CN204242743U - The miniature transformer of high efficiency and heat radiation - Google Patents

Abstract

The utility model discloses a small transformer with efficient heat dissipation, which comprises a base plate, a side plate, a heat dissipation strip, a magnetic core, a secondary winding, a heat dissipation sheet, a heat dissipation cover plate, an inner layer coil, an outer layer coil and a primary winding. Located at the bottom of the transformer, there are primary windings and secondary windings above the substrate, a magnetic core is provided in the middle of the primary winding and secondary winding, a heat dissipation strip is provided inside the magnetic core, an inner coil is provided on the surface of the magnetic core, and the outer surface of the inner coil is There is a heat sink, and the exterior of the heat sink is provided with an outer layer coil. The heat sink, the outer layer coil and the inner layer coil form the primary winding and the secondary winding. The two ends of the substrate are provided with side plates, and the upper end of the side plate is provided with a heat sink. Cover plate, by changing the layout of the coil on the winding, the heat dissipation effect of the coil is greatly improved, and then the heat dissipation effect of the magnetic core is increased by changing the structure of the magnetic core, and finally the heat dissipation effect of the transformer is improved by increasing the heat transfer speed of the winding coil and the surface of the magnetic core .

Description

Small Transformer with Efficient Heat Dissipation

technical field

The utility model relates to an electrical equipment, in particular to a small transformer with high efficiency heat dissipation.

Background technique

Transformers have been widely used in our lives, but the internal temperature of the transformer is often higher and higher due to insufficient heat dissipation, which causes the heat exchanger to burn out. Large transformers can dissipate heat through circulating oil, but small transformers cannot. .

Utility model content

The purpose of this utility model is to provide a small transformer with efficient heat dissipation, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A small transformer with efficient heat dissipation, including a substrate, a side plate, a heat dissipation strip, a magnetic core, a secondary winding, a heat sink, a heat dissipation cover, an inner coil, an outer coil and a primary winding, the substrate is located at the bottom of the transformer, and the substrate A primary winding and a secondary winding are provided above, a magnetic core is provided in the middle of the primary winding and the secondary winding, a heat dissipation bar is provided inside the magnetic core, an inner coil is provided on the surface of the magnetic core, and a heat sink is provided on the outer surface of the inner coil. The exterior of the heat sink is provided with an outer layer coil, the heat sink, the outer layer coil and the inner layer coil form a primary winding and a secondary winding, the two ends of the base plate are provided with side plates, and the upper end of the side plate is provided with a heat dissipation cover.

As a further solution of the utility model: the material of the substrate is nylon base.

As a further solution of the present invention: two grooves are arranged in the base plate.

As a further solution of the present invention: the material of the heat sink is aluminum alloy.

As a further solution of the utility model: the magnetic core is composed of multiple magnetic blocks.

As a further solution of the present invention: the side plate is fixed on the base plate by hot melting.

Compared with the prior art, the beneficial effect of the utility model is: by changing the arrangement of the coils on the winding, the heat dissipation effect of the coil is greatly improved, and then the heat dissipation effect of the magnetic core is increased by changing the structure of the magnetic core, and finally by increasing the winding coil And the heat transfer speed on the surface of the magnetic core improves the heat dissipation effect of the transformer. The utility model greatly increases the heat dissipation speed of the small transformer with high heat dissipation by the way from the part to the whole.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, in the embodiment of the utility model, a small transformer with high efficiency heat dissipation includes a substrate 1, a side plate 2, a heat dissipation strip 3, a magnetic core 4, a secondary winding 5, a heat sink 6, a heat dissipation cover 7, The inner coil 8, the outer coil 9 and the primary winding 10. The substrate 1 is located at the bottom of a small transformer with high heat dissipation. The material of the substrate 1 is nylon base. There are two left and right grooves in the substrate 1 for placing the magnetic core 4, The primary winding 10 and the secondary winding 5, the primary winding 10 and the secondary winding 5 are respectively placed in the left groove and the right groove of the substrate 1, so that on the one hand, the internal structure of the device is more compact, on the other hand The contact area between the substrate 1 and the magnetic core 4 is larger, which is beneficial to the heat dissipation of the iron core 4. The inner layer coil 8 is provided outside the magnetic core 4, and the outer side of the inner layer coil 8 is provided with a cooling fin 6. The material of the cooling fin 6 is aluminum alloy. Aluminum alloy is adopted here because the aluminum alloy material itself is easy to obtain and has good thermal conductivity, and the market price of aluminum alloy is relatively cheap. An outer layer coil 9 is arranged on the outside of the heat sink 6. The primary winding 10 and the secondary winding 5 are formed with the inner coil 8. Here, the inner coil 8 and the outer coil 9 adopt a flat winding method, so that the coil covers the magnetic core 4 as much as possible. This winding method reduces the The thickness of the coil is conducive to the dissipation of heat, and this winding method reduces the usage of the coil and reduces the cost. The magnetic core 4 is stacked together by a plurality of magnetic sheets, which can prevent the generation of eddy current, and then The generation of heat is reduced, and the middle part of the magnetic core 4 is provided with a heat dissipation strip 3. The function of the heat dissipation strip 3 is to transfer the heat inside the magnetic core 4 to the side plate 2, thereby reducing the temperature of the magnetic core 4. The side plate 2 is connected by hot melting Fixed on the substrate 1, the upper end of the side plate 2 is provided with a heat dissipation cover 7, the heat dissipation cover 7 absorbs and then dissipates the heat on the upper surface of the magnetic core 4, so that the primary winding 10, the secondary winding 5 and the magnetic core 4 The heat generated during work is dissipated in all directions, thus solving the problem of equipment damage caused by traditional small transformers due to too slow heat dissipation.

The working principle of the utility model is: the utility model adopts the method from part to whole to improve the heat dissipation speed of the transformer, and the coil winding adopts a flat winding method to reduce the thickness of the coil, so that the coil heat dissipation is faster, and the upper coil of the winding is divided into inner coils And the outer coil, there is a heat sink in the middle, which further speeds up the heat dissipation of the coil. The magnetic core is stacked with multiple magnetic sheets to prevent the generation of eddy currents, which reduces energy consumption and heat generation. The bottom of the device The substrate adopts a groove structure, which increases the contact area between the substrate, the coil and the magnetic core, thereby improving the heat dissipation speed. The upper end of the device is equipped with a heat dissipation cover, and the heat dissipation cover covers the magnetic core, so that the heat on the coil and the upper end of the magnetic core be able to disperse.

Claims (6)

1. the miniature transformer of a high efficiency and heat radiation, comprise substrate, side plate, heat sink strip, magnetic core, secondary winding, fin, heat-dissipating cover plate, inner coil, outer coil and armature winding, it is characterized in that, described substrate is positioned at bottom the miniature transformer of high efficiency and heat radiation, surface is provided with armature winding and secondary winding, magnetic core is provided with in the middle part of described armature winding and secondary winding, magnetic core inside is provided with heat sink strip, magnetic core surface is provided with inner coil, inner coil appearance is provided with fin, fin appearance is provided with outside layer line circle, fin, outer coil and inner coil constitute armature winding and secondary winding, described substrate two ends are provided with side plate, the upper end of side plate is provided with heat-dissipating cover plate.

2. the miniature transformer of a kind of high efficiency and heat radiation according to claim 1, is characterized in that, the material of described substrate is nylon based.

3. the miniature transformer of a kind of high efficiency and heat radiation according to claim 1, is characterized in that, is provided with two grooves in described substrate.

4. the miniature transformer of a kind of high efficiency and heat radiation according to claim 1, is characterized in that, the material of described fin is aluminium alloy.

5. the miniature transformer of a kind of high efficiency and heat radiation according to claim 1, is characterized in that, described magnetic core is made up of multi-disc magnetic patch.

6. the miniature transformer of a kind of high efficiency and heat radiation according to claim 1, is characterized in that, described side plate is fixed on substrate by hot melt.