Fin radiator and radiating structure

Abstract

The utility model discloses a fin radiator and a heat radiation structure, relates to the heat radiation module technical field, the fin radiator comprises a heat radiation fin group and wind guide fins, the heat radiation fin group comprises a plurality of heat radiation fins arranged in parallel, a heat radiation air channel is arranged between adjacent heat radiation fins, and the wind guide fins are arranged in the heat radiation fin group. The heat dissipation air channel comprises an inlet and an outlet which are oppositely arranged; the heat dissipation fin group is divided into a strong wind area, a transition area and a weak wind area along the arrangement direction of the plurality of heat dissipation fins; at least part of the heat dissipation fins in the strong wind area and the transition area are connected with air guide fins, the air guide fins comprise air guide parts, and the air guide parts point to the weak wind area along the strong wind area and are obliquely arranged in the direction away from the inlet; the included angle formed between the air guide part and the heat dissipation fins is defined as alpha, and alpha is smaller than 90 degrees. According to the scheme, part of airflow blown into the strong wind area deviates towards the transition area and the weak wind area, meanwhile, airflow blown into the heat dissipation air channel is converted into a turbulent flow state from a laminar flow state, and finally the overall heat dissipation efficiency of the heat dissipation structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation modules, in particular to a fin heat sink and a heat dissipation structure. Background Art

[0002] When a laptop is running, hardware such as the CPU (central processing unit) and graphics card will generate a large amount of heat, causing the temperature inside the laptop to rise. If the heat is not discharged in time, it will affect the service life of the laptop. In order to avoid this, a heat dissipation structure is generally used to dissipate heat from heat-generating components such as the CPU and graphics card. Among them, the heat conduction path of this method is: the heat generated by hardware such as the CPU is conducted to the fin radiator through a heat pipe, and then the airflow generated by the fan exchanges heat with the fin radiator to bring the heat transferred to the fin radiator out of the laptop. However, in actual use, it was found that since the cooling fan is difficult to achieve uniform air discharge, the heat exchange area in the fin radiator is uneven, thereby affecting the overall heat dissipation efficiency of the heat dissipation structure.

[0003] In view of this, it is necessary to provide a fin heat sink and a heat dissipation structure to solve or at least alleviate the above technical problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a fin heat sink and a heat dissipation structure, aiming to solve the technical problem of poor heat dissipation effect of the heat dissipation structure inside a notebook computer.

[0005] To achieve the above objectives, the present invention provides a fin heat sink, comprising:

[0006] A heat dissipation fin group, the heat dissipation fin group comprising a plurality of heat dissipation fins arranged in parallel, a heat dissipation air duct being provided between adjacent heat dissipation fins, the heat dissipation air duct comprising an inlet and an outlet arranged opposite to each other;

[0007] Dividing the heat dissipation fin group into a strong wind area, a transition area and a weak wind area along the arrangement direction of the plurality of heat dissipation fins;

[0008] Wind guide fins, at least some of the heat dissipation fins in the strong wind zone and the transition zone are connected to the wind guide fins, the wind guide fins comprising a wind guide portion, the wind guide portion being arranged obliquely in a direction from the strong wind zone to the weak wind zone and away from the inlet;

[0009] The included angle formed between the air guide portion and the heat dissipation fins is defined as α, and α satisfies: α<90°.

[0010] In one embodiment, the angle value of α gradually decreases along the direction from the strong wind area to the weak wind area.

[0011] In one embodiment, the fin heat sink also includes an air guide fin group, the air guide fin group includes the air guide fins, the air guide fins include a base and the air guide part, the air guide part is installed on the base, the base is plugged into the heat dissipation duct, and the base and the heat dissipation fins are fitted together, and two adjacent bases are buckled and connected to each other, and the air guide fin group and the heat dissipation fin group are detachably connected.

[0012] In one embodiment, the wind-guiding fin group further includes auxiliary fins, and the auxiliary fins are arranged in close contact with the heat dissipation fins in the weak wind area.

[0013] In one embodiment, the length of the base is greater than the length of the heat dissipation fins, and the base is plugged into the heat dissipation duct along the direction from the outlet to the inlet. At least some of the heat dissipation fins in the strong wind zone and the transition zone are provided with first air holes, and the base that is attached to the heat dissipation fins provided with the first air holes is provided with second air holes, and the first air holes are connected to the second air holes.

[0014] The first air hole and the second air hole are arranged close to the inlet.

[0015] In one embodiment, the length of the base is less than the length of the heat dissipation fins, the base is plugged into the heat dissipation duct along a direction from the inlet to the outlet, at least some of the heat dissipation fins in the strong wind zone and the transition zone are provided with first air holes, and the length of the base along the extension direction of the heat dissipation duct is less than the clear distance from one end of the heat dissipation fin located at the inlet to the first air holes;

[0016] The first air hole is arranged close to the inlet.

[0017] In one embodiment, the heat dissipation fin group and the air guide portion are integrally formed, and at least part of the heat dissipation fins in the strong wind zone and the transition zone are provided with first air holes;

[0018] The first air hole is arranged close to the inlet.

[0019] In one embodiment, the heat sink fin group further includes a first heat conducting plate and a second heat conducting plate arranged opposite to each other, the first heat conducting plate and the second heat conducting plate are arranged perpendicular to the heat sink fins, the top and bottom of the heat sink fins are respectively connected to the first heat conducting plate and the second heat conducting plate, and the two ends of the air guide portion are respectively connected to the first heat conducting plate and the second heat conducting plate.

[0020] The present invention further provides a heat dissipation structure, comprising a fin heat sink as described in any one of the above embodiments, wherein the fin heat sink comprises an air inlet, the air guide portion is arranged near the air inlet, and the heat dissipation structure further comprises:

[0021] heat source;

[0022] A vapor chamber, the vapor chamber being arranged in contact with the heat source to absorb the heat generated by the heat source;

[0023] A heat pipe, the heat pipe comprising an evaporation section and a condensation section, the evaporation section being bonded to the vapor chamber, and the condensation section being bonded to the heat sink assembly;

[0024] The fan includes an air supply port, and the air supply port is arranged corresponding to the air inlet.

[0025] In one embodiment, the distances between the strong wind zone, the transition zone, and the weak wind zone of the fin heat sink and the heat source increase sequentially.

[0026] In the technical solution provided by the present invention, the fin radiator includes a cooling fin group and air guide fins, wherein the cooling fin group includes a plurality of cooling fins arranged in parallel, and a cooling air duct is provided between adjacent cooling fins, and the cooling air duct includes an inlet and an outlet arranged relatively; the cooling fin group is divided into a strong wind zone, a transition zone and a weak wind zone along the arrangement direction of the plurality of cooling fins; at least part of the cooling fins in the strong wind zone and the transition zone are connected with air guide fins, and the air guide fins include an air guide portion, and the air guide portion is inclined in a direction from the strong wind zone to the weak wind zone and away from the inlet; the angle formed between the air guide portion and the cooling fins is defined as α, and α satisfies: α<90°. Through this arrangement, when the fin heat sink provided by the present invention is applied to the heat dissipation structure of a laptop computer, part of the airflow blown into the strong wind area by the fan will be deviated to the transition area and the weak wind area under the action of the air guide part, thereby improving the heat exchange efficiency in the transition area and the weak wind area, making the heat exchange area of ​​the fin heat sink more uniform, thereby improving the heat dissipation efficiency; at the same time, due to the action of the air guide part, the airflow blown into the heat dissipation duct is converted from a laminar state to a turbulent state, so that the cold airflow can more fully contact the heat dissipation fins, thereby further improving the overall heat exchange efficiency of the fin heat sink, and ultimately improving the overall heat dissipation efficiency of the heat dissipation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 A schematic structural diagram of an embodiment of a fin heat sink provided by the present invention;

[0029] Figure 2 for Figure 1 Structural diagram from another perspective;

[0030] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the AA section;

[0031] Figure 4 for Figure 2 An enlarged schematic diagram of the part B in the middle;

[0032] Figure 5 This is a schematic diagram of the exploded structure of an embodiment of the fin heat sink provided by the present invention;

[0033] Figure 6 A schematic structural diagram of an embodiment of a heat dissipation structure provided by the present utility model;

[0034] Figure 7 for Figure 6 Schematic diagram of the decomposition structure.

[0035] Description of Figure Numbers:

[0036] 1000, heat dissipation structure;

[0037] 1. Fin radiator; 11. Cooling fin group; 111. Cooling fin; 112. Cooling air duct; 1121. Inlet; 113. First air hole; 114. First heat conduction plate; 115. Second heat conduction plate; 12. Air guide fin group; 121. Air guide fin; 1211. Air guide portion; 1212. Base; 1213. Second air hole; 122. Auxiliary fin; 13. Air inlet; 14. Strong wind zone; 15. Transition zone; 16. Weak wind zone

[0038] 2. Heat source;

[0039] 3. Vapor chamber;

[0040] 4. Heat pipe; 41. Evaporation section; 42. Condensation section;

[0041] 5. Fan; 51. Air outlet;

[0042] X, first direction; Y, plugging direction.

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] When a laptop is running, its core hardware, such as the CPU and graphics card, generates a significant amount of heat. These hardware components continuously generate heat when operating efficiently. If this heat isn't promptly removed from the laptop, the internal temperature will rise, affecting the device's stability and lifespan. To prevent this, laptops typically employ a heat dissipation mechanism to ensure efficient heat removal. This heat dissipation mechanism typically includes several key components: 1. A heat pipe, which quickly transfers heat generated by hardware like the CPU and graphics card to a heat sink with fins; 2. A heat sink with fins, which increases the heat dissipation surface area, allowing the heat to be more efficiently dissipated into the surrounding air; and 3. A fan, which generates a cool airflow and blows it into the heat sink with fins, exchanging heat with the airflow and removing the heat from the laptop. In this process, the heat pipe acts as a bridge, transferring heat from the heat source to the heat sink with fins, while the fan acts as a heat transporter, removing the heat through the airflow.

[0048] However, in actual use, it is often difficult for the cooling fan to achieve uniform air output, which leads to uneven heat exchange areas in the fin radiator. According to the flow rate of the airflow blown out by the cooling fan in the fin radiator, the fin radiator is divided into a strong wind zone, a transition zone and a weak wind zone. Since the airflow velocity in the weak wind zone is relatively low, the airflow rate passing through the weak wind zone per unit time is relatively small, so the heat exchange efficiency in the weak wind zone is relatively low, resulting in a low material utilization rate of the fin radiator. The heat exchange efficiency in the strong wind zone is limited by the material properties and is difficult to continuously improve. Ultimately, the heat transferred to the fin radiator is difficult to dissipate, and the continuous accumulation causes the overall temperature of the fin radiator to continue to rise, thereby affecting the overall heat dissipation efficiency of the heat dissipation structure. In addition, the cold air flow blown into the fin radiator by the cooling fan is mainly in a laminar state. When the cold air flow passes through the heat dissipation channel between two adjacent fins in the fin radiator, the gas close to the fins can fully exchange heat, while the gas away from the fins, that is, the gas close to the heat dissipation channel, is difficult to exchange heat in time and is discharged out of the fin radiator. This phenomenon will also lead to unsatisfactory overall heat exchange efficiency of the fin radiator, thereby affecting the overall heat dissipation efficiency of the heat dissipation structure.

[0049] In view of this, the present invention proposes a fin heat sink to solve the above technical problems.

[0050] See also Figures 1 to 4 In one embodiment of the present invention, the fin heat sink 1 includes a heat dissipation fin group 11 and air guide fins 121. The heat dissipation fin group 11 includes a plurality of heat dissipation fins 111 arranged in parallel, and a heat dissipation duct 112 is provided between adjacent heat dissipation fins 111. The heat dissipation duct 112 includes an inlet 1121 and an outlet arranged opposite to each other. The heat dissipation fin group 11 is divided into a strong wind zone 14, a transition zone 15 and a weak wind zone 16 along the arrangement direction of the plurality of heat dissipation fins 111. At least some of the heat dissipation fins 111 in the strong wind zone 14 and the transition zone 15 are connected with air guide fins 121. The air guide fins 121 include an air guide portion 1211. The air guide portion 1211 is tilted in a direction from the strong wind zone 14 to the weak wind zone 16 and away from the inlet 1121. The angle formed between the air guide portion 1211 and the heat dissipation fins 111 is defined as α, and α satisfies: α<90°.

[0051] Specifically, the plurality of heat dissipation fins 111 are arranged in parallel and evenly spaced, thereby forming a plurality of parallel heat dissipation ducts 112. The heat dissipation ducts 112 are used for passing cold air. In the heat dissipation ducts 112, the cold air exchange heat with the heat dissipation fins 111, so that the heat in the heat dissipation fins 111 enters the cold air flow and is discharged with the cold air flow, thereby achieving the purpose of dissipating the heat inside the laptop. In this embodiment, please refer to Figure 1According to the rotation direction of the fan 5, the heat dissipation fin group 11 is divided into a strong wind zone 14, a transition zone 15 and a weak wind zone 16 along the arrangement direction of the heat dissipation fins 111. The air flow rate passing through the strong wind zone 14 per unit time is the largest, and the air flow rate passing through the weak wind zone 16 per unit time is the smallest. In this embodiment, air guide fins 121 are provided in the strong wind zone 14 and the transition zone 15. The air guide fins 121 are connected to the heat dissipation fins 111. The connection method includes one of multiple methods such as snap-on, plug-in, welding, integrated molding, and bonding. The end of the air guide fin 121 is provided with an air guide portion 1211. The air guide portion 1211 is used to guide the movement path of the cold air flow. According to this embodiment, please refer to Figure 2 and Figure 4 The direction from the strong wind zone 14 to the weak wind zone 16 is defined as a first direction X. One end of the air guide portion 1211 is arranged close to the heat dissipation fins 111, and the other end is arranged along the first direction X away from the heat dissipation fins 111. Therefore, an angle α is formed between the air guide portion 1211 and the heat dissipation fins 111. In order to guide the cold air flow to the weak wind zone 16, α is set at an acute angle. In this embodiment, the angle value of α is set to be less than 45° to avoid affecting the circulation of the cold air flow in the strong wind zone 14 and the transition zone 15. It should be noted that the number of air guide fins 121 needs to be determined according to the gas flow that needs to be directed to the weak wind zone 16. That is to say, when the gas flow that needs to be introduced into the weak wind zone 16 is large, the number of air guide fins 121 is the same as the number of heat dissipation fins 111 in the strong wind zone 14 and the transition zone 15, and the heat dissipation fins 111 and the air guide fins 121 are arranged in a one-to-one correspondence; when the gas flow that needs to be introduced into the weak wind zone 16 is small, the number of air guide fins 121 is less than the number of heat dissipation fins 111 in the strong wind zone 14 and the transition zone 15.

[0052] In the technical solution provided in this embodiment, the fin heat sink 1 includes a heat dissipation fin group 11 and air guide fins 121. The heat dissipation fin group 11 includes a plurality of heat dissipation fins 111 arranged in parallel, a heat dissipation duct 112 is provided between adjacent heat dissipation fins 111, and the heat dissipation duct 112 includes an inlet 1121 and an outlet arranged opposite to each other; the heat dissipation fin group 11 is divided into a strong wind zone 14, a transition zone 15 and a weak wind zone 16 along the arrangement direction of the plurality of heat dissipation fins 111; at least some of the heat dissipation fins 111 in the strong wind zone 14 and the transition zone 15 are connected with air guide fins 121, and the air guide fins 121 include an air guide portion 1211, which is tilted in a direction from the strong wind zone 14 to the weak wind zone 16 and away from the inlet 1121; the angle formed between the air guide portion 1211 and the heat dissipation fins 111 is defined as α, and α satisfies: α<90°. Through this arrangement, when the fin heat sink 1 provided by the present invention is applied to the heat dissipation structure 1000 of a laptop computer, part of the airflow blown into the strong wind zone 14 by the fan 5 will be offset to the transition zone 15 and the weak wind zone 16 under the action of the air guide portion 1211, thereby improving the heat exchange efficiency of the transition zone 15 and the weak wind zone 16, making the heat exchange area of ​​the fin heat sink 1 more uniform, thereby improving the heat dissipation efficiency; at the same time, due to the action of the air guide portion 1211, the airflow blown into the heat dissipation duct 112 is converted from a laminar state to a turbulent state, so that the cold airflow can more fully contact the heat dissipation fins 111, thereby further improving the overall heat exchange efficiency of the fin heat sink 1, and ultimately improving the overall heat dissipation efficiency of the heat dissipation structure 1000.

[0053] In one embodiment of the present invention, the angle value of α gradually decreases along the direction from the strong wind zone 14 to the weak wind zone 16, that is, along the first direction X, the angle between the wind guide portion 1211 and the heat dissipating fins 111 gradually decreases. For example, along the first direction X, the angle value of α decreases from 30° to 20°. This setting makes the airflow offset smaller the closer to the weak wind zone 16, and maximizes the airflow offset in the strong wind zone 14, thereby causing part of the airflow blown into the strong wind zone 14 to be offset to the transition zone 15 and the weak wind zone 16, while the airflow offset blown into the transition zone 15 is smaller, thereby avoiding too small a gas flow in the transition zone 15. Through this setting, the gas flow in each area of ​​the fin radiator 1 is made more balanced, thereby ensuring the overall heat exchange efficiency of the fin radiator 1.

[0054] In addition, in one embodiment of the present utility model, the fin heat sink 1 also includes an air guide fin group 12, the air guide fin group 12 includes an air guide fin 121, the air guide fin 121 includes a base 1212 and an air guide portion 1211, the air guide portion 1211 is installed on the base 1212, the base 1212 is plugged into the heat dissipation duct 112, and the base 1212 is fitted with the heat dissipation fin 111, and the two adjacent bases 1212 are buckled and connected to each other, and the air guide fin group 12 and the heat dissipation fin group 11 are detachably connected. In one embodiment, the air guide portion 1211 is first installed on the base 1212. The base 1212 is a sheet-like structure with the same height as the heat dissipation fins 111. After the air guide fin group 12 is inserted into the heat dissipation fin group 11, the base 1212 and the heat dissipation fin group 11 can be arranged in a close fit, and the base 1212 is connected to each other to form a whole, which facilitates the disassembly and assembly of the air guide fin group 12. Through this arrangement, the fin heat sink 1 is configured as a detachable combination structure, so that the heat dissipation fin group 11 and the air guide fin group 12 can be detachably connected. Therefore, if one of the heat dissipation fin group 11 or the air guide fin group 12 is damaged, only the damaged part needs to be replaced, without replacing the entire fin heat dissipation group 1. At the same time, the detachable design can reduce the difficulty of cleaning dust from the fin heat dissipation group 1.

[0055] Please continue reading Figure 5 Furthermore, in one embodiment of the present invention, the air guide fin group 12 also includes auxiliary fins 122, which are arranged in contact with the heat dissipation fins 111 in the weak wind area 16. The auxiliary fins 122 do not have an air guide function. The auxiliary fins 122 are used to connect with the air guide fins 121 so that the length of the air guide fin group 12 is the same or similar to the length of the heat dissipation fin group 11, thereby improving the integrity of the air guide fin group 12. At the same time, the provision of the auxiliary fins 122 can facilitate cleaning of the heat dissipation fins 111 in the weak wind area 16.

[0056] The fin heat sink 1 can be implemented in various forms. In one embodiment, the length of the base 1212 is greater than the length of the heat dissipation fins 111. The base 1212 is inserted into the heat dissipation duct 112 in the direction from the outlet to the inlet 1121. At least some of the heat dissipation fins 111 in the strong wind zone 14 and the transition zone 15 are provided with first air holes 113. The base 1212, which is arranged in contact with the heat dissipation fins 111 with the first air holes 113, is provided with second air holes 1213. The first air holes 113 and the second air holes 1213 are connected. The first air holes 113 and the second air holes 1213 are arranged near the inlet 1121. Please refer to Figure 5In this embodiment, the base 1212 is relatively long, and the air guide fin group 12 is plugged into the heat sink fin group 11 along the plug-in direction Y, so that the air guide portion 1211 is arranged on one side of the opening 1121 of the heat sink 111 to guide the airflow. With this arrangement, when it is necessary to clean dust from the fin heat sink 1, the dust on the surface of the heat sink 111 can be shaken off by simply moving the air guide fins 121. After the dust on the surface of the heat sink 111 is cleaned, the air guide fin group 12 is pulled out in the direction opposite to the plug-in direction Y. At this time, the fin heat sink 1 can be cleaned by simply using a brush to clean the dust on the surface of the air guide fins 121. This cleaning process is convenient and quick, and the fin heat sink 1 can be cleaned efficiently without using a dust blower or other dust blowing tools. Furthermore, in this embodiment, the outlines of the first and second air holes 113, 1213 are squares with rounded corners. In other embodiments, the outlines of the first and second air holes 113, 1213 include a circle, a rounded rectangle, or a polygon. The first air holes 113 are located in some of the heat sink fins 111 in the strong wind zone 14 and the transition zone 15. The first air holes 113 are not required in the weak wind zone 16. The second air holes 1213 are located corresponding to the first air holes 113, and their outer contours projected onto the plane of the heat sink fins 111 are the same. By setting the first air hole 113 and the second air hole 1213, and setting the first air hole 113 and the second air hole 1213 close to the inlet 1121, the air flow guided by the air guide portion 1211 can move to the weak wind area 16 through the first air hole 113 and the second air hole 1213, so as to increase the gas flow in the weak wind area 16; at the same time, the air guide portion 1211 and the first air hole 113 and the second air hole 1213 are arranged in coordination to further ensure that the cold air flow blown into the fin heat sink 1 is transformed from a laminar state to a turbulent state, thereby further ensuring that the cold air flow is in full contact with the heat sink fins 111.

[0057] In another embodiment, the length of the base 1212 is less than the length of the heat dissipating fins 111, and the base 1212 is inserted into the heat dissipating duct 112 along the direction from the inlet 1121 to the outlet. At least some of the heat dissipating fins 111 in the strong wind zone 14 and the transition zone 15 are provided with first air holes 113. The length of the base 1212 along the extension direction of the heat dissipating duct 112 is less than the net distance from one end of the heat dissipating fin 111 located at the inlet 1121 to the first air hole 113 (the net distance refers to the pure distance between this end of the base 1212 and the first air hole 113, that is, the minimum distance between this end of the base 1212 and the hole wall of the first air hole 113); the first air hole 113 is arranged close to the inlet 1121. In this embodiment, adjacent bases 1212 are interlocked to form the heat sink fin assembly 11, which is then inserted into the heat dissipation duct 112 through the inlet 1121. The bases 1212 in this embodiment are relatively short, saving manufacturing materials and reducing the overall weight of the fin heat sink 111. Furthermore, the bases 1212 do not cover the first air holes 113 provided on the heat sink fins 111. Therefore, in this embodiment, the bases 1212 do not need to have second air holes 1213. This arrangement makes the air guide fin assembly 12 easier to insert and remove, reducing the difficulty of replacing the air guide fin assembly 12. Furthermore, the bases 1212 do not need to have second air holes 1213, simplifying the manufacturing process and reducing the manufacturing cost of the fin heat sink 111. In this embodiment, by providing the first air holes 113 close to the opening, the airflow guided by the air guide portion 1211 can flow smoothly through the first air holes 113 to the weak wind zone 16, thereby increasing the air flow in the weak wind zone 16. At the same time, the cold air flow blown into the fin heat sink 1 can be converted into a turbulent state.

[0058] In another embodiment, the heat sink fin assembly 11 and the air guide 1211 are integrally formed, and at least some of the heat sink fins 111 in the strong wind zone 14 and the transition zone 15 are provided with first air holes 113; the first air holes 113 are located near the inlet 1121. This arrangement enhances the integrity of the fin heat sink 1 and improves its rigidity. At the same time, the air guide 1211 is directly connected to the heat sink fins 111, enabling effective heat exchange between the air guide 1211 and the heat sink fins 111, thereby increasing the wind impact area and heat dissipation area of ​​the heat sink fins 111 and improving heat dissipation efficiency. The beneficial effects of providing the first air holes 113 have been described in the above embodiments and will not be repeated here.

[0059] See also Figure 2 and Figure 5In one embodiment of the present invention, the heat sink fin assembly 11 further includes a first heat conducting plate 114 and a second heat conducting plate 115 disposed opposite each other. The first heat conducting plate 114 and the second heat conducting plate 115 are disposed perpendicular to the heat sink fins 111. The top and bottom of the heat sink fins 111 are connected to the first heat conducting plate 114 and the second heat conducting plate 115, respectively. The ends of the air guide portion 1211 are connected to the first heat conducting plate 114 and the second heat conducting plate 115, respectively. The first heat conducting plate 114 is disposed at the top of the heat sink fins 111, and the second heat conducting plate 115 is disposed at the bottom of the heat sink fins 111. The top surface of the first heat conducting plate 114 and the bottom surface of the second heat conducting plate 115 are planar. The top surface of the first heat conducting plate 114 is used to connect to a heat conducting member. The planar top surface of the first heat conducting plate 114 ensures a close fit between the first heat conducting plate 114 and the heat conducting member, thereby improving heat conduction efficiency. Furthermore, the provision of the first heat conducting plate 114 allows for more uniform heat transfer to the heat sink 111, preventing localized hot spots within the fin heat sink 1. The bottom of the second heat conducting plate 115 is bonded to the heat sink pad, which in turn is bonded to the laptop case. This arrangement allows some of the heat within the fin heat sink 1 to be transferred to the outside world through a new heat dissipation path, thereby improving heat dissipation efficiency.

[0060] See also Figure 6 and Figure 7The present invention also proposes a heat dissipation structure 1000, which includes a fin heat sink 1. The specific structure of the fin heat sink 1 refers to the above-mentioned embodiment. Since the present heat dissipation structure 1000 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described in detail here. Among them, the fin heat sink 1 includes an air inlet 13, and the air guide 1211 is arranged near the air inlet 13. The heat dissipation structure 1000 also includes a heat source 2, a heat spreader 3, a heat pipe 4 and a fan 5. The heat spreader 3 is arranged in contact with the heat source 2 to absorb the heat generated by the heat source 2; the heat pipe 4 includes an evaporation section 41 and a condensation section 42. The evaporation section 41 is arranged in contact with the heat spreader 3, and the condensation section 42 is arranged in contact with the heat dissipation fin group 11; the fan 5 includes an air supply port 51, and the air supply port 51 is arranged corresponding to the air inlet 13. In this embodiment, heat generated by heat source 2 is transferred to evaporation section 41 of heat pipe 4 via vapor chamber 3. Heat source 2 includes heat-generating components such as a CPU, GPU, and graphics card. Thermal grease is provided between heat source 2 and vapor chamber 3 to fill the small gap between them. In this embodiment, vapor chamber 3 is made of one of the following materials: copper, aluminum, silver, silicon carbide, gold, or a copper-aluminum alloy. Heat in evaporation section 41 is transferred to condensation section 42, and from there to heat sink fins 111. The fin heat sink 1 includes an air inlet 13 and an air outlet that are relatively arranged. The fan 5 continuously blows out a cold air flow from the air supply port 51 to the air inlet 13. The cold air flow is evenly distributed into the fin heat sink 1 under the action of the air guide fins 121, and the cold air flow is converted into a turbulent state under the action of the air guide fins 121. After the cold air flow fully exchanges heat with the cooling fins 111, it is discharged to the outside of the laptop through the air outlet. This cycle is repeated to achieve the effect of continuously discharging heat from the inside of the laptop.

[0061] In one embodiment of the present invention, the distances between the strong wind zone 14, the transition zone 15 and the weak wind zone 16 and the heat source 2 increase in sequence. In this embodiment, the blades of the fan 5 rotate counterclockwise, so the closer to the heat source 2, the greater the wind force and the greater the gas flow rate, so that the strong wind zone 14 is set on the side close to the heat source 2, and the distances between the transition zone 15 and the weak wind zone 16 and the heat source 2 increase in sequence. In the fin heat sink 1, the closer the part to the heat source 2 is, the more heat it receives from the heat pipe 4. By bringing the strong wind zone 14 closer to the heat source 2, the heat can be more effectively and quickly taken away, because the strong wind zone 14 usually has a higher wind speed and air volume, which can quickly reduce the temperature near the heat source 2. The transition zone 15 and the weak wind zone 16 can gradually reduce the temperature, making the heat dissipation more uniform.

[0062] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A fin heat sink, characterized in that: include: A heat dissipation fin group, the heat dissipation fin group comprising a plurality of heat dissipation fins arranged in parallel, a heat dissipation air duct being provided between adjacent heat dissipation fins, the heat dissipation air duct comprising an inlet and an outlet arranged opposite to each other; Dividing the heat dissipation fin group into a strong wind area, a transition area and a weak wind area along the arrangement direction of the plurality of heat dissipation fins; Wind guide fins, at least some of the heat dissipation fins in the strong wind zone and the transition zone are connected to the wind guide fins, the wind guide fins comprising a wind guide portion, the wind guide portion being arranged obliquely in a direction from the strong wind zone to the weak wind zone and away from the inlet; The included angle formed between the air guide portion and the heat dissipation fins is defined as α, and α satisfies: α<90°.

2. The fin heat sink according to claim 1, wherein: As the direction from the strong wind area to the weak wind area is directed, the angle value of α gradually decreases.

3. The fin heat sink according to claim 1, wherein: The fin heat sink also includes an air guide fin group, the air guide fin group includes the air guide fins, the air guide fins include a base and the air guide part, the air guide part is installed on the base, the base is plugged into the heat dissipation duct, and the base and the heat dissipation fins are fitted together, and two adjacent bases are buckled and connected to each other, and the air guide fin group and the heat dissipation fin group are detachably connected.

4. The fin heat sink according to claim 3, wherein: The wind-guiding fin group further includes auxiliary fins, and the auxiliary fins are arranged in contact with the heat dissipation fins in the weak wind area.

5. The fin heat sink according to claim 4, wherein: The length of the base is greater than that of the heat dissipation fins. The base is plugged into the heat dissipation duct along a direction from the outlet to the inlet. At least some of the heat dissipation fins in the strong wind zone and the transition zone are provided with first air holes. The base, which is attached to the heat dissipation fins provided with the first air holes, is provided with second air holes. The first air holes are connected to the second air holes. The first air hole and the second air hole are arranged close to the inlet.

6. The fin heat sink according to claim 4, wherein: The length of the base is less than the length of the heat dissipation fins, the base is plugged into the heat dissipation duct along the direction from the inlet to the outlet, at least some of the heat dissipation fins in the strong wind zone and the transition zone are provided with first air holes, and the length of the base along the extension direction of the heat dissipation duct is less than the net distance from one end of the heat dissipation fin located at the inlet to the first air holes; The first air hole is arranged close to the inlet.

7. The fin heat sink according to claim 1, wherein: The heat dissipation fin group is integrally formed with the air guide portion, and at least some of the heat dissipation fins in the strong wind zone and the transition zone are provided with first air holes; The first air hole is arranged close to the inlet.

8. The fin heat sink according to claim 1, wherein: The heat dissipation fin group also includes a first heat conduction plate and a second heat conduction plate arranged opposite to each other, the first heat conduction plate and the second heat conduction plate are arranged perpendicular to the heat dissipation fins, the top and bottom of the heat dissipation fins are respectively connected to the first heat conduction plate and the second heat conduction plate, and the two ends of the air guide portion are respectively connected to the first heat conduction plate and the second heat conduction plate.

9. A heat dissipation structure, characterized in that: The heat sink comprises the fin heat sink according to any one of claims 1 to 8, wherein the fin heat sink comprises an air inlet, the air guide portion is arranged near the air inlet, and the heat dissipation structure further comprises: heat source; A vapor chamber, the vapor chamber being arranged in contact with the heat source to transfer heat generated by the heat source; A heat pipe, the heat pipe comprising an evaporation section and a condensation section, the evaporation section being bonded to the vapor chamber, and the condensation section being bonded to the heat sink assembly; The fan includes an air supply port, and the air supply port is arranged corresponding to the air inlet.

10. The heat dissipation structure according to claim 9, wherein: The distances between the strong wind zone, the transition zone and the weak wind zone of the fin heat sink and the heat source increase sequentially.

Images