A magnetic core assembly structure

Abstract

The present application relates to the technical field of transformers, and specifically discloses a magnetic core assembly structure, which includes a magnetic core frame; a skeleton, on which a plurality of mounting grooves are arranged; a magnetic column, which is arranged in the mounting groove, and ventilation holes are provided on the magnetic core frame, the skeleton and the magnetic column; a mounting cylinder, which is inserted into the ventilation hole, and the outer wall of the mounting cylinder is respectively against the inner wall of the ventilation hole on the skeleton and the magnetic column; a blocking component, which includes a partition, a block, an elastic member and a connecting rod, wherein two partitions are provided and are respectively located at the two ends of the mounting cylinder, and two blocks are provided, and a mounting hole is provided on the partition, and the block can slide relative to the mounting cylinder, and the connecting rod is provided between the two blocks, and the elastic member is connected between the block and the mounting cylinder, and the elastic member makes the block press against the inner wall of the mounting hole. The mounting cylinder in the present application is sleeved in the magnetic column, so that the magnetic column can be protected and the influence of dust and water vapor on the magnetic column can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a magnetic core assembly structure. Background Art

[0002] Currently in the transformer industry, in order to prevent core saturation, reduce temperature rise and reduce energy consumption, segmented air gaps are often set on the middle column of the core. Segmented air gaps refer to the middle column of the core having multiple sections of non-ferromagnetic media, which can be air, gaskets or adhesive layers.

[0003] The center column of the magnetic core is usually provided with ventilation holes, and a fan is provided on the outside of the magnetic core, so that the fan can blow air into the ventilation holes to accelerate the internal air flow, thereby taking away the heat on the center column and achieving heat dissipation of the center column. When the magnetic core is not in operation, the magnetic core stops generating heat, and the blades of the fan on the outside are in a stationary state, so dust or water vapor is easy to enter the ventilation holes on the center column of the magnetic core. The dust attached to the inner wall of the ventilation holes will affect the heat dissipation effect of the center column, and the water vapor will easily cause the magnetic column to rust or corrode, which will easily affect the normal use of the magnetic column in the long run. Summary of the invention

[0004] In order to reduce the impact of the provision of ventilation holes on the magnetic columns, the present application provides a magnetic core assembly structure.

[0005] A magnetic core assembly structure provided in this application adopts the following technical solution:

[0006] A magnetic core assembly structure includes a magnetic core frame;

[0007] A skeleton, arranged in the magnetic core frame, and provided with a plurality of mounting slots;

[0008] A plurality of magnetic columns are provided, each of which is located in one of the mounting slots, and ventilation holes are provided on the magnetic core frame, the skeleton and the magnetic columns;

[0009] An installation tube is inserted into the ventilation hole, and the outer wall of the installation tube abuts against the inner wall of the ventilation hole on the frame and the magnetic column respectively;

[0010] The sealing assembly includes a partition, a block, an elastic member and a connecting rod. Two partitions are provided and are respectively located at the two ends of the mounting tube. Two blocks are provided and correspond to the two partitions respectively. A mounting hole is opened on the partition. The block can slide relative to the mounting tube. The connecting rod is fixedly connected between the two blocks. The elastic member is connected between the block and the mounting tube. The elastic member makes the block press against the inner wall of the corresponding mounting hole so that the block blocks the corresponding mounting hole when the magnetic core is in a non-working state. When the magnetic core is in a working state, wind enters one end of the mounting tube, and the wind force pushes the block and the connecting rod to slide, so that the mounting hole is opened.

[0011] By adopting the above technical scheme, the installation cylinder is sleeved in the center of the magnetic column, so that the air flowing in from the outside is not easy to directly contact the magnetic column, which can reduce the adverse effects of dust and water vapor on the magnetic column; during the assembly process of the magnetic core, after all the magnetic columns are installed in the installation groove, the installation cylinder is inserted into the ventilation hole on the magnetic column, which can limit the magnetic column to ensure the concentricity between the magnetic columns, thereby ensuring the assembly effect; when the magnetic core is working, the external fan is in operation, and the wind drives the block to slide to the outside of the installation hole, and the air in the installation cylinder can continue to circulate, so that dust is not easy to adhere to the inner wall of the installation cylinder; when the magnetic core is in a non-working state, the external fan stops running, and the block is located in the installation hole at this time, blocking the installation hole, so that dust and water vapor from the outside are not easy to enter the installation cylinder, which can achieve protection of the installation cylinder; therefore, the present application can not only protect the magnetic column through the installation cylinder, but also reduce the dust attached to the inner wall of the installation cylinder, thereby ensuring the thermal conductivity of the installation cylinder and achieving rapid heat dissipation of the magnetic column.

[0012] Optionally, the stopper is in the shape of a truncated cone, and the inner wall of the mounting hole is matched with the truncated cone surface of the stopper.

[0013] By adopting the above technical solution, the blocking effect of the stopper on the mounting hole can be enhanced.

[0014] Optionally, one end of the mounting tube is fixedly connected with a positioning ring.

[0015] By adopting the above technical solution, during the assembly process, after the installation tube is installed on the frame, the positioning ring can limit the sliding of the installation tube, thereby achieving the positioning of the installation tube, making the assembly process simpler.

[0016] Optionally, the frame includes a first frame body and a second frame body, the first frame body and the second frame body are both provided with a plurality of mounting grooves, and the first frame body and the second frame body are mutually clamped.

[0017] By adopting the above technical solution, one of the frames can be used as the skeleton, or the structure obtained by combining the first frame and the second frame can be used as the skeleton, so as to adapt to different needs.

[0018] Optionally, a plurality of glue dispensing grooves are evenly spaced apart on the skeleton along the arrangement direction of the magnetic columns.

[0019] By adopting the above technical solution, after all the magnetic columns are installed in the corresponding installation grooves, glue can be applied to the glue dispensing groove. All the magnetic columns can be fixed in one application. The gluing process is simpler and helps to improve work efficiency.

[0020] Optionally, avoidance grooves are provided at both ends of the frame.

[0021] By adopting the above technical solution, there is no direct contact between the magnetic column and the magnetic core frame, and the avoidance groove provides a certain buffer space. Therefore, even if the magnetic column expands due to heat during the subsequent furnace welding process, the magnetic column is not easy to squeeze the magnetic core frame, thereby reducing the possibility of cracking of the magnetic core frame and helping to ensure product quality.

[0022] Optionally, fan blades are fixedly connected to the connecting rod, and the fan blades are provided in plurality and arranged in a circular array, so that when ventilation is carried out in the installation cylinder, wind force drives the fan blades and the connecting rod to rotate, and a cleaning assembly is provided between the two blocks, and the cleaning assembly is used to abut against the inner wall of the installation cylinder, so that when the connecting rod and the block rotate, the cleaning assembly is driven to rotate to wipe off the dust on the inner wall of the installation cylinder.

[0023] By adopting the above technical solution, when the air in the mounting cylinder is continuously circulated, the circulating air can drive the fan blades to rotate, and the fan blades drive the connecting rod and the block to rotate, thereby causing the cleaning assembly to rotate, thereby cleaning the inner wall of the mounting cylinder, and further reducing the dust attached to the inner wall of the mounting cylinder, thereby ensuring the thermal conductivity of the mounting cylinder and the heat dissipation effect of the magnetic column.

[0024] Optionally, the cleaning assembly includes a support rod and an expansion piece, the support rod is fixedly connected between two blocks, the expansion piece is sleeved on the outside of the support rod, the expansion piece is in the shape of an elongated strip and is arranged along the length direction of the support rod, the two ends of the expansion piece are respectively fixedly connected to the two blocks, an air inlet is provided at one end of the expansion piece close to the air inlet side of the mounting tube, and an air outlet is provided at one end of the expansion piece close to the air outlet side of the mounting tube, the area of ​​the air inlet is larger than the area of ​​the air outlet, so that when the mounting tube is ventilated, the expansion piece bulges and the outer wall of the expansion piece abuts against the inner wall of the mounting tube.

[0025] By adopting the above technical scheme, during the process of ventilation into the ventilation hole, since the air intake of the expansion piece is greater than the air outlet, the expansion piece can swell, and the swollen expansion piece is against the inner wall of the mounting tube, so that when the connecting rod and the stopper rotate, the expansion piece can be driven to rotate, thereby cleaning the dust attached to the inner wall of the mounting tube; at the same time, the air in the expansion piece can exchange heat with the inner wall of the mounting tube, and the air flowing in the expansion piece can take away part of the heat of the mounting tube, thereby helping to further enhance the heat dissipation effect of the mounting tube and the magnetic column; in addition, since the expansion piece is flexible, the contact area between the expansion piece and the mounting tube can be increased after it swells, thereby enhancing the cleaning effect, and the expansion piece and the mounting tube are in flexible contact, and when relative sliding occurs between the expansion piece and the mounting tube, the heat generated by friction is less, which can reduce the impact of the cleaning process of the expansion piece on the heat dissipation effect.

[0026] Optionally, the support rod is arranged in a spiral shape.

[0027] By adopting the above technical solution, the support rod can limit the extension direction of the expansion piece, so that the expansion piece is also arranged in a spiral shape after bulging, which helps to increase the contact area between the expansion piece and the mounting tube, thereby enhancing the cleaning effect of the mounting tube and the heat exchange effect between the expansion piece and the mounting tube.

[0028] Optionally, each of the blocks is provided with a connecting pipe connected to the interior of the expansion piece, and a wind shield is fixedly connected to the mounting tube. When the block is located in the mounting hole, the wind shield blocks the end of the connecting pipe. When the block is located outside the mounting hole, the wind shield is located outside the end of the connecting pipe, and the end of the connecting pipe is in an open state.

[0029] By adopting the above technical solution, when the magnetic core is in a non-working state, external dust is not easy to enter the expansion member, thereby reducing the dust in the expansion member, thereby ensuring the heat exchange effect between the expansion member and the mounting tube.

[0030] In summary, this application includes the following beneficial technical effects:

[0031] 1. The installation tube is set in the center of the magnetic column, so that dust and water vapor from the outside are not easy to contact the magnetic column, thereby protecting the magnetic column and helping to ensure the normal use of the magnetic column.

[0032] 2. When the magnetic core is working, the wind pushes the block to slide, and the block is located outside the mounting hole. The mounting hole is in an open state, and the air in the mounting tube can flow continuously, thereby achieving heat dissipation of the mounting tube and the magnetic column; when the magnetic core is in a non-working state, the block is located in the mounting hole, blocking the mounting hole, so that external dust and water vapor are not easy to enter the mounting tube, thereby reducing the impact of dust and water vapor on the mounting tube, which helps to ensure the heat dissipation effect of the mounting tube.

[0033] 3. When the air in the installation tube circulates, the fan blades can be driven to rotate, so that the connecting rod and the block rotate, and the block drives the expansion piece to rotate. The bulging expansion piece cleans the inner wall of the installation tube and removes the dust on the inner wall of the installation tube, thereby further reducing the dust attached to the installation tube; when the air in the expansion piece circulates, it can also take away part of the heat on the installation tube, thereby enhancing the heat dissipation effect of the installation tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0035] Figure 2 This is an exploded schematic diagram of Example 1 of the present application after the installation tube and its internal structure are hidden;

[0036] Figure 3 is a cross-sectional view of the mounting hole in Example 1 of the present application when it is closed;

[0037] Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle;

[0038] Figure 5 is a cross-sectional view of the mounting hole in Example 1 of the present application when it is opened;

[0039] Figure 6 is a schematic diagram of the structure of the skeleton in Example 2 of the present application;

[0040] Figure 7 is a cross-sectional view of the mounting hole in Example 3 of the present application when it is closed;

[0041] Figure 8 yes Figure 7 The enlarged schematic diagram of point B in the middle;

[0042] Fig. 9 yes Figure 7 The enlarged schematic diagram of the center C;

[0043] Fig.10 is a cross-sectional view of the mounting hole in Example 3 of the present application when it is opened;

[0044] Fig.11 yes Fig.10 The enlarged schematic diagram of point D in the middle;

[0045] Fig.12 yes Fig.10 Enlarged schematic diagram of point E in the middle.

[0046] : 1. core frame; 11. upper frame; 12. lower frame; 2. skeleton; 21. first frame; 211. slot; 22. second frame; 221. buckle; 23. separator; 231. glue dispensing slot; 24. mounting slot; 25. avoidance slot; 3. magnetic column; 4. ventilation hole; 5. mounting cylinder; 51. positioning ring; 6. blocking assembly; 61. partition; 611. mounting hole; 62. block; 621. rotating slot; 622. connecting hole; 63. elastic member; 64. connecting rod; 641. fan blade; 7. cleaning assembly; 71. support rod; 72. expansion member; 721. air inlet; 722. air outlet; 8. connecting pipe; 9. first wind shield ring; 10. second wind shield ring; 13. mounting frame; 131. perforation; 14. rotating block. DETAILED DESCRIPTION

[0047] The following combination Figure 1-Figure 12 This application is described in further detail.

[0048] Embodiment, the present application embodiment discloses a magnetic core assembly structure. Figure 1 and Figure 2The magnetic core assembly structure includes a magnetic core frame 1, a skeleton 2 and a magnetic column 3. The magnetic core frame 1 includes an upper frame 11 and a lower frame 12, and the upper frame 11 and the lower frame 12 are symmetrically arranged. The upper frame 11 and the lower frame 12 are fixed by glue. The skeleton 2 is made of plastic material, and the skeleton 2 is installed between the upper frame 11 and the lower frame 12; a separator 23 is arranged inside the skeleton 2, and a plurality of separators 23 are arranged and evenly spaced along the length direction of the skeleton 2. The separator 23 separates the inside of the skeleton 2 into a plurality of mounting grooves 24, and each mounting groove 24 is used to accommodate a magnetic column 3, and the magnetic column 3 is arranged in a cylindrical shape. Therefore, after each magnetic column 3 is installed in the corresponding installation groove 24, glue is applied to the inner side of the bottom of the lower frame 12 and the side where the upper frame 11 and the lower frame 12 are close to each other, and the lower frame 12 is installed into the bottom of the skeleton 2 to complete the bonding and fixation of the lower frame 12 and the skeleton 2; then the upper frame 11 is installed into the top of the skeleton 2 to complete the bonding and fixation between the upper frame 11 and the lower frame 12, thereby completing the rapid assembly of the magnetic core.

[0049] During assembly, a magnetic column 3 may be installed in each installation slot 24, or the magnetic column 3 may be installed in only a part of the installation slots 24 as required, so that the air gap width can be easily adjusted as required.

[0050] Each separator 23 in the frame 2 is provided with a glue dispensing groove 231, and the plurality of glue dispensing grooves 231 are located in the same straight line direction. After the magnetic column 3 is sequentially installed into the corresponding installation groove 24, the glue dispensing groove 231 is located on the outside of the magnetic column 3. At this time, glue is applied to the glue dispensing groove 231 to fix the magnetic column 3 on the frame 2, which can improve the stability of the magnetic column 3 after installation.

[0051] The top and bottom ends of the skeleton 2 are both provided with avoidance grooves 25 on the sides away from each other. Therefore, after the skeleton 2 is installed in the magnetic core frame 1, the avoidance grooves 25 can provide a certain avoidance space. Even if the magnetic column 3 expands due to heat later, it is not easy to cause a large squeeze on the magnetic core frame 1, thereby reducing the possibility of cracking of the magnetic core frame 1 and helping to ensure product quality.

[0052] The magnetic column 3 is coaxially provided with ventilation holes 4, and the upper frame 11, the lower frame 12 and the separator 23 are also provided with ventilation holes 4, and the apertures of the ventilation holes 4 are the same. After the magnetic column 3 is installed in the installation slot 24, a plurality of ventilation holes 4 are coaxially arranged, and the apertures of each ventilation hole 4 are the same. Therefore, when the fan located outside the magnetic core blows air, the air blown by the fan can flow in from the ventilation holes 4 on the upper frame 11, and then flow into the inside of the skeleton 2, taking away part of the heat on the magnetic column 3 and then being discharged through the ventilation holes 4 on the lower frame 12, thereby realizing air cooling and heat dissipation of the magnetic column 3.

[0053] Reference Figure 3, a mounting tube 5 is also passed through the ventilation hole 4, and the outer diameter of the mounting tube 5 is the same as the aperture of the ventilation hole 4. A positioning ring 51 is coaxially fixedly connected to one end of the mounting tube 5, and the positioning ring 51 is located in the avoidance groove 25 at the top of the skeleton 2, and the positioning ring 51 and the bottom wall of the avoidance groove 25 are fixed by glue, so that the mounting tube 5 can be quickly positioned. The mounting tube 5 is made of metal copper, so it has strong thermal conductivity. The heat on the magnetic column 3 can be conducted to the mounting tube 5, and then the air flowing inside the mounting tube 5 can take away the heat on the mounting tube 5, thereby achieving heat dissipation. The mounting tube 5 can also limit the magnetic column 3, which helps to ensure the concentricity of each magnetic column 3 after installation, thereby ensuring the assembly effect.

[0054] Reference Figure 3 and Figure 4 , a blocking assembly 6 is provided in the mounting tube 5, which is used to control the opening and closing of the mounting tube 5. The blocking assembly 6 includes a partition 61, a block 62, an elastic member 63 and a connecting rod 64. The partition 61 is fixedly connected to the inner wall of the mounting tube 5, and two partitions 61 are provided and are respectively located at the two ends of the mounting tube 5. Two blocks 62 are provided, and correspond to the two partitions 61 respectively. The connecting rod 64 is fixedly connected between the two blocks 62, and the end of the connecting rod 64 passes through the corresponding block 62. The inner walls of the two ends of the mounting tube 5 are fixedly connected with the mounting frame 13, and the middle part of the mounting frame 13 is provided with a through hole 131 for the connecting rod 64 to pass through, so that the two blocks 62 can slide synchronously. The stopper 62 is in a truncated cone shape, and a mounting hole 611 is provided on the partition 61. The shape of the mounting hole 611 matches the stopper 62, so when the stopper 62 slides to abut against the inner wall of the mounting hole 611, the stopper 62 blocks the mounting hole 611. The elastic member 63 is a spring, and the elastic member 63 is connected between the mounting frame 13 at the bottom end of the mounting tube 5 and the stopper 62. Under normal conditions, the elastic member 63 is in a compressed state, and the elastic member 63 makes the stopper 62 press against the inner wall of the mounting hole 611, blocking the mounting hole 611, and preventing dust and water vapor from entering.

[0055] Reference Figure 5 When the magnetic core works, it starts to generate heat. At this time, the external fan starts and blows air into the ventilation hole 4. The wind force can push the block 62 to slide, so that the block 62 slides out of the mounting hole 611. At this time, the mounting hole 611 is opened, so the wind blown by the fan can flow smoothly in the mounting tube 5, thereby achieving heat dissipation of the mounting tube 5.

[0056] In other embodiments, the elastic member 63 may also be an elastic rope, which is connected between the top wall of the block 62 at the bottom end of the mounting tube 5 and the inner wall of the mounting tube 5; under normal conditions, the elastic rope is at its original length, and the block 62 is located in the mounting hole 611; when the fan is started, the wind force can push the block 62 to slide downward, so that the block 62 slides out of the mounting hole 611, and the elastic rope is in a stretched state at this time; when the fan stops blowing, the elastic rope can make the block 62 slide upward into the mounting hole 611, thereby achieving blocking of the mounting tube 5.

[0057] The implementation principle of Example 1 is as follows: when the magnetic core is in a non-working state, the magnetic core does not generate heat, and the fan outside the magnetic core is in a non-working state. At this time, the block 62 is located in the mounting hole 611, closing the mounting hole 611, so that the two partitions 61 block the two ends of the mounting tube 5, and the dust and water vapor from the outside are not easy to enter the interior of the mounting tube 5, thereby avoiding adverse effects on the inner wall of the mounting tube 5 and the magnetic column 3. When the magnetic core is in a working state, the magnetic core generates heat, and the external fan is in a working state. The fan blows air into the ventilation hole 4, and the wind force pushes the block 62 to slide, so that the block 62 is located outside the mounting hole 611, and the mounting hole 611 is opened, so that the wind blown by the fan can flow smoothly in the mounting tube 5, and the heat of the magnetic column 3 will be transferred to the mounting tube 5, and the flowing wind can take away the heat on the mounting tube 5, thereby achieving heat dissipation of the magnetic column 3.

[0058] Example, see Figure 6 The difference between this embodiment and embodiment 1 is that the skeleton 2 in this embodiment includes a first frame 21 and a second frame 22, and a plurality of mounting grooves 24 are provided on the first frame 21 and the second frame 22. A card slot 211 is provided on the first frame 21, and a buckle 221 for inserting into the card slot 211 is provided on the second frame 22. Therefore, only the first frame 21 can be installed in the magnetic core frame 1, or the first frame 21 and the second frame 22 can be connected to each other and then installed in the magnetic core frame 1, so as to make a selection according to actual needs.

[0059] Example, see Figure 7 The difference between this embodiment and the first embodiment is that in this embodiment, a fan blade 641 is fixedly connected to the connecting rod 64, and a plurality of the fan blades 641 are arranged in a circular array. Therefore, the wind flowing in the mounting tube 5 can drive the fan blades 641 to rotate, so that the connecting rod 64 rotates.

[0060] Reference Figure 7 and Figure 8A rotation groove 621 is provided on the stopper 62 at the bottom end of the mounting tube 5, and a rotation block 14 is rotatably connected in the rotation groove 621. The elastic member 63 is fixedly connected between the bottom wall of the rotation block 14 and the top wall of the bottom mounting frame 13. Therefore, when the connecting rod 64 and the stopper 62 rotate, the elastic member 63 will not be driven to rotate, which helps to ensure the normal use of the elastic member 63.

[0061] Reference Figure 7 , Figure 8 and Fig. 9 A cleaning assembly 7 is also provided between the two blocks 62, and the cleaning assembly 7 includes a support rod 71 and an expansion member 72. The support rod 71 is fixedly connected between the two blocks 62; the expansion member 72 is a flexible strip-shaped bag body, and the two ends of the expansion member 72 are respectively fixedly connected to the two blocks 62; the expansion member 72 is sleeved on the outer side of the support rod 71. An air inlet 721 is provided at the top of the expansion member 72, and the top of the mounting tube 5 is the air inlet side, and a connecting hole 622 communicating with the air inlet 721 is provided on the block 62 on the air inlet side; an air outlet 722 is provided at the bottom of the expansion member 72, and the bottom of the mounting tube 5 is the air outlet side, and a connecting hole 622 communicating with the air outlet 722 is provided on the block 62 on the air outlet side. The air inlet 721 is larger than the air outlet 722, so when the external fan is started, the air intake of the expansion member 72 is larger than the air outlet, so that the expansion member 72 swells, and the outer wall of the expansion member 72 abuts against the inner wall of the installation tube 5. When the connecting rod 64 rotates, the stopper 62 is driven to rotate, and the stopper 62 drives the expansion member 72 to rotate, and the expansion member 72 wipes off the dust on the inner wall of the installation tube 5, thereby cleaning the inner wall of the installation tube 5. In other embodiments, the expansion member 72 can also be an air bag.

[0062] Furthermore, the support rod 71 is arranged in a spiral shape, so that the support rod 71 can limit the shape of the expansion member 72, so that the expansion member 72 is also spiral after swelling, which helps to increase the contact area between the expansion member 72 and the inner wall of the mounting tube 5, thereby enhancing the cleaning effect.

[0063] In addition, a connecting pipe 8 is fixedly connected to the stopper 62, one end of which is connected to the connecting hole 622, and the other end of which faces the outside of the stopper 62. A windshield is fixedly connected to the inner wall of the mounting tube 5, and the windshield includes a first windshield ring 9 and a second windshield ring 10. The first windshield ring 9 is located at the top end of the mounting tube 5, and the second windshield ring 10 is located at the bottom end of the mounting tube 5.

[0064] Reference Figure 7 , Figure 8 and Fig. 9When the magnetic core is in a non-working state, the first wind shield ring 9 abuts against the end of the connecting tube 8 on the top stopper 62, and the second wind shield ring 10 abuts against the end of the connecting tube 8 on the bottom stopper 62, so that the two connecting tubes 8 are in a closed state, and dust and other debris from the outside are not easy to enter the interior of the expansion member 72. Fig.10 , Fig.11 and Fig.12 When the magnetic core is in working state, the wind force pushes the block 62 downward, so that the connecting tube 8 on the top block 62 is out of contact with the first wind shield ring 9, and the connecting tube 8 on the bottom block 62 is out of contact with the second wind shield ring 10. At this time, both connecting tubes 8 are in an open state, so that air can flow into the expansion piece 72 and swell, thereby cleaning the inner wall of the mounting tube 5.

[0065] The implementation principle of Example 3 is as follows: when the magnetic core is in a non-operating state, the magnetic core does not generate heat, and the fan outside the magnetic core is in a non-operating state; at this time, the block 62 is located in the mounting hole 611, and dust and water vapor from the outside are not easy to enter the mounting tube 5, so the interior of the mounting tube 5 can be protected. Moreover, the opening of the connecting pipe 8 on the top block 62 is blocked by the first wind shielding ring 9, and the opening of the connecting pipe 8 on the bottom block 62 is blocked by the second wind shielding ring 10, so dust from the outside is not easy to enter the interior of the expansion member 72.

[0066] When the magnetic core is in working state, the magnetic core generates heat, and the external fan is in working state. At this time, the wind force pushes the block 62 downward, so that the block 62 is outside the mounting hole 611, and the wind in the mounting tube 5 can continue to circulate, thereby achieving heat dissipation. At the same time, since the block 62 moves downward, the connecting tube 8 can move downward, so after losing the shielding of the first wind shield ring 9 and the second wind shield ring 10, a part of the wind can flow into the expansion member 72 through the air inlet 721, and then be discharged through the air outlet 722. The air intake in the expansion member 72 is greater than the air outlet, so the expansion member 72 bulges, so that the expansion member 72 and the inner wall of the mounting tube 5 are against each other. The air flowing in the mounting tube 5 can make the fan blade 641 rotate, and the fan blade 641 drives the connecting rod 64 and the block 62 to rotate, and the block 62 drives the expansion member 72 to rotate, so that the expansion member 72 cleans the inner wall of the mounting tube 5, which can reduce the dust on the inner wall of the mounting tube 5 and help to ensure the heat dissipation effect. In addition, the air in the expansion member 72 can also exchange heat with the mounting tube 5 . The air flowing in the expansion member 72 absorbs part of the heat of the mounting tube 5 and then is discharged to the outside, which can further enhance the heat dissipation effect on the mounting tube 5 .

[0067] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A magnetic core assembly structure, characterized in that: include: Core frame (1); A skeleton (2) is arranged in the magnetic core frame (1), and a plurality of mounting grooves (24) are arranged on the skeleton (2); A plurality of magnetic columns (3) are provided, each of the magnetic columns (3) is located in one of the mounting grooves (24), and ventilation holes (4) are provided on the magnetic core frame (1), the skeleton (2) and the magnetic columns (3); An installation tube (5) is inserted into the ventilation hole (4), and the outer wall of the installation tube (5) abuts against the inner wall of the ventilation hole (4) on the frame (2) and the magnetic column (3) respectively; The blocking assembly (6) comprises a partition (61), a stopper (62), an elastic member (63) and a connecting rod (64), wherein two partitions (61) are provided and are respectively located at two ends of the mounting tube (5), two stoppers (62) are provided and correspond to the two partitions (61), and a mounting hole (611) is provided on the partition (61), the stopper (62) can slide relative to the mounting tube (5), and the connecting rod (64) is fixedly connected to the two stoppers (61). The elastic member (63) is connected between the stopper (62) and the mounting tube (5), and the elastic member (63) causes the stopper (62) to press against the inner wall of the corresponding mounting hole (611), so that when the magnetic core is in a non-working state, the stopper (62) blocks the corresponding mounting hole (611); when the magnetic core is in a working state, wind enters one end of the mounting tube (5), and the wind force pushes the stopper (62) and the connecting rod (64) to slide, so that the mounting hole (611) is opened.

2. A magnetic core assembly structure according to claim 1, characterized in that: The stopper (62) is in the shape of a truncated cone, and the inner wall of the mounting hole (611) is adapted to the truncated cone surface of the stopper (62).

3. A magnetic core assembly structure according to claim 1, characterized in that: One end of the installation tube (5) is fixedly connected to a positioning ring (51).

4. The magnetic core assembly structure according to claim 1, characterized in that: The frame (2) comprises a first frame body (21) and a second frame body (22), wherein the first frame body (21) and the second frame body (22) are both provided with a plurality of mounting grooves (24), and the first frame body (21) and the second frame body (22) are mutually clamped.

5. The magnetic core assembly structure according to claim 1, characterized in that: A plurality of glue dispensing grooves (231) are evenly spaced apart on the skeleton (2) along the arrangement direction of the magnetic columns (3).

6. The magnetic core assembly structure according to claim 1, characterized in that: Avoidance grooves (25) are provided at both ends of the frame (2).

7. The magnetic core assembly structure according to claim 1, characterized in that: The connecting rod (64) is fixedly connected to a fan blade (641), and a plurality of the fan blades (641) are provided and arranged in a circular array, so that when ventilation is performed in the installation tube (5), the wind force drives the fan blades (641) and the connecting rod (64) to rotate, and a cleaning component (7) is provided between the two stoppers (62), and the cleaning component (7) is used to abut against the inner wall of the installation tube (5), so that when the connecting rod (64) and the stopper (62) rotate, the cleaning component (7) is driven to rotate, thereby wiping off dust on the inner wall of the installation tube (5).

8. A magnetic core assembly structure according to claim 7, characterized in that: The cleaning assembly (7) comprises a support rod (71) and an expansion member (72); the support rod (71) is fixedly connected between two stoppers (62); the expansion member (72) is sleeved on the outside of the support rod (71); the expansion member (72) is in the shape of an elongated strip and is arranged along the length direction of the support rod (71); two ends of the expansion member (72) are respectively fixedly connected to the two stoppers (62); an air inlet (721) is arranged at one end of the expansion member (72) close to the air inlet side of the mounting tube (5); an air outlet (722) is arranged at one end of the expansion member (72) close to the air outlet side of the mounting tube (5); the area of ​​the air inlet (721) is larger than the area of ​​the air outlet (722), so that when ventilation is carried out in the mounting tube (5), the expansion member (72) bulges and the outer wall of the expansion member (72) abuts against the inner wall of the mounting tube (5).

9. A magnetic core assembly structure according to claim 8, characterized in that: The support rod (71) is arranged in a spiral shape.

10. The magnetic core assembly structure according to claim 8, characterized in that: Each of the stoppers (62) is provided with a connecting pipe (8) that is in communication with the interior of the expansion member (72); a windshield is fixedly connected to the mounting tube (5); when the stopper (62) is located in the mounting hole (611), the windshield blocks the end of the connecting pipe (8); when the stopper (62) is located outside the mounting hole (611), the windshield is located outside the end of the connecting pipe (8), and the end of the connecting pipe (8) is in an open state.

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