Air-cooled radiator and fiber laser

Abstract

The utility model belongs to the laser heat dissipation device field, and discloses an air cooling radiator and an optical fiber laser, the air cooling radiator comprises a uniform temperature plate, an air cooling heat dissipation part and a heat storage assembly, the uniform temperature plate is provided with a cold end and a heat collection end used for arranging a heating device, and the cold end of the uniform temperature plate is provided with the heat storage assembly and the air cooling heat dissipation part. Heat dissipation and heat storage are combined, heat dissipation is carried out in a convection heat dissipation and conduction heat dissipation mode, the advantages of temperature equalization and phase change heat storage of the temperature equalization plate are fully played, the influence of relatively low heat conductivity coefficient on heat dissipation of the temperature equalization plate is avoided, heat storage and heat dissipation are integrated, and the heat dissipation efficiency is improved. The light power of an interval type light emitting laser and a pulse type laser is improved, the applicability to higher environment temperature is improved, and meanwhile, through the interpenetration matching of the heat dissipation convex parts and the abdicating gaps of the shell, the situation that the heat storage shell is low in heat conductivity coefficient, and rapid transfer of heat of the temperature equalizing plate to the heat dissipation fins is blocked can be avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of laser heat dissipation devices, specifically relating to an air-cooled heat sink and a fiber laser. Background Technology

[0002] In existing air-cooled fiber lasers, most heat-generating components are mounted on a metal substrate 03, such as an aluminum or copper substrate. This metal substrate has heat dissipation fins 04, which are cooled by a fan. Figure 1 As shown, heat-generating devices such as pump 01 are conducted to the metal substrate through the interface material 02. The heat is then transferred to the fins through the metal substrate, and the airflow carries away the heat through the fins. This type of heat dissipation structure has the following problems that lead to poor heat dissipation:

[0003] (1) The heat dissipation path of the laser pump is long, while the thermal conductivity of the metal substrate is low. The heat from the diode chip inside the pump is conducted through the pump housing to the thermal interface material, and then through the thermally conductive material to the metal substrate. The heat transfer path is long and the resistance of the heat transfer path is large, resulting in a temperature difference between the pump and the metal substrate. The thermal conductivity of the metal substrate is low, and the heat exchange coefficient of air cooling is low, only 20-150 W / (m2.K), which easily causes heat concentration in the pump source and damage. Therefore, traditional air-cooled fiber lasers that use metal substrates as heat dissipation bases generally have low laser power and are not suitable for high-power lasers.

[0004] (2) Only one heat dissipation method: only heat dissipation through convection, which is not suitable for scenarios with high ambient temperature and instantaneous high power of laser, high power pulsed laser application scenarios, and intermittent light output application scenarios.

[0005] In addition, there is also a cooling method using a TEC (Transfer Regulator) and fan structure. The TEC cooling principle is based on the Peltier effect, which has a low conversion efficiency of only about 0.6. 60% of the electrical energy is used to transfer heat from the heat source, while the remaining 40% generates Joule heat. The heat generated by the TEC includes heat transferred from the cold end and some heat generated by its own electrical energy. That is, the cooling method adds 40% heat to the entire system, resulting in high energy consumption, high cost, and is very unfriendly to portable lasers powered by batteries. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide an air-cooled heat sink and a fiber laser to solve the problems of the single heat dissipation method and poor heat dissipation performance of existing air-cooled heat dissipation devices.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] On one hand, a wind-cooled heat sink is provided, including a vapor chamber, a wind-cooled heat dissipation section, and a heat storage component. The vapor chamber has a cold end and a heat collection end for mounting a heat-generating device. The cold end of the vapor chamber is provided with the heat storage component and the wind-cooled heat dissipation section. The heat storage component includes a housing with a cavity for filling a phase change material. The housing is attached to the surface of the cold end of the vapor chamber to cover at least a portion of the cold end of the vapor chamber. In a possible implementation, the wind-cooled heat dissipation section includes a plurality of heat dissipation protrusions disposed on the vapor chamber, the plurality of heat dissipation protrusions being spaced apart from each other. The housing is provided with a plurality of clearance gaps, each clearance gap allowing a heat dissipation protrusion to pass through.

[0009] In a possible implementation, the cavity includes a side cavity and a plurality of sub-cavities separated by the clearance gap, the side cavity being in communication with each sub-cavity, and each sub-cavity having a heat-conducting rib connected to a heat spreader.

[0010] In a possible implementation, the heat dissipation protrusion includes a first heat dissipation fin connected to a heat spreader, and the housing is provided with a plurality of second heat dissipation fins that are spaced apart and staggered with the first heat dissipation fins.

[0011] In one possible implementation, the cavity is formed by a flow channel located in the shell and a heat spreader plate, the shell being made of a metallic material and welded to the heat spreader plate.

[0012] In a possible implementation, both the upper and lower surfaces of the cold end are provided with a set of heat storage components and air-cooled heat dissipation parts, and the air-cooled heat dissipation parts provided on the lower surface of the cold end also cover the lower surface of the heat collection end of the heat exchange plate.

[0013] In a possible implementation, the heat spreader includes a heat-conducting plate one, a heat-conducting plate two, and a flow channel component. The heat-conducting plate one and the heat-conducting plate two are fixedly connected, and the flow channel component for filling the heat-conducting working fluid is disposed between the heat-conducting plate one and the heat-conducting plate two.

[0014] On the other hand, a fiber laser is also provided, including a wind-cooled heat sink as described in any of the above technical solutions, wherein the heat-generating device is a pump source.

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

[0016] This utility model's air-cooled heat sink combines heat dissipation and heat storage through a heat spreader, air-cooled heat dissipation section, and heat storage component. It utilizes both convection and conduction for heat dissipation. While providing air cooling, the latent heat of phase change in the heat storage component rapidly absorbs heat transferred from the heat spreader, significantly improving heat dissipation performance. This makes it suitable for higher-power heat-generating devices and more adaptable to higher ambient temperatures. Furthermore, the integrated design of this component increases its integration density, further enhancing heat dissipation efficiency. Simultaneously, by inserting phase change material blocks between the heat dissipation fins, the heat spreader and phase change material achieve seamless contact, rapidly absorbing heat from the heat spreader through thermal conduction. This also allows for rapid heat dissipation through the heat spreader and the second fin when the light is off.

[0017] The fiber laser of this invention, by employing the aforementioned air-cooled heat sink, can effectively dissipate heat from the pump source of the fiber laser, thereby enabling the fiber laser to be configured with higher optical power. Attached Figure Description

[0018] Figure 1 This refers to the existing laser pump heat dissipation structure;

[0019] Figure 2 A three-dimensional view of an air-cooled heat sink;

[0020] Figure 3 An exploded view of an air-cooled radiator;

[0021] Figure 4 This is a schematic diagram of the structure of an air-cooled radiator with its heat storage components concealed.

[0022] Figure 5 A schematic diagram of the heat storage component of an air-cooled radiator from a first-view perspective;

[0023] Figure 6 This is a schematic diagram of the heat storage component of an air-cooled radiator from a second perspective.

[0024] Figure 7 This is a three-dimensional view of a fiber laser.

[0025] In the diagram: 01-Pump; 02-Interface material; 03-Metal substrate; 04-Heat dissipation fins; 1-Population plate; 11-Heat collector end; 12-Cold end; 13-Heat conduction plate one; 14-Flow channel component; 15-Heat conduction plate two; 2-Air-cooled heat dissipation section; 21-First heat dissipation fins; 3-Heat storage component; 31-Shell; 311-Sub-cavity section; 312-Side cavity section; 313-Leaning gap; 314-Heat conduction ribs; 32-Second heat dissipation fins; 33-Flow channel; 4-Pump shell. Detailed Implementation

[0026] 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 specific embodiments.

[0027] Please refer to Figure 2-7 As shown, an embodiment of this application provides an air-cooled heat sink that may include a heat spreader 1, an air-cooled heat dissipation section 2, and a heat storage component 3. The heat spreader 1 has a cold end 12 and a heat collection end 11 for mounting a heat-generating device. The cold end 12 of the heat spreader 1 is provided with the heat storage component 3 and the air-cooled heat dissipation section 2. The heat storage component 3 includes a housing 31, which has a cavity for filling a phase change material. The housing 31 is attached to the surface of the cold end 12 of the heat spreader 1 to cover at least a portion of the cold end 12 of the heat spreader 1.

[0028] The vapor chamber 1 serves to distribute heat evenly, transferring heat from the heat-generating device at the heat collector end 11 to the cold end 12. The air-cooled heat dissipation section 2 at the cold end 12 then cools the device, and the heat storage component 3 absorbs the heat, achieving the desired heat dissipation. The heat-generating device can be a device or component that generates significant heat, such as the pump source of a laser, or other devices; there are no restrictions. The heat storage component 3 mainly includes a housing 31, whose cavity is filled with a phase change material. The latent heat of the phase change material rapidly absorbs the transferred heat, and the housing 31 is attached to the surface of the cold end 12 to cover a large area of ​​the vapor chamber 1 at the cold end 12 for better heat storage. The heat storage component 3 is located at the cold end 12 of the vapor chamber 1, preventing heat accumulation and difficulty in heat dissipation in the pump source area. The heat dissipation fins in the pump source area are directly cooled by a fan for rapid heat dissipation. In this way, the heat transferred from the heat-generating device to the cold end 12 through the vapor chamber 1 can achieve effective heat dissipation through both air cooling and heat storage by the phase change material, significantly improving heat dissipation performance.

[0029] There are two types of materials that can be used for phase change materials: solid-liquid phase change materials and solid-solid phase change materials. Solid-liquid phase change materials include low-melting-point materials, paraffinic alkanes, and inorganic hydrated hydrochloric acid; solid-solid phase change materials include polyols. Since inorganic hydrated salts have supercooling, the embodiments of this application preferably use low-melting-point alloys, paraffinic alkanes, and polyols, or a mixture of one or two of these three types.

[0030] Based on this, please continue to refer to Figure 4 and Figure 5As shown, the air-cooled heat dissipation unit 2 includes a plurality of heat dissipation protrusions disposed on the heat spreader 1, the plurality of heat dissipation protrusions being spaced apart from each other; the housing 31 is provided with a plurality of clearance gaps 313, each clearance gap 313 allowing a heat dissipation protrusion to pass through. In this way, heat can be transferred to the heat dissipation protrusions disposed on the heat spreader 1, and the airflow formed by the heat dissipation protrusions and the fan dissipates heat through a larger contact area, thereby achieving the purpose of air cooling. Furthermore, by providing clearance gaps 313 on the housing 31, it is possible for the evenly spaced heat dissipation protrusions to pass through the clearance gaps 313, thereby increasing the coverage area of ​​the heat storage component 3 housing 31 and the heat spreader 1 without affecting the heat dissipation of the heat spreader 1 itself, rapidly transferring heat, giving the heat spreader 1 heat capacity, and improving the heat dissipation capacity for heat-generating devices. Specifically, the clearance gaps 313 are intermittent gaps.

[0031] Through the above technical solution, by combining the heat spreader 1 and the phase change material, the characteristics of the heat storage material—namely, its ability to store a large amount of heat in a short period while maintaining its own temperature—are utilized. This allows the laser to operate for a longer period at higher ambient temperatures. For example, when the ambient temperature is 50°C, during air cooling, the convective heat transfer coefficient further decreases due to the small temperature difference between the ambient temperature and the temperature resistance of the heat-generating device (the convective heat transfer coefficient is positively correlated with the temperature difference). At this time, the phase change material maintains its own temperature while absorbing latent heat. For instance, if a phase change material with a phase change temperature of 52°C is selected, the phase change material will not fail at the ambient temperature, but its temperature remains constant when heat reaches it, and it can still absorb a large amount of latent heat. By combining the heat spreader 1 and optimizing the structure of the heat storage material area, along with the air cooling unit 2, the above functions are fully realized, improving the adaptability to higher ambient temperatures. Meanwhile, by inserting phase change material blocks between the heat dissipation fins, the heat exchange plate and the phase change material are in seamless contact, allowing the heat on the heat exchange plate to be quickly absorbed through thermal conduction, and the heat can be quickly dissipated through the heat exchange plate and the second fin when the light is off.

[0032] In one application scenario, such as applying a wind-cooled heat sink to a fiber laser, the combination of heat storage material and heat spreader 1 has an additional beneficial effect: for intermittently emitting laser devices and pulsed laser devices, heat dissipation can be achieved through fan convection during emission and heat storage by phase change material. The convection cooling under the action of the fan can simultaneously remove the heat stored in the phase change material and the heat from the pump housing 31, thereby increasing the optical power by more than 2 times. That is, through the above design, the optical power of intermittently emitting lasers can reach 4000W to 10000W.

[0033] In one embodiment, combined with Figure 5 and Figure 6As shown, the shell 31 is also divided into multiple spaced and end-connected sections by clearance gaps 313. Correspondingly, the cavity includes a side cavity 312 and multiple sub-cavities 311 separated by the clearance gaps 313. Each side cavity 312 communicates with each sub-cavity 311, and each sub-cavity 311 is provided with heat-conducting ribs 314 connected to the heat spreader 1. This cavity structure facilitates zoned heat storage. Each heat storage zone is interconnected, allowing for phase change transformation of the internal phase change material during heat absorption and permitting a certain degree of flow. The heat-conducting ribs 314 also reduce contact thermal resistance and improve heat exchange efficiency. Specifically, one or more heat-conducting ribs 314 can be provided, and they can be arranged along the length of each sub-cavity 311 to improve thermal conductivity.

[0034] Preferred, combined Figure 2 and 5 As shown, the heat dissipation protrusion includes a first heat dissipation fin 21 connected to the heat spreader 1, and the housing 31 is provided with a plurality of second heat dissipation fins 32 that are spaced apart and staggered with the first heat dissipation fins 21. By using the fin structure of the first heat dissipation fins 21 as the heat dissipation protrusion, it is possible to occupy less space while facilitating the arrangement of the heat storage component 3, and to facilitate heat dissipation by contacting the airflow with a larger surface area. Furthermore, by providing the second heat dissipation fins 32 on the housing 31, the heat of the heat storage component 3 can be carried away simultaneously during convective heat dissipation, thereby improving the heat storage capacity of the phase change material and the heating heat transfer rate.

[0035] In the specific implementation process, combined with Figure 6 As shown, the cavity can be formed by the flow channel 33 provided in the shell 31 and the heat spreader 1. The shell 31 is made of metal and welded to the heat spreader 1. In this way, it is convenient for the phase change heat storage material to absorb the transferred heat, and it is also possible to quickly transfer heat by using metal materials and welding as a solid conduction method.

[0036] To further improve the heat dissipation and heat storage effects of the heat spreader 1, a set of heat storage components 3 and air-cooled heat dissipation parts 2 are provided on both the upper and lower surfaces of the cold end 12. The air-cooled heat dissipation parts 2, located on the lower surface of the cold end 12, also cover the lower surface of the heat collection end 11 of the heat spreader 1. By providing heat storage components 3 and air-cooled heat dissipation parts 2 on both the upper and lower surfaces of the heat spreader 1, the heat dissipation and heat storage effects can be further improved, thereby facilitating the heat dissipation of heat-generating devices such as high-power pump sources and providing optical power to the laser.

[0037] Please refer to Figure 3As shown in the embodiments of this application, the heat spreader 1 includes a heat-conducting plate 13, a heat-conducting plate 2 15 and a flow channel component 14. The heat-conducting plate 13 and the heat-conducting plate 2 15 are fixedly connected, and the flow channel component 14 for filling the heat-conducting working fluid is disposed between the heat-conducting plate 13 and the heat-conducting plate 2 15.

[0038] The flow channel component 14 filled with heat-conducting working fluid can conduct heat rapidly through liquid-gas phase change. Several flow channel components 14 are distributed between heat-conducting plate 13 and heat-conducting plate 2 15 in a spaced parallel distribution structure or other structure. The heat-conducting working fluid inside the heat spreader 1 moves between the two ends of the flow channel by changing from liquid to gaseous state in the flow channel mainly constructed by the flow channel components. It quickly transfers heat from the pump heat source end to the cold end 12. At the cold end 12, the heat needs to be released to form an internal circulation, thereby achieving rapid heat conduction.

[0039] In order to reduce or eliminate the contact thermal resistance between the heat exchange plate 1 and the air-cooled heat dissipation part 2 and the heat storage component 3, in one embodiment, the heat-conducting plate 13, the air-cooled heat dissipation part 2 and the heat storage component 3 are integrally formed from thermally conductive metal material; the heat-conducting plate 25, the heat storage component 3 provided on the heat-conducting plate 25 and the air-cooled heat dissipation part 2 are also integrally formed from thermally conductive metal material.

[0040] The heat-conducting plate 13, the first heat dissipation fins 21 of the upper surface air-cooled heat dissipation section 2, and the shell 31 of the heat storage component 3 are all formed by CNC machining from a single piece of thermally conductive metal material, thus obtaining the upper part of the heat spreader 1. The heat plate layer 1, the first heat dissipation fins 21 of the lower surface, and the shell 31 of the heat storage component 3 are all formed by CNC machining from a single piece of thermally conductive metal material, thus obtaining the lower part of the heat spreader 1. The upper part of the heat spreader 1, the flow channel component 14, and the lower part of the heat spreader 1 are welded together to obtain the heat spreader 1. In this way, the heat spreader 1 can have a higher thermal conductivity, there is no contact thermal resistance between the fins and the shell 31 of the heat spreader 1, and through the flow channel component 14 of the capillary structure inside the heat spreader 1 and the heat-conducting working fluid, the heat-conducting working fluid conducts heat rapidly through liquid-gas phase change, realizing rapid heat transfer. At the same time, this also makes the heat spreader 1 more integrated, realizing an integrated design, which is more conducive to improving the laser power of the laser.

[0041] Specifically, the housing 31 of the heat storage component 3 is made of metal and is a single piece, which can be machined by a single-piece machine. The phase change material has a lower thermal conductivity than the metal housing material (e.g., aluminum alloy). Therefore, an array of heat-conducting fins is added internally. The heat-conducting fins and the metal housing material 31 are CNC machined from a single metal blank, reducing the contact thermal resistance between the fins and the metal housing material 31. The heat-conducting fins and the heat spreader 1 are connected by welding, which further reduces contact thermal resistance.

[0042] The heat transfer medium can be any one of methane, ethane, water, ethanol, acetone, ammonia, hydrofluorocarbon 134A, ethylene glycol, Freon, and methanol.

[0043] Please refer to Figure 7 As shown in the embodiments of this application, a fiber laser is also provided, including a wind-cooled heat sink as described in any of the above technical solutions, wherein the heat-generating device is a pump source.

[0044] The pump source is one of the main components of a fiber laser. Its function is to excite the laser gain medium, pumping activated particles from the ground state to a higher energy level to achieve population inversion. A pump source typically includes a pump housing 4 and optical components such as diodes and lenses housed within it. The aforementioned air-cooled heat sink is suitable for cooling higher-power pump sources. The pump source is located at the heat collection end 11 of the vapor chamber 1.

[0045] During operation, the high heat generated by the high-power pump source can be evenly distributed through the heat spreader 1, allowing the heat to be quickly transferred to the cold end 12. The first heat dissipation fins 21 and the heat storage component 3 of the cold end 12 can simultaneously perform air cooling and heat storage, thus improving the heat dissipation performance of the pump source.

[0046] Preferably, the pump housing 4 and the heat spreader 1 are integrally formed from a thermally conductive metal material. By integrally forming the pump housing 4 and the heat spreader 1, both are themselves a single piece of metal, eliminating the need for a thermally conductive interface material, allowing for rapid heat transfer between the same materials. In other words, the pump diode chip is essentially directly mounted on the heat spreader 1 housing 31, quickly eliminating heat concentration on the chip.

[0047] Specifically, after the upper part of the heat spreader 1, the flow channel component 14, and the lower part of the heat spreader 1 are welded together to obtain the heat spreader 1 blank, the pump housing 4, which is suitable for mounting devices such as diode chips, is obtained by CNC machining according to the pump structure and fin requirements. Then, the diode chip, lens and other optical devices are installed to obtain a complete pump source and the first heat dissipation fins 21 with a certain spacing.

[0048] To more fully illustrate the embodiments of this application, specific materials and parameters of two embodiments as shown in Table 1 are provided for further explanation.

[0049] Please refer to Table 1. In Example 1, the heat spreader 1 is made of aluminum alloy 3003 with a thermal conductivity of 15000 W / mK. Acetone is used as the internal heat transfer medium. Since the internal temperature is saturated vapor pressure, it undergoes a phase change when heated, resulting in a dynamic phase change temperature. The housing 31 of the heat storage component is made of aluminum alloy 6063 with a thermal conductivity of 209 W / mK. The internal phase change material is 53# phase change wax, which has a phase change temperature of 53°C. In this example, the pump source heat sink is suitable for continuous light output from a laser with a power of approximately 2000 W / mK and can adapt to an environmental temperature range of -45°C to 50°C.

[0050] Please continue referring to Table 1. In Example 2, the heat spreader 1 is made of copper T1 material with a thermal conductivity of 20000 W / mK. Water is used as the internal heat transfer medium. Since the internal pressure is saturated vapor, it undergoes a phase change when heated, resulting in a dynamic phase change temperature. The housing 31 of the heat storage component is also made of copper T1 with a thermal conductivity of 400 W / mK. The internal phase change material is 58# phase change wax, and the phase change temperature of 53# phase change wax is 58°C. In this example, the pump source radiator is suitable for continuous light output from a laser with a power of approximately 3000 W / mK and can adapt to an environmental temperature range of -45°C to 50°C.

[0051] Of course, in other embodiments, higher optical power can be achieved by combining a vapor chamber with better material properties, a thermally conductive working fluid, and a phase change material, and by using the specific heat conduction and heat dissipation structure of this application, so as to meet the heat dissipation requirements of high-power laser machines.

[0052] Table 1. Pump Source Radiator Material and Parameter Information

[0053]

[0054] In summary, the fiber laser of this application embodiment has the following beneficial effects:

[0055] (1) Through integrated heat dissipation design, the laser power of air-cooled lasers can be effectively improved.

[0056] ① Higher optical power. Common air-cooled lasers can only achieve an optical power of around 500W, making it difficult to achieve an optical power of over 1000W. The core factor limiting the optical power of air-cooled lasers is the heat dissipation problem of the pump source; the embodiments of this application adopt an integrated pump and heat dissipation design, minimizing the heat transfer path, and rapidly conducting heat through a high thermal conductivity heat spreader 1 to eliminate pump heat concentration; thus, air-cooled lasers with an optical power of 2000W to 5000W can be obtained.

[0057] ② Higher ambient temperature applicability. By combining the heat spreader 1 and the phase change material, the laser can operate for a longer period at higher ambient temperatures by utilizing the phase change material's ability to store a large amount of heat in a short time while maintaining its own temperature. For example, when the ambient temperature is 50℃, during air cooling, the convective heat transfer coefficient further decreases due to the small difference between the ambient temperature and the pump's operating temperature (the convective heat transfer coefficient is positively correlated with the temperature difference). At this time, the phase change material retains its own temperature while absorbing latent heat. For instance, if a phase change material with a phase change temperature of 52℃ is selected, the phase change material will not fail at the ambient temperature, but its temperature will remain constant when heat reaches it, and it can still absorb a large amount of latent heat. This invention fully realizes these functions by combining the heat spreader 1 and optimizing the structure of the heat storage material area, combining fins and heat dissipation fins.

[0058] ③ Higher intermittent or pulsed light power. The combination of the heat storage component 3 and the heat spreader 1 also has a beneficial effect: for intermittently emitting laser devices and pulsed laser devices, the light power can be increased by 2 to 5 times through fan convection cooling and phase change material heat storage during emission, while fan convection cooling continues during intervals (including dissipating the heat stored in the phase change material and the heat from the pump housing itself). That is, through the above design, the intermittently emitting light power can reach 2000W to 70000W.

[0059] ④ Higher weight-to-power ratio. The shortened heat transfer path and improved thermal conductivity not only enhance the pump's heat dissipation capacity but also reduce the weight of the pump and the cooling system, resulting in a lower overall weight and power-to-light ratio, reducing the weight by more than 30%.

[0060] The devices applicable to the embodiments of this application include intermittently emitting lasers or pulsed fiber lasers.

[0061] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A wind-cooled radiator, characterized in that, The device includes a heat exchange plate (1), a heat dissipation unit (2), and a heat storage component (3). The heat exchange plate (1) has a cold end (12) and a heat collection end (11) for setting the heat-generating device of the laser. The heat storage component (3) and the heat dissipation unit (2) are set on the cold end (12) of the heat exchange plate (1). The heat storage component (3) includes a housing (31) with a cavity for filling phase change material. The housing (31) is attached to the surface of the cold end (12) of the heat exchange plate (1) to cover at least a portion of the cold end (12) of the heat exchange plate (1). The heat dissipation unit (2) includes a plurality of heat dissipation protrusions on the heat exchange plate (1) and the plurality of heat dissipation protrusions are spaced apart from each other. The housing (31) is provided with a plurality of clearance gaps (313), each clearance gap (313) allowing a heat dissipation protrusion to pass through.

2. The air-cooled radiator as described in claim 1, characterized in that, The cavity includes a side cavity (312) and a plurality of sub-cavities (311) separated by the clearance gap (313). The side cavity (312) is connected to each sub-cavity (311). Each sub-cavity (311) is provided with a heat-conducting rib (314) connected to the heat spreader (1).

3. The air-cooled radiator as described in claim 1, characterized in that, The heat dissipation protrusion includes a first heat dissipation fin (21) connected to the heat spreader (1), and the housing (31) is provided with a plurality of second heat dissipation fins (32) that are spaced apart and staggered with the first heat dissipation fins (21).

4. The air-cooled radiator as described in claim 1, characterized in that, The cavity is formed by a flow channel (33) provided in the shell (31) and a heat spreader (1). The shell (31) is made of metal and welded to the heat spreader (1).

5. A wind-cooled radiator as described in any one of claims 1-4, characterized in that, The upper and lower surfaces of the cold end (12) are provided with a set of heat storage components (3) and air-cooled heat dissipation parts (2). The air-cooled heat dissipation parts (2) provided on the lower surface of the cold end (12) also cover the lower surface of the heat collection end (11) of the heat spreader (1).

6. The air-cooled radiator as described in claim 1, characterized in that, The heat spreader (1) includes a heat-conducting plate one (13), a heat-conducting plate two (15) and a flow channel component (14). The heat-conducting plate one (13) and the heat-conducting plate two (15) are fixedly connected. The flow channel component (14) for filling the heat-conducting working fluid is located between the heat-conducting plate one (13) and the heat-conducting plate two (15).

7. A fiber laser, characterized in that, Includes the air-cooled heat sink as described in any one of claims 1-6, wherein the heat-generating device is a pump source.

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