A heat dissipation fin foldable power transformer
By designing a foldable heat dissipation fin structure, the problems of large size and high transportation cost of traditional transformers are solved, and flexible heat dissipation control and stable equipment operation are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HONGQIAO ELECTRONICS CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional transformers have non-foldable heat dissipation fins, resulting in a large overall size, which increases the demand for transportation and storage space, raises logistics costs, and reduces space utilization.
A power transformer with foldable heat dissipation fins was designed. By installing heat sinks in slots on both sides of the transformer body, the fins can be folded and unfolded using a rotation and telescopic structure. The transformer includes first and second heat dissipation fins made of aluminum alloy, and the heat dissipation area can be flexibly adjusted by combining linkage components and sliding guide rails.
The device significantly reduces its size when not in operation, lowering transportation and storage costs. Meanwhile, when in operation, it ensures temperature stability and operational reliability by flexibly adjusting the heat dissipation area.
Smart Images
Figure CN224304489U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power transformer technology, and more specifically, it relates to a power transformer with foldable heat dissipation fins. Background Technology
[0002] Power transformers are widely used in power systems and other fields to reduce line losses and improve transmission efficiency by stepping up voltage, while also ensuring electrical safety through isolation. Their accompanying heat dissipation fins increase the contact area with air, accelerating heat dissipation, controlling operating temperature, preventing insulation aging and faults, and ensuring safe and stable equipment operation. However, traditional transformers typically have fixed, extended heat dissipation fins that cannot be folded for storage. This results in a larger overall transformer size, requiring more packaging space and transportation vehicles during transport, increasing logistics costs; it also occupies more storage space, leading to lower space utilization. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model provides a power transformer with foldable heat dissipation fins. This solves the technical problems in the prior art where the heat dissipation fins of traditional transformers are mostly fixed and cannot be folded for storage, resulting in a large overall size, requiring larger packaging and tools for transportation, increasing logistics costs, occupying more storage space, and having low utilization rates.
[0004] The purpose and effect of this utility model of a power transformer with foldable heat dissipation fins are achieved by the following specific technical means:
[0005] A power transformer with foldable heat dissipation fins includes a transformer body and a heat sink. The transformer body has mounting slots on both sides, and the heat sink passes through the mounting slots and is fixed with screws. The heat sink includes a heat-conducting plate disposed within the mounting slots. Two sets of positioning plates are arranged opposite each other on the side of the heat-conducting plate away from the transformer body, and multiple sets of positioning mounting holes are formed through each set of positioning mounting holes. A first heat dissipation fin is disposed between every two sets of positioning mounting holes, and a mounting post is provided at the top of each first heat dissipation fin. The first heat dissipation fin is rotatably disposed within the positioning mounting hole via the two sets of mounting posts. A mounting cavity is also formed within the first heat dissipation fin, and a second heat dissipation fin can be retractably disposed within the mounting cavity.
[0006] The above technical solution further includes that a contact groove is provided on the heat-conducting plate between the two sets of positioning plates, and one side of the first heat dissipation fin is in contact with the contact groove.
[0007] The above technical solution further includes that two sets of first linkage members are staggered on both sides of the multiple sets of first heat dissipation fins, and a telescopic connecting rod is provided between each pair of adjacent first heat dissipation fins, with the two ends of the telescopic connecting rod passing through the two sets of adjacent first linkage members respectively.
[0008] The above technical solution further includes that the two ends of the first heat dissipation fin are provided with sliding guide rails through the mounting cavity, and the two ends of the second heat dissipation fin are provided with sliding blocks corresponding to the two sets of sliding guide rails. The second heat dissipation fin is slidably disposed in the sliding guide rails through the two sets of sliding blocks.
[0009] The above technical solution further includes that a positioning mounting component is provided on the side of the positioning plate away from the heat-conducting plate corresponding to the second heat dissipation fin, and one end of the second linkage component is rotatably inserted into the positioning mounting component and locked by a limiting nut.
[0010] The above technical solution further includes that the top end of the second heat dissipation fin is provided with a linkage hole, and the other end of the second linkage component passes through the linkage hole.
[0011] The above technical solution further includes that both the first heat dissipation fin and the second heat dissipation fin are made of aluminum alloy.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. Mounting slots are provided on both sides of the transformer body to fix the heat sink, and the heat-conducting plate of the heat sink is installed in the mounting slot. The first heat sink fin rotates by engaging with the positioning mounting holes on the positioning plate via a mounting post, and the second heat sink fin can extend and retract within the mounting cavity of the first heat sink fin. In the transportation and storage state, the first heat sink fin is rotated and folded around the mounting post to fit against the heat-conducting plate, and the second heat sink fin retracts into the mounting cavity of the first heat sink fin along the sliding guide rail, significantly reducing the overall size of the transformer. This reduces the amount of packaging material used, allows for smaller transport vehicles, reduces warehouse space occupation, lowers logistics costs, and improves the utilization rate of enterprise warehouse space.
[0014] 2. During transformer operation, the first heat dissipation fins rotate and unfold around the mounting column, increasing the contact area with air. Simultaneously, the second heat dissipation fins extend along the sliding guide rails of the first heat dissipation fins via sliding blocks at both ends, further expanding the heat dissipation surface area. Multiple sets of first heat dissipation fins are linked together via telescopic connecting rods, allowing for synchronized adjustment of their rotation angles. One end of the second heat dissipation fin is rotatably mounted to the positioning mounting component via a second linkage and secured by a limit nut; the other end is inserted into the linkage hole, and its extension length is adjusted according to the angle of the first heat dissipation fins. By adjusting the unfolded state and extension length of the first and second heat dissipation fins, precise control of heat dissipation efficiency is achieved, ensuring stable transformer operating temperature and guaranteeing equipment reliability. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the assembled structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the assembled structure of the radiator of this utility model.
[0017] Figure 3 yes Figure 2 A magnified structural diagram of region a in the middle.
[0018] Figure 4 This is an exploded structural diagram of the first heat dissipation fin of this utility model.
[0019] Figure 5 This is a schematic diagram of the structure of the heat-conducting plate of this utility model.
[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0021] 1. Transformer body; 2. Radiator; 3. First heat dissipation fin; 4. Second heat dissipation fin; 101. Heat-conducting plate; 102. Positioning plate; 103. Positioning mounting hole; 104. Mounting cavity; 201. Contact groove; 301. First linkage component; 302. Telescopic connecting rod; 401. Sliding guide rail; 402. Sliding block; 501. Positioning mounting component; 502. Second linkage component; 601. Linkage hole. Detailed Implementation
[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.
[0023] Example:
[0024] like Figures 1 to 5As shown, this utility model provides a power transformer with foldable heat dissipation fins, including a transformer body 1 and a heat sink 2. Mounting slots are provided on both sides of the transformer body 1, and the heat sink 2 is inserted into the mounting slots and fixed with screws. The heat sink 2 includes a heat-conducting plate 101, which is disposed in the mounting slot. Two sets of positioning plates 102 are arranged opposite each other on the side of the heat-conducting plate 101 away from the transformer body 1, and multiple sets of positioning mounting holes 103 are provided through each set of positioning mounting holes 103. A first heat dissipation fin 3 is provided between every two sets of positioning mounting holes 103, and a mounting post is provided at the top of each first heat dissipation fin 3. The first heat dissipation fin 3 is rotatably mounted in the positioning mounting hole 103 via the two sets of mounting posts. A mounting cavity 104 is also provided in the first heat dissipation fin 3, and a second heat dissipation fin 4 is retractably disposed in the mounting cavity 104. The mounting slots on both sides of the transformer body 1 are used to fix the heat sink 2, and the heat-conducting plate 101 of the heat sink 2 is embedded in the mounting slot and connected with screws to ensure stability. The first heat dissipation fin 3 engages with the positioning mounting hole 103 of the positioning plate 102 via a top mounting post, enabling it to rotate around an axis. It can be unfolded during use and folded during transportation and storage. An mounting cavity 104 is formed within the first heat dissipation fin 3, allowing the second heat dissipation fin 4 to extend and retract within the mounting cavity 104, further reducing the overall volume. This design significantly reduces the space occupied by the transformer when not in operation, lowering packaging, transportation, and storage costs.
[0025] When the transformer body 1 is operating, the first heat dissipation fin 3 unfolds to increase the contact area with air, and the second heat dissipation fin 4 extends from the mounting cavity 104 to further expand the heat dissipation surface area. By adjusting the rotation angle of the first heat dissipation fin 3 and the extension length of the second heat dissipation fin 4, the heat dissipation area can be adjusted according to the actual operating temperature of the transformer, achieving dynamic control of heat dissipation efficiency. The heat conduction plate 101 conducts heat from the transformer body 1 to the two sets of heat dissipation fins, and heat is quickly dissipated through air convection, maintaining a stable operating temperature of the transformer and extending the service life of the equipment.
[0026] Both the first heat dissipation fin 3 and the second heat dissipation fin 4 are made of aluminum alloy. Aluminum alloy has a high thermal conductivity, allowing heat to dissipate rapidly after being conducted to the fins. During the rotation of the first heat dissipation fin 3 within the positioning mounting hole 103 via the mounting post, and the expansion and contraction of the second heat dissipation fin 4 within the mounting cavity 104, the aluminum alloy material exhibits good plasticity and toughness, making it less prone to deformation and damage due to bending and expansion. Furthermore, aluminum alloy has a low density, which, compared to other metal materials, reduces the overall weight of the transformer for the same heat dissipation area, facilitating transportation and installation. At the same time, an oxide film easily forms on the surface of aluminum alloy, providing strong corrosion resistance and adapting to various operating environments, thus reducing the problem of decreased heat dissipation performance caused by corrosion of the fins.
[0027] like Figures 1 to 5As shown, a contact groove 201 is also provided on the heat-conducting plate 101 between the two sets of positioning plates 102, and one side of the first heat dissipation fin 3 contacts the contact groove 201. Two sets of first linkage members 301 are staggered on both sides of the multiple sets of first heat dissipation fins 3, and a telescopic connecting rod 302 is provided between each pair of adjacent first heat dissipation fins 3. The two ends of the telescopic connecting rod 302 are respectively inserted into the two sets of adjacent first linkage members 301. The contact groove 201 is provided on the heat-conducting plate 101, and one side of the first heat dissipation fin 3 contacts it, shortening the heat conduction path and allowing the heat generated by the transformer body 1 to be quickly transferred to the first heat dissipation fin 3 through the heat-conducting plate 101, improving heat conduction efficiency. The contact groove 201 fits snugly with the first heat dissipation fin 3, increasing the contact area between the two, reducing thermal resistance, and ensuring that heat is effectively conducted to the fin surface for dissipation.
[0028] First linkage members 301 are provided on both sides of the first heat dissipation fin 3, and adjacent fins are connected by telescopic connecting rods 302. The telescopic connecting rods 302 pass through the first linkage members 301 to realize the synchronous movement of multiple sets of first heat dissipation fins 3. During operation, pulling or pushing any one of the first heat dissipation fins 3 will, through the cooperation of the telescopic connecting rods 302 and the first linkage members 301, drive the other fins to rotate and unfold or fold and store synchronously, simplifying the operation process, improving adjustment efficiency, and ensuring that the unfolding angle of multiple sets of fins is consistent, maintaining a uniform heat dissipation effect.
[0029] like Figures 2 to 4 As shown, the first heat dissipation fin 3 has sliding guide rails 401 extending through the mounting cavity 104 at both ends. The second heat dissipation fin 4 also has sliding blocks 402 at both ends corresponding to the two sets of sliding guide rails 401. The second heat dissipation fin 4 is slidably mounted within the sliding guide rails 401 via the two sets of sliding blocks 402. The sliding guide rails 401 extending through the mounting cavity 104 at both ends of the first heat dissipation fin 3 and the sliding blocks 402 at both ends of the second heat dissipation fin 4 form a sliding connection structure. This structure allows the second heat dissipation fin 4 to extend and retract within the mounting cavity 104 along the sliding guide rails 401, adjusting the extension length according to heat dissipation requirements and precisely controlling the heat dissipation area. The sliding guide rails 401 provide guidance and constraint to the sliding blocks 402, ensuring smooth extension and retraction of the second heat dissipation fin 4 and preventing offset and wobbling that could affect the heat dissipation effect. Simultaneously, the sliding blocks 402 and the sliding guide rails 401 fit tightly together, reducing gaps between them and preventing dust and impurities from entering the mounting cavity 104 and affecting the sliding performance of the second heat dissipation fin 4, thus maintaining long-term stable operation of the structure.
[0030] like Figures 2 to 4As shown, a positioning mounting member 501 is also provided on the side of the positioning plate 102 away from the heat-conducting plate 101, corresponding to the second heat dissipation fin 4. One end of the second linkage member 502 is rotatably inserted into the positioning mounting member 501 and locked by a limiting nut. A linkage hole 601 is also provided at the top of the second heat dissipation fin 4, and the other end of the second linkage member 502 is inserted into the linkage hole 601. One end of the second linkage member 502 is inserted into the positioning mounting member 501 and can rotate, and is locked by the limiting nut. The limiting nut can lock the position of the second linkage member 502 to prevent it from falling off during use. At the same time, it also provides a rotation fulcrum and angle positioning for the second linkage member 502, ensuring its stable support and angle adjustment function. The second heat dissipation fin 4 has a linkage hole 601, and the other end of the second linkage member 502 is inserted to establish a mechanical connection, so that the second heat dissipation fin 4 and the second linkage member 502 form a transmission relationship. When the angle of the first heat dissipation fin 3 is adjusted, it drives the second linkage 502 to rotate around the positioning mounting part 501. The second linkage 502 drives the second heat dissipation fin 4 to extend and retract along the sliding guide rail 401 through the linkage hole 601, thereby realizing the linkage of the two sets of heat dissipation fins. When the unfolding angle of the first heat dissipation fin 3 changes, the extension length of the second heat dissipation fin 4 changes accordingly, and the heat dissipation area is adjusted synchronously. The heat dissipation efficiency can be adjusted according to the actual use, so as to increase the applicability of heat dissipation.
[0031] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A power transformer with foldable heat dissipation fins, comprising a transformer body (1) and a heat sink (2), characterized in that: The transformer body (1) has mounting slots on both sides, and the radiator (2) is inserted into the mounting slots and fixed by screws. The radiator (2) includes a heat-conducting plate (101), which is disposed in the mounting slot. Two sets of positioning plates (102) are disposed opposite each other on the side of the heat-conducting plate (101) away from the transformer body (1). Multiple sets of positioning mounting holes (103) are opened through the two sets of positioning mounting holes (103). A first heat dissipation fin (3) is disposed between each two sets of positioning mounting holes (103). The top of the first heat dissipation fin (3) is provided with a mounting post. The first heat dissipation fin (3) is rotatably disposed in the positioning mounting hole (103) through the two sets of mounting posts. An installation cavity (104) is also provided in the first heat dissipation fin (3). A second heat dissipation fin (4) is also provided in the installation cavity (104).
2. The power transformer with foldable heat dissipation fins according to claim 1, characterized in that: A contact groove (201) is also provided on the heat-conducting plate (101) between the two sets of positioning plates (102), and one side of the first heat dissipation fin (3) is in contact with the contact groove (201).
3. A power transformer with foldable heat dissipation fins according to claim 2, characterized in that: Two sets of first linkage members (301) are arranged on both sides of the multiple sets of first heat dissipation fins (3), and telescopic connecting rods (302) are arranged between each pair of adjacent first heat dissipation fins (3). The two ends of the telescopic connecting rods (302) are respectively inserted into the two sets of adjacent first linkage members (301).
4. A power transformer with foldable heat dissipation fins according to claim 1, characterized in that: The first heat dissipation fin (3) has sliding guide rails (401) extending through the mounting cavity (104) at both ends. The second heat dissipation fin (4) has sliding blocks (402) corresponding to the two sets of sliding guide rails (401) at both ends. The second heat dissipation fin (4) is slidably disposed in the sliding guide rails (401) through the two sets of sliding blocks (402).
5. A power transformer with foldable heat dissipation fins according to claim 4, characterized in that: The positioning plate (102) is provided with a positioning mounting component (501) on the side away from the heat-conducting plate (101) corresponding to the second heat dissipation fin (4). One end of the second linkage component (502) is rotatably inserted into the positioning mounting component (501) and locked by a limiting nut.
6. A power transformer with foldable heat dissipation fins according to claim 5, characterized in that: The top end of the second heat dissipation fin (4) is also provided with a linkage hole (601), and the other end of the second linkage member (502) passes through the linkage hole (601).
7. A power transformer with foldable heat dissipation fins according to claim 1, characterized in that: Both the first heat dissipation fin (3) and the second heat dissipation fin (4) are made of aluminum alloy.