CN202514092U - Industrial electromagnetic heating controller - Google Patents
Industrial electromagnetic heating controller Download PDFInfo
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- CN202514092U CN202514092U CN 201220182198 CN201220182198U CN202514092U CN 202514092 U CN202514092 U CN 202514092U CN 201220182198 CN201220182198 CN 201220182198 CN 201220182198 U CN201220182198 U CN 201220182198U CN 202514092 U CN202514092 U CN 202514092U
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Abstract
The utility model provides an industrial electromagnetic heating controller. The controller comprises a rectification filtering module, a main control module, a driving module, a power module, and a detection and protection module, wherein the power module comprises an IGBT integrated circuit, the rectification filtering module supplies dc current for the main control module, the driving module, the power module, and the detection and protection module, the main control module is respectively connected with the driving module and the detection and protection module, the main control module sends pulse signals to the driving module, the detection and protection module back feeds the main control module with state signals of an electromagnetic heating circuit which is connected with the electromagnetic heating controller, the driving module is connected with the power module, and the driving module is used for driving the power module to supply power to the electromagnetic heating circuit. The industrial electromagnetic heating controller is widely applied to industrial electromagnetic heating fields.
Description
Technical field
The utility model relates to a kind of control device, is applied to industrial electromagnetism heating field.
Background technology
At industrial circles such as plastics, building materials, oil transmission, automobile makings, there is electric heating equipment in regular meeting, and the power consumption that is used for heating accounts for very big proportion at production cost.Traditional Electric heating adopts the electric heating coil mode of heating, and electric heating coil promptly is set outside being heated container, and the heat that electric heating coil produces is transmitted to and is heated on the chamber wall, and then the material that is heated in the container is heated.This mode of heating; Electric heating coil be heated that part surface that chamber wall contacts is long-pending to be heat-transfer area; The heat that electric heating coil remainder surface area distributes directly is lost in the surrounding air; Thereby the efficiency of heating surface is low, and energy waste is serious, is dispersed into airborne heat simultaneously surrounding environment is had a negative impact.
Problem in view of the electric heating coil mode of heating exists at present, gets more and more and adopts the electromagnetism mode of heatings.The electromagnetism heating is to utilize electromagnetic induction principle to convert electric energy to heat energy.Is the 15-30kHz DC power supply through the electromagnetism heating controller with AC rectification, the inversion of 50Hz/60Hz, is loaded into and is wrapped in the induction coil that is heated on the container outer wall, thereby produce alternating electromagnetic field.Alternating electromagnetic field in being heated container, makes that being heated vessel temp raises through eddy current and magnetic hysteresis acting in conjunction, and then heating material wherein.Compare with the electric heating coil mode of heating, the thermal losses of electromagnetism mode of heating is few, firing rate is fast, has wide practical use at industrial circle as a kind of energy-conservation heating technique.
The electromagnetism heating controller mainly adopts the pure hardware circuit design of non-processor in the electromagnetism mode of heating; Heating target plant capacity fan-out capability difference to different is big, though for same heating target equipment use the back for a long time since the variation that the loading coil inductance value changes power output capacity also clearly.In addition, move simultaneously under the mutual disturbed condition running into the starting that powers on, voltage ripple of power network, multimachine, electromagnetism heating controller equipment dependability is poor, often partly burns because of power drive and causes aircraft bombing.These problems affect with restricted electromagnetism heating and energy saving technology applying at industrial circle.
The utility model content
In order to solve the problem of the poor reliability that has the electromagnetic heating technique existence now, the utility model provides a kind of industrial electromagnetic heating controller.
The technical scheme of the utility model is following:
A kind of industrial electromagnetic heating controller comprises rectification filtering module, main control module, driver module, power model and detection and protection module; Said power model comprises the IGBT integrated circuit; Said rectification filtering module provides direct current to said main control module, said driver module, said power model and said detection and protection module respectively; Said main control module is connected with said detection and protection module with said driver module respectively, and said main control module sends pulse signal to said driver module; Said detection and protection module feed back the status signal of the electromagnetic heating circuit of said electromagnetism heating controller connection to said main control module; Said driver module is connected with said power model; Said driver module is used to drive said power model and supplies power to said electromagnetic heating circuit.
Said industrial electromagnetic heating controller also comprises the external interface module; Said rectification filtering module provides direct current to said external interface module; Said external interface module receives from the control command of outside and is transferred to said main control module.
Compatible IGBT full-bridge resonant circuit of said power model and IGBT half-bridge resonance circuit.
Whether said detection and protection module detect said pulse signal and lost efficacy, and forbid then that said pulse signal sent to said driver module when said pulse signal loses efficacy.
Said external interface module comprises switch value input interface and switching value output interface and/or digital signal communication interface and/or analog signal interface and/or Man Machine Interface.
Said digital signal interface is CAN EBI or Ethernet interface or GPRS interface or 3G mobile communication interface.
Said analog signal interface is supported 4～20mA, the input of 1～5V analog signal.
Said external interface is supported 6 way switch amount input interfaces, and supports 6 way switch amount output interfaces.
Said main control module makes said electromagnetic heating circuit be operated in the state near resonance point according to the status signal adjustment pulse signal frequency of said electromagnetic heating circuit.
Said main control module possesses three kinds of mode of operations: start-up mode, normal operation mode and error protection pattern; Under said start-up mode, the initial output pulse signal duty ratio of main control module increases through pulse width modulation gradually, realizes said electromagnetic heating circuit operating current soft start; Under said normal mode of operation,, make said electromagnetic heating circuit operating current keep constant according to the status signal adjustment pulse signal frequency and the pulse duty factor of said electromagnetic heating circuit; In said error protection pattern, said electromagnetic heating circuit breaks down, and said main control module is forbidden said pulse signal output.
The technique effect of the utility model:
Detection and protection module feed back to main control module with electromagnetic heating circuit inductance, electric current variation in the technical scheme of the utility model; Main control module thus can corresponding adjustment pulse frequency, duty ratio; And then control and driving module and power model, guarantee that power output is constant, improve reliability.
Description of drawings
Fig. 1 is the schematic diagram of the utility model electromagnetism heating controller.
Fig. 2 is an embodiment schematic diagram of the utility model electromagnetism heating controller.
Identifier declaration is following among the figure:
1, rectification filtering module; 2, main control module; 3, driver module; 4, power model; 5, detection and protection module; 6, external interface module.
Embodiment
Fig. 1 has shown the principle of the utility model electromagnetism heating controller.The electromagnetism heating controller comprises rectification filtering module, main control module, driver module, power model and detection and protection module, and wherein, power model comprises the IGBT integrated circuit.Rectification filtering module is connected with main control module, driver module, power model and detection and protection module respectively.Main control module is connected with detection and protection module with driver module respectively.Driver module is connected with power model.In addition, the electromagnetism heating controller also comprises the external interface module, and rectification filtering module is connected with the external interface module.
Rectification filtering module is converted into the multi-channel DC electricity with the alternating current of the outside input of controller, offers main control module, driver module, power model, detection and protection module and external interface module respectively.
Main control module produces the pulse signal of certain frequency and duty ratio, is used for the driving power module after handling through driver module, and the power supply of 15～30kHz is provided for electromagnetic heating circuit.Power model is connected with electromagnetic heating circuit, supplies power to electromagnetic heating circuit.The electromagnetic heating circuit that below for convenience the electromagnetism heating controller is connected abbreviates load as.
IGBT (Insulated Gate Bipolar Transistor); Insulated gate bipolar transistor; By the compound full-control type voltage driven type power semiconductor that BJT (double pole triode) and MOS (insulating gate type field effect tube) form, have the advantage of low conduction voltage drop two aspects of high input impedance and the GTR of MOSFET concurrently.The IGBT integrated circuit is existing product.
The status signal of electromagnetic heating circuits such as detection and protection module detection electromagnetism heating controller input voltage, load current, inductance, temperature inputs to main control module and handles.According to these status signals, main control module is correspondingly adjusted pulse signal output state, frequency and the duty ratio of output.In addition, but detect and the protection module locked circuit of connection hardware also, when voltage, electric current transfinited and detect the main control module pulse signal and lost efficacy, the hardware lock dead circuit was closed main control module output pulse signal function, and the protection power model is not damaged.
The electromagnetism heating controller that above-mentioned stream filtration module, main control module, driver module, power model and detection and protection module are formed can be adjusted according to the variation of load automatically, realizes that power output is constant, improves reliability.Do not having the external interface module, when not having outside control signal of importing or instruction, database that can be built-in according to the electromagnetism heating controller makes main control module make corresponding adjustment according to the variation of load.
Said external interface module can receive the control signal or the instruction of outside input, and offers main control module and handle, and has increased the flexibility and the autgmentability of electromagnetism heating controller.Main control module is according to control signal adjustment pulse signal output state, frequency and duty ratio.Main control module can offer remote supervisory and control(ling) equipment through the external interface module for the detection data of execution result, detection and the protection module of external control signal or Control on Communication instruction and the running status of main control module.Main control module can need not external control signal or instruction according to pre-set programs, adjusts pulse signal output state, frequency and the duty ratio of output automatically according to detection signal.
Fig. 2 has shown an embodiment of the utility model.
In the present embodiment, rectification filtering module 1 comprises three phase rectifier filter circuit and single-phase rectifier filter circuit two parts.Electromagnetism heating controller operate as normal power input voltage 380VAC adopts the three-phase four-wire system wiring.The 380VAC power supply is divided into two-way after inserting the electromagnetism heating controller: the one tunnel is to pass through filter circuit again after three phase lines get into the three phase rectifier bridge module; Direct voltage about output 500V; For power model 4 provides power supply, this also is the power supply of electromagnetism heating controller power output; Another road is to get wherein a phase line and zero line; After the process single-phase rectifier is filtered into direct current; Inversion becomes the waveform of tens kHz frequencies through switch chip, inputs to isolating transformer, and isolating transformer has many group coils and out splice going splice; The direct voltage that every road output signal is isolated through output multichannel behind the rectifying and wave-filtering is respectively main control module 2, driver module 3, detection and protection module 5 and external interface module 6 insulating power supply is provided.
In the present embodiment; During the work of electromagnetism heating controller; Power model 4 needs external loading inductance coupling to form series resonance, and the series resonance signal is to amount to 4 road pulse signals by main control module 2 output A, B, C, D, wherein A, D homophase, B, C homophase and A, B anti-phase.Every road pulse signal is used to produce resonant excitation for power model 4 through handling the back for driver module 3.Behind the pulse signal input driver module 3, after isolating through high speed photo coupling earlier, through at a high speed pipe being handled the rising and falling edges of pulse, input to power model 4 more again.Power model 4 compatible IGBT full-bridge resonant circuits and IGBT half-bridge resonance circuit can satisfy the application of IGBT full-bridge resonant circuit or IGBT half-bridge resonance circuit respectively through the position of adjustment resonant capacitance according to the needs of power output.Specifically, IGBT half-bridge resonance circuit is primarily aimed at the small power electromagnetic heat application of 5KW, 10KW, can adopt two IGBT single tubes or a slice IGBT half-bridge module to make up; And IGBT full-bridge resonant circuit is primarily aimed at the above high-power heat application of 15KW, can adopt two IGBT half-bridge modules or a slice IGBT full-bridge module construction.
In the present embodiment, the electromagnetism heating controller detects and protection module 5 is gathered signals such as voltage, electric current, load, temperature, pulse in real time through different collecting units.Wherein voltage, electric current, temperature acquisition are through corresponding sensor acquisition input voltage, load current signal; Signal collected through after the digital circuit conditioning; On the one hand be converted into digital signal or be for conversion into frequency signal and input to main control module 2 and handle through the V/F circuit through adc circuit; Adopt optimized control strategy, improve the reliability of electromagnetism heating controller antijamming capability and work.Input to the voltage and current protective circuit on the other hand, for the input voltage overrate ± 10% just carry out overvoltage or under-voltage protection, for load current overrate 10% or be lower than 50% of rated value and carry out overcurrent or current anomaly protection.The collection of load inductance amount is to change according to load current, combines the controller running parameter to calculate by main control module 2, is used for the adjustment of main control module 2 output pulse signal frequencies and duty ratio.After protective circuit works, the pulse signal of main control module 2 output will be forbidden by hardware, make the inactivity output that quits work of electromagnetism heating controller, and protection equipment and load can not be damaged.
Main control module 2 can change the computational load inductance value according to the electric current that detects and protection module 5 is gathered in real time and change, and realizes the adjustment of pulse signal frequency self adaptation, makes loaded work piece at the state near resonance point, improves the power factor of system.But constantly change the interference of the generation of the electric equipment around electromagnetism heating controller high order harmonic component in order to reduce pulse signal frequency; Pulse signal frequency can not be followed load inductance quantitative change real-time change; But regularly carry out the self adaptation adjustment operating frequency is remained on apart within the certain deviation of resonance frequency, and make load keep weak perception.
Main control module 2 possesses three kinds of mode of operations: start-up mode, normal operation mode and error protection pattern.Said start-up mode is meant that main control module 2 initial output pulse signal duty ratios increase through PWM (pulse width modulation) mode gradually, realizes loaded work piece electric current soft start.Said normal operation mode is meant according to the electric current and the load variations that detect and protection module 5 is gathered, regularly adjusts pulse signal frequency and pulse duty factor, makes the loaded work piece electric current keep constant.Said error protection pattern is meant when faults such as outlet overvoltage, under-voltage, overcurrent, current anomaly, excess temperature, pulse inefficacy the output of main control module 2 inhibit pulse signals.
External interface module 6 comprises the digital signal communication interface, can support the CAN EBI or the Ethernet interface of one tunnel wired mode, also can support the GPRS or the 3G network interface of one road wireless mode.Digital communication interface adopts modularized design, and the Transistor-Transistor Logic level interface of unified employing standard is connected with main control module 2, can replace as required, but for each electromagnetism heating controller, can only select a kind of communication interface configuration.Upper management software can be through the real-time working state of digital signal communication interface telemonitoring electromagnetism heating controller, and not needing personnel to patrol and examine to the scene can long-rangely in time diagnose equipment fault, and in time carries out handled.
External interface module 6 comprises analog signal interface; Can support one tunnel 4～20mA, 1～5V or 0～5V analog quantity control interface; Convert digital quantity to through adc circuit and input to main control module 2; After can according to parameter calculating being set by main control module 2, through the PWM mode duty ratio is adjusted, realized accurate continuous adjusting of electromagnetism heating controller output heating power for the pulse signal of output.To 4～20mA, 1～5V or 0～5V signals collecting, need adjust accordingly for the parameter of ADC front end modulate circuit, in case the fixing analog signal input that can only support one type of circuit parameter.
External interface module 6 is supported 6 way switch amount input interfaces, wherein 1 the tunnel be used for outer button or control system switching value input control electromagnetism heating controller work start and stop, other 5 the tunnel are used to receive the execution heating signal of external temperature control system.External interface module 6 is supported 6 way switch amount output interfaces, is used to switch the work of outside multichannel loading time-sharing polling.If the input of 5 tunnel a certain way switch amount control signals is connected, then corresponding switching value output relay adhesive is used to trigger the external contactor adhesive, connects this road and loads to the electromagnetism heating controller and heat.If the input of variable connector amount control signal is arranged in 5 the tunnel connects simultaneously; Then main control module 2 needs each road load timesharing of scheduling to connect; Realization is to the taking turn heating of each road load, and this function can well satisfy the for example application scenario of a plurality of heating subregions of plastic processing such as injection molding machine, extruder.
It should be noted that; The above is merely the preferred embodiment of the utility model; Be not so limit the scope of patent protection of the utility model, the utility model can also carry out the improvement of material and structure to the structure of above-mentioned various parts, or employing technical equivalents thing is replaced.So the specification of all utilization the utility model and the equivalent structure that diagramatic content is done change, or directly or indirectly apply to other correlative technology fields and all in like manner all be contained in the scope that the utility model contains.
Claims (10)
1. an industrial electromagnetic heating controller is characterized in that: comprise rectification filtering module, main control module, driver module, power model and detection and protection module; Said power model comprises the IGBT integrated circuit;
Said rectification filtering module provides direct current to said main control module, said driver module, said power model and said detection and protection module respectively;
Said main control module is connected with said detection and protection module with said driver module respectively, and said main control module sends pulse signal to said driver module;
Said detection and protection module feed back the status signal of the electromagnetic heating circuit of said electromagnetism heating controller connection to said main control module;
Said driver module is connected with said power model; Said driver module is used to drive said power model and supplies power to said electromagnetic heating circuit.
2. according to the said industrial electromagnetic heating controller of claim 1, it is characterized in that: also comprise the external interface module; Said rectification filtering module provides direct current to said external interface module; Said external interface module receives from the control command of outside and is transferred to said main control module.
3. according to the said industrial electromagnetic heating controller of claim 2, it is characterized in that: compatible IGBT full-bridge resonant circuit of said power model and IGBT half-bridge resonance circuit.
4. according to the said industrial electromagnetic heating controller of claim 3, it is characterized in that: whether said detection and protection module detect said pulse signal and lost efficacy, and forbid then that said pulse signal sent to said driver module when said pulse signal loses efficacy.
5. according to the said industrial electromagnetic heating controller of claim 4, it is characterized in that: said external interface module comprises switch value input interface and switching value output interface and/or digital signal communication interface and/or analog signal interface and/or Man Machine Interface.
6. according to the said industrial electromagnetic heating controller of claim 5, it is characterized in that: said digital signal interface is CAN EBI or Ethernet interface or GPRS interface or 3G mobile communication interface.
7. according to the said industrial electromagnetic heating controller of claim 5, it is characterized in that: said analog signal interface is supported 4～20mA, the input of 1～5V analog signal.
8. according to the said industrial electromagnetic heating controller of claim 5, it is characterized in that: said external interface is supported 6 way switch amount input interfaces, and supports 6 way switch amount output interfaces.
9. according to the said industrial electromagnetic heating controller of claim 1, it is characterized in that: said main control module makes said electromagnetic heating circuit be operated in the state near resonance point according to the status signal adjustment pulse signal frequency of said electromagnetic heating circuit.
10. according to the said industrial electromagnetic heating controller of claim 1, it is characterized in that: said main control module possesses three kinds of mode of operations: start-up mode, normal operation mode and error protection pattern; Under said start-up mode, the initial output pulse signal duty ratio of main control module increases through pulse width modulation gradually, realizes said electromagnetic heating circuit operating current soft start; Under said normal mode of operation,, make said electromagnetic heating circuit operating current keep constant according to the status signal adjustment pulse signal frequency and the pulse duty factor of said electromagnetic heating circuit; In said error protection pattern, said electromagnetic heating circuit breaks down, and said main control module is forbidden said pulse signal output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220182198 CN202514092U (en) | 2012-04-25 | 2012-04-25 | Industrial electromagnetic heating controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220182198 CN202514092U (en) | 2012-04-25 | 2012-04-25 | Industrial electromagnetic heating controller |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906283A (en) * | 2012-12-26 | 2014-07-02 | 天津市龙津科技有限公司 | Electromagnetic heating controller |
| CN104244480A (en) * | 2013-06-17 | 2014-12-24 | 苏州新华软智能装备有限公司 | Intelligent electromagnetic vortex heating controller |
| CN104869677A (en) * | 2015-05-25 | 2015-08-26 | 福建守正节能科技有限公司 | Multifunctional electromagnetic heating control chip |
| CN105050217A (en) * | 2015-07-28 | 2015-11-11 | 阳春丽 | Synchronous running method of serial-resonant induction heating power supply |
| CN105990188A (en) * | 2015-03-06 | 2016-10-05 | 中国科学院苏州纳米技术与纳米仿生研究所 | Heating device used for semiconductor fast annealing and control method |
| CN106060989A (en) * | 2016-06-08 | 2016-10-26 | 东营威玛石油钻具有限公司 | Induction heating power supply method |
| CN107592690A (en) * | 2016-07-06 | 2018-01-16 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic Heating cooker, the drive circuit of power switch pipe and its method |
| WO2019006950A1 (en) * | 2017-07-03 | 2019-01-10 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method and apparatus, electromagnetic heating cookware and machine-readable storage medium |
| CN109699095A (en) * | 2017-10-23 | 2019-04-30 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating apparatus and its method for heating and controlling and device |
| CN113242622A (en) * | 2021-05-27 | 2021-08-10 | 长春中际互频科技有限公司 | Modular intelligent heat supply module based on mutual frequency principle |
-
2012
- 2012-04-25 CN CN 201220182198 patent/CN202514092U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906283A (en) * | 2012-12-26 | 2014-07-02 | 天津市龙津科技有限公司 | Electromagnetic heating controller |
| CN104244480A (en) * | 2013-06-17 | 2014-12-24 | 苏州新华软智能装备有限公司 | Intelligent electromagnetic vortex heating controller |
| CN105990188B (en) * | 2015-03-06 | 2019-03-12 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of heating device and control method for semiconductor short annealing |
| CN105990188A (en) * | 2015-03-06 | 2016-10-05 | 中国科学院苏州纳米技术与纳米仿生研究所 | Heating device used for semiconductor fast annealing and control method |
| CN104869677A (en) * | 2015-05-25 | 2015-08-26 | 福建守正节能科技有限公司 | Multifunctional electromagnetic heating control chip |
| CN105050217A (en) * | 2015-07-28 | 2015-11-11 | 阳春丽 | Synchronous running method of serial-resonant induction heating power supply |
| CN106060989A (en) * | 2016-06-08 | 2016-10-26 | 东营威玛石油钻具有限公司 | Induction heating power supply method |
| CN107592690A (en) * | 2016-07-06 | 2018-01-16 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic Heating cooker, the drive circuit of power switch pipe and its method |
| CN107592690B (en) * | 2016-07-06 | 2020-09-01 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking device, power switch tube driving circuit and method thereof |
| WO2019006950A1 (en) * | 2017-07-03 | 2019-01-10 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method and apparatus, electromagnetic heating cookware and machine-readable storage medium |
| CN109699095A (en) * | 2017-10-23 | 2019-04-30 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating apparatus and its method for heating and controlling and device |
| CN109699095B (en) * | 2017-10-23 | 2021-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating equipment and heating control method and device thereof |
| CN113242622A (en) * | 2021-05-27 | 2021-08-10 | 长春中际互频科技有限公司 | Modular intelligent heat supply module based on mutual frequency principle |
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Owner name: JIANGSU YABANG SANBO ENERGY-SAVING INVESTMENT CO., Free format text: FORMER OWNER: SANBO ZHONGZI TECH CO., LTD. BEIJING Effective date: 20131219 |
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Effective date of registration: 20131219 Address after: 213164, No. 6, A building, Tianhong science and technology building, Changzhou science and Education City, No. 801 middle Wu Road, Wujin District, Jiangsu, Changzhou Patentee after: JIANGSU YABANG SANBO ENERGY-SAVING INVESTMENT CO., LTD. Address before: 100190 Zhongguancun East Road, Beijing, No. 95, No. Patentee before: Sanbo Zhongzi Tech Co., Ltd. Beijing |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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