Novel heat dissipation device of switching power supply

Abstract

The utility model relates to the technical field of switching power supplies, in particular to a novel radiating device of a switching power supply, which comprises a shell, a radiating fan is mounted in the shell, air ducts are arranged on two sides of the shell, and the top ends of the air ducts are communicated to a top plate of the shell. According to the utility model, the first heat dissipation dustproof net and the second heat dissipation dustproof net are both arranged on the cover plate of the top plate of the shell, so that when the whole shell is fixedly installed on the electrical equipment, the first heat dissipation dustproof net and the second heat dissipation dustproof net are both located on one side of the top surface of the shell and are not easy to block; a user can conveniently sweep dust attached to the first heat dissipation dustproof net and the second heat dissipation dustproof net, and meanwhile when the dust attached to the first heat dissipation dustproof net and the second heat dissipation dustproof net is too much and difficult to sweep away, the cover plate can be fixed through the lock catch assembly; and therefore, the first heat dissipation dustproof net and the second heat dissipation dustproof net can be conveniently washed, and the influence on the heat dissipation effect is avoided.

Description

Technical Field

[0001] This utility model relates to the field of switching power supply technology, and more specifically, to a novel heat dissipation device for switching power supplies. Background Technology

[0002] A switching power supply is a high-frequency power conversion device, a type of power supply. Its function is to convert a voltage at a certain level into the voltage or current required by the user through different architectures. When the switching power supply is running, the circuit board installed in it will generate a certain amount of heat, so certain heat dissipation measures need to be taken for it.

[0003] Chinese patent CN21996284U discloses a fast-heat dissipation switching power supply. By setting up a heat dissipation component, the heat dissipation effect of this utility model can be effectively improved. At the same time, the set second dustproof net can effectively prevent dust. This switching power supply dissipates heat by generating airflow circulation in the housing through a cooling fan. In order to ensure airflow circulation inside the housing, external airflow needs to enter the interior through ventilation slots on the side wall of the housing and exit through heat dissipation slots on the top surface of the housing. Therefore, the first and second dustproof nets used for dust prevention cannot be set on the top surface of the housing at the same time. When the power switch is fixedly installed in the electrical equipment, the dustproof nets located on the side wall of the housing are easily blocked by other parts of the electrical equipment. When the dust attached to the dustproof net affects heat dissipation, it is inconvenient for the user to clean the dust attached to the dustproof net on the side wall of the housing. In addition, when there is a lot of dust attached to the dustproof net, it is difficult for the user to remove the dustproof net for washing, thus the dust affects the heat dissipation effect. Utility Model Content

[0004] This invention provides a novel heat dissipation device for switching power supplies, which solves the technical problem in the prior art where users find it inconvenient to clean or wash the dust on the dust filter, thus affecting the heat dissipation effect.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A novel heat dissipation device for a switching power supply includes a housing, an internal cooling fan, and air ducts on both sides of the housing. The top end of each air duct connects to the top plate of the housing, and the bottom end of each air duct connects to both sides of the bottom of the inner cavity of the housing. The heat dissipation device also includes a set of cover plates. A first heat dissipation and dustproof mesh is provided in the middle of each cover plate, and a second heat dissipation and dustproof mesh is provided on both sides of each cover plate. A slot for accommodating the cover plates is provided on the top plate of the housing, and protrusions are provided on both sides of the inner wall of the slot.

[0007] A locking assembly for securing the cover plate is provided between the top plate of the housing and the cover plate.

[0008] Furthermore, the locking assembly includes threaded grooves on both sides of the cover plate, perforated plates on the top plate of the housing near both sides of the slot, and fastening screws that can pass through the perforated plates and be threadedly engaged with the threaded grooves.

[0009] Furthermore, the inner wall of the air duct has a rounded corner structure.

[0010] Furthermore, the cover plate is provided with handles, and the handles are arranged in two groups on both sides of the cover plate respectively.

[0011] Furthermore, the first heat dissipation and dustproof mesh is positioned higher than the second heat dissipation and dustproof mesh, and the first heat dissipation and dustproof mesh is an outwardly convex arc-shaped structure.

[0012] Furthermore, mounting holes are provided at the four corners of the housing, and a flexible pad is provided on the surface of the bottom plate of the housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: Since both the first and second heat dissipation dustproof nets are set on the cover plate of the top plate of the housing, when the housing is fixedly installed on the electrical equipment, both the first and second heat dissipation dustproof nets are located on one side of the top surface of the housing and are not easily blocked. Users can easily clean the dust attached to the first and second heat dissipation dustproof nets. At the same time, when there is a lot of dust attached to the first and second heat dissipation dustproof nets and it is difficult to clean, the locking assembly can also engage the fixing effect on the cover plate, so that the first and second heat dissipation dustproof nets can be easily washed with water, avoiding affecting the heat dissipation effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the bottom structure of the shell in this utility model;

[0018] Figure 4 This is a schematic diagram of the slot and protrusion in this utility model;

[0019] Figure 5 This is a cross-sectional view of the airway in this utility model.

[0020] In the diagram: 1. Housing; 2. Cooling fan; 3. Air duct; 4. Cover plate; 5. First heat dissipation and dustproof mesh; 6. Second heat dissipation and dustproof mesh; 7. Slot; 8. Protrusion; 9. Threaded groove; 10. Perforated plate; 11. Fastening screw; 12. Handle; 13. Mounting hole; 14. Flexible pad. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-5 A novel heat dissipation device for a switching power supply includes a housing 1, a cooling fan 2 installed inside the housing 1, air ducts 3 on both sides of the housing 1, the top end of the air ducts 3 connecting to the top plate of the housing 1, and the bottom end of the air ducts 3 connecting to the bottom sides of the inner cavity of the housing 1. The heat dissipation device also includes a set of cover plates 4, a first heat dissipation and dustproof mesh 5 provided in the middle of the cover plates 4, and a second heat dissipation and dustproof mesh 6 provided on both sides of the cover plates 4. A slot 7 for accommodating the cover plates 4 is provided on the top plate of the housing 1, and protrusions 8 are provided on both sides of the inner wall of the slot 7.

[0024] A locking assembly for fixing the cover plate 4 is provided between the top plate of the housing 1 and the cover plate 4.

[0025] In use, align the cover plate 4 with and insert it into the slot 7 on the top plate of the housing 1. The bottom edge of the cover plate 4 will contact the protrusion 8 inside the slot 7. With the support of the protrusion 8, the cover plate 4 fits perfectly into the slot 7. The cover plate 4 can be fixed by the locking assembly. At this time, while the cover plate 4 covers the slot 7, the first heat dissipation dustproof mesh 5 is located above the cooling fan 2. At the same time, the second heat dissipation dustproof mesh 6 on both sides will cover the top of the air duct 3. After the cooling fan 2 is turned on, the external airflow passes through the second heat dissipation dustproof mesh 6 and is drawn in from the top of the air duct 3. Then, it enters the bottom sides of the inner cavity of the housing 1 from the bottom of the air duct 3, forming convection at the bottom of the inner cavity of the housing 1. Finally, it is blown out from the first heat dissipation dustproof mesh 5 by the action of the cooling fan 2. In this process, the airflow can effectively dissipate the heat of the motherboard inside the housing 1 and fix the electrical equipment. During use, the first heat dissipation dustproof mesh 5 and the second heat dissipation dustproof mesh 6 are located on the cover plate 4 of the top plate of the housing 1 and are not easily blocked. Therefore, the user can more easily clean the dust attached to the first heat dissipation dustproof mesh 5 and the second heat dissipation dustproof mesh 6, avoiding dust clogging the first heat dissipation dustproof mesh 5 and the second heat dissipation dustproof mesh 6 and affecting heat dissipation. In addition, when there is a lot of dust attached to the first heat dissipation dustproof mesh 5 and the second heat dissipation dustproof mesh 6 and it is difficult to clean, the locking assembly can also release the fixing effect on the cover plate 4. At this time, the user can easily pull the cover plate 4 out of the slot 7 at the top of the housing 1, so as to easily wash the first heat dissipation dustproof mesh 5 and the second heat dissipation dustproof mesh 6 with water, avoiding dust clogging the first heat dissipation dustproof mesh 5 and the second heat dissipation dustproof mesh 6 and affecting the heat dissipation inside the housing 1.

[0026] For further details, please refer to Figure 1 and Figure 2 The locking assembly includes threaded grooves 9 on both sides of the cover plate 4, perforated plates 10 on both sides of the top plate of the housing 1 near the slot 7, and fastening screws 11 that can pass through the perforated plates 10 and be threaded into the threaded grooves 9.

[0027] One end of the fastening screw 11 is provided with a head for manual rotation. When the cover plate 4 is fitted into the slot 7, the threaded grooves 9 on both sides of the cover plate 4 will be aligned with the hole plate 10 on the top plate of the housing 1. At this time, the user can pass the fastening screw 11 through the hole plate 10 and screw it into the threaded groove 9. Under the restraint of the fastening screw 11, the cover plate 4 can be fixed in the slot 7 and will not fall off. The user only needs to unscrew the fastening screw 11 from the inside of the threaded groove 9 to release the fixation of the cover plate 4. At this time, the cover plate 4 can be pulled out from the inside of the slot 7.

[0028] For further details, please refer to Figure 5 The inner wall of air duct 3 has a rounded corner structure.

[0029] Since the airflow needs to be turned when it is drawn in from the top of the air duct 3 and enters the inner cavity of the housing 1 from the bottom of the air duct 3, the rounded corner structure of the inner wall of the air duct 3 reduces the resistance encountered by the airflow when it turns, ensuring smooth airflow and reducing the noise generated.

[0030] For further details, please refer to Figure 2 The cover plate 4 is provided with handles 12, which are arranged in two groups on both sides of the cover plate 4.

[0031] When the cover plate 4 is inserted into or removed from the slot 7, the handle 12 makes it easy for people to grip.

[0032] For further details, please refer to Figure 1 and Figure 2 The first heat dissipation and dustproof mesh 5 is positioned higher than the second heat dissipation and dustproof mesh 6, and the first heat dissipation and dustproof mesh 5 is an outwardly convex arc-shaped structure.

[0033] Since the external airflow is drawn in from the second heat dissipation and dustproof mesh 6 and blown out from the first heat dissipation and dustproof mesh 5, the first heat dissipation and dustproof mesh 5 is positioned higher than the second heat dissipation and dustproof mesh 6. This prevents the heat dissipated from the first heat dissipation and dustproof mesh 5 from being drawn in from the second heat dissipation and dustproof mesh 6, thus ensuring the heat dissipation effect. When the airflow blows out from the first heat dissipation and dustproof mesh 5, the arc-shaped structure of the first heat dissipation and dustproof mesh 5 can reduce the noise generated when in contact with the airflow.

[0034] For further details, please refer to Figure 3 Mounting holes 13 are provided at the four corners of the housing 1, and a flexible pad 14 is provided on the bottom plate surface of the housing 1.

[0035] The housing 1 can be fixed in place by screws through the mounting hole 13. There will inevitably be a gap between the bottom plate of the housing 1 and the mounting position. When the cooling fan 2 in the housing 1 rotates, the housing 1 will vibrate. At this time, collision and friction will occur at the mounting gap, which will generate noise. The flexible pad 14 is located between the mounting position and the bottom plate of the housing 1, which can effectively buffer the collision and friction at the mounting gap and play a role in preventing noise.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel heat dissipation device for a switching power supply, comprising a housing (1), characterized in that, The housing (1) is equipped with a cooling fan (2) inside. Air ducts (3) are provided on both sides of the housing (1). The top end of the air ducts (3) is connected to the top plate of the housing (1), and the bottom end of the air ducts (3) is connected to the bottom sides of the inner cavity of the housing (1). The heat dissipation device also includes a set of cover plates (4). A first heat dissipation dustproof net (5) is provided in the middle of the cover plate (4), and a second heat dissipation dustproof net (6) is provided on both sides of the cover plate (4). A slot (7) for accommodating the cover plate (4) is provided on the top plate of the housing (1), and protrusions (8) are provided on both sides of the inner wall of the slot (7). A locking assembly for fixing the cover plate (4) is provided between the top plate of the housing (1) and the cover plate (4).

2. The heat dissipation device for the novel switching power supply according to claim 1, characterized in that, The locking assembly includes threaded grooves (9) on both sides of the cover plate (4), perforated plates (10) on the top plate of the housing (1) near both sides of the slot (7), and fastening screws (11) that can pass through the perforated plates (10) and are threadedly engaged with the threaded grooves (9).

3. The heat dissipation device for the novel switching power supply according to claim 1, characterized in that, The inner wall of the air duct (3) has a rounded corner structure.

4. The heat dissipation device for the novel switching power supply according to claim 1, characterized in that, The cover plate (4) is provided with handles (12), and the handles (12) are arranged in two groups on both sides of the cover plate (4).

5. The heat dissipation device for the novel switching power supply according to claim 2, characterized in that, The first heat dissipation and dustproof mesh (5) is positioned higher than the second heat dissipation and dustproof mesh (6), and the first heat dissipation and dustproof mesh (5) is an outwardly convex arc structure.

6. The heat dissipation device for the novel switching power supply according to claim 1, characterized in that, The housing (1) has mounting holes (13) at its four corners and a flexible pad (14) on the bottom plate surface of the housing (1).

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