Heat dissipation device and electronic device

Abstract

The application provides a heat dissipation device and electronic equipment, and belongs to the technical field of heat dissipation devices. The heat dissipation device comprises a mounting body, an exhaust fan and a turbulence tooth plate. The mounting body is provided with an air inlet and an air outlet. The exhaust fan is arranged in the mounting body to guide the airflow entering the air inlet to pass through the air outlet. The turbulence tooth plate comprises a main body part and a sawtooth part arranged on the side edge of the main body part. The main body part is connected with the mounting body, and the sawtooth part extends along the edge direction of at least one of the air inlet and the air outlet to cut the airflow. The heat dissipation device provided by the application increases the disturbance and mixing of the airflow by arranging the turbulence tooth plate, which helps to improve the heat dissipation efficiency and also facilitates noise reduction.

Description

Technical Field

[0001] This application relates to heat dissipation device technology, and more particularly to a heat dissipation device and electronic device. Background Technology

[0002] Cooling fans are essential components of electronic devices such as laptops and desktop computers, and are also a major source of noise during operation. With advancements in manufacturing technology, consumers are increasingly demanding higher performance from their devices, making fan noise reduction a key focus in device development.

[0003] In related technologies, in order to reduce fan noise, the shape of the fan blades is usually modified, such as increasing the curvature of the fan blades, adjusting the angle and width of the fan blades, etc. However, modifying the fan blades requires more precise manufacturing processes and materials, which increases production costs. Summary of the Invention

[0004] This application provides a heat dissipation device and an electronic device to solve the technical problem of excessive noise in heat dissipation devices in the related art.

[0005] On one hand, this application provides a heat dissipation device, including:

[0006] The mounting body has an air inlet and an air outlet;

[0007] An exhaust fan, disposed in the mounting body, guides the airflow entering the air inlet to exit through the air outlet;

[0008] The airflow deflector includes a main body and serrated portions disposed on the side edge of the main body. The main body is connected to the mounting body. The serrated portions extend along the edge direction of at least one of the air inlet and the air outlet to cut the airflow.

[0009] In one possible implementation, the mounting body includes a support frame and a cover plate disposed on the support frame, the air inlet is disposed on the cover plate, and the main body is detachably connected to the cover plate.

[0010] In one possible implementation, the cover plate is provided with a first mounting portion, and the main body portion is provided with a second mounting portion on the side facing the cover plate. The first mounting portion and the second mounting portion are engaged to fix the main body portion to the cover plate.

[0011] In one possible implementation, the first mounting portion and the second mounting portion are plugged into each other; or...

[0012] The first mounting part is a locking member rotatably mounted on the cover plate, and the second mounting part is a slot provided on the main body. After the locking member rotates, it fits into the slot so that the main body is fixed to the cover plate.

[0013] In one possible implementation, the main body is constructed with a slot extending along its plane, the serrated portion and the slot are located at opposite ends of the main body, and the main body is inserted into the cover plate through the slot.

[0014] In one possible implementation, the swerve is rotatably connected to the cover plate, and the swerve has a turbulence state in which the serrated portion is rotated to be close to the air outlet, and an adjustment state in which the serrated portion is flipped away from the air outlet.

[0015] In one possible implementation, the mounting body is provided with a plurality of the aforementioned baffles, which are arranged symmetrically around at least one of the air inlet and the air outlet.

[0016] In one possible implementation, the cover plate has a plurality of spaced recesses around the air inlet, and at least one of the main body portions is engaged with the recesses.

[0017] In one possible implementation, the mounting body is a stamped part, and the baffle tooth plate is an injection molded part.

[0018] On the other hand, this application provides an electronic device, including: a device body and a heat dissipation device as described in any of the above claims.

[0019] The heat dissipation device and electronic device provided in this application utilize an exhaust fan to promote airflow within the mounting body. The main body of the baffle plate is connected to the mounting body, and the serrated portion extends along the edge direction of at least one of the air inlet and air outlet to cut the airflow. The serrated portion of the baffle plate cuts the airflow, breaking the laminar boundary layer of the airflow, thereby preventing turbulence in the airflow at at least one of the air inlet and air outlet and reducing the overall noise of the heat dissipation device. In addition, since the baffle plate is directly connected to the mounting body, compared to directly constructing the serrations integrally on the mounting body, the main body of the baffle plate can enhance the overall structural strength of the mounting body and improve the operational stability of the heat dissipation device. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1 This is a schematic diagram of the heat dissipation device in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of an exemplary structure of the turbulence toothed plate in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of an exemplary assembly structure of the baffle tooth plate and cover plate in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of an exemplary assembly structure of the baffle tooth plate and cover plate in an embodiment of this application;

[0025] Figure 5 This is a side cross-sectional view of the turbulence toothed plate in an embodiment of this application.

[0026] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments.

[0027] Explanation of reference numerals in the attached figures

[0028] 100 - Mounting body; 101 - Air inlet; 102 - Air outlet; 103 - Cover plate; 1041 - Columnar protrusion; 1042 - Locking element; 105 - Recess;

[0029] 200 - spoiler tooth plate; 201 - main body; 202 - serrated part; 2031 - columnar groove; 2032 - slot; 2033 - slot. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0034] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0035] As mentioned in the background section, electronic devices such as laptops and desktop computers generate significant heat, requiring cooling devices to circulate air and improve airflow. However, the fans in these cooling devices often generate more noise, negatively impacting the user experience.

[0036] Due to the asymmetrical design of the fan in a laptop, the airflow is highly unevenly distributed, with a large amount of airflow concentrated at the inlet. This area has greater kinetic energy than other parts and is the high-speed zone for fan airflow, resulting in a noticeable difference in airflow distribution.

[0037] Traditional noise reduction designs mainly focus on modifying the shape of the fan blades. However, modifying the shape of the fan blades is technically difficult, and once damaged, the entire heat dissipation device needs to be replaced, which is costly and not conducive to subsequent maintenance.

[0038] Based on the above description, one or more embodiments of this application provide a heat dissipation device and an electronic device. In the heat dissipation device, an exhaust fan is used to promote airflow within the mounting body. The main body of the baffle plate is connected to the mounting body, and the serrated portion extends along the edge direction of at least one of the air inlet and air outlet to cut the airflow. The serrated portion of the baffle plate cuts the airflow, breaking the laminar boundary layer of the airflow, thereby preventing turbulence in the airflow at at least one of the air inlet and air outlet and reducing the overall noise of the heat dissipation device. In addition, since the baffle plate is directly connected to the mounting body, compared with directly constructing the serrations integrally on the mounting body, the main body of the baffle plate can enhance the overall structural strength of the mounting body and improve the stability of the heat dissipation device.

[0039] The following description, in conjunction with the accompanying drawings, illustrates the solutions of the embodiments of this application.

[0040] like Figure 1 As shown, the heat dissipation device in this embodiment includes a mounting body 100, an exhaust fan, and a baffle plate 200.

[0041] The mounting body 100 has an air inlet 101 and an air outlet 102. An exhaust fan is disposed in the mounting body 100 to guide the airflow entering the air inlet 101 to pass through the air outlet 102. The baffle plate 200 includes a main body 201 and a serrated part 202 disposed on the side edge of the main body 201. The main body 201 is connected to the mounting body 100. The serrated part 202 extends along the edge direction of at least one of the air inlet 101 and the air outlet 102 to cut the airflow.

[0042] As can be seen from the above description, the heat dissipation device of this application embodiment utilizes the air inlet 101 and air outlet 102 on the mounting body 100. After the exhaust fan guides the airflow into the air inlet 101, it is discharged through the air outlet 102. During this process, the serrated portion 202 on the baffle plate 200 can cut the airflow, and the cutting effect plays a baffle role, preventing the airflow from turbulent at at least one of the air inlet 101 and air outlet 102, and reducing the noise during the exhaust process of the exhaust fan. In addition, since the baffle plate 200 is directly connected to the mounting body 100, the connection between the baffle plate 200 and the mounting body 100 can also enhance the overall structural strength of the mounting body 100 by utilizing the baffle plate 200, thereby improving the overall stability of the heat dissipation device.

[0043] In the embodiments of this application, the heat dissipation device is generally a cooling fan. For example, the heat dissipation device is installed in electronic devices with heat-generating characteristics, such as laptops, desktop computers, communication equipment, antenna equipment, or automotive electronic devices, and uses airflow circulation to remove heat from the electronic devices.

[0044] Generally, the mounting body 100 of the heat dissipation device includes a support frame and a cover plate 103 disposed on the support frame. The air inlet 101 is disposed on the cover plate 103, and the main body 201 is detachably connected to the cover plate 103.

[0045] For different application scenarios, the positions of the air outlet 102 and air inlet 101 in the mounting body 100 may change. For example, when the heat dissipation device is used as a heat dissipation component in a laptop, the support frame forms a cavity to accommodate the exhaust fan through two mating cover plates 103. The upper cover plate 103 has an air inlet 101 that communicates with the cavity. Considering the air outlet position design of the laptop, the air outlet 102 of the mounting body 100 is generally located at the side end of the support frame.

[0046] In some embodiments, in order to enhance air circulation, heat dissipation fins are also provided at the air outlet 102 of the mounting body 100 to improve heat dissipation.

[0047] It should be noted that, in this embodiment of the application, for example, the baffle 200 is disposed at the air inlet 101 of the mounting body 100, that is, the baffle 200 is fixed on the upper cover plate 103 of the support frame. As an alternative implementation, the baffle 200 may also be disposed at the air outlet 102 of the mounting body 100, or the baffle 200 may be disposed on both the air inlet 101 and the air outlet 102 of the mounting body 100. This will not be described in detail in this embodiment of the application.

[0048] The cover plate 103 is provided with a first mounting part, and the main body 201 is provided with a second mounting part on the side facing the cover plate 103. The first mounting part and the second mounting part are engaged to fix the main body 201 on the cover plate 103.

[0049] Here, there are various ways to engage the first mounting part and the second mounting part, as long as the spoiler tooth plate 200 and the cover plate 103 can be connected in a detachable manner.

[0050] For example, the first mounting part and the second mounting part are plugged into each other.

[0051] like Figure 1 and Figure 2As shown, a plurality of first mounting portions are spaced around the periphery of the air inlet 101 on the cover plate 103. The first mounting portions are specifically columnar protrusions 1041 provided on the cover plate 103. Correspondingly, a plurality of second mounting portions are spaced on one side of the main body 201 of the baffle tooth plate 200. The second mounting portions are specifically columnar grooves 2031 provided on the baffle tooth plate 200. The side of the baffle tooth plate 200 with the columnar grooves 2031 is connected to the cover plate 103. The baffle tooth plate 200 is fixed on the cover plate 103 by the insertion and engagement of the columnar protrusions 1041 and the columnar grooves 2031.

[0052] Furthermore, in some embodiments, the columnar protrusion 1041 and the columnar groove 2031 are interference fits. For example, the columnar protrusion 1041 is a conical protrusion, and the columnar groove 2031 is slightly smaller than the outermost dimension of the columnar protrusion 1041. During assembly, the second mounting portion on the spoiler toothed plate 200 is forcefully inserted into the position corresponding to the first mounting portion to ensure the tightness of the connection between the spoiler toothed plate 200 and the cover plate 103.

[0053] Of course, the structures on the first mounting part and the second mounting part can be interchanged. For example, the first mounting part is a columnar groove 2031 provided on the cover plate 103, and the second mounting part is a columnar protrusion 1041 provided on the baffle tooth plate 200.

[0054] As an alternative implementation, the first mounting part is a threaded hole on the cover plate 103, and the second mounting part is a threaded post passing through the spoiler toothed plate 200. The second mounting part is threadedly connected to the first mounting part to enhance the fastening effect of the spoiler toothed plate 200 and the cover plate 103. It should be noted that the columnar groove 2031 and the threaded post on the spoiler toothed plate 200 can be used together. That is, the spoiler toothed plate 200 is provided with both columnar groove 2031 and threaded post, and the cover plate 103 is provided with both columnar protrusion 1041 and threaded hole. After aligning the columnar protrusion 1041 and columnar groove 2031, the threaded post is threadedly connected to the threaded hole.

[0055] Generally, multiple columnar protrusions 1041 and columnar grooves 2031 are set at intervals to cooperate, and a threaded post and a threaded hole are set to cooperate to minimize installation interference of the threaded post.

[0056] For example, such as Figure 2 and Figure 4 As shown, the first mounting part is a locking member 1042 rotatably mounted on the cover plate 103, and the second mounting part is a slot 2032 mounted on the main body 201. After the locking member 1042 rotates, it fits into the slot 2032 so that the main body 201 is fixed on the cover plate 103.

[0057] In the above embodiments, the locking member 1042 and the cover plate 103 are connected by a common pivot shaft. The slot 2032 on the main body 201 can be stepped, protruding or recessed relative to the main body 201. When the spoiler toothed plate 200 is placed on the cover plate 103, the locking member 1042 rotates and engages with the slot 2032, thus fixing the spoiler toothed plate 200 on the cover plate 103. Furthermore, the locking member 1042 and the cover plate 103 are elastically rotatably connected. For example, a torsion spring is sleeved on the pivot shaft, with one end of the torsion spring fixed to the locking member 1042 and the other end abutting against the cover plate 103. The torsion spring has an elastic force that drives the locking member 1042 to press against the slot 2032. This arrangement can further enhance the engaging effect of the locking member 1042 on the main body 201.

[0058] Depend on Figure 4 It can also be seen that the rotation direction of the locking member 1042 can be flexibly set according to the assembly space and position. For example, when the rotating shaft is connected, the locking member 1042 can move closer to or away from the cover plate 103 along the axial direction of the air inlet 101. When the locking member 1042 moves away from the cover plate 103, it makes way for the space to install the baffle toothed plate 200. The baffle toothed plate 200 is placed on the cover plate 103. At this time, when the external force is removed, the locking member 1042 moves closer to the cover plate 103 under the elastic force, thereby pressing against the slot 2032 of the baffle toothed plate 200, thus fixing the baffle toothed plate 200.

[0059] For example, multiple locking elements 1042 can be provided at intervals along the periphery of the air inlet 101, and multiple slots 2032 are provided on the main body 201 of the deflector 200 corresponding to the positions of the locking elements 1042. The locking elements 1042 at multiple positions can further improve the fixing effect of the deflector 200.

[0060] As an alternative implementation method, such as Figure 5 As shown, the main body 201 has a slot 2033 extending along its plane. The serrated part 202 and the slot 2033 are located at the two ends of the main body 201, and the main body 201 is inserted into the cover plate 103 through the slot 2033.

[0061] In the above embodiment, the slot 2033 on the main body 201 is similar to a clamp. The slot 2033 is directly inserted into the edge of the cover plate 103. Furthermore, the slot 2033 and the edge of the cover plate 103 can also be connected by an interference fit. For example, the width of the slot 2033 gradually decreases inward along the insertion direction to ensure a tight connection between the main body 201 and the cover plate 103.

[0062] For laptops and other similar precision devices, fans are prone to dust accumulation during daily use. In the above embodiments, the main body 201 and the cover plate 103 are detachably connected by the cooperation of the first mounting part and the second mounting part. The detachable design allows users to easily remove the baffle plate 200, thereby facilitating the cleaning and maintenance of the heat dissipation device and the baffle plate 200, and preventing the accumulation of dust and dirt from affecting the heat dissipation effect. In addition, the detachable design also makes it easy to directly replace a single baffle plate 200 without replacing the entire heat dissipation device, saving costs and facilitating maintenance.

[0063] In addition, the design manufacturer can also design multiple baffle plates 200 with different tooth shapes and pitches, so that users can personalize the shape of the baffle plates 200 on the heat dissipation device to meet the needs of users in different scenarios.

[0064] It should be noted that in some embodiments, the mounting body 100 is a stamped part, and the baffle toothed plate 200 is an injection molded part. Generally, the cover plate 103 on the mounting body 100 is integrally stamped.

[0065] The opening edge of the cover plate 103 is integrally formed with a serrated shape, which is difficult to manufacture and not conducive to large-scale mass production. However, in this embodiment, since the fan cover plate 103 does not have a related structure to cooperate with the baffle toothed plate 200, the baffle toothed plate 200 can be directly fixed to the cover plate 103. The baffle toothed plate 200 can be prepared by injection molding, which is simple and highly repeatable. Compared with the method of integrally forming a serrated part on the opening edge of the cover plate 103, the manufacturing difficulty can be significantly reduced. The fan cover plate 103 produced by conventional processes such as stamping can also be equipped with the baffle toothed plate 200 in this embodiment, making the baffle toothed plate 200 in this embodiment more adaptable and versatile.

[0066] In some embodiments, such as Figure 3 As shown, the swivel toothed plate 200 is directly rotatably connected to the cover plate 103. The swivel toothed plate 200 has a swivel state where the serrated part 202 is rotated close to the air outlet 102, and an adjustment state where the serrated part 202 is flipped away from the air outlet 102.

[0067] The aforementioned baffle 200 is not detachably connected to the cover plate 103, but the baffle 200 can be flipped relative to the cover plate 103. It should be noted that the baffle 200 and the cover plate 103 are relatively stationary in their baffle and adjustment states to prevent the baffle 200 from being passively rotated due to airflow influence. For example, by adjusting the tightness of the rotating shaft, the rotation of the baffle 200 and the cover plate 103 has a certain frictional force. When the baffle 200 switches states, the external force must be large enough to overcome this frictional force and drive the baffle 200 to rotate, but the airflow is insufficient to drive the baffle 200 to rotate.

[0068] By rotating the baffle 200 and the cover plate 103, users can more easily adjust the usage status of the baffle 200. For some places that require low noise, the baffle 200 can be switched to the baffle state to reduce noise as much as possible. For places that require high-performance operation and have serious heat generation, the baffle 200 can be switched to the adjustment state, so that the airflow can enter the air inlet 101 more easily, thereby meeting the user's personalized use.

[0069] In some embodiments, such as Figure 4 As shown, the mounting body 100 is provided with a plurality of baffles 200, which are arranged symmetrically around at least one of the air inlet 101 and the air outlet 102.

[0070] Here, the fixing method of the multiple spoiler teeth 200 on the mounting body 100 can be set with reference to the aforementioned detachable structure method.

[0071] Alternatively, the cover plate 103 may have multiple recesses 105 arranged at intervals around the air inlet 101, with at least one main body 201 engaging with each recess 105. When multiple baffles 200 are provided, each baffle 200 and each recess 105 is provided in a one-to-one correspondence. Specifically, the cover plate 103 may have five recesses 105 as shown in the figure. Of the five recesses 105, only one baffle 200 may be provided, or multiple baffles 200 may be provided. Each recess 105 may have a locking member 1042 in its corresponding area. The locking member 1042 engages with the baffle 200 to fix the baffle 200 in the recess 105.

[0072] In some scenarios, each of the five recesses 105 is equipped with a baffle 200. That is, the serrated portions 202 on the baffle 200 completely cover the edge of the air inlet 101. The design of multiple baffles 200 allows for flexible adjustment of the shape and coverage of the serrated portions 202 at the air inlet 101, so that the airflow entering the air inlet 101 is cut by more serrated portions 202, thereby minimizing noise. Of course, by reducing the number of baffles 200, the airflow effect can also be improved while reducing noise. Users can flexibly choose the number of baffles 200.

[0073] It should be noted that, in practical applications, the solution of partially setting serrated sections 202 around the air inlet 101 is more targeted in modifying the gas flow field and more conducive to reducing overall noise than the solution of having serrated sections 202 around the entire air inlet 101. In addition, it is also conducive to reducing material costs. Therefore, generally, it is sufficient to set one to three baffles 200 in the five recesses 105.

[0074] like Figure 1 As shown, in some embodiments, the air outlet 102 is an arc-shaped opening or a rectangular opening, and the serrated portion 202 is configured to match the shape of the air outlet 102.

[0075] Preferably, the air inlet 101 on the cover plate 103 is a circular opening, and the recess 105 is arranged in a ring shape around the air inlet 101. The multiple baffles 200 are all the same size and shape. This arrangement facilitates standardized design and manufacturing, improves the versatility of the baffles 200 in different recesses 105, minimizes the manufacturing difficulty, and facilitates the large-scale production of the heat dissipation device.

[0076] As can be seen from the above description, since the baffle 200 is attached to the cover plate 103, the baffle 200 increases the thickness of the cover plate 103 in the air inlet 101 area, enhances the overall support capacity of the cover plate 103, and helps to improve the deformation problem caused by insufficient support of the cover plate 103.

[0077] Another embodiment of this application provides an electronic device, including a device body and a heat dissipation device as described above.

[0078] Generally, the device itself can be a laptop, desktop computer, communication equipment, antenna equipment, or automotive electronic equipment, etc., which have heat-generating characteristics. The heat dissipation device is installed in the electronic equipment to dissipate heat from the device itself and provide air circulation.

[0079] Since the electronic device provided in this application includes a heat dissipation device as described above, it has all the advantages of a heat dissipation device.

[0080] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0081] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A heat dissipation device, characterized in that, include: The mounting body (100) has an air inlet (101) and an air outlet (102). An exhaust fan is provided in the mounting body (100) to guide the airflow entering the air inlet (101) out through the air outlet (102); The baffle plate (200) includes a main body (201) and a serrated portion (202) disposed on the side edge of the main body (201). The main body (201) is connected to the mounting body (100). The serrated portion (202) extends along the edge direction of at least one of the air inlet (101) and the air outlet (102) to cut the airflow.

2. The heat dissipation device according to claim 1, characterized in that, The mounting body (100) includes a support frame and a cover plate (103) disposed on the support frame. The air inlet (101) is disposed on the cover plate (103). The main body (201) is detachably connected to the cover plate (103).

3. The heat dissipation device according to claim 2, characterized in that, The cover plate (103) is provided with a first mounting part, and the main body (201) is provided with a second mounting part on the side facing the cover plate (103). The first mounting part and the second mounting part are engaged to fix the main body (201) on the cover plate (103).

4. The heat dissipation device according to claim 3, characterized in that, The first mounting part and the second mounting part are plugged into each other; or... The first mounting part is a locking member (1042) rotatably mounted on the cover plate (103), and the second mounting part is a slot (2032) mounted on the main body (201). After the locking member (1042) rotates, it fits into the slot (2032) so that the main body (201) is fixed on the cover plate (103).

5. The heat dissipation device according to claim 2, characterized in that, The main body (201) is constructed with a slot (2033) extending along its plane. The serrated part (202) and the slot (2033) are located at the two ends of the main body (201), and the main body (201) is inserted into the cover plate (103) through the slot (2033).

6. The heat dissipation device according to claim 2, characterized in that, The turbulence toothed plate (200) is rotatably connected to the cover plate (103). The turbulence toothed plate (200) has a turbulence state in which the serrated part (202) is rotated to be close to the air outlet (102), and an adjustment state in which the serrated part (202) is flipped away from the air outlet (102).

7. The heat dissipation device according to any one of claims 2 to 6, characterized in that, The mounting body (100) is provided with a plurality of the aforementioned baffles (200), which are arranged symmetrically around at least one of the air inlet (101) and the air outlet (102).

8. The heat dissipation device according to claim 7, characterized in that, The cover plate (103) is provided with a plurality of recesses (105) arranged at intervals around the air inlet (101) in the circumferential direction, and at least one of the main body parts (201) is engaged with the recesses (105).

9. The heat dissipation device according to any one of claims 1 to 6, characterized in that, The mounting body (100) is a stamped part, and the baffle tooth plate (200) is an injection molded part.

10. An electronic device, characterized in that, It includes the device body and the heat dissipation device as described in any one of claims 1 to 9.

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