CN210006579U - structure for reducing noise of transformer and inductance device - Google Patents

Abstract

The utility model discloses a kind reduce structure of transformer and inductance device noise relates to transformer and inductance noise reduction technical field, including magnetic core and wire to the magnetic core is layered structure, divide into two or more little magnetic cores and constitutes, the winding of magnetic core surface has the wire, the utility model discloses cut apart into with the magnetic core and constitute magnetic cores by two or more little magnetic cores stacks that the volume is less, go to twine the wire again and make the inductance, through this structure, can make the noise show and reduce, have fine practicality.

Description

structure for reducing noise of transformer and inductance device

Technical Field

The utility model relates to a transformer and inductance noise reduction technical field specifically are kinds of structures that reduce transformer and inductance device noise.

Background

Magnetic elements such as transformers and inductor elements are widely used in power electronic converters and become a main factor for restricting the power density of power electronic converters from increasing to .

Fig. 1 shows a conventional transformer and inductor structure, and an -like toroidal inductor structure is formed by winding a conductive wire around magnetic cores, and due to the magnetostrictive property of a magnetic material, the volume of the magnetic material changes with the intensity of magnetic field, which causes vibration waves to be emitted outwards, thereby generating noise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide kinds of structures that reduce transformer and inductance device noise to solve the problem that proposes in the above-mentioned background art.

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

A structure for reducing noise of transformer and inductor comprises a magnetic core and a conductor, wherein the magnetic core is a layered structure and is divided into two or more small magnetic cores, and the conductor is wound on the outer surface of the magnetic core.

As a proposal for the step of the utility model, the layered structure is a top-bottom laminated structure.

As a proposal for the step of the utility model, the layered structure is an inner and outer laminated structure.

As a proposal for the step of the utility model, the layered structure is a mixed structure.

As a scheme for the step of the utility model, the conducting wire is made of copper material.

Compared with the prior art, the beneficial effects of the utility model are that this structure that reduces transformer and inductance device noise cuts apart the magnetic core into and constitutes magnetic cores by two or a plurality of little magnetic cores stack that the volume is less, and the wire that goes to twine makes the inductance again, through this structure, can make the noise show to reduce, has fine practicality.

Drawings

FIG. 1 is a schematic structural diagram of a conventional transformer and inductor structure

Fig. 2 is a schematic structural view of a structure for reducing noise of a transformer and an inductance device.

Fig. 3 is a schematic view showing a structure in which magnetic cores are stacked one on another in a structure for reducing noise of a transformer and an inductor.

Fig. 4 is a schematic diagram of the structure of the inner and outer laminations of the magnetic core in a configuration to reduce noise in the transformer and inductor devices.

Fig. 5 is a schematic diagram of a core hybrid structure in a structure for reducing noise of a transformer and an inductor.

In the figure: 1-magnetic core, 2-wire.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of , but not all embodiments.

kind of structure that reduces transformer and inductance device noise, including magnetic core 1 and wire 2, magnetic core 1 is layered structure, divide into two or a plurality of little magnetic cores and constitutes, 1 surface winding of magnetic core has wire 2, and wire 2 adopts the copper material to make.

Example

Referring to fig. 3, a structure for reducing noise of transformer and inductor is a laminated structure, which is suitable for making transformer and inductor with small outer diameter and no requirement for height.

Example two

Referring to fig. 4, a structure for reducing noise of transformer and inductor is a laminated structure with inner and outer layers, which is suitable for transformer and inductor with large outer diameter and limited height.

EXAMPLE III

Referring to fig. 5, shows a structure for reducing noise of transformer and inductor devices, the layered structure is a hybrid structure, which has the best noise reduction effect and can divide the magnetic core 1 into the most parts.

The noise of the transformer and the inductance device is mainly caused by the change of the magnetic field intensity to change the volume of the magnetic material, and the change of the volume of the magnetic material causes the air to be pushed to transmit the vibration wave, which is the cause of the noise. After dividing magnetic core 1 into two or a plurality of less little magnetic cores of volume and forming, as long as avoid resonant frequency, because small, the volume change of magnetic material that the magnetostriction leads to also can be less, and the amplitude of wave also can be less, just so can effectively reduce the amplitude of noise wave, and then noise reduction.

To above-mentioned structure, the utility model discloses still done relevant test, whether have an effect to the reduction of noise after layering magnetic core 1 in order to test, prepare the inductance of the same magnetic core 1 of three different number of layers structure volume, layers respectively, two layers and three-layer, three kinds of inductance number of turns send, line footpath size send, the alternating current of 5KHZ 1A is passed through to three kinds of inductances respectively, and detect the produced noise size of three kinds of inductances with the sound detection appearance, the contrast test result, the noise decibel is layers 6dB, two layers 4dB, three-layer 3dB, can find out according to test data, magnetic core 1 volume, the number of turns, the inductance that the line footpath is the same is along with the increase of layering, produced noise size can reduce, so magnetic core 1 layering is to have an effect to reducing the inductance noise.

It will thus be seen that the present invention is illustrative, and not restrictive, in any respect from and the scope of the invention is defined by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment contains independent technical solutions, and such description of the description is only for clarity, and those skilled in the art should take the description as as a whole, and the technical solutions in the respective embodiments may be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims (5)

1, structure of reducing transformer and inductance device noise, including magnetic core (1) and wire (2), its characterized in that, magnetic core (1) is the layered structure, divide into two or a plurality of little magnetic cores and constitute, the winding of magnetic core (1) surface has wire (2).

2. The structure for reducing noise in a transformer and inductor according to claim 1, wherein said layered structure is a top-bottom stacked structure.

3. The structure for reducing noise in transformers and inductors according to claim 1 wherein said layered structure is an inner and outer laminated structure.

4. The structure for reducing noise in transformers and inductive devices according to claim 1, wherein said layered structure is a hybrid structure.

5. The structure for reducing noise of transformer and inductance device according to claim 1 or 2, wherein said wire (2) is made of copper material.

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