Laser pumping source based on direct liquid cooling contact

Abstract

The utility model provides a laser pumping source based on direct liquid cooling contact, which comprises a pumping light source assembly and a cooling plate, the side end face of the cooling plate is provided with a liquid inlet and a liquid outlet, a liquid conveying channel is distributed in the cooling plate, one end of the liquid conveying channel extends to the liquid inlet, and the other end of the liquid conveying channel extends to the liquid outlet. The other end of the liquid conveying channel extends to the liquid outlet; a liquid opening is formed in the upper end of the cooling plate, and a liquid conveying channel in a preset area in the cooling plate is exposed to the outside through the liquid opening; the pump light source assembly is arranged at the upper end of the liquid opening, and when cooling liquid is input into the liquid conveying channel, the lower end of the pump light source assembly makes contact with the cooling liquid in the liquid conveying channel in the preset area, so that cooling of the pump light source assembly is achieved; the lower end of the pump light source assembly is in direct contact with the cooling liquid in the cooling plate, so that the heat dissipation efficiency of the pump light source assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical communication technology, and in particular to a laser pump source based on direct liquid-cooled contact. Background Technology

[0002] Currently, the mainstream heat dissipation solution for high-power lasers typically uses an aluminum-based cold plate (thermal conductivity ≈ 200 W / m·K) in conjunction with a circulating water system. Its technical shortcomings are mainly reflected in the following: Firstly, the indirect heat transfer structure requires the use of thermally conductive silicone grease (k = 1–5 W / m·K) or thermally conductive pads (k = 3–8 W / m·K) as interface materials to fill the assembly gap between the laser chip and the aluminum-based cold plate, forming a four-stage thermal resistance chain of "device → interface material → cold plate → coolant," with a total thermal resistance as high as 0.25–0.4 °C·cm. 2 / W, poor heat dissipation performance; on the other hand, during long-term use, the interface material has the problem of aging and failure. As time goes by, the thermal resistance of the interface material increases year by year, resulting in a decrease in heat dissipation efficiency and poor stability. It cannot meet the heat dissipation requirements of high-power lasers and directly affects the stability of laser wavelength.

[0003] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0004] The problem this invention aims to solve is how to improve heat dissipation efficiency and stability.

[0005] In a first aspect, a laser pump source based on direct liquid-cooled contact is provided, comprising: a pump source assembly 1 and a cooling plate 2, wherein:

[0006] The cooling plate 2 has an inlet 21 and an outlet 22 on its side end face. The cooling plate 2 has a liquid delivery channel 23 distributed inside it. One end of the liquid delivery channel 23 extends to the inlet 21 and the other end of the liquid delivery channel 23 extends to the outlet 22.

[0007] The upper end of the cooling plate 2 is provided with a liquid inlet 24, which exposes the liquid delivery channel 23 of a preset area inside the cooling plate 2.

[0008] The pump light source assembly 1 is disposed at the upper end of the liquid inlet 24. When coolant is introduced into the liquid delivery channel 23, the lower end of the pump light source assembly 1 comes into contact with the coolant in the liquid delivery channel 23 in the preset area to achieve cooling of the pump light source assembly 1.

[0009] Preferably, the size of the liquid inlet 24 is the same as the lower outer contour size of the pump light source assembly 1.

[0010] Preferably, the depth of the infusion channel 23 is 3mm-20mm.

[0011] Preferably, the infusion channel 23 includes a plurality of first liquid flow channels 231, which are arranged in an array inside the cooling plate 2, and adjacent first liquid flow channels 231 are interconnected.

[0012] The liquid inlet 24 is disposed on a plurality of first liquid flow channels 231, exposing a plurality of arrayed first liquid flow channels 231 to the outside.

[0013] Preferably, the infusion channel 23 includes multiple sections of second infusion channels 232 and first heat dissipation channels 233, wherein:

[0014] The first heat dissipation groove 233 is located in a preset area inside the cooling plate 2. One end of the first heat dissipation groove 233 is connected to the liquid inlet 21 through the second liquid flow groove 232, and the other end of the first heat dissipation groove 233 is connected to the liquid outlet 22 through the second liquid flow groove 232. The size of the first heat dissipation groove 233 is the same as the lower outer contour size of the pump light source assembly 1.

[0015] The liquid inlet 24 is disposed on the first heat dissipation groove 233, exposing the first heat dissipation groove 233 to the outside.

[0016] Preferably, the first heat dissipation groove 233 is provided with a plurality of first flow guiding baffles 234, which are arranged in an array in the first heat dissipation groove 233.

[0017] Preferably, the second liquid flow channel 232 is connected to the first heat dissipation channel 233 through a first transition channel 235. The width of the first transition channel 235 gradually increases from the second liquid flow channel 232 until it is equal to the width of the first heat dissipation channel 233, so as to connect with the first heat dissipation channel 233.

[0018] Preferably, the infusion channel 23 includes multiple third infusion channels 236 and multiple second heat dissipation channels 237, wherein:

[0019] The plurality of second heat dissipation slots 237 are arranged in an array in the preset area, and the adjacent second heat dissipation slots 237 are interconnected through the third liquid flow channel 236.

[0020] The second heat dissipation groove 237 closest to the liquid inlet 21 in the preset area is connected to the liquid inlet 21 through the third liquid flow groove 236, and the second heat dissipation groove 237 closest to the liquid outlet 22 in the preset area is connected to the liquid outlet 22 through the third liquid flow groove 236.

[0021] Preferably, each of the second heat dissipation slots 237 is provided with a plurality of second flow guide baffles 238, which are arranged in an array in the second heat dissipation slots 237.

[0022] Preferably, the third liquid flow channel 236 is connected to the second heat dissipation channel 237 via a second transition channel 239. The width of the second transition channel 239 gradually increases from the third liquid flow channel 236 until it is equal to the width of the second heat dissipation channel 237, so as to connect with the second heat dissipation channel 237.

[0023] This invention provides a laser pump source based on direct liquid-cooled contact, comprising: a pump source assembly 1 and a cooling plate 2, wherein: an inlet 21 and an outlet 22 are provided on the side end face of the cooling plate 2, and liquid delivery channels 23 are distributed inside the cooling plate 2, one end of the liquid delivery channel 23 extending to the inlet 21 and the other end extending to the outlet 22; an opening 24 is provided at the upper end of the cooling plate 2, which exposes a predetermined area of ​​the liquid delivery channels 23 inside the cooling plate 2; The pump light source assembly 1 is disposed at the upper end of the liquid inlet 24. When coolant is introduced into the liquid delivery channel 23, the lower end of the pump light source assembly 1 comes into contact with the coolant in the liquid delivery channel 23 in the preset area to achieve cooling of the pump light source assembly 1. By directly contacting the lower end of the pump light source assembly 1 with the coolant in the cooling plate 2, the contact thermal resistance is greatly reduced. The high specific heat characteristics of the coolant are directly utilized to construct a direct heat transfer channel between the pump light source assembly 1 and the coolant, which significantly improves the heat dissipation efficiency of the pump light source assembly 1. Attached Figure Description

[0024] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a laser pump source based on direct liquid-cooled contact is provided for an embodiment of this utility model;

[0026] Figure 2 A partial structural schematic diagram of a laser pump source based on direct liquid-cooled contact is provided for an embodiment of this utility model;

[0027] Figure 3 A top perspective view of a partial structural schematic diagram of a laser pump source based on direct liquid cooling contact, provided for an embodiment of this utility model;

[0028] Figure 4 A thermal diagram of a laser pump source based on direct liquid-cooled contact is provided for an embodiment of this utility model;

[0029] Figure 5 Another schematic diagram of a laser pump source based on direct liquid-cooled contact provided for an embodiment of this utility model;

[0030] Figure 6 A top view of another laser pump source structure based on direct liquid-cooled contact provided for an embodiment of this utility model;

[0031] Figure 7 Another thermal diagram of a laser pump source based on direct liquid-cooled contact provided for an embodiment of this utility model;

[0032] Figure 8 A top view of another schematic diagram of a laser pump source part structure based on direct liquid cooling contact provided for an embodiment of this utility model;

[0033] Figure 9 A top view of another schematic diagram of a laser pump source part structure based on direct liquid cooling contact provided for an embodiment of this utility model;

[0034] Figure 10 A thermal diagram of a laser pump source based on direct liquid-cooled contact provided for an embodiment of this utility model;

[0035] The attached figures are numbered as follows:

[0036] Pump light source assembly 1; cooling plate 2; liquid inlet 21; liquid outlet 22; liquid delivery channel 23; first liquid flow channel 231; second liquid flow channel 232; first heat dissipation channel 233; first flow guide baffle 234; first transition channel 235; third liquid flow channel 236; second heat dissipation channel 237; second flow guide baffle 238; second transition channel 239; liquid opening 24. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0038] 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 disclosure 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 disclosure.

[0039] In the description of this utility model, 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 indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more. Furthermore, for example, the description may use the prefix "A" or "B" to describe the same type of nouns as two independent entities. In this case, the features defined with "A" and "B" are used only to distinguish between similar entities and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0040] In describing some embodiments, the terms "coupled," "coupled," and "connected," and their derivative expressions, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "coupled" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact. However, the terms "connected" or "coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other, such as "optical coupling" or "wireless connection." The embodiments disclosed herein are not necessarily limited to the scope of this invention.

[0041] In the description of this utility model, "A and / or B" will be used to represent specific features. The corresponding expressions include the following three combinations: only A, only B, and a combination of A and B.

[0042] As used in this invention, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the specified value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the specified quantity, i.e., the limitations of the measurement system.

[0043] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as openly inclusive, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples; that is, although they may be incorporated into embodiments or examples using the above terms for reasons such as order and position, it does not limit them to be incorporated in combination by a single embodiment or example.

[0044] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0045] Example 1:

[0046] This embodiment provides a laser pump source based on direct liquid-cooled contact, such as... Figure 1 and Figure 2 As shown, it includes: a pump light source assembly 1 and a cooling plate 2, wherein:

[0047] The cooling plate 2 has an inlet 21 and an outlet 22 on its side surface. The cooling plate 2 has internal fluid channels 23, one end of which extends to the inlet 21 and the other end to the outlet 22. The cooling plate 2 has an opening 24 at its upper end, exposing a predetermined area of ​​the fluid channels 23 inside the cooling plate 2. The pump light source assembly 1 is positioned above the opening 24. When coolant is introduced into the fluid channels 23, the lower end of the pump light source assembly 1 contacts the coolant in the predetermined area of ​​the fluid channels 23, thereby cooling the pump light source assembly 1.

[0048] In this embodiment, the lower end of the pump light source assembly 1 is typically rectangular, and the side end face of the pump light source assembly 1 is used for laser emission. The cooling plate 2 has intricately extending liquid channels 23 for transporting coolant. The inlet 21 and outlet 22 are both located at the side end of the cooling plate 2, and both are connected to an external coolant storage device. The coolant storage device inputs coolant into the liquid channels 23 in the cooling plate 2 through the inlet 21. After passing through the liquid channels 23 in the cooling plate 2, the coolant is output back to the coolant storage device from the outlet 22, completing the coolant circulation. Simultaneously, during the coolant transport process, sufficient outlet pressure needs to be maintained to ensure that the coolant in the internal liquid channels 23 remains full during the coolant circulation process, thereby ensuring the heat exchange efficiency when the cooling plate 2 is in contact with the pump light source assembly 1.

[0049] In this embodiment, the liquid inlet 24 is located in a preset area on the top of the cooling plate 2. This preset area is determined by those skilled in the art based on the distribution of the liquid channels 23 in the cooling plate 2. When the pump light source assembly 1 is positioned above the liquid inlet 24, its lower end perfectly matches the liquid inlet 24. The lower periphery of the pump light source assembly 1 is sealed to the upper end of the liquid inlet 24, allowing the lower end of the pump light source assembly 1 to directly contact the coolant in the liquid channels 23 while preventing coolant leakage. In this embodiment, the lower end of the pump light source assembly 1 and the liquid inlet 24 can be sealed using a sealing ring or adhesive application. Compared to existing technologies, the direct contact between the pump light source assembly 1 and the coolant effectively improves the heat dissipation efficiency of the pump light source assembly 1.

[0050] In one embodiment, the size of the liquid inlet 24 can be smaller than the size of the lower end of the pump light source assembly 1, so that the lower end of the pump light source assembly 1 can completely cover the liquid inlet 24 and be sealed and fixed with sealant. However, considering the heat exchange area of ​​the pump light source assembly 1, when the size of the liquid inlet 24 is smaller than the lower end of the pump light source assembly 1, only a part of the lower end of the pump light source assembly 1 can be included in the liquid inlet 24. That is, only the area included in the liquid inlet 24 can contact the coolant in the cooling plate 2. On the one hand, the small heat exchange area leads to poor heat dissipation. On the other hand, the main heat source at the lower end of different models of pump light source assemblies 1 may be different. If the main heat source at the lower end of the pump light source assembly 1 cannot be completely included in the liquid inlet 24 at the same time, then that model of pump light source assembly 1 cannot be applied to the cooling plate 2 corresponding to the corresponding liquid inlet 24.

[0051] In one embodiment, the size of the liquid inlet 24 is consistent with the outer contour size of the lower end of the pump light source assembly 1. In this embodiment, when the size of the liquid inlet 24 is consistent with the outer contour size of the lower end of the pump light source assembly 1, the outer edge of the lower end of the pump light source assembly 1 is sealed and connected with the upper edge of the liquid inlet 24. After the liquid delivery channel 23 in the cooling plate 2 is filled with coolant, the coolant in the liquid delivery channel 23 within the range of the liquid inlet 24 contacts the lower end of the pump light source assembly 1, and heat exchange cooling of the lower end of the pump light source assembly 1 is achieved under the circulation of coolant.

[0052] In this embodiment, the lower outer contour dimensions of the pump light source assembly 1 can be 200mm*360mm*40mm, and the dimensions of the liquid inlet 24 can be 180mm*340mm. The depth of the infusion channel 23 is 3mm-20mm; the depth of the infusion channel 23 can be 3mm, 11.5mm, or 20mm.

[0053] Example 2:

[0054] Based on Embodiment 1, this embodiment provides another laser pump source based on direct liquid cooling contact. Unlike Embodiment 1, this embodiment designs the arrangement of the liquid channels 23 within the opening 24 to achieve stable heat exchange and heat dissipation at the lower end of the pump light source assembly 1.

[0055] like Figure 1 and Figure 3 As shown, the infusion channel 23 includes a plurality of first liquid flow channels 231, which are arranged in an array inside the cooling plate 2, and adjacent first liquid flow channels 231 are interconnected; the liquid opening 24 is provided on the plurality of first liquid flow channels 231, exposing the plurality of arrayed first liquid flow channels 231 to the outside.

[0056] In this embodiment, the infusion channel 23 is rotated and extended 180 degrees multiple times within the cooling plate 2 so that the infusion channel 23 is distributed as densely as possible on the cooling plate 2. The effect is that multiple adjacent arrays of first liquid channels 231 are arranged and interconnected. An opening 24 is set in a preset area on the cooling plate 2. The opening 24 exposes the multiple arrays of first liquid channels 231. The pump light source assembly 1 is then placed on the opening 24 so that the coolant in the arrays of first liquid channels 231 in the opening 24 comes into contact with the lower end of the pump light source assembly 1 for heat dissipation.

[0057] The advantage of the structure provided in this embodiment is that, since the first liquid channel 231 is formed by the liquid channel 23 being extended and rotated multiple times within the cooling plate 2, each first liquid channel 231 is the necessary path for the coolant during circulation. Furthermore, the width of the first liquid channel 231 is relatively small, so the coolant will inevitably fill each first liquid channel 231 stably during circulation. At the same time, since the width of the first liquid channel 231 is relatively small, the circulation speed of the coolant inside each first liquid channel 231 is relatively faster under the same hydraulic pressure, which can ensure that each first liquid channel 231 within the opening port 24 stably cools and dissipates heat to the pump light source assembly 1 at the corresponding position.

[0058] In this embodiment, the depth of the first liquid flow channel 231 can be 3mm-20mm, and the interval between adjacent first liquid flow channels 231 can be 10mm-40mm.

[0059] It should be noted that in this embodiment, the spacing between the first liquid runoff channels 231 is relatively large. When the pump light source assembly 1 is connected to the liquid inlet 24, there is no coolant in the gaps between the first liquid runoff channels 231. Therefore, this part of the space cannot provide sufficient coolant for cooling the pump light source assembly 1, and the corresponding area on the pump light source assembly 1 cannot be effectively cooled, resulting in poor overall heat dissipation of the pump light source assembly 1. Therefore, if the structure of this embodiment is used for heat dissipation, the main heat source positions inside the pump light source assembly 1 can be aligned with the positions of the first liquid runoff channels 231 in the liquid inlet 24 as much as possible to ensure that each main heat source position can be effectively cooled. Figure 4 The image shown is a heat map corresponding to the structure provided in this embodiment.

[0060] Example 3:

[0061] This embodiment, based on Embodiment 1, provides another laser pump source based on direct liquid-cooled contact. By designing the arrangement of the liquid channels 23 within the range of the liquid inlet 24, stable heat exchange and heat dissipation are achieved at the lower end of the pump source assembly 1. Figure 1 and Figure 5 As shown, the infusion channel 23 comprises multiple sections of a second fluid flow channel 232 and a first heat dissipation channel 233, wherein:

[0062] The first heat dissipation groove 233 is located in a preset area inside the cooling plate 2. One end of the first heat dissipation groove 233 is connected to the liquid inlet 21 through the second liquid flow groove 232, and the other end of the first heat dissipation groove 233 is connected to the liquid outlet 22 through the second liquid flow groove 232. The size of the first heat dissipation groove 233 is the same as the lower outer contour size of the pump light source assembly 1. The liquid outlet 24 is provided on the first heat dissipation groove 233, exposing the first heat dissipation groove 233 to the outside.

[0063] In this embodiment, a first heat dissipation groove 233 matching the size of the pump light source assembly 1 is provided inside the cooling plate 2, and the liquid inlet 24 is provided on the first heat dissipation groove 233, so that the first heat dissipation groove 233 directly corresponds to the pump light source assembly 1. The first heat dissipation groove 233 is connected to the liquid outlet 22 and the liquid inlet 21 through the second liquid channel 232, so that the first heat dissipation groove 233 is filled with coolant and the coolant circulates. The coolant inside the first heat dissipation groove 233 can contact and dissipate heat to the entire lower part of the pump light source assembly 1. Compared with embodiment 2, the first heat dissipation groove 233 in the structure provided in this embodiment can cover the entire area of ​​the lower part of the pump light source assembly 1, so that the heat dissipation effect is more comprehensive and better.

[0064] Furthermore, in the structure provided in this embodiment, although the first heat sink 233 can completely cover the lower end of the pump light source assembly 1, this also results in the first heat sink 233 being relatively large in size and having a relatively larger internal space. This requires more coolant to fill the first heat sink 233. Simultaneously, since the width of the second cooling channel 232 is much smaller than that of the first heat sink 233, on the one hand, the discharge efficiency of the second cooling channel 232 is limited. During coolant circulation, the coolant in the first heat sink 233 cannot maintain a consistent circulation rate, and it takes a longer time for the coolant in the first heat sink 233 to be circulated out. Compared to embodiment 2, although... It can ensure that all positions at the lower end of the pump light source assembly 1 can be cooled, but the cooling effect at the position where the pump light source assembly 1 is in contact with the coolant will be weaker than in embodiment 2. On the other hand, due to the difference in width between the second liquid flow channel 232 and the first heat dissipation channel 233, the coolant input from the second liquid flow channel 232 to the first heat dissipation channel 233 is difficult to be transported to the position area near the sides of the first heat dissipation channel 233. The newly input coolant may not be able to diffuse to a far position after entering the first heat dissipation channel 233, and may be directly circulated out of the first heat dissipation channel 233. As a result, a large amount of coolant in the second liquid flow channel 232 is not effectively circulated, which further leads to poor heat dissipation effect.

[0065] To address the aforementioned problems, this embodiment also involves the following design: Figure 1 , Figure 5 and Figure 6 As shown, a plurality of first flow-guiding baffles 234 are provided in the first heat dissipation groove 233, and the plurality of first flow-guiding baffles 234 are arranged in an array in the first heat dissipation groove 233.

[0066] In this embodiment, the extension direction of the first flow-guiding baffle 234 in the first heat dissipation tank 233 is consistent with the direction in which the coolant enters the first heat dissipation tank 233. The array of multiple first flow-guiding baffles 234 divides the interior of the first heat dissipation tank 233 into multiple flow channels. When the coolant is input from the second flow channel 232, the impact force brought by the coolant input is applied to each narrow flow channel, making it easier to push the coolant in each flow channel towards the opposite end, so that the coolant can more easily reach the opposite end along the flow channel and be output from the second flow channel 232 at the opposite end, thereby improving the circulation efficiency of the coolant and thus improving the heat dissipation effect.

[0067] In this embodiment, the height of the first drainage baffle 234 can be 3mm-20mm, and the height of the first drainage baffle 234 is less than the depth of the first heat dissipation groove 233.

[0068] Furthermore, considering that the width of the second coolant channel 232 is much smaller than the width of the first heat dissipation channel 233, if the second coolant channel 232 is directly connected to the first heat dissipation channel 233, the coolant will have difficulty effectively diffusing in the second heat dissipation channel 237 after entering it through the second coolant channel 232. This would result in new coolant only flowing near the flow channel, making it difficult for coolant in other areas to be refreshed and circulated. Therefore, this embodiment also involves the following design:

[0069] like Figure 1 , Figure 5 and Figure 6 As shown, the second liquid flow channel 232 is connected to the first heat dissipation channel 233 through a first transition channel 235. The width of the first transition channel 235 gradually increases from the second liquid flow channel 232 until it is equal to the width of the first heat dissipation channel 233, so as to connect with the first heat dissipation channel 233.

[0070] The first transition channel 235 allows the coolant to effectively spread to corresponding width positions before being input into the first heat dissipation tank 233. This ensures that newly input coolant can enter the first heat dissipation tank 233 from different width positions, effectively improving the coolant circulation efficiency at various locations within the first heat dissipation tank 233. Similarly, when the coolant in the first heat dissipation tank 233 exits from the second flow channel 232, the coolant across the entire width of the first heat dissipation tank 233 enters the first transition channel 235 and flows into the second flow channel 232 through the gradually decreasing width channel, effectively improving the coolant circulation efficiency at various locations within the first heat dissipation tank 233. Figure 7 The image shown is a heat map corresponding to the structure provided in this embodiment.

[0071] Example 4:

[0072] Based on Embodiment 1, and considering the relatively large spacing between the first liquid-cooled tanks 231 in Embodiment 2, which leads to insufficient effective heat dissipation area, this embodiment provides a laser pump source based on direct liquid-cooled contact to improve the circulation efficiency of the coolant while ensuring the heat dissipation area, as follows:

[0073] like Figure 1 and Figure 8 As shown, the infusion channel 23 includes multiple third flow channels 236 and multiple second heat dissipation channels 237, wherein: the multiple second heat dissipation channels 237 are arranged in an array in the preset area, and adjacent second heat dissipation channels 237 are interconnected through the third flow channels 236; the second heat dissipation channel 237 closest to the inlet 21 in the preset area is connected to the inlet 21 through the third flow channels 236, and the second heat dissipation channel 237 closest to the outlet 22 in the preset area is connected to the outlet 22 through the third flow channels 236.

[0074] In this embodiment, the width of the second heat dissipation groove 237 is greater than that of the third liquid flow groove 236. Compared with the multiple spaced first liquid flow grooves 231 in Embodiment 2, since the width of each second heat dissipation groove 237 is larger, the number of second heat dissipation grooves 237 required in the same preset area is significantly less than that of the first liquid flow grooves 231. Therefore, the number of spaced areas between adjacent second heat dissipation grooves 237 in this embodiment is significantly less than the number of spaced areas between adjacent first liquid flow grooves 231 in Embodiment 2. In this embodiment, there are fewer areas in the preset area that cannot dissipate heat, so the effective heat dissipation area is larger.

[0075] by Figure 8 For example, Figure 8Three second heat dissipation slots 237 are provided, wherein the width of the second heat dissipation slots 237 is greater than that of the third liquid flow slot 236, as can be seen. Figure 8 There are only two intervals between the three second heat dissipation slots 237 in the middle, while the intervals corresponding to Embodiment 2 are different. Figure 3 There are four intervals between the five first liquid flow channels 231, therefore the structure provided in this embodiment has a larger effective heat dissipation area. Meanwhile, from... Figure 8 As can be seen, the width difference between the second heat dissipation tank 237 and the third coolant channel 236 is small, so the coolant input into the third coolant channel 236 can circulate more effectively inside the second heat dissipation tank 237.

[0076] Based on the above structure, in order to further improve the circulation effect of the coolant in the second heat dissipation tank 237, thereby improving the heat dissipation effect, this embodiment also involves the following design:

[0077] like Figure 1 and Figure 9 As shown, each of the second heat dissipation slots 237 is provided with a plurality of second flow-guiding baffles 238, which are arranged in an array within the second heat dissipation slot 237. The third liquid flow channel 236 is connected to the second heat dissipation slot 237 via a second transition channel 239. The width of the second transition channel 239 gradually increases from the third liquid flow channel 236 until it increases to be equal to the width of the second heat dissipation slot 237, so as to connect with the second heat dissipation slot 237.

[0078] like Figure 1 and Figure 9 As shown, in this embodiment, the second drainage baffle 238 has the same function as the first drainage baffle 234 in embodiment 3, and the second transition groove 239 has the same function as the first transition groove 235 in embodiment 3. Refer to the description in embodiment 3, and it will not be repeated here.

[0079] In this embodiment, the width of the third liquid flow channel 236 can be 6-20mm, the width of the second heat dissipation channel 237 can be 16-40mm, the depth of the second heat dissipation channel 237 can be 3-20mm, and the height of the second drainage baffle 238 can be 3-20mm.

[0080] like Figure 10 The image shown is a thermal diagram of the structure provided in this embodiment.

[0081] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser pump source based on direct liquid cooling contact, characterized in that, include: Pump light source assembly (1) and cooling plate (2), wherein: The cooling plate (2) has an inlet (21) and an outlet (22) on its side end face. The cooling plate (2) has a liquid delivery channel (23) distributed inside. One end of the liquid delivery channel (23) extends to the inlet (21), and the other end of the liquid delivery channel (23) extends to the outlet (22). The upper end of the cooling plate (2) is provided with a liquid inlet (24), which exposes the liquid delivery channel (23) of the preset area inside the cooling plate (2); The pump light source assembly (1) is located at the upper end of the liquid inlet (24). When coolant is introduced into the liquid delivery channel (23), the lower end of the pump light source assembly (1) comes into contact with the coolant in the liquid delivery channel (23) of the preset area to achieve cooling of the pump light source assembly (1).

2. The direct liquid cooled contact based laser pump source of claim 1, wherein, The size of the liquid inlet (24) is the same as the outer contour size of the lower end of the pump light source assembly (1).

3. The direct liquid cooled contact based laser pump source of claim 1, wherein, The depth of the infusion channel (23) is 3mm-20mm.

4. The direct liquid cooled contact based laser pump source of claim 1, wherein, The infusion channel (23) includes a plurality of first liquid flow channels (231), which are arranged in an array inside the cooling plate (2), and adjacent first liquid flow channels (231) are interconnected. The liquid inlet (24) is provided on multiple first liquid flow channels (231), exposing multiple arrayed first liquid flow channels (231) to the outside.

5. The direct liquid cooled contact based laser pump source of claim 1, wherein, The infusion channel (23) includes multiple sections of second flow channels (232) and a first heat dissipation channel (233), wherein: The first heat dissipation groove (233) is located in a preset area inside the cooling plate (2). One end of the first heat dissipation groove (233) is connected to the liquid inlet (21) through the second liquid flow groove (232), and the other end of the first heat dissipation groove (233) is connected to the liquid outlet (22) through the second liquid flow groove (232). The size of the first heat dissipation groove (233) is consistent with the lower outer contour size of the pump light source assembly (1). The liquid inlet (24) is disposed on the first heat dissipation tank (233), exposing the first heat dissipation tank (233) to the outside.

6. The direct liquid cooled contact based laser pump source of claim 5, wherein, The first heat sink (233) is provided with a plurality of first flow guide baffles (234), which are arranged in an array in the first heat sink (233).

7. The direct liquid cooled contact based laser pump source of claim 5, wherein, The second liquid flow channel (232) is connected to the first heat dissipation channel (233) through a first transition channel (235). The width of the first transition channel (235) gradually increases from the second liquid flow channel (232) until it is equal to the width of the first heat dissipation channel (233) so as to connect with the first heat dissipation channel (233).

8. The direct liquid cooled contact based laser pump source of claim 1, wherein, The infusion channel (23) includes multiple third flow channels (236) and multiple second heat dissipation channels (237), wherein: The plurality of second heat dissipation slots (237) are arranged in the preset area, and the adjacent second heat dissipation slots (237) are interconnected through the third liquid flow channel (236); The second heat dissipation tank (237) closest to the liquid inlet (21) in the preset area is connected to the liquid inlet (21) through the third liquid flow tank (236), and the second heat dissipation tank (237) closest to the liquid outlet (22) in the preset area is connected to the liquid outlet (22) through the third liquid flow tank (236).

9. The direct liquid cooled contact based laser pump source of claim 8, wherein, Each of the second heat dissipation slots (237) is provided with a plurality of second flow guide baffles (238), which are arranged in an array in the second heat dissipation slots (237).

10. The direct liquid cooled contact based laser pump source of claim 8, wherein, The third liquid flow channel (236) is connected to the second heat dissipation channel (237) through a second transition channel (239). The width of the second transition channel (239) gradually increases from the third liquid flow channel (236) until it is equal to the width of the second heat dissipation channel (237) so as to connect with the second heat dissipation channel (237).

Images