CN2681303Y - Single phase AC step transformer - Google Patents
Single phase AC step transformer Download PDFInfo
- Publication number
- CN2681303Y CN2681303Y CN 200320122913 CN200320122913U CN2681303Y CN 2681303 Y CN2681303 Y CN 2681303Y CN 200320122913 CN200320122913 CN 200320122913 CN 200320122913 U CN200320122913 U CN 200320122913U CN 2681303 Y CN2681303 Y CN 2681303Y
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- magnetic core
- transformer
- magnetic
- yoke
- single phase
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Abstract
The utility model discloses a single phase AC step transformer. In the transformer, the magnetic core is designed into a body of which the type is like the Chinese character 'hui'. The center of the body is provided with a dummy club, and the surround of the body is provided with side edges. A groove is formed between the dummy club and the side edges on the surround of the body of which the type is like the Chinese character 'hui'. The primary coil and the secondary coil are stacked in the groove of the magnetic core, and the magnetic yoke is covered on the upper end surface of the magnetic core. So, the primary coil and the secondary coil are enveloped by the magnetic core and the magnetic yoke totally. The magnetic fields generated by the magnetic core and the magnetic yoke do not leak magnetism basically, and the magnetic field on each direction can be used sufficiently. Compared with the traditional AC step transformer, the magnetic loss of the transformer is little, and the magnetic conversion efficiency is improved greatly. Under the same condition, the sectional area of the magnetic core and the coil winding are little, and the temperature rise is low, reducing the manufacture cost of the transformer, reducing the volume and the weigh, and improving the efficiency of the transformer.
Description
Technical field
The utility model relates to AC transformer, more specifically refers to a kind of single phase alternating current (A.C.) step transformer.
Background technology
According to Faraday's electromagnetic induction law as can be known, the magnetic line of force changes at any time in alternating current circuit, can change the size of the height and the electric current of voltage, and the principle people have made range transformer whereby, and be widely used in transmission of electricity, power supply and electricity consumption, and telecommunication, automatic field such as control.Transformer of a great variety, characteristics are also respectively arranged on the structure, but their basic principle is identical or basic identical, traditional transformer mainly is made up of coil and iron core two parts, its structure is nothing more than being several modes such as shell-type, core formula, coil is enclosed within above the magnetic core of a closure, forms the induction mode of a circuit outsourcing magnetic circuit, in magnetic core of transformer, produce induced electromotive force to transmit the work purpose that electric energy reaches transformer.As Fig. 1, Fig. 2 is exactly to have illustrated a kind of structure of ac step-up transformer 10, and 11 is magnetic core among the figure, is shaped as " E " font that an opening makes progress, 12 is yoke, 13,14 be respectively primary and secondary coil, wherein, magnetic core 11 and yoke all are to form by the silicon steel thin slice of many identical cross-sectional shapes is folded mutually.The direction of the magnetic line of force 15 of this transformer is seen shown in Figure 3, because two sides of coil are the outsides that exposes at magnetic core, and the low formation waste of therefore free magnetic line of force utilance, this is a kind of comparatively typical " circuit encirclement magnetic circuit " structure.General step transformer all is to adopt this structure, and as the step transformer of microwave oven, lathe, high-power floodlight light source, its input voltage is 220V, and output voltage is a kilovolt level.The shortcoming of this class step-up transformer is, the part magnetic field of coil both sides can not make full use of, and leakage field is bigger, cause the efficient of transformer low, and the volume of transformer is big, also causes bigger waste on the cost.
Summary of the invention
The purpose of this utility model is the above-mentioned shortcoming that exists at traditional step transformer, proposes a kind of magnetic conversion efficiency height, volume is little, cost is low single phase alternating current (A.C.) step transformer.
To achieve these goals, the utility model adopts following technical scheme, and this single phase alternating current (A.C.) step transformer comprises magnetic core, yoke, primary coil, secondary coil,
It is characterized in that:
Described magnetic core is that a center has boss, " return to type " body of side is set all around, the boss of " returning type " body with form groove all around between the side, upper surface opening, the lower surface of " returning type " body are sealed;
Described primary coil and secondary wire coil are stacked in the groove of the boss of magnetic core and side formation all around;
Described yoke is covered on the upper surface of magnetic core.
The side is for facing directly around " returning type " body of described magnetic core, and four diagonal angles of magnetic core leave symmetric windows;
Described primary coil and secondary coil are square.
Described yoke is one " cross " type.
Described magnetic core forms by vertical silicon steel thin slice is folded mutually;
Described yoke forms by vertical silicon steel thin slice is folded mutually.
The side of " returning type " body of described magnetic core is arc surface, and diametric four diagonal angles that prolong of magnetic core leave symmetric windows;
Described magnetic core boss is cylindric, forms circular groove between the side of magnetic core and the boss;
Described primary coil and secondary coil are rounded.
The shape of described yoke is in the form of annular discs, and it prolongs diametric four diagonal angles and leaves symmetric windows.
Described magnetic core forms by vertical silicon steel thin slice is folded mutually;
Described yoke forms by vertical silicon steel thin slice is folded mutually.
In step transformer of the present utility model, magnetic core is designed to a center to be had boss, " return to type " body of side is set all around, the boss of " return to type " body and form groove all around between the side, primary coil and secondary wire coil just are stacked in the groove of magnetic core, and yoke are covered on the upper surface of magnetic core.Therefore, in interior, there are not the leakage field phenomenon basically in magnetic core, the magnetic field that yoke produced with primary coil and the whole envelopes of secondary coil for magnetic core and yoke, and the magnetic field of all directions all is fully utilized.Compare with traditional step transformer that exchanges, step transformer magnetic loss of the present utility model is few, the magnetic conversion efficiency has obtained improving preferably, under the identical situation that imposes a condition, the sectional area and the coil windings of magnetic core is few, temperature rise is low, thereby reduced the required cost of raw material that transformer is made, reduced volume and weight, and improved the efficient of transformer.
Description of drawings
Fig. 1 is traditional step transformer structural representation.
Fig. 2 divides Jie schematic diagram for traditional step transformer structure.
Fig. 3 is traditional step transformer magnetic line of force direction schematic diagram.
Fig. 4 is the utility model step transformer structural representation.
Fig. 5 divides Jie schematic diagram for the utility model step transformer structure.
Fig. 6, Fig. 7 are respectively the folded mutually schematic diagram of vertical silicon steel thin slice of the utility model yoke, magnetic core.
Fig. 8 the utility model step transformer magnetic line of force direction schematic diagram.
Fig. 9 is another structural representation of the utility model step transformer.
Figure 10 is the magnetic line of force direction schematic diagram of another structure of the utility model step-up transformer.
Embodiment
For further specifying above-mentioned purpose of the present utility model, technical scheme and effect, in conjunction with above-mentioned each figure the utility model is described in detail by the following examples.
See also Fig. 4, shown in Figure 5, single phase alternating current (A.C.) step transformer 20 of the present utility model comprises magnetic core 21, yoke 22, primary coil 23, secondary coil 24.
Described magnetic core 21 is that a center has boss 211, " return to type " body of side 212 is set all around, the boss 211 of " returning type " body with form groove 213 all around between the side 212, upper surface opening, the lower surface of " returning type " body are sealed.
Described primary coil 23 and secondary wire coil 24 are stacked in the groove 213 of the boss of magnetic core and side formation all around.
Described yoke 22 is covered on the upper surface of magnetic core 21.
The side is and faces directly around Fig. 4, the magnetic core 20 illustrated in Figure 5, and four diagonal angles of magnetic core 20 leave symmetric windows 214, and 23 of primary coil 23 that is placed in one and secondary coils are square.
Correspondingly 22 of yokes are one " cross " type, and it just in time can be covered on the magnetic core 21, also leave the breach 221 of symmetry at four diagonal positions of yoke 22, and breach 221 is corresponding with magnetic core 21 breach 214.When making magnetic core 21 and yoke 22, yoke 22 and magnetic core 21 can be divided into the shape of Fig. 6, Fig. 7 respectively, be convenient to technologic processing and making like this, magnetic core 21 forms by some vertical silicon steel thin slices are folded mutually, equally, yoke 22 also forms by some vertical silicon steel thin slices are folded mutually.
As another embodiment, see also shown in Figure 9ly, at this moment, the side of " return to type " body of magnetic core 21 is arc surface, and diametric four diagonal angles that prolong of magnetic core 21 leave symmetric windows.The shape of yoke 22 is in the form of annular discs, and diametric four diagonal angles that prolong of yoke 22 also leave symmetric windows, and this breach is corresponding with the breach on the magnetic core 21.
In this embodiment, magnetic core 21 boss then are cylindric, form circular groove between the side of magnetic core 22 and the boss, because based on the similar structure of the transformer of last embodiment, groove and boss just do not illustrate in Fig. 9.
Correspondingly, 24 of described primary coil 23 and secondary coils are rounded.
When making,
Described magnetic core 21 forms by some vertical silicon steel thin slices are folded mutually;
Described yoke 22 forms by some vertical silicon steel thin slices are folded mutually.
Please join Fig. 8, shown in Figure 10 at last, from this two width of cloth figure as can be seen, the magnetic line of force 25 is not waste basically, and be not fully utilized unlike the magnetic line of force of the dual-side of traditional transformer, obviously, the magnetic line of force of the dual-side of transformer of the present utility model all is fully utilized, and does not have the leakage field phenomenon basically, from faraday's formula V=-N (d Φ/dt)=-NBA ω can prove the conversion efficiency of transformer of the present utility model
In the formula, the voltage of V for producing, N is a coil turn, the magnetic field of d Φ/dt for changing, B is a magnetic field intensity, A is the magnet sectional area,
As can be known: voltage V is directly proportional with the product of magnetic field intensity B, magnet sectional area A, voltage is directly proportional with the number of turn of coil, under the situation of the elementary or secondary voltage of setting, the product of the number of turn of coil and the sectional area of magnetic core is the constant of a design, magnetic field intensity is big more, and the voltage that is produced is big more, and the magnet sectional area is big more, the voltage that is produced is also big more, and the magnetic conversion efficiency is also high more.
Again by consulting following table, be example below, illustrate in order to the microwave oven of transformer of the present utility model and the performance index of utilizing the microwave oven of traditional transformer with Glanz WP900 microwave oven,
| Sequence number | Project | Traditional transformer | New transformer |
| 1 | Rated voltage and rated frequency | 220V～50HZ | 220～50HZ |
| 2 | Rated input power | 1400W | 1400W |
| 3 | Overall dimension | 120×105×87 | 110×110×50 |
| 4 | Coil weight (g) | Elementary: 490g | Elementary: 340g |
| Secondary: 570g | Secondary: 400g | ||
| 5 | Iron core weight (g) | 4000g | 2400g |
| 6 | Total weight (hair) (g) | 5360g | ≤3300g |
By this table the parameter that goes out of example as can be seen, under the constant situation of other performance index that guarantee microwave oven, the weight of coil, iron core and the microwave oven of new microwave oven all reduces greatly, this more can further specify the superiority of the utility model transformer.
Step transformer of the present utility model can be according to above-mentioned thought, the magnetic core and the yoke design of transformer can be taken on a different shape, certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.
Claims (7)
1, a kind of single phase alternating current (A.C.) step transformer, this transformer comprises magnetic core, yoke, primary coil, secondary coil,
It is characterized in that:
Described magnetic core is that a center has boss, " return to type " body of side is set all around, the boss of " returning type " body with form groove all around between the side, upper surface opening, the lower surface of " returning type " body are sealed;
Described primary coil and secondary wire coil are stacked in the groove of the boss of magnetic core and side formation all around;
Described yoke is covered on the upper surface of magnetic core.
2, single phase alternating current (A.C.) step transformer as claimed in claim 1 is characterized in that:
The side is for facing directly around " returning type " body of described magnetic core, and four diagonal angles of magnetic core leave symmetric windows;
Described primary coil and secondary coil are square.
3, single phase alternating current (A.C.) step transformer as claimed in claim 2 is characterized in that: described yoke is one " cross " type.
4, as each described single phase alternating current (A.C.) step transformer of claim 1-3, it is characterized in that:
Described magnetic core forms by vertical silicon steel thin slice is folded mutually;
Described yoke forms by vertical silicon steel thin slice is folded mutually.
5, single phase alternating current (A.C.) step transformer as claimed in claim 1 is characterized in that:
The side of " returning type " body of described magnetic core is arc surface, and diametric four diagonal angles that prolong of magnetic core leave symmetric windows;
Described magnetic core boss is cylindric, forms circular groove between the side of magnetic core and the boss;
Described primary coil and secondary coil are rounded.
6, single phase alternating current (A.C.) step transformer as claimed in claim 5 is characterized in that:
The shape of described yoke is in the form of annular discs, and it prolongs diametric four diagonal angles and leaves symmetric windows.
7, as claim 5 or 6 described single phase alternating current (A.C.) step transformers, it is characterized in that:
Described magnetic core forms by vertical silicon steel thin slice is folded mutually;
Described yoke forms by vertical silicon steel thin slice is folded mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122913 CN2681303Y (en) | 2003-12-29 | 2003-12-29 | Single phase AC step transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122913 CN2681303Y (en) | 2003-12-29 | 2003-12-29 | Single phase AC step transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681303Y true CN2681303Y (en) | 2005-02-23 |
Family
ID=34599772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320122913 Expired - Lifetime CN2681303Y (en) | 2003-12-29 | 2003-12-29 | Single phase AC step transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681303Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599401A (en) * | 2018-07-10 | 2018-09-28 | 中惠创智无线供电技术有限公司 | A kind of track wireless power supply |
-
2003
- 2003-12-29 CN CN 200320122913 patent/CN2681303Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599401A (en) * | 2018-07-10 | 2018-09-28 | 中惠创智无线供电技术有限公司 | A kind of track wireless power supply |
| CN108599401B (en) * | 2018-07-10 | 2024-06-11 | 中惠创智（深圳）无线供电技术有限公司 | Wireless power supply device for track |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090610 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |