Laser heat dissipation device and fiber laser
By designing an internal air duct structure within the fiber laser housing, and utilizing a blower unit and a multi-stage heat dissipation unit to sequentially remove heat from the pump source and resonant cavity, the problem of high heat dissipation costs in fiber lasers is solved, achieving cost and volume reduction while improving efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANS PHOTONICS LASER TECH CO LTD
- Filing Date
- 2025-09-26
- Publication Date
- 2026-08-04
AI Technical Summary
Existing fiber lasers have high heat dissipation costs, and the use of multiple fans increases costs.
A laser heat dissipation device is designed, which adopts an air duct structure inside the box. The blower unit, the first heat dissipation unit and the second heat dissipation unit are arranged in sequence along the air duct direction. The heat from the pump source and the resonant cavity is carried away by the same blower unit, reducing the number of fans and reducing heat dissipation costs.
This effectively reduces the heat dissipation cost of fiber lasers, decreases the size of the device, and improves heat dissipation efficiency.
Smart Images
Figure CN224596018U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of laser processing technology, and in particular to a laser heat dissipation device and a fiber laser. Background Technology
[0002] Fiber lasers consist of a pump source, a resonant cavity, and a heat dissipation unit. Both the pump source and the resonant cavity generate heat during operation. The heat dissipation unit is used to improve the heat dissipation efficiency of the pump source and the resonant cavity, preventing the accumulated heat from burning out the pump source or the resonant cavity.
[0003] Currently, two fans are typically used to cool the pump source and resonant cavity separately; however, this increases the number of fans, thereby increasing the heat dissipation cost of fiber lasers. Utility Model Content
[0004] This application provides a laser heat dissipation device and a fiber laser, which can reduce the heat dissipation cost of fiber lasers.
[0005] In a first aspect, embodiments of this application provide a laser heat dissipation device, the laser heat dissipation device comprising:
[0006] The enclosure contains an air duct.
[0007] A blower unit is disposed at the air inlet port of the air duct;
[0008] A pump source, wherein the pump source is disposed in the housing;
[0009] A first heat dissipation unit is disposed at the pump source and is located inside the air duct.
[0010] A resonant cavity, wherein the resonant cavity is disposed in the housing;
[0011] The second heat dissipation unit is disposed in the resonant cavity and located inside the air duct. The blower unit, the first heat dissipation unit, and the second heat dissipation unit are arranged sequentially along the ventilation direction of the air duct.
[0012] In some possible implementations of the first aspect, the air duct includes: sequentially connected along the ventilation direction of the air duct.
[0013] The first channel, wherein the blower unit is disposed at the air inlet of the first channel, and the first heat dissipation unit is located inside the first channel;
[0014] The second channel, in which the second heat dissipation unit is located, has a cross-sectional area smaller than that of the first channel.
[0015] In some possible implementations of the first aspect, the air duct further includes:
[0016] A third channel, the two ends of which are connected to the first channel and the second channel respectively, and the cross-sectional area of the third channel is smaller than that of the second channel.
[0017] In some possible implementations of the first aspect, the cross-sectional area of the end of the first channel near the third channel gradually decreases in the direction of proximity to the third channel, and the cross-sectional area of the end of the second channel near the third channel gradually decreases in the direction of proximity to the third channel.
[0018] In some possible implementations of the first aspect, the first heat dissipation unit includes:
[0019] The heat dissipation fins are disposed on the pump source and located within the air duct.
[0020] In some possible implementations of the first aspect, the first heat dissipation unit further includes:
[0021] A heat pipe is disposed in the pump source and located within the air duct, and heat dissipation fins are disposed in the heat pipe.
[0022] In some possible implementations of the first aspect, the heat pipe is an ultrathermal conduit.
[0023] In some possible embodiments of the first aspect, the laser heat dissipation device further includes:
[0024] A heat-conducting plate is disposed on the pump source, and a heat pipe is disposed on the side of the heat-conducting plate away from the pump source.
[0025] In some possible implementations of the first aspect, the blower unit and the pump source are respectively disposed on adjacent sides at the same height of the housing, and the blower unit and the pump source are disposed in a one-to-one correspondence.
[0026] Secondly, embodiments of this application provide a fiber laser, which includes a laser heat dissipation device as described in any of the above technical solutions.
[0027] The laser heat dissipation device and fiber laser provided in this application embodiment have an air duct inside the housing. A blower unit is located at the air inlet of the air duct to blow air from outside the housing into the air duct. A pump source is located in the housing, and a first heat dissipation unit is located in the pump source and inside the air duct. The heat generated by the pump source can be transferred to the first heat dissipation unit through heat conduction, and the heat of the first heat dissipation unit can be carried away by the air in the air duct. A resonant cavity is located in the housing, and a second heat dissipation unit is located in the resonant cavity and inside the air duct. The heat generated by the resonant cavity can be transferred to the second heat dissipation unit through heat conduction, and the heat of the second heat dissipation unit can be carried away by the air in the air duct. The blower unit, the first heat dissipation unit, and the second heat dissipation unit are arranged sequentially along the ventilation direction of the air duct so that air is blown into the air duct by the same blower unit to sequentially carry away the heat on the first and second heat dissipation units, reducing the number of blower units and lowering the heat dissipation cost of the laser heat dissipation device. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the structure of an embodiment of the laser heat dissipation device of this application;
[0030] Figure 2 This is a cross-sectional view of an embodiment of the laser heat dissipation device of this application;
[0031] Figure 3 for Figure 1 A schematic diagram of the internal structure of the laser heat dissipation device.
[0032] Explanation of icon numbers:
[0033] 1. Housing; 11. Air duct; 111. First channel; 112. Second channel; 113. Third channel; 2. Blower unit; 3. Pump source; 4. First heat dissipation unit; 41. Heat dissipation fins; 42. Heat pipe; 5. Resonant cavity; 6. Second heat dissipation unit; 7. Heat conduction plate.
[0034] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0037] It should be understood that the terms "length", "width", "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 application 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 application.
[0038] It should be understood that the term "and / or" as used in this application specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0039] Furthermore, 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 application, "multiple" means two or more, unless otherwise explicitly specified.
[0040] This application provides a laser heat dissipation device and a fiber laser to solve the technical problem of high heat dissipation cost of fiber lasers.
[0041] In the embodiments of this application, such as Figures 1 to 3As shown, the laser heat dissipation device includes a housing 1, a blower unit 2, a pump source 3, a first heat dissipation unit 4, a resonant cavity 5, and a second heat dissipation unit 6. An air duct 11 is provided inside the housing 1, and the blower unit 2 is located at the air inlet of the air duct 11. The pump source 3 and the resonant cavity 5 are both located in the housing 1. The first heat dissipation unit 4 is located within the pump source 3 and is situated within the air duct 11. The second heat dissipation unit 6 is located within the resonant cavity 5 and is situated within the air duct 11. The blower unit 2, the first heat dissipation unit 4, and the second heat dissipation unit 6 are arranged sequentially along the ventilation direction of the air duct 11.
[0042] The housing 1 has openings at opposite ends along its length, one of which is an air inlet and the other an air outlet. The side of the housing 1 adjacent to the air inlet also has an opening, allowing the pump source 3 to be positioned outside the housing 1, while the first heat dissipation unit 4 can extend into the housing 1 through the opening. The opposite side of the housing 1 where the pump source 3 is located also has an opening, allowing the resonant cavity 5 to be positioned outside the housing 1, while the second heat dissipation unit 6 can extend into the housing 1 through the opening. The pump source 3 and the resonant cavity 5 are staggered, allowing the blower unit 2, the first heat dissipation unit 4, and the second heat dissipation unit 6 to be arranged sequentially along the ventilation direction of the air duct 11.
[0043] After the first heat dissipation unit 4 and the second heat dissipation unit 6 extend into the housing 1 through the opening, the pump source 3 and the resonant cavity 5 can block the opening to seal the housing 1, thereby forming the air duct 11.
[0044] In this embodiment, the blower unit 2 can be a fan.
[0045] In this embodiment, the housing 1 is provided with an air duct 11, and a blower unit 2 is provided at the air inlet of the air duct 11. The blower unit 2 is used to blow air from outside the housing 1 into the air duct 11. A pump source 3 is provided in the housing 1, and a first heat dissipation unit 4 is provided in the pump source 3 and located in the air duct 11. The heat generated by the pump source 3 can be transferred to the first heat dissipation unit 4 through heat conduction, and the heat of the first heat dissipation unit 4 can be carried away by the air in the air duct 11. A resonant cavity 5 is provided in the housing 1, and a second heat dissipation unit 6 is provided in the resonant cavity 5. The heat dissipation unit 6 is located inside the air duct 11. The heat generated by the resonant cavity 5 can be transferred to the second heat dissipation unit 6 through heat conduction. The heat of the second heat dissipation unit 6 can then be carried away by the air inside the air duct 11. The blower unit 2, the first heat dissipation unit 4, and the second heat dissipation unit 6 are arranged sequentially along the ventilation direction of the air duct 11 so that air can be blown into the air duct 11 through the same blower unit 2, thereby carrying away the heat on the first heat dissipation unit 4 and the second heat dissipation unit 6 in sequence. This reduces the number of blower units 2, lowers the heat dissipation cost of the laser heat dissipation device, and also reduces the size of the laser heat dissipation device.
[0046] In this embodiment, the temperature of the first heat dissipation unit 4 is lower than the temperature of the second heat dissipation unit 6, so that the temperature of the air passing through the first heat dissipation unit 4 is lower than the temperature of the second heat dissipation unit 6, so as to continue to remove the heat from the second heat dissipation unit 6 and dissipate heat from the second heat dissipation unit 6.
[0047] In one embodiment, such as Figure 2 and Figure 3 As shown, the air duct 11 includes a first channel 111 and a second channel 112 connected sequentially along the ventilation direction of the air duct 11. A blower unit 2 is disposed at the air inlet of the first channel 111, and a first heat dissipation unit 4 is located within the first channel 111. A second heat dissipation unit 6 is located within the second channel 112, and the cross-sectional area of the second channel 112 is smaller than the cross-sectional area of the first channel 111.
[0048] When the air blown into the air duct 11 by the blower unit 2 passes through the first channel 111 and reaches the second channel 112, some of it will leak. Therefore, the cross-sectional area of the second channel 112 is smaller than that of the first channel 111, which can ensure that the air flow rate in the second channel 112 is within the preset range, thereby improving the heat dissipation efficiency and reducing the size of the laser heat dissipation device.
[0049] In one embodiment, such as Figure 2 and Figure 3 As shown, the air duct 11 also includes a third channel 113, with its two ends connected to the first channel 111 and the second channel 112, respectively. The cross-sectional area of the third channel 113 is smaller than that of the second channel 112. This smaller cross-sectional area increases the airflow velocity within the third channel 113. When the air passing through the third channel 113 passes through the second channel 112, the airflow velocity decreases. This variation in the cross-sectional areas of the third channel 113 and the second channel 112 allows the airflow velocity within the second channel 112 to be controlled within a preset range, thereby improving the heat dissipation efficiency of the second heat dissipation unit 6.
[0050] In one embodiment, such as Figure 2 As shown, the cross-sectional area of the end of the first channel 111 near the third channel 113 gradually decreases along the direction of the third channel 113, and the cross-sectional area of the end of the second channel 112 near the third channel 113 also gradually decreases along the direction of the third channel 113. This allows air to flow smoothly from the first channel 111 to the third channel 113, and then from the third channel 113 to the second channel 112, reducing airflow resistance.
[0051] In one embodiment, such as Figure 2 As shown, the second heat dissipation unit 6 can extend into the third channel 113.
[0052] In one embodiment, such as Figure 2 and Figure 3 As shown, the first heat dissipation unit 4 includes heat dissipation fins 41, which are disposed on the pump source 3 and located within the air duct 11. The heat generated by the pump source 3 is transferred to the heat dissipation fins 41 through heat transfer, and then the heat dissipation fins 41 exchange heat with the air in the air duct 11, increasing the contact area between the heat dissipation fins 41 and the air, thereby improving the heat dissipation efficiency.
[0053] In one embodiment, such as Figure 2 and Figure 3 As shown, the first heat dissipation unit 4 also includes a heat pipe 42, which is disposed within the pump source 3 and the air duct 11. Heat dissipation fins 41 are disposed on the heat pipe 42. Heat generated by the pump source 3 is transferred to the heat pipe 42 via heat transfer, and the heat pipe 42 then transfers the heat to the heat dissipation fins 41 via heat transfer, thereby dissipating heat from the pump source 3. Since coolant can flow into the heat pipe 42, the heat dissipation efficiency of the pump source 3 can be improved.
[0054] In this embodiment, the heat pipe 42 is disposed inside the heat dissipation fin 41 so that the heat pipe 42 can make full contact with the heat dissipation fin 41, thereby improving the efficiency of heat transfer.
[0055] In one embodiment, the heat pipe 42 is an ultra-high heat pipe, which is a high-efficiency heat dissipation element designed based on the principle of phase change heat transfer. It can quickly transfer heat from the pump source 3 to the heat dissipation fins 41 to improve the heat dissipation efficiency of the pump source 3.
[0056] In one embodiment, such as Figure 2 and Figure 3 As shown, the laser heat dissipation device also includes a heat-conducting plate 7, which is disposed on the pump source 3, and a heat pipe 42 is disposed on the side of the heat-conducting plate 7 away from the pump source 3. The heat-conducting plate 7 can facilitate the placement of the pump source 3 and the heat pipe 42, and can also block the opening of the housing 1 to form an air duct 11.
[0057] In one embodiment, the second heat dissipation unit 6 may be a heat-conducting sheet, a heat-conducting block, or may have the same structure as the first heat dissipation unit 4.
[0058] In one embodiment, such as Figure 1 and Figure 3 As shown, the blower unit 2 and the pump source 3 are respectively set on adjacent sides at the same height of the housing 1. The blower unit 2 and the pump source 3 are set in a one-to-one correspondence, which can further improve the heat dissipation efficiency of the laser heat dissipation device.
[0059] Furthermore, this application also provides a fiber laser, which includes a laser heat dissipation device. The specific structure of the laser heat dissipation device is as described in the above embodiments. Since the fiber laser adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments.
[0060] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A laser heat dissipation device, characterized in that, The laser heat dissipation device includes: The enclosure contains an air duct. A blower unit is disposed at the air inlet port of the air duct; A pump source, wherein the pump source is disposed in the housing; A first heat dissipation unit is disposed at the pump source and is located inside the air duct. A resonant cavity, wherein the resonant cavity is disposed in the housing; The second heat dissipation unit is disposed in the resonant cavity and located inside the air duct. The blower unit, the first heat dissipation unit, and the second heat dissipation unit are arranged sequentially along the ventilation direction of the air duct.
2. The laser heat dissipation device as described in claim 1, characterized in that, The air duct includes the following components connected sequentially along the ventilation direction: The first channel, wherein the blower unit is disposed at the air inlet of the first channel, and the first heat dissipation unit is located inside the first channel; The second channel, in which the second heat dissipation unit is located, has a cross-sectional area smaller than that of the first channel.
3. The laser heat dissipation device as described in claim 2, characterized in that, The air duct also includes: A third channel, the two ends of which are connected to the first channel and the second channel respectively, and the cross-sectional area of the third channel is smaller than that of the second channel.
4. The laser heat dissipation device as described in claim 3, characterized in that, The cross-sectional area of the first channel near the third channel gradually decreases along the direction of approaching the third channel, and the cross-sectional area of the second channel near the third channel gradually decreases along the direction of approaching the third channel.
5. The laser heat dissipation device as described in claim 1, characterized in that, The first heat dissipation unit includes: The heat dissipation fins are disposed on the pump source and located within the air duct.
6. The laser heat dissipation device as described in claim 5, characterized in that, The first heat dissipation unit further includes: A heat pipe is disposed in the pump source and located within the air duct, and heat dissipation fins are disposed in the heat pipe.
7. The laser heat dissipation device as described in claim 6, characterized in that, The heat pipe is an ultra-high-temperature heat pipe.
8. The laser heat dissipation device as described in claim 6, characterized in that, The laser heat dissipation device also includes: A heat-conducting plate is disposed on the pump source, and a heat pipe is disposed on the side of the heat-conducting plate away from the pump source.
9. The laser heat dissipation device as described in claim 1, characterized in that, The blower unit and the pump source are respectively located on adjacent sides at the same height of the housing, with each blower unit and pump source corresponding to the other.
10. A fiber laser, characterized in that, The fiber laser includes the laser heat dissipation device as described in any one of claims 1 to 9.