CN110767427A - Magnetic core and transformer comprising same - Google Patents
Magnetic core and transformer comprising same Download PDFInfo
- Publication number
- CN110767427A CN110767427A CN201810845864.1A CN201810845864A CN110767427A CN 110767427 A CN110767427 A CN 110767427A CN 201810845864 A CN201810845864 A CN 201810845864A CN 110767427 A CN110767427 A CN 110767427A
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- core unit
- transformer
- shaped groove
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005452 bending Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000004907 flux Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a magnetic core and a transformer comprising the same. The magnetic core is used for a transformer and includes two legs, a center pillar, a core unit, a 'U' -shaped groove, and a gap portion. The U-shaped groove is located at the top of the magnetic core unit and extends along the height direction of the magnetic core unit, the U-shaped groove is provided with a middle connecting portion and two bent portions, and the U-shaped groove divides the magnetic core unit into a first portion, a second portion, a third portion and a fourth portion. The intermediate connecting portion constitutes a gap portion. The first portion and the third portion are located on both sides of the intermediate connecting portion, the third portion is located between the two bent portions, and the third portion constitutes the center pillar. The second part and the fourth part are positioned at the outer sides of the two bent parts, and the second part and the fourth part form two side legs. The centering column does not need to be ground on the magnetic core unit, so that the consumption of manpower and equipment is avoided, and the cost is reduced and the environment is protected. The first part, the second part, the third part and the fourth part form a complete closed magnetic circuit, and magnetic flux leakage is not easy to occur.
Description
Technical Field
The invention relates to the field of transformers, in particular to a magnetic core and a transformer comprising the same.
Background
At present, in the actual production process of the soft magnetic ferrite magnetic core for the transformer, gap processing is needed. The gap is formed by grinding a center pillar of the magnetic core to adjust the inductance of the transformer using a grinding wheel, while the dimensions of the legs of the magnetic core are not changed. The prior art magnetic core typically includes two core units that are aligned to form a pair of gapped cores. In addition, there are cores with single gaps, i.e., the center leg of one core unit is not ground down, and the center leg of the other core unit is ground down. On one hand, the cost is high because the middle column needs to be ground down and manpower and equipment are needed; on the other hand, the subsequent grinding material of the center pillar needs to be more before the center pillar is ground to be lower, which also results in higher cost. In addition, the grinding material of the center pillar is easy to pollute the environment, and is not environment-friendly. In addition, the magnetic core in the prior art is formed by two magnetic core units together, the side legs are easy to attach and are not tight, and the magnetic core is an open-circuit magnetic core and is easy to leak magnetic flux.
In conclusion, the magnetic core in the prior art has the defects of high cost, easy environmental pollution and easy magnetic leakage.
Disclosure of Invention
The invention aims to overcome the defects that a magnetic core in the prior art is high in cost, easy to pollute the environment and easy to leak magnetism, and provides the magnetic core and a transformer comprising the same.
The invention solves the technical problems through the following technical scheme:
a magnetic core for a transformer, the magnetic core including two legs and a center pillar, the magnetic core comprising:
a magnetic core unit;
the U-shaped groove is positioned at the top of the magnetic core unit, extends along the height direction of the magnetic core unit, is provided with a middle connecting part and two bending parts, and divides the magnetic core unit into a first part, a second part, a third part and a fourth part;
a gap portion, the intermediate connection portion constituting the gap portion;
the first part and the third part are positioned on two sides of the middle connecting part, the third part is positioned between the two bending parts, and the third part forms the middle column;
the second part and the fourth part are respectively positioned at the outer sides of the two bending parts, and the second part and the fourth part form two side legs.
In this scheme, "U" type groove can direct forming in order to form the clearance part on the magnetic core unit, need not grind low to the center pillar in addition on the magnetic core unit, has avoided owing to polish the consumption to manual work and equipment to be favorable to reduce cost and environmental protection. In addition, the first part, the second part, the third part and the fourth part form a complete closed magnetic circuit, and magnetic flux leakage is not easy to occur.
Preferably, a length direction of the intermediate connection portion is parallel to a length direction of the core unit.
The invention also provides a transformer, which is characterized by comprising the magnetic core.
Preferably, the transformer further comprises a conductive element, and the conductive element is clamped in the gap part.
In the scheme, the conductive element can be directly clamped in the gap part, and a coil does not need to be additionally wound, so that the cost is further reduced.
Preferably, the conductive element is a copper sheet.
In this scheme, just can adjust the inductance of the transformer that contains this magnetic core comparatively conveniently through the thickness of adjustment copper sheet.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
in this magnetic core, "U" type groove can direct forming in order to form the clearance part on the magnetic core unit, need not grind low to the center pillar in addition on the magnetic core unit, has avoided because the consumption of polishing to manual work and equipment to be favorable to reduce cost and environmental protection. In addition, the first part, the second part, the third part and the fourth part form a complete closed magnetic circuit, and magnetic flux leakage is not easy to occur. Correspondingly, the transformer comprising the magnetic core has the advantages of low cost, environmental protection and low magnetic flux leakage.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic core according to a preferred embodiment of the invention.
Description of reference numerals:
10 magnetic core unit
20 'U' shaped groove
201 bending part
202 intermediate connection part
30 first part
40 second part
50 third part
60 fourth section
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
The present embodiment discloses a magnetic core including two legs and a center pillar, as will be understood from fig. 1, the magnetic core further includes a core unit 10 and a "U" shaped groove 20, the "U" shaped groove 20 is located at the top of the core unit 10, the "U" shaped groove 20 extends along the height direction of the core unit 10, the "U" shaped groove 20 has a middle connection portion 202 and two bent portions 201, the "U" shaped groove 20 divides the core unit 10 into a first portion 30, a second portion 40, a third portion 50 and a fourth portion 60, and the middle connection portion 202 constitutes a gap portion. Wherein the first portion 30 and the third portion 50 are located at two sides of the middle connection portion 202, and the third portion 50 is located between the two bent portions 201, and the third portion 50 constitutes a center pillar; the second portion 40 and the fourth portion 60 are respectively located at the outer sides of the two bent portions 201, and the second portion 40 and the fourth portion 60 form two side legs.
In this embodiment, the "U" -shaped groove 20 may be directly formed on the magnetic core unit 10 to form a gap portion, and it is not necessary to additionally grind down the centering rod on the magnetic core unit 10, thereby avoiding the consumption of labor and equipment due to grinding, and being beneficial to cost reduction and environmental protection. In addition, the first part 30, the second part 40, the third part 50 and the fourth part 60 form a complete closed magnetic circuit, and magnetic leakage is not easy to occur.
Further, in the present embodiment, the longitudinal direction of the intermediate connection portion 202 is parallel to the longitudinal direction of the core unit 10.
The embodiment also discloses a transformer (not shown in the figure), which comprises the magnetic core. In addition, the transformer includes a conductive element (not shown) that is captured within the gap portion. In this embodiment, the conductive element is a copper sheet.
The conductive element can be directly clamped in the gap part, and a coil does not need to be wound additionally, so that the cost is further reduced. The inductance of the transformer containing the magnetic core can be conveniently adjusted by adjusting the thickness of the copper sheet.
For the magnetic core in the embodiment, the U-shaped groove 20 can be directly formed on the magnetic core unit 10 to form a gap part, and the middle column does not need to be additionally ground on the magnetic core unit 10, so that the consumption of manpower and equipment due to grinding is avoided, and the cost reduction and environmental protection are facilitated. In addition, the first part 30, the second part 40, the third part 50 and the fourth part 60 form a complete closed magnetic circuit, and magnetic leakage is not easy to occur. Correspondingly, the transformer comprising the magnetic core has the advantages of low cost, environmental protection and low magnetic flux leakage.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (5)
1. A magnetic core for a transformer, the magnetic core including two legs and a center post, the magnetic core comprising:
a magnetic core unit;
the U-shaped groove is positioned at the top of the magnetic core unit, extends along the height direction of the magnetic core unit, is provided with a middle connecting part and two bending parts, and divides the magnetic core unit into a first part, a second part, a third part and a fourth part;
a gap portion, the intermediate connection portion constituting the gap portion;
the first part and the third part are positioned on two sides of the middle connecting part, the third part is positioned between the two bending parts, and the third part forms the middle column;
the second part and the fourth part are respectively positioned at the outer sides of the two bending parts, and the second part and the fourth part form two side legs.
2. The magnetic core according to claim 1, wherein a length direction of the intermediate connection portion is parallel to a length direction of the magnetic core unit.
3. A transformer, characterized in that it comprises a magnetic core according to claim 1 or 2.
4. The transformer of claim 3, further comprising a conductive element captured within the gap portion.
5. The transformer of claim 4, wherein the conductive element is a copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845864.1A CN110767427A (en) | 2018-07-27 | 2018-07-27 | Magnetic core and transformer comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845864.1A CN110767427A (en) | 2018-07-27 | 2018-07-27 | Magnetic core and transformer comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110767427A true CN110767427A (en) | 2020-02-07 |
Family
ID=69328035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810845864.1A Pending CN110767427A (en) | 2018-07-27 | 2018-07-27 | Magnetic core and transformer comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110767427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616290A (en) * | 2018-12-10 | 2019-04-12 | 南通市海王电气有限公司 | A kind of magnetic core and the transformer comprising it |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1202569A (en) * | 1966-12-01 | 1970-08-19 | Transalpina Unternehmung Fur I | Choke or transformer |
| CN208433284U (en) * | 2018-07-27 | 2019-01-25 | 上海继胜磁性材料有限公司 | Magnetic core and transformer comprising it |
-
2018
- 2018-07-27 CN CN201810845864.1A patent/CN110767427A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1202569A (en) * | 1966-12-01 | 1970-08-19 | Transalpina Unternehmung Fur I | Choke or transformer |
| CN208433284U (en) * | 2018-07-27 | 2019-01-25 | 上海继胜磁性材料有限公司 | Magnetic core and transformer comprising it |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616290A (en) * | 2018-12-10 | 2019-04-12 | 南通市海王电气有限公司 | A kind of magnetic core and the transformer comprising it |
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