CN107884032A - Electric cooking pot and the anti-spilled detection means for it - Google Patents
Electric cooking pot and the anti-spilled detection means for it Download PDFInfo
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- CN107884032A CN107884032A CN201610878454.8A CN201610878454A CN107884032A CN 107884032 A CN107884032 A CN 107884032A CN 201610878454 A CN201610878454 A CN 201610878454A CN 107884032 A CN107884032 A CN 107884032A
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- 238000001514 detection method Methods 0.000 title claims abstract description 154
- 238000010411 cooking Methods 0.000 title claims abstract description 103
- 239000006260 foam Substances 0.000 claims abstract description 253
- 230000001939 inductive effect Effects 0.000 claims abstract description 129
- 230000005574 cross-species transmission Effects 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims description 34
- 239000012212 insulator Substances 0.000 claims description 30
- 230000006698 induction Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000009835 boiling Methods 0.000 description 14
- 230000008859 change Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 241000209094 Oryza Species 0.000 description 6
- 235000007164 Oryza sativa Nutrition 0.000 description 6
- 235000009566 rice Nutrition 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/56—Preventing boiling over, e.g. of milk
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The invention discloses a kind of electric cooking pot and the anti-spilled detection means for it, the device includes：Foam detection module, it includes multiple foam inductive components, height between the set location and horizontal plane of each foam inductive component gradually uprises successively, wherein, when each foam inductive component is sensing steam bubble caused by electric cooking pot, the capacitance of foam detection module changes；Capacitance detecting chips, capacitance detecting chips are connected with foam detection module, and capacitance detecting chips generate foam detection signal by detecting the capacitance variation situation of foam detection module；Main control chip, main control chip are communicated to receive foam detection signal with capacitance detecting chips, and judge whether electric cooking pot occurs spillover according to foam detection signal.This prevents erroneous judgement, improves foam accuracy of detection, can both ensure that heating process was fully seethed with excitement, and ensure that electric cooking pot did not produced spilling, and realizes the connectorless detection of foam, securely and reliably.
Description
Technical field
The present invention relates to family's electro-technical field, more particularly to a kind of anti-spilled detection means and one kind for electric cooking pot
Electric cooking pot.
Background technology
Electric cooking pot in correlation technique sets steam valve in upper lid, will be staved by the foam of steam valve so that steam
Steam foam becomes liquid backflow.But if electric cooking pot adds that water is slightly more, heating power is excessive or in highlands,
When producing substantial amounts of steam bubble, steam valve is difficult to all steam bubbles becoming liquid backflow, so as to cause a large amount of steam bubbles
Foam overflows, and influences rice mouthfeel, and can make Kitchen stand table top dirty, it is difficult to clean.
Correlation technique propose it is a kind of increasing electrode on lid on electric cooking pot come by way of detecting spilling, still,
Correlation technique has the drawback that electrode is directly connected to circuit as conductor, so as in order to avoid causing human electric shock, all can
Separated using insulating power supply with forceful electric power, add manufacturing cost, and assembly technology is also more complicated.In addition, in correlation technique
In, prevent steam bubble from overflowing using low-power heating, cause heating process to be seethed with excitement insufficient, rice mouthfeel is poor.
Therefore, correlation technique needs to be improved.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of anti-spilled detection means for electric cooking pot, and the equipment safety is reliable, can both ensure electricity
Cooking pot fully seethes with excitement and can prevent foam overflow.
It is another object of the present invention to propose a kind of electric cooking pot.
To reach above-mentioned purpose, a kind of anti-spilled detection for electric cooking pot that one aspect of the present invention embodiment proposes fills
Put, including：Foam detection module, the foam detection module include multiple foam inductive components, each foam sense group
Height between the set location and horizontal plane of part gradually uprises successively, wherein, sensing in each foam inductive component
To the capacitance of the foam detection module changes during steam bubble caused by the electric cooking pot；Capacitance detecting chips,
The capacitance detecting chips are connected with the foam detection module, and the capacitance detecting chips detect mould by detecting the foam
The capacitance variation situation of block is to generate foam detection signal；Main control chip, the main control chip and the capacitance detecting chips
Communicated to receive the foam detection signal, and judge whether the electric cooking pot occurs according to the foam detection signal
Spillover.
The anti-spilled detection means for electric cooking pot proposed according to embodiments of the present invention, sets multiple foam sense groups
Part, when each foam inductive component senses steam bubble caused by electric cooking pot, the capacitance of foam detection module occurs
Change, capacitance detecting chips generate foam detection signal, master control core by detecting the capacitance variation situation of foam detection module
Piece judges whether electric cooking pot occurs spillover according to foam detection signal.This prevents erroneous judgement, improves foam detection
Precision, and then can both ensure that heating process was fully seethed with excitement, and can ensures that electric cooking pot does not produce spilling.Moreover, realize bubble
The connectorless detection of foam, human body will not contact electric conductor, securely and reliably, without being powered using insulating power supply, reduce manufacture
Cost, simplify assembly technology.
According to one embodiment of present invention, each foam inductive component includes foam contacting portion and induction part, its
In, the foam contacting portion is insulator, and the induction part is electric conductor, and the insulator leads the steam bubble with described
Electric body is isolated.
According to the specific embodiment of the present invention, the insulator is close to set with the electric conductor.
According to the specific embodiment of the present invention, the thickness of the insulator can be 1-10mm.
According to one embodiment of present invention, examined again with the electric capacity after the multiple foam inductive component is connected together
Chip is surveyed to be connected.
According to the present invention a specific embodiment, the multiple foam inductive component be connected together after again by first
Resistance is connected with the capacitance detecting chips.
According to another embodiment of the invention, each foam inductive component respectively with the capacitance detecting chips phase
Even.
According to the specific embodiment of the present invention, each foam inductive component respectively by second resistance with it is described
Capacitance detecting chips are connected.
According to one embodiment of present invention, each foam inductive component is arranged at the steam of the electric cooking pot
In passage or the electric cooking pot upper lid lower surface.
To reach above-mentioned purpose, a kind of electric cooking pot that another aspect of the present invention embodiment proposes, including described be used for
The anti-spilled detection means of electric cooking pot.
The electric cooking pot proposed according to embodiments of the present invention, by the anti-spilled detection means of above-described embodiment, it can prevent
Erroneous judgement, foam accuracy of detection is improved, and then can both ensure that heating process was fully seethed with excitement, and can ensures that electric cooking pot does not produce
Overflow.Moreover, realizing the connectorless detection of foam, human body will not contact electric conductor, securely and reliably, without using isolation electricity
Source powers, and reduces manufacturing cost, simplifies assembly technology.
According to the specific embodiment of the present invention, the electric cooking pot can be electric cooker or electric pressure cooking saucepan.
Brief description of the drawings
Fig. 1 is the block diagram of the anti-spilled detection means for electric cooking pot according to embodiments of the present invention；
Fig. 2 is the structural representation of foam inductive component according to an embodiment of the invention；
Fig. 3 is the structural representation according to the anti-spilled detection means for electric cooking pot of a specific embodiment of the invention
Figure；
Fig. 4 is illustrated according to the installation of the anti-spilled detection means for electric cooking pot of a specific embodiment of the invention
Figure；
Fig. 5 is shown according to the structure of the anti-spilled detection means for electric cooking pot of another specific embodiment of the invention
It is intended to；
Fig. 6 is the structural representation according to the foam inductive component of a specific embodiment of the invention；And
Fig. 7 is the structural representation according to the foam inductive component of a specific embodiment of the invention.
Reference：
Foam detection module 10, capacitance detecting chips 20 and main control chip 30；
Foam inductive component 101；Foam contacting portion 11 and induction part 12；Insulator 100 and electric conductor 200；
First foam inductive component 101A and the second foam inductive component 101B；Steam valve seat 4；
First resistor R1 and second resistance R2；
Detection faces 110 and accommodating chamber 120；
Mounting seat 300, detection lug 400, mounting bracket 500 and elastic component 600；Groove 310.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings come describe the embodiment of the present invention proposition electric cooking pot and the anti-spilled detection means for it.
Fig. 1 is the block diagram of the anti-spilled detection means for electric cooking pot according to embodiments of the present invention.Such as Fig. 1
Shown, the anti-spilled detection means includes：Foam detection module 10, capacitance detecting chips 20 and main control chip 30.
Wherein, foam detection module 10 includes multiple foam inductive components 101, the setting of each foam inductive component 101
Height between position and horizontal plane gradually uprises successively, wherein, sensing electric cooking pot in each foam inductive component 101
The capacitance of foam detection module 10 changes during caused steam bubble；Capacitance detecting chips 20 and foam detection module 10
Be connected, capacitance detecting chips 20 by detecting the capacitance variation situation of foam detection module 10 to generate foam detection signal,
Wherein, the power end of capacitance detecting chips 20 is connected with default power vd D, presets power vd D and is used to be capacitance detecting chips 20
Power supply；Main control chip 30 is communicated with capacitance detecting chips 20 to receive foam detection signal, and according to foam detection signal
Judge whether electric cooking pot occurs spillover, wherein, the power end of main control chip 30 is connected with default power vd D, presets electricity
Source VDD is used to power for main control chip 30.
According to the specific embodiment of the present invention, multiple foam inductive components 101 can be two or more foams
Inductive component 101.
Specifically, foam detection module 10 includes multiple foam inductive components 101, and each foam inductive component 101
Set location and horizontal plane between height gradually uprise successively, each foam inductive component 101 is touching steam bubble
When capacitance change.After the meter Shui of the interior pot of interior pot is heated to boiling by electric cooking pot, steam caused by boiling
Foam will touch the foam inductive component 101 for being arranged on diverse location, and capacitance detecting chips 20 can detect foam inspection in real time
The capacitance variation amount of module 10 is surveyed, and foam detection signal, capacitance detecting core are generated according to the capacitance variation amount detected
Piece 20 with main control chip 30 by being communicated so that foam detection signal is sent into main control chip 30, and main control chip 30 is according to bubble
Foam detection signal judges whether electric cooking pot occurs spillover.
For example, when multiple foam inductive components 101 are two, if steam bubble caused by boiling, which touches, sets position
The relatively low foam inductive component of height between horizontal plane is put, then capacitance detecting chips 20 generate the first foam detection signal；
If steam bubble caused by boiling touches the higher foam inductive component of height between set location and horizontal plane, electricity
Hold detection chip 20 and generate the second foam detection signal.If main control chip 30 receives the first foam detection signal, that is, only have
The capacitance of the relatively low foam inductive component 101 of height between set location and horizontal plane changes, then judges boiling not
Spillover does not occur for foot, electric cooking pot, and main control chip 30 controls electric cooking pot to keep present output power constant；If master control
Chip 30 receives the second foam detection signal, i.e. set location and horizontal plane again after the first foam detection signal is received
Between the capacitance of the higher foam inductive component 101 of height also change, then judge violent enough, the electric cooking pot that seethes with excitement
It will overflow, and control the present output power of electric cooking pot to reduce or control electric cooking pot to stop heating, to prevent from steaming
Steam foam overflows.
Thus, the anti-spilled detection means can prevent erroneous judgement, improve foam accuracy of detection, and then can both ensure to heat
Process is fully seethed with excitement, and and can ensures that electric cooking pot does not produce spilling.Moreover, realizing the connectorless detection of foam, human body is not
Electric conductor can be contacted, securely and reliably, without being powered using insulating power supply, manufacturing cost is reduced, simplifies assembly technology.
According to one embodiment of present invention, as shown in Fig. 2 each foam inductive component 101 includes foam contacting portion 11
With induction part 12, wherein, foam contacting portion 11 is insulator 100, and induction part 12 is electric conductor 200, and insulator 100 is by steam bubble
Foam is isolated with electric conductor 200.Specifically, insulator 100 is used to contact with steam bubble, and insulator 100 will steam
Steam foam is isolated with electric conductor 200, so as to carry out the detection of the connectorless of foam.
Specifically, as shown in Fig. 2 insulator 100 defines the unlimited accommodating chamber 120 in upper surface, and electric conductor 200
Upper surface, lower surface and side are defined, wherein, electric conductor 200 is located in accommodating chamber 120, insulator 100 while coated with conductive
The lower surface and side of body 200, and the upper surface of electric conductor 200 is exposed from insulator 100, in order to capacitance detecting chips 20
It is connected.So, by the combination of insulator 100 and electric conductor 200, condenser type foam inductive component 10 can be formed.
In electric cooking pot during rice water not boiling in pot, the foam contacting portion 11 of foam inductive component 101 not in contact with to
Steam bubble, each foam inductive component 101 only parasitic capacitance of itself in foam detection module 10；The pot in electric cooking pot
During interior rice water ebuillition of heated, caused steam bubble and the foam contacting portion 11 of foam inductive component 101 and induction part 12 it
Between form electric capacity, according to the decision formula of electric capacity：(wherein, ε is dielectric constant, and S is face surface area, and d is pole plate
Between distance) understand, the rice water ebuillition of heated in electric cooking pot in pot is more violent, and caused steam bubble is more, foam contacting
The area that portion 11 is covered by steam bubble is bigger, and the face surface area S between pole plate is bigger, then the capacitance of foam detection module 10
Variable quantity is bigger.
Thus, foam detecting device is isolated steam bubble with electric conductor 200 by insulator 100, passes through insulation
Body 100 and steam bubble mediate contact, and steam bubble is detected by detecting the capacitance variation of foam inductive component 101,
So as to realize the connectorless detection of foam.Also, erroneous judgement can be prevented, improves foam accuracy of detection, and then can both protect
Card heating process is fully seethed with excitement, and and can ensures that electric cooking pot does not produce spilling.
According to the specific embodiment of the present invention, insulator 100 is close to set with electric conductor 200.
According to the specific embodiment of the present invention, the thickness of insulator 100 can be 1-10mm.
Specifically, it is according to the decision formula of electric capacity：Understand, the thickness of insulator 100 is bigger, pole plate spacing
Bigger from d, in the case of steam bubble spill-out identical, the variable quantity of electric capacity is smaller.So, can select as the case may be
Select the thickness of insulator 100.
In one embodiment of the invention, each foam inductive component 101 is arranged at the steam channel of electric cooking pot
The upper lid lower surface of interior or electric cooking pot, and the setting height of each foam inductive component 101 gradually uprises successively.In other words,
Distance gradually uprises successively between each foam inductive component 101 and the liquid level of rice aqueous mixtures.
Also, the setting height of foam inductive component 101 is higher, and foam inductive component 101 also can be closer to steam channel
Interior steam (vapor) outlet A.
Specifically, can be by the lug boss in the setting different height of steam channel 3, set foam inductive component 101
Put in different height.
For example, as shown in figure 4, setting two foam inductive components 101 in the steam channel 3 of electric cooking pot, i.e.,
First foam inductive component 101A and the second foam inductive component 101B, wherein, the second foam inductive component 101B is arranged on steaming
The rear end of vapour passage 3, and the second foam inductive component 101B is arranged on the upper surface inside steam channel 3, the sensing of the first foam
Component 101A is arranged on the front end of steam channel 3, and the first foam inductive component 101A is arranged on the lug boss 301 of upper surface
On, thus, the second foam inductive component 101B setting height of the setting height higher than the first foam inductive component 101A.
It should be appreciated that the direction of the circulating direction of steam as shown by the arrows in Figure 4 in steam channel 3, from arrow
Change direction, which can be seen that after steam bubble produces, can enter steam valve seat 4, and gradually be leaned on to the steam (vapor) outlet A of steam channel 3
Closely, and gradually hoist close, therefore steam bubble first contacts the first foam inductive component 101A, then contact the sensing of the second foam
Component 101B.
According to one embodiment of present invention, after multiple foam inductive components 101 are connected together again with capacitance detecting core
Piece 20 is connected.Say, multiple foam inductive components 101 link together in a series arrangement after again with the phase of capacitance detecting chips 20
Even.
Specifically, electricity is accessed after being connected together between the induction part 12 of multiple foam inductive components 101 by conductor
Hold detection chip 20.According to the specific embodiment of the present invention, as shown in figure 3, multiple phases of foam inductive component 101 are connected in one
It is connected again by first resistor R1 with capacitance detecting chips 20 after rising.Wherein, first resistor R1 is used for foam inductive component 101
Capacitance variation amount signal be filtered processing, so as to play jamproof effect.
According to the specific example of the present invention, first resistor R1 resistance value can be 10 Ω to 10k Ω.
Specifically, as shown in Figures 3 and 4, foam inductive component 101 can be two, i.e. the first foam inductive component 101A
With the second foam inductive component 101B, the first foam inductive component 101A foam inductive component 101B's of induction part 12 and second
Induction part 12 is connected by first resistor R1 with capacitance detecting chips 20 again after being connected by conductor, so, capacitance detecting chips
20 generate foam detection letter according to the first foam inductive component 101A and the second foam inductive component 101B capacitance variation amount
Number.
After the meter Shui of pot is heated to boiling in electric cooking pot, steam bubble can be risen to residing for foam detection module 10
Position, if steam bubble only touches the first foam inductive component 101A, only the first foam inductive component 101A's
Capacitance changes, and now capacitance detecting chips 20 are according to the first foam inductive component 101A capacitance variation amount generation the
One foam detection signal；If steam bubble touches the second foam inductive component 101B, the first foam inductive component 101A
Changed with the second foam inductive component 101B capacitance, now capacitance detecting chips 20 are according to the first foam sense group
Part 101A and the second foam inductive component 101B capacitance variation amount and generation the second foam detection signal.So as to pass through
Successively two foam detection signals of generation are judged, can prevent erroneous judgement, improve foam accuracy of detection.
Specifically, as shown in Figures 3 and 4, when steam bubble touches the first foam inductive component 101A, the first foam sense
Component 101A induction part 12 is answered to sense that the first foam inductive component 101A capacitance changes, capacitance detecting chips 20
The capacitance variation amount for detecting foam detection module 10 is Δ C1, and Δ C1 is more than the first predetermined threshold value and less than the second default threshold
Value, capacitance detecting chips 20 can generate the first foam detection signal, wherein, the first foam detection signal is chip readable signal example
Such as data signal, main control chip 30 is communicated with capacitance detecting chips 20, and the first foam detection signal is sent to master control
Chip 30；Continue to heat, when steam bubble touches the second foam inductive component 101B, the first foam inductive component
101A induction part senses that the first foam inductive component 101A capacitance changes, and the second foam inductive component
101B induction part senses that the second foam inductive component 101B capacitance changes, and capacitance detecting chips 20 detect
One foam inductive component 101A and the second foam inductive component 101B capacitance change simultaneously, foam detection module 10
Capacitance variation amount is Δ C2, and Δ C2 is more than the second predetermined threshold value, and capacitance detecting chips 20 can generate the second foam detection signal,
Wherein, the second foam detection signal is chip readable signal such as data signal, capacitance detecting chips 20 by with main control chip
30 are communicated, and the second foam detection signal is sent to main control chip 30.
Further, if main control chip 30 receives the first foam detection signal, i.e. only the first foam inductive component
101A capacitance changes, then judges boiling deficiency, and spillover does not occur for electric cooking pot, and main control chip 30 controls electricity to cook
Device of preparing food keeps present output power constant；If main control chip 30 receives again after the first foam detection signal is received
Two foam detection signals, i.e. the first foam inductive component 101A and the second foam inductive component 101B capacitance become
Change, then judge boiling it is violent enough, electric cooking pot will overflow, and control electric cooking pot present output power reduction or
Electric cooking pot is controlled to stop heating, to prevent steam bubble from overflowing.
Thus, it can both ensure the sufficient boiling of electric cooking pot, spilling will not be produced again.
According to another embodiment of the invention, as shown in figure 5, each foam inductive component 101 respectively with capacitance detecting
Chip 20 is connected.
According to the specific embodiment of the present invention, as shown in figure 5, each foam inductive component 101 passes through second respectively
Resistance R2 is connected with capacitance detecting chips 20.Wherein, second resistance R2 is used for the capacitance variation amount to foam inductive component 101
Signal is filtered processing, so as to play jamproof effect.
According to the specific example of the present invention, second resistance R2 resistance value can be 10 Ω to 10k Ω.
Specifically, as shown in Figures 4 and 5, foam inductive component 101 can be two, i.e. the first foam inductive component 101A
With the second foam inductive component 101B, the first foam inductive component 101A induction part 12 passes through second resistance R2 and capacitance detecting
Chip 20 is connected, and the second foam inductive component 101B induction part 12 passes through second resistance R2 and the phase of capacitance detecting chips 20
Even, so, capacitance detecting chips 20 are respectively according to the first foam inductive component 101A and the second foam inductive component 101B electricity
Capacitance variable quantity generates detection signal.
After the meter Shui of pot is heated to boiling in electric cooking pot, steam bubble can be risen to residing for foam detection module 10
Position, if steam bubble only touches the first foam inductive component 101A, the first foam inductive component 101A electric capacity
Value changes, and capacitance detecting chips 20 generate the first foam according to the first foam inductive component 101A capacitance variation amount and examined
Survey signal；If steam bubble touches the second foam inductive component 101B, the second foam inductive component 101B capacitance
Change, capacitance detecting chips 20 generate the second foam according to the second foam inductive component 101B capacitance variation amount and detected
Signal.So as to be judged by two foam detection signals of priority generation, erroneous judgement can be prevented, improve foam detection essence
Degree.
As shown in Figures 4 and 5, steam bubble touches the first foam inductive component 101A, the first foam inductive component first
101A induction part 12 senses that the first foam inductive component 101A capacitance changes, and capacitance detecting chips 20 detect
The first foam inductive component 101A capacitance variation amount be Δ C1, capacitance detecting chips 20 can generate the first foam detection letter
Number, wherein, the first foam detection signal is chip readable signal such as data signal, main control chip 30 and capacitance detecting chips 20
Communicated, the first foam detection signal is sent to main control chip 30；Continue to heat, until steam bubble touches
Second foam inductive component 101B, the second foam inductive component 101B induction part senses the second foam inductive component 101B's
Capacitance changes, and the capacitance variation amount for the second foam inductive component 101B that capacitance detecting chips 20 detect is Δ
C2, capacitance detecting chips 20 can generate the second foam detection signal, wherein, the second foam detection signal is chip readable signal example
Such as data signal, capacitance detecting chips 20 by being communicated with main control chip 30, by the second foam detection signal send to
Main control chip 30.
Further, if main control chip 30 receives the first foam detection signal, i.e., highly relatively low bubble is only set
The capacitance of foam inductive component 101 changes, then judges boiling deficiency, and spillover, main control chip do not occur for electric cooking pot
The 30 electric cooking pots of control keep present output power constant；If main control chip 30 receives the second foam detection signal, that is, set
The capacitance for putting the higher foam inductive component 101 of height changes, then judges that boiling is violent enough, electric cooking pot will be sent out
It is raw to overflow, and control the present output power of electric cooking pot to reduce or control electric cooking pot to stop heating, to prevent steam bubble
Overflow.
Thus, it can both ensure the sufficient boiling of electric cooking pot, spilling will not be produced again.
The foam inductive component for electric cooking pot according to a specific embodiment of the invention is described with reference to Fig. 6
101。
As shown in fig. 6, the foam inductive component 101 for electric cooking pot according to embodiments of the present invention includes insulator
100 and electric conductor 200.
Specifically, electric conductor 200 is horizontally disposed, i.e. the thickness direction of electric conductor 200 orients along the vertical direction, thus leads
Down, the lower surface (i.e. detection faces 110) of insulator 100 is horizontal down, increases effective detection for the lower surface level of electric body 200
Area, so as to improve the sensitivity of anti-overflow detection.
Alternatively, the size of detection faces 110 can be depending on the size requirements in practical application to detection signal.
For example, the area of detection faces 110 is 50mm2-400mm2, on the one hand, still can be with when there is less foam contacting detection faces 110
Ensure that the change of electric capacity is sufficiently large in detection, another aspect, it is ensured that the outside interference to anti-overflow detection is smaller.
Advantageously, detection faces 110 are circle, i.e., electric conductor 200 is circular piece, so not only facilitate processing and manufacturing, and
The cross section of the cooking cavity of electric cooking pot is generally circular, and the circular applicability of detection faces 110 is higher.
Certainly, electric conductor 200 and detection faces 110 can also be other arbitrary shapes, and the present invention is not especially limited to this.
In some specific embodiments of the present invention, as shown in fig. 6, the side of the further coated with conductive body 200 of insulator 100
Face, i.e. insulator 100 while the lower surface and side of coated with conductive body 200.It is possible thereby to improve the anti-of foam inductive component 101
The reliability for detection function of overflowing.
Specifically, as shown in fig. 6, insulator 100 defines the unlimited accommodating chamber 120 in upper surface, electric conductor 200 is located at appearance
Receive in chamber 120, the lower surface and side of the coated with conductive body 200 simultaneously of insulator 100, and the upper surface of electric conductor 200 is from insulation
Body 100 exposes, in order to be connected with electric capacity chip.
Advantageously, as shown in fig. 6, the height of accommodating chamber 120 is more than the thickness of electric conductor 200, electric conductor 200 is located at receiving
The bottom of chamber 120, because the thickness of electric conductor 200 is smaller, electric conductor 200 can be so stably placed in insulator 100, prevented
Only electric conductor 200 deviates from the accommodating chamber 120 of insulator 100.
The foam sense group for electric cooking pot according to another specific embodiment of the invention is described with reference to Fig. 7
Part 101, the foam inductive component 101 for electric cooking pot are capacitance type detector.
It will be appreciated by those skilled in the art that capacitance type detector refers to, according to capacitance induction principle, work as quilt
When detection means is drawn in survey medium leaching, cause its capacitance variations, this change is converted into standard current signal, and then realizes anti-overflow
Relevant control.
Specifically, as shown in fig. 7, the foam inductive component 101 for electric cooking pot according to embodiments of the present invention wraps
Include mounting seat 300, detection lug 400, mounting bracket 500 and elastic component 600.
Mounting seat 300 is provided with the groove 310 that upper surface is opened wide.Detection lug 400 is located in groove 310.Mounting bracket 500
Removably it is installed on the upper surface of mounting seat 300.Elastic component 600 is located between mounting bracket 500 and detection lug 400, bullet
Property part 600 is mounted support 500 and is pressed in groove 310, and detection lug 400 is pressed on the bottom wall of groove 310 by elastic component 600
On.
Foam inductive component 101 for electric cooking pot according to embodiments of the present invention, using detection lug 400 and mounting seat
300 combination, capacitance type detector is formed, when under liquid (such as steam bubble) the contact mounting seat 300 in electric cooking pot
When surface is with 400 corresponding part of detection lug, you can realize the detection of spill over, cost is lower.Also, detection lug 400 is adopted
It is pressed on elastic component 600 and mounting bracket 500 in groove 310, and mounting bracket 500 is removably installed on mounting seat 300
On, the dismounting that detection lug 400 can be achieved in mounting bracket 500 thus need to be only dismounted, simple and convenient, good technique can be ensured
Assembling.Therefore, the foam inductive component 101 for electric cooking pot according to embodiments of the present invention is with cost is low, dismounting side
Just the advantages that.
As shown in fig. 7, the foam inductive component 101 for electric cooking pot according to embodiments of the present invention includes mounting seat
300th, detection lug 400, mounting bracket 500 and elastic component 600.
Advantageously, elastic component 600 is integrated part with mounting bracket 500, so can further reduce dismounting step, so as to
Further facilitate dismounting.
In some specific embodiments of the present invention, as shown in fig. 7, elastic component 600 can be spring, the upper end of spring and peace
Dress support 500 is connected and lower end is against on detection lug 400.
Further, mounting bracket 500 is formed by the upper end coiling of the spring, in other words, by the upper end of spring again
Predetermined shape is turned to form mounting bracket 500, it is possible thereby to elastic component 600 and mounting bracket 500 is integrated, and technique
Simply, cost is low.
To sum up, the anti-spilled detection means for electric cooking pot proposed according to embodiments of the present invention, sets multiple foams
Inductive component, when each foam inductive component senses steam bubble caused by electric cooking pot, the electric capacity of foam detection module
Value changes, and capacitance detecting chips generate foam detection signal by detecting the capacitance variation situation of foam detection module,
Main control chip judges whether electric cooking pot occurs spillover according to foam detection signal, and thus, the anti-spilled detection means can
Erroneous judgement is prevented, improves foam accuracy of detection, and then can both ensure that heating process was fully seethed with excitement, and can ensures electric cooking pot not
Produce spilling.Moreover, realizing the connectorless detection of foam, human body will not contact electric conductor, securely and reliably, without using every
Powered from power supply, reduce manufacturing cost, simplify assembly technology.
To reach above-mentioned purpose, a kind of electric cooking pot that another aspect of the present invention embodiment proposes, including above-described embodiment
The anti-spilled detection means for electric cooking pot.
According to the specific embodiment of the present invention, electric cooking pot can be electric cooker or electric pressure cooking saucepan.
To sum up, the electric cooking pot proposed according to embodiments of the present invention, can by the anti-spilled detection means of above-described embodiment
Erroneous judgement is prevented, improves foam accuracy of detection, and then can both ensure that heating process was fully seethed with excitement, and can ensures electric cooking pot not
Produce spilling.Moreover, realizing the connectorless detection of foam, human body will not contact electric conductor, securely and reliably, without using every
Powered from power supply, reduce manufacturing cost, simplify assembly technology.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (11)
- A kind of 1. anti-spilled detection means for electric cooking pot, it is characterised in that including：Foam detection module, the foam detection module include multiple foam inductive components, each foam inductive component Height between set location and horizontal plane gradually uprises successively, wherein, in each foam inductive component sensing The capacitance of the foam detection module changes when stating steam bubble caused by electric cooking pot；Capacitance detecting chips, the capacitance detecting chips are connected with the foam detection module, and the capacitance detecting chips pass through The capacitance variation situation of the foam detection module is detected to generate foam detection signal；Main control chip, the main control chip are communicated with the capacitance detecting chips to receive the foam detection signal, and Judge whether the electric cooking pot occurs spillover according to the foam detection signal.
- 2. the anti-spilled detection means according to claim 1 for electric cooking pot, it is characterised in that each foam Inductive component includes foam contacting portion and induction part, wherein, the foam contacting portion is insulator, and the induction part is conduction Body, the insulator are isolated the steam bubble with the electric conductor.
- 3. the anti-spilled detection means according to claim 2 for electric cooking pot, it is characterised in that the insulator with The electric conductor is close to set.
- 4. the anti-spilled detection means according to claim 2 for electric cooking pot, it is characterised in that the insulator Thickness is 1-10mm.
- 5. the anti-spilled detection means for electric cooking pot according to any one of claim 1-4, it is characterised in that institute State after multiple foam inductive components are connected together and be connected again with the capacitance detecting chips.
- 6. the anti-spilled detection means according to claim 5 for electric cooking pot, it is characterised in that the multiple foam Inductive component is connected by first resistor with the capacitance detecting chips again after being connected together.
- 7. the anti-spilled detection means for electric cooking pot according to any one of claim 1-4, it is characterised in that every The individual foam inductive component is connected with the capacitance detecting chips respectively.
- 8. the anti-spilled detection means according to claim 7 for electric cooking pot, it is characterised in that each foam Inductive component is connected by second resistance with the capacitance detecting chips respectively.
- 9. the anti-spilled detection means according to claim 1 for electric cooking pot, it is characterised in that each foam Inductive component is arranged in the steam channel of the electric cooking pot or the upper lid lower surface of the electric cooking pot.
- 10. a kind of electric cooking pot, it is characterised in that including being used for electric cooking pot according to any one of claim 1-9 Anti-spilled detection means.
- 11. electric cooking pot according to claim 10, it is characterised in that the electric cooking pot is electric cooker or Voltage force Pot.
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| CN201610878454.8A CN107884032B (en) | 2016-09-30 | 2016-09-30 | Electric cooker and anti-overflow detection device for same |
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|---|---|---|---|
| CN201610878454.8A CN107884032B (en) | 2016-09-30 | 2016-09-30 | Electric cooker and anti-overflow detection device for same |
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| CN107884032A true CN107884032A (en) | 2018-04-06 |
| CN107884032B CN107884032B (en) | 2024-04-16 |
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Cited By (3)
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| CN117782260A (en) * | 2023-11-01 | 2024-03-29 | 杭州九阳小家电有限公司 | Liquid heater for detecting overflow prevention in space |
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| CN107884032B (en) | 2024-04-16 |
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