Heat dissipation device and electronic equipment

Abstract

The invention discloses a heat dissipation device and electronic equipment, and relates to the technical field of heat dissipation. The heat dissipation device comprises a shell, a fan elastic film and an electromagnetic assembly. Vent holes are formed in the shell wall of the shell; the fanning elastic film is located in the shell so as to divide the interior of the shell into a containing space, and the containing space is communicated with the vent hole; one of the shell and the fan-shaped elastic film has magnetism, and the other one of the shell and the fan-shaped elastic film is connected with the electromagnetic assembly. According to the embodiment of the invention, the problem of high noise in the heat dissipation process can be solved.

Description

Technical Field

[0001] The present application relates to the field of heat dissipation technology, and in particular to heat dissipation devices and electronic equipment. Background Art

[0002] As the performance of electronic devices increases, the heat generated by the electronic devices also increases.

[0003] In order to achieve heat dissipation of electronic devices, a heat dissipation device is configured in the electronic devices. In the related art, heat dissipation devices are mainly divided into active heat dissipation and passive heat dissipation. For active heat dissipation, the heat dissipation device is a fan, and the airflow generated by the fan dissipates the heat generated by the electronic device.

[0004] However, since the fan has a rotating mechanical structure, the fan generates noise when working, which is not friendly to electronic devices directly facing customers. Summary of the invention

[0005] The embodiment of the present application provides a heat dissipation device and an electronic device to solve the problem of noise during operation of a fan. The technical solution is as follows:

[0006] In a first aspect, a heat dissipation device is provided, which includes a shell, a fanning elastic membrane and an electromagnetic assembly. The shell is used to accommodate the fanning elastic membrane and the electromagnetic assembly. The shell wall of the shell has an air vent for allowing airflow to flow between the internal space and the external space of the shell. The fanning elastic membrane is located inside the shell, and through the fanning elastic membrane, a accommodating space can be separated in the internal space of the shell, and the accommodating space is used to accommodate various functional parts. The accommodating space is connected to the vent, so that the accommodating space can be connected to the external space of the shell through the vent for airflow. One of the shell and the fanning elastic membrane has magnetism, and the other of the shell and the fanning elastic membrane is connected to the electromagnetic assembly. After the electromagnetic component is energized and generates a magnetic field, the fanning elastic membrane and the shell can be attracted or repelled under the action of magnetic force, causing the fanning elastic membrane to produce elastic deformation, thereby driving the gas flow in the accommodating space, so that the high-temperature gas in the accommodating space is discharged to the external space, while the low-temperature gas in the external space is sucked into the accommodating space, thereby playing a role of heat exchange, thereby achieving the purpose of heat dissipation of the functional parts in the accommodating space.

[0007] The heat dissipation device provided in the embodiment of the present application has at least the following effects:

[0008] Functional parts are accommodated in the accommodation space so that the heat generated by the functional parts during operation can be dissipated into the accommodation space. After the electromagnetic component is energized, different magnetic fields will be generated according to the direction of the current, so that the fanning elastic membrane and the shell will attract or repel each other, causing the fanning elastic membrane to produce elastic deformation in different directions, and the fanning elastic membrane begins to fan. In one deformation direction, the fanning elastic membrane can discharge the high-temperature gas in the accommodation space to the external space, while in another deformation direction, the fanning elastic membrane can inhale the low-temperature gas in the external space into the accommodation space. Through the coordination of exhaust and intake, the high-temperature gas in the accommodation space and the low-temperature gas in the external space can be exchanged, thereby achieving the purpose of heat dissipation of the functional parts in the accommodation space.

[0009] During the entire heat dissipation process, there is no involvement of rotating mechanical structure, so no noise is generated, effectively solving the problem of noise during fan operation.

[0010] In one implementation of the present application, both sides of the fanning elastic film have active spaces, thereby ensuring that the fanning elastic film has sufficient fanning space and avoiding interference between the fanning elastic film and other structures during the fanning process. In addition, since the active space on one side of the fanning elastic film is the accommodating space, the fanning elastic film can directly fan the gas in the accommodating space, effectively improving the heat dissipation efficiency.

[0011] In one implementation of the present application, the outer edge of the fanning elastic membrane is connected to the inner wall of the shell. With such a design, the shell provides a stable installation base for the fanning elastic membrane, so that the fanning elastic membrane can be reliably fanned in the shell, and the fanning elastic membrane will not fail due to separation from the installation base. In addition, since the outer edge of the fanning elastic membrane is connected to the inner wall of the shell, this connection method can largely avoid affecting the fanning of the middle part of the fanning elastic membrane, thereby ensuring the fanning effect of the fanning elastic membrane.

[0012] In one implementation of the present application, there are two ways of connecting the outer edge of the fanning elastic membrane to the inner wall of the shell. The first connection method is that the outer edge of the fanning elastic membrane is adhered to the inner wall of the shell. In this connection method, adhesive is used to directly connect the outer edge of the fanning elastic membrane to the inner wall of the shell, which is simple and has high connection efficiency. The second connection method is that the outer edge of the fanning elastic membrane is nailed to the inner wall of the shell. In this connection method, nails are used to nail the outer edge of the fanning elastic membrane to the inner wall of the shell, thereby ensuring the stability of the connection between the fanning elastic membrane and the shell.

[0013] In one implementation of the present application, the fanning elastic film is magnetic, and the electromagnetic component is connected to the shell and is located on one side of the fanning elastic film. With such a design, the shell is used as the installation base of the electromagnetic component, which can reduce the bearing load of the fanning elastic film and facilitate the fanning of the fanning elastic film.

[0014] In one implementation of the present application, the electromagnetic component is spaced from the fanning elastic film. Such arrangement of the position of the electromagnetic component can ensure that the magnetic field generated by the electromagnetic component can act on the fanning elastic film, and can also avoid the electromagnetic component from interfering with the fanning of the fanning elastic film. In addition, the electromagnetic component is located outside the accommodation space, which will neither block the flow of gas nor occupy the accommodation space, so that more functional parts can be accommodated in the accommodation space.

[0015] In one implementation of the present application, the electromagnetic assembly includes a plurality of electromagnetic parts. By providing a plurality of the electromagnetic parts, it is possible to ensure that the electromagnetic assembly generates a sufficiently strong magnetic field to drive the fanning elastic film to fan a sufficient amplitude, thereby ensuring the heat dissipation effect of the heat dissipation device. In addition, the plurality of electromagnetic parts are arranged at intervals on a plane parallel to the fanning elastic film, so that the electromagnetic parts do not affect each other, which is conducive to generating a uniform magnetic field.

[0016] In one implementation of the present application, the plurality of electromagnetic components are connected to the shell wall of the shell. This design is the first assembly method of the electromagnetic components in the heat dissipation device, and the shell provides a stable installation foundation for the plurality of electromagnetic components, so that the plurality of electromagnetic components can be stably installed on the shell.

[0017] In one implementation of the present application, there are two ways of connecting the electromagnetic component to the shell. The first connection method is that the electromagnetic component is connected to the inner wall of the shell. In this connection method, the electromagnetic component is directly connected to the surface of the shell, which is simple and has a high connection efficiency. In addition, since the electromagnetic component is located on the surface of the shell, it can be closer to the fanning elastic membrane, which is beneficial for the magnetic field generated by the electromagnetic component to act on the fanning elastic membrane. The second connection method is that the electromagnetic component is embedded in the shell wall of the shell. In this connection method, the electromagnetic component is located inside the shell wall of the shell, so that the electromagnetic component is fully protected. In addition, since the electromagnetic component is located inside the shell wall of the shell, the space inside the shell wall of the shell can be further utilized, which is beneficial to the lightweight design of the heat dissipation device.

[0018] In one implementation of the present application, the electromagnetic component also includes a carrier, and the carrier is used to provide an installation base for the electromagnetic component. A plurality of the electromagnetic components are connected to the carrier, and the carrier is connected to the inner wall of the shell. Such a design is a second assembly method of the electromagnetic component in the heat dissipation device, and the electromagnetic component is not directly connected to the shell, but is indirectly connected to the shell through the carrier. Since the electromagnetic component is independent of the shell, on the one hand, the design of the shell is simpler, and on the other hand, the installation of the electromagnetic component in the shell is more flexible and can adapt to different design requirements.

[0019] In one implementation of the present application, the electromagnetic component is a conductive coil. Designed in this way, when a current in one direction is connected to the conductive coil, the conductive coil generates a magnetic field with magnetic flux lines in one direction. Under the action of the magnetic field, a suction force in one direction is generated on the fanning elastic film, so that the fanning elastic film produces elastic deformation in the corresponding direction to discharge the gas in the accommodating space from the external space. When a current in another direction is connected to the conductive coil, the conductive coil generates a magnetic field with magnetic flux lines in another opposite direction. Under the action of the magnetic field, a suction force in another opposite direction is generated on the fanning elastic film, so that the fanning elastic film produces elastic deformation in the corresponding direction to suck the gas in the external space into the accommodating space. By regularly changing the direction of the current connected to the conductive coil, the fanning elastic film can be controlled to fan regularly, so that the gas in the accommodating space flows, and then the functional parts in the accommodating space are cooled.

[0020] In one implementation of the present application, the shell wall of the housing has a plurality of vent holes, and the plurality of vent holes are arranged at intervals along the outer edge of the fan elastic membrane. Such a design provides more gas circulation channels, which is conducive to the gas circulation between the accommodating space and the external space, thereby improving the heat dissipation performance of the heat dissipation device.

[0021] In a second aspect, an electronic device is provided, the electronic device comprising a functional component and the heat dissipation device according to the first aspect. The functional component is located in the accommodation space and can dissipate heat under the circulation of gas. In addition, the functional component is spaced from the fan elastic film so that the functional component does not interfere with the fanning of the fan elastic film.

[0022] The electronic device provided in the embodiment of the present application has at least the following effects:

[0023] Functional parts are accommodated in the accommodation space so that the heat generated by the functional parts during operation can be dissipated into the accommodation space. After the electromagnetic component is energized, different magnetic fields will be generated according to the direction of the current, thereby attracting or repelling the fanning elastic membrane, causing the fanning elastic membrane to produce elastic deformation in different directions, and the fanning elastic membrane begins to fan. In one deformation direction, the fanning elastic membrane can discharge the high-temperature gas in the accommodation space to the external space, while in another deformation direction, the fanning elastic membrane can inhale the low-temperature gas in the external space into the accommodation space. Through the coordination of exhaust and intake, the high-temperature gas in the accommodation space and the low-temperature gas in the external space can be exchanged, thereby achieving the purpose of heat dissipation of the functional parts in the accommodation space.

[0024] During the entire heat dissipation process, there is no involvement of rotating mechanical structure, so no noise is generated, effectively solving the problem of noise generated by the fan during operation.

[0025] In one implementation of the present application, the fanning elastic membrane is magnetic, and there are two arrangements of the functional parts relative to the electromagnetic component. In the first arrangement, the electromagnetic component is located on the side of the fanning elastic membrane that is away from the functional part. In this arrangement, the electromagnetic component is away from the functional part and close to the fanning elastic membrane, and the electromagnetic component can better drive the fanning elastic membrane to fan through the magnetic field generated by itself. In the second arrangement, the electromagnetic component is located on the side of the functional part that is away from the fanning elastic membrane. In this arrangement, the electromagnetic component is close to the functional part and away from the fanning elastic membrane, which is beneficial to ensure the size of the activity space and avoids interference between the fanning elastic membrane and the electromagnetic component when flapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a heat dissipation device provided in an embodiment of the present application;

[0027] Figure 2 A cross-sectional view of a heat dissipation device provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the heat dissipation process of the heat dissipation device provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the heat dissipation process of the heat dissipation device provided in an embodiment of the present application;

[0030] Figure 5 A top view of a heat dissipation device provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of the structure of the electromagnetic component provided in the embodiment of the present application;

[0032] Figure 7 A cross-sectional view of a heat dissipation device provided in an embodiment of the present application;

[0033] Figure 8 A cross-sectional view of a heat dissipation device provided in an embodiment of the present application;

[0034] Fig. 9 A cross-sectional view of a heat dissipation device provided in an embodiment of the present application;

[0035] Fig.10 A cross-sectional view of an electronic device provided in an embodiment of the present application;

[0036] Fig.11 A cross-sectional view of an electronic device provided in an embodiment of the present application.

[0037] Legend:

[0038] 10. Shell;

[0039] 110. Ventilation hole;

[0040] 120. Accommodation space;

[0041] 130. Activity space;

[0042] 141, first cover plate; 142, second cover plate; 143, side panel; 144, inner flange; 145, mounting groove; 146, buckle;

[0043] 20. Fan the elastic membrane;

[0044] 30. Electromagnetic components;

[0045] 310, electromagnetic component; 311, positive electrode wire; 312, negative electrode wire; 313, coil;

[0046] 320, bearing member;

[0047] 100. Functional parts. DETAILED DESCRIPTION

[0048] The terms used in the implementation section of the present application are only used to explain the embodiments of the present application and are not intended to limit the present application.

[0049] As the performance of electronic devices increases, the heat generated by the electronic devices also increases.

[0050] In order to achieve heat dissipation of electronic equipment, a heat dissipation device is configured in the electronic equipment. In the related art, the heat dissipation device is mainly divided into active heat dissipation and passive heat dissipation.

[0051] For active heat dissipation, the heat dissipation device is a rotating mechanical device such as a fan, which dissipates the heat generated by the electronic device through the airflow generated by the fan. However, since the fan has a rotating mechanical structure, the fan will generate noise when working, which is not friendly to electronic devices directly facing customers. In addition, the high-speed rotating mechanical mechanism may also have mechanical failures and is not very reliable.

[0052] For passive cooling, the cooling device is a cooling fin, which is made of a material with high thermal conductivity. The heat is dissipated to the outside through the cooling fin, thereby playing a role in cooling. Although passive cooling does not generate noise, its cooling effect is poor and cannot meet the cooling needs of high-performance electronic equipment.

[0053] In order to solve the above technical problems, the embodiment of the present application provides a heat dissipation device. Figure 1 is a schematic diagram of the structure of the heat dissipation device, see Figure 1 The heat dissipation device includes a housing 10 , and a housing wall of the housing 10 has a vent hole 110 .

[0054] Figure 2 is a cross-sectional view of the heat dissipation device, combined with Figure 2 In this embodiment, the heat dissipation device includes a fan elastic film 20 and an electromagnetic assembly 30. The fan elastic film 20 is located inside the housing 10 to separate a receiving space 120 inside the housing 10, and the receiving space 120 is connected to the vent hole 110. The fan elastic film 20 has magnetism, and the electromagnetic assembly 30 is connected to the housing 10.

[0055] Among them, the shell 10 is used to accommodate the fanning elastic membrane 20 and the electromagnetic component 30. The shell wall of the shell 10 has a vent 110 for allowing airflow to flow between the internal space and the external space of the shell 10. The fanning elastic membrane 20 is located inside the shell 10. By fanning the elastic membrane 20, a accommodating space 120 can be separated in the internal space of the shell 10. The accommodating space 120 is used to accommodate various functional parts 100, and the functional parts 100 are heat sources. The accommodating space 120 is connected to the vent 110, so that the accommodating space 120 can be connected to the external space of the shell 10 through the vent 110 to facilitate airflow. The electromagnetic component 30 is connected to the shell 10. The electromagnetic component 30 is located on one side of the fanning elastic membrane 20 and is used to drive the fanning elastic membrane 20 to fan through the magnetic field generated after being energized.

[0056] The functional component 100 is accommodated in the accommodation space 120, so that the heat generated by the functional component 100 when working can be dissipated in the accommodation space 120. After the electromagnetic component 30 is energized, it will generate different magnetic fields according to the different directions of the current, thereby attracting or repelling the flap elastic film 20, causing the flap elastic film 20 to produce elastic deformation in different directions, and the flap elastic film 20 begins to flap back and forth in two directions. In one deformation direction, the flap elastic film 20 can discharge the high-temperature gas in the accommodation space 120 to the external space (see Figure 3 ), and in the other deformation direction, the flapping elastic film 20 can make the low-temperature gas in the external space be sucked into the accommodating space 120 (see Figure 4 ). Through the coordination of exhaust and intake, the high-temperature gas in the accommodating space 120 and the low-temperature gas in the external space can exchange heat, thereby achieving the purpose of heat dissipation of the functional parts 100 in the accommodating space 120.

[0057] Compared with the active heat dissipation mentioned in the related art, since there is no involvement of the rotating mechanical structure in the entire heat dissipation process, no noise is generated and the problem of failure of the rotating mechanical structure is avoided.

[0058] Compared with the passive heat dissipation mentioned in the related art, since the fanning elastic film 20 can actively fan the gas flow during the entire heat dissipation process, the high-temperature gas is discharged more efficiently and the low-temperature gas is sucked in, thereby improving the heat dissipation efficiency. In addition, with the flow of gas, the dust in the accommodating space 120 can also be discharged, thereby achieving a certain dust removal effect.

[0059] In addition, since the thickness of the electromagnetic component 30 and the fan elastic film 20 are very small, it is conducive to the lightweight design of the heat dissipation device, so that the heat dissipation device can be applied to electronic devices with high requirements for lightweight.

[0060] That is to say, the heat dissipation device provided in the embodiment of the present application has the advantages of efficient heat dissipation, high reliability, low noise, and small size, and can effectively solve the technical problems in the related technology.

[0061] In some examples, the main body of the fan elastic film 20 is an elastic film doped with soft magnetic material. For example, the elastic film is a rubber film, and the soft magnetic material is a powdered magnetic material, such as iron, cobalt, nickel, etc.

[0062] In the above implementation, the elastic film provides elastic properties for the fanning elastic film 20, and the soft magnetic material provides magnetic properties for the fanning elastic film, so that the fanning elastic film 20 has both elasticity and magnetism, and can produce elastic deformation under the action of a magnetic field.

[0063] In other examples, the main body of the fan elastic film 20 is an elastic film, and a magnetic film is embedded in the middle thereof. For example, the elastic film is a rubber film, and the magnetic film is a thin film of magnetic material, such as iron, cobalt, nickel, etc. It should be noted that in order to prevent the magnetic film from affecting the elasticity of the elastic film, the size of the magnetic film should be small and located in the middle of the elastic film.

[0064] In the above implementation, the elastic film provides elastic properties for the fanning elastic film 20, and the magnetic film provides magnetic properties for the fanning elastic film, so that the fanning elastic film 20 has both elasticity and magnetism, and can produce elastic deformation under the action of a magnetic field.

[0065] See again Figure 2 In this embodiment, the housing 10 includes a first cover plate 141, a second cover plate 142 and a side panel 143. The side panel 143 has openings on both sides. The first cover plate 141 covers one opening of the side panel 143, and the second cover plate 142 covers the other opening of the side panel 143. The first cover plate 141 and the second cover plate 142 are opposite to each other. The first cover plate 141, the second cover plate 142 and the side panel 143 together enclose the internal space of the housing 10.

[0066] In some examples, the first cover plate 141 and the second cover plate 142 are both detachably connected to the side panel 143. The connection method is screw connection, clamping, etc., which is not limited in the present application.

[0067] In other examples, the first cover plate 141 is detachably connected to the side panel 143, and the second cover plate 142 and the side panel 143 are an integrated structure. With such a design, when assembling the housing 10, only the first cover plate 141 and the side panel 143 need to be assembled, thereby simplifying the assembly of the housing 10.

[0068] In other examples, the second cover plate 142 is detachably connected to the side panel 143, and the first cover plate 141 and the side panel 143 are an integrated structure. With such a design, when assembling the housing 10, only the second cover plate 142 and the side panel 143 need to be assembled, thereby simplifying the assembly of the housing 10.

[0069] Exemplarily, the detachable connection between the first cover plate 141 , the second cover plate 142 and the side panel 143 is achieved by means of screws, snaps, etc., which is not limited in the present application.

[0070] In this embodiment, the shape of the shell 10 is selected according to needs, such as a cylindrical shape, a quadrangular prism shape, etc. The present application does not limit the shape of the shell 10.

[0071] Exemplarily, the vent hole 110 is located on the side panel 143 of the housing 10 , that is, the gas flows from the side of the housing 10 .

[0072] In actual use, other components may be arranged at the first cover plate 141 and the second cover plate 142. If the vent hole 110 is arranged at the first cover plate 141 and the second cover plate 142, the gas flow may be blocked. However, if the vent hole 110 is arranged at the side panel 143, the air flow can flow at the side of the housing 10, and the heat flow generated by the functional component 100 can be taken away more effectively, and the high-temperature gas backflow can be avoided.

[0073] Continue to see Figure 2 In the present embodiment, both sides of the fanning elastic membrane 20 have an activity space 130 , and the activity space 130 on one side of the fanning elastic membrane 20 is the accommodating space 120 .

[0074] In the above implementation, by providing the active space 130 on both sides of the fanning elastic film 20, it is possible to ensure that the fanning elastic film 20 has sufficient fanning space, thereby avoiding interference between the fanning elastic film 20 and other structures during the fanning process. In addition, since the active space 130 on one side of the fanning elastic film 20 is the accommodating space 120, the fanning elastic film 20 can directly fan the gas in the accommodating space 120, thereby effectively improving the heat dissipation efficiency.

[0075] In this embodiment, the fanning elastic membrane 20 is located between the first cover plate 141 and the second cover plate 142, thereby dividing the internal space of the shell 10 into two active spaces 130, one active space 130 is located between the fanning elastic membrane 20 and the first cover plate 141, and the other active space 130 is located between the fanning elastic membrane 20 and the second cover plate 142. The fanning elastic membrane 20 flaps back and forth between the first cover plate 141 and the second cover plate 142, that is, the fanning action in two directions is performed alternately.

[0076] Exemplarily, the size of the activity space 130 is determined by the flapping amplitude of the flapping elastic film 20. The size of the activity space 130 should be greater than the maximum flapping amplitude of the flapping elastic film 20. The flapping amplitude of the flapping elastic film 20 is jointly determined by the elastic elastic film and the electromagnetic component 30, and the factors involved include the elasticity and magnetism of the elastic elastic film, the magnetism of the electromagnetic component 30, etc. By adjusting the above factors, the flapping amplitude of the flapping elastic film 20 can be adjusted.

[0077] In this embodiment, the outer edge of the flapping elastic film 20 is connected to the inner wall of the housing 10 .

[0078] In the above implementation, the housing 10 provides a stable installation base for the fanning elastic membrane 20, so that the fanning elastic membrane 20 can be reliably fanned in the housing 10, and the fanning elastic membrane 20 will not fail due to separation from the installation base. In addition, since the outer edge of the fanning elastic membrane 20 is connected to the inner wall of the housing 10, this connection method can largely avoid affecting the fanning of the middle part of the fanning elastic membrane 20, thereby ensuring the fanning effect of the fanning elastic membrane 20.

[0079] Exemplarily, the outer edge of the fanning elastic membrane 20 is connected to the side panel 143 of the shell 10 .

[0080] Since the side panel 143 of the shell 10 forms a ring-like structure, connecting the fanning elastic membrane 20 to the side panel 143 can ensure the connection area between the fanning elastic membrane 20 and the inner wall of the shell 10, thereby improving the connection strength between the fanning elastic membrane 20 and the shell 10 and preventing the fanning elastic membrane 20 from detaching from the shell 10.

[0081] In some examples, the outer edge of the fanning elastic membrane 20 is adhered to the inner wall of the housing 10 .

[0082] In this connection method, adhesive is used to directly connect the outer edge of the fan elastic membrane 20 to the inner wall of the shell 10, which is simple and has a high connection efficiency.

[0083] In other examples, the outer edge of the fan-shaped elastic membrane 20 is nailed to the inner wall of the housing 10 .

[0084] In this connection mode, nails are used to nail the outer edge of the flapping elastic membrane 20 to the inner wall of the shell 10, thereby ensuring the stability of the connection between the flapping elastic membrane 20 and the shell 10.

[0085] In order to further improve the connection stability between the fanning elastic membrane 20 and the shell 10, illustratively, the inner wall of the side panel 143 has an inner flange 144, and the inner flange 144 extends along the circumference of the side panel 143. The outer edge of the fanning elastic membrane 20 is in contact with one side of the inner flange 144, and the outer edge of the fanning elastic membrane 20 is connected to the inner flange 144.

[0086] In the above implementation, by providing the inner flange 144 , the contact area between the flapping elastic membrane 20 and the side panel 143 can be effectively increased, thereby improving the connection strength between the flapping elastic membrane 20 and the housing 10 .

[0087] Exemplarily, the inner flange 144 is parallel to the first cover plate 141 and the second cover plate 142. With such a design, the fanning elastic membrane 20 is connected behind the inner flange 144, so that the fanning elastic membrane 20 can also be parallel to the first cover plate 141 and the second cover plate 142 in the original state, thereby avoiding interference between the inclined fanning elastic membrane 20 and the first cover plate 141 and the second cover plate 142, which is beneficial to increase the size of the activity space 130 and ensure the reliability of the fanning elastic membrane 20 when fanning.

[0088] Continue to see Figure 2 In the present embodiment, the electromagnetic assembly 30 is located outside the accommodating space 120 and is spaced apart from the fanning elastic membrane 20 .

[0089] In the above implementation, the electromagnetic assembly 30 is spaced from the fanning elastic membrane 20. Such arrangement of the electromagnetic assembly 30 can ensure that the magnetic field generated by the electromagnetic assembly 30 can act on the fanning elastic membrane 20, and can prevent the electromagnetic assembly 30 from interfering with the fanning of the fanning elastic membrane 20. In addition, the electromagnetic assembly 30 is located outside the accommodation space 120, which will neither block the flow of gas nor occupy the accommodation space 120, so that more functional parts 100 can be accommodated in the accommodation space 120.

[0090] In this embodiment, the electromagnetic assembly 30 includes a plurality of electromagnetic members 310 .

[0091] By providing a plurality of electromagnetic components 310 , it is possible to ensure that the electromagnetic assembly 30 generates a sufficiently strong magnetic field to drive the fanning elastic film 20 to fan with a sufficient amplitude, thereby ensuring the heat dissipation effect of the heat dissipation device.

[0092] For example, the number of electromagnetic components 310 can be adjusted according to actual needs. The more electromagnetic components 310 there are, the stronger the magnetic field generated by the electromagnetic assembly 30 is, and the fewer electromagnetic components 310 there are, the lower the cost of the electromagnetic assembly 30 is. The number of electromagnetic components 310 is 2, 3, 4, etc., and this application does not limit this.

[0093] Figure 5 FIG. 1 is a top view of the heat dissipation device, in order to show the arrangement of the electromagnetic member 310. Figure 5 The electromagnetic element 310 is shown by the dotted line in FIG. Figure 5 , illustratively, a plurality of electromagnetic members 310 are arranged at intervals on a plane parallel to the fanning elastic membrane 20 .

[0094] Such arrangement of the electromagnetic components 310 can ensure that the electromagnetic components 310 do not affect each other, which is conducive to generating a uniform magnetic field.

[0095] In some examples, the plurality of electromagnetic members 310 are evenly spaced and arranged on a plane parallel to the fanning elastic film 20 .

[0096] Such arrangement of the electromagnetic component 310 can make the magnetic field generated by the electromagnetic component 30 more uniform, so as to apply a force generated by the uniform magnetic field to the fanning elastic film 20 .

[0097] For example, the electromagnetic member 310 can be Figure 5 The side-by-side evenly spaced arrangement shown in the figure can also be arranged in other shapes, such as a circle. The shape presented by the evenly arranged electromagnetic parts 310 can match the shape of the fanning elastic film 20 in the original state. For example, if the fanning elastic film 20 is a circle in the original state, then the shape presented by the evenly arranged electromagnetic parts 310 is also a circle accordingly, and this application does not limit this.

[0098] In other examples, the plurality of electromagnetic members 310 are arranged in an array on a plane parallel to the fanning elastic membrane 20 .

[0099] Arranging the electromagnetic components 310 in this way can not only ensure that the electromagnetic components 310 do not affect each other, but also can concentrate the electromagnetic components 310 at the required position according to needs, so as to apply the force generated by the magnetic field to the fanning elastic film 20 in a more targeted manner.

[0100] For example, the outer edge of the fanning elastic film 20 needs to be connected to the housing 10, so its fanning amplitude will be limited, while the central part of the fanning elastic film 20 will not be limited, and the fanning efficiency is higher. Based on this, the electromagnetic components 310 are arranged in an array at the position corresponding to the central part of the fanning elastic film 20, so that the force generated by the magnetic field can be applied to the central part of the fanning elastic film 20 in a targeted manner, so as to better drive the central part of the fanning elastic film 20 to fan.

[0101] In this embodiment, the electromagnetic member 310 is a conductive coil.

[0102] In the above implementation, when a current in one direction is connected to the conductive coil, the conductive coil generates a magnetic field with magnetic flux lines in one direction. Under the action of the magnetic field, a suction force in one direction is generated on the fanning elastic film 20, so that the fanning elastic film 20 generates elastic deformation in a corresponding direction to discharge the gas in the accommodating space 120 to the external space. When a current in another direction is connected to the conductive coil, the conductive coil generates a magnetic field with magnetic flux lines in another opposite direction. Under the action of the magnetic field, a suction force in another opposite direction is generated on the fanning elastic film 20, so that the fanning elastic film 20 generates elastic deformation in a corresponding direction to suck the gas in the external space into the accommodating space 120. By regularly changing the direction of the current connected to the conductive coil, the fanning elastic film 20 can be controlled to generate regular fanning (reciprocating fanning), so that the gas in the accommodating space 120 flows, and then the functional part 100 in the accommodating space 120 is dissipated.

[0103] Figure 6The schematic diagram of the electromagnetic component is shown in Figure 2. Figure 6 Exemplarily, the electromagnetic member 310 includes a positive lead 311, a negative lead 312, and a plurality of coils 313. The positive lead 311 and the negative lead 312 are spaced apart from each other, one end of the plurality of coils 313 is respectively connected to the positive lead 311, the other end of the plurality of coils 313 is respectively connected to the negative lead 312, and the plurality of coils 313 are spaced apart from each other.

[0104] It is worth mentioning that Figure 6 The wavy lines indicated at the positive electrode wire 311 and the negative electrode wire 312 are used to indicate that part of the positive electrode wire 311 and the negative electrode wire 312 are omitted, and they do not belong to the structure of the electromagnetic component.

[0105] When the heat dissipation device is working, currents in different directions can be connected to the conductive coil.

[0106] When a current in one direction is connected to the conductive coil, the current flows from the positive wire 311 through the coil 313 to the negative wire 312. At this time, the electromagnetic component 310 generates a magnetic field with magnetic flux lines pointing upward (toward the first cover plate 141), which generates a repulsive force on the fanning elastic membrane 20, forcing the fanning elastic membrane 20 to elastically deform downward (toward the second cover plate 142), thereby squeezing the space in the accommodating space 120, discharging the high-temperature gas in the accommodating space 120, and blowing out the dust at the same time.

[0107] When the conductive coil is connected to a current in another direction, the current flows from the negative wire 312 through the coil 313 to the positive wire 311. At this time, the electromagnetic component 310 generates a magnetic field with magnetic flux lines pointing downward (toward the second cover plate 142), which generates an attractive force on the fanning elastic membrane 20, forcing the fanning elastic membrane 20 to generate elastic deformation upward (toward the first cover plate 141), thereby increasing the volume of the accommodating space 120 and sucking the low-temperature gas in the external space into the accommodating space 120.

[0108] Such a method of periodically alternating the current causes high-temperature gas to be continuously discharged and low-temperature gas to be continuously inhaled, thereby achieving heat dissipation for the functional component 100 .

[0109] In some examples, the coil 313 is an annular structure, and in other examples, the coil 313 can also be other shapes, such as a triangle, a square, an irregular shape, etc. The shape of the coil 313 can be any shape as long as it can generate a magnetic field that drives the elastic film 20 to flap, and the present application does not limit the shape of the coil 313.

[0110] Exemplarily, the electromagnetic component 310 is made of copper, so that the electromagnetic component 310 has strong conductivity. Of course, the electromagnetic component 310 can also be made of other conductive materials, and the present application does not limit this.

[0111] In this embodiment, there are two ways of connecting the electromagnetic component 310 and the housing 10, which are respectively described below.

[0112] See again Figure 2 , Figure 2 The first connection mode between the electromagnetic member 310 and the housing 10 is shown in FIG. 1 . In this connection mode, a plurality of electromagnetic members 310 are connected to the housing wall of the housing 10 .

[0113] With such a design, the housing 10 provides a stable installation base for the multiple electromagnetic components 310, so that the multiple electromagnetic components 310 can be stably installed on the housing 10. Through this connection method, the electromagnetic components 310 are directly connected to the housing 10 without adding other structures, which can effectively simplify the structure of the heat dissipation device and facilitate the realization of a lightweight design of the heat dissipation device.

[0114] Exemplarily, each electromagnetic component 310 is connected to the first cover plate 141 of the housing 10, or each electromagnetic component 310 is connected to the second cover plate 142 of the housing 10, or a part of the electromagnetic components 310 is connected to the first cover plate 141 of the housing 10, and another part of the electromagnetic components 310 is connected to the second cover plate 142. The connection method of the electromagnetic component 310 on the housing 10 can be selected according to actual needs, and this application does not limit this.

[0115] In some examples, the electromagnetic member 310 is connected to the inner wall of the housing 10 .

[0116] In this connection mode, the electromagnetic component 310 is directly connected to the surface of the housing 10, which is simple and convenient, and has a high connection efficiency. In addition, since the electromagnetic component 310 is located on the surface of the housing 10, it can be closer to the fanning elastic film 20, which is conducive to the magnetic field generated by the electromagnetic component 310 acting on the fanning elastic film 20.

[0117] Exemplarily, the electromagnetic component 310 is connected to the surface of the housing 10 by bonding. In this design, the electromagnetic component 310 is bonded to the surface of the housing 10 by glue, thereby achieving a stable connection between the electromagnetic component 310 and the housing 10.

[0118] Alternatively, the electromagnetic component 310 is attached to the surface of the housing 10 by coating, that is, a layer of film is covered on the outside of the electromagnetic component 310, and the film is bonded to the housing 10, so as to achieve a stable connection between the electromagnetic component 310 and the housing 10.

[0119] Through the above two methods, the connection between the electromagnetic component 310 and the surface of the housing 10 can be achieved.

[0120] In other examples, the electromagnetic component 310 is embedded in the shell wall of the shell 10 .

[0121] In this connection mode, the electromagnetic component 310 is located inside the shell wall of the shell 10, so that the electromagnetic component 310 is fully protected. In addition, since the electromagnetic component 310 is located inside the shell wall of the shell 10, the space inside the shell wall of the shell 10 can be further utilized, which is conducive to the lightweight design of the heat dissipation device.

[0122] Exemplarily, the inner wall of the housing 10 has a mounting groove 145, and the electromagnetic component 310 is embedded in the mounting groove 145. The size of the mounting groove 145 is slightly smaller than the size of the electromagnetic component 310, so that the electromagnetic component 310 can be stably embedded in the mounting groove 145. In other words, the electromagnetic component 310 is clamped in the mounting groove 145 using the principle of interference fit.

[0123] In order to improve the installation stability of the electromagnetic component 310 in the installation groove 145, the inner wall of the installation groove 145 is provided with a buckle 146, and the electromagnetic component 310 is fixed in the installation groove 145 by the buckle 146. In the above implementation, the buckle 146 is set at the notch of the installation groove 145, and the electromagnetic component 310 is blocked in the installation groove 145 by the buckle 146.

[0124] For example, during the injection molding process of the housing 10, the electromagnetic component 310 is arranged in the mold. After the injection molding is completed, the electromagnetic component 310 is accommodated in the housing 10 and becomes one with the housing 10. With such a design, the assembly between the electromagnetic component 310 and the housing 10 is completed when the housing 10 is produced, and there is no need to assemble it in subsequent processes, which effectively improves the assembly efficiency of the heat dissipation device.

[0125] Figure 7 is a cross-sectional view of the heat dissipation device. Figure 7 and Figure 2 The difference lies in the different connection methods between the electromagnetic member 310 and the housing 10. Figure 7 , Figure 7 The second connection mode between the electromagnetic component 310 and the shell 10 is shown in the figure. In this connection mode, the electromagnetic assembly 30 also includes a supporting member 320, multiple electromagnetic components 310 are connected to the supporting member 320, and the supporting member 320 is connected to the inner wall of the shell 10.

[0126] In the above implementation, the carrier 320 is used to provide an installation base for the electromagnetic component 310. Multiple electromagnetic components 310 are connected to the carrier 320, and the carrier 320 is connected to the inner wall of the housing 10. In this design, the electromagnetic component 310 is not directly connected to the housing 10, but is indirectly connected to the housing 10 through the carrier 320. Since the electromagnetic component 310 is independent of the housing 10, on the one hand, the design of the housing 10 is simpler, and on the other hand, the installation of the electromagnetic component 310 in the housing 10 is more flexible and can adapt to different design requirements.

[0127] For example, the connection method between the electromagnetic component 310 and the carrier 320 can refer to the connection method between the electromagnetic component 310 and the housing 10 mentioned above. For example, one side of the carrier 320 has a groove similar to the mounting groove 145, and the electromagnetic component 310 is installed in the groove. The size of the groove is slightly smaller than the size of the electromagnetic component 310, so that the electromagnetic component 310 can be stably installed in the groove.

[0128] Of course, in order to improve the installation stability of the electromagnetic component 310 in the groove, the inner wall of the groove can also be provided with a clip similar to the buckle 146, through which the electromagnetic component 310 is clamped and fixed in the groove to prevent the electromagnetic component 310 from falling out of the groove. Alternatively, the electromagnetic component 310 is accommodated in the carrier 320 by injection molding.

[0129] Exemplarily, the bearing member 320 is a plate-shaped structural member, and the bearing member 320 is parallel to the first cover plate 141 and the second cover plate 142. Such a design enables the bearing member 320 to be opposite to the fanning elastic film 20, so as to better drive the fanning elastic film 20 to fan through the magnetic field generated by the electromagnetic member 310.

[0130] In order to provide a larger activity space 130 for the flapping elastic film 20, the bearing member 320 is illustratively close to the first cover plate 141 or the second cover plate 142. Such a design makes the size of the activity space 130 as large as possible, avoiding interference between the bearing member 320 and the flapping elastic film 20.

[0131] In some examples, an outer edge of the carrier 320 is connected to the side panel 143 of the housing 10 .

[0132] Since the side panels 143 of the housing 10 are formed into a ring-like structure, the bearing member 320 is connected to the side panels 143, so that the connection area between the bearing member 320 and the inner wall of the housing 10 can be ensured, thereby improving the connection strength between the bearing member 320 and the housing 10 and preventing the bearing member 320 from falling off the housing 10. In addition, since the side panels 143 have a certain axial space, the position of the bearing member 320 can be adjusted more flexibly, making the installation of the bearing member 320 more flexible.

[0133] In other examples, one side of the carrier 320 is connected to the first cover plate 141 or the second cover plate 142 of the housing 10 .

[0134] In the above implementation, the carrier 320 and the first cover plate 141 or the second cover plate 142 are connected face to face, so that the connection stability of the carrier 320 on the housing 10 can be ensured. In addition, the carrier 320 is connected in this way, so that the carrier 320 is closely attached to the first cover plate 141 or the second cover plate 142, so that the size of the activity space 130 is as large as possible, and the interference between the carrier 320 and the flapping elastic film 20 is avoided.

[0135] In this embodiment, whether the electromagnetic component 310 is directly connected to the housing 10 or the electromagnetic component 310 is connected to the housing 10 through the carrier 320, the position of the electromagnetic assembly 30 can be adjusted according to actual needs. In other words, the electromagnetic assembly 30 can be arranged close to the first cover plate 141 or close to the second cover plate 142. When the electromagnetic assembly 30 is arranged close to the first cover plate 141, the electromagnetic assembly 30 is located on one side of the fanning elastic film 20, and when the electromagnetic assembly 30 is arranged close to the second cover plate 142, the electromagnetic assembly 30 is located on the other side of the fanning elastic film 20. Both of the above two arrangements can realize the fanning of the fanning elastic film 20.

[0136] The following takes the case where the electromagnetic member 310 is directly connected to the housing 10 as an example. Figure 2 As shown, the electromagnetic assembly 30 is arranged close to the first cover plate 141. Figure 8 As shown, the electromagnetic assembly 30 is arranged close to the second cover plate 142 .

[0137] In this embodiment, the shell wall of the shell 10 has a plurality of vent holes 110 , and the plurality of vent holes 110 are arranged at intervals along the circumferential direction of the outer edge of the fanning elastic membrane 20 .

[0138] In the above implementation, a plurality of vent holes 110 are provided, which can increase the number of gas circulation channels, and is beneficial for gas to flow between the accommodating space 120 and the external space, thereby improving the heat dissipation performance of the heat dissipation device.

[0139] Exemplarily, the number of the plurality of vent holes 110 can be selected according to actual needs, such as 2, 3, 4, 5, etc., and the present application does not impose any limitation on this.

[0140] Fig. 9 is a cross-sectional view of the heat dissipation device. Fig. 9 and Figure 2 The difference is that the connection position of the electromagnetic component 30 is different, combined with Fig. 9 In this embodiment, the housing 10 is magnetic, and the fanning elastic membrane 20 is connected to the electromagnetic component 30.

[0141] Fig. 9 The working principle and beneficial effects of the heat dissipation device shown are similar to Figure 2-8The heat sinks shown are essentially the same, differing only in that Fig. 9 The heat dissipation device shown is that the electromagnetic component 30 generates a magnetic field, and the magnetic field generates a mutually repulsive or attractive magnetic force with the magnetic housing 10, thereby driving the flapping elastic film 20 to flap relative to the housing 10. Other beneficial effects are not described in detail.

[0142] Exemplarily, the fanning elastic film 20 is connected to the electromagnetic assembly 30 by any one of bonding, mounting, and lamination, and the present application does not impose any limitation on this.

[0143] Exemplarily, the shell 10 has magnetism in a manner similar to the aforementioned manner in which the fanning elastic membrane 20 has magnetism, which will not be described in detail here.

[0144] Fig.10 A cross-sectional view of an electronic device provided in an embodiment of the present application, combined with Fig.10 In this embodiment, the electronic device includes a functional part 100 and Figure 1-Figure 9 Heat sink shown.

[0145] In this embodiment, the functional component 100 is located in the accommodating space 120 and can be cooled by the flow of gas. In addition, the functional component 100 and the flapping elastic film 20 are spaced apart from each other so that the functional component 100 will not interfere with the flapping of the flapping elastic film 20 .

[0146] The functional component 100 is accommodated in the accommodation space 120, so that the heat generated by the functional component 100 during operation is dissipated into the accommodation space 120. After the electromagnetic component 30 is energized, different magnetic fields will be generated according to the different directions of the current, so that the fanning elastic membrane 20 and the shell 10 attract or repel each other, so that the fanning elastic membrane 20 produces elastic deformation in different directions, and the fanning elastic membrane 20 starts to fan. In one deformation direction, the fanning elastic membrane 20 can discharge the high-temperature gas in the accommodation space 120 to the external space, and in another deformation direction, the fanning elastic membrane 20 can inhale the low-temperature gas in the external space into the accommodation space 120. Through the coordination of exhaust and intake, the high-temperature gas in the accommodation space 120 and the low-temperature gas in the external space can be exchanged, so as to achieve the purpose of heat dissipation of the functional component 100 in the accommodation space 120.

[0147] Compared with the active heat dissipation mentioned in the related art, since there is no involvement of the rotating mechanical structure in the entire heat dissipation process, no noise is generated and the problem of failure of the rotating mechanical structure is avoided. Compared with the passive heat dissipation mentioned in the related art, since the gas flow is actively fanned during the entire heat dissipation process, high-temperature gas can be discharged more efficiently and low-temperature gas can be inhaled, thereby improving the heat dissipation efficiency. In addition, with the flow of gas, dust in the accommodating space 120 can also be discharged, thereby achieving a certain dust removal effect.

[0148] In addition, since the thickness of the electromagnetic component 30 and the fan elastic film 20 are very small, it is conducive to the lightweight design of the heat dissipation device, so that the heat dissipation device can be applied to electronic devices with high requirements for lightweight.

[0149] Exemplarily, the electronic device is a terminal device directly facing customers, such as a network router, a tablet computer, etc., and the present application does not limit the type of the electronic device. Of course, the electronic device can also be a device not directly facing customers.

[0150] When the flapping elastic film 20 is magnetic, there are two arrangements of the functional component 100 relative to the electromagnetic assembly 30 , which are described below respectively.

[0151] See also Fig.10 In the first arrangement, the electromagnetic assembly 30 is located on the side of the fanning elastic membrane 20 facing away from the functional part 100 .

[0152] In this arrangement, the electromagnetic component 30 is far away from the functional part 100 and close to the fanning elastic membrane 20. The electromagnetic component 30 can better drive the fanning elastic membrane 20 to fan through the magnetic field generated by itself.

[0153] See also Fig.11 In the second arrangement, the electromagnetic assembly 30 is located on the side of the functional component 100 facing away from the flapping elastic membrane 20 .

[0154] In this arrangement, the electromagnetic assembly 30 is close to the functional part 100 and away from the flapping elastic membrane 20, which is beneficial to ensure the size of the activity space 130 and avoid interference between the flapping elastic membrane 20 and the electromagnetic assembly 30 when flapping.

[0155] Here is a brief introduction to how electronic devices are assembled and work.

[0156] Taking the second cover plate 142 and the side panel 143 as an integrated structure as an example, the functional component 100 is placed on the second cover plate 142, and the functional component 100 is connected to the second cover plate 142 to ensure a stable connection between the functional component 100 and the second cover plate 142. The fanning elastic membrane 20 is connected to the inner flange 144 to ensure a stable connection between the fanning elastic membrane 20 and the side panel 143. It should be noted that the fanning elastic membrane 20 should maintain a certain distance from the functional component 100 to ensure that the activity space 130 (accommodation space 120) on one side of the fanning elastic membrane 20 is sufficient. If the electromagnetic component 310 is set on the bearing component 320, the bearing component 320 is connected to the side panel 143. It should be noted that the bearing component 320 should maintain a certain distance from the fanning elastic membrane 20 to ensure that the activity space 130 on the other side of the fanning elastic membrane 20 is sufficient. After the carrier 320 is assembled, the first cover plate 141 is placed on the side panel 143 to complete the assembly. If the electromagnetic member 310 is disposed on the first cover plate 141 , the first cover plate 141 is placed on the side panel 143 to complete the assembly without installing the carrier 320 .

[0157] When the electronic device is working, the functional part 100 generates heat, and the heat generated by the functional part 100 during operation is dissipated in the accommodating space 120. At the same time, the electromagnetic part 310 is periodically connected with currents in different directions, which can drive the flapping elastic film 20 to flap.

[0158] When a current in one direction is connected to the conductive coil, the current flows from the positive wire 311 through the coil 313 to the negative wire 312. At this time, the magnetic field generated by the electromagnetic component 310 generates a repulsive force on the fanning elastic film 20, forcing the fanning elastic film 20 to elastically deform downward (toward the second cover plate 142), thereby squeezing the space in the accommodating space 120, discharging the high-temperature gas in the accommodating space 120, and blowing out the dust. When a current in another direction is connected to the conductive coil, the current flows from the negative wire 312 through the coil 313 to the positive wire 311. At this time, the magnetic field generated by the electromagnetic component 310 generates an attractive force on the fanning elastic film 20, forcing the fanning elastic film 20 to elastically deform upward (toward the first cover plate 141), thereby increasing the volume of the accommodating space 120 and sucking the low-temperature gas in the external space into the accommodating space 120. By flapping the elastic membrane 20 back and forth periodically, exhaust and intake cooperate with each other, and heat exchange is performed between the high-temperature gas in the accommodating space 120 and the low-temperature gas in the external space, thereby achieving the purpose of heat dissipation of the functional parts 100 in the accommodating space 120.

[0159] Since there is no involvement of the rotating mechanical structure in the entire heat dissipation process, no noise is generated and the problem of failure of the rotating mechanical structure is avoided. In addition, the fanning elastic membrane 20 can actively fan the gas flow, so the high-temperature gas is discharged more efficiently and the low-temperature gas is inhaled, thereby improving the heat dissipation efficiency. During the gas flow process, the dust in the accommodating space 120 can also be discharged, thereby achieving a certain dust removal effect. In addition, since the thickness dimensions of the electromagnetic component 30 and the fanning elastic membrane 20 are very small, it can be conducive to the lightweight design of the heat dissipation device, so that the heat dissipation device can be used in electronic devices with high requirements for lightweightness.

[0160] That is to say, the electronic device provided in the embodiment of the present application has the advantages of efficient heat dissipation, high reliability, low noise and small size because it is equipped with a heat dissipation device, and can effectively solve the technical problems in the related technology.

[0161] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar words used in the patent application specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0162] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A heat dissipation device, characterized in that: It comprises a housing (10), a fanning elastic membrane (20) and an electromagnetic assembly (30); The shell wall of the shell (10) has a vent hole (110); The fanning elastic membrane (20) is located inside the shell (10) to separate a containing space (120) inside the shell (10), and the containing space (120) is communicated with the vent hole (110); One of the shell (10) and the fanning elastic membrane (20) is magnetic, and the other of the shell (10) and the fanning elastic membrane (20) is connected to the electromagnetic component (30).

2. The heat dissipation device according to claim 1, characterized in that: Both sides of the fanning elastic membrane (20) are provided with activity spaces (130), and the activity space (130) located on one side of the fanning elastic membrane (20) is the accommodating space (120).

3. The heat dissipation device according to claim 1 or 2, characterized in that: The outer edge of the fanning elastic membrane (20) is connected to the inner wall of the shell (10).

4. The heat dissipation device according to claim 3, characterized in that: The outer edge of the fanning elastic film (20) is adhered to the inner wall of the shell (10); Alternatively, the outer edge of the fanning elastic membrane (20) is nailed to the inner wall of the shell (10).

5. The heat dissipation device according to any one of claims 1 to 4, characterized in that: The fanning elastic film (20) has magnetic properties; The electromagnetic component (30) is connected to the housing (10) and is located on one side of the fanning elastic membrane (20).

6. The heat dissipation device according to claim 5, characterized in that: The electromagnetic component (30) is located outside the accommodating space (120) and is spaced apart from the fanning elastic membrane (20).

7. The heat dissipation device according to claim 5 or 6, characterized in that: The electromagnetic assembly (30) includes a plurality of electromagnetic members (310); The plurality of electromagnetic components (310) are arranged at intervals on a plane parallel to the fanning elastic membrane (20).

8. The heat dissipation device according to claim 7, characterized in that: The plurality of electromagnetic components (310) are connected to the shell wall of the shell (10).

9. The heat dissipation device according to claim 8, characterized in that: The electromagnetic member (310) is connected to the inner wall of the housing (10); or, The electromagnetic component (310) is embedded in the shell wall of the shell (10).

10. The heat dissipation device according to claim 7, characterized in that: The electromagnetic assembly (30) further includes a bearing member (320); The plurality of electromagnetic components (310) are connected to the supporting component (320), and the supporting component (320) is connected to the inner wall of the housing (10).

11. The heat dissipation device according to any one of claims 7 to 10, characterized in that: The electromagnetic component (310) is a conductive coil.

12. The heat dissipation device according to any one of claims 1 to 11, characterized in that: The shell wall of the shell (10) has a plurality of vent holes (110); The plurality of ventilation holes (110) are arranged at intervals along the circumferential direction of the outer edge of the fanning elastic membrane (20).

13. An electronic device, characterized in that: Comprising a functional part (100) and the heat dissipation device according to any one of claims 1 to 12; The functional component (100) is located in the accommodating space (120) and is spaced apart from the fanning elastic membrane (20).

14. The electronic device according to claim 13, characterized in that: The fanned elastic film (20) has magnetic properties; The electromagnetic component (30) is located on a side of the fanning elastic membrane (20) facing away from the functional component (100); Alternatively, the electromagnetic component (30) is located on a side of the functional component (100) that is away from the fanning elastic membrane (20).

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