Water-cooled heat sink sealing structure and solid-state laser

Abstract

The utility model belongs to solid laser technical field, concretely provides a kind of water-cooled heat sink sealing structure and solid laser.The water-cooled heat sink sealing structure includes base;First water cooling passage and second water cooling passage are equipped in base;Heat sink limiting slot, first water inlet, first water outlet are set up on base;First sealing ring groove is set up in the bottom of heat sink limiting slot, and second sealing ring groove and third sealing ring groove are set in the ring of first sealing ring groove;First water inlet is located in second sealing ring groove;First water outlet is located in third sealing ring groove;First sealing ring is equipped in first sealing ring groove;Second sealing ring is equipped in second sealing ring groove;Third sealing ring is equipped in third sealing ring groove;First water inlet is communicated with first water cooling passage;First water outlet is communicated with second water cooling passage.This structure does not need complex pipeline connection, realizes the isolation of cooling water and optical cavity by double-layer sealing ring, prevents LBO crystal from being influenced by working substance cooling water leakage.

Description

Technical Field

[0001] This utility model belongs to the field of solid-state laser technology, specifically relating to a water-cooled heat sink sealing structure and a solid-state laser. Background Technology

[0002] Solid-state lasers use solid-state laser materials as their gain medium. The gain medium within the laser cavity withstands extremely high pump energy, requiring high-power cooling to reduce thermal distortion. This is typically achieved by directly introducing cooling water into the heat sink of the gain medium, rapidly removing heat through heat conduction. Simultaneously, the optical resonator is extremely sensitive; thermal deformation caused by temperature changes severely impacts laser performance, necessitating temperature control of the laser's optical cavity. Furthermore, the LBO crystal used to generate 355nm ultraviolet laser light within the laser cavity is highly hygroscopic, requiring the lowest possible relative humidity. Moreover, due to the presence of high-energy spatial light within the optical cavity, it must be sealed to prevent the presence of dust, water, or other impurities. Existing laser cavities are typically sealed with materials like fluororubber, forming a closed chamber. While fluororubber effectively isolates liquid water and has some permeability, the combination of cooling water on one side and the extremely low humidity of the sealed cavity on the other means that leaked water molecules will continuously increase the humidity within the cavity, ultimately leading to the deliquescence of the LBO crystal. Therefore, improving the sealing of the gain medium heat sink and the cavity is crucial. Utility Model Content

[0003] The purpose of this invention is to overcome the problem of poor heat sink performance and cavity sealing in the prior art.

[0004] To address this, the present invention provides a water-cooled heat sink sealing structure, comprising a base; the base having a first water-cooling channel and a second water-cooling channel; the base having a heat sink limiting groove, a first water inlet, and a first water outlet; the bottom of the heat sink limiting groove having a first sealing ring groove and a second sealing ring groove and a third sealing ring groove disposed within the first sealing ring groove; the first water inlet being located within the second sealing ring groove; the first water outlet being located within the third sealing ring groove; a first sealing ring being disposed within the first sealing ring groove; a second sealing ring being disposed within the second sealing ring groove; a third sealing ring being disposed within the third sealing ring groove; the first water inlet communicating with the first water-cooling channel; and the first water outlet communicating with the second water-cooling channel.

[0005] Specifically, a vent hole is provided in the heat sink limiting groove, which penetrates the base; the vent hole is located in the first sealing ring groove.

[0006] Specifically, the aforementioned heat sink limiting groove is provided with a first mounting hole for connecting the water-cooled heat sink.

[0007] Specifically, the base is provided with a drain outlet; the drain outlet is connected to the first water inlet through a drain channel.

[0008] Specifically, the base is provided with a third water inlet; the third water inlet is connected to the first water cooling channel; and a water cooler connector is provided at the third water inlet.

[0009] This utility model also provides a solid-state laser, including a water-cooled heat sink and the above-mentioned water-cooled heat sink sealing structure; the water-cooled heat sink is installed in the heat sink limiting groove; the water-cooled heat sink is provided with a second water inlet and a second water outlet respectively corresponding to the first water inlet and the first water outlet; a third water-cooling channel is provided inside the water-cooled heat sink; the third water-cooling channel is connected to the second water inlet and the second water outlet.

[0010] Specifically, the aforementioned water-cooled heat sink is provided with a second mounting hole for connecting to the base.

[0011] Specifically, the aforementioned solid-state laser also includes a frame; the frame is disposed on the base and together with the base forms a laser cavity; the heat sink limiting groove is disposed within the frame.

[0012] Specifically, the frame and the base are integrally formed.

[0013] Specifically, a cover plate for sealing the laser cavity is installed on the top of the aforementioned frame.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] The water-cooled heat sink sealing structure provided by this invention is simple in structure and low in cost, requiring no complex piping connections. It achieves isolation between the cooling water and the optical cavity through a double-layer sealing ring structure, preventing the LBO crystal from being affected by leakage of the working medium's cooling water. Furthermore, the vent in the double seal allows water molecules leaking from the inner sealing ring to be discharged, further improving the waterproof and moisture-proof effect.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a water-cooled heat sink sealing structure.

[0018] Figure 2 This is a schematic diagram of a water-cooled heat sink sealing structure.

[0019] Figure 3 This is a schematic diagram of a heat sink limiting groove structure with a sealing ring.

[0020] Figure 4 This is a schematic diagram of a heat sink limiting groove structure without a sealing ring.

[0021] Figure 5 This is a schematic diagram of a water-cooled heat sink structure.

[0022] Figure 6 This is a schematic diagram of a solid-state laser.

[0023] Figure 7 This is a cross-sectional view of a solid-state laser.

[0024] Figure 8 yes Figure 7 Enlarged view of area A in the middle.

[0025] Explanation of reference numerals in the attached drawings: 1. Base; 2. Heat sink limiting groove; 3. First water cooling channel; 4. Second water cooling channel; 5. First sealing ring groove; 6. First sealing ring; 7. First water inlet; 8. Second sealing ring groove; 9. Second sealing ring; 10. First water outlet; 11. Third sealing ring groove; 12. Third sealing ring; 13. Vent hole; 14. First mounting hole; 15. Third water inlet; 16. Drain outlet; 17. Drainage channel; 18. Water-cooled heat sink; 19. Second water inlet; 20. Second water outlet; 21. Third water cooling channel; 22. Second mounting hole; 23. Frame. Detailed Implementation

[0026] 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 scope of protection of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "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 utility model 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 utility model.

[0028] 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 utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] Reference Figure 1-4This utility model provides a water-cooled heat sink sealing structure, including a base 1; the base 1 has a first water-cooling channel 3 and a second water-cooling channel 4; the base 1 has a heat sink limiting groove 2, a first water inlet 7, and a first water outlet 10; the bottom of the heat sink limiting groove 2 has a first sealing ring groove 5 and a second sealing ring groove 8 and a third sealing ring groove 11 disposed within the first sealing ring groove 5; the first water inlet 7 is located within the second sealing ring groove 8; the first water outlet 10 is located within the third sealing ring groove 11; a first sealing ring 6 is disposed within the first sealing ring groove 5; a second sealing ring 9 is disposed within the second sealing ring groove 8; a third sealing ring 12 is disposed within the third sealing ring groove 11; the first water inlet 7 is connected to the first water-cooling channel 3; the first water outlet 10 is connected to the second water-cooling channel 4. The specific positions of the first water inlet 7 and the first water outlet 10 are designed according to the matching water-cooled heat sink 18 structure, and the first water-cooling channel 3 and the second water-cooling channel 4 are reasonably arranged according to the size of the base 1 to ensure effective cooling of the base 1.

[0030] In use, the water-cooled heat sink 18 is installed in the heat sink limiting groove 2. The first sealing ring 6 in the first sealing ring groove 5 seals the connection between the water-cooled heat sink 18 and the base 1, forming a sealed space between the bottom of the water-cooled heat sink 18 and the heat sink limiting groove 2. The first water inlet 7 and the first water outlet 10 are respectively connected to the water cooling channel and the inlet / outlet of the water-cooled heat sink 18. Water is supplied to the water cooling channel of the water-cooled heat sink 18 through the first water cooling channel 3 and the second water cooling channel 4 of the base 1, so that the first water cooling channel 3, the first water inlet 7, the water cooling channel of the water-cooled heat sink 18, the first water outlet 10, and the second water cooling channel 4 form a connected cooling water flow channel. The second sealing ring 9 and the third sealing ring 12 surrounding the first water inlet 7 and the second water inlet 19 provide a first layer of sealing for the cooling water, and the first sealing ring 6 in the first sealing ring groove 5 provides a second layer of sealing.

[0031] To better isolate water molecules formed by the vaporization of cooling water, a vent 13 is provided in the heat sink limiting groove 2, penetrating the base 1; the vent 13 is located within the first sealing ring groove 5. When cooling water forms water vapor and escapes from the first inlet 7 and / or the first outlet 10 into the sealed space formed between the bottom of the water-cooled heat sink 18 and the heat sink limiting groove 2, the leaked gaseous water molecules can flow into the atmosphere through the vent 13, isolating the cooling water from the optical cavity.

[0032] Preferably, the thickness of the second sealing ring 9 and the third sealing ring 12 is greater than the depth of the second sealing ring groove 8 and the third sealing ring groove 11, so that the second sealing ring 9 and the third sealing ring 12 protrude outside the corresponding sealing ring groove. After the water-cooled heat sink 18 is installed, while the sealing ring seals the corresponding inlet and outlet water ports, a certain gap is formed between the bottom surface of the water-cooled heat sink 18 and the surface of the heat sink limiting groove 2, so that the leaked water molecules can connect with the vent hole 13.

[0033] Optionally, the heat sink limiting groove 2 is provided with a first mounting hole 14 for connecting the water-cooled heat sink 18. The water-cooled heat sink 18 is fixed within the heat sink limiting groove 2 by engaging the first mounting hole 14. The specific number and distribution of the first mounting holes 14 are based on the structural design of the water-cooled heat sink 18, ensuring that while being fixed, the first water inlet 7 and the first water outlet 10 correspond to the water-cooling channel of the water-cooled heat sink 18.

[0034] In one embodiment, a drain outlet 16 is provided on the base 1; the drain outlet 16 is connected to the first water inlet 7 through a drain channel 17. After the device has been running for a certain period of time, all the coolant can be drained and replaced through the drain outlet 16.

[0035] Furthermore, the base 1 is provided with a third water inlet 15; the third water inlet 15 is connected to the first water-cooling channel 3; a water chiller connector is provided at the third water inlet 15. The base 1 is connected to an external water chiller through the water chiller connector to provide cooling water for the device.

[0036] Reference Figure 5-8 This utility model also provides a solid-state laser, including a water-cooled heat sink 18 and the aforementioned water-cooled heat sink sealing structure; the water-cooled heat sink 18 is installed in the heat sink limiting groove 2; the water-cooled heat sink 18 is provided with a second water inlet 19 and a second water outlet 20 corresponding to the first water inlet 7 and the first water outlet 10, respectively; a third water-cooling channel 21 is provided inside the water-cooled heat sink 18; the third water-cooling channel 21 connects the second water inlet 19 and the second water outlet 20. In use, cooling water enters the third water-cooling channel 21 of the water-cooled heat sink 18 through the first water-cooling channel 3, the first water inlet 7, and the second water inlet 19 of the base 1, and then flows into the second water-cooling channel 4 through the second water outlet 20 and the first water outlet 10, thereby achieving heat dissipation of the base 1 and the water-cooled heat sink 18. The sealing gaskets fitted inside the first water inlet 7 and the second water inlet 19 provide a first layer of sealing for the cooling water, and the sealing rings in the sealing ring grooves provide a second layer of sealing for the connection between the water-cooled heat sink 18 and the base 1.

[0037] Furthermore, the water-cooled heat sink 18 is provided with a second mounting hole 22 for connecting with the base 1. Through the cooperation of the second mounting hole 22, the water-cooled heat sink 18 is fixed in the heat sink limiting groove 2.

[0038] In one embodiment, the solid-state laser further includes a frame 23; the frame 23 is disposed on the base 1, and together with the base 1, forms a laser cavity; the heat sink limiting groove 2 is disposed within the frame 23. The frame 23 provides working space for and protects the internal optical components of the laser.

[0039] To improve the sealing of the laser cavity, the frame 23 is integrally formed with the base 1.

[0040] Furthermore, a cover plate for sealing the laser cavity is installed on the top of the frame 23. The cover plate, frame 23, and base 1 together form a sealed laser cavity.

[0041] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A water-cooled heat sink sealing structure, characterized in that: Includes a base (1); the base (1) is provided with a first water cooling channel (3) and a second water cooling channel (4); the base (1) is provided with a heat sink limiting groove (2), a first water inlet (7) and a first water outlet (10); the bottom of the heat sink limiting groove (2) is provided with a first sealing ring groove (5) and a second sealing ring groove (8) and a third sealing ring groove (11) set in the first sealing ring groove (5); the first water inlet (7) is located in the second sealing ring groove (8); the first water outlet (10) is located in the third sealing ring groove (11); the first sealing ring groove (5) is provided with a first sealing ring (6); the second sealing ring groove (8) is provided with a second sealing ring (9); the third sealing ring groove (11) is provided with a third sealing ring (12); the first water inlet (7) is connected to the first water cooling channel (3); the first water outlet (10) is connected to the second water cooling channel (4).

2. The water-cooled heat sink sealing structure as described in claim 1, characterized in that: The heat sink limiting groove (2) is provided with a vent hole (13) that passes through the base (1); the vent hole (13) is located in the first sealing ring groove (5).

3. The water-cooled heat sink sealing structure as described in claim 1, characterized in that: The heat sink limiting groove (2) is provided with a first mounting hole (14) for connecting the water-cooled heat sink (18).

4. The water-cooled heat sink sealing structure as described in claim 1, characterized in that: The base (1) is provided with a drain outlet (16); the drain outlet (16) is connected to the first water inlet (7) through a drain channel (17).

5. The water-cooled heat sink sealing structure as described in claim 1, characterized in that: The base (1) is provided with a third water inlet (15); the third water inlet (15) is connected to the first water cooling channel (3); a water cooler connector is provided at the third water inlet (15).

6. A solid-state laser, characterized in that, The device includes a water-cooled heat sink (18) and a water-cooled heat sink sealing structure as described in any one of claims 1-5; the water-cooled heat sink (18) is installed in the heat sink limiting groove (2); the water-cooled heat sink (18) is provided with a second water inlet (19) and a second water outlet (20) respectively corresponding to the first water inlet (7) and the first water outlet (10); a third water-cooling channel (21) is provided inside the water-cooled heat sink (18); the third water-cooling channel (21) is connected to the second water inlet (19) and the second water outlet (20).

7. The solid-state laser as described in claim 6, characterized in that: The water-cooled heat sink (18) is provided with a second mounting hole (22) for connecting to the base (1).

8. The solid-state laser as described in claim 6, characterized in that: It also includes a frame (23); the frame (23) is disposed on the base (1) and together with the base (1) forms a laser cavity; the heat sink limiting groove (2) is disposed inside the frame (23).

9. The solid-state laser as described in claim 8, characterized in that: The frame (23) and the base (1) are integrally formed.

10. The solid-state laser as described in claim 8, characterized in that: The top of the frame (23) is fitted with a cover plate for sealing the laser cavity.

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