Radiating fin, radiator and electronic equipment
By designing a coordinated angle improvement component on the heat dissipation fins of the laptop, the angle between the fluid velocity gradient and the temperature gradient are improved, and the heat transfer efficiency is improved. The problem of low heat transfer efficiency of the straight fin is solved, and the heat dissipation effect and equipment life are enhanced.
Patent Information
- Application Number
- CN202311850794.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-07-08
AI Technical Summary
The straight fins of existing laptops have poor heat dissipation effect and low heat transfer efficiency, which leads to excessive temperatures of the chip and the body, affecting performance and life, and does not conform to the principle of field coordination.
The synergistic angle improvement component is adopted, including multiple synergistic angle improvement structures, designed into a tree-like arrangement, forming a streamlined structure, reducing the angle between the fluid velocity gradient and the temperature gradient, enhancing air flow, avoiding flow interference and blending, and improving heat dissipation ability.
It effectively improves the angle between the fluid velocity gradient and the temperature gradient of the surface of the air and the heat dissipation fins, improves heat transfer efficiency, enhances convective heat transfer effect, ensures the system air volume, reduces flow resistance, and extends the equipment life.
Smart Images
Figure CN120282404A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of heat dissipation for electronic devices, and particularly to a heat dissipation fin, a radiator, and an electronic device. Background Art
[0002] A laptop is a portable electronic device with high performance, high integration, and multiple functions. With the development of information technology, the processing power and operating speed of laptops have been continuously improved, which also brings greater heat generation and heat dissipation requirements. The heat dissipation system of a laptop is crucial for ensuring its normal operation and extending its service life. The heat dissipation system of a laptop usually consists of a fan and heat dissipation fins. The fan is responsible for blowing cooling air into the heat dissipation fins, and the heat dissipation fins are responsible for transferring heat from the chip and the body to the air to achieve convective heat dissipation. The design and performance of the heat dissipation fins directly affect the efficiency and effect of the heat dissipation system.
[0003] Currently, the heat dissipation fins commonly used in the laptop industry are flat fins, which have a simple structure and are easy to manufacture and install. However, the heat dissipation effect of flat fins is not ideal, and there are mainly the following problems:
[0004] The surface area of flat fins is small, and the heat transfer efficiency is low. They cannot make full use of the cooling capacity of air, resulting in insufficient heat dissipation, too high temperatures of the chip and the body, and affecting their performance and service life. The angle between the fluid velocity gradient and the temperature gradient of flat fins is relatively large, generally 90°, which does not conform to the field synergy principle, that is, the smaller the angle between the fluid velocity gradient and the temperature gradient, the better the heat dissipation effect. This is because when the angle between the fluid velocity gradient and the temperature gradient is small, the relative movement direction of the fluid and the surface of the heat dissipation fins is more consistent, reducing the deviation degree between the fluid velocity gradient and the temperature gradient and improving the heat transfer efficiency. Summary of the Invention
[0005] This application provides a heat dissipation fin, a radiator, and an electronic device, and this heat dissipation fin is used to improve the heat dissipation efficiency and flow resistance.
[0006] To achieve the above object, the embodiments of this application adopt the following technical solutions:
[0007] In a first aspect, a heat dissipation fin is provided. The heat dissipation fin is applied to an electronic device and includes: a fin plate body having an air inlet end and an air outlet end; a collaborative angle improvement component disposed on a first side of the fin plate body, the collaborative angle improvement component including a collaborative angle improvement portion; the collaborative angle improvement portion including a plurality of collaborative angle improvement structures arranged from the air inlet end to the air outlet end. The plurality of collaborative angle improvement structures include a first collaborative angle improvement structure and two second collaborative angle improvement structures. The first collaborative angle improvement structure is disposed near the air inlet end of the collaborative angle improvement portion, and the first collaborative angle improvement structure can form a first collaborative angle improvement area on a side of the first collaborative angle improvement structure near the air outlet end; two second-order collaborative angle structure arrangement areas are respectively disposed on both sides of the first collaborative angle improvement area in the width direction of the fin plate body, and the plurality of second collaborative angle improvement structures are respectively disposed in the two second-order collaborative angle structure arrangement areas; the remaining collaborative angle improvement structures are located between the second collaborative angle improvement structures and the air outlet end.
[0008] The heat dissipation fin provided by the embodiment of the present application can effectively improve the included angle between the fluid velocity gradient and the temperature gradient on the surface of the heat dissipation fin, improve the efficiency of heat transfer, and thus enhance the effect of convective heat transfer. The plurality of collaborative angle improvement structures form a plurality of collaborative angle improvement areas on the surface of the heat dissipation fin, reduce the deviation degree between the fluid velocity gradient and the temperature gradient, and reduce the collaborative angle. In addition, a special arrangement method of the collaborative angle improvement structure is adopted, that is, there is only one first collaborative angle improvement structure at the air inlet end, and it gradually bifurcates in the direction of the air outlet end, and a plurality of other collaborative angle improvement structures are arranged. The plurality of collaborative angle improvement structures adopt a dendritic arrangement method. Overall, a streamline-like structure is formed at one end near the air inlet end, enabling air to flow more smoothly over the surface of the heat dissipation fin, avoiding an increase in flow resistance, ensuring the system air volume, and improving the heat dissipation capacity.
[0009] In one embodiment, the total dimension of the plurality of second collaborative angle improvement structures in the width direction of the fin plate body located in the same second-order collaborative angle structure arrangement area is less than or equal to 1 / 3 of the dimension of the second-order collaborative angle structure arrangement area in the width direction of the fin plate body. By ensuring the distance between the plurality of second collaborative angle improvement structures located in the same second-order collaborative angle structure arrangement area, flow interference and mixing between them can be avoided, thereby maintaining the independence and effectiveness of each second collaborative angle improvement structure.
[0010] In one embodiment, when the dimension of the second collaborative angle improvement structure in the width direction of the fin plate body exceeds 1 / 3 of the dimension of the second-order collaborative angle structure arrangement area in the width direction of the fin plate body, one second collaborative angle improvement structure is arranged in each second-order collaborative angle structure arrangement area. By arranging one second collaborative angle improvement structure in each second-order collaborative angle structure arrangement area, it can be ensured that
[0011] When the sizes of each second co - angle improvement structure are relatively large, flow interference and mixing between them are avoided, thereby improving the natural convection heat dissipation performance of the heat dissipation fins.
[0012] In one embodiment, the second co - angle improvement structure can form a second co - angle improvement area on the side close to the air outlet end of the second co - angle improvement structure. On both sides in the width direction of the second co - angle improvement area, third - order co - angle structure arrangement areas are respectively set, and the third - order co - angle structure arrangement areas do not coincide with the first co - angle improvement area and the second co - angle improvement area; the plurality of co - angle improvement structures further include a plurality of third co - angle improvement structures, and the plurality of third co - angle improvement structures are respectively arranged in each third - order co - angle structure arrangement area.
[0013] In one embodiment, the total size in the width direction of the fin plate body of the multiple third co - angle improvement structures located in the same third - order co - angle structure arrangement area is less than or equal to 1 / 3 of the size in the width direction of the fin plate body of the third - order co - angle structure arrangement area.
[0014] In one embodiment, when the size in the width direction of the third co - angle improvement structure exceeds 1 / 3 of the size in the width direction of the fin plate body of the third - order co - angle structure arrangement area, one third co - angle improvement structure is arranged in each third - order co - angle structure arrangement area; when the size in the width direction of the third co - angle improvement structure exceeds the size in the width direction of the fin plate body of the third - order co - angle structure arrangement area, no third co - angle improvement structure is arranged.
[0015] In one embodiment, the co - angle improvement component includes a plurality of co - angle improvement parts, and the plurality of co - angle improvement parts are arranged in sequence along the length direction of the fin plate body.
[0016] In one embodiment, between the end of the first co - angle improvement area and the third - order co - angle structure arrangement area adjacent to the first co - angle improvement area, a type - 2 arrangement area is formed. When the size in the width direction of the fin plate body of the first co - angle improvement structure of the co - angle improvement part adjacent to the air outlet end of the co - angle improvement part is less than the size in the width direction of the fin plate body of the type - 2 arrangement area, the first co - angle improvement structure of the co - angle improvement part adjacent to the air outlet end of the co - angle improvement part is arranged in the type - 2 arrangement area.
[0017] In one embodiment, there are a plurality of co - angle improvement components, and the plurality of co - angle improvement components are arranged in sequence along the width direction of the fin plate body.
[0018] In one embodiment, the total size in the width direction of the multiple first co - angle improvement structures is less than or equal to 1 / 3 of the size in the width direction of the fin plate body.
[0019] In one embodiment, when the size of the first cooperative angle improvement structure in the width direction of the fin plate body exceeds 1 / 3 of the size in the width direction of the fin plate body, only one cooperative angle improvement component is arranged.
[0020] In one embodiment, multiple cooperative angle improvement structures are each one of a circular convex hull, an elliptical convex hull, a rhombic convex hull, and a water droplet-shaped convex hull, or a combination of multiple of a circular convex hull, an elliptical convex hull, a rhombic convex hull, and a water droplet-shaped convex hull.
[0021] In one embodiment, the surfaces of the circular convex hull, the elliptical convex hull, the rhombic convex hull, and the water droplet-shaped convex hull that are away from the fin plate body are smoothly transitioned.
[0022] In a second aspect of the present application, a radiator is provided. The radiator includes a housing and a plurality of heat dissipation fins spaced apart and installed in the housing. The housing has an air inlet and an air outlet. The heat dissipation fins extend in the direction from the air inlet to the air outlet. Among them, the heat dissipation fins are the above-mentioned heat dissipation fins.
[0023] In a third aspect of the present application, an electronic device is provided. The electronic device includes a radiator, and the radiator is the above-mentioned radiator.
[0024] Through the above technical solutions, since the radiator includes the above-mentioned heat dissipation fins, it at least has all the beneficial effects of the heat dissipation fins, which will not be elaborated here. Since the electronic device includes the above-mentioned heat dissipation fins, it at least has all the beneficial effects of the heat dissipation fins, which will not be elaborated here. Description of the Drawings
[0025] Figure 1 It is a structural diagram of the heat dissipation fins provided by the embodiment of the present application after the first cooperative angle improvement structure is set to form two second-order cooperative angle arrangement areas;
[0026] Figure 2 It is a structural diagram of the heat dissipation fins provided by the embodiment of the present application after the second cooperative angle improvement structure is arranged;
[0027] Figure 3 It is a structural diagram of the heat dissipation fins provided by the embodiment of the present application after the second cooperative angle improvement structure is set to form two third-order cooperative angle arrangement areas;
[0028] Figure 4 It is a structural diagram of the heat dissipation fins provided by the embodiment of the present application after each cooperative angle improvement structure is arranged;
[0029] Figure 5 It is a front view of another embodiment of the heat dissipation fins provided by the embodiment of the present application;
[0030] Figure 6 It is Figure 5 a left view of
[0031] Figure 7 The velocity-temperature gradient co-angle diagrams in four cases where the heat dissipation fins provided by the embodiments of the present application are arranged with first- to fourth-order co-angle improvement structures;
[0032] Figure 8 For Figure 5 The comparison diagram of the velocity-temperature gradient co-angle between the heat dissipation fins provided by the embodiments in
[0033] Figure 9 The velocity-temperature gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using a circular convex hull;
[0034] Figure 10 The velocity-pressure gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using a circular convex hull;
[0035] Figure 11 The velocity-temperature gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using a rhombic convex hull;
[0036] Figure 12 The velocity-pressure gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using a rhombic convex hull;
[0037] Figure 13 The velocity-temperature gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using an elliptical convex hull;
[0038] Figure 14 The velocity-pressure gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using an elliptical convex hull;
[0039] Figure 15 The velocity-temperature gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using a teardrop-shaped convex hull;
[0040] Figure 16 The velocity-pressure gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using a teardrop-shaped convex hull;
[0041] Figure 17 The structural diagram of the co-angle improvement structure provided by the embodiments of the present application using a teardrop-shaped convex hull and arranging the fin plate body fully;
[0042] Figure 18 The velocity-temperature gradient co-angle diagram of the co-angle improvement structure provided by the embodiments of the present application using a teardrop-shaped convex hull and arranging the fin plate body fully;
[0043] Figure 19 The structural diagram of the co-angle improvement structure provided by the embodiments of the present application using a combination of teardrop-shaped convex hull - circular convex hull - rhombic convex hull and arranging the fin plate body fully;
[0044] Figure 20 The collaborative angle improvement structure provided by the embodiment of the present application adopts a combination of a water-drop-shaped convex hull, a circular convex hull, and a rhombic convex hull, and arranges a velocity-temperature gradient collaborative angle diagram of a finned plate body filled with them.
[0045] Among them, the meanings represented by each attached drawing reference numeral are as follows:
[0046] 10. Finned plate body; 11. First collaborative angle improvement structure; 111. First collaborative angle improvement area; 12. Second collaborative angle improvement structure; 121. Second collaborative angle improvement area; 13. Third collaborative angle improvement structure; 131. Third collaborative angle improvement area.
[0047] 20. Second-order collaborative angle structure arrangement area;
[0048] 30. Third-order collaborative angle structure arrangement area;
[0049] 40. Class 2 arrangement area; Detailed implementation manners
[0050] In order to make the purpose, technical solutions, and advantages of the present application clearer, the following will further describe in detail the implementation manners of the present application with reference to the accompanying drawings.
[0051] It should be understood that in the description of the present application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the present application.
[0052] The terms "first", "second", "third", "fourth", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. For example, the first pushing part and the second pushing part are only for distinguishing different pushing parts, and do not limit their sequence. The first pushing part can also be named the second pushing part, and the second pushing part can also be named the first pushing part, without departing from the scope of the described embodiments. And the terms "first", "second", "third", "fourth", etc. do not necessarily limit that the indicated features are different.
[0053] In the embodiments of the present application, unless otherwise clearly specified and limited, terms such as "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise clearly and specifically limited.
[0054] In the embodiments of the present application, "and / or" is merely an association relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.
[0055] It should be noted that in the embodiments of the present application, words such as "in one embodiment", "exemplarily", and "for example" are used to give examples, illustrations, or explanations. Any embodiment or design solution described as "in one embodiment", "exemplarily", or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "in one embodiment", "exemplarily", and "for example" aims to present relevant concepts in a specific manner.
[0056] In order to make the purpose, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0057] The heat dissipation system of a laptop is crucial for ensuring its normal operation and extending its service life. The heat dissipation system of a laptop usually consists of a fan and heat dissipation fins. The fan is responsible for blowing cooling air into the heat dissipation fins, and the heat dissipation fins are responsible for transferring heat from the chip and the body to the air to achieve convective heat dissipation. The design and performance of the heat dissipation fins directly affect the efficiency and effect of the heat dissipation system.
[0058] Currently, the heat dissipation fins commonly used in the laptop industry are flat fins, which have a simple structure and are easy to manufacture and install. However, the heat dissipation effect of flat fins is not ideal, and there are mainly the following problems:
[0059] The surface area of the straight fin is small and the heat transfer efficiency is low, which cannot make full use of the cooling capacity of the air, resulting in insufficient heat dissipation, too high temperatures of the chip and the body, and affecting its performance and lifespan. The angle between the fluid velocity gradient and the temperature gradient of the straight fin is large, generally 90°, which does not conform to the field synergy principle, that is, the smaller the angle between the fluid velocity gradient and the temperature gradient, the better the heat dissipation effect. This is because when the angle between the fluid velocity gradient and the temperature gradient is small, the relative movement direction of the fluid and the surface of the heat dissipation fin is more consistent, reducing the deviation degree between the fluid velocity gradient and the temperature gradient and improving the heat transfer efficiency.
[0060] Specifically, as shown in Figures 1 to 4 In the embodiments of the present application, the heat dissipation fin is used for an electronic device. Among them, the electronic device can be a laptop computer, a smart phone, a camera, a smart watch, etc. The heat dissipation fin is a heat dissipation device used to increase the surface area of the radiator, thereby improving the heat transfer efficiency and achieving the purpose of heat dissipation. The heat dissipation fin in the embodiments of the present application includes a fin plate body 10 and a synergy angle improvement component. The fin plate body 10 has an air inlet end and an air outlet end; the synergy angle improvement component is arranged on the first side of the fin plate body 10, and the synergy angle improvement component includes a synergy angle improvement part; the synergy angle improvement part includes a plurality of synergy angle improvement structures, and the plurality of synergy angle improvement structures are arranged in sequence from the air inlet end to the air outlet end. The plurality of synergy angle improvement structures include a first synergy angle improvement structure 11 and two second synergy angle improvement structures 12. The first synergy angle improvement structure 11 is arranged near the air inlet end of the synergy angle improvement part. The first synergy angle improvement structure 11 can form a first synergy angle improvement area 111 on the side close to the air outlet end of the first synergy angle improvement structure 11; two second-order synergy angle structure arrangement areas 20 are respectively arranged on both sides of the first synergy angle improvement area 111 in the width direction of the fin plate body 10, and a plurality of second synergy angle improvement structures 12 are respectively arranged in the two second-order synergy angle structure arrangement areas 20; the remaining synergy angle improvement structures are located between the second synergy angle improvement structures 12 and the air outlet end.
[0061] It should be noted that the fin plate body 10 is the main part of the heat dissipation fins, usually made of a heat-conducting material, having an air inlet end and an air outlet end. The air inlet end corresponds to the air inlet of the radiator, and the air outlet end corresponds to the air outlet of the radiator, and is used for heat dissipation. The co-angle improvement component is an accessory part of the heat dissipation fins, arranged on one side of the fin plate body 10, and is used to increase the heat transfer surface area of the heat dissipation fins, improve air flow and turbulence, and improve the heat dissipation efficiency. Specifically, the co-angle improvement part is a component of the co-angle improvement component, including a plurality of co-angle improvement structures arranged along the length direction of the fin plate body 10. The co-angle improvement structure is a component of the co-angle improvement part, and can be in the shape of a circular convex hull, an oval convex hull, a diamond convex hull, a water droplet convex hull, etc., and is used to form a co-angle improvement area, increase the heat transfer surface area of the heat dissipation fins, improve air flow and turbulence, and improve the heat dissipation efficiency. The first co-angle improvement structure 11 is one of the multiple co-angle improvement structures, arranged at a position close to the air inlet end of the co-angle improvement part, and can form a first co-angle improvement area 111 on the side close to its air outlet end. Formed by the first co-angle improvement structure 11, on both sides in the width direction of the fin plate body 10, two second-order co-angle structure arrangement areas 20 are respectively arranged, see Figure 1 as shown. The second-order co-angle structure arrangement area 20 is a kind of co-angle structure arrangement area, separated from the first co-angle improvement area 111, and is used to arrange the second co-angle improvement structure 12. The second co-angle improvement structure 12 is a kind of co-angle improvement structure, arranged in the second-order co-angle structure arrangement area 20, and can form a second co-angle improvement area 121 on the side close to the air outlet end. Among them, the naming rule of the multiple co-angle improvement structures can be that each column from the air inlet end to the air outlet end of the fin plate body is the first order. For example, the first co-angle improvement structure can be called the first order, the second co-angle improvement structure can be called the second order, the third co-angle improvement structure can be called the third order, the first co-angle improvement structure of the next co-angle improvement part is called the fourth order, the second co-angle improvement structure of the next co-angle improvement part is called the fifth order, and so on.
[0062] The heat dissipation fins in the embodiment of the present application can effectively improve the included angle between the fluid velocity gradient and the temperature gradient on the surface of the heat dissipation fins, improve the efficiency of heat transfer, and thus enhance the effect of convective heat transfer. The multiple co-angle improvement structures form multiple co-angle improvement areas on the surface of the heat dissipation fins, reduce the deviation degree between the fluid velocity gradient and the temperature gradient, and reduce the co-angle. In addition, a special arrangement method of the co-angle improvement structure is adopted, that is, there is only one first co-angle improvement structure 11 at the air inlet end, and it gradually bifurcates in the direction of the air outlet end, and a plurality of other co-angle improvement structures are arranged. The multiple co-angle improvement structures adopt an arrangement method such as a dendritic shape. Overall, a streamline-like structure is formed at one end close to the air inlet end, so that air can flow more smoothly through the surface of the heat dissipation fins, avoid increasing the flow resistance, ensure the system air volume, and improve the heat dissipation capacity.
[0063] To ensure the distance between multiple second collaborative angle improvement structures 12 located in the same second-order collaborative angle structure arrangement area 20, the total dimension of the multiple second collaborative angle improvement structures 12 located in the same second-order collaborative angle structure arrangement area 20 in the width direction of the fin plate body 10 is less than or equal to 1 / 3 of the dimension of the second-order collaborative angle structure arrangement area 20 in the width direction of the fin plate body 10. By ensuring the distance between the multiple second collaborative angle improvement structures 12 located in the same second-order collaborative angle structure arrangement area 20, the flow interference and mixing between them can be avoided, thereby maintaining the independence and effectiveness of each second collaborative angle improvement structure 12. If the distance between the second collaborative angle improvement structures 12 is too small, the air flow between them will affect each other, resulting in a chaotic and unstable flow field and reducing the heat dissipation efficiency. Therefore, it is necessary to ensure that the distance between the second collaborative angle improvement structures 12 can prevent their respective flows from interfering and mixing, so as to achieve the best field synergy effect. At the same time, setting the ratio at 1 / 3 also conforms to the layout rules of the aforementioned collaborative angle improvement area, and can take into account the layout of other subsequent collaborative angle improvement structures.
[0064] Among them, the width direction in this application refers to a direction of the heat dissipation fin, which is perpendicular to the length direction of the heat dissipation fin and also perpendicular to the thickness direction of the heat dissipation fin. The dimension in the width direction is usually used to define the structure and layout of the heat dissipation fin to achieve the best heat dissipation effect.
[0065] When the dimension of the second co - angle improvement structure 12 in the width direction of the fin plate body 10 in the embodiment of the present application exceeds 1 / 3 of the dimension of the second - order co - angle structure arrangement area 20 in the width direction of the fin plate body 10, one second co - angle improvement structure 12 is arranged in each second - order co - angle structure arrangement area 20. By arranging one second co - angle improvement structure 12 in each second - order co - angle structure arrangement area 20, it is possible to avoid flow interference and mixing between them while ensuring that the size of each second co - angle improvement structure 12 is relatively large, thereby improving the natural convection heat dissipation performance of the heat dissipation fins. At the same time, such a design can also maximize the structural stability and anti - deformation ability of each second co - angle improvement structure 12 because they do not need to share the same second - order co - angle structure arrangement area 20 with other second co - angle improvement structures 12, thus reducing the influence of stress concentration and thermal stress. In addition, the manufacturing process of the heat dissipation fins can be simplified because only one second co - angle improvement structure 12 needs to be arranged in each second - order co - angle structure arrangement area 20 without considering the distance and quantity between them, thereby reducing the processing difficulty and cost. In summary, if multiple second co - angle improvement structures 12 are arranged, the distance between them will be too small, resulting in a chaotic and unstable flow field and reducing the heat dissipation efficiency. Moreover, multiple second co - angle improvement structures 12 will also increase the material consumption and processing difficulty, increasing the cost and weight. Therefore, in order to achieve the best heat dissipation performance and economy, it is a more reasonable choice to arrange only one second co - angle improvement structure 12.
[0066] See Figure 2 and Figure 3 As shown, the second co - angle improvement structure 12 in the embodiment of the present application can form a second co - angle improvement area 121 on the side of the second co - angle improvement structure 12 close to the air outlet end. Third - order co - angle structure arrangement areas 30 are respectively arranged on both sides in the width direction of the second co - angle improvement area 121, and the third - order co - angle structure arrangement areas 30 do not overlap with the first co - angle improvement area and the second co - angle improvement area; the plurality of co - angle improvement structures further include a plurality of third co - angle improvement structures 13, and the plurality of third co - angle improvement structures 13 are respectively arranged in each third - order co - angle structure arrangement area 30. By forming a second co - angle improvement area 121 on the side of the second co - angle improvement structure 12 close to the air outlet end and arranging third - order co - angle structure arrangement areas 30 on both sides thereof, the natural convection heat dissipation performance of the heat dissipation fins can be further enhanced. The third co - angle improvement structure 13 in the third - order co - angle structure arrangement area 30 can change the air flow direction, increase the air turbulence degree, and reduce the thickness of the thermal boundary layer. The above - mentioned setting method can avoid the overlap of each co - angle improvement area, ensure that each co - angle structure can exert its maximum heat dissipation effect, and at the same time can also reduce the material consumption and cost. A third co - angle improvement area 131 is formed on the side of the third co - angle improvement structure 13 close to the air outlet end.
[0067] To ensure the distance between multiple third co-angle improvement structures 13 located in the same third-order co-angle structure arrangement area 30, in the embodiments of the present application, the total dimension in the width direction of the fin plate body 10 of the multiple third co-angle improvement structures 13 located in the same third-order co-angle structure arrangement area 30 is less than or equal to 1 / 3 of the dimension in the width direction of the third-order co-angle structure arrangement area 30 on the fin plate body 10. By ensuring the distance between the multiple third co-angle improvement structures 13 located in the same third-order co-angle structure arrangement area 30, the flow interference and mixing between them can be avoided, thereby maintaining the independence and effectiveness of each third co-angle improvement structure 13. If the distance between the third co-angle improvement structures 13 is too small, the air flow between them will affect each other, resulting in a chaotic and unstable flow field and reducing the heat dissipation efficiency. Therefore, it is necessary to ensure that the distance between the third co-angle improvement structures 13 can prevent their respective flows from interfering and mixing, so as to achieve the best field synergy effect. At the same time, setting the ratio at 1 / 3 also conforms to the layout rules of the aforementioned co-angle improvement area, and can take into account the layout of other subsequent co-angle improvement structures.
[0068] When the dimension of the third co-angle improvement structure 13 in the width direction of the fin plate body 10 in the embodiment of the present application exceeds 1 / 3 of the dimension of the third co-angle structure arrangement area 30 in the width direction of the fin plate body 10, one third co-angle improvement structure 13 is arranged in each third co-angle structure arrangement area 30. By arranging one third co-angle improvement structure 13 in each third co-angle structure arrangement area 30, it is possible to avoid flow interference and mixing between them while ensuring that the dimension of each third co-angle improvement structure 13 is relatively large, thereby improving the natural convection heat dissipation performance of the heat dissipation fins. At the same time, such a design can also maximize the structural stability and anti-deformation ability of each third co-angle improvement structure 13 because they do not need to share the same third co-angle structure arrangement area 30 with other third co-angle improvement structures 13, thus reducing the influence of stress concentration and thermal stress. In addition, the manufacturing process of the heat dissipation fins can also be simplified because only one third co-angle improvement structure 13 needs to be arranged in each third co-angle structure arrangement area 30 without considering the distance and quantity between them, thereby reducing the processing difficulty and cost. In summary, if multiple third co-angle improvement structures 13 are arranged, the distance between them will be too small, resulting in a chaotic and unstable flow field and reducing the heat dissipation efficiency. Moreover, multiple third co-angle improvement structures 13 will also increase the material consumption and processing difficulty, raising the cost and weight. Therefore, in order to achieve the best heat dissipation performance and economy, it is a more reasonable choice to arrange only one third co-angle improvement structure 13. When the dimension of the third co-angle improvement structure in the width direction of the fin plate body exceeds the dimension of the third co-angle structure arrangement area in the width direction of the fin plate body, the third co-angle improvement structure is not arranged.
[0069] See Figure 4 As shown, the co-angle improvement component in the embodiment of the present application includes a plurality of co-angle improvement parts, which are sequentially arranged along the length direction of the fin plate body 10. By sequentially arranging a plurality of co-angle improvement parts along the length direction of the fin plate body 10, the effective heat dissipation area of the heat dissipation fins can be increased, and the natural convection heat dissipation performance of the heat dissipation fins can be improved. In order to generate a better synergy effect between the flow field and the temperature field and improve the comprehensive performance of the radiator. Each co-angle improvement part can increase the contact area with the air and at the same time change the flow direction of the air, so that a rotational flow is formed at the top or bottom of the fin, increasing the turbulence degree of the air and reducing the thickness of the thermal boundary layer, thereby improving the heat dissipation efficiency. At the same time, the co-angle improvement part can also enhance the structural stability and anti-deformation ability of the fin because it can disperse the stress on the fin, reducing the influence of stress concentration and thermal stress. Therefore, the co-angle improvement part is an optimized design that takes into account the flow field, temperature field and stress field and has a good field synergy effect.
[0070] The setting of multiple cooperative angle improvement parts needs to meet certain spacing and angles to ensure that each cooperative angle improvement part can effectively change the air flow direction, increase the air turbulence degree, and reduce the thickness of the thermal boundary layer. To achieve the best heat dissipation performance and economy, the number of cooperative angle improvement parts should be reasonably determined according to the length of the fin plate body 10.
[0071] At the end of the first cooperative angle improvement area 111 in the embodiment of the present application, and between the third-order cooperative angle structure arrangement area 30 adjacent to the first cooperative angle improvement area 111, a type-2 arrangement area 40 is formed. The first cooperative angle improvement structure 11 of the cooperative angle improvement part adjacent to the air outlet end of the cooperative angle improvement part, when the dimension in the width direction of the fin plate body 10 is smaller than the dimension of the fin plate body 10 in the width direction of the type-2 arrangement area 40, then the first cooperative angle improvement structure 11 of the cooperative angle improvement part adjacent to the air outlet end of the cooperative angle improvement part is arranged in the type-2 arrangement area 40. Among them, the end of the first cooperative angle improvement area 111 is the end of the first cooperative improvement area close to the air outlet end of the fin plate body 10. By forming a type-2 arrangement area 40 between the end of the first cooperative angle improvement area 111 and the adjacent third-order cooperative angle structure arrangement area 30, selectively arranging the next second cooperation can effectively utilize the space of the fin plate body 10, avoiding waste and repetition. Thus, more arrangement space is provided for other cooperative angle improvement parts later.
[0072] There are multiple cooperative angle improvement components in the embodiment of the present application, and the multiple cooperative angle improvement components are sequentially arranged along the width direction of the fin plate body 10. By sequentially arranging multiple cooperative angle improvement components along the width direction of the fin plate body 10, the number and distribution of the cooperative angle improvement structures of the heat dissipation fins can be increased, thereby improving the heat transfer efficiency and heat dissipation performance of the heat dissipation fins. Specifically, the cooperative angle improvement structure is a convex structure formed on the fin plate body 10, which can change the air flow direction and speed, increase the contact area and time between the air flow and the fin plate body 10, and promote heat transfer and dissipation. The setting of multiple cooperative angle improvement components can make the cooperative angle improvement structures evenly distributed in the width direction of the fin plate body 10, forming multiple cooperative angle improvement areas. Each cooperative angle improvement area can have a cooperative effect on the air flow, causing the air flow to form multiple eddy current areas in the length direction of the fin plate body 10, enhancing the air turbulence degree, and improving the kinetic energy and thermal energy conversion efficiency of the air flow, thereby improving the heat transfer efficiency and heat dissipation performance of the heat dissipation fins. Through the setting of multiple cooperative angle improvement components, the manufacturing cost and complexity of the heat dissipation fins can be reduced, the production process of the heat dissipation fins can be simplified, and the economy and reliability of the heat dissipation fins can be improved.
[0073] The total dimension of multiple first collaborative angle improvement structures 11 in the width direction of the fin plate body 10 in the embodiments of the present application is less than or equal to 1 / 3 of the dimension of the fin plate body 10 in the width direction. By setting the total dimension of multiple first collaborative angle improvement structures 11 in the width direction of the fin plate body 10, flow interference and mixing between them can be avoided, thus maintaining the independence and effectiveness of each first collaborative angle improvement structure 11. If the distance between the first collaborative angle improvement structures 11 is too small, the air flow between them will affect each other, resulting in a chaotic and unstable flow field and reducing the heat dissipation efficiency. Therefore, it is necessary to ensure that the distance between the first collaborative angle improvement structures 11 can prevent their respective flows from interfering and mixing, so as to achieve the best field collaboration effect. At the same time, setting the ratio at 1 / 3 also conforms to the layout rules of the aforementioned collaborative angle improvement area, and can take into account the layout of other subsequent collaborative angle improvement structures.
[0074] In the embodiments of the present application, when the dimension of the first collaborative angle improvement structure 11 in the width direction of the fin plate body 10 exceeds 1 / 3 of the dimension of the fin plate body 10 in the width direction, only one collaborative angle improvement component is arranged. By arranging only one first collaborative angle improvement structure 11, while ensuring that the dimension of each second collaborative angle improvement structure 12 is relatively large, flow interference and mixing between multiple first collaborative angle improvement structures 11 can be avoided, thereby improving the natural convection heat dissipation performance of the heat dissipation fins. At the same time, such a design can also maximize the structural stability and anti-deformation ability of each first collaborative angle improvement structure 11, and can simplify the manufacturing process of the heat dissipation fins. Only one first collaborative angle improvement structure 11 needs to be arranged, without considering the distance and quantity between them, thereby reducing the processing difficulty and cost.
[0075] Multiple collaborative angle improvement structures in the embodiments of the present application are each one of a circular convex hull, an elliptical convex hull, a rhombic convex hull, a water droplet-shaped convex hull, or a combination of multiple of a circular convex hull, an elliptical convex hull, a rhombic convex hull, a water droplet-shaped convex hull. The collaborative angle improvement structure faces the oncoming flow and can form a single wake vortex at its geometric perimeter and directly behind. This structural shape can be a cylindrical convex hull, an elliptical convex hull, a rectangular convex hull, a rhombic convex hull, a water droplet-shaped convex hull, or other polygonal convex hulls. The height of such a structure in the direction perpendicular to the plate surface of the fin plate body 10 should be less than the spacing between the fin plate bodies 10, the contour length parallel to the oncoming flow direction should be close to the contour width perpendicular to the oncoming flow direction and should be greater than or equal to the contour width, and the contour length should be within 5 times the contour width.
[0076] In the embodiments of the present application, the surfaces of the circular convex hull, elliptical convex hull, diamond convex hull, and water-drop convex hull that are far from the fin plate body 10 are smoothly transitioned. By setting the coordinated angle with smooth transition to improve the structure, the separation and resistance between the air flow and the fin surface can be reduced, thereby improving the fluidity and stability of the air flow and enhancing the convective heat transfer effect of the heat dissipation fins. By setting the coordinated angle with smooth transition to improve the structure, the stress concentration and fatigue cracks on the fin surface can be reduced, thereby improving the strength and durability of the heat dissipation fins.
[0077] See Figure 9 and Figure 10 As shown, it is the simulation result of the circular convex hull. Among them, the more preferred shapes also include: diamond convex hull: the ratio of the long axis of symmetry to the short axis of symmetry is 1.4 to 1.8, preferably 1.618. See Figure 11 and Figure 12 As shown, it is the simulation result of the diamond convex hull with a short axis of 0.53 mm and a long axis of 0.86 mm. Elliptical convex hull: the ratio of the long axis to the short axis is 1.5:1 to 3:1, preferably 2:1. See Figure 13 and Figure 14 As shown, it is the simulation result diagram of the elliptical convex hull with a short axis of 0.4 mm and a long axis of 0.8 mm. Water-drop convex hull: the polar coordinate equation of the water-drop shape (with the tip of the water-drop tail as the origin) is where N determines the drop size, and its selection can be based on the fin selection according to the size relationship described above. n determines the water-drop shape, and the smaller n is, the closer it is to a circle. n takes values from 1 to 4, preferably 3. The long axis direction of the above shape should be parallel to the oncoming flow direction, and the round end of the water drop should face the oncoming flow. See Figure 15 and Figure 16 As shown, it is the simulation result diagram of the water-drop convex hull with a long axis of 0.84 mm.
[0078] The benefits of each shape scheme are shown in Table 1:
[0079] Circular convex hull Rhombus convex hull Elliptical convex hull Droplet-shaped convex hull Outlet temperature / K 300.00 300.00 300.01 300.01 Inlet temperature / K 319.26 319.87 319.27 319.8 Heat transfer coefficient 133.49 140.41 133.58 132.80 Inlet and outlet pressure difference 112.28 120.65 108.18 106.5 Benefit PEC 2.8％ 1.3％ 6.5％
[0080] Table 1
[0081] Combined scheme embodiment:
[0082] See Figures 17 to 20 As shown, for the simulation comparison between the water-drop - circular - diamond combined scheme and the circular scheme, better heat transfer effect is achieved with the combined scheme. Please refer to Table 2:
[0083] Droplet-shaped array Shape combination Outlet temperature / K 300.00 300.00 Inlet temperature / K 322.70 323.04 Heat transfer coefficient 177.40 182.58 Inlet and outlet pressure difference 127.99 132.38 Benefit PEC 1.404 1.447
[0084] Table 2
[0085] The fins used in actual PCs are not simple rectangles. There are often step differences, and the flow channel area varies with the flow position. Based on this characteristic, the fin performance can be further improved through shape combination layout. Since the flow rate on each flow-through surface of a single flow channel is the same, the flow velocity is high at the position of the small flow channel's flow-through area and low at the position of the large flow channel's flow-through area. High-impedance strong vortex excitation shapes (such as rhombus and circle) are set at low flow velocity positions, and low-impedance weak vortex excitation shapes (such as ellipse and water droplet shape) are set at high flow velocity positions. Table 3 shows the impedance values of several shapes.
[0086] Circular convex hull Rhombus convex hull Elliptical convex hull Droplet-shaped convex hull Inlet and outlet pressure difference 112.28 120.65 108.18 106.5
[0087] Table 3
[0088] See Figure 5 and Figure 6 As shown, it is an embodiment using a circular convex hull. The circular convex hull is selected as the cooperative angle adjustment structure. The convex hull height: 0.5 mm, the inner diameter of the convex hull: 0.3 mm - 0.7 mm, and the outer diameter of the convex hull: 0.4 mm - 1 mm.
[0089] See Figure 7 As shown, it shows the simulation results of the position relationship between each order of circular convex hull and the field synergy improvement area, and it can be seen that the effect meets the expectations of the composite design method.
[0090] See Figure 8 As shown, the benefit effect of the circular convex hull embodiment: It shows the comparison of the cooperative angle between the simple close-packed scheme and the scheme of this patent. It can be seen that with fewer convex field synergy adjustment structures, the coverage rate of the improvement area of this patent is better:
[0091] The numerical benefit results are shown in Table 4. The design of the embodiment of this application has achieved better results in both comprehensive indicators and benefits.
[0092] Plain fin Comparative fin Designed fin Outlet temperature / K 300.01 300.12 300.00 Inlet temperature / K 316.70 321.53 320.89 Heat transfer coefficient 107.44 160.38 152.71 Inlet and outlet pressure difference 81.32 185.73 150.7 Benefit PEC 13.30％ 15.70％
[0093] Table 4
[0094] According to the second aspect of this application, a radiator is provided. The radiator includes a housing and a plurality of heat dissipation fins spacedly installed in the housing. The housing has an air inlet and an air outlet. The heat dissipation fins extend in the direction from the air inlet to the air outlet. Among them, the heat dissipation fins are the above-mentioned heat dissipation fins.
[0095] According to the third aspect of this application, an electronic device is provided. The electronic device includes the above-mentioned radiator. The electronic device especially refers to an electronic device with requirements for the thickness of an ultra-thin centrifugal fan, including mobile terminals such as mobile phones, tablet computers, laptop computers, wearable devices, smart bracelets, navigation devices, etc., and fixed terminals such as large-screen TVs and desktop computers.
[0096] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A heat dissipation fin, the heat dissipation fin being used for an electronic device, characterized in that, The heat dissipation fins include: A fin plate body having an air inlet end and an air outlet end; A cooperative angle improvement component disposed on a first side of the fin plate body, the cooperative angle improvement component including a cooperative angle improvement portion; The cooperative angle improvement portion includes a plurality of cooperative angle improvement structures arranged from the air inlet end to the air outlet end. The plurality of cooperative angle improvement structures include a first cooperative angle improvement structure and two second cooperative angle improvement structures. The first cooperative angle improvement structure is disposed near the air inlet end of the cooperative angle improvement portion, and the first cooperative angle improvement structure can form a first cooperative angle improvement area on a side of the first cooperative angle improvement structure near the air outlet end; On both sides of the first cooperative angle improvement area in the width direction of the fin plate body, two second-order cooperative angle structure arrangement areas are respectively provided, and the plurality of second cooperative angle improvement structures are respectively disposed in the two second-order cooperative angle structure arrangement areas; the remaining cooperative angle improvement structures are located between the second cooperative angle improvement structures and the air outlet end.
2. The heat dissipation fin according to claim 1, wherein The total dimension of the plurality of second cooperative angle improvement structures located in the same second-order cooperative angle structure arrangement area in the width direction of the fin plate body is less than or equal to 1 / 3 of the dimension of the second-order cooperative angle structure arrangement area in the width direction of the fin plate body.
3. The heat dissipation fin according to claim 1, wherein When the dimension of the second cooperative angle improvement structure in the width direction of the fin plate body exceeds 1 / 3 of the dimension of the second-order cooperative angle structure arrangement area in the width direction of the fin plate body, one second cooperative angle improvement structure is arranged in each second-order cooperative angle structure arrangement area.
4. The heat dissipation fin according to claim 1, characterized in that, The second cooperative angle improvement structure can form a second cooperative angle improvement area on a side of the second cooperative angle improvement structure near the air outlet end. On both sides in the width direction of the second cooperative angle improvement area, third-order cooperative angle structure arrangement areas are respectively provided, and the third-order cooperative angle structure arrangement areas do not coincide with the first cooperative angle improvement area and the second cooperative angle improvement area; The plurality of cooperative angle improvement structures further include a plurality of third cooperative angle improvement structures, and the plurality of third cooperative angle improvement structures are respectively disposed in the third-order cooperative angle structure arrangement areas.
5. The heat dissipation fin according to claim 4, wherein, The total dimension of the plurality of third cooperative angle improvement structures located in the same third-order cooperative angle structure arrangement area in the width direction of the fin plate body is less than or equal to 1 / 3 of the dimension of the third-order cooperative angle structure arrangement area in the width direction of the fin plate body.
6. The heat dissipation fin according to claim 4, wherein, When the dimension of the third cooperative angle improvement structure in the width direction of the fin plate body exceeds 1 / 3 of the dimension of the third-order cooperative angle structure arrangement area in the width direction of the fin plate body, one third cooperative angle improvement structure is provided in each third-order cooperative angle structure arrangement area; when the dimension of the third cooperative angle improvement structure in the width direction of the fin plate body exceeds the dimension of the third-order cooperative angle structure arrangement area in the width direction of the fin plate body, the third cooperative angle improvement structure is not arranged.
7. The heat dissipation fin according to claim 4, wherein, The collaborative angle improvement component includes a plurality of collaborative angle improvement parts, and the plurality of collaborative angle improvement parts are arranged in sequence along the length direction of the fin plate body.
8. The heat dissipation fin according to claim 7, wherein, At the end of the first collaborative angle improvement area, and between the third-order collaborative angle structure arrangement area adjacent to the first collaborative angle improvement area, there are two types of arrangement areas. If the size of the first collaborative angle improvement structure of the collaborative angle improvement part adjacent to the air outlet end of the collaborative angle improvement part in the width direction of the fin plate body is smaller than the size of the fin plate body in the width direction of the two types of arrangement areas, then the first collaborative angle improvement structure of the collaborative angle improvement part adjacent to the air outlet end of the collaborative angle improvement part is arranged in the two types of arrangement areas.
9. The heat dissipation fin according to claim 1, wherein, There are a plurality of the collaborative angle improvement components, and the plurality of collaborative angle improvement components are arranged in sequence along the width direction of the fin plate body.
10. The heat dissipation fin according to claim 1, wherein The total size of the plurality of first collaborative angle improvement structures in the width direction of the fin plate body is less than or equal to 1 / 3 of the size of the fin plate body in the width direction.
11. The heat dissipation fin according to claim 1, characterized in that, If the size of the first collaborative angle improvement structure in the width direction of the fin plate body exceeds 1 / 3 of the size of the fin plate body in the width direction, then only one collaborative angle improvement component is arranged.
12. The heat dissipation fin according to claim 1, wherein The plurality of collaborative angle improvement structures are all one of a circular convex hull, an oval convex hull, a rhombic convex hull, and a water droplet convex hull, or a combination of multiple of a circular convex hull, an oval convex hull, a rhombic convex hull, and a water droplet convex hull.
13. The heat dissipation fin according to claim 12, wherein, The surfaces of the circular convex hull, the oval convex hull, the rhombic convex hull, and the water droplet convex hull that are far from the fin plate body are smoothly transitioned.
14. A radiator, characterized in that, The radiator includes a housing and a plurality of heat dissipation fins spacedly installed in the housing. The housing has an air inlet and an air outlet, and the heat dissipation fins extend along the direction from the air inlet to the air outlet. Among them, the heat dissipation fins are the heat dissipation fins according to any one of claims 1 to 13.
15. An electronic device, characterized in that, The electronic device includes a radiator, and the radiator is the radiator according to claim 14.