Three-phase common-mode inductor with efficient heat dissipation

Abstract

The utility model relates to the field of three-phase common-mode inductors, and discloses an efficient heat dissipation three-phase common-mode inductor which comprises a shell, the front side of the shell is connected with a fixing ring through a dismounting assembly, the fixing ring is dismounted through the dismounting assembly, a plurality of windings are wound on the outer wall of the fixing ring, and the windings are wound on the outer side of the shell. The outer wall of the fixing ring is fixedly connected with a rubber sheet used for separating the windings, a cavity is formed in the fixing ring, a heat dissipation assembly used for conducting heat dissipation on the windings is arranged in the cavity, the bottom side of the shell is fixedly connected with a bottom plate, and the left side and the right side of the bottom plate are each provided with a bolt used for fixing the bottom plate. According to the three-phase common-mode inductor, a worker can conveniently replace the winding, the convenience of the three-phase common-mode inductor is improved, the winding is prevented from being damaged due to serious internal heat accumulation, and the heat dissipation effect of the three-phase common-mode inductor is improved.

Description

Technical Field

[0001] This utility model relates to the field of three-phase common-mode inductors, and more particularly to a high-efficiency heat-dissipating three-phase common-mode inductor. Background Technology

[0002] A three-phase common-mode inductor is an electronic component used in three-phase circuits. It mainly consists of a magnetic core and windings, typically with three windings corresponding to the three phase lines of a three-phase power supply. Its working principle utilizes electromagnetic induction to generate high impedance for common-mode signals in a three-phase circuit, suppressing common-mode interference current, while presenting low impedance for differential-mode signals, allowing them to pass normally. This provides filtering and anti-interference capabilities, ensuring stable operation of the three-phase circuit and improving the system's electromagnetic compatibility. It is widely used in power electronic equipment, frequency converters, motor drive systems, and other fields.

[0003] However, current three-phase common-mode inductors have the following drawbacks: Inconvenient winding replacement: The structural design of current three-phase common-mode inductors does not fully consider the ease of operation for staff. The winding replacement process is cumbersome and complex, potentially involving numerous disassembly steps, which is time-consuming and labor-intensive, increasing maintenance costs and difficulty, and hindering rapid fault repair and equipment restoration. Poor heat dissipation: There is an internal heat accumulation problem. The winding has limited heat dissipation pathways, and heat easily accumulates, leading to increased temperature. This not only affects the inductor's performance but also accelerates winding aging and damage over time, reducing its lifespan and making it unable to meet high-load operation requirements.

[0004] In response to this technical problem, this application proposes a three-phase common-mode inductor with high heat dissipation. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency heat dissipation three-phase common-mode inductor. This invention aims to facilitate the replacement of windings by operators, improve the convenience of three-phase common-mode inductors, prevent severe internal heat accumulation and damage to the windings, and enhance the heat dissipation effect of three-phase common-mode inductors.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-efficiency heat dissipation three-phase common-mode inductor includes a housing. A retaining ring is connected to the front side of the housing via a disassembly assembly, which allows the retaining ring to be disassembled. Multiple windings are wound around the outer wall of the retaining ring. Rubber sheets for separating the windings are fixedly connected to the outer wall of the retaining ring. A cavity is formed inside the retaining ring, and a heat dissipation assembly for dissipating heat from the windings is disposed inside the cavity. A base plate is fixedly connected to the bottom side of the housing, and bolts for fixing the base plate are provided on both the left and right sides of the base plate.

[0008] Furthermore, the disassembly assembly includes annular holes on the left and right sides of the outer casing, with multiple first fixing rods fixedly connected inside the annular holes, and multiple second fixing rods fixedly connected to both sides of the cavity.

[0009] Furthermore, a fixing tube is fixedly connected between the plurality of first fixing rods, and a metal tube is fixedly connected between the plurality of second fixing rods. An insert rod is slidably connected inside the fixing tube, and the insert rod is inserted into the inside of the metal tube.

[0010] Furthermore, the outer wall of the insertion rod is fixedly connected with multiple limiting rods, which are slidably connected inside the fixed tube and inserted into the metal tube.

[0011] Furthermore, the insert has an internal threaded connection to a threaded rod, the end of the fixing tube is rotatably connected to a handle, the end of the threaded rod is rotatably connected to the inside of the fixing tube, and the end of the threaded rod is fixedly connected to the inside of the handle.

[0012] Furthermore, the heat dissipation assembly includes two fans fixedly connected inside the cavity, and a silicone pad for heat conduction is fixedly connected between the fans and the cavity.

[0013] Furthermore, the end of the winding penetrates through the base plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the threaded rod is rotated by rotating the handle, which in turn causes the insertion rod to slide under the action of the limiting rod and the threaded rod and insert or detach from the metal tube, thereby making the fixing ring easy to disassemble, facilitating the replacement of the winding by the staff, and improving the convenience of the three-phase common mode inductor.

[0016] 2. In this utility model, an internal air duct is formed by opening cavities and annular holes in the fixed ring and the outer shell, and a fan and a heat-conducting silicone pad are installed inside the cavity, thereby dissipating heat inside the fixed ring, preventing severe heat accumulation inside the winding and damage, and improving the heat dissipation effect of the three-phase common mode inductor. Attached Figure Description

[0017] Figure 1 A perspective view of a high-efficiency heat dissipation three-phase common-mode inductor proposed in this utility model;

[0018] Figure 2 This is a side view of a high-efficiency heat dissipation three-phase common-mode inductor proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a high-efficiency heat dissipation three-phase common-mode inductor proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the fixed tube of a high-efficiency heat dissipation three-phase common-mode inductor proposed in this utility model.

[0021] Legend:

[0022] 1. Outer shell; 2. Rubber sheet; 3. Winding; 4. Base plate; 5. Bolt; 6. First fixing rod; 7. Silicone pad; 8. Fan; 9. Rotary handle; 10. Fixing ring; 11. Second fixing rod; 12. Metal tube; 13. Fixing tube; 14. Insert rod; 15. Limiting rod; 16. Threaded rod. Detailed Implementation

[0023] 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 protection scope of the present utility model.

[0024] Reference Figures 1-3 This utility model provides an embodiment of a high-efficiency heat dissipation three-phase common-mode inductor, including a housing 1. A fixing ring 10 is connected to the front side of the housing 1. Multiple windings 3 are wound around the outer wall of the fixing ring 10. A rubber sheet 2 for separating the windings 3 is fixedly connected to the outer wall of the fixing ring 10. The rubber sheet 2 is made of a high thermal conductivity insulating material, which not only serves as insulation to prevent short circuits between the windings 3, but also quickly conducts the heat generated by the windings 3 to the housing 1. A cavity is opened inside the fixing ring 10. A base plate 4 is fixedly connected to the bottom side of the housing 1. The left and right sides of the base plate 4 are provided with... Bolts 5 secure the base plate 4. Two fans 8 are fixedly connected inside the cavity. The two fans 8 dissipate heat from the inside of the fixing ring 10 and send the heat out through the cavity inside the fixing ring 10. This blows away the heat accumulated on the outer wall of the fixing ring 10 of the winding 3, preventing severe heat buildup inside the winding 3 from causing damage. A silicone pad 7 for heat conduction is fixedly connected between the fans 8 and the cavity. The end of the winding 3 passes through the base plate 4. The end of the winding 3 is fixed by passing through the base plate 4, which facilitates the connection of the end of the winding 3 to equipment that requires the use of a three-phase common mode inductor.

[0025] Reference Figures 2-4The outer casing 1 has annular holes on both its left and right sides. Multiple first fixing rods 6 are fixedly connected inside the annular holes. Multiple second fixing rods 11 are fixedly connected to both sides of the cavity. Fixing tubes 13 are fixedly connected between the multiple first fixing rods 6. Metal tubes 12 are fixedly connected between the multiple second fixing rods 11. Insertion rods 14 are slidably connected inside the fixing tubes 13 and inserted into the metal tubes 12. By inserting the insertion rods 14 into the metal tubes 12, the metal tubes 12 and the fixing tubes 13 are fixed together, thereby fixing the fixing ring 10 to the outer casing 1. Multiple limiting rods 15 are fixedly connected to the outer wall of the insertion rods 14. The limiting rod 15 is slidably connected inside the fixed tube 13 and inserted into the metal tube 12. Multiple limiting rods 15 allow the insertion rod 14 to slide inside the fixed tube 13 instead of rotating. The insertion rod 14 is threadedly connected to a threaded rod 16. The end of the fixed tube 13 is rotatably connected to a handle 9. The end of the threaded rod 16 is rotatably connected inside the fixed tube 13 and fixedly connected inside the handle 9. The handle 9 causes the threaded rod 16 to rotate, thereby allowing the insertion rod 14 to slide inside the fixed tube 13 under the restriction of the limiting rod 15 and the action of the threaded rod 16.

[0026] Working principle: First, the operator winds the winding 3 onto the fixing ring 10, then places the fixing ring 10 in front of the outer shell 1, aligning the fixing tube 13 and the metal tube 12. Next, the operator rotates the handle 9 to rotate the threaded rod 16. Due to the restriction of the limiting rod 15, the insertion rod 14 slides inside the fixing tube 13 under the action of the threaded rod 16, and slides into the metal tube 12. Finally, the insertion rod 14 will be inserted into the metal tube 12, thus fixing the fixing ring 10 to the outer shell 1. Then, the end of the winding 3 is passed through the base plate 4, and the bottom... The plate 4 is fixed to the equipment with bolts 5, and then the end of the winding 3 is connected to the equipment. After that, it can be put into operation. When the three-phase common mode inductor is working, the two fans 8 inside the cavity will dissipate heat from the inside of the fixing ring 10 and send the heat out through the cavity inside the fixing ring 10. This blows away the heat accumulated on the outer wall of the fixing ring 10 of the winding 3, preventing the winding 3 from being damaged due to severe heat accumulation inside. At the same time, the silicone pad 7 transfers the heat on the inner wall of the fixing ring 10 to the cavity, so as to facilitate the heat dissipation of the fans 8 and further improve the heat dissipation effect.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency heat dissipation three-phase common-mode inductor, characterized in that: Including the shell (1), the front side of the shell (1) is connected with the fixed ring (10) through the disassembly assembly, the fixed ring (10) is disassembled through the disassembly assembly, the outer wall of the fixed ring (10) is wound with a plurality of windings (3), the outer wall of the fixed ring (10) is fixedly connected with a rubber sheet (2) for separating the windings (3), the inside of the fixed ring (10) is provided with a cavity, the inside of the cavity is provided with a heat dissipation assembly for heat dissipation of the winding (3), the bottom side of the shell (1) is fixedly connected with a bottom plate (4), the left and right sides of the bottom plate (4) are provided with bolts (5) for fixing the bottom plate (4).

2. The high efficient heat dissipation three-phase common-mode inductor according to claim 1, characterized in that: The disassembly assembly comprises annular holes opened in the left and right sides of the shell (1), and a plurality of first fixing rods (6) are fixedly connected inside the annular holes.

3. The high efficient thermal dissipation three-phase common-mode inductor of claim 2, wherein: A plurality of the first fixing rods (6) are fixedly connected with a fixed tube (13), a plurality of the second fixing rods (11) are fixedly connected with a metal tube (12), the inside of the fixed tube (13) is slidably connected with a plug rod (14), and the plug rod (14) is inserted into the inside of the metal tube (12).

4. The high efficient thermal dissipation three-phase common-mode inductor of claim 3, wherein: The outer wall of the plug rod (14) is fixedly connected with a plurality of limiting rods (15), the limiting rods (15) are slidably connected in the inside of the fixed tube (13), and the limiting rods (15) are inserted into the inside of the metal tube (12).

5. The high efficient thermal dissipation three-phase common-mode inductor of claim 4, wherein: The inside of the plug rod (14) is threadedly connected with a threaded rod (16), the end of the fixed tube (13) is rotatably connected with a handle (9), the end of the threaded rod (16) is rotatably connected in the inside of the fixed tube (13), and the end of the threaded rod (16) is fixedly connected in the inside of the handle (9).

6. The high efficient thermal dissipation three-phase common-mode inductor of claim 1, wherein: The heat dissipation assembly comprises two fans (8) fixedly connected in the inside of the cavity, and silica gel pads (7) for heat conduction are fixedly connected between the fans (8) and the cavity.

7. The high efficient thermal dissipation three-phase common-mode inductor of claim 1, wherein: The end of the winding (3) penetrates the bottom plate (4).

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