CN106162972A - Electricity cooking pot and control circuit thereof - Google Patents
Electricity cooking pot and control circuit thereof Download PDFInfo
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- CN106162972A CN106162972A CN201510200463.7A CN201510200463A CN106162972A CN 106162972 A CN106162972 A CN 106162972A CN 201510200463 A CN201510200463 A CN 201510200463A CN 106162972 A CN106162972 A CN 106162972A
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Abstract
The invention discloses a kind of electricity cooking pot and control circuit thereof, wherein, control circuit includes: N number of coil panel module；Power module, power module is connected with N number of coil panel module respectively；N number of power switch, each power switch is connected to constitute N number of heater with each coil panel module one_to_one corresponding；N number of drive control module, each drive control module is connected with each power switch one_to_one corresponding to drive each power switch, and each drive control module includes integrated chip, the integrated chip in each drive control module is in order to control the drive control module of correspondence；Controller, the power switch drive end of controller is connected with N number of drive control module respectively, and N number of switch control terminal of controller is corresponding with the integrated chip in each drive control module respectively to be connected.This electricity cooking pot and control circuit thereof, without using the adhesive of relay to control the duty of just energy control coil dish, are greatly improved circuit reliability.
Description
Technical field
The present invention relates to electric heating appliance technical field, control circuit and one particularly to a kind of electricity cooking pot have
The electric cooking pot of this control circuit.
Background technology
When the electricity cooking pot such as product such as electric cooker, electromagnetic oven, electric pressure cooking saucepan uses the IH computer heating control of many drums, often
Individual coil panel is connected with relay, carrys out the duty of controller coil panel by controlling relay adhesive.
But, there is the problems such as mechanical life in relay, thus the reliability of whole control circuit can be caused to reduce, shadow
Ring the service life of the products such as electricity cooking pot such as electric cooker, electromagnetic oven, electric pressure cooking saucepan.
Summary of the invention
The purpose of the present invention is intended at least solve above-mentioned technological deficiency.
To this end, it is an object of the present invention to propose the control circuit of a kind of electricity cooking pot, it is not necessary to use relay
Adhesive controls the duty of just energy control coil dish, is greatly improved circuit reliability.
Further object is that proposition a kind of electricity cooking pot.
For reaching above-mentioned purpose, the control circuit of a kind of electricity cooking pot that one aspect of the present invention embodiment proposes, including: N
Individual coil panel module, wherein, N is the integer more than or equal to 2；Power module, described power module respectively with described N
Individual coil panel module is connected with to described N number of coil panel module for power supply；N number of power switch, described N number of power switch
In each power switch be connected to constitute N with each coil panel module one_to_one corresponding in described N number of coil panel module
Individual heater；N number of drive control module, each drive control module in described N number of drive control module and institute
State each power switch one_to_one corresponding in N number of power switch and be connected to drive described each power switch and described
Each drive control module includes integrated chip, and the integrated chip in described each drive control module is in order to control correspondence
Drive control module；Controller, the power switch drive end of described controller controls mould with described N number of driving respectively
Block be connected, N number of switch control terminal of described controller respectively with the integrated chip pair in described each drive control module
Should be connected, described controller exports control signal with in described each drive control module by each switch control terminal
Integrated chip be controlled.
The control circuit of electric cooking pot according to embodiments of the present invention, is exported by the switch control terminal of controller and controls letter
Number the integrated chip in each drive control module is controlled whether each drive control module enters accordingly
Row work, the drive control module being operated can drive corresponding power switch to be operated such that it is able to controls phase
The duty of the coil panel module coil dish answered.Therefore, the control circuit of the electric cooking pot of the present invention is without using
Relay, thus the adhesive to relay need not be used to control the duty of just energy control coil disk module coil dish,
Avoiding the reliability that have impact on whole control circuit mechanical life of relay, circuit reliability is greatly enhanced,
And also the service life of electricity cooking pot can be extended.
Wherein, when N is 2, described N number of power switch is the first power switch and the second power switch, described N
Individual drive control module is the first drive control module and the second drive control module, in described first drive control module
Integrated chip be the first integrated chip, the integrated chip in described second drive control module is the second integrated chip.
Specifically, described first drive control module also includes: the first resistance, and one end of described first resistance is with described
Power switch drive end is connected, and one end of described first resistance is preset power supply by the second resistance and first and is connected, institute
The input of the other end and described first integrated chip of stating the first resistance is connected；3rd resistance, described 3rd resistance
One end is preset power supply with described first and is connected, the other end of described 3rd resistance and the power end of described first integrated chip
It is connected；4th resistance, described 4th resistance and described 3rd resistor coupled in parallel；5th resistance, the one of described 5th resistance
End is connected with the first switch control terminal of described controller, the other end of described 5th resistance and described first integrated chip
Control end be connected；First electric capacity, one end of described first electric capacity is connected with the other end of described 5th resistance, described
The other end ground connection of the first electric capacity；6th resistance, one end of described 6th resistance and the control of described first power switch
End is connected, and the other end of described 6th resistance is connected with the outfan of described first integrated chip；7th resistance, described
7th resistance and described 6th resistor coupled in parallel.
Further, described first drive control module also includes the 14th resistance, the first stabilivolt and the 3rd electric capacity of parallel connection.
Wherein, when described controller is by described first switch control terminal output high level signal, described first integrated core
Sheet is started working, and described first drive control module normally works, and described first power switch drives at described power switch
On or off under the control driving signal of moved end output；Described controller is exported by described first switch control terminal
During low level signal, described first integrated chip quits work, and described first drive control module quits work, described
First power switch quits work.
Specifically, described second drive control module also includes: the 8th resistance, and one end of described 8th resistance is with described
Power switch drive end is connected, and one end of described 8th resistance is preset power supply by the second resistance and first and is connected, institute
The input of the other end and described second integrated chip of stating the 8th resistance is connected；9th resistance, described 9th resistance
One end is preset power supply with described first and is connected, the other end of described 9th resistance and the power end of described second integrated chip
It is connected；Tenth resistance, described tenth resistance and described 9th resistor coupled in parallel；11st resistance, described 11st resistance
The second switch of one end and described controller control end and be connected, the other end of described 11st resistance collects with described second
The control end becoming chip is connected；Second electric capacity, the other end phase of one end of described second electric capacity and described 11st resistance
Even, the other end ground connection of described second electric capacity；12nd resistance, one end of described 12nd resistance and described second merit
The control end of rate switch is connected, and the other end of described 12nd resistance is connected with the outfan of described second integrated chip；
13rd resistance, described 13rd resistance and described 12nd resistor coupled in parallel.
Further, described second drive control module also includes the 15th resistance, the second stabilivolt and the 4th electric capacity of parallel connection.
Wherein, when described controller controls end output high level signal by described second switch, described second integrated core
Sheet is started working, and described second drive control module normally works, and described second power switch drives at described power switch
On or off under the control driving signal of moved end output；Described controller controls end by described second switch and exports
During low level signal, described second integrated chip quits work, and described second drive control module quits work, described
Second power switch quits work.
Additionally, the embodiment of the present invention also proposed a kind of electricity cooking pot, it includes the control circuit of above-mentioned electric cooking pot.
The electric cooking pot of the embodiment of the present invention is because its control circuit is without using relay, thus need not use relay
Adhesive control just can the duty of control coil disk module coil dish, it is to avoid impact mechanical life of relay
The reliability of whole control circuit, is greatly improved the reliability of circuit, and therefore, the service life of electricity cooking pot also may be used
It is extended, meets the demand of user.
Aspect and advantage that the present invention adds will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or that add aspect and advantage will become bright from the following description of the accompanying drawings of embodiments
Aobvious and easy to understand, wherein:
Fig. 1 is the block diagram of the control circuit of the electric cooking pot according to inventive embodiments；And
The circuit diagram of the control circuit of the electric cooking pot of an embodiment is invented according to Fig. 2.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.For letter
Changing disclosure of the invention, hereinafter parts and setting to specific examples are described.Certainly, they are the most merely illustrative,
And it is not intended to limit the present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.
This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiment and/or arranging
Relation.Additionally, the various specific technique that the invention provides and the example of material, but ordinary skill people
Member is it can be appreciated that the property of can be applicable to of other techniques and/or the use of other materials.It addition, described below first is special
Levy second feature it " on " structure can include that the first and second features are formed as the embodiment directly contacted, it is possible to
To include the embodiment that other feature is formed between the first and second features, such first and second features may not
It it is directly contact.
In describing the invention, it should be noted that unless otherwise prescribed and limit, term " is installed ", " being connected ",
" connect " and should be interpreted broadly, for example, it may be mechanically connected or electrical connection, it is also possible to be the company of two element internals
Logical, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, for those of ordinary skill in the art
Speech, can understand the concrete meaning of above-mentioned term as the case may be.
Describe the control circuit of the electric cooking pot proposed according to embodiments of the present invention with reference to the accompanying drawings and there is this control
The electric cooking pot of circuit processed.
Fig. 1 is the block diagram of the control circuit of the electric cooking pot according to inventive embodiments.As it is shown in figure 1, this electricity
The control circuit of cooking pot includes: N number of coil panel module 11,12 ..., 1N, power module 20, and N number of power is opened
Pass 31,32 ..., 3N, N number of drive control module 41,42 ..., 4N, and controller 70.Wherein, N
For the integer more than or equal to 2, controller 70 can be MCU, and power switch can be IGBT (Insulated Gate
Bipolar Transistor, insulated gate bipolar transistor).
As it is shown in figure 1, power module 20 is connected with N number of coil panel module 11,12 ..., 1N with to N number of respectively
Coil panel module 11,12 ..., 1N power；Each power switch in N number of power switch 31,32 ..., 3N
It is connected to constitute N number of adding with each coil panel module one_to_one corresponding in N number of coil panel module 11,12 ..., 1N
Thermal such as resonance heater；Each drive control module in N number of drive control module 41,42 ..., 4N
It is connected with each power switch one_to_one corresponding in N number of power switch 31,32 ..., 3N to drive each power to open
Closing, i.e. say, each drive control module generates according to the control signal that controller such as MCU sends and drives signal to drive
Dynamic corresponding power switch such as IGBT is operated, and each drive control module includes that integrated chip is the most N number of
Integrated chip U1, U2 ..., UN, the integrated chip in each drive control module is in order to control the driving control of correspondence
Molding block, when the integrated chip in the most each drive control module is started working, is just controlling corresponding drive control module
Often work；The power switch drive end such as IGBT drive end of controller 70 respectively with N number of drive control module 41,
42 ..., 4N be connected, N number of switch control terminal 81 of controller 70,82 ..., 8N respectively with each drive control
Integrated chip correspondence in molding block is connected, and controller 70 exports control signal with to each by each switch control terminal
Integrated chip in drive control module is controlled, and the most normally exports driving controlling corresponding drive control module
Signal, thus realize controlling the duty of corresponding power switch.Wherein, controller 70 is by N number of on-off control
End 81,82 ..., the control signal of 8N output can be low and high level signals, it is also possible to be and corresponding power switch
Such as IGBT drives the pulse signal that signal synchronizes.
According to one embodiment of present invention, when N is 2, as in figure 2 it is shown, N number of coil panel module is First Line
Circle disk module 11 and the second coil panel module 12, N number of power switch is the first power switch 31 such as IGBT1 and the
Two power switch 32 such as IGBT2, N number of drive control module is that the first drive control module 41 and second drives control
Molding block 42, the integrated chip in the first drive control module 41 is the first integrated chip U1, and second drives control mould
Integrated chip in block 42 is the second integrated chip U2.
As in figure 2 it is shown, the first drive control module 41 also includes: the first resistance R1, the 3rd resistance R3, the 4th electricity
Resistance R4, the 5th resistance R5, the first electric capacity C1, the 6th resistance R6 and the 7th resistance R7.Wherein, the first resistance R1
One end be connected with power switch drive end such as IGBT drive end, and one end of the first resistance R1 is by the second resistance
R2 and first presets power supply VCC and is connected, the other end of the first resistance R1 and the input phase of the first integrated chip U1
Even, one end of the 3rd resistance R3 is preset power supply VCC with first and is connected, the other end of the 3rd resistance R3 and the first collection
The power end becoming chip U1 is connected, and the 4th resistance R4 and the 3rd resistance R3 is in parallel；One end of 5th resistance R5 and control
The first switch control terminal 81 such as IGBT1 switch control terminal of device 70 processed be connected, the other end of the 5th resistance R5 with
The control end of the first integrated chip U1 is connected, and one end of the first electric capacity C1 is connected with the other end of the 5th resistance R5,
The control end of the other end ground connection of the first electric capacity C1, one end of the 6th resistance R6 and the first power switch 31 is such as
The G of IGBT1 is the most connected, and the outfan of the other end of the 6th resistance R6 and the first integrated chip U1 is connected, the 7th electricity
Resistance R7 and the 6th resistance R6 is in parallel.
Further, as in figure 2 it is shown, the first drive control module 41 also includes the 14th resistance R14 of parallel connection, first steady
Pressure pipe ZD1 and the 3rd electric capacity C3.
In the present embodiment, as in figure 2 it is shown, the second drive control module 42 also includes: the 8th resistance R8, the 9th
Resistance R9, the tenth resistance R10, the 11st resistance R11, the second electric capacity C2, the 12nd resistance R12 and the 13rd electricity
Resistance R13.Wherein, one end of the 8th resistance R8 is connected with power switch drive end such as IGBT drive end, and the 8th
One end of resistance R8 by the second resistance R2 and first preset power supply VCC be connected, the other end of the 8th resistance R1 with
The input of the second integrated chip U2 is connected, and one end of the 9th resistance R9 is preset power supply VCC with first and is connected, the
The power end of the other end of nine resistance R9 and the second integrated chip U2 is connected, the tenth resistance R10 and the 9th resistance R9
In parallel；One end of 11st resistance R11 controls end 82 such as IGBT2 on-off control with the second switch of controller 70
End is connected, and the control end of the other end of the 11st resistance R11 and the second integrated chip U2 is connected, the second electric capacity C2's
One end is connected with the other end of the 11st resistance R11, the other end ground connection of the second electric capacity C2, the 12nd resistance R12
One end be extremely connected with the G of the control end such as IGBT2 of the second power switch 32, another of the 12nd resistance R12
End is connected with the outfan of the second integrated chip U2, and the 13rd resistance R13 and the 12nd resistance R12 is in parallel.
Further, as in figure 2 it is shown, the second drive control module 42 also includes the 15th resistance R15 of parallel connection, second steady
Pressure pipe ZD2 and the 4th electric capacity C4.
According to one embodiment of present invention, wherein, controller 70 is switched by the first switch control terminal such as IGBT1
When controlling end output high level signal, the first integrated chip U1 starts working, the first normal work of drive control module 41
The most normal output drive signal of work, the first power switch 31 such as IGBT1 drives at power switch drive end such as IGBT
On or off under the control driving signal of moved end output；Controller 70 is by the first switch control terminal such as IGBT1
During switch control terminal output low level signal, the first integrated chip U1 quits work, and the first drive control module 41 stops
Only work, the first power switch 31 such as IGBT1 quits work.
Similarly, according to another embodiment of the invention, wherein, controller 70 controls end such as by second switch
During IGBT2 switch control terminal output high level signal, the second integrated chip U2 starts working, the second drive control module
The 42 normal the most normal output drive signals of work, the second power switch 32 such as IGBT2 is in power switch drive end example
Such as on or off under the control driving signal of IGBT drive end output；Controller 70 controls end by second switch
Such as during IGBT2 switch control terminal output low level signal, the second integrated chip U2 quits work, and second drives control
Molding block 42 quits work, and the second power switch 32 such as IGBT2 quits work.
In a concrete example according to the present invention, controller 70 such as MCU is by the first switch control terminal such as
IGBT1 switch control terminal output control signal and by second switch control end such as IGBT2 switch control terminal export
The control logic of control signal can be contrary, i.e. exported by the first switch control terminal such as IGBT1 switch control terminal
During high level signal, control end such as IGBT2 switch control terminal output low level signal by second switch, by the
During one switch control terminal such as IGBT1 switch control terminal output low level signal, control end such as by second switch
IGBT2 switch control terminal output high level signal.
In sum, the control circuit of the electric cooking pot of the embodiment of the present invention is by being arranged in series one on drive circuit
Integrated chip controls to drive whether signal is applied to power switch such as IGBT, thus controls power switch such as
The duty of IGBT, it is achieved the duty of control coil disk module coil dish, therefore without using relay
Adhesive controls the duty of just energy control coil dish.
The control circuit of electric cooking pot according to embodiments of the present invention, is exported by the switch control terminal of controller and controls letter
Number the integrated chip in each drive control module is controlled whether each drive control module enters accordingly
Row work, the drive control module being operated can drive corresponding power switch to be operated such that it is able to controls phase
The duty of the coil panel module coil dish answered.Therefore, the control circuit of the electric cooking pot of the present invention is without using
Relay, thus the adhesive to relay need not be used to control the duty of just energy control coil disk module coil dish,
Avoiding the reliability that have impact on whole control circuit mechanical life of relay, circuit reliability is greatly enhanced,
And also the service life of electricity cooking pot can be extended.
Additionally, the embodiment of the present invention also proposed a kind of electricity cooking pot, it includes the control circuit of above-mentioned electric cooking pot.
Wherein, this electricity cooking pot can be the household appliances such as electric cooker, electromagnetic oven, electric pressure cooking saucepan.
The electric cooking pot of the embodiment of the present invention is because its control circuit is without using relay, thus need not use relay
Adhesive control just can the duty of control coil disk module coil dish, it is to avoid impact mechanical life of relay
The reliability of whole control circuit, is greatly improved the reliability of circuit, and therefore, the service life of electricity cooking pot also may be used
It is extended, meets the demand of user.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Person's feature is contained at least one embodiment or the example of the present invention.In this manual, the signal to above-mentioned term
Property statement be not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or
Feature can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand these embodiments can be carried out without departing from the principles and spirit of the present invention multiple change, amendment,
Replacing and modification, the scope of the present invention is limited by claims and equivalent thereof.
Claims (9)
1. the control circuit of an electric cooking pot, it is characterised in that including:
N number of coil panel module, wherein, N is the integer more than or equal to 2；
Power module, described power module is connected with described N number of coil panel module with to described N number of coil panel mould respectively
Block is powered；
In N number of power switch, each power switch in described N number of power switch and described N number of coil panel module
Each coil panel module one_to_one corresponding is connected to constitute N number of heater；
N number of drive control module, each drive control module in described N number of drive control module and described N number of merit
Each power switch one_to_one corresponding in rate switch is connected to drive described each power switch, and described each driving
Control module includes integrated chip, and the integrated chip in described each drive control module is in order to control the driving control of correspondence
Molding block；
Controller, the power switch drive end of described controller is connected with described N number of drive control module respectively, described
N number of switch control terminal of controller is corresponding with the integrated chip in described each drive control module respectively to be connected, described
Controller exports control signal to enter the integrated chip in described each drive control module by each switch control terminal
Row controls.
2. the control circuit of electricity cooking pot as claimed in claim 1, it is characterised in that when N is 2, described N
Individual power switch is the first power switch and the second power switch, and described N number of drive control module is that the first driving controls
Module and the second drive control module, the integrated chip in described first drive control module is the first integrated chip, institute
Stating the integrated chip in the second drive control module is the second integrated chip.
3. the control circuit of electricity cooking pot as claimed in claim 2, it is characterised in that described first drives control mould
Block also includes:
First resistance, one end of described first resistance is connected with described power switch drive end, and described first resistance
One end is preset power supply by the second resistance and first and is connected, the other end of described first resistance and described first integrated chip
Input be connected；
3rd resistance, one end of described 3rd resistance presets power supply with described first and is connected, another of described 3rd resistance
End is connected with the power end of described first integrated chip；
4th resistance, described 4th resistance and described 3rd resistor coupled in parallel；
5th resistance, described one end of 5th resistance is connected with the first switch control terminal of described controller, and the described 5th
The other end of resistance is connected with the control end of described first integrated chip；
First electric capacity, one end of described first electric capacity is connected with the other end of described 5th resistance, described first electric capacity
Other end ground connection；
6th resistance, one end of described 6th resistance is connected with the control end of described first power switch, described 6th electricity
The other end of resistance is connected with the outfan of described first integrated chip；
7th resistance, described 7th resistance and described 6th resistor coupled in parallel.
4. the control circuit of electricity cooking pot as claimed in claim 2, it is characterised in that described second drives control mould
Block also includes:
8th resistance, one end of described 8th resistance is connected with described power switch drive end, and described 8th resistance
One end is preset power supply by the second resistance and first and is connected, the other end of described 8th resistance and described second integrated chip
Input be connected；
9th resistance, one end of described 9th resistance presets power supply with described first and is connected, another of described 9th resistance
End is connected with the power end of described second integrated chip；
Tenth resistance, described tenth resistance and described 9th resistor coupled in parallel；
11st resistance, one end of described 11st resistance controls end with the second switch of described controller and is connected, described
The other end of the 11st resistance is connected with the control end of described second integrated chip；
Second electric capacity, one end of described second electric capacity is connected with the other end of described 11st resistance, described second electric capacity
Other end ground connection；
12nd resistance, one end of described 12nd resistance is connected with the control end of described second power switch, and described
The other end of 12 resistance is connected with the outfan of described second integrated chip；
13rd resistance, described 13rd resistance and described 12nd resistor coupled in parallel.
5. the control circuit of electricity cooking pot as claimed in claim 3, it is characterised in that described first drives control mould
Block also includes the 14th resistance, the first stabilivolt and the 3rd electric capacity of parallel connection.
6. the control circuit of electricity cooking pot as claimed in claim 4, it is characterised in that described second drives control mould
Block also includes the 15th resistance, the second stabilivolt and the 4th electric capacity of parallel connection.
7. the control circuit of electricity cooking pot as claimed in claim 3, it is characterised in that wherein,
When described controller is by described first switch control terminal output high level signal, described first integrated chip starts
Work, described first drive control module normally works, and described first power switch is defeated at described power switch drive end
On or off under the control driving signal gone out；
When described controller is by described first switch control terminal output low level signal, described first integrated chip stops
Work, described first drive control module quits work, and described first power switch quits work.
8. the control circuit of electricity cooking pot as claimed in claim 4, it is characterised in that wherein,
When described controller controls end output high level signal by described second switch, described second integrated chip starts
Work, described second drive control module normally works, and described second power switch is defeated at described power switch drive end
On or off under the control driving signal gone out；
When described controller controls end output low level signal by described second switch, described second integrated chip stops
Work, described second drive control module quits work, and described second power switch quits work.
9. an electric cooking pot, it is characterised in that include electric cooking pot as according to any one of claim 1-8
Control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200463.7A CN106162972A (en) | 2015-04-24 | 2015-04-24 | Electricity cooking pot and control circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200463.7A CN106162972A (en) | 2015-04-24 | 2015-04-24 | Electricity cooking pot and control circuit thereof |
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| CN106162972A true CN106162972A (en) | 2016-11-23 |
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| CN201510200463.7A Pending CN106162972A (en) | 2015-04-24 | 2015-04-24 | Electricity cooking pot and control circuit thereof |
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| CN202206580U (en) * | 2011-07-26 | 2012-04-25 | 佛山市顺德区美的电热电器制造有限公司 | Control circuit for continually low-power heating of induction cooker |
| CN203563220U (en) * | 2013-10-18 | 2014-04-23 | 美的集团股份有限公司 | Control circuit of electromagnetic heating device |
| CN204259200U (en) * | 2014-12-17 | 2015-04-08 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic resonance control circuit and electromagnetic heater |
| CN204539515U (en) * | 2015-04-24 | 2015-08-05 | 佛山市顺德区美的电热电器制造有限公司 | Electricity cooking pot and control circuit thereof |
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