CN219040205U - Transformer - Google Patents

Abstract

The application provides a transformer, including base, magnetic core and coil, the magnetic core sets firmly on the base, and the coil is around locating the magnetic core, and the magnetic core has the heat dissipation through-hole that runs through both ends. The magnetic core is provided with the heat dissipation through holes, the surface area of the magnetic core is increased, heat can be released to the periphery more quickly, and meanwhile, when the cooling device is matched for use, the magnetic core provided with the heat dissipation through holes has better cooling effect compared with the original whole magnetic core.

Description

Transformer

Technical Field

The utility model relates to the technical field of power equipment, in particular to a transformer.

Background

The transformer is a static electric appliance for exchanging voltage, and is a power transmission device for converting voltage with a certain frequency into another or more voltages with different values with the same frequency by using an electromagnetic induction principle. The transformer is in operation, and the hysteresis loss and the eddy current loss of the iron core and the copper loss of the coil are converted into heat, so that the transformer heats, the voltage endurance of the insulating material of the transformer is reduced due to the heat, and the service life of the transformer is also reduced due to continuous heat.

In the prior art, an external cooling device, such as a fan, silica gel, etc., is arranged beside the transformer, and the cooling effect achieved by the external cooling device is not ideal under the continuous working state of the transformer.

Disclosure of Invention

Aiming at the defects of the prior art, the application provides a transformer.

The application discloses a transformer includes: base, magnetic core and coil, the magnetic core sets firmly on the base, and the coil is around locating the magnetic core, and the magnetic core has the heat dissipation through-hole that runs through both ends.

Preferably, the magnetic core comprises a magnetic core body, the magnetic core body comprises an inner ring and an outer ring, the outer ring is arranged outside the inner ring and connected with the inner ring, the coil is wound on the inner ring, and the heat dissipation through hole is arranged on the inner ring.

Preferably, the outer ring comprises a first wall surface, a second wall surface, a third wall surface and a fourth wall surface, wherein the first wall surface and the second wall surface are oppositely arranged and are parallel to each other, the third wall surface and the fourth wall surface are oppositely arranged and are parallel to each other, the first wall surface, the second wall surface, the third wall surface and the fourth wall surface are sequentially connected end to end, and the adjacent wall surfaces are mutually perpendicular.

Preferably, the inner ring is a cylinder, and two bottom surfaces of the inner ring are respectively connected with the first wall surface and the second wall surface.

Preferably, the heat dissipation through hole penetrates through the first wall surface, the inner ring and the second wall surface in sequence.

Preferably, the coil is a flat wire.

Preferably, the coil is a film covered wire.

Preferably, the coil is a flat film covered wire.

Preferably, the coil is provided with a pin, the magnetic core is fixedly arranged on one side of the base, and the pin extends to the other side of the base.

Preferably, the coil comprises a first winding and a second winding, the first winding is wound on the inner coil, and the second winding is wound outside the first winding.

The beneficial effects of this application lie in: the magnetic core is provided with the heat dissipation through holes, the surface area of the magnetic core is increased, heat can be released to the periphery more quickly, and meanwhile, when the cooling device is matched for use, the magnetic core provided with the heat dissipation through holes has better cooling effect compared with the original whole magnetic core.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a perspective view of a transformer in an embodiment;

FIG. 2 is a cross-sectional view of a transformer in an embodiment;

fig. 3 is a perspective view of the transformer after the base is hidden in the embodiment.

Reference numerals:

1-a base; 2-a magnetic core; 3-coil; 21-heat dissipation through holes; 22-a magnetic core body; 31-a first winding; 32-a second winding; 33-pins; 221-inner ring; 222-an outer ring; 2221—a first wall; 2222-second wall; 2223-third wall; 2224-fourth wall.

Detailed Description

Various embodiments of the present application are disclosed in the following figures, in which numerous practical details are set forth in the following description for purposes of clarity. However, it should be understood that these practical details are not to be taken as limiting the present application. That is, in some embodiments of the present application, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indicators such as up, down, left, right, front, and rear … … in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture such as that shown in the drawings, and if the particular posture is changed, the directional indicator is changed accordingly.

In addition, descriptions such as those related to "first," "second," and the like, are used herein for descriptive purposes only and are not specifically intended to be order or order limiting, nor are they intended to limit the present application solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying a relative importance or an order of implying any particular order among or between such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

For a further understanding of the application, features and effects of the present application, the following examples are set forth to illustrate, together with the drawings, the detailed description of which follows:

referring to fig. 1, fig. 1 is a perspective view of a transformer in the present embodiment, where the transformer includes a base 1, a magnetic core 2, and a coil 3, the base 1 is used for carrying the magnetic core and for installing the transformer in an electrical apparatus, the magnetic core 2 is used for generating a magnetic field, and the coil 3 is used for providing and outputting an ac current.

The magnetic core is fixedly arranged on the base 1, the coil 3 is wound on the magnetic core 2, and the magnetic core 2 is provided with heat dissipation through holes 21 penetrating through two ends.

When the transformer is particularly applied, the primary coil of the coil 3 is electrified to work by alternating current, the magnetic core 2 generates an alternating magnetic field, the secondary coil of the coil 3 is influenced by the alternating magnetic field to generate induced electromotive force, namely output voltage, so that the transformer works, and on one hand, the size and the direction of magnetic force lines in the magnetic core 2 are changed along with the input of the alternating current, so that molecules in the magnetic core 2 are rubbed with each other, and heat is released to cause the magnetic core 2 to generate heat; on the other hand, the magnetic core 2 has magnetic lines passing therethrough, and an induced current is generated in a plane perpendicular to the magnetic lines, and the current forms a loop by itself in a closed loop, and is in a vortex shape, so that it is called an eddy current. The presence of eddy currents heats the core.

After the magnetic core 2 heats, as the heat dissipation through hole 21 is arranged on the magnetic core 2, the surface area of the magnetic core 2 is increased, when the contact area between the transformer and the outside is larger, the magnetic core 2 can dissipate heat more quickly, and the heat dissipation through hole 21 can improve the heat dissipation efficiency of the magnetic core 2; when a cooling device such as a fan is provided in the connected appliance, the heat dissipation effect of the heat transformer is more remarkable.

So, set up the heat dissipation through-hole 21 on magnetic core 2, the surface area of magnetic core 2 increases, can be faster release heat to the surrounding, and simultaneously lie in when cooling device cooperation uses, magnetic core 2 after setting up the heat dissipation through-hole 21 compares original monoblock magnetic core 2 cooling effect better.

Referring to fig. 2 and 3, fig. 2 is a cross-sectional view of a transformer in an embodiment, fig. 3 is a perspective view of a transformer in an embodiment after a base is hidden, further, a magnetic core 2 includes a magnetic core body 22, the magnetic core body 22 includes an inner ring 221 and an outer ring 222, the outer ring 222 is disposed outside the inner ring 221 and connected with the inner ring 221, a coil 3 is wound around the inner ring 221, and a heat dissipation through hole 21 is disposed in the inner ring 221.

In this way, the inner ring 221 serves as the core leg portion of the magnetic core 2, the outer ring 222 serves as the yoke portion of the magnetic core 2, the inner ring 221 and the outer ring 222 of the magnetic core body 22 form a closed magnetic circuit, the coil is wound around the inner ring 221, and the outer ring 222 is wound around the inner ring 221, so that the space between the inner ring 221 and the outer ring 222 can be fully utilized, and the volume of the transformer can be reduced.

Further, the collar 222 includes a first wall surface 2221, a second wall surface 2222, a third wall surface 2223 and a fourth wall surface 2224, the first wall surface 2221 is disposed opposite to and parallel to the second wall surface 2222, the third wall surface 2223 is disposed opposite to and parallel to the fourth wall surface 2224, the first wall surface 2221, the second wall surface 2222, the third wall surface 2223 and the fourth wall surface 2224 are connected end to end in sequence, and the adjacent wall surfaces are perpendicular to each other.

In this way, the first wall surface 2221, the second wall surface 2222, the third wall surface 2223 and the fourth wall surface 2224 are combined into the outer ring 222 with square cross section, and the shape of the outer ring 222 determines the shape of the iron core body, so that the iron core cross section is square, and when the electric appliance needs a plurality of transformers to work together, the plurality of transformers with square cross section can reduce the occupied electric appliance internal space.

Further, the inner ring 221 is a cylinder, and two bottom surfaces of the inner ring 221 are respectively connected to the first wall surface 2221 and the second wall surface 2222.

In this way, the cylindrical inner ring 221 facilitates winding of the coil 3, and makes winding of the coil 3 more convenient.

Further, the heat dissipation through hole 21 penetrates the first wall surface 2221, the inner ring 221, and the second wall surface 2222 in order.

When the electric appliance is internally provided with a fan, wind generated by the fan can enter the inner ring 221 through the first wall surface 2221 or the second wall surface 2222, so that the inner ring 221 is better in cooling effect.

Further, the coil 3 is a flat wire.

In this way, flat wires are used as the coils 3, which occupy less space than ordinary wires, and the space between the inner ring 221 and the outer ring 222 can be fully utilized.

Further, the coil 3 is a film covered wire.

Therefore, compared with the common wire, the wire adopting the film covered wire is applied to the transformer as the coil 3, so that the coil 3 has good high-frequency performance, high insulating strength, good heat resistance and strong radiation resistance.

Further, the coil 3 is a flat film covered wire.

Thus, the coil 3 can fully utilize the space in the magnetic core 2 and has better insulating property, high-frequency property, heat resistance and radiation resistance.

Further, the coil 3 has a pin 33, the magnetic core 2 is fixed on one side of the base 1, and the pin 33 extends to the other side of the base 1.

So, the iron core is installed in one side of base 1, and coil 3 winds on the iron core, and pin 33 extends to the opposite side of base 1, when installing the transformer in the electrical apparatus, only need be fixed in the electrical apparatus with base 1, make the iron core be located the one side of keeping away from the electrical apparatus, in the circuit of pin 33 alright direct access electrical apparatus, simple to operate.

Further, the coil 3 includes a first winding 31 and a second winding 32, the first winding 31 is wound on the inner ring 221, and the second winding 32 is wound outside the first winding 31.

Thus, the first winding 31 is used as an initial coil, the second winding 32 is used as a secondary coil, and the first winding 31 and the second winding 32 are wound on the inner ring 221 in a layered manner, so that the coil 3 is wound with the iron core, and is more neat in arrangement, and further fully utilizes the iron core space.

In conclusion, set up the heat dissipation through-hole on the magnetic core, the surface area of magnetic core increases, can be faster release heat to the surrounding, and simultaneously lie in when cooling device cooperation uses, the magnetic core after setting up the heat dissipation through-hole is better than original monoblock magnetic core cooling effect.

The above are merely embodiments of the present application and are not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of the present application, are intended to be included within the scope of the claims of the present application.

Claims (10)

1. A transformer, comprising: base (1), magnetic core (2) and coil (3), magnetic core (2) set firmly in on base (1), coil (3) are around locating magnetic core (2), magnetic core (2) have heat dissipation through-hole (21) that run through both ends.

2. The transformer according to claim 1, wherein the magnetic core (2) comprises a magnetic core body (22), the magnetic core body (22) comprises an inner ring (221) and an outer ring (222), the outer ring (222) is arranged outside the inner ring (221) and connected with the inner ring, the coil (3) is wound on the inner ring (221), and the heat dissipation through hole (21) is arranged on the inner ring (221).

3. The transformer according to claim 2, wherein the outer ring (222) includes a first wall surface (2221), a second wall surface (2222), a third wall surface (2223) and a fourth wall surface (2224), the first wall surface (2221) and the second wall surface (2222) are disposed opposite to and parallel to each other, the third wall surface (2223) and the fourth wall surface (2224) are disposed opposite to and parallel to each other, the first wall surface (2221), the second wall surface (2222), the third wall surface (2223) and the fourth wall surface (2224) are connected end to end in sequence, and the adjacent wall surfaces are perpendicular to each other.

4. A transformer according to claim 3, wherein the inner ring (221) is cylindrical, and two bottom surfaces of the inner ring (221) are respectively connected to the first wall surface (2221) and the second wall surface (2222).

5. The transformer according to claim 4, wherein the heat dissipation through hole (21) penetrates the first wall surface (2221), the inner ring (221) and the second wall surface (2222) in order.

6. Transformer according to claim 1, characterized in that the coil (3) is a flat wire.

7. Transformer according to claim 1, characterized in that the coil (3) is a film covered wire.

8. Transformer according to claim 1, characterized in that the coil (3) is a flat film covered wire.

9. Transformer according to claim 1, characterized in that the coil (3) has pins (33), the core (2) being fixed to one side of the base (1), the pins (33) extending to the other side of the base (1).

10. Transformer according to claim 2, characterized in that the coil (3) comprises a first winding (31) and a second winding (32), the first winding (31) being wound on the inner ring (221), the second winding (32) being wound outside the first winding (31).

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