CN2497407Y

CN2497407Y - Combined transformer iron-core

Info

Publication number: CN2497407Y
Application number: CN 01247529
Authority: CN
Inventors: 吴加林
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-07
Filing date: 2001-09-07
Publication date: 2002-06-26
Anticipated expiration: 2011-09-07

Abstract

A combination typed transformer iron core relates to the transformer iron core in an electrical power device which is formed by the packing combination of a plurality of magnetic ferrite small magnetic cores. The adoption of a plurality of small magnetic cores to combine an iron core with the big volume, solves the problem that the magnetic ferrite can not be directly sintered to manufacture the big volume iron core, on the other hand, the structure mode of packing combination also solves the problem of preventing the yield of iron core backset and avoids the phenomenon that the big capacity transformer produces too much thermal value, so that the transformer iron core is particularly suitable for the manufacture of high frequency and big capacity transformers.

Description

The combined transformer iron core

Relate to the field:

The utility model relates to the transformer core in the power equipment.

Background technology:

Traditional transformer core is mainly by ferrite magnetic material and two kinds of material of silicon steel sheet.The transformer core that ferrite is formed has the high performance of magnetic flux density, but because its sintering manufacturing process restriction, can not direct sintering produces the big capacity iron core of large volume.Therefore be mainly used to make small capacity transformer at present.Though silicon steel sheet can be made jumbo transformer core, because the silicon steel material performance limitations, magnetic flux density is lower, can not adapt to this development in science and technology trend of transformer high frequencyization.Therefore traditional transformer core has hindered the paces of power electronics industry to high frequencyization, big capacity development.

The utility model content:

The purpose of this utility model is the weak point that overcomes existing transformer core, and a kind of magnetic flux density height, capacity is big, relative volume is less combined transformer iron core are provided.

The combined transformer iron core of realization the utility model purpose is piled up by some magnetic ferrites fritter magnetic cores and is constituted.According to the electromagnetic conversion formula: U=4.44 f N Φ m, Φ m=B * S, (U in the formula: transformer input voltage, f: frequency, N: coil turn, Φ m: magnetic flux, B: magnetic flux density, S: core section).Satisfying under the identical transformer capacity prerequisite, certain as magnetic flux Φ m, then magnetic flux density is high more, and core section S can reduce, so core volume also can reduce.In addition, the raising of frequency f, turn number N can reduce, and the volume of whole transformer is reduced.In other words, under transformer fe core volume, area same case, magnetic flux density increases, and helps improving transformer capacity.The utility model improves the iron core magnetic density by the magnetic material of selecting high magnetic flux density for use, reduces volume.Utilize the plurality of small blocks magnetic core to pile up the iron core that constitutes large volume, solved the problem that magnetic ferrites can not direct sintering produce the large volume iron core, on the other hand, the frame mode of piling up combination has also solved the problem that prevents that the iron core eddy current from producing well, has avoided the too big phenomenon of caloric value of high-power transformer.

The utility model is compared with the traditional transformer iron core, has following characteristics: 1, can conveniently constitute different shape and cross section with the monolithic magnetic core, help the loop construction design.2, prevented that more effectively the iron core eddy current from producing, and reduces caloric value.3, under same capability, littler than the silicon sheet core volume.4, easy to manufacture, cost is low.Be particularly suitable for making high frequency, high-power transformer.

Provide embodiment below in conjunction with accompanying drawing.

Description of drawings;

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

Fig. 2 is the left view of Fig. 1

Fig. 3 is the vertical view of Fig. 1

Embodiment;

Referring to Fig. 1, this combined transformer iron core 1 adopts the Ferrite Material of high magnetic flux density, by sintering, be cut into the fritter magnetic core 2 of a certain shape (as brick shape etc.), again several above-mentioned fritter magnetic cores 2 are built or the binding combination in any then is made into jumbo combined transformer iron core by sticking by designing requirement.Except that Ferrite Material, also can select for use the magnetic material of other high magnetic flux density to make fritter magnetic core 2.

Claims

1. combined transformer iron core is characterized in that described iron core is piled up by some magnetic ferrites fritter magnetic cores to constitute.