WO1999014771A1

WO1999014771A1 - Transforming apparatus

Info

Publication number: WO1999014771A1
Application number: PCT/CN1998/000191
Authority: WO
Inventors: Daxin Xie
Original assignee: Daxin Xie
Priority date: 1997-09-17
Filing date: 1998-09-17
Publication date: 1999-03-25
Also published as: CN1211856A; AU9151198A

Abstract

A transforming apparatus consists of a base, exciting stage (1) and power output stage (2) mounting on the base, and a case, wherein the power output stage is a closed circuit constituted of a soft magnetic core (3) which is barrel-like and opened on one side thereof, a coil (4) which surrounds radially the inside and outside wall of the soft magnetic core (3) and is not closed partly relative to a core of the exciting stage (1), two soft magnetic plates (6), one end of which is connected respectively with upper or lower end of the soft magnetic core (3), and a soft magnetic post (5) whose upper, lower end is conencted respectively with the other end of the two soft magnetic plates (6). The power output stage (2) encircles a soft magnetic post (8) of the exciting stage (1) by the soft magnetic core (3) being barrel-like and opened on one side thereof.

Description

Transformer

The invention relates to a power amplifier comprising an excitation stage and a power output stage. The International Patent Classification number is H01F7/00.

At present, common electromotive potential sources are all kinds of generators except batteries, such as: thermal power, hydraulic power, diesel generators, gasoline generators, etc. They all use the law of electromagnetic induction to convert heat energy, water energy, mechanical energy, etc. into electrical energy. Chinese utility model patent No. 91222375.8 discloses a "high-function pie coil". The high-function pie coil provided by this patent changes the heat dissipation structure of the traditional pie coil with large horizontal oil (gas) channels, and proposes A new type of structure with no or only a few horizontal oil (air) passages, but mainly longitudinal (axial) oil (air) passages for heat dissipation, thereby doubling the heat dissipation of the oil (air) passages and improving The filling factor of the conductive material in the coil cross-section is determined. Chinese utility model patent No. 91222615.3 discloses a "capacitance compensation transformer", which is suitable for power supply occasions of inductive loads. The capacitance compensation transformer provided by the utility model patent includes an iron core, a winding, a casing, etc., and its structural features are: a capacitor that can provide a capacitive output with the winding when in use is also arranged in the casing. Although these two patents have their own characteristics, there is no breakthrough in the shape of the iron core and the winding method of the coil. Therefore, during the energy conversion process, some energy is consumed in other forms, and the energy conversion efficiency is low.

The purpose of the present invention is to solve the deficiencies in the prior art, and propose a power amplifier, which can greatly improve the efficiency of energy conversion by changing the shape of the core and the form of the winding, and is simple to manufacture .

The object of the present invention is achieved by the following technical solutions: A power amplifier is composed of a base, an excitation stage fixed on the base, a power output stage, and a housing, wherein the power output stage is a hollow barrel-shaped soft A magnetic iron core, a coil that surrounds the inner and outer peripheral walls of the soft magnetic iron core in the radial direction and is partially non-closed relative to the iron core of the excitation stage, and two ends of which are respectively connected to the soft magnetic iron core A closed loop is formed by a soft magnetic plate connected to the upper and lower ends and a soft magnetic column whose upper and lower ends are respectively connected to the other end of the two soft magnetic plates. The power output stage passes through the hollow A barrel-shaped soft magnetic iron core sleeve is connected to a soft magnetic column of the excitation stage.

The hollow barrel-shaped soft magnetic iron core with one side open in the above power output stage is made of a plurality of barrel-shaped soft magnetic sheets with one side open. Insulation Materials.

The length of the hollow barrel-shaped soft magnetic iron core with one side opening in the above-mentioned power output stage is slightly shorter than the length of the soft magnetic column of the excitation stage, and its inner diameter must be such that after the coil is wound, it can still It fits smoothly on the soft magnetic column of the excitation pole, and the intervals between the pieces are uniform.

The working principle of the present invention is as follows: The power amplifier of the present invention reforms the traditional winding method of the secondary winding of the transformer, so that the local coil that generates the induced electromotive force in the power output stage is non-closed relative to the iron core of the excitation stage, and at the same time In this power output stage, a completely independent closed soft magnetic iron core loop is added to play the dual roles of magnetic shielding and magnetic flux generation. When the excitation stage of the transformer, that is, the excitation stage of the power amplifier passes through the alternating excitation current to generate magnetic flux, an electromotive force is generated in the local non-closed coil of the power output stage. Because the excitation stage and the power output stage of the power amplifier have their own independent soft magnetic iron core circuits, the alternating magnetic flux generated by the power output stage relative to the excitation stage is non-closed. Therefore, the conversion efficiency of electromagnetic energy can be greatly improved.

Compared with the prior art, the present invention has the following advantages: (1) direct use of electromagnetic energy to obtain electric energy, with low energy consumption; (2) simple structure and easy manufacture; (3) no environmental pollution; (4) wide range of applications.

The above and other objects and advantages of the present invention will be apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. In the attached picture: 191

3

. FIG. 1 is a schematic structural diagram of a power amplifier according to an embodiment of the present invention; FIG. 2 is a top view of an excitation stage iron core circuit in the power amplifier shown in FIG. 1;

Fig. 3 is a structural schematic diagram of an excitation stage iron core circuit in the power amplifier shown in Fig. 1;

Fig. 4 is a top view of the iron core circuit of the power output stage in the power amplifier shown in Fig. 1;

FIG. 5 is a schematic structural diagram of an iron core circuit of a power output stage in the power amplifier shown in FIG. 1 .

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the power amplifier according to a preferred embodiment of the present invention consists of a base (not shown in the figure), an excitation stage 1 fixed on the base, a power output stage 2 and a casing (not shown in the figure ) and so on, wherein the power output stage 2 is composed of a hollow barrel-shaped soft magnetic iron core 3 with one side open, one surrounding the inner and outer peripheral walls of the soft magnetic iron core 3 in the radial direction and relative to the excitation The iron core of stage 1 is the coil 4 of partial non-closed shape, two its one ends are respectively connected with the soft magnetic matter plate 6 of the two ends of soft magnetic matter iron core 3 and one its upper and lower ends are connected with these two soft magnetic matter plates respectively. The other end of the 6 is connected to a closed circuit formed by the soft magnetic column 5, and the power output stage 2 is connected to one side of the excitation stage 1 through the hollow barrel-shaped soft magnetic iron core 3 that is open on one side. On the soft magnetic column 8

The power output stage of the power amplifier of the present invention adopts a structure that is a partial non-closed coil and is attached with a closed soft magnetic iron core circuit with respect to the iron core of the excitation stage, so the manufacturing process of the power amplifier can be divided into: The manufacture of the excitation stage, the manufacture of the power output stage and the connection between the two are fixed in three parts.

1. Manufacture of excitation stage of power amplifier

As shown in Figure 2 and Figure 3, it can be roughly regarded as the manufacturing process of the transformer, the difference is that there is only excitation level 1 in the closed iron core circuit, and its structure is:

R- There are two with the same length, width and height, and the soft magnetic materials used have the same properties Soft ferromagnetic plate7.

Two soft ferromagnetic columns 8 with the same length and cross-sectional area and the same properties of soft magnetic materials used. This column 8 is to form by superimposing with soft ferromagnetic sheet. Its cross-section can be square, rectangular, elliptical, circular and approximately round polygonal, one of which is used to house the excitation coil 9, and the other is used to house the hollow barrel-shaped opening on one side of the power output stage 2. The soft magnetic iron core 3 has a coil 4 that surrounds its inner and outer peripheral walls in the radial direction and is partially non-closed relative to the iron core of the excitation stage 1 .

A set of excitation coils 9 is wound on a soft magnetic column 8, and then the upper and lower ends of the two soft magnetic columns 8 and the two soft magnetic plates 7 are respectively fixed to form a closed magnetic circuit and become the excitation level 1.

2. Manufacture of amplifier power output stage

As shown in Figure 4 and Figure 5, the power output stage 2 has a completely independent closed soft iron magnetic circuit and power output coil. If the difference in shape between it and the soft magnetic column 8 of excitation level 1 is ignored, it can also be approximately regarded as the manufacturing process of a transformer. Like excitation level 1, there is only an excitation winding in the closed core circuit. Its structure is:

It has a hollow barrel-shaped soft magnetic iron core 3 with one side open, which is formed by stacking a plurality of barrel-shaped soft magnetic sheets with one side open, and insulating varnish or other insulating materials are attached between each sheet , because it needs to be placed on a soft magnetic column 8 of the excitation level 1, its length is slightly shorter than the length of the soft magnetic column 8, and the inner diameter of the coil 4 can still be smoothly placed on it after the coil 4 is wound. On the soft magnetic column 8 of the excitation level 1, the intervals between the pieces are uniform. Its outer diameter and cross-sectional area should be determined according to the superposition thickness of the required magnetic shielding soft magnetic sheets and the required magnetic flux size, and its cross-section is approximately horseshoe-shaped or non-closed ring.

A partially non-closed power output coil is wound in the order of the outer wall, opening, inner wall, and opening of the open barrel-shaped soft magnetic iron core 3 in a radial and reciprocating manner, evenly wound on the inner and outer sides of the barrel wall. As shown in Figure 4, from its cross-section, it is a closed coil in which the inner ring is connected with the outer ring. The inner loop coil and the outer loop wire that generate the electromotive force are non-closed relative to the iron core of the excitation stage 1. /N98/00191

5

. A soft magnetic column 5 is formed by stacking a plurality of soft magnetic sheets. Its length is equal to or greater than the length of the open barrel-shaped soft magnetic iron core 3, and its cross-sectional area is equal to the cross-sectional area of the open barrel-shaped soft magnetic iron core 3. The performance of the used soft magnetic sheet is the same as that of the barrel-shaped The performance of the soft magnetic iron core 3 is the same. The cross-section can be square, rectangular, elliptical, circular and approximately circular polygons.

Two soft magnetic plates 6 with the same length, width and height and the same properties of the soft magnetic materials used are used to connect and fix the open barrel-shaped soft magnetic iron core 3 at one end, and the other end is used to connect and fix the soft magnetic column 5 . The size of the connection surface is the same as the end surface of the barrel and column respectively.

The partial non-closed power output coil 4 is wound on the open barrel-shaped soft magnetic iron core 3, and then the upper and lower ends of the open barrel-shaped soft magnetic iron core 3 and the soft magnetic column 5 are fixed on the soft magnetic iron core. On the plate 6, a closed iron core circuit is formed, which becomes the power output stage 2.

If the output power is large, a cooling system can be installed in the open barrel-shaped soft magnetic iron core 3 and the power output coil 4.

3. The connection between the excitation stage and the power output stage is fixed

Connect the power output stage 2 to the soft magnetic column 8 of the excitation stage 1, that is, to set the soft magnetic iron core 3 with the non-closed power output coil 4 on the soft magnetic column 8 of the excitation stage 1. Both the excitation stage 1 and the power output stage 2 form a closed iron core circuit independently. Fix them on a common base, cover the casing, and lead out the wires, which constitute the power amplifier of the present invention. When the excitation stage 1 is supplied with an alternating current, an electromotive force is generated in the non-closed coil 4 of the power output stage 1. If necessary, the soft magnetic column 5 of the power output stage 2 can also become the joint part of the local non-closed coil of the power output stage of the next stage and the open barrel-shaped soft magnetic iron core, and the closed iron core formed by the power output stage 2 The core magnetic circuit can be relatively regarded as the excitation stage of the next power output stage.

Claims

Rights request

1. A power amplifier, consisting of a base, an excitation stage fixed on the base, a power output stage, and a casing, wherein the power output stage is a hollow barrel-shaped soft magnetic iron core with one side open, A coil that surrounds the inner and outer peripheral walls of the soft magnetic iron core in the radial direction and is partially non-closed relative to the iron core of the excitation stage, two coils whose one ends are respectively connected to the upper and lower ends of the soft magnetic iron core A closed loop formed by a soft magnetic plate and a soft magnetic column whose upper and lower ends are respectively connected to the other end of the two soft magnetic plates. The mass iron core sleeve is connected to a soft magnetic mass column of the excitation stage.

2. The power amplifier according to claim 1, characterized in that: the hollow barrel-shaped soft magnetic core with one side opening in the power output stage is made of a plurality of barrel-shaped soft magnetic cores with one side opening The sheets are superimposed, and the sheets are coated with insulating varnish or attached with other insulating materials.

3. The power amplifier according to claim 1, characterized in that: the length of the hollow barrel-shaped soft magnetic iron core open on one side of the power output stage is slightly shorter than the soft magnetic column of the excitation stage The length of the inner diameter must be such that after the coil is wound, it can still be smoothly sleeved on the soft magnetic column of the excitation pole, and the intervals between the pieces are even.

4. The power amplifier according to claim 1, characterized in that: a cooling system is installed in the hollow soft magnetic iron core and the partially open coil in the power output stage.