Power transformer convenient for heat dissipation

Abstract

The power transformer comprises a transformer body and a heat insulation plate arranged at the bottom of the transformer body, the transformer body comprises a base, a winding and an iron core, the two sides of the surface of the bottom end of the base are each provided with a plurality of terminal pins, the roots of the terminal pins are each provided with an abutting block, and the abutting blocks are connected with the winding and the iron core. A plurality of through holes are formed in the two sides of the surface of the top end of the heat insulation plate, the terminal pins are inserted into the through holes, the abutting block abuts against the surface of the top end of the heat insulation plate, a plurality of flow guide plates are arranged in the middle of the surface of the top end of the heat insulation plate, and ventilation grooves are formed between every two adjacent flow guide plates and the heat insulation plate. Strip-shaped grooves are formed in the flow guide plates, water absorption fiber cotton blocks are arranged in the strip-shaped grooves, and positioning plates are arranged at the four corners of the top end of the heat insulation plate. The heat dissipation effect of the power transformer is improved, meanwhile, the dehumidification function is achieved, the working reliability of the power transformer is guaranteed, and the service life of the power transformer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a power transformer which is convenient for heat dissipation. Background Art

[0002] A transformer is a stationary electrical device consisting primarily of two parts: a winding coil and an iron core. It uses the principle of electromagnetic induction to convert one level of AC voltage and current into another level of voltage and current at the same frequency. Its functions include converting AC voltage, exchanging AC current, transforming impedance, and transferring power.

[0003] During installation, conventional power transformers are typically soldered to lead holes on a PCB board using soldering, leaving the power transformer and PCB board in close contact. This heat, generated by the power transformer during use, prevents heat from dissipating from the joint between the power transformer and the PCB board, leading to heat accumulation and, in turn, affecting or damaging the power transformer and PCB board. Furthermore, the power transformer is also susceptible to damage in humid environments, impacting its service life and reliability. Utility Model Content

[0004] The purpose of the present invention is to provide a power transformer that is easy to dissipate heat, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A power transformer that is easy to dissipate heat includes a transformer body and a heat insulation plate arranged at the bottom of the transformer body, the transformer body includes a base, a winding, and an iron core, a plurality of lead pins are provided on both sides of the bottom surface of the base, and abutment blocks are provided at the roots of the plurality of lead pins, a plurality of through holes are provided on both sides of the top surface of the heat insulation plate, the plurality of lead pins are inserted into the plurality of through holes, the abutment blocks abut against the top surface of the heat insulation plate, a plurality of guide plates are provided in the middle of the top surface of the heat insulation plate, a ventilation groove is formed between two adjacent guide plates and the heat insulation plate, the plurality of guide plates are provided with strip grooves, and absorbent fiber cotton blocks are provided in the strip grooves, and positioning plates are provided at the four corners of the top of the heat insulation plate.

[0007] Preferably, the positioning plate is an L-shaped structure.

[0008] Preferably, the bottom surface of the base abuts against the top ends of a plurality of guide plates, and the guide plates are arranged at equal intervals.

[0009] Preferably, the absorbent fiber cotton block is filled with polymer absorbent resin particles.

[0010] Beneficial effects

[0011] The above one or more technical solutions in the power transformer for facilitating heat dissipation provided by the embodiment of the present invention have at least one of the following technical effects:

[0012] The utility model adopts the above technical solution, by providing a heat insulation plate at the bottom of the transformer body, providing a guide plate on the heat insulation plate, and forming a ventilation groove between two adjacent guide plates and the heat insulation plate, so that the bottom of the transformer body is kept ventilated, and the heat of the transformer body is taken away by air convection, thereby improving the heat dissipation effect, and separating the transformer body from the PCB board by the heat conduction plate and the heat insulation plate to prevent the transformer body from being attached to the PCB board, thereby avoiding heat accumulation and making it easier to dissipate the heat generated by the transformer body; by providing a water-absorbing fiber cotton plate on the guide plate, moisture in the air passing through the ventilation groove can be absorbed to prevent the transformer body from being affected by moisture. The utility model can effectively improve the heat dissipation effect of the transformer body through the above structure, while ensuring that the area near the transformer body is in a relatively dry state, thereby ensuring the service life and working reliability of the power transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the heat insulation board of the utility model;

[0016] Figure 4 This is a schematic diagram of the transformer body structure of the utility model;

[0017] The corresponding relationship between the labels and component names in the figures is as follows:

[0018] 1. Transformer body; 2. Heat insulation board; 3. Base; 4. Winding; 5. Iron core; 6. Lead pin; 7. Abutment block; 8. Through hole; 9. Guide plate; 10. Ventilation slot; 11. Strip slot; 12. Water-absorbent fiber cotton block; 13. Positioning plate. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1-4 As shown, it is a structural schematic diagram of a power transformer that is convenient for heat dissipation in a preferred embodiment of the utility model;

[0022] In this embodiment, it includes a transformer body 1 and a heat insulation board 2 provided at the bottom of the transformer body 1. The heat insulation board 2 is made of PVF plastic material and has strong high temperature resistance and heat insulation capabilities. The transformer body 1 includes a base 3, a winding 4, and an iron core 5. A plurality of lead pins 6 are provided on both sides of the bottom surface of the base 3. Four lead pins 6 are arranged at equal intervals on both sides. Abutment blocks 7 are provided at the roots of the lead pins 6. A plurality of through holes 8 are provided on both sides of the top surface of the heat insulation board 2. Four through holes 8 are arranged at equal intervals on both sides and are used in conjunction with the lead pins 6. The lead pins 6 are inserted into and extended to the bottom end of the heat insulation board 2. The plurality of through holes 8 and the abutment blocks 7 abut against the top surface of the heat insulation board 2. The transformer body 1 and the insulation board 2 are more stable, and the root of the lead pin 6 is more firm to avoid shaking and breaking. Three guide plates 9 are provided in the middle of the top surface of the insulation board 2, and a ventilation groove 10 is formed between two adjacent guide plates 9 and the insulation board 2. The two ends of the three guide plates 9 are chamfered, which can expand the air inlet of the ventilation groove 10, allowing air to enter better. The air enters the ventilation groove 10 and contacts the bottom of the transformer body, and the transformer body 1 is cooled by air convection. The several guide plates 9 are provided with strip grooves 11, and the strip grooves 11 are provided with absorbent fiber cotton blocks 12. Positioning plates 13 are provided at the four corners of the top of the insulation board 2, and the positioning plates 13 are used in conjunction with the abutment blocks 7.

[0023] In this embodiment, the positioning plate 13 is an L-shaped structure. The inner side of the top of the positioning plate 13 is chamfered. During installation, the abutment blocks 7 on both sides of the bottom of the base 3 are embedded in the inner side of the positioning plate 13 and fit against the inner side wall of the positioning plate 13. The positioning plate 13 plays a positioning role between the transformer body 1 and the insulation board 2, making the connection between the transformer body 1 and the insulation board 2 more convenient. The bottom surface of the base 3 abuts against the tops of several guide plates 9. The guide plates 9 are arranged at equal intervals. The guide plates 9 keep the bottom of the transformer body 1 ventilated, increasing the area of ​​contact between the transformer body 1 and the air, thereby increasing the heat dissipation area. The absorbent fiber cotton block 12 is filled with polymer absorbent resin particles. The polymer absorbent resin particles have a strong water absorption capacity. The absorbent fiber cotton block 12 and the polymer absorbent resin particles inside it can effectively absorb moisture from the air, thereby ensuring that the area near the transformer body 1 is relatively dry.

[0024] The utility model provides a power transformer that is convenient for heat dissipation. Its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0025] Technologies not described in detail in the present invention are all well-known technologies. Those skilled in the art can easily implement the present invention based on understanding this specification, and the contents shown in the drawings are part of this specification.

[0026] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A power transformer for facilitating heat dissipation, comprising a transformer body (1) and a heat insulation plate (2) arranged at the bottom of the transformer body (1), characterized in that: The transformer body (1) comprises a base (3), a winding (4), and an iron core (5). A plurality of lead pins (6) are provided on both sides of the bottom surface of the base (3), and abutment blocks (7) are provided at the roots of the plurality of lead pins (6). A plurality of through holes (8) are provided on both sides of the top surface of the heat insulation board (2), and the plurality of lead pins (6) are inserted into the plurality of through holes (8). The abutment blocks (7) abut against the top surface of the heat insulation board (2). A plurality of guide plates (9) are provided in the middle of the top surface of the heat insulation board (2), and ventilation grooves (10) are formed between two adjacent guide plates (9) and the heat insulation board (2). The plurality of guide plates (9) are provided with strip grooves (11), and absorbent fiber cotton blocks (12) are provided in the strip grooves (11). Positioning plates (13) are provided at the four corners of the top of the heat insulation board (2).

2. A power transformer for facilitating heat dissipation according to claim 1, characterized in that: The positioning plate (13) is an L-shaped structure.

3. A power transformer for facilitating heat dissipation according to claim 1, characterized in that: The bottom surface of the base (3) abuts against the top ends of a plurality of guide plates (9), and the plurality of guide plates (9) are arranged at equal intervals.

4. A power transformer for facilitating heat dissipation according to claim 1, characterized in that: The water-absorbing fiber cotton block (12) is filled with high-molecular water-absorbing resin particles.

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