CN2773871Y

CN2773871Y - High-frequency switching transformer

Info

Publication number: CN2773871Y
Application number: CN 200420095958
Authority: CN
Inventors: 李铭鸿; 赵卫兵
Original assignee: YINENG ELECTRICAL CO Ltd ZHONGSHAN CITY
Current assignee: YINENG ELECTRICAL CO Ltd ZHONGSHAN CITY
Priority date: 2004-12-03
Filing date: 2004-12-03
Publication date: 2006-04-19
Anticipated expiration: 2014-12-03

Abstract

The utility model discloses a high-frequency switching transformer. A primary and a secondary windings of the utility model are formed by winding tubular conductors on a high-frequency magnetic core, wherein the center of the hollow tubular conductors which form the primary and the secondary windings is filled with cooling water or other media. The utility model solve the skin effect and meets the cooling requirements of high-frequency current, and compared with a switching transformer of secondary cooling, the utility model has enhanced heat radiation effect and ensures that the temperature rise of the high-frequency switching transformer is low.

Description

High frequency switch transformer

[technical field]

The utility model relates to the high frequency switch transformer overall structure in the water-cooled high power switching power supply.

[background technology]

So Switching Power Supply is because volume is little, in light weight, the high welcome that more and more is subjected to society of efficient; In recent years, the power output of social demand is increasing, and output current has reached up to ten thousand amperes requirement; Yet the single tube current class of power electronic device does not catch up with demand, and each manufacturer all takes many devices parallel operation, thereby causes the equal flow problem between components and parts, and the heat dissipation problem of machine and reliability are difficult to serial problems such as assurance.

[summary of the invention]

First purpose of the present utility model is to solve the heat dissipation problem of high frequency switch transformer

The high frequency switch transformer of the utility model design, it is characterized in that: the primary and secondary winding of high frequency transformer is formed by tubular shape conductor coiling on high frequency magnetic core.

The utility model is the hollow tubular conductor coiling of the elementary and secondary winding of high frequency switch transformer, the center passes to cooling water or other medium, the kelvin effect and the cooling requirement of high-frequency current have been solved well, switch transformer than the secondary cooling, radiating effect obviously improves, and makes the high frequency switch transformer temperature rise extremely low.

Second purpose of the present utility model is to solve the current-sharing and the heat dissipation problem of high-frequency rectification pipe.

For achieving the above object, such scheme further is improved to: whole secondary winding system is connected in parallel by a plurality of independent secondary winding and forms, the mode evenly coiling on high frequency magnetic core of each independent secondary winding and elementary winding to replace, each high-frequency rectification pipe is that the axle center radially evenly distributes radially with the high frequency switch transformer axis, and connects one to one with independent secondary winding.

For the heat radiation of high-frequency rectification pipe, equal flow problem, it is the center that this structure is taked with the high frequency switch transformer axis, and each high-frequency rectification pipe distributes radially, makes each high-frequency rectification pipe in physical angle heat load unanimity; For solving equal flow problem, secondary employing many windings of symmetry fully is connected in parallel, each winding evenly distributes along high frequency switch transformer magnetic core circumference, primary and secondary winding symmetry alternately, reduced high frequency switch transformer leakage inductance, increased coupling coefficient, improved every electric property of high frequency switch transformer greatly.

This structure makes every high-frequency rectification pipe corresponding continuous with the independent secondary winding of high frequency switch transformer.The machine of different output current grade, its high-frequency rectification pipe is with the number of windings is different separately, the selection of each high-frequency rectification pipe has been become easily, need not specially to screen the forward voltage drop unanimity of each high-frequency rectification pipe, as long as select the high-frequency rectification pipe of same model during production for use, the stepping unanimity just can meet the demands, and has made things convenient for production, and the current-sharing effect is very good.

Further improvement as such scheme, high frequency switch transformer is equipped with radiator as base, high frequency switch transformer and high-frequency rectification pipe thereof are installed in this and form overall structure above radiator, and the position of the inner corresponding high-frequency rectification pipe PN junction of radiator is processed with ring-like cooling bath.

This ring-like cooling bath passes to cooling water or other medium, make the heat of high-frequency rectification pipe be directly conducted to cooling water with the shortest heat conduction distance, solved the heat dissipation problem of high-frequency rectification pipe well, the stability and the reliability of complete machine work have been improved, prolonged its mean time between failures (MBPF), really realized high power switching power supply water-cooled all-sealed structure, operate as normal for a long time still under bad working environment is so be specially adapted to electroplate, the industry of electrolytic types.

[description of drawings]

Fig. 1 is the embodiment floor map of the utility model on the monofocal high frequency transformer;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the embodiment floor map of the utility model on the double-end type high frequency transformer;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is the C-C cutaway view of Fig. 3.

[embodiment]

With reference to figure 1, Fig. 2, a kind of high frequency switch transformer, the elementary winding 2 of high frequency transformer, secondary winding system are formed by hollow copper pipe coiling on high frequency magnetic core 1.Described secondary winding system is connected in parallel by a plurality of independent secondary winding 3 and forms, each independent secondary winding 3 and of mode on high frequency magnetic core 1 the evenly coiling of elementary winding 2 to replace, each high-frequency rectification pipe 4 is that the axle center radially evenly distributes radially with the high frequency switch transformer axis, and connects one to one with independent secondary winding 3.

During use, insert cooling water at the copper pipe mouth 31 of forming secondary winding and the copper pipe end of forming elementary winding, solved the kelvin effect and the cooling requirement of high-frequency current well, than the switch transformer of secondary cooling, radiating effect obviously improves, and makes the high frequency switch transformer temperature rise extremely low.

High frequency switch transformer is equipped with radiator 5 as base, high frequency switch transformer and high-frequency rectification pipe 4 thereof are installed in this and form overall structure above radiator 5, the position of radiator 5 inner corresponding high-frequency rectification pipe PN junctions is processed with ring-like cooling bath 6, and this cooling bath 6 has turnover water nozzle 7.

This ring-like cooling bath 6 passes to cooling water, makes the heat of high-frequency rectification pipe be directly conducted to cooling water with the shortest heat conduction distance, has solved the heat dissipation problem of high-frequency rectification pipe well, has improved the stability and the reliability of complete machine work.

With reference to figure 3, Fig. 4 and Fig. 5, be a kind of double-end type high frequency transformer, have described technical characterictic of a last embodiment and effect.

Claims

1. high frequency switch transformer, it is characterized in that: the primary and secondary winding of high frequency transformer is formed by tubular shape conductor coiling on high frequency magnetic core.

2. high frequency switch transformer according to claim 1 is characterized in that: whole secondary winding system is connected in parallel by a plurality of independent secondary winding and forms, the mode coiling on high frequency magnetic core to replace of each independent secondary winding and elementary winding.

3. high frequency switch transformer according to claim 2 is characterized in that: the mode evenly coiling on high frequency magnetic core to replace of each independent secondary winding and elementary winding.

4. according to claim 2 or 3 described high frequency switch transformers, it is characterized in that: this high frequency switch transformer is provided with the high-frequency rectification pipe, each high-frequency rectification pipe is that the axle center radially evenly distributes radially with the high frequency switch transformer axis, and connects one to one with independent secondary winding.

5. high frequency switch transformer according to claim 4 is characterized in that: high frequency switch transformer is equipped with radiator as base, and the position of the inner corresponding high-frequency rectification pipe PN junction of radiator is processed with ring-like cooling bath.