Bridge rectifier convenient for heat dissipation

Abstract

The utility model discloses a bridge rectifier convenient for heat dissipation, and relates to the technical field of rectifiers. A rectifying element is arranged in the shell, cooling fins are fixedly connected to the side wall of the shell in a penetrating mode, a cooling fan is arranged above the cooling fins, an air guide plate is arranged at the output end of the cooling fan, a protection frame is arranged on the face, back to the shell, of each cooling fin, and a top plate is detachably arranged on the top face of the shell. According to the utility model, the heat in the shell can be conducted to the outside through the arranged radiating fins so as to radiate and cool the rectifying element, the air velocity can be accelerated by starting the radiating fan, and the air blown out by the radiating fan can be guided to a plurality of areas of the radiating fins through the air guide plate, so that the radiating fins are radiated, and the radiating efficiency of the rectifying element is improved. Therefore, the radiating efficiency of the radiating fins is improved, the radiating effect is further improved, the rectifying element can be protected, and the rectifying element can be conveniently overhauled.

Description

Technical Field

[0001] The utility model relates to the technical field of rectifiers, in particular to a bridge rectifier convenient for heat dissipation. Background Technique

[0002] A bridge rectifier is formed by connecting four rectifier silicon chips in a bridge shape and encapsulated with insulating plastic on the outside. For high-power bridge rectifiers, a zinc metal shell is added outside the insulating layer for enhanced heat dissipation.

[0003] However, the rectifying elements of the current rectifier are encapsulated inside a plastic box, and the overall heat dissipation effect is not ideal. In addition, the disassembly and assembly of the rectifier shell are rather troublesome, making it inconvenient to repair the internal rectifying elements. In view of the above problems, the inventor proposes a bridge rectifier convenient for heat dissipation to solve the above problems. Content of the Utility Model

[0004] In order to solve the problems of poor heat dissipation, troublesome disassembly and assembly, and inconvenient repair of internal rectifying elements of the current rectifier; the purpose of the utility model is to provide a bridge rectifier convenient for heat dissipation.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a bridge rectifier convenient for heat dissipation, including a housing, a rectifying element is arranged inside the housing, heat dissipation fins are fixedly connected through the side wall of the housing, a heat dissipation fan is arranged above the heat dissipation fins, a wind guiding plate is arranged at the output end of the heat dissipation fan, a protective frame is arranged on the side of the heat dissipation fin facing away from the housing, and a top plate is detachably arranged on the top surface of the housing.

[0006] Preferably, limiting plates are fixedly connected to the four corners of the inner side wall of the housing, and the side of the limiting plate facing away from the housing is in contact with the side wall of the rectifying element. The housing and the limiting plates can provide double protection for the rectifying element to prevent damage to the rectifying element due to collision, and the limiting plates can limit the insertion plate to prevent the top plate from shaking after installation.

[0007] Preferably, a notch is arranged on the top surface of the top plate, the notch corresponds to and cooperates with the terminals of the rectifying element, insertion plates are fixedly connected to the four corners of the bottom surface of the top plate, the insertion plates cooperate with the housing openings of the housing, and the side wall of the insertion plate is in contact with the side wall of the limiting plate. A buckle is arranged on the outer side wall of the housing, and a hook is fixedly connected to the side surface of the top plate. The buckle corresponds to and cooperates with the hook. When installing the top plate, insert the insertion plate into the housing opening of the housing, make the side wall of the insertion plate in contact with the side wall of the limiting plate, and make the notch correspond to the terminals of the rectifying element. Press down the top plate so that the top plate is in contact with the top surface of the housing. Then, lift the buckle, and through the mutual cooperation of the buckle and the hook, the top plate can be limited and fixed to complete the installation of the top plate.

[0008] Preferably, through-holes are provided through four sides of the protection frame. A hollow plate is fixedly connected to a side of the protection frame facing away from the housing. A frame body is provided on a side wall of the heat dissipation fan. The top surface of the frame body is fixedly connected to the inner top wall of the protection frame. The heat dissipation fan is installed through the frame body. By starting the heat dissipation fan, the air flow rate can be accelerated. The air blown out by the heat dissipation fan can be guided to multiple areas of the heat sink through the air guide plate, so as to dissipate heat from the heat sink, thereby improving the heat dissipation efficiency of the heat sink. The provided through-holes and the hollow plate are used to avoid affecting the air circulation inside and outside the protection frame. An air port is provided through the top surface of the protection frame. The heat dissipation fan corresponds to the air port. A protection net is provided at the port of the air port. The air guide plate is located between the heat dissipation fan and the heat sink, and the side wall of the air guide plate is fixedly connected to the outer side wall of the housing. The heat sink is used to export the heat in the housing to the outside to dissipate heat and cool down the rectifying element. The protection net is used to protect the air port to prevent people from touching the rotating heat dissipation fan through the air port.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. For the present utility model, heat dissipation is convenient and the heat dissipation effect is good. The heat in the housing can be exported to the outside through the provided heat sink to dissipate heat and cool down the rectifying element. By starting the heat dissipation fan, the air flow rate can be accelerated. The air blown out by the heat dissipation fan can be guided to multiple areas of the heat sink through the air guide plate, so as to dissipate heat from the heat sink, thereby improving the heat dissipation efficiency of the heat sink and further improving the heat dissipation effect.

[0011] 2. For the present utility model, the rectifying element can be double-protected through the provided housing and the limiting plate, avoiding damage to the rectifying element due to collision, and it is convenient to disassemble and assemble the top plate for overhauling the rectifying element. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of the protection frame of the present utility model.

[0015] Figure 3 It is an exploded view of the present utility model.

[0016] Figure 4This is an enlarged view of part A of the present utility model.

[0017] Figure 5 This is an enlarged view of part B of the present utility model.

[0018] In the figure: 1. Housing; 2. Rectifying element; 3. Heat sink; 4. Protective frame; 5. Through port; 6. Frame body; 7. Cooling fan; 8. Air guide plate; 9. Air port; 10. Protective net; 11. Hollow plate; 12. Limiting plate; 13. Top plate; 14. Notch; 15. Insertion plate; 16. Buckle; 17. Hook. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment: As Figures 1-5 shown, the present utility model provides a bridge rectifier that is convenient for heat dissipation, including a housing 1. A rectifying element 2 is arranged inside the housing 1. A heat sink 3 is fixedly connected to the side wall of the housing 1 in an inserted manner. A cooling fan 7 is arranged above the heat sink 3. An air guide plate 8 is arranged at the output end of the cooling fan 7. A protective frame 4 is arranged on the side of the heat sink 3 facing away from the housing 1. The top surface of the housing 1 is detachably provided with a top plate 13.

[0021] Limiting plates 12 are fixedly connected to the four corners of the inner side wall of the housing 1, and the side of the limiting plate 12 facing away from the housing 1 is in contact with the side wall of the rectifying element 2.

[0022] By adopting the above technical solution, the rectifying element 2 can be double-protected by the housing 1 and the limiting plates 12, avoiding damage to the rectifying element 2 due to collision, and the limiting plates 12 can limit the insertion plate 15, avoiding the top plate 13 from shaking after installation.

[0023] A notch 14 is arranged on the top surface of the top plate 13. The notch 14 corresponds to and cooperates with the terminals of the rectifying element 2. Insertion plates 15 are fixedly connected to the four corners of the bottom surface of the top plate 13. The insertion plates 15 cooperate with the shell openings of the housing 1, and the side walls of the insertion plates 15 are in contact with the side walls of the limiting plates 12. A buckle 16 is arranged on the outer side wall of the housing 1, and a hook 17 is fixedly connected to the side surface of the top plate 13. The buckle 16 corresponds to and cooperates with the hook 17.

[0024] By adopting the above technical solution, when installing the top plate 13, insert the insertion plate 15 into the shell opening of the housing 1, make the insertion plate 15 contact the side wall of the limit plate 12, and make the notch 14 correspond to the terminal of the rectifying element 2. Press the top plate 13 downward to make the top plate 13 contact the top surface of the housing 1. Then, lift the buckle 16, and through the mutual cooperation of the buckle 16 and the hook 17, the top plate 13 can be limited and fixed to complete the installation of the top plate 13.

[0025] Through openings 5 are provided through all four sides of the protective frame 4. A hollow plate 11 is fixedly connected to the side of the protective frame 4 facing away from the housing 1. A frame body 6 is provided on the side wall of the radiator fan 7, and the top surface of the frame body 6 is fixedly connected to the inner top wall of the protective frame 4.

[0026] By adopting the above technical solution, the radiator fan 7 is installed through the frame body 6. Start the radiator fan 7, which can accelerate the air flow rate. Through the air guide plate 8, the air blown out by the radiator fan 7 can be guided to multiple areas of the heat sink 3, thereby dissipating heat from the heat sink 3 to improve the heat dissipation efficiency of the heat sink 3. The provided through openings 5 and the hollow plate 11 are used to avoid affecting the air circulation inside and outside the protective frame 4.

[0027] An air port 9 is provided through the top surface of the protective frame 4. The radiator fan 7 corresponds to the air port 9. A protective net 10 is provided at the port of the air port 9. The air guide plate 8 is located between the radiator fan 7 and the heat sink 3, and the side wall of the air guide plate 8 is fixedly connected to the outer side wall of the housing 1.

[0028] By adopting the above technical solution, the heat sink 3 is used to export the heat inside the housing 1 to the outside to dissipate heat and cool down the rectifying element 2. The protective net 10 is used to protect the air port 9 to prevent people from touching the rotating radiator fan 7 through the air port 9.

[0029] Working principle: When the present utility model is in use, the heat inside the housing 1 can be exported to the outside through the heat sink 3 to dissipate heat and cool down the rectifying element 2. And by starting the radiator fan 7, the air flow rate can be accelerated. Through the air guide plate 8, the air blown out by the radiator fan 7 can be guided to multiple areas of the heat sink 3, thereby dissipating heat from the heat sink 3 to improve the heat dissipation efficiency of the heat sink 3;

[0030] When it is necessary to install the top plate 13, insert the insertion plate 15 into the shell opening of the housing 1, make the insertion plate 15 contact the side wall of the limit plate 12, and make the notch 14 correspond to the terminal of the rectifying element 2. Press the top plate 13 downward to make the top plate 13 contact the top surface of the housing 1. Then, lift the buckle 16, and through the mutual cooperation of the buckle 16 and the hook 17, the top plate 13 can be limited and fixed to complete the installation of the top plate 13. When it is necessary to repair the rectifying element 2, just operate in the reverse direction.

[0031] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these modifications and variations.

Claims

1. A bridge rectifier facilitating heat dissipation, comprising a housing (1), characterized in that: Inside the housing (1), a rectifying element (2) is provided. A heat sink (3) is fixedly connected through the side wall of the housing (1). Above the heat sink (3), a cooling fan (7) is provided. At the output end of the cooling fan (7), a wind guide plate (8) is provided. On the side of the heat sink (3) facing away from the housing (1), a protective frame (4) is provided. On the top surface of the housing (1), a top plate (13) is detachably provided.

2. The bridge rectifier facilitating heat dissipation according to claim 1, wherein At the four corners of the inner side wall of the housing (1), limiting plates (12) are fixedly connected. The side of the limiting plate (12) facing away from the housing (1) is in contact with the side wall of the rectifying element (2).

3. A bridge rectifier facilitating heat dissipation according to claim 1, characterized in that, On the top surface of the top plate (13), a notch (14) is provided. The notch (14) corresponds to and cooperates with the terminals of the rectifying element (2).

4. The bridge rectifier facilitating heat dissipation according to claim 2, wherein At the four corners of the bottom surface of the top plate (13), insertion plates (15) are fixedly connected. The insertion plates (15) cooperate with the housing opening of the housing (1), and the side wall of the insertion plate (15) is in contact with the side wall of the limiting plate (12).

5. A bridge rectifier facilitating heat dissipation as described in claim 1, characterized in that, On the outer side wall of the housing (1), a buckle (16) is provided. On the side surface of the top plate (13), a hook (17) is fixedly connected. The buckle (16) corresponds to and cooperates with the hook (17).

6. The bridge rectifier facilitating heat dissipation according to claim 1, characterized in that, Through openings (5) are provided through the four sides of the protective frame (4). On the side of the protective frame (4) facing away from the housing (1), a perforated plate (11) is fixedly connected.

7. The bridge rectifier for facilitating heat dissipation according to claim 1, wherein, On the side wall of the cooling fan (7), a frame body (6) is provided. The top surface of the frame body (6) is fixedly connected to the inner top wall of the protective frame (4).

8. The bridge rectifier facilitating heat dissipation according to claim 1, wherein, An air port (9) is provided through the top surface of the protective frame (4). The cooling fan (7) corresponds to the air port (9). At the port of the air port (9), a protective net (10) is provided. The wind guide plate (8) is located between the cooling fan (7) and the heat sink (3), and the side wall of the wind guide plate (8) is fixedly connected to the outer side wall of the housing (1).

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