CN106033228B - The power conditioning circuitry and cooking apparatus of resistance-type hot plate - Google Patents
The power conditioning circuitry and cooking apparatus of resistance-type hot plate Download PDFInfo
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- CN106033228B CN106033228B CN201510117905.1A CN201510117905A CN106033228B CN 106033228 B CN106033228 B CN 106033228B CN 201510117905 A CN201510117905 A CN 201510117905A CN 106033228 B CN106033228 B CN 106033228B
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Abstract
The invention provides a kind of power conditioning circuitry and cooking apparatus of resistance-type hot plate, wherein, the power conditioning circuitry of resistance-type hot plate, including：Power module；Resistance-type hot plate module, including at least one resistance-type hot plate and auxiliary resistance formula hot plate, resistance-type hot plate module are connected to power module；Power driver module, is connected to resistance-type hot plate module, and power driver module is used to control whether resistance-type hot plate module is heated；Sampling module, is connected to power module, and sampling module is used to sample the power supply signal of power module；Microprocessor, is connected to power driver module and sampling module, and microprocessor controls the working condition of power driver module with the power of real-time regulation resistance formula hot plate module and the bearing power of auxiliary resistance formula hot plate according to power supply signal.By technical solution of the present invention, the effect that microprocessor controls power driver module according to the output signal of sampling module is realized, increases the power bracket of resistance-type hot plate module.
Description
Technical field
The present invention relates to cooking apparatus technical field, in particular to a kind of power conditioning circuitry of resistance-type hot plate
With a kind of cooking apparatus.
Background technology
In the related art, the cooking apparatus of resistance-type hot plate is provided with the course of the work, typically by relay
The working time of resistance-type hot plate is controlled, and then determine the mean power of resistance-type hot plate, but above-mentioned control mode and electricity
Line structure has the following disadvantages：
(1) when by Control resistance-type hot plate, because relay is Mechanical course, so its switching process phase
To slow, it is impossible to realize the accurate control to resistance-type hot plate；
(2) some relays, can only be by adjusting turn-off time of drive circuit when being controlled using drive circuit
Carry out the turn off process of regulating relay, and then determine the mean power of resistance-type hot plate.
Therefore, how to design it is a kind of can regulation resistance formula hot plate in real time power conditioning circuitry to realize cooking apparatus
The effect of heating power real-time, tunable turns into technical problem urgently to be resolved hurrily.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of power conditioning circuitry of resistance-type hot plate.
It is another object of the present invention to propose a kind of cooking apparatus.
To achieve the above object, a kind of embodiment according to the first aspect of the invention, it is proposed that work(of resistance-type hot plate
Rate adjusts circuit, including：Power module；Resistance-type hot plate module, including auxiliary resistance formula hot plate and at least one resistance-type heat
Disk, the resistance-type hot plate module are connected to the power module；Power driver module, it is connected to the resistance-type hot plate mould
Block, the power driver module are used to control whether the resistance-type hot plate module is heated；Sampling module, it is connected to described
Power module, the sampling module are used to sample the power supply signal of the power module；Microprocessor, it is connected to described
Power driver module and the sampling module, the microprocessor control the power driver module according to the power supply signal
Working condition to adjust the bearing power of the power of the resistance-type hot plate module and the auxiliary resistance formula hot plate in real time.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being sequentially connected power module, electricity
Resistive hot plate module, power driver module, sampling module and microprocessor, realize output of the microprocessor according to sampling module
Signal controls the effect of power driver module, and then realizes the Real-time Feedback to the power of resistance-type hot plate and regulation in real time,
In addition, by setting resistance-type hot plate and auxiliary resistance formula hot plate to increase resistance-type hot plate module in resistance-type hot plate module
Power bracket.
Specifically, when the power supply signal of power module loads on resistance-type hot plate module, power driver module cut-off state
When resistance-type hot plate be not operated, when microprocessor exports high level pulse, electricity during power driver module conducting state
Resistive hot plate is started working, and the power of resistance-type hot plate depends on power supply signal, therefore, by the way that power supply signal is fed back into Wei Chu
Device is managed, the power of last heating process can be determined according to power supply signal as reference power, and further according to reference
Power and the mode of operation of setting determine the power of current heating process, that is, realize the Real-time Feedback to power and real-time tune
Section.
It is worth it is emphasized that being provided with comparator in microprocessor, the trigger signal of comparator controls auxiliary resistance
The working condition of formula hot plate, specifically, when the performance number of user's setting is higher than the rated power of resistance-type hot plate, comparator is sent out
Go out trigger signal, control auxiliary resistance formula hot plate and resistance-type hot plate to be operated simultaneously, be less than in the performance number of user's setting
During the rated power of resistance-type hot plate, only resistance-type hot plate is controlled to be operated, therefore, the operating power of resistance-type hot plate module
Scope is increased by auxiliary resistance formula hot plate, can more meet the demand for heat of user.
Whether the coil panel of detection cooking apparatus according to the abovementioned embodiments of the present invention assembles correct method, can be with
With following technical characteristic：
According to one embodiment of present invention, the auxiliary resistance formula hot plate includes：Aid in resistive heater；Auxiliary heating
Power driver module, it is connected between the auxiliary resistive heater and the microprocessor, the auxiliary heating power driving
Module determines whether to drive the auxiliary resistive heater to heat according to the output signal of the microprocessor.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting auxiliary heating power to drive
Module, realize the real-time control of the power to auxiliary resistance formula hot plate.
Wherein, comparator, the work of the trigger signal control auxiliary resistive heater of comparator are provided with microprocessor
State, specifically, when the performance number of user's setting is higher than the rated power of resistance-type hot plate, comparator sends trigger signal, controls
System auxiliary resistive heater and resistance-type hot plate are operated simultaneously, are less than the volume of resistance-type hot plate in the performance number of user's setting
When determining power, only resistance-type hot plate is controlled to be operated, therefore, the operating power range of resistance-type hot plate module is added by auxiliary
Hot water radiation wire increases, and can more meet the demand for heat of user.
According to one embodiment of present invention, auxiliary heating power drive module includes：Auxiliary power switchs, and is connected to institute
State microprocessor；Relay unit, including at least one relay, at least one relay are connected to the auxiliary power
Between switch and the auxiliary resistive heater.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by set auxiliary power switch and after
Electric appliance unit, the accurate control of auxiliary heating power drive module is ensure that, specifically, pass through auxiliary power switch and relay
The two-stage series connection switch control of unit, the situation of false triggering caused by avoiding the noise pulses such as signal fluctuation and ripple current.
According to one embodiment of present invention, the sampling module includes：Divider resistance unit, including be connected in series
One resistance and second resistance, the divider resistance unit are connected between the power module and the ground wire, first electricity
The common port of resistance and the second resistance is connected to the microprocessor as the output end of the power supply signal.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting partial pressure in sampling module
Resistance unit, when being voltage for power supply signal, by the voltage division processing of two resistance, obtain the voltage suitable for microprocessor
Sampled signal, and then the reference power of heating process next time is determined, realize the accurate regulation to resistance-type hot plate.
Wherein, consider in circuit reliability, electrochemical capacitor and shunt capacitance can be increased on divider resistance to avoid
Influence of the ripple current isopulse noise to sampled signal.
According to one embodiment of present invention, the microprocessor also includes：Temperature control module, including temperature setting unit and
Temperature sensing unit, wherein, the temperature setting unit is used to preset operating temperature value, and the temperature sensing unit is used to sense
The actual temperature value of at least one resistance-type hot plate；Power conversion module, is connected to the temperature control module, and the power turns
Mold changing block is used for the ginseng that resistance-type hot plate module is determined according to the difference of the default operating temperature value and the actual temperature value
Examine power；Power computation module, the sampling module is connected to, for being calculated as the power supply signal of sampling to compensate power.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting temperature control in the microprocessor
Module, power conversion module and power computation module, realize the accurate regulation to the power of resistance-type hot plate.
Specifically, user can be set by temperature setting unit expected from temperature value (i.e. default operating temperature value), temperature
Degree sensing unit senses the actual temperature value of resistance-type hot plate in real time, thereby determines that default operating temperature value and actual temperature value
Difference, and the sequence of temperature value difference generation at different moments is recorded, it is each in temperature sequence of differences based on experience value
The weighted value of temperature value, and then the weight for generating temperature gap sequence adds and is worth, according to the power and power of a preceding heating process
Again plus and value determine theoretical power (horse-power) value, then according to power supply signal determine compensation power, finally according to theoretical power (horse-power) value and supplement
Power determines the final output power of resistance-type hot plate.
It is worthy of note that microprocessor according to the above method obtain final output power after, it is necessary to be converted into
The dutycycle of bandwidth modulation pulse, and then determine power of the resistance-type hot plate in some power supply signal.
According to one embodiment of present invention, the microprocessor includes：Modulation module, the input of the modulation module
The power conversion module and the power computation module are connected to determine the dutycycle of modulation bandwidth pulse, the modulation mould
The output end of block is connected to the power driver module with by power driver module described in the modulation bandwidth Pulse Width Control
Power.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being set in the microprocessor
Modulation module, the accurate regulation to power driver module is realized, wherein, power driver module rapidly switches off and turned on decision
Quickly switch control can be carried out to resistance-type heating dish.
According to one embodiment of present invention, the power driver module also includes：Power switch unit, including at least one
Individual transistor switch, any one transistor switch at least one transistor switch are connected to the resistance-type heat
Between disk and ground wire, the base stage of any one transistor switch is connected to the output end of the microprocessor.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being set in power driver module
Transistor switch, and be connected between the output end of microprocessor and resistance-type hot plate, pass through the output signal of microprocessor
The conducting state of controlling transistor switch, and then the power of resistance-type hot plate is controlled, cause to miss so as to avoid the fluctuation of signal
Operation, and then ensure that the reliability of circuit.
According to one embodiment of present invention, the power module includes：Input protection circuit, including it is connected to power frequency electric
The zero line and live wire in source, piezo-resistance is connected between the zero line and the live wire.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by set input protection circuit and
Piezo-resistance is set in input protection circuit, realizes pressure limiting and/or current limliting processing to power frequency supply, and then ensure that electricity
The reliability on road.
According to one embodiment of present invention, protection electric capacity is connected between the zero line and the live wire.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being set between zero line and live wire
Electric capacity is protected, the effect of exchange isolation is served to power frequency supply, further ensure that the reliability of circuit.
According to one embodiment of present invention, the power module also includes：Current rectifying and wave filtering circuit, it is connected to the input
It is that rectification filtering module is used to enter to inputting the resistance-type hot plate module between protection circuit and the resistance-type hot plate module
The processing of row rectifying and wave-filtering.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting rectification in power module
Filter circuit, Unidirectional direct-current load is easily obtained, and then stable power supply signal is provided for resistance-type hot plate.
Embodiment according to the second aspect of the invention, it is proposed that a kind of cooking apparatus, including：Any one technology as described above
The power conditioning circuitry of resistance-type hot plate described in scheme.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 shows the structural representation of the power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Fig. 1 shows the structural representation of the power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention.
As shown in figure 1, the power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, including：Power module
1；Resistance-type hot plate module 2, including auxiliary resistance formula hot plate 22 and at least one resistance-type hot plate 21, the resistance-type hot plate mould
Block is connected to the power module 1；Power driver module 3, it is connected to the resistance-type hot plate module 2, the power drive mould
Block 3 is used to control whether the resistance-type hot plate module 2 is heated；Sampling module 4, the power module 1 is connected to, it is described
Sampling module 4 is used to sample the power supply signal of the power module 1；Microprocessor 5, it is connected to the power drive mould
Block 3 and the sampling module 4, the microprocessor 5 control the work shape of the power driver module 3 according to the power supply signal
State to adjust the bearing power of the power of the resistance-type hot plate 21 and the auxiliary resistance formula hot plate 21 in real time.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being sequentially connected power module 1, electricity
Resistive hot plate module 2, power driver module 3, sampling module 4 and microprocessor 5, microprocessor 5 is realized according to sampling module 4
Output signal control 3 pieces of mould of driving effect, and then realize to the Real-time Feedback of the power of resistance-type hot plate 21 and in real time
Regulation, in addition, by setting resistance-type hot plate 21 and auxiliary resistance formula hot plate 22 to increase resistance in resistance-type hot plate module 2
The power bracket of formula hot plate module 2.
Specifically, when the power supply signal of power module 1 loads on resistance-type hot plate module 21, power driver module 3 ends
Resistance-type hot plate 21 is not operated during state, and when microprocessor 5 exports high level pulse, power driver module 3 turns on
Resistance-type hot plate 21 is started working during state, and the power of resistance-type hot plate 21 depends on power supply signal, therefore, by the way that power supply is believed
Number microprocessor 5 is fed back to, the power of last heating process can be determined according to power supply signal as reference power, and enter
One step determines the power of current heating process according to the mode of operation of reference power and setting, that is, realizes to the real-time anti-of power
Feedback and in real time regulation.
It is worth it is emphasized that being provided with comparator in microprocessor 5, the trigger signal of comparator controls auxiliary resistance
The working condition of formula hot plate 22, specifically, compare when the performance number of user's setting is higher than the rated power of resistance-type hot plate 21
Device sends trigger signal, and control auxiliary resistance formula hot plate 22 and resistance-type hot plate 21 are operated simultaneously, in the work(of user's setting
When rate value is less than the rated power of resistance-type hot plate 21, only resistance-type hot plate 21 is controlled to be operated, therefore, resistance-type hot plate mould
The operating power range of block 2 is increased by auxiliary resistance formula hot plate 22, can more meet the demand for heat of user.
Whether the coil panel of detection cooking apparatus according to the abovementioned embodiments of the present invention assembles correct method, can be with
With following technical characteristic：
According to one embodiment of present invention, the auxiliary resistance formula hot plate 22 includes：Aid in resistive heater；Auxiliary adds
Thermal power drive module, it is connected between the auxiliary resistive heater and the microprocessor 5, the auxiliary heating power drives
Dynamic model root tuber determines whether to drive the auxiliary resistive heater to heat according to the output signal of the microprocessor 5.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting auxiliary heating power to drive
Module, realize the real-time control of the power to auxiliary resistance formula hot plate.
Wherein, comparator, the work of the trigger signal control auxiliary resistive heater of comparator are provided with microprocessor 5
State, specifically, when the performance number of user's setting is higher than the rated power of resistance-type hot plate, comparator sends trigger signal, controls
System auxiliary resistive heater and resistance-type hot plate 21 are operated simultaneously, are less than resistance-type hot plate in the performance number of user's setting
During rated power, only resistance-type hot plate 21 is controlled to be operated, therefore, the operating power range of resistance-type hot plate module 2 passes through
Auxiliary resistive heater increases, and can more meet the demand for heat of user.
According to one embodiment of present invention, auxiliary heating power drive module includes：Auxiliary power switch 24, is connected to
The microprocessor 5；Relay unit, including at least one relay 23, at least one relay 23 are connected to described
Between auxiliary power switch 24 and the auxiliary resistive heater.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting auxiliary power to switch 24 Hes
Relay unit, ensure that auxiliary heating power drive module accurate control, specifically, by auxiliary power switch 24 and after
The two-stage series connection switch control of electric appliance unit, the feelings of false triggering caused by avoiding the noise pulses such as signal fluctuation and ripple current
Condition.
In addition, the power conditioning circuitry of resistance-type hot plate according to the above embodiment of the present invention, can also have following attached
The technical characteristic added：
According to one embodiment of present invention, the sampling module 4 includes：Divider resistance unit, including be connected in series
First resistor 41 and second resistance 42, the divider resistance unit is connected between the power module 1 and the ground wire, described
The common port of first resistor 41 and the second resistance 42 is connected to the microprocessor as the output end of the power supply signal
5。
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, divided by being set in sampling module 4
Piezoresistance unit, when being voltage for power supply signal, by the voltage division processing of two resistance, obtain suitable for microprocessor 5
Voltage sampling signal, and then the reference power of heating process next time is determined, realize the accurate regulation to resistance-type hot plate.
Wherein, in circuit reliability consider, can increase on divider resistance electrochemical capacitor 43 and shunt capacitance 44 with
Avoid influence of the ripple current isopulse noise to sampled signal.
According to one embodiment of present invention, the microprocessor 5 also includes：Temperature control module (not shown in figure 1), including
Temperature setting unit and temperature sensing unit, wherein, the temperature setting unit is used to preset operating temperature value, the temperature sense
Survey the actual temperature value that unit is used to sense at least one resistance-type hot plate；Power conversion module, it is connected to the temperature control
Module, the power conversion module are used to determine resistance according to the difference of the default operating temperature value and the actual temperature value
The reference power of formula hot plate module 2；Power computation module, the sampling module 4 is connected to, based on the power supply signal by sampling
Calculate to compensate power.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting temperature control in the microprocessor
Module, power conversion module and power computation module, realize the accurate regulation to the power of resistance-type hot plate.
Specifically, user can be set by temperature setting unit expected from temperature value (i.e. default operating temperature value), temperature
Degree sensing unit senses the actual temperature value of resistance-type hot plate in real time, thereby determines that default operating temperature value and actual temperature value
Difference, and the sequence of temperature value difference generation at different moments is recorded, it is each in temperature sequence of differences based on experience value
The weighted value of temperature value, and then the weight for generating temperature gap sequence adds and is worth, according to the power and power of a preceding heating process
Again plus and value determine theoretical power (horse-power) value, then according to power supply signal determine compensation power, finally according to theoretical power (horse-power) value and supplement
Power determines the final output power of resistance-type hot plate.
It is worthy of note that microprocessor 5 according to the above method obtain final output power after, it is necessary to be converted into
The dutycycle of bandwidth modulation pulse, and then determine power of the resistance-type hot plate in some power supply signal.
According to one embodiment of present invention, the microprocessor 5 includes：Modulation module, the input of the modulation module
End is connected to the power conversion module and the power computation module to determine the dutycycle of modulation bandwidth pulse, the modulation
The output end of module is connected to the power driver module 3 with by power driver module described in the modulation bandwidth Pulse Width Control
3 power.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being set in the microprocessor 5
Modulation module is put, realizes the accurate regulation to power driver module 3, wherein, power driver module 3 rapidly switching off and turning on
Quickly switch control can be carried out to resistance-type heating dish by determining.
According to one embodiment of present invention, the power driver module 3 includes：Power switch unit, including at least one
Individual transistor switch 31, any one transistor switch 31 at least one transistor switch 31 are connected to an electricity
Between resistive hot plate and ground wire, the base stage of any one transistor switch 31 is connected to the output end of the microprocessor 5.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being set in power driver module 3
Transistor switch 31 is put, and is connected between the output end of microprocessor 5 and resistance-type hot plate, passes through the defeated of microprocessor 5
Go out the conducting state of signal controlling transistor switch 31, and then control the power of resistance-type hot plate so as to avoiding the fluctuation of signal
Maloperation is caused, and then ensure that the reliability of circuit.
According to one embodiment of present invention, the power module 1 includes：Input protection circuit, including it is connected to power frequency
The zero line and live wire of power supply, are connected with piezo-resistance 11 between the zero line and the live wire.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by set input protection circuit and
Piezo-resistance 11 is set in input protection circuit, realizes pressure limiting and/or current limliting processing to power frequency supply, and then ensure that
The reliability of circuit.
According to one embodiment of present invention, protection electric capacity 12 is connected between the zero line and the live wire.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being set between zero line and live wire
Electric capacity 12 is protected, the effect of exchange isolation is served to power frequency supply, further ensure that the reliability of circuit.
According to one embodiment of present invention, the power module 1 also includes：Current rectifying and wave filtering circuit, it is connected to described defeated
Enter between protection circuit and the resistance-type hot plate module, be that rectification filtering module 13 is used for inputting the resistance-type hot plate mould
Block carries out rectifying and wave-filtering processing.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by setting rectification in power module
Filter circuit 13, Unidirectional direct-current load is easily obtained, and then stable power supply signal is provided for resistance-type hot plate.
The calculating process of the power of the cooking apparatus according to the present invention is specifically described with reference to Fig. 1.
The calculation formula of the power of cooking apparatus is:
U (k)=U (k-1)+Kp [E (k)-E (k-1)]+KiE (k)+Kd [E (k) -2E (k-1)+E (k-2)],
Wherein, U (K) refers to the power calculated, and U (K-1) refers to that last power output .E (k) refers to current measurement temperature
The difference of angle value and set temperature value, E (k-1), E (K-2) refer to last time and the upper last measurement temperature calculated and design temperature
Difference, Kp, Ki, Kd is ratio, differential, integral coefficient, rule of thumb scope Kp:1.6-5,Ki:3-10,Kd:0.5-3, need
According to varying environment and structural adjustment.Calculate corresponding power Pc, because line voltage value can be varied from different regions, this
There can be certain influence to hot plate power, for more precise control of temperature, power compensating value is corresponded to further according to current line voltage V
Pv, Pv=(V-220) * 8. draws final output power P=Pc- Pv。
In addition, after sampling module 4 carries out voltage division processing to line voltage, draw between first resistor 41 and second resistance 42
Go out terminal and be connected to microprocessor 5, the power supply signal that now microprocessor 5 obtains is converted into reference power Pc, used in addition, obtaining
Family sets temperature T to be heated1, and it is T that temperature sensing module, which measures the temperature of resistance-type stone or metal plate for standing a stove on as a precaution against fire,2, it is Δ T to obtain temperature gap,
Untreated 5 calculate Power Theory value P according to Δ Tt, so, the power finally determined is：
P=Pt-Pc,
Microprocessor 5 determines the dutycycle of bandwidth modulation pulse according to the P of calculating, and then controls the real-time of resistance-type hot plate
Power.
When the temperature value of user's setting is by microprocessor after being converted into Power Theory value, Power Theory value is higher than resistance
The rated power of formula hot plate, auxiliary power switch conduction is triggered after judging by the comparator of microprocessor, and then control relay
Relay conducting in device unit, auxiliary resistance formula hot plate are started working, meanwhile, microprocessor control resistance-type hot plate starts work
Make, wherein, the power of auxiliary resistance formula hot plate is Power Theory value and the difference of rated power.
Technical scheme is described in detail above in association with accompanying drawing, it is contemplated that how to design one kind in correlation technique can
With the power conditioning circuitry of real-time regulation resistance formula hot plate to realize the skill of the effect of the heating power real-time, tunable of cooking apparatus
Art problem, the present invention proposes a kind of power conditioning circuitry of resistance-type hot plate and a kind of cooking apparatus, by being sequentially connected electricity
Source module, resistance-type hot plate module, power driver module, sampling module and microprocessor, realize microprocessor according to sampling
The effect of the output signal control power driver module of module, so realize to the Real-time Feedback of the power of resistance-type hot plate and
Regulation in real time.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. power conditioning circuitry of resistance-type hot plate, it is characterised in that including：Power module；Resistance-type hot plate module, including auxiliary resistance formula hot plate and at least one resistance-type hot plate, the resistance-type hot plate module It is connected to the power module；Power driver module, is connected to the resistance-type hot plate module, and the power driver module is used to control the resistance-type Whether hot plate module is heated；Sampling module, is connected to the power module, and the sampling module is used to carry out the power supply signal of the power module Sampling；Microprocessor, is connected to the power driver module and the sampling module, and the microprocessor is believed according to the power supply The working condition of number control power driver module to adjust the power of the resistance-type hot plate and the auxiliary resistance in real time The bearing power of formula hot plate；The microprocessor also includes：Temperature control module, including temperature setting unit and temperature sensing unit, wherein, the temperature setting unit is used to preset work Temperature value, the temperature sensing unit are used for the actual temperature value for sensing at least one resistance-type hot plate；Power conversion module, is connected to the temperature control module, and the power conversion module is used for according to the default operating temperature The difference of value and the actual temperature value determines the reference power of resistance-type hot plate module；Power computation module, the sampling module is connected to, for being calculated as the power supply signal of sampling to compensate power.
- 2. the power conditioning circuitry of resistance-type hot plate according to claim 1, it is characterised in that the auxiliary resistance formula heat Disk includes：Aid in resistive heater；Heating power drive module is aided in, is connected between the auxiliary resistive heater and the microprocessor, the auxiliary Heating power drive module determines whether to drive the auxiliary resistive heater to heat according to the output signal of the microprocessor.
- 3. the power conditioning circuitry of resistance-type hot plate according to claim 2, it is characterised in that auxiliary heating power driving Module includes：Auxiliary power switchs, and is connected to the microprocessor；Relay unit, including at least one relay, at least one relay be connected to auxiliary power switch and Between the auxiliary resistive heater.
- 4. the power conditioning circuitry of resistance-type hot plate according to claim 1, it is characterised in that the sampling module bag Include：Divider resistance unit, including the first resistor and second resistance being connected in series, the divider resistance unit are connected to described Between power module and ground wire, the output end of the common port of the first resistor and the second resistance as the power supply signal It is connected to the microprocessor.
- 5. the power conditioning circuitry of resistance-type hot plate according to claim 1, it is characterised in that the microprocessor bag Include：Modulation module, the input of the modulation module are connected to the power conversion module and the power computation module with true The dutycycle for bandwidth pulses processed of setting the tone, the output end of the modulation module are connected to the power driver module with by the tune Bandwidth pulses processed control the power of the power driver module.
- 6. the power conditioning circuitry of resistance-type hot plate according to claim 4, it is characterised in that the power driver module Including：Power switch unit, including at least one transistor switch, any one crystal at least one transistor switch Pipe switch is connected between a resistance-type hot plate and ground wire, and the base stage of any one transistor switch is connected to described Output end of microprocessor.
- 7. the power conditioning circuitry of resistance-type hot plate according to claim 1, it is characterised in that the power module bag Include：Input protection circuit, including the zero line and live wire of power frequency supply are connected to, it is connected between the zero line and the live wire Piezo-resistance.
- 8. the power conditioning circuitry of resistance-type hot plate according to claim 7, it is characterised in thatProtection electric capacity is connected between the zero line and the live wire.
- 9. the power conditioning circuitry of resistance-type hot plate according to claim 8, it is characterised in that the power module also wraps Include：Current rectifying and wave filtering circuit, it is connected between the input protection circuit and the resistance-type hot plate module, for inputting institute State resistance-type hot plate module and carry out rectifying and wave-filtering processing.
- A kind of 10. cooking apparatus, it is characterised in that including：Resistance-type hot plate as claimed in any one of claims 1-9 wherein Power conditioning circuitry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510117905.1A CN106033228B (en) | 2015-03-17 | 2015-03-17 | The power conditioning circuitry and cooking apparatus of resistance-type hot plate |
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| CN201510117905.1A CN106033228B (en) | 2015-03-17 | 2015-03-17 | The power conditioning circuitry and cooking apparatus of resistance-type hot plate |
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| CN106033228B true CN106033228B (en) | 2017-12-22 |
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| 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 |
| CN109561518B (en) * | 2017-09-25 | 2023-02-24 | 佛山市顺德区美的电热电器制造有限公司 | Heating control device and cooking utensil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2718318B1 (en) * | 1994-03-31 | 1996-11-29 | Moulinex Sa | Automatic power control and monitoring device for an induction heater and method of implementing this device. |
| US5565123A (en) * | 1994-09-30 | 1996-10-15 | Robertshaw Controls Company | Electronic control circuit for a cooking unit employing pulse width modulation to control a radiant heating element |
| US6093914A (en) * | 1999-06-10 | 2000-07-25 | Diekmann; Mark J. | Electric cooking appliance |
| KR20040096230A (en) * | 2003-05-07 | 2004-11-16 | 삼성전자주식회사 | Composition Cooking Apparatus And Control Method Thereof |
| EP2327939A4 (en) * | 2008-09-09 | 2014-11-19 | Kevin Lin | Heating control device and method thereof |
| CN102436283A (en) * | 2011-09-20 | 2012-05-02 | 美的集团有限公司 | Heating power control circuit and control method |
| CN203645850U (en) * | 2013-12-03 | 2014-06-11 | 郑州航空工业管理学院 | Control device for high-power induction cooker |
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