A framework for a transformer

Abstract

The utility model provides a framework for transformer, including the main part of tubular structure, the inner wall of main part is equipped with the convex stripe, the convex stripe is equipped with at least three along the circumferential direction of main part interval even distribution, forms the heat dissipation channel between adjacent convex stripe, the outer wall of main part is equipped with the convex ring, the convex ring is set up along the radial convex of main part, is equipped with the wire slot on the convex ring, the outer wall of main part still is equipped with the slot of sticking together, the slot of sticking together is set up along the axial spiral of main part. Compared with prior art, the utility model has the advantages of simple structure, convenient heat dissipation and even wire arrangement, effectively avoids the eddy current loss caused by the magnetic force line leakage of air gap position, avoids heat accumulation, and can effectively control the difference of leakage inductance.

Description

Technical Field

[0001] This utility model relates to the technical field of transformers, and in particular to a frame for a transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage, making it very convenient in voltage conversion scenarios. The frame is an important component of a transformer, which requires the insertion of a magnetic core inside and the winding of coils on the outside.

[0003] In existing technologies, the structure of the transformer core has significant limitations, especially in terms of heat dissipation. The magnetic core is tightly nested within the core, and the windings are tightly wound around the core, resulting in small gaps between components, which hinders ventilation and leads to insufficient heat dissipation. Furthermore, air gaps in the magnetic core can cause magnetic flux leakage, resulting in significant eddy current losses and further increasing the overall transformer temperature. Moreover, transformer windings are often made of multi-strand wires, but during wiring, there are always issues with large gaps between the wires and inconsistent wiring, leading to severe leakage inductance and consequently affecting transformer performance. Therefore, it is urgent to solve these problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model achieves the above objectives through the following technical solution: a frame for a transformer, comprising a cylindrical main body, the inner wall of the main body being provided with protruding strips, at least three of which are evenly distributed along the circumferential direction of the main body, and a heat dissipation channel is formed between adjacent protruding strips; The outer wall of the main body is provided with a protruding ring, which protrudes radially along the main body and has a wire groove. The outer wall of the main body is also provided with a fitting groove, which is spirally arranged along the axial direction of the main body.

[0005] Furthermore, each end of the main body is provided with a limiting plate, which extends radially along the main body; this allows the wound wire to be confined to the outer wall of the main body and between the limiting plates, facilitating the winding of the wire layer by layer, making the wiring more uniform and tight, reducing leakage inductance, and ensuring the performance of the transformer.

[0006] Furthermore, the limiting plate is provided with a connecting block, and a copper sleeve is fixed on the connecting block. The copper sleeve is used for the end of the wire to be inserted and mated. Under the action of the copper sleeve, the end of the wire can be kept firmly connected, which can effectively avoid vibration failure caused by the soldering process.

[0007] Furthermore, the limiting plate is provided with a positioning edge that extends along the axial direction of the main body; under the action of the positioning edge, the magnetic core can be easily engaged here, making the connection more reliable and the structure more compact.

[0008] Furthermore, reinforcing ribs are provided between the connecting block and the positioning edge; this effectively ensures structural strength and extends service life.

[0009] Furthermore, the width of the convex ring is greater than or equal to 4 mm, and the thickness of the convex ring protruding relative to the outer wall of the main body is greater than or equal to 1.5 mm.

[0010] Furthermore, the bonding groove is U-shaped; under the action of the bonding groove, the wire can be effectively guided to wind along the preset gap, so that the wire is more tightly bonded, the consistency of the wiring is higher, and the difference in leakage inductance is effectively controlled.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: First, by setting convex strips on the inner wall of the main body, at least three convex strips are evenly distributed along the circumference of the main body, and heat dissipation channels are formed between adjacent convex strips, which is conducive to ventilation, thereby improving heat dissipation capacity and avoiding heat accumulation. Secondly, by providing a convex ring on the outer wall of the main body, the convex ring is arranged to protrude radially along the main body. In practice, by setting the convex ring relative to the air gap of the magnetic core, the wire can effectively avoid eddy current losses caused by magnetic line leakage at the air gap position, thereby avoiding winding heating and further preventing heat accumulation. Third, by spirally setting a fitting groove on the outer wall of the main body, the wire can be effectively guided to wind along the preset gap, making the wire fit more tightly, improving the consistency of the wiring, effectively controlling the difference in leakage inductance, and thus effectively solving the technical problem in this field. Overall, this invention has the advantages of simple structure, convenient heat dissipation and uniform wiring, effectively avoids eddy current loss caused by magnetic line leakage at the air gap, avoids heat accumulation, and can effectively control the difference in leakage inductance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a schematic diagram of the structure of this utility model applied to a transformer.

[0013] The reference numerals in the attached drawings are explained as follows: 10-Main body; 101-Protruding strip; 102-Protruding ring; 103-Wire groove; 104-Fitting groove; 105-Limiting plate; 106-Connecting block; 107-Positioning edge; 108-Reinforcing rib; 109-Hollowed groove; 20-Heat dissipation channel; 30-Copper sleeve; 40-Magnetic core; 50-Winding. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The embodiments in this specification are described in a progressive manner; similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. Furthermore, the division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this application. The embodiments can be combined with and referenced by each other without contradiction.

[0015] It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0016] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0017] like Figures 1 to 4 As shown, a frame for a transformer includes a cylindrical body 10. The inner wall of the body 10 is provided with protrusions 101. At least three protrusions 101 are evenly distributed along the circumferential direction of the body 10, and a heat dissipation channel 20 is formed between adjacent protrusions 101. In this embodiment, six protrusions 101 are preferably provided, which can ensure sufficient heat dissipation space while also having sufficient structural strength. The outer wall of the main body 10 is provided with a protruding ring 102. The protruding ring 102 is arranged to protrude radially along the main body 10. A wire groove 103 is provided on the protruding ring 102. The opening direction of the wire groove 103 is inclined to the radial protrusion direction of the protruding ring 102, which makes it easier for the wire to pass through and facilitates the wire to be wound in the correct direction. The outer wall of the main body 10 is also provided with a fitting groove 104, which is spirally arranged along the axial direction of the main body 10 and is U-shaped. Under the guidance and restriction of the fitting groove 104, the wire can be wound along the preset gap to conform to the wiring interval, effectively control the consistency of the wiring and effectively control the difference in leakage inductance.

[0018] Both ends of the main body 10 are provided with limiting plates 105, which extend radially along the main body 10.

[0019] The limiting plate 105 is provided with a connecting block 106, and a copper sleeve 30 is fixed on the connecting block 106. The copper sleeve 30 is used for the end connection of the wire. Specifically, the connecting block 106 has an opening groove, and the copper sleeve 30 can be directly snapped into the opening groove. Fixing adhesive is applied to the opening groove to securely fix the copper sleeve 30 to the connecting block 106. Several hollow grooves 109 are opened on the connecting block 106, which can reduce weight, save materials, and reduce costs while ensuring the overall structural strength.

[0020] The limiting plate 105 has a protruding positioning edge 107, which extends along the axial direction of the main body 10. A reinforcing rib 108 is provided between the connecting block 106 and the positioning edge 107.

[0021] The width of the raised ring 102 is greater than or equal to 4 mm, and the thickness of the raised ring 102 protruding relative to the outer wall of the main body 10 is greater than or equal to 1.5 mm. For details, please refer to... Figure 2 As shown, A represents the width of the convex ring 102, and B represents the thickness of the convex ring 102; in some embodiments, the width of the convex ring 102 is equal to 4 mm, and the thickness of the convex ring 102 is equal to 1.9 mm.

[0022] Specifically, in practical applications, the corresponding transformer includes the frame of this utility model, as well as a magnetic core 40 and a winding 50. The magnetic core 40 is preferably of type PQ. The central column of the magnetic core 40 is inserted into the main body 10, and the outer wall of the central column abuts against the protrusion 101. The air gap is located in the middle of the central column, and the protruding ring 102 is set opposite to the air gap. The outer end of the magnetic core 40 is engaged in the space enclosed by the positioning edge 107. The conductor of the winding 50 is preferably film-coated wire and / or triple-insulated wire. Under the guidance of the fitting groove 104, the conductor of the winding 50 can be wound along the preset gap. Finally, the end of the conductor is inserted into the copper sleeve 30 and resistance soldered. This can reliably connect the end of the conductor to the copper sleeve 30 without loosening or detachment, effectively avoiding vibration failure caused by the soldering process.

[0023] In summary, the technical solution of this utility model can fully and effectively achieve the aforementioned objectives. Furthermore, the structure and functional principles of this utility model have been fully verified in the embodiments, achieving the expected effects and objectives. Without departing from the principles and essence of this utility model, various changes or modifications can be made to the embodiments. Therefore, this utility model includes all substitutions within the scope mentioned in the patent application claims, and any equivalent changes made within the scope of this patent application are within the scope of the patent application.

Claims

1. A frame for a transformer, comprising a cylindrical body (10), characterized in that: The inner wall of the main body (10) is provided with protrusions (101), and at least three protrusions (101) are evenly distributed along the circumferential direction of the main body (10), and heat dissipation channels (20) are formed between adjacent protrusions (101). The outer wall of the main body (10) is provided with a protruding ring (102), the protruding ring (102) is arranged to protrude along the radial direction of the main body (10), and a wire groove (103) is formed on the protruding ring (102). The outer wall of the main body (10) is also provided with a fitting groove (104), which is spirally arranged along the axial direction of the main body (10).

2. The frame for a transformer according to claim 1, characterized in that: Both ends of the main body (10) are provided with limiting plates (105), which extend radially along the main body (10).

3. A frame for a transformer according to claim 2, characterized in that: The limiting plate (105) is provided with a connecting block (106), and a copper sleeve (30) is fixed on the connecting block (106). The copper sleeve (30) is used for the end of the wire to be inserted and connected.

4. A frame for a transformer according to claim 3, characterized in that: The limiting plate (105) is provided with a positioning edge (107), which extends along the axial direction of the main body (10).

5. A frame for a transformer according to claim 4, characterized in that: A reinforcing rib (108) is provided between the connecting block (106) and the positioning edge (107).

6. A frame for a transformer according to claim 1, characterized in that: The width of the convex ring (102) is greater than or equal to 4 mm, and the thickness of the convex ring (102) protruding relative to the outer wall of the main body (10) is greater than or equal to 1.5 mm.

7. A frame for a transformer according to claim 1, characterized in that: The fitting groove (104) is U-shaped.

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