CN209591745U

CN209591745U - The assembling iron core of high frequency transformer

Info

Publication number: CN209591745U
Application number: CN201920563295.1U
Authority: CN
Inventors: 何海峰
Original assignee: TAICANG YOUKAI ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: TAICANG YOUKAI ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2019-11-05
Anticipated expiration: 2029-04-24

Abstract

The utility model discloses a kind of assembling iron cores of high frequency transformer, the high-frequency electronic transformer includes skeleton, the skeleton has the iron core chamber passed through for iron core, coil windings are wound in the skeleton, the iron core includes two core bodies mutually spliced, the core body is " mountain " font, the core body includes main magnetic circuit core, first time magnetic circuit core and second of magnetic circuit core, there is boss between the splicing end face of the main magnetic circuit core of two core bodies, the area of section of the boss is less than the area of section of the main magnetic circuit core, there is magnetic air gap between the splicing end face of the main magnetic circuit core, the end face of the splicing of the first time magnetic circuit core and second of magnetic circuit core is inclined surface.The magnetic flux of the adjustable main magnetic circuit in-core of the iron core of the utility model, expands the power bracket of high-frequency electronic transformer, can greatly reduce the cost of manufacture and use.

Description

The assembling iron core of high frequency transformer

Technical field

The utility model belongs to transformer technology field, more particularly to a kind of high-frequency electronic transformer.

Background technique

Transformer (Transformer) is the device for changing alternating voltage using the principle of electromagnetic induction, main member It is primary coil, secondary coil and iron core (magnetic core).Major function has: voltage transformation, impedance transformation, is isolated, is steady at current transformation Press (magnetic saturation transformer) etc..Can be divided into, according to use: (electric furnace becomes, rectification becomes, power frequency examination for power transformer and special transformer Test transformer, pressure regulator, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformation Device, electronic transformer, reactor, mutual inductor etc.)；

High-frequency electronic transformer accurately defines, and is exactly the high electronic transformer of working frequency, and general work frequency is higher than 20kHz, transformer are made of iron core (or magnetic core) and coil, and there are two coils or more than two windings, wherein connecing power supply Winding is primary coil, remaining winding is secondary coil.It can convert alternating voltage, electric current and impedance；

The design magnetic flux of the iron core of current high frequency transformer is fixed, in many application scenarios, very much The power demand of transformer is similar, and just needs to prepare completely new transformer at this time, including skeleton and iron core require weight New die sinking manufacture, cost is too high, causes to waste.

Utility model content

The utility model is mainly solving the technical problems that provide a kind of assembling iron core of high frequency transformer, first time magnetic The end face of the splicing of road core and second of magnetic circuit core is inclined surface, can adjust the big of the magnetic air gap by the inclined surface Small, in conjunction with the protrusion of main magnetic circuit core end face, the magnetic flux of the adjustable main magnetic circuit in-core expands high-frequency electronic transformer Power bracket can greatly reduce the cost of manufacture and use.

In order to solve the above technical problems, the technical solution that the utility model uses is: a kind of group of high frequency transformer Iron core is closed, the high-frequency electronic transformer includes skeleton, and the skeleton has the iron core chamber passed through for iron core, coil windings coiling In the skeleton, the iron core includes two core bodies mutually spliced, and the core body is " mountain " font, the iron core Ontology includes main magnetic circuit core, first time magnetic circuit core and second of magnetic circuit core；

There is boss, the section face of the boss between the splicing end face of the main magnetic circuit core of two core bodies Product is less than the area of section of the main magnetic circuit core, has magnetic air gap between the splicing end face of the main magnetic circuit core；

The end face of the splicing of the first time magnetic circuit core and second of magnetic circuit core is inclined surface, passes through the inclined surface The size of the magnetic air gap can be adjusted, so as to adjust the magnetic flux of the main magnetic circuit in-core.

Further say, the area of section of the main magnetic circuit core be equal to the area of section of the first time magnetic circuit core with it is described The sum of the area of section of second of magnetic circuit core.

It further says, the section of the main magnetic circuit core, the first time magnetic circuit core and second of magnetic circuit core is all Rectangle.

It further says, the section of the main magnetic circuit core is square.

It further says, the inclined direction one of the inclined surface of the first time magnetic circuit core and second of magnetic circuit core It causes.

It further says, the tilt angle of the inclined surface is 30 ° -45 °.

It further says, the section of the boss is round or rectangle.

It further says, the area ratio of the area of section of the area in the section of the boss and the main magnetic circuit core is 1/2 Or 3/5.

It further says, the width of the magnetic air gap is 0.3mm-0.55mm.

It further says, the iron core is manganese-zinc ferrite iron core.

The utility model has the beneficial effects that

The transformer combination iron core of the utility model, the end face of the splicing of first time magnetic circuit core and second of magnetic circuit core are Inclined surface can adjust the splicing size of two core bodies, by the contact performance of the inclined surface so as to adjust master The size of the magnetic air gap of magnetic circuit core, in conjunction with the protrusion of main magnetic circuit core end face, the magnetic flux of the adjustable main magnetic circuit in-core Amount, and then change the performance number of high-frequency electronic transformer, and expand the power bracket of high-frequency electronic transformer, it can greatly drop The cost of low manufacture and use；

First time magnetic circuit core is consistent with the inclined direction of the inclined surface of second of magnetic circuit core, makes the first magnetic circuit core and The shape and structure of two magnetic circuit cores is identical, reduces manufacturing cost.

Detailed description of the invention

Fig. 1 is the overall structure diagram (decomposition) of the transformer of the utility model；

Fig. 2 is the structural schematic diagram (decomposition) of the iron core of the utility model；

Fig. 3 is the structural schematic diagram of the iron core of the utility model；

Fig. 4 is the main view (decomposition) of the iron core of the utility model；

Fig. 5 is the main view of the iron core of the utility model；

Each section label is as follows in attached drawing:

Skeleton 1, iron core chamber 11；

Iron core 2, core body 21, main magnetic circuit core 211, boss 2111, first time magnetic circuit core 212, inclined surface 2121, second Secondary magnetic circuit core 213；

Coil windings 3；

The width W of magnetic air gap 4, inclination angle alpha and magnetic air gap.

Specific embodiment

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear Define.

Embodiment: a kind of assembling iron core of high frequency transformer, as shown in fig. 1 to fig. 4: the high-frequency electronic transformer includes Skeleton 1, the skeleton have the iron core chamber 11 passed through for iron core 2, and coil windings 3 are wound in the skeleton, and the iron core includes Two core bodies 21 mutually spliced；

The core body is " mountain " font, and the core body includes main magnetic circuit core 211,212 and of first time magnetic circuit core Second of magnetic circuit core 213；

There is boss 2111, the boss is cut between the splicing end face of the main magnetic circuit core of two core bodies Face area is less than the area of section of the main magnetic circuit core, has magnetic air gap 4 between the splicing end face of the main magnetic circuit core；

The end face of the splicing of the first time magnetic circuit core and second of magnetic circuit core is inclined surface 2121, is inclined by described Inclined-plane can adjust the size of the magnetic air gap, so as to adjust the magnetic flux of the main magnetic circuit in-core.

In the present embodiment, preferably, the area of section of the main magnetic circuit core is equal to the first time magnetic circuit core The sum of the area of section of area of section and second of magnetic circuit core.

Preferred embodiment is that the section of the main magnetic circuit core, the first time magnetic circuit core and second of magnetic circuit core is all Rectangle, but not limited to this, or it is round.

The section of the main magnetic circuit core is square.

In the present embodiment, the inclined direction one of the inclined surface of the first time magnetic circuit core and second of magnetic circuit core It causes, direction is unanimously, without producing two different core bodies, to save cost to keep two core body structures the same.

The inclination angle alpha of the inclined surface is 30 ° -45 °.

Preferably, the inclination angle alpha is 45 ° for this implementation.

The section of the boss is round or rectangle.

The area ratio of the area of section of the area in the section of the boss and the main magnetic circuit core is 1/2 or 3/5；

Preferably, the area ratio is 1/2 for this implementation.

The width W of the magnetic air gap is 0.3mm-0.55mm.Range i.e. two core body of the width W splices ruler Very little adjustable range.

The iron core is manganese-zinc ferrite iron core.

The working principle of the utility model is as follows:

The end face of the splicing of the first time magnetic circuit core and second of magnetic circuit core of iron core is inclined surface, two core body splicings When, the size by changing pressure force can adjust the splicing size of two core bodies, so as to adjust main magnetic circuit core The size of magnetic air gap, in conjunction with the protrusion of main magnetic circuit core end face, the magnetic flux of the adjustable main magnetic circuit in-core, Jin Ergai Become the performance number of high-frequency electronic transformer；

Specifically, as shown in Figure 5: high frequency transformer has first time magnetic circuit core and second of magnetic circuit core, therefore transformer There are two magnetic circuit, including the first branch magnetic circuit A1 and the second branch magnetic circuit A2, branch's magnetic circuits to guarantee the same of transformer efficiency for tool When, vortex can be reduced, effectively prevent transformer from burning, main magnetic core has magnetic air gap, and magnetic air gap generates leakage magnetic circuit B, By changing the magnetic flux of the big minor adjustment main magnetic core of magnetic air gap, and then change the performance number of high-frequency electronic transformer, and expands The power bracket of high-frequency electronic transformer can greatly reduce the cost of manufacture and use.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be applied directly or indirectly in other Technical field is also included in the patent protection scope of the utility model.

Claims

1. a kind of assembling iron core of high frequency transformer, it is characterised in that: the high frequency transformer includes skeleton (1), the skeleton With the iron core chamber (11) passed through for iron core (2), coil windings (3) are wound in the skeleton, and the iron core includes two mutual The core body (21) of splicing, the core body are " mountain " font, and the core body includes main magnetic circuit core (211), first Secondary magnetic circuit core (212) and second of magnetic circuit core (213)；

There are boss (2111) between the splicing end face of the main magnetic circuit core of two core bodies, the section of the boss Area is less than the area of section of the main magnetic circuit core, has magnetic air gap (4) between the splicing end face of the main magnetic circuit core；

The end face of the splicing of the first time magnetic circuit core and second of magnetic circuit core is inclined surface (2121), passes through the inclination Face can adjust the size of the magnetic air gap, so as to adjust the magnetic flux of the main magnetic circuit in-core.

2. the assembling iron core of high frequency transformer according to claim 1, it is characterised in that: the section face of the main magnetic circuit core Product is equal to the area of section of the first time magnetic circuit core and the sum of the area of section of second of magnetic circuit core.

3. the assembling iron core of high frequency transformer according to claim 2, it is characterised in that: the main magnetic circuit core, described The section of magnetic circuit core and second of magnetic circuit core is all rectangle.

4. the assembling iron core of high frequency transformer according to claim 3, it is characterised in that: the section of the main magnetic circuit core is Square.

5. the assembling iron core of high frequency transformer according to claim 1, it is characterised in that: the first time magnetic circuit core and institute The inclined direction for stating the inclined surface of second of magnetic circuit core is consistent.

6. the assembling iron core of high frequency transformer according to claim 1 or 5, it is characterised in that: the inclination of the inclined surface Angle (α) is 30 ° -45 °.

7. the assembling iron core of high frequency transformer according to claim 1, it is characterised in that: the section of the boss is circle Or rectangle.

8. the assembling iron core of high frequency transformer according to claim 1 or claim 7, it is characterised in that: the section of the boss The area ratio of the area of section of area and the main magnetic circuit core is 1/2 or 3/5.

9. the assembling iron core of high frequency transformer according to claim 1, it is characterised in that: the width of the magnetic air gap It (W) is 0.3mm-0.55mm.

10. the assembling iron core of high frequency transformer according to claim 1, it is characterised in that: the iron core is manganese-zinc ferrite Body iron core.