A high-efficiency heat dissipation structure for fiber lasers

Abstract

This utility model relates to the field of fiber lasers, specifically to a high-efficiency heat dissipation structure for the interior of a fiber laser. It includes a mounting frame for fixing to the inside of the fiber laser, with multiple fans fixedly connected to the inner wall of the mounting frame and a mesh screen on the front side of the mounting frame; and a heat dissipation assembly disposed inside the fiber laser. The heat dissipation assembly includes an upper shell, a base fixedly connected to the lower part of the upper shell, and multiple heat dissipation plates fixedly connected to the lower part of the upper shell. The heat dissipation assembly is made of aluminum alloy, utilizing its high thermal conductivity to quickly absorb heat generated by the core components inside the laser. Multiple heat dissipation plates expand the heat dissipation area, accelerating heat transfer to the air medium. The bent design of the heat dissipation plates, combined with staggered triangular baffles, disrupts the airflow path, prolongs the contact time between the airflow and the heat dissipation plates, and increases the heat exchange area, allowing heat to be more fully carried away by the airflow, significantly improving heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fiber lasers, specifically to a high-efficiency heat dissipation structure inside a fiber laser. Background Technology

[0002] Multi-wavelength single-mode fiber lasers, through wavelength division multiplexing (WDM) technology, enable the transmission of multiple wavelengths of signals within the same optical fiber, significantly improving the transmission capacity and communication efficiency of optical fibers. This makes them a key support for building ultra-high-speed backbone networks and dense access networks. In the field of fiber optic sensing, they can simultaneously emit multiple stable single-mode wavelengths, enabling high-precision, distributed measurement of various physical quantities such as temperature, strain, and pressure. They are widely used for health monitoring of large infrastructure such as bridges and oil pipelines, as well as process monitoring in complex industrial environments.

[0003] During operation, multi-wavelength single-mode fiber lasers generate a large amount of heat due to limitations in photoelectric conversion efficiency, particularly in core components such as the pump source and gain fiber.

[0004] Currently, traditional air-cooling structures mostly use a single fan combined with a simple, flat heatsink. The airflow generated by the fan lacks directional guidance and is prone to forming turbulent vortices in the heatsink area. This results in insufficient airflow coverage on some heatsink surfaces, while other areas suffer from excessive airflow concentration, leading to wasted airflow and ultimately uneven airflow distribution.

[0005] Therefore, it is necessary to invent a high-efficiency heat dissipation structure inside a fiber laser to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency heat dissipation structure for the internal structure of a fiber laser. By using a guide plate in the mounting frame to directionally guide airflow, an inclined airflow-diverting component in the heat dissipation assembly to divert airflow, a triangular baffle and a bent heat dissipation plate to enhance heat exchange, and a side plate to constrain the airflow path, this invention can solve the problems of uneven airflow distribution, low heat exchange efficiency, and easy local overheating in the existing technology of "traditional air-cooled structures".

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency heat dissipation structure for the interior of a fiber laser, comprising;

[0008] A mounting frame is used to fix it inside the fiber laser. Multiple sets of fans are fixedly connected to the inner wall of the mounting frame, and a net is provided on the front side of the mounting frame.

[0009] A heat dissipation assembly is installed inside the fiber laser. The heat dissipation assembly includes an upper shell, a base fixedly connected to the lower part of the upper shell, multiple heat dissipation plates fixedly connected to the lower part of the upper shell, a wind-facing component fixedly connected to the side of the upper shell near the mounting frame, side plates fixedly connected to the left and right sides of the base near the multiple heat dissipation plates, airflow deflectors staggered on the outer side of the heat dissipation plates, and air outlets on the left and right sides of the base.

[0010] Preferably, the spoiler is configured in a triangular shape.

[0011] Preferably, the end of the heat sink away from the mounting frame is bent, and the bending direction of the heat sink is axially offset to the left and right sides of the center line of the upper shell.

[0012] Preferably, a guide plate is fixedly connected to the inner rear wall of the mounting frame.

[0013] Preferably, the wind-facing component is inclined.

[0014] Preferably, the upper part of the wind-facing component is located at the horizontal center of the mounting frame, and the heat dissipation component is made of aluminum alloy.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] The heat dissipation component of this invention is made of aluminum alloy, which utilizes its high thermal conductivity to quickly absorb the heat generated by the core components inside the laser. Multiple heat dissipation plates expand the heat dissipation area and accelerate the transfer of heat to the air medium. The bending design of the heat dissipation plates, together with the staggered triangular baffles, can disrupt the airflow path, prolong the contact time between the airflow and the heat dissipation plates, and increase the heat exchange area, so that the heat is more fully carried away by the airflow, significantly improving the heat dissipation efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural breakdown diagram of the overall device in this utility model;

[0019] Figure 2 This is a rear view of the three-dimensional structure of the mounting frame in this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the heat dissipation component in this utility model;

[0021] Figure 4 This is a three-dimensional structural disassembly diagram of the heat dissipation component in this utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the overall device in this utility model, showing its installation state.

[0023] Legend:

[0024] 1. Mounting frame; 2. Fan; 3. Netting; 4. Guide plate; 5. Heat dissipation assembly; 51. Top shell; 52. Base; 53. Air intake component; 54. Heat dissipation plate; 55. Baffle component; 56. Side plate; 57. Air outlet. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1 - Figure 3 The diagram shows an efficient heat dissipation structure for the internal structure of a fiber laser, including a mounting frame 1 and a heat dissipation component 5, specifically;

[0027] Mounting frame 1 is used to fix the inside of the fiber laser as the basic fixing component of the entire heat dissipation structure. Multiple sets of fans 2 are fixedly connected to the inner wall of mounting frame 1 to provide active air cooling power for the heat dissipation system. Through the coordinated work of multiple sets of fans 2, a continuous airflow is generated to blow towards the heat dissipation component 5, which accelerates the air flow on the surface of the heat dissipation plate 54 and promotes the exchange of heat and cold air. A net 3 is set on the front side of mounting frame 1 to block external dust and impurities from entering the laser.

[0028] The heat dissipation component 5 is located inside the fiber laser and is responsible for absorbing the heat from the pump source and gain fiber inside the laser. The pump source and gain fiber are installed on the outside of the heat dissipation component 5 and the heat is efficiently dissipated through structural design. The heat dissipation component 5 includes an upper shell 51, which is in direct contact with the heat-generating components inside the laser and transfers the heat to the heat sink 54. It is a key intermediate carrier for heat conduction. A base 52 is fixedly connected to the lower part of the upper shell 51, which works with the upper shell 51 to form the overall frame of the heat dissipation structure.

[0029] like Figure 3 - Figure 5As shown, multiple sets of heat dissipation plates 54 are fixedly connected to the lower part of the upper shell 51. The end of the heat dissipation plate 54 away from the mounting frame 1 is bent. The bending direction of the heat dissipation plate 54 is offset to the left and right sides with the center line of the upper shell 51 as the axis. It is a multi-set parallel thin plate structure, which is the main carrier for heat dissipation. By increasing the contact area with the air, the heat transferred by the upper shell 51 is quickly conducted to the surface, and then the airflow generated by the fan 2 carries away the heat. A wind-facing component 53 is fixedly connected to the side of the upper shell 51 near the mounting frame 1. The wind-facing component 53 is inclined and diverts and buffers the cold air guided by the guide plate 4, so that the airflow is more evenly distributed between the heat dissipation plates 54, avoiding local airflow that is too strong or too weak, and improving the heat dissipation uniformity. Side plates 56 are fixedly connected to the left and right sides of the base 52 near the multiple sets of heat dissipation plates 54. This can prevent the airflow between the heat dissipation plates 54 from diffusing to the sides, ensuring that the cold air is concentrated in the area of ​​the heat dissipation plate 54 for heat exchange, and at the same time guiding the hot airflow to flow to the air outlet 57 of the base 52.

[0030] like Figure 3 and Figure 4 As shown, the outer side of the heat sink 54 is staggered with baffles 55, which are triangular in shape. These baffles disrupt the airflow direction between the heat sink 54, causing the originally smooth airflow to become turbulent. This prolongs the contact time between the airflow and the surface of the heat sink 54, increases the collision frequency between the airflow and the heat sink 54, and improves the heat exchange efficiency. Air outlets 57 are provided on both sides of the base 52. The hot air, after absorbing heat, is discharged through the air outlets 57 under airflow pressure. The air outlets 57 are aligned with the exhaust port of the fiber laser. A guide plate 4 is fixedly connected to the inner rear wall of the mounting frame 1 to guide the airflow generated by the fan 2. The upper part of the air intake 53 is located at the horizontal center of the mounting frame 1, allowing half of the airflow generated by the fan 2 to be directly blown into the fiber laser for direct heat dissipation. The heat dissipation component 5 is made of aluminum alloy.

[0031] The working principle of this utility model is as follows: After the multiple sets of fans 2 are started, they generate a continuous airflow. The airflow is guided by the guide plate 4 on the rear side of the mounting frame 1 to form a directional airflow that blows towards the heat dissipation component 5. During this process, the baffle 3 on the front side of the mounting frame 1 filters out dust and impurities in the air to prevent them from entering the laser and affecting the performance of the equipment.

[0032] The airflow first contacts the inclined windward component 53 of the heat dissipation component 5. Since the upper part of the windward component 53 is located in the horizontal middle of the mounting frame 1, part of the airflow directly enters the laser to assist in heat dissipation, while the other part is diverted by the windward component 53 and evenly guided between multiple heat dissipation plates 54. The heat dissipation plate 54 contacts the pump source, gain fiber and other heat-generating components inside the laser through the upper shell 51, and quickly conducts heat to its own surface. The high thermal conductivity of the aluminum alloy material ensures the high efficiency of this process.

[0033] The airflow passing between the heat sinks 54 is disrupted by the triangular baffles 55 arranged in an alternating pattern on the outer side of the plates, forming turbulence and prolonging the contact time with the heat sinks 54. At the same time, the side plates 56 on both sides of the base 52 constrain the airflow within the area of ​​the heat sinks 54. Under the guidance of pressure and the bending design of the heat sinks 54 to the left and right, the hot airflow that has absorbed heat is discharged through the air outlets 57 on the left and right sides of the base 52, and is discharged outside the equipment in conjunction with the exhaust port of the laser itself.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency heat dissipation structure for the internal structure of a fiber laser, characterized in that, include; Mounting frame (1) is used to fix it inside the fiber laser. Multiple sets of fans (2) are fixedly connected to the inner wall of the mounting frame (1). A net (3) is provided on the front side of the mounting frame (1). A heat dissipation assembly (5) is installed inside the fiber laser. The heat dissipation assembly (5) includes an upper shell (51), a base (52) is fixedly connected to the lower part of the upper shell (51), multiple heat dissipation plates (54) are fixedly connected to the lower part of the upper shell (51), a wind-facing component (53) is fixedly connected to the side of the upper shell (51) near the mounting frame (1), side plates (56) are fixedly connected to the left and right sides of the base (52) near the multiple heat dissipation plates (54), and air bleeders (55) are staggered on the outer side of the heat dissipation plates (54). Air outlets (57) are opened on the left and right sides of the base (52).

2. The high-efficiency heat dissipation structure inside a fiber laser according to claim 1, characterized in that: The spoiler (55) is configured in a triangular shape.

3. The high-efficiency heat dissipation structure inside a fiber laser according to claim 1, characterized in that: The end of the heat sink (54) away from the mounting frame (1) is bent, and the bending direction of the heat sink (54) is axially deflected to the left and right sides with the center line of the upper shell (51).

4. The high-efficiency heat dissipation structure inside a fiber laser according to claim 1, characterized in that: A guide plate (4) is fixedly connected to the inner rear wall of the mounting frame (1).

5. The high-efficiency heat dissipation structure inside a fiber laser according to claim 1, characterized in that: The wind-facing component (53) is set at an angle.

6. The high-efficiency heat dissipation structure inside a fiber laser according to claim 1, characterized in that: The upper part of the wind-facing component (53) is located at the horizontal center of the mounting frame (1), and the heat dissipation component (5) is made of aluminum alloy.

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