Transformer beneficial to efficient heat dissipation

Abstract

The transformer comprises an inner frame, an outer frame and a base, the inner frame is symmetrically sleeved with the outer frame, the base is connected to the bottom of the outer frame, the inner frame comprises an outer iron core, the interior of the outer iron core is hollow, and an inner coil and an outer coil are wound around the exterior of the outer iron core; an inner iron core and a driving mechanism for driving the inner iron core to slide are arranged in the outer frame, the inner iron core is inserted into the outer iron core, and the driving mechanism is used for driving the inner iron core to move in the axis direction. Compared with the prior art, in the use process, the air gap of the inner iron core can be flexibly adjusted through temperature change, so that temperature rise of the transformer is limited, internal heat can be rapidly discharged through the air inlet and the air outlet during temperature rise, and the heat dissipation effect of the transformer is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic transformers, and in particular to a transformer that is conducive to efficient heat dissipation. Background Art

[0002] An electronic transformer, also known as an electronic power transformer, is a new type of transformer that uses power electronics technology to achieve energy transfer and power conversion. Based on the analysis and summary of existing power electronic transformer topologies, a power electronic transformer can be defined as follows: An electronic transformer is a static electrical device that combines power electronic conversion technology with high-frequency power conversion technology based on the principle of electromagnetic induction to convert electrical energy with one electrical characteristic into electrical energy with another.

[0003] Traditional transformers mostly use a one-piece structure for the casing and core, making disassembly and assembly inconvenient. Furthermore, transformers are prone to overheating under prolonged high loads, leading to increased heat generation and overheating. This affects the transformer's electromagnetic efficiency and, in severe cases, can even cause damage.

[0004] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Summary of the Invention

[0005] The main purpose of the present invention is to provide a transformer that is conducive to efficient heat dissipation, has a simple structure, is easy to disassemble and assemble, and has a better heat dissipation effect.

[0006] In order to achieve the above object, the solution of the present invention is: A transformer with efficient heat dissipation includes an inner frame, an outer frame, and a base. The outer frame is symmetrically fitted outside the inner frame, and the base is connected to the bottom of the outer frame. The inner frame includes an outer iron core, which is hollow inside. An inner coil and an outer coil are wound around the outside of the outer iron core. The outer frame contains the inner iron core and a driving mechanism for driving the inner iron core to slide. The inner iron core is inserted into the outer iron core, and the driving mechanism is used to drive the inner iron core to move along the axial direction.

[0007] Furthermore, the outer frame includes a main frame and side frames symmetrically arranged on both sides of the main frame. The main frame has a drive cavity inside, and the drive cavity has an opening on the side wall of the main frame. The inner iron core is slidably connected to the opening, and a limiting block is provided on the end of the inner iron core that extends into the drive cavity.

[0008] Furthermore, the driving mechanism includes a heat-conducting block and a temperature-sensitive elastic member. The heat-conducting block is arranged on the side wall of the limiting block, and the two ends of the temperature-sensitive elastic member are fixedly connected to the heat-conducting block and the side wall of the driving cavity respectively.

[0009] Furthermore, the side frame is provided with a guide groove inside, and the guide groove has an air inlet on the inner wall of the side frame and an air outlet on the upper surface of the side frame.

[0010] Furthermore, the limiting block is provided with sealing blocks at both ends, and the sealing blocks are slidably connected to the guide groove, thereby sealing the air inlet and air outlet.

[0011] Furthermore, a limiting column is provided inside the driving cavity.

[0012] Furthermore, a clearance groove is provided at the lower end of the inner frame, and a terminal block is provided on the clearance groove.

[0013] Furthermore, the base is provided with through holes for the terminals to pass through. Furthermore, the lower end of the outer frame is provided with a claw, and the base is provided with several locking holes, the claw and the locking holes being interlocked.

[0014] With the above structure, during operation, when the transformer overheats, the temperature-sensing elastic element pulls the inner iron cores apart, increasing the air gap between them. This increased air gap increases the magnetic resistance between the iron cores, preventing further temperature rise. Furthermore, the movement of the limiting block moves the sealing block, connecting the air inlet and outlet, allowing hot air inside the transformer to be quickly expelled, accelerating heat dissipation. Subsequently, when the temperature decreases, the temperature-sensing elastic element pushes the inner iron cores closer together, reducing the air gap between them.

[0015] Compared with the prior art, the beneficial effects of this invention are that it can flexibly adjust the air gap of the inner core by changing the temperature during use, thereby limiting the temperature rise of the transformer. Furthermore, when the temperature rises, the internal heat can be quickly discharged through the air inlet and outlet, further improving the heat dissipation effect of the transformer. Attached Figure Description

[0016] Figure 1 It is a three-dimensional diagram of the external structure of the present invention.

[0017] Figure 2 It is a side view of the cross-sectional structure of the present invention.

[0018] Figure 3 It is a top view of the cross-sectional structure of the present invention.

[0019] Figure 4 This is a three-dimensional view of the external structure of the inner frame.

[0020] Figure 5 This is a three-dimensional view of the outer frame structure.

[0021] Figure 6This is a three-dimensional view of the base's external structure.

[0022] In the diagram: Inner frame 1, outer iron core 11, outer frame 2, main frame 21, side frame 22, clearance groove 23, terminal block 24, drive cavity 25, limit post 251, opening 26, guide groove 27, air inlet 271, air outlet 272, claw 28, base 3, locking hole 31, inner coil 41, outer coil 42, inner iron core 5, limit block 51, sealing block 52, heat-conducting block 61, temperature-sensing elastic element 62. DETAILED DESCRIPTION

[0023] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0024] like Figure 1-6 As shown, a transformer with efficient heat dissipation includes an inner frame 1, an outer frame 2, and a base 3. The outer frames 2 are symmetrically fitted around the inner frame 1, and the two outer frames 2 are fastened together by screws. The base 3 is connected to the bottom of the outer frame 2. The inner frame 1 includes an outer iron core 11, which is hollow inside. An inner coil 41 is wound around the outside of the outer iron core 11, and an outer coil 42 is wound around the inside of the inner coil 41. Insulating tape is wound between each layer of coils. The outer frame 2 contains an inner iron core 5 and a driving mechanism for sliding the inner iron core 5. The inner iron core 5 is inserted into the outer iron core 11, and the driving mechanism is used to drive the inner iron core 5 to move along the axial direction.

[0025] Specifically, the outer frame 2 is in a "C" - shaped structure. The outer frame 2 includes a main frame body 21 and side frame bodies 22 symmetrically arranged on both sides of the main frame body 21. A让位槽23 (let - through slot) is provided at the lower end of the inner frame 1, and a terminal 24 is provided on the let - through slot 23. The terminal 24 on both sides is respectively connected to the inner coil 41 and the outer coil 42. The let - through slot 23 can provide space for the wire. A through - hole for the terminal 24 to pass through is provided on the base 3. A driving cavity 25 is provided inside the main frame body 21, and an opening 26 is provided on the side wall of the main frame body 21 for the driving cavity 25. The inner iron core 5 is slidably connected to the opening 26. A limiting block 51 is provided at the end of the inner iron core 5 extending into the driving cavity 25. The limiting block 51 can play a role in limiting and guiding the sliding. And limiting columns 251 are provided on the upper and lower side walls of the driving cavity 25. The limiting columns 251 can limit the translation of the limiting block 51, so that the air gap between the two inner iron cores 5 is maintained between 0.25 mm and 2 mm. In this embodiment, the driving mechanism includes a heat - conducting block 61 and a temperature - sensitive elastic member 62. The limiting block 51 is made of a heat - conducting material. The heat - conducting block 61 is provided on the side wall of the limiting block 51. The two ends of the temperature - sensitive elastic member 62 are respectively fixedly connected to the heat - conducting block 61 and the side wall of the driving cavity 25. The temperature - sensitive elastic member 62 can specifically be a shape - memory alloy spring. In this way, when the temperature rises, the temperature - sensitive elastic member 62 can contract, thereby pulling the limiting block 51 and the inner iron core 5 to move outward. At this time, the air gap between the inner iron cores 5 can be increased, thereby increasing the magnetic resistance and preventing the transformer from continuing to heat up. When the transformer dissipates heat, the temperature - sensitive elastic member 62 returns to its original shape and extends, pushing the limiting block 51 and the inner iron core 5 inward. At this time, the air gap between the inner iron cores 5 decreases, improving the electromagnetic efficiency of the transformer. In this way, the air gap of the transformer can be flexibly and autonomously adjusted, preventing the transformer from overheating rapidly and improving the electromagnetic efficiency of the transformer.

[0026] Specifically, a guide chute 27 is provided inside the side frame body 22. An air inlet hole 271 is provided on the inner side wall of the side frame body 22 for the guide chute 27, and an air outlet hole 272 is provided on the upper surface of the side frame body 22 for the guide chute 27. Sealing blocks 52 are provided at both ends of the limiting block 51. The sealing blocks 52 are slidably connected to the guide chute 27, and the sealing blocks 52 block the air inlet hole 271 and the air outlet hole 272. After adopting the above - mentioned structure, when the transformer heats up, when the limiting block 51 moves outward, it带动 (leads) the sealing block 52 to move outward together, so that the air inlet hole 271 and the air outlet hole 272 are connected to each other. In this way, the hot air inside the transformer can be discharged from the inside of the transformer more quickly through the air inlet hole 271 and the air outlet hole 272, further improving the heat - dissipation efficiency of the transformer.

[0027] Specifically, to facilitate transformer assembly, the lower end of the outer frame 2 is provided with claws 28, and the base 3 is provided with several locking holes 31. The claws 28 and locking holes 31 are interlocked. With the above structure, the outer frame 2 is first assembled on both sides of the inner frame 1, and then the outer frame 2 is locked together with screws. Then, the base 3 is snapped together with the lower end of the outer frame 2. Finally, insulating tape is wrapped around the outside of the outer frame 2 to complete the transformer assembly, making the transformer assembly and disassembly of the present invention more convenient and quick.

[0028] With the above structure, during use, when the transformer overheats, the temperature-sensing elastic element 62 pulls the inner iron cores 5 apart, increasing the air gap between them. This increased air gap increases the magnetic resistance between the iron cores, preventing further temperature rise. Furthermore, the movement of the limiting block 51 moves the sealing block 52, connecting the air inlet 271 and the air outlet 272, allowing hot air inside the transformer to be quickly expelled through these openings, accelerating heat dissipation. When the temperature decreases, the temperature-sensing elastic element 62 pushes the inner iron cores 5 closer together, further reducing the air gap between them.

[0029] Compared with the prior art, the beneficial effect of this invention is that it can flexibly adjust the air gap of the inner iron core 5 by temperature changes during use, thereby limiting the temperature rise of the transformer. Furthermore, when the temperature rises, the internal heat can be quickly discharged through the air inlet 271 and the air outlet 272, further improving the heat dissipation effect of the transformer.

[0030] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A transformer that is conducive to efficient heat dissipation, characterized in that: It includes an inner frame, an outer frame and a base. The outer frame is symmetrically sleeved outside the inner frame. The base is connected to the bottom of the outer frame. The inner frame includes an outer iron core. The outer iron core is hollow inside. An inner coil and an outer coil are wound around the outside of the outer iron core. The inner iron core and a driving mechanism for driving the inner iron core to slide are arranged inside the outer frame. The inner iron core is inserted into the outer iron core. The driving mechanism is used to drive the inner iron core to move along the axial direction.

2. A transformer that is conducive to efficient heat dissipation as claimed in claim 1, characterized in that: The outer frame includes a main frame body and side frames symmetrically arranged on both sides of the main frame body. A driving cavity is arranged inside the main frame body. The driving cavity has an opening on the side wall of the main frame body. The inner iron core is slidably connected to the opening. A limit block is arranged on the end of the inner iron core extending into the driving cavity.

3. A transformer that is conducive to efficient heat dissipation as claimed in claim 2, characterized in that: The driving mechanism comprises a heat-conducting block and a temperature-sensitive elastic member. The heat-conducting block is arranged on the side wall of the limiting block. Two ends of the temperature-sensitive elastic member are respectively fixedly connected to the heat-conducting block and the side wall of the driving cavity.

4. A transformer that is conducive to efficient heat dissipation as claimed in claim 3, characterized in that: A guide slide groove is arranged inside the side frame body, an air inlet hole is arranged on the inner side wall of the side frame body, and an air outlet hole is arranged on the upper surface of the side frame body.

5. A transformer that is conducive to efficient heat dissipation as claimed in claim 4, characterized in that: Both ends of the limit block are provided with blocking blocks, the blocking blocks are slidably connected with the guide groove, and the blocking blocks block the air inlet and the air outlet.

6. A transformer that is conducive to efficient heat dissipation as claimed in claim 5, characterized in that: A limiting column is arranged inside the driving cavity.

7. A transformer that is conducive to efficient heat dissipation as claimed in claim 6, characterized in that: A clearance groove is provided at the lower end of the inner frame, and a terminal post is provided on the clearance groove.

8. A transformer that is conducive to efficient heat dissipation as claimed in claim 7, characterized in that: The base is provided with a through hole for the terminal to pass through.

9. A transformer that is conducive to efficient heat dissipation as claimed in claim 8, characterized in that: A clamping claw is arranged at the lower end of the outer frame, and a plurality of clamping holes are arranged on the base, and the clamping claw and the clamping holes are mutually buckled and connected.

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