Plastic encapsulated insulated rectifier bridge

Abstract

The utility model belongs to the field of rectifier bridge, specifically is plastic -encapsulated insulation rectifier bridge, including rectifier bridge main part, the inside of rectifier bridge main part is provided with heat abstractor, the heat abstractor includes air duct, the air duct is set up in the inside of rectifier bridge main part, the both sides of rectifier bridge main part are all set up with two air inlets, through setting up heat abstractor in the inside of rectifier bridge main part, when rectifier bridge main part temperature is higher, fan starts and exports the air in the air duct from the air outlet, the outside new air enters from the air inlet, is guided through the inclined surface radiating fin, not only can through the inclined surface radiating fin, air duct air inlet and air outlet to rectifier bridge main part play the heat dissipation effect, the inclined surface radiating fin can play the function of wind -guiding simultaneously, makes the air fast pass through the air duct to guarantee the heat dissipation effect of rectifier bridge main part, avoids rectifier bridge main part temperature to be too high and influences the service life of rectifier bridge main part.

Description

Technical Field

[0001] This utility model relates to the field of rectifier bridges, specifically a plastic-encapsulated insulated rectifier bridge. Background Technology

[0002] The core function of a molded insulated rectifier bridge is to convert alternating current (AC) to direct current (DC). At the same time, it provides electrical isolation through insulating materials to prevent short circuits and leakage, ensuring safety standards. Furthermore, it reduces junction temperature and extends lifespan through optimized heat dissipation design. It is widely used in power adapters, chargers, LED lighting, motor control, photovoltaic inverters, and charging piles to achieve efficient and safe power conversion.

[0003] In the existing technology, although the encapsulation structure of the encapsulated insulated rectifier bridge can ensure the insulation effect of the rectifier bridge, in actual use, the low thermal conductivity of the encapsulation material causes heat to accumulate inside the encapsulation structure, which seriously affects the heat dissipation effect of the rectifier bridge, leading to accelerated aging or even damage of the rectifier bridge, and thus affecting the performance and service life of the rectifier bridge; therefore, the encapsulated insulated rectifier bridge is proposed to address the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, such as the low thermal conductivity of encapsulated insulated rectifier bridges which causes heat accumulation inside the encapsulated structure and severely affects the heat dissipation of the rectifier bridge, this invention proposes an encapsulated insulated rectifier bridge.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a plastic-encapsulated insulated rectifier bridge, including a rectifier bridge body, wherein a heat dissipation mechanism is provided inside the rectifier bridge body; The heat dissipation mechanism includes an air duct that is located inside the rectifier bridge body. Two air inlets are located on each side of the rectifier bridge body. Several sloping heat sinks are fixedly installed at equal intervals inside the air duct and the four air inlets. An air outlet is located on one side of the rectifier bridge body, and a fan is fixedly installed inside the air outlet. Two first dustproof components are respectively provided on both sides of the rectifier bridge body, and the first dustproof components work in conjunction with the air inlets. A second dustproof component is provided on one side of the rectifier bridge body, and the second dustproof component works in conjunction with the air outlet.

[0006] Preferably, the first dustproof component includes a first bracket, which is embedded in the surface of the rectifier bridge body. The surface of the first bracket has an opening that communicates with the air inlet. A mounting bracket is attached to one side of the first bracket, and a filter screen is fixedly installed inside the mounting bracket. The filter screen works in conjunction with the opening. A positioning bracket is attached to the side of the mounting bracket opposite to the first bracket. A first bolt passes through one side of the positioning bracket, and one end of the first bolt passes through the first bracket and is threadedly connected to the rectifier bridge body.

[0007] Preferably, the first bracket is fixedly connected to an inclined duct on the side opposite to the air inlet, the inclined duct is connected to the opening, and a spiral blade is fixedly installed on the inner wall of the opening.

[0008] Preferably, a positioning column is fixedly connected to the side of the positioning frame opposite to the mounting frame. One end of the positioning column passes through the mounting frame and is slidably connected to the inner cavity of the mounting frame. A positioning groove is opened on the side of the first bracket opposite to the mounting frame, and one end of the positioning column is inserted into the inside of the positioning groove.

[0009] Preferably, the second dustproof component includes a second bracket, which is embedded in the surface of the rectifier bridge body. A second bolt passes through the surface of the second bracket, one end of which is threaded to the rectifier bridge body. The second bracket is connected to the air outlet. Two baffles are rotatably connected inside the second bracket, and the two baffles cooperate with each other. Four torsion springs are provided inside the second bracket, one end of each of the four torsion springs is fixedly connected to the inner wall of the second bracket, and the other end of each of the four torsion springs is fixedly connected to the surface of the two baffles respectively.

[0010] Preferably, both ends of the baffle are fixedly connected to connecting rods, and one end of the connecting rod is rotatably connected to the inside of the second bracket.

[0011] Preferably, the second bracket has four support rods fixedly connected inside, and the four torsion springs are slidably sleeved on the surfaces of the four support rods.

[0012] The advantages of this utility model are: 1. This utility model incorporates a heat dissipation mechanism inside the rectifier bridge body. When the rectifier bridge body temperature is high, the fan starts and exhausts the air in the air duct from the air outlet, while fresh air from the outside enters from the air inlet and is guided by the inclined heat sink. This not only dissipates heat from the rectifier bridge body through the inclined heat sink, the air duct inlet, and the air outlet, but also guides the airflow, ensuring the heat dissipation effect of the rectifier bridge body and preventing the rectifier bridge body temperature from becoming too high and affecting its service life. 2. By setting a first dustproof component and a second dustproof component, this utility model can effectively prevent external dust and other impurities from entering the interior of the air duct, thereby preventing dust and other impurities from accumulating in the air duct and affecting the heat dissipation effect of the rectifier bridge body. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the encapsulated insulated rectifier bridge structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the first dustproof component of this utility model; Figure 4 This is a schematic diagram of the second dustproof component of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram of part A.

[0015] In the diagram: 1. Rectifier bridge body; 2. Heat dissipation mechanism; 21. Air duct; 22. Air inlet; 23. Sloping heat sink; 24. Air outlet; 25. Fan; 26. First dustproof component; 2601. First bracket; 2602. Opening; 2603. Sloping duct; 2604. Spiral blade; 2605. Positioning bracket; 2606. Mounting bracket; 2607. Filter screen; 2608. First bolt; 2609. Positioning post; 2610. Positioning groove; 27. Second dustproof component; 2701. Second bracket; 2702. Second bolt; 2703. Baffle; 2704. Torsion spring; 2705. Connecting rod; 2706. Support rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. This application discloses a molded insulated rectifier bridge. (See also...) Figure 1 , Figure 2 , Figure 3 and Figure 4The encapsulated insulated rectifier bridge includes a rectifier bridge body 1, and a heat dissipation mechanism 2 is provided inside the rectifier bridge body 1. The encapsulated insulated rectifier bridge is an electronic component that integrates four diodes of a bridge rectifier circuit into an insulating plastic package. It is mainly used to convert AC power to DC power and belongs to the prior art. It will not be elaborated on further here. The heat dissipation mechanism 2 includes an air duct 21, which is located inside the rectifier bridge body 1. Two air inlets 22 are located on both sides of the rectifier bridge body 1. Several inclined heat sinks 23 are fixedly installed at equal intervals inside the air duct 21 and the four air inlets 22. An air outlet 24 is located on one side of the rectifier bridge body 1. A fan 25 is fixedly installed inside the air outlet 24. Two first dustproof components 26 are respectively provided on both sides of the rectifier bridge body 1. The first dustproof components 26 are used in conjunction with the air inlets 22. A second dustproof component 27 is provided on one side of the rectifier bridge body 1. The second dustproof component 27 is used in conjunction with the air outlet 24. When the temperature of the rectifier bridge body 1 is high, the fan 25 starts and exhausts the air in the air duct 21 from the air outlet 24, while fresh air from the outside enters from the air inlet 22. The first dustproof component 26 and the second dustproof component 27 prevent external dust and other impurities from entering the interior of the air duct 21. The inclined heat sink 23 guides the airflow so that the rectifier bridge body 1 can be cooled through the inclined heat sink 23, the air inlet 22 of the air duct 21 and the air outlet 24.

[0018] Reference Figure 2 and Figure 3 The first dustproof component 26 includes a first bracket 2601, which is embedded in the surface of the rectifier bridge body 1. An opening 2602 is formed on the surface of the first bracket 2601, communicating with the air inlet 22. A mounting bracket 2606 is attached to one side of the first bracket 2601, and a filter 2607 is fixedly installed inside the mounting bracket 2606. The filter 2607 works in conjunction with the opening 2602. A positioning bracket 2605 is attached to the side of the mounting bracket 2606 opposite to the first bracket 2601. A first bolt 2608 passes through one side of 05. One end of the first bolt 2608 passes through the first bracket 2601 and is threadedly connected to the rectifier bridge body 1. The first bracket 2601 is connected to the rectifier bridge body 1 by the first bolt 2608, and the position of the mounting bracket 2606 and the first bracket 2601 is fixed by the positioning bracket 2605 and the first bolt 2608. When the fresh air from the outside enters the air inlet 22 through the opening 2602, the filter screen 2607 can effectively prevent dust and other impurities from the outside from entering the interior of the air duct 21.

[0019] Reference Figure 3A sloping duct 2603 is fixedly connected to the side of the first bracket 2601 opposite to the air inlet 22. The sloping duct 2603 is connected to the opening 2602, and a spiral blade 2604 is fixedly installed on the inner wall of the opening 2602. By setting the sloping duct 2603 on the side of the first bracket 2601 opposite to the air inlet 22 and installing the spiral blade 2604 inside the opening 2602, when the outside air passes through the spiral blade 2604, the fresh air is rotated by the spiral blade 2604 to increase the wind speed. Furthermore, due to the sloping design of the sloping duct 2603, the fresh air accelerated by the spiral blade 2604 enters from the larger end of the sloping duct 2603 and exits from the smaller end of the sloping duct 2603, thereby providing a secondary acceleration effect on the fresh air and increasing the speed of the fresh air passing through the air duct 21, so that the fresh air can quickly remove the heat inside the rectifier bridge body 1.

[0020] Reference Figure 3 A positioning post 2609 is fixedly connected to the side of the positioning frame 2605 opposite to the mounting frame 2606. One end of the positioning post 2609 passes through the mounting frame 2606 and is slidably connected to the inner cavity of the mounting frame 2606. A positioning groove 2610 is provided on the side of the first bracket 2601 opposite to the mounting frame 2606. One end of the positioning post 2609 is inserted into the inside of the positioning groove 2610. By having one end of the positioning post 2609 pass through the mounting frame 2606 and be inserted into the inside of the positioning groove 2610, the mounting frame 2606 is clamped between the first bracket 2601 and the positioning frame 2605. At the same time, the positioning post 2609 and the positioning groove 2610 stabilize the position of the mounting frame 2606, preventing the mounting frame 2606 from shifting position and affecting the position of the filter screen 2607.

[0021] Reference Figure 2 and Figure 4The second dustproof component 27 includes a second bracket 2701, which is embedded in the surface of the rectifier bridge body 1. A second bolt 2702 passes through the surface of the second bracket 2701, and one end of the second bolt 2702 is threaded to the rectifier bridge body 1. The second bracket 2701 is connected to the air outlet 24. Two baffles 2703 are rotatably connected inside the second bracket 2701, and the two baffles 2703 work together. Four torsion springs 2704 are installed inside the second bracket 2701, and one end of each of the four torsion springs 2704 is connected to the second bracket 2701. The inner wall of 701 is fixedly connected, and the other ends of the four torsion springs 2704 are fixedly connected to the surfaces of the two baffles 2703 respectively. The second bracket 2701 is fixedly connected to the rectifier bridge body 1 by the second bolt 2702, and the baffles 2703 are supported by the torsion springs 2704. When the heat dissipation is not working, the baffles 2703 prevent external dust and other impurities from entering the interior of the air duct 21 through the air outlet 24. When the heat dissipation is working, the baffles 2703 are pushed open by the wind force so that the hot air in the air duct 21 can be discharged through the air outlet 24.

[0022] Reference Figure 4 and Figure 5 Both ends of the baffle 2703 are fixedly connected to a connecting rod 2705. One end of the connecting rod 2705 is rotatably connected to the inside of the second bracket 2701. By rotatably connecting one end of the connecting rod 2705 to the inside of the second bracket 2701, the position of the baffle 2703 inside the second bracket 2701 is stabilized by the connecting rod 2705, so as to prevent the baffle 2703 from falling off and affecting the dustproof work.

[0023] Reference Figure 4 and Figure 5 The second bracket 2701 has four support rods 2706 fixedly connected inside, and four torsion springs 2704 are slidably sleeved on the surface of the four support rods 2706 respectively. By setting the support rods 2706 inside the second bracket 2701, the position of the torsion springs 2704 can be stabilized by the support rods 2706, so as to avoid the torsion springs 2704 from being displaced or twisted, which would affect the support effect.

[0024] Working principle: The first bracket 2601 is embedded in the surface of the rectifier bridge body 1, and the mounting bracket 2606 is attached to the surface of the first bracket 2601. Then, the positioning bracket 2605 is attached to one side of the mounting bracket 2606. At this time, one end of the positioning post 2609 passes through the mounting bracket 2606 and is inserted into the positioning groove 2610 to stabilize the mounting bracket 2606 between the positioning bracket 2605 and the first bracket 2601. Then, one end of the first bolt 2608 passes through the positioning bracket 2605 and the first bracket 2601 and is threaded to the rectifier bridge body 1. After completing the installation of the first dustproof component 26, the second bracket 2701 is then embedded in the surface of the rectifier bridge body 1, and one end of the second bolt 2702 is threaded through the second bracket 2701 and connected to the rectifier bridge body 1, thus completing the installation of the second dustproof component 27. This also facilitates maintenance of both the first and second dustproof components 26 and 27. When the temperature of the rectifier bridge body 1 is high, the fan 25 starts and exhausts the air in the air duct 21 from the air outlet 24, while fresh outside air enters from the air inlet 22 and passes through the filter 2607. To prevent external dust and other impurities from entering the air inlet 22 through the opening 2602 with the fresh air, the spiral blades 2604 rotate the fresh air as it passes through the opening 2602, thereby increasing the airflow speed. Furthermore, due to the inclined design of the sloping duct 2603, the fresh air, accelerated by the spiral blades 2604, enters from the larger end of the sloping duct 2603 and exits from the smaller end, providing a secondary acceleration effect. This increases the speed of the fresh air as it passes through the air duct 21, allowing it to quickly pass through the air duct 21 and pass through the inclined heat sink 2. 3. The air is guided, and the fresh air carrying heat is discharged through the air outlet 24. The rectifier bridge body 1 is cooled by the inclined heat sink 23, the air inlet 22 of the air duct 21 and the air outlet 24. When the cooling is not working, the position of the torsion spring 2704 is stabilized by the support rod 2706 and the position of the baffle 2703 is stabilized by the connecting rod 2705. The torsion spring 2704 drives the baffle 2703 to reset, so that the baffle 2703 can close the second support 2701, thereby preventing external dust and other impurities from entering the air duct 21 through the air outlet 24.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A plastic-encapsulated insulated rectifier bridge, characterized in that: It includes a rectifier bridge body (1), and a heat dissipation mechanism (2) is provided inside the rectifier bridge body (1). The heat dissipation mechanism (2) includes an air duct (21), which is located inside the rectifier bridge body (1). Two air inlets (22) are located on both sides of the rectifier bridge body (1). Several inclined heat sinks (23) are fixedly installed at equal intervals inside the air duct (21) and the four air inlets (22). An air outlet (24) is located on one side of the rectifier bridge body (1). A fan (25) is fixedly installed inside the air outlet (24). Two first dustproof components (26) are respectively provided on both sides of the rectifier bridge body (1). The first dustproof components (26) are used in conjunction with the air inlets (22). A second dustproof component (27) is provided on one side of the rectifier bridge body (1). The second dustproof component (27) is used in conjunction with the air outlet (24).

2. The encapsulated insulated rectifier bridge according to claim 1, characterized in that: The first dustproof component (26) includes a first bracket (2601), which is embedded in the surface of the rectifier bridge body (1). An opening (2602) is provided on the surface of the first bracket (2601), which is connected to the air inlet (22). A mounting bracket (2606) is attached to one side of the first bracket (2601). A filter screen (2607) is fixedly installed inside the mounting bracket (2606). The filter screen (2607) is used in conjunction with the opening (2602). A positioning bracket (2605) is attached to the side of the mounting bracket (2606) opposite to the first bracket (2601). A first bolt (2608) passes through one side of the positioning bracket (2605). One end of the first bolt (2608) passes through the first bracket (2601) and is threadedly connected to the rectifier bridge body (1).

3. The encapsulated insulated rectifier bridge according to claim 2, characterized in that: The first bracket (2601) is fixedly connected to a slanted duct (2603) on the side opposite to the air inlet (22). The slanted duct (2603) is connected to the opening (2602). The inner wall of the opening (2602) is fixedly installed with a spiral blade (2604).

4. The encapsulated insulated rectifier bridge according to claim 2, characterized in that: A positioning post (2609) is fixedly connected to the side of the positioning frame (2605) opposite to the mounting frame (2606). One end of the positioning post (2609) passes through the mounting frame (2606) and is slidably connected to the inner cavity of the mounting frame (2606). A positioning groove (2610) is provided on the side of the first bracket (2601) opposite to the mounting frame (2606). One end of the positioning post (2609) is inserted into the inside of the positioning groove (2610).

5. The encapsulated insulated rectifier bridge according to claim 1, characterized in that: The second dustproof component (27) includes a second bracket (2701), which is embedded in the surface of the rectifier bridge body (1). A second bolt (2702) passes through the surface of the second bracket (2701). One end of the second bolt (2702) is threadedly connected to the rectifier bridge body (1). The second bracket (2701) is connected to the air outlet (24). Two baffles (2703) are rotatably connected inside the second bracket (2701). The two baffles (2703) work together. Four torsion springs (2704) are provided inside the second bracket (2701). One end of each of the four torsion springs (2704) is fixedly connected to the inner wall of the second bracket (2701). The other end of each of the four torsion springs (2704) is fixedly connected to the surface of the two baffles (2703).

6. The encapsulated insulated rectifier bridge according to claim 5, characterized in that: Both ends of the baffle (2703) are fixedly connected to connecting rods (2705), and one end of the connecting rod (2705) is rotatably connected to the inside of the second bracket (2701).

7. The encapsulated insulated rectifier bridge according to claim 5, characterized in that: The second bracket (2701) has four support rods (2706) fixedly connected inside, and the four torsion springs (2704) are respectively slidably sleeved on the surface of the four support rods (2706).

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