A bridge rectifier convenient for heat dissipation

Abstract

The utility model relates to the technical field of bridge rectifiers, and specifically to a bridge rectifier that is easy to dissipate heat, comprising a box frame, a fixing plate and a rectifier body, a fan for dissipating heat for the bridge rectifier body is fixed by screws on one side of the box frame, a connecting plate A and a connecting plate B entering the box frame are symmetrically welded on the outer side of the fixing plate, a spring A for driving a support block to reset is welded inside the connecting plate A, a through hole for fixing the support block is provided on one side of the box frame, a spring B for resetting the fixed block is welded on one side of the connecting plate A, and a fixing groove for fixing the fixed block is provided on the outer side of the box frame; the utility model solves the problem that the existing bridge rectifier is inconvenient to dissipate heat and protect the rectifier body when in use by arranging the fixing hole, the fan, the connecting plate A, the connecting plate B, the fixing plate, the spring A, the spring B, the support block, the heat conductive layer A, the heat conductive layer B and the fixing block.

Description

Technical Field

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

[0002] A bridge rectifier is composed of four rectifier silicon chips connected in a bridge manner and encapsulated with insulating plastic. High-power bridge rectifiers are encapsulated with a zinc metal shell outside the insulation layer to enhance heat dissipation. There are many types of bridge rectifiers, including flat, round, square and bench shapes. Rectifier bridge stacks are generally used in full-wave rectifier circuits, which are divided into full-bridge and half-bridge.

[0003] Patent No. 201120032513.2 discloses a bridge rectifier, which has the advantages of high packaging efficiency, thin product, and high reliability.

[0004] However, when the existing bridge rectifier is used, a relatively high temperature will be generated on the surface of the rectifier. However, there is only one zinc metal shell outside the rectifier, and the zinc metal shell dissipates heat from the rectifier relatively slowly. The temperature on the surface of the rectifier will remain in a high temperature environment for a long time, which will have a certain impact on the working performance of the rectifier. At the same time, the rectifier is exposed to the external environment during installation, and contact extrusion will occur when the rectifier contacts other devices, which will have a certain impact on the service life of the rectifier. Therefore, a bridge rectifier that is easy to dissipate heat is provided. Utility Model Content

[0005] The main purpose of the utility model is to provide a bridge rectifier that is easy to dissipate heat. The utility model solves the problem that the existing bridge rectifier is inconvenient to dissipate heat and protect the rectifier body when in use by arranging fixing holes, fans, connecting plates A, connecting plates B, fixing plates, springs A, springs B, supporting blocks, heat-conducting layers A, heat-conducting layers B and fixing blocks.

[0006] The technical solution adopted by the utility model to solve its technical problems is a bridge rectifier that is easy to dissipate heat, comprising a box frame, a fixing plate and a rectifier body, a fan for dissipating heat to the bridge rectifier body is fixed by screws on one side of the box frame, a connecting plate A and a connecting plate B entering the box frame are symmetrically welded on the outer side of the fixing plate, a spring A for driving a support block to reset is welded inside the connecting plate A, a through hole for fixing the support block is provided on one side of the box frame, a spring B for resetting the fixing block is welded on one side of the connecting plate A, a fixing groove for fixing the fixing block is provided on the outer side of the box frame, a heat-conducting layer A for transferring heat from the rectifier body is bonded to the inner side of the fixing plate, a heat-conducting layer B for dissipating heat to the rectifier body is fixed by screws on one side of the heat-conducting layer A, and fixing holes for dissipating heat to the rectifier body are provided on the surfaces of the box frame and the fixing plate.

[0007] By adopting the above technical solution, when the rectifier body is working, the surface of the rectifier body will generate temperature. The heat-conducting layer A and the heat-conducting layer B in the fixing plate are respectively made of thermal grease and copper foil. The fine gaps on the copper foil improve the heat dissipation of the rectifier body, and then the thermal grease transfers the heat. Subsequently, the heat is discharged outward through the fixing holes opened on the fixing plate and the box frame surface. At the same time, the fan outside the box frame accelerates the air flow speed on the surface of the rectifier body, thereby facilitating the heat dissipation of the rectifier body.

[0008] When the rectifier body is in use, the rectifier body is placed in the box frame, and then the connecting plate A on the fixing plate is placed in the slide groove opened on one side of the box frame, and the supporting block and the fixing block on the connecting plate A are pressed at the same time, and the spring A and the spring B in the connecting plate A are compressed, and then the supporting block and the fixing block enter the inside of the connecting plate A respectively, and the internal structure of the connecting plate B is the same as that of the connecting plate A, and then the fixing plate is pushed, and then the fixing plate contacts the box frame, and then the spring A drives the supporting block to pop outward, and then the supporting block enters the through hole on the surface of the box frame, and the spring B drives the fixing block to pop outward, and then the fixing block enters the fixing groove, so that the rectifier body is fixed in the box frame, and the rectifier body is protected;

[0009] When the rectifier body fails, the support block in the through hole and the fixed block in the fixed groove are pressed respectively, and then the spring A and spring B in the connecting plate A are pressed, and then the support block and the fixed block enter the inside of the connecting plate A respectively, and then the fixed plate is pulled to move, and then the fixed plate is separated from the box frame, so that the rectifier body is exposed, thereby facilitating the inspection and maintenance of the rectifier body.

[0010] Specifically, a rubber sheet is bonded to one side of the box frame to improve the sealing performance with the fixing plate.

[0011] By adopting the above technical solution, when the fixing plate moves outside the box frame, the rubber sheet outside the box frame contacts the fixing plate, thereby improving the sealing performance between the box frame and the fixing plate.

[0012] Specifically, a slide groove for the connecting plate A to slide is provided on the inner side of the box frame.

[0013] By adopting the above technical solution, when the fixing plate moves in the box frame, the connecting plate A on one side of the fixing plate is placed into the sliding groove provided on the surface of the box frame, thereby improving the stability of the movement of the fixing plate.

[0014] Specifically, a dustproof net is fixed by screws inside the fixing hole to prevent foreign matter from entering the box frame.

[0015] By adopting the above technical solution, when the fixing holes opened on the surface of the box frame and the fixing plate dissipate heat for the rectifier body, the dustproof net in the fixing hole prevents foreign matter from entering the box frame, thereby preventing foreign matter from adhering to the surface of the rectifier body and causing damage.

[0016] Specifically, the input end of the fan is electrically connected to the output end of the external power supply.

[0017] By adopting the above technical solution and connecting to an external power source, the electrical device can work normally.

[0018] Beneficial effects of the utility model:

[0019] (1) The utility model describes a bridge rectifier that is easy to dissipate heat. The rectifier body is placed in a box frame, and then the connecting plate A on the fixing plate is placed in a slide groove opened on one side of the box frame. At the same time, the support block and the fixing block on the connecting plate A are pressed, and the spring A and the spring B in the connecting plate A are compressed. Then the support block and the fixing block enter the interior of the connecting plate A respectively. The internal structure of the connecting plate B is the same as that of the connecting plate A. Then the fixing plate is pushed forward, and then the fixing plate contacts the box frame. Then the spring A drives the support block to pop out, and then the support block enters the through hole on the surface of the box frame, and the spring B drives the fixing block to The rectifier body is fixed to the box frame and then pops out, and then the fixing block enters the fixing groove, so that the rectifier body is fixed in the box frame to protect the rectifier body. When the rectifier body is working, the surface of the rectifier body will generate temperature. The heat-conducting layer A and the heat-conducting layer B in the fixing plate are respectively made of thermal grease and copper foil. The fine gaps on the copper foil improve the heat dissipation of the rectifier body, and then the thermal grease transfers the heat. Subsequently, the heat is discharged outward through the fixing holes opened on the fixing plate and the surface of the box frame. At the same time, the fan outside the box frame accelerates the air flow speed on the surface of the rectifier body, so as to facilitate the heat dissipation of the rectifier body.

[0020] (2) The utility model discloses a bridge rectifier that is easy to dissipate heat. When a rectifier body fails, the support block in the through hole and the fixed block in the fixed groove are pressed respectively, and then the spring A and the spring B in the connecting plate A are pressed. Then the support block and the fixed block enter the interior of the connecting plate A respectively, and then the fixed plate is pulled to move. Then the fixed plate is separated from the box frame, so that the rectifier body is exposed, thereby facilitating the inspection and maintenance of the rectifier body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of a bridge rectifier that is easy to dissipate heat in the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of a fixing plate of a bridge rectifier that is convenient for heat dissipation according to the utility model;

[0024] In the figure: 1. box frame; 2. rubber sheet; 3. rectifier body; 4. fixing block; 5. fixing plate; 6. fan; 7. through hole; 8. dust screen; 9. fixing hole; 10. fixing groove; 11. connecting plate A; 12. connecting plate B; 13. support block; 14. spring A; 15. heat conducting layer A; 16. spring B; 17. heat conducting layer B; 18. slide groove. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In order to dissipate heat and protect the rectifier body 3, as an embodiment of the utility model, Figure 1 , Figure 2 As shown, a bridge rectifier for heat dissipation of the utility model comprises a box frame 1, a fixing plate 5 and a rectifier body 3, a fan 6 for heat dissipation of the bridge rectifier body 3 is fixed by screws on one side of the box frame 1, a connecting plate A11 and a connecting plate B12 entering the box frame 1 are symmetrically welded on the outside of the fixing plate 5, a spring A14 for driving the support block 13 to return is welded inside the connecting plate A11, a through hole 7 for fixing the support block 13 is opened on one side of the box frame 1, a spring B16 for returning the fixing block 4 is welded on one side of the connecting plate A11, a fixing groove 10 for fixing the fixing block 4 is opened on the outside of the box frame 1, a heat-conducting layer A15 for transferring heat from the rectifier body 3 is bonded to the inside of the fixing plate 5, a heat-conducting layer B17 for heat dissipation of the rectifier body 3 is fixed by screws on one side of the heat-conducting layer A15, and fixing holes 9 for heat dissipation of the rectifier body 3 are opened on the surfaces of the box frame 1 and the fixing plate 5.

[0027] When in use, when the rectifier body 3 is working, the surface of the rectifier body 3 will generate temperature. The heat-conducting layer A15 and the heat-conducting layer B17 in the fixing plate 5 are respectively made of thermally conductive silicone grease and copper foil. The fine gaps on the copper foil improve the heat dissipation of the rectifier body 3, and then the thermally conductive silicone grease transfers the heat. Subsequently, the heat is discharged outward through the fixing holes 9 opened on the surfaces of the fixing plate 5 and the box frame 1. At the same time, the fan 6 outside the box frame 1 accelerates the air flow speed on the surface of the rectifier body 3, thereby facilitating the heat dissipation of the rectifier body 3.

[0028] When the rectifier body 3 is in use, the rectifier body 3 is placed in the box frame 1, and then the connecting plate A11 on the fixing plate 5 is placed in the slide groove 18 opened on one side of the box frame 1, and at the same time, the support block 13 and the fixing block 4 on the connecting plate A11 are pressed, and the spring A14 and the spring B16 in the connecting plate A11 are compressed, and then the support block 13 and the fixing block 4 enter the inside of the connecting plate A11 respectively, and the internal structure of the connecting plate B12 is the same as the internal structure of the connecting plate A11, and then the fixing plate 5 is pushed, and then the fixing plate 5 contacts the box frame 1, and then the spring A14 drives the support block 13 to pop outward, and then the support block 13 enters the through hole 7 on the surface of the box frame 1, and the spring B16 drives the fixing block 4 to pop outward, and then the fixing block 4 enters the fixing groove 10, so as to facilitate the fixing of the rectifier body 3 in the box frame 1 and protect the rectifier body 3;

[0029] When the rectifier body 3 fails, the support block 13 in the through hole 7 and the fixed block 4 in the fixed groove 10 are pressed respectively, and then the spring A14 and the spring B16 in the connecting plate A11 are pressed, and then the support block 13 and the fixed block 4 enter the inside of the connecting plate A11 respectively, and then the fixed plate 5 is pulled to move, and then the fixed plate 5 is separated from the box frame 1, so that the rectifier body 3 is exposed, thereby facilitating the inspection and maintenance of the rectifier body 3.

[0030] In order to improve the sealing between the box frame 1 and the fixing plate 5, for example, Figure 1 As shown, the utility model also includes that a rubber sheet 2 is bonded to one side of the box frame 1 to improve the sealing performance with the fixing plate 5 .

[0031] During use, when the fixing plate 5 moves outside the box frame 1 , the rubber sheet 2 outside the box frame 1 contacts the fixing plate 5 , thereby improving the sealing between the box frame 1 and the fixing plate 5 .

[0032] In order to improve the stability of the movement of the fixing plate 5, for example, Figure 1 As shown, the utility model also includes that a slide groove 18 is opened on the inner side of the box frame 1 to enable the connecting plate A11 to slide.

[0033] During use, when the fixing plate 5 moves in the box frame 1 , the connecting plate A11 on one side of the fixing plate 5 is placed into the sliding groove 18 opened on the surface of the box frame 1 , thereby improving the stability of the movement of the fixing plate 5 .

[0034] In order to prevent the rectifier body 3 from being damaged by foreign matter adhering to the surface, for example, Figure 1 As shown, the utility model further includes a dustproof net 8 fixed by screws inside the fixing hole 9 to prevent foreign matter from entering the box frame 1.

[0035] When in use, when the fixing holes 9 opened on the surface of the box frame 1 and the fixing plate 5 dissipate heat for the rectifier body 3, the dustproof net 8 in the fixing hole 9 prevents foreign matter from entering the box frame 1, thereby preventing the surface of the rectifier body 3 from being damaged by foreign matter adhering to the surface.

[0036] In order to use the electrical equipment to work normally, for example, Figure 1 As shown, the utility model also includes that the input end of the fan 6 is electrically connected to the output end of the external power supply.

[0037] When in use, by connecting to an external power source, the electrical equipment can work normally.

[0038] When the utility model is in use, when the rectifier body 3 is working, the surface of the rectifier body 3 will generate temperature, and the heat-conducting layer A15 and the heat-conducting layer B17 in the fixing plate 5 are respectively made of thermally conductive silicone grease and copper foil, and the fine gaps on the copper foil improve the heat dissipation of the rectifier body 3, and then the thermally conductive silicone grease transfers the heat, and then the heat is discharged outward through the fixing holes 9 opened on the surfaces of the fixing plate 5 and the box frame 1, and at the same time, the fan 6 outside the box frame 1 accelerates the air flow speed on the surface of the rectifier body 3, so as to facilitate the heat dissipation of the rectifier body 3;

[0039] When the rectifier body 3 is in use, the rectifier body 3 is placed in the box frame 1, and then the connecting plate A11 on the fixing plate 5 is placed in the slide groove 18 opened on one side of the box frame 1, and at the same time, the support block 13 and the fixing block 4 on the connecting plate A11 are pressed, and the spring A14 and the spring B16 in the connecting plate A11 are compressed, and then the support block 13 and the fixing block 4 enter the inside of the connecting plate A11 respectively, and the internal structure of the connecting plate B12 is the same as the internal structure of the connecting plate A11, and then the fixing plate 5 is pushed, and then the fixing plate 5 contacts the box frame 1, and then the spring A14 drives the support block 13 to pop outward, and then the support block 13 enters the through hole 7 on the surface of the box frame 1, and the spring B16 drives the fixing block 4 to pop outward, and then the fixing block 4 enters the fixing groove 10, so as to facilitate the fixing of the rectifier body 3 in the box frame 1 and protect the rectifier body 3;

[0040] When the rectifier body 3 fails, the support block 13 in the through hole 7 and the fixing block 4 in the fixing groove 10 are pressed respectively, and then the spring A14 and the spring B16 in the connecting plate A11 are pressed, and then the support block 13 and the fixing block 4 enter the inside of the connecting plate A11 respectively, and then the fixing plate 5 is pulled to move, and then the fixing plate 5 is separated from the box frame 1, so that the rectifier body 3 is exposed, so as to facilitate the inspection and maintenance of the rectifier body 3;

[0041] When the fixing plate 5 moves outside the box frame 1, the rubber sheet 2 outside the box frame 1 contacts the fixing plate 5, thereby improving the sealing between the box frame 1 and the fixing plate 5;

[0042] When the fixing plate 5 moves in the box frame 1, the connecting plate A11 on one side of the fixing plate 5 is placed into the sliding groove 18 opened on the surface of the box frame 1, thereby improving the stability of the movement of the fixing plate 5;

[0043] When the fixing holes 9 opened on the surface of the box frame 1 and the fixing plate 5 dissipate heat for the rectifier body 3, the dustproof net 8 in the fixing hole 9 prevents foreign matter from entering the box frame 1, thereby preventing the surface of the rectifier body 3 from being damaged by foreign matter adhering to the surface.

[0044] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A bridge rectifier for heat dissipation, characterized in that: The invention comprises a box frame (1), a fixing plate (5) and a rectifier body (3); a fan (6) for dissipating heat from the bridge rectifier body (3) is fixed by screws on one side of the box frame (1); a connecting plate A (11) and a connecting plate B (12) for entering the box frame (1) are symmetrically welded on the outer side of the fixing plate (5); a spring A (14) for driving a support block (13) to return to its original position is welded inside the connecting plate A (11); a through hole (7) for fixing the support block (13) is opened on one side of the box frame (1); the connecting plate A spring B (16) for returning the fixed block (4) is welded to one side of the box frame (1), a fixing groove (10) for fixing the fixed block (4) is provided on the outer side of the box frame (1), a heat-conducting layer A (15) for transferring heat from the rectifier body (3) is bonded to the inner side of the fixing plate (5), a heat-conducting layer B (17) for dissipating heat from the rectifier body (3) is screwed to one side of the heat-conducting layer A (15), and fixing holes (9) for dissipating heat from the rectifier body (3) are provided on the surfaces of the box frame (1) and the fixing plate (5).

2. A bridge rectifier for facilitating heat dissipation according to claim 1, characterized in that: A rubber sheet (2) is bonded to one side of the box frame (1) to improve the sealing performance with the fixing plate (5).

3. A bridge rectifier for heat dissipation according to claim 1, characterized in that: The inner side of the box frame (1) is provided with a slide groove (18) for the connecting plate A (11) to slide.

4. A bridge rectifier for facilitating heat dissipation according to claim 1, characterized in that: A dustproof net (8) is screwed inside the fixing hole (9) to prevent foreign matter from entering the box frame (1).

5. The bridge rectifier for facilitating heat dissipation according to claim 1, characterized in that: The input end of the fan (6) is electrically connected to the output end of the external power supply.

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