CN206164881U - Electric heating equipment and electric rice cooker based on pulsewidth modulation - Google Patents
Electric heating equipment and electric rice cooker based on pulsewidth modulation Download PDFInfo
- Publication number
- CN206164881U CN206164881U CN201621277653.5U CN201621277653U CN206164881U CN 206164881 U CN206164881 U CN 206164881U CN 201621277653 U CN201621277653 U CN 201621277653U CN 206164881 U CN206164881 U CN 206164881U
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- heating
- pulsewidth modulation
- electric
- electric heating
- circuit
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Abstract
The utility model provides an electric heating equipment based on the pulsewidth modulation to and has an electric rice cooker of this electric heating equipment, should carry out temperature data collection and feedback through increase temperature sensor on laying the heating plate of heating wire based on electric heating equipment of pulsewidth modulation, combine occupancy controller and pulse width modulation circuit, control the average heating power of heating wire to can realize the accurate control to appointed heating temperature, solve the problem that traditional electric heating equipment is difficult to to realize that accurate accuse temperature heats, and can based on the utility model discloses electric heating equipment based on the pulsewidth modulation makes its applied scene that can be applicable to multiple difference through further design, satisfies different heating demands, the electric rice cooker that has this electric heating equipment not only can realize the electrical apparatus automated control rice of cooking, still possesses heating temperature's accurate control's advantage, during other electrical heating function product can also be used to this electric heating equipment, has fine market perspective.
Description
Technical field
The utility model is related to electric-heating technology field, more particularly to a kind of electric heating equipment based on pulsewidth modulation, with
And the electric cooker with the electric heating equipment.
Background technology
In current kitchen firing equipment, mainly there are heated by natural gas and electric power heating two ways.Set in electric power heating
In standby, and mainly there is the product of heating using microwave, Electromagnetic Heating and resistance heating three types.Wherein, although resistive is heated
Have the shortcomings that heat transfer efficiency is relatively low, but, its pair can the material of heating vessel limit few, with preferable versatility.And it is micro-
Ripple and Electromagnetic Heating have more special restriction to heating vessel material, and such as microwave can not heat metalware, Electromagnetic Heating pair
Under the efficiency of heating surface of low-permeability material, etc..Therefore, the electric heating equipment product of resistance heating class, in family, kitchen
In use it is more extensive.
In today that people's living standard is improved constantly, people require also more and more higher to taste of food.Taste of food,
Foodstuff is depended not only on, it is also closely related with cooking level, and the height of cooking level, it is often depending on the palm of the duration and degree of heating
Hold, and the grasp of the duration and degree of heating, it is often relevant with the control accurate of heating-up temperature.And for electric heating equipment, how to provide energy
Enough be easier to the electric heating equipment product of accurate temperature control, then become product possess a material impact of the market competitiveness because
Element.
Utility model content
For above-mentioned deficiency present in prior art, the utility model purpose is to provide a kind of based on pulsewidth modulation
Electric heating equipment, it can be based on pulsewidth modulation realization to specifying the control of heating-up temperature, so as to be more easily implemented accurate temperature control
Operation, solves the problems, such as that traditional electric heating equipment is difficult to accurate temperature control heating.
To solve above-mentioned technical problem, utility model purpose is realized, the technical solution adopted in the utility model is as follows：
A kind of electric heating equipment based on pulsewidth modulation, including heating dish, are laid with for as heating source in heating dish
Heating wire, temperature sensor is also equipped with the heating dish, also including pulsewidth modulation heating control circuit；The pulsewidth is adjusted
Heating control circuit processed includes rectifier circuit, filter circuit, inverter circuit, pulse-width modulation circuit and occupancy controller, institute
The input connection AC power of rectifier circuit is stated, the output end of rectifier circuit is connected with the input of inverter circuit,
The output end of inverter circuit is connected with heating wire, and the reverse frequency control end of inverter circuit is believed with the modulation of pulse-width modulation circuit
Number output end is connected, the pulse-width controlled input of pulse-width modulation circuit and the duty cycle signals output end phase of occupancy controller
Connection, the signal input part of occupancy controller is connected with the induced signal output end of temperature sensor.
In the above-mentioned electric heating equipment based on pulsewidth modulation, preferably, the heating wire for multigroup, respectively with it is inverse
The output end for becoming circuit is in parallel, and each group heating wire is coiled in heating dish in concentric ring-shaped distribution, the TEMP
Device is arranged in heating dish at the position being located therein between the heating wire of two groups of concentric ring-shaped coilings.
In the above-mentioned electric heating equipment based on pulsewidth modulation, preferably, the rectifier circuit is single-phase bridge
Rectification circuit.
In the above-mentioned electric heating equipment based on pulsewidth modulation, preferably, the single phase bridge type rectifier circu it is defeated
Enter end and be connected to AC power by transformer coupled.
In the above-mentioned electric heating equipment based on pulsewidth modulation, preferably, the inverter circuit is double using insulated gate
Bipolar transistor, the pulse-width modulation circuit is IGBT drive module.
In the above-mentioned electric heating equipment based on pulsewidth modulation, preferably, the occupancy controller is to be integrated with
The microprocessor of pulse width modulation duty control unit.
The utility model additionally provides a kind of electric cooker, including the above-mentioned electric heating equipment based on pulsewidth modulation, as
The electric heating unit of electric cooker.
Compared to prior art, technological merit of the utility model based on the electric heating equipment of pulsewidth modulation is that it passes through
Increasing temperature sensor in the heating dish for laying heating wire carries out temperature acquisition and feedback, with reference to occupancy controller and pulsewidth
Modulation circuit, is controlled by the average heating power of heating wire such that it is able to realize to specifying heating-up temperature to be precisely controlled,
Solve the problems, such as that traditional electric heating equipment is difficult to accurate temperature control heating.Electric cooker with the electric heating equipment can not only
Realize that electrical automation controls cooking rice, be also equipped with the advantage being precisely controlled of heating-up temperature.The electric heating equipment can be with
In being applied to other electric heating function products, with good market application foreground.
Description of the drawings
Fig. 1 is that structure of the utility model based on a kind of specific embodiment of electric heating equipment of pulsewidth modulation overlooks signal
Figure.
Fig. 2 is that the utility model is a kind of concrete based on pulsewidth modulation heating control circuit in the electric heating equipment of pulsewidth modulation
The structured flowchart of embodiment.
Fig. 3 is that one kind of the electric cooker with the utility model electric heating equipment is embodied as structural representation.
Specific embodiment
When flowing through electric current in electrical resistance, heat can be produced, using resistance fuel factor as thermal source, can be heated for vessel.This
Plant resistance and be also referred to as heating wire.The heat produced on heating wire is relevant with the power of resistance consumption：
P=UI=I2R； (1)
Every implication is in formula (1)：
P-heating wire average consumed power；
The resistance of R-heating wire；
U-supply voltage；
Electric current on I-heating wire.
In formula (1), if power supply is dc source, U represents the voltage of dc source, and I represents the electric current of dc source；If
Power supply is that alternating current, then U and I then represent their virtual value.The power supply for using in daily life is alternating current, virtual value
220V, the resistance of heating wire is believed that approximate constant, and thus, once when heating wire resistance fixed, the power P for consuming thereon keeps
It is constant.
If increasing switch to the current supply circuit of heating wire, Us represents the dc source powered to heating wire, and R represents heating wire
Resistance, S is switch, it is assumed that the S opening and closing of times are respectively T1 and T2, definition：
T=T1+T2； (2)
If the T in expression formula (2) is fixed value, have：
D=T2/T； (3)
D in formula (3) is dutycycle, and the span of D is [0,1], and the mean power consumed on resistance R is：
In formula (4), I is to switch electric current when S is closed on resistance R, is certain value.It can thus be seen that being accounted for by change
The empty size than D, can be to heating wire mean power [0, I2R] interval interior regulation, thus just can reach to heating-up temperature
Precise control.
Based on above-mentioned know-why, the utility model provides a kind of electric heating equipment based on pulsewidth modulation, such as Fig. 1
Shown, it includes heating dish 100, is laid with heating dish 100 for as the heating wire 200 of heating source, going back in heating dish 100
It is provided with temperature sensor 300, and the electric heating equipment and also (does not show in FIG including pulsewidth modulation heating control circuit
Go out).The structured flowchart of pulsewidth modulation heating control circuit is as shown in Fig. 2 it includes rectifier circuit, filter circuit, inversion electricity
Road, pulse-width modulation circuit and occupancy controller, the input connection AC power of the rectifier circuit, rectifier circuit
Output end is connected with the input of inverter circuit, and the output end of inverter circuit is connected with heating wire, the inversion of inverter circuit
Frequency control terminal is connected with the modulated signal output end of pulse-width modulation circuit, the pulse-width controlled input of pulse-width modulation circuit with
The duty cycle signals output end of occupancy controller is connected, the signal input part of occupancy controller and the sense of temperature sensor
Induction signal output end is connected.
The utility model is based on the electric heating equipment of pulsewidth modulation, and its course of work is：AC power is by rectifier bridge electricity
Road is rectified into direct current, and after filtering after circuit, being transformed into frequency and dutycycle by inverter circuit can connect within the specific limits
Continue adjustable single phase ac electricity output to heating wire, this is exported can regard as with certain frequency to the single-phase alternating current of heating wire
Rate carries out the direct current of on/off switching, and when being powered, heating wire has electric current to pass through, and heating wire produces heat, when power is off electric heating
Line no current passes through, and heating wire does not produce heat, and then by occupancy controller by controlling what pulse-width modulation circuit was exported
The dutycycle of pulse-width signal and realize to inverter circuit output single-phase alternating current dutycycle and frequency adjusted, from
And reach the heating mean power of control heating wire, realize the purpose that heating-up temperature is adjusted；Simultaneously as also installing in heating dish
There is temperature sensor, can detect in real time be heated in heating dish the temperature of vessel, and feed back to occupancy controller, therefore account for
It is empty to be compared with the real time temperature of temperature sensor feedback according to the heating-up temperature that its setting is specified than controller, adjust it
The duty cycle signals of output, so as to more accurately control the requirement that heating wire reaches specified heating-up temperature.
In electric heating equipment of the utility model based on pulsewidth modulation, when being embodied as, the heating wire in heating dish can
So that using multigroup design, each group heating wire is in parallel respectively with the output end of inverter circuit, to carry to each group heating wire
For supply voltage in a balanced way, and as a kind of preferred layout type, as shown in figure 1, each group heating wire 200 can be designed being in
Concentric ring-shaped distribution is coiled in heating dish 100, while the design and installation of temperature sensor 300 is located at it in heating dish 100
In the coiling of two groups of concentric ring-shapeds heating wire between position at.The benefit of so design is that multigroup heating wire is in concentric circles
Annular distribution is coiled in heating dish, forms a specific thermal treatment zone, and is powered in a balanced way because each group heating wire possesses
Voltage, can cause the heating uniformity at each position in the thermal treatment zone good, while temperature sensor position can
Accurately detect the temperature conditions of the thermal treatment zone, there is provided accurate temperature feedback information.Certainly, heating wire and temperature sensor are adding
Layout type in hot plate can also adopt other designs, as long as disclosure satisfy that the tool of temperature feedback detection and computer heating control
Body demand.
The concrete application structure of temperature sensor, then can adopt the armouring copper thermistor in heating dish, then Combined with Radiotherapy
The form of big circuit realizing, temperature sensor output voltage can be amplified to into 0 using electric bridge and differential amplifier circuit～
5 volts of scopes, it is possible to so that the measurement temperature scope of temperature sensor reaches -50 DEG C to+150 DEG C.If necessary to design temperature
The measurement temperature of sensor is higher than 150 DEG C, then its measurement resistance can adopt platinum resistance thermometer sensor,.
As in pulsewidth modulation heating control circuit, rectifier circuit can adopt single phase bridge type rectifier circu, and can
AC power is connected to by transformer coupled with the input for designing single phase bridge type rectifier circu, to realize that transformation is changed.
Inverter circuit can (Insulated Gate Bipolar Transistor, be abbreviated as using insulated gate bipolar transistor
IGBT), correspondingly, pulse-width modulation circuit then can be designed as IGBT drive module, and occupancy controller can then be designed and adopted
With the microprocessor for being integrated with pulse width modulation duty control unit, such as conventional PIC16F877A type microprocessors, AVR
The single-chip microcomputer that Mega series microprocessors etc. are 8, or the 32-bit microprocessor of STM32 series etc., according to practical situations
Demand and determine；Since so, microprocessor just can control IGBT drive module by way of photoelectric coupling, finally reach
The function of pulse width modulation controlled, the more stable reliability of control process are realized to control IGBT break-makes, and insulated gate bipolar is brilliant
The fault rate of body pipe is low, long service life, so as to contribute to lifting the resistance to overturning of the utility model electric heating equipment product
Energy.
Electric heating equipment of the utility model based on pulsewidth modulation, can also be various to be applied to by further design
Different application scenarios.For example, the temperature control curve for storing various different heating patterns can be preset in its occupancy controller,
And in electric heating equipment increase man-machine interaction display unit, for example digital display tube with input button integrated unit, touch
Screen input display unit etc. is touched, for providing the selection operation of presentation of information and different heating pattern, and certain heating is selected
After pattern, occupancy controller is just according to the real-time specified heating temperature for adjusting not in the same time of temperature control curve of corresponding heating mode
Angle value, and compare with the real time temperature of temperature sensor feedback, the computer heating control that heating-up temperature changes with time graph is realized,
And also further can be performed using pid control algorithm or FUZZY ALGORITHMS FOR CONTROL in occupancy controller specify plus
Contrast calculation process between hot temperature and the real time temperature of temperature sensor feedback, so as to further improve with temperature control curve
Carry out the precision of heating-up temperature regulation.Meanwhile, the utility model is based on the heating wire in the electric heating equipment of pulsewidth modulation also
Different specifications can be selected according to actual demand.Since so, the utility model is set based on the electrical heating of pulsewidth modulation
It is standby, it becomes possible to suitable for various different application scenarios；For example, pre-set in electric heating equipment for chafing dish heated mould
Formula, cooking heating mode, the different temperature control curves of boiling heating mode, so as to control automatically when user selects different heating pattern
The heating-up temperature of different periods processed, compared to traditional heating equipment, just need not re-recognize for the temperature of the whole heating process of control
Adjust, and also can further combine some intelligent, Functional Designs of Internet of Things networking, such as voice broadcast menu and stream
Journey, selected by the long-range computer heating control of networked realization and heating mode, etc..
Additionally, the utility model is also applied to other electric heating functions based on the electric heating equipment of pulsewidth modulation producing
In product.For example, the utility model can apply to electric cooker based on the electric heating equipment of pulsewidth modulation, add as the electricity of electric cooker
Hot cell.As a kind of specific embodiment of the electric cooker with the electric heating equipment, as shown in figure 3, it includes that overall is in bucket
The entirety arranged in pot 2 of the shape upper end with pot cover 1, the inner chamber on the top of pot 2 is in the inner bag 3 of tubbiness and is arranged in pot
Electric heating unit, the electric heating unit be utility model based on pulsewidth modulation electric heating equipment, electric heating unit include position
In the heating dish 4 that the laminating of inner bag lower section is arranged, wherein, the bottom surface of the inner bag 3 middle part is provided with water hole, water hole bottom patch
Closing linking has an outlet pipe 5 for being fixed on pot straight down, and electromagnetic valve switch 6 is provided with outlet pipe 5, and heating dish 4 sets
The surrounding of outlet pipe 5 is placed in, also installation settings has a meal ware 7 in inner bag 3, meal ware 7 includes a column and positioned at column bottom
Filter screen, distillation space is left between the lower section of meal ware 7 and inner bag inner bottom surface.So, when cooking, rice is put in meal ware, closes
The electromagnetic valve switch closed on outlet pipe, is subsequently adding water and enters inner bag, floods the height of rice.Open electric heating unit and be heated to boiling
Rise, then open electromagnetic valve switch, release a part of thin rice gruel, stay a part of thin rice gruel in inner bag, continue to heat, until meal is steamed
It is ripe.Drip rice boiling is achieved in that, easy to operate with simple structure, time saving and energy saving advantage, the thin rice gruel of releasing can be collected
It is edible.
In the present embodiment, also there is the lower chamber positioned at bottom in the pot 2, a rice is shelved with lower chamber
Soup container 8, the lower end of outlet pipe 5 is right against the setting of the upper port of thin rice gruel container 8, and lower chamber side opens up and is equipped with chamber door and supplies thin rice gruel
Container 8 takes out.So, facilitate thin rice gruel to collect thin rice gruel container directly to eat.During enforcement, outlet pipe directly exhausting type can also set
Put.
In the present embodiment, interior gallbladder intracavity lower surface middle part has circle drip ring 9 upwards, and water hole is located at drip ring 9
It is interior.So, release thin rice gruel when, retain part thin rice gruel automatically by drip ring and steamed rice completed in inner bag, it is ensured that thin rice gruel it is quantitative
Retention, it is ensured that the reliability of follow-up steamed rice.When implementing certainly, it is also possible to right by being realized by the switch control rule to electromagnetic switch valve
The retention of thin rice gruel.
In the present embodiment, the circumferential surface of internal cavity of meal ware 7 has the draw-in groove of a circle indent, card in draw-in groove near upper end position
Connect and be provided with a bamboo filter disc 10, the both sides of the peripheral outer wall of meal ware 7 are radially horizontally outward extended to be had rotating shaft and lean on
Rotating shaft is installed in rotation in the inner chamber on pot top, and rotating shaft controlling organization is additionally provided with pot.As such, it is possible to cook
When rice be immersed in water by meal ware cook, during steamed rice, meal ware can be controlled and overturn 180 °, rice grain is dropped into into bamboo filter disc
In realize steamed rice, so remain the bamboo fragrance of steamed rice so that steamed rice grain more it is good to eat also more conforms to part like bamboo
Steam the eating habit of the person of missing old times or old friends of cylinder steamed rice.When bamboo filter disc is provided with meal ware, inner bag can be fixed as one with pot
Arrange, facilitate the installation of rotating shaft.When implementing certainly, it is also possible to be not provided with bamboo filter disc, in this case can by inner bag
Releasably insert and be shelved in pot.
In the present embodiment, the meal ware 7 is obtained for stainless steel material.So, convenient boiling in water is boiled.Certainly, during enforcement,
Can also be using other materials such as ceramic materials.
In the present embodiment, the rotating shaft controlling organization includes a stepper motor 11 being located in pot, stepper motor 11
It is connected and is controlled with the control module in pot, the output shaft of stepper motor 11 and rotating shaft transmission connects.So, by stepping
Motor facilitates the upset of control realization meal ware.When implementing certainly, it would however also be possible to employ other rotating shaft controlling organizations, such as directly set
Put a rotating handles for extending pot to be manually controlled.In addition, when implementing, can be straight between stepper motor and rotating shaft
Connect connected, it is also possible to make its convenient control to adjust gearratio by gear drive connection.
In the present embodiment, the control module rocks control circuit unit including one, for controlling stepper motor output
Crankmotion.As such, it is possible in steamed rice, reciprocal vibration can be produced with meal ware or be rocked, allow the grain of rice is full and uniform to be received
Heat, expansion is full, drastically increases the mouthfeel and quality of the rice for steaming.
In the present embodiment, the electromagnetic valve switch 6 is connected with heating dish 4 with control module.
In sum, it can be seen that electric heating equipment of the utility model based on pulsewidth modulation is by laying heating wire
Heating dish on increase temperature sensor carry out temperature acquisition and feedback, it is right with reference to occupancy controller and pulse-width modulation circuit
The average heating power of heating wire is controlled by such that it is able to realize, to specifying heating-up temperature to be precisely controlled, solving tradition
Electric heating equipment is difficult to the problem of accurate temperature control heating, and also can be based on electricity of the utility model based on pulsewidth modulation
Firing equipment can be applied to various different application scenarios by further design, meet different demand for heat,
With good market application foreground.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model has been described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, without deviating from the objective and model of technical solutions of the utility model
Enclose, it all should cover in the middle of right of the present utility model.
Claims (7)
1. a kind of electric heating equipment based on pulsewidth modulation, including heating dish, is laid with for as heating source in heating dish
Heating wire, it is characterised in that temperature sensor is also equipped with the heating dish, also including pulsewidth modulation heating control circuit；
The pulsewidth modulation heating control circuit includes rectifier circuit, filter circuit, inverter circuit, pulse-width modulation circuit and dutycycle
Controller, the input connection AC power of the rectifier circuit, the output end of rectifier circuit and the input of inverter circuit
End is connected, and the output end of inverter circuit is connected with heating wire, reverse frequency control end and the pulsewidth modulation electricity of inverter circuit
The modulated signal output end on road is connected, and the pulse-width controlled input of pulse-width modulation circuit is believed with the dutycycle of occupancy controller
Number output end is connected, and the signal input part of occupancy controller is connected with the induced signal output end of temperature sensor.
2. electric heating equipment according to claim 1 based on pulsewidth modulation, it is characterised in that the heating wire for multigroup,
It is in parallel with the output end of inverter circuit respectively, and each group heating wire is coiled in heating dish in concentric ring-shaped distribution, it is described
Temperature sensor is arranged in heating dish at the position being located therein between the heating wire of two groups of concentric ring-shaped coilings.
3. the electric heating equipment of pulsewidth modulation is based on according to claim 1, it is characterised in that the rectifier circuit is single
Phase bridge rectifier.
4. the electric heating equipment of pulsewidth modulation is based on according to claim 3, it is characterised in that the single-phase bridge rectification electricity
The input on road is connected to AC power by transformer coupled.
5. the electric heating equipment of pulsewidth modulation is based on according to claim 1, it is characterised in that the inverter circuit is using exhausted
Edge grid bipolar transistor, the pulse-width modulation circuit is IGBT drive module.
6. electric heating equipment according to claim 1 based on pulsewidth modulation, it is characterised in that the occupancy controller is
It is integrated with the microprocessor of pulse width modulation duty control unit.
7. a kind of electric cooker, it is characterised in that include adding based on the electricity of pulsewidth modulation as any one of claim 1 ~ 6
Hot equipment, as the electric heating unit of electric cooker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621277653.5U CN206164881U (en) | 2016-11-25 | 2016-11-25 | Electric heating equipment and electric rice cooker based on pulsewidth modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621277653.5U CN206164881U (en) | 2016-11-25 | 2016-11-25 | Electric heating equipment and electric rice cooker based on pulsewidth modulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164881U true CN206164881U (en) | 2017-05-10 |
Family
ID=58661173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621277653.5U Expired - Fee Related CN206164881U (en) | 2016-11-25 | 2016-11-25 | Electric heating equipment and electric rice cooker based on pulsewidth modulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164881U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213228A (en) * | 2017-07-03 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, device and electromagnetic heating cookware |
| CN109419311A (en) * | 2017-09-02 | 2019-03-05 | 张树刚 | Full-automatic tradition rice electric cooker |
| CN109561519A (en) * | 2017-09-25 | 2019-04-02 | 佛山市顺德区美的电热电器制造有限公司 | Heating control apparatus and cooking apparatus |
| CN110613309A (en) * | 2018-06-20 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Control method and control device of cooking equipment, storage medium and cooking equipment |
| CN113508640A (en) * | 2019-03-04 | 2021-10-15 | 伊莱克斯家用电器股份公司 | Power supply circuit for cooking equipment and cooking equipment |
| CN113853035A (en) * | 2021-11-09 | 2021-12-28 | 陕西科技大学 | Device and method for improving temperature control precision |
-
2016
- 2016-11-25 CN CN201621277653.5U patent/CN206164881U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213228A (en) * | 2017-07-03 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Method for heating and controlling, device and electromagnetic heating cookware |
| CN109213228B (en) * | 2017-07-03 | 2022-04-15 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method and device and electromagnetic heating cooker |
| CN109419311A (en) * | 2017-09-02 | 2019-03-05 | 张树刚 | Full-automatic tradition rice electric cooker |
| CN109561519A (en) * | 2017-09-25 | 2019-04-02 | 佛山市顺德区美的电热电器制造有限公司 | Heating control apparatus and cooking apparatus |
| CN110613309A (en) * | 2018-06-20 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Control method and control device of cooking equipment, storage medium and cooking equipment |
| CN113508640A (en) * | 2019-03-04 | 2021-10-15 | 伊莱克斯家用电器股份公司 | Power supply circuit for cooking equipment and cooking equipment |
| CN113853035A (en) * | 2021-11-09 | 2021-12-28 | 陕西科技大学 | Device and method for improving temperature control precision |
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Granted publication date: 20170510 Termination date: 20191125 |