CN106033228A - Power conditioning circuit of resistance-type hot plate, and cooking utensil - Google Patents
Power conditioning circuit of resistance-type hot plate, and cooking utensil Download PDFInfo
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- CN106033228A CN106033228A CN201510117905.1A CN201510117905A CN106033228A CN 106033228 A CN106033228 A CN 106033228A CN 201510117905 A CN201510117905 A CN 201510117905A CN 106033228 A CN106033228 A CN 106033228A
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Abstract
The invention provides a power conditioning circuit of a resistance-type hot plate, and a cooking utensil. The power conditioning circuit of a resistance-type hot plate comprises a power module, a resistance-type hot plate module, a power driving module, a sampling module, and a microprocessor. The resistance-type hot plate module comprises at least a resistance-type hot plate and an auxiliary resistance-type hot plate. The resistance-type hot plate module is connected with the power module. The power driving module is connected with the resistance-type hot plate module. The power driving module is used to control whether the resistance-type hot plate module heats. The sampling module is connected with the power module. The sampling module is used to sample power supply signals of the power module. The microprocessor is connected with the power driving module and the sampling module. The microprocessor controls operating states of the power driving module according to the power supply signals, so as to adjust power of the resistance-type hot plate module and load power of the auxiliary resistance-type hot plate in real time. The technical scheme realizes effect that the microprocessor controls the power driving module according to the output signal of the sampling module, and power range of the resistance-type hot plate module is increased.
Description
Technical field
The present invention relates to cooking apparatus technical field, in particular to the merit of a kind of resistance-type hot plate
Rate regulation circuit and a kind of cooking apparatus.
Background technology
In the related, the cooking apparatus of resistance-type hot plate it is provided with in the course of the work, it is common that
By the working time of Control resistance-type hot plate, and then determine the mean power of resistance-type hot plate
, but above-mentioned control mode and circuit structure have the disadvantage in that
(1) time by Control resistance-type hot plate, owing to relay is Mechanical course, institute
With its switching process relative delay, it is impossible to realize the accurate control to resistance-type hot plate；
(2) some relay is when using drive circuit to be controlled, and can only drive electricity by regulation
The turn off process of the turn-off time regulating relay on road, and then determine the average merit of resistance-type hot plate
Rate.
Therefore, a kind of power conditioning circuitry of resistance-type hot plate that can regulate in real time how is designed to realize
The effect of the heating power real-time, tunable of cooking apparatus becomes technical problem urgently to be resolved hurrily.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art or correlation technique.
To this end, it is an object of the present invention to propose the power adjustments electricity of a kind of resistance-type hot plate
Road.
Further object is that and propose a kind of cooking apparatus.
For achieving the above object, embodiment according to the first aspect of the invention, it is proposed that a kind of resistance
The power conditioning circuitry of formula hot plate, including: power module；Resistance-type hot plate module, including at least one
Individual resistance-type hot plate and auxiliary resistance formula hot plate, described resistance-type hot plate module is connected to described power supply mould
Block；Power driver module, is connected to described resistance-type hot plate module, and described power driver module is used for
Control whether described resistance-type hot plate module heats；Sampling module, is connected to described power supply mould
Block, described sampling module is for sampling to the power supply signal of described power module；Microprocessor,
Being connected to described power driver module and described sampling module, described microprocessor supplies telecommunications according to described
Number control the duty of described power driver module to regulate in real time the merit of described resistance-type hot plate module
Rate and the bearing power of described auxiliary resistance formula hot plate.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being sequentially connected with electricity
Source module, resistance-type hot plate module, power driver module, sampling module and microprocessor, it is achieved that
Microprocessor controls the effect of power driver module according to the output signal of sampling module, and then achieves
To the Real-time Feedback of power of resistance-type hot plate and regulation in real time, it addition, by resistance-type hot plate mould
Block arranges resistance-type hot plate and auxiliary resistance formula hot plate increases the power model of resistance-type hot plate module
Enclose.
Specifically, when the power supply signal of power module loads on resistance-type hot plate module, power drive mould
During block cut-off state, resistance-type hot plate is not operated, when microprocessor output high level pulse,
During power driver module conducting state, resistance-type hot plate is started working, and the power of resistance-type hot plate depends on
Power supply signal, therefore, by power supply signal is fed back to microprocessor, can be true according to power supply signal
The power of last time heating process is as reference power calmly, and further according to reference power and setting
Mode of operation determine the power of current heating process, i.e. achieve the Real-time Feedback to power and in real time
Regulation.
It is worth it is emphasized that microprocessor is provided with comparator, the triggering signal control of comparator
The duty of auxiliary resistance formula hot plate processed, specifically, the performance number set user is higher than resistance-type
During the rated power of hot plate, comparator sends triggering signal, controls auxiliary resistance formula hot plate and resistance-type heat
Dish is operated simultaneously, when the performance number that user sets is less than the rated power of resistance-type hot plate, only
Controlling resistance-type hot plate to be operated, therefore, the operating power range of resistance-type hot plate module is by auxiliary
Help resistance-type hot plate to increase, more can 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 side
Method, it is also possible to there is techniques below feature:
According to one embodiment of present invention, described auxiliary resistance formula hot plate includes: auxiliary adds thermal resistance
Silk；Auxiliary heating power drives module, is connected to described auxiliary resistive heater and described microprocessor
Between, described auxiliary heating power drives module to determine whether according to the output signal of described microprocessor
Described auxiliary resistive heater is driven to heat.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, adds by arranging auxiliary
Thermal power drives module, it is achieved that the real-time control to the power of auxiliary resistance formula hot plate.
Wherein, being provided with comparator in microprocessor, the triggering signal of comparator controls auxiliary and adds thermoelectricity
The duty of resistance silk, specifically, the performance number in user's setting is higher than the specified merit of resistance-type hot plate
During rate, comparator sends triggering signal, controls auxiliary resistive heater and resistance-type hot plate carries out work simultaneously
Make, when the performance number that user sets is less than the rated power of resistance-type hot plate, only control resistance-type heat
Dish is operated, and therefore, the operating power range of resistance-type hot plate module is by auxiliary resistive heater
Increase, more can meet the demand for heat of user.
According to one embodiment of present invention, auxiliary heating power drives module to include: auxiliary power is opened
Close, be connected to described microprocessor；Relay unit, including at least one relay, described at least
One relay is connected between described auxiliary power switch and described auxiliary resistive heater.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by arranging auxiliary merit
Rate switch and relay unit, it is ensured that auxiliary heating power drives the accurate control of module, specifically
Ground, by auxiliary power switch and the two-stage series connection on-off control of relay unit, it is to avoid signal wave
The situation of the false triggering that the noise pulses such as dynamic and ripple current cause.
According to one embodiment of present invention, described sampling module includes: divider resistance unit, including
The first resistance being connected in series and the second resistance, described divider resistance unit is connected to described power module
And between described ground wire, the common port of described first resistance and described second resistance as described for telecommunications
Number outfan be connected to described microprocessor.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by sampling module
In divider resistance unit is set, when being voltage for power supply signal, at the dividing potential drop by two resistance
Reason, obtains the voltage sampling signal being applicable to microprocessor, and then determines the ginseng of heating process next time
Examine power, it is achieved that the accurate regulation to resistance-type hot plate.
Wherein, it is in circuit reliability and considers, divider resistance can increase electrochemical capacitor and bypass
Electric capacity is to avoid the impact on sampled signal of the ripple current isopulse noise.
According to one embodiment of present invention, described microprocessor also includes: temperature control module, including temperature
Degree setup unit and temperature sensing unit, wherein, described temperature setting unit is used for presetting operating temperature
Value, described temperature sensing unit is for sensing the actual temperature value of at least one resistance-type hot plate described；
Power conversion module, is connected to described temperature control module, and described power conversion module is for according to described pre-
If the difference of operating temperature value and described actual temperature value determines the reference power of resistance-type hot plate module；
Power computation module, is connected to described sampling module, for the power supply signal of sampling is calculated as compensation
Power.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by microprocessor
In temperature control module, power conversion module and power computation module are set, it is achieved that to resistance-type hot plate
The accurate regulation of power.
Specifically, user can set intended temperature value by temperature setting unit and (i.e. preset work
Temperature value), temperature sensing unit senses the actual temperature value of resistance-type hot plate in real time, thereby determines that pre-
If operating temperature value and the difference of actual temperature value, and record what temperature value difference the most in the same time generated
Sequence, determines the weighted value of each temperature value in temperature gap sequence based on experience value, and then generates
The weight of temperature gap sequence adds and is worth, and power and weight according to a front heating process add and are worth really
Theorem opinion performance number, then determines compensation power according to power supply signal, finally according to theoretical power (horse-power) value and
Supplemental capacity determines the final output of resistance-type hot plate.
It is worthy of note, microprocessor, after obtaining final output according to said method, needs
It is converted into the dutycycle of bandwidth modulation pulse, and then determines that resistance-type hot plate is at certain power supply signal
Time power.
According to one embodiment of present invention, described microprocessor includes: modulation module, described modulation
The input of module is connected to described power conversion module and described power computation module to determine modulation band
The dutycycle of broad pulse, the outfan of described modulation module is connected to described power driver module to pass through
The power of power driver module described in described modulation bandwidth Pulse Width Control.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by described micro-place
Reason device arranges modulation module, it is achieved that the accurate regulation to power driver module, wherein, power drives
Dynamic model block rapidly switch off and conducting determines and resistance-type can add hot plate and quickly switch control
System.
According to one embodiment of present invention, described power driver module also includes: power switch list
Unit, including at least one transistor switch, any one crystal at least one transistor switch described
Pipe switch is connected between a described resistance-type hot plate and ground wire, any one transistor switch described
Base stage is connected to the outfan of described microprocessor.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by power drive
Module arranges transistor switch, and be connected to the outfan of microprocessor and resistance-type hot plate it
Between, the conducting state switched by the output signal control transistor of microprocessor, and then control resistance
The power of formula hot plate, thus the fluctuation avoiding signal causes maloperation, so ensure that circuit can
By property.
According to one embodiment of present invention, described power module includes: input protection circuit, including
Being connected to zero line and the live wire of power frequency supply, connecting between described zero line and described live wire has pressure-sensitive electricity
Resistance.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, protects by arranging input
Protection circuit and varistor is set in input protection circuit, it is achieved that to the pressure limiting of power frequency supply and
/ or current limliting process, and then ensure that the reliability of circuit.
According to one embodiment of present invention, protected electricity is connected between described zero line and described live wire
Hold.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by zero line and fire
Protection electric capacity is set between line, power frequency supply is served the effect of exchange isolation, ensures further
The reliability of circuit.
According to one embodiment of present invention, described power module also includes: current rectifying and wave filtering circuit, even
Be connected between described input protection circuit and described resistance-type hot plate module, be rectification filtering module for
Rectifying and wave-filtering process is carried out to inputting described resistance-type hot plate module.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by power module
In current rectifying and wave filtering circuit is set, obtain Unidirectional direct-current load easily, and then carry for resistance-type hot plate
Supply stable power supply signal.
Embodiment according to the second aspect of the invention, it is proposed that a kind of cooking apparatus, including: as above
State the power conditioning circuitry of resistance-type hot plate described in any one technical scheme.
The additional aspect of the present invention and advantage will part be given in the following description, and part will be from following
Description in become obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Embodiment is retouched by the above-mentioned and/or additional aspect of the present invention and advantage from combining accompanying drawings below
Will be apparent from easy to understand in stating, wherein:
Fig. 1 shows the structure of the power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention
Schematic diagram.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Fig. 1 shows the structure of the power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention
Schematic diagram.
As it is shown in figure 1, the power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, bag
Include: power module 1；Resistance-type hot plate module 2, including at least one resistance-type hot plate 21 and auxiliary
Resistance-type hot plate 22, described resistance-type hot plate module is connected to described power module 1；Power drive mould
Block 3, is connected to described resistance-type hot plate module 2, and described power driver module 3 is used for controlling described
Whether resistance-type hot plate module 2 heats；Sampling module 4, is connected to described power module 1,
Described sampling module 4 is for sampling to the power supply signal of described power module 1；Microprocessor
5, it is connected to described power driver module 3 and described sampling module 4, described microprocessor 5 basis
Described power supply signal controls the duty of described power driver module 3 to regulate described resistance-type in real time
The power of hot plate 21 and the bearing power of described auxiliary resistance formula hot plate 21.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by being sequentially connected with electricity
Source module 1, resistance-type hot plate module 2, power driver module 3, sampling module 4 and microprocessor
5, it is achieved that microprocessor 5 controls to drive the effect of mould 3 pieces according to the output signal of sampling module 4
Really, and then achieve the Real-time Feedback of power to resistance-type hot plate 21 and regulation in real time, it addition,
Increase by arranging resistance-type hot plate 21 and auxiliary resistance formula hot plate 22 in resistance-type hot plate module 2
The power bracket of resistance-type hot plate module 2.
Specifically, when the power supply signal of power module 1 loads on resistance-type hot plate module 21, power
When driving module 3 cut-off state, resistance-type hot plate 21 is not operated, when microprocessor 5 exports
During high level pulse, during power driver module 3 conducting state, resistance-type hot plate 21 is started working, electricity
The power of resistive hot plate 21 depends on power supply signal, therefore, by power supply signal feeds back to micro-place
Reason device 5, can according to power supply signal determine the power of last heating process as reference power, and
And determine the power of current heating process further according to the mode of operation of reference power and setting, the most in fact
The Real-time Feedback to power and regulation are in real time showed.
It is worth it is emphasized that microprocessor 5 is provided with comparator, the triggering signal of comparator
Controlling the duty of auxiliary resistance formula hot plate 22, specifically, the performance number set user is higher than
During the rated power of resistance-type hot plate 21, comparator sends triggering signal, controls auxiliary resistance formula hot plate
22 and resistance-type hot plate 21 be operated simultaneously, the performance number set user is less than resistance-type hot plate
21 rated power time, only control resistance-type hot plate 21 be operated, therefore, resistance-type hot plate mould
The operating power range of block 2 is increased by auxiliary resistance formula hot plate 22, more can meet adding of user
Heat demand.
Whether the coil panel of detection cooking apparatus according to the abovementioned embodiments of the present invention assembles correct side
Method, it is also possible to there is techniques below feature:
According to one embodiment of present invention, described auxiliary resistance formula hot plate 22 includes: auxiliary heating
Resistance wire；Auxiliary heating power drives module, is connected to described auxiliary resistive heater and described micro-place
Between reason device 5, described auxiliary heating power drives module according to the output signal of described microprocessor 5
Determine whether to drive described auxiliary resistive heater to heat.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, adds by arranging auxiliary
Thermal power drives module, it is achieved that the real-time control to the power of auxiliary resistance formula hot plate.
Wherein, being provided with comparator in microprocessor 5, the triggering signal of comparator controls auxiliary heating
The duty of resistance wire, specifically, the performance number set user is higher than the specified of resistance-type hot plate
During power, comparator sends triggering signal, the while of controlling auxiliary resistive heater and resistance-type hot plate 21
It is operated, when the performance number that user sets is less than the rated power of resistance-type hot plate, only controls electricity
Resistive hot plate 21 is operated, and therefore, the operating power range of resistance-type hot plate module 2 is by auxiliary
Help resistive heater to increase, more can meet the demand for heat of user.
According to one embodiment of present invention, auxiliary heating power drives module to include: auxiliary power is opened
Close 24, be connected to described microprocessor 5；Relay unit, including at least one relay 23,
At least one relay 23 described is connected to described auxiliary power switch 24 and described auxiliary adds thermal resistance
Between Si.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by arranging auxiliary merit
Rate switch 24 and relay unit, it is ensured that auxiliary heating power drives the accurate control of module, tool
Body ground, by auxiliary power switch 24 and the two-stage series connection on-off control of relay unit, it is to avoid
The situation of the false triggering that the noise pulse such as signal fluctuation and ripple current causes.
It addition, the power conditioning circuitry of resistance-type hot plate according to the above embodiment of the present invention, it is also possible to
There is following additional technical characteristic:
According to one embodiment of present invention, described sampling module 4 includes: divider resistance unit, bag
Including the first resistance 41 and the second resistance 42 being connected in series, described divider resistance unit is connected to described
Between power module 1 and described ground wire, described first resistance 41 and described second resistance 42 public
The outfan as described power supply signal is held to be connected to described microprocessor 5.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by sampling module
Divider resistance unit is set in 4, when being voltage for power supply signal, at the dividing potential drop by two resistance
Reason, obtains and is applicable to the voltage sampling signal of microprocessor 5, and then determines heating process next time
Reference power, it is achieved that the accurate regulation to resistance-type hot plate.
Wherein, it is in circuit reliability and considers, divider resistance can increase electrochemical capacitor 43 He
Shunt capacitance 44 is to avoid the impact on sampled signal of the ripple current isopulse noise.
According to one embodiment of present invention, described microprocessor 5 also includes: temperature control module (Fig. 1
Not shown in), including temperature setting unit and temperature sensing unit, wherein, described temperature sets single
Unit is used for presetting operating temperature value, and described temperature sensing unit is used for sensing at least one resistance-type described
The actual temperature value of hot plate；Power conversion module, is connected to described temperature control module, and described power is changed
Module is for determining resistance-type heat according to the difference of described default operating temperature value and described actual temperature value
The reference power of disk module 2；Power computation module, is connected to described sampling module 4, for adopting
The power supply signal of sample is calculated as compensating power.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by microprocessor
In temperature control module, power conversion module and power computation module are set, it is achieved that to resistance-type hot plate
The accurate regulation of power.
Specifically, user can set intended temperature value by temperature setting unit and (i.e. preset work
Temperature value), temperature sensing unit senses the actual temperature value of resistance-type hot plate in real time, thereby determines that pre-
If operating temperature value and the difference of actual temperature value, and record what temperature value difference the most in the same time generated
Sequence, determines the weighted value of each temperature value in temperature gap sequence based on experience value, and then generates
The weight of temperature gap sequence adds and is worth, and power and weight according to a front heating process add and are worth really
Theorem opinion performance number, then determines compensation power according to power supply signal, finally according to theoretical power (horse-power) value and
Supplemental capacity determines the final output of resistance-type hot plate.
It is worthy of note, microprocessor 5, after obtaining final output according to said method, needs
The dutycycle of bandwidth modulation pulse to be converted into, and then determine that resistance-type hot plate supplies telecommunications at certain
Number time power.
According to one embodiment of present invention, described microprocessor 5 includes: modulation module, described tune
The input of molding block is connected to described power conversion module and described power computation module to determine modulation
The dutycycle of bandwidth pulses, the outfan of described modulation module be connected to described power driver module 3 with
Power by power driver module 3 described in described modulation bandwidth Pulse Width Control.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by described micro-place
Reason device 5 arranges modulation module, it is achieved that the accurate regulation to power driver module 3, wherein, merit
Rate drive module 3 rapidly switch off and conducting determines and resistance-type can be added hot plate and quickly open
Close and control.
According to one embodiment of present invention, described power driver module 3 includes: power switch list
Unit, including at least one transistor switch 31, arbitrary at least one transistor switch 31 described
Individual transistor switch 31 is connected between a described resistance-type hot plate and ground wire, any one crystalline substance described
The base stage of body pipe switch 31 is connected to the outfan of described microprocessor 5.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by power drive
Module 3 arranges transistor switch 31, and is connected to outfan and the resistance-type of microprocessor 5
Between hot plate, switched the conducting state of 31 by the output signal control transistor of microprocessor 5,
And then control the power of resistance-type hot plate thus avoid the fluctuation of signal and cause maloperation, and then ensure
The reliability of circuit.
According to one embodiment of present invention, described power module 1 includes: input protection circuit, bag
Including zero line and the live wire being connected to power frequency supply, connecting between described zero line and described live wire has pressure-sensitive electricity
Resistance 11.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, protects by arranging input
Protection circuit and varistor 11 is set in input protection circuit, it is achieved that the limit to power frequency supply
Pressure and/or current limliting process, and then ensure that the reliability of circuit.
According to one embodiment of present invention, protected electric capacity is connected between described zero line and described live wire
12。
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by zero line and fire
Protection electric capacity 12 is set between line, power frequency supply is served the effect of exchange isolation, further
Ensure that the reliability of circuit.
According to one embodiment of present invention, described power module 1 also includes: current rectifying and wave filtering circuit,
It is connected between described input protection circuit and described resistance-type hot plate module, is rectification filtering module
13 for carrying out rectifying and wave-filtering process to the described resistance-type hot plate module of input.
The power conditioning circuitry of resistance-type hot plate according to an embodiment of the invention, by power module
In current rectifying and wave filtering circuit 13 is set, obtain Unidirectional direct-current load easily, and then be resistance-type heat
Dish provides stable power supply signal.
In conjunction with Fig. 1, the calculating process of the power of the cooking apparatus according to the present invention is specifically described.
The computing 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 that the power calculated, U (K-1) refer to that last output .E (k) refers to
When the difference of pre-test temperature value Yu set temperature value, E (k-1), E (K-2) refer to last time and upper
The measurement temperature once calculated and the difference of design temperature, Kp, Ki, Kd are ratio, differential, integration
Coefficient, rule of thumb scope Kp:1.6-5, Ki:3-10, Kd:0.5-3, need according to varying environment and structure
Adjust.Calculate corresponding power Pc, because line voltage value can be varied from different regions, this meeting
Hot plate power is had certain impact, for more precise control of temperature, further according to current line voltage V pair
Answer power compensating value Pv, Pv=(V-220) * 8. draws final output P=Pc-Pv。
It addition, after sampling module 4 carries out voltage division processing to line voltage, at the first resistance 41 and
Between two resistance 42, leading-out terminal is connected to microprocessor 5, the power supply that now microprocessor 5 obtains
Signal is converted into reference power Pc, it addition, obtain user to set temperature T to be heated1, and temperature
It is T that sensing module records the temperature of resistance-type stone or metal plate for standing a stove on as a precaution against fire2, obtaining temperature gap is Δ T, untreated 5
Power Theory value P is calculated 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 calculated, and then controls resistance
The realtime power of formula hot plate.
When user set temperature value by microprocessor be converted into Power Theory value after, Power Theory
Value, higher than the rated power of resistance-type hot plate, triggers auxiliary merit by the comparator of microprocessor after being judged
Rate switch conduction, and then control the relay conducting in relay unit, auxiliary resistance formula hot plate starts
Work, meanwhile, microprocessor controls resistance-type hot plate and starts working, wherein, auxiliary resistance formula hot plate
The difference that power is Power Theory value and rated power.
Technical scheme is described in detail, it is contemplated that in correlation technique how above in association with accompanying drawing
Design a kind of power conditioning circuitry of resistance-type hot plate that can regulate in real time to realize the heating of cooking apparatus
The technical problem of the effect of power real-time, tunable, the present invention proposes the power of a kind of resistance-type hot plate and adjusts
Economize on electricity road and a kind of cooking apparatus, by being sequentially connected with power module, resistance-type hot plate module, power
Drive module, sampling module and microprocessor, it is achieved that microprocessor is believed according to the output of sampling module
Number control the effect of power driver module, and then achieve the Real-time Feedback of power to resistance-type hot plate
With regulation in real time.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from other modes described here, therefore, and the present invention
Protection domain do not limited by following public specific embodiment.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (11)
1. the power conditioning circuitry of a resistance-type hot plate, it is characterised in that including:
Power module；
Resistance-type hot plate module, including at least one resistance-type hot plate and auxiliary resistance formula hot plate, described
Resistance-type hot plate module is connected to described power module；
Power driver module, is connected to described resistance-type hot plate module, and described power driver module is used for
Control whether described resistance-type hot plate module heats；
Sampling module, is connected to described power module, and described sampling module is for described power module
Power supply signal sample；
Microprocessor, is connected to described power driver module and described sampling module, described microprocessor
The duty of described power driver module is controlled to regulate described resistance in real time according to described power supply signal
The power of formula hot plate and the bearing power of described auxiliary resistance formula hot plate.
The power conditioning circuitry of resistance-type hot plate the most according to claim 1, its feature exists
In, described auxiliary resistance formula hot plate includes:
Auxiliary resistive heater；
Auxiliary heating power drives module, is connected to described auxiliary resistive heater and described microprocessor
Between, described auxiliary heating power drives module to determine whether according to the output signal of described microprocessor
Described auxiliary resistive heater is driven to heat.
The power conditioning circuitry of resistance-type hot plate the most according to claim 2, its feature exists
In, auxiliary heating power drives module to include:
Auxiliary power switchs, and is connected to described microprocessor；
Relay unit, including at least one relay, at least one relay described is connected to described
Between auxiliary power switch and described auxiliary resistive heater.
The power conditioning circuitry of resistance-type hot plate the most according to claim 1, its feature exists
In, described sampling module includes:
Divider resistance unit, including the first resistance being connected in series and the second resistance, described divider resistance
Unit is connected between described power module and described ground wire, described first resistance and described second resistance
Common port be connected to described microprocessor as the outfan of described power supply signal.
The power conditioning circuitry of resistance-type hot plate the most according to claim 4, its feature exists
In, described microprocessor also includes:
Temperature control module, including temperature setting unit and temperature sensing unit, wherein, described temperature sets
Unit is used for presetting operating temperature value, and described temperature sensing unit is used for sensing at least one resistance described
The actual temperature value of formula hot plate；
Power conversion module, is connected to described temperature control module, and described power conversion module is for according to institute
The difference stating default operating temperature value and described actual temperature value determines the reference merit of resistance-type hot plate module
Rate；
Power computation module, is connected to described sampling module, based on by the described power supply signal of sampling
Calculate as compensating power.
The power conditioning circuitry of resistance-type hot plate the most according to claim 5, its feature exists
In, described microprocessor includes:
Modulation module, the input of described modulation module is connected to described power conversion module and described merit
Rate computing module is to determine the dutycycle of modulation bandwidth pulse, and the outfan of described modulation module is connected to
Described power driver module is with the merit by power driver module described in described modulation bandwidth Pulse Width Control
Rate.
The power conditioning circuitry of resistance-type hot plate the most according to claim 4, its feature exists
In, described power driver module includes:
Power switch unit, including at least one transistor switch, at least one transistor switch described
In any one transistor switch be connected between a described resistance-type hot plate and ground wire, described arbitrary
The base stage of individual transistor switch is connected to described output end of microprocessor.
The power conditioning circuitry of resistance-type hot plate the most according to claim 1, its feature exists
In, described power module includes:
Input protection circuit, including being connected to zero line and the live wire of power frequency supply, described zero line and described
Connect between live wire and have varistor.
The power conditioning circuitry of resistance-type hot plate the most according to claim 8, its feature exists
In, connect protected electric capacity between described zero line and described live wire.
The power conditioning circuitry of resistance-type hot plate the most according to claim 9, its feature exists
In, described power module also includes:
Current rectifying and wave filtering circuit, be connected to described input protection circuit and described resistance-type hot plate module it
Between, it is that rectification filtering module is for carrying out rectifying and wave-filtering process to the described resistance-type hot plate module of input.
11. 1 kinds of cooking apparatus, it is characterised in that including: as arbitrary in claim 1 to 10
The power conditioning circuitry of the resistance-type hot plate described in Xiang.
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| CN106033228B (en) | 2017-12-22 |
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