CN101447316A

CN101447316A - Amorphous core with noise reduction function of epoxy coating and with approximate-circle cross-section

Info

Publication number: CN101447316A
Application number: CNA2008101141711A
Authority: CN
Inventors: 徐继斌; 何力; 张卫国; 徐磊
Original assignee: BEIJING ZHONGJI LIANGONG AMORPHOUS TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: BEIJING ZHONGJI LIANGONG AMORPHOUS TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2008-05-30
Filing date: 2008-05-30
Publication date: 2009-06-03

Abstract

The invention relates to an amorphous core with noise reduction function of epoxy coating and with an approximate-circle cross-section. The amorphous core is formed by packing a plurality of core plates in sequence. The core plates have different widths, wherein, the core plates in the middle of a core limb are wider than the core plates at the two sides of the core limb, and the epoxy coating is coated on at least part of the area of the front end surface and the back end surface of the amorphous core. The core plates can be divided into a plurality of groups, wherein, the same group of core plates have equivalent width. The shape of the cross-section of the core limb is symmetric inside and outside; and the two ends of the core limb take the shape of symmetric steps. The amorphous core of the invention is not only beneficial to saving the usage of copper in a coil but also beneficial to enhancing the intensity of the core, reducing the noise and preventing the insulating materials of the coil from being damaged by extrusive corner angles and is mainly used in various amorphous transformers.

Description

The cross section approximate circle amorphous iron core of epoxy resin layer noise reduction

Technical field

The present invention relates to a kind of cross section approximate circle amorphous iron core of epoxy resin layer noise reduction, belong to technical field of electricity.

Technical background

Amorphous core is folded built in together by the several layers lamination, form the electromagnetic field loop of a closure, be used on equipment such as transformer, transmitting magnetic flux, on the core limb of both sides unshakable in one's determination, put coil, produce alternating magnetic field behind the coil electricity, by iron core the magnetic flux in this magnetic field is passed to another coil to form induced current, realize the effect of energy delivery and transformation thus, the width of each layer lamination all is identical in the amorphous core at present, the cross section of Xing Chenging is rectangular thus, the loop coil that is enclosed within on the core limb also should be rectangular, could adapt with the shape of core limb.Adopt this core construction, the copper consumption of coil is bigger, and the corner angle of corner unshakable in one's determination damage the insulating material on the coil easily.

Summary of the invention

For overcoming the above-mentioned defective of prior art, the invention provides a kind of cross section approximate circle amorphous iron core of epoxy resin layer noise reduction, adopt this iron core to help reducing the copper consumption of coil, and cause damage can for the insulating material of coil.

The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of cross section approximate circle amorphous iron core of epoxy resin layer noise reduction, form by the folded successively system of some laminations, described some laminations have different width, the width of lamination that is positioned at the core limb mid portion is greater than the width of the lamination that is positioned at the core limb both sides, is coated with epoxy resin layer to the small part area on the front/rear end of this amorphous core.

The invention has the beneficial effects as follows: owing on the front/rear end of iron core, be provided with epoxy coating, each lamination is bonded together, make it and to scatter, improved bulk strength unshakable in one's determination thus, reduce noise by epoxy coating; Because the epoxy resin that adopts has certain pliability, can not cause excessive stress on iron core; Owing to be positioned at the width difference of the lamination of core limb different parts, the lamination that is positioned at the core limb mid portion is wide, formed the shape that is similar to circular arc of intermediate projections thus at the two ends of core limb cross section, the corresponding two ends that are enclosed within the coil on the core limb also are the shape of approximate circular arc, under identical area of section, the girth of the coil of this shape is little, help saving the copper consumption of coil, simultaneously, since existing relatively square-section, the edge of core limb unshakable in one's determination will be level and smooth many, do not have the sort of very outstanding rectangle corner angle, therefore should not damage the insulating material of coil.

Description of drawings

Fig. 1 is the partial cross section unshakable in one's determination structural representation that the present invention relates to the core limb cross sectional shape;

Fig. 2 is the core section structural representation that the present invention relates to the core limb cross sectional shape.

Embodiment

Referring to Fig. 1 and Fig. 2, the invention provides a kind of cross section approximate circle amorphous iron core of epoxy resin layer noise reduction, form by the folded successively system of some laminations, described some laminations have different width, the width of lamination that is positioned at the core limb mid portion is greater than the width of the lamination that is positioned at the core limb both sides, is coated with epoxy resin layer 700 to the small part area on the front/rear end of this amorphous core.

Described epoxy resin layer can cover all sites that mustn't take apart on the end face of iron core, also can cover the emphasis part of influence bulk strength unshakable in one's determination and noise, can also adopt the mode of bar shaped coating, the bar shaped epoxy resin layer at the some coupling parts of coating or whole lamination edges on end face of iron core, these bar shaped epoxy resin layers are coupling part or whole edges of laminations on end face of iron core, both arrive fixed iron core sheet purpose, saved the consumption of epoxy resin again.

Described lamination can be divided into some groups, and the width of same group lamination equates, under the situation that guarantees actual effect, reduces difficulty of processing as much as possible thus.

The cross sectional shape of described core limb can be about symmetrical, and two ends are the stairstepping of symmetry.

For example, described lamination can be divided into six group 111,112,113,121,122,123, width equates in twos, two groups of laminations that are positioned at the core limb mid portion are the wideest by 113,123, the two groups of laminations 111,121 that are positioned at the core limb both sides are the narrowest, and the lamination width that is positioned at lamination group 112,122 between the two is placed in the middle.

Also can adopt the packet mode of other laminations, for example be divided into eight groups or four groups.When being divided into eight groups, respectively be four groups in the both sides of the symmetrical center line in core limb cross section, width of each group reduces to both sides successively from symmetrical center line, has formed the stepped of symmetry thus; When being divided into four groups, two groups the width that is positioned at the core limb mid portion is greater than two groups the width that is positioned at both sides.

When number of packet is got over for a long time, the core limb cross-sectional shape is level and smooth more, but processing is trouble more, therefore can be according to the performance requirement of iron core, size and process equipment and the many-sided factor of processing quantity unshakable in one's determination, take all factors into consideration the packet mode of lamination, on cost and performance, obtain the balance point an of the best.

Stand out between each group should make that the shape at two ends, core limb cross section is a circular arc or other level and smooth arcs generally.

According to applicant's experiment, this amorphous core structure also helps improves performance unshakable in one's determination, helps reducing sectional area unshakable in one's determination, and then reduces consumption of materials unshakable in one's determination.

This amorphous core can adopt existing mode to make, and the amorphous steel band of employing different in width is sheared out the lamination of different in width, can adopt existing various packaged type and joint design.

The main TV structure of this amorphous core is generally the straight-flanked ring of four angular distortions.Described core limb is two vertical sides of this straight-flanked ring.

Amorphous core of the present invention can be used for transformer or other similar products of twin coil singlecore.

Claims

1. the cross section approximate circle amorphous iron core of an epoxy resin layer noise reduction, form by the folded successively system of some laminations, it is characterized in that described some laminations have different width, the width of lamination that wherein is positioned at the core limb mid portion is greater than the width of the lamination that is positioned at the core limb both sides, is coated with epoxy resin layer to the small part area on the front/rear end of this amorphous core.

2. the cross section approximate circle amorphous iron core of epoxy resin layer noise reduction as claimed in claim 1 is characterized in that described epoxy resin layer is some bar shapeds, and described bar shaped annular resin layer connects the edge of described part or all of lamination on end face of iron core.

3. the cross section approximate circle amorphous iron core of epoxy resin layer noise reduction as claimed in claim 1 or 2 is characterized in that described lamination is divided into some groups, and the width of same group lamination equates.

4. the cross section approximate circle amorphous iron core of epoxy resin layer noise reduction as claimed in claim 3 is characterized in that the cross sectional shape of described core limb is about symmetrical, and two ends are the stairstepping of symmetry.

5. the cross section approximate circle amorphous iron core of epoxy resin layer noise reduction as claimed in claim 3 is characterized in that described lamination is divided into six groups, and width equates in twos, and two groups of wherein being positioned at the core limb mid portion are the wideest, and two groups of being positioned at the core limb both sides are the narrowest.

6. the cross section approximate circle amorphous iron core of epoxy resin layer noise reduction as claimed in claim 3 is characterized in that described lamination is divided into eight groups, respectively is four groups in the both sides of the symmetrical center line in core limb cross section, and width of each group reduces to both sides successively from symmetrical center line.

7. the cross section approximate circle amorphous iron core of epoxy resin layer noise reduction as claimed in claim 3 is characterized in that described lamination is divided into four groups, and two groups the width that wherein is positioned at the core limb mid portion is greater than two groups the width that is positioned at both sides.