CN202818656U - Multistratum control type electromagnetic induction heating device - Google Patents
Multistratum control type electromagnetic induction heating device Download PDFInfo
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- CN202818656U CN202818656U CN 201220496497 CN201220496497U CN202818656U CN 202818656 U CN202818656 U CN 202818656U CN 201220496497 CN201220496497 CN 201220496497 CN 201220496497 U CN201220496497 U CN 201220496497U CN 202818656 U CN202818656 U CN 202818656U
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- 238000010438 heat treatment Methods 0.000 title abstract description 67
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- 230000001429 stepping effect Effects 0.000 claims 5
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- 230000004907 flux Effects 0.000 description 11
- 238000001746 injection moulding Methods 0.000 description 11
- 238000002955 isolation Methods 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
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- 239000012774 insulation material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
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- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- 238000005491 wire drawing Methods 0.000 description 1
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Abstract
The utility model provides a multistratum control type electromagnetic induction heating device. Power is supplied by a power grid, and filtered through single-phase rectification or three-phase full-bridge rectification to generate a direct-current voltage required by a half-bridge or full-bridge inverter. Through an embedded control system, the full-bridge or half-bridge inverter is driven, and an intermediate-frequency or high-frequency alternating current is generated. The intermediate-frequency or high-frequency alternating current is connected to a plurality of resonance coil heating arrays through a plurality of electrical switches. According to the needs of heating, through the control of the embedded control system, each heating resonant circuit can be switched on or switched off so as to realize variable power type heating or piecewise independent control type heating. The device is controlled by a host, so the system halted problem and the burning problem due to the magnetic interference caused by adopting a plurality of independent hosts with a conventional heating system can be avoided, so that the reliability and stability can be greatly improved.
Description
Technical field
The utility model belongs to field of electric heating, relates in particular to that to adopt the electromagnetic induction method to carry out electrically heated, and a kind of multistage induction coil adds thermal control, and Power Conditioning Unit.
Electromagnetic induction heater is fit to substitute traditional electrical heated filament, heating wire, electrothermal tube, infrared quartz pipe, the Electric heating such as pottery, and the mode of heatings such as tradition fire coal, fuel oil, combustion gas, have electrical safety, the long-life, heat transfer resistance is little, the temperature difference is low, and heat density is high, and power is large, the advantages such as superhigh temperature heats, and is energy-conservation.Intermediate frequency or radio-frequency induction coil flux change, in being heated metal, form magnetic hysteresis loss and eddy current loss, produce heat energy, do not exist heating wire high temperature by the temperature difference and the thermal resistance of the conduction of heat conductive insulating mica, therefore do not exist the high temperature of heating wire to blow problem, and the safety problem such as electric insulation is aging.
The electromagnetic induction heater of this multistage control, adopt loading and the unloading of same main frame (MCU) control multistage coil, solved the traditional electrical magnetic power and be difficult to control and adjusting, and between many main frames (MCU) multi-coil, the machine problem is burnt in " bombing " that magnetic flux interference causes.Use the electromagnetic induction heater of multistage control, can realize the stack of multi-coil power, and the meticulous control of temperature separately (power), heating power is not limited by the unit are power density, and power control is convenient, therefore uses more extensive.
The electromagnetic induction heater of this multistage control, has the multistage independent heating, and stepping heating function, can be widely used in industrial instant electric water heater, civilian instant electric water heater, solar energy heating companion, without the container boiler, without the container steam generator, pipeline heating, and control such as the heating power of industrial heat treatment etc.Be particularly suitable for having multistage absolute coil (heating cylinder) the heating and energy saving engineering that magnetic flux is crosstalked; such as the injection molding machine induction heating; the plastics inflation film manufacturing machine; wire drawing machine; comminutor, rubber extruder, vulcanizer; cable is produced the extruder heating, and the multi-coil high-power intermediate frequency heating Energy Saving Control that superposes.
The electromagnetic induction heater of this multistage control owing to adopt a main frame (MCU) inversion, connects a plurality of heater coils by electric switch, with coil of tradition by a MCU control ratio, solved phase mutual interference " aircraft bombing " damage problem.The electromagnetic induction heater of this multistage control, to solving in the present employing traditional injection moulding machine induction heating energy saving, the reliability that generally occurs is low, burns easily controller, affects the problems such as the normal production of injection moulding factory, and an ideal technical scheme is provided.
Background technology
Aspect the industry heatings such as injection molding machine, many energy-conservation companies just begin the Electromagnetic Heating energy conservation of this respect several years ago.But because this class electromagnetic induction heating has many temperature control heatings of multistage characteristics, most of this class Electromagnetic Heating product adopts one section one master control (MCU) control mode, because magnetic flux is crosstalked mutually, causes controller " bombing " to burn.Domestic many Electromagnetic Heating product manufacturer still fails to solve the reliability of this series products, stability problem through for many years effort.
The characteristics of the multistage temperature control industry heatings such as injection molding machine are:
1, a heating " gun barrel " multistage heating, each section independent temperature setting and add thermal control.
2, high-temperature heating is heated workpiece temperature 300 degree, if adopt heating wire to heat by insulating heat-conduction material, the heating wire temperature is up to more than 700 degree.
3, adopt electromagnetic induction heating, have identical flux path between a plurality of independent induction coil and the phase mutual interference.
Adopt induction heating mode, can lay high insulation material " heating cylinder " outside, coiling insulation material outside by the high-frequency induction inversion, produces high-frequency current in coil, thereby " heating cylinder " internal direct practice midwifery living eddy current and direct the heating.Heat does not distribute in air, thereby the heat efficiency is high, and the workshop temperature environment improves.To the similar industrial heating, electromagnetic induction heating should be ideal energy-efficient mode of heating, and the fractional energy savings of heating part is between 30%-70%.
Yet, to this field of electric heating that needs multistage heating or need the control of stepping power, at present, induction heating control product on many markets is simply applied mechanically " household electromagnetic cooker " circuit, with a plurality of traditional resistor heating heat-generating discs, replace with a plurality of separate " household electromagnetic cooker ", because phase mutual interference between a plurality of single-chip microcomputers (MCU) system causes the induction heating controller life-span short, burns serious.It is inferior product quality to occur at present, low-price competition, each product provides in the improvement of the research of the theoretical model that company is not placed on main energy " induction heating " and product quality, plagiarize but adopt mutually, marketing method in case installation " bombing " (IGBT), is shifted responsibility onto the dealer aspect at a low price, say that the dealer goes wrong to equipment debugging, this moment, producer did not but provide the adjustment method of " ideal ".For many years like this running, form bad impression to energy unit, market general " do and pound ", the induction heating energy saving equipment that part is installed is also because quality problems, complete removal, cause present electromagnetism injection moulding, squeeze draw, blown film industry induction heating is used almost or blank, has a strong impact on energy-conservation the promoting the use of in these fields of electromagnetic induction heating.
In past several years, this phenomenon does not still improve, and dealer and the huge energy consumption enterprises such as injection molding machine look forward to having reliably always, and by " technical grade, army grade " requirement, long-lived Electromagnetic Heating power-saving technology occurs.
Summary of the invention
For present electromagnetic induction heating in injection moulding, squeeze draw, quality problems that the sector application such as blown film occurs, technical problem in the urgent need to address has:
1, adapts to the multistage induction coil, the induction heating method of independent (temperature) power control.
2, to multistage coil control, with same main frame (MCU), same high-frequency inversion system carries out high-frequency inversion, " burning machine, the bombing " problem of mutually crosstalking and causing between solution multiple single chip microcomputer (MCU).
3, to a plurality of coil controls, there is the magnetic flux coupling between coil, needs to solve the system stability problem that magnetic flux is mutually crosstalked and caused.
In order to realize the problems such as electromagnetic induction heating is safe, reliable, stablize, the technical solution of the utility model is:
1, adopt same main frame (MCU) to produce high-frequency inversion, magnetic flux is consistent in the magnetic circuit, to avoid the mutual interference problem of multiple single chip microcomputer.
2, by a plurality of relays or contactor or solid-state relay, switch on or off a plurality of induction coils loop, heat and stopped heating with control coil segment separately.Solve the multistage heating separately control of (temperature) power and the problem of regulating.
3, to there being the coil of magnetic flux coupling, confirm that Same Name of Ends connects polarity, make the stack of alternating magnetic field same polarity, avoid mutually crosstalking.
As among Fig. 1 to Fig. 4; [1] is rectifier bridge; [2] be filter capacitor; bleeder resistance and over-voltage protection element; [3] be the left half-bridge of inversion, [4] are the right half-bridge of electronic power inversion, and [5] are isolation capacitance; [6] be stepping/power diverter switch, [7] " heater coil capacitor resonance assembly " array for being composed in series by electric capacity and heat induced coil.
Wherein, [1] can be single-phase full bridge, or three phase full bridge, and [3] can be the dividing potential drop half-bridges that 2 capacitances in series form, or the half-bridge that is composed in series of power electronic device IGBT/MOS pipe.
" high-frequency inversion loop " by [1], and [2], [3], [4], [5] form." output power inverter loop " is by stepping/power diverter switch [6] display, and heat induced coil capacity resonance [7] display forms.
Each coil capacity resonance [7], after series connection stepping/power diverter switch [6], parallel join is to the output in " high-frequency inversion loop ".
Stepping/power diverter switch [6] can be contactor, relay, or solid-state relay, is labeled as the isolation capacitance of [5], according to circumstances, can keep or remove, and does not affect the output of high-frequency ac.
The course of work of the utility model controller is as follows:
The single-phase 220V of electric network source or three-phase 380V obtain DC bus-bar voltage after [1] rectification, by supplying 2 half-bridges [3], [4] after [2] filtering protection.The half-bridge that half-bridge [4] consists of for the series connection of power electronic device IGBT/MOS pipe.When half-bridge [3] was the capacitance partial pressure bridge, 2 half-bridges were operated in " semi-bridge inversion " pattern, and when half-bridge [3] was connected the half-bridge that consists of by power electronic device IGBT/MOS pipe, 2 bridges were operated in " full-bridge inverting " pattern.
Output power inverter through [5] isolation or directly output, by " stepping/power " diverter switch [6], connects a plurality of " heater coil capacitor resonance assembly " [7].
Many induction coils of working at same magnetic circuit are noted confirming Same Name of Ends, guarantee the magnetic flux Downward addition, in order to avoid power cancels out each other, and " magnetic circuit/circuit " short circuit.
As required, be switched on or switched off " stepping/power " diverter switch [6], obtain heating power and temperature that each section needs separately.
Adopt a plurality of single-chip microcomputers (MCU) to control separately with existing many induction coils and compare, advantage of the present utility model is:
(1) adopt the output of a main frame (MCU) inversion control, individual section coil disconnects or closure by diverter switch, eliminated asynchronous interference and magnetic flux short circuit between a plurality of independent controls (MCU), and be safe and reliable.
(2) main inverter controllers, volume is little lightweight, adopts original a plurality of " thermostat " as signal source, realizes " transparent " control alone, does not affect the temperature control precision of existing equipment.
(3) controller and coil life-span are long, safe and reliable.Coil working is at the normal temperature state, and each intersegmental work is without the phase mutual interference, and with traditional electromagnetic heating apparatus ratio, equipment dependability improves greatly.
(4) can optimize the structure of the equipment such as injection molding machine, reduce equipment cost.To the injection molding machine of new production etc., owing to not restricted by the 3.5W/ square centimeter, therefore can as required, improve injection molding machine structure, improving product performance.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1, Fig. 2, Fig. 3, Fig. 4 are the electrical schematic diagram of Electromechanically heating controller described in the utility model.
[1] be rectifier bridge, [2] are filter capacitor, bleeder resistance and over-voltage protection element, and [3] are the left half-bridge of inversion, and [4] are the right half-bridge of inversion, and [5] are isolation capacitance, and [6] are stepping/power diverter switch, [7] are the resonance coil capacitance component.
Embodiment
Be embodiment of the present utility model such as Fig. 1.When Alternating Current Power Supply was switched on, by rectifier bridge [1], by filter capacitor, bleeder resistance and over-voltage protection element [2] obtained galvanic current and press the full-bridge that forms for [3], [4].
Under the driving of embedded control system, full-bridge inverting obtains intermediate frequency or high-frequency ac, and [5] are isolation capacitance, and output power inverter is supplied with a plurality of induction heating output loops, i.e. each resonant load array by a plurality of " stepping/power diverter switch " [6].Under the control of embedded control system, according to sensor signal, control in real time stepping/power diverter switch [6], be switched on or switched off heating resonance coil assembly [7], realize becoming power electromagnet heating or multistage independent heating.
According to power match and cost performance needs, also can suitably select the embodiment such as Fig. 2-Fig. 4.
Claims (4)
1. the electromagnetic induction heater of multistage control; by rectifier bridge, filter capacitor, bleeder resistance and over-voltage protection element; left inverse becomes half-bridge; right inversion half-bridge forms the high-frequency inversion loop, by stepping/power diverter switch display; power coil capacitor resonance assembly array; form the output power inverter loop, it is characterized in that: the output power inverter loop is by a plurality of steppings/power diverter switch, and a plurality of coil capacity resonant loads of parallel control form.
2. the electromagnetic induction heater of a kind of multistage control according to claim 1, it is characterized in that: wherein stepping/power diverter switch is comprised of relay.
3. the electromagnetic induction heater of a kind of multistage control according to claim 1, it is characterized in that: wherein stepping/power diverter switch is comprised of contactor.
4. the electromagnetic induction heater of a kind of multistage control according to claim 1, it is characterized in that: wherein stepping/power diverter switch is comprised of " solid-state relay ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496497 CN202818656U (en) | 2012-09-26 | 2012-09-26 | Multistratum control type electromagnetic induction heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496497 CN202818656U (en) | 2012-09-26 | 2012-09-26 | Multistratum control type electromagnetic induction heating device |
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| CN202818656U true CN202818656U (en) | 2013-03-20 |
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| CN 201220496497 Expired - Fee Related CN202818656U (en) | 2012-09-26 | 2012-09-26 | Multistratum control type electromagnetic induction heating device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501555A (en) * | 2013-09-25 | 2014-01-08 | 电子科技大学 | Digital phase locking and frequency tracking electromagnetic induction heating power controller |
| CN104185328A (en) * | 2013-05-24 | 2014-12-03 | 松下电器产业株式会社 | Induction heating device |
| CN104868746A (en) * | 2015-05-22 | 2015-08-26 | 北京工业大学 | Electromagnetic transmitter |
| CN106787832A (en) * | 2016-11-29 | 2017-05-31 | 北京北广科技股份有限公司 | A kind of radio-frequency power supply power supply circuit without Switching Power Supply |
| CN106793227A (en) * | 2015-11-23 | 2017-05-31 | 上海兆力电器制造有限公司 | Centreless intermediate frequency furnace |
| CN106900096A (en) * | 2015-12-18 | 2017-06-27 | E.G.O.电气设备制造股份有限公司 | Heater circuit and induction cook kitchen range |
| CN108156684A (en) * | 2017-12-08 | 2018-06-12 | 广东美的厨房电器制造有限公司 | For the heating control circuit and electromagnetic cooking appliance of electromagnetic cooking appliance |
| CN108507152A (en) * | 2018-03-19 | 2018-09-07 | 梁之龙 | The distributed heat energy system of current vortex heating device and its composition |
| CN108901095A (en) * | 2018-06-01 | 2018-11-27 | 刘志强 | A kind of multistage photovoltaic electromagnetic induction control heating means and its application |
| CN109843097A (en) * | 2016-10-19 | 2019-06-04 | 英美烟草(投资)有限公司 | Induction heating apparatus |
| CN110513746A (en) * | 2019-06-20 | 2019-11-29 | 浙江大学 | A kind of high-efficiency water heater power amplifier |
| WO2024094654A1 (en) * | 2022-10-31 | 2024-05-10 | Nicoventures Trading Limited | Inductive heating |
| WO2024094658A1 (en) * | 2022-10-31 | 2024-05-10 | Nicoventures Trading Limited | Inductive heating |
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2012
- 2012-09-26 CN CN 201220496497 patent/CN202818656U/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104185328B (en) * | 2013-05-24 | 2018-06-08 | 松下电器产业株式会社 | Induction heating apparatus |
| CN104185328A (en) * | 2013-05-24 | 2014-12-03 | 松下电器产业株式会社 | Induction heating device |
| CN103501555B (en) * | 2013-09-25 | 2015-02-18 | 电子科技大学 | Digital phase locking and frequency tracking electromagnetic induction heating power controller |
| CN103501555A (en) * | 2013-09-25 | 2014-01-08 | 电子科技大学 | Digital phase locking and frequency tracking electromagnetic induction heating power controller |
| CN104868746A (en) * | 2015-05-22 | 2015-08-26 | 北京工业大学 | Electromagnetic transmitter |
| CN106793227A (en) * | 2015-11-23 | 2017-05-31 | 上海兆力电器制造有限公司 | Centreless intermediate frequency furnace |
| CN106900096B (en) * | 2015-12-18 | 2021-05-11 | E.G.O.电气设备制造股份有限公司 | Heating circuit and induction cooking hob |
| US11229092B2 (en) | 2015-12-18 | 2022-01-18 | E.G.O. Elektro-Geraetebau Gmbh | Heating circuit and induction cooking hob |
| CN106900096A (en) * | 2015-12-18 | 2017-06-27 | E.G.O.电气设备制造股份有限公司 | Heater circuit and induction cook kitchen range |
| US11470883B2 (en) | 2016-10-19 | 2022-10-18 | Nicoventures Trading Limited | Inductive heating arrangement |
| CN109843097A (en) * | 2016-10-19 | 2019-06-04 | 英美烟草(投资)有限公司 | Induction heating apparatus |
| US11937643B2 (en) | 2016-10-19 | 2024-03-26 | Nicoventures Trading Limited | Inductive heating circuit for volatilizing smokeable material |
| CN114009837A (en) * | 2016-10-19 | 2022-02-08 | 尼科创业贸易有限公司 | Aerosol supply device |
| CN106787832A (en) * | 2016-11-29 | 2017-05-31 | 北京北广科技股份有限公司 | A kind of radio-frequency power supply power supply circuit without Switching Power Supply |
| CN108156684A (en) * | 2017-12-08 | 2018-06-12 | 广东美的厨房电器制造有限公司 | For the heating control circuit and electromagnetic cooking appliance of electromagnetic cooking appliance |
| CN108156684B (en) * | 2017-12-08 | 2019-07-05 | 广东美的厨房电器制造有限公司 | Heating control circuit and electromagnetic cooking appliance for electromagnetic cooking appliance |
| WO2019109586A1 (en) * | 2017-12-08 | 2019-06-13 | 广东美的厨房电器制造有限公司 | Heating control circuit for induction cooking appliance, and induction cooking appliance |
| CN108507152A (en) * | 2018-03-19 | 2018-09-07 | 梁之龙 | The distributed heat energy system of current vortex heating device and its composition |
| CN108901095B (en) * | 2018-06-01 | 2021-12-10 | 刘志强 | Multistage photovoltaic electromagnetic induction control heating method and application thereof |
| CN108901095A (en) * | 2018-06-01 | 2018-11-27 | 刘志强 | A kind of multistage photovoltaic electromagnetic induction control heating means and its application |
| CN110513746A (en) * | 2019-06-20 | 2019-11-29 | 浙江大学 | A kind of high-efficiency water heater power amplifier |
| WO2024094654A1 (en) * | 2022-10-31 | 2024-05-10 | Nicoventures Trading Limited | Inductive heating |
| WO2024094658A1 (en) * | 2022-10-31 | 2024-05-10 | Nicoventures Trading Limited | Inductive heating |
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Effective date of registration: 20170220 Address after: 519000 Zhuhai Province, Xiangzhou District, No. 2372 West Road, Mei Hua, building six, layer, east of the 1-3 axis Patentee after: Zhuhai mini electronic technology limited company Address before: Jianmin road Xiangzhou District 519000 Guangdong Province, Zhuhai City No. 111 building 35 room 702 Patentee before: Zhang Zhenqiang |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20180926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |