JP3127741U - High performance power supply transformer - Google Patents

Abstract

An improved high performance power supply transformer is provided for an iron core which is a closed annular member made by continuous entrainment of silicon steel sheets.
After insulation treatment with a heat-shrinkable sleeve on the iron core, it is completed by sintering and fixing in order to maintain directivity, the primary coil is formed by winding the wire in an annular shape, and then heat Wrapped by secondary insulation treatment with shrinkable trousers. The secondary coil is formed by winding a wire in an annular shape and is wrapped by a tertiary insulation treatment using a heat-shrinkable sleeve. The terminal input wires of the primary and secondary coil pairs extend outward. An iron core in the form of a closed annular member whose magnetic circuit is a closed magnetic circuit. Its magnetizing energy and iron core consumption is 25% less than that of the general stack type, greatly increasing the efficiency of power supply.
[Selection] Figure 1

Description

  The present invention relates to a high performance power supply transformer and in particular to a power supply transformer which is a closed annular member whose iron core is made by a continuous winding of silicon steel sheet. By using production techniques in the present invention, the present invention can be applied by a low power miniaturized transformer of less than 50 W made from an annular linear member.

In the current design of a typical linear power supply transformer, the iron core is formed by punching a large silicon steel sheet into a sheet in the form of “E” or “I”;
These sheets are then stacked for assembly. When punching for such iron cores in common transformers, the directivity of the silicon steel sheet will be damaged;
Also, at the completion of punching, the gap between every two adjacent “E” or “I” sheets will cause more energy and iron core consumption to magnetize. Also, the efficiency of power supply will be reduced.

And more and more, due to the fact that the magnetic conductivity of common power supply transformers can reach 1.2-1.4T, high specification primary and secondary copper wire coils made by winding must be adopted. This, in turn, results in a full weight and volume full power supply transformer and thus inconvenience of use.
Known annular transformers can only be applied to large-scale transformers due to their production procedure problems. Such large transformers use Mylar plastic tape to wrap and isolate for insulation, and then the coils are wound. While customarily wrapped with Mylar (trade name) plastic tape and coil windings, very large personnel are required; this is time consuming, inefficient and produces a miniaturized power supply transformer It is not an economy to be used to do. Thus, improvements are needed.

  In view of the above deficiencies that existed in typical transformers made with iron core stack types, the present invention provides high performance to power supply transformers.

It is mainly improved with its iron core part being a closed annular member made from silicon steel sheet by continuous winding. The iron core is then completed by being sintered and fixed in order to maintain its directivity. After primary insulation treatment with a heat-shrinkable sleeve on the iron core, the primary coil is formed by winding the wire in an annular shape;
Thereafter, the primary coil is wrapped by a secondary insulation treatment with a heat-shrinkable sleeve. Thereafter, the secondary coil is formed by winding the wire in an annular shape. Also, the secondary coil is encased by a tertiary insulation treatment with a heat-shrinkable sleeve;
Further, like the pair of end output wires of the secondary coil, the pair of terminal input wires of the primary coil is an expansion mode that forms an annular transformer.

The annular transformer of the present invention is installed in the housing; while the output wire is electronically connected to the transmission line of the electronic product, the transformer input wire is outside the housing to obtain power. Connected to the plug. The housing can be targeted to be a computer mouse.
The high performance power supply transformer of the present invention has its iron core in the form of a closed annular member, and its magnetic circuit is essentially a closed magnetic circuit, thereby magnetizing its energy and iron core consumption. Is 25% less than that of a typical stack-type iron core, which greatly increases the efficiency of power supply. In addition, the iron core is a closed annular member with no air gap, its stacking element is up to 95%, the magnetic conductivity of the iron core is 1.5-1.8T, low specification primary and secondary made by windings. It can be adapted to secondary copper coils, which results in a significant reduction in the volume and weight of the entire power supply transformer.

The high performance power supply transformer of the present invention can be an AC to AC transformer with a frequency of 50 or 60 MHz; it can also be an AC to DC transformer, in which case the output voltage is changed from AC to DC Therefore, it is necessary to simply add a circuit for rectifying and filtering to the output terminal of the secondary coil.
The high performance power supply transformer of the present invention can have its input voltage and its output voltage, which can be varied as desired;
The power can also be changed by the performance of the size of the annular core and copper wire in the design.

The coil in the high-performance power supply transformer of the present invention is directly wound around an insulated iron core and does not require fixing with a spool (the coil of a general power supply transformer is installed on the iron core) Must be wrapped around a spool before being
The high performance power supply transformer of the present invention is such that the iron core is wrapped in PVC heat shrinkable trowel, fixed with a tool and then heated, and the PVC member is completely bonded to the iron core, Insulate the surface of

  After the primary coil of the high performance power supply transformer of the present invention is formed by being wound uniformly by use of an annular winding machine, it is wrapped and insulated with PVC heat shrinkable jacket, the secondary coil is It is formed by a heat-shrinkable sleeve and is wound around an insulating film. This is different from the general mode of insulation by plastic tape of the mirror (trade name).

The magnetizing current of the high performance power supply transformer of the present invention is zero at the rated input voltage and without a linear power source load;
On the other hand, the magnetizing current in the case of no load at the rated input voltage of a general linear power source is greater than zero. Still further, the linear power source provided by the present invention can still work normally after being operated at full load condition at 125% input voltage for 24 hours;
On the other hand, a typical linear power source cannot work normally after being operated at full load with an input voltage of 125% for 24 hours.

  On the other hand, a typical linear power source cannot work normally after being operated at full load with an input voltage of 125% for 24 hours. The efficiency of the high performance power supply transformer of the present invention at rated input voltage and rated output power is greater than 70% (the efficiency of a typical linear power source is less than 60%).

  The surface temperature of the high performance power supply transformer of the present invention after operating at full load at 125% input voltage does not rise above 40 ° C (for a typical linear power source, it will exceed 75 ° C) Temperature rise).

The power supply transformer of the present invention can be used as a transformer installed directly on an electric circuit board, and can also be used as a rectifier of a fluorescent lamp. .
Since the iron core of the power supply transformer of the present invention is formed by winding a short silicon steel plate, unlike a general method, no cutting punch is required, and no waste member is produced in production;
Further, the steel plate can be reused as a remanufactured member, and thus is effective for environmental conservation.
The invention will become apparent after reading the detailed description of preferred embodiments thereof with reference to the accompanying drawings.

  1 and 2, in the high-performance power supply transformer of the present invention, an annular transformer 10 is installed in a housing 20 including an upper cover 21 and a lower cover 22. A plug 221 is installed at the bottom of the lower cover 22; a power source line 23 is extended from the housing 20 for connection to an electronic device.

3A to 3E show the production process of the annular transformer 10, and FIG. 3A shows the iron core 11 of the present invention. In the forming process, the silicon steel plate is cut in parallel, and the cut silicon steel plate Is continuously wound by using an automatic winding machine to form a closed annular member;
The closed annular member is sintered in nitrogen gas, slowly cooled in a tunnel, immersed in a vacuum immersion paint and baked to fix its shape, thereby substantially directing the member Sex can be maintained.

In FIG. 3B, it is revealed that the iron core 11 is primarily treated by an insulation treatment, and the PVC heat shrinkable jacket is used to form the primary insulating film 12 by a heat shrink method in order to wrap the iron core 11. .
When the primary insulation process is complete, the wire is threaded into an annular shape to form the primary coil 13 as shown in FIG. 3C;
When the primary coil 13 is completed, a secondary insulation process is performed, and another PVC heat shrink jacket is used to wrap the primary coil 13 of the complete annular transformer 10 as shown in FIG. 3D. And used to form the secondary insulating film 14.

Then, as shown in FIG. 3E, a secondary wire winding is performed. Upon completion of the wire winding, a secondary coil 15 is formed;
Next, a tertiary insulation treatment is performed, and another PVC heat-shrink sleeve is connected to the pair of input wires 131 at the end of the primary coil 13 and the pair of ends of the secondary coil 15 left to be exposed. It is used to form the tertiary insulating coating 16 by a heat shrink method for wrapping with the output wire 151. See also the annular transformer 10 of FIG.

The annular transformer 10 of the present invention is installed in the housing 20;
The transformer input wire 131 is connected to the plug 221 outside the housing 20 to obtain power, while the output wire 151 is electrically connected to the power transmission line 23 of the electronic product. The housing 20 can be a computer mouse.

  The high performance power supply transformer of the present invention has an iron core 11 which is in the form of a closed annular member, whose magnetic circuit is essentially a closed magnetic circuit, thereby magnetizing its energy and the iron core. Consumption is 25% less than that of a typical stack-type iron core, which greatly increases the efficiency of power supply. Furthermore, the iron core 11 is a closed annular member with no air gap, its stacking element is up to 95%, the magnetic conductivity of the iron core 11 can reach 1.5-1.8T, and is made by winding The low specification primary and secondary copper wires 13 and 15 met, which results in a significant reduction in the volume and weight of the total power supply transformer.

The high performance power supply transformer of the present invention can be an AC to AC transformer with a frequency of 50 or 60 MHz;
It can also be an AC to DC transformer, which simply requires adding a rectifying and filtering circuit to the output terminal of the secondary coil to change the output voltage from AC to DC.
The high performance power supply transformer of the present invention can have its input voltage and its output voltage, which can be varied as desired;
The electric power can also be changed by the performance of the size of the annular iron core 11 and the copper wire in the design.

FIG. 4 is a chart showing details of the electrical features of the present invention.
The following is a description of other features of the invention:
The coils 13 and 15 in the high-performance power supply transformer of the present invention are wound directly around the insulated iron core 11, and do not need to be fixed with a bobbin (a coil of a general power supply transformer is It must be wrapped around a spool before being installed on the iron core).
The iron core 11 is wrapped with a primary insulation coating 12 made of PVC heat-shrinkable sheath, and fixed with a tool. After that, the high performance power supply transformer of the present invention is heated and the surface of the insulation iron core 11 is heated. In order to achieve this, the PVC member is completely bonded to the iron core 11.

  After the primary coil 13 of the high performance power supply transformer of the present invention was formed by being uniformly wound by use of an annular winding machine, it was wrapped and insulated with a PVC heat shrinkable trouser The secondary coil 15 is wound around the insulating film 14 in contrast. A typical linear power source is insulated with a mirror (trade name) plastic tape.

The magnetizing current of the high performance power supply transformer of the present invention is zero at the rated input voltage and without a linear power source load;
On the other hand, the magnetizing current is greater than zero without the load of a typical linear power source at the rated input voltage. Still further, the linear power source provided by the present invention can still work normally after being operated at full load condition at 125% input voltage for 24 hours;
On the other hand, a typical linear power source cannot work normally after being operated at full load with an input voltage of 125% for 24 hours.

The efficiency of the high performance power supply transformer of the present invention at the rated input voltage and the rated output power (FIG. 4) is greater than 70% (the efficiency of a typical linear power source is less than 60%).
The surface temperature of the high performance power supply transformer of the present invention after operating at full load with 125% input voltage does not rise above 40 ° C (for a typical linear power source it is above 75 ° C) Temperature rises).

  The total weight of the high performance power supply transformer of the present invention does not exceed 300 g (eg, at 15 W, a typical linear power source is greater than 500 g).

Also, as shown in FIG. 5, the annular transformer 10 of the present invention can be used as a transformer installed directly in the electric circuit board 30 and can be used as a rectifier of a fluorescent lamp. For this reason, the scope of application of the power supply transformer is not limited in the present invention.
The invention is to be construed as including all modifications and variations that fall within the scope of the appended claims.

FIG. 3 is a perspective view showing the appearance of a preferred embodiment of the present invention; Is a perspective view of the anatomy of the present invention; FIG. 3 is a perspective schematic diagram illustrating the process of production of the present invention; FIG. 3 is a perspective schematic diagram illustrating the process of production of the present invention; FIG. 3 is a perspective schematic diagram illustrating the process of production of the present invention; FIG. 3 is a perspective schematic diagram illustrating the process of production of the present invention; FIG. 3 is a perspective schematic diagram illustrating the process of production of the present invention; FIG. 3 is a chart showing a specification of the electrical features of the present invention; FIG. 2 is a perspective schematic diagram showing the application of the annular transformer of the present invention installed directly on an electrical circuit board.

Explanation of symbols

10: Transformer
11: Iron core
12: Primary insulation coating
13: Coil
13: Primary coil
13: Primary copper wire
13: Primary coil
131: Input wire
14: Secondary insulation coating
15: Coil
15: Secondary coil
15: Secondary copper wire
151: Output wire
16: Tertiary insulation coating
20: Housing
21: Top cover
22: Bottom cover
221: Plug
23: Power source line
23: Transmission line
30: Electric circuit board

Claims (9)

High performance transformer including:
A closed annular member made from a silicon steel plate by continuous entrainment and then completed by sintering and fixing to maintain its directivity;
A primary insulation coating formed on the iron core after the primary insulation treatment with a heat-shrinkable sleeve;
A primary coil formed by winding a wire in an annular shape on the primary insulation coating, and then encased by a secondary insulation coating formed by a secondary insulation treatment in a heat-shrinkable sleeve; and A secondary coil formed by wrapping a wire in an annular shape on a secondary insulation coating and then encased by a tertiary insulation coating formed by a tertiary insulation treatment in a heat-shrinkable jacket;
The tertiary insulation coating having a pair of terminal input wires of the primary coil as well as a pair of terminal output wires of the secondary coil extending outward;
The input wire for the primary coil input power supply and the output wire for the output voltage-change power supply for the secondary coil, and the annular transformer formed thereby. In the forming process of the iron core, the silicon steel sheet is cut in parallel, and the cut silicon steel sheet is continuously wound by using an automatic winding machine to form a closed annular member;
The closed annular member is sintered in nitrogen gas, slowly cooled in a tunnel, immersed in a vacuum soaking the paint, and baked to fix its shape; this maintains directionality;
The high-performance transformer according to claim 1. The high-performance transformer according to claim 1, wherein the magnetic conductivity of the iron core reaches 1.5 to 1.8T. The transformer is a power supply transformer, and the annular transformer is installed in a housing;
The input wire is connected to a plug on the outside of the housing to obtain power, while the output wire is electronically connected to a transmission line of an electronic product;
The high-performance transformer according to claim 1. The high-performance transformer according to claim 4, wherein the housing is a mouse used in a computer. The high-performance transformer according to claim 1, wherein a rectification filtering circuit is provided on the output terminal of the secondary coil to change the output voltage from AC to DC. The high performance transformer according to claim 1, wherein output power of the transformer is changed according to performance of the annular iron core and the copper wire. The high-performance transformer according to claim 1, wherein a PVC heat-shrinkable jacket is used and the insulating film is formed by a heat-shrink method. The high-performance transformer according to claim 1, wherein the iron core of the transformer is formed by winding a short silicon steel plate.

Images