CN106979821B - The overheating detection method and apparatus of cooking apparatus - Google Patents
The overheating detection method and apparatus of cooking apparatus Download PDFInfo
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- CN106979821B CN106979821B CN201710179839.XA CN201710179839A CN106979821B CN 106979821 B CN106979821 B CN 106979821B CN 201710179839 A CN201710179839 A CN 201710179839A CN 106979821 B CN106979821 B CN 106979821B
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- 238000010411 cooking Methods 0.000 title claims abstract description 158
- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 238000013021 overheating Methods 0.000 title claims abstract description 51
- 230000008859 change Effects 0.000 claims abstract description 231
- 238000000034 method Methods 0.000 abstract description 9
- 230000005856 abnormality Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0092—Temperature by averaging, e.g. by scan
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Abstract
The invention discloses a kind of overheating detection method and apparatus of cooking apparatus, the described method comprises the following steps: obtaining the mean temperature above cooking apparatus within the scope of preset area；The temperature change value and rate of temperature change of cooking apparatus are obtained according to mean temperature, wherein temperature gap of the temperature change value between mean temperature and fiducial temperature；Judge whether cooking apparatus overheats according to temperature change value and rate of temperature change.This method can effectively judge whether cooking apparatus occurs the abnormalities such as overheat, avoid the occurrence of safety accident according to the temperature change value and rate of temperature change within the scope of preset area above cooking apparatus.
Description
Technical field
The present invention relates to field of home appliance technology, in particular to the overheating detection method and one kind of a kind of cooking apparatus are cooked
It prepares food the overheating detection device of utensil.
Background technique
In the use process of cooking appliance (such as gas-cooker, multi-head stove etc.), since user often forgets about pass fire/power-off,
Cooking apparatus is easily caused the abnormal conditions such as to occur overheating.When cooking apparatus overheats, can cause food it is burnt, culinary art
Utensil coated substance generate chemical reaction etc., not only pollute kitchen environment, cause damages to user's body health, and it is serious when
Fire can occur, there is very big security risk.
In the related technology, judge whether cooking apparatus overheats by temperature change value, that is, in the temperature of cooking apparatus
When degree changing value reaches predetermined temperature change threshold, judge that cooking apparatus overheats.But in actual use,
The heat that different size of cooking apparatus is born is different, it is easy to cause small cooking apparatus due to the heat of receiving is excessive
Damage.
Moreover, being multiple by the two or more sensors of setting, or use when obtaining temperature change value
Different wave length section sensor detects the temperature of cooking apparatus, according to the temperature computation temperature change value, so not only hardware at
This height, and detect inaccuracy.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of overheating detection method of cooking apparatus, it can be according to culinary art
Temperature change value and rate of temperature change above utensil within the scope of preset area, effectively judge whether cooking apparatus overheats
Etc. abnormalities, avoid the occurrence of safety accident.
It is another object of the present invention to the overheating detection devices for proposing a kind of cooking apparatus.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of overheating detection method of cooking apparatus, packet
It includes following steps: obtaining the mean temperature above cooking apparatus within the scope of preset area；According to mean temperature acquisition
The temperature change value and rate of temperature change of cooking apparatus, wherein the temperature change value is the mean temperature and fiducial temperature
Between temperature gap；Judge whether the cooking apparatus overheats according to the temperature change value and the rate of temperature change.
The overheating detection method of cooking apparatus according to an embodiment of the present invention presets face firstly, obtaining above cooking apparatus
Then mean temperature in product range obtains the temperature change value and rate of temperature change of cooking apparatus according to mean temperature, most
Afterwards, judge whether cooking apparatus overheats according to temperature change value and rate of temperature change.This method can be according to above cooking apparatus
Temperature change value and rate of temperature change within the scope of preset area, effectively judge whether cooking apparatus occurs the abnormal shape such as overheat
State avoids the occurrence of safety accident.
According to one embodiment of present invention, described according to the temperature change value and rate of temperature change judgement
Whether cooking apparatus overheats, comprising: judges whether the rate of temperature change is more than or equal to the first default change rate；If the temperature
It spends change rate and is more than or equal to the described first default change rate, then calculate the overheat of the cooking apparatus according to the rate of temperature change
Predicted value；Judge whether the overheat predicted value is more than or equal to default overheat threshold value and the temperature change value is more than or equal to the
One preset value；If the overheat predicted value is more than or equal to the default overheat threshold value and the temperature change value is more than or equal to
First preset value then judges the cooking apparatus overheat.
According to one embodiment of present invention, the overheat predicted value for judging the rate of temperature change be more than or equal to institute
The sum of rate of temperature change after stating the first default change rate.
According to one embodiment of present invention, the overheating detection method of above-mentioned cooking apparatus, further includes: judge the temperature
Whether change rate is spent less than the second default change rate, wherein the second default change rate is less than the described first default change rate；
If the rate of temperature change is less than the described second default change rate, the fiducial temperature is carried out according to the mean temperature
Compensation.
According to one embodiment of present invention, if the rate of temperature change be more than or equal to the described second default change rate and
Less than the described first default change rate, then further include: judge the temperature change value whether less than the second preset value, wherein institute
The second preset value is stated less than first preset value；If the temperature change value is less than second preset value, to described
Overheat predicted value initialization.
According to one embodiment of present invention, by the way that one or more infrared ray temperature above the cooking apparatus are arranged in
Degree sensor obtains the mean temperature within the scope of the preset area.
To achieve the above object, a kind of overheating detection device for cooking apparatus that another aspect of the present invention embodiment proposes,
It include: the first acquisition module, for obtaining the mean temperature above cooking apparatus within the scope of preset area；Second obtains module,
For obtaining the temperature change value and rate of temperature change of the cooking apparatus according to the mean temperature, wherein the temperature becomes
Temperature gap of the change value between the mean temperature and fiducial temperature；Judgment module, for according to the temperature change value and
The rate of temperature change judges whether the cooking apparatus overheats.
The overheating detection device of cooking apparatus according to an embodiment of the present invention obtains module by first and obtains cooking apparatus
Mean temperature within the scope of the preset area of top, second obtains the temperature change value that module obtains cooking apparatus according to mean temperature
And rate of temperature change, judgment module judge whether cooking apparatus overheats according to temperature change value and rate of temperature change.The device energy
Enough temperature change values and rate of temperature change according within the scope of preset area above cooking apparatus, effectively judge that cooking apparatus is
The abnormalities such as no generation overheat, avoid the occurrence of safety accident.
According to one embodiment of present invention, the judgment module includes: the first judging submodule, for judging the temperature
Whether degree change rate is more than or equal to the first default change rate；Computing module, described in judging in first judging submodule
When rate of temperature change is more than or equal to the first default change rate, the mistake of the cooking apparatus is calculated according to the rate of temperature change
Hot predicted value；Second judgment submodule, for judging whether the overheat predicted value is more than or equal to default overheat threshold value and described
Temperature change value be more than or equal to the first preset value, wherein if the overheat predicted value more than or equal to the default overheat threshold value,
And the temperature change value is more than or equal to first preset value, then judges the cooking apparatus overheat.
According to one embodiment of present invention, the overheat predicted value for judging the rate of temperature change be more than or equal to institute
The sum of rate of temperature change after stating the first default change rate.
According to one embodiment of present invention, the overheating detection device of above-mentioned cooking apparatus, further includes compensating module, institute
Compensating module is stated to be used for when first judging submodule judges the rate of temperature change less than the second default change rate, according to
The mean temperature compensates the fiducial temperature, wherein the second default change rate is less than the described first default change
Rate.
According to one embodiment of present invention, the overheating detection device of above-mentioned cooking apparatus, further includes initialization module,
The initialization module is used to judge that the rate of temperature change is more than or equal to described second in first judging submodule default
Change rate and it is less than the described first default change rate and the second judgment submodule and judges the temperature change value less than second
When preset value, the overheat predicted value is initialized, wherein second preset value is less than first preset value.
According to one embodiment of present invention, the first acquisition module passes through one be arranged in above the cooking apparatus
A or multiple infrared temperature sensors obtain the mean temperature within the scope of the preset area.
Detailed description of the invention
Fig. 1 is the flow chart of the overheating detection method of cooking apparatus according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram detected in the related technology using " point " mode to the temperature above cooking apparatus；
Fig. 3 is that use " face " mode according to an embodiment of the invention detects the temperature above cooking apparatus
Structural schematic diagram；
Fig. 4 is the temperature changing curve diagram for having food in cooking apparatus according to an embodiment of the invention；
Fig. 5 is the flow chart of the overheating detection method of cooking apparatus according to an embodiment of the invention；
Fig. 6 is the block diagram of the overheating detection device of cooking apparatus according to an embodiment of the present invention；
Fig. 7 is the block diagram of the overheating detection device of cooking apparatus according to an embodiment of the invention；
Fig. 8 is the block diagram of the overheating detection device of cooking apparatus in accordance with another embodiment of the present invention；And
Fig. 9 is the block diagram of the overheating detection device of the cooking apparatus of another embodiment according to the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The overheating detection method and culinary art of the cooking apparatus proposed according to embodiments of the present invention described with reference to the accompanying drawings
The overheating detection device of utensil.
Fig. 1 is the flow chart of the overheating detection method of cooking apparatus according to an embodiment of the present invention.As shown in Figure 1, this is cooked
The overheating detection method of utensil of preparing food can comprise the following steps that
S1 obtains the mean temperature above cooking apparatus within the scope of preset area.
According to one embodiment of present invention, it is passed by the way that one or more infrared temperatures above cooking apparatus are arranged in
Sensor obtains the mean temperature within the scope of preset area.
Specifically, by taking gas-cooker as an example.When use " point " mode shown in Fig. 2 carries out the temperature above cooking apparatus
When detection, need that the sensor with measurand equivalent amount is installed, and need to adjust distance between sensor and measurand.
Moreover, when being detected to temperature, if there are shelters between measurand and sensor, for example, being produced in cooking process
The foreign matters such as raw oil smoke, steam can block most of detection zone, so that testing result is inaccurate, anti-interference is poor.It is overall next
It says, " point " mode temperature checking method is affected by the external environment greatly.
When detecting using " face " mode shown in Fig. 3 to the temperature above cooking apparatus, single sensing can be used
Device detects the temperature of (such as range hood bottom) certain area above cooking apparatus, and not only overlay area is big, at low cost, without
With other parameters (the burner position of the cooking appliance of such as different model, relative position etc.) between sensor and measurand,
And the foreign matters such as oil smoke, steam generated in cooking process only block fraction area, will not influence testing result, anti-interference
It is relatively strong.
Therefore, in an embodiment of the present invention, detected using " face " mode.As shown in figure 3, can cooked by setting
The infrared temperature sensor (e.g., Non-contact Infrared Temperature Measurement sensor) to prepare food above utensil, real-time detection cooking apparatus
Temperature in the preset area of top, the temperature include the temperature of cooking appliance, the temperature of cooking apparatus and food temperature etc., and
To the temperature averaged of acquisition, to obtain the average temperature tm within the scope of preset area.
It is understood that in an embodiment of the present invention, multiple infrared temperature sensors can also be arranged with real-time
The temperature above cooking apparatus in preset area is detected, to further increase the accuracy of temperature detection.
S2 obtains the temperature change value and rate of temperature change of cooking apparatus according to mean temperature.
Specifically, temperature gap of the temperature change value between average temperature tm and fiducial temperature Tr, rate of temperature change
DTm/dt is the mean temperature variable quantity in the short time.Wherein, fiducial temperature Tr can be the default value of default setting, for example,
Default value can be 20 DEG C.
S3 judges whether cooking apparatus overheats according to temperature change value and rate of temperature change.
According to one embodiment of present invention, according to temperature change value and rate of temperature change judge cooking apparatus whether mistake
Heat, comprising: judge whether rate of temperature change is more than or equal to the first default change rate；If it is pre- that rate of temperature change is more than or equal to first
If change rate, then the overheat predicted value of cooking apparatus is calculated according to rate of temperature change；Judge to overheat whether predicted value is more than or equal to
It presets overheat threshold value and temperature change value is more than or equal to the first preset value；If overheating predicted value is more than or equal to default overheat threshold
It is worth and temperature change value is more than or equal to the first preset value, then judges that cooking apparatus overheats.
Wherein, the first default change rate and default overheat threshold value can be demarcated according to the actual situation, and overheat predicted value can
Diversified forms are defined, for example, overheat predicted value can be for after judging that rate of temperature change is more than or equal to the first default change rate
The sum of rate of temperature change.
Specifically, the mean temperature above cooking apparatus can change after cooking appliance start-up operation, temperature becomes
Change value and rate of temperature change can also change accordingly.Due to detecting preset area model above cooking apparatus using " face " mode
Enclose interior mean temperature, the temperature of temperature, cooking apparatus including cooking appliance and food temperature etc., therefore, regardless of culinary art
Whether the size of cooking apparatus when whether having food in utensil, while using is identical, can fast and accurately judge to cook
Whether utensil overheats.
By taking the cooking apparatus with food as an example.As shown in figure 4, a-quadrant indicates to have the cooking apparatus temperature liter of food
High curve, in this region, heat, which is concentrated, heats food and cooking apparatus；B area indicates after a certain period of time, in cooking apparatus
Food it is cooked after temperature lift curves, in this region, heat concentrates on moisture evaporation；The region C indicates water in cooking apparatus
Divide temperature curve after evaporating, in this region, rate of temperature change is maximum.It therefore, can be according to the temperature change value and temperature in the region C
Change rate judges whether cooking apparatus overheats.
When rate of temperature change is more than or equal to certain value (the such as first default change rate), the region C in corresponding diagram 4, at this point,
OEV (Overheat Estimation Value, overheat prediction can be calculated according to the rate of temperature change that dotted line is irised out in the region C
Value), for example, overheat predicted value OEV can be more than or equal to the temperature after the first default change rate γ for rate of temperature change for the first time
The sum of change rate, that is, OEV=Σ dTm/dt.Meanwhile calculating the difference between mean temperature and fiducial temperature, i.e. temperature change
Value.Then, overheat predicted value OEV and temperature change value are judged, if overheat predicted value OEV is more than or equal to default overheat
Threshold value and temperature change value are more than or equal to the first preset value, then illustrate that cooking apparatus overheats.To utilize related heat transfer characteristic
Rate of temperature change data are effectively solved without presetting practical overtemperature value (e.g., can be judged as overheat more than 50 DEG C)
Using different heat transmitting cooking apparatus (e.g., cooking apparatus of different sizes) when the problems of excessive heat that occurs.And judging
When overheating, capable of emitting warning note is to remind user.
Therefore, the overheating detection method of cooking apparatus according to an embodiment of the present invention, by according to pre- above cooking apparatus
If temperature change value and rate of temperature change in areal extent judge whether cooking apparatus occurred cause thermal damage, not only judgement essence
Degree is high, and cost is relatively low, versatile.
According to one embodiment of present invention, the overheating detection method of above-mentioned cooking apparatus further include: judge that temperature becomes
Whether rate is less than the second default change rate；If rate of temperature change is less than the second default change rate, according to mean temperature pair
Fiducial temperature compensates.Wherein, for the second default change rate less than the first default change rate, the second default change rate can be according to reality
Border situation is demarcated.
Specifically, Various Seasonal, the environment temperature of different regions are different, if the fiducial temperature for being all made of default carries out
It calculates and judges, then when judging whether cooking apparatus overheat occurs, biggish error can be generated, it therefore, can be to benchmark temperature
Degree compensates, so that fiducial temperature is more in line with actual conditions.
Specifically, when judging rate of temperature change, if rate of temperature change is said less than the second default change rate
Bright cooking appliance is not opened, at this point, can according to the mean temperature within the scope of preset area above cooking apparatus to fiducial temperature into
Row compensation, for example, fiducial temperature is equal to mean temperature；If rate of temperature change is more than or equal to the second default change rate, illustrate
Cooking appliance is opened, and is not compensated to fiducial temperature, i.e. holding current base is temperature-resistant, and according to mean temperature and preservation
Fiducial temperature calculate temperature change value and rate of temperature change, to judge cooking apparatus according to temperature change value and rate of temperature change
Whether overheat.So as to compensate by the mean temperature above cooking apparatus to fiducial temperature, not only make control more
Add precisely, and without additionally detecting current environmental temperature using temperature sensor, has saved cost.
Further, according to one embodiment of present invention, if rate of temperature change is more than or equal to the second default change rate
And less than the first default change rate, then further include: judge temperature change value whether less than the second preset value；If temperature change value
Less than the second preset value, then to overheat predicted value initialization.Wherein, the second preset value is less than the first preset value, the second preset value
It can be demarcated according to the actual situation.
Specifically, illustrating if rate of temperature change is greater than the second default change rate and less than the first default change rate
Most of heat, which is concentrated on, at this time carries out heating to cooking apparatus and food or to moisture evaporating state, i.e. a-quadrant or B in Fig. 4
Region.And if temperature change value is less than the second preset value at this time, illustrate that cooking apparatus is not in overheat, at this time to overheat
Predicted value is initialized；If temperature change value is more than or equal to the second preset value, continue according to default above cooking apparatus
Mean temperature in areal extent obtains temperature change value and rate of temperature change, and carries out to temperature change value and rate of temperature change
Judgement.
To make those skilled in the art better understand the present invention.Fig. 5 is culinary art according to an embodiment of the invention
The flow chart of the overheating detection method of utensil.As shown in figure 5, the overheating detection method of the cooking apparatus can comprise the following steps that
S101 obtains the average temperature tm of certain area above cooking apparatus.
S102 obtains rate of temperature change dTm/dt according to Tm.
S103, judges whether dTm/dt is more than or equal to the second default change rate α.If so, executing step S105；If
It is no, execute step S104.
S104 compensates fiducial temperature Tr according to Tm, for example, Tr=Tm.
S105, judges whether dTm/dt is more than or equal to the first default change rate γ.If so, executing step S106；If
It is no, execute step S110.
S106 calculates overheat predicted value OEV, for example, OEV=Σ dTm/dt.
S107 obtains temperature change value Tm-Tr.
S108, judge OEV whether be more than or equal to set overheat threshold value δ and Tm-Tr be more than or equal to the first preset value B.If
It is to execute step S109；If not, executing step S110.
S109, cooking apparatus overheat.
Whether S110 judges Tm-Tr less than the second preset value A.If so, executing step S111；If not, return step
S101。
S111, OEV initialization.
In conclusion the overheating detection method of cooking apparatus according to an embodiment of the present invention, firstly, obtaining on cooking apparatus
Then mean temperature within the scope of square preset area obtains the temperature change value of cooking apparatus according to mean temperature and temperature becomes
Rate, finally, judging whether cooking apparatus overheats according to temperature change value and rate of temperature change.This method can be according to cooking pot
Temperature change value and rate of temperature change within the scope of the preset area of tool top, effectively judge whether cooking apparatus occurs overheat etc.
Abnormality avoids the occurrence of safety accident.
Fig. 6 is the block diagram of the overheating detection device of cooking apparatus according to an embodiment of the present invention.As shown in fig. 6,
The overheating detection device of the cooking apparatus can include: first, which obtains module 10, second, obtains module 20 and judgment module 30.
Wherein, the first acquisition module 10 is used to obtain the mean temperature above cooking apparatus within the scope of preset area.Second
Temperature change value and rate of temperature change that module 20 is used to obtain cooking apparatus according to mean temperature are obtained, temperature change value is flat
Temperature gap between equal temperature and fiducial temperature.Judgment module 30 is used to be cooked according to temperature change value and rate of temperature change judgement
Whether utensil of preparing food overheats.
According to one embodiment of present invention, as shown in fig. 7, judgment module 30 includes: the first judging submodule 31, calculates
Module 32 and second judgment submodule 33.Wherein, the first judging submodule 31 is for judging whether rate of temperature change is more than or equal to
First default change rate；Computing module 32 is used to judge that rate of temperature change is more than or equal to first in the first judging submodule 31 default
When change rate, the overheat predicted value of cooking apparatus is calculated according to rate of temperature change；Second judgment submodule 33 is for judging overheat
Whether predicted value is more than or equal to default overheat threshold value and temperature change value is more than or equal to the first preset value, if overheat predicted value
More than or equal to default overheat threshold value and temperature change value is more than or equal to the first preset value, then judges that cooking apparatus overheats.
According to one embodiment of present invention, overheat predicted value is to judge rate of temperature change more than or equal to the first default change
The sum of rate of temperature change after rate.
According to one embodiment of present invention, as shown in figure 8, the overheating detection device of above-mentioned cooking apparatus further include:
Compensating module 40.Compensating module 40 is used to judge rate of temperature change less than the second default change rate in the first judging submodule 31
When, fiducial temperature is compensated according to mean temperature, wherein the second default change rate is less than the first default change rate.
According to one embodiment of present invention, as shown in figure 9, the overheating detection device of above-mentioned cooking apparatus further include:
Initialization module 50.Initialization module 50 is used to judge that rate of temperature change is more than or equal to second in the first judging submodule 31 default
Change rate and less than the first default change rate and when second judgment submodule 33 judges temperature change value less than the second preset value,
To overheat predicted value initialization, wherein the second preset value is less than the first preset value.
According to one embodiment of present invention, the first acquisition module 10 passes through one or more be arranged in above cooking apparatus
A infrared temperature sensor obtains the mean temperature within the scope of preset area.
It should be noted that undisclosed details in the overheating detection device of the cooking apparatus of the embodiment of the present invention, please join
Details disclosed in overheating detection method according to the cooking apparatus of the embodiment of the present invention, specific which is not described herein again.
The overheating detection device of cooking apparatus according to an embodiment of the present invention obtains module by first and obtains cooking apparatus
Mean temperature within the scope of the preset area of top, second obtains the temperature change value that module obtains cooking apparatus according to mean temperature
And rate of temperature change, judgment module judge whether cooking apparatus overheats according to temperature change value and rate of temperature change.The device energy
Enough temperature change values and rate of temperature change according within the scope of preset area above cooking apparatus, effectively judge that cooking apparatus is
The abnormalities such as no generation overheat, avoid the occurrence of safety accident.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
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 be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height 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 spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (12)
1. a kind of overheating detection method of cooking apparatus, which comprises the following steps:
Obtain the mean temperature above cooking apparatus within the scope of preset area；
The temperature change value and rate of temperature change of the cooking apparatus are obtained according to the mean temperature, wherein the temperature becomes
Temperature gap of the change value between the mean temperature and fiducial temperature；
Judge whether the cooking apparatus overheats according to the temperature change value and the rate of temperature change.
2. the overheating detection method of cooking apparatus as described in claim 1, which is characterized in that described according to the temperature change
Value and the rate of temperature change judge whether the cooking apparatus overheats, comprising:
Judge whether the rate of temperature change is more than or equal to the first default change rate；
If the rate of temperature change is more than or equal to the described first default change rate, according to rate of temperature change calculating
The overheat predicted value of cooking apparatus；
Judge whether the overheat predicted value is more than or equal to default overheat threshold value and the temperature change value is more than or equal to first in advance
If value；
If the overheat predicted value is more than or equal to the default overheat threshold value and the temperature change value more than or equal to described the
One preset value then judges the cooking apparatus overheat.
3. the overheating detection method of cooking apparatus as claimed in claim 2, which is characterized in that the overheat predicted value is to sentence
The rate of temperature change that breaks is more than or equal to the sum of the rate of temperature change after the described first default change rate.
4. the overheating detection method of cooking apparatus as claimed in claim 2 or claim 3, which is characterized in that further include:
Judge the rate of temperature change whether less than the second default change rate, wherein the second default change rate is less than described
First default change rate；
If the rate of temperature change is less than the described second default change rate, according to the mean temperature to the fiducial temperature
It compensates.
5. the overheating detection method of cooking apparatus as claimed in claim 4, which is characterized in that if the rate of temperature change is big
In being equal to the described second default change rate and being less than the described first default change rate, then further include:
Judge the temperature change value whether less than the second preset value, wherein it is default that second preset value is less than described first
Value；
If the temperature change value is less than second preset value, the overheat predicted value is initialized.
6. the overheating detection method of cooking apparatus as described in claim 1, which is characterized in that by being arranged in the cooking pot
One or more infrared temperature sensors of tool top obtain the mean temperature within the scope of the preset area.
7. a kind of overheating detection device of cooking apparatus characterized by comprising
First obtains module, for obtaining the mean temperature above cooking apparatus within the scope of preset area；
Second obtains module, for obtaining the temperature change value and temperature change of the cooking apparatus according to the mean temperature
Rate, wherein temperature gap of the temperature change value between the mean temperature and fiducial temperature；
Judgment module, for judging whether the cooking apparatus overheats according to the temperature change value and the rate of temperature change.
8. the overheating detection device of cooking apparatus as claimed in claim 7, which is characterized in that the judgment module includes:
First judging submodule, for judging whether the rate of temperature change is more than or equal to the first default change rate；
Computing module, for judging that the rate of temperature change is more than or equal to the described first default change in first judging submodule
When rate, the overheat predicted value of the cooking apparatus is calculated according to the rate of temperature change；
Second judgment submodule, for judging whether the overheat predicted value is more than or equal to default overheat threshold value and the temperature
Changing value is more than or equal to the first preset value, wherein if the overheat predicted value is more than or equal to the default overheat threshold value and institute
Temperature change value is stated more than or equal to first preset value, then judges the cooking apparatus overheat.
9. the overheating detection device of cooking apparatus as claimed in claim 8, which is characterized in that the overheat predicted value is to sentence
The rate of temperature change that breaks is more than or equal to the sum of the rate of temperature change after the described first default change rate.
10. the overheating detection device of cooking apparatus as claimed in claim 8 or 9, which is characterized in that it further include compensating module,
The compensating module is used for the root when first judging submodule judges the rate of temperature change less than the second default change rate
The fiducial temperature is compensated according to the mean temperature, wherein it is default that the second default change rate is less than described first
Change rate.
11. the overheating detection device of cooking apparatus as claimed in claim 10, which is characterized in that it further include initialization module,
The initialization module is used to judge that the rate of temperature change is more than or equal to described second in first judging submodule default
Change rate and it is less than the described first default change rate and the second judgment submodule and judges the temperature change value less than second
When preset value, the overheat predicted value is initialized, wherein second preset value is less than first preset value.
12. the overheating detection device of cooking apparatus as claimed in claim 7, which is characterized in that described first, which obtains module, leads to
The one or more infrared temperature sensors being arranged in above the cooking apparatus are crossed to obtain within the scope of the preset area
Mean temperature.
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| CN109699097B (en) * | 2017-10-24 | 2021-07-20 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and IGBT overheating abnormity processing method and device thereof |
| CN108302562B (en) * | 2018-01-10 | 2020-04-03 | 广东美的厨房电器制造有限公司 | Gas stove and control method thereof |
| CN108302563B (en) * | 2018-01-10 | 2020-08-04 | 广东美的厨房电器制造有限公司 | Gas stove and control method thereof |
| CN108278639B (en) * | 2018-01-10 | 2020-02-11 | 广东美的厨房电器制造有限公司 | Gas stove and control method thereof |
| CN108828970A (en) * | 2018-06-26 | 2018-11-16 | 深圳佳比泰智能照明股份有限公司 | A kind of smart home coal gas control method |
| CN110858435A (en) * | 2018-08-22 | 2020-03-03 | 上海宜链物联网有限公司 | Kitchen temperature monitoring and alarming device and method |
| CN110579294A (en) * | 2019-08-28 | 2019-12-17 | 广东美的厨房电器制造有限公司 | Temperature correction method, cooking utensil and medium |
| CN110657460B (en) * | 2019-09-20 | 2021-07-13 | 浙江帅丰电器股份有限公司 | Kitchen safety assistance, screen-off control and health reminding system and working method |
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