A laser crystal heat sink device

Abstract

The utility model discloses a kind of laser crystal heat sink devices, comprising: main body, the crystal groove of accommodating crystal is opened in main body, main body is divided into first body and second body along the diagonal line of crystal groove;The split surface of first body and second body is attached and is interconnected;The bottom of first body is opened with water inlet and water outlet for water cooling, water cooling channel is opened in first body and second body, water cooling channel is around the periphery of crystal groove, cooling water enters from water inlet and flows from water outlet in turn through the water cooling channel of first body and second body.This heat sink device in the application has good heat dissipation effect and is easy to install.

Description

Technical Field

[0001] This utility model relates to the field of laser crystal heat dissipation technology, and more specifically to a laser crystal heat sink device. Background Technology

[0002] Laser heat sinks offer advantages such as efficiently, rapidly, and stably dissipating the enormous heat generated by lasers, ensuring that the laser operates within its optimal temperature range. They are widely used to improve laser performance by increasing power, efficiency, wavelength stability, enhancing beam quality, and extending laser lifespan.

[0003] When an end-pumped Nd:YVO4 gain medium outputs a quasi-triple-level 914 nm laser, the pump light, after being focused into a small spot by a coupling mirror and entering the crystal, has a very short focal length of 4-5 mm. After focusing, the energy in the pump region of the laser crystal is highly concentrated, requiring a heat sink to quickly remove this "localized heat." However, existing water-cooled heat sinks can only conduct heat from a single direction, leading to localized heat accumulation and low thermal conductivity when used for short-focal-length pump light. This can also induce a thermal lensing effect, causing localized thermal expansion of the crystal, changes in refractive index, and affecting beam quality.

[0004] Therefore, developing a laser crystal heat sink device with good heat dissipation and easy installation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a laser crystal heat sink device with good heat dissipation effect and convenient installation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A laser crystal heat sink device includes: a main body, a crystal groove for accommodating a crystal is formed inside the main body, the main body is divided into a first main body and a second main body along the diagonal of the crystal groove; the dividing surfaces of the first main body and the second main body are attached to each other and connected to each other; a water inlet and a water outlet for water cooling are formed at the bottom of the first main body, and a water cooling channel is formed inside the first main body and the second main body, the water cooling channel surrounds the periphery of the crystal groove, and cooling water enters from the water inlet, flows through the water cooling channel of the first main body and the second main body in sequence, and flows out from the water outlet.

[0007] The beneficial effects of adopting the above technical solution are that the segmented structure of the first and second main bodies facilitates the rapid loading and unloading of the crystal, reducing maintenance difficulty; the water-cooling channel surrounds the crystal, improving heat dissipation uniformity and efficiency.

[0008] Preferably, the end of the crystal groove located on the back side of the crystal incident is recessed into the crystal groove to form a groove.

[0009] Preferably, the crystal groove has a chamfer at the port on the crystal's incident front. The chamfer prevents the sharp corner of the crystal groove from scratching the crystal's end face during crystal insertion, thus protecting the crystal's integrity.

[0010] Preferably, the chamfer is 45°.

[0011] Preferably, a fixing hole is provided at the bottom of the first body.

[0012] Preferably, a sealing gasket is provided at the connection between the water cooling channels of the first and second main bodies. The sealing gasket can eliminate the risk of water seepage and leakage, and ensure the long-term stable operation of the water cooling system.

[0013] Preferably, bolt holes are provided on the side walls of the first and second main bodies, and bolts are provided in the bolt holes for fixing the first and second main bodies.

[0014] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a laser crystal heat sink device, the beneficial effects of which are: (1) The main body is divided into sections to facilitate crystal loading and unloading; (2) Setting up a water-cooling channel around the crystal slot can improve the heat dissipation effect, quickly dissipate heat, and ensure that the crystal works stably under the 914 nm quasi-triple level laser output. (3) The groove and chamfer work together to protect the crystal end face, prevent dust and pollution, and extend service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 The attached figure is a structural schematic diagram of the main body provided by this utility model; Figure 2 The attached figure is a structural schematic diagram of the bottom of the main body provided by this utility model; Figure 3 The attached figure is an internal sectional view of the main body provided by this utility model; Figure 4 The attached figure is a structural schematic diagram of the first main body provided by this utility model.

[0017] In the figure, 1-Main body; 11-Crystal tank; 12-First main body; 13-Second main body; 14-Water inlet; 15-Water outlet; 16-Water cooling channel; 17-Groove; 18-Chamfer; 19-Fixing hole; 110-Bolt hole; 111-Sealing gasket. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model discloses a laser crystal heat sink device, including: a main body 1, a crystal groove 11 for accommodating a crystal is formed in the main body 1, the main body 1 is divided into a first main body 12 and a second main body 13 along the diagonal of the crystal groove 11; the dividing surfaces of the first main body 12 and the second main body 13 are attached to each other and connected to each other; the bottom of the first main body 12 is provided with a water inlet 14 and a water outlet 15 for water cooling, and a water cooling channel 16 is formed in the first main body 12 and the second main body 13, the water cooling channel 16 surrounds the periphery of the crystal groove 11, and cooling water enters from the water inlet 14, passes through the water cooling channel 16 of the first main body 12 and the second main body 13 in sequence, and flows out from the water outlet 15.

[0020] In one embodiment, the crystal is a cuboid with dimensions of 4*4*7mm. The shape and size of the crystal groove 11 are adapted to the crystal. The center of the crystal groove 11 is 28mm away from the lower boundary of the main body. The crystal groove 11 has dimensions of 4.1*4.1*7mm, with a 0.1mm assembly allowance reserved to facilitate crystal loading and unloading.

[0021] In one embodiment, the main body 1 is divided into two parts along the diagonal of the crystal, by the attachment... Figure 1-4 As can be seen, the second main body 13 is triangular in shape at the top. When the second main body 13 is connected to the first main body 12, the crystal is first placed in the crystal slot 11. Observing from the direction of pump light incidence, the second main body 13 is moved and assembled from the upper right to the lower left. This division method of the main body 1 can ensure that the laser incident path is not blocked by the structure during assembly, and at the same time facilitates the operator to quickly load and unload the laser crystal, reducing the difficulty of maintenance.

[0022] In one embodiment, the main body 1 is made of copper composite material. Copper has excellent thermal conductivity, which can quickly conduct the heat generated when the crystal is working. It can also improve the structural strength and corrosion resistance of the main body 1, avoid oxidation or rust caused by long-term contact with cooling water, and extend the service life of the heat sink device.

[0023] In one embodiment, the end of the crystal groove 11 located on the incident back side of the crystal is recessed into the crystal groove 11 to form a groove 17. This groove 17 can prevent dust and make the crystal less susceptible to contamination.

[0024] In one embodiment, the crystal groove 11 has a chamfer 18 at the port on the incident surface of the crystal. The chamfer 18 extends vertically 4mm into the heat sink. The chamfer structure can reduce the reflection loss of the laser on the incident surface, while avoiding sharp edges from scratching the crystal.

[0025] In one embodiment, chamfer 18 is 45°.

[0026] In one embodiment, the inner diameter of the inlet pipe is 4mm, extending vertically 37mm into the heat sink. An M6 thread is machined at the inlet, with the threaded section extending vertically 7mm, facilitating a threaded seal connection with an external water pipe. The center of the pipe is 25.5mm from the right edge of the heat sink, ensuring a reasonable distance between the water inlet path and the crystal placement area, thus improving heat dissipation efficiency. Cooling water enters through the inlet 14, passes through the water-cooling channel 16 surrounding the crystal, and exits from the outlet 15, forming a highly efficient circulating heat dissipation path.

[0027] In one embodiment, a fixing hole 19 is provided at the bottom of the first body 12. The fixing hole 19 is "racetrack shaped" and consists of two hemispherical holes connected together. The distance between the centers of the two hemispheres is 6mm, and the radius of each hemisphere is 2.2mm. During installation, the center of the left hemisphere is 4.5mm away from the left edge of the first body 12. This shape is designed to accommodate fixing bolts of different angles, while also reserving a certain adjustment margin to facilitate the position calibration of the first body 12 during installation.

[0028] In one embodiment, a sealing gasket 111 is provided at the connection between the water cooling channels of the first body 12 and the second body 13. The sealing gasket 111 is 1mm thick and its material is compatible with the pipe and the body 1. It can effectively seal the interface of the water cooling channel 16, completely solve the problem of water seepage and leakage during the operation of the heat sink, and ensure the continuous and stable operation of the water cooling system. At the same time, the water cooling channel 16 is located at the horizontal center of the heat sink, which allows the cooling water to evenly cover the area around the crystal, maximizing the heat dissipation effect.

[0029] In one embodiment, bolt holes 110 are provided on the side walls of the first body 12 and the second body 13, and bolts are disposed in the bolt holes 110 for fixing the first body 12 and the second body 13. Figure 1 , 2As shown, bolt holes 110 are provided on the bottom of the side of the second main body 13 and the top of the side of the first main body 12. The bolts adopt the M2 standard thread specification, the bolt length is 18mm, and the connection method is horizontal connection. At the same height, two bolts are provided, and the distance between the two symmetrical bolts is 9mm. The horizontal force ensures the stable connection between the heat sink and the external structure and avoids displacement during operation. At the same time, the bolt fixing at the two locations of the first main body 12 and the second main body 13 forms a fixed structure that echoes each other from top to bottom, further improving the overall installation stability of the main body.

[0030] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present 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 present 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 disclosed herein.

Claims

1. A laser crystal heat sink device, characterized in that, include: The main body has a crystal groove inside to accommodate crystals. The main body is divided into a first main body and a second main body along the diagonal of the crystal groove. The dividing surfaces of the first main body and the second main body are attached to each other and connected to each other. The bottom of the first main body has a water inlet and a water outlet for water cooling. The first and second main bodies have water cooling channels that surround the periphery of the crystal groove. Cooling water enters from the water inlet, passes through the water cooling channels of the first and second main bodies, and flows out from the water outlet.

2. The laser crystal heat sink device according to claim 1, characterized in that, The crystal groove is located at one end on the back side of the crystal incident surface, which is recessed into the crystal groove to form a groove.

3. The laser crystal heat sink device according to claim 2, characterized in that, The crystal groove has a chamfer at the port on the front side of the crystal incident.

4. The laser crystal heat sink device according to claim 3, characterized in that, The chamfer is 45°.

5. A laser crystal heat sink device according to claim 1, characterized in that, The bottom of the first main body has a fixing hole.

6. The laser crystal heat sink device according to claim 1, characterized in that, A sealing gasket is provided at the connection between the water cooling channels of the first and second main bodies.

7. A laser crystal heat sink device according to claim 6, characterized in that, Bolt holes are provided on the side walls of the first and second main bodies, and bolts are installed in the bolt holes for fixing the first and second main bodies.

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