CN209269378U - Heating control apparatus and heating vessel for heating vessel - Google Patents
Heating control apparatus and heating vessel for heating vessel Download PDFInfo
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- CN209269378U CN209269378U CN201821824092.5U CN201821824092U CN209269378U CN 209269378 U CN209269378 U CN 209269378U CN 201821824092 U CN201821824092 U CN 201821824092U CN 209269378 U CN209269378 U CN 209269378U
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Abstract
The utility model relates to home wiring control fields, disclose a kind of heating control apparatus and heating vessel for heating vessel, the device includes heat-generating disc, controller and the lateral wall installation capacitive sensing piece for being mounted on heating vessel, the controller is separately connected with capacitive sensing piece and heat-generating disc, heat-generating disc work is controlled for obtaining the capacitance of capacitive sensing piece induction, and according to capacitance to heat to heating vessel.With accurately detecting and controlling for this spilling for realizing heating vessel, effectively prevents heating vessel and lead to the problem of failure accident caused by foam overflow when heated, also the user experience is improved.
Description
Technical field
The utility model relates to home wiring control technical fields, and in particular to a kind of computer heating control for heating vessel
Device and heating vessel.
Background technique
As heating vessel is using more and more extensive, other than heating up water, the liquid of other function is also created
Heat health-promotion kettle of the container as cooked health food materials.
Aforesaid liquid heats container and is especially for health-promotion kettle in use, is easy to produce foam, to be easy
It causes to overflow, causes to make table top dirty, or even make liquid penetrate into circuit board to lead to short circuit, generate fire and contact accident,
Poor user experience.Thus no-spill control is particularly important.Current product generally use intermittent-heating control to realize, when
Heating of having a rest causes power big, causes heating time too long with this, and heating power it is small also cause cook effect it is poor.
Utility model content
The purpose of the utility model is to provide a kind of heating control apparatus for heating vessel and liquid heating to hold
Device, it is therefore intended that solve the anti-overflow control of existing heating vessel and bring heating power is low to cause heating time long and culinary art effect
The problem of difference.
To achieve the goals above, the present invention also provides a kind of heating control apparatus for heating vessel, should add
Heat control device includes:
Capacitive sensing piece, capacitive sensing piece are mounted on the lateral wall of heating vessel；
Heat-generating disc, for being heated to heating vessel；
Controller is separately connected with capacitive sensing piece and heat-generating disc, for obtaining the capacitance of capacitive sensing piece induction, and
Heat-generating disc work is controlled according to capacitance to heat to heating vessel.
Optionally, heating control apparatus further includes anti-overflow module,
The test side of anti-overflow module connects capacitive sensing piece, and the output end of anti-overflow module connects controller, and anti-overflow module is used
In the capacitance for obtaining the induction of capacitive sensing piece, concurrent power transmission capacity to controller.
Optionally, controller is further configured to:
It stops working in control heat-generating disc, after stopping heating heating vessel, also judges in preset time
Whether the variable quantity of capacitance is less than the second preset threshold in being spaced；
In the case where judging the variable quantity of capacitance less than the second preset threshold, control heat-generating disc work, to liquid
Body heating container is heated, wherein the second preset threshold is less than or equal to the first preset threshold.
Optionally, judging whether the variable quantity of capacitance is greater than the first preset threshold within a preset time interval includes:
The temperature detected is received from temperature sensor；
Judge whether temperature is greater than preset temperature；
In the case where judging that temperature is greater than preset temperature, judge that the variable quantity of capacitance within a preset time interval is
It is no to be greater than the first preset threshold.
Optionally, controller is further configured to:
Before judging whether the variable quantity of capacitance within a preset time interval is greater than the first preset threshold, according to liquid
The heating mode for heating the setting of container determines corresponding first preset threshold.
Optionally, further includes:
Zero crossing detection module, the input terminal of zero crossing detection module connect AC power source, and the output end of zero crossing detection module connects
It is connected to controller, zero crossing detection module is used to detect the zero cross signal for the AC power source for being input to heating control apparatus；
First switch module, the both ends of the switch of first switch module are connected on AC power source to the current supply circuit of heat-generating disc
In, the control terminal of first switch module connects controller；
Controller controls the switch state of first switch module according to zero cross signal, to control heat-generating disc work.
Optionally, temperature sensor connects anti-overflow module, and anti-overflow module detects heating vessel by temperature sensor
Internal fluid temperature, concurrent liquor charging temperature to controller.
Optionally, further include second switch module:
The both ends of the switch of second switch module are in parallel with the both ends of the switch of first switch module, second switch module
Control terminal connects controller.
Controller obtains the heating power of current liquid heating container, is greater than predetermined power threshold value in the heating power
In the case of, control second switch module is open-minded, and controls the closing of first switch module, to control heat-generating disc work.
Optionally, first switch module includes the first bidirectional triode thyristor, second resistance, the 4th resistance and the first optocoupler；
The first anode and second plate of first bidirectional triode thyristor are respectively the both ends of the switch of first switch mould, and first pair
One end of the bilateral diode of the first optocoupler is connected to silicon-controlled controlled stage；
One end of the other end connection second resistance of the bilateral diode of first optocoupler, the other end connection the of second resistance
The second plate of one bidirectional triode thyristor, the cathode of the light emitting diode of the first optocoupler connect one end of the 4th resistance, the 4th resistance
Other end ground connection, the anode of the light emitting diode of the first optocoupler is the control terminal of first switch module.
Optionally, second switch module includes the first relay and the first NPN type triode；
The both ends of the switch of the coil of first relay are the both ends of the switch of second switch module, the line of the first relay
One end of circle connects DC power supply, and the other end of the coil of the first relay connects the collector of the first NPN type triode, the
The emitter of one NPN type triode is grounded, and the base stage of the first NPN type triode is the control terminal of second switch module.
Optionally, zero crossing detection module includes the 6th resistance, first diode, the second optocoupler and the 7th resistance；
One end of 6th resistance is an input terminal of zero crossing detection module, the other end of the 6th resistance and first diode
Cathode is connected to the anode of the light emitting diode of the second optocoupler altogether, the yin of the Light emitting diode of the anode of first diode and the second optocoupler
Extremely another input terminal of zero crossing detection module；
One end of the collector of the triode of second optocoupler and the 7th resistance is connected to the output end of zero crossing detection module altogether, the
The emitter of the triode of two optocouplers is grounded.
To achieve the goals above, the present invention also provides a kind of heating vessel, which includes above-mentioned
Heating control apparatus.
Through the above technical solutions, the heating control apparatus and liquid for heating vessel of the utility model heat
Container, the device include heat-generating disc, controller and the lateral wall installation capacitive sensing piece for being mounted on heating vessel, the control
Device is separately connected with capacitive sensing piece and heat-generating disc, for obtaining the capacitance of capacitive sensing piece induction, and according to capacitance control
Heat-generating disc work processed is to heat heating vessel.Accurately detecting and controlling for the spilling of heating vessel is realized, is had
Effect prevents heating vessel to lead to the problem of failure accident caused by foam overflow when heated, and also the user experience is improved.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the utility model for health-promotion kettle structural schematic diagram in the method for heating and controlling of heating vessel；
Fig. 2 is flow chart of the utility model for the method for heating and controlling first embodiment of heating vessel；
Fig. 3 is functional block diagram of the utility model for the heating control apparatus first embodiment of heating vessel；
Fig. 4 is based on the functional block diagram for increasing anti-overflow module in Fig. 3；
Fig. 5 is functional block diagram of the utility model for the heating control apparatus second embodiment of heating vessel；
Fig. 6 is the functional block diagram of another connection type of the temperature sensor based on Fig. 5；
Fig. 7 is the circuit control principle figure of the heating control apparatus in the utility model heating vessel；
Fig. 8 is the control signal waveforms of the heating control apparatus in the utility model heating vessel；
Fig. 9 is another control signal waveforms of the heating control apparatus in the utility model heating vessel；
Figure 10 is the topology view of the capacitive sensing piece in the utility model heating vessel；
Figure 11 is the trace arrangements schematic diagram of the coupler in the utility model heating vessel.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The first embodiment of the utility model proposes a kind of method for heating and controlling for heating vessel, the heating control
Method processed is heated up water for controlling heating vessel, which can be the various heating liquid such as insulating pot, health-promotion kettle
The household appliance of body, heating vessel can cook various food materials such as dark green tea, jujube, tremella, millet etc. at this time, with the liquid
Foam, especially heating vessel heating food are easy to produce when body heating container is heated up water or heating vessel heats food materials
When material, prevent the control of foam overflow particularly important at this time.The method for heating and controlling of the embodiment of the present invention is to add for liquid
The anti-overflow control of heat container.
As shown in Figure 1, the heating vessel of the present embodiment is health-promotion kettle, structure includes bottle body 1, pot lid 2, bottle body 1
Bottom is equipped with heat-generating disc 4, and for heating water or food materials, bottle body 1 is mounted on pedestal 6, and by the way that coupling is arranged on pedestal 6
Clutch 3 is connect with bottle body 1, to realize that pedestal 6 is that bottle body 1 provides the weak electric signal for heating affiliated power supply and transmitting for control.
The side of bottle body 1 is provided with handle 11, and anti-overflow module 9 is equipped with inside handle, is electrically connected with capacitive sensing with the anti-overflow module 9
Piece 10, the capacitive sensing piece 10 are arranged close on the lateral wall of bottle body 1 of handle 11, detect the capacitance of induction, anti-overflow mould
Block 9 is electrically connected the capacitive sensing piece 10, and the analog quantity of the capacitance for the induction is converted into can recognize after carrying out identifying processing
Digital quantity, for convenience of description, the capacitance of induction mentioned below is by the processed digital quantity of anti-overflow module 9.
The capacitive sensing piece 10 is arranged close to the opening of bottle body 1, usually heats up water or cooks by heating vessel
Prepare food food materials when, the position of water level or food materials under the installation site, only heating generate foam rise Shi Caihui reach
The installation site of this position namely capacitive sensing piece 10 is on the peak level graduation mark that bottle body 1 identifies, inside pedestal 6
It is provided with controller (not shown), controller receives the capacitance for the induction that anti-overflow module 9 is sent by coupler, with logical
Overcoupling device 3 controls the work of heat-generating disc 4, while display 5 and key 7 are additionally provided on pedestal 6, to be received by key 7
The control instruction of user, and corresponding control information is shown by display 5, based on control instruction control heat-generating disc 4 to bottle body 1
Internal water or food materials carries out heating cooking.
As shown in Fig. 2, the method for heating and controlling for heating vessel of the present embodiment includes:
Step S210, the heating vessel capacitance that capacitive sensing piece incudes when heated is obtained；
Step S220, judge whether the variable quantity of capacitance within a preset time interval is greater than the first preset threshold；
Step S230, in the case where the variable quantity of capacitance is greater than preset threshold, stop heating heating vessel；
In step S210, controller controls the heat-generating disc 4 of heating vessel according to the user instruction received first
Work, to heat the food materials or water inside heating vessel, anti-overflow module 9 obtains heating vessel capacitor when heated
The capacitance that sensing chip 10 incudes, and it is sent to controller.Wherein capacitive sensing piece 10 can sense surrounding parasitic capacitance,
Environment around the capacitive sensing piece 10 changes, as having bubble rising, relative capacity sense when heating vessel heating
When the installation site of piece 10 being answered to change, parasitic capacitance also changes, and anti-overflow module 9 passes through internal circuit and holds
The relevant algorithm of row, can detecte the changing value i.e. Δ V/ Δ t for the voltage in the parasitic capacitance within the unit time, should
Changing value is corresponding with the size of parasitic capacitance, thus can obtain the capacity namely electricity of the parasitic capacitance indirectly by the changing value
Hold the capacitance of sensing chip induction.Its specific internal circuit of anti-overflow module 9 and detection algorithm are existing technology, herein no longer
It repeats.
In step S220-S230, for the capacitance that the capacitive sensing piece 10 got incudes, in prefixed time interval
The capacitance value of this induction before and after interior acquisition simultaneously seeks its variation delta C=| C2-C1 |, and with this variable quantity and the first default threshold
Value compares, which is the time value constantly sampled to the capacitance, which can be according to specific number
It needs to take a suitable time according to processing, can such as take within such as 10 milliseconds of relatively short time interval or relatively long
Time such as several hundred milliseconds or several seconds, be specifically dependent upon according to experiment to the processor in data analysis precision and controller
Analysis ability demand selects a reasonable time, when the time value phase under the demand for the accuracy for being able to satisfy judging result
When to small such as 1ms, i.e., the approximate change rate Δ C/ Δ t for reflecting the capacitance.Known by experiment, in heating vessel plus
During thermal technology makees, when water level or food materials position do not reach capacitive sensing 10 installation site of piece, pass through capacitive sensing
The electric capacitance change very little that piece 10 detects generally is fluctuated in smaller range value or so, and as the water temperature of heating rises, liquid
When generating foam in body heating container and beginning to ramp up close to capacitive sensing 10 installation site of piece, electric capacitance change is obvious, such as believes
Constantly increase number at any time, when foam reaches 10 installation site of capacitive sensing piece, changes more obvious.And in heating vessel
When not heating, if there is substance in heating vessel or lateral wall reaches the installation site of capacitive sensing piece 10,
Capacitance can also change obviously, as added dilutional hyponatremia to be more than peak level so that having reached capacitive sensing piece in heating vessel
10 installation site, capacitance can change obviously.In order to avoid the case where above-mentioned error detection occurs, needing to limit is to liquid
Body heats the condition of container heating.Its specific time interval can be adopted using 50-500ms such as preferably 100ms time interval
The variable quantity of electricity capacity can determine whether to have had reached capacitive sensing for foam if its variable quantity is more than the first preset threshold
10 installation site of piece, there is spilling risk, needs the heating of closing liquid heating container, i.e. specifically controller control fever at this time
Disk 4 stops working.This first preset threshold can be determined by experiment.
Further, after the heating of closing liquid heating container, foam can decline, at this time if having been moved off capacitor
10 installation site of sensing chip, then its electric capacitance change reduces, when the electric capacitance change amount in its preset time is default less than second
When threshold value, then it can be identified as foam and have descended to safe position, do not have spilling risk, liquid can be then turned at this time and added
The heating of heat container.Here the second preset threshold be less than or equal to the first preset threshold, preferably less than the first preset threshold,
Corresponding foam drops to than detecting that the corresponding foam level of the first preset threshold is set low at this time, therefore can more determine and take off
From spilling risk.
The method for heating and controlling for heating vessel of the utility model embodiment, by heating vessel
Lateral wall installs capacitive sensing piece, to detect the capacitance of capacitive sensing piece induction when heated, and according between preset time
Every the electric capacitance change amount that this interior got incudes compared with the first preset threshold, judging this change amount signal greater than first
When preset threshold, the heating to heating vessel is closed.With this spilling for realizing heating vessel it is accurate detection and
Control, effectively prevents heating vessel and leads to the problem of failure accident caused by foam overflow when heated, also improve use
Family experience, and since capacitive sensing piece to be mounted on the lateral wall of heating vessel, it does not need to go deep into heating vessel
It is interior, it convenient for the installation of the capacitive sensing piece, and can be hidden in heating vessel, the overall beautiful of product is increased with this.
Further, the first embodiment based on the utility model for the method for heating and controlling of heating vessel,
In the second embodiment of the method for heating and controlling, it is pre- to judge whether the variable quantity of capacitance within a preset time interval is greater than first
If threshold value includes:
In the case where heating vessel internal liquid temperature is greater than preset temperature, judgement within a preset time interval should
Whether the variable quantity of capacitance is greater than the first preset threshold.
I.e. on the basis of first embodiment, incude in addition to obtaining the capacitive sensing piece 10 of heating vessel when heated
Capacitance, the temperature of 1 internal liquid of bottle body also while when obtaining heating.In the present embodiment, as shown in Figure 1, to obtain temperature
Signal is spent, health-promotion kettle can also further comprise the temperature sensor 8 being arranged in the bottom of bottle body 1, to detect 1 internal liquid of bottle body
Such as the temperature of water, the temperature signal that temperature sensor 8 detects issues controller.Because heating vessel when heated,
It is only heated to certain temperature and is just easy to produce foam, just start to generate bubble as temperature rises towards such as 90 DEG C or so of boiling
Foam, thus in the first embodiment by judging whether the variable quantity of capacitance within a preset time interval is greater than the first default threshold
When value carries out overflow checking, the temperature judgement of the liquid heated inside bottle body is also further added, and temperature can be adjusted conduct
The most important condition just starts the variation for carrying out rising capacitance such as when internal liquid temperature rises to 70 DEG C of preset temperature value
The judgement of amount can exclude to heat early period when capacitive sensing piece is generated sense by the interference of external substance in heating vessel in this way
Erroneous judgement, improves the accuracy of anti-overflow judgement with this caused by the variation for the capacitance answered.
Further, the first embodiment based on the utility model for the method for heating and controlling of heating vessel,
In 3rd embodiment of the utility model for the method for heating and controlling of heating vessel, further includes:
Before judging whether the variable quantity of capacitance within a preset time interval is greater than the first preset threshold, according to liquid
The heating mode for heating the setting of container determines corresponding first preset threshold.
For the heating vessel especially health-promotion kettle more complete to some functions, a variety of food materials, phase can be cooked
That answers such as heats up water in a variety of culinary art modes that can choose corresponding different food materials by key, Herb Tea, fruit tea, cooks congee, medicine
Meals, black tea, dried tremella soup etc. are that these food materials also have when it generates foam when food materials difference inside heating vessel
A part rises with floatation of foam, and then rises to 10 installation site of capacitive sensing piece, is existed by different food materials known to experiment
When the position, the size for the capacitance that anti-overflow module 9 is detected by capacitive sensing piece 10 is different, and is caused in preset time
The variable quantity of its interior signal is also different, thus in order to which more accurately judgement is overflowed, the difference determined for different food materials adds
Heat pattern determines corresponding different first preset thresholds, such as by experiment know that tremella rises to 10 installation position of capacitive sensing piece
When setting, the variable quantity of the capacitance incuded in caused preset time is bigger than other food materials, can be set at this time corresponding
First preset threshold is bigger than other food materials.Higher overflow checking accuracy is obtained with this.
The utility model also proposes a kind of heating control apparatus for heating vessel, using the heating control apparatus
Heating vessel specifically can be health-promotion kettle, structure is as shown in Figure 1, its specific structure includes bottle body 1, pot lid 2, bottle body
1 is mounted on pedestal 6, and is connect by the way that coupler 3 is arranged on pedestal 6 with bottle body 1, and the side of bottle body 1 is provided with handle 11,
It is additionally provided with display 5 and key 7 on its pedestal 6, to receive the control instruction of user by key 7, and it is aobvious by display 5
Show corresponding control information.Fig. 3 shows a functional block diagram of the heating control apparatus, which includes:
Capacitive sensing piece 10, capacitive sensing piece 10 are mounted on the lateral wall of heating vessel；
Heat-generating disc 4, for being heated to heating vessel, to heat water or food materials；
Controller 12, the controller 12 are arranged in 6 inside (not shown in figure 1) of pedestal, the controller 12 and capacitive sensing
Piece 10 and heat-generating disc 4 are separately connected, and for obtaining the capacitance of the induction of capacitive sensing piece 10, and are controlled and are generated heat according to the capacitance
Disk 4 works to heat to heating vessel.
Specifically, the controller 12 can judged based on the capacitance for obtaining the induction of capacitive sensing piece 10 default
In the case that the variable quantity of capacitance is greater than the first preset threshold in time interval, being judged as inside heating vessel at this time has
Risk is overflowed, control heat-generating disc 4 stops working, to stop heating heating vessel.
In the heating control apparatus, controller 12 is according to the user instruction received, first control heating vessel
Heat-generating disc 4 work, to heat the food materials or water inside heating vessel, controller obtains it by capacitive sensing piece 10
The value of the capacitance of induction, and it is sent to controller 12.Wherein capacitive sensing piece 10 can sense surrounding parasitic capacitance, when
Environment around the capacitive sensing piece 10 changes, as having bubble rising, relative capacity induction when heating vessel heating
When the installation site of piece 10 changes, parasitic capacitance also changes, and controller 12 passes through internal circuit and executes
Relevant algorithm can detecte the changing value i.e. Δ V/ Δ t for the voltage in the parasitic capacitance within the unit time, the change
Change value is corresponding with the size of parasitic capacitance, thus can obtain the capacity namely capacitor of the parasitic capacitance indirectly by the changing value
The capacitance of sensing chip induction.Its specific detection algorithm of controller 12 is existing technology, and details are not described herein.
For the capacitance that the capacitive sensing piece 10 got incudes, within a preset time interval this induction of acquisition front and back
Capacitance value and seek its variation delta C=| C2-C1 |, and with this variable quantity compared with the first preset threshold, the preset time
Between be divided into the time value constantly sampled to the capacitance, which can need to take one according to specific data processing
The suitable time, can such as take relatively short time interval such as within 10 milliseconds or relatively long time such as several hundred milliseconds or
Several seconds, it is specifically dependent upon the analysis ability demand according to experiment to the processor in data analysis precision and controller, in energy
Meet the one reasonable time of selection under the demand of the accuracy of judging result, it is as the relatively small such as 1ms of the time value, i.e., approximate
Reflect the change rate Δ C/ Δ t of the capacitance.Known by experiment, during heating vessel heating work, works as water
When position or food materials position do not reach capacitive sensing 10 installation site of piece, pass through the capacitance that capacitive sensing piece 10 detects
It varies less, is generally fluctuated in smaller range value or so, and as the water temperature of heating rises, bubble is generated in heating vessel
When foam is begun to ramp up close to capacitive sensing 10 installation site of piece, electric capacitance change is obvious, if signal constantly increases at any time, when
Foam reaches 10 installation site of capacitive sensing piece, changes more obvious.And when heating vessel does not heat, if there is object
Matter is in heating vessel or lateral wall reaches the installation site of capacitive sensing piece 10, and capacitance can also change obviously,
As added dilutional hyponatremia to be more than peak level so that having reached the installation site of capacitive sensing piece 10, capacitor in heating vessel
Amount can change obvious.In order to avoid the case where above-mentioned error detection occurs, needing to limit is in the item heated to heating vessel
Part.Its specific time interval can use the variable quantity of capacitance using 50-500ms such as preferably 100ms time interval, such as
Its variable quantity of fruit is more than that the first preset threshold then can determine whether to have had reached 10 installation site of capacitive sensing piece for foam, is had excessive
Risk out needs the heating of closing liquid heating container at this time, i.e., specifically controller control heat-generating disc 4 stops working.This
One preset threshold can be determined by experiment.
Further, as shown in figure 4, above-mentioned heating control apparatus may also include anti-overflow module 9, with 10 electricity of capacitive sensing piece
Connection, obtains the capacitance of its induction, and exports the capacitance to controller.This anti-overflow module 9 is mountable at this time in the liquid
It heats in container handle 11, it is close with the installation site of capacitive sensing piece 10 with this, convenient for the two connection.Or the two may be used also
To be that one namely anti-overflow module 9 are integrated in capacitive sensing piece 10, it is mounted on heating vessel lateral wall, it can with this
To save the installation procedure of individual anti-overflow module 9.
Further, controller 12 is further configured to:
It stops working in control heat-generating disc 4, after stopping heating heating vessel, also judges in preset time
Whether the variable quantity of capacitance is less than the second preset threshold in being spaced；
In the case where judging the variable quantity of capacitance less than the second preset threshold, control heat-generating disc 4 works, to liquid
Body heating container is heated, wherein the second preset threshold is less than or equal to the first preset threshold.
After the heating of closing liquid heating container, foam can decline, at this time if having been moved off capacitive sensing piece 10
Installation site, then its electric capacitance change reduces, when the electric capacitance change amount in its preset time is less than the second preset threshold, then
It can be identified as foam and have descended to safe position, do not have spilling risk, heating vessel can be then turned at this time
Heating.Here the second preset threshold is less than or equal to the first preset threshold, and preferably less than the first preset threshold corresponds at this time
Foam drop to than detecting that the corresponding foam level of the first preset threshold is set low, therefore can more determine and have been detached from spilling wind
Danger.And the two threshold values can be more preferably an interval difference.
The heating control apparatus for heating vessel of the utility model embodiment, by control 4 work of heat-generating disc
When making to heat to heating vessel, the capacitance that capacitive sensing piece 10 incudes is obtained, and judge between preset time
Whether it is greater than the first preset threshold every the variable quantity of interior capacitance, is greater than the first preset threshold in the variable quantity for judging capacitance
In the case where, control heat-generating disc 4 stops working, and to stop heating heating vessel, effectively prevents liquid with this
Heating container leads to the problem of failure accident caused by foam overflow when heated, and also the user experience is improved, and due to by capacitor
Sensing chip is mounted on the lateral wall of heating vessel, does not need to go deep into heating vessel, is convenient for the capacitive sensing piece
Installation, and can be hidden in heating vessel, the overall beautiful of product is increased with this.
Further, the first embodiment based on the utility model for the heating control apparatus of heating vessel,
The utility model for heating vessel heating control apparatus second embodiment in, the heating control apparatus further include as
Temperature sensor 8 shown in FIG. 1, is arranged in the bottom of bottle body 1, for detecting the temperature of 1 internal liquid of bottle body such as water, concurrently
To controller 12.Fig. 5 shows a functional block diagram of the heating control apparatus of the embodiment, and in the figure, controller 12 passes through
Temperature sensor 8 directly acquires the temperature of heating vessel internal liquid；Or as shown in fig. 6, temperature sensor 8
It may be coupled to anti-overflow module 9, anti-overflow module 9 gets the temperature of the heating vessel internal liquid of the detection of temperature sensor 8
After degree, it is then forwarded to controller 12.The controller 12 is further configured to:
The temperature detected is received from temperature sensor 8；
Judge whether temperature is greater than preset temperature；
In the case where judging that temperature is greater than preset temperature, judge that the variable quantity of capacitance within a preset time interval is
It is no to be greater than the first preset threshold.
Because heating vessel when heated, be only heated to certain temperature and be just easy to produce foam, in temperature
Such as 90 DEG C or so close to boiling are raised to just to start to generate foam, thus in the first embodiment by judging in prefixed time interval
When whether the variable quantity of interior capacitance is greater than the first preset threshold progress overflow checking, also further it is added in heating vessel
The temperature judgement of the liquid of portion's heating, and temperature can be adjusted and be used as the most important condition, such as when internal liquid temperature rises to 70 DEG C
Preset temperature value when, just start to carry out the judgement for rising the variable quantity of capacitance, can exclude to add in heating vessel in this way
Hot early period judges by accident caused by the electric capacitance change for generating and incuding when capacitive sensing piece is interfered by external substance, is improved with this
The accuracy of anti-overflow judgement.
Further, the first embodiment based on the utility model for the heating control apparatus of heating vessel,
In 3rd embodiment of the utility model for the heating control apparatus of heating vessel, which is further configured to:
Before judging whether the variable quantity of capacitance within a preset time interval is greater than the first preset threshold, according to liquid
The heating mode for heating the setting of container determines corresponding first preset threshold.
For the heating vessel especially health-promotion kettle more complete to some functions, a variety of food materials, phase can be cooked
That answers such as heats up water in a variety of culinary art modes that can choose corresponding different food materials by key, Herb Tea, fruit tea, cooks congee, medicine
Meals, black tea, dried tremella soup etc. are that these food materials also have when it generates foam when food materials difference inside heating vessel
A part rises with floatation of foam, and then rises to 10 installation site of capacitive sensing piece, is existed by different food materials known to experiment
When the position, the size of the capacitance for the induction that anti-overflow module 9 is detected by capacitive sensing piece 10 is different, and is caused pre-
If the variable quantity of its signal is also different in the time, thus in order to which more accurately judgement is overflowed, it is determined for different food materials
Different heating mode determines corresponding different first preset thresholds, such as by experiment know that tremella rises to capacitive sensing piece 10
When installation site, the variable quantity of the capacitance incuded in caused preset time is bigger than other food materials, can be set at this time
Corresponding first preset threshold is bigger than other food materials.Higher overflow checking accuracy is obtained with this.
Further, the first embodiment based on the utility model for the heating control apparatus of heating vessel,
In fourth embodiment of the utility model for the heating control apparatus of heating vessel, as shown in fig. 7, the device also wraps
It includes:
Zero crossing detection module 13, the input terminal of zero crossing detection module 13 connect AC power source, zero crossing detection module 13 it is defeated
Outlet is connected to controller, and zero crossing detection module 13 is used to detect the zero passage letter for the AC power source for being input to heating control apparatus
Number；
First switch module 15, the both ends of the switch of first switch module 15 are connected on power supply of the AC power source to heat-generating disc
In circuit, the control terminal of first switch module 15 connects controller；
Controller controls the switch state of first switch module 15 according to zero cross signal, to control heat-generating disc work.
Fig. 7 shows the circuit diagram of the heating control apparatus of the present embodiment, in the figure, in controller, that is, figure
MCU12, heat-generating disc 4 are the electric heating tube HR in figure, and anti-overflow module 9 is the OV_CK module 9 in figure, and capacitive sensing piece 10 is
TB10 in figure.
The circuit of the heating control apparatus further includes Switching Power Supply 16, provides DC power supply described in work for the circuit,
Specifically there are 5V and two groups of 12V.
Specifically, further include the temperature sensing circuit based on temperature sensor 8 in the circuit of the heating control apparatus,
The bleeder circuit that the temperature sensing circuit is made of thermistor RTC and resistance 7, wherein thermistor RTC, when fluid temperature not
Meanwhile thermistor RTC resistance value is different, the voltage of bleeder circuit output is different.Temperature sensing circuit output end connection
Anti-overflow module 9, anti-overflow module 9 are passed through the difference of detector output voltage, the liquid inside heating vessel are detected with this
Temperature, the temperature of concurrent liquor charging body to MCU12.
Specifically, first switch module 15 includes the first bidirectional triode thyristor SCR1, second resistance R2, the 4th resistance R4 and the
One optocoupler U1；
The first anode and second plate of first bidirectional triode thyristor SCR1 are respectively the both ends of the switch of first switch mould, the
The controlled stage of one two-way controllable silicon SCR 1 connects one end of the bilateral diode of the first optocoupler U1；
One end of the other end connection second resistance R2 of the bilateral diode of first optocoupler U1, the other end of second resistance R2
The second plate of the first bidirectional triode thyristor SCR1 is connected, the cathode of the light emitting diode of the first optocoupler U1 connects the 4th resistance R4's
One end, the other end ground connection of the 4th resistance R4, the anode of the light emitting diode of the first optocoupler U1 is the control of first switch module 15
End processed.
Further, first switch module 15 can also include with the concatenated 3rd resistor R3 of second resistance R2, with second
Resistance plays metering function together.
Specifically, zero crossing detection module 13 includes the 6th resistance R6, first diode D1, the second optocoupler U2 and the 7th resistance
R7；
One end of 6th resistance R6 is an input terminal of zero crossing detection module 13, the other end and the one or two of the 6th resistance R6
The cathode of pole pipe D1 is connected to the anode of the Light emitting diode of the second optocoupler U2 altogether, the anode of first diode D1 and the second optocoupler U2's
The cathode of Light emitting diode is another input terminal of zero crossing detection module 13；
One end of the collector and the 7th resistance R7 of the triode of second optocoupler U2 is connected to the defeated of zero crossing detection module 13 altogether
Outlet, the emitter ground connection of the triode of the second optocoupler U2, the other end of the 7th resistance R7 connect DC power anode.
Foregoing circuit working principle is as follows: AC supply voltage is input to the second optocoupler U2's after the 6th resistance R6 decompression
Light emitting diode obtains half-wave signa through its halfwave rectifier, the zero cross signal after the second optocoupler U2 output isolation, specific
Waveform is as shown in figure 8, MCU12 is heated according to the zero cross signal detected, and according to the setting power of user's acquisition, such as liquid
Container total power is 1000W, when power set by user only 400W less than normal, the rising time point of opposite zero cross signal
Prefixed time interval export a PWM pulse signal to the first optocoupler U1 light emitting diode anode tap, turn it on it is luminous,
So that the bilateral diode of the first optocoupler U1 is connected, alternating current L line through heat-generating pipe HR through second resistance R2, this two-way two
Pole pipe powers to the control electrode G of the first bidirectional triode thyristor SCR1, turns it on, and alternating current can be through heat-generating pipe HR, first two-way
Second plate A2, the first anode A1 of controllable silicon SCR 1 form access, so that heat-generating pipe HR work is to heating vessel inside
Liquid heating.Since PWM start pulse signal is relatively narrow, when the zero passage point moment that the first half cycle of the alternating voltage terminates first
Bidirectional triode thyristor SCR1 is disconnected automatically, because of no PWM trigger pulse voltage within the later half period of the alternating voltage, therefore not
It can be connected.The voltage waveform as shown in Figure 6 loaded on its heat-generating pipe HR, that is, heat-generating disc 4 formed.
When foregoing circuit works, pwm pulse is relatively narrow, and the first bidirectional triode thyristor SCR1 can only be in the preceding half cycle of alternating voltage
Conducting in phase, for thus there was only the half of its total power for the power maximum of electric forming to heat-generating pipe HR, to obtain bigger confession
Electrical power can widen pwm pulse, make its failing edge time point after the intermediate zero passage point moment of alternating voltage, specific such as Fig. 9
Shown, after C2 moment of its failing edge time point of pwm pulse in figure, the first bidirectional triode thyristor SCR1 is by being somebody's turn to do at this time
It can still continue to be connected after zero crossing, so that the entire later half period is all connected, so that providing heat-generating pipe HR bigger performance number.
It, can for the angle of flow according to the first bidirectional triode thyristor SCR1 of flexible control within each half period of alternating voltage
To improve the circuit of above-mentioned zero crossing detection module 13, it is set to export zero cross signal in each half period of alternating voltage, in this way
MCU12 according to the zero cross signal can the output pwm signal angle of flow that makes this silicon-controlled in each half cycle controlled,
So that the watt level flexibility and changeability provided heat-generating pipe HR.
Further, the fourth embodiment based on the utility model for the heating control apparatus of heating vessel,
In the 5th embodiment of the utility model for the heating control apparatus of heating vessel, as shown in fig. 7, the device further includes
Second switch module 14:
The both ends of the switch of second switch module 14 are in parallel with the both ends of the switch of first switch module 15, second switch mould
The control terminal of block 14 connects controller 12.
Controller 12 obtains the heating power of current liquid heating container, is greater than the feelings of predetermined power threshold value in heating power
Under condition, control second switch module 14 is open-minded, and controls the closing of first switch module, to control heat-generating disc work.
Specifically, second switch module 14 includes the first relay RY1 and the first NPN type triode Q1；
The both ends of the switch of the coil of first relay RY1 are the both ends of the switch of second switch module 14, the first relay
One end of the coil of device RY1 connects DC power supply, and the other end of the coil of the first relay RY1 connects the first NPN type triode
The collector of Q1, the emitter ground connection of the first NPN type triode Q1, the base stage of the first NPN type triode Q1 is second switch mould
The control terminal of block 14.
When MCU12 exports high level, i.e., controllable first NPN type triode Q1 is connected into the first relay RY1 of driving
Coil make switch be attracted.
In the circuit, can further include direction be connected in parallel on the first relay RY1 coil both ends the two or two
Pole pipe D2 plays the induced electromotive force generated on coil when disconnecting to the relay and releases, prevents its overtension from damaging
First NPN type triode Q1 can also include the 5th resistance R5 for being connected to the first NPN type triode Q1 base stage to ground, play
When MCU12 is without control signal output the triode is reliably ended.
Since the first bidirectional triode thyristor SCR1 is current mode device, passes through when electric current is limited and electric current is big and is easy fever,
After the rule pairing of parts selection and the suitable silicon-controlled device of current power, when heat-generating pipe HR is in full power operation
When situation, this is silicon-controlled by electric current maximum, if the power of type selecting is relatively small, it is serious very to will lead to fever when working long hours
To damage.Occur for anti-phenomenon here, in the switch for increasing routing relay RY1 work, since relay RY1 opens for machinery
Pass type working principle, when work generate heat it is much smaller, therefore when controller 12 gets the heating vessel set by user
Operating power very as large as be more than predetermined power threshold value when, then export control signal make relay RY1 be connected, first it is two-way can
It controls silicon SCR1 to close, fever can be substantially reduced, increase the functional reliability of entire circuit.As heating vessel total power is
When 1000W, predetermined power threshold value may be configured as being greater than 800W, be more than that the value enables relay RY1 control heat-generating pipe HR work.
The utility model also proposes a kind of heating vessel, which includes above-mentioned computer heating control dress
It sets, which is further preferably health-promotion kettle, and structure chart is as shown in Figure 1, the anti-overflow module 9 is mounted on this supports
In the handle 11 of raw pot, capacitive sensing piece 10 is arranged close on the lateral wall of bottle body 1 of handle 11, therebetween by leading
Line connection, to detect the capacitance sensed, and the coupler 3 by being arranged on pedestal 6 sends setting on the base
12 (not shown in figure 1) of controller, and the bottom of bottle body 1 be arranged temperature sensor 8, for detecting inside bottle body 1
The temperature of liquid such as water, the temperature sensor 8 are connect with anti-overflow module 9 by conducting wire, to realize that anti-overflow module 9 gets the temperature
Signal is spent, and is sent to above-mentioned capacitance and temperature signal by one in coupler 3 based on serial ports UART communication mode
Controller 12, controller 12 controls the work of heat-generating disc 4 according to two signals here, to heat to health-promotion kettle, heats health
The food materials inside water or culinary art inside pot.
Specifically, the topology view of capacitive sensing piece 10 is as shown in Figure 10, it is a flake, can be as in figure
It is can be between the rectangular perhaps other shapes capacitive sensing piece 10 and health-promotion kettle lateral wall through glue or double-sided adhesive realization
It is fixedly connected, the air gap between capacitive sensing piece 10 and health-promotion kettle lateral wall controls within 3mm, to realize to capacitor sense
The accurate detection for the capacitance for answering piece 10 to incude.In Fig. 1, capacitive sensing piece 10 is connect with anti-overflow module 9 by conducting wire, another
It can also be that one namely anti-overflow module 9 are integrated in capacitive sensing piece 10 both in one scheme, be fixed at outside health-promotion kettle
On side wall, the installation of individual anti-overflow module 9 can be saved with this.
As indicated at 11,5 signal wires include the signal wire zero curve (N) of forceful electric power to the route line arrangement schematic diagram of coupler 3
32, firewire (L) 33, weak electric signal line ground wire (GND) 31, DC power anode (VCC) line 34 and serial port communication line (UART) 35,
Putting in order for these lines is also possible to other sequences.In the figure, capacitance and temperature signal pass through serial ports by anti-overflow module 9
Connection (UART) 35 is sent to controller 12, is realized with this and sends two kinds of signals with 5 general couplers, realized
Otherwise the versatility of coupler needs to increase by one i.e. 6 coupler, is unfavorable for the generalization of coupler, brings cost with this
Increase.
By the heating control apparatus, anti-overflow detection can be effectively realized, so that heating vessel be prevented to heat
When there is spillover, and the capacitive sensing piece for anti-overflow detection is arranged close to the lateral wall of the heating vessel of handle
On, relatively existing anti-overflow probe is mounted on inside heating vessel, the installation when manufacture of capacitive sensing piece can be facilitated, and
It is hidden on the side wall of heating vessel and also increases the overall beautiful of product.And the heating vessel can realize heating function
Rate is adjustable, and different capacity control can be realized when food materials are cooked or heated up water, and provides the user with different heating power selections,
The user experience is improved.
The embodiments of the present invention additionally provide computer program product, including program instruction, and the program instruction is controlled
Device processed enables the controller to realize any heating control for heating vessel in above-described embodiment when executing
Method processed.
The embodiments of the present invention additionally provide storage medium, are stored thereon with computer-readable instruction, the computer
It enables the controller to execute the heating for heating vessel in above-described embodiment when readable instruction is executed by a controller
Control method.
It will be appreciated by those skilled in the art that realizing that all or part of the steps in above embodiment method is can to lead to
Program is crossed to instruct relevant hardware and complete, which is stored in a storage medium, including some instructions use so that
One (can be single-chip microcontroller, chip etc.) or processor (processor) execute each embodiment the method for the application
All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
In the description of this specification, the description meaning of reference term " first embodiment ", " second embodiment ", " example " etc.
Refer to that specific method, device or feature described in conjunction with this embodiment or example are contained at least one implementation of the utility model
In example or example.In the present specification, schematic expression of the above terms are necessarily directed to identical embodiment or show
Example.Moreover, specific features, method, apparatus or the feature of description can be in any one or more of the embodiments or examples to close
Suitable mode combines.In addition, without conflicting with each other, those skilled in the art can will be described in this specification
The feature of different embodiments or examples and different embodiments or examples is combined.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (9)
1. a kind of heating control apparatus for heating vessel, which is characterized in that the heating control apparatus includes:
Capacitive sensing piece, the capacitive sensing piece are mounted on the lateral wall of heating vessel；
Heat-generating disc, for being heated to the heating vessel；
Controller is separately connected with the capacitive sensing piece and the heat-generating disc, for obtaining the capacitive sensing piece induction
Capacitance, and the heat-generating disc work is controlled to heat to heating vessel according to the capacitance.
2. heating control apparatus as described in claim 1, which is characterized in that the heating control apparatus further includes anti-overflow mould
Block,
The test side of the anti-overflow module connects the capacitive sensing piece, and the output end of the anti-overflow module connects the control
Device, the anti-overflow module are used to obtain the capacitance of the capacitive sensing piece induction, and send the capacitance to the control
Device.
3. heating control apparatus as described in claim 1, which is characterized in that further include:
The input terminal of zero crossing detection module, the zero crossing detection module connects AC power source, the output of the zero crossing detection module
End is connected to the controller, and the zero crossing detection module is for detecting the AC power source for being input to the heating control apparatus
Zero cross signal；
First switch module, the both ends of the switch of the first switch module are connected on the AC power source to the heat-generating disc
In current supply circuit, the control terminal of the first switch module connects the controller；
The controller controls the switch state of the first switch module according to the zero cross signal, to control heat-generating disc work
Make.
4. heating control apparatus as claimed in claim 2, which is characterized in that temperature sensor connects the anti-overflow module, institute
It states anti-overflow module and fluid temperature inside the heating vessel is detected by the temperature sensor, and send the liquid
Temperature is to the controller.
5. heating control apparatus as claimed in claim 3, which is characterized in that further include second switch module:
The both ends of the switch of the second switch module are in parallel with the both ends of switch of the first switch module, and described second opens
The control terminal for closing module connects the controller；
The controller obtains the heating power of presently described heating vessel, is greater than predetermined power threshold in the heating power
In the case where value, it is open-minded to control the second switch module, and controls the first switch module and closes, to control the fever
Disk work.
6. heating control apparatus as claimed in claim 3, which is characterized in that the first switch module include first it is two-way can
Control silicon, second resistance, the 4th resistance and the first optocoupler；
The first anode and second plate of first bidirectional triode thyristor are respectively the both ends of the switch of the first switch mould, institute
State the first bidirectional triode thyristor controlled stage connect first optocoupler bilateral diode one end；
The other end of the bilateral diode of first optocoupler connects one end of the second resistance, the second resistance it is another
End connects the second plate of first bidirectional triode thyristor, the cathode connection the described 4th of the light emitting diode of first optocoupler
One end of resistance, the other end ground connection of the 4th resistance, the anode of the light emitting diode of first optocoupler is described first
The control terminal of switch module.
7. heating control apparatus as claimed in claim 5, which is characterized in that the second switch module includes the first relay
With the first NPN type triode；
The both ends of the switch of the coil of first relay be the second switch module switch both ends, described first after
One end of the coil of electric appliance connects DC power supply, and the other end of the coil of first relay connects first NPN type three
The collector of pole pipe, the emitter ground connection of first NPN type triode, the base stage of first NPN type triode is described
The control terminal of second switch module.
8. heating control apparatus as claimed in claim 3, which is characterized in that the zero crossing detection module include the 6th resistance,
First diode, the second optocoupler and the 7th resistance；
One end of 6th resistance is an input terminal of the zero crossing detection module, the other end of the 6th resistance and described
The cathode of first diode is connected to the anode of the light emitting diode of second optocoupler, the anode of the first diode and institute altogether
The cathode for stating the Light emitting diode of the second optocoupler is another input terminal of the zero crossing detection module；
One end of the collector of the triode of second optocoupler and the 7th resistance is connected to the zero crossing detection module altogether
Output end, the emitter ground connection of the triode of second optocoupler, the other end of the 7th resistance connect DC power anode.
9. a kind of heating vessel, which is characterized in that the heating vessel includes such as any one of claim 1-8
The heating control apparatus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821824092.5U CN209269378U (en) | 2018-11-06 | 2018-11-06 | Heating control apparatus and heating vessel for heating vessel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010757A (en) * | 2019-12-20 | 2020-04-14 | 深圳市鑫汇科股份有限公司 | Electromagnetic heating method and electromagnetic heating device |
| CN112568698A (en) * | 2020-12-04 | 2021-03-30 | 珠海格力电器股份有限公司 | Cooking control method and device, cooking appliance and readable storage medium |
| CN113640336A (en) * | 2021-08-23 | 2021-11-12 | 广东纯米电器科技有限公司 | Boiling point detection method, device, circuit and cooking utensil |
-
2018
- 2018-11-06 CN CN201821824092.5U patent/CN209269378U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010757A (en) * | 2019-12-20 | 2020-04-14 | 深圳市鑫汇科股份有限公司 | Electromagnetic heating method and electromagnetic heating device |
| CN111010757B (en) * | 2019-12-20 | 2022-03-18 | 深圳市鑫汇科股份有限公司 | Electromagnetic heating method and electromagnetic heating device |
| CN112568698A (en) * | 2020-12-04 | 2021-03-30 | 珠海格力电器股份有限公司 | Cooking control method and device, cooking appliance and readable storage medium |
| CN113640336A (en) * | 2021-08-23 | 2021-11-12 | 广东纯米电器科技有限公司 | Boiling point detection method, device, circuit and cooking utensil |
| CN113640336B (en) * | 2021-08-23 | 2023-07-14 | 广东纯米电器科技有限公司 | Boiling point detection method, boiling point detection device, boiling point detection circuit and cooking utensil |
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