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Solid high-frequency inducing heater

A high-frequency induction heating, all-solid-state technology, applied in induction heating, induction heating control, instrument cooling, etc., to achieve the effect of high efficiency of the whole machine, high working frequency, and arbitrary selection of heating conditions

Inactive Publication Date: 2005-02-23
杨伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some domestic research institutes and manufacturers, in the research and manufacture of all-solid-state high-frequency induction heating equipment, still use the traditional design thinking method on the basis of the original electron tube high-frequency induction heating equipment technology to make it high-frequency, Large-capacity, high-efficiency, and equipment reliability are subject to many technical limitations, and there are quite a lot of difficulties

Method used

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Experimental program
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Effect test

Embodiment Construction

[0012] Such as figure 1 As shown, the present invention includes a 380V AC power supply, a transformer, a three-phase bridge rectifier circuit, a control circuit, a power synthesis circuit, an LC oscillating circuit, and an induction heater.

[0013] Such as figure 2 As shown, the 380V three-phase AC power supplies power to the pre-driver stage 3, the driver stage 4, and the power amplifier stage 5 respectively from the distribution network through the step-down transformer and the bridge rectifier circuit 12, and supplies power to the control circuit 9 and the frequency control circuit 1 at the same time. Provide power. The frequency control circuit 1 connects the output of the frequency signal required for the operation of the equipment to the input of the buffer stage 2, and the buffer stage 2 connects the output of the adjusted frequency signal power to the input of each power module unit in the pre-driver stage 3, and the pre-stage The driver stage 3 is composed of mul...

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Abstract

The invention consists of AC bridging rectifying circuit, control circuit, power synthesis circuit, LC oscillating circuit, induction heater and cooler. The power synthesis circuit comprises frequency control circuit, buffer stage, preposition driver stage, driver stage and power amplifying stage. The power synthesis circuit outputs the synthesized power to the LC oscillating circuit. The above preposition driver stage, driver stage and amplifying stage is composed of power module units. The output of each power module unit is through power synthesis and circuit synthesis, and then is outputted to LC oscillating circuit. In LC oscillating circuit, the primary coil of the high frequency hardening transformer is connected with oscillating capacitor to form parallel-resonant circuit. the secondary coil of high frequency hardening transformer is connected with induction heater.

Description

(1) Technical field [0001] The invention relates to a high-frequency induction heating device, in particular to an all-solid-state high-frequency induction heating device in the industrial heat treatment industry. (two), background technology [0002] At present, most of the high-frequency induction heating equipment designed and manufactured in my country adopts electronic tube high-frequency induction heating equipment. This kind of equipment not only has high energy loss and low work efficiency (<45%), but also has high working voltage (tens of thousands of volts) and stable load. Poor performance, large footprint, and the need for preheating before use, short service life of electronic tubes, high equipment maintenance costs and other defects. [0003] Since the 1980s, with the development of high-power semiconductor devices and the improvement of microelectronics technology and control technology, developed countries have made great progress in the development of all-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G12B15/00H05B6/06
Inventor 杨伟
Owner 杨伟
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