experience the compactness, lightness, and energy saving of direct air-cooled fiber laser equipment. However, previous solutions made it difficult to universally modify the heat sink, or the size was large. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an air-cooled fiber laser based on a modular heat dissipation method.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A wind-cooled fiber laser based on a modular heat dissipation method comprises a heat dissipation main body base and a laser pump module, wherein the heat dissipation main body base is a hollow structure, the front end and the rear end of the heat dissipation main body base are provided with a plurality of heat dissipation fins arranged at intervals, a heat dissipation fan is installed at the rear end of the heat dissipation main body base, one side surface of the heat dissipation main body base is a high heat load surface, and the other side surface of the heat dissipation main body base is a low heat load surface, the high heat load surface is used to install the laser pump module, and the low heat load surface is used to install the laser optical cavity panel, and the top surface and the bottom surface of the heat dissipation main body base are respectively installed with side sealing plates.

[0008] A heat-conducting material is filled between the low negative heat load surface and the laser optical cavity panel.

[0009] The heat sinks at the front and rear ends of the heat sink body base are both arc-shaped or V-shaped and are recessed toward the interior of the heat sink body base.

[0010] A liquid cooling module is arranged on one or both of the side sealing plates.

[0011] A heat pipe is installed in the heat dissipation body base, and the side of the heat pipe is in contact with the high heat load surface. At the same time, the heat pipe passes through the top and bottom surfaces of the heat dissipation body base and contacts the side sealing plate.

[0012] The heat conducting pipes are U-shaped and are provided in two rows, the upper row is arranged in a U shape, and the lower row is arranged in an inverted U shape.

[0013] When two heat dissipation body bases are provided, the heat dissipation body bases are stacked up and down, and two adjacent heat dissipation body bases are connected by connecting plates, and a laser optical cavity panel is used to simultaneously assemble the low heat load surface covering all the heat dissipation body bases.

[0014] The connecting plate is mounted on a high heat load surface of the heat dissipation body base.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] Modular setting, design a single heat sink base, and form a relatively fixed power laser pump. The heat sink base is a straight-through heat dissipation structure to improve the heat dissipation performance. When a high-power laser is needed, you only need to assemble multiple assembled heat sink bases up and down to form a high-power laser to meet the use of different occasions. No additional mold is required. You only need to replace a laser optical cavity panel, and there is no need to open the mold of the overall heat sink, which saves costs. At the same time, it is more flexible in use, reduces assembly difficulties, and meets the use requirements of low power to high power. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the decomposition structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the cutaway structure of the present invention;

[0019] Figure 3 It is a cross-sectional schematic diagram of implementation mode 1 of three lasers stacked and side sealing plates in the present invention;

[0020] Figure 4 It is a cross-sectional schematic diagram of the second embodiment of the present invention in which three lasers are stacked and a side sealing plate is provided;

[0021] Figure 5 It is a cross-sectional schematic diagram of implementation mode 1 of three lasers stacked and a side sealing plate in the present invention. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-2 As shown, an air-cooled fiber laser based on a modular heat dissipation method includes a heat dissipation main body base 1 and a laser pump module 2. The heat dissipation main body base 1 is a hollow structure. The front and rear ends of the heat dissipation main body base are provided with a plurality of heat dissipation fins 3 arranged at intervals. A heat dissipation fan 4 is installed at the rear end of the heat dissipation main body base 1. One side of the heat dissipation main body base 1 is a high heat load surface 5, and the other side of the heat dissipation main body base 1 is a low heat load surface 6. The high heat load surface 5 is used to install the laser pump module 2, and the low heat load surface 6 is used to install the laser optical cavity panel 7. The top and bottom surfaces of the heat dissipation main body base 1 are respectively installed with side sealing plates 8. The low negative heat load surface 6 and the laser optical cavity panel 7 are filled with heat conductive material. The heat dissipation fan sucks air, sucks the external air into the interior of the heat dissipation main body base, and then the air is cooled and discharged from the front end. The heat is dissipated through the heat dissipation fins, and the heat is conducted out from the outside, and a part of it is taken out by the wind. The front and rear hollow direct blowing heat dissipation improves the heat dissipation.

[0026] The heat sinks 3 at the front and rear ends of the heat dissipation main body base 1 are both arc-shaped or V-shaped, and are recessed toward the inside of the heat dissipation main body base, thereby increasing the heat dissipation area and further improving the heat dissipation performance.

[0027] A liquid cooling module 9 is arranged on one or both side sealing plates, and the liquid cooling module 9 can be a water cooling or other medium cooling method. An external circulation pipeline is connected to the liquid cooling module, and the heat dissipation is improved through the circulation of the medium, so that the heat can be better dissipated.

[0028] The liquid cooling module can be installed by welding or other methods.

[0029] A liquid cooling module 9 may be provided on only the side sealing plate 8 on the top surface or the side sealing plate 8 on the bottom surface of the heat dissipation main body base 1, or liquid cooling modules may be provided on both the side sealing plates on the top surface and the bottom surface.

[0030] In addition, a cavity can be directly formed inside the side sealing plate for conveying the medium to form an internal integrated liquid cooling structure.

[0031] In addition, in order to further improve the cooling performance, a heat pipe 10 can be installed in the heat dissipation body base 1, and the side of the heat pipe 10 is in contact with the high heat load surface 5, and the heat pipe passes through the top and bottom surfaces of the heat dissipation body base and contacts the side sealing plate. The heat pipe is an aluminum tube, a copper tube or other pipe material that is easy to conduct heat. Since it contacts the side sealing plate, it can quickly conduct the heat from the high heat load surface and then transfer it to the side sealing plate for dissipation.

[0032] The heat conducting pipe is U-shaped or spiral-shaped. If it is set to be U-shaped, it is provided with two rows, the upper row is arranged in a U shape, and the lower row is arranged in an inverted U shape. The heat conducting pipes in the upper row are in contact with the side sealing plate on the top surface of the heat dissipation body base, and the heat conducting pipes in the lower row are in contact with the side sealing plate on the bottom surface of the heat dissipation body base, so as to achieve rapid heat conduction.

[0033] Through the combination of the above multiple heat dissipation methods, the overall heat dissipation performance is ensured to meet the usage requirements.

[0034] In addition, the present invention facilitates the combined use of multiple lasers to form a high-power laser. Figure 3 As shown, when three lasers are arranged, three heat dissipation main body bases are stacked up and down, and are connected by connecting plates. In order not to affect the heat dissipation, the connecting plates are arranged on the high heat load surface.

[0035] When multiple lasers are used in combination, it is necessary to replace the laser optical cavity panel. According to the height of the stacked combination, a laser optical cavity panel of the corresponding size is selected. One laser optical cavity panel covers all the low heat load surfaces of the heat dissipation body base at the same time. Therefore, when multiple lasers are combined, it is not necessary to re-open the mold of the heat dissipation body base. Only one laser optical cavity panel needs to be replaced, and other module components do not need to be replaced. On the one hand, it can reduce manufacturing costs, and on the other hand, it is more flexible to use.

[0036] It can be a thin plate of heat-insulating material, such as an aluminum plate, to isolate each basic heat dissipation body base to avoid mutual thermal influence.

[0037] For a single heat dissipation main body base as a module, the power of the laser pump can be relatively fixed, for example, 100W, then this is the lowest power laser. When a 300W laser is needed, only three lasers need to be superimposed to achieve it, and there is no need to re-open the heat dissipation main body base. If the power of a single laser is 50W, then a smaller power application can be achieved, and when a higher power is required, only multiple lasers need to be superimposed to meet the needs.

[0038] refer to Figure 3 When three are stacked together, all side sealing plates are ordinary plates and no liquid cooling module is set. Figure 4 After the three are stacked, the top surface of the heat dissipation main body base at the top layer is provided with a side sealing plate with a liquid cooling module, and the bottom surface of the heat dissipation main body base at the bottom layer is provided with a liquid cooling module. Or refer to Figure 5 As shown, after the three are stacked, the side sealing plates on the top and bottom surfaces of each heat dissipation body base are provided with liquid cooling modules.

[0039] By utilizing the flexibility of combination, not only single-mode fiber lasers can be produced, but also multi-mode and variable spot fiber lasers can be produced; different powers and different active fiber diameters correspond to different optical cavity panels, and even the laser optical cavity panel can be a panel with at least two independent gain cavities to achieve multi-mode or variable spot output.

[0040] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air-cooled fiber laser based on a modular heat dissipation method, characterized in that: The invention comprises a heat dissipation main body base and a laser pumping module. The heat dissipation main body base is a hollow structure. The front end and the rear end of the heat dissipation main body base are provided with a plurality of heat dissipation fins arranged at intervals. The rear end of the heat dissipation main body base is provided with a heat dissipation fan. One side surface of the heat dissipation main body base is a high heat load surface, and the other side surface of the heat dissipation main body base is a low heat load surface. The high heat load surface is used for installing the laser pumping module, and the low heat load surface is used for installing the laser optical cavity panel. The top surface and the bottom surface of the heat dissipation main body base are respectively provided with side sealing plates.

2. The air-cooled fiber laser based on modular heat dissipation method according to claim 1, characterized in that: A heat-conducting material is filled between the low negative heat load surface and the laser optical cavity panel.

3. The air-cooled fiber laser based on modular heat dissipation method according to claim 1, characterized in that: The heat sinks at the front and rear ends of the heat sink body base are both arc-shaped or V-shaped and are recessed toward the interior of the heat sink body base.

4. The air-cooled fiber laser based on modular heat dissipation method according to claim 1, characterized in that: A liquid cooling module is arranged on one or both of the side sealing plates.

5. The air-cooled fiber laser based on modular heat dissipation method according to claim 1, characterized in that: A heat pipe is installed in the heat dissipation body base, and the side of the heat pipe is in contact with the high heat load surface. At the same time, the heat pipe passes through the top and bottom surfaces of the heat dissipation body base and contacts the side sealing plate.

6. The air-cooled fiber laser based on modular heat dissipation method according to claim 5, characterized in that: The heat pipes are U-shaped or spiral-shaped and are arranged in two rows, the upper row of heat pipes contacts the side sealing plate on the top surface of the heat dissipation body base, and the lower row of heat pipes contacts the side sealing plate on the bottom surface of the heat dissipation body base.

7. The air-cooled fiber laser based on modular heat dissipation method according to claim 1, characterized in that: When two heat dissipation body bases are provided, the heat dissipation body bases are stacked up and down, and two adjacent heat dissipation body bases are connected by a connecting plate, and a laser optical cavity panel is used to simultaneously assemble the low heat load surface covering all the heat dissipation body bases.

8. The air-cooled fiber laser based on modular heat dissipation method according to claim 1, characterized in that: The connecting plate is mounted on a high heat load surface of the heat dissipation body base.

9. The air-cooled fiber laser based on modular heat dissipation method according to claim 1, characterized in that: The side sealing plate is a plate structure with internal integrated liquid cooling.

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