CN213459379U

CN213459379U - Transformer with skeleton air gap

Info

Publication number: CN213459379U
Application number: CN202022374678.XU
Authority: CN
Inventors: 范文明; 孙军龙
Original assignee: Shandong Hesong Electronic Technology Co ltd
Current assignee: Shandong Hesong Electronic Technology Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-06-15
Anticipated expiration: 2030-10-22

Abstract

The utility model relates to a transformer with a framework air gap, which solves the technical problems that the secondary processing is needed to be carried out on a magnetic core when the air gap is obtained by the existing transformer, and the rated current of the air gap of a center post is low; the transformer coil winding device is provided with an E-type magnetic core, an I-type magnetic core, a winding coil and a transformer framework, wherein the E-type magnetic core and the I-type magnetic core are respectively arranged on two sides of the transformer framework, the middle of the E-type magnetic core is cylindrical, the center of the transformer framework is provided with a hollow cylinder, the winding coil is wound on the hollow cylinder, the middle cylinder of the E-type magnetic core is inserted into the hollow cylinder cavity of the transformer framework, a winding baffle is arranged on the transformer framework to isolate the transformer winding coil from the E-type magnetic core, a framework air gap is further arranged on the transformer framework to isolate the transformer winding coil from the I-. The utility model discloses can extensively be in the transformer occasion of needs.

Description

Transformer with skeleton air gap

Technical Field

The utility model relates to a transformer field especially relates to a transformer with skeleton air gap.

Background

In many power type magnetic components, such as flyback transformers, in order to prevent saturation of magnetic materials, that is, as the applied current increases, the magnetic field strength increases, and the magnetic induction strength of a magnetic component without an air gap increases rapidly to reach the saturation induction strength value of the magnetic materials, in this process, the magnetic permeability of the component decreases rapidly, that is, the inductance value decreases rapidly, the function of the transformer is lost, and the function of other components is lost or damaged. The method of preventing saturation of the transformer may be by increasing the gap of the air gap or the gap of the weakly magnetic material. Under the condition that other factors are the same, the air gap or the gap passing through the weak magnetic material has great influence on the inductance value and the saturation characteristic, and when the air gap or the gap is large, the inductance value is small and the saturation characteristic is good; when the air gap or the gap is small, the inductance value increases and the saturation characteristic deteriorates.

A common method is to obtain an air gap by machining the center leg of the core, such as an EE core. The magnetic core of the method needs secondary processing, is easy to damage and has difficult guarantee of higher size requirement. When the air gap is large and small, the method of processing the center leg of the magnetic core to obtain the air gap has many problems.

Disclosure of Invention

The utility model discloses a solve current transformer and obtain the air gap and need carry out secondary operation to the magnetic core, the technical problem that center pillar air gap rated current is low provides one kind and avoids the transformer that has the skeleton air gap of processing the magnetic core air gap.

The utility model provides a transformer with skeleton air gap, it is equipped with E type magnetic core, I type magnetic core, winding coil and skeleton, lay in the skeleton both sides respectively in E type magnetic core and I type magnetic core, the skeleton center is equipped with the cavity cylinder, winding coil winding is on hollow cylinder, the cylinder inserts in the skeleton hollow cylinder cavity in the middle of the E type magnetic core, characterized by, it keeps apart transformer winding coil and E type magnetic core to be equipped with the winding baffle on the skeleton, still be equipped with the skeleton air gap on the skeleton with transformer winding coil and I type magnetic core, E type magnetic core keeps apart with I type magnetic core, form magnetic core side air gap.

Preferably, the framework air gap is provided with an edge limiting block around the I-shaped magnetic core for preventing the I-shaped magnetic core from slipping.

The utility model has the advantages that: the air gap is directly manufactured on the framework, so that secondary processing of the magnetic core can be effectively reduced, the processing amount of the magnetic core is reduced, the process of manufacturing the transformer is saved, and the labor intensity is reduced. Meanwhile, the I-shaped magnetic core is adopted, so that the height of the transformer is effectively reduced, and the electromechanical equipment is convenient to lighten and miniaturize; the magnetic core side air gap can make the transformer acquire high rated current, improves more than 10% than the center pillar air gap, can avoid current side air gap transformer to use the gasket simultaneously, leads to the problem that production efficiency is low.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the front structure of the framework of the present invention;

fig. 3 is a schematic view of the back structure of the framework of the present invention.

Description of the symbols of the drawings:

an E-type magnetic core; a type I magnetic core; 3. a transformer bobbin; 31. a stitch; 32. a winding baffle; 33. a stitch fixing block; 34. a skeletal air gap; 35. strake stopper.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, so that those skilled in the art can easily implement the present invention.

Example 1: as shown in fig. 1, the utility model discloses be equipped with magnetic core and skeleton of transformer 3, the magnetic core is equipped with 2, is E type magnetic core 1 and I type magnetic core 2 respectively, and E type magnetic core 1 and I type magnetic core 2 are installed respectively in skeleton of transformer 3 about both sides, and wherein be cylindrical in the middle of E type magnetic core 1, cylindrical magnetic core inserts in the cylindrical cavity in skeleton of transformer 3 center.

As shown in fig. 2, the utility model discloses 3 central cylindrical cavities of skeleton of transformer, cylindrical cavity both sides are equipped with winding baffle 32 respectively, and the winding coil of transformer centers on cylindrical cavity to twine between winding baffle 32, be close to E type magnetic core 1's winding baffle 32 both ends and be equipped with stitch fixed block 33 respectively, be equipped with a plurality of stitches 31 in the stitch fixed block 33, stitch 31 is connected with the winding coil of transformer respectively.

As shown in fig. 2-3, the utility model discloses to the winding baffle 32 that is close to I type magnetic core 2 expand, expand winding baffle 32 into skeleton air gap 34, make skeleton air gap 34 keep apart E type magnetic core 1 and I type magnetic core 2, form the air gap between the magnetic core, prevent that the transformer from saturating. One side of the back face of the I-shaped magnetic core 2 is attached to the framework air gap 34, an edge limiting block 35 is arranged around the I-shaped magnetic core 2, the edge limiting block 35 protrudes out of the edge of the framework air gap 34, and the edge limiting block and the I-shaped magnetic core 2 are highly consistent, so that the I-shaped magnetic core 2 can be effectively prevented from slipping in the processing and manufacturing process.

The utility model discloses a I type magnetic core 2 and skeleton air gap 34, the magnetic core of transformer produce the side air gap, can make the transformer acquire high rated current, and rated current improves 10% at least than the center pillar air gap, has solved the problem that prior art side air gap used gasket production efficiency to hang down simultaneously.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the scope defined by the claims of the present invention shall be within the protection scope of the present invention.

Claims

1. The utility model provides a transformer with skeleton air gap, its is equipped with E type magnetic core, I type magnetic core, winding coil and skeleton, E type magnetic core and I type magnetic core are laid respectively the skeleton both sides, the skeleton center is equipped with hollow circular cylinder, the winding coil winding is in on the hollow circular cylinder, the cylinder inserts in the middle of the E type magnetic core in the skeleton hollow circular cylinder cavity, characterized by be equipped with the winding baffle on the skeleton with the transformer winding coil with E type magnetic core keeps apart still be equipped with the skeleton air gap on the skeleton will the transformer winding coil with I type magnetic core E type magnetic core with I type magnetic core keeps apart, forms magnetic core side air gap.

2. The transformer of claim 1, wherein the bobbin air gap is provided with a side stop around the I-core to prevent the I-core from slipping off.