CN201789648U

CN201789648U - Electromagnetic heating device

Info

Publication number: CN201789648U
Application number: CN2009201522588U
Authority: CN
Inventors: 吴汉威
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-29
Filing date: 2009-04-29
Publication date: 2011-04-06
Anticipated expiration: 2019-04-29

Abstract

An electromagnetic heating device mainly comprises a generator and an electromagnetic coil (an electromagnetic board or an electromagnetic heating stick). As the electromagnetic coil is formed by winding a high-temperature insulated cable and is provided with two 1500 V voltage-resistant high-temperature insulation boards, the 1500 V voltage-resistant high-temperature insulation boards serve as an inner layer and an outer layer, the electromagnetic heating device does not generate heat energy and only generates an alternating magnetic field, and a metal body to be heated is heated through magnetic field induction.

Description

A kind of electromagnetic heater

Technical field

The utility model is a kind of electromagnetic heater, specifically belongs to electromagnetic heater.

Technical background

At present, known heater is for a long time and makes resistance heating to reach heating purposes to its energising, because resistance through long-time heating, resistance heating circle insulation ageing problem can occur and cause that there are potential safety hazard in electric leakage and self temperature height when operating personnel are worked.The resistance heating efficiency ratio is lower, thereby causes the significant wastage of electric energy, has strengthened the production cost of enterprise simultaneously.

Summary of the invention

In order to overcome the deficiency that existing heater exists, the utility model provides a kind of electromagnetic heater that passes through, effective saves energy not only, and avoided traditional long-time heating of resistance heating circle to cause insulation ageing problem and cause electric leakage and there is potential safety hazard when operating personnel are worked in self temperature height.

Realize that the present technology contents of the utility model is: this heater mainly is made up of generator and solenoid (magnetic board or electromagnetic heating rod).Because the high temperature insulation panel that solenoid adopts high-temperature insulation cable winding ectonexine to be withstand voltage 1500V forms, and itself does not produce high heat energy, only produces alternating magnetic field, heating object is subjected to the magnetic field induction heating.220V or 380V AC power are input to generator, through behind the rectifying and wave-filtering, by rectification circuit the alternating current of 50HZ is become the 315V direct current, transfer direct current to high-frequency electrical that frequency is 20-35KHZ by control circuit again, even output to coil by power output part, the high-frequency current that changes produces the superaudio change that changes at a high speed simultaneously by coil and hands over magnetic field at a high speed, and this Supersonic becomes the magnetic line of force of handing over magnetic field to produce and affacts by being heated on the metallic object that metal material is made after being incubated silk floss.This moment, this metal object produced countless little eddy current in metal inside after sensing the superaudio alternating magnetic field, made metal heating at a high speed voluntarily itself.

The utility model beneficial effect is that the heating efficiency ratio is up to more than 85%, than the energy-conservation 30%-60% of traditional resistance heating; Avoid traditional long-time heating of resistance heating circle to cause insulation ageing problem and cause that there are potential safety hazard in electric leakage and self temperature height when operating personnel are worked simultaneously, and helped reducing the work room temperature.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is an electromagnetism heating schematic diagram

Fig. 2 is the electromagnetic heater fundamental diagram

Fig. 3: concrete enforcement schematic diagram

Referring to Fig. 3, this embodiment is by the following technical solutions: the high temperature insulation panel 2 that solenoid adopts high-temperature insulation cable winding ectonexine to be withstand voltage 1500V forms, itself do not produce high heat energy, only produce alternating magnetic field, be heated metallic object 4 and be subjected to the magnetic field induction heating.Input 220V or 380V AC power are to generator 9, through behind the rectifying and wave-filtering, by rectification circuit the alternating current of 50HZ is become the 315V direct current, rectifying and wave-filtering is partly gone back the voltage supply oscillating part that output dc voltage is 18V simultaneously, transfer direct current to high-frequency electrical that frequency is 20-35KHZ by control circuit again, be connected to coil 6 by power output part, the high-frequency current of variation becomes friendship magnetic field by the superaudio that coil 6 produces variation at a high speed simultaneously at a high speed, and this Supersonic becomes hands over the magnetic line of force 3 of magnetic field generation to affact by being heated on the metallic object 4 that metal material is made after being incubated continuous 7.Be heated metallic object 4 and produce countless eddy current 5 in metal inside this moment after sensing the superaudio alternating magnetic field, makes metal heating at a high speed voluntarily itself.The peripheral vertical distribution of magnetic stripe 8 wound coils, main effect is the shielded coil external magnetic line of force, makes that the outer metal object of solenoid is unlikely to be sensed the superaudio alternating magnetic field and generate heat, and strengthens the alternating magnetic field intensity of solenoid inside.

Claims

1. electromagnetic heater, mainly comprise generator and solenoid, wherein generator comprises the equivalent electric circuit of oscillator, filter, rectifier, switching device and electric arc, it is characterized in that the high temperature insulation panel that solenoid adopts high-temperature insulation cable winding ectonexine to be withstand voltage 1500V forms.