Heat dissipation structure for fiber laser
By adopting the structure of internal hollow heat dissipation shell, negative pressure and thermal conductor in the fiber laser, the problems of low integration, large land area and high maintenance cost in the prior art fiber laser are solved, and more efficient Heat dissipation and lower maintenance costs.
Patent Information
- Application Number
- CN202421205349.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The existing fiber laser heat dissipation methods, especially water cooling methods, have low integration, large footprint, high maintenance costs, and water pipes are prone to aging after long-term use, which affects working efficiency.
A heat dissipation structure including an internal hollow heat dissipation shell, a negative pressure member and a heat conducting member is adopted. The heat conductor is vacuumed inside and filled with a heat transfer medium. The heat dissipation shell has a heat dissipation channel and a mounting surface for pump installation. The negative pressure member is used to attract cold air through the heat dissipation channel for cooling.
It improves the heat dissipation effect of fiber lasers, reduces the maintenance cost and failure rate of the heat dissipation structure, enhances work efficiency, and improves integration and reduces the footprint.
Smart Images
Figure CN222508343U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of heat dissipation of optical fiber lasers, and specifically relates to a heat dissipation structure for optical fiber lasers. Background Art
[0002] When the fiber laser is working, a lot of heat will be generated in the process of pump electro-optical conversion and the process of fiber absorbing pump beam and converting it into laser. The heat will cause uneven energy distribution inside the pump and drift of the output wavelength, which will affect the conversion efficiency of the energy fiber and the output performance of the fiber laser. In order to ensure the output performance of the fiber laser, the fiber laser needs to be cooled.
[0003] At present, there are usually two ways to dissipate heat for fiber lasers, namely air cooling and water cooling. Since water cooling has high cooling efficiency and good cooling effect, water cooling is more common. As for the technical solution of water cooling, it has a water cooling plate with a hollow interior and a water tank for inputting coolant into the water cooling plate. The water tank has a water pump. When dissipating heat for the fiber laser, the water pump inputs the coolant in the water tank into the cooling plate, so that the coolant circulates in the cooling plate and then returns to the water tank, so that the water cooling plate with a relatively low temperature can cool the fiber laser; however, the water cooling method requires other accessories such as water tanks and water pumps, which leads to problems such as low integration and large floor space. At the same time, after long-term use, the water pipes are prone to aging, which leads to high maintenance costs and affects the working efficiency of the fiber laser. Utility Model Content
[0004] The present application provides a heat dissipation structure for an optical fiber laser, so as to improve the integration of the heat dissipation structure and reduce the floor space occupied by the heat dissipation structure, while reducing maintenance costs and ensuring the working efficiency of the optical fiber laser.
[0005] The technical solution adopted in this application is:
[0006] A heat dissipation structure for an optical fiber laser comprises a heat dissipation shell with a hollow interior, a negative pressure member arranged on the heat dissipation shell, and a heat conductive member arranged in the heat dissipation shell, wherein the interior of the heat conductive member is vacuum and filled with a heat transfer medium, the heat dissipation shell has a heat dissipation channel and a mounting surface on the side for pump installation, the air inlet and the air outlet of the heat dissipation channel are respectively located at opposite ends of the heat dissipation shell, and the negative pressure member is located at the end where the air outlet is located, so that when the negative pressure member is working, air outside the heat dissipation shell enters the heat dissipation channel through the air inlet and flows out through the air outlet after cooling the heat conductive member.
[0007] By adopting the above technical solution, the pump of the fiber laser equipped with the heat dissipation structure of the present application is installed on the installation surface. When the pump generates heat, the heat generated by the pump is transferred to the heat dissipation shell, and the heat dissipation shell is transferred to the heat conductive part and the heat dissipation channel. Since the heat conductive part is vacuum inside and filled with heat transfer medium, the temperature of a certain part of the heat conductive part changes and the energy is quickly transferred to other positions. The negative pressure part generates suction on the heat dissipation channel, so that the cold air outside the heat dissipation shell quickly enters the heat dissipation channel through the air inlet, so that the cold air entering the heat dissipation channel cools the heat dissipation shell and the heat conductive part, and finally the air in the heat dissipation channel is discharged from the heat dissipation shell through the air outlet to achieve cooling of the pump.
[0008] Through the arrangement of the heat-conducting member, the heat-dissipating channel and the negative pressure member, the heat-dissipating structure in the present application improves the heat-dissipating effect of the pump compared with the air-cooling scheme in the prior art, so as to ensure the normal operation of the fiber laser; at the same time, compared with the water-cooling scheme in the prior art, the integration of the heat-dissipating structure is improved and the floor space of the heat-dissipating structure is reduced, and the need for circulating water to cool the pump is eliminated, so as to reduce the frequency of maintenance of the heat-dissipating structure and reduce the failure rate of the heat-dissipating structure, thereby reducing the maintenance cost of the heat-dissipating structure, and thus ensuring the working efficiency of the fiber laser. In addition, the mounting surface for installing the pump is integrated into the heat-dissipating shell, so that the heat generated by the pump is directly transferred to the heat-dissipating shell, so as to avoid the situation of heat transfer by multiple heat transfer media, thereby improving the heat transfer efficiency between the pump and the heat-dissipating shell, so that the heat generated by the pump can be quickly transferred to the heat-dissipating shell and the heat-conducting member, so as to further improve the heat-dissipating efficiency of the pump.
[0009] Optionally, the heat conducting member is a tubular structure with closed ends and is arranged on the inner side of the mounting surface.
[0010] By adopting the above technical solution, since the heat conductor is a tubular structure with closed ends, that is, the heat conductor is a straight tube without bends, so as to improve the heat conduction efficiency of the heat conductor, and then when one part of the heat conductor is heated, it can quickly transfer the heat to other parts, so as to improve the heat dissipation effect on the pump, so that the pump works at a more suitable temperature, thereby ensuring the normal operation of the fiber laser. At the same time, the heat conductor is arranged on the inner side of the installation surface to reduce the distance between the heat conductor and the pump, and further improve the heat dissipation effect of the heat conductor on the pump.
[0011] Optionally, both opposite ends of the heat dissipation shell are open, a plurality of heat dissipation fins are spaced apart in the heat dissipation shell, and each of the heat dissipation fins is extended in the direction of the opening so that two adjacent heat dissipation fins form the heat dissipation channel.
[0012] By adopting the above technical solution, a heat dissipation channel is formed between two adjacent heat dissipation fins, thereby further increasing the contact area between the inner wall of the heat dissipation channel and the cold air, thereby further improving the heat dissipation effect of the heat dissipation shell, and further improving the heat dissipation efficiency of the pump, so as to ensure the normal operation of the fiber laser.
[0013] Optionally, the heat conducting member is vertically arranged to the heat dissipating fins, so that the heat transfer direction of the heat conducting member and the direction of the airflow in the heat dissipating channel are perpendicular to each other.
[0014] By adopting the above technical solution, since the heat conductor and the heat dissipation fins are arranged vertically, the heat transfer direction of the heat conductor and the direction of the airflow in the heat dissipation channel are perpendicular to each other, so as to increase the heat dissipation effect of the cold air on the heat conductor, thereby improving the heat dissipation effect of the heat conductor on the pump, and further reducing the temperature of the pump during operation, so as to further ensure the normal operation of the fiber laser.
[0015] Optionally, the heat sink fins are provided with auxiliary heat sinks;
[0016] And / or, the heat dissipation fins are provided with heat dissipation grooves.
[0017] By adopting the above technical solution, since the heat sink fins are provided with auxiliary heat sinks and / or heat sink grooves, the contact area between the heat sink fins and the cold air is further increased, so that the heat generated by the pump can be quickly taken away by the cold air after being transferred to the heat conductor and the heat sink fins, thereby improving the heat dissipation effect of the pump.
[0018] Optionally, the heat conducting member is a plate-shaped structure arranged inside the heat dissipation shell.
[0019] By adopting the above technical solution, since the heat conductor is a plate-like structure arranged inside the heat dissipation shell, the contact area between the heat conductor and the cold air is increased, so that the heat transferred to the heat conductor by the pump can be quickly taken away by the cold air, so as to improve the heat dissipation effect of the pump, and then the pump is operated at a relatively low temperature, so as to improve the working stability of the fiber laser.
[0020] Optionally, the heat conducting member includes a first section and a second section disposed at an angle to the first section.
[0021] By adopting the above technical solution, since the heat conductive element includes a first section and a second section arranged at an angle to the first section, the area of the heat conductive element can be increased, thereby increasing the contact area between the heat conductive element and the cold air, thereby further improving the heat dissipation efficiency of the pump.
[0022] Optionally, the heat conducting component also includes sealing sections located on both sides of the first section and the second section, so that the space between the first section and the second section forms the heat dissipation channel, and the two opposite end surfaces of the heat dissipation shell are provided with notches corresponding to the space between the first section and the second section to form an air inlet and an air outlet of the heat dissipation channel.
[0023] By adopting the above technical solution, due to the setting of the sealing section, a heat dissipation channel is formed in the space between the first section and the second section, and the air inlet and the air outlet are notches arranged on the opposite end surfaces of the heat dissipation shell, so that the cold air entering the heat dissipation channel through the air inlet directly dissipates the heat of the heat conductive part, thereby improving the heat dissipation efficiency of the heat conductive part, and further improving the heat dissipation efficiency of the pump.
[0024] Optionally, both ends of the heat conducting member are in communication with the inner space of the heat dissipation shell, and the interior of the heat dissipation shell is vacuum-set and filled with a heat transfer medium.
[0025] By adopting the above technical solution, since both ends of the heat conductor are connected to the internal space of the heat dissipation shell, the interior of the heat dissipation shell is set to be vacuum and filled with heat transfer medium, the heat generated during the operation of the pump is transferred to the mounting surface, and the heat is quickly transferred along the heat dissipation shell to improve the heat dissipation efficiency of the heat dissipation shell, thereby further ensuring the heat dissipation efficiency of the pump, and further ensuring the normal operation of the fiber laser.
[0026] Optionally, a plurality of heat conducting members are arranged at intervals.
[0027] By adopting the above technical solution and arranging a plurality of heat-conducting members at intervals, the heat transfer efficiency can be further improved, so that the heat generated by the pump can be quickly taken away by the cold air, thereby further improving the heat dissipation effect of the pump.
[0028] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:
[0029] 1. The heat dissipation structure in the present application includes a heat dissipation shell with a hollow interior, a negative pressure member arranged in the heat dissipation shell, and a heat conductive member arranged in the heat dissipation shell. The interior of the heat conductive member is vacuum and filled with a heat transfer medium, so that when the temperature of a certain part of the heat conductive member changes, it can quickly transfer heat to other positions. The heat dissipation shell has a heat dissipation channel and a mounting surface for pump installation on the side. The air inlet and the air outlet of the heat dissipation channel are respectively arranged at opposite ends of the heat dissipation shell. The negative pressure member is located at the end where the air outlet is located, so that when the negative pressure member is working, the air outside the heat dissipation shell enters the heat dissipation channel through the air inlet and After the heat conductor is cooled, the heat flows out through the air outlet, so that the heat dissipation structure in the present application improves the heat dissipation effect of the pump compared with the air cooling solution in the prior art to ensure the normal operation of the fiber laser; at the same time, compared with the water cooling solution in the prior art, the integration of the heat dissipation structure is improved and the floor space of the heat dissipation structure is reduced, and the need for circulating water to cool the pump is eliminated, so as to reduce the frequency of maintenance of the heat dissipation structure and reduce the failure rate of the heat dissipation structure, thereby reducing the maintenance cost of the heat dissipation structure, and then ensuring the working efficiency of the fiber laser. In addition, the mounting surface for installing the pump is integrated into the heat dissipation shell, and then the heat generated by the pump is directly transferred to the heat dissipation shell to avoid the situation of heat transfer by multiple heat transfer media, thereby improving the heat transfer efficiency between the pump and the heat dissipation shell, so that the heat generated by the pump can be quickly transferred to the heat dissipation shell and the heat conductor, so as to further improve the heat dissipation efficiency of the pump.
[0030] 2. The heat conductor in the present application is a tubular structure with closed ends and is arranged on the inner side of the mounting surface to reduce the distance between the heat conductor and the pump, further improving the heat dissipation effect of the heat conductor on the pump; at the same time, the heat conductor is a tubular structure with closed ends, which can be understood as a straight tube without bends to improve the thermal conductivity of the heat conductor, so that when one part of the heat conductor is heated, it can quickly transfer heat to other positions to improve the heat dissipation effect on the pump, so that the pump can work at a more suitable temperature, thereby ensuring the normal operation of the fiber laser.
[0031] 3. The two opposite ends of the heat dissipation shell in the present application are both open, and a plurality of heat dissipation fins are arranged at intervals in the heat dissipation shell. Each heat dissipation fin is extended in the direction of the opening so that two adjacent heat dissipation fins form a heat dissipation channel, thereby further increasing the contact area between the inner wall of the heat dissipation channel and the cold air, so as to further improve the heat dissipation effect of the heat dissipation shell, and further improve the heat dissipation efficiency of the pump, so as to improve and ensure the normal operation of the fiber laser. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0033] Figure 1 It is a structural schematic diagram of the heat dissipation structure in one implementation mode;
[0034] Figure 2 A schematic structural diagram of the heat dissipation structure in another embodiment;
[0035] Figure 3 It is a structural schematic diagram of the heat dissipation structure in another implementation manner;
[0036] Figure 4 for Figure 3 Sectional view of AA in the middle;
[0037] Figure 5 for Figure 4 Magnified view of area A.
[0038] Reference numerals:
[0039] 1. Heat dissipation shell; 11. Mounting surface; 12. Heat dissipation channel; 13. Heat dissipation fins; 2. Negative pressure piece; 3. Heat conducting piece; 31. First section; 32. Second section; 33. Sealing section; 4. Pump; 5. Controller. DETAILED DESCRIPTION
[0040] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.
[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.
[0042] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0044] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.
[0045] Reference Figures 1 to 5 A heat dissipation structure for an optical fiber laser comprises a heat dissipation shell 1 with a hollow interior, a negative pressure member 2 arranged in the heat dissipation shell 1, and a heat conductive member 3 arranged in the heat dissipation shell 1. The heat conductive member 3 is vacuum inside and filled with a heat transfer medium. The heat dissipation shell 1 has a heat dissipation channel 12 and a mounting surface 11 on the side for mounting a pump 4. An air inlet and an air outlet of the heat dissipation channel 12 are respectively located at opposite ends of the heat dissipation shell 1. The negative pressure member 2 is located at the end where the air outlet is located, so that when the negative pressure member 2 is working, air outside the heat dissipation shell 1 enters the heat dissipation channel 12 through the air inlet and cools the heat conductive member 3 before flowing out through the air outlet.
[0046] The pump 4 of the fiber laser equipped with the heat dissipation structure of the present application is installed on the installation surface 11. When the pump 4 generates heat, the heat generated by the pump 4 is transferred to the heat dissipation shell 1, and the heat dissipation shell 1 transfers the heat to the heat conductive part 3 and the heat dissipation channel 12. Since the heat conductive part 3 is vacuum inside and filled with heat transfer medium, the temperature of a certain position of the heat conductive part 3 changes and the energy is quickly transferred to other positions. The negative pressure part 2 generates suction on the heat dissipation channel 12, so that the cold air outside the heat dissipation shell 1 quickly enters the heat dissipation channel 12 through the air inlet, so that the cold air entering the heat dissipation channel 12 cools the heat dissipation shell 1 and the heat conductive part 3, and finally the air in the heat dissipation channel 12 is discharged from the heat dissipation shell 1 through the air outlet to achieve cooling of the pump 4.
[0047] By setting the heat conductor 3, the heat dissipation channel 12 and the negative pressure member 2, the heat dissipation structure in the present application improves the heat dissipation effect of the pump 4 compared with the air cooling solution in the prior art, so as to ensure the normal operation of the fiber laser; at the same time, compared with the water cooling solution in the prior art, the integration of the heat dissipation structure is improved and the floor space of the heat dissipation structure is reduced, and the need for circulating water to cool the pump 4 is eliminated, so as to reduce the frequency of maintenance of the heat dissipation structure and reduce the failure rate of the heat dissipation structure, thereby reducing the maintenance cost of the heat dissipation structure, and then ensuring the working efficiency of the fiber laser. In addition, the mounting surface 11 for mounting the pump 4 is integrated into the heat dissipation shell 1, so that the heat generated by the pump 4 is directly transferred to the heat dissipation shell 1, so as to avoid the situation of heat transfer by multiple heat transfer media, thereby improving the heat transfer efficiency between the pump 4 and the heat dissipation shell 1, so that the heat generated by the pump 4 can be quickly transferred to the heat dissipation shell 1 and the heat conductor 3, so as to further improve the heat dissipation efficiency of the pump 4.
[0048] The present application does not specifically limit the structure of the heat conducting member 3, which may adopt any one of the following embodiments:
[0049] Implementation method 1: In this implementation method, refer to Figure 1 and Figure 2 The heat conductor 3 is a tubular structure with closed ends and is arranged on the inner side of the mounting surface 11. It can be understood that the heat conductor 3 is a straight tube structure without bending to improve the heat conduction efficiency of the heat conductor 3, so that when one part of the heat conductor 3 is heated, it can quickly transfer the heat to other parts to improve the heat dissipation effect on the pump 4, so that the pump 4 works at a more suitable temperature, thereby ensuring the normal operation of the fiber laser. At the same time, the heat conductor 3 is arranged on the inner side of the mounting surface 11 to reduce the distance between the heat conductor 3 and the pump 4, and further improve the heat dissipation effect of the heat conductor 3 on the pump 4.
[0050] Preferably, refer to Figure 1 and Figure 2 The heat dissipation shell 1 is provided with a through hole, and the heat conductive member 3 extends into the interior of the heat dissipation shell 1 through the through hole, so as to facilitate the installation of the heat conductive member 3; at the same time, the provision of the through hole can also enable the end of the heat conductive member 3 to contact the air outside the heat dissipation shell 1, so as to improve the heat dissipation effect of the heat conductive member 3, and further improve the heat dissipation effect of the pump 4.
[0051] The present application does not specifically limit the connection method between the heat conductor 3 and the through hole. Preferably, the end of the heat conductor 3 is fixedly connected to the hole wall of the through hole, that is, after the heat conductor 3 is inserted into the heat dissipation shell 1 through the through hole, the end of the heat conductor 3 is fixedly connected to the hole wall of the through hole, so as to facilitate the installation of the heat conductor 3 and increase the stability of the heat conductor 3. In other implementation examples, the end of the heat conductor 3 can also only contact the hole wall of the through hole, so as to repair or replace the heat conductor 3.
[0052] In this embodiment, the formation method of the heat dissipation channel 12 is not specifically limited. Preferably, refer to Figure 1 The two opposite ends of the heat dissipation shell 1 are both open, and a plurality of heat dissipation fins 13 are arranged in the heat dissipation shell 1 at intervals. Each heat dissipation fin 13 is extended in the direction of the opening, so that two adjacent heat dissipation fins 13 form a heat dissipation channel 12, thereby increasing the contact area between the inside of the heat dissipation shell 1 and the cold air, so as to further improve the heat dissipation effect of the heat dissipation shell 1, and further improve the heat dissipation efficiency of the pump 4, so as to improve and ensure the normal operation of the fiber laser. At the same time, the heat dissipation fins 13 can also support the inner wall of the heat dissipation shell 1 to increase the structural strength of the heat dissipation shell 1, thereby increasing the service life of the heat dissipation structure.
[0053] Better, refer to Figure 1 The heat conductor 3 and the heat dissipation fins 13 are arranged vertically, so that the heat transfer direction of the heat conductor 3 and the direction of the airflow in the heat dissipation channel 12 are perpendicular to each other, so that the cold air in the heat dissipation channel 12 can take away more heat from the heat conductor 3, so as to increase the heat dissipation effect of the cold air on the heat conductor 3, thereby improving the heat dissipation effect of the heat conductor 3 on the pump 4, and further reducing the working temperature of the pump 4, so as to further ensure the normal operation of the fiber laser.
[0054] The present application does not specifically limit the structure of the heat dissipation fins 13, and the heat dissipation fins 13 may adopt any one of the following implementation examples:
[0055] Implementation example 1. In this implementation example, the heat sink 13 is provided with an auxiliary heat sink (not shown in the accompanying drawings). The auxiliary heat sink is arranged parallel to the heat sink 13 and connected by an extension fin, so that the heat sink 13 is in an I-shape; or, the auxiliary heat sink is arranged at an angle to the heat sink and is arranged parallel to the extension direction of the heat sink 13; or, the auxiliary heat sink is in a sawtooth wave shape, so that when the air flows in the heat dissipation channel 12, the auxiliary heat sink can disturb the airflow, so as to increase the residence time of the air in the heat dissipation channel 12 and extend the flow path, so as to further increase the contact area between the heat sink 13 and the cold air, so that the heat generated by the pump 4 can be quickly taken away by the cold air after being transferred to the heat conductor 3 and the heat sink fin 13, so as to improve the heat dissipation effect of the pump 4.
[0056] Implementation Example 2. In this implementation example, the heat sink 13 is provided with a heat sink (not shown in the accompanying drawings) to further increase the contact area between the heat sink 13 and the cold air, so that the heat generated by the pump 4 can be quickly carried away by the cold air after being transferred to the heat conductor 3 and the heat sink 13, thereby improving the heat dissipation effect of the pump 4.
[0057] Implementation Example 3: In this implementation example, the heat sink 13 is provided with auxiliary heat sinks, and the heat sink 13 is provided with heat sinks to increase the contact area between the heat sink 13 and the cold air, thereby improving the heat dissipation effect on the pump 4.
[0058] In other embodiments, both opposite ends of the heat dissipation shell 1 are open, and the design of the heat dissipation fins 13 is cancelled, that is, a heat dissipation channel 12 is formed inside the heat dissipation shell 1, and the openings at both ends of the heat dissipation shell 1 form an air inlet and an air outlet, respectively.
[0059] Implementation method 2. In this implementation method, refer to Figure 3 , Figure 4 and Figure 5 The heat conductor 3 is a plate-like structure arranged inside the heat dissipation shell 1, which increases the contact area between the heat conductor 3 and the cold air, so that the heat transferred to the heat conductor 3 by the pump 4 can be quickly taken away by the cold air, so as to improve the heat dissipation effect of the pump 4, and then make the pump 4 work at a relatively low temperature, so as to improve the working stability of the fiber laser.
[0060] Preferably, refer to Figure 4 and Figure 5 The heat conducting member 3 includes a first section 31 and a second section 32 arranged at an angle to the first section 31 , thereby increasing the area of the heat conducting member 3 , thereby increasing the contact area between the heat conducting member 3 and the cold air, and further improving the heat dissipation efficiency of the pump 4 .
[0061] Better, refer to Figure 4 and Figure 5 The first section 31 and the second section 32 are both provided with multiple sections, that is, the heat conductor 3 is wavy, so as to further increase the contact area between the heat conductor 3 and the cold air, thereby further improving the heat dissipation effect on the pump 4, and further ensuring the normal operation of the fiber laser.
[0062] In this embodiment, the formation method of the heat dissipation channel 12 is not specifically limited. Preferably, refer to Figure 4 and Figure 5The heat conducting member 3 further includes sealing sections 33 located on both sides of the first section 31 and the second section 32, so that the space between the first section 31 and the second section 32 forms a heat dissipation channel 12, and the two opposite end surfaces of the heat dissipation shell 1 are provided with notches corresponding to the space between the first section 31 and the second section 32 to form an air inlet and an air outlet of the heat dissipation channel 12, so that the cold air entering the heat dissipation channel 12 through the air inlet directly dissipates the heat of the heat conducting member 3, so as to improve the heat dissipation efficiency of the heat conducting member 3, and further improve the heat dissipation efficiency of the pump 4.
[0063] Furthermore, both ends of the heat conductor 3 are connected to the internal space of the heat dissipation shell 1. The interior of the heat dissipation shell 1 is set to be vacuum and filled with heat transfer medium. Then, after the heat generated by the pump 4 during operation is transferred to the mounting surface 11, the heat extends to the heat dissipation shell 1 and is quickly transferred to improve the heat dissipation efficiency of the heat dissipation shell 1, thereby further ensuring the heat dissipation efficiency of the pump 4, and further ensuring the normal operation of the fiber laser.
[0064] In other implementation examples, the two opposite end surfaces of the heat dissipation shell 1 are open, so that the internal space of the heat dissipation shell 1 forms a heat dissipation channel 12, and the two openings respectively form an air inlet and an air outlet.
[0065] In this embodiment, the connection method between the heat conductor 3 and the heat dissipation shell 1 is not specifically limited. Preferably, the two ends of the heat conductor 3 are respectively connected to the two opposite end walls of the heat dissipation shell 1 to increase the stability of the heat conductor 3. In other embodiments, the heat conductor 3 can also be connected to the inner wall of the heat dissipation shell 1 through a fixing rod.
[0066] Preferably, the heat dissipation shell 1 is provided with a liquid filling port so as to evacuate the interior of the heat dissipation shell 1 to a vacuum state and facilitate filling of the heat transfer medium into the heat dissipation shell 1; at the same time, the liquid filling port is sealed after the heat transfer medium is filled into the heat dissipation shell 1.
[0067] The present application does not make any specific limitation on the structure of the negative pressure member 2. Preferably, the negative pressure member 2 is an axial flow variable frequency fan, and the air inlet end of the axial flow variable frequency fan faces the heat dissipation shell 1, and the air outlet end faces away from the heat dissipation shell 1, so as to ensure that the external cold air can enter the heat dissipation channel 12 through the air inlet of the heat dissipation channel 12 and be discharged through the air outlet; in other embodiments, the negative pressure member 2 can also be a fan or other structure that can generate negative pressure.
[0068] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 4 A plurality of heat-conducting members 3 are arranged at intervals to further improve the heat transfer efficiency, so that the heat generated by the pump 4 can be quickly taken away by the cold air, thereby further improving the heat dissipation effect of the pump 4.
[0069] The present application does not specifically limit the material of the heat transfer medium, which can be any one of water, ammonia, freon, fluorinated liquid, acetone, methanol, ethanol, or a mixture of two or less. Specifically, after the mounting surface 11 transfers heat to the heat conductor 3, the heat will cause the liquid inside the heat conductor 3 to evaporate, and then the liquid in the heat conductor 3 will be converted between liquid and vapor. This process is a phase-changing cycle to quickly transfer heat to other locations of the heat conductor 3, and at the same time, the heat of the heat conductor 3 is forcibly taken away by the negative pressure member 2, thereby improving the heat dissipation efficiency of the pump 4.
[0070] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 The mounting surface 11 is provided with a controller 5 for controlling the optical power of the pump 4. Thermal conductive silicone grease is applied between the controller 5 and the mounting surface 11 to improve the heat transfer efficiency between the controller 5 and the heat dissipation shell 1, thereby achieving cooling of the controller 5 at the same time, further ensuring the normal operation of the fiber laser.
[0071] In a preferred embodiment, the mounting surface 11 is provided with a plurality of temperature sensors, which are electrically connected to the negative pressure member 2 so that the temperature sensors can control the start and stop of the negative pressure member 2 according to the temperature of the mounting surface 11 to achieve energy saving.
[0072] Anything not described in this application can be achieved by adopting or drawing on existing technologies.
[0073] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.
[0074] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims
1. A heat dissipation structure for a fiber laser, characterized in that: The invention comprises a heat dissipation shell (1) with a hollow interior, a negative pressure piece (2) arranged on the heat dissipation shell (1), and a heat conducting piece (3) arranged in the heat dissipation shell (1); the heat conducting piece (3) is vacuum inside and filled with a heat transfer medium; the heat dissipation shell (1) has a heat dissipation channel (12) and a mounting surface (11) on the side for mounting a pump (4); the air inlet and the air outlet of the heat dissipation channel (12) are respectively located at two opposite ends of the heat dissipation shell (1); the negative pressure piece (2) is located at the end where the air outlet is located, so that when the negative pressure piece (2) is working, air outside the heat dissipation shell (1) enters the heat dissipation channel (12) through the air inlet and flows out through the air outlet after cooling the heat conducting piece (3).
2. A heat dissipation structure for an optical fiber laser according to claim 1, characterized in that: The heat conducting member (3) is a tubular structure with closed ends and is arranged on the inner side of the mounting surface (11).
3. A heat dissipation structure for an optical fiber laser according to claim 2, characterized in that: The two opposite ends of the heat dissipation shell (1) are both open, and a plurality of heat dissipation fins (13) are arranged at intervals in the heat dissipation shell (1). Each of the heat dissipation fins (13) is extended in the direction of the opening, so that two adjacent heat dissipation fins (13) form the heat dissipation channel (12).
4. A heat dissipation structure for an optical fiber laser according to claim 3, characterized in that: The heat conducting member (3) and the heat dissipating fins (13) are arranged perpendicularly, so that the heat transfer direction of the heat conducting member (3) and the direction of the airflow in the heat dissipating channel (12) are perpendicular to each other.
5. The heat dissipation structure for an optical fiber laser according to claim 3, characterized in that: The heat dissipation fins (13) are provided with auxiliary heat dissipation fins; And / or, the heat dissipation fins (13) are provided with heat dissipation grooves.
6. The heat dissipation structure for an optical fiber laser according to claim 1, characterized in that: The heat conducting member (3) is a plate-shaped structure arranged inside the heat dissipation shell (1).
7. The heat dissipation structure for an optical fiber laser according to claim 6, characterized in that: The heat conducting member (3) comprises a first section (31) and a second section (32) arranged at an angle to the first section (31).
8. The heat dissipation structure for an optical fiber laser according to claim 7, characterized in that: The heat conducting member (3) further comprises sealing sections (33) located on both sides of the first section (31) and the second section (32), so that the space between the first section (31) and the second section (32) forms the heat dissipation channel (12), and the opposite end surfaces of the heat dissipation shell (1) are provided with notches corresponding to the space between the first section (31) and the second section (32) to form an air inlet and an air outlet of the heat dissipation channel (12).
9. The heat dissipation structure for an optical fiber laser according to claim 8, characterized in that: Both ends of the heat conducting member (3) are in communication with the internal space of the heat dissipation shell (1); the interior of the heat dissipation shell (1) is vacuum-set and filled with a heat transfer medium.
10. The heat dissipation structure for an optical fiber laser according to claim 1, characterized in that: A plurality of heat conducting members (3) are arranged at intervals.